Wireless communication apparatus, wireless communication system and wireless communication method.

(54) Title: RADIO COMMUNICATION DEVICE, RADIO COMMUNICATION SYSTEM AND RADIO COMMUNICATION METHOD.

(54) Title: WIRELESS COMMUNICATION APPARATUS, WIRELESS COMMUNICATION SYSTEM AND WIRELESS COMMUNICATION METHOD.

(57) Summary

The use of control of a plurality of frequency bands is carried out electively; radio communication apparatuses (1, 2) perform communication using a plurality of frequency bands; the radio communication apparatus (1) transmits to the radio communication apparatus using a first frequency band a control message including identification information indicating a second frequency band different from the first frequency band during an access procedure random; the radio communication apparatus (2) receives the control message from the radio communication apparatus (1) using the first frequency band and performs data communication using the second frequency band indicated by the identification information included in the control message.

(57) Abstract

Using a plurality of frequency bands can be efficiently controlled. Wireless communication apparatuses (1, 2) communicate with each other using a plurality of frequency bands. During a random access procedure, the wireless communication apparatus (1) uses a first frequency band to transmit a control message, which ineludes Identification Information indicating a second frequency band different from the first frequency band, to the wireless communication apparatus (2). The wireless communication apparatus (2) receives the control message transmitted by use of the first frequency band from the wireless communication apparatus (1) and uses the second frequency band, which is indicated by the Identification Information included in the control message, to perform data Communications.

Institute

Mexican Property

Industrial

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_I KNOW_

SECRETARY I3 | (COXOMY

PATENT TITLE NO. 337699

Headlines):

Home:

Denomination:

Classification:

Inventor (s):

FUJITSU LIMITED

1-1 Kamikodanaka 4-chome, Nakahara-ku, Kawasak¡-sh¡, Kanagawa, 211-8588, JAPAN

RADIO COMMUNICATION DEVICE, RADIO COMMUNICATION SYSTEM AND RADIO COMMUNICATION METHOD lnt.CI.8: H04W72 / 04; H04W74 / 08

YOSHIAKI OHTA; YOSHIHIRO KAWASAKI; TETSUYA YANO; YOSHINORI TANAKA

Number:

MX / a / 2015/007176

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intei presentation cha February 2010

Divisional Patent Number: 331436

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PRIORITY

Pallet:

Date:

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Number:

&lt;2030, 2nd fraction V, 6th fraction III, and 59 of the Property Law I

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ustrial.

The patent has a validity of twenty years, it will be subject to the payment of the fee to keep watch over the

Time: Twenty years

Expiration Date:

The reference attempt is given with fu |

From "information with article'23 of the I counted from the date áe presented rights.

Qulijn subscribes the present title to the hacicon fundai Industrial Property (Diario CXSclal de liederadón (D.

26/0 ^ / 2004, 16/06/2005, 25 / 0Ϊ / 2006, 06 / B / 2009,06 / 01/2010, 18 incl * a), 4th and 12th fractions ^! and III of the Institute's regulations 01 / (^ OOZW0 ^ 2004, 28/0 ^ 2004 and 7 / Jp / 2007); articles 1, 3, 4, 5 'fra articles 6' fractions iü and 7 ° bis 2 of the i and 02/08/1994 2fi / «¥ W9B, 12/26/1997, 17 5/1999, 1012); Articles 1, 3 I ction V __ (DOF 12/14/1999, sections I and III and 30 of the Irish Statute have been referred>; 1, 3 and 5 subsection a) of the Agreement that delegates powers to the Deputy Directors General, Coordinator, Divisional Directors, Holders of the Regional Offices, Divisional Deputy Directors, Departmental Coordinators and other subordinates of the Mexican Institute of Industrial Property. (DOF 12/15/1999, amended on 02/04/2000, 07/29/2004, 08/04/2004 and 09/13/2007).

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Sand! No 550, Floor 1,

Col. Pueblo Santa Mana Tepepan. Xochimilco CP 16020.

Mexico City

Tel (55) 53 34 0? 00 www iiTtpi.vob ι.ηχ

Issue Date: March 14, 2016

THE DIVISIONAL DIRECTOR OF PATENTS

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NAHANNY CANAL REYES

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MX / 2016/22371

337619

What ^ / ?!

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RADIO COMMUNICATION DEVICE, SYSTEM

RADIO COMMUNICATION AND METHOD OF COMMUNICATION BY

RADIO

TECHNICAL FIELD

The modality set forth herein relates to a radio communication apparatus, a radio communication system, and a radio communication method.

BACKGROUND OF THE INVENTION

A plurality of radio communication systems, such as a cellular telephone system and a radio MAN (Metropolitan Area Network 15), are currently used. To meet additional acceleration and high radio communication capabilities, a continuous approach is made to a next generation radio communication technology.

For example, in a 3GPP (3rd Association Project.

Generation) which is a standardization organization, a communication standard called an LTE (Long Term Evolution) is proposed which allows communication using a frequency band of 20

MHz maximum. Additionally, as a communication standard of

<img file="MX337699B_D0012.tif" />

Next generation of LTE, a communication standard called an LTE-A (LTE-Advanced) is proposed that enables communication using five frequency bands (particularly a 100 MHz frequency band) from 20 MHz to maximum (see , for example, non-patent literatures 1 and 2). In LTE-A, the number of frequency bands to be used is proposed to be dynamically changed according to traffic (see, for example, non-patent literature

3)·

Additionally, in a radio communication system, from a radio communication device (for example, a mobile station) to another radio communication device (for example, a base station) which performs the resource allocation control radio, you can perform random access. Random access from the mobile station to the base station is performed, for example, at the same time when (1) the mobile station first accesses the base station, (2) an allocation of the radio resources used for transmitting data to the base station, and (3) synchronization is established during data reception from the base station, and (4) synchronization is achieved with a mobile target base station during handover.

Random access includes contention-based random access and non-contention-based random access (see, for example, 10 1.5 section of non-patent literature 4, and 5.1 section of non-patent literature patent 5). In the case of random access from the mobile station to the base station, in contention-based random access, the mobile station arbitrarily selects a signal sequence from among a plurality of signal sequences and transmits it to the base station as a random access preamble. In non-contention based random access, the base station notifies the mobile station of the information in which the signal sequence is specified and the mobile station transmits a signal sequence according to the notification from the base station as the preamble random access.

Appointment List

Patent Literature:

NPTL1: 3GPP (3rd Generation Partnership Project), “Requirements for further advancements for Evolved Universal Terrestrial

Radio Access (E-UTRA) (LTE-Advanced) ”, 3GPP TR 36.913 V8.0.1, 2009-03.

NPTL2: 3GPP (3rd Generation Partnership Project), “Feasibility study for Further Advancements for E-UTRA (LTE-Advanced)”, 3GPP TR 36.912 V9.0.0, 2009-09.

NPTL3: 3GPP (3rd Generation Partnership Project), The 20 need for additional activation procedure in carrier aggregation ”, 3GPP TSGRAN WG2 # 67bis R2-095874, 2009-10.

NPTL4: 3GPP (3rd Generation Partnership Project), “Evolved Universal Terrestrial Radio Access (E-UTRA) and Evolved Universal

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Dx t

Terrestrial Radio Access Network (E-UTRAN); overall Description ”,

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36,300 V9.0.0, 2009-06.

NPTL5: 3GPP (3rd Generation Partnership Project), “Evolved Universal Terrestrial Radio Access (E-UTRA) and Evolved Universal

Terrestrial Radio Access Network (E-UTRAN); overall Description, 3GPP TS

36,321 V9.0.0, 2009-12.

BRIEF DESCRIPTION OF THE INVENTION

Technical problem

Incidentally, in a radio communication system with the ability to perform communication using a plurality of frequency bands, the number of frequency bands to be used according to traffic, as described above, is considered to be changed . However, in a method such as that described in the non-patent literature 3, after communication between radio communication devices is started (after completing a random access procedure), a procedure is performed recently, so it uses other frequency bands, except the frequency band in which the communication starts. In this method, in the case where it is shown that the other frequency bands are desired to be used before starting the communication (for example, in the case where it is shown that a data transmission amount is large), the procedure is it becomes inefficient.

In view of the foregoing, it is an object of the present invention to provide a radio communication apparatus, a radio communication system, and a radio communication method with the ability to effectively perform usage control of a plurality frequency bands.

Solution to the problem

To solve the problem described above, a radio communication device is provided, which performs communication with another radio communication apparatus using a plurality of frequency bands. The radio communication apparatus includes a receiving unit and a control unit. The receiving unit receives, through the use of a first frequency band, a control message that includes identification information indicating a second frequency band different from the first frequency band during a procedure of random access to the other communication apparatus by radio. The control unit controls the data communication between the other radio communication apparatus and the radio communication apparatus using the second frequency band indicated by the identification information included in the control message.

