Mobile communication method, radio base station, and upper level node
8 claims: 4 independent, 4 dependent
- 1REIVINDICAÇÕES 1. Método de uma comunicação móvel para executar o handover de uma estação móvei a partir de uma estação base de rádio para uma outra estação base de rádio diferente da estação base de rádio em um sistema de comunicação móvel incluído uma pluralidade de estações base de rádio e um nó superior da pluralidade de estações base de rádio, na qual o nó superior e uma estação base de fonte de handover armazena a informação de configuração em um terminal de acesso que é configurado entre o nó superior e a estação base de rádio da fonte de handover, o método de uma comunicação móvel compreendendo as etapas de:(a) informar, a partir da estação base de rádio da fonte do handover para uma estação base de rádio do alvo do handover, a informação de configuração do terminal de acesso;(b) armazenar, na estação base de rádio do alvo do handover, a informação de configuração do terminal informada pela estação base de rádio do alvo do handover;e (c) o estabelecimento, no nó superior, de um terminal de acesso entre o nó superior e a estação base de rádio do alvo de handover usando a informação de configuração do terminal de acesso armazenada sem executar o processamento da redistribuição da nova informação de configuração do terminal do acesso, o terminal de acesso sendo configurado em resposta a um pedido de mudança de trajeto da estação base de rádio do alvo do handover.
- 2Método de uma comunicação móvel, de acordo com a reivindicação 1,em que cada um dos terminais de acesso é um túnel utilizado para transmitir dados de usuário, e a informação de configuração do terminal do acesso é um TE-ID de GTP-U no lado do nó superior no túnel.
- 3Método de uma comunicação móvel, de acordo com a reivindicação 1, em que, na etapa (a), a estação base de rádio da fonte do handover informa a estação base de rádio do alvo do handover de um emdereço de IP para o nó superior além da informação de configuração do terminal de acesso.
- 4Método de uma comunicação móvel, de acordo com a reivindicação 1, em que, em etapa (A) a estação base de rádio da fonte do handover transmite a informação de configuração do terminal do acesso à estação base de rádio do alvo do handover por meio de ser a informação de configuração do terminal do acesso contida em uma mensagem que solicita que a estação base de rádio do alvo do handover execute o handover.
- 5Método de uma comunicação móvel, de acordo com a reivindicação 1, em que, na etapa (B) a estação base de rádio do alvo do handover seleciona a informação de configuração do terminal do acesso que pode ser cedida à estação base de rádio do alvo do handover a partir da informação de configuração do terminal do acesso informada pela estação base de rádio do alvo do handover, e armazena a informação de configuração do terminal do acesso selecionada assim.
- 6Estação base de rádio usada em um sistema de uma comunicação móvel em que o handover de uma estação móvel pode ser executado, a estação base de rádio que compreende:uma unidade de controle do handover configurada para transmitir uma mensagem a uma estação base de rádio do alvo do handover quando uma condição predeterminada for satisfeita no que diz respeito a qualidade de uma comunicação na estação móvel;a mensagem que solicita que a estação base de rádio do alvo do handover execute o handover, em que a unidade de controle do handover é configurada para transmitir um TE-ID de GTP-U no lado do nó superior em um túnel tendo o TE-ID contido na mensagem, o túnel sendo configurado entre a estação base de rádio e um nó superior da estação base de rádio e sendo usado para a transmissão de dados de usuário.
- 7Estação base de rádio usada em um sistema de uma comunicação móvel em que o handover de uma estação móvel pode ser executado, a estação base de rádio que compreende:uma unidade de controle do handover configurada para configu3 rar um túnel para transmitir dados de usuário, entre a estação base de rádio e um nó superior da estação base de rádio ao ter recebido uma mensagem de uma estação base de rádio da fonte do handover, a mensagem solicita que a estação base de rádio execute o handover, em que 5 a unidade de controle do handover é configurada para configurar o túnel entre a estação base de rádio e o nó superior usando TE-ID de GTPU no lado do nó superior em um túnel configurado entre a estação base de rádio da fonte do handover e o nó superior, o TE-ID sendo contido na mensagem.
- 810 8. Nó superior de uma pluralidade das estações base de rádio usadas em um sistema de uma comunicação móvel em que o handover de uma estação móvel pode ser executado, em que o nó superior é configurado para armazenar a informação de configuração em um terminal de acesso que é configurado entre o nó supe15 rior e uma estação base de rádio da fonte do handover, e em resposta a um pedido de mudança do trajeto de uma estação base de rádio de alvo do handover, o nó superior é configurado para configurar um terminal do acesso entre o nó superior e a estação base de rádio do alvo do handover usando a informação de configuração do terminal do aces20 so armazenada, sem executar o processamento de redistribuição da nova informação do terminal do acesso. 1/7
Independent claims8
127 paragraphs in 1 section, as filed
(54) Title: MOBILE COMMUNICATION METHOD, (57) Summary:
RADIO BASE STATION AND LEVEL NODE
SUPERIOR (30) Unionist Priority: 03/09/2007 jp 2007-061090 (73) Holder (s): nu Docomo, inc.
(72) Inventor (s): Masayuki Motegi, TAKEHIRO NAKAMURA,
Wuri Andarmawanti Hapsari, Yasuhiro Kato, Yoshitsugu Shimazu (74) Attorney (s): Dannemann, Siemsen, Bigler &
Ipanema Moreira (86) International Order: pct JP2008054127 of 07/03/2008 (87) International Publication: wo 2008 / m502de
18/09/2008
<img file="BRPI0808710A2_D0001.tif" />
Descriptive Report of the Invention Patent for MOBILE COMMUNICATION METHOD, RADIO BASE STATION AND TOP LEVEL NODE.
Technical Field
The present invention relates to a mobile communication method for handovering a mobile station from a handover source radio base station to a handover target radio base station in a mobile communication system including multiple base stations radio and a top node of multiple radio base stations.
In addition, the present invention relates to a radio base station and an upper node used in the above mobile communication method.
Background of the Technique
In an IMT-2000 (International Mobile Telecommunication-2000) system, as shown in figure 1, an lu interface is defined between a RAN (Radio Access Network) node (for example, RNC: Radio Network Controller - Radio Network Controller) and a central node (for example, SGSN; Serving GPRS Service Node - GPRS Server Operation Node) and a GTP tunnel (GPRS Tunneling Protocol) used for data transmission in a user plane (U-plane) is established in the lu interface.
In the IMT-2000 system above, when a mobile station performs a handover through RNCs which are under the control of the same SGSN, that is, when the mobile system performs SRSK relocation, the SGSN transmits a Request for Relocation message using RANAP ( Radio Access Network Application Part - and the final GTP tunnel ID on the SGSN side is reset to zero.
That is, an SGK informs RNC # 2 of a final GTP tunnel ID on the Node B side using the Request for Relocation message, and thus a GTP tunnel # 2 is established between the SGSN and an RNC # 2 handover target.
Non-Patent Document 1: 3GPP TS25.413.
Disclosure of the Invention
In a next generation mobile communication system (for example, LTE: Long Term Evolution) after XMT-2000 systems, an SI interface corresponding to an lu interface is defined. Also, at the SI interface, a GTP tunnel is configured between a RAN node (for example, an eNB radio base station) and a central node (for example, Port SAE (System Architecture Evolution - Evolution of System Architecture).
In the mobile communication system above, in handover, an SAE Access Terminal, corresponding to an SAE Access Terminal having been established between an eNB handover source radio base station and the central node SAE Port, needs to be configured between a station eNB handover target radio base and the central node SAE Port.
Usually, the central node's SAE Port starts the establishment above the SAE Access Terminal.
In the LTE system, however, handover is performed as follows. Specifically, as shown in figure 2, an eNB handover target radio base station<sub>2</sub> transmits a Complete Handover message in step S2007. Then, in step S2008, a central node SAE Port performs processing for reallocation of a TE (End of Tunnel) ID on the side of the central node in the GTP tunnel to be configured between the central node and the target radio base station of eNB handover<sub>2</sub>. Consequently, the LTE system has a handover delay problem.
The present invention was made taking into account the problem described above and an objective of the present invention is to provide a method of mobile communication, a radio base station and an upper node which are capable of reducing a delay in the handover allowing a eNB handover target radio base station use an UE context aided by an eNB handover source radio base station in handover.
A first aspect of the present invention is summarized as a method of mobile communication for handovering a mobile station from a radio base station to another radio base station other than the radio base station in a mobile communication system including a plurality of stations radio base station and a top node of the plurality of radio base stations, in which the upper node and a handover source radio base station store configuration information about an access terminal having been configured between the upper node and the handover source radio base station, the mobile communication method including the steps of:
(A) inform, from the handover source radio base station to a handover target radio base station, the access terminal configuration information; (B) store, in the target handover radio base station, the access terminal configuration information informed by the target handover radio base station; and (C) establishing, on the upper node, an access terminal between the upper node and the handover target radio base station using the configuration information stored in the access terminal without performing relocation processing of the new terminal configuration information. of access, the access terminal being configured in response to a change of path request from the handover target radio base station.
In the first aspect, each of the access terminals can be a tunnel used for user data transmission and the configuration information of the access terminal can be a GTP-U TE-ID on the upper node side in the tunnel.
In the first aspect, in step (A), the handover source radio base station can inform the handover target radio base station about an IP address for the upper node, in addition to the configuration information of the access terminal.
In the first aspect, in step (A), the handover source radio base station can transmit the configuration information from the access terminal to the handover target radio base station by the fact that the access terminal configuration information is contained in a message that requests the handover target radio base station to perform the handover.
In the first aspect, in step (B), the handover target radio base station can select the access terminal configuration information that can be assigned to the handover target radio base station from the access terminal configuration information informed by the handover target radio base station and store the configuration information of the access terminal so selected.
In the second aspect of the present invention, it is summarized as a radio base station used in a mobile communication system in which handover of a mobile station can be performed, the radio base station including: a handover control unit configured to transmit a message to a target handover radio base station when a predetermined condition is met with respect to the quality of communication at the mobile station, the message asking the target handover radio base station to perform the handover, in which the handover control unit is configured to transmit a GTP-U TE-ID on the upper node side in a tunnel because it has the TE-ID contained in the message, the tunnel having been established between the radio base station and an upper node of the radio base station and being used for user data transmission.
A second aspect of the present invention is summarized as a radio base station used in a mobile communication system in which a mobile station's handover can be performed, the radio base station including: a handover control unit configured to establish a tunnel for user data transmission between the radio base station and an upper node of the radio base station when it received a message from a handover target radio base station, the message requesting that the radio base station performs the handover, wherein the handover control unit is configured to tunnel between the radio base station and the upper node using a GTP-U TE-ID on the upper node side in a tunnel established between the source radio base station handover and the upper node, the TE-ID being contained in the message.
A third aspect of the present invention is summarized as an upper node of a plurality of radio base stations used in a mobile communication system in which handover of a mobile station can be performed, in which the upper node is configured to store information configuration over an access terminal having been configured between the upper node and a handover source radio base station, the upper node is configured to establish the stored access terminal configuration information without reallocating new access terminal configuration information.
As described above, the present invention can provide a method of mobile communication, a radio base station and an upper node which are capable of reducing a delay in the handover by allowing an eNB handover target radio base station to use an UE context aided by an eNB handover source radio base station, in handover.
Brief Description of Drawings
Figure 1 is a diagram of the entire configuration of a system
IMT 2000.
Figure 2 is a sequence diagram showing handover operations on a next generation mobile communication system.
Figure 3 is a diagram of the entire configuration of a mobile communication system according to a first embodiment of the present invention.
Figure 4 is a functional block diagram of an eNB according to the first embodiment of the present invention.
Figure 5 is a functional block diagram of an SAE Door according to the first embodiment of the present invention.
Figure 6 is a diagram in sequence showing handover operations in the mobile communication system according to the first embodiment of the present invention.
Figure 7 is a flowchart showing an operation of the eNB according to the first embodiment of the present invention.
Figure 8 is a flow chart showing an operation of the eNB according to the first embodiment of the present invention.
Figure 9 is a flowchart showing an operation of the SAE Gate according to the first embodiment of the present invention.
Best Mode for Carrying Out the Invention (Configuration of the Mobile Communication System According to the First Modality of the Present Invention)
A first embodiment of the present invention will be described with reference to figures 3 to 5.
A mobile communication system in accordance with this modality is operable to implement a communication technology used during handover, in particular operable to implement an access terminal communication technology which is established between a radio base station (here after eNB ) and an upper node (here after Porta SAE).
In this modality, description will be provided taking, as an example, a mobile communication system including, as shown in figure 3, an LTB / SAE architecture of which standardization has been carried out at 3GPP. However, the present invention is not limited to the above mobile communication system and is applicable to a mobile communication system including another architecture.
A radio access network is made up of multiple eNBs and a central node MME / SAE Port to which the eNBs are connected.
Here, an MME is a node that handles control data and an SAE Port is a node that handles user data.
Note that, although the eNBs are connected to each other via interfaces called X2 interfaces, each eNB and the MME / SAE Port are connected to each other via an interface called an S1 interface.
Data in the control plane (C-plane) (control data) and data in the user plane (U-plane) (user data) are transmissible over an X2 interface or an S1 interface.
In particular, data in the user plane is transmitted via GTP-U / UDP and a GTP tunnel used for data transmission in the user plane is established between an eNB and the SAE Port having TE-IDs exchanged between them.
As shown in figure 4, each of the eNBs, according to the present embodiment, includes a control unit 101, a wired transmission unit 102, a handover control unit 103 and a context management unit 104.
The control unit 101 is configured to control operations of the respective function units 102 to 104.
Wired transmission unit 102 is configured to transmit and receive control data and user data via a wired transmission path.
The context management unit 104 is configured to contain a UE Context containing a GTP-U TE-ID (access terminal configuration information) for identification of each mobile station (here after UE) on an SAE Access Terminal ”(An access terminal established between eNB and Porta SAE.
The handover control unit 103 is configured to perform signaling during handover.
For example, handover control unit 103 is an eNB handover source configured to report an eNB<sub>2</sub> handover target of an UE Context (containing access terminal configuration information, such as a GTP-U TE-ID on the SAE Port side in a GTP tunnel) of a handover in question.
Specifically, the handover control unit 103 is configured to transmit a Handover Request message when it is considered, based on a measurement transmission message transmitted from the EU, that the communication quality in the EU satisfies a predetermined condition, the message Handover Request requesting that eNB<sub>2</sub> handover target perform the handover.
Additionally, the handover control unit 103 can be configured to transmit a TE-ID on the side of the SAE Port in a GTP tunnel having the TE-ID, according to the configuration information of the access terminal described above, contained in Handover Request message, the GTP tunnel having been established between the eNB and the SAE Port, which is a superior node of the eNB.
Additionally, the handover control unit 103 can be configured to inform eNB<sub>2</sub> handover target of an IP address for the SAE Port (an address for the upper node), in addition to the configuration information of the access terminal described above.
The handover control unit 103 in the handover target eNB2 is configured to establish a GTP tunnel between the eNB<sub>2</sub> handover target and the SAE Port when having received an eNB message<sub>2</sub> handover source requesting that eNB<sub>2</sub> handover target perform the handover.
Specifically, the handover control unit 103 above is configured to establish the GTP tunnel between the eNB<sub>2</sub> handover target and the SAE Port using the TE-ID, which is contained in the Handover Request message, on the SAE Port side in the GTP tunnel that was established between the handover source eNBi and the SAE Port.
Here, the handover control unit 103 above is configured to perform relocation processing with respect to a TE-ID on the eNB side.<sub>2</sub> handover target in the GTP tunnel above.
Note that, since TE-IDs can be independently allocated to the respective eNBs, the handover control unit 103 above is configured to allocate the same TE-ID as the TE-ID reported by the handover source eNBi, that is, the TE-ID on the eNB side<sub>2</sub> handover target in the GTP tunnel above.
In addition, the handover control unit 103 above is configured to inform the SAE Port of the allocated TE-ID (access terminal configuration information) on the eNB side<sub>2</sub> handover target and an IP address for eNB<sub>2</sub> handover target using a Full Handover message.
Additionally, the handover control unit 103 at eNB<sub>2 </sub>handover target can be configured to select the configuration information of the access terminal (a TE-ID on the side of the eNB<sub>2</sub>) that can be manipulated over eNB<sub>2</sub> handover target from the access terminal configuration information (TE-IDs on the eNB side<sub>2</sub>) informed by the eNBi handover source and store it in the access terminal configuration information so selected.
Table 1 shows an example of the Request for
Handover used in this mode.
[Table 1]
<td>Information element</td><td>Need- sario</td><td>Type and reference</td><td>Description of semantics</td>
<td>Type of message</td><td>MP</td><td>Type of message</td><td></td>
<td>ENB communication context id</td><td>MP</td><td>Bit string (24)</td><td>For eNB font</td>
<td>MME communication context id</td><td>MP</td><td>Bit string (24)</td><td></td>
<td>Transparent container</td><td>MP</td><td>Transparent container</td><td></td>
<td>SAE access terminal lEs</td><td></td><td></td><td></td>
<td>> configuration list of SAE Access Terminal</td><td>MP</td><td></td><td></td>
<td>»A-Terminal ID SAE process</td><td>MP</td><td>Bit string (8)</td><td></td>
<td>»SAE Access Terminal parameters</td><td>MP</td><td>Access terminal parameters SAE</td><td></td>
<td>transport layer lEs</td><td></td><td></td><td></td>
<td>»S1 Transport Association</td><td>MP</td><td>String of octets Í4)</td><td>TE-ID for SAE Port</td>
<td>»Transport layer association</td><td>MP</td><td>String of octets (4)</td><td>IP address for eNB font</td>
<td>UP tunnel lEs</td><td></td><td></td><td></td>
<td>Information element</td><td>Need- sario</td><td>Type and reference</td><td>Description of semantics</td>
<td>»Transport association X2</td><td>MP</td><td>String of octets (4)</td><td>TE-ID for eNB font</td>
<td>»Layer address carriage</td><td>MP</td><td>String of octets (4)</td><td>IP address for eNB font</td>
The Handover Request message above contains EU Contexts aided by the eNBi handover source. UE Contexts are, for example, a list of SAE Access Terminals that were established by the handover source eNBi, ΤΕ-IDs on the SAE Port side in the respective SAE Access Terminals and an IP address for the SAE Port.
The above Handover Request message may contain other than the above information, another UE Context required by eNB<sub>2</sub> handover target.
As shown in figure 5, the SAE Port according to this modality includes a control unit 201, a wired transmission unit 202 and a context management unit 203.
The control unit 201 is configured to control the operations of the respective function units 202 and 203. The wired transmission unit 202 is configured to transmit and receive control data and user data through a wired transmission path.
The context management unit 203 is configured to contain contexts by which user data from the respective UEs are identified and zero the contexts in the eNB<sub>2</sub> handover target for the same contexts as above after a change of path (change of path).
That is, the context management unit 203 is configured to assign a TE-ID on the side of the SAE Port in the GTP tunnel between the eNB! handover source and the SAE Port without reallocating the new access terminal configuration information (a TEID on the SAE Port side) in response to an eNB Change of Path message (change of path request)<sub>2</sub> handover target.
Specifically, the 203 context management unit is configured to store access terminal configuration information (the TE-ID on the eNB side)<sub>2</sub>) informed by eNB<sub>2</sub> handover target using the Full Handover message and establish an access terminal (a GTP tunnel) between the SAE Port and eNB<sub>2</sub> handover target using stored access terminal configuration information.
(Operations of the Mobile Communication System According to the First Modality of the Present Invention)
Operations of the mobile communication system according to the first embodiment of the present invention will be described with reference to figures 6 to 9.
First, handover operations in the mobile communication system according to the first embodiment of the present invention will be described with reference to figure 6.
As shown in figure 6, in step S1001, an UE monitors the quality of communication in the EU according to an eNBi instruction or automatically and transmits a Measurement Report to a cell (the eNBi) to which the EU is connected when the quality cell communication (the eNBO that is connected to it has decreased to a lower level than a predetermined quality.
In step S1002, the eNBi that received the Measurement Report transmits a Handover Request message, for example, to eNB<sub>2</sub> having the best quality of communication among the communication qualities reported from the EU.
Here, the Handover Request message contains a TEID on the SAE Port side at the SAE Access Terminals that have been established between the βΝΒή handover source and the SAE Port and an address (for example, an IP address) for the Port SAE.
In step S1003, eNB<sub>2</sub> that received the Handover Request message transmits a Handover Request Acknowledgment message to eNBi if eNB<sub>2</sub> can accept the EU.
In step S1004, the eNBi that received the Handover Request Acknowledgment message transmits a Handover Command message to the EU instructing the EU about the handover.
In step S1005, the UE that received the Handover Command message transmits a Handover Confirmation message to eNB<sub>2</sub> handover target when a resource for transmitting an upstream signal is allocated to the EU by eNB<sub>2</sub> handover target.
In step S1006, eNB<sub>2</sub> handover target that received the Handover Confirmation message transmits a Route Change message (change path request) to the SAE Port using GTP-U, the Route Change message requesting that a route through which data from are transmitted from the handover source to the handover target.
In step S1007, in parallel, eNB<sub>2</sub> handover target informs about a TE-ID on the eNB side<sub>2</sub> handover target and an IP address for eNB<sub>2</sub> handover target through a Full Handover message, which signals over an S1 interface, in order to establish an SAE Access Terminal, that is, in order to establish a GTP tunnel between eNB<sub>2</sub> handover target and the SAE Port.
In step S1008, after storing the TE-ID on the eNB side<sub>2</sub> handover target and IP address for eNB<sub>2</sub> handover target, the SAE Port transmits a Full Handover Acknowledgment message to the eNB<sub>2</sub> handover target, Full Handover Acknowledgment message which informs you that the configuration of the SAE Access Terminal has been completed.
In step S1009, eNB<sub>2</sub> handover target that received the Full Handover Recognition message transmits a Release Resource message to the handover source eNBn, the Release Resource message instructing the handover source eNBi to release resources that have been used for communications with the EU.
Second, eNB operations according to the present modality will be described with reference to figures 7 and 8.
As shown in figure 7, in step S101, the eNBi that is in communication with the EU confirms whether a Measurement Report has been received or not.
If the Measurement Report has not been received, this operation ends.
On the other hand, if a Measurement Report was received, in step S102, eNB<sub>2</sub> confirms EU UE contexts and transmits an UE context (for example, access terminal configuration information, such as a TE-ID on the SAE Port side in a GTP tunnel) over an X2 interface because it has that UE context contained in the Handover Request message, the UE context requiring handover over eNB<sub>2</sub> handover target.
Additionally, as shown in figure 8, in step S201, eNB<sub>2</sub> who is not in communication with the EU confirms whether the Handover Request message has been received or not.
If the Handover Request message was not received, this operation ends.
On the other hand, if the Handover Request message was received, eNB<sub>2</sub> analyzes relevant EU contexts of the eNB1 handover source contained in the Handover Request message.
In step S203, eNB<sub>2</sub> zeroes, as UE contexts, TE-lDs and addresses on the SAE Port side with respect to the respective SAE Access Terminals contained in the relevant UE contexts above.
In parallel with step S203, eNB<sub>2</sub> transmits the Handover Confirmation Acknowledgment message to the eNBi handover source in step 2004. In step S205, eNB<sub>2</sub> confirms whether or not a Handover Confirmation Message has been received.
If the Handover Confirmation message was not received, this operation repeats step S205.
On the other hand, if the Handover Confirmation message was received, eNB<sub>2</sub> transmits a Change of Path message (change of path request) to the SAE Port through GTP-U.
Thirdly, an operation of Porta SAE according to the present modality will be described with reference to figure 9.
As shown in figure 9, in step S301, the SAE Port confirms that the Change of Route message (request for change of path) was received through GTP-U.
If the Change of Route message (change of route request) was not received, this operation ends.
On the other hand, if the Change of Route message (request to change the route) was received, Porta SAE performs a handover over a UE context from the eNBi source of handover to the eNB<sub>2</sub> handover target.
(Advantageous Effects of the Mobile Communication System According to the First Mode)
According to the mobile communication system according to the first modality, in the EU handover, a delay in the handover can be reduced allowing the eNB<sub>2</sub> handover target use an EU Context maintained by eNB! handover target.
Although the present invention has been described above in detail using the embodiment described above, it is apparent to those skilled in the art that the present invention is not limited by the embodiment described here. The present invention can be implemented as modified and altered aspects without departing from the spirit and scope of the present invention defined by the appended claims. Accordingly, the present description has been provided for purposes of illustrative description and is not restrictive of the present invention.
Note that the entire contents of Japanese Patent Application No. 2007-061090 (filed on March 9, 2007) are hereby incorporated by reference.
Industrial Applicability
As described above, the mobile communication method, radio base station and upper node according to the present invention are beneficial in radio communications, such as mobile communications, since, as described above, the present invention can provide a mobile communication method, radio base station and upper node which are able to reduce a handover delay by allowing a target handover radio base station, eNB2, use an UE Context maintained by a handover source radio base station, eNB, in handover.
7 sheets
Sheet 1 Sheet 2 Sheet 3 Sheet 4 Sheet 5 Sheet 6 Sheet 7
20 members in 11 offices
Priority claims9
| Document | Office | Kind | Date |
|---|---|---|---|
| 2007061090 | Japan | – | |
| 2007061090 | Japan | A | |
| 2007061090 | Japan | A | |
| 2008054127 | Japan | W | |
| 2008054127 | Japan | W | |
| 2007061090 | – | – | – |
| 2008054127 | – | – | – |
| JP20070061090 | – | – | – |
| WO2008JP54127 | – | – | – |
Members20
| Document | Office | Kind | |
|---|---|---|---|
| AU2008225556A1 | Australia | A1 | |
| CA2680232A1 | Canada | A1 | |
| WO2008111502A1 | World Intellectual Property Organization (WIPO) | A1 | |
| JP2008227772A | Japan | A | |
| MX2009009661A | Mexico | A | |
| EP2134104A1 | European Patent Office (EPO) | A1 | |
| KR20090129436A | Republic of Korea | A | |
| CN101647309A | China | A | |
| US2010113022A1 | United States of America | A1 | |
| JP4548851B2 | Japan | B2 | |
| RU2009136219A | Russian Federation | A | |
| US8208923B2 | United States of America | B2 | |
| RU2474978C2 | Russian Federation | C2 | |
| CN101647309B | China | B | |
| AU2008225556B2 | Australia | B2 | |
| EP2134104A4 | European Patent Office (EPO) | A4 | |
| BRPI0808710A2This record | Brazil | A2 | |
| KR101468954B1 | Republic of Korea | B1 | |
| CA2680232C | Canada | C | |
| BRPI0808710B1 | Brazil | B1 |
5 legal events, as the office reported them to INPADOC
Over the term
Point at a mark for the eventEvents
| Event | Code | |
|---|---|---|
| Patent or certificate of addition of invention granted [chapter 16.1 patent gazette]GrantedPRAZO DE VALIDADE: 10 (DEZ) ANOS CONTADOS A PARTIR DE 24/09/2020, OBSERVADAS AS CONDICOES LEGAIS.B16A | B16A | |
| Decision: intention to grant [chapter 9.1 patent gazette]B09A | B09A | |
| Preliminary requirement: requests with searches performed by other patent offices: procedure suspended [chapter 6.21 patent gazette]B06U | B06U | |
| Others concerning applications: alteration of classificationAS CLASSIFICACOES ANTERIORES ERAM: H04W 36/12 , H04W 36/10B15K | B15K | |
| Objections, documents and/or translations needed after an examination request according [chapter 6.6 patent gazette]B06F | B06F |
Numbers
- Publication
- PI0808710
- Publication, DOCDB
- PI0808710
- Publication, EPODOC
- BRPI0808710
- Application
- 8710
- Application, DOCDB
- PI0808710
- Application, EPODOC
- BR2008PI08710
Titles2
- Portuguese
- MÉTODO DE COMUNICAÇÃO MÓVEL, ESTAÇÃO BASE DE RÁDIO E NÓ DE NÍVEL SUPERIOR
- English
- MOBILE COMMUNICATION METHOD, RADIO BASE STATION AND HIGH LEVEL NODE
Classification
- CPC, 8
- H04W36/0033
- H04W36/08
- H04W36/02
- H04W36/12
- H04W36/0064
- H04W92/20
- H04W36/083
- Y02D30/70
- IPC, 2
- H04W36 12
- H04W36 10
