WO2013037271A1 - Procédé et système d'accès multiple - Google Patents

Procédé et système d'accès multiple Download PDF

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Publication number
WO2013037271A1
WO2013037271A1 PCT/CN2012/080902 CN2012080902W WO2013037271A1 WO 2013037271 A1 WO2013037271 A1 WO 2013037271A1 CN 2012080902 W CN2012080902 W CN 2012080902W WO 2013037271 A1 WO2013037271 A1 WO 2013037271A1
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WIPO (PCT)
Prior art keywords
request
access network
multiple access
access
indication
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PCT/CN2012/080902
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English (en)
Chinese (zh)
Inventor
毕以峰
周晓云
宗在峰
卢飞
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中兴通讯股份有限公司
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Publication of WO2013037271A1 publication Critical patent/WO2013037271A1/fr

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Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W76/00—Connection management
    • H04W76/10—Connection setup
    • H04W76/12—Setup of transport tunnels

Definitions

  • the present invention relates to the field of mobile communications technologies, and in particular, to a multiple access method and system. Background technique
  • the 3rd Generation Partnership Project (3GPP) Evolved Packet System is mainly composed of an access network and an evolved packet core network (EPC).
  • the EPS access network may be an E-UTRAN (Evolved Universal Terrestrial Radio Access Network) or the like; the EPC includes: MME (Mobility Management Entity), SGSN (Serving GPRS (General Packet Radio Service) Support Node), S-GW (Serving Gateway), P-GW (Packet Data Network Gateway), HSS (Home Subscriber Server), 3GPP AAA Server (3GPP Authentication and Authorization Accounting Server), PCRF (Policy and Charging Rules Function) and other supporting nodes.
  • MME Mobility Management Entity
  • SGSN Serving GPRS (General Packet Radio Service) Support Node
  • S-GW Serving Gateway
  • P-GW Packet Data Network Gateway
  • HSS Home Subscriber Server
  • 3GPP AAA Server 3GPP Authentication and Authorization Accounting Server
  • PCRF Policy and Charging Rules Function
  • the E-UTRAN has an eNB (evolved NodeB), and the UTRAN has an NB (NodeB, base station); the MME is responsible for UE (User Equipment) mobility management from the EUTRAN, NAS (Non Access) Control plane related work such as processing of Stratum, non-access stratum signaling and management of user context; SGSN is responsible for mobility management, non-access stratum signaling processing and user context management of terminal UE access from E-UTRAN
  • the S-GW is an access gateway device connected to the E-UTRAN, which forwards data between the E-UTRAN and the P-GW, and is responsible for buffering the paging waiting data.
  • the P-GW is a border gateway between the 3GPP Evolved Packet System and the PDN (Packet Data Network), and is responsible for accessing the user terminal to the PDN, and forwarding data between the EPS and the PDN.
  • the S-GW and the P-GW are connected through an S5/S8 interface, and the GTP (General Packet Radio Service Tunneling Protocol) or PMIPv6 (Proxy Mobile IP version 6,) is used. Proxy Mobile IP Version 6) Protocol.
  • the PCRF is a policy and charging rule function entity.
  • IP service network Provides service information
  • gateway device in the network through the Gx/Gxa/Gxb/Gxc interface, and is responsible for initiating IP (Internet). Protocol, Internet Protocol)
  • IP Internet Protocol
  • the EPS also supports the access of the UE through non-3GPP systems other than the E-UTRAN, wherein the access of the non-3GPP system is implemented through the S2a/S2b/S2c interface (the S2c access is not related to the present invention, so the figure does not Shown), at this time, the P-GW acts as a data anchor for access by the 3GPP system and access by the non-3GPP system.
  • non-3GPP systems are classified into Trusted Non-3GPP IP Access and Untrusted Non-3GPP IP Access.
  • the trusted non-3GPP IP access network can be directly connected to the P-GW through the S2a interface; the untrusted non-3GPP IP access network needs to be connected to the P-GW via an ePDG (Evolved Packet Data Gateway), ePDG and The interface between P-GWs is S2b. Both the S2a/S2b interface can use the GTP or PMIPv6 protocol.