To solve the problem described above, a radio communication device is provided, which communicates with another

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- V. J ... * '> MEXICAN V

- · '> P-1CT-¡£ C.A3 V^to· ÍZ.OL'i; TfJAL radio communication apparatus using a plurality of frequency bands. The radio communication apparatus includes a control unit and a transmission unit. The control unit selects a second frequency band different from a first frequency band as a frequency band used for data communication through the other radio communication apparatus. The transmission unit transmits a control message including identification information indicating the second frequency band selected by the control unit to the other radio communication apparatus using the first frequency band during the random access procedure.

To solve the problem described above, a system is provided for conducting communications using a plurality of frequency bands. The radio communication system includes first and second radio communication apparatus. The first radio communication apparatus transmits using a first frequency band a control message including identification information indicating a second frequency band different from the first frequency band during a random access procedure. The second radio communication apparatus receives the control message from the first radio communication apparatus using the first frequency band and performs data communication using the second frequency band indicated by the identification information included in the control message. .

To solve the problem described above, we provide

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V &lt;/ &lt;'; and «' k: '- 2' ΊΤ ·; ; 'O ¡ÁNCANO DE LA rr.O?: EDAO

I? í L · · US Ϊ R i?. L a radio communication method for use in a radio communication system including first and second radio communication apparatus for performing communication using a plurality of frequency bands. In this radio communication method, the first radio communication apparatus transmits using a first frequency band a control message including identification information indicating a second frequency band different from the first frequency band to the second communication apparatus by radio during a random access procedure through the second radio communication apparatus. The second radio communication apparatus receives the control message from the first radio communication apparatus using the first frequency band and performs data communication using the second frequency band indicated by the identification information included in the control message. .

Advantageous effects of the invention

In accordance with the radio communication apparatus described above, the radio communication system and the radio communication method, the use of control of a plurality of frequency bands is effectively performed.

The above-mentioned objects, features, advantages and others of the present invention will become apparent from the following detailed description of the presently preferred embodiment of the

TO

INDUSTRIAL invention, taken in conjunction with the accompanying drawings.

BRIEF DESCRIPTION OF THE DRAWINGS

Figure 1 illustrates a radio communication system according to a first embodiment.

Figure 2 illustrates a mobile communication system according to a second embodiment.

Figure 3 is a sequence diagram illustrating a contention-based random access procedure.

Figure 4 is a sequence diagram illustrating a non-contention based random access procedure.

Figure 5 illustrates a component carrier on which radio communication is performed.

Figure 6 is a block diagram illustrating a base station.

Figure 7 is a block diagram illustrating a mobile station.

Fig. 8 is a flow diagram illustrating a procedure 20 of a base station according to a second embodiment.

Fig. 9 is a flow diagram illustrating a procedure of a mobile station according to a second embodiment.

Figure 10 illustrates a first example of random access according to a second embodiment.

(NSTITUTO MEXICANO DE LA FRu / UPAD INDUSTRIAL

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Figure 11 illustrates a second example of random access in accordance with a second embodiment.

Figure 12 illustrates a third example of random access according to a second embodiment.

Figure 13 illustrates a first example format of a MsgO.

Figure 14 illustrates a second example format of a MsgO. Figure 15 illustrates a third example format of a MsgO.

Figure 16 illustrates a first example of adjusting the size of a

MsgO.

Figure 17 illustrates a second example of size adjustment of a MsgO.

Figure 18 illustrates a third example of size adjustment of a

MsgO.

Figure 19 is a flowchart illustrating a base station procedure according to a third embodiment.

Fig. 20 is a flow diagram illustrating a procedure of a mobile station according to a third embodiment.

Figure 21 illustrates a first example of random access according to a third embodiment.

Figure 22 illustrates a second example of random access according to a third embodiment.

Figure 23 illustrates a third example of random access of

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according to a third modality.

Figure 24 illustrates a first example format of a \ 7Tsg2.

Figure 25 illustrates a second example format of a Msg2. Figure 26 illustrates a third example format of a Msg2.

Fig. 27 is a flow diagram illustrating a procedure of a base station according to a fourth embodiment.

Fig. 28 is a flowchart illustrating a procedure of a mobile station according to a fourth embodiment.

Figure 29 illustrates a first example of random access according to a fourth embodiment.

Figure 30 illustrates a second example of random access according to a fourth embodiment.

Figure 31 illustrates a third example of random access according to a fourth embodiment.

List of Reference Signs

<td></td><td> 1,2</td><td>Radio communication apparatus</td>

<td></td><td>1a, 2b</td><td>Control unit</td>

<td></td><td>1 B</td><td>Drive unit</td>

<td> 20</td><td>2nd</td><td>Receiving unit</td>

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MEXICAN INSTITUTE OF INDUSTRIAL PROPERTY

DETAILED DESCRIPTION OF THE INVENTION

Preferred embodiments of the present invention will now be described in detail below with reference to the accompanying drawings, where like reference numerals refer to like elements therein.

First modality

Figure 1 illustrates a radio communication system according to a first embodiment. The radio communication system according to the first embodiment includes communication apparatus 1 and 2. Radio communication apparatus 1 and 2 carry out communication using a plurality of frequency bands. Said radio communication system is implemented, for example, as an LTE-A system. In the LTE-A system, the plurality of frequency bands can each be referred to as a CC (component carrier).

The radio communication apparatus 1 performs the allocation control of the radio resources. Under the control of the radio communication apparatus 1, the radio communication apparatus 2 performs data communication between the radio communication apparatus 1 (or, another radio communication apparatus) and its own apparatus. For example, the radio communication apparatus 1 is implemented as a station

MEXICAN INSTITUTE OF PROPERTY

INDUSTRIAL base or a relay station, and the radio communication apparatus 2 is implemented as a subscriber station. Or, alternatively, the radio communication apparatus 1 can be implemented as a base station, and the radio communication apparatus 2 can be implemented as a relay station. The radio communication apparatus 1 and 2 can be a fixed radio communication apparatus or a mobile radio communication apparatus.

The radio communication apparatus 1 has a control unit 1a and a transmission unit 1b. Control unit 1a establishes a frequency band # 1, such as a frequency band used for a random access procedure through radio communication apparatus 2. Control unit 1a additionally selects a frequency band # 2, such as a frequency band used for data communication through radio communication apparatus 2. Transmission unit 1b transmits a control message relating to random access to radio communication apparatus 2 using frequency band # 1. In this control message, the Identification information indicating the frequency band # 2 is inserted. The Identification Information (eg, a unique number) is pre-matched with the plurality of the frequency bands, respectively.

The radio communication apparatus 2 has a receiving unit 2a and a control unit 2b. The receiving unit 2a receives the control message related to the random access of the

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Radio communication 1 using the frequency band #Y: L'audityof 'control 2b confirms the Identification Information included in the received control message and controls the radio communication apparatus 2 to perform data communication using the band Frequency # 2 indicated by identifying information. Examples of the random access target and data communication partner of radio communication apparatus 1 include radio communication apparatus 1. It should be noted that in the case of a handover from the radio communication apparatus 1 to the other radio communication apparatus, the random access target and the data communication partner is a radio communication apparatus as a handover target.

As described above, like random access, the radio communication apparatus 2 performs non-contention based random access or contention based random access. In the case of non-contention-based random access 15, for example, a message (MsgO) to specify a signal sequence from a random access preamble or a random access response (Msg2) as a response to the random access preamble (Msg1) is considered to be used as the control message. In the case of contention-based random access, the random access response is considered to be used as the control message.

When the control message including the identification information is received using frequency band # 1, the device ί Μ

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For radio communication 2, a subsequent random procedure can be continued using random frequency using frequency band # 2. In the case where frequency band # 2 is in a deactivated state, at the time it receives the control message including the identification information, the radio communication apparatus 2 can change a state of the frequency band # 2 in an active state. On the other hand, at the moment it receives the control message including the identification information, the radio communication apparatus 1 can change a state of frequency band # 2 in an active state. In this case, the radio communication apparatus 1 and 2 need not separately transmit and receive the control message to change a state of frequency band # 2 to an active state.

In the radio communication system described above, radio communication apparatus 1 selects frequency band # 2 as a frequency band used for data communication through radio communication apparatus 2. At the time of performing the random access procedure, using frequency band # 1, the radio communication apparatus 1 transmits the control message that includes the identification information indicating the frequency band # 2 to the communication apparatus by radio 2. On the other hand, at the time of carrying out the random access procedure, using frequency band # 1, the radio communication apparatus 2 receives the control message that includes the identification information indicating the band of

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frequency # 2 communication using identification.

from radio communication device TrET ”ápafaTÓ'dé by radio 1, then it performs data communication frequency band # 2 indicated by the information of

This procedure allows the radio communication device 1 to provide a permission for the use of frequency band # 2 different from the frequency band # 1 used at the time of starting the random access procedure 3 for the radio communication device 2 during the random access procedure. That is, the radio communication apparatus 1 implements cross-carrier programming during the random access procedure. Accordingly, after the random access procedure, the radio communication apparatus 1 need not separately carry out a procedure to provide permission for the use of frequency band # 2 to the radio communication apparatus

2, and effectively controls the use of the plurality of frequency bands.

