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WO2011060673A1 - Procédé d'établissement de support public, procédé de transmission de données et appareil du côté du cœur de réseau - Google Patents

Procédé d'établissement de support public, procédé de transmission de données et appareil du côté du cœur de réseau Download PDF

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Publication number
WO2011060673A1
WO2011060673A1 PCT/CN2010/077744 CN2010077744W WO2011060673A1 WO 2011060673 A1 WO2011060673 A1 WO 2011060673A1 CN 2010077744 W CN2010077744 W CN 2010077744W WO 2011060673 A1 WO2011060673 A1 WO 2011060673A1
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WIPO (PCT)
Prior art keywords
group
terminal
mtc
bearer
mtc group
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PCT/CN2010/077744
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English (en)
Chinese (zh)
Inventor
谢宝国
朱春晖
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中兴通讯股份有限公司
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Publication of WO2011060673A1 publication Critical patent/WO2011060673A1/fr

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Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W28/00—Network traffic management; Network resource management
    • H04W28/16—Central resource management; Negotiation of resources or communication parameters, e.g. negotiating bandwidth or QoS [Quality of Service]
    • H04W28/26—Resource reservation

Definitions

  • Public bearer establishment method for Public bearer establishment method, data transmission method and core network side device
  • the present invention relates to a bearer establishment technology in mobile communication, and in particular, to a public bearer establishment method, a data transmission method, and a core network side device. Background technique
  • M2M Machine to Machine
  • M2M service providers use existing wireless networks, such as General Packet Radio Service (GPRS) networks and Evolved Packet System (EPS) networks, to implement M2M services.
  • GPRS General Packet Radio Service
  • EPS Evolved Packet System
  • the 3rd Generation Partnership Project mainly uses GPRS network to realize data packet transmission.
  • 3GPP 3rd Generation Partnership Project
  • the performance requirements of the service layer for the bandwidth and delay of the transport layer are coming. The higher.
  • Evolved Radio Access Network Evolved Radio Access Network
  • E-RAN Evolved Radio Access Network
  • PDN Packet Data Network
  • EPC provides lower latency and allows more wireless access systems to access, including the following network elements:
  • the MME Mobility Management Entity
  • UE User Equipment
  • the security parameter, etc. allocates a temporary identifier to the user, and when the UE is camped on the tracking area or the network, is responsible for authenticating the user of the UE.
  • the Serving Gateway is a user plane entity that is responsible for user plane data routing processing and terminates downlink data of UEs in idle (ECM_IDLE) state. Manage and store the SAE bearer context of the UE, for example: IP bearer service parameters and network internal routing information.
  • the S-GW is the anchor point of the internal user plane of the 3GPP system. A user can only have one S-GW at a time.
  • the packet data network gateway (P-GW, PDN Gateway) is the gateway responsible for the UE accessing the PDN, assigns the user IP address, and is also the mobility anchor of the 3GPP and non-3GPP access systems.
  • the function of the P-GW also includes the policy implementation. , billing support. Users can access multiple P-GWs at the same time.
  • the Policy and Charging Enforcement Function (PCEF) is also located in the P-GW.
  • the Policy and Charging Rules Function (PCRF) is responsible for providing policy control and charging rules to the PCEF.
  • the home subscriber server (HSS) is responsible for permanently storing the subscriber data.
  • the content stored in the HSS includes the UE's International Mobile Subscriber Identification (IMSI) and the IP address of the P-GW.
  • MTC Server (Machine Type Communication Server) is a newly added network element for M2M applications. It is mainly responsible for information collection and data storage of machine type communication devices (MTC UE, Machine Type Communication Device). / Processing and other work, and the necessary management of the MTC UE.
  • the MTC UE is a terminal used by the M2M service. Similar to the UE, it also includes a Universal Integrated Circuit Card (UICC) and a Mobile Equipment (ME, Mobile Equipment). It is usually responsible for collecting information of several collectors and passing through the RAN node. Access the core network and interact with the MTC Server.
  • UICC Universal Integrated Circuit Card
  • ME Mobile Equipment
  • the MTC UE needs to transmit data information to the MTC Server or other MTC UEs through the SAE network.
  • the SAE network establishes a GPRS Tunneling Protocol (GTP) tunnel between the S-GW and the P-GW for this transmission, and the data information is reliably transmitted through the GTP tunnel.
  • GTP GPRS Tunneling Protocol
  • Step 201 The MTC UE initiates a network attach request to the eNodeB to access the SAE network, and carries information such as an IMSI, an MTC UE network access capability, and an instruction to allocate an IP.
  • Step 202 The eNodeB selects an MME for the MTC UE to serve, and forwards the attach request to the MME, and also carries important information such as the identifier of the MTC UE to the MME.
  • Step 203 The MME sends an authentication data request message (including an IMSI) to the HSS.
  • the HSS first determines the subscriber data corresponding to the IMSI. If no subscription is found or the IMSI is blacklisted, the HSS returns the authentication data to the MME. Responding to and carrying the appropriate error cause; if the subscriber data corresponding to the IMSI is found, the HSS returns an authentication data response message (including an authentication vector) to the MME.