  • ePDG Evolved Packet Data Gateway
  • EPC supports UEs to be connected simultaneously through the same P-GW through multiple access networks.
  • the terminal can simultaneously access the same P-GW through the 3GPP access network (EUTRAN access network or UTRAN access network) and the trusted non-3GPP access network (such as WLAN access network), P- The GW simultaneously establishes a tunnel with the S-GW and a tunnel with the non-3GPP access gateway, or the terminal can simultaneously pass through the 3GPP access network (the EUTRAN access network or the UTRAN access network) and the untrusted non-3GPP access network (such as the WLAN).
  • the 3GPP access network the EUTRAN access network or the UTRAN access network
  • the untrusted non-3GPP access network such as the WLAN
  • the access network is simultaneously connected to the same P-GW, and the P-GW simultaneously establishes a tunnel with the S-GW and a tunnel with the ePDG.
  • the UE is attached to the EPC through multiple access networks.
  • the P-GW allocates an IP address to the UE, and an IP connection exists between the UE and the PDN (as shown by the dotted line in FIG. 1). Since different services are applicable to different network transmissions, the multiple access technologies can select the applicable access network transmission services according to the characteristics of the services, and multiple access networks can share the network load and avoid network congestion.
  • the P-GW defined in the current protocol supports the initial access and the handover access operation of the terminal UE, and how to notify the P-GW that the current access is different from the initial access and the handover access
  • the "multiple access scenario" is an unresolved issue in the protocol. If the problem is not resolved, the P-GW may not be aware of the current erroneous operation for the multiple access scenario, such as: releasing the connection of the established access network or denying access to the current access network.
  • the technical problem to be solved by the present invention is to provide a multi-access method and system, which avoids the influence and modification on a non-3GPP network.
  • the present invention provides a multiple access method, the method comprising: a user equipment (UE) accessing a packet data network gateway (P-GW) through a third generation partnership project (3GPP) access network Sending a multiple access indication, informing the P-GW to perform multiple access binding;
  • UE user equipment
  • P-GW packet data network gateway
  • 3GPP third generation partnership project
  • the P-GW performs multiple access binding with two or more access networks according to the multiple access indication.
  • the UE sends a multi-access indication to the P-GW through the 3GPP access network, including:
  • the UE When the 3GPP access network is used as the first access network, and the non-3GPP access network is used as the second access network, the UE performs an attach operation, a PDN connection establishment operation, or an activated PDP context operation of the 3GPP access network.
  • the P-GW sends a multiple access indication
  • the UE passes the 3GPP.
  • the request bearer resource modification operation of the access network, the tracking area update TAU operation, or the special multi-access indication reporting operation, and the multi-access indication is sent to the P-GW.
  • the UE sends a multi-access indication to the P-GW through the 3GPP access network, including: when the non-3GPP access network is used as the first access network, and when the 3GPP access network is used as the second access network, the UE Attachment operation initiated by the 3GPP access network, PDN connection establishment operation, or activation
  • a multi-access indication is sent to the P-GW.
  • the P-GW performs multiple access binding when receiving the access binding request of the second access network according to the multiple access indication.
  • the multiple access indication includes:
  • Attachment request PDN connection establishment request, activated packet data protocol (PDP) context request, newly defined value for cell request type (request type) or attach request type (attach type); create session request, proxy binding update (PBU) In the message, a newly defined value for the handover indication;
  • PDP packet data protocol
  • an attach request a PDN connection establishment request, an activation PDP context request, a secondary PDP context activation request message, a create session request, a modify bearer request, a bearer resource command, a request bearer resource modification, a new cell in a PBU message, or a new Increase the indicator position;
  • an attach request a PDN connection establishment request, an activation PDP context request, a secondary PDP context activation request, a create session request, a modify bearer request, a bearer resource command, a request bearer resource modification, a newly defined cell in a PCO in a PBU message, Or indicator bit.
  • performing multiple access binding including:
  • the P-GW receives a create session request sent by the second access network, or a PBU message; and the P-GW performs the tunnel binding relationship with the first access network, that is, the GTP tunnel or the PMIP tunnel. Establish a GTP or PMIP tunnel binding relationship with the second access network.