From the second to the fourth modalities, a case in which the radio communication method according to the first modality is applied to an LTE-A mobile communication system is further described in detail. It should be noted that the communication method By radio according to the first modality it can be applied to the mobile communication system using a communication method different from LTE-A or the fixed radio communication system.

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Second modality - ^ ¡λ :.

Figure 2 illustrates a mobile communication system according to a second embodiment. The mobile communication system according to the second embodiment includes a base station 10, a mobile station 5 20, and a relay station 30. This mobile communication system allows radio communication using up to five component carriers.

Base station 10 is a radio communication apparatus that communicates directly with mobile station 20 or via relay station 30. Base station 10 is connected to a host station (not shown) via cable, and transfers user data between a wired section and a radio section. Base station 10 manages the radio resources of a link between base station 10 and mobile station 20, and the additional radio resources of a link between base station 10 and relay station 30.

Mobile station 20 is a radio terminal device, which has access to base station 10 or relay station 30 and performs radio communication. As the mobile station 20, for example, a mobile telephone apparatus device or portable information terminal device is used. Mobile station 20 performs random access and establishes synchronization with base station 10 or relay station

30, and then transmits and receives data.

Relay station 30 communication device by

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i

INSTITUTO MEXICANO D¿ LA rHOí'itOA.D INDUSTRIAL radio, which relays the data transmission between base station 10 and mobile station 20. Relay station 30 can be a fixed communication device or a mobile communication device. Relay station 30 can perform random access with base station 10 and synchronize with it. Furthermore, the relay station manages the radio resources of a link between relay station 30 and mobile station 20.

In the following description of the second embodiment, the random access procedure performed between base station 10 and mobile station 20 will be described. Even between base station 10 and relay station 30, as well as between relay station 30 and mobile station 20, the same random access procedure is performed.

Figure 3 is a sequence diagram illustrating the contention based random access procedure. The next section 15 will now raise the case where the random access procedure is performed only on a component bearer. The sequence illustrated in Figure 3 includes the following steps:

(Step S11) When the data to be transmitted on a UL (uplink) is generated, the mobile station 20 selects an arbitrary signal sequence from among a plurality of previously defined signal sequences. Mobile station 20 then transmits a random access preamble (Msg1) that includes the selected signal sequence to base station 10, using a PRACH (Physical Random Access Channel).

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At this time, in the PRACH, a plurality of stations move ^ 'p'üeae'ft transmit Msg1 of the same signal sequence, particularly, contention of random access may be caused.

(Step S12) When Msg1 is detected on the PRACH, the base station 10 measures the UL transmission timing of the mobile station 20, and at the same time assigns a UL radio resource to the mobile station 20.

The base station 10 then transmits the random access response (Msg2) which includes information for the timing of the UL timing or the information indicating the assigned UL radio resource. In the case where the contention of the random access is produced, the mobile stations that transmit the Msg1 receive the Msg2, respectively.

(Step S13) When the Msg2 is received, the mobile station 20 transmits a scheduled transmission (Msg3) that includes the Identification Information from the mobile station 20 to the base station 10 using the radio resources allocated UL by the base station 10. In the case where the contention of the random access is produced, the mobile stations that transmit the Msg1 (particularly, receive the Msg2) transmit an Msg3, respectively. In this case, a plurality of the transmitted Msg3s interfere with each other on the same radio resource.

(Step S14) Base station 10 detects Msg3 on the radio resource UL assigned in step S12. Based on the Identification Information included in the Msg3, the base station 10 recognizes the mobile station 20, which performs the random access. As a result, the base station transmits a containment resolution (Msg4) indicating that the station

<img file="MX337699B_D0025.tif" />

Mobile 20 is recognized for mobile station 20. Mobile station 20 then establishes synchronization between base station 10 and its own station, and enables data communication.

It should be noted that, in the case where the contention of the random access is produced, the identification information of the mobile station as a transmission source fails to be extracted from the Msg3. In this case, base station 10 transmits a message indicating that random access contention is occurring. After waiting only for the random time, the mobile station 20, which receives the message, returns to step S11 and performs the random access procedure again. When contention is removed, mobile station 20 establishes synchronization between base station 10 and its own station, and allows data communication.

Figure 4 is a sequence diagram illustrating the non-contention based random access procedure. The next section will now raise the case where the random access procedure is performed only on a component bearer. The sequence illustrated in Figure 4 includes the following steps:

(Step S21) When the data transmitted on the downlink (DL) reaches the base station 10, the base station 10 selects an unused signal sequence from among a plurality of previously defined signal sequences. Base station 10 transmits

-INSTITUTE ί · '· ϊ>^{; ; CAf}.^,2 THE PROMiiOAD

INDUSTRIAL then Dedicated Preamble Notification (MsgO) to specify Ja ,, selected signal sequence to mobile station 20. At this time, base station 10 performs exclusion control to a plurality of mobile stations so that it does not assign the same signal sequence at the same time.

(Step S22) Within the specified period (validity period) from the reception of the MsgO, the mobile station 20 transmits the Msg1 which includes the signal sequence specified by the MsgO to the base station 10 using the PRACH. Here, because the exclusively specified signal sequence is assigned to mobile stations 20 within the validity period, contention of random access does not occur.

(Step S23) When Msg1 is detected on the PRACH, base station 10 allocates the UL radio resource to mobile stations 20. Base station 10 then transmits Msg2 which includes information indicating the UL radio resources assigned to the mobile station 20. Data communication is then enabled between base station 10 and mobile station 20. Because contention of random access is not produced, base station 10 need not transmit and receive Msg3 and Msg4 in noncontainment based random access.

Contention-based random access is performed, for example, at the time when (1) mobile station 20 first accesses base station 10, and at the time (2) base station 20 requests resource allocation radio to base station 10. Random access

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INDUSTRIAL based on non-containment is performed, for example, (3) when data is received from base station 10, at the moment when mobile station 20 establishes synchronization with base station 10, and (4) when performs handover to base station 10 from another base station, at the time that mobile station 20 establishes synchronization with base station 10.

It should be noted that when non-contention based random access is to be performed (for example, at the time of establishing synchronization during handover or when mobile station 20 receives data from base station 10) in the case where the separately assigned signal sequence is output at base station 10, the MsgO is transmitted and received which does not include the dedicated preamble. In this case, contention-based random access is performed. In the case of handover, base station 10 before handover transmits the MsgO to mobile station 20. According to the second embodiment, base station 10 and mobile station

twenty it is supposed to perform the non-contention based random access procedure.

Figure 5 illustrates a component carrier on which radio communication is performed. As described above, base station 10 and mobile station 20 use a maximum of five component carriers (CC # 1 to # 5), thereby performing radio communication. All bandwidths of CC # 1 to # 5 can be the same as the others or different from each other.

For CC # 1 to # 5, a 3-bit Cl (Bearer Indicator) is y

provided as identification information, respectively. Agu¿_KJ3bjXQX (Q.) - -.........

indicates CC # 1, 0b001 (1) indicates CC # 2, 0b010 (2) indicates CC # 3, 0b011 (3) indicates CC # 4, and 0b100 (4) indicates CC # 5. Here 0b101 (5) and 0b110 (6) are unused values ​​(reserve values) As described below,

Ob 111 (7) can be used to indicate its own component carrier.

Base station 10 sets its states from CC # 1 to # 5 on each mobile station. Based on states of CC # 1 through # 5, mobile station 20 controls the radio reception processing of each component bearer. Based on their states, for example, CC # 1 to # 5 are classified into CC configured but deactivated CC configured and enabled and PDCCH monitoring setting.

The configured although deactivated CC is a component bearer in which data communication is not actually performed and which is a usable state (deactivated state). In the component bearer in a deactivated state, station 20 need not monitor any of a PDCCH (Physical Downlink Control Channel) in which the control data is transmitted and a PDSCH (Physical Downlink Shared Channel) in which a data signal is transmitted. In particular, mobile station 20 can stop radio reception processing of the frequency band.

The configured and activated CC is a component bearer (in an active state) in which data communication is currently performed. Using the component carrier in an active state, the

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mobile station 20 performs at least the process of receiving receivership related to the PDSCH to mobile station 20.

The PDCCH monitoring setting is in an active state and a setting of the component carriers in which the PDCCH for the mobile station 20 can be set. The mobile station 20 monitors the PDCCH using the component carriers included in this setting. In the case where a PDCCH signal length is not constant, the mobile station 20 blindly decodes the PDCCH. Specifically, mobile station 20 attempts a plurality of decodes according to an available signal length, thereby extracting the control data. It should be noted that the PDCCH monitoring setting is defined as a subgroup of the configured and activated CCs and the PDCCH reception processing that is sought to be performed on all the configured and activated CCs in some cases. In this case, the PDCCH monitoring setting and the configured and activated CC mean the same setting.

