WO2015100537A1 - 传输装置、用户面节点和控制面节点及数据传输方法 - Google Patents

传输装置、用户面节点和控制面节点及数据传输方法 Download PDF

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Publication number
WO2015100537A1
WO2015100537A1 PCT/CN2013/090884 CN2013090884W WO2015100537A1 WO 2015100537 A1 WO2015100537 A1 WO 2015100537A1 CN 2013090884 W CN2013090884 W CN 2013090884W WO 2015100537 A1 WO2015100537 A1 WO 2015100537A1
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Prior art keywords
tmsi
plane node
user plane
node
control plane
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PCT/CN2013/090884
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English (en)
French (fr)
Inventor
张万强
时晓岩
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华为技术有限公司
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Application filed by 华为技术有限公司 filed Critical 华为技术有限公司
Priority to PCT/CN2013/090884 priority Critical patent/WO2015100537A1/zh
Priority to CN201380046159.0A priority patent/CN105075336A/zh
Publication of WO2015100537A1 publication Critical patent/WO2015100537A1/zh

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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W76/00—Connection management
    • H04W76/10—Connection setup
    • H04W76/11—Allocation or use of connection identifiers

Definitions

  • the present invention relates to the field of communications technologies, and in particular, to a data transmission method, and to a transmission device, a user plane node, and a control plane node using the data connection transmission method.
  • EPC Evolved Packet Core
  • UE User Equipment, user equipment
  • MME Mobility Management
  • Entity the mobility management entity
  • MME Mobility Management Entity
  • the MME saves the bearer context corresponding to the bearer
  • the UE initiates random access and RRC (Radio Resource) to the base station.
  • Control radio resource control
  • RRC Radio Resource
  • Control radio resource control
  • the base station initiates connection establishment to the MME according to the service request
  • the MME is in the base station and the S-GW according to the bearer context of the UE.
  • S-GW Packet Control Protocol
  • a tunnel is established between the gateway and the packet data gateway, whereby the data packets sent by the UE to the base station can be transmitted on the tunnel, thereby completing the data service.
  • the MME plays an important role in the process of the UE performing data services, and undertakes most of the signaling interactions. However, because of this, each time the UE initiates a data packet transmission, the UE needs to perform multiple signaling interactions between the MME and the S-GW or the P-GW to complete the data packet transmission. If the data volume of the data packet is relatively small, the overhead of the signaling plane is far greater than the actual amount of data transmitted, which affects the efficiency of the network. Further, if the UE frequently initiates the transmission of small data packets, it will cause network Frequent signaling interactions cause network congestion.
  • the prior art proposes a solution, and proposes that the UE still needs to establish a bearer in the MME in advance, but the MME needs to send the identifier information to the UE in the bearer setup process, and the identifier information includes the S-GW corresponding to the bearer or P-GW address and corresponding TEID (Tunnel Endpoint Identification, tunnel endpoint identification).
  • the UE can send the data packet and the identifier information to the base station via the RRC connection establishment process, and the base station can parse the identifier information to obtain the address of the S-GW or the P-GW and the corresponding TEID, according to the address of the S-GW or the P-GW.
  • the S-GW or the P-GW corresponding to the bearer is determined, and the data packet is transmitted to the S-GW or the P-GW according to the TEID, thereby completing the data packet transmission.
  • the solution does not require the MME to participate in the data packet transmission initiated by the UE, which saves part of the signaling interaction and improves the network transmission efficiency.
  • the inventor of the present invention found in the long-term research and development that although the above solution can save signaling interaction, it is difficult to grasp the length of the identification information in the specific implementation, and if the identification information is long, the amount of data contained in the identification is small. The transmission efficiency is reduced. If the length of the identification information is short, it is necessary to consider how to enable the base station to correctly resolve the address of the S-GW or the P-GW and the corresponding TEID. Therefore, the prior art is difficult to effectively improve the transmission efficiency. Also, if using DNS (Domain Name Service, domain name resolution server), need to add additional signaling interactions, thereby increasing the network burden. Moreover, further, since the identification information sent by the UE to the base station belongs to the display transmission on the air interface, the identification information brings a potential security risk.
  • DNS Domain Name Service, domain name resolution server
  • the embodiments of the present invention provide a transmission device, a user plane node, a control plane node, and a data transmission method, which can solve the problem that the prior art is difficult to effectively improve transmission efficiency and has a security risk.
  • a first aspect of the embodiments of the present invention provides a transmission apparatus for data transmission, including: a receiving module, configured to receive a TMSI and a to-be-transmitted data packet sent by a user equipment, where the TMSI is allocated by the control plane node to the a user equipment, and the TMSI is sent by the control plane node to a specific user plane node; a selection module, configured to select the specific user plane node from a plurality of candidate user plane nodes according to the TMSI, or according to The selection result pre-negotiated with the control plane node selects the specific user plane node from a plurality of candidate user plane nodes; the sending module is configured to send the to-be-transmitted data packet and the TMSI to the user Face node.