  • the present invention further provides a multiple access system, the system comprising: a multiple access indication sending unit in a UE, a multiple access indication transmitting unit in a network element of a 3GPP access network, and multiple connections in a P-GW Into the binding unit,
  • the multiple access indication sending unit is configured to: send a multiple access indication to the P-GW by using the 3GPP access network network element, and notify the P-GW to perform multiple access binding;
  • the multiple access indication transmitting unit is configured to: transmit the received multiple access indication to the
  • the multiple access binding unit is configured to: perform multiple access binding with two or more access networks according to the multiple access indication.
  • the multiple access indication sending unit and the multiple access indication transmitting unit are set as:
  • the multiple access indication sending unit and the multiple access indication transmitting unit are connected by the 3GPP access network, PDN connection establishment operation or activation PDP context operation, and sending a multi-access indication to the P-GW;
  • the multiple access indication sending unit and The multiple access indication transmitting unit sends a multiple access indication to the P-GW by using a request bearer resource modification operation, a tracking area update TAU operation, or a dedicated multiple access indication reporting operation of the 3GPP access network;
  • the multiple access indication sending unit and the multiple access indication transmitting unit are initiated by using the 3GPP access network.
  • the attach operation, the PDN connection setup operation, or the activation of the PDP context operation a multi-access indication is sent to the P-GW.
  • the multiple access indication includes:
  • Attachment request PDN connection establishment request, activated packet data protocol (PDP) context request, newly defined value for cell request type (request type) or attach request type (attach type); create session request, proxy binding update (PBU) In the message, a newly defined value for the handover indication;
  • PDP packet data protocol
  • an attach request a PDN connection establishment request, an activation PDP context request, a secondary PDP context activation request message, a create session request, a modify bearer request, a bearer resource command, a request bearer resource modification, a new cell in a PBU message, or a new Increase the indicator position;
  • an attach request a PDN connection establishment request, an activation PDP context request, a secondary PDP context activation request, a create session request, a modify bearer request, a bearer resource command, a request bearer resource modification, a newly defined cell in a PCO in a PBU message, Or indicator bit.
  • the multiple access binding unit is configured to: perform multiple access binding when receiving the access binding request of the second access network according to the multiple access indication.
  • the multiple access binding unit is configured to: perform multiple access binding in the following manner: Upon receiving the create session request sent by the second access network, or the PBU message, the multiple access binding unit performs the tunnel binding relationship with the first access network, that is, the GTP tunnel or the PMIP tunnel. Establish a GTP or PMIP tunnel binding relationship with the second access network.
  • the solution of the embodiment of the present invention enables the P-GW to learn that the access scenario of the terminal is a multiple access scenario according to the received multiple access indication, so that when the binding request of the second access network is received, the P-GW performs the binding request.
  • Multi-access binding enables multiple access of terminals, avoiding the impact and modification of non-3GPP networks.
  • FIG. 1 is a schematic diagram of a system architecture of an EPS in the related art
  • Embodiment 3 is a schematic flow chart of Embodiment 3 of the present invention.
  • Embodiment 4 is a schematic flow chart of Embodiment 4 of the present invention.
  • Embodiment 5 is a schematic flow chart of Embodiment 5 of the present invention.
  • FIG. 6 is a schematic block diagram of a multiple access system in accordance with an embodiment of the present invention. Preferred embodiment of the invention
  • the present embodiment provides a method for implementing multiple access
  • the multi-access indication is sent to the P-GW through the signaling of the 3GPP system, and the P-GW learns the terminal according to the received multiple access indication.
  • the access scenario is a multiple access scenario.
  • the P-GW performs multiple bindings to implement multiple accesses of the terminal.
  • the P-GW performs multiple binding, which means that the P-GW performs the tunnel binding relationship with the first access network, that is, the GTP tunnel or the PMIP tunnel, and establishes a GTP or PMIP tunnel binding with the second access network. Relationship.
  • the first access network and the second access network mentioned in the embodiment of the present invention are related to a PDN connection or a PDP context, and in a PDN connection/PDP context,
  • the order of access by the 3GPP side and the non-3GPP side determines whether the PDN is connected to the first access network or the second access network.