In addition, a component carrier in which the

PDCCH may be different at each mobile station. Mobile station 10 can be set as part of CC # 1 to # 5, as an ACC (anchor-component carrier). The CC is a component bearer to be monitored by the mobile station. In the case where ACC is adjusted, ACC is

Included at least in the PDCCH monitoring setting. A component bearer setting such as ACC can be specified in each cell, or in each mobile station.

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In order to carry out two-way communication, the radio station AO'y '· the mobile station 20 can use TDD (double time division) or FDD (double frequency division). In the case where the TDD is used, a frequency band is adjusted for each CC. In the case where the FDD is used, a pair of a frequency band for the UL and a frequency band for the DL is adjusted for each CC. With respect to the aforementioned random access procedure, any case can be performed where a frequency band is divided into the frequency band for the UL and the frequency band for the DL and the case where a frequency band is not divided into the frequency band for the UL and the frequency band for the DL.

Figure 6 is a block diagram illustrating a base station. Base station 10 has a radio communication unit 11, a programmer 12, a wired communication unit 13, a control unit 14, a control plane unit 15, a PDCCH control unit 16, a radio plan unit data 17, and a RAR control unit 18.

Radio communication unit 11 is a radio interface which performs radio communication with mobile station 20 and relay station 30. Radio communication unit 11 subjects a radio signal received from mobile station 20 or the relay station to signal processing including demodulation and decoding, and extracts user data and control data. Furthermore, the radio communication unit 11 submits the user data and the control data

<img file="MX337699B_D0029.tif" />

to be transmitted to mobile station 20 or relay station 30 for signal processing, which includes modulation and coding for radio transmission.

In accordance with the Instruction of the control unit 14, the programmer 12 performs the assignment (programming of the radio resources for the mobile station 20 and the relay station 30. During the random access procedure, for example, the programmer 12 it allocates the UL radio resources to the mobile station 20, and notifies the radio communication unit 11 of the assigned UL radio resource.

Wired communication unit 13 is a communication interface, which performs wired communication with a host station. Wired communication unit 13 receives user data for mobile station 20 from the host station. Under programming through programmer 12, the received user data is transferred to mobile station 20. The wired communication unit 13 additionally transfers the user data extracted by the radio communication unit 11 to the host station.

The control unit 14, controls the procedures of the radio communication unit 11, the programmer 12 and the wired communication unit 13. Within the control unit 14, the control plane unit 15 and the control unit are provided. data plane 17. Inside the control piano unit 15, the PDCCH 16 control unit is provided. Inside the control plane unit 17, the RAR 18 control unit is provided.

<img file="MX337699B_D0030.tif" />

• Νδτπυτο? /Rxif.AN ME LA f KÜ? ¡E¡-> A1>

The control plane unit 15 controls the transmission and reception of the control data between the mobile station 20, ^ 'όΜβοίόη'Ήβ relay 30, and its own station. Specifically, the control plane unit 15 acquires the control data extracted by the radio communication unit 11 and performs the communication control according to the control data. The control plane unit 15 additionally notifies the radio communication unit 11 of the control data to be transmitted to the mobile station 20 or the relay station 30.

For example, the control plane unit 15 performs a procedure of a RRC (Radio Resource Control Protocol).

PDCCH control unit 16 controls PDCCH signaling during the random access procedure. Specifically, the PDCCH control unit 16 determines what information is included in the dedicated preamble notification (MsgO) to be transmitted to mobile station 20 or relay station 30 using the PDCCH. For example, the PDCCH control unit 16 may insert into the MsgO a Cl of the component bearer in which the data communication takes place.

The data plane unit 17 controls the transmission and reception of user data between mobile station 20, relay station 30, and its own station. For example, data plane unit 17 performs the procedures of a PDCP (packet data convergence protocol), an RLC protocol (radio link control), and a MAC protocol (Media Access Control).

INSTITUTO MEXICANO ni IA PROFIF.nAlT

<img file="MX337699B_D0031.tif" />

The RAR control unit 18 controls the JMAC_ signaling during the random access procedure. Specifically, the RAR control unit 18 determines what information is included in the random access response (Msg2) to be transmitted to the mobile station 20 or the relay station 30 using the PDSCH. For example, the RAR control unit 18 may insert into the Msg2 a Cl of the component bearer in which the data communication takes place.

Figure 7 is a block diagram illustrating the mobile station. Mobile station 20 has a radio communication unit 21, a cross carrier setting unit 22, a control unit 23, a control plane unit 24, a PDCCH control unit 25, a data plane unit 26 , and a RAR 27 control unit.

Radio communication unit 21 is a radio interface which performs radio communication with base station 10 and relay station 30. Radio communication unit 21 submits a radio signal received from base station 10 or the relay station to signal processing including demodulation and decoding, and extracts user data and control data. Furthermore, the radio communication unit 21 subjects the user data and the control data to be transmitted to the base station 10 or the relay station 30 to signal processing, which includes modulation and coding for the radio transmission.

According to the instruction of the control unit 23, the

<img file="MX337699B_D0032.tif" />

V!, Sy 'Κί' ϋ J jj $ jL At instiTMT '>^M 2 cross carrier adjusting unit 22 performs adjustment of a frequency band (component carrier), in which the radio communication unit 21 performs signal processing during the random access procedure. In the case where a Cl is included in the received MsgO or Msg2, for example, the cross carrier adjustment unit 22 then adjusts the frequency band so that it performs data communication using the component carrier indicated by the Cl In the second modality, the Cl is supposed to be inserted into the MsgO.

The control unit 23, controls the procedures of the radio communication unit 21, and the cross carrier adjusting unit 22. Within the control unit 23, the control plane unit 24 and the plane unit are provided. Data 26. Within the control plane unit 24, the PDCCH control unit 25 is provided. Within the control plane unit 26, the RAR control unit 27 is provided.

Control plane unit 24 controls the transmission and reception of control data between base station 10, relay station 30, and its own station. Specifically, the control plane unit 24 acquires the control data extracted by the radio communication unit 21 and performs the communication control according to the control data. Control plane unit 24 additionally notifies radio communication unit 21 of control data to be transmitted to base station 10 or relay station 30.

For example, the control plane unit 24 performs a procedure of a

<img file="MX337699B_D0033.tif" />

RRC.

The PDCCH control unit 25 controls the PDCCH signaling during the random access procedure. Specifically, the PDCCH control unit 25 analyzes the MsgO to be received through the PDCCH from the base station 10 or the relay station 30, and performs a procedure based on the information included in the MsgO. In the case where the Cl is inserted into the MsgO, for example, the PDCCH control unit 25 performs the receive processing of the PDSCH using the component bearer indicated by the Cl. At the start of the receive processing, the activation of the bearer Component and buffer allocation, which stores received user data, may be included.

The data plane unit 26 controls the transmission and reception of user data between base station 10, relay station 30, and its own station. For example, data plane unit 26 performs PDCH, RLC, and MAC procedures.

The RAR control unit 27 controls the MAC signaling during the random access procedure. Specifically, the RAR control unit 27 analyzes the Msg2 to be received through the PDSCH from the base station 10 or the relay station 30, and performs a procedure based on the information included in the Msg2. In the case where the Cl is inserted into the Msg2, for example, the PDSCH receive processing is performed by the component bearer indicated by the Cl.

<img file="MX337699B_D0034.tif" />

MEXICAN INSTITUTE CE THE PROPERTY

INDUSTRIAL

Also in the relay station 30, w ^ -t / radio communication unit and a control unit can be provided in the same way as in the base station 10 and the mobile station 20. In that case, with respect to communication By radio between base station 10 and its own station, the control unit of relay station 30 performs the same procedure as that of control unit 23 of mobile station 20. With respect to controlling radio communication between mobile station 20 and its own station, the control unit of relay station 30 additionally performs the same procedure as that of control unit 14 of base station 10.

Fig. 8 is a flow chart illustrating a base station procedure according to the second embodiment. The procedure illustrated in Figure 8 includes the following steps:

(Step S111) The control unit 14 sets the states of 15 CC # 1 to # 5 with respect to the mobile station. Specifically, the control unit 14 identifies the protocols described above CC configured but deactivated, CC configured and activated and monitoring setting

PDCCH.

(Step S112) The control unit 14 determines whether to implement the cross carrier programming. Specifically, control unit 14 determines whether to perform data communication except for the component bearer on which the dedicated preamble notification (MsgO) is transmitted. Control unit 14 determines whether to implement the "· · './f ICUAU

ÍNOUSTJUA1 programming of the cross carrier, for example, οοηΊΤΤΊ ...... thousand, π11, iPiu.

of the data to be transmitted to the mobile station 20 and the communication quality of the component bearer, in which the MsgO is transmitted. If not, the procedure advances to step S113. If so, the procedure proceeds to step S114.

(Step S113) The PDCCH 16 control unit sets 0b111 in a Cl (CIF) field included in the MsgO. This binary digit stream represents that data communication is performed by the component bearer on which the MsgO is transmitted. Instead of 0b111, the PDCCH 16 control unit can adjust the 3-bit Cl, which indicates the component bearer on which the MsgO is transmitted. The procedure then proceeds to step S116.