  • the receiving module is further configured to receive, by the user equipment, a bearer identifier that is used to identify a bearer context, where the sending module is further configured to: The bearer identifier is sent to the user plane node.
  • the TMSI includes node matching information
  • the selecting module is specifically configured to be used according to a predetermined node. The correspondence between the matching information and the user plane node selects a user plane node corresponding to the node matching information in the TMSI.
  • the receiving module is further configured to: at the Before the user plane node corresponding to the node matching information in the TMSI is selected, the corresponding relationship between the node matching information sent by the control plane node and the user plane node is received.
  • the base station further includes a configuration module, where the configuration module is configured to perform, according to the predetermined node, the selection module Before the matching of the matching information and the user plane node, the user plane node corresponding to the node matching information in the TMSI is selected, and the corresponding relationship between the node matching information and the user plane node is jointly negotiated with the control plane node.
  • the node matching information is a mobility management entity identifier code MMEC or a network resource identifier NRI.
  • the sending module is specifically configured to encapsulate the to-be-transmitted in GTP-U data or GTP-C data. a data packet, the TMSI, and the bearer identifier, and transmitting the GTP-U data or the GTP-C data to the user plane node.
  • the TMSI is S-TMSI or P-TMSI
  • the control plane node is an MME
  • the control plane node is an SGSN
  • a second aspect of the embodiments of the present invention provides a user plane node, including: a marking module, configured to mark a user equipment by using a TMSI sent by a control plane node, and a receiving module, configured to receive, by the transmission device, a to-be-transmitted transmission from the user equipment. a data packet and the TMSI; a transmission module, configured to determine, according to the TMSI, a bearer context corresponding to the user equipment, and transmit the to-be-transmitted data packet according to the bearer context.
  • the receiving module is further configured to receive, by the transmitting device, a bearer identifier that is used by the user equipment to identify a bearer context;
  • the transmission module is further configured to determine, according to the at least two bearer contexts corresponding to the user equipment, a bearer context corresponding to the bearer identifier from the at least two bearer contexts corresponding to the user equipment.
  • the receiving module is specifically configured to receive GTP-U data or GTP-C data sent by the transmitting device. And acquiring the to-be-transmitted data packet, the TMSI, and the bearer identifier from the GTP-U data or the GTP-C data.
  • the marking module is specifically configured to create a session sent from a control plane node
  • the TMSI is obtained by requesting or modifying a bearer request, and the user equipment is marked by the TMSI.
  • the TMSI is S-TMSI or P-TMSI
  • the control plane node is an MME
  • the control plane node is an SGSN
  • a third aspect of the embodiments of the present invention provides a control plane node, including: an allocation module, configured to allocate a TMSI to a user equipment, and a selection module, configured to select the specific one from a plurality of candidate user plane nodes according to the TMSI
  • the user plane node selects the specific user plane node from a plurality of candidate user plane nodes according to a selection result pre-negotiated with the transmission device; and the sending module is configured to send the TMSI to the user plane node.
  • the TMSI includes node matching information
  • the selecting module is specifically configured to determine, according to a correspondence between a predetermined node matching information and a user plane node, The user plane node corresponding to the node matching information in the TMSI.
  • the control plane node further includes a configuration module, where the configuration module is configured to The selecting module selects the specific user plane node from the plurality of candidate user plane nodes according to the TMSI, or selects the specific user plane from the plurality of candidate user plane nodes according to a selection result pre-negotiated with the transmission device Before the node, the corresponding relationship between the node matching information and the user plane node is configured; the sending module is further configured to send the correspondence between the node matching information and the user plane node to the transmitting device.
  • control plane node further includes a configuration module, where the configuration module is used to The selecting module selects the specific user plane node from the plurality of candidate user plane nodes according to the TMSI, or selects the specific user plane from the plurality of candidate user plane nodes according to a selection result pre-negotiated with the transmission device Before the node, the correspondence between the node matching information and the user plane node is configured in cooperation with the transmitting device.
  • the sending module is specifically configured to create a session request or Transmitting the bearer request to carry the TMSI, and sending the create session request or the modify bearer request to the user plane node.
  • a fourth aspect of the embodiments of the present invention provides a data transmission method, including: a transmission apparatus receiving a TMSI and a to-be-transmitted data packet sent by a user equipment, where the TMSI is allocated to the user equipment by a control plane node, and the TMSI And being sent by the control plane node to a specific user plane node; selecting the specific user plane node from the plurality of candidate user plane nodes according to the TMSI, or according to a selection result pre-negotiated with the control plane node Selecting the specific user plane node among the plurality of candidate user plane nodes; and transmitting the to-be-transmitted data packet and the TMSI to the user plane node.
  • the step of receiving the TMSI and the to-be-transmitted data packet sent by the user equipment further includes: receiving, by the user equipment, The step of transmitting the data packet to be transmitted and the TMSI to the user plane node further includes: sending the bearer identifier to the user plane node.
