WO2009097779A1 - Procédé, système et appareil d'accès au réseau fédérateur sae - Google Patents

Procédé, système et appareil d'accès au réseau fédérateur sae Download PDF

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Publication number
WO2009097779A1
WO2009097779A1 PCT/CN2009/070186 CN2009070186W WO2009097779A1 WO 2009097779 A1 WO2009097779 A1 WO 2009097779A1 CN 2009070186 W CN2009070186 W CN 2009070186W WO 2009097779 A1 WO2009097779 A1 WO 2009097779A1
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Prior art keywords
network
radio access
terminal
packet data
terrestrial radio
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PCT/CN2009/070186
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English (en)
Chinese (zh)
Inventor
Yingyan Shen
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Huawei Technologies Co., Ltd.
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Publication of WO2009097779A1 publication Critical patent/WO2009097779A1/fr

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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W76/00—Connection management
    • H04W76/10—Connection setup
    • H04W76/12—Setup of transport tunnels
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W80/00—Wireless network protocols or protocol adaptations to wireless operation
    • H04W80/04—Network layer protocols, e.g. mobile IP [Internet Protocol]

Definitions

  • the present invention relates to the field of System Architecture Evolution (SAE), and in particular, to a method, system and apparatus for accessing a SAE core network.
  • SAE System Architecture Evolution
  • the system architecture evolution/Long Term Evolution (ASE/LTE) architecture includes an LTE access network (eNodeB) and a SAE core network.
  • the SAE core network mainly includes a mobility management entity (Mobility Management). Entity, MME), Serving SAE Gateway (S-GW) and Packet Data Network SAE Gateway (P-GW).
  • MME mobility management entity
  • S-GW Serving SAE Gateway
  • P-GW Packet Data Network SAE Gateway
  • the SAE core network accesses the Serving GPRS Support Node (SGSN) device in the original 2G/3G mobile network, thereby accessing the original 2G/3G access.
  • SGSN Serving GPRS Support Node
  • GPRS is a General Packet Radio Service technology. So in fact, in this application, there are still complete 2G/3G mobile networks and SAE/LTE networks.
  • the existing network architecture can be seen in Figure 1.
  • the MME accesses the SGSN through the S3 interface
  • the S-GW accesses the SGSN through the S4 interface and accesses the UTRAN network through the S12 interface.
  • the Iu-U interface is used as the Iu-U interface in the direct tunnel.
  • the Iu interface is still available through the SGSN.
  • the access processing of the UMTS Terrestrial Radio Access Network (GSM EDGE Radio Access Network, UTRAN/GERAN) is still done by the SGSN.
  • GSM EDGE Radio Access Network UTRAN/GERAN
  • UMTS is an abbreviation for Universal Mobile Telecommunication System.
  • EDGE is an abbreviation for Enhanced Data Rate for GSM Evolution. If operators use the above architecture to implement multiple access network operations, they still need to maintain two core network devices (SAE MME/GW and UMTS/GPRS SGSN).
  • the technical problem to be solved by the embodiments of the present invention is to provide a method, a system, and a device for accessing a S AE core network, so that the UMTS terminal can directly access the SAE core network through the UTRAN, and can trigger the SAE core network to be
  • the terminal establishes a default bearer, which can provide an always-on function for the UMTS terminal.
  • a method for accessing a system architecture to evolve a core network which is implemented in a system including a general wireless communication system terrestrial radio access network and a system architecture evolution core network, the universal wireless communication system terrestrial radio access network directly through the interface Connected to the mobility management entity and the service gateway in the system architecture evolution core network, the method includes the following steps:
  • the mobility management entity performs network attach operation for a terminal accessing the terrestrial radio access network of the universal wireless communication system
  • the mobility management entity sends a packet data protocol context activation request to the universal wireless communication system terrestrial radio access network to initiate a packet data protocol activation procedure; and creates a default bearer for accessing the terminal of the universal wireless communication system terrestrial radio access network .
  • a network system comprising a universal wireless communication system terrestrial radio access network and a system architecture evolution core network, the universal wireless communication system terrestrial radio access network directly interacting with the mobility management entity in the core network of the system architecture through the interface
  • the serving gateway is connected, and the mobility management entity establishes a default bearer for the terminal accessing the universal wireless communication system terrestrial radio access network.
  • the network system of the access network architecture evolution core network including:
  • a first triggering unit configured to generate a trigger signal when detecting that a default bearer condition is met for a terminal accessing the terrestrial radio access network of the universal wireless communication system
  • a packet data protocol context activation requesting unit configured to send, by the first trigger unit, a packet data protocol context activation request to the universal wireless communication system terrestrial radio access network to initiate a packet data protocol activation procedure;
  • the default bearer establishment processing unit is configured to create a default bearer for the terminal in the packet data protocol activation process initiated by the packet data protocol context request unit.
  • a method, a network system, and a device for accessing a SAE core network by directly combining a UTRAN access network with a S AE core network, so that the SAE core can establish a default bearer for the UMTS terminal, thereby being a UMTS
  • the terminal provides an always-on function, which is convenient for the UMTS terminal to provide corresponding services on the SAE network side.