  • the terminal first attaches to 3GPP, establishes PDN connection 1, attaches to non-3GPP, establishes multiple access of PDN connection 1, and then initiates PDN connection 2 in non-3GPP, and then establishes PDN connection in 3GPP. Multiple access.
  • 3GPP and non-3GPP are the first access network and the second access network, respectively
  • PDN connection 2 3GPP and non-3GPP are the second access network and the first access network, respectively.
  • the multiple access method provided in this embodiment is applied to an EPS, and the following technical solutions are used:
  • the UE sends a multiple access indication to the P-GW through the 3GPP access network, and notifies the P-GW to perform multiple access binding.
  • the P-GW performs multiple access binding with two or more access networks according to the multiple access indication.
  • the UE sends multiple access indications to the P-GW through the 3GPP access network, including the following methods:
  • the UE sends a multi-access indication to the P-GW through an attach operation of the 3GPP access network, a PDN connection setup operation, or an activation PDP context operation;
  • the UE can modify the request bearer resources of the 3GPP access network before the UE initiates the access to the non-3GPP access network.
  • the non-3GPP access network is used as the first access network and the 3GPP access network is used as the second access network
  • the UE initiates an attach operation, a PDN connection establishment operation, or activates a PDP context operation initiated by the 3GPP access network
  • a multi-access indication is sent to the P-GW.
  • Embodiments of the present invention will be described in detail below with reference to the accompanying drawings. It should be noted that the following embodiments are applicable to the E-UTRAN network of the 3GPP network and the WLAN/fixed broadband network (fixed network) as multiple access scenarios of the two access networks, and also applicable to the UTRAN network of the 3GPP network. And the WLAN/fixed broadband network (fixed network) is used as the multiple access scenario of the two access networks; and, in the case of no conflict, the embodiments in the present application and the features in the embodiments may be arbitrarily combined with each other.
  • the embodiment is based on the S5/8 interface, and the S2a interface between the non-3GPP access gateway and the P-GW, and the S2b interface between the ePDG and the P-GW are all using the GTP protocol.
  • the scenario, the specific steps of the process are described as follows:
  • Step 201 The UE decides to attach to the EPC through the 3GPP access network, and then initiates an attach setup operation. After the UE has accessed the EPC network, it also needs to establish an additional PDN connection, and then initiates a PDN connection establishment operation.
  • Step 202 The UE sends an attach request/PDN connection establishment request to the MME, and carries a "multiple access indication" in the message.
  • Step 203 The UE requests the HSS/AAA to perform user access authentication through the MME.
  • Step 204 The MME sends a "Create Session Request” message to the S-GW, and the S-GW sends a "Create Session Request” message to the P-GW, where the message carries a "Multiple Access Indication” for indicating multiple access.
  • Step 205 The P-GW and the PCRF perform an IP-CAN session establishment operation.
  • Step 206 As a response message to step 204, the P-GW sends a "Create Session Response" message to the S-GW, and the S-GW sends a "Create Session Response” message to the MME.
  • Step 207 The subsequent steps of the attach/PDN connection establishment.
  • Step 208 Thereafter, the UE decides to initiate an access from the non-3GPP network, and then initiates an attach/PDN connection setup operation.
  • This step belongs to non-3GPP internal operations and is related to different non-3GPP systems.
  • Step 209 The non-3GPP access gateway /ePDG (untrusted non-3GPP access network access) sends a "Create Session Request" message to the P-GW;
  • Step 210 After receiving the request message of step 209, the P-GW receives the multi-access indication in step 204, and the P-GW accepts the request of step 209 here, and retains the tunnel relationship established in step 204 and step 205. In this way, the tunnel binding relationship between the P-GW and multiple access gateways is implemented, and the terminal UE implements multiple access. After this step, the tunnels of the P-GW and the 3GPP access network and the non-3GPP access network are both active, and the P-GW can simultaneously send data packets to the two access networks.
  • Step 211 The P-GW sends a create session response message to the non-3GPP access gateway/ePDG.
  • the terminal UE implements multiple access.
  • the P-GW may send the indication information to the end. UE.
  • the P-GW sends a "Create Session Response”
  • the S-GW sends a "Create Session Response” message to carry the indication.