  • the TMSI includes node matching information
  • the multiple The step of selecting the specific user plane node in the user plane node is specifically: selecting a user plane node corresponding to the node matching information in the TMSI according to the correspondence between the predetermined node matching information and the user plane node.
  • the node matching information is a mobility management entity identifier code MMEC or a network resource identifier NRI.
  • the sending the data packet to be transmitted, the TMSI, and the bearer identifier to the user The step of the polygon node is specifically: encapsulating the to-be-transmitted data packet, the TMSI, and the bearer identifier in GTP-U data or GTP-C data, and the GTP-U data or the GTP-C data Sent to the user plane node.
  • the TMSI is S-TMSI or P-TMSI
  • the TMSI is S-TMSI
  • the control plane node is an MME
  • the TMSI is P-TMSI
  • the control plane node is an SGSN.
  • a fifth aspect of the embodiments of the present invention provides a data transmission method, including: a user plane node uses a TMSI tagged user equipment sent by a control plane node; and receives a data packet to be transmitted from the user equipment and the TMSI sent by the transmission device; Determining, according to the TMSI, a bearer context corresponding to the user equipment, and transmitting the to-be-transmitted data packet according to the bearer context.
  • the step that the receiving transmission device sends the data packet to be transmitted from the user equipment and the TMSI further includes: receiving the transmitting device And the step of determining, according to the TMSI, a bearer context corresponding to the user equipment, where the bearer context corresponding to the user equipment is at least At two time, a bearer context corresponding to the bearer identifier is determined from the at least two bearer contexts corresponding to the user equipment.
  • the step of the receiving transmission device sending the data packet to be transmitted from the user equipment and the TMSI Specifically, the GTP-U data or the GTP-C data sent by the transmitting device is received, and the to-be-transmitted data packet, the TMSI, and the bearer are obtained from the GTP-U data or the GTP-C data.
  • the step of using the TMSI to mark the user equipment sent by the control plane node is specific To: obtain the TMSI from a create session request or modify a bearer request sent by a control plane node, and mark the user equipment by using the TMSI.
  • the TMSI is S-TMSI or P-TMSI
  • the control plane node is an MME
  • the control plane node is an SGSN
  • a sixth aspect of the embodiments of the present invention provides a data transmission method, including: a control plane node allocates a TMSI for a user equipment; selects the specific user plane node from a plurality of candidate user plane nodes according to the TMSI, or according to The selection result of the transmission device pre-negotiating selects the specific user plane node from a plurality of candidate user plane nodes; and sends the TMSI to the user plane node.
  • the TMSI includes node matching information
  • the specific user plane node is selected from a plurality of candidate user plane nodes according to the TMSI
  • the step is specifically: determining a user plane node corresponding to the node matching information in the TMSI according to the correspondence between the predetermined node matching information and the user plane node.
  • the selecting the one of the multiple candidate user plane nodes according to the TMSI Before the step of selecting the specific user plane node from the plurality of candidate user plane nodes according to the selection result pre-negotiated with the control plane node, the method further includes: configuring the node matching information and Corresponding relationship of the user plane node; the step of transmitting the TMSI to the user plane node further comprises: transmitting the correspondence between the node matching information and the user plane node to the transmission device.
  • the method further includes: negotiating with the transmission device The correspondence between the node matching information and the user plane node is configured.
  • the step of sending the TMSI to the user plane node Specifically, the TMSI is carried in the create session request or the modify bearer request, and the create session request or the modify bearer request is sent to the user plane node.
  • a seventh aspect of the embodiments of the present invention provides a transmission apparatus for data transmission, including a processor, a receiver, and a transmitter, where the receiver is configured to receive a TMSI and a data packet to be transmitted sent by a user equipment, where The TMSI is allocated to the user equipment by a control plane node, and the TMSI is sent by the control plane node to a specific user plane node; the processor is configured to select from a plurality of candidate user plane nodes according to the TMSI Selecting the specific user plane node from the plurality of candidate user plane nodes according to the selection result pre-negotiated with the control plane node; the transmitter is configured to use the data to be transmitted The packet and the TMSI are sent to the user plane node.
  • An eighth aspect of the embodiments of the present invention provides a user plane node, including a processor and a receiver, wherein the processor is configured to mark a user equipment by using a TMSI sent by a control plane node; and the receiver is configured to receive a a data packet to be transmitted of the user equipment and the TMSI; the processor is further configured to determine a bearer context corresponding to the user equipment according to the TMSI, and transmit the to-be-transmitted data packet according to the bearer context.
  • a ninth aspect of the embodiments of the present invention provides a control plane node, including a processor and a transmitter, where the processor is configured to allocate a TMSI for a user equipment, and select a candidate from a plurality of candidate user plane nodes according to the TMSI. Deriving the specific user plane node from a plurality of candidate user plane nodes according to a selection result previously negotiated with the transmission device; the transmitter is configured to send the TMSI to the user plane node.