  • the MME performs an authentication process to verify the legitimacy of the terminal IMSI and implements a security mode process. To enable a secure connection.
  • Step 204 The MME sends a location update request to the HSS of the home network, where the identifier of the MME and the identifier of the MTC UE are used to notify the HSS of the area currently accessed by the MTC UE.
  • Step 205 The HSS searches for the subscription user data of the MTC UE according to the identifier of the MTC UE, and sends the subscription user data to the MME.
  • the subscriber data mainly includes information such as the default access point name (APN, Access Point Name) and bandwidth.
  • the MME receives the subscriber data, checks whether the MTC UE is allowed to access the network, and returns a receiving user response to the HSS. If the MME finds that the MTC UE has roaming restrictions or access restrictions, the MME will prohibit the MTC UE from attaching and notify the HSS. .
  • Step 206 The HSS sends a confirmation location update response to the MME.
  • Step 207 The MME selects an S-GW for the MTC UE, and sends a request for establishing a default bearer.
  • the MME informs the S-GW of the necessary information: an identifier of the MTC UE, an identifier of the MME, an indication for assigning an IP address to the MTC UE, default bandwidth information, a P-GW address, and the like.
  • Step 208 The S-GW sends a request for establishing a default bearer to the P-GW.
  • the S-GW informs the P-GW of the necessary information, such as: an address of the S-GW, default bandwidth information, an indication for assigning an IP address to the MTC UE, and the like.
  • Step 209 If necessary, the P-GW requests the PCRF for the policy and charging rules and decision information configured for the MTC UE.
  • Step 210 The P-GW establishes a default bearer according to the policy and charging decision information returned by the PCRF, and returns a 7-load setup response to the S-GW.
  • Step 211 The S-GW sends a response to the default bearer establishment to the MME.
  • Step 212 The MME sends an attach accept response to the eNodeB, indicating that the request of the MTC UE to attach to the network has been accepted, and the response carries the address of the S-GW and the Tunnel Endpoint Identifier.
  • the radio bearer setup request carries the bearer network ID, the address of the P-GW, the IP address assigned to the MTC UE, the bandwidth information, and the like.
  • Step 214 The MTC UE sends a radio bearer setup response to the eNodeB, indicating that the radio bearer setup is complete.
  • Step 215 The eNodeB notifies the MME that the attach process is complete, and the TEID of the eNodeB and the address of the eNodeB are carried in the notification message.
  • Step 216 The MME sends an update bearer request to the S-GW, and notifies the TEID and address of the eNodeB served by the MTC UE, and establishes a GTP-based S1 access bearer between the eNodeB and the S-GW.
  • Step 217 The S-GW sends an update bearer response to the MME.
  • Step 218 If the P-GW is not specified by the HSS, the MME sends a location update request to the HSS, and notifies the HSS of the address information of the P-GW served by the MTC UE, and the HSS updates the information.
  • the M2M service is a networked application and service centered on intelligent interaction of machine terminals. It uses intelligent machine terminals to transmit information over the wireless network, providing customers with information solutions to meet customer information needs for monitoring, command and dispatch, data collection and measurement.
  • the communication object of M2M is machine-to-machine, which can be communication between people and machines, communication between machines and servers, and communication between different intelligent terminals.
  • Different application MTC UEs have different characteristics, such as elevators and other elevator devices have low mobility, only PS switched (Packet Switched only) attributes, while monitoring and alarm devices have low mobility, PS only, and Has attributes such as low data transfer and high availability. Therefore, different system optimizations are required for different application MTC UEs, which can effectively manage, monitor, and pay for the MTC UE. Fees, etc.
  • M2M terminals For M2M terminals, the service type is completely different from that of H2H terminals. According to statistics, more than 90% of M2M terminals are mainly low-mobility and low-data services, and their occupied bandwidth is negligible compared with H2H terminals. Since more than 90% of the M2M terminals are low-input attributes, the amount of data per day may not exceed several hundred bits.
  • the main purpose of the present invention is to provide a method for establishing a public bearer, a data transmission method, and a core network side device, so as to solve the problem that a large-scale M2M terminal consumes a large amount of network resources when accessing the network.
  • a method for establishing a public bearer provided by the present invention, the method comprising:
  • the core network side device establishes a group common bearer resource for a machine-to-machine communication (M2M) terminal in a machine type communication group (MTC Group);
  • M2M machine-to-machine communication
  • MTC Group machine type communication group
  • the core network side device allocates the group common bearer resource to the M2M terminal requesting access.
  • EPC evolved packet network
  • the group establishes a group public bearer resource for the M2M terminal in the MTC Group, which is specifically:
  • the core network side device reserves the group common bearer resource of the MTC group, and when the M2M terminal in the MTC group accesses the first time, the core network side device activates the reserved group public bearer resource;
  • the M2M terminal in the MTC Group accesses the EPC
  • the M2M terminal that requests the access is allocated a group common bearer resource, which is specifically:
  • the core network side device assigns the activated group of common bearer resources to the M2M terminal requesting access in the MTC Group.