(Step S114) From CC # 1 to # 5, control unit 14 selects one or a plurality of component carriers on which data communication is performed except for the component carrier on which the MsgO is transmitted . Control unit 14 selects the component bearer, for example, based on a size of the data to be transmitted to mobile station 20 or the communication quality from CC # 1 to # 5.

(Step S115) The PDCCH 16 control unit sets a 3-bit CIF indicating the component bearer selected in step S114 in a CIF included in the MsgO. The PDCCH control unit 16 transmits the MsgO for each component carrier selected in step S114.

<img file="MX337699B_D0035.tif" />

Ά ΓίΓ

1% / a (Step S116) The radio communication unit 11 transmits the MsgO including the CIF setting in step S113 or S115 to the mobile station 20 using the component carrier included in the PDCCH monitoring setting. In the case where the plurality of component carriers are selected in step S114, the radio communication unit 11 transmits a plurality of MsgO settings. The plurality of the MsgO sets that it can be transmitted by the same radio transmission unit (for example, the same sub-frame), or is scattered in different radio transmission units (for example, different sub-frames) for its transmission.

(Step S117) In the case where the component carrier notified by the MsgO is set as the configured although disabled CC (disabled state), the control unit 14 changes this to the configured and enabled CC (active state). The radio communication unit 11 receives the random access preamble (Msg1) from the mobile station 20 using the component bearer notified by the MsgO.

(Step S118) The RAR control unit 18 generates the random access response (Msg2) that does not include the CIF. Radio communication unit 11 transmits Msg2 to mobile station 20 using the component bearer on which Msg1 is received. Then, data communication is performed by the component bearer in which Msg1 and Msg2 are transmitted and received.

Fig. 9 is a flow diagram illustrating a procedure of the mobile station according to the second embodiment. The procedure

<img file="MX337699B_D0036.tif" />

Illustrated in Figure 9, it includes the following steps: ________ (Step S121) Control unit 23 adjusts the states of CC # 1 to # 5. Specifically, the control unit 23 identifies the configured but disabled DC, configured and enabled DC protocols and PDCCH monitoring setting. The radio communication unit 21 monitors the PDCCH of the component carrier included in the monitoring setting

PDCCH.

(Step S122) The radio communication unit 21 transmits the MsgO to the mobile station 10 using the component carrier included in the PDCCH monitoring setting. The PDCCH 25 control unit extracts the CIF included in the MsgO. In the case where the plurality of the MsgO settings are received, the PDCCH control unit 25 extracts the CIF at each MsgO.

(Step S123) The PDCCH control unit 25 identifies the component bearer indicated by the CIF extracted in step S122, and performs the receive processing of the PDSCH using the previous component bearer. In the case where the component carrier indicated by the CIF is set as CC configured but disabled, the PDCCH 25 control unit changes it to CC configured and enabled. The cross carrier adjusting unit 22 adjusts a frequency band to perform signal processing.

(Step S124) The radio communication unit 21 transmits the Msg1 using a signal sequence specified by the MsgO to the base station 10 through the PRACH of the component carrier indicated ρ ,, ί by the CIF. In the case where the plurality of the M¿gO settings^> are received and the plurality of the component carriers are deified in step S123, the radio communication unit 21 transmits the Msg1 for each identified component carrier. The radio communication unit 21 can transmit a plurality of the settings Msg1 at the same timing or at a different timing.

(Step S125) The radio communication unit 21 receives the Msg2 from the base station 10 using the component bearer on which the Msg1 is transmitted. The RAR control unit 27 performs a procedure based on the information included in the Msg2. Data communication unit 21 performs data communication using the component bearer in which Msg1 and Msg2 are transmitted and received.

Figure 10 illustrates a first example of random access according to the second embodiment. Mobile station 20 is assumed to set CC # 1 and # 2 as the configured and enabled CC and CC # 3 to # 5 as the configured but disabled CC. It is further assumed that the PDCCH monitoring setting includes only CC # 1.

(Step S131) ​​Base station 10 transmits MsgO Including 20 CIF = 0b001 to mobile station 20 using CC # 1 set as the PDCCH monitoring setting.

(Step S132) Mobile station 20 transmits Msg1 to base station 10 using CC # 2 indicated by CIF = 0b001. Because CC # 2

<img file="MX337699B_D0037.tif" />

is set as the configured and activated DC, the station^J'fíi © yitJ ^, you need to change a state of CC # 2.

(Step S133) Base station 10 transmits Msg2 to mobile station 20 using CC # 2 on which Msg1 is received. For example, mobile station 20 then transmits the data to base station 10 using CC # 2.

The transmission characteristics of radio signals are different in each component carrier (in each frequency band). Accordingly, when Msg1 and Msg2 are transmitted and received by the component bearer on which the data communication is performed, the stabilization of the data communication is effectively achieved. Furthermore, to facilitate the explanation in Figure 10, only CC # 1 is set as the PDCCH monitoring setting and no additional CC can be adjusted as the PDCCH monitoring setting as well. In this case, the

MsgO is transmitted by the CC setting as the PDCCH monitoring setting

Figure 11 illustrates a second example of random access according to the second embodiment. The states from CC # 1 to # 5 at the time of starting the random access procedure are the same as those in figure 10.

(Step S141) Base station 10 transmits the MsgO that includes

CIF = 0b010 to mobile station 20 using CC # 1 set as the PDCCH monitoring setting. Because CC # 3 indicated by CIF = 0b010 is set as the configured CC but disabled, it is activated and changed in the configured and activated CC.

(Step S142) Mobile station 20 transmits Msg1 to base station 10 using CC # 3 indicated by CIF = 0b010. At this point, in the same way as in base station 10, mobile station 20 activates the

CC # 3 and change it in the configured and activated CC (Step S143) The base station 10 transmits the Msg2 to the mobile station 20 using the CC # 3 in which the Msg1 is received. For example, mobile station 20 then transmits the data to base station 10 using CC # 3.

While performing a procedure for transmitting and receiving MsgO and Msg1, base station 10 and mobile station 20 change a state of CC # 3. Specifically, the MsgO and Msg1 are duplicated as signaling to change a state of CC # 3. Accordingly, base station 10 and mobile station 20 need not separately perform signaling to change a state of CC # 3.

Figure 12 illustrates a third example of random access according to the second embodiment. The states from CC # 1 to # 5 at the time of starting the random access procedure are the same as those in figure 10.

(Step S151) Base station 10 transmits the MsgO including CIF = 0b001 to mobile station 20 using CC # 1 set as the PDCCH monitoring setting.

(Step S152) Base station 10 transmits the MsgO including the CIF = ObO1O to mobile station 20 using CC # 1. Because CC # 3 indicated by CIF = 0b010 is set as the configured CC although disabled, base station 10 activates CC # 3 and changes it to the configured and activated CC. Base station 10 can additionally transmit two MsgO settings on the same stopwatch.

(Step S153) Mobile station 20 transmits Msg1 to base station 10 using CC # 2 indicated by CIF = 0b001.

(Step S154) Mobile station 20 transmits Msg1 to base station 10 using CC # 3 indicated by CIF = 0b010. At this point, in the same way as in base station 10, mobile station 20 activates CC # 3 and changes it in configured and activated CC. Mobile station 20 can additionally transmit two Msg1 settings on the same timer.

(Step S155) Using CC # 2, base station 10 receives Msg1 and transmits Msg2 to mobile station 20. Using CC # 2, for example, mobile station 20 then transmits the data to the base station

10.

(Step S156) Using CC # 3, base station 10 receives Msg1 and transmits Msg2 to mobile station 20. Using CC # 3, for example, mobile station 20 then transmits the data to the base station

10.

The signal sequence specified by the MsgO transmitted in step S151 and the signal sequence specified by the MsgO transmitted in step S152 may be the same or may be different from each other. Of the. > / i- -ί- «'· NSTIi'VTO MEXICANO ... DELA PROPERTY

D £ THE PROPERTY specifies, with respect to the Msg1 transmitted in step STS ^^ 'the Msg1 transmitted in step S154, the mobile station 20 may' Wtizár'Ta same signal sequence or a different signal sequence.

In the above described example of cross carrier programming, base station 10 is assumed to recognize states of CC # 1 through # 5 of mobile station 20. In the case where base station or mobile station 20 has a For the reason that some of the component bearers between CC # 1 to # 5 cannot be used, base station 10 excludes said component bearer and selects the component bearer on which data communication is performed. The cross-carrier scheduling described above is implemented, for example, at the time that mobile station 20 performs random access with base station 10 from a state of connected mode or Idle mode.

Figure 13 illustrates a first example format of the MsgO. The

MsgO is a control message to be transmitted through the PDCCH. As a field, the MsgO includes Flag, Local / Dist, Resource Block Allocation, Preamble Index, PRACH Mask Index, Bearer Indicator, and CRC. A bit length of a resource block allocation field is different, depending on a component bearer DL bandwidth. Figure 13 illustrates a bandwidth using the number of RBs (resource blocks). At this point, 100 RBs are equal to a width of

MHz.