  • the indication information indicates whether the P-GW accepts the multiple access request and reflects the P-GW's support capability for multiple access.
  • the MME sends the indication to the UE.
  • the UE receives the indication information fed back from the P-GW, and can determine whether the P-GW accepts the access request according to the following: if the indication is fed back, indicating that the P-GW accepts multiple access; if there is no return indication, indicating that the P-GW Multiple access operations were not accepted.
  • the indication information in steps 202 and 204 can be perceived by the MME and the S-GW, if the MME and the S-GW support multiple access, the indication information is further forwarded to the next step, if the MME and the S are - The GW does not support multiple access, and the MME and the S-GW will not continue to deliver the indication information to the next information.
  • whether the next-level network element receives the indication information also indicates whether the upper-level network element supports multiple access functions, and thus, multiple access
  • the indication information is transmitted to the P-GW through the steps 202 and 204.
  • the indication information of whether the P-GW supports the multiple access capability is further transmitted to the UE through the steps 206 and 207. As long as the UE receives the indication information, it proves that the MME, the SGW and the P-GW support the information. The access operation, otherwise the UE does not receive the indication information, and the UE can determine that the system does not support multiple access operations.
  • This embodiment is basically the same as the first embodiment.
  • the main difference between the two is that the S5/8, S2a, and S2b interfaces can use the PMIPv6 protocol.
  • the messages of steps 204 and 206, steps 209 and 211 in the flow of FIG. 2 may be messages of the PMIPv6 protocol, or may be PBU (Proxy Binding). Update, proxy binding update) and PBA (Proxy Binding Acknowledgement) a pair of messages.
  • Steps 204 and 206 Steps 209 and 211 are either PMIP messages, or both are GTP messages (ie, Embodiment 1); or Steps 204 and 206 are GTP messages, Steps 209 and 211 are PMIP messages, or Step 204 and 206 is a PMIP message, and steps 209 and 211 are GTP messages.
  • the following embodiments are similar, that is, when the S5/8 interface, the S2a interface, or the S2b interface is involved, the GTP protocol and the PMIPv6 protocol can be used.
  • Embodiment 1 and Embodiment 2 are to send a multiple access indication to the P- when the terminal UE attaches to the 3GPP network or establishes a PDN connection from the 3GPP network.
  • the multiple access only sends the multiple access indication to the P-GW from the 3GPP access network before the terminal initiates the non-3GPP access, and the P-GW receives the indication, and determines Currently, it is a multiple access scenario. Thereafter, the P-GW performs multiple bindings as long as the P-GW receives a binding request from a non-3GPP access network gateway or ePDG.
  • Step 301 The UE has attached to the EPC through the 3GPP access network, and one or more PDN connections may have been established.
  • the multi-access indication is not carried.
  • Step 302 The UE decides to access from the non-3GPP access network to establish multiple access.
  • Step 303-307 The UE sends a first request message carrying the "multiple access indication" to the MME via the 3GPP access network before initiating the attach/PDN connection to the non-3GPP access network.
  • Step 304 The MME sends a second request message carrying the "multiple access indication" to the S-GW, and the S-GW receives the message and sends it to the P-GW.
  • Step 305 The P-GW reserves the multiple access indication in the second request message.
  • Step 306 The P-GW sends a second response message to the S-GW, and the S-GW receives the second response message and then sends a response to the MME.
  • Step 307 The MME sends a response message to the UE.
  • Manner 1 The UE sends a "multiple access indication" to the P-GW through an existing request bearer resource modification operation.
  • the first request message between the UE and the MME, the second request message between the MME and the S-GW, and between the S-GW and the P-GW may be: "Request bearer resource modification" of the NAS message family.
  • the message, and the "Host Resource Command" message for the GTP message family may be: "Request bearer resource modification" of the NAS message family.
  • the P-GW After receiving the multiple access indication message, the P-GW sends a "bearer resource rejection" message of the GTP message family to the S-GW through steps 306-307, or initiates a network initiated bearer resource modification/update/activation operation. , responding to steps 303-304.
  • Manner 2 The UE sends the "Multiple Indication" to the P-GW through the existing Tracking Area Update (TAU).
  • TAU Tracking Area Update
  • the first request message between the UE and the MME, the second request message between the MME and the S-GW, and between the S-GW and the P-GW may be: a "TAU” message of the NAS message family, and The "Modify Bearer Request” message for the GTP message family.
  • the P-GW After receiving the multiple access indication message, the P-GW sends a "Modify Bearer Response" message of the GTP message family to the S-GW through steps 306-307, and responds to steps 303-304.
  • Manner 3 Reporting the escalation operation through a dedicated multi-access indication.
  • a NAS (Non-Access Stratum) message is newly set up between the UE and the MME, and a multi-access indication is transmitted between the MME and the S-GW, the S-GW, and the P-GW through a new GTP message.
  • the corresponding response message is also in the response message.
  • Step 308 Thereafter, the UE initiates an access from a non-3GPP network, either an attach operation or a PDN connection setup operation.
  • Step 309 The non-3GPP access gateway/ePDG sends a "create session request" or a PBU message (the two messages are collectively referred to as a binding request) to the P-GW.
  • Step 310 After receiving the request message of step 309, the P-GW receives the multi-access indication in step 304, and the P-GW accepts the request of step 309 and the tunnel relationship with the S-GW, thus implementing The tunnel binding relationship between the P-GW and multiple access gateways, and the terminal UE implements multiple access.
  • the tunnels of the P-GW and the 3GPP access network and the non-3GPP access network are both active, and the P-GW can simultaneously send data packets to the two access networks.
  • Step 311 The P-GW sends a create session response message to the non-3GPP access gateway/ePDG.
  • the terminal UE implements multiple access.
  • step 309 and step 311 are PBU and PBA, respectively.
  • the S-GW After receiving the "bearer resource command" sent by the MME, the S-GW sends a multi-access indication to the PCRF through the "gateway control session” operation, and the PCRF sends the multi-access indication to the P through the "IP-CAN session” operation. -GW. There is no direct interaction between the S-GW and the P-GW;
  • the S-GW After receiving the "bearer resource command" sent by the MME, the S-GW sends a multiple access indication to the P-GW through the "PBU" message, and the PGW saves the multiple access indication and responds to the S-GW with the PBA message.
  • This embodiment describes a scenario in which a terminal establishes multiple access through UTRAN and WLAN.
  • the UE first accesses from the UTRAN, and carries the multi-access indication to the SGSN through an attach request message or an active PDP context request message during an attach procedure or a PDP (Packet Data Protocol) context activation process.
  • the SGSN then carries the message to the S-GW through the "Create Session Request" message, and then the S-GW sends a P-GW.
  • Step 401 The UE decides to initiate an attach or PDN connection setup operation from the 3GPP access network.
  • Step 402 The UE sends an attach request/activation PDN context request to the SGSN, and carries a "multiple access indication" in the message.
  • Step 403 The UE requests the HSS/AAA to perform user access authentication through the SGSN.
  • Step 404 The SGSN sends a "Create Session Request” message to the S-GW, and the S-GW sends "Create”
  • the "session request” message is sent to the P-GW, and the message carries a "multiple access indication" for indicating multiple access.
  • Step 405 The P-GW and the PCRF perform an IP-CAN session establishment operation.
  • Step 406 As a response message to step 404, the P-GW sends a "Create Session Response" message to the S-GW, and the S-GW sends a "Create Session Response” message to the SGSN.
  • Step 407 Follow-up steps to attach/activate the PDN context.
  • Step 408 Thereafter, the UE decides to initiate an access from the non-3GPP network, and then initiates an attach/PDN connection setup operation.
  • Step 409 The non-3GPP access gateway /ePDG (untrusted non-3GPP access network access) sends a "Create Session Request" message to the P-GW;
  • Step 410 After receiving the request message of step 409, the P-GW receives the multi-access indication in step 404, and the P-GW accepts the request of step 409 here, and retains the tunnel relationship established in step 404 and step 405. In this way, the tunnel binding relationship between the P-GW and multiple access gateways is implemented, and the terminal UE implements multiple access.
  • the tunnels of the P-GW and the 3GPP access network and the non-3GPP access network are activated, and the P-GW can simultaneously send data packets to the two access networks.