  • the group is configured to establish a group public bearer resource for the M2M terminal in the MTC group, where: the core network side device does not reserve the group common bearer resource of the MTC group, and when the M2M terminal in the MTC Group accesses for the first time, The core network side device creates a group public bearer resource of the MTC Group;
  • the M2M terminal in the MTC Group accesses the EPC
  • the M2M terminal that requests the access is allocated a group common bearer resource, which is specifically:
  • the core network side device assigns the created group of common bearer resources to the M2M terminal requesting access in the MTC Group.
  • the M2M terminal that is requested to access the group to share the common bearer resource specifically: the core network side device according to the MTC Group identifier carried in the access request of the M2M terminal, or according to the subscription data of the M2M terminal that is requested to access Whether the MTC Group attribute is included, and whether the M2M terminal belongs to the MTC Group;
  • the invention also provides a data transmission method, the method comprising:
  • the core network side device allocates a common bearer resource for the M2M terminal requested to access in the MTC Group;
  • the core network side device creates and stores a correspondence between a wireless access network bearer channel and a group common bearer channel of each M2M terminal in the MTC group, and performs uplink and downlink transmission of data according to the corresponding relationship.
  • the corresponding relationship includes: an identifier of the M2M terminal, an IP address of the M2M terminal, an MTC Group identifier, a wireless port port identifier, and a public port port identifier.
  • the core network side device searches according to the identifier or IP address of the M2M terminal carried in the uplink data packet.
  • Corresponding public port tunnel port identifiers in the corresponding relationship, and forwarding the uplink data packet to a corresponding public bearer tunnel port;
  • the core network side device When receiving the downlink data packet sent to the M2M terminal in the MTC Group, the core network side device identifies the MTC Group identifier to which the downlink data packet belongs according to the IP address segment in the MTC Group, and forwards the downlink data packet to the corresponding office. And the core network side device searches for a corresponding radio bearer port identifier in the corresponding relationship according to the identifier or IP address of the M2M terminal carried in the downlink data packet, and the core network side device searches for the corresponding radio bearer port identifier in the corresponding relationship, and the The uplink packet is forwarded to the corresponding radio bearer tunnel port.
  • the present invention also provides a core network side device, including: a mobility management entity (MME), a serving gateway (S-GW), and a packet data network gateway (P-GW), where
  • MME mobility management entity
  • S-GW serving gateway
  • P-GW packet data network gateway
  • the S-GW and the P-GW are configured to establish a group public bearer resource for the M2M terminal in the MTC Group;
  • the MME is configured to receive an access request of the M2M terminal in the MTC Group, and request the S-GW and the P-GW to activate or create a group public bearer resource, and if the group public bearer resource is established,
  • the group public bearer resources established by the S-GW and the P-GW for the MTC Group are allocated to the M2M terminal requesting access.
  • the S-GW and the P-GW are further configured to reserve a group common bearer resource of the MTC group, and activate the reserved group public bearer resource when the M2M terminal in the MTC group accesses for the first time; And for assigning the activated group of common bearer resources to any M2M terminal requesting access within the MTC Group.
  • the S-GW and the P-GW are further configured to: when the M2M terminal in the MTC Group accesses for the first time, create a group public bearer resource of the MTC Group; For assigning the created group of common bearer resources to any M2M terminal requesting access within the MTC Group.
  • the MME is further configured to: according to the MTC Group identifier carried in the access request of the M2M terminal, or whether the MTC Group attribute is included in the subscription data of the M2M terminal that is requested to be accessed, and whether the M2M terminal belongs to the MTC Group;
  • the group common bearer resource is not activated or created for the M2M terminal.
  • the S-GW is further configured to: create and store a correspondence between a radio access network bearer channel and a group common bearer channel of each M2M terminal in the MTC group, where the correspondence includes: an identifier of the M2M terminal, and an M2M terminal IP address, MTC Group ID, radio bearer tunnel port ID, public port tunnel port ID.
  • the S-GW is further configured to: when receiving the uplink data packet sent by the M2M terminal in the MTC Group via the radio access network bearer channel, according to the M2M carried in the uplink data packet An identifier or an IP address of the terminal, searching for a corresponding public 7-port tunnel port identifier in the corresponding relationship, and forwarding the uplink data packet to a corresponding public bearer tunnel port.
  • the P-GW is further configured to, when receiving the downlink data packet sent to the M2M terminal in the MTC Group, identify the MTC Group identifier to which the downlink data packet belongs according to the IP address segment in the MTC Group, and configure the downlink data packet Forwarding to the public bearer tunnel port corresponding to the MTC Group identifier;
  • the S-GW is further configured to: when receiving the downlink data packet from the P-GW, search for a corresponding one of the corresponding relationships according to an identifier or an IP address of the M2M terminal carried in the downlink data packet
  • the radio bearers the tunnel port identifier and forwards the uplink data packet to the corresponding radio bearer tunnel port.