  • the UMTS terminal can access the SAE core network directly through the UTRAN, and does not need to pass the equipment of the UMTS core network such as the SGSN. It is no longer necessary to maintain the two core network devices, which reduces maintenance difficulty and reduces maintenance overhead. Moreover, no change is needed.
  • the UMTS access network and the UMTS terminal can access the SAE core network, so that the SAE core network can be easily and directly compatible with existing UMTS access networks and UMTS terminals.
  • FIG. 1 is a schematic diagram of a system architecture of a prior art UMTS network combined with a SAE/LTE network
  • FIG. 2 is a schematic structural diagram of an embodiment of a network system according to the present invention
  • FIG. 3 is a schematic structural diagram of an embodiment of an MME in FIG. 2;
  • FIG. 4 is a schematic structural diagram of an embodiment of a default bearer establishment processing unit in FIG. 3;
  • FIG. 5 is a schematic structural diagram of another embodiment of the MME in FIG. 2; FIG.
  • 6 is a schematic flowchart of an embodiment of a method for an access system architecture evolution core network according to the present invention
  • 7 is a schematic flow chart of another embodiment of a method for an access system architecture evolution core network according to the present invention.
  • the embodiment of the present invention provides a method, a system, and a device for accessing a SAE core network.
  • the SAE core network directly provides an access service for a terminal that accesses the UTRAN, and establishes a default bearer for the terminal, thereby providing the UMTS user with a default bearer.
  • Always-online feature to provide more services on the SAE network side.
  • FIG. 2 it is an architectural diagram of a network system in an embodiment of the present invention.
  • the network system includes:
  • a user terminal (MS, not shown) accesses the SAE core network through the UTRAN.
  • the S AE core network includes a mobility management entity (MME), a server SAE gateway (S-GW), and a packet data network gateway (PDN SAE Gateway, P-GW).
  • MME mobility management entity
  • S-GW server SAE gateway
  • PDN SAE Gateway P-GW
  • the MME supports the access processing of the UTRAN network by providing an Iu interface; the S-GW provides an S12 interface (ie, an Iu-U interface) to support user plane access processing of the UTRAN network.
  • the network system further includes: an LTE side device, an evolved UTRAN (Evolved UTRAN, E-UTRAN), and a user terminal (UE) accessing the E-UTRAN; and a home subscriber server/home location register (Home Subscriber Server/Home) Location Register, HSS/HLR); Policy Control and Charging Rule Function (PCRF) Entity and other network devices such as SAE/LTE architecture.
  • E-UTRAN evolved UTRAN
  • UE user terminal
  • PCRF Policy Control and Charging Rule Function
  • the MME may receive a network attach request sent by the terminal (corresponding to the UMTS access user) through the UTRAN, and attach the terminal to the SAE network. After performing the network attach operation, the MME initiates the network side. PDP context activation process. In the process of performing PDP context activation, a default bearer is created for the terminal, thereby providing the terminal with an always-on function. In addition, after the SAE network establishes a default bearer for the terminal, the dedicated bearer setup process may be initiated by the network side. At this time, when the MME receives the dedicated bearer from the S-GW in the SAE core network. When the request is made, the PDP activation process on the network side is initiated, and the terminal (MS) is notified to establish a PDP context. In the process, a dedicated bearer is established for the terminal.
  • the MME includes: a first triggering unit 10, configured to generate a trigger signal to initiate a default bearer setup process when detecting that a condition for establishing a default bearer for a terminal accessing the UTRAN is met, specifically, when the MME receives After the network attach request from the terminal and the network attach operation is performed for the terminal, the process of establishing the default bearer may be started;
  • a packet data protocol (PDP) context activation requesting unit 12 configured to send a packet data protocol (PDP) context activation request to the UTRAN under the trigger of the first triggering unit 10 to initiate a PDP activation process;
  • PDP packet data protocol
  • the default bearer establishment processing unit 14 is configured to create a default bearer for the terminal in the PDP activation process initiated by the packet data protocol (PDP) context request unit.
  • PDP packet data protocol
  • creating a default bearer for the terminal includes the following process:
  • the MME After initiating the PDP activation process and receiving the activated PDP context request from the MS, the MME sends a default bearer context request to the S-GW, and routes the P-GW to the P-GW;
  • the PCRF allocates a PCC policy for the default bearer of the request
  • the P-GW sends a response to establish a default bearer context to the S-GW, and the S-GW sends a response to establish a default 7-load context to the MME.
  • the MME negotiates with the UTRAN to request the UTRAN to perform RAB (Radio Access Bearer) assignment, and the UTRAN establishes a radio access bearer for the access terminal.
  • RAB Radio Access Bearer
  • the MME sends information such as the IP address assigned by the SAE network to the terminal in the Activate PDP Context Accept message, so that the SAE core network can establish a default bearer for the terminal.
  • the default bearer setup processing unit 14 may include:
  • the default bearer requesting unit 140 is configured to send a default bearer context request message to the S-GW in the SAE core network, and request to create a default bearer.
  • the request message may include a client identifier, such as a terminal, an MME context identifier, RAT type, default bearer quality of service, etc.
  • the default bearer receiving unit 142 is configured to: after the P-GW in the SAE core network creates a default bearer according to the request, receive a default bearer response message from the S-GW, where the response message includes the PDN address information. , S-GW user plane address, S-GW user plane TEID (Tunnel Endpoint Identifier, tunnel termination identifier, S-GW context identifier, and so on.
  • S-GW user plane address S-GW user plane TEID (Tunnel Endpoint Identifier, tunnel termination identifier, S-GW context identifier, and so on.
  • the negotiating unit 144 is configured to negotiate with the UTRAN according to the received default bearer response message, and allocate the radio access bearer corresponding to the default bearer to the terminal.
  • the MME can further include:
  • the second triggering unit 16 is configured to generate a trigger signal to initiate a process of establishing a dedicated bearer when detecting that a dedicated bearer condition is met for the terminal accessing the UTRAN; specifically, when the MME receives the creation from the P-GW After the dedicated bearer request, the process of establishing a dedicated bearer for the terminal can be started.
  • the dedicated bearer may be a bearer established for one call.
  • the terminal initiates a call, according to the default bearer established by the method of accessing the SAE core network described in the foregoing embodiment, the terminal can be quickly established.
  • a dedicated channel for communication that is, a dedicated bearer as described above.
  • the packet data protocol context activation request unit 12 sends a Packet Data Protocol (PDP) context activation request to the UTRAN under the trigger of the second trigger unit 16, and initiates a packet data protocol (PDP) activation procedure.
  • PDP Packet Data Protocol
  • the dedicated bearer establishment processing unit 18 is configured to create a dedicated bearer for the terminal in the PDP activation process initiated by the PDP context request unit.
  • creating a dedicated bearer for the terminal includes the following process:
  • the MME receives a create dedicated bearer context request from the S-GW, where the request includes information such as a PCC policy allocated by the PCRF for the dedicated bearer;
  • the MME initiates a request PDP context activation procedure, and after receiving the Activate PDP Context Request message from the terminal accessing the UTRAN, sends an RAB Arrangement Request message to the UTRAN requesting the UTRAN to establish a radio bearer.
  • the MME After receiving the RAB scheduling response message from the UTRAN, the MME sends a Create Dedicated Bearer Response message to the S-GW. Thereafter, the MME may send an Activate PDP Context Accept message to the terminal, including the IP address allocated for the dedicated bearer. And other information.
  • the MME can include the first trigger unit 10, the PDP context activation request unit 12, the default bearer setup processing unit 14, the second trigger unit 16, and the dedicated bearer setup processing unit 18.
  • processing unit with other functions can also be included in the MME, for example, The unit for network attachment operation and other functional units responsible for mobility management of the control plane are not described here.
  • Steps S61-64 when the terminal (MS) discovers the UTRAN access network, for example, when the device is powered on, it needs to perform an attach request of the network, and sends an attach request (Attach Request) message to the MME in the SAE core network through the UTRAN, and the MME pairs
  • the attach request is processed, where the attach request may include previously registered information (such as a temporary identifier) or its permanent identifier; the process of processing the attach request may include a terminal identity acquisition process, an authentication process, and a security negotiation process. And the processing of the location update process.
  • the MME sends an Attach Accept message to the terminal.
  • Steps S65-66 After completing the network attach operation of the terminal, the MME initiates a network-side PDP context activation process, and sends a Request PDP CONTEXT Activate message to the terminal, requesting the terminal (MS) to establish a PDP context.
  • Steps S67-68 The terminal (MS) sends an Activate PDP CONTEXT Request message to the MME, and the MME performs a PDP context creation process, according to the local configuration or the default bearer information obtained from the HSS/HLR (such as the default The subscription information of the IP access bearer, etc., initiates a default bearer creation process.
  • Step S69 The MME selects an S-GW according to the principles of network topology, load balancing, etc., and sends a Create Default Bearer Context Request message to the selected S-GW, where the message may include Customer identification number (IMSI) such as terminal, MME Context ID, RAT type, Default Bearer QoS, PDN Address Allocation, upper limit of data rate (AMBR) and other information, request to create a default bearer.
  • IMSI Customer identification number
  • MME Context ID such as terminal
  • RAT type such as terminal
  • Default Bearer QoS such as PDN Address Allocation
  • AMBR upper limit of data rate
  • Step S610 The S-GW sends a Create Default Bearer Context Request message to the P-GW in the SAE core network.
  • the message may include, for example, a Serving GW Address for the user plane, an S-GW user plane TEID (Serving GW TEID of the user plane), and an S-GW control plane tunnel end identifier (Serving GW).
  • TEID of the control plane TEID of the control plane
  • RAT type RAT type
  • Default Bearer QoS default bearer quality of service
  • AMBR upper limit of data rate
  • Steps S611-612 the P-GW interacts with the policy control and charging rule function (PCRF), and requests the policy control and charging (PCC) rules of the default bearer.
  • PCRF policy control and charging rule function
  • PCC policy control and charging
  • Step S613 The P-GW creates a default bearer according to the PCC rule delivered by the PCRF, and sends a Create Default Bearer Response message to the S-GW.
  • the message may include, for example, a PDN GW Address for the user plane, a P-GW user plane TEID (PDN GW TEID of the user plane), and a P-GW control plane TEID (PDN GW TEID of Information such as the control plane and PDN Address Information.
  • Step S614 The S-GW updates the information of the P-GW in the default bearer response message received from the P-GW to the forwarding table of the default bearer, and sends a default bearer response (Create Default). Bearer Response ) Message to the MME.
