CN102333330B

CN102333330B - Information indication and gateway selection methods, system and equipment

Info

Publication number: CN102333330B
Application number: CN2011103299990A
Authority: CN
Inventors: 焦斌
Original assignee: China Academy of Telecommunications Technology CATT
Current assignee: China Academy of Telecommunications Technology CATT; Datang Mobile Communications Equipment Co Ltd
Priority date: 2011-10-26
Filing date: 2011-10-26
Publication date: 2013-11-20
Anticipated expiration: 2031-10-26
Also published as: WO2013060164A1; CN102333330A

Abstract

The embodiment of the invention discloses an information indication method, a gateway selection method, a system and equipment, which relate to the technical field of wireless communication and are used for solving the problem that the optimizing performance of a downlink data routing path of a terminal under a Mobile Relay cannot be ensured. In the invention, a relay user equipment mobility management entity (Relay-UE MME) or an operation and maintenance (OAM) system transmits the information of a packet data network gateway (PGW) of the Mobile Relay and the capability indication information of a serving gateway (SGW) to the Mobile Relay; the Mobile Relay transmits the received information to a User-UE MME; and the User-UE MME selects the PGW as an SGW of the terminal accessing the Mobile Relay. By the methods, the system and the equipment, the optimizing performance of the downlink data routing path can be ensured.

Description

Information indication and method for selecting gateway, system and equipment

Technical field

The present invention relates to wireless communication field, relate in particular to a kind of information indication and method for selecting gateway, system and equipment.

Background technology

In prior art, be that terminal (UE) selects the main position current according to UE of gateway (SGW) and the topological relation of network, thereby guarantee always to optimize to the route of the current serving BS of UE for SGW that current UE is served.

Network is that UE selects the scheme of SGW as follows:

Network is that UE selects the current position of SGW main reference UE, as shown in Figure 1, the SGW1 of core net website (Core Network site) 1 is connected with the base station of base station site (Base station site) 1/2/3, the SGW2 of Core Network site2 is connected with the base station of Base station site4/5/6, movement along with UE, the serving BS of UE constantly changes, outside UE moves out the device service zone of Core Network site1, network will continue to provide service for UE selects the equipment SGW2 of Core Network site2.

The downlink data routed path of UE is: packet data network (PDN GW)-〉 SGW-〉Base station-〉UE, as shown in Figure 1, along with the movement of UE, the downlink data routed path of UE also changes thereupon.

After mobile relay equipment (Mobile Relay) is introduced, system architecture diagram as shown in Figure 2, wherein Mobile Relay has given respectively double identity in double network, at first in the network of junction network unit (Relay Network Element) composition (network that the equipment that is 1 by label forms), Mobile Relay works as common UE in network; And in the network that terminal network unit (UE Network Element) forms (network that the equipment that is 2 by label forms), Mobile Relay works as base station (eNB) in network.

As shown in Figure 2, the aspect of the network that forms from Relay Network Element, therefore Mobile Relay carrys out work as common UE, and along with the movement of Mobile Relay, the serving BS of Mobile Relay is that donor base station (Donor eNB) and SGW are in continuous change.

On the other hand, the aspect of the network that forms from UE network element, Mobile Relay works as eNB, in fact and do not know that Mobile Relay is special base station and under Mobile Relay, real user UE (User-UE), does not know that Mobile Relay is moving yet.

After Mobile Relay introduces, the downlink data routed path of User-UE is: user terminal packet data gateway (User-UE PGW)-〉 subscriber terminal service gateway (User-UE SGW)-〉 link terminal packet data gateway (Relay-UE PGW)-〉 link terminal gateway (Relay-UE SGW)-〉 Donor eNB-〉Mobile Relay-〉User-UE, wherein the transmission path of downlink data can moving and change with Mobile Relay.

In realizing process of the present invention, the inventor finds in prior art to exist following technical problem:

In prior art, before introducing Mobile Relay, network is that UE selects SGW usually from topology of networks, to consider, thereby guarantees what eNB itself always optimized to the route between SGW.After but Mobile Relay introduces, movement along with Mobile Relay itself, topology of networks also will change thereupon, so prior art can not guarantee that network is the SGW (being User-UE SGW) that selects of the UE (being User-UE) under Mobile Relay and remains optimization to the route of Mobile Relay.

Summary of the invention

The embodiment of the present invention provides a kind of information indication and method for selecting gateway, system and equipment, be used for to solve the problem that the optimization of the downlink data routed path of the UE under Mobile Relay can not be guaranteed.

A kind of method for selecting gateway, the method comprises:

Link terminal Mobility Management Entity Relay-UE MME receives and asks or packet data network PDN connection request adhering to of mobile relay equipment Mobile Relay transmission;

Described Relay-UE MME determines to support simultaneously the entity device of packet data gateway PGW function and gateway SGW function, and selects the PGW of this entity device as this Mobile Relay;

Wherein, described Relay-UE MME determines to support simultaneously the entity device of PGW function and SGW function, specifically comprise: described Relay-UE MME is retrieved as the information of the pre-configured PGW of described Mobile Relay from the CAMEL-Subscription-Information of local or described Mobile Relay, the information of this PGW comprises sign and/or the address information of PGW, and this PGW is for supporting simultaneously the entity device of PGW function and SGW function; And select the PGW of this PGW as this Mobile Relay; Perhaps, described Relay-UE MME, by nslookup service system DNS, obtains SGW Query Result list and PGW the results list; Determine to appear at simultaneously the device identification in this SGW Query Result list and PGW the results list, the gateway device that this device identification is corresponding is defined as supporting simultaneously the entity device of PGW function and SGW function.

A kind of information indicating method, the method comprises:

Operation and maintenance system OAM receives the configuration request message that mobile relay equipment Mobile Relay sends;

Described OAM sends to described Mobile Relay with the configuration information of described Mobile Relay, be included as information and the gateway SGW capability indication information of the packet data gateway PGW of described Mobile Relay configuration in this configuration information, the information of this PGW comprises sign and/or the address information of PGW, this PGW supports the SGW function for supporting simultaneously the entity device of PGW function and SGW function, this SGW capability indication information to be used to indicate this PGW.

A kind of information indicating method, the method comprises:

Information and the gateway SGW capability indication information of the packet data gateway PGW of this Mobile Relay that mobile relay equipment Mobile Relay reception link terminal Mobility Management Entity Relay-UE MME or operation and maintenance system OAM send, the information of this PGW comprises sign and/or the address information of PGW, and this SGW capability indication information is used to indicate this PGW and supports the SGW function;

Described Mobile Relay in the S1 interface of initiating is set up process or S1 interface renewal process, sends to user terminal Mobility Management Entity User-UEMME with the information of described PGW and SGW capability indication information; Perhaps, described Mobile Relay after receiving the access request that terminal sends,, by the terminal up S1 Application of Interface S1AP message of being correlated with, sends to User-UE MME with the information of described PGW and SGW capability indication information.

A kind of method for selecting gateway, the method comprises:

Information and the gateway SGW capability indication information of the packet data gateway PGW of this Mobile Relay that user terminal Mobility Management Entity User-UE MME reception mobile relay equipment Mobile Relay sends, the information of this PGW comprises sign and/or the address information of PGW, and this SGW capability indication information is used to indicate this PGW and supports the SGW function; Preserve the address information of this PGW and the incidence relation of SGW capability indication information and described Mobile Relay;

Described User-UE MME determines that according to described incidence relation described PGW supports the SGW function, and selects the SGW of this PGW as the terminal of this Mobile Relay of access;

Wherein, information and the SGW capability indication information of the PGW of this Mobile Relay that described User-UE MME reception Mobile Relay sends comprise: described User-UE MME in the S1 interface that described Mobile Relay initiates is set up process or S1 interface renewal process, receives information and the SGW capability indication information of described PGW; Perhaps, described User-UE MME, by the relevant up S1AP message of terminal that described Mobile Relay sends, receives information and the SGW capability indication information of described PGW.

A kind of link terminal Mobility Management Entity Relay-UE MME, this Relay-UE MME comprises:

Receiving element, be used for receiving and ask or packet data network PDN connection request adhering to of mobile relay equipment Mobile Relay transmission;

Selected cell, be used for determining to support simultaneously the entity device of packet data gateway PGW function and gateway SGW function, and select the PGW of this entity device as this Mobile Relay;

Wherein, described selected cell determines to support simultaneously the entity device of PGW function and SGW function, specifically comprise: the information that is retrieved as the pre-configured PGW of described Mobile Relay from the CAMEL-Subscription-Information of local or described Mobile Relay, the information of this PGW comprises sign and/or the address information of PGW, and this PGW is for supporting simultaneously the entity device of PGW function and SGW function; And select the PGW of this PGW as this Mobile Relay; Perhaps,, by nslookup service system DNS, obtain SGW Query Result list and PGW the results list; Determine to appear at simultaneously the device identification in this SGW Query Result list and PGW the results list, the gateway device that this device identification is corresponding is defined as supporting simultaneously the entity device of PGW function and SGW function.

A kind of operation and maintenance system OAM, this OAM comprises:

Receiving element, be used for receiving the configuration request message that mobile relay equipment Mobile Relay sends;

Transmitting element, be used for the configuration information of described Mobile Relay is sent to described Mobile Relay, be included as information and the gateway SGW capability indication information of the packet data gateway PGW of described Mobile Relay configuration in this configuration information, the information of this PGW comprises sign and/or the address information of PGW, this PGW supports the SGW function for supporting simultaneously the entity device of PGW function and SGW function, this SGW capability indication information to be used to indicate this PGW.

A kind of mobile relay equipment Mobile Relay, this Mobile Relay comprises:

Receiving element, be used for to receive information and the gateway SGW capability indication information of the packet data gateway PGW of this Mobile Relay that link terminal Mobility Management Entity Relay-UE MME or operation and maintenance system OAM send, the information of this PGW comprises sign and/or the address information of PGW, and this SGW capability indication information is used to indicate this PGW and supports the SGW function;

Transmitting element, be used for setting up process or S1 interface renewal process at the S1 interface of initiating, and the information of described PGW and SGW capability indication information are sent to user terminal Mobility Management Entity User-UE MME; Perhaps, after receiving the access request that terminal sends, by the terminal up S1 Application of Interface S1AP message of being correlated with, the information of described PGW and SGW capability indication information are sent to User-UE MME.

A kind of user terminal Mobility Management Entity User-UE MME, this User-UE MME comprises:

Receiving element, be used for to receive information and the gateway SGW capability indication information of the packet data gateway PGW of this Mobile Relay that mobile relay equipment Mobile Relay sends, the information of this PGW comprises sign and/or the address information of PGW, and this SGW capability indication information is used to indicate this PGW and supports the SGW function; Preserve the address information of this PGW and the incidence relation of SGW capability indication information and described Mobile Relay;

Selected cell, be used for determining that according to described incidence relation described PGW supports the SGW function, and select the SGW of this PGW as the terminal of this Mobile Relay of access;

Wherein, information and the SGW capability indication information of the PGW of this Mobile Relay that described receiving element reception Mobile Relay sends, specifically comprise: in the S1 interface that described Mobile Relay initiates is set up process or S1 interface renewal process, receive information and the SGW capability indication information of described PGW; Perhaps,, by the relevant up S1AP message of terminal that described Mobile Relay sends, receive information and the SGW capability indication information of described PGW.

A kind of wireless communication system, this system comprises:

Link terminal Mobility Management Entity Relay-UE MME, be used for receiving and ask or packet data network PDN connection request adhering to of mobile relay equipment Mobile Relay transmission, determine to support simultaneously the entity device of packet data gateway PGW function and gateway SGW function, and select the PGW of this entity device as this Mobile Relay; , with the information of described PGW and SGW capability indication information, send to described Mobile Relay; Described SGW capability indication information is used to indicate described PGW and supports the SGW function;

Mobile Relay, be used for setting up process or S1 interface renewal process at the S1 interface of initiating, and information and the SGW capability indication information of the described PGW that receives are sent to user terminal Mobility Management Entity User-UE MME; Perhaps, after receiving the access request that terminal sends, by the terminal up S1 Application of Interface S1AP message of being correlated with, information and the SGW capability indication information of the described PGW that receives are sent to User-UE MME;

User-UE MME, for information and the SGW capability indication information of the PGW that receives described Mobile Relay transmission; Preserve the address information of this PGW and the incidence relation of SGW capability indication information and described Mobile Relay; Determine that according to described incidence relation described PGW supports the SGW function, and select the SGW of this PGW as the terminal of this Mobile Relay of access;

Wherein, described Relay-UE MME determines to support simultaneously the entity device of packet data gateway PGW function and gateway SGW function, specifically comprise: the information that is retrieved as the pre-configured PGW of described Mobile Relay from the CAMEL-Subscription-Information of local or described Mobile Relay, the information of this PGW comprises sign and/or the address information of PGW, and this PGW is for supporting simultaneously the entity device of PGW function and SGW function; Perhaps,, by nslookup service system DNS, obtain SGW Query Result list and PGW the results list; Determine to appear at simultaneously the device identification in this SGW Query Result list and PGW the results list, the gateway device that this device identification is corresponding is defined as supporting simultaneously the entity device of PGW function and SGW function;

Described User-UE MME receives information and the SGW capability indication information of the PGW of described Mobile Relay transmission, specifically comprise: in the S1 interface that described Mobile Relay initiates is set up process or S1 interface renewal process, receive information and the SGW capability indication information of described PGW; Perhaps,, by the relevant up S1AP message of terminal that described Mobile Relay sends, receive information and the SGW capability indication information of described PGW.