  • the method for establishing a public bearer, the data transmission method and the core network side device provided by the present invention classify a large number of M2M terminals with low data volume into multiple MTCs according to the principle of the same region or the same user at the time of signing.
  • the network establishes a common bearer shared by the devices in the group for each MTC Group, which saves network resources and reduces unnecessary overhead of frequently creating and unregistering bearers.
  • multiple devices share resources and effectively prevent EPS high bandwidth.
  • the inefficiency of the bearer ensures the reasonable allocation of network resources and the efficiency of the use of public bearers.
  • FIG. 1 is a schematic structural diagram of an EPS network system in the prior art
  • FIG. 2 is a flow chart of attaching an MTC UE to an EPS network in the prior art
  • FIG. 3 is a flow chart of a method for establishing a public bearer according to the present invention.
  • FIG. 4 is a flowchart of attaching an MTC UE to an EPS network according to Embodiment 1 of the present invention
  • FIG. 5 is a flowchart of attaching an MTC UE to an EPS network according to Embodiment 2 of the present invention
  • FIG. 6 is an MTC UE attached according to Embodiment 3 of the present invention
  • FIG. 7 is a flowchart of attaching an MTC UE to an EPS network according to Embodiment 4 of the present invention.
  • a method for establishing a public bearer based on MTC Group optimization mainly includes the following steps:
  • Step 301 The core network side device establishes a group public bearer resource for the M2M terminal in the MTC Group.
  • Step 302 When the M2M terminal in the MTC Group accesses the EPC, the core network device allocates the group common bearer resource for the M2M terminal requesting access.
  • the first mode Pre-press the MTC Group to reserve the group common bearer resources in the relevant network elements of the network.
  • the M2M terminal in the MTC Group accesses the network for the first time, activate the group public bearer resources reserved by the network;
  • the activated public bearer resource is assigned to the M2M terminal in the MTC Group in the attaching process, so that the device in the MTC Group can share the shared bearer after accessing the device.
  • Resources to implement M2M services For example: There are four M2M terminals A, B, C, and D in an MTC Group.
  • the M2M terminal that accesses the network for the first time in the MTC Group is the terminal A
  • the active network is the MTC Group.
  • the reserved group public bearer resources, and the activated public bearer resources are allocated to the terminal A; when the terminal B accesses the network, the activated public bearer resources are directly assigned to the terminal B in the attaching process of the terminal B.
  • the terminal C or D accesses the network, the public bearer resource that has been activated is directly assigned to the terminal C or D in the attaching process of the terminal C or D.
  • the second mode the group public bearer resources in the MTC Group are reserved in the network element of the network in advance.
  • the core network side The device creates a group common bearer resource for the MTC group; when a subsequent M2M terminal accesses the network in the MTC Group, the established group public bearer resource is assigned to the M2M terminal in the MTC Group in the attaching process, After the devices in the MTC Group are connected, the group common bearer resources can be shared to implement the M2M service. For example, there are four M2M terminals A, B, C, and D in an MTC Group.
  • the core network side device is the The MTC group creates a group common bearer resource, and allocates the created group common bearer resource to the terminal A.
  • the established public bearer resource is directly assigned to the terminal in the attaching process of the terminal B.
  • the terminal C or D accesses the network, the established public bearer resource is directly assigned to the terminal C or D in the attaching process of the terminal C or D.
  • the core network side device receives the access request of the M2M terminal, according to the MTC Group identifier carried in the access request of the M2M terminal, or according to the subscription data of the M2M terminal that is requested to access, whether the MTC Group attribute is included, To identify whether the M2M terminal belongs to the MTC Group;
  • the above two methods are to establish a common bearer channel for the MTC Group on the core network side of the EPC, but on the wireless network side of the radio access technology (RAT, Radio Access Technology), it is also required for each M2M terminal.
  • the radio bearer channel of the terminal to the eNodeB and the access bearer channel of the eNodeB to the S-GW are separately established, and the radio bearer channel and the access bearer channel may be collectively referred to as a radio access network bearer channel. Therefore, the S-GW needs to create and save the radio access network bearer channel and the group common bearer channel of each M2M terminal in the MTC Group.
  • the correspondence may include information such as an identifier (ID) of the M2M terminal, an IP address of the M2M terminal, an MTC Group identifier, a radio bearer tunnel port identifier, and a public bearer tunnel port identifier.
  • ID an identifier
  • the S-GW uses the ID or IP address of the M2M terminal in the data packet as the uplink data packet according to the corresponding relationship.
  • the corresponding network side common bearer channel is found, and the uplink data packet is forwarded to the public bearer tunnel port.
  • the P-GW can identify that the downlink data packet belongs to the device in the MTC Group through the IP address segment in the MTC Group, and then forward the downlink data packet to the corresponding MTC.
  • the public bearer tunnel port of the group when the downlink data packet is sent to the S-GW, the S-GW will downlink according to the ID of the M2M terminal or the IP address of the M2M terminal, and the corresponding relationship between the radio access network bearer channel of the device and the common bearer channel. The packet is forwarded to the corresponding radio bearer tunnel port.
