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WO2013060164A1 - Procédé, système et dispositif d'indication d'informations et de sélection de passerelle - Google Patents

Procédé, système et dispositif d'indication d'informations et de sélection de passerelle Download PDF

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Publication number
WO2013060164A1
WO2013060164A1 PCT/CN2012/078222 CN2012078222W WO2013060164A1 WO 2013060164 A1 WO2013060164 A1 WO 2013060164A1 CN 2012078222 W CN2012078222 W CN 2012078222W WO 2013060164 A1 WO2013060164 A1 WO 2013060164A1
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WIPO (PCT)
Prior art keywords
pgw
sgw
mobile relay
relay
mme
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English (en)
Chinese (zh)
Inventor
焦斌
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China Academy of Telecommunications Technology CATT
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China Academy of Telecommunications Technology CATT
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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W48/00—Access restriction; Network selection; Access point selection
    • H04W48/17—Selecting a data network PoA [Point of Attachment]

Definitions

  • the invention relates to an information indicating and gateway selection method, system and device.
  • the application is submitted to the Chinese Patent Office on October 26, 2011, and the application number is 201110329999.0.
  • the invention name is "an information indication and gateway selection method, system and device". Priority of Chinese Patent Application, the entire contents of which is incorporated herein by reference.
  • the present invention relates to the field of wireless communications, and in particular, to an information indication and gateway selection method, system, and device. Background technique
  • the selection of a serving gateway (SGW) for a terminal (UE) is mainly based on the current location of the UE and the topology relationship of the network, so that the route of the SGW serving the current UE to the current serving base station of the UE is always optimized.
  • the scheme for the network to select the SGW for the UE is as follows:
  • the network selects the SGW for the UE to refer to the current location of the UE.
  • the SGW1 of the Core Network site 1 is connected to the base station site 1/2/3 base station, and the Core Network site 2
  • the SGW2 is connected to the base station of the base station site 4/5/6.
  • the serving base station of the UE changes continuously.
  • the network selects the device SGW2 of the Core Network site 2 for the UE. Continue to provide services.
  • the downlink data routing path of the UE is: Packet Data Network (PDN GW) -> SGW -> Base station -> UE. As shown in Figure 1, as the UE moves, the downlink data routing path of the UE also changes.
  • PDN GW Packet Data Network
  • the system architecture diagram is shown in Figure 2.
  • the Mobile Relay is given two identities in the two networks, firstly composed of the Relay Network Element.
  • the Mobile Relay works as a normal UE in the network; and in the network composed of the UE Network Element (the network consisting of the devices labeled 2), Mobile Relay works as a base station (eNB) in the network.
  • eNB base station
  • the Mobile Relay works as a normal UE. Therefore, with the movement of the Mobile Relay, the mobile base station of the Mobile Relay is the donor base station (Donor eNB, De B) and The SGW is constantly changing.
  • the Mobile Relay works as an eNB, and the real user UE (User-UE) under the Mobile Relay does not actually know that the Mobile Relay is a special base station, and does not know. Mobile Relay is on the move.
  • the downlink data routing path of the User-UE after the introduction of the Mobile Relay is: User-UE PGW -> User-UE SGW -> Relay-Terminal Packet Data Gateway (Relay-UE PGW) ) -> Relay-UE SGW -> Donor e B-> Mobile Relay -> User-UE, where the downstream data transmission path changes with the Mobile Relay.
  • Relay-UE PGW Relay-UE PGW
  • the network selects the SGW for the UE, and usually considers the topology of the network, so that the route between the eNB itself and the SGW is always optimized.
  • the topology of the network will change with the movement of the Mobile Relay itself. Therefore, the prior art cannot guarantee that the network selects the SGW for the UE under the Mobile Relay (ie, User-UE).
  • User-UE SGW The route to the Mobile Relay is still optimized.
  • the embodiment of the invention provides an information indication and gateway selection method, system and device, which are used to solve the problem that the optimization of the downlink data routing path of the UE under the Mobile Relay cannot be guaranteed.
  • a gateway selection method comprising:
  • the relay terminal mobility management entity Relay-UE MME receives the attach request or the packet data network PDN connection request sent by the mobile relay device Mobile Relay;
  • the Relay-UE MME determines a physical device that supports both the packet data gateway PGW function and the serving gateway SGW function, and selects the physical device as the PGW of the Mobile Relay.
  • An information indicating method comprising:
  • the operation and maintenance system OAM receives the configuration information request message sent by the mobile relay device Mobile Relay; the OAM sends the configuration information of the Mobile Relay to the Mobile Relay, and the configuration information includes the group configured for the Mobile Relay Information and service gateway SGW capability indication information of the data gateway PGW, the PGW is an entity device that supports both the PGW function and the SGW function, and the SGW capability indication information is used to indicate that the PGW supports the SGW function.
  • An information indicating method comprising:
  • the mobile relay device receives the information of the packet data gateway PGW of the Mobile Relay and the service gateway SGW capability indication information sent by the relay terminal mobility management entity Relay-UE MME or the operation and maintenance system OAM, and the SGW capability indication information is used. Instructing the PGW to support the SGW function;
  • the Mobile Relay sends the information of the PGW and the SGW capability indication information to the user terminal mobility management entity User-UE MME.