  • the control plane node allocates TMSI to the user equipment, and the control plane node sends the TMSI to the specific user plane node.
  • the base station can be based on the TMSI or the control plane node.
  • the pre-negotiated selection result selects a specific user plane node, so that the user plane node can determine the bearer context corresponding to the user equipment according to the TMSI, thereby transmitting the data packet to be transmitted, because the base station does not need the user equipment to send the information about the user plane node.
  • FIG. 1 is a schematic structural diagram of a first embodiment of a transmission apparatus for data transmission according to the present invention
  • FIG. 2 is a schematic structural diagram of a first embodiment of a user plane node according to the present invention.
  • FIG. 3 is a schematic structural view of a first embodiment of a control plane node according to the present invention.
  • FIG. 4 is a schematic diagram of signaling interaction of an application scenario in which a control plane node sends a TMSI to a user equipment and a user plane node according to the present invention
  • FIG. 5 is a schematic diagram of signaling interaction of a control plane node of the present invention transmitting another application scenario of TMSI to a user equipment and a user plane node;
  • FIG. 6 is a schematic diagram of signaling interaction of an application scenario of a user equipment, a base station, and a user plane node according to the present invention
  • FIG. 7 is a schematic flow chart of a first embodiment of a data transmission method according to the present invention.
  • FIG. 8 is a schematic flow chart of a second embodiment of a data transmission method according to the present invention.
  • FIG. 9 is a schematic flow chart of a third embodiment of a data transmission method according to the present invention.
  • FIG. 10 is a schematic flowchart diagram of a fourth embodiment of a data transmission method according to the present invention.
  • FIG. 11 is a schematic structural diagram of a second embodiment of a transmission apparatus for data transmission according to the present invention.
  • FIG. 12 is a schematic structural diagram of a second embodiment of a user plane node according to the present invention.
  • Figure 13 is a block diagram showing the structure of a second embodiment of the control plane node of the present invention.
  • LTE Long Term Evolution
  • Long Term Evolution Long Term Evolution
  • EPC Evolved Universal Terrestrial Radio Access
  • Evolved Universal Land-Based Radio Access Network Evolved Universal Land-Based Radio Access Network
  • GSM Global System for Mobile
  • GERAN GSM EDGE Radio Access in communications, Global System for Mobile Communications
  • GSM/EDGE Radio Access Network GSM/EDGE Radio Access Network
  • UMTS Universal Mobile Telecommunications
  • UTRAN Universal Terrestrial Radio Access in System, Universal Mobile Telecommunications System
  • Universal Land-Based Radio Access Network Universal Land-Based Radio Access Network
  • the user equipment mentioned herein may be a wireless terminal or a wired terminal, and the wireless terminal may be a device that provides voice and/or data connectivity to the user, a handheld device with wireless connectivity, or a wireless modem. Other processing equipment.
  • the wireless terminal can communicate with one or more core networks via a wireless access network, which can be a mobile terminal, such as a mobile telephone (or "cellular" telephone) and a computer with a mobile terminal, for example, can be portable, Pocket, handheld, computer built-in or in-vehicle mobile devices that exchange language and/or data with a wireless access network.
  • a wireless terminal can also be called a system, a subscriber unit (Subscriber Unit), Subscriber Station, Mobile Station, Mobile, Remote Station (Remote) Station), access point (Access Point), remote terminal (Remote Terminal), access terminal (Access) Terminal), User Terminal, User Agent.
  • Subscriber Unit Subscriber Station
  • Mobile Station Mobile, Remote Station (Remote) Station
  • Access Point Access Point
  • Remote Terminal Remote Terminal
  • Access Terminal Access Terminal
  • User Agent User Agent
  • a base station e.g., an access point
  • the base station can be used to convert the received air frame to the IP packet as a router between the wireless terminal and the rest of the access network, wherein the remainder of the access network can include an Internet Protocol (IP) network.
  • IP Internet Protocol
  • the base station can also coordinate attribute management of the air interface. If necessary, the base station can also be understood as a base station controller in the 2G network (Base Station Controller, BSC), or Radio Network Controller in 3G Network (Radio Network Controller, RNC), or evolved Node B in an LTE network (evolved Node B, eNodeB).
  • the base station can be a base station in GSM or CDMA (BTS, Base Transceiver) Station), which may also be a base station (NodeB) in WCDMA, or an evolved base station in LTE (NodeB or eNB or e-NodeB, evolutional Node B), the invention is not limited.
  • GSM Global System for Mobile Communications
  • CDMA Code Division Multiple Access
  • NodeB base station
  • eNB evolved base station in LTE
  • e-NodeB evolutional Node B
  • FIG. 1 is a schematic structural diagram of a first embodiment of a transmission apparatus for data transmission according to the present invention.
  • the base station of this embodiment includes a receiving module 11, a selecting module 12, and a sending module 13.
  • the configuration module 14 may be further included, and of course, other modules may be further included.
  • the transmission device is a base station.
  • the receiving module 11 is configured to receive the TMSI (Temporary Mobile Group) sent by the user equipment. Identity, temporary mobile identity) and the data packet to be transmitted, wherein the TMSI is assigned to the user equipment by the control plane node, and the TMSI is sent by the control plane node to the specific user plane node.
  • TMSI Temporal Mobile Group
  • Identity temporary Mobile identity
  • the user equipment may send the TMSI and the to-be-transmitted data packet through an RRC connection establishment process.
  • the bearer Before the user equipment initiates the establishment of the RRC connection, the bearer has been established in the network, and the control plane node has already allocated the TMSI to the user equipment in the attaching process.
  • the TMSI sent by the control plane node to the specific user plane node and the user equipment is the same.
  • the selecting module 12 is configured to select a specific user plane node from the plurality of candidate user plane nodes according to the TMSI, or select a specific user plane node from the plurality of candidate user plane nodes according to the selection result pre-negotiated with the control plane node.
  • the transmission device has negotiated with the control plane node and obtains the selection result before receiving the TMSI sent by the user equipment. That is to say, the selection result points to a fixed user plane node, and the selection module 12 can only select the fixed user plane node according to the selection result.
  • the user plane node can be SAE-GW (System Architecture Evolution) Gateway, system architecture evolution gateway), specifically including S-GW and/or P-GW.
  • SAE-GW System Architecture Evolution
  • S-GW is responsible for saving the bearer context of the user equipment, such as the IP address and routing information of the user equipment, and performing functions such as lawful interception and packet data routing.
  • the P-GW is responsible for the user plane anchor function of the user equipment accessing the packet data network, and communicates with the packet data network through reference points such as SGi, and has the functions of packet routing and forwarding, policy enforcement, and charging.
  • the P-GW connects to the S-GW through an interface, and transmits signaling such as bearer establishment, modification, and deletion.
  • the sending module 13 is configured to send the data packet to be transmitted and the TMSI to the user plane node.
  • the receiving module 11 is further configured to receive a bearer identifier that is sent by the user equipment and used to identify the bearer context.
  • the sending module 13 is further configured to send the bearer identifier to the user plane node, where if the bearer context corresponding to the user equipment has only one, the user plane node determines the user equipment only through the TMSI, and then determines the corresponding If the bearer context corresponding to the user equipment is at least two, the user plane node further determines the bearer context of the user equipment corresponding to the bearer identifier according to the bearer identifier after determining the corresponding user equipment according to the TMSI.
  • GTP GTP Tunneling Protocol
  • GTP-C GTP Tunneling protocol for control
  • GTP-U GTP Tunneling protocol for user
  • the transmitting module 13 of the embodiment is specifically configured to encapsulate the to-be-transmitted data packet, the TMSI, and the bearer identifier in the GTP-U data or the GTP-C data, and the GTP-U data or the GTP- The C data is sent to the user plane node.
  • the TMSI may further include node matching information, where the selecting module 12 is specifically configured to select a user plane node corresponding to the node matching information in the TMSI according to the correspondence between the predetermined node matching information and the user plane node.
  • the corresponding relationship associates different node matching information with different user plane nodes, and the selecting module 12 can search for the same node matching information in the corresponding relationship with the node matching information in the TMSI, and then select the corresponding user plane node.
  • the node matching information may correspond to information indicating a user plane node, such as a name, a number, or an address of the user plane node.
  • the correspondence between the node matching information and the user plane node is configured by the control plane node, and the receiving module 11 is further configured to select, in the selection module 12, the node in the TMSI according to the correspondence between the predetermined node matching information and the user plane node.
  • the correspondence between the node matching information sent by the control plane node and the user plane node is received.
  • the correspondence between the node matching information and the user plane node is configured by the transmission device, that is, the configuration module 14 is configured to select, in the selection module 12, the node in the TMSI according to the correspondence between the predetermined node matching information and the user plane node.
  • the mapping relationship between the node matching information and the user plane node is negotiated with the control plane node, that is, after the configuration of the configuration module 14 and the control plane node is completed, the generated correspondence is shared and identical.
  • the configuration module 14 and the control plane node may pre-configure and save the correspondence before the user equipment sends the TMSI.
  • the node matching information is MMEC (MME). Code, mobility management entity identifier) or NRI (Network Resource Identifier, network resource identifier).
  • MME mobility management entity identifier
  • NRI Network Resource Identifier, network resource identifier
  • MMEC values correspond to different S-GWs. Assuming that the value of the MMEC in the TMSI sent by the control plane node to the user equipment is 5, after the receiving module 11 receives the TMSI sent by the user equipment, the selecting module 12 finds that the user plane node corresponding to the value of the MMEC is S. -GW B, thus selecting S-GW B, S-GW B has saved the TMSI with a value of 5 for the MMEC sent by the control plane node.
  • the value of the MMEC needs to be selected from the table 1, that is, whether the receiving module 11 receives the correspondence or the configuration module 14 configures the correspondence, the value of the MMEC can only be 1 to 12. Choose among these 12 numbers. If NRI is used instead of MMEC, the process is similar to the above process and will not be described here.
  • TMSI is S-TMSI (System Architecture Evolution-TMSI, System Architecture Evolution Temporary Mobile Identity) or P-TMSI (Packet-TMSI, Packet Temporary Mobile Identity), and if the TMSI is S-TMSI, the control plane node is the MME, or if the TMSI is P-TMSI, the control plane
  • the node is SGSN (Serving) GPRS Support Node, serving general packet radio service support node).
  • the transmitting device of the embodiment After receiving the TMSI and the data packet to be transmitted sent by the user equipment, the transmitting device of the embodiment selects a specific user plane node, and sends the TMSI to the user plane node, and the user plane node has received from the control plane node.
  • the TMSI so that the user plane node can determine the bearer context corresponding to the user equipment according to the TMSI and transmit the data packet to be transmitted, because the transmission device does not need the user equipment to send the relevant information of the user plane node, and can select the correct user plane node.
  • the transmission device of the embodiment can be used to avoid modification of the existing network deployment, and is convenient for popularization and application; at the same time, since the TMSI itself does not disclose network-related information, it does not bring Come to security risks.
  • FIG. 2 is a schematic structural diagram of a first embodiment of a user plane node according to the present invention.
  • the user plane node of this embodiment includes a marking module 21, a receiving module 22, and a transmission module 23, and of course may further include other modules.
  • the tagging module 21 is configured to tag the user equipment with the TMSI transmitted by the control plane node. After the TMSI marks the user equipment, the TMSI associates with the information of the saved user equipment on the user plane node.
  • the receiving module 22 is configured to receive a data packet to be transmitted and a TMSI from the user equipment and sent by the transmitting device.
  • the TMSI sent by the control plane node is the same as the TMSI sent by the user equipment.
  • the transmission module 23 is configured to determine a bearer context corresponding to the user equipment according to the TMSI, and transmit the to-be-transmitted data packet according to the bearer context.
  • the transmission module 23 searches for the user equipment marked by the TMSI according to the TMSI, thereby determining a bearer context corresponding to the user equipment.
  • the receiving module 22 is further configured to receive, by the transmitting device, a bearer identifier from the user equipment, used to identify the bearer context.
  • the transmission module 23 is further configured to determine, according to at least two bearer contexts corresponding to the user equipment, a bearer context corresponding to the bearer identifier from at least two bearer contexts corresponding to the user equipment. If the bearer context corresponding to the user equipment is only one, the transmission module 23 determines the bearer context corresponding to the user equipment only after determining the user equipment by using the TMSI.
  • the receiving module 22 of the embodiment is specifically configured to receive GTP-U data or GTP-C data sent by the transmitting device, in consideration of the fact that the user plane node generally adopts GTP for signaling interaction, and the GTP includes the GTP-C and the GTP-U.
  • the data packet to be transmitted, the TMSI, and the bearer identifier are obtained from the GTP-U data or the GTP-C data.
  • the marking module 21 is specifically configured to acquire the TMSI from the create session request or modify the bearer request sent by the control plane node, and mark the user equipment by using the TMSI.
  • the TMSI is S-TMSI or P-TMSI
  • the control plane node is the MME
  • the control plane node is the SGSN
  • FIG. 3 is a schematic structural diagram of a first embodiment of a control plane node according to the present invention.
  • the control plane node of this embodiment includes an allocation module 31, a selection module 32, and a sending module 33.
  • the configuration module 34 may be further included, and of course, other modules may be further included.
  • the allocation module 31 is configured to allocate TMSI to the user equipment.
  • the allocating module 31 may allocate a TMSI to the user equipment and establish a bearer in the user equipment attaching process.
  • the selecting module 32 is configured to select a specific user plane node from the plurality of candidate user plane nodes according to the TMSI allocated by the allocating module 31, or select a specific one from the plurality of candidate user plane nodes according to the selection result pre-negotiated with the transmitting device.
  • User face node is configured to select a specific user plane node from the plurality of candidate user plane nodes according to the TMSI allocated by the allocating module 31, or select a specific one from the plurality of candidate user plane nodes according to the selection result pre-negotiated with the transmitting device.
  • the control plane node has negotiated with the control plane node and obtains the selection result before receiving the TMSI sent by the user equipment. That is to say, the selection result points to a fixed user plane node, and the selection module 32 can only select the fixed user plane node according to the selection result.
  • the sending module 33 is configured to send the TMSI to the user plane node selected by the selecting module 32.
  • the TMSI includes node matching information
  • the selecting module 32 is specifically configured to determine a user plane node corresponding to the node matching information in the TMSI according to the correspondence between the predetermined node matching information and the user plane node.
  • the corresponding relationship associates different node matching information with different user plane nodes, and the selecting module 32 can search for the same node matching information in the corresponding relationship with the node matching information in the TMSI, and then select the corresponding user plane node.
  • the node matching information may correspond to information indicating a user plane node, such as a name, a number, or an address of the user plane node.
  • the configuration module 34 is configured to select a specific user plane node from the plurality of candidate user plane nodes according to the TMSI in the selection module 32, or from the plurality of candidate user plane nodes according to the selection result previously negotiated with the transmission device. Before selecting a specific user plane node, the correspondence between the node matching information and the user plane node is configured.
  • the sending module 33 is further configured to send the correspondence between the node matching information and the user plane node to the transmitting device.
  • the configuration module 34 is configured to select a specific user plane node from the plurality of candidate user plane nodes according to the TMSI in the selection module 32, or from the plurality of candidate user plane nodes according to the selection result pre-negotiated with the transmission device.
  • the correspondence between the node matching information and the user plane node is negotiated with the transmitting device. That is, after the configuration module 34 and the transmission device are configured, the generated correspondences are common and identical.
  • the control plane node and the transmission device may pre-configure and save the correspondence relationship before the control plane node allocates the TMSI to the user equipment.
  • the sending module 33 is specifically configured to carry the TMSI in the create session request or modify the bearer request, and send the create session request or the modify bearer request to the user plane node.
  • FIG. 4 it is a schematic diagram of signaling interaction of a control scenario in which a control plane node sends a TMSI to a user equipment and a user plane node.
  • the application scenario is directed to the process in which the user equipment initially accesses the network, and the signaling interaction process is as follows:
  • the user equipment sends an attach request to the control plane node.
  • the control plane node allocates TMSI to the user equipment according to the attach request.
  • the control plane node sends a create session request to the user plane node, and the create session request contains the TMSI.
  • the user plane node saves the TMSI and marks the user equipment with the TMSI.
  • the user plane node sends a create session response to the control plane node.
  • the control plane node sends an accept attachment response to the user equipment.
  • the TMSI is specifically S-TMSI. If the control plane node is the SGSN and the user plane node is the SAE-GW, then the TMSI is specifically P-TMSI.
  • FIG. 5 it is a schematic diagram of signaling interaction of a control plane node of the present invention to send another application scenario of TMSI to a user equipment and a user plane node.
  • the application scenario is for GUTI after the user equipment has accessed the network (Globally Unique Temporary UE Identity, the world's only temporary identifier) process, the signaling interaction process is as follows:
  • the control plane node sends a modify bearer request to the user plane node, and the modify bearer request includes the TMSI;
  • the control plane node sends a GUTI reassignment command to the user equipment.
  • TMSI is part of GUTI.
  • the user equipment sends a GUTI redistribution completion response to the control plane node.
  • the user plane node saves the TMSI and marks the user equipment with the TMSI.
  • the user plane node sends a modified bearer response to the control plane node.
  • the TMSI is specifically S-TMSI. If the control plane node is the SGSN and the user plane node is the SAE-GW, then the TMSI is specifically P-TMSI.
  • the TMSI corresponding to the bearer context of the user equipment is already saved on the user plane node before the user equipment uses the bearer transmission data packet.
  • FIG. 6 is a schematic diagram of signaling interaction of an application scenario of a user equipment, a transmission device, and a user plane node according to the present invention.
  • the transmission device is a base station, and the signaling interaction process is as follows:
  • the user equipment sends a random access sequence to the base station, and the base station sends a random access response to the user equipment.
  • the user equipment sends an RRC connection request to the base station, and the base station sends an RRC connection setup response to the user equipment.
  • the RRC connection request includes a TMSI allocated by the control plane node to the user equipment.
  • the user equipment sends an RRC connection setup complete response to the base station; wherein the RRC connection setup complete response includes the data packet to be transmitted by the user equipment, and optionally, the RRC connection setup complete response further includes a bearer identifier for identifying the bearer context.
  • the user equipment may separately send the to-be-transmitted data packet and the bearer identifier to the base station after the RRC connection setup is completed.
  • the base station selects a particular user plane node from a plurality of candidate user plane nodes according to the TMSI.
  • the base station transmits GTP-U data or GTP-C data to the user plane node, where the GTP-U data or the GTP-C data includes the data packet to be transmitted and the TMSI.
  • the GTP-U data or the GTP-C data includes a bearer identifier.
  • the user plane node determines a bearer context corresponding to the user equipment.
  • the bearer context corresponding to the user equipment is at least two, the user plane node further determines a bearer context corresponding to the bearer identifier from the at least two bearer contexts.
  • the user plane node transmits the data packet to be transmitted according to the bearer context.
  • the PGW and the external data network, such as the Internet, IMS (IP Multimedia)
  • IMS IP Multimedia
  • the SGi interface of Subsystem, IP Multimedia Subsystem, etc. connects the data packets to be transmitted to the external data network.
  • FIG. 7 is a schematic flowchart of a first embodiment of a data transmission method according to the present invention.
  • the data transmission method includes the following steps:
  • the transmitting device receives the TMSI and the to-be-transmitted data packet sent by the user equipment, where the TMSI is allocated to the user equipment by the control plane node, and the TMSI is sent by the control plane node to the specific user plane node.
  • the user equipment may send the TMSI and the to-be-transmitted data packet through an RRC connection establishment process.
  • the bearer Before the user equipment initiates the establishment of the RRC connection, the bearer has been established in the network, and the control plane node has already allocated the TMSI to the user equipment in the attaching process.
  • the TMSI sent by the control plane node to the specific user plane node and the user equipment is the same.
  • S72 Select a specific user plane node from the plurality of candidate user plane nodes according to the TMSI, or select a specific user plane node from the plurality of candidate user plane nodes according to the selection result pre-negotiated with the control plane node.
  • the transmission device has negotiated with the control plane node and obtains the selection result before receiving the TMSI sent by the user equipment. That is to say, the selection result points to a fixed user plane node, and only the fixed user plane node can be selected according to the selection result.
  • the TMSI saved by the user plane node and the TMSI assigned to the user equipment by the control plane node are the same TMSI.
  • the user plane node may be an SAE-GW, and specifically includes an S-GW or a P-GW.
  • the S-GW is responsible for saving the bearer context of the user equipment, such as the IP address and routing information of the user equipment, and performing functions such as lawful interception and packet data routing.
  • the P-GW is responsible for the user plane anchor function of the user equipment accessing the packet data network, and communicates with the packet data network through reference points such as SGi, and has the functions of packet routing and forwarding, policy enforcement, and charging.
  • the P-GW connects to the S-GW through an interface, and transmits signaling such as bearer establishment, modification, and deletion. There is a correspondence between the TMSI saved by the user plane node and the bearer context of the user equipment.
  • S73 Send the to-be-transmitted data packet and the TMSI to the user plane node.
  • FIG. 8 is a schematic flowchart of a second embodiment of a data transmission method according to the present invention. This embodiment is based on the data transmission method of the first embodiment, and the data transmission method includes the following steps:
  • the transmitting device receives the TMSI sent by the user equipment, the data packet to be transmitted, and the bearer identifier used to identify the bearer context, where the TMSI is allocated to the user equipment by the control plane node, and the TMSI is sent by the control plane node to the specific user plane node.
  • TMSI includes node matching information.
  • the node matching information may be an MMEC or an NRI.
  • the corresponding relationship between the node matching information and the user plane node is configured and sent by the control plane node, and the corresponding relationship associates different node matching information with different user plane nodes.
  • S83 Select a user plane node corresponding to the node matching information in the TMSI according to the correspondence between the node matching information and the user plane node.
  • the node matching information that is the same as the node matching information in the TMSI is searched for in the corresponding relationship, and then the corresponding user plane node is selected.
  • the node matching information may correspond to information indicating a user plane node, such as a name, a number, or an address of the user plane node.
  • S84 Send the to-be-transmitted data packet, the TMSI, and the bearer identifier to the user plane node.
  • the user plane node determines the bearer context corresponding to the user equipment only after determining the user equipment by using the TMSI, but if the number is at least two, the user plane node only If the bearer context of the user equipment is found, it is not determined which bearer context needs to be determined. Therefore, after determining the corresponding user equipment according to the TMSI, the user plane node further determines, according to the bearer identifier, the user equipment corresponding to the bearer identifier. Hosting context.
  • the correspondence between the node matching information and the user plane node may be configured by the transmission device, and the transmission device does not need to receive the correspondence from the control plane node, and S82 may be: negotiating the configuration with the control plane node.
  • the generated correspondences are common and identical.
  • step S82 may be performed before the user equipment sends the TMSI, that is, the transmission device and the control plane node pre-configure and save the corresponding relationship.
  • the TMSI is S-TMSI or P-TMSI
  • the control plane node is the MME
  • the control plane node is the SGSN
  • the node After receiving the TMSI and the data packet to be transmitted sent by the user equipment, selecting a specific user plane node, and transmitting the TMSI to the user plane node, and the user plane node has been controlled from the control plane.
  • the node receives the TMSI, so that the user plane node can determine the bearer context corresponding to the user equipment according to the TMSI, and thereby transmit the data packet to be transmitted. Since the user equipment is not required to send the relevant information of the user plane node, the correct user plane can be selected.
  • the node does not need to exchange signaling with the control plane node after receiving the TMSI, thereby effectively improving the transmission efficiency, solving the problem that the prior art is difficult to effectively improve the transmission efficiency, reducing the network burden, simplifying the signaling interaction process, and avoiding The existing network deployment is modified. Further, the data transmission method in this embodiment can be used to avoid modification of the existing network deployment, and is convenient for popularization and application. Meanwhile, since the TMSI itself does not disclose network-related information, even Displaying the transmission on the air interface does not pose a security risk.
  • FIG. 9 is a schematic flowchart of a third embