Management of wireless devices in limited radio coverage.

(54) Title: MANAGEMENT OF WIRELESS DEVICES IN LIMITED RADIO COVERAGE.

(54) Title: MANAGEMENT OF WIRELESS DEVICES IN LIMITED RADIO COVERAGE.

(57) Summary

A mechanism for improving radio coverage for a wireless device based on an exchange of uplink and downlink radio condition information is described, called uplink and downlink Radio Coverage Category (RCC) values, between the wireless device and a network (for example, a Radio Access Network (RAN) node, Core Network (CN) node) for use in data transmission (for example, signaling related to the control plane or transmission of payload related to the user plane).

(57) Abstract

A mechanism is described herein for enhancing the radio coverage for a wireless device based on an exchange of uplink and downlink radio condition information, referred to as uplink and downlink Radio Coverage Category (RCC) valúes, between the wireless device and a network (eg, a Radio Access Network (RAN) node, Core Network (CN) node) for use in data transmission (eg, control plañe related signaling or user plañe related payload transmission).

PATENT TITLE No. 360506

<td>Headlines):</td><td>TELEFONAKTIEBOLAGET LM ERICSSON (PUBL)</td>

<td>Home:</td><td>SE-164 83, Stockholm, SWEDEN</td>

<td>Denomination:</td><td>MANAGEMENT OF WIRELESS DEVICES IN LIMITED RADIO COVERAGE.</td>

Classification!

CIP:

<img file="MX360506B_D0001.tif" />

H04L1 / 0Q: H04L

PAUL SCMJWK-BERTLING; NICKLfl ^ tJÓHANSSON Γ

CPC:

®; HC ^ W48 / 12; H04W68 / 02

8 / ^ (H04W88 / O2; H04W72 / 0406 SUNDBffe: | QHN WALTER DIACHINA;

i

Inventor (s):

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Ii extendable, counted to you ¿otarte áMñt

Number: J

MX / a / 2016/016678

Number:

Validity: VM ^ Faños

Date of VgMi ^ ient ^ 24 «S ^ juniQ Date of ExpM ^ tion:

The patent of referenMW Q In accordance with the artig as of the date of presen!

Who subscribes to this title is (Official Gazette of the Federation 25/01/2006, 06/05/2009, 06/01/2010, and 12th fractions I and III of the Regime 07/28/2004 and 09/07/2007 ); Articles 1, 3, Industrial Property (DOF 12/27/1999, re faculties in the Deputy Directors General 'Departmental Coordinators and other subordinates of 07/29/2004, 08/04/2004 and 09/13/2007).

2012,11/(

Industrial.

a * tSy of Industrial Property 5/1999, 01/26/2004, 06/16/2005, os 1 °, 3 ° fraction V subsection a), 4 '' made on 07/01/2002, 15/07 / 2004, the only Mexican Institute of the 3rd and 5th subsection a) of the Agreement that delegates Regional Offices, Divisional Deputy Directors, al. (DOF 12/15/1999, amended on 02/04/2000,, 12/26 /

This letter is signed with an advanced electronic signature (FIEL), based on articles 7 BIS 2 of the Industrial Property Law; 3 of its Regulations, and 1 section III, 2 section V, 26 BIS and 26 TER of the Agreement establishing the guidelines for the use of the Electronic Payment and Services Portal (PASE) of the Mexican Institute of Industrial Property, in the procedures indicated.

THE DIVISIONAL DIRECTOR OF PATENTS

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NAHANNY CANAL REYES

Original string:

NAHANNY MARISOL CANAL REYES | 00001000000403252793 | Administration Service

Tax | 1695 || MX / 2019/6681 | MX / a / 2016/016678 | PCT patent title | 1220 | RRGO | Page (s) | OgQz7GjV4CIOSOI / BH3NOtWvkqc =

Digital stamp:

PfNSHsMXVEPkdACbE26abMIQGXfPCv5sesj8k8rwjXSsvXgiHDYPY70X1 / DJyA9WAwy4gdgtwAoC15Q7EMMUT13saX XdW0zd5ANTeQEqZcNhuvK2FIEF2sqlFdERoPKA31cw3ybp6rqEbEYKgn5gqYq67gGyiTaZFTZ2jHpC8RpE1yKctwJT pyudJhpcUoSyCQRDZuP8dzaTlfz9K / K2OVslA3MRJLONDVT2KvwvFFR53DKH / NNF / BDejm5viEFs2N6eQ4KY7F6 + XW ivWLeFbA¡Jm8Ui + huZhjxlQXxVfF / xNAIxzF6QWkZZmUy / xq6ukV3J2Hy3YVIECVLalV5Vcw ==

Arenal No. 550 Piso 1, Pueblo Santa María Tepepan, Xochimilco, 16020, Mexico City.

(55) 53340700 www.gob.mx/impi

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ZC0506

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MANAGEMENT OF WIRELESS DEVICES IN LIMITED RADIO COVERAGE

CLAIM OF PRIORITY

This application claims the priority benefit before US Provisional Application No. 62 / 016,558, filed on June 24, 2014 and before US Provisional Application No. 62 / 107,847, filed on January 26, 2015.

TECHNICAL FIELD

The present invention relates to radio transmission and reception of a network and wireless device and, more particularly, to techniques for improving radio coverage based on an exchange of radio condition information between a network and a device. wireless to repeat data transmissions on a radio interface between the network and the wireless device.

ANTECEDENT

The following abbreviations and terms are defined herein, at least some of which are mentioned within the following description of the present disclosure.

3GPP Third Generation Partnership Project

IMPI

<img file="MX360506B_D0007.tif" />

<td>AGCH</td><td>Channel to grant access</td>

<td>SO C</td><td>Specific Application Integrated Circuit</td>

<td>BCCH</td><td>Broadcasting Control Channel</td>

<td>BSC</td><td>Base Station Controller</td>

<td>BSS</td><td>Base Station Subsystem</td>

<td>DC</td><td>Coverage class</td>

<td>CN</td><td>Core Network node</td>

<td>DSP</td><td>Digital Signal Processor</td>

<td>eDRX</td><td>Extended Discontinued Reception</td>

<td>EC-GSM</td><td>Extended Coverage-Global System for Mobile Communications</td>

<td>EDGE</td><td>Improved Data Rates for Evolution GSM</td>

<td>EGPRS</td><td>Enhanced General Packet Radio Service</td>

<td>ENB</td><td>Node B Evolved</td>

<td>E-UTRA</td><td>Universal Terrestrial Radio Access Evo1uc i onado</td>

<td>FCCH</td><td>Frequency Correction Channel</td>

<td>GSM</td><td>Global System for Mobile Communications</td>

<td>GERAN</td><td>GSM / EDGE Radio Access Network</td>

<td>IMSI</td><td>International Identity of the Subscriber to a Mobile</td>

<td>IoT</td><td>Internet of things</td>

<td>LLC</td><td>Logical Link Control</td>

<td>MME</td><td>Mobile Management Entity</td>

<td>MTC</td><td>Machine Type Communications</td>

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<td>ÑAS</td><td>Non-Access Stratum</td>

<td>LTE</td><td>Long Term Evolution</td>

<td>PACCH</td><td>Associated Control Channel per Package</td>

<td>PDN</td><td>Package Data Network</td>

<td>PDTCH</td><td>Packet Data Traffic Channels</td>

<td>PDU</td><td>Protocol Data Unit</td>

<td>RACH</td><td>Random Access Channel</td>

<td>RAN</td><td>Radio Access Node</td>

<td>RAT</td><td>Radio Access Technology</td>

<td>RAU</td><td>Routing Area Update</td>

<td>RCC</td><td>Radio Coverage Category</td>

<td>RLC</td><td>Radio Link Control</td>

<td>RNC</td><td>Radio Network Controller</td>

<td>RRC</td><td>Radio Resource Control</td>

<td>SCH</td><td>Synchronization Channel</td>

<td>SGSN</td><td>GPRS Service Support Node</td>

<td>YES</td><td>System information</td>

<td>TLLI</td><td>Temporary Logical Link Identifier</td>

<td>EU</td><td>User Equipment</td>

<td>UL</td><td>Uplink</td>

<td>UMTS</td><td>Universal Mobile Telecommunications System</td>

<td>WCDMA</td><td>Division Multiple Access by Band Code Wide</td>

<td>WiMAX</td><td>Global Interoperability for Access by Microwave</td>

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The ubiquitous development anticipated of the wireless used for what is

Communication

Machine Type (MTC) will result in wireless devices being placed devices known as being outside the common radio coverage of existing radio networks, eg. , in cellars and similar places. One way to improve radio coverage is to expand the radio access network infrastructure, such as adding additional Radio Base Station (RBS) equipment. This, however, will very soon result in an unreasonable investment effort and may not be acceptable to operators.

An alternative approach to adding more equipment is to keep the existing radio access network infrastructure unchanged, however, improve radio coverage through new radio transmission and reception techniques as well as new algorithms. of Radio Resources Management. The latter approach is being discussed in and is a topic for an effort in the wireless industry of standardization, by

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Generation (3GPP)

Draft

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Association

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Third as described in the Technical Report

3GPP TR 36,824

Vil.0.0, entitled Radio Access

Evolved Universal Terrestrial (E-UTRA); improvements

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<img file="MX360506B_D0013.tif" />

LTE coverage and 3GPP TSG-GERAN Meeting # 62 Description of Work Item GP-140421, titled New Study Item in Cell System Support for Ultra Low Complexity and Low Performance Internet of Things ..

Although there are many techniques that can be used to improve radio coverage, one technique is to improve radio coverage through the use of repeated transmissions. The technique of repeated transmissions is currently being considered in the context of the related standardization work in 3GPP TSG RAN, as described in the aforementioned 3GPP TR 3 6.824 Vil.0.0 Technical Report, entitled Evolved Universal Terrestrial Radio Access (E-UTRA ); LTE coverage improvements as well as in 3GPP TSG GERAN as described in the Technical Report 3GPP TR 45.820 VI.3.0, entitled Cellular System Support for Ultra Low Complexity and Low Performance of Internet of Things.

A problem seen with existing solutions associated with the repeated transmission technique described in the Technical Reports mentioned above is that neither the wireless device nor the network, in this case, the Radio Access Network (RAN) node responsible for the

<img file="MX360506B_D0014.tif" />

IMPIOUS?

MEXICAN INSTITUTE i

PROPERTY νΤ * = ξ® · INDUSTRIAL ^!-ΚΤ repeated transmissions (eg, Evolved Node B (eNB) in Long Term Evolution (LTE), the Controller of

Radio Network (RNC) in 3G, or the Station Controller

Base (BSC) in 2G), you are aware of the applicable Radio Coverage Category (RCC) when you initiate a new uplink or downlink data transmission for a wireless device. This can, to a large extent, result in too few or too many repeated transmissions during the initial phase of the 10 data transmissions with the wireless device (eg. , a period during which the wireless device specific RCC information is not known by the RAN node). For example, very few repeated transmissions can initially be applied to all 15 transmissions, resulting in a failed data transmission, because a number of transmissions may be transmissions (estimated repeated, then repeated, failed number but still data are needed). scarce resources with wrong initial where needed. This by another base series on a better than repeated transmissions that derived resulting from radio.

of in

From transmission to inefficient use alternatively, too many repeated transmissions may initially be applied to transmissions, resulting in use

IMPI

MEXICAN INSTITUTE

Ine ^ ο-Λ-ί ^ ¿&amp; INDUSTRIAL PROPERTY inefficient from scarce radio resources, adding network interference and consuming too much energy, etc.