  • a gateway selection method comprising:
  • the user terminal mobility management entity User-UE MME receives the information of the Mobile Relay packet data gateway PGW and the serving gateway SGW capability indication information sent by the mobile relay device Mobile Relay, and the SGW capability indication information is used to indicate that the PGW supports the SGW function. And storing an address information of the PGW and an association relationship between the SGW capability indication information and the Mobile Relay;
  • the User-UE MME determines that the PGW supports the SGW function according to the association relationship, and selects the PGW as the SGW of the terminal that accesses the Mobile Relay.
  • a relay terminal mobility management entity Relay-UE MME, the Relay-UE MME includes: a receiving unit, configured to receive an attach request or a packet data network PDN connection request sent by the mobile relay device Mobile Relay;
  • the selecting unit is configured to determine a physical device that supports both the packet data gateway PGW function and the serving gateway SGW function, and selects the physical device as the PGW of the Mobile Relay.
  • An operation and maintenance system OAM includes:
  • the information and service gateway SGW capability indication information of the packet data gateway PGW is an entity device that supports both the PGW function and the SGW function, and the SGW capability indication information is used to indicate that the PGW supports the SGW function.
  • a mobile relay device Mobile Relay, the Mobile Relay includes:
  • a receiving unit configured to receive information and a serving gateway SGW capability indication information of the packet data gateway PGW of the Mobile Relay sent by the relay terminal mobility management entity Relay-UE MME or the operation and maintenance system OAM, where the SGW capability indication information is used Instructing the PGW to support the SGW function;
  • a sending unit configured to send the information about the PGW and the SGW capability indication information to the user terminal mobility management entity User-UE MME.
  • a user terminal mobility management entity User-UE MME, the User-UE MME includes:
  • a receiving unit configured to receive the information of the packet data gateway PGW of the Mobile Relay and the service gateway SGW capability indication information sent by the mobile relay device Mobile Relay, where the SGW capability indication information is used to indicate that the PGW supports the SGW function; and the PGW is saved. Address information and an association relationship between the SGW capability indication information and the Mobile Relay;
  • a selecting unit configured to determine, according to the association relationship, that the PGW supports the SGW function, and select the PGW as the SGW of the terminal that accesses the Mobile Relay.
  • a wireless communication system comprising:
  • a relay terminal mobility management entity Relay-UE MME configured to receive an attach request or a packet data network PDN connection request sent by the mobile relay device Mobile Relay, and determine a physical device that supports the packet data gateway PGW function and the serving gateway SGW function at the same time, And selecting the physical device as the PGW of the Mobile Relay; sending the information of the PGW and the SGW capability indication information to the Mobile Relay; the SGW capability indication information is used to indicate that the PGW supports the SGW function;
  • Mobile Relay configured to send the received information of the PGW and the SGW capability indication information sent by the Relay-UE MME to the user terminal mobility management entity User-UE MME;
  • User-UE MME configured to receive information about the PGW sent by the Mobile Relay and an SGW capability indication letter And storing the address information of the PGW and the association relationship between the SGW capability indication information and the Mobile Relay; determining, according to the association relationship, that the PGW supports the SGW function, and selecting the PGW as the SGW of the terminal that accesses the Mobile Relay.
  • a wireless communication system comprising:
  • a relay terminal mobility management entity Relay-UE MME configured to receive an attach request or a packet data network PDN connection request sent by the mobile relay device Mobile Relay, and determine a physical device that supports the packet data gateway PGW function and the serving gateway SGW function at the same time, And selecting the physical device as the PGW of the Mobile Relay;
  • the operation and maintenance system OAM is configured to receive a configuration information request message sent by the Mobile Relay, and send the configuration information of the Mobile Relay to the Mobile Relay, where the configuration information includes information and a SGW of the PGW configured for the Mobile Relay Capability indicating information, the PGW is a physical device that supports both the PGW function and the SGW function, and the PGW is the same as the PGW selected by the Relay-UE MME for the Mobile Relay; the SGW capability indication information is used to indicate that the PGW supports the SGW function. ;
  • a Mobile Relay configured to send the received information of the PGW and the SGW capability indication information sent by the OAM to the user terminal mobility management entity User-UE MME;
  • a user-UE MME configured to receive information about the PGW and the SGW capability indication information sent by the Mobile Relay, and save the address information of the PGW and the association relationship between the SGW capability indication information and the Mobile Relay, and determine the association according to the association relationship.
  • the PGW supports the SGW function, and selects the PGW as the SGW of the terminal accessing the Mobile Relay.
  • the PGW (the Relay-UE PGW) selected by the Mobile Relay on the network side and the SGW (the User-UE SGW) selected by the UE accessing the Mobile Relay are located in the same physical device, then Downlink data routing path in the UE: User-UE PGW-> User-UE SGW-> Relay-UE PGW-> Relay-UE SGW-> Donor e B-> Mobile Relay -> User-UE, User-UE
  • the transmission distance of the SGW to the Relay-UE PGW is almost zero, so that the optimization of the downlink data routing path of the UE is guaranteed.
  • FIG. 2 is a schematic diagram of a mobile process of a User-UE with a Mobile Relay in the prior art
  • FIG. 3 is a schematic flowchart of a method according to an embodiment of the present disclosure.
  • FIG. 5 is a schematic flowchart of still another method according to an embodiment of the present disclosure.
  • FIG. 6 is a schematic flowchart of still another method according to an embodiment of the present disclosure.
  • FIG. 7A is a schematic flowchart of Embodiment 1 of the present invention.
  • 7C is a schematic flowchart of Embodiment 3 of the present invention
  • 7D is a schematic flowchart of Embodiment 4 of the present invention
  • FIG. 8A is a schematic structural diagram of a system according to an embodiment of the present invention.