  • the message may include, for example, PDN Address Information, S-GW user plane address (Serving GW address for User Plane0, S-GW user plane TEID (Serving GW TEID for User Plane), S-GW context identifier) (Serving GW Context ID) and other information.
  • Steps S615 ⁇ 616 The MME sends a Radio Access Bearer Arrangement Request (RAB Assignment Request) message to the UTRAN, requesting the UTRAN to arrange the radio bearer.
  • the message may carry information such as the quality of service (QOS) parameter, the user plane address of the S-GW, and the user plane TEID.
  • QOS quality of service
  • Steps S617 ⁇ 618 After establishing the radio bearer, the UTRAN sends a radio access bearer scheduling response (RAB Assignment Response) message to the MME, where the UTRAN user plane address and TEID information are carried.
  • RAB Assignment Response radio access bearer scheduling response
  • Steps S619 ⁇ 620 The MME sends an Update Bearer Context Request message to the S-GW, and carries information such as the user plane address and the TEID of the UTRAN. After updating the information, the S-GW returns an Update 7 Bearer Context Response message to the MME.
  • Steps S621 ⁇ 622 The MME sends an Activate PDP CONTEXT Accept message to the terminal (MS), which carries information such as the QOS parameter and the IP address assigned by the P-GW.
  • Steps S623-624 The MME sends an Update Location Request (Update Location Request) message to the HSS/HLR for updating the address information of the P-GW to the HLR/HSS. After completing the update of the address information, the HSS/HLR returns an Update Location Response (Update Location Response) message to the MME.
  • the terminal MS obtains an IP address and establishes a bearer connection, and can perform service communication.
  • FIG. 7 is a schematic flow chart of another embodiment of a method for accessing an S AE core network through UMTS according to the present invention.
  • Step S71 The Policy Control and Charging Rules Function Entity (PCRF) performs a PCC policy delivery process on the P-GW, and transmits the bearer related policy and charging control information to the P-GW.
  • PCRF Policy Control and Charging Rules Function Entity
  • Step S72 The P-GW obtains the QOS parameter of the corresponding bearer according to the PCC policy, and sends a Create Dedicated Bearer Context Request message to the S-GW, where the message may carry the quality of service of the dedicated bearer (Bearer QoS) ) Parameters, UL TFT (Uplink Traffic Flow Template) and S5/S8 TEID.
  • Bearer QoS Quality of Service
  • UL TFT Uplink Traffic Flow Template
  • Step S73 The S-GW creates a local bearer, and sends a Create Dedicated Bearer Context Request message to the MME, where the Bearer QOS parameter of the bearer, the ULTFT, and the TEID allocated by the S-GW are carried.
  • Step S74 The MME initiates a request PDP context activation process, and sends a Request PDP CONTEXT Activate message to the terminal (MS), which carries information such as TI, UL TFT, and IP address of the terminal (MS IP Address).
  • Step S75 The terminal (MS) initiates a PDP context activation process, that is, sends an Activate PDP Context Request message to the MME through the UTRAN.
  • Steps S76-S79 After receiving the Activate PDP Context Request message of the MS, the MME initiates a Radio Access Bearer Arrangement Request (RAB Assignment Request) message to the UTRAN, where the message carries the Bearer QOS parameter and the S-GW. Information such as the assigned TEID. After the UTRAN is established, the UTRAN returns a Radio Access Bearer Arrangement Response (RAB Assignment Response) message carrying the TEID and other information assigned by the UTRAN.
  • RAB Assignment Request Radio Access Bearer Arrangement Request
  • RAB Assignment Response Radio Access Bearer Arrangement Response
  • Step S710 The MME sends a Create Dedicated Bearer Response message to the S-GW, where the message carries information such as the TEID allocated by the UTRAN.
  • Step S711 and step S713 the MME simultaneously sends an Activate PDP Context Accept message to the terminal (MS), which includes information such as the assigned IP address.
  • Step S712 The S-GW updates the local bearer context according to the TEID information in the Create Dedicated Bearer Response message sent by the MME, and sends a Create Dedicated Bearer Response message to the P-GW.
  • Step S714 The P-GW sends a PCC Decision Provision Ack message to the PCRF, thereby completing the dedicated bearer setup process.
  • the terminal obtains an IP address and establishes a dedicated bearer connection for service communication.
  • the terminal accessing the SAE core network through the UTRAN.
  • the terminal can also access the SAE core network through an LTE access network (such as E-UTRAN), that is, the MME in the SAE core network has the functions of handling LTE access and UMTS access.
  • LTE access network such as E-UTRAN
  • the method, the system and the device provided by the embodiments of the present invention enable the S AE core network to establish a default bearer for the UMTS terminal by combining the UTRAN access network and the SAE core network, and can provide an always-on function for the UMTS terminal. It is convenient for the UMTS terminal to provide corresponding services on the SAE network side.
  • the UMTS terminal can directly access the SAE core network through the UTRAN without having to pass the UMTS core network device such as the SGSN, and no need to maintain the two core network devices, thereby reducing maintenance difficulty and reducing maintenance overhead;
  • the SAE core network can be accessed, so that the SAE core network can be easily and directly compatible with the existing UMTS access network and the UMTS terminal.
  • the present invention can be implemented by hardware, or by software plus necessary general hardware platform.
  • the technical solution of the present invention may be embodied in the form of a software product, which may be stored in a non-volatile storage medium (which may be a CD-ROM, a USB flash drive, a mobile hard disk, etc.), including several The instructions are for causing a computer device (which may be a personal computer, server, or network device, etc.) to perform the methods described in various embodiments of the present invention.

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

Abstract

L'invention concerne un procédé d'accès au réseau fédérateur SAE (system architecture evolution) comprenant les étapes suivantes : une fois que l'entité de gestion de mobilité dans le réseau fédérateur SAE a terminé l'opération d'attachement au réseau pour un terminal accédant au réseau d'accès radio terrestre du système de télécommunication mobile universel, elle envoie une demande d'activation de contexte de protocole de données de paquets au réseau d'accès radio terrestre du système de télécommunication mobile universel et elle lance une procédure d'activation de protocole de données de paquets ; dans la procédure d'activation de protocole de données de paquets, le réseau fédérateur SAE crée un support par défaut pour le terminal accédant au réseau d'accès radio terrestre du système de télécommunication mobile universel. Un système de réseau et une entité de gestion de mobilité sont fournis de manière correspondante. La création du support par défaut pour le terminal accédant au réseau d'accès radio terrestre du système de télécommunication mobile universel est activée, et la fonction toujours en ligne est fournie.
PCT/CN2009/070186 2008-02-01 2009-01-16 Procédé, système et appareil d'accès au réseau fédérateur sae WO2009097779A1 (fr)

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CN102752722B (zh) * 2011-04-19 2016-10-12 中国移动通信集团公司 一种永远在线能力的提供方法、系统和设备
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