...and

The fields except the carrier indicator field are

V.

described, for example, in Evolved Universal Terrestrlal Radio Access

UTRA); Multiplexlng and channel coding (3GPP, s 36.212 V9.0.0, 2009-12).

In the second mode, the Flag is set to 1, the Local / Dist is set to 0, and all resource block allocation settings are set to 1.

When a fixed bit is inserted to extend the MsgO, the accuracy of error detection is improved. The preamble index indicates the information to specify the signal sequence used for Msg1. The PRACH mask index indicates the information used to transmit the Msg1. The CRC indicates a parity used for MsgO error detection.

As described above, the Bearer Indicator indicates a 3-bit binary bit stream to specify the component bearer on which data transmission is performed. In an example of Figure 13, the Component Indicator field is inserted between the PRACH mask index field and the CRC field. In the literatures described above, Evolved universal terrestrial radio access (E-UTRA); and multiplexing and channel coding, a format was described over which the padding field is provided between the PRACH mask index field and the CRC field.

Figure 14 illustrates a second example format of a MsgO.

In the example format of Figure 14, the most significant 3 bits of the bit stream bit assigned to the resource block allocation field in the example format of Figure 13 is assigned to the Bearer Indicator field. Specifically, the inuu $ í? Ja ^ »bearer indicator field is inserted between the Local / Dist field and the resource block allocation-field. The padding field is provided between the PRACH mask index field and the CRC field. All settings are fixed at 1.

Figure 15 illustrates a third example format of the MsgO. In the example format of Figure 15, the least significant 3 bits of the binary bit stream assigned to the resource block allocation field in the example format of Figure 13 are assigned to the bearer indicator field. Specifically, the bearer indicator field was inserted between the resource block allocation field and the preamble index field.

In addition to the example formats of Figures 14 and 15, a method was also considered in which the 3 intermediate meaning bits of the binary digit stream assigned to the resource block allocation field of the example format of Figure 13 , is assigned to the carrier indicator field.

Incidentally, in the example format, a MsgO data length is different depending on the DL bandwidth of the component bearer. Accordingly, a plurality of MsgO settings having different data lengths can be transmitted via CC # 1.

Assuming, for example, that a DL bandwidth of CC # 2 is 20 MHz and a DL bandwidth of CC # 3 is 10 MHz. In this case, the MsgO that corresponds to CC # 2 and the MsgO that corresponds to CC # 3 have different data lengths.

- · - - ·· '............ -', ΝΪΠ'Λ'ΤΟ VfXICANO ££ LA? «ΟΡΙ £ ΟΛΕ>

MD 'JSTR.I AL

On the other hand, mobile station 20 performs blind decoding .................

from the PDCCH and extract the MsgO. Accordingly, to reduce a cost of blind decoding operation, mobile station 20 preferably adjusts a size such that a size of MsgO can be constant even if the DL bandwidth is different depending on the component carrier. Additionally, to facilitate the extraction of the CIF, the mobile station 20 preferably makes constant a position of the CIF in the complete MsgO.

Figure 16 illustrates a first example of adjusting the size of the

MsgO. The size adjustment example in figure 16 corresponds to the example format illustrated in figure 13. In this size adjustment example, the FILL field having a length according to the DL bandwidth is inserted between the resource block allocation field and the preamble index field. Throughout the procedure, a size of

MsgO becomes constant without relation to DL bandwidth. Because a CIF position is constant, after MsgO decoding, the CIF is easily extracted to identify the component carrier to be used. Additionally, because the positions of the preamble index field and the PRACH mask index field are constant, Msg1 is easily generated by referencing the above fields.

Figure 17 illustrates a second example of size adjustment of a MsgO. The size adjustment example in figure 17 corresponds to the example format illustrated in figure 14. In the same way as in the

<img file="MX337699B_D0038.tif" />

<img file="MX337699B_D0039.tif" />

[ί

PÍ LA ί

Example of size adjustment in Figure 16, the FILL field that contains a length according to the DL bandwidth is inserted between the resource block allocation field and the preamble index field. Throughout the procedure, a MsgO size becomes constant, and at the same time a CIF position becomes constant with no relation to DL bandwidth. The positions of the preamble index field and the PRACH mask index field also become constant.

Figure 18 illustrates a third example of size adjustment of a MsgO. The size adjustment example in figure 18 corresponds to the example format illustrated in figure 15. In this size adjustment example, the FILL field having a length according to the DL bandwidth is inserted between the Local / Dist field and resource block allocation field. Throughout the procedure, a MsgO size becomes constant, and at the same time a CIF position becomes constant with no relation to DL bandwidth. The positions of the preamble index field and the PRACH mask index field also become constant.

According to this second mode mobile communication system, transmitting the MsgO to the mobile station 20, the base station 20 allows the mobile station 20 the permission of use of the component carriers except the component carrier in which is transmitted on

MsgO. In other words, base station 10 implements cross carrier programming using MsgO. Accordingly, base station 10 and the

INSTITUTO MWCAÍíO iZO

FROM THE FSO? I £ C. \ F>

mobile station 20 need not separately perform a procedure *^Lder permission to use the component carrier. .......

Base station 10 and mobile station 20 further changes the component bearer in a deactivated state to that in an active state along with the transmission and reception of the MsgO and Msg1. Accordingly, base station 10 and mobile station 20 need not separately perform a component carrier state change procedure. As can be seen from the foregoing description, base station 10 and mobile station 20 effectively control usage of the plurality of component carriers.

Third modality

Next, a third embodiment will be described. The third modality will be described with a focus on the difference from the second modality described above, and the same questions will not be repeated. In the second mode, cross-carrier programming is implemented by the MsgO, and on the other hand, cross-carrier programming is implemented by the Msg2 in the third mode.

A mobile communication system according to the third embodiment is implemented by the same system configuration as that mobile communication system according to the second embodiment illustrated in Figure 2. A base station and a mobile station of the third embodiment are implemented. using the same block configurations are those of the base station 10 and the mobile station 20 of the mode illustrated in Figures 6 and 7. The third modality- will be -described later using the reference numbers used in Figures 2,

6, and 7.

Fig. 19 is a flowchart illustrating a base station procedure according to the third embodiment. The procedure illustrated in Figure 19 includes the following steps:

(Step S211) The control unit 14 sets the states of CC # 1 to # 5 with respect to mobile station 20. Specifically, control unit 14 identifies the protocols described above CC configured but deactivated, CC configured and activated and PDCCH monitoring setting.

(Step S212) The PDCCH 16 control unit generates the dedicated preamble notification (MsgO) that does not include the CIF. Radio communication unit 11 transmits the MsgO to mobile station 20 using the component carrier included in the monitoring setting

PDCCH.

(Step S213) The radio communication unit 11 receives the random access preamble (Msg1) from the mobile station 20 using the component bearer on which the MsgO is transmitted.

(Step S214) Control unit 14 determines whether to implement cross carrier programming. Specifically, control unit 14 determines whether to perform data communication except for the component bearer on which the "random access (Msg2) response is transmitted. If not, the procedure advances to step§? T5? If so, the procedure proceeds to step S216.

(Step S215) The RAR 18 control unit establishes 0b111 in the CIF included in the Msg2. This binary digit stream indicates that data communication is performed by the component bearer on which Msg2 is transmitted. The procedure then proceeds to step S218.

(Step S216) From CC # 1 to # 5, control unit 14 selects one or a plurality of component carriers on which data communication is performed except for the component carrier on which the Msg2 is transmitted .

(Step S217) The RAR control unit 18 sets a 3-bit CIF indicating the component bearer selected in step S216. It should be noted that the Msg2 is transmitted for each component carrier selected in step S216.

(Step S218) The radio communication unit 11 transmits the Msg2 including the CIF setting in step S215 or S217 to the mobile station 20 using the component bearer included in the PDCCH monitoring setting. In the case where the plurality of component carriers are selected in step S216, the radio communication unit 11 transmits a plurality of settings Msg2. In the case where the component carrier notified by the Msg2 is set as the configured but deactivated CC (state deactivated), the control unit 14 changes this to the configured and activated CC (active state). The communication unit ... po.r_rj: adia 11 then performs data communication using the component bearer notified by Msg2.

Fig. 20 is a flowchart illustrating a base station procedure according to the third embodiment. The procedure illustrated in Figure 20 includes the following steps:

(Step S221) The control unit 23 adjusts the states of CC # 1 to # 5. Specifically, the control unit 23 identifies the configured but disabled DC, configured and enabled DC protocols and PDCCH monitoring setting. The radio communication unit 21 monitors the PDCCH of the component carrier included in the monitoring setting

PDCCH.

(Step S222) The radio communication unit 21 transmits the MsgO does not include the CIF of the mobile station 10 using the component carrier included in the PDCCH monitoring setting.

(Step S223) The radio communication unit 21 transmits the Msg1 using the signal sequence specified by the MsgO to the base station 10 using the PRACH of the component bearer in which the MsgO is transmitted.