Since a large part of the applications associated with MTC (including Internet of Things (IoT)) will be used predominantly to transfer small amounts of data (eg. , electricity measurement data, temperature sensor data, etc.), an improved mechanism to accurately determine the number of repeated transmissions needed to and / or from a wireless device would be very valuable, if not a Critical requirement to be met during the initial phase of downlink or uplink data transmission between the RAN node and the wireless device. This need and other needs are addressed by the present disclosure.

Patent US 2004/0098761 Al describes a method and apparatus for improving the fit of Machine Type Communication (MTC) devices. In one embodiment, an MTC (wireless transmit / receive unit) device may provide Evolved Node B (sNB) information regarding coverage limitation, which may include one or more of the following:

IMPI

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transmission of the Preamble of the Physical Random Access Channel (PRACH), the measurement of the Reference Signal Received Power (RSRP) / Reference Signal Received Quality (RSRQ) used for the selection criteria of the appropriate cell, the number of peamble repetitions and retransmissions and the number of repetitions of the Packet Associated Control Channel (PDCCH) and the Physical Downlink Shared Channel (PDSCH) that are needed for the Random Access Reception (RAR)

SHORT DESCRIPTION

A wireless device, a RAN node, a CN node and various methods for solving at least the aforementioned need are described in the independent claims. Advantageous embodiments of the wireless device, the RAN node, the CN node, and the various methods are further described in the dependent claims.

In one aspect, the present invention provides a wireless device configured to communicate with

<td>a RAN node</td><td>and a node</td><td>CN.</td><td>The</td><td>device</td><td colspan="2">wireless</td>

<td>comprises a</td><td>processor</td><td>and</td><td>a</td><td colspan="2">memory that</td><td>stores</td>

<td>instructions</td><td>executable</td><td>by</td><td>the</td><td>processor,</td><td>in</td><td>where he</td>

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processor forms the interface with memory to execute the instructions executable by the processor, through

<td colspan="4">of which the wireless device is operable to</td>

<td>perform</td><td>a</td><td>first receiving operation,</td><td>a</td>

<td>operation</td><td>of</td><td>estimation, a mapping operation,</td><td>a</td>

<td>operation</td><td>of</td><td>transmission and a second operation</td><td>of</td>

<td>reception.</td><td>In</td><td>the first receive operation,</td><td>the</td>

<td colspan="4">wireless device is operable to receive, from</td>

the RAN node, the control channels. During the estimation operation, the wireless device is operable to estimate a downlink radio condition based on a received quality control. On wireless device

<td>of</td><td>signal of</td><td>the</td><td>channels</td><td>of</td>

<td>the</td><td>operation</td><td>of</td><td>mapping,</td><td>the</td>

<td>is</td><td>operable</td><td>for</td><td>map out</td><td>the</td>

downlink estimated for link radio condition one of a plurality of downlink Radio Coverage Category (RCC) values. In the transmission operation, the wireless device is operable to transmit to the RAN node, a first message that includes the value of the downlink RCC. In the second receive operation, the wireless device is operable to receive, from the RAN node, a second message having a number of repeated downlink transmissions based on the downlink RCC value. The wireless device

IMPÍ

MEXICAN INSTITUTE OF INDUSTRIAL PROPERTY

<img file="MX360506B_D0017.tif" />

configured to operate in this way will solve the need, in the most advanced technology, effectively using scarce radio resources, reducing network interference and reducing the consumption of battery power of the wireless device, etc., during the initial phase of data transmission.

In another aspect, the present invention provides a method in a wireless device configured to communicate with a RAN node and a CN node. The method comprises a first reception step, an estimation step, a mapping step, a transmission step and a second reception step. In the first receive step, the control channels are received from the RAN node. In the estimation step, a downlink radio condition is estimated based on a signal quality of the received control channels. In the mapping step, the estimated downlink radio condition is mapped to one of a plurality of downlink Radio Coverage Category (RCC) values. In the transmission step, a first message is transmitted to the RAN node, where the first message includes the downlink RCC value. In the second reception step, a second message is received from the RAN node, where the second message has a

I

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<img file="MX360506B_D0019.tif" />

INSTITUTO MEXICANO DE LA PROPIEDAD INDUSTRIAL number of repeated downlink transmissions based on the downlink RCC value. The method will address the need for the most advanced technology by effectively utilizing scarce radio resources, reducing network interference, and reducing the consumption of battery power from the wireless device, etc., during the initial phase of data transmission.

In yet another aspect, the present invention provides a RAN node configured to communicate with one or more wireless devices and a CN node. The RAN node comprises a processor and at least one memory that stores instructions executable by the processor, where the processor interfaces with the at least one memory to execute the instructions executable by the processor, through which the RAN node is operable to carry out a first transmission operation, a reception operation and a second transmission operation. In the first transmission operation, the RAN node is operable to transmit, to the one or more of the wireless devices, the control channels. In the receive operation, the RAN node is operable to receive, from one of the wireless devices, a first message that includes a first Radio Coverage Category value

IMPI

MEXICAN INSTITUTE OF INDUSTRIAL PROPERTY

<img file="MX360506B_D0020.tif" />

Downlink (RCC). In the second transmission operation, the RAN node is operable to transmit, to a wireless device, a second message that is repeated according to the first downlink RCC value included in the first message received from the wireless device. The RAN node, configured to operate in this way, will address the need for the latest technology by effectively utilizing scarce radio resources, reducing network interference, and reducing the consumption of battery power from the wireless device, etc., during the initial phase of data transmission.

In yet another aspect, the present invention provides a method at a RAN node configured to communicate with one or more of the wireless devices and a CN node. The method comprises a first transmission step, a reception step and a second transmission step. In the first transmission step, the control channels are transmitted to one or more of the wireless devices. In the receive step, a first message is received from one of the wireless devices, where the first message includes a first downlink Radio Coverage Category (RCC) value. In the second transmission step, a

IMPI

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second message is transmitted to the wireless device, where the second message is repeated according to the first downlink RCC value included in the first message received from the wireless device. The method will address the need for the most advanced technology by effectively utilizing scarce radio resources, reducing network interference, and reducing the consumption of battery power from the wireless device, etc., during the initial phase of data transmission.

In yet another aspect, the present invention provides a CN node configured to communicate with a plurality of wireless devices and a RAN node. The CN node comprises a processor and at least one memory that stores instructions executable by the processor, where the processor interfaces with the at least one memory to execute the instructions executable by the processor, through which the CN node is operable to perform a receive operation, a store operation, and a transmit operation. In the receive operation, the CN node is operable to receive, from the RAN node or one of the wireless devices, a message that includes a link Radio Coverage Category (RCC) value

<img file="MX360506B_D0022.tif" />

downlink and an uplink RCC value associated with the wireless device. In the storage operation, the CN node is operable to store the downlink RCC value and the uplink RCC value associated with the wireless device. In the transmit operation, the CN node is operable to transmit, to the RAN node, a paging or notification message to the wireless device when a downlink payload is available to the wireless device, where the paging message includes the downlink RCC value and the uplink RCC value associated with the wireless device. The CN node configured to operate in this way will address the need for the latest technology by effectively utilizing scarce radio resources, reducing network interference, and reducing the consumption of battery power from the wireless device, etc., during the phase initial data transmission.

In yet another aspect, the present invention provides a method at a CN node configured to communicate with a plurality of wireless devices and a RAN node. The method comprises a receive step, a store step and a transmit step. In the step of

IMPI

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On receipt, a message is received from the RAN node or one of the wireless devices, where the message includes a downlink Radio Coverage Category (RCC) value and an uplink RCC value associated with the wireless device. In the storage step, the downlink RCC value and the uplink RCC value associated with the wireless device are stored. In the transmission step, a paging message for the wireless device is transmitted to the RAN node when a downlink payload is available to the wireless device, where the paging message includes the downlink RCC value and the RCC value. uplink link associated with the wireless device. The method will address the need for the most advanced technology by effectively utilizing scarce radio resources, reducing network interference, and reducing the consumption of battery power from the wireless device, etc., during the initial phase of data transmission.

Additional aspects of the invention will be set forth, in part, in the detailed description, figures and any of the following claims and in part will be derived from the detailed description, or may be

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learn by practicing the invention. It should be understood that both the foregoing general description and the following detailed description are exemplary and explanatory only and are not restrictive of the invention as described.

BRIEF DESCRIPTION OF THE DRAWINGS

A more complete understanding of the present invention can be obtained by reference to the following detailed description when taken in conjunction with the accompanying drawings:

FIGURE 1 is a diagram of an exemplary wireless communication network in accordance with an embodiment of the present invention.

FIGURE 2 is a signal flow diagram showing a downlink RCC value determination process that occurs during a handoff originating from the wireless device, in accordance with an embodiment of the present invention.

FIGURE 3 is a diagram showing different wireless devices with different downlink RCC values ​​being addressed by the same message

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resource allocation according to an embodiment of the present invention.

FIGURE 4 is a signal flow diagram showing an uplink RCC value determination process that occurs during a handoff originated from the wireless device in accordance with an embodiment of the present invention.

FIGURE 5 is a signal flow diagram showing a process associated with a completed transfer of the wireless device in accordance with an embodiment of the present invention.

FIGURE 6 is a flow chart of a method practiced on a wireless device in accordance with an embodiment of the present invention.

FIGURE 7 is a block diagram showing the structures of an exemplary wireless device in accordance with an embodiment of the present invention.

FIGURES 8A-8B are a flow chart of a method implemented at a RAN node in accordance with an embodiment of the present invention.

<img file="MX360506B_D0026.tif" />

IMPI

FIGURE 9 is a block diagram showing the structures of an exemplary RAN Node according to an embodiment of the present invention.

FIGURE 10 is a flow diagram in practice at a CN node according to a method implemented with an embodiment of the present invention.

FIGURE 11 is a block diagram showing the structures of an exemplary CN node according to an embodiment of the present invention.

FIGURE 12 is a signal flow diagram showing additional steps in the process of determining the uplink RCC value that occurs during handover originating from the wireless device as shown in FIGURE 4, in accordance with another embodiment of the present invention.

FIGURE 13 is a flow chart showing additional steps in the method implemented in the wireless device shown in FIGURE 6 in accordance with another embodiment of the present invention; and

<img file="MX360506B_D0027.tif" />

<img file="MX360506B_D0028.tif" />

IMPI

MEXICAN INSTITUTE OF INDUSTRIAL PROPERTY

FIGURE 14 is a flow chart showing a further step in the method implemented at the CN node shown in FIGURE 10 in accordance with another embodiment of the present invention.

