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WO2008025206A1 - Procédé et réseau pour créer le tunnel de plan de contrôle dans le service de multidiffusion du système de communication mobile - Google Patents

Procédé et réseau pour créer le tunnel de plan de contrôle dans le service de multidiffusion du système de communication mobile Download PDF

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Publication number
WO2008025206A1
WO2008025206A1 PCT/CN2007/001616 CN2007001616W WO2008025206A1 WO 2008025206 A1 WO2008025206 A1 WO 2008025206A1 CN 2007001616 W CN2007001616 W CN 2007001616W WO 2008025206 A1 WO2008025206 A1 WO 2008025206A1
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WO
WIPO (PCT)
Prior art keywords
mbms
sgsn
ggsn
bearer context
tunnel
Prior art date
Application number
PCT/CN2007/001616
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English (en)
Chinese (zh)
Inventor
Xiaoyong Tu
Jiannan Cai
Zhihai Wang
Original Assignee
Zte Corporation
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Zte Corporation filed Critical Zte Corporation
Publication of WO2008025206A1 publication Critical patent/WO2008025206A1/fr

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Classifications

    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04WWIRELESS COMMUNICATION NETWORKS
    • H04W76/00Connection management
    • H04W76/40Connection management for selective distribution or broadcast
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04WWIRELESS COMMUNICATION NETWORKS
    • H04W8/00Network data management
    • H04W8/26Network addressing or numbering for mobility support
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04WWIRELESS COMMUNICATION NETWORKS
    • H04W92/00Interfaces specially adapted for wireless communication networks
    • H04W92/16Interfaces between hierarchically similar devices
    • H04W92/24Interfaces between hierarchically similar devices between backbone network devices

Definitions

  • the present invention relates to a mobile communication system broadcast multicast service (MBMS), and more particularly to a method and network for establishing a GPRS tunnel protocol control plane tunnel in a mobile communication system multicast service.
  • MBMS mobile communication system broadcast multicast service
  • MBMS Multimedia Broadcast/Multicast Service
  • GTP GPRS Tunneling Protocol
  • GPRS General Packet Radio Service
  • GTP-C GPRS Tunneling Protocol for Control Plane
  • GPRS tunneling protocol control plane GPRS tunneling protocol control plane
  • GSN GPRS Supporting Node
  • GPRS support node GPRS support node
  • SGSN Service GSN
  • GPRS support node is a network element responsible for mobility management at the core network side
  • GGSN Gateway GSN
  • the gateway GPRS support node is the network element that the core network side is responsible for accessing and sending out of the core network
  • the TEID identifies a tunnel in a network element, and the GTP tunnel between the SGSN and the GGSN is identified by the TEID.
  • TEID-C used to control the tunnel identifier of the surface.
  • MBMS broadcast multicast transmission services
  • MBMS provides a point-to-multipoint service in which data sources send data to multiple users in a mobile network, realizes network resource sharing, and improves utilization of network resources, especially air interface resources.
  • MBMS provides two methods: broadcast mode and multicast mode.
  • MBMS can not only realize plain text low-rate message class multicast and broadcast, but also realize high-speed multimedia service multicast and broadcast.
  • Multicast and broadcast services MBMS is based on WCDMA/GSM packet network.
  • Add some new functional entities such as the broadcast multicast service center BM-SC, to existing packet domain functional entities such as SGSN (Packet Service Node), GGSN (Packet Gateway Node), RAN (Radio Access Network) and UE (Set-up terminal) Increases the MBMS function and defines a new logical shared channel to implement air interface resource sharing.
  • the network architecture using MBMS under the mobile communication system is shown in Figure 1.
  • the rest are the bearer network elements of the mobile communication system, which are used to complete the data transmission function.
  • the signaling exchange between the GGS and the BM-SC is performed at the Gmb reference point to implement the control plane of the MBMS, including the following signaling:
  • the GGSN establishes the bearer context of the MBMS and registers with the BM-SC;
  • the GGSN or BM-SC releases the MBMS bearer context, the GGSN registers with the BM-SC; - The BM-SC informs the GGSN of the start and end of the session.
  • a series of steps and signaling interactions are required, including at least service notification, access procedures for users joining broadcast or multicast groups (including activation, registration, etc.), and leaving (including deactivation, logout, etc.) A step of.
  • the existing MBMS mechanism adds an MBMS Bearer Context (MBMS Bearer Context) to the existing packet domain core network function entities SGSN and GGSN to record information about a certain service.
  • MBMS Bearer Context MBMS Bearer Context
  • the IP multicast address the APN (Access Point Name), the TMGI (Temporary Mobile Group Identities), and the downlink node list (list of Downstream nodes ) and other information.
  • the downlink node list lists the address information of the next network node to which the downlink data is to be reached.
  • the downlink node list of the BM-SC is to receive the address information of all GGSNs of the service.
  • the address information here may be a network node identifier or an IP address or the like that enables the downlink data to arrive, but the specific content and format of the ID in the downlink node list have not yet been defined.
  • the establishment of the MBMS bearer context in the multicast service is completed by using the registration message.
  • the network element that can send the MBMS registration request message includes the RC (Radio Network Controller), the SGSN, and the GGSN.
  • the registration process is shown in Figure 2.
  • the registration message is encapsulated by the GTP protocol.
  • the registration request and response message there is no parameter that can identify the GSN (this is the collective name of the SGSN and the GGSN), so that the network element receiving the registration request may obtain the response message from the source address in the header of the IP packet. Destination address. Processing logic from the protocol layer Unreasonable.
  • the GTP-C tunnel is established between the two network elements in the GTP-C.
  • the specific implementation is to bring the GTP-C in the signaling message between the two NEs.
  • Information including network element address and TEID.
  • the prior art defines the establishment of the tunnel in the Session Start process, that is, the GSN address and the TEID parameter are included in the process message.
  • the GSN address information is not saved, and it is unreasonable. If there is multiple Session Start processes in the middle of an MBMS service, the network load is increased.
  • the multicast service is defined to obtain the node identifier in the registration process, there is no parameter information indicating the identifier in the parameters of the registration related message;
  • GSN address or the GSN address and the TEID are used as the format of the node identifier, such information has been defined by the Session Start after registration, rather than being acquired in the registration process;
  • the existing Session Start message has parameters such as GSN address and TEID, but there is no parameter information such as GSN address in the MBMS bearer context.
  • the technical problem to be solved by the present invention is to provide a method and a network for establishing a control plane tunnel in a broadcast multicast service of a mobile communication system, to overcome the problems existing in the prior art, and to make the registration and session process of the MBMS service more reasonable, and at the same time Reduce network load.
  • the technical solution adopted by the invention is:
  • the present invention provides a method for establishing a control plane tunnel in a multicast service of a mobile communication system.
  • the establishment of the control plane tunnel is performed in a registration process, and includes the following steps:
  • step (b) After receiving the MBMS registration request message, the GGSN saves the tunnel identification information of the SGS, and determines whether there is an MBMS bearer context. If yes, perform step (c); if not, create an MBMS bearer context, and send the MBMS bearer context to the broadcast group.
  • the broadcast service center BM-SC sends an MBMS registration request message, and after the BM-SC returns an MBMS registration response message, step (c) is performed;
  • the GGSN stores the tunnel identification information of the SGSN in the MBMS bearer context, and returns an MBMS registration response message to the SGSN, where the message carries the tunnel identification information of the GGSN;
  • the SGSN After receiving the MBMS registration response message, the SGSN saves the tunnel identification information of the GGSN. Further, the tunnel identifier information of the SGSN includes the tunnel identifier TEID-C of the SGSN and the control plane IP address of the SGSN, and the tunnel identifier information of the GGSN includes the TEID-C of the GGSN and the IP address of the GGSN control plane.
  • the GGSN saves the tunnel identity information of the SGSN in the MBMS bearer context by storing the control plane IP address of the SGSN or the control plane IP address and TEID-C of the SGSN in the MBMS bearer context.
  • tunnel identity information is stored in a downlink node list parameter in the MBMS bearer context.
  • step (a) after the SGSN creates the MBMS bearer context, the SGSN adds an IP multicast address and an access point name APN, and the MBMS registration request message sent by the SGSN to the GGSN further carries an IP multicast address and APN.
  • step (b) after receiving the MBMS registration request message, the BM-SC adds the tunnel identification information of the GGSN to the MBMS bearer context, and returns an MBMS registration response message to the GGSN, where the message carries the temporary mobility group. Identification and required MBMS capacity.
  • the method further includes: the wireless mesh controller RNC sending an MBMS registration request to the SGSN to which it belongs; after the step (d), further comprising the step (e): the SGSN adds the identifier of the RC to The MBMS bears the context and returns an MBMS registration response message to the RC.
  • step (e) if the SGSN receives the MBMS registration request of the RNC and When there is an MBMS bearer context on the SGSN, step (e) is directly executed.
  • steps (b), (c), and (d) after the network element returns the MBMS registration response message, if the MBMS bearer context is active at this time, the network element initiates a session start procedure.
  • the invention also provides a network for establishing a control plane tunnel in a multicast service of a mobile communication system, comprising a service GPRS support node SGSN, a gateway GPRS support node GGSN, and a broadcast multicast service center BM-SC, wherein:
  • the SGSN is configured to: when there is no MBMS bearer context, create an MBMS bearer context and send an MBMS registration request message with SGSN tunnel identity information to the GGSN, and receive the MBMS registration with the GGSN tunnel identity information sent by the GGSN to the GGSN.
  • Response message when there is no MBMS bearer context, create an MBMS bearer context and send an MBMS registration request message with SGSN tunnel identity information to the GGSN, and receive the MBMS registration with the GGSN tunnel identity information sent by the GGSN to the GGSN.
  • the GGSN is configured to receive an MBMS registration request message with the SGSN tunnel identification information sent by the SGSN; when there is no MBMS bearer context on the GGSN, the GGSN is configured to send the MBMS registration request message to the BM-SC, and is used for receiving The MBMS registration response message returned by the BM-SC to the SGSN is also used to send the MBMS registration response message to the SGSN when receiving the MBMS registration response message sent by the BM-SC or the MBMS bearer context on the GGSN;
  • the BM-SC is configured to receive an MBMS registration request message sent by the GGSN, and send the MBMS registration response message to the GGSN.
  • a radio network controller RNC is further included.
  • the RNC detects that the UE it controls is to use the MBMS service
  • the RC is used to send an MBMS registration request message to the SGSN, and is used to receive an MBMS registration response message sent by the SGSN to the SGSN.
  • the SGSN is further configured to receive an MBMS registration request message sent by the RNC, and send an MBMS registration response message to the RC.
  • the SGSN tunnel identification information includes the tunnel identifier TEID-C of the SGSN and the control plane IP address of the SGSN
  • the tunnel identifier information of the GGSN includes the TEID-C of the GGSN and the IP address of the GGSN control plane.
  • 1 is a network architecture diagram of using MBMS in a mobile communication system in the prior art
  • 2 is a flow chart of MBMS registration in the prior art
  • FIG. 3 is a flow chart of MBMS registration in an embodiment of the present invention. Preferred embodiment of the invention
  • a network for establishing a control plane tunnel in a mobile communication system multicast service including an SGSN, a GGSN, and a BM-SC and an RNC.
  • the SGSN is configured to send, to the GGSN, an MBMS registration request message with SGSN tunnel identification information (including the tunnel identifier TEID-C of the control plane and the control plane IP address of the SGSN of the SGSN) when there is no MBMS bearer context thereon, and For receiving an MBMS registration response message sent by the GGSN with GGSN tunnel identification information (including the TEID-C and GGSN control plane IP address of the GGSN); the SGSN is further configured to receive an MBMS registration request message sent by the RC to the MSCSN. And send an MBMS registration response message to the RC.
  • SGSN tunnel identification information including the tunnel identifier TEID-C of the control plane and the control plane IP address of the SGSN
  • the GGSN is configured to receive an MBMS registration request message with the SGSN tunnel identification information sent by the SGSN.
  • the GGSN is configured to send an MBMS registration request message to the BM-SC, and is used to receive the BM-SC direction.
  • the MBMS registration response message sent by the MME is sent to the SGSN when receiving the MBMS registration response message sent by the BM-SC or the MBMS bearer context on the GGSN;
  • the BM-SC is configured to receive an MBMS registration request message sent by the GGSN, and send an MBMS registration response message to the GGSN.
  • the RNC is configured to send an MBMS registration request message to the SGSN when it detects that the UE whose control is to use the MBMS service, and to receive the MBMS registration response message sent to the SGSN.
  • the present invention is directed to a multicast service, and adds tunnel identification information such as a GSN address and a TEID to a registration message to complete establishment of a GTP-C tunnel between two GSNs.
  • the MBMS registration process in this embodiment is that when a user needs to access a certain MBMS session-based service, but the network side has not established the session-related information, the network element on the network side completes the establishment of the session-related information through the registration process.
  • the registration process is shown in Figure 3 and includes the following steps: Step 301: When the RNC detects that the UE to be controlled uses the MBMS service, the RNC sends an MBMS Registration Request message to the SGSN to which the RNC belongs. Step 302: The SGS receives the registration about the MBMS bearer service from the RNC. After requesting the message, it is determined whether there is an MBMS bearer context for the MBMS bearer service, and if yes, step 306 (b) is performed.
  • the SGSN creates an MBMS bearer context (set in the "Standby" state.
  • the MBMS registration request message is sent to the GGSN, where the message carries the IP multicast address, the APN, and the tunnel identifier information of the SGSN.
  • the tunnel identifier information of the SGSN includes the TEID-C of the SGSN. IP address of the control plane of the SGSN;
  • the MBMS bearer service If there is no MBMS bearer context for the MBMS bearer service on the SGSN, it is possible that for the MBMS bearer service, the first MBMS UE context has been created on the SGSN, or the MBMS registration request message sent by the RC to the RCSN is received. After that, there is no corresponding MBMS 7 context on the SGSN.
  • the MBMS bearer context is required for one MBMS service.
  • One MBMS UE context is necessary for one user to join an MBMS service.
  • SGSN In addition to the RNC can send MBMS registration request messages, other network elements, such as SGSN and GGSN, are also available. If the SGSN detects that the UE it controls is to use the MBMS service, when it prepares to issue the MBMS registration request, if there is no MBMS bearer context for the MBMS bearer service, it sends an MBMS registration request message to the GGSN to which it belongs.
  • Step 303 After receiving the registration request message about the MBMS bearer service from the SGSN, the GGSN saves the tunnel identifier information of the SGSN, and determines whether there is an MBMS bearer context for the MBMS bearer service on the GGSN. If yes, step 305 is performed. If not, the GGSN creates an MBMS bearer context (in the "Standby" state) and sends an MBMS registration request message (carrying the IP multicast address, APN) to the BM-SC;
  • APN IP multicast address
  • the MBMS bearer context is created on the GGSN, or the MBMS registration request message sent by the SGSN is received, Not yet on the GGSN There is a corresponding MBMS bearer context.
  • Step 304 After receiving the MBMS registration request message from the GGSN, the BM-SC returns an MBMS registration response message to the GGSN, where the message carries the TMGI and the required MBMS bearer capability; if the MBMS bearer context is "Active" at this time. Status, the BM-SC initiates a session start process to the GGSN.
  • the GGSN After receiving the MBMS registration response message returned by the BM-SC, the GGSN performs the next step; Step 305, the GGSN saves the control plane IP address or the control plane IP address of the SGSN in the "list of downstream nodes" parameter in the MBMS bearer context.
  • the TEID-C returns an MBMS registration response message to the SGSN, where the message carries the TMGI, the required MBMS bearer capability, and the tunnel identification information of the GGSN.
  • the control plane IP address of the SGSN and the control plane IP address of the TEID-C or SGSN can be saved in the "list of downstream nodes" parameter in the MBMS bearer context, or it can be saved as a new information item. If stored as a new information item, the information item will exist as a list (list) to correspond to multiple SGSNs (each GGSN may correspond to TEID-C and control plane IP addresses of one or more SGSNs).
  • the GGSN initiates a session start procedure to the SGSN.
  • Step 306 (a) after receiving the MBMS registration response message returned by the GGSN, the SGSN saves the tunnel identification information of the GGSN;
  • the SGSN adds the identity of the RNC to the "list of downstream nodes" parameter in the MBMS bearer context of the SGSN.
  • the SGSN returns an MBMS Registration Response message (with TMGI, required MBMS bearer capability) to the RNC.
  • the SGSN initiates a session start process to the RNC.
  • the present invention is directed to a multicast service, and adds a GSN address and a TEID to the registration message.
  • the track identification information completes the establishment of the GTP-C tunnel between the two GSNs.
  • the information may be used as the content of the node identifier in the downlink node list, and such parameter information may be additionally added in the existing MBMS bearer context.
  • this tunnel can be used for all subsequent Session Start processes for this MBMS service. Make the MBMS service registration and session process more reasonable, and reduce the load on the network.

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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 le réseau pour créer le tunnel de plan de contrôle dans le service de multidiffusion du système de communication mobile, comprenant SGSN, GGSN et BM-SC. Le procédé pour créer le tunnel de plan de contrôle comprend : a) lorsque le SGSN reçoit ou est prêt à envoyer la demande de référencement MBMS, et s'il n'existe pas de contexte porteur de MBMS dans celle-ci, il le crée et envoie la demande au GGSN, en transportant les informations d'identifiant de tunnelisation de SGSN; b) après réception de ladite demande, le GGSN sauvegarde les informations d'identifiant de tunnelisation de SGSN, et détermine s'il existe un contexte porteur de MBMS dans celles-ci, si c'est le cas, il exécute c, ou sinon il le crée et envoie la demande de référencement MBMS au BM-SC, en attendant que le BM-SC renvoie la réponse de référencement, puis exécute c; c) le GGSN sauvegarde les informations d'identifiant de tunnelisation de SGSN dans le contexte porteur de MBMS, et renvoie la réponse de référencement MBMS au SGSN, en transportant les informations d'identifiant de tunnelisation de GGSN; et d) après réception de ladite réponse, le SGSN sauvegarde les informations d'identifiant de tunnelisation de GGSN.
PCT/CN2007/001616 2006-08-25 2007-05-17 Procédé et réseau pour créer le tunnel de plan de contrôle dans le service de multidiffusion du système de communication mobile WO2008025206A1 (fr)

Applications Claiming Priority (2)

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CNB2006101151451A CN100531137C (zh) 2006-08-25 2006-08-25 移动通信系统组播业务中建立控制面隧道的方法
CN200610115145.1 2006-08-25

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