(Step S224) The radio communication unit 21 receives the

Msg2 from base station 10 using the component bearer on which Msg1 is transmitted. The RAR 27 control unit extracts the CIF included in the Msg2. In the case where the plurality of the Msg2 settings are received, the RAR control unit 27 extracts the CIF at each Msg2.

<img file="MX337699B_D0040.tif" />

(Step S225) The RAR control unit 27 identifies one or the plurality of component bearers indicated by the CIF extracted in step S224, and performs the PDSCH receive processing using the component bearers. In the case where the component carrier indicated by the CIF is set as CC configured but disabled, the RAR 27 control unit changes it to CC configured and enabled. The cross carrier adjusting unit 22 adjusts a frequency band to perform signal processing.

(Step S226) The radio communication unit 21 performs the data communication using the component bearer identified in step S225.

Figure 21 illustrates a first example of random access according to the third embodiment. Mobile station 20 is assumed to set CC # 1 and # 2 as the configured and enabled CC and CC # 3 to # 5 as the configured but disabled CC. It is further assumed that the PDCCH monitoring setting includes only CC # 1.

(Step S231) Base station 10 transmits the MsgO to mobile station 20 using CC # 1 set as the PDCCH monitoring setting.

(Step S232) Mobile station 20 transmits Msg1 to base station 10 using CC # 1 where MsgO is received.

(Step S233) The base station 10 transmits the Msg2 that includes the CIF = 0b001 to the mobile station 20 using the CC # 1 in which it is received

M 1

1N^PT'TU | TO MEXICANO the Msg1. On the Msg2, the timing adjustment information

<img file="MX337699B_D0041.tif" />

UL frequency of CC # 2 is included. ___ (Step S234) Using CC # 2 indicated by CIF = Ob001, for example, mobile station 20 transmits the data to base station 10. It should be noted that because CC # 2 is set as the configured CC and activated, mobile station 20 need not change a state of CC # 2.

Figure 22 illustrates a second example of random access according to the third embodiment. The states from CC # 1 to # 5 at the time of starting the random access procedure are the same as those in figure 21.

(Step S241) Base station 10 transmits the MsgO to mobile station 20 using CC # 1 set as the PDCCH monitoring setting.

(Step S242) Mobile station 20 transmits Msg1 to base station 15 using CC # 1 where MsgO is received.

(Step S243) Base station 10 transmits Msg2 including CIF = 0b010 to mobile station 20 using CC # 1 where Msg1 is received. Because CC # 3 indicated by CIF = 0b010 is set as the configured CC although disabled, base station 10 activates CC # 3 and changes it to the configured and activated CC. It should be noted on the Msg2, timing adjustment information in the UL frequency band of CC # 3 is included.

(Step S244) Using CC # 3 indicated by CIF = 0b010, for example, mobile station 20 transmits the data to base station 10. At this point, in the same way as in base station 10, mobile station activates CC # 3 and changes the configured but disabled CC to the configured and activated CC.

Figure 23 illustrates a third example of random access according to the third embodiment. The states from CC # 1 to # 5 at the time of starting the random access procedure are the same as those in figure 21.

(Step S251) Base station 10 transmits the MsgO to mobile station 20 using CC # 1 set as the PDCCH monitoring setting.

(Step S252) Mobile station 20 transmits Msg1 to base station 10 using CC # 1 where MsgO is received.

(Step S253) The base station 10 transmits the Msg2 that includes the CIF = 0b001 to the mobile station 20 using the CC # 1 in which the Msg1 is received. To be noted on the Msg2, timing adjustment information in the CC # 2 UL frequency band is included.

(Step S254) Base station 10 transmits Msg2 including CIF = 0b010 to mobile station 20 using CC # 1 where Msg1 is received. Because CC # 3 indicated by-CIF = Ob010 is set as the configured CC although disabled, base station 10 activates CC # 3 and changes it to the configured and activated CC. It should be noted on the Msg2, timing adjustment information in the UL frequency band of CC # 3 is included.

'_γ;^?(Step S255) Using CC # 2 indicated by CIF = Ob001, for example, mobile station 20 transmits the data to base station 10.

(Step S256) Using CC # 3 indicated by CIF = 0b010, for example, mobile station 20 transmits the data to base station 10. At this point, in the same way as in base station 10, mobile station 20 activates CC # 3 and changes the configured but disabled CC to the configured and activated CC.

Figure 24 illustrates a first example format of Msg2. In the example format of Figure 24, the Msg2 includes a 3-bit bearer indicator, a 6-bit timing advance command, a 20-bit UL grant, and a 16-bit temporary C-RNTI.

As described above, the Bearer Indicator is a value to discriminate the component bearer on which data transmission is performed. The timing advance command is a value indicating an amount of the timing setting at the time of allowing the mobile station 20 to correct the UL transmission timing. The UL grant is information illustrating the UL radio resource assigned to mobile station 20. The temporary C-RNIT is an identifier dynamically assigned to mobile station 20 through base station 10. In addition, the timing advance command indicates the amount of timing adjustment that is related to the component bearer indicated by the carrier indicator. Accordingly, the mobile station 20 adjusts the UL timing after the random access procedure using the timing advance command.

At this point, the timing advance command is described, for example, in “Evolved Universal Terrestrial Radio Access (EUTRA); Physlcal layer procedures ”(3GPP TS 36.213 V9.0.1, 2009-12).

In the literature described above, two types of absolute value in a timing offset and a relative value using the currently corrected timing that is defined as the timing advance command as a reference. The absolute value is used in the case where the timing advance command is notified first, or a validity period of a previously notified timing advance command expires. The relative value is used in the case where the validity period of the previously reported timing advance command has not expired. The absolute value is represented by 11 bits and the relative value is represented by 6 bits. In the example format of the figure

24, the relative value is assumed to be used.

In the example format above, a more significant reserved bit is set to one. A more significant R bit of the Msg2 that does not include the CIF is set to zero. Through the procedure, the mobile station 20 easily determines whether the Msg2 Includes the CIF.

Figure 25 illustrates a second example format of Msg2. In the example format of Figure 25, the Msg2 includes the 11-bit timing advance command, the 20-bit UL grant, the 3-bit bearer flag, and the 13-bit temporary C-RNTI. In the case of this format

I NSTITUTC M EX.iCANO V OF THE PROPERTY \

INDUSTRIAL example, the absolute value can be used as the timing advance command. On the other hand, the temporary C-RNTI is less by 3 bits than that in the case of figure 24. The base station 10 assigns an identifier with the ability to be represented by 13 bits or less to the mobile station

20.

Figure 26 illustrates a third example format of Msg2. In the example format of Figure 26, the Msg2 includes the 11-bit timing advance command, the 20-bit UL grant, the 16-bit temporary C-RNTI, and the 3-bit bearer flag. In the case of this example format, the absolute value can be used as the timing advance command. Base station 10 assigns an identifier having a value greater than that of FIG. 25 to mobile station 20. It should be noted that a size of Msg2 increases more than those of the example formats in Figures 24 and 25. In addition, the CIF can be provided in the least significant of the bits in Figure 26, and additionally, the CIF can be inserted in the other positions.

In accordance with this third mode mobile communication system, transmitting the Msg2 to the mobile station 20, the base station 10 allows the mobile station 20 a permission to use the component bearers except the component bearer in which it is transmits Msg2. In short, base station 10 implements cross carrier programming using Msg2. Accordingly, base station 10 and mobile station 20 need not separately perform a procedure for the component bearer use permit.

Base station 10 and mobile station 20 additionally changes the component bearer in a deactivated state to that in an active state along with transmission and reception of Msg2. Accordingly, base station 10 and mobile station 20 need not separately perform a change procedure for a component carrier state. As can be seen from the foregoing description, base station 10 and mobile station 20 effectively perform usage control of the plurality of component carriers in the same manner as in the second embodiment.

Fourth modality

Next, a fourth embodiment will be described. The fourth modality will be described with a focus on the difference from the second and third modalities described above, and the same questions will not be repeated. In the fourth mode, cross carrier programming is implemented by the Msg2 in the same way as in the third mode. It should be noted that non-containment-based random access was assumed in the third modality, and on the other hand, contention-based random access was assumed in the fourth modality.

A mobile communication system according to the fourth embodiment is implemented by the same system configuration as that mobile communication system according to the second embodiment illustrated in Figure 2. A base station and a mobile station according. ,, with The fourth embodiment is further implemented by the same block configurations as those of base station 10 and mobile station 20 of the second embodiment illustrated in Figures 6 and 7. Hereinafter, the fourth embodiment will be described using the reference numbers used in Figures 2, 6, and 7.

Fig. 27 is a flow chart illustrating a base station procedure according to the fourth embodiment. The procedure illustrated in Figure 27 includes the following steps:

(Step S311) The control unit 14 establishes the states of the

CC # 1 to # 5 with respect to mobile station 20. Specifically, control unit 14 identifies the protocols described above CC configured but disabled, CC configured and enabled, and PDCCH monitoring setting.