DETAILED DESCRIPTION

To describe the technical characteristics of the present invention, a discussion is first provided to describe an exemplary wireless communication network that includes multiple wireless devices, multiple RAN nodes and a CN node, each of which is configured in accordance with the present invention. (see FIGURE 1). Next, a discussion is provided to explain the basic techniques and use cases practiced by the wireless device, the RAN node, and the CN node in accordance with the present invention (see FIGURES 2-5). Following this, a discussion is provided to further explain the various techniques implemented by each of the wireless device, the RAN node, and the CN node according to the present invention (see FIGURES 6-11). Lastly, an exposition is provided to explain how the network can be updated with Coverage Class information by the wireless device according to another embodiment of the present invention (see FIGURES 12-14).

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100 exemplary wireless communications network

Referring to FIGURE 1, an exemplary wireless communication network 100 is shown in accordance with the present invention. Wireless communication network 100 includes multiple RAN nodes 102i and 102₂(only two are shown) and a Core Network node 106 (eg CN node 107) that interfaces with multiple wireless devices 104i, 104₂, 104₃... 104_n. Wireless communication network 100 also includes many well-known components, but for clarity purposes, only the components necessary to describe the features of the present invention are described herein. Furthermore, the wireless communication network 100 is described herein as a GSM / EGPRS 100 wireless communication network which is also known as an EDGE 100 wireless communication network. However, those skilled in the art will readily appreciate that the techniques of the present invention that are applied to the GSM / EGPRS 100 wireless communication network are generally applicable to other types of wireless communication systems, including, for example, WCDMA systems. , LTE and WiMAX.

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MEXICAN INSTITUTE OF INDUSTRIAL PROPERTY

<img file="MX360506B_D0032.tif" />

Wireless communication network 100 includes RAN nodes 102i and 102₂ (only two shown) that provide network access to wireless devices 104χ, 1042, 1043 ... 104_n. In this example, node RAN 102i is providing network access to wireless device 104i while node RAN 102₂you are providing network access to wireless devices 104₂, 104₃... 104_n. The RAN 102i and 102 nodes₂they are connected to CN node 106 (eg Core Network EGPRS 106 node), and in particular to CN node 107. CN node 106 is connected to an external packet data network (PDN) 108, such as the Internet and a 110 server (only one shown). Wireless devices 104χ, 104₂, 104₃... 104_n they can communicate with one or more servers 110 (only one is shown) connected to CN node 106 and / or PDN 108.

104i, 104 wireless devices₂, 104₃... 104_n they can generally refer to an end (user) terminal that joins the wireless communication network 100 and can refer to either an MTC device or a non-MTC device. Furthermore, the term wireless device is generally intended to be synonymous with the term User Equipment, or UE since that term is used by the Project for

<img file="MX360506B_D0033.tif" />

IMPI

Association of 3^S Generation (3GPP), and includes independent wireless devices, such as terminals, cell phones, smart phones, tablets, and personal digital assistants with wireless equipment, as well as wireless cards or modules that are designed to be attached to or inserted into another electronic device, such as a personal computer, electric meter, etc.

Similarly, RAN 102i and 102 nodes₂ they can generally refer to a base station in wireless communication network 100 and they can refer to RAN Nodes 102i and 102₂ They are controlled by a physically different radio network controller as well as more autonomous access points, such as so-called Evolved B Nodes (eNodeB) in Long Term Evolution (LTE) networks.

Each 104i, 104 wireless device₂, 104₃... 104_n • may include a 110i, 110 transceiver circuit₂, 110₃...

110_n to communicate with RAN 102i and 102 nodes₂ and a 112i, 112 processing circuit₂, 112₃... 112_n to process the signals transmitted from and received by the transceiver circuit 110i, 1102, 110₃... 110_n and to control the operation of the wireless device 104_x,

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104₂, 104₃... 104_n correspondent. The 110i, 110 transceiver circuit₂, 110₃... H0_n may include a 1141, 114 transmitter₂, 114₃... 114_n and a receiver 116_lz

116₂, 116₃... 116_n, which can operate in accordance with any standard, eg. , the GSM / EDGE standard. The processing circuit 112i, 112₂, 112₃... 112_n may include a II81, 118 processor₂, II83 ... 118_n and a memory 120_lz

120₂, 120₃... 120_n to store the program code to control the operation of the wireless device 104i, 104₂, 104₃... 104_n correspondent. The program code may include code for performing the procedures as described hereafter with respect to FIGURES 6 and 13.

Each RAN 102χ and 102 Node₂ may include a transceiver circuit 122_x and 122₂ to communicate with 104i, 104 wireless devices₂, 104₃... 104_n, a 124i and 124 processing circuit₂ to process the signals transmitted from and received by the transceiver circuit 122i and 122₂ and to control the operation of the wireless access node 102i and 102₂ corresponding and a 126i and 126 network interface₂ to communicate with CN node 106. Transceiver circuit 122i and 122₂ may include a 128χ and 128 transmitter₂ and a 130i and 130 receiver₂, which can operate according to any standard,

<img file="MX360506B_D0035.tif" />

MEXICAN INSTITUTE

OF THE PROPERTY

INDUSTRIAL eg. , the GSM / EDGE standard. The Processing Circuit 124_x and 124₂ may include 132i and 132 processor₂ and a memory 134i and 134₂ to store the program code to control the operation of the wireless access node 102i and 102₂ correspondent. The program code may include the code to perform the procedures as described hereafter with respect to FIGURES 8A-8B.

CN node 107 (eg SGSN 107, MME 107) may include a transceiver circuit 136 to communicate with RAN nodes 102i and 102₂, a processing circuit 138 for processing the signals transmitted from and received by the transceiver circuit 13 6 and for controlling the operation of the RAN nodes 102i and 102₂ and a network interface 140 to communicate with RAN nodes 102i and 102₂. Transceiver circuit 136 may include transmitter 142 and receiver 144, which can operate in accordance with any standard, eg. , the GSM / EDGE standard. Processing circuit 138 may include a processor 146 and memory 148 for storing the program code to control the operation of the CN node 107. The program code may include the code for performing the procedures as described hereinafter with respect to to FIGURES 10 and 14.

IMPI

MEXICAN INSTITUTE ^W OF THE PROPERTY

INDUSTRIAL

Basic techniques and exemplary use cases of the present invention

The present invention provides a new mechanism for improving radio coverage based on the exchange of uplink and downlink radio condition information, referred to as Radio Coverage Category (RCC) values, between wireless device 104₂ (for example) and network 100 (eg, RAN node 102₂ and / or CN node 107) for use in data transmission (eg, control plane related signaling or user plane related payload transmission). It should be noted that the other 104i, 104 wireless devices₃... 104_n and RAN 102i node can also execute the new mechanism of the present invention. The techniques described are based on an exchange of estimated RCC values ​​between network 100 and the wireless device.

104₂ that are used to apply a number (eg.

a predefined number) of repeated transmissions on the radio interface. RCC values ​​can be estimated for the downlink (eg, from the wireless device perspective for the uplink (eg, from the network perspective)

100). RCC values ​​can be stored on nodes

<img file="MX360506B_D0036.tif" />

IMPI

MEXICAN INSTITUTE

OF THE PROPERTY

INDUSTRIAL relevant network such as node RAN 102₂ and CN node 107 and in wireless device 104₂ to be used to determine the appropriate number of repeated transmissions for subsequent data transmissions, for example on paging occasions.

The techniques described can execute one or more of the following principles:

• The uplink and downlink radio conditions between the RAN node

102₂ and a wireless device 104₂ They can be categorized, organized or divided into a range of RCC values.

• A value

Certain RCC is mapped into a number of repeated transmissions. The mapping of each RCC value to a specific number of repeated transmissions can be normalized and made known to network 100 (by

<td colspan="2">ex. , the RAN node</td><td>1022 and / or</td><td>the</td><td>CN node</td><td>107) and</td><td>the</td>

<td>device</td><td colspan="2">wireless 104₂.</td><td>By</td><td>therefore</td><td>a value</td><td>RCC</td>

<td>determined</td><td>can</td><td>indicate</td><td>of</td><td>shape</td><td>implicit</td><td>or</td>

explicit number of repeated transmissions and can therefore be disclosed to entities 102₂, 107 and

<img file="MX360506B_D0037.tif" />

IMPI

MEXICAN INSTITUTE

OF THE PROPERTY

<img file="MX360506B_D0038.tif" />

104₂ implicated in a deterministic way. Alternatively, the mapping can be adjusted and reported (eg in system information) to the entities involved 102₂, 107 and 104₂.

• The wireless device 104₂ provides an estimate of your downlink RCC value (relative to your service RAN Node 102₂/ cell) to network 100 in the applicable procedures and / or messages.

• The RAN 102 node₂ provides an estimate of your uplink RCC value relative to a specific wireless device 104₂ for that wireless device 104₂ in the applicable procedures and / or messages.

• Network 100 can store the information about the uplink and downlink RCC values ​​in the nodes such as the RAN node 102₂ and CN node 107 that would reuse this information in subsequent radio transmissions.

• The wireless device 104₂ can store information about link RCC values

<img file="MX360506B_D0039.tif" />

uplink and downlink and reuse this information in subsequent radio transmissions.

• The RAN 102 node₂ can load wireless device-specific RCC values ​​for the uplink and downlink associated with a wireless device 104₂ particular to the relevant CN node 107 (eg SGSN 107, MME 107). Alternatively, the wireless device specific RCC information can be carried by wireless device 104₂ to node CN 107, for example, during signaling of the Non-Access Stratum (ÑAS).

• The RAN 102 node₂ applies a number of repeated downlink transmissions on the radio interface based on the specific downlink RCC value of the wireless device. The RCC value used to determine the number of repeated transmissions on the downlink may be based on the last RCC value received from wireless device 104₂, network 100 (eg RAN node 102₂) estimates of the downlink RCC value (eg based on the uplink radio quality), or a running average of the RCC values ​​of

IMPI

MEXICAN INSTITUTE OF INDUSTRIAL PROPERTY

<img file="MX360506B_D0040.tif" />

received downlink and / or estimated downlink RCC values ​​from network 100 (eg, RAN Node 102₂) .

• The wireless device 104₂ applies a number of repeated uplink transmissions based on the available uplink RCC value received from RAN node 102₂. The RCC value used to determine the number of repeated transmissions on the uplink may be based on the last estimated uplink RCC value, received from network 100 (eg, RAN node 102).₂), the estimates of the wireless device 104₂ the uplink RCC value (eg, based on the quality of the downlink radio), or a running average of the received uplink RCC values ​​and / or the estimated uplink RCC values ​​from the wireless device 104₂.

• For the case when the wireless device 104₂makes its first contact with node RAN 102₂ after initial deployment of wireless device and power in the field or when wireless device 104₂wakes up to perform a system access procedure after a period of suspension, the number of

MEXICAN INSTITUTE OF INDUSTRIAL PROPERTY

<img file="MX360506B_D0041.tif" />

repeated broadcasts than wireless device 104₂ used when performing a random access procedure (eg sending a first message on the Random Access Channel (RACH), such as a Channel Request Message on the RACH) can be based on (1) the evaluation independent of the wireless device itself from an appropriate uplink RCC value, or (2) the wireless device's preconfigured information from an appropriate uplink RCC value.

• Network 100 (eg, RAN node 102₂) applies a number of repetitions based on a stored RCC of the wireless device 104₂. This may proceed, for example, when paging is done to wireless device 104₂ or a first message is answered on the Random Access Channel (RACH), such as a Channel Request Message on the RACH.

• The RAN 102 node₂ and the wireless device 104₂they can make use of the knowledge about the type of use of the wireless device, for example, being a fixed device, which can be pre-configured in the wireless device 104₂ and in eg , the subscription data in network 100 when you decide whether to apply or not

<img file="MX360506B_D0042.tif" />

a number of repetitions according to the stored RCC.

Referring to FIGURE 2, it is a signal flow diagram showing a downlink RCC value determination process that occurs during a handoff originated from the wireless device in accordance with an embodiment of the present invention. Before accessing the RAN 102 node₂, the wireless device 104₂ receives (eg monitors) some specific series of Radio Access Technology (RAT) from the control channels in order, for example, to obtain synchronization with the RAN 102 node₂ (See step 1 of FIGURE 2). In the case of the Global System for mobile communications (GSM), before having access to the GSM / EDGE Radio Access Network (GERAN), the wireless device 104₂ It will monitor the Synchronization Channel (SCH) and the Frequency Correction Channel (FCCH). After decoding the SCH, the wireless device 104₂ it can also decode the System Information (SI) transmitted on the Broadcasting Control Channel (BCCH). SCH, FCCH and BCCH in GSM are constantly transmitted in full power.

<img file="MX360506B_D0043.tif" />

IMPI fvirrin irro MTYlCANO

The wireless device 1042 uses the received control channels to estimate its experienced downlink radio condition based on, for example, a Received Signal Strength Indicator (RSSI), an estimated received quality (eg, the quality Decoded SCH and System Information), or any other metric that estimates the downlink radio condition of the wireless device (see step 2 of FIGURE 2).

Wireless device 1042 maps the estimated downlink radio condition to one of the multiple downlink RCC values ​​(see step 3 of FIGURE 2 and graph A). In this example, an RSSI-based mapping is shown where the estimated RSSI value maps to one of four different downlink RCC values. It should be noted that the number of downlink RCC values ​​and the number of transmissions for each of the downlink RCC values ​​shown in FIGURE 2 (i.e. 1 transmission for RCC 0, 2 transmissions for RCC 1 , 4 transmissions for RCC 2 and 16 transmissions for RCC 3) are provided as examples. In other cases, there may be fewer or more downlink RCC values ​​and / or different numbers

MEXICAN INSTITUTE

OF INDUSTRIAL PROPERTY of transmissions may be associated with values

Downlink RCC.

Wireless device 1042 transmits a message 202 that includes the downlink RCC value to node RAN 102₂ (see step 4 of FIGURE 2). More specifically, when accessing the RAN 102 node₂ for some data transmission originating from the wireless device, wireless device 104₂ provides the downlink specific RCC value in an appropriate RRC 202 message (eg, Channel 202 Request Message in GERAN, RRC Connection Request (RRCConnectionRequest) 202 in LTE or UMTS) or some message during a radio capacity acquisition. A means by which the wireless device 104₂ can communicate a specific downlink RCC value to node RAN 102₂ (eg BSS 102₂) is described in US Patent Application No. 61 / 968,621, filed on March 21, 2014, titled Accelerated System Access Procedure (ASAP).

The RAN 102 node₂ determines a downlink RCC value to be used by wireless device 104₂ (see step 5 of FIGURE 2). The RAN 102 node₂ can determine the link RCC value

IMPI

MEXICAN INSTITUTE OF INDUSTRIAL PROPERTY

<img file="MX360506B_D0044.tif" />

downstream that will use the wireless device 104₂ based on: (1) the first received downlink RCC value (eg, the downlink RCC value from step 4 of FIGURE 2); (2) an estimated downlink RCC value (eg, based on the uplink radio conditions); or (3) a running average of the first previously received downlink RCC values ​​and / or the previously estimated downlink RCC values. For example, node RAN 102₂ can estimate the downlink specific RCC value based on the uplink radio condition for wireless device 104₂ and you can combine this with the RCC value estimated by the wireless device 104₂same when determining the downlink RCC value to be used by wireless device 104₂. Also, the particular algorithm used by RAN node 102₂ The determination of the downlink RCC value used may be implementation dependent.

The RAN 102 node₂ maps the determined downlink RCC value to a number of repeated downlink transmissions to be used for downlink message 205 to wireless device 104₂(See step 6 of FIGURE 2 and graph A; note: the node

<img file="MX360506B_D0045.tif" />

<img file="MX360506B_D0046.tif" />

INSTITUTO MEXICV 'O DE U EROHEDAD INDUSTRIAL

RAN 102₂ it also maps the downlink RCC value received in step 4 of FIGURE 2 to a number of repeated downlink transmissions to be used for the downlink message 204 transmitted to wireless device 104₂). Then node RAN 102₂ transmits to wireless device 104₂ a message 204 (eg, Immediate Assignment Message) that repeats according to the downlink RCC value received from wireless device 104₂(see step 6a of FIGURE 2). Message 204 would include the downlink RCC value determined from the RAN node in step 5 of FIG. 2 if it is different from the downlink RCC value of the wireless device in message 202. After this, the RAN node 102₂ transmits to wireless device 104₂ the subsequent downlink message 205 having a number of repeated downlink transmissions based on the determined downlink RCC value of the RAN node (see step 7 of FIGURE 2). Basically if the RAN node 102₂ you decide to use a downlink RCC value that is different from the downlink RCC value sent by wireless device 104₂in step 4 of FIGURE 2, then node RAN 102₂will indicate this to the wireless device 104₂ including the downlink RCC value determined in the

IMPI

MEXICAN INSTITUTE OF INDUSTRIAL PROPERTY

<img file="MX360506B_D0047.tif" />

first downlink message 204 that is always sent with repeated transmissions according to the downlink RCC value sent by wireless device 104₂ in step 4 of FIGURE 2.

It should be noted that the number of repetitions may be different, for example, depending on the logical channel that is associated with the downlink message 204 or 205 to be transmitted to the wireless device 104₂. For example, in GERAN, node RAN 102₂ may apply a first number of repeat transmissions according to the downlink RCC value determined when the Immediate Assignment Message is transmitted

204 at

Access Grant Channel (AGCH), but it applies a second number of repetitions, for example, when transmitting a message of

Power Control by

Package / Advance

Temporary 205 in the

Channel of

Control

Associated by

Package

Similarly, in the Node

RAN 102_z, the number of repetitions used for the

Signaling of

Radio carriers may be different from the number used for Radio Carriers

Radio data.

It should be noted that when using a repeat-only scheme and when devices

<img file="MX360506B_D0048.tif" />

Multiple Wireless IMPI 104₂, 1043 and 104₄ (for example) are addressed by the same message 204 or 205, there is no need for all wireless devices 104₂, 1043 and 104₄ have the same downlink RCC value. The number of repetitions used instead can be determined by wireless device 104₄ (for example) the one with the highest downlink RCC value (i.e. the worst coverage). An example of this message format is shown in FIGURE 3, where wireless devices 104₂, 104₃ and 104₄ they are addressed by the same resource allocation message 204. In this example, resource allocation message 204 in the same AGCH is repeated 16 times due to Coverage Class of wireless device 104₄ (mapped to 16 repeats), while wireless devices 104₂ and 104₃ having lower Coverage Class (i.e. needs fewer repeats) will be able to read the same resource allocation message 204 after decoding the number of respective repeats according to their RCC Coverage Class (i.e. 4 repeats for the wireless device 104₂, and 8 repetitions for wireless device 104₃) .

IMPI

MEXICAN INSTITUTE OF INDUSTRIAL PROPERTY

In some embodiments, the same number of repeated transmissions according to the downlink RCC value of the wireless device (which may be different depending on the logical channel considered) can be applied to any of the downlink 204 messages, control messages or subsequent user plane 2 04, until node RAN 102₂determined eg through ACK / NACK assistance or Measurement Report information supplied by wireless device 104₂ that a different downlink RCC value could be used by wireless device 104₂ (see step 8 of FIGURE 2). Any change in the downlink RCC value (number of repeated transmissions) can be signaled by the RAN node 102₂ in the control plane either explicitly via dedicated or implicit signaling eg via in-band signaling to wireless device 104₂ (see step 9 of FIGURE 2). When a change in the downlink RCC value is explicitly signaled, the number of repeated transmissions used by the RAN node 102₂ it is determined using the downlink RCC value that you have stored for wireless device 104₂ before deciding whether to make the change to the downlink RCC value. Similar to the downlink, the RAN node

IMPI

MEXICAN INSTITUTE

OF THE PROPERTY

INDUSTRIAL Τγ, νΖ »

102₂ can estimate · the applicable RCC value on the uplink for a wireless device 104₂determined. This process is described below with respect to FIGURE 4.

Referring to FIGURE 4, it is a signal flow diagram showing an RCC value determination process. uplink that occurs during a handoff originated from the wireless device in accordance with an embodiment of the present invention. The RAN 102 node₂ receives message 202 (eg, Channel 202 Request Message, RRC 202 Connection Request message) on the RACH from wireless device 104₂(See step 1 of FIGURE 4). For the case when the wireless device 104₂ makes its first contact with node RAN 102₂ after initial deployment of the wireless device and power in the field or when you wake up to perform a system access procedure after a period of suspension, the number of retransmissions that the wireless device 104₂ used when sending RACH bursts for Channel Request Message 02 (RRC Connection Request Message 202) in the RACH can be based, for example, on the independent evaluation of the wireless device itself of a link RCC value

<img file="MX360506B_D0049.tif" />

Appropriate upstream IMPI (eg, based on estimated downlink radio condition from step 2 of FIGURE 2) or preconfigured information (see note 1 to FIGURE 4).

The RAN 102 node₂ estimates an uplink RCC value based on a quality (eg, RSSI) of the received message 2 02 (see step 2 of FIGURE 4 and graph A). In this example, an RSSI-based mapping measurement is shown where an estimated RSSI value of the uplink radio conditions associated with the received message 02 02 is mapped to one of four different uplink RCC values. It should be noted that the number of uplink RCC values ​​and the number of transmissions for the uplink RCC values ​​shown in FIGURE 4 (i.e. 1 transmission for RCC 0, 2 transmissions for RCC 1, 4 transmissions for RCC 2 and 16 transmissions for RCC 3) are provided as examples. In other cases, there may be fewer or more uplink RCC values ​​and / or different numbers of transmissions may be associated with the uplink RCC values.

IMPI

Mexican INSTITUTE I INDUSTRIAL PROPERTY

<img file="MX360506B_D0050.tif" />

The RAN 102 node₂ adds (inserts, includes) the uplink RCC value to message 204 (eg, Immediate Assignment Message 204 or any other RRC 204 message after Channel 202 Request Message) transmitted to a wireless device 104₂ (see step 3 of FIGURE 4). The uplink RCC value reported to wireless device 104₂ it may be, for example, the last uplink RCC value estimated by the RAN node 102₂, a running average of the previously estimated uplink RCC values ​​and / or the estimated or used downlink RCC values ​​for that wireless device 104₂ particular.

The Wireless Device 104₂ Map the uplink RCC value over a number of uplink repeats (see step 4 of FIGURE 4 and graph A). Then, before the termination of the connection, the wireless device 104₂ applies the number of uplink repeats on all subsequent 206 uplink messages transmitted on the RACH and on the uplink of any assigned Packet Data Traffic Channel (PDTCH) or Packet Associated Control Channels (PACCH) subsequent to node RAN 102₂ (See step 5 of the

IMPI

MEXICAN INSTITUTE

OF THE PROPERTY

INDUSTRIAL

<img file="MX360506B_D0051.tif" />

FIGURE 4). After termination of connection the wireless device 104₂ optionally you could continue to use your stored uplink RCC value (see step 9 of FIGURE 4) for subsequent uplink 202 messages transmitted on the RACH (see step 1 of FIGURE 4) if they are transmitted within a period limited time after the most

<td colspan="6">recently received the uplink RCC value on</td>

<td>message 204</td><td colspan="5">(see step 3 of FIGURE 4).</td>

<td>The device</td><td>wireless</td><td> 104₂</td><td>keep going</td><td>using</td><td>the</td>

<td>RCC value of</td><td colspan="2">uplink</td><td>for the</td><td>messages</td><td>of</td>

uplink 206 until a new uplink RCC value is received from RAN node 102₂ (see step 6 of FIGURE 4). The Wireless Device 104₂ can receive new uplink RCC value from RAN node 102₂, for example either in a control message or in an implicit form (eg packet uplink ACK / NACK message indicating failed uplink reception).

The RAN 102 node₂ You can store the RCC values ​​applicable to both the uplink and the downlink together with a Temporary Logical Link Identifier (TLLI) or other relevant local identifier of the

IMPI

<img file="MX360506B_D0052.tif" />

wireless device 104₂ (see step 7 of FIGURE 4; note: step 7 is also commonly performed immediately after or as part of step 2). Then, upon termination of the connection (eg, the RRC connection) between the RAN node 102₂ and the wireless device 104₂, the RAN 102 node₂ it can transmit the RCC values ​​applicable to both the uplink and the downlink, together with a TLLI identifier or other relevant local identifier of the wireless device 104₂ to CN node 107 (see step 8 of FIGURE 4). For example, node RAN 102₂ you can include the uplink and downlink RCC values ​​as supplemental information when you send the received messages 206 from step 5 to CN 107. Additionally or alternatively, wireless device 104₂ You can store the RCC values ​​applicable to both the uplink and downlink (see step 9 in FIGURE 4; note: step 9 can also occur immediately after step 1 and step 4). In addition, the wireless device 104₂ You can transmit RCC values ​​for both the uplink and downlink to CN node 107, for example, through ÑAS signaling (eg, within a periodic Routing Area Update (RAU) message) (see step 10 of FIGURE 4). In this case, if the wireless device 104₂ makes

IMPI

<img file="MX360506B_D0053.tif" />

step 10 then node RAN 102₂ you would not need to include the uplink and downlink RCC values ​​as supplemental information when sending the received messages 206 from step 5 to CN 107.

Referring to FIGURE 5, it is a signal flow diagram showing a process associated with a completed handover of the wireless device in accordance with an embodiment of the present invention. Node CN 107 supplies node RAN 102₂ stored RCC values ​​for uplink and downlink for wireless device 104₂ during a completed transfer of the subsequent wireless device. More specifically, CN node 107 transmits a paging message 208 with the stored RCC values ​​for uplink and downlink when a downlink payload is available to wireless device 104₂ (see step 1 of FIGURE 5). Remember: RAN node 102₂ and / or wireless device 104₂ at the end of the previous connection it loaded the RCC values ​​for the uplink and downlink to CN node 107 (see steps 8 and 10 in FIGURE 4).

IMPI ^{, NST,}¿Y7 ° ^I*'spout ^DE THE 'NDUSTRIAL PROPERTY

<img file="MX360506B_D0054.tif" />

The RCC values ​​for both the uplink and downlink can be sent together in paging message 208 with a date indicating the time the RCC values ​​were uploaded to CN node 107 and including cell identifier information about the cells where the wireless device 104₂ was connected when these RCC values ​​were obtained. This information and if additional information is desired can also be provided in paging message 208 to allow RAN node 102₂ Evaluate the reliability of the downlink and uplink RCC values. RCC values ​​for uplink and downlink can be sent with paging message 208 using the relevant interface, eg Gb, iu, SIAP.

The RAN 102 node₂ (eg BSC 102₂ in 2G, the RNC 102₂on 3G, or eNB 102₂ in LTE) you can use the received downlink RCC value to determine the repeat paging number for paging message 208 'to be transmitted to wireless device 104₂ (see step 2 of FIGURE 5). The RAN 102 node₂ then transmits paging message 208 'using the determined paging repeat number to wireless device 104₂ (see step 3 of FIGURE 5).

IMPI

<img file="MX360506B_D0055.tif" />

Also, the RAN 102 node₂ you can add the uplink RCC value to the paging message 208 'itself and thus allow wireless device 104₂Map and use a specific number of uplink repeats during the activated random access procedure to transmit a corresponding paging response 210 to the RAN node 102₂ (see steps 4 and 5 of FIGURE 5). Otherwise, the RAN 102 node₂ can determine that the RCC values ​​for the uplink and downlink received from CN node 107 are out of date, then in this case the paging message 208 'sent to wireless device 104₂may be repeated a maximum number of times and the uplink RCC value communicated in paging message 208 'to wireless device 104₂ it can be set to the highest value (i.e. a maximum number of repetitions) (see note 1 in FIGURE 5). The subsequent behavior of the wireless device 104₂ and the RAN 102 node₂ it may be the same as described above with reference to transfer originating from the wireless device in FIGURES 2-4.

Detailed techniques executed by the devices Referring to FIGURE 6, it is a flow chart of a method 600 executed on a wireless device

<img file="MX360506B_D0056.tif" />

IMPI iKjcTiTirrn μγυιΓανω

104₂ (for example) according to an embodiment of the present invention. At step 602, wireless device 104₂ receives (eg monitors) some specific RAT series from the control channels in order, for example, to obtain synchronization with the RAN node 102₂ (See step 1 of FIGURE 2). At step 604, wireless device 104₂ estimates a downlink radio condition based on a signal quality (eg RSSI) of the received control channels (see step 2 of FIGURE 2). At step 606, wireless device 104₂ maps the estimated downlink radio condition to one of the multiple downlink RCC values ​​(see step 3 of FIGURE 2 and graph A). At step 608, wireless device 104₂ transmits a message 202 (eg Channel 202 Request Message) that includes the downlink RCC value to node RAN 102₂ (see step 4 of FIGURE 2). If message 2 02 (eg Channel 202 Request Message) is the first contact of the wireless device with the RAN node 102₂, then the wireless device 104₂ you may have previously determined in step 608 'an estimated number of repeated uplink transmissions (eg, based on estimated downlink radio condition or pre-configured information) to be used

IMPI

<img file="MX360506B_D0057.tif" />

when message 202 is transmitted to node RAN 102₂ (See note 1 of FIGURE 4).

At step 610, wireless device 104₂ receives the downlink message 204 (eg, Immediate Assignment Message 204) which has a number of repeated downlink transmissions and includes an uplink RCC value (see step 7 of FIGURE 2 and step 3 of FIGURE 4). Remember: the number of downlink transmissions repeated in the downlink message 204 is based on the downlink RCC value sent by wireless device 104₂ in message 202 (see step 4 of FIGURE 2 and step 1 of FIGURE 4). In addition, message 204 may include the determined downlink RCC value of the RAN node to be used for subsequent downlink 205 messages (see step 6a of FIGURE 2). At step 612, wireless device 104₂ Maps the uplink RCC value (included in message 204) to determine a number of uplink repeats (see step 4 of FIGURE 4 and graph A '). At step 614, wireless device 104₂ transmits an uplink message 206 that repeats according to the number of repeated uplink transmissions to the RAN node

<img file="MX360506B_D0058.tif" />

IMPI

MEXICAN INSTITUTE

OF THE PROPERTY

INDUSTRIAL

1022 (see step 5 of FIGURE 4). The Wireless Device 104₂ would continue to use the uplink RCC value for subsequent uplink 206 messages until a new uplink RCC value is received from node RAN 102₂ (see step 6 of FIGURE 4). At step 616, wireless device 104₂ stores the RCC values ​​applicable to both the uplink and downlink (see step 9 in FIGURE 4). At step 618, wireless device 104₂ it can transmit the RCC values ​​for both the uplink and downlink to CN node 107 (see step 10 of FIGURE 4).

At step 620, wireless device 104₂ receives from node RAN 102₂ paging message 208 'having a downlink repetition number and an uplink RCC value (see step 3 of FIGURE 5; remember: paging message 208' would be sent when CN node 107 has new payload downlink for wireless device 104₂). The number of repeat downlink repeats used in paging message 208 'may be based on the downlink RCC value previously sent by wireless device 104₂ or the RAN 102 node₂ to node CN 107 (see steps 1-2 of FIGURE

<img file="MX360506B_D0059.tif" />

MEXICAN INSTITUTE OF INDUSTRIAL PROPERTY

5) or a maximum number of downlink repeats (see note 1 to FIGURE 5). The uplink RCC value in paging message 208 'may be the uplink RCC value previously sent by wireless device 104₂ or the RAN 102 node₂ to CN node 107 (see steps 1-2 of FIGURE 5) or a maximum number of uplink repeats (see note 1 of FIGURE 5). At step 622, wireless device 104₂ Maps the uplink RCC value to determine a specific number of uplink repeats to use when transmitting paging response 210 corresponding to node RAN 102₂ (see step 4 of FIGURE 5). At step 624, wireless device 104₂transmits paging response 210 using the determined number of uplink repeats to node RAN 102₂ (see step 5 of FIGURE 5). For a more detailed description of steps 602, 604, 606, 608, 610, 612, 614, 616, 618, 620, 622 and 624, reference is made to FIGURES 2, 4 and 5.

Referring to FIGURE 7, it is a block diagram showing the structures of a wireless device 104₂ instance configured to interact with node RAN 102₂ and node CN 107 according to a modality of

MEXICAN INSTITUTE

OF THE PROPERTY

INDUSTRIAL the present invention. In one embodiment, wireless device 104₂ it can consist of a first reception module 702, an estimation module 704, a first mapping module

706, a first transmission module

708, a second receiving module 710, a second mapping module

712, a second transmission module

714, a storage module 716, a third transmission module 718, a third reception module 720, third mapping module 722, and a fourth transmission module 724.

The first receive module 702 is configured to receive (eg, monitor) some specific RAT series from the control channels in order, for example, to obtain synchronization with the radio interface of the RAN node 102₂ (See step 1 of FIGURE 2). The estimation module 704 is configured to estimate a downlink radio condition based on a signal quality (eg, RSSI) of the received control channels (see step 2 of FIGURE 2). The first mapping module 706 is configured to map the estimated downlink radio condition to one of the multiple downlink RCC values ​​(see step 3 of FIGURE 2 and graph A). The first transmission module 708 is configured to transmit a

<img file="MX360506B_D0060.tif" />

IMPI message 202 (eg Channel 202 Request Message) that includes the downlink RCC value to node RAN 102₂ (see step 4 of FIGURE 2). The first transmission module 708 may include a determination module 708 'configured to determine an estimated number of repeated uplink transmissions (eg, based on the estimated downlink radio condition or pre-configured information) to be used when message 202 is transmitted to node RAN 102₂ if message 202 (eg, Channel 202 Request Message) is the first contact of the wireless device with the RAN node 102₂, (see note 1 of FIGURE 4).

The second receive module 710 is configured to receive a 2 04 downlink message (eg, Immediate Assignment Message 204) that has a number of repeated downlink transmissions and includes an uplink RCC value (see step 7 of FIGURE 2 and step 3 of FIGURE 4). Remember: the number of downlink transmissions repeated in the downlink message 204 is based on the downlink RCC value sent by wireless device 104₂ in message 2 02 (see step 4 of FIGURE 2 and step 1 of FIGURE 4). Also, message 204 may include the node's downlink RCC value.

<img file="MX360506B_D0061.tif" />

MEXICAN INSTITUTE OF INDUSTRIAL PROPERTY

RAN determined to be used for subsequent downlink 2 05 messages (see step 6a of FIGURE 2). The second mapping module 712 is configured to inappear the uplink RCC value (included in message 204) to determine a number of uplink repeats (see step 4 of FIGURE 4 and graph A¹). The second transmission module 714 is configured to transmit an uplink message 206 having the estimated number of repeated uplink transmissions to the RAN node 102₂ (see step 5 of FIGURE 4). The second transmission module 714 would continue to use the uplink RCC value for subsequent uplink 206 messages until a new uplink RCC value is received from the RAN node 102.₂ (see step 6 of FIGURE 4). The storage module 716 is configured to store the RCC values ​​applicable to both the uplink and downlink (see step 9 of FIGURE 4). The third transmission module 718 is configured to transmit the RCC values ​​for both the uplink and downlink to CN node 107 (see step 10 of FIGURE 4).

The third receiving module 720 is configured to receive from the RAN node 102₂ the paging message

IMPI

MEXICAN INSTITUTE OF INDUSTRIAL PROPERTY

<img file="MX360506B_D0062.tif" />

208 'which has a downlink repetition number and an uplink RCC value (see step 3 of FIGURE 5; remember: paging message 208' would be sent when CN node 107 has a new downlink payload for wireless device 104₂). The number of repeat downlink repeats used in paging message 208 'may be based on the downlink RCC value previously sent by wireless device 104₂ or the RAN 102 node₂ to CN node 107 (see steps 1-2 of FIGURE 5) or a maximum number of downlink repeats (see note 1 of FIGURE 5). The uplink RCC value in paging message 208 'may be the uplink RCC value previously sent by wireless device 104₂ or the RAN 102 node₂ to CN node 107 (see steps 1-2 of FIGURE 5) or a maximum number of uplink repeats (see note 1 of FIGURE 5). The third mapping module 722 is configured to map the uplink RCC value to determine a specific number of uplink repeats to be used when transmitting the paging response 210 corresponding to the RAN node 102.₂ (see step 4 of FIGURE 5). The fourth transmission module 724 is configured to transmit the

IMP

<img file="MX360506B_D0063.tif" />

paging response 210 using the determined number of uplink repeats to node RAN 102₂ (see step 5 of FIGURE 5).

As will be appreciated by those skilled in the art, modules 702, 704, 706, 708, 710, 712, 714, 716, 718, 720, 722 and 724 of the wireless device 104₂ described above can be executed separately as suitable dedicated circuits. Furthermore, modules 702, 704, 706, 708, 710, 712, 714, 716, 718, 720, 722 and 724 can also be implemented using any number of dedicated circuits through functional combination or separation. In some embodiments, modules 702, 704, 706, 708, 710, 712, 714, 716, 718, 720, 722, and 724 can even be combined into a specific application integrated circuit (ASIO). As an alternative software-based execution, wireless device 104₂ may consist of a memory 120₂, a 118 processor₂ (including but not limited to a microprocessor, microcontroller, or Digital Signal Processor (DSP), etc.) and a 110 transceiver₂. Memory 120₂ stores the machine readable program code executable by processor 118₂ to cause wireless device 104₂ perform the steps of method 600 described above.

<img file="MX360506B_D0064.tif" />

Referring to FIGURES 8A-8B, they are a flowchart of a method 800 executed on a RAN 102 node.₂ (for example) according to an embodiment of the present invention. In step 802, the RAN node 102₂ transmits control channels (eg BCCH, SCH, FCCH) to allow wireless device 104₂ (for example) get synchronization with node RAN 102₂(See step 1 of FIGURE 2). In step 804, node RAN 102₂ receives from wireless device 104₂ a message 202 (eg, Channel Request Message 202) that includes the downlink RCC value of the wireless device (see step 4 of FIGURE 2). In step 806, the RAN node 102₂ determines downlink RCC value to be used by wireless device 104₂ (see step 5 of FIGURE 2). At step 808, the RAN node 102₂ maps the determined downlink RCC value to a number of repeated downlink transmissions to be used for the downlink message 205 transmitted to wireless device 104₂ (See step 6 of FIGURE 2 and graph A; note: node RAN 102₂ it also maps the downlink RCC value received in step 8 04 of FIGURE 8 to a number of repeated downlink transmissions to be used for the downlink message 204 transmitted to the device

<img file="MX360506B_D0065.tif" />

wireless 104₂). In step 809, the RAN node 102₂transmits a first downlink message 204 (eg, Immediate Assignment Message 204) to wireless device 104₂ (see step 7 of FIGURE 2) where the number of repeated downlink transmissions used for the downlink message 204 is based on the downlink RCC value sent by wireless device 104₂ in message 202 (see step 4 of FIGURE 2). If the RAN node 102₂you decide to use a downlink RCC value that is different from the downlink RCC value received from wireless device 104₂ at step 804, then node RAN 102₂ will indicate this to the wireless device 104₂ by including the downlink RCC value determined from step 806 in the first downlink message 204. The subsequent downlink messages 205 are then transmitted in step 810 via the RAN node 102₂ to wireless device 104₂ based on the downlink RCC value determined from step 806. At step 812, the RAN node 102₂, determines eg. , through the assistance of ACK / NACK or Measurement Report Information supplied by the wireless device 104₂that a new downlink RCC value will be used by wireless device 104₂ (see step 8

IMPI

MEXICAN INSTITUTE

OF THE PROPERTY

INDUSTRIAL FIGURE 2). In step 814, the RAN node 102₂ transmits the new downlink RCC value (number of repeated transmissions) to wireless device 104₂ (see step 9 of FIGURE 2). The number of repeated transmissions used by the RAN node 102₂to transmit the message containing the new downlink RCC value is determined using the downlink RCC value that has been stored by wireless device 104₂ before deciding to use a new downlink RCC value.

In step 816, the RAN node 102₂ after receiving message 202 (eg, Channel 202 Request Message) in step 804 it will also estimate an uplink RCC value for wireless device 104₂ based on a quality (eg, RSSI) of the received message 202 (see step 2 of FIGURE 4 and graph A). In step

818, node RAN 102₂ appends (inserts, includes) the estimated uplink RCC value to message 204 (eg, Immediate Assignment Message 204) that is transmitted during step 810 to a wireless device 104₂ (see step 3 of FIGURE 4). In step 820, the RAN node 102₂ receives from wireless device 104₂ at least one uplink message 206 having the number of link transmissions

IMPI

MEXICAN INSTITUTE OF INDUSTRIAL PROPERTY

<img file="MX360506B_D0066.tif" />

repeated uplinks that corresponds to the uplink RCC value sent in message 204 (see step 5 of FIGURE 4). In step 822, the RAN node 102₂ transmits a new uplink RCC value if needed to wireless device 104₂ (see step 6 of FIGURE 4). In step 824, the RAN node 102₂stores the RCC values ​​applicable to both the uplink and the downlink together with a TLLI identifier or other relevant local identifier of the wireless device 104₂ (see step 7 of FIGURE 4). At step 82 6, the RAN node 102₂ may transmit the RCC values ​​applicable to both the uplink and the downlink to CN node 107 together with a TLLI identifier or other relevant local identifier of wireless device 104₂ after the

<td>termination</td><td>of</td><td>the connection</td><td>between</td><td>the device</td>

<td>wireless</td><td> 104₂</td><td>and the RAN node</td><td colspan="2"> 102₂ (See step 8 of the</td>

<td>FIGURE 4).</td><td></td><td></td><td></td><td></td>

<td>In step</td><td> 828,</td><td>node RAN 102₂</td><td>receives</td><td>from the CN node</td>

107 paging message 208 with the uplink and downlink RCC values ​​for wireless device 104₂ when a downlink payload is available for wireless device 104₂ (see step 1 of FIGURE 5). In step

IMPI

MEXICAN INSTITUTE OF INDUSTRIAL ERO PIEDAD

<img file="MX360506B_D0067.tif" />

830a, node RAN 102₂ you can use the received downlink RCC value to determine the repeat paging number for paging message 208 'to be transmitted to wireless device 104₂ (see step 2 of FIGURE 5). In step 832a, the RAN node 102₂ transmits paging message 208 '(including uplink RCC value) using the determined paging repeat number to wireless device 104₂ (see step 3 of FIGURE 5). In step 834a, the RAN node 102₂ receives from wireless device 104₂ paging response 210 having a number of repeated uplink transmissions based on the uplink RCC value in paging message 208 '(see step 5 of FIGURE 5). Alternatively, after step 828, the RAN node 102₂ at step 83 0b determines that the RCC values ​​for the uplink and downlink received from CN node 107 are out of date, then in this case the paging message 208 'transmitted in step 834b to wireless device 104₂ may be repeated a maximum number of times and the uplink RCC value communicated in paging message 208 'to wireless device 104₂ it can be set to the highest RCC value (ie, a maximum number of repetitions) (see note 1 to FIGURE 5). Must be

IMPI

MEXICAN INSTITUTE OF INDUSTRIAL PROPERTY

<img file="MX360506B_D0068.tif" />

note that in practice the wireless device 104₂ commonly it would be listening according to the last downlink RCC value that it carried to network 100 and so it would not be very useful for node RAN 102₂ decide autonomously to use the maximum number of repetitions. In step 834b, the RAN node 102₂receives from wireless device 104₂ paging response 210 having a higher number of repeated uplink transmissions based on the higher uplink RCC value.

Referring to FIGURE 9, it is a block diagram showing the structures of a RAN 102 Node₂ instance configured to interact with a wireless device 104₂ and a CN node 107 in accordance with an embodiment of the present invention. In one mode, the RAN node 102₂ it may consist of a first transmission module 902, a first reception module 904, a first determination module 9 06, a mapping module 908, a second transmission module 909, a third transmission module 910, a second determination module 912, a fourth transmission module 914, an estimation module 916, an addition module 918, a second reception module 920, a fifth transmission module 922, a storage module 924, a

IMPI

<img file="MX360506B_D0069.tif" />

sixth transmit module 926, a third receive module 928, a use module 930a, a seventh transmit module 932a, a fourth receive module 934a, a third determination module 930b, an eighth transmit module 932b, and a fifth module reception 934b.

The first transmission module 902 is configured to transmit the control channels (eg BCCH, SCH, FCCH) to allow wireless device 104₂(for example) get synchronization with node RAN 102₂ (See step 1 of FIGURE 2). The first receive module 904 is configured to receive from wireless device 104₂ a message 202 (eg, Channel 2 02 Request Message) that includes the downlink RCC value of the wireless device (see step 4 of FIGURE 2). The first determination module 906 is configured to determine a downlink RCC value to be used by wireless device 104₂ (see step 5 of FIGURE 2). The mapping module 908 is configured to map the determined downlink RCC value to one of multiple downlink RCC values ​​to determine a number of repeated downlink transmissions to be used by the downlink message 204 transmitted to the device

IMPI

<img file="MX360506B_D0070.tif" />

wireless 1042 (see step 6 of FIGURE 2 and graph A; note: mapping module 908 also maps the downlink RCC value received in step 4 of FIGURE 2 to a number of repeated downlink transmissions to be used by downlink message 204 transmitted to wireless device 104₂). The second transmission module 909 is configured to transmit a first downlink message 204 (eg, Immediate Assignment Message 204) to wireless device 104₂ (see step 7 of FIGURE 2) where the number of repeated downlink transmissions used for the downlink message 204 is based on the downlink RCC value sent by wireless device 104₂ in message 202 (see step 4 of FIGURE 2) (see step 6a of FIGURE 2). If the first determination module 906 decides to use a downlink RCC value that is different from the downlink RCC value sent by wireless device 104₂, then the second transmission module 909 will indicate this to the wireless device 104₂ including the downlink RCC value determined in the first downlink message 204. The third transmission module 910 is configured to transmit subsequent downlink messages 205 to the

<img file="MX360506B_D0071.tif" />

IMPI wireless device 104₂ based on the determined downlink RCC value (see step 7 of FIGURE 2). The second determination module 912 is configured to determine eg through the assistance of ACK / NACK or Measurement Report Information supplied by wireless device 104₂that a new downlink RCC value will be used by wireless device 104₂ (See step 8 of FIGURE 2). The fourth transmission module 914 is configured to transmit the new downlink RCC value (number of repeated transmissions) to wireless device 104₂ (see step 9 of FIGURE 2). The number of repeated transmissions used by the RAN node 102₂ to transmit the message containing the new downlink RCC value is determined using the downlink RCC value that has been stored in wireless device 104₂ before deciding whether to use a new downlink RCC value.

Estimation module 916 is configured after receiving message 202 (eg, Channel 202 Request Message) to estimate an uplink RCC value for wireless device 104₂ based on a quality (eg RSSI) of the received message 202 (see

IMPI

MEXICAN INSTITUTE OF INDUSTRIAL PROPERTY

<img file="MX360506B_D0072.tif" />

step 2 of FIGURE 4 and graph A). The add-on module 918 is configured to add (insert, include) the estimated uplink RCC value to message 204 (eg, Immediate Assign Message 204) that is transmitted to a wireless device 104₂ (see step 3 of FIGURE 4). The second receiving module 920 is configured to receive from wireless device 104₂ at least one uplink message 206 having the number of repeated uplink transmissions corresponding to the uplink RCC value sent in message 2 04 (see step 5 of FIGURE 4). The fifth transmission module 922 is configured to transmit a new uplink RCC value if necessary to wireless device 104₂ (see step 6 of FIGURE 4). The storage module 924 is configured to store the RCC values ​​applicable to both the uplink and the downlink together with a TLLI identifier or other relevant local identifier of the wireless device 104₂ (see step 7 of FIGURE 4). The sixth transmission module 926 is configured to transmit the RCC values ​​applicable to both the uplink and the downlink to CN node 107 along with a TLLI identifier or other relevant local identifier of the device

IMPI

MEXICAN INSTITUTE

OF THE PROPERTY

INDUSTRIAL

<img file="MX360506B_D0073.tif" />

wireless 104₂ after termination of connection between wireless device 104₂ and the RAN 102 node₂(see step 8 of FIGURE 4).

The third receive module 928 is configured to receive from the CN node 107 the paging message 208 with the uplink and downlink RCC values ​​for the wireless device 104₂ when a downlink payload is available for wireless device 104₂ (see step 1 of FIGURE 5). Usage module 930a is configured to use the received downlink RCC value to determine the repeat paging number for paging message 2 08 'to be transmitted to wireless device 104₂ (see step 2 of FIGURE 5).

The seventh transmission module 932a is configured to transmit paging message 208 '(which includes the uplink RCC value) using the paging repeat number determined to wireless device 104₂ (see step 3 of FIGURE 5).

The fourth receiving module 934a is configured to receive from wireless device 104₂ paging response 210 having a number of repeated uplink transmissions based on the uplink RCC value in the message

<img file="MX360506B_D0074.tif" />

IMPI

<img file="MX360506B_D0075.tif" />

pagination 208 '(see step 5 of FIGURE 5). As an alternative to modules 930a, 932a and 934a, the RAN node 102₂ includes the third determination module 930b which is configured to determine that the RCC values ​​for the uplink and downlink received from the CN node 107 are deprecated, then the eighth transmission module 932b is configured to transmit the paging message 208 'a number maximum repeated times to wireless device 104₂, where paging message 208 'may include an uplink RCC value set to the highest RCC value (ie, a maximum number of repeats) (see note 1 of FIGURE 5). The fifth receive module 934b is configured to receive from wireless device 104₂ paging response 210 having a higher number of repeated uplink transmissions based on the higher uplink RCC value.

As will be appreciated by those skilled in the art, modules 902, 904, 906, 908, 909, 910, 912, 914, 916, 918, 920, 922, 924, 926, 928, 930a, 930b, 932a, 932b, 934a, and 934b RAN 102 node described above₂ They may be

<td>executed</td><td>of</td><td>separate form</td><td>how</td><td colspan="2">circuits</td><td>dedicated</td>

<td>suitable.</td><td colspan="2">In addition, the modules</td><td> 902,</td><td> 904,</td><td> 906,</td><td> 908, 909,</td>

<td> 910, 912,</td><td> 914,</td><td> 916, 918, 920,</td><td> 922,</td><td> 924,</td><td> 926,</td><td>928, 930a,</td>

IMPI

<img file="MX360506B_D0076.tif" />

930b, 932a, 932b, 934a and 934b can also be implemented using any number of dedicated circuits through combination or functional separation.

In some modalities, modules 902, 904, 906, 908,

909, 910, 912, 914, 916, 918, 920, 922, 924, 926, 928,

<td>930a, 930b,</td><td>932a,</td><td>932b, 934a</td><td>and 934b</td><td colspan="2">'can be even</td>

<td>combined</td><td>in a</td><td>circuit</td><td colspan="2">integrated</td><td>of application</td>

<td>specific</td><td>simple</td><td>(SO C).</td><td>How</td><td>a</td><td>implementation</td>

<td>alternative</td><td>based</td><td colspan="2">software the</td><td>node</td><td>'RAN 102₂ can</td>

<td>consist</td><td>in a</td><td>memory</td><td> 134₂,</td><td>a</td><td>processor 132₂</td>

<td>(including</td><td colspan="2">but not limited</td><td>yet</td><td colspan="2">microprocessor a</td>

micro controller or a Digital Signal Processor (DSP), etc.) and a transceiver 122₂. Memory 134₂ stores the machine readable program code executable by processor 132₂ to cause the RAN 102 node₂perform the steps of method 800 described above.

Referring to FIGURE 10, it is a flow diagram of a method 1000 executed on a CN node 107 in accordance with an embodiment of the present invention. In step 1002, the CN node 107 receives the RCC values ​​for both the uplink and the downlink from either or both of the wireless device 104₂ and the RAN 102 node₂ after termination of connection between wireless device 104₂ and the RAN 102 node₂

IMPI

<img file="MX360506B_D0077.tif" />

(See steps 8 and 10 in FIGURE 4). In step 1004, CN node 107 stores the downlink RCC value and the uplink RCC value associated with the wireless device. In step 1006, node CN 107 transmits to node RAN 102₂ paging message 208 with the uplink and downlink RCC values ​​for wireless device 104₂ when a downlink payload is available for wireless device 104₂ (see step 1 of FIGURE 5). The RCC values ​​for both the uplink and the downlink can be sent together in paging message 208 with a date indicating the time that the RCC values ​​have been uploaded to CN node 102₂and the cell identifier information about the cells where the wireless device 104₂ was connected when these RCC values ​​were obtained. This information and if additional information is desired can also be provided in paging message 208 to allow the RAN node 102₂ Evaluate the reliability of the downlink and uplink RCC values.

Referring to FIGURE 11, it is a block diagram showing the structures of an exemplary CN 107 node configured to interact with the device.

<img file="MX360506B_D0078.tif" />

<img file="MX360506B_D0079.tif" />

MEXICAN INSTITUTE OF INDUSTRIAL PROPERTY wireless 104₂ and the RAN 102 node₂ in accordance with an embodiment of the present invention. In one embodiment, CN node 107 may consist of a receive module 1102, a storage module 1104, and a transmit module 1106. Receive module 1102 is configured to receive the RCC values ​​for both the uplink and the link. descending from either or both of the wireless device 104₂ and the RAN 102 node₂ after termination of connection between wireless device 104₂ and the RAN 102 node₂(See steps 8 and 10 in FIGURE 4). The storage module 1104 is configured to store the · downlink RCC value and the uplink RCC value associated with the wireless device. Transmission module 1104 is configured to transmit to RAN node 102₂ paging message 208 with the uplink and downlink RCC values ​​for wireless device 104₂ when a downlink payload is available for wireless device 104₂ (see step 1 of FIGURE 5). The RCC values ​​for both the uplink and the downlink can be sent together in paging message 208 with a date indicating the time the RCC values ​​were uploaded to CN node 102₂ and the cell identifier information about the

IMPI

MEXICAN INSTITUTE OF INDUSTRIAL PROPERTY

<img file="MX360506B_D0080.tif" />

cells where the wireless device 104₂ was connected when these RCC values ​​were obtained. This information and if additional information is desired can also be provided in paging message 208 to allow the RAN node 102₂ Evaluate the reliability of the downlink and uplink RCC values.

As will be appreciated by those skilled in the art, the previously described modules 1102, 1104 and 1106 of CN node 107 can be implemented separately as suitable dedicated circuits. In addition, modules 1102, 1104, and 1106 can also be run using any number of dedicated circuits through combination or functional separation. In some embodiments, modules 1102, 1104, and 1106 can even be combined into a single specific application integrated circuit (ASIC). As an alternative software-based implementation, the CN node may consist of a memory 148, a processor 146 (including but not limited to a microprocessor, a micro controller or a Digital Signal Processor (DSP), etc.) and a transceiver. 136. Memory 148 stores the machine readable program code executable by processor 146 to cause

<img file="MX360506B_D0081.tif" />

IMPI

MEXICAN INSTITUTE

OF THE RUM AGE

INDUSTRIAL that CN node 107 performs the steps of method 1000 described above.

Update of the dynamic coverage class EC-GSM

At the aforementioned 3GPP TSG-GERAN Meeting # 62, the Work Item Description GP-140421, titled New Study Item on Cellular System Support for Ultra Low Complexity and Low performance Internet of Things was approved. One of the main objectives of this work item was to increase coverage when compared to existing GPRS services. The following description describes a procedure that ensures that node CN 107 (eg. , SGSN 107) always sends a paging message 2 08 to node RAN 102₂ (eg BSS 102₂) indicating a sufficient Downlink Coverage Class (equal to or higher than that estimated by the wireless device 104₂) for node RAN 102₂ be able to successfully paginate to wireless device 104₂. In particular, FIGURES 12-14 show the steps performed by wireless device 104₂, the RAN 102 node₂ and CN node 107 to execute this new procedure (note: FIGURES 12, 13 and 14 are the same as FIGURES 4, 6 and 10 but for additional steps (see text in bold) associated with this new procedure). Even if

<img file="MX360506B_D0082.tif" />

The following description is made in the scope of an EC-GSM (packet data channel GSM operation that supports Extended Coverage when compared to legacy GSM network operation), the solutions described herein are applicable to other types of wireless communication systems, including, for example, WCDMA, LTE and WiMAX systems.

one. Paging Group Determination

When paging to a wireless EC-GSM device

104₂, in order to determine the EC-PCH blocks to be used for paging 208 ', node RAN 102₂ specific string to send the message from (eg BSS 102₂) first you need to know:

the eDRX cycle

Her and him

IMSI of the wireless device

104₂.

Downlink CC (value

Downlink RCC) is estimated by the wireless device

104₂ network 100 communicates (CN node

107). After this, the node

RAN

102₂ receives the downlink CC (RCC value of from CN node 107 and uses it to determine the

<img file="MX360506B_D0083.tif" />

IMPI

MEXICAN INSTITUTE

OF THE PROPERTY

INDUSTRIAL number of paging resources (EC-PCH blocks) that are required to be sent when paging message 208 'is sent to wireless device 104₂ in order for the network 100 to identify the location of the wireless device 104₂.

Although the EC-GSM 104 device is expected₂provide the node CN 107 (eg SGSN 107) with its estimated DL CC (downlink RCC value) within, for example, the context of the RAU procedure, the possibility remains that the wireless device 104₂change your estimated DL CC (the downlink RCC value) at any time between either of those two successive procedures (see step 11 in FIGURE 12 and step 1302 in FIGURE 13). This change in DL CC will be described in more detail later.

2. Methods for updating DL Coverage Class

2.1 DL CC Pre-Paging Group Update Provided Wireless Device Coverage Class 104₂ has deteriorated so that it is not capable of decoding paging message 208 'using the latest DL Coverage Class (downlink RCC value) provided to CN node 107 (eg SGSN 107) it is proposed to use a

IMPI

<img file="MX360506B_D0084.tif" />

cell update that requires the transmission of only a single RLC data block with the new downlink RCC value and is therefore a power efficient way to trigger a DL CC update on node CN 107 (eg SGSN 107) (see step 12 of FIGURE 12, step 13 04 of FIGURE 13 and step 1402 of FIGURE 14).

Also, to reduce the possibility of excessive signaling between wireless device 104₂ and the node

CN 107 (eg SGSN 107). The wireless device

104₂ can wait until shortly before (eg.

seconds) the next occurrence of your nominal paging group (i.e. based on your

DL

CC a cell upgrade to transport your new

DL

CC (value

Downlink RCC) to node CN 107 (eg SGSN (see FIGURE 12 step, FIGURE step 1304 and step

1402 in FIGURE 14).

Also, when you have the wireless device 104₂Waiting until just before the next occurrence of your nominal paging group to finally decide that your DL CC needs to be changed ensures that the cell update will be used with the highest

IMPI

MEXICAN INSTITUTE

OF THE PROPERTY

INDUSTRIAL

<img file="MX360506B_D0085.tif" />

possible restraint. This solution is used whenever the wireless device 104₂ switch to a higher Coverage Class (requiring more blind repeats) in order for the wireless device 104₂ be able (to a high degree of probability) to read a paging message 208 'that can be sent using your nominal paging group. This does not guarantee that the wireless device 104₂ You will always be able to read a 208 'paging message sent using the nominal paging group indicated by your recently transmitted cell update but will reduce the likelihood of losing a 208' paging message to the point where secondary paging mechanisms are not seen as that are necessary.

2.2 DL CC transaction time update

Provided that the DL Coverage Class (downlink RCC value) has been improved so that the EC-GSM device 104₂ be able to decode paging message 208 'using a smaller number of repetitions in principle there is no need to update DL Coverage Class with node CN 107 (eg SGSN 107) just before paging unless there is need to save page bandwidth. In this case, the

<img file="MX360506B_D0086.tif" />

IMPI wireless device 104₂ it can wait until the next uplink transaction to inform CN node 107 (eg SGSN 107) of the new DL CC instead of performing a cell update shortly before its next nominal paging group as described above. This is possible because the wireless device 104₂ You can safely continue to use your current DL CC (downlink RCC value) to read paging messages 208 'because wireless device 104₂ it is currently in a better Coverage Class than the node CN 107 (eg SGSN 107) currently assumes.

The easiest way for the wireless device 104₂provide the node CN 107 (eg SGSN 107) the new DL Coverage Class (downlink RCC value) is to modify the UL-UNITDATA PDU that transfers an LLC-PDU from the wireless device and its associated radio interface information through the Gb interface. This embodiment is possible because whenever an EC-GSM 104 device₂ accesses network 100 sends a RACH 202 request (eg, Channel 202 Request Message) to node RAN 102₂ (eg BSS 102₂) including an indication of its estimated DL CC (downlink RCC value) so that node RAN 102₂ (eg BSS 102₂) be able to allocate resources

<img file="MX360506B_D0087.tif" />

IMPI appropriately as well as send Immediate Assignment Message 204 with the appropriate number of repetitions (see steps 4 and 7 in FIGURE 2). This means that whenever an EC-GSM 104 wireless device₂ sends the uplink data to node RAN 102₂ (eg BSS 1022) can add the latest Coverage Class information to the ULUNITDATA PDU that it sends to node CN 107 (eg SGSN 107) (see step 12 of FIGURE 12, step 1304 of FIGURE 13 and step 1402 of FIGURE 14).

2. Conclusions

To ensure that node CN 107 (eg SGSN 107) always sends a paging message 2 08 to node RAN 102₂ (eg BSS 102₂) indicating a sufficient downlink Coverage Class (downlink RCC value) (equal or greater) for node RAN 102₂ (eg BSS 102₂) that is capable of successfully paging the wireless device 104₂ In the Extended Coverage adaptations that can be made as described above to both, the Downlink Coverage Class Update Pre-Paging Group and the downlink solutions of the transaction time update.

IMPI

MEXICAN INSTITUTE

OF THE PROPERTY

INDUSTRIAL

<img file="MX360506B_D0088.tif" />

In view of the foregoing, this invention provides a new mechanism to improve radio coverage based on the exchange of uplink and downlink radio condition information, called the Radio Coverage Category (RCC), between the wireless device 104₂ (eg) and network 100 for use in data transmission (eg, control plane related signaling or user plane related payload transmission). The techniques described are based on an exchange of estimated RCC values ​​between network 100 and wireless device 104₂ which are used to apply a number (eg, a predefined number) of repeated transmissions on the radio interface. The RCC value can be estimated for the downlink (eg, from the perspective of the wireless device

104₂) and for the uplink (eg, from the perspective of network 100). RCC values ​​can be stored on the relevant network nodes 102₂ and 107 (for example) and on the wireless device 104₂ to be used to determine the appropriate number of repeated transmissions for subsequent data transmissions, for example on paging occasions.

Some of the aspects of this invention that have been described herein include:

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MEXICAN INSTITUTE OF INDUSTRIAL PROPERTY • A deployment and initial power in the scenario where a wireless device 104₂ (for example) uses its evaluation of downlink radio conditions or preset information to determine the number of repeated transmissions that wireless device 104₂ would use when sending its first Channel 202 Request Message on the RACH.

• The use of a Channel 2 02 Request Message (the RRC Connection Request or any message transmission in the control plane or the uplink user plane) to indicate an RCC value that the wireless device 104₂ has determined that it is applicable for subsequent message transmissions to that wireless device 104₂ (eg AGCH or PDTCH). The RCC value used by the RAN node 102₂ (for example) for downlink transmissions this may be the last RCC value received from wireless device 104₂, an estimated RCC value (eg, based on uplink radio conditions), or a running average of received and / or estimated RCC values. The particular algorithm used to determine the downlink RCC value used may be a dependent run. The downlink RCC value can represent different numbers

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of repetitions depending on the logical channel or Radio Carrier used.

• The use of an Assignment Message 2 04 or any user plane on the wireless downlink device sent to a

104₂ determined (for example) to indicate a value

RCC than node RAN 102₂ (for subsequent transmissions device represent depending on certain qne of messages (eg, wireless different from that used for repeated in the

RACH

104₂.

applicable for uplinks

PDTCH) made by that

This RCC value can used logical channel repetition numbers.

determine the link number

The upstream transmissions RCC value may be based on the last RCC value received from network 100, estimated uplink the estimated uplink RCC value of the wireless device (eg, based on the downlink radio quality) , or a running average of the received and / or estimated uplink RCC value from the wireless device.

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MEXICAN INSTITUTE OF PROPERTY

INDUSTRIAL

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The techniques described here have many advantages, some of which are as follows:

• Allows a reduction in the amount of data transmission between the RAN node and the wireless device.

• Reduces the power consumption of the wireless device and therefore improves the life of the battery.

• Improves the reliability of data delivery.

• Reduces the level of interference in the network.

• Increases the capacity of the system.

• Because many of the wireless devices used for MTC are expected to be fixed, the described techniques of estimating and communicating the RCC value between the wireless devices and the network can be effective in ensuring the efficient use of radio resources at the same time that still allows the possibility of modifying the applicable RCC values, if necessary.

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IMPI

MEXICAN INSTITUTE

OF THE FROHEDAD

INDUSTRIAL

Those of skill in the art will appreciate that the use of the term exemplary is used herein to mean illustrative, or that it serves as an example, and is not intended to imply that one particular embodiment is preferred over another or that a particular feature is essential. Similarly, the terms first and second, and similar terms, are used simply to distinguish a particular case of one element or characteristic from another and does not indicate a particular order or arrangement, unless the context clearly indicates otherwise. Furthermore, the term step, as used herein, means that it is synonymous with operation or action. Any description herein of a sequence of steps does not imply that those operations must be performed in a particular order, or even that these operations are performed in any order, unless the context or details of the operation described clearly indicate so. another way.

Of course, the present invention can be carried out in other specific ways other than those set forth herein without departing from the scope and essential features of the invention. One or more of the specific processes described above can be performed on a cell phone or other transceivers of

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IMPI communications consisting of one or more appropriately configured processing circuits, which in some embodiments can be incorporated into one or more Application Specific Integrated Circuits (ASICs). In some embodiments, these processing circuits may consist of one or more microprocessors, microcontrollers, and / or Digital Signal Processors programmed with appropriate software and / or firmware to perform one or more of the operations described above, or variants thereof. In some embodiments, these processing circuits may consist of custom hardware to perform one or more of the functions described above. The modalities of the present, therefore, must be considered in all aspects as illustrative and not restrictive.

Although multiple embodiments of the present invention have been shown in the accompanying drawings and described in the above Detailed Description, it should be understood that the invention is not limited to the described embodiments, but is also capable of numerous rearrangements, modifications, and substitutions without leaving of the present invention which has been set forth and defined within the following claims.

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