  • the network is a contracted MTC Group that reserves a group common bearer resource in the relevant network element.
  • the network activates the group of the MTC Group.
  • the public bearer resource completes the establishment of the shared bearer shared within the group.
  • the correspondence between the radio access network channel of each M2M terminal in the MTC Group and the common bearer channel in the core network side group needs to be created and saved.
  • Step 401 The M2M terminal (that is, the MTC UE shown in FIG. 4) signs the MTC Group ID (ie, the MTC Group ID) when signing the contract, and the MTC Group may sign according to the same industry user or the same area.
  • MTC Group ID ie, the MTC Group ID
  • the MTC Group may sign according to the same industry user or the same area.
  • a plurality of MTC Groups are contracted in the EPC network.
  • the EPC network reserves the common bearer resources, such as tunnel traffic, for the MTC Groups on the S-GW and the P-GW according to the configuration tools such as the network management configuration server. Template (TFT, Tunnel Flow Template) port, S-GW address and TEID, P-GW address and TEID, group QoS rules and other resources.
  • Step 402 When the MTC UE belonging to the MTC Group accesses the EPS network for the first time, initiate a network attach request to the eNodeB, where the request carries the information such as the IMSI, the MTC Group ID, the MTC UE network access capability, and the request for IP allocation. .
  • the IP address of the MTC UE can be statically configured, or the dynamically assigned IP address can be obtained through the Domain Name System (DNS) server.
  • DNS Domain Name System
  • the MTC Group ID is used to indicate that the MTC UE belongs to the MTC Group identified by this ID.
  • Step 403 The eNodeB selects an MME to serve the MTC UE, and forwards the attach request to the MME, and also carries important information such as the MTC UE identifier and the MTC Group ID to the MME.
  • Step 404 The MME performs an authentication process, and then sends a location update request to the HSS of the home network, where the MME carries the identifier of the MME and the identifier of the MTC UE.
  • the HSS searches for the subscriber data of the MTC UE according to the identifier of the MTC UE and sends the data to the MME.
  • the subscriber data mainly includes the default APN, the bandwidth size, and the like.
  • the MTC Group ID is also included to indicate which group the MTC UE belongs to.
  • Step 405 The MME receives the subscription user data, and checks whether the MTC UE is allowed to access the network. If the MME finds that the MTC UE has roaming restrictions or access restrictions, the MME will prohibit the MTC UE from attaching and notify the HSS.
  • the MME searches for the group public bearer corresponding to the MTC Group ID according to the MTC Group ID carried in the attached message by the MTC UE or the MTC Group ID in the subscription user data. If the terminal in the MTC Group accesses for the first time and the group public bearer is not activated, the MME sends a group public bearer activation request of the MTC Group to the S-GW, where the MTC Group ID and the assigned group public bearer ID (MTC Group LID) are carried. .
  • Step 406 After receiving the group public bearer activation request of the MTC Group, if the S-GW finds that the group public bearer of the MTC Group has been activated, the S-GW directly jumps to step 407; If the group public bearer of the group is not activated, the TEID port of the S-GW reserved for the MTC Group ID is activated, the TEID port corresponding to the P-GW side is configured, and the active group request is sent to the P-GW, where the MTC is carried. Group ID, MTC Group LID and other information.
  • the P-GW activates the TFT port and the TEID port reserved for the MTC Group ID, and configures the TEID port corresponding to the S-GW side, allocates the group QoS, and notifies the S-GW that the reserved group common bearer resource is activated.
  • the public bearer channel reserved for the MTC Group ID on the core network side is activated.
  • Step 407 After the public bearer is activated, the S-GW sends an active public bearer response to the MME to the MME, where the information carries the information such as the MTC Group LID, the address of the P-GW, the address of the S-GW, and the S-GW TEID, indicating the group public bearer. activated.
  • Step 408 The MME associates the MTC Group ID, the MTC Group LID, and the address of the S-GW.
  • the message carries the MTC Group LID, the address of the P-GW, the address of the S-GW, and the S -GW TEID and other information.
  • Step 409 The eNodeB sends a radio bearer setup request to the MTC UE, and the MTC UE saves related information such as QoS established by the bearer, and opens the corresponding TFT port.
  • the request carries: a radio bearer ID, a P-GW address, bandwidth information, and the like.
  • the MTC UE sends a radio bearer setup complete message to the eNodeB, and the MTC UE and the eNodeB have established a radio bearer channel and use the radio bearer ID for identification.
  • Step 410 The eNodeB sends an attach complete message to the MME, where the eNodeB TEID, the eNodeB address, and the like are carried, and the MME attach procedure is notified.
  • Step 411 The MME sends an update bearer request to the S-GW, where the identifier of the MTC UE and the MTC Group LID are carried, and the information of the TEID of the eNodeB and the address of the eNodeB that the S-GW serves for the MTC UE are notified.
  • Step 412 The S-GW identifies, according to the MTC Group LID, that the uplink and downlink addresses and ports of the public bearer of the group are updated, and saves the identifier of the MTC UE/the IP address of the MTC UE, and the MTC Group. Correspondence between the LID, the eNodeB TEID, and the S-GW TEID.
  • the MTC UE sends or receives the uplink and downlink data packets, it can identify the MTC UE or the IP address of the MTC UE according to the identifier of the MTC UE, and forward the data packet to the corresponding according to the corresponding relationship. Port.
  • Step 413 The S-GW sends an update bearer response to the MME, indicating that the GTP tunnel (S1 user plane access bearer) of the eNodeB to the S-GW has been successfully established, and the MTC UE can send or receive the context data packet through the S-GW.
  • GTP tunnel S1 user plane access bearer
  • the network has activated the group common bearer resources reserved for the MTC Group, and establishes a group common bearer of the MTC Group.
  • the network directly The established group public bearer is assigned to the M2M terminal that initiated the attach request.
  • the correspondence between the radio access network bearer channel of each M2M terminal accessed in the MTC Group and the common bearer channel in the core network side group needs to be created and saved.
  • Step 501 When the M2M terminal in the MTC Group accesses for the first time, the MME requests the S-GW to activate the public bearer, and the S-GW/P-GW activates the TFT port, the S-GW address, the TEID, and the P-GW address for the MTC Group. For the TEID, the group QoS rule, and other resources, the public bearer resource reserved by the MTC Group is activated.
  • the group public bearer identified by the MTC Group LID between the S-GW and the P-GW can be shared by the devices in the MTC Group.
  • Step 502 When the other MTC UEs belonging to the MTC group access the EPS network, initiate a network attach request to the eNodeB, where the information such as the IMSI, the MTC Group ID, and the network access capability of the MTC UE are carried.
  • the IP address of the MTC UE can be statically configured, or the dynamically assigned IP address can be obtained through the DNS server.
  • the MTC Group ID indicates that the MTC UE belongs to the MTC Group identified by the ID.
  • Step 503 The eNodeB forwards the attach request to the MME, and also carries important information such as the identifier of the MTC UE and the MTC Group ID to the MME.
  • Step 504 The MME performs an authentication process, and then sends a location update request to the HSS of the home network, where the identifier of the MME and the identifier of the MTC UE are carried.
  • the HSS searches for the subscriber data of the MTC UE according to the identifier of the MTC UE and sends the data to the MME.
  • the subscriber data mainly includes information such as APN, bandwidth, and the like, and also includes the MTC Group ID.
  • Step 505 The MME receives the user subscription data, and checks whether the MTC UE is allowed to access the network. If the MME finds that the MTC UE has roaming restrictions or access restrictions, the MME prohibits the MTC UE from attaching and notifies the HSS.
  • the MME searches for the group public bearer corresponding to the MTC Group ID according to the MTC Group ID carried in the attached message by the MTC UE or according to the MTC Group ID in the subscription user data. If the group public bearer is activated, the MME finds the MTC Group LID, the address of the P-GW, the address of the S-GW, and the S-GW TEID from the associated data of the MTC Group, and sends an attach accept message to the eNodeB, indicating that the MTC UE is attached. A request to the network has been accepted.
  • the group common bearer of the MTC Group needs to be created when the M2M terminal in the MTC Group accesses for the first time.
  • the correspondence between the radio access network bearer channel of each M2M terminal accessed in the MTC Group and the group public channel on the core network side needs to be created and saved.
  • Step 601 When the MTC UE belonging to the MTC Group accesses the EPS network for the first time, it initiates a network attach request to the eNodeB, and carries information such as an IMSI, an MTC Group ID, a network access capability of the MTC UE, and an instruction to allocate an IP.
  • information such as an IMSI, an MTC Group ID, a network access capability of the MTC UE, and an instruction to allocate an IP.
  • IP address of the MTC UE can be statically configured, or the dynamically assigned IP address can be obtained through the DNS server.
  • Step 602 The eNodeB selects an MME for the MTC UE to serve, and attaches The request is forwarded to the MME, and important information such as the identifier of the MTC UE and the MTC Group ID is also carried to the MME.
  • Step 603 The MME performs an authentication process, and then sends a location update request to the HSS of the home network, where the MME carries the identifier of the MME and the identifier of the MTC UE.
  • the HSS finds the subscriber data of the MTC UE according to the identifier of the MTC UE and sends it to the MME.
  • the subscriber data mainly includes information such as APN, bandwidth, and the MTC Group ID.
  • the MME receives the user subscription data and checks whether the MTC UE is allowed to access the network. If the MME finds that the MTC UE has roaming restrictions or access restrictions, the MME will prohibit the MTC UE from attaching and notify the HSS.
  • Step 604 If the MTC UE has no access restriction, the MME searches for the group public bearer corresponding to the MTC Group ID according to the MTC Group ID carried by the MTC UE in the attach message or according to the MTC Group ID in the subscription data. If the terminal is first accessed in the MTC Group and the group public bearer is not created, the MME sends a create group common bearer request to the S-GW, where the request carries the MTC UE identifier, the MTC Group ID, the MTC Group LID, the P-GW address, and the like. information.
  • Step 605 After receiving the group public bearer creation request, if the group public bearer is found to be created, the S-GW directly jumps to step 608 to send a create group public bearer response message to the MME; if the group public bearer is not created, then S - GW creates a new entry for the group public bearer and then sends a group public bearer request to the P-GW to create the MTC Group. In the request, the S-GW informs the P-GW of the necessary information: the MTC Group LID, the address and TEID of the S-GW, and the default bandwidth information.
  • Step 606 If necessary, the P-GW requests the PCRF to configure the QoS policy and the charging rule for the MTC Group, and the PCRF sends the PCC rule corresponding to the MTC Group to the P-GW.
  • Step 607 The P-GW establishes a group public bearer according to the policy and charging decision information returned by the PCRF, and returns a group public bearer setup response to the S-GW, where the response carries With the MTC Group public bearer ID, P-GW address and TEID information.
  • Step 608 The S-GW updates and saves the MTC Group LID corresponding to the MTC Group identifier, the address of the P-GW, and the TEID, and the GTP public tunnel of the S-GW to the P-GW is successfully established.
  • the S-GW sends a create group public bearer response to the MME to the MME, where the response carries the information such as the MTC Group LID, the address of the P-GW, the address of the S-GW, and the S-GW TEID, indicating the public bearer. Created.
  • the network has created a group common bearer resource for the MTC Group, and established a group common bearer of the MTC Group; when other M2M terminals of the MTC Group access the network, the network directly will be established.
  • the group public bearer is assigned to the M2M terminal that initiated the attach request.
  • the correspondence between the radio access network bearer channel of each M2M terminal in the MTC Group and the common bearer channel in the group on the core network side needs to be created and saved.
  • Step 701 When the M2M terminal in the MTC Group accesses for the first time, the MME requests to create a group public bearer of the MTC Group. After receiving the group public bearer creation request, the S-GW/P-GW allocates a TFT port to the MTC Group, and the S- The GW address and the resources such as the TEID, the P-GW address, and the TEID successfully create a group public bearer identified by the MTC Group LID between the S-GW and the P-GW.
  • Step 702 When the other MTC UEs belonging to the MTC Group access the EPS network, initiate a network attach request to the eNodeB, where the information such as the IMSI, the MTC Group ID, and the network access capability of the MTC UE are carried.
  • IP address of the MTC UE can be statically configured, or the dynamically assigned IP address can be obtained through the DNS server.
  • Step 703 The eNodeB forwards the attach request to the MME, and simultaneously marks the MTC UE. Important information such as knowledge and MTC Group ID is also carried to the MME.
  • Step 704 The MME performs an authentication process, and then sends a location update request to the HSS of the home network, where the MME carries the identifier of the MME and the identifier of the MTC UE.
  • the HSS finds the subscriber data of the MTC UE according to the identifier of the MTC UE and sends it to the MME.
  • the subscriber data mainly includes information such as APN, bandwidth, and the MTC Group ID.
  • Step 705 The MME receives the user subscription data, and checks whether the MTC UE is allowed to access the network. If the MME finds that the MTC UE has roaming restrictions or access restrictions, the MME will prohibit the MTC UE from attaching and notify the HSS.
  • the MME searches for the group public bearer corresponding to the MTC Group ID according to the MTC Group ID carried in the attached message by the MTC UE or the MTC Group ID in the subscription user data. If the group public bearer has been created, the MME finds the MTC Group LID, the address of the P-GW, the address of the S-GW, and the S-GW TEID from the associated data of the MTC Group, and sends an attach accept message to the eNodeB, indicating that the MTC UE is attached. A request to the network has been accepted.
  • Step 706 The eNodeB sends a radio bearer setup request to the MTC UE, and the MTC UE saves related information such as QoS established by the bearer, and opens the corresponding TFT port.
  • the radio bearer setup request carries: a radio bearer ID, a P-GW address, bandwidth information, and the like.
  • the MTC UE sends a radio bearer setup complete message to the eNodeB, and the MTC UE and the eNodeB have established a radio bearer channel, and the radio bearer ID is used for identification.
  • Step 707 The eNodeB sends an attach complete message to the MME, where the message carries information such as the eNodeB TEID and the eNodeB address, and notifies the MME that the attach process is complete.
  • Step 708 The MME sends an update bearer request to the S-GW, which carries the identifier of the MTC UE, the MTC Group LID, and notifies the S-GW of the TEID of the eNodeB served by the MTC UE, the address of the eNodeB, and the like.
  • Step 709 The S-GW identifies, according to the MTC Group LID, that the public bearer of the update group is up and down.
  • the row address and the port are used to store the mapping between the MTC UE's identity/the MTC UE's IP address, the MTC Group LID, the eNodeB TEID, and the S-GW TEID.
  • the MTC UE sends or receives the uplink and downlink data packets, the MTC UE can be used.
  • the identifier or the IP address of the MTC UE is identified, and the data packet is forwarded to the corresponding port according to the above correspondence.
  • Step 710 The S-GW sends an update bearer response to the MME, indicating that the GTP tunnel (S1 user plane access bearer) of the eNodeB to the S-GW has been successfully established, and the MTC UE can send or receive the context data packet through the S-GW.
  • GTP tunnel S1 user plane access bearer
  • the method for implementing the above-mentioned common bearer establishment in the present invention, and the core network side device of the data transmission method are composed of: an MME, an S-GW, and a P-GW, where the S-GW and the P-GW are used for the MTC Group.
  • the M2M terminal establishes a group common bearer resource; the MME is configured to receive an access request of the M2M terminal in the MTC Group, and request activation or create a group public bearer from the S-GW and the P-GW, if the group public bearer is established,
  • the group public bearer resources established by the S-GW and the P-GW for the MTC Group are allocated to the M2M terminal requesting access.
  • the S-GW and the P-GW are further configured to reserve a group common bearer resource of the MTC Group, and activate the reserved group common bearer resource when the M2M terminal in the MTC Group accesses for the first time;
  • the activated group common bearer resources are assigned to any M2M terminal within the MTC Group requesting access.
  • the S-GW and the P-GW do not reserve the group common bearer resource of the MTC Group, and when the M2M terminal in the MTC Group accesses for the first time, the group public bearer resource of the MTC Group is created; and is also used to share the created group.
  • the bearer resources are assigned to any M2M terminal within the MTC Group requesting access.
  • the MME is further configured to: identify, according to the MTC Group identifier carried in the access request of the M2M terminal, whether the M2M terminal belongs to the MTC Group according to whether the MTC Group attribute of the M2M terminal that is requested to be accessed includes the MTC Group attribute; If yes, it identifies whether the corresponding group public bearer resource is activated or created according to the MTC Group identifier.
  • the group public bearer resource that is activated or created is directly assigned to the M2M terminal; And creating, requesting the S-GW and the P-GW to activate or create a group public bearer resource corresponding to the MTC Group identifier, and assigning to the M2M terminal; if not, the group public bearer resource need not be activated or created for the M2M terminal.
  • the S-GW is further configured to: create and store a correspondence between a radio access network bearer channel and a group common bearer channel of each M2M terminal in the MTC group, where the correspondence includes: an identifier of the M2M terminal, and an M2M terminal IP address, MTC Group ID, radio bearer tunnel port ID, public tunnel port ID.
  • the S-GW When receiving the uplink data packet sent by the M2M terminal in the MTC Group via the radio access network bearer channel, the S-GW searches for the corresponding common bearer tunnel port in the corresponding relationship according to the identifier or IP address of the M2M terminal carried in the uplink data packet. Identifies and forwards the upstream packet to the corresponding public bearer tunnel port.
  • the P-GW When receiving the downlink data packet sent to the M2M terminal in the MTC Group, the P-GW identifies the MTC Group identifier to which the downlink data packet belongs according to the IP address segment in the MTC Group, and forwards the downlink data packet to the public corresponding to the MTC Group identifier.
  • the S-GW searches for the corresponding radio bearer port identifier in the corresponding relationship according to the identifier or IP address of the M2M terminal carried in the downlink data packet. And forward the upstream packet to the corresponding radio bearer tunnel port.
  • the present invention divides a large number of M2M terminals with a small amount of data into multiple MTC Groups according to the same region or the same user at the time of signing, and the network establishes a common bearer shared by the devices in the group for each MTC Group. This not only saves network resources, but also reduces the unnecessary overhead of frequently creating and unregistering bearers. Moreover, multiple devices share resources, which effectively prevents the inefficiency of EPS high-bandwidth bearers and ensures the rational allocation of network resources and public bearers. Use efficiency.

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  • Quality & Reliability (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Mobile Radio Communication Systems (AREA)

Abstract

La présente invention porte sur un procédé d'établissement de support public, qui comprend les opérations suivantes : un appareil du côté du cœur de réseau établit des ressources de support public de groupe pour un terminal de communication entre machines (M2M) dans un groupe de communication entre machines (groupe MTC); lorsque le terminal M2M du groupe MTC accède à un réseau par paquet évolué (EPC), l'appareil du côté du cœur de réseau alloue les ressources de support public de groupe au terminal M2M demandant un accès. La présente invention porte également sur un procédé de transmission de données, qui comprend les opérations suivantes : un appareil du côté du cœur de réseau alloue des ressources de support public à un terminal M2M dans un groupe MTC, qui demande un accès; l'appareil du côté du cœur de réseau établit et stocke des relations de correspondance entre des tunnels de support de réseau d'accès radio et des tunnels de support public de groupe de chaque terminal M2M du groupe MTC, et réalise une transmission de données en liaison montante et en liaison descendante conformément aux relations de correspondance. Avec la présente invention, le problème d'occupation de nombreuses ressources de réseau lorsqu'un grand nombre de terminaux M2M accèdent au réseau, est résolu.
PCT/CN2010/077744 2009-11-23 2010-10-14 Procédé d'établissement de support public, procédé de transmission de données et appareil du côté du cœur de réseau WO2011060673A1 (fr)

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