  • FIG. 8B is a schematic structural diagram of another system according to an embodiment of the present disclosure.
  • FIG. 9 is a schematic structural diagram of a device according to an embodiment of the present disclosure.
  • FIG. 10 is a schematic structural diagram of another device according to an embodiment of the present disclosure.
  • FIG. 11 is a schematic structural diagram of another apparatus according to an embodiment of the present invention.
  • the embodiment of the present invention provides an information indication and gateway selection method.
  • the relay terminal mobility management entity (Relay) - UE MME ) selects a physical device that supports both the Packet Data Gateway ( PGW ) function and the Serving Gateway ( SGW ) function as the PGW of the Mobile Relay during the establishment of a network attached or packet data network ( PDN ) connection initiated by the Mobile Relay Relay-UE PGW, and send the information of the PGW and the SGW capability indication information to the Mobile Relay;
  • the Mobile Relay sends the information of the PGW and the SGW capability indication information to the User-UE MME;
  • the UE MME determines that the PGW supports the SGW function according to the received information, and selects the PGW as the user terminal serving gateway User-UE SGW, that is, the SGW that is the terminal that accesses the Mobile Relay.
  • PGW Packet Data Gateway
  • SGW Serving Gateway
  • the information of the PGW of the Mobile Relay is pre-configured in the Relay-UE MME/HSS and the OAM.
  • the PGW is an entity device that supports both the PGW function and the SGW function, and is configured in the Relay-UE MME/HSS and OAM. The information is consistent.
  • the Relay-UE MME selects the PGW for the Mobile Relay according to the configuration information during the network attachment or PDN connection establishment initiated by the Mobile Relay.
  • the OAM After receiving the configuration information request message sent by the Mobile Relay, the OAM sends the configuration information of the PGW including the pre-configured Mobile Relay and the configuration information of the SGW capability indication information to the Mobile Relay; the Mobile Relay then instructs the PGW and the SGW capability.
  • the information is sent to the User-UE MME.
  • the User-UE MME determines that the PGW supports the SGW function according to the received information, and selects the PGW as the User-UE SGW, that is, the SGW that is the terminal that accesses the Mobile Relay.
  • the method for selecting a gateway on the MME side of the Relay-UE includes the following steps: Step 30: The Relay-UE MME receives an attach request or a PDN connection request sent by the Mobile Relay; Step 31: Relay-UE The MME determines a physical device that supports both the PGW function and the SGW function, and selects the physical device as the PGW of the Mobile Relay.
  • the Relay-UE MME determines an entity device that supports both the PGW function and the SGW function, and the specific implementation may be as follows:
  • the Relay-UE MME obtains the SGW query result list and the PGW node by querying the Domain Name Service System (DNS).
  • DNS Domain Name Service System
  • the device identifier is determined, and the device identifier that is in the SGW query result list and the PGW result list is determined, and the gateway device corresponding to the device identifier is determined as a physical device that supports both the PGW function and the SGW function.
  • the relay-UE MME may send the information of the selected PGW and the SGW capability indication information to the Mobile Relay.
  • the SGW capability indication information is used to indicate that the PGW supports the SGW function. specific:
  • the Relay-UE MME receives the attach request from the Mobile Relay in step 30, the Relay-UE MME sends the PGW information and the SGW capability indication information to the Mobile Relay through an Attach Accept message;
  • the Relay-UE MME receives the PDN connection request sent by the Mobile Relay in step 30, the Relay-UE MME activates the PGW information and the SGW capability by activating an ACTIVATE DEFAULT EPS BEARER CONTEXT REQUEST message.
  • the indication information is sent to the Mobile Relay. Further, when the Relay-UE MME selects the PGW for the Mobile Relay in step 31, the Relay-UE MME selects the SGW for the Mobile Relay; then, after step 31, and the Relay-UE MME to the M
  • the Relay-UE MME could trigger the selected SGW and PGW to establish a bearer context for the Mobile Relay.
  • the Relay-UE MME determines an entity device that supports both the PGW function and the SGW function, and the specific implementation may be as follows:
  • the relay-UE MME obtains the information of the PGW pre-configured by the mobile relay from the subscription information of the local or mobile relay.
  • the PGW is a physical device that supports both the PGW function and the SGW function, and selects the PGW as the PGW of the Mobile Relay.
  • the information of the PGW pre-configured for the Mobile Relay may include the identifier and/or address information of the PGW; the subscription information of the Mobile Relay may be stored in the Home Subscriber Server (HSS).
  • HSS Home Subscriber Server
  • the Relay-UE MME may also select the SGW for the Mobile Relay; then, after the step 31, the Relay-UE MME may trigger the selection of the SGW and the PGW as the Mobile.
  • the Relay establishes a bearer context. Then, Relay-UE MME to Mo elay
  • the relay-UE MME triggers the selected SGW and the PGW to establish a bearer context for the Mobile Relay as follows:
  • the Relay-UE MME sends a session creation request (Creat Session Request) to the selected SGW, and the SGW sends the Create Session Request to the selected PGW.
  • the PGW After the PGW establishes a bearer context for the Mobile Relay, it returns a session creation response (Creat Session Response) to the SGW, and the SGW sends the Create Session Response to the Relay-UE MME.
  • the method for indicating information on the OAM side includes the following steps: Step 40: The OAM receives a configuration information request (Configuration Request) message sent by the Mobile Relay. Step 41: The OAM sends the configuration information of the Mobile Relay to the Mobile Relay.