(Step S312) The radio communication unit 11 receives the random access preamble (Msg1) from the mobile station 20 using the component bearer in the PDCCH monitoring setting. A signal sequence used in Msg1 is randomly selected by mobile station 20.

(Step S313) Control unit 14 determines whether to implement cross carrier programming. If not, the procedure advances to step S314. If so, the procedure proceeds to step S315.

(Step S314) The RAR 18 control unit establishes the 0b111 'NSTn-Uí-V

DC _. ·: V._{; :} · As the CIF included in the Msg2. The procedure then proceeds to step

S317.

(Step S315) From CC # 1 to # 5, control unit 14 selects one or a plurality of component carriers on which data communication is performed except for the component carrier on which the Msg2 is transmitted .

(Step S316) The RAR control unit 18 sets a 3-bit CIF indicating the component bearer selected in step S315. Furthermore, Msg2 is transmitted for each component bearer selected in step S315.

(Step S317) The radio communication unit 11 transmits the Msg2 including the CIF setting in step S314 or S316 to the mobile station 20 using the component bearer on which the Msg1 is received. In the case where the plurality of component carriers are selected in step S315, the radio communication unit 11 transmits a plurality of settings Msg2.

(Step S318) The radio communication unit 11 receives the Msg3 from the mobile station 20 using the component bearer notified by the Msg2. At this point, in the case where the component bearer notified by the Msg2 is set as the configured but deactivated CC (state deactivated), the control unit 14 changes this to the configured and activated CC (active state).

(Step S319) The radio communication unit 11 transmits \ X. , i X^V the Msg4 to the mobile station 20 using the component bearer on which the Msg3 is received. The data communication unit 11 then performs data communication using the component bearer in which the

Msg3 and Msg4 are transmitted and received.

Fig. 28 is a flow chart illustrating a base station procedure according to the fourth embodiment. The procedure illustrated in Figure 28 includes the following steps:

(Step S321) The control unit 23 adjusts the states of CC # 1 to # 5. Specifically, the control unit 23 identifies the protocols

CC configured though disabled, CC configured and enabled and PDCCH monitoring setting. The radio communication unit 21 monitors the PDCCH of the component carrier included in the monitoring setting

PDCCH.

(Step S322) The radio communication unit 21 transmits the Msg1 using the randomly selected signal sequence to the base station 10 using the component carrier PRACH included in the PDCCH monitoring setting.

(Step S323) The radio communication unit 21 receives the Msg2 from the base station 10 using the component bearer on which the Msg1 is transmitted. The RAR 27 control unit extracts the CIF included in the Msg2. In the case where the plurality of the Msg2 settings are received, the RAR control unit 27 extracts the CIF at each Msg2.

(Step S324) The RAR 27 control unit identifies one or the

INSTITUTE Μ0

DL LA O. jj x V plurality of component carriers indicated by the CIF extracted in step S323. In the case where the component carrier indicated by the CIF is set as CC configured but disabled, the RAR 27 control unit changes it to CC configured and enabled. The cross carrier adjusting unit 22 adjusts a frequency band to perform signal processing.

(Step S325) The radio communication unit 21 transmits the Msg3 to the station 10 using the component carrier indicated by the CIF. In the case where the plurality of the Msg2 settings are received and the plurality of the component carriers are identified in step S324, the radio communication unit 21 transmits the Msg3 to the base station 10 for each of the carriers component identified. The plurality of the Msg3 settings can be transmitted in the same timing, or in a different timing.

(Step S326) The radio communication unit 21 receives the

Msg4 from base station 10 using the component bearer on which Msg3 is transmitted. Data communication unit 21 then performs data communication using the component bearer in which Msg3 and Msg4 are transmitted and received.

Figure 29 illustrates a first example of random access according to the fourth embodiment. Mobile station 20 is assumed to set CC # 1 and # 2 as the configured and enabled CC and CC # 3 to # 5 as the configured but disabled CC. It is further assumed that the adjustment of

<img file="MX337699B_D0042.tif" />

PDCCH monitoring includes only CC # 1.

(Step S331) Mobile station 20 transmits Msg1 using randomly selected signal sequence to station 10 using setting CC # 1 as the "PDCCH monitoring setting".

(Step S332) Base station 10 transmits Msg2 including CIF = 0b001 to mobile station 20 using CC # 1 where Msg1 is received.

(Step S333) Mobile station 20 transmits Msg3 to base station 10 using CC # 2 indicated by CIF = 0b001.

(Step S334) Base station 10 transmits Msg4 to mobile station 20 using CC # 2 where Msg3 is received. Using CC # 2, for example, mobile station 20 then transmits the data to base station 10. It should be noted that in the event of random access contention, mobile station 20 again transmits Msg1 to the station base 10.

Figure 30 illustrates a second example of random access according to the fourth embodiment. The states from CC # 1 to # 5 at the time of starting the random access procedure are the same as those in figure 29.

(Step S341) Mobile station 20 transmits Msg1 using the randomly selected signal sequence to station 10 using setting CC # 1 as the "PDCCH monitoring setting".

(Step S342) Base station 10 transmits the Msg2 that includes ¿A • '·' ·. ί the CIF = ObO1O to the mobile station 20 using the CC # 1 in which is received,.,,., the Msg1. Because CC # 3 indicated by CIF = 0b010 is set as the configured CC although disabled, base station 10 activates CC # 3 and changes it to the configured and activated CC.

(Step S343) Mobile station 20 transmits Msg3 to base station 10 using CC # 3 indicated by CIF = 0b010. In the same manner as in base station 10, mobile station 20 activates CC # 3 and changes the configured but disabled CC to the configured and enabled CC.

(Step S344) Base station 10 transmits Msg4 to mobile station 20 using CC # 3 in which Msg3 is received. Using CC # 3, for example, mobile station 20 then transmits the data to base station 10.

Figure 31 illustrates a third example of random access according to the fourth embodiment. The states from CC # 1 to # 5 at the time of starting the random access procedure are the same as those in figure 29.

(Step S351) Mobile station 20 transmits Msg1 using the randomly selected signal sequence to station ase 10 using setting CC # 1 as the "PDCCH monitoring setting".

(Step S352) Base station 10 transmits Msg2 including CIF = 0b001 to mobile station 20 using CC # 1 where Msg1 is received.

(Step S353) Base station 10 transmits the Msg2 that includes

<img file="MX337699B_D0043.tif" />

inst turned CIF = 0b010 to mobile station 20 using CC # 1 on which it is feeded. the Msg1. Because CC # 3 indicated by CIF = 0b010 is set as the configured CC although disabled, base station 10 activates CC # 3 and changes it to the configured and activated CC.

(Step S354) Mobile station 20 transmits Msg3 to base station 10 using CC # 2 indicated by CIF = 0b001.

(Step S355) Mobile station 20 transmits Msg3 to base station 10 using CC # 3 indicated by CIF = 0b010. At this point, in the same way as in base station 10, mobile station 20 activates the

CC # 3 and changes the configured but disabled CC to the configured and activated CC.

(Step S356) Base station 10 transmits Msg4 to mobile station 20 using CC # 2 where Msg3 is received.

(Step S357) Base station 10 transmits Msg4 to mobile station 15 20 using CC # 3 where Msg3 is received.

As a Msg2 format according to the fourth embodiment, the example format described in the third embodiment is used. In contention-based random access, because there is a possibility that base station 10 will not recognize mobile station 20 at the time of Msg2 transmission, formats such as those in Figures 25 and 26 are preferably used in the which, the timing advance command of an absolute value was transmitted. In the fourth embodiment, for the same reason, it is preferable that mobile station 20 can use all or

<img file="MX337699B_D0044.tif" />

plurality of previously determined component carriers.

Furthermore, in the case of contention-based random access, it was also considered that cross-carrier scheduling was implemented for the purpose of load balancing, so that a plurality of mobile stations do not heavily utilize a specific component carrier in the which the random access procedure is performed to mitigate the interference between cells, and distributing the component carriers on which Msg3 is transmitted to reduce a probability of contention.

In accordance with the previously described mobile communication system of the fourth embodiment, base station 10 implements cross-carrier programming using Msg2 in the same manner as in the third embodiment. Therefore, a permission procedure for the use of the component carrier need not be performed separately. Along with the transmission and reception of the Msg2 and the Msg3, the base station 10 and the mobile station 20 additionally change the component carrier in a deactivated state within that in the activated state. Accordingly, a component carrier state change procedure need not be performed separately. As can be seen from the planning above, base station 10 and mobile station 20 effectively control usage of the plurality of component carriers in the same manner as in the second and third modes.

The foregoing is considered as illustrative only of the

<img file="MX337699B_D0045.tif" />

principles of the present invention. Furthermore, because modifications and changes will easily come to the mind of those skilled in the art, it is not desired to limit the present invention to the exact construction and applications shown and described, and accordingly, all suitable modifications and equivalents may to be considered within the scope of the invention in the appended claims and their equivalents.