  • Step 411 The P-GW sends a create session response message to the non-3GPP access gateway/ePDG.
  • the terminal UE implements multiple access.
  • this embodiment actually includes multiple scenarios corresponding to the foregoing embodiment 1-2.
  • Steps 404-406 describe the description of the second embodiment.
  • the main difference between this embodiment and the foregoing Embodiments 1 and 2 is that, in this embodiment, the UE first accesses from the UTRAN, and in the attach/PDP context activation process, the multiple access indication is passed through the attach request message/activate PDP.
  • the Context Request message is carried to the SGSN.
  • the first embodiment and the second embodiment are that the UE accesses through the E-UTRAN, and the multi-access indication is passed through the attach request message/PDP connection establishment request message in the attach/PDP connection establishment process.
  • the main difference between this embodiment and the foregoing embodiment 2 is that the MME can be changed to the SGSN, and the rest of the processes are completely the same.
  • the UE sends the SGSN an enhanced secondary PDP context activation request message, or a new message between the UE and the SGSN.
  • the message after the SGSN is the same as that of the third embodiment.
  • the scenario based on this embodiment is a scenario in which the terminal first accesses from non-3GPP and then establishes multiple access from 3GPP.
  • the indication information of the multiple access is carried by the UE to the P-GW through the second access network, that is, the attach/PDN connection establishment/PDP context activation operation of the 3GPP access network.
  • Step 501 The terminal has accessed from the non-3GPP, and one or more PDN connections are established;
  • Step 501a The UE initiates an attach, or a PDN connection setup, or a PDP context activation from a 3GPP access network (EUTRAN or UTRAN).
  • EUTRAN 3GPP access network
  • Step 502 The UE sends an attach request, or a PDN connection establishment request, or a PDP context activation request to the MME/SGSG, where the request message carries multiple access indication information.
  • Step 503 If the initial access to the 3GPP system is performed, the user access authentication operation is performed first.
  • Step 504 The MME/SGSN sends a "Create Session Request" to the S-GW, and the S-GW sends a "Create Session Request” or "PBU” message to the P-GW, and the message carries multiple access indication information.
  • Step 505 The P-GW and the PCRF perform an IP-CAN session modification operation.
  • Step 505a The P-GW receives the binding request message from the S-GW, and performs a multi-binding operation according to the multiple access indication information.
  • Step 506 The P-GW sends a session response or a PBA message to the S-GW, and the S-GW sends a session response message to the MME.
  • Step 507 Attach/PDN Connection Establishment/PDP Context Activation Operation Subsequent steps are completed. Through the above steps, the terminal UE implements multiple access.
  • the specific implementation of the foregoing steps 504-506 can be referred to the detailed description in the foregoing embodiments, and details are not described herein again.
  • the carrying manner may be implemented in multiple ways.
  • the multiple access indication may be a newly added cell, or a newly defined flag bit in an existing cell, or a newly defined value of an existing cell or an existing flag bit ( value ).
  • the multiple access indication may be a newly added cell, or a newly defined flag bit in an existing cell, or a newly defined value of an existing cell or an existing flag bit ( value ).
  • the multiple access indication may be a newly added cell, or a newly defined flag bit in an existing cell, or a newly defined value of an existing cell or an existing flag bit ( value ).
  • the multiple access indication may be in the message "attach request/PDN connection establishment request/activation PDP context request” message.
  • a newly defined value indicating multiple access in the "create session request” message or the PBU message, a newly defined value indicating multiple access to the "handover indication" .
  • a request/activation PDP context request/secondary PDP context activation request message, and a "create session request" message or a PBU message may be established in the attach request/PDN connection establishment
  • the multi-access indication is carried, because the existing PC0 message is not affected by the MME and the S-GW, which can reduce the d, on the existing system. influences;
  • a new cell or indicator bit may be added for transmitting the multiple access indication.
  • the embodiment of the present invention further provides a multiple access system, where the system mainly includes a multiple access indication sending unit in the UE, and a 3GPP access network element (such as MME, S-GW). , and/or SGSN, etc.), a multiple access indication transmission unit, and a multiple access binding unit in the P-GW, where:
  • the multiple access indication sending unit is configured to send, by using a 3GPP access network network element, a multi-access indication to the P-GW, to notify the P-GW to perform multiple access binding;
  • the multiple access indication transmitting unit is configured to transmit the received multiple access indication to the P-GW;
  • the multiple access binding unit is configured to perform multiple access binding with two or more access networks according to the multiple access indication.
  • multiple access indication sending unit and the multiple access indication transmitting unit are used to:
  • the multiple access indication sending unit and the multiple access indication transmitting unit are connected by the 3GPP access network, PDN connection establishment operation or activation PDP context operation, and sending a multi-access indication to the P-GW;
  • the multiple access indication sending unit and The multiple access indication transmitting unit sends a multiple access indication to the P-GW by using a request bearer resource modification operation, a tracking area update TAU operation, or a dedicated multiple access indication reporting operation of the 3GPP access network;
  • the multiple access indication sending unit and the multiple access indication transmitting unit are initiated by using the 3GPP access network.
  • the attach operation, the PDN connection setup operation, or the activation of the PDP context operation a multi-access indication is sent to the P-GW.
  • the multiple access indication specifically includes:
  • Attachment request PDN connection establishment request, activated packet data protocol (PDP) context request, newly defined value for cell request type (request type) or attach request type (attach type); create session request, proxy binding update (PBU) In the message, a newly defined value for the handover indication;
  • PDP packet data protocol
  • an attach request a PDN connection establishment request, an activation PDP context request, a secondary PDP context activation request message, a create session request, a modify bearer request, a bearer resource command, a request bearer resource modification, a new cell in a PBU message, or a new Increase the indicator position;
  • an attach request a PDN connection establishment request, an activation PDP context request, a secondary PDP context activation request, a create session request, a modify bearer request, a bearer resource command, a request bearer resource modification, a newly defined cell in a PCO in a PBU message, Or indicator bit.
  • the multiple access binding unit is configured to receive, according to the multiple access indication, When the second access network accesses the binding request, multiple access binding is performed.
  • the multiple access binding unit is configured to perform multiple access binding according to the following manner: when receiving a create session request sent by the second access network, or a PBU message, the multiple access binding unit The GTP or PMIP tunnel binding relationship with the second access network is established while maintaining a tunnel binding relationship with the first access network, that is, a GTP tunnel or a PMIP tunnel.
  • modules or steps of the present invention can be implemented by a general-purpose computing device, which can be concentrated on a single computing device or distributed over a network composed of multiple computing devices. Alternatively, they may be implemented by program code executable by the computing device, such that they may be stored in the storage device by the computing device and, in some cases, may be different from the order herein.
  • the steps shown or described are performed, or they are separately fabricated into individual integrated circuit modules, or a plurality of modules or steps are fabricated as a single integrated circuit module.
  • the invention is not limited to any particular combination of hardware and software.
  • the solution of the embodiment of the present invention enables the P-GW to learn that the access scenario of the terminal is a multiple access scenario according to the received multiple access indication, so that the binding request of the second access network is received.
  • multiple access binding is implemented, multiple accesses of the terminal are implemented, and the impact and modification on the non-3GPP network are avoided.

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

Abstract

Un procédé d'accès multiple comprend les étapes suivantes : un équipement d'utilisateur (UE) envoie une instruction d'accès multiple à une passerelle P-GW (passerelle de réseau en mode paquet de données) via un réseau d'accès de 3GPP (projet de partenariat de 3e génération) afin de notifier à la passerelle P-GW d'effectuer une liaison d'accès multiple ; et la passerelle P-GW effectue la liaison d'accès multiple avec deux réseaux d'accès ou avec plus de deux réseaux d'accès selon l'instruction d'accès multiple.
PCT/CN2012/080902 2011-09-14 2012-09-03 Procédé et système d'accès multiple WO2013037271A1 (fr)

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CN108307530B (zh) * 2016-09-30 2023-09-22 华为技术有限公司 一种会话连接建立方法、相关设备及系统
US20190313311A1 (en) * 2018-04-09 2019-10-10 Mediatek Inc. Apparatuses, service networks, and methods for handling plmn-specific parameters for an inter-plmn handover

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