  • the configuration information includes information about the PGW configured for the Mobile Relay and SGW capability indication information, where the PGW is a physical device that supports both the PGW function and the SGW function.
  • the SGW capability indication information is used to indicate that the PGW supports the SGW function.
  • the method for indicating information on the Mobile Relay side includes the following steps: Step 50: The Mobile Relay receives the information of the PGW and the SGW capability indication information of the Mobile Relay sent by the Relay-UE MME or the OAM.
  • the SGW capability indication information is used to indicate that the PGW supports the SGW function.
  • the Mobile Relay can be established on the initiated S1 interface. During the process or the S1 interface update process, the address information of the PGW and the SGW capability indication information are sent to the User-UE MME; or
  • the Mobile Relay After receiving the access request sent by the terminal, the Mobile Relay sends the PGW information and the SGW capability indication information to the User-UE MME through the terminal-related uplink S1 interface application (S1AP) message.
  • the access request may be an access request sent by the terminal during the initial initiation of the access or the process of cutting into the Mobile Relay cell.
  • the Mobile Relay sends the PGW information and the SGW capability indication information to the User-UE MME during the S1 interface setup process or the S1 interface update process, the Mobile Relay is after the PGW information and the SGW capability indication information are sent.
  • the UE sends a terminal-related uplink S1AP message to the User-UE MME to notify the User-UE MME that the terminal has accessed the network through the Mobile Relay.
  • the S1 interface is a logical interface established between the radio access network node and the core network node, and is specifically divided into a control plane interface (S1-MME) and a user plane interface (S1-U).
  • the S1-MME is a logical interface established between the radio access network node and the MME, and is used for transmitting control plane signaling (refer to 3GPP TS36.413 for specific signaling content).
  • S1-U is a logical interface established between the radio access network node and the SGW for transmitting user plane data (see 3GPP TS 29.281 for the format of the user plane data packet).
  • the method for selecting a gateway on the User-UE MME side includes the following steps: Step 60: The User-UE MME receives the information about the PGW of the Mobile Relay and the SGW capability indication information sent by the Mobile Relay, The SGW capability indication information is used to indicate that the PGW supports the SGW function; and the address information of the PGW and the association relationship between the SGW capability indication information and the Mobile Relay are saved;
  • Step 61 The User-UE MME determines that the PGW supports the SGW function according to the saved association relationship, and selects the PGW as the User-UE SGW, that is, selects the PGW as the SGW of the terminal that accesses the Mobile Relay.
  • the User-UE MME may receive the address information of the PGW and the SGW capability indication information during the SI interface establishment process or the S1 interface update process initiated by the Mobile Relay; then, in step 61, the User-UE MME receives the subsequent After the terminal-related uplink S1AP message sent by the Mobile Relay, determining, according to the association relationship, the PGW supports the SGW function, and selecting the PGW as the User-UE SGW; or
  • the User-UE MME receives the PGW related to the uplink SI AP message sent by the Mobile Relay. After the user-UE MME receives the uplink-related S1AP message of the terminal, the user-UE MME determines, according to the association relationship, that the PGW supports the SGW function, and selects the PGW as the User-UE SGW.
  • the User-UE MME may also use the address information in the information of the received PGW as the address information of the SGW of the terminal that accesses the Mobile Relay, and send a session establishment request to the SGW according to the address information. And if the SGW is capable of providing a service to the UE, returning a session establishment response to the User-UE MME to notify the User-UE MME of the session establishment.
  • the downlink data routing path of the UE is: User-UE PGW->User-UE SGW-> Relay-UE PGW->Relay -UE SGW->Donor e B->Mobile Relay->User-UE.
  • the present invention mainly solves the problem of how to optimize the User-UE SGW and the Relay-UE PGW routing, that is, the user-UE SGW function and the Relay-UE PGW function are selected to the same physical device.
  • the network needs to select a device that supports both the PGW and the SGW as the Relay-UE PGW.
  • the Mobile Relay selects the Relay-UE PGW for the Mobile Relay during the process of attaching to the network or initiating the PDN connection, so the Relay-UE MME needs to select one of the Mobile Relays to support both the PGW and the Mobile Relay.
  • the SGW-enabled device carries the Relay-UE PGW function, and the Relay-UE MME sends the address information of the Relay-UE PGW and the support indication of the Relay-UE PGW to the SGW function to the Mobile Relay.
  • the operator can select a device that supports both the PGW and the SGW function in the process of pre-configuring the Relay-UE PGW for the Mobile Relay. Carry the Relay-UE PGW function.
  • the Mobile Relay when the UE accesses the network through the Mobile Relay, the Mobile Relay sends the Relay-UE PGW address information and the capability indication information supported by the Relay-UE PGW to the SGW function to the core of the UE.
  • the User-UE MME determines that the Relay-UE PGW supports the SGW function according to the capability indication information supported by the SGW function by the Relay-UE PGW, and the User-UE MME selects the Relay-UE PGW as the User-UE SGW.
  • the Relay-UE PGW address information is used as the address information of the User-UE SGW.
  • the User-UE MME initiates a session establishment request procedure to the User-UE SGW.
  • the network sends the Relay-UE PGW address and the SGW capability indication to the Mobile Relay during the process of the Mobile Relay attaching to the network or initiating the PDN connection establishment.
  • the Mobile Relay sends the Relay-UE PGW address information and the SGW capability indication to the User-UE MME, and the Secondary User-UE MME performs the User-UE SGW selection for the User-UE.
  • Mobile Relay is attached to the network, or Mobile Relay initiates PDN connection establishment, Mobile The Relay obtains the Relay-UE PGW address information and the SGW capability indication procedure from the Relay-UE MME as shown in FIG. 7A: Step 1.
  • the Mobile Relay establishes a Radio Resource Control (RRC) signaling connection with the DeNB.
  • RRC Radio Resource Control
  • Step 2 For the Attach process initiated by the Mobile Relay, establish a good RRC signaling connection through Step 1.
  • the Mobile Relay sends an Attach Request message to the DeNB, and the DeNB directly transmits the Attach Request message to the Relay-UE MME.
  • Step 2a For the PDN connection establishment process initiated by the Mobile Relay, the Mobile Relay sends a PDN Connectivity Request message to the DeNB, and the DeNB transparently transmits the PDN Connectivity Request message to the Relay-UE MME.
  • the attach process and the PDN connection establishment process are two separate processes, and only one process is performed, and the two do not occur at the same time. That is, only one of step 2 and step 2a is performed.
  • the Relay-UE MME selects the Relay-UE SGW and the Relay-UE PGW for the Mobile Relay according to the current location information of the Mobile Relay.
  • the Relay-UE MME selects a physical device that supports both the PGW function and the SGW function when selecting the Relay-UE PGW for the Mobile Relay.
  • Step 4 The Relay-UE MME sends a session creation request (Creat Session Request) to the Relay-UE SGW;
  • Step 4a The Relay-UE SGW sends a Creat Session Request to the Relay-UE PGW.
  • Step 5a After the Relay-UE PGW establishes a bearer context for the Mobile Relay, it returns a session to the Relay-UE SGW (Creat Session Response);
  • Step 5 The Relay-UE SGW sends the Creat Session Response to the Relay-UE MME.
  • Step 6 For the attach process initiated by the Mobile Relay, the Relay-UE MME sends the Relay-UE PGW address information and the SGW capability indication selected by the Mobile Relay to the Mobile Relay through the Attach Accept message.
  • Step 6a For the PDN connection establishment process initiated by the Mobile Relay, the Relay-UE MME sends the Relay-UE PGW address information and the SGW capability indication selected by the Mobile Relay to the Mobile Relay through the ACTIVATE DEFAULT EPS BEARER CONTEXT REQUEST message.
  • Step 6 and step 6a will only perform one of them.
  • the Mobile Relay sends the Relay-UE PGW address information and the SGW capability indication to the User-UE MME through the uplink S1 interface setup/S1 interface update message.
  • User The UE MME selects the SGW for the UE according to the Relay-UE PGW address information and the SGW capability indication received during the SI interface setup/SI interface update initiated by the Mobile Relay, as shown in FIG. 7B.
  • Step 1 During the establishment/update of the SI interface initiated by the Mobile Relay, if the Relay-UE PGW is simultaneously supported With the SGW function, the Mobile Relay sends the previously obtained Relay-UE PGW address and SGW capability indication information to the User-UE MME.
  • Step 1 During the initial access procedure initiated by the UE or the process of the UE cutting into the Mobile Relay cell, the UE initiates an access procedure to the Mobile Relay.
  • Step 2 The Mobile Relay sends a UE-related uplink S 1 AP message to the User-UE MME to notify the User-UE MME that the UE has currently accessed the network from the Mobile Relay.
  • Step 3 The User-UE MME determines that the Relay-UE PGW supports the SGW function according to the Relay-UE PGW address information and the SGW capability indication received and locally saved in the Step 0, and the User-UE MME selects the Relay-UE PGW. At the same time, it is used as the User-UE SGW, and the Relay-UE PGW address information is used as the address information of the User-UE SGW.
  • Step 4 The User-UE MME initiates a session establishment request to the User-UE SGW according to the address information of the User-UE SGW obtained in step 3.
  • Step 5 If the User-UE SGW can provide services for the UE, the User-UE SGW returns a session establishment response message to the User-UE MME to notify the User-UE MME that the session establishment is completed.
  • the Mobile Relay can also send the Relay-UE PGW address and the SGW capability indication information to the User-UE MME through the UE-related uplink S1AP message, for the initial connection from the Mobile Relay.
  • the MME enters the UE involved in the UE related uplink S1AP message according to the Relay-UE PGW address and the SGW capability indication information in the received UE-related uplink S1 AP message.
  • SGW selection the specific process is shown in Figure 7C:
  • Step 1 During the initial access procedure initiated by the UE or the process of the UE cutting into the Mobile Relay cell, the UE initiates an access procedure to the Mobile Relay.
  • Step 2 The Mobile Relay sends a UE-related uplink S 1 AP message to the User-UE MME to notify the User-UE MME that the UE has currently accessed the network from the Mobile Relay.
  • the Mobile Relay needs to carry the previously obtained Relay-UE PGW address and SGW capability indication information in the UE related uplink S 1AP message and send it to the User-UE MME.
  • Step 3 The User-UE MME determines that the Relay-UE PGW supports the SGW function according to the capability indication information supported by the SGW function in the Relay-UE PGW obtained in the step 2, and the User-UE MME selects the Relay-UE PGW as the User- The UE SGW, and uses the Relay-UE PGW address information as the address information of the User-UE SGW.
  • Step 4 The User-UE MME initiates a session establishment request to the User-UE SGW according to the address information of the User-UE SGW obtained in step 3.
  • Step 5 If the User-UE SGW can provide services for the UE, the User-UE SGW returns a session establishment response message to the User-UE MME to notify the User-UE MME that the session establishment is completed.
  • the network pre-configures the Relay-UE PGW for the Mobile Relay, which is attached to the Mobile Relay.
  • the network selects a fixed Relay-UE PGW for the Mobile Relay.
  • the network management system sends the Relay-UE PGW address and the SGW capability indication information that are fixedly configured for the Mobile Relay to the Mobile Relay.
  • the Mobile Relay sends the Relay-UE PGW information to the User-UE MME to assist the User-UE MME in selecting the gateway for the User-UE.
  • the Relay-UE MME selects the Relay-UE PGW for the Mobile Relay according to the subscription data information in the HSS or the Mobile Relay PGW information stored locally by the Relay-UE MME. Because the Relay-UE PGW is pre-configured, it can ensure that the Relay-UE PGW supports the SGW function at the same time. The specific process is shown in Figure 7D:
  • Step 0. The operator configures the Relay-UE PGW ID and address information that is configured for the Mobile Relay to the Relay-UE MME or the subscription data saved to the HSS.
  • the configured Relay-UE PGW supports both PGW and SGW functions.
  • Step 1 The Mobile Relay establishes an RRC signaling connection with the DeNB. Details of the establishment of the RRC signaling connection can be found in 3GPP TS 36.331, which is not described in detail here.
  • Step 2 For the Attach process initiated by the Mobile Relay, the Mobile Relay sends an Attach Request message to the DeNB through the RRC signaling connection established in Step 1.
  • the DeNB transparently transmits the Attach Request message to the Relay-UE MME.
  • Step 2a For the PDN connection establishment process initiated by the Mobile Relay, the Mobile Relay sends a PDN connectivity request message to the DeNB, and the DeNB transparently transmits the PDN connectivity request message to the Relay-UE MME.
  • Step 3 The Relay-UE MME selects the Relay-UE PGW for the Mobile Relay according to the subscription information saved in the HSS or the Mobile Relay PGW identifier or address information stored locally by the Relay-UE MME.
  • Step 4 The Relay-UE MME sends a session creation request (Creat Session Request) to the Relay-UE SGW;
  • Step 4a The Relay-UE SGW sends a Creat Session Request to the Relay-UE PGW.
  • Step 5a After the Relay-UE PGW establishes a bearer context for the Mobile Relay, it returns a session to the Relay-UE SGW (Creat Session Response);
  • Step 5 The Relay-UE SGW sends the Creat Session Response to the Relay-UE MME.
  • Step 6 For the attach process initiated by the Mobile Relay, the Relay-UE MME returns an Attach Accept message to the Mobile Relay.
  • Step 6a For the PDN connection establishment process initiated by the Mobile Relay, the Relay-UE MME returns an ACTIVATE DEFAULT EPS BEARER CONTEXT REQUEST message to the Mobile Relay.
  • Step 6 and step 6a will only perform one of them.
  • the Mobile Relay Before the Mobile Relay enters the working state as the base station, the Mobile Relay first initiates a connection process to the OAM and requests configuration information from the OAM.
  • the OAM sends the configuration information prepared by the operator to the Mobile Relay according to the identity (ID) of the Mobile Relay.
  • the configuration information includes the identifier, address information, and SGW capability indication information of the Relay-UE PGW.
  • the specific process is shown in Figure 7E.
  • Step 1 The Mobile Relay initiates the connection process to the OAM, and requests configuration information from 0 AM.
  • the Mobile Relay ID information is carried in the configuration information request message.
  • Step 2 The OAM sends the configuration information prepared by the operator to the Mobile Relay according to the Mobile Relay ID.
  • the configuration information includes the ID and address information of the Relay-UE PGW, the SGW capability indication, and the User-UE MME address information.
  • the Mobile Relay locally stores the ID and address information of the Relay-UE PGW, the SGW capability indication, and the User-UE MME address information.
  • Step 3 The Mobile Relay initiates an S1 connection establishment process to the User-UE MME according to the configuration information obtained in step 2, and establishes an S1-MME interface with the User-UE MME.
  • the ID and address information of the Relay-UE PGW saved in the OAM are consistent with the Relay-UE PGW identifier and address information fixedly configured in the contract data of the HS-MME or the HSS.
  • the Mobile Relay sends the Relay-UE PGW address and the SGW capability indication information to the User-UE MME through the uplink S1 interface setup/S1 interface update message, for the UE initially accessed from the Mobile Relay or by the UE switching to the Mobile Relay cell.
  • the User-UE MME selects the SGW for the UE according to the Relay-UE PGW address and the SGW capability indication received during the SI interface establishment/SI interface update initiated by the Mobile Relay, as shown in FIG. 7B.
  • the Mobile Relay can also send the Relay-UE PGW address and the SGW capability indication information to the User-UE MME through the UE-related uplink S1AP message, for the initial connection from the Mobile Relay.
  • the MME enters the UE involved in the UE related uplink S1AP message according to the Relay-UE PGW address and the SGW capability indication information in the received UE-related uplink S1 AP message. SGW selection, the specific process is shown in Figure 7C.
  • an embodiment of the present invention further provides a wireless communication system, where the system includes:
  • the Relay-UE MME 801 receives an attach request or a PDN connection request sent by the Mobile Relay, determines an entity device that supports both the PGW function and the SGW function, and selects the physical device as the PGW of the Mobile Relay; the PGW information and the SGW capability indication The information is sent to the Mobile Relay; the SGW capability indication information is used to indicate that the PGW supports the SGW function;
  • a Mobile Relay 802 configured to send the received PGW information and SGW capability indication information sent by the Relay-UE MME to the User-UE MME;
  • the user-UE MME 803 is configured to receive the information about the PGW and the SGW capability indication information sent by the Mobile Relay, and save the address information of the PGW and the association relationship between the SGW capability indication information and the Mobile Relay; The relationship determines that the PGW supports the SGW function, and selects the PGW as the SGW of the terminal accessing the Mobile Relay.
  • an embodiment of the present invention further provides a wireless communication system, where the system includes:
  • the Relay-UE MME811 is configured to receive an attach request or a PDN connection request sent by the Mobile Relay, determine an entity device that supports both the PGW function and the SGW function, and select the physical device as the Mobile Relay.
  • the OAM812 is configured to receive a configuration information request message sent by the Mobile Relay, and send the configuration information of the Mobile Relay to the Mobile Relay, where the configuration information includes information about the PGW configured for the Mobile Relay and SGW capability indication information, where the PGW is simultaneously supported.
  • the configuration information includes information about the PGW configured for the Mobile Relay and SGW capability indication information, where the PGW is simultaneously supported.
  • a physical device of the PGW function and the SGW function, and the PGW and the Relay-UE MME are the same as the PGW selected by the Mobile Relay;
  • the SGW capability indication information is used to indicate that the PGW supports the SGW function;
  • a Mobile Relay 813 configured to send the information of the PGW and the SGW capability indication information sent by the received OAM to the User-UE MME;
  • the user-UE MME 814 is configured to receive information about the PGW and the SGW capability indication information sent by the Mobile Relay, and save the address information of the PGW and the association relationship between the SGW capability indication information and the Mobile Relay, and determine, according to the association relationship, the PGW supports the SGW function, and The PGW is selected as the SGW of the terminal accessing the Mobile Relay.
  • the embodiment of the present invention further provides a Relay-UE MME, where the Relay-UE MME includes: a receiving unit 90, configured to receive an attach request or a PDN connection request sent by the Mobile Relay;
  • the selecting unit 91 is configured to determine a physical device that supports both the PGW function and the SGW function, and select the physical device as the PGW of the Mobile Relay.
  • the selection unit 91 is used to:
  • the information about the PGW pre-configured by the Mobile Relay is obtained from the subscription information of the local or Mobile Relay.
  • the PGW is a physical device that supports both the PGW function and the SGW function.
  • the PGW is selected as the PGW of the Mobile Relay.
  • the selection unit 91 is used to:
  • Obtaining the SGW query result list and the PGW result list by querying the domain name service system DNS, determining the device identifiers that appear in the SGW query result list and the PGW result list, and determining the gateway device corresponding to the device identifier to simultaneously support the PGW function and SGW-enabled physical device.
  • the Relay-UE MME further includes:
  • the indicating unit 92 is configured to send information about the PGW and the SGW capability indication information to the Mobile Relay.
  • the SGW capability indication information is used to indicate that the PGW supports the SGW function.
  • the indication unit 92 is configured to:
  • the receiving unit receives the attach request sent by the Mobile Relay, the device accepts the Attach Accept message, and sends the PGW information and the SGW capability indication information to the Mobile Relay; If the receiving unit receives the PDN connection request sent by the Mobile Relay, the PGW information and the SGW capability indication information are sent to the Mobile Relay by activating an ACTIVATE DEFAULT EPS BEARER CONTEXT REQUEST message.
  • the selection unit 91 is further configured to:
  • the SGW is also selected for the Mobile Relay;
  • the Relay-UE MME further includes:
  • a context establishing unit 93 configured to trigger after the selecting unit selects the PGW and the SGW for the Mobile Relay
  • the SGW and the PGW establish a bearer context for the Mobile Relay.
  • an embodiment of the present invention further provides an 0 AM, where the OAM includes:
  • the receiving unit 101 is configured to receive a configuration information request message sent by the Mobile Relay.
  • the indicating unit 102 is configured to send the configuration information of the Mobile Relay to the Mobile Relay, where the configuration information includes a packet data gateway PGW configured for the Mobile Relay and a service gateway SGW capability indication information, where
  • the PGW is an entity device that supports both the PGW function and the SGW function, and the SGW capability indication information is used to indicate the
  • the PGW supports the SGW function.
  • an embodiment of the present invention further provides a Mobile Relay
  • the mobile relay includes: a receiving unit 101, configured to receive information about a PGW of the Mobile Relay and SGW capability indication information sent by the Relay-UE MME or the OAM, where The SGW capability indication information is used to indicate that the PGW supports the SGW function, and the indication unit 102 is configured to send the information of the PGW and the SGW capability indication information to the User-UE MME.
  • the indication unit 102 is configured to:
  • the S1 AP message After receiving the access request sent by the terminal, the S1 AP message is applied to the uplink related S1 interface of the terminal, and the PGW information and the SGW capability indication information are sent to the User-UE MME.
  • the indication unit 102 is further configured to:
  • the access request sent by the terminal is received, and the terminal related uplink S1 is sent to the User-UE MME.
  • the AP message is sent to notify the User-UE MME that the terminal has accessed the network through the Mobile Relay.
  • the embodiment of the present invention further provides a User-UE MME, where the User-UE MME includes: a receiving unit 111, configured to receive information about the Mobile Relay packet data gateway PGW and the serving gateway SGW capability sent by the Mobile Relay. Instructing information, the SGW capability indication information is used to indicate that the PGW supports the SGW function; the address information of the PGW and the association relationship between the SGW capability indication information and the Mobile Relay are saved; the selecting unit 112 is configured to determine, according to the association relationship, the PGW to support the SGW function, And select the PGW as the interface The SGW of the terminal that enters the Mobile Relay.
  • a receiving unit 111 configured to receive information about the Mobile Relay packet data gateway PGW and the serving gateway SGW capability sent by the Mobile Relay. Instructing information, the SGW capability indication information is used to indicate that the PGW supports the SGW function; the address information of the PGW and the association relationship between the SGW capability indication information and the Mobile Relay are saved; the selecting unit 112 is configured to
  • the receiving unit 111 is configured to: receive the PGW information and the SGW capability indication information during the SI interface establishment process or the S1 interface update process initiated by the Mobile Relay; the selecting unit 112 is configured to: subsequently receive the terminal sent by the Mobile Relay After the S1 AP message is applied to the uplink S1 interface, the PGW is supported by the PGW according to the association relationship, and the PGW is selected as the SGW of the terminal that accesses the Mobile Relay; or
  • the receiving unit 111 is configured to: receive the information about the PGW and the SGW capability indication information by using the terminal related uplink S1 AP message sent by the Mobile Relay; the selecting unit 112 is configured to: after receiving the uplink S1AP message related to the terminal, according to the association The relationship determines that the PGW supports the SGW function, and selects the PGW as the SGW of the terminal accessing the Mobile Relay.
  • the User-UE MME further includes:
  • the session establishing unit 113 is configured to use the address information of the PGW as the address information of the SGW of the terminal that accesses the Mobile Relay, and send a session establishment request to the SGW according to the address information.
  • the beneficial effects of the present invention include:
  • the Relay-UE MME selects a physical device that supports both the PGW function and the SGW function as the PGW of the Mobile Relay during the network attachment or PDN connection establishment initiated by the Mobile Relay; and the Relay-UE MME Sending the information of the PGW and the SGW capability indication information to the Mobile Relay, or after receiving the configuration information request message sent by the Mobile Relay, the OAM sends the information including the PGW and the configuration information of the SGW capability indication information to the Mobile Relay; Then, the Mobile Relay sends the PGW address information and the SGW capability indication information to the User-UE MME.
  • the User-UE MME determines that the PGW supports the SGW function according to the received information, and selects the PGW as the terminal that accesses the Mobile Relay. SGW.
  • the PGW ie, the Relay-UE PGW
  • the SGW ie, the User-UE SGW
  • the PGW selected by the Mobile Relay on the network side
  • the SGW ie, the User-UE SGW
  • the UE under the Mobile Relay are located in the same physical device, and then, in the UE Downstream data routing path: User-UE PGW-> User-UE SGW-> Relay-UE PGW-> Relay-UE SGW-> Donor e B-> Mobile Relay -> User-UE, User-UE SGW to Relay-
  • the transmission distance of the UE PGW is almost zero, so that the optimization of the downlink data routing path of the UE is guaranteed, because the routing path of the downlink data changes with the movement of the Mobile Relay, but the Relay-UE in the mobile relay process
  • the PGW
  • the invention ensures the optimization of the data routing of the UE under the Mobile Relay after the introduction of the Mobile Relay, which is beneficial to save the transmission resources on the network side, and the other party is beneficial to reduce the data transmission delay of the UE.
  • embodiments of the present invention can be provided as a method, system, or computer program.
  • Product may take the form of an entirely hardware embodiment, an entirely software embodiment, or a combination of software and hardware.
  • present invention is in the form of a computer program product embodied on one or more computer-usable storage media (including but not limited to disk storage and optical storage, etc.) in which computer usable program code is embodied.
  • the computer program instructions can also be stored in a computer readable memory that can direct a computer or other programmable data processing device to operate in a particular manner, such that the instructions stored in the computer readable memory produce an article of manufacture comprising the instruction device.
  • the apparatus implements the functions specified in one or more blocks of a flow or a flow and/or block diagram of the flowchart.
  • These computer program instructions can also be loaded onto a computer or other programmable data processing device such that a series of operational steps are performed on a computer or other programmable device to produce computer-implemented processing for execution on a computer or other programmable device.
  • the instructions provide steps for implementing the functions specified in one or more of the flow or in a block or blocks of a flow diagram.

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  • Engineering & Computer Science (AREA)
  • Computer Security & Cryptography (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Mobile Radio Communication Systems (AREA)

Abstract

L'invention porte sur un procédé, un système et un dispositif d'indication d'informations et de sélection de passerelle, concernant le domaine technique des communications sans fil et destinés à résoudre le problème selon lequel l'optimisation des chemins de routage de données de liaison descendante des terminaux sous des dispositifs relais mobiles (relais mobile) ne peut pas être garantie. Selon la présente demande, une entité de gestion de mobilité de terminal relais (MME d'UE relais) ou un système d'exploitation et de maintenance (OAM) envoie des informations concernant une passerelle de données par paquets (PGW) d'un relais mobile et des informations d'indication de capacité concernant une passerelle de desserte (SGW) au relais mobile ; le relais mobile envoie les informations reçues à une entité de gestion de mobilité d'équipement utilisateur (MME d'UE utilisateur) ; et la MME d'UE utilisateur sélectionne ladite PGW en tant que SGW du terminal accédant au relais mobile. Par application de la présente demande, les performances d'optimisation du chemin de routage de données de liaison descendante peuvent être garanties.
PCT/CN2012/078222 2011-10-26 2012-07-05 Procédé, système et dispositif d'indication d'informations et de sélection de passerelle Ceased WO2013060164A1 (fr)

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