A kind of wireless communication system, this system comprises:

Link terminal Mobility Management Entity Relay-UE MME, be used for receiving and ask or packet data network PDN connection request adhering to of mobile relay equipment Mobile Relay transmission, determine to support simultaneously the entity device of packet data gateway PGW function and gateway SGW function, and select the PGW of this entity device as this Mobile Relay;

Operation and maintenance system OAM, be used for receiving the configuration request message that Mobile Relay sends; The configuration information of described Mobile Relay is sent to described Mobile Relay, be included as information and the SGW capability indication information of the PGW of described Mobile Relay configuration in this configuration information, this PGW is for supporting simultaneously the entity device of PGW function and SGW function, and this PGW and described Relay-UE MME are that the PGW of this Mobile Relay selection is identical; This SGW capability indication information is used to indicate this PGW and supports the SGW function;

Wherein, described Relay-UE MME determines to support simultaneously the entity device of packet data gateway PGW function and gateway SGW function, specifically comprise: the information that is retrieved as the pre-configured packet data gateway PGW of described Mobile Relay from the CAMEL-Subscription-Information of local or described Mobile Relay, the information of this PGW comprises sign and/or the address information of PGW, and this PGW is for supporting simultaneously the entity device of PGW function and gateway SGW function; Perhaps,, by nslookup service system DNS, obtain SGW Query Result list and PGW the results list; Determine to appear at simultaneously the device identification in this SGW Query Result list and PGW the results list, the gateway device that this device identification is corresponding is defined as supporting simultaneously the entity device of PGW function and SGW function;

in the scheme that the embodiment of the present invention provides, network side is that the PGW(that Mobile Relay selects is Relay-UE PGW) and the SGW(that selects for the UE of access Mobile Relay be User-UE SGW), be positioned at same entity device, so, downlink data routed path at this UE: User-UE PGW-〉User-UE SGW-〉Relay-UE PGW-〉Relay-UE SGW-〉Donor eNB-〉Mobile Relay-〉in User-UE, User-UE SGW is almost nil to the transmission range of Relay-UE PGW, make the optimization of the downlink data routed path of UE be guaranteed.

Description of drawings

Fig. 1 is the selection schematic diagram of SGW of the prior art;

Fig. 2 be in prior art User-UE with the moving process schematic diagram of Mobile Relay;

The method flow schematic diagram that Fig. 3 provides for the embodiment of the present invention;

The other method schematic flow sheet that Fig. 4 provides for the embodiment of the present invention;

The method flow schematic diagram again that Fig. 5 provides for the embodiment of the present invention;

The another method flow schematic diagram that Fig. 6 provides for the embodiment of the present invention;

Fig. 7 A is the schematic flow sheet of the embodiment of the present invention one;

Fig. 7 B is the schematic flow sheet of the embodiment of the present invention two;

Fig. 7 C is the schematic flow sheet of the embodiment of the present invention three;

Fig. 7 D is the schematic flow sheet of the embodiment of the present invention four;

Fig. 7 E is the schematic flow sheet of the embodiment of the present invention five;

The system configuration schematic diagram that Fig. 8 A provides for the embodiment of the present invention;

Another system configuration schematic diagram that Fig. 8 B provides for the embodiment of the present invention;

The device structure schematic diagram that Fig. 9 provides for the embodiment of the present invention;

Another device structure schematic diagram that Figure 10 provides for the embodiment of the present invention;

The another device structure schematic diagram that Figure 11 provides for the embodiment of the present invention.

Embodiment

optimization for the downlink data routed path that can guarantee the UE under mobile relay equipment (Mobile Relay), the embodiment of the present invention provides a kind of information indication and method for selecting gateway, in this method, link terminal Mobility Management Entity (Relay-UE MME) is in network attachment that Mobile Relay initiates or packet data network (PDN) connect and set up process, the entity device of selecting to support simultaneously packet data gateway (PGW) function and gateway (SGW) function is link terminal packet data gateway (Relay-UE PGW) as the PGW of this Mobile Relay, and the information of this PGW and SGW capability indication information are sent to Mobile Relay, Mobile Relay sends to User-UE MME with the information of this PGW and SGW capability indication information again, User-UE MME determines that according to the information that receives this PGW supports the SGW function, and selects this PGW as subscriber terminal service gateway User-UE SGW, i.e. the SGW of the terminal of this Mobile Relay of conduct access.Perhaps,

The information of the PGW of pre-configured Mobile Relay in Relay-UE MME/HSS and OAM in advance, this PGW supports the entity device of PGW function and SGW function simultaneously, and will guarantee that the information that configures in Relay-UE MME/HSS and OAM is consistent.So, Relay-UE MME in network attachment that Mobile Relay initiates or PDN connect and set up process, is that Mobile Relay selects PGW according to configuration information.OAM after receiving the configuration request message that Mobile Relay sends, will comprise that the information of PGW of pre-configured Mobile Relay and the configuration information of SGW capability indication information send to Mobile Relay; Mobile Relay sends to User-UE MME with the information of this PGW and SGW capability indication information again; User-UE MME determines that according to the information that receives this PGW supports the SGW function, and selects this PGW as User-UE SGW, i.e. the SGW of the terminal of this Mobile Relay of conduct access.

Referring to Fig. 3, the method for selecting gateway of the Relay-UE MME side that provides for the embodiment of the present invention comprises the following steps:

Step 30:Relay-UE MME receives and asks or the PDN connection request adhering to of Mobile Relay transmission at Mobile Relay;

Step 31:Relay-UE MME determines to support simultaneously the entity device of PGW function and SGW function, and selects the PGW of this entity device as this Mobile Relay.

As a kind of execution mode, in step 31, Relay-UE MME determines to support simultaneously the entity device of PGW function and SGW function, and its specific implementation can be as follows:

Relay-UE MME, by nslookup service system (DNS), obtains SGW Query Result list and PGW the results list; Determine to appear at simultaneously the device identification in this S-GW Query Result list and P-GW the results list, the gateway device that this device identification is corresponding is defined as supporting simultaneously the entity device of PGW function and SGW function.

Accordingly, after step 31, Relay-UE MME can, with information and the SGW capability indication information of the PGW of selection, send to Mobile Relay; This SGW capability indication information is used to indicate this PGW and supports the SGW function.Concrete:

If Relay-UE MME receives the request of adhering to that Mobile Relay sends in step 30, Relay-UE MME, by adhering to acceptance (Attach Accept) message, sends to Mobile Relay with the information of PGW and SGW capability indication information;

If Relay-UE MME receives the PDN connection request that Mobile Relay sends in step 30, Relay-UE MME gives tacit consent to evolved packet system bearer context request (ACTIVATE DEFAULT EPS BEARER CONTEXT REQUEST) message by activation, and the information of PGW and SGW capability indication information are sent to Mobile Relay.

Further, when Relay-UE MME was Mobile Relay selection PGW in step 31, Relay-UE MME can also be that this Mobile Relay selects SGW; So, after step 31 and before Relay-UE MME sends Attach Accept or ACTIVATE DEFAULT EPS BEARER CONTEXT REQUEST message to Mobile Relay, SGW and PGW that Relay-UE MME can triggering selection are that Mobile Relay sets up bearer context.

As another kind of execution mode, in step 31, Relay-UE MME determines to support simultaneously the entity device of PGW function and SGW function, and its specific implementation can be as follows:

Relay-UE MME is retrieved as the information of the pre-configured PGW of this Mobile Relay from the CAMEL-Subscription-Information of this locality or Mobile Relay, this PGW is for supporting simultaneously the entity device of PGW function and SGW function; And select the PGW of this PGW as this Mobile Relay.Sign and/or the address information that can comprise PGW here, for the information of the pre-configured PGW of this Mobile Relay; The CAMEL-Subscription-Information of Mobile Relay can be kept in home signature user server (HSS).

Further, when Relay-UE MME was Mobile Relay selection PGW in step 31, Relay-UE MME can also be that this Mobile Relay selects SGW; So, after step 31, SGW and PGW that Relay-UE MME can triggering selection are that Mobile Relay sets up bearer context.Then, Relay-UE MME returns to Attach Accept or ACTIVATE DEFAULT EPS BEARER CONTEXT REQUEST message to Mobile Relay.

It is as follows that the SGW of Relay-UE MME triggering selection and PGW are that Mobile Relay sets up the step of bearer context:

Relay-UE MME sends conversation establishing request (Creat Session Request) to the SGW that selects, this SGW sends to Creat Session Request the PGW of selection, this PGW is after Mobile Relay sets up bearer context, return to conversation establishing response (Creat Session Response) to this SGW, this SGW sends to Relay-UE MME with Creat Session Response.

Referring to Fig. 4, the information indicating method of the OAM side that provides for the embodiment of the present invention comprises the following steps:

Step 40:OAM receives configuration request (Configuration Request) message that Mobile Relay sends;

Step 41:OAM sends to this Mobile Relay with the configuration information of Mobile Relay, be included as information and the SGW capability indication information of the PGW of this Mobile Relay configuration in this configuration information, this PGW supports the SGW function for supporting simultaneously the entity device of PGW function and SGW function, this SGW capability indication information to be used to indicate this PGW.

Referring to Fig. 5, the information indicating method of the Mobile Relay side that provides for the embodiment of the present invention comprises the following steps:

Information and the SGW capability indication information of the PGW of this Mobile Relay that step 50:Mobile Relay reception Relay-UE MME or OAM send, this SGW capability indication information is used to indicate this PGW and supports the SGW function;

The information of the PGW that step 51:Mobile Relay will receive and SGW capability indication information, send to User-UE MME.

In step 51, Mobile Relay can in the S1 interface of initiating is set up process or S1 interface renewal process, send to User-UE MME with the address information of PGW and SGW capability indication information; Perhaps,

Mobile Relay after receiving the access request that terminal sends,, by terminal up S1 Application of Interface (S1AP) message of being correlated with, sends to User-UE MME with the information of PGW and SGW capability indication information.Here, access request can be terminal when initiating initial access or in the process of incision Mobile Relay residential quarter, the access request of transmission.

If Mobile Relay is in the S1 interface of initiating is set up process or S1 interface renewal process, the information of PGW and SGW capability indication information are sent to User-UE MME, after the information and SGW capability indication information that send this PGW, Mobile Relay is when the access request that receiving terminal sends, to the relevant up S1AP message of User-UE MME transmitting terminal, to notify this terminal by this Mobile Relay access network to User-UE MME.

The S1 interface is the logic interfacing of setting up between wireless access network node and core net node, specifically is divided into again chain of command interface (S1-MME) and interface in the user plane (S1-U).S1-MME is the logic interfacing of setting up between wireless access network node and MME, is used for transmission chain of command signaling (the signaling particular content is referring to 3GPP TS36.413).S1-U is the logic interfacing of setting up between wireless access network node and SGW, is used for transmission user face data (the user face data packet format is referring to 3GPP TS29.281).

Referring to Fig. 6, the method for selecting gateway of the User-UE MME side that provides for the embodiment of the present invention comprises the following steps:

Information and the SGW capability indication information of the PGW of this Mobile Relay that step 60:User-UE MME reception Mobile Relay sends, this SGW capability indication information is used to indicate this PGW and supports the SGW function; Preserve the address information of this PGW and the incidence relation of SGW capability indication information and this Mobile Relay;

Step 61:User-UE MME determines that according to the incidence relation of preserving this PGW supports the SGW function, and selects this PGW as User-UE SGW, namely selects the SGW of this PGW as the terminal of access Mobile Relay.

Concrete, in step 60, User-UE MME can in the S1 interface that Mobile Relay initiates is set up process or S1 interface renewal process, receive address information and the SGW capability indication information of PGW; In step 61, User-UE MME after the follow-up terminal that receives Mobile Relay transmission is correlated with up S1AP message, determines that according to described incidence relation this PGW supports the SGW function, and selects this PGW as User-UE SGW; Perhaps,

In step 60, User-UE MME, by the relevant up S1AP message of terminal that Mobile Relay sends, receives address information and the SGW capability indication information of PGW; In step 61, User-UE MME after receiving the relevant up S1AP message of this terminal, determines that according to described incidence relation this PGW supports the SGW function, and selects this PGW as User-UE SGW.

Further, User-UE MME can also be with the address information of the address information in the information of the PGW that receives as the SGW of the terminal of this Mobile Relay of access after step 61, and according to this address information, to this SGW, send the session establishment request, if this SGW can provide service for UE, to User-UE MME, return to the session establishment response, with notice User-UE MME session establishment.

Below the present invention is specifically described:

Main thought of the present invention: according to background technology, can find out, during from Mobile Relay access network, the downlink data routed path of UE is: User-UE PGW-as UE〉User-UE SGW-〉Relay-UE PGW-〉Relay-UE SGW-〉Donor eNB-〉Mobile Relay-〉User-UE.The present invention mainly solves problem how to optimize User-UE SGW and Relay-UE PGW route, namely realizes User-UE SGW function and Relay-UE PGW function are chosen on same entity device.

, for realizing that User-UE SGW function and Relay-UE PGW function are chosen on same entity device, at network, be at first that when Relay-UE selects PGW, network need to select one to support that simultaneously the equipment of PGW and SGW is Relay-UE PGW.For embodiment 1, Mobile Relay is in being attached to network development process or in initiation PDN connection procedure, be that Mobile Relay selects Relay-UE PGW by Relay-UE MME, therefore Relay-UE MME need to select one to support simultaneously the equipment of PGW and SGW function to carry Relay-UE PGW function for Mobile Relay as far as possible, and Relay-UE MME indicates the address information of Relay-UE PGW and Relay-UE PGW to send to Mobile Relay to the support of SGW function in addition.For embodiment 2, because Relay-UE PGW configures for Mobile Relay in advance, therefore can be in for Mobile Relay, shifting to an earlier date the process of pre-configured Relay-UE PGW, operator can select one to support simultaneously the equipment of PGW and SGW function to carry the Relay-UEPGW function.

in embodiment 1 and embodiment 2, when UE is linked in network development process by Mobile Relay, Mobile Relay is with Relay-UE PGW address information, and Relay-UE PGW sends to the equipment of the core network User-UE MME of UE to the capability indication information of SGW function support, User-UE MME judges Relay-UE PGW according to Relay-UE PGW to the capability indication information of SGW function support and supports the SGW function, User-UE MME selects Relay-UE PGW simultaneously as User-UE SGW, and with the address information of Relay-UE PGW address information as User-UE SGW.According to User-UE SGW address information, User-UE MME sets up request process to User-UE SGW initiation session.

In embodiment 1, at Mobile Relay, be attached to network or initiate during PDN connects and set up process, network sends to Mobile Relay with Relay-UE PGW address and the indication of SGW ability.From Mobile Relay access procedure, Mobile Relay sends to User-UE MME with Relay-UE PGW address information and the indication of SGW ability at User-UE, and auxiliary User-UE MME is that User-UE carries out the User-UESGW selection.

Mobile Relay is attached in network development process, and perhaps Mobile Relay initiation PDN connection is set up in process, and Mobile Relay indicates process as shown in Figure 7 A from Relay-UE MME acquisition Relay-UE PGW address information and SGW ability:

Step 1.Mobile Relay sets up with Radio Resource control (RRC) signaling of DeNB and is connected.RRC signaling establishment of connection details can, referring to 3GPP TS 36.331, not describe in detail here.

The Attach process that step 2. is initiated for Mobile Relay, the RRC signaling that establishes by step 1 connects, and Mobile Relay sends to DeNB with Attach Request message, and DeNB directly passes through Relay-UE MME with Attach Request message.

Step 2a. sets up process for the PDN connection that Mobile Relay initiates, and Mobile relay sends to DeNB with PDN Connectivity Request message, and DeNB passes through Relay-UE MME with PDN Connectivity Request message.

Wherein be connected the process of foundation with PDN be two independently processes to the Attach process, only has a process simultaneously and carries out, and both can not occur simultaneously.Also namely, only can perform step 2 and step 2a in one.

Step 3.Relay-UE MME position current according to Mobile Relay information, for Mobile Relay selects Relay-UE SGW and Relay-UE PGW.Relay-UE MME selects an entity device of supporting simultaneously PGW function and SGW function when for Mobile Relay, selecting Relay-UE PGW.

Step 4.Relay-UE MME sends conversation establishing request (Creat Session Request) to this Relay-UE SGW;

Step 4a.Relay-UE SGW sends to this Relay-UE PGW with Creat Session Request;

Step 5a.Relay-UE PGW is after Mobile Relay sets up bearer context, to this Relay-UE SGW, returns to conversation establishing response (Creat Session Response);

Step 5.Relay-UE SGW sends to Relay-UE MME with Creat Session Response;

The Attach process that step 6. is initiated for Mobile Relay, Relay-UE MME, by Attach Accept message, will send to Mobile Relay for Relay-UE PGW address information and the indication of SGW ability that Mobile Relay selects;

Step 6a. connects for the PDN that Mobile Relay initiates the process of setting up, Relay-UE MME, by ACTIVATE DEFAULT EPS BEARER CONTEXT REQUEST message, will send to Mobile Relay for Relay-UE PGW address information and the indication of SGW ability that Mobile Relay selects.

Step 6 and step 6a also only can carry out one of them.

Mobile Relay sends to User-UE MME with Relay-UE PGW address information and the indication of SGW ability by up S1 interface foundation/S1 interface updating message, for the UE from the initial access of Mobile Relay or by being switched to the UE of Mobile Relay residential quarter, the Relay-UE PGW address information of receiving in the S1 interface foundation/S1 interface renewal process of User-UE MME according to Mobile Relay initiation and SGW ability are designated as above-mentioned UE and select SGW, and detailed process as shown in Figure 7 B.

Step 0. is in the S1 interface foundation/renewal process that Mobile Relay initiates, if Relay-UE PGW supports the SGW function simultaneously, Relay-UE PGW address and SGW capability indication information that Mobile Relay will obtain before send to User-UE MME.

Step 1. is in the initial access process or UE incision Mobile Relay residential quarter process that UE initiates, and UE initiates the access procedure to Mobile Relay.

Step 2.Mobile Relay sends the relevant up S1AP message of UE to User-UE MME, so that notice User-UE MME:UE is current, from Mobile Relay, is linked into network.

Step 3.User-UE MME is according to receiving and local Relay-UE PGW address information of preserving and the indication of SGW ability from Mobile Relay in step 0, judge Relay-UE PGW and support the SGW function, User-UE MME selects Relay-UE PGW simultaneously as User-UE SGW, and with the address information of Relay-UE PGW address information as User-UE SGW.

Step 4.User-UE MME, according to the address information of the User-UE SGW of step 3 acquisition, sets up request to User-UE SGW initiation session.

If step 5. User-UE SGW can provide service for UE, User-UE SGW returns to the session establishment response message to User-UE MME, with notice User-UE MME session establishment, completes.

Except by up S1 interface foundation/S1 interface updating message mode, Mobile Relay also can send to User-UE MME with the SGW capability indication information by the relevant up S1AP message of UE with Relay-UE PGW address, for the UE from the initial access of Mobile Relay or by being switched to the UE of Mobile Relay residential quarter, Relay-UE PGW address and SGW capability indication information in MME up S1AP message relevant according to the UE that receives, select for the UE that relates in the relevant up S1AP message of UE carries out SGW, detailed process is as shown in Fig. 7 C:

Step 2.Mobile Relay sends the relevant up S1AP message of UE to User-UE MME, so that notice User-UE MME:UE is current, from Mobile Relay, is linked into network.Here, Mobile Relay need to be carried at the Relay-UE PGW address that obtains before in the relevant up S1AP message of UE and send to User-UE MME with the SGW capability indication information.

The capability indication information that step 3.User-UE MME supports the SGW function according to the Relay-UE PGW that obtains in step 2, judge Relay-UE PGW and support the SGW function, User-UE MME selects Relay-UE PGW simultaneously as User-UE SGW, and with the address information of Relay-UE PGW address information as User-UE SGW.

In embodiment 2, network is the pre-configured Relay-UE PGW of Mobile Relay, and in Mobile Relay was attached to network development process, according to the CAMEL-Subscription-Information of Mobile Relay, network was that Mobile Relay selects fixing Relay-UE PGW on the one hand.In Mobile Relay start-up course, network management system will send to Mobile Relay for Relay-UE PGW address and the SGW capability indication information of Mobile Relay fixed configurations on the other hand.From Mobile Relay access procedure, Mobile Relay sends to User-UE MME with Relay-UE PGW information as User-UE, take auxiliary User-UE MME, as User-UE carries out gateway, selects.

Mobile Relay is attached in network development process, perhaps Mobile Relay initiation PDN connection is set up in process, according to the subscription data information in HSS or the local Mobile Relay PGW information of preserving of Relay-UE MME, Relay-UE MME is that Mobile Relay selects Relay-UE PGW, because Relay-UE PGW is pre-configured, therefore can guarantee that Relay-UE PGW supports the SGW function simultaneously, detailed process is as shown in Fig. 7 D:

Step 0. operator will be configured to Relay-UE MME or be configured in the subscription data of HSS preservation for Relay-UE PGW sign and the address information of Mobile Relay fixed configurations.The Relay-UEPGW of configuration supports PGW and SGW function simultaneously.

Step 1.Mobile Relay sets up and is connected with the RRC signaling of DeNB.RRC signaling establishment of connection details can, referring to 3GPP TS 36.331, not describe in detail here.

The Attach process that step 2. is initiated for Mobile Relay, the RRC signaling that establishes by step 1 connects, Mobile Relay sends to DeNB with Attach Request message, and DeNB directly passes through Relay-UE MME with Attach Request message.

Step 2a. sets up process for the PDN connection that Mobile Relay initiates, and Mobile relay sends to DeNB with PDNconnectivity request message, and DeNB passes through Relay-UE MME with PDN connectivity request message.

Step 3.Relay-UE MME is according to the CAMEL-Subscription-Information of preserving in HSS or local Mobile Relay PGW sign or the address information of preserving of Relay-UE MME, for Mobile Relay selects Relay-UE PGW.

Step 4a.Relay-UE SGW sends to this Relay-UE PGW with Creat Session Request;

Step 5.Relay-UE SGW sends to Relay-UE MME with Creat Session Response;

The Attach process that step 6. is initiated for Mobile Relay, Relay-UE MME returns to Attach Accept message to Mobile Relay;

Step 6a. sets up process for the PDN connection that Mobile Relay initiates, and Relay-UE MME returns to ACTIVATE DEFAULT EPS BEARER CONTEXT REQUEST message to Mobile Relay.

Step 6 and step 6a also only can carry out one of them.

Before Mobile Relay entered operating state as base station, at first Mobile Relay initiated the connection procedure to OAM, and to OAM request configuration information.OAM shifts to an earlier date ready configuration information according to the sign (ID) of Mobile Relay with operator and sends to Mobile Relay, configuration information comprises sign, address information and the SGW capability indication information of Relay-UE PGW, and detailed process is as shown in Fig. 7 E:

Step 1.Mobile Relay initiates the connection procedure to OAM, and, to OAM request configuration information, carries Mobile Relay id information in configuration request message.

Step 2.OAM shifts to an earlier date ready configuration information according to Mobile Relay ID with operator and sends to Mobile Relay, and configuration information comprises ID and address information, the indication of SGW ability and the User-UE MME address information of Relay-UE PGW.Local ID and address information, the indication of SGW ability and the User-UE MME address information of preserving Relay-UE PGW of Mobile Relay.

Step 3.Mobile Relay, according to the configuration information that obtains in step 2, initiates S1 to User-UE MME and connects the process of setting up, the S1-MME interface between foundation and User-UE MME.

Of particular note, in local that preserve or subscription data HSS of the ID of the Relay-UE PGW that preserves in OAM and address information and Relay-UE MME, Relay-UE PGW sign and the address information of fixed configurations are consistent.

Mobile Relay sends to User-UE MME with Relay-UE PGW address and SGW capability indication information by up S1 interface foundation/S1 interface updating message, for the UE from the initial access of Mobile Relay or by being switched to the UE of Mobile Relay residential quarter, the Relay-UE PGW address of receiving in the S1 interface foundation/S1 interface renewal process of User-UE MME according to Mobile Relay initiation and SGW ability are designated as above-mentioned UE and select SGW, and detailed process as shown in Figure 7 B.

Except by up S1 interface foundation/S1 interface updating message mode, Mobile Relay also can send to User-UE MME with the SGW capability indication information by the relevant up S1AP message of UE with Relay-UE PGW address, for the UE from the initial access of Mobile Relay or by being switched to the UE of Mobile Relay residential quarter, Relay-UE PGW address and SGW capability indication information in MME up S1AP message relevant according to the UE that receives, select for the UE that relates in the relevant up S1AP message of UE carries out SGW, detailed process is as shown in Fig. 7 C.

Referring to Fig. 8 A, the embodiment of the present invention also provides a kind of wireless communication system, and this system comprises:

Relay-UE MME801, receive and ask or the PDN connection request adhering to of Mobile Relay transmission, determines to support simultaneously the entity device of PGW function and SGW function, and select the PGW of this entity device as this Mobile Relay; , with the information of described PGW and SGW capability indication information, send to described Mobile Relay; Described SGW capability indication information is used to indicate described PGW and supports the SGW function;

Mobile Relay802, be used for information and the SGW capability indication information of the PGW that the described Relay-UE MME that will receive sends, sends to User-UE MME;

User-UE MME803, for information and the SGW capability indication information of the PGW that receives described Mobile Relay transmission; Preserve the address information of this PGW and the incidence relation of SGW capability indication information and described Mobile Relay; Determine that according to described incidence relation described PGW supports the SGW function, and select the SGW of this PGW as the terminal of this Mobile Relay of access.

Referring to Fig. 8 B, the embodiment of the present invention also provides a kind of wireless communication system, and this system comprises:

Relay-UE MME811, be used for receiving and ask or the PDN connection request adhering to of Mobile Relay transmission, determines to support simultaneously the entity device of PGW function and SGW function, and select the PGW of this entity device as this Mobile Relay;

OAM812, be used for receiving the configuration request message that Mobile Relay sends; The configuration information of described Mobile Relay is sent to described Mobile Relay, be included as information and the SGW capability indication information of the PGW of described Mobile Relay configuration in this configuration information, this PGW is for supporting simultaneously the entity device of PGW function and SGW function, and this PGW and described Relay-UE MME are that the PGW of this Mobile Relay selection is identical; This SGW capability indication information is used to indicate this PGW and supports the SGW function;

Mobile Relay813, be used for information and the SGW capability indication information of the PGW that the described OAM that will receive sends, sends to User-UE MME;

User-UE MME814, for information and the SGW capability indication information of the PGW that receives described Mobile Relay transmission; Preserve the address information of this PGW and the incidence relation of SGW capability indication information and described Mobile Relay; Determine that according to described incidence relation described PGW supports the SGW function, and select the SGW of this PGW as the terminal of this Mobile Relay of access.

Referring to Fig. 9, the embodiment of the present invention also provides a kind of Relay-UE MME, and this Relay-UE MME comprises:

Receiving element 90, be used for receiving and ask or packet data network PDN connection request adhering to of mobile relay equipment Mobile Relay transmission;

Selected cell 91, be used for determining to support simultaneously the entity device of packet data gateway PGW function and gateway SGW function, and select the PGW of this entity device as this Mobile Relay.

Described selected cell 91 is used for:

Be retrieved as the information of the pre-configured PGW of described Mobile Relay from the CAMEL-Subscription-Information of local or described Mobile Relay, this PGW is for supporting simultaneously the entity device of PGW function and SGW function; And select the PGW of this PGW as this Mobile Relay.

Described selected cell 91 is used for:

, by nslookup service system DNS, obtain SGW Query Result list and PGW the results list; Determine to appear at simultaneously the device identification in this S-GW Query Result list and P-GW the results list, the gateway device that this device identification is corresponding is defined as supporting simultaneously the entity device of PGW function and SGW function.

This Relay-UE MME also comprises:

Indicating member 92, be used for the information of described PGW and SGW capability indication information, sends to described Mobile Relay; Described SGW capability indication information is used to indicate described PGW and supports the SGW function.

Described indicating member 92 is used for:

If described receiving element receives the request of adhering to that described Mobile Relay sends, by adhering to, accept Attach Accept message, the information of described PGW and SGW capability indication information are sent to described Mobile Relay;

If described receiving element receives the PDN connection request that described Mobile Relay sends, by activation, give tacit consent to evolved packet system bearer context request AC TIVATE DEFAULT EPS BEARERCONTEXT REQUEST message, the information of described PGW and SGW capability indication information are sent to described Mobile Relay.

Described selected cell 91 also is used for:

During as the PGW of this Mobile Relay, be also this Mobile Relay selection SGW at the entity device of selecting to support simultaneously PGW function and SGW function;

This Relay-UE MME also comprises:

Unit 93 set up in context, and being used at described selected cell is that after described Mobile Relay selects PGW and SGW, triggering described SGW and described PGW is that described Mobile Relay sets up bearer context.

Referring to Figure 10, the embodiment of the present invention also provides a kind of OAM, and this OAM comprises:

Receiving element 101, be used for receiving the configuration request message that mobile relay equipment Mobile Relay sends;

Indicating member 102, be used for the configuration information of described Mobile Relay is sent to described Mobile Relay, be included as information and the gateway SGW capability indication information of the packet data gateway PGW of described Mobile Relay configuration in this configuration information, this PGW supports the SGW function for supporting simultaneously the entity device of PGW function and SGW function, this SGW capability indication information to be used to indicate this PGW.

Still referring to Figure 10, the embodiment of the present invention also provides a kind of Mobile Relay, and this Mobile Relay comprises:

Receiving element 101, be used for to receive information and the gateway SGW capability indication information of the packet data gateway PGW of this Mobile Relay that link terminal Mobility Management Entity Relay-UE MME or operation and maintenance system OAM send, this SGW capability indication information is used to indicate this PGW and supports the SGW function;

Indicating member 102, be used for the information of described PGW and SGW capability indication information, sends to user terminal Mobility Management Entity User-UE MME.

Described indicating member 102 is used for:

In the S1 interface of initiating is set up process or S1 interface renewal process, the information of described PGW and SGW capability indication information are sent to User-UE MME; Perhaps,

After receiving the access request that terminal sends, by the terminal up S1 Application of Interface S1AP message of being correlated with, the information of described PGW and SGW capability indication information are sent to User-UE MME.

Described indicating member 102 also is used for:

In the S1 interface of initiating is set up process or S1 interface renewal process, after the information of described PGW and SGW capability indication information are sent to User-UE MME, the access request that receiving terminal sends, to the relevant up S1AP message of described User-UE MME transmitting terminal, to notify described this terminal of User-UE MME by this Mobile Relay access network.

Referring to Figure 11, the embodiment of the present invention also provides a kind of User-UE MME, and this User-UE MME comprises:

Receiving element 111, be used for to receive information and the gateway SGW capability indication information of the packet data gateway PGW of this Mobile Relay that mobile relay equipment Mobile Relay sends, and this SGW capability indication information is used to indicate this PGW and supports the SGW function; Preserve the address information of this PGW and the incidence relation of SGW capability indication information and described Mobile Relay;

Selected cell 112, be used for determining that according to described incidence relation described PGW supports the SGW function, and select the SGW of this PGW as the terminal of this Mobile Relay of access.

Described receiving element 111 is used for: set up process or S1 interface renewal process at the S1 interface that described Mobile Relay initiates, receive information and the SGW capability indication information of described PGW; Described selected cell 112 is used for: after the follow-up terminal that receives described Mobile Relay transmission is correlated with up S1 Application of Interface S1AP message, determine that according to described incidence relation described PGW supports the SGW function, and select the SGW of this PGW as the terminal of this Mobile Relay of access; Perhaps,

Described receiving element 111 is used for:, by the relevant up S1AP message of terminal that described Mobile Relay sends, receive information and the SGW capability indication information of described PGW; Described selected cell 112 is used for: after receiving the relevant up S1AP message of this terminal, according to described incidence relation, determine that described PGW supports the SGW function, and select the SGW of this PGW as the terminal of this Mobile Relay of access.

This User-UE MME also comprises:

Session establishment unit 113, be used for the address information of the address information of described PGW as the SGW of the terminal of this Mobile Relay of access, and according to this address information, to this SGW, send the session establishment request.

To sum up, beneficial effect of the present invention comprises:

In the scheme that the embodiment of the present invention provides, Relay-UE MME in network attachment that Mobile Relay initiates or PDN connect and set up process, selects to support simultaneously the PGW of the entity device of PGW function and SGW function as this Mobile Relay; By Relay-UE MME, the information of this PGW and SGW capability indication information are sent to Mobile Relay, perhaps, after the configuration request message that receives Mobile Relay transmission, will comprise that the information of PGW and the configuration information of SGW capability indication information send to Mobile Relay by OAM; Then, Mobile Relay sends to User-UE MME with the address information of this PGW and SGW capability indication information; User-UE MME determines that according to the information that receives this PGW supports the SGW function, and selects the SGW of this PGW as the terminal of this Mobile Relay of access.as seen, in the present invention, network side is the PGW (being Relay-UE PGW) of Mobile Relay selection and is the SGW (being User-UE SGW) that the UE under Mobile Relay selects, be positioned at same entity device, so, downlink data routed path at this UE: User-UE PGW-〉User-UE SGW-〉Relay-UEPGW-〉Relay-UE SGW-〉Donor eNB-〉Mobile Relay-〉in User-UE, User-UESGW is almost nil to the transmission range of Relay-UE PGW, make the optimization of the downlink data routed path of UE be guaranteed, because the routed path of downlink data can moving and change with Mobile Relay, but Relay-UE PGW fixes all the time in the moving process of Mobile Relay, therefore whether whether the downlink data routed path optimized the transmission path that depends on fully between Relay-UE PGW and User-UE SGW and optimized, in the situation that the transmission range between Relay-UE PGW and User-UE SGW is almost nil, can guarantee the optimization of the transmission path between Relay-UE PGW and User-UE SGW, and then make the Optimal performance of whole downlink data routed path access assurance.

After the present invention had guaranteed introducing Mobile Relay, the optimization of the data route of the UE under Mobile Relay, be conducive to save the network side transfer resource on the one hand, and the opposing party completely is conducive to reduce the data transmission delay of UE.

The present invention describes with reference to flow chart and/or the block diagram of method, equipment (system) and computer program according to the embodiment of the present invention.Should understand can be by the flow process in each flow process in computer program instructions realization flow figure and/or block diagram and/or square frame and flow chart and/or block diagram and/or the combination of square frame.Can provide these computer program instructions to the processor of all-purpose computer, special-purpose computer, Embedded Processor or other programmable data processing device to produce a machine, make the instruction of carrying out by the processor of computer or other programmable data processing device produce to be used for the device of realizing in the function of flow process of flow chart or a plurality of flow process and/or square frame of block diagram or a plurality of square frame appointments.

These computer program instructions also can be stored in energy vectoring computer or the computer-readable memory of other programmable data processing device with ad hoc fashion work, make the instruction that is stored in this computer-readable memory produce the manufacture that comprises command device, this command device is realized the function of appointment in flow process of flow chart or a plurality of flow process and/or square frame of block diagram or a plurality of square frame.

These computer program instructions also can be loaded on computer or other programmable data processing device, make on computer or other programmable devices and to carry out the sequence of operations step to produce computer implemented processing, thereby be provided for realizing the step of the function of appointment in flow process of flow chart or a plurality of flow process and/or square frame of block diagram or a plurality of square frame in the instruction of carrying out on computer or other programmable devices.

Although described the preferred embodiments of the present invention, in a single day those skilled in the art obtain the basic creative concept of cicada, can make other change and modification to these embodiment.So claims are intended to all changes and the modification that are interpreted as comprising preferred embodiment and fall into the scope of the invention.

Obviously, those skilled in the art can carry out various changes and modification and not break away from the spirit and scope of the present invention the present invention.Like this, if within of the present invention these are revised and modification belongs to the scope of the claims in the present invention and equivalent technologies thereof, the present invention also is intended to comprise these changes and modification interior.

Claims

1. a method for selecting gateway, is characterized in that, the method comprises:

2. the method for claim 1, is characterized in that, after selecting the PGW of this entity device as this Mobile Relay, further comprises:

Described Relay-UE MME, with the information of described PGW and SGW capability indication information, sends to described Mobile Relay; Described SGW capability indication information is used to indicate described PGW and supports the SGW function.

3. method as claimed in claim 2, is characterized in that, described Relay-UE MME, with the information of described PGW and SGW capability indication information, sends to described Mobile Relay, specifically comprises:

If described Relay-UE MME receives the request of adhering to that described Mobile Relay sends, described Relay-UE MME accepts Attach Accept message by adhering to, and the information of described PGW and SGW capability indication information are sent to described Mobile Relay;

If described Relay-UE MME receives the PDN connection request that described Mobile Relay sends, described Relay-UE MME gives tacit consent to evolved packet system bearer context request ACTIVATE DEFAULT EPS BEARER CONTEXT REQUEST message by activation, and the information of described PGW and SGW capability indication information are sent to described Mobile Relay.

4. as arbitrary described method in claim 1-3, it is characterized in that, the entity device of selecting to support simultaneously PGW function and SGW function at described Relay-UE MME is during as the PGW of this Mobile Relay, and further comprise: described Relay-UE MME selects SGW for this Mobile Relay; And,

Be after described Mobile Relay selects PGW and SGW, further to comprise at described Relay-UE MME:

Described Relay-UE MME triggers described SGW and described PGW is that described Mobile Relay sets up bearer context.

5. an information indicating method, is characterized in that, the method comprises:

6. an information indicating method, is characterized in that, the method comprises:

Described Mobile Relay in the S1 interface of initiating is set up process or S1 interface renewal process, sends to user terminal Mobility Management Entity User-UE MME with the information of described PGW and SGW capability indication information; Perhaps, described Mobile Relay after receiving the access request that terminal sends,, by the terminal up S1 Application of Interface S1AP message of being correlated with, sends to User-UE MME with the information of described PGW and SGW capability indication information.

7. method as claimed in claim 6, it is characterized in that, in the S1 interface that described Mobile Relay is initiating is set up process or S1 interface renewal process, after the information of described PGW and SGW capability indication information are sent to User-UE MME, further comprise:

The access request that described Mobile Relay receiving terminal sends;

Described Mobile Relay is to the relevant up S1AP message of described User-UE MME transmitting terminal, to notify described this terminal of User-UE MME by this Mobile Relay access network.

8. a method for selecting gateway, is characterized in that, the method comprises:

9. method as claimed in claim 8, it is characterized in that, at described User-UE MME in the S1 interface that described Mobile Relay initiates is set up process or S1 interface renewal process, while receiving the situation of the information of described PGW and SGW capability indication information, described User-UE MME is after the follow-up terminal that receives described Mobile Relay transmission is correlated with up S1 Application of Interface S1AP message, determine that according to described incidence relation described PGW supports the SGW function, and select the SGW of this PGW as the terminal of this Mobile Relay of access; Perhaps,

In the terminal relevant up S1AP message of described User-UE MME by described Mobile Relay transmission, while receiving the situation of the information of described PGW and SGW capability indication information, described User-UEMME is after receiving the relevant up S1AP message of this terminal, determine that according to described incidence relation described PGW supports the SGW function, and select the SGW of this PGW as the terminal of this Mobile Relay of access.

10. method as claimed in claim 8 or 9, is characterized in that, after the SGW that selects this PGW as the terminal of this Mobile Relay of access, further comprises:

Described User-UE MME is the address information of SGW of the address information of described PGW as the terminal of this Mobile Relay of access, and according to this address information, to this SGW, sends the session establishment request.

11. a link terminal Mobility Management Entity Relay-UE MME, is characterized in that, this Relay-UE MME comprises:

12. Relay-UE MME as claimed in claim 11, is characterized in that, this Relay-UE MME also comprises:

Indicating member, be used for the information of described PGW and SGW capability indication information, sends to described Mobile Relay; Described SGW capability indication information is used to indicate described PGW and supports the SGW function.

13. Relay-UE MME as claimed in claim 12, is characterized in that, described indicating member is used for:

If described receiving element receives the PDN connection request that described Mobile Relay sends, by activation, give tacit consent to evolved packet system bearer context request ACTIVATE DEFAULT EPS BEARER CONTEXT REQUEST message, the information of described PGW and SGW capability indication information are sent to described Mobile Relay.

14. arbitrary Relay-UE MME described in claim 11-13, is characterized in that, described selected cell also is used for:

This Relay-UE MME also comprises:

Unit set up in context, and being used at described selected cell is that after described Mobile Relay selects PGW and SGW, triggering described SGW and described PGW is that described Mobile Relay sets up bearer context.

15. an operation and maintenance system OAM, is characterized in that, this OAM comprises:

Indicating member, be used for the configuration information of described Mobile Relay is sent to described Mobile Relay, be included as information and the gateway SGW capability indication information of the packet data gateway PGW of described Mobile Relay configuration in this configuration information, the information of this PGW comprises sign and/or the address information of PGW, this PGW supports the SGW function for supporting simultaneously the entity device of PGW function and SGW function, this SGW capability indication information to be used to indicate this PGW.

16. a mobile relay equipment Mobile Relay, is characterized in that, this Mobile Relay comprises:

Indicating member, be used for setting up process or S1 interface renewal process at the S1 interface of initiating, and the information of described PGW and SGW capability indication information are sent to user terminal Mobility Management Entity User-UE MME; Perhaps, after receiving the access request that terminal sends, by the terminal up S1 Application of Interface S1AP message of being correlated with, the information of described PGW and SGW capability indication information are sent to User-UE MME.

17. Mobile Relay as claimed in claim 16, is characterized in that, described indicating member also is used for:

18. a user terminal Mobility Management Entity User-UE MME, is characterized in that, this User-UE MME comprises:

19. User-UE MME as claimed in claim 18, it is characterized in that, described selected cell specifically is used for: at the S1 interface that described Mobile Relay initiates, set up process or S1 interface renewal process, while receiving the situation of the information of described PGW and SGW capability indication information, after the follow-up terminal that receives described Mobile Relay transmission is correlated with up S1 Application of Interface S1AP message, determine that according to described incidence relation described PGW supports the SGW function, and select the SGW of this PGW as the terminal of this Mobile Relay of access; Perhaps, in the relevant up S1AP message of the terminal that sends by described Mobile Relay, while receiving the situation of the information of described PGW and SGW capability indication information, determine that according to described incidence relation described PGW supports the SGW function, and select the SGW of this PGW as the terminal of this Mobile Relay of access.

20. User-UE MME as described in claim 18 or 19, is characterized in that, this User-UE MME also comprises:

The session establishment unit, be used for the address information of the address information of described PGW as the SGW of the terminal of this Mobile Relay of access, and according to this address information, to this SGW, send the session establishment request.

21. a wireless communication system, is characterized in that, this system comprises:

22. a wireless communication system, is characterized in that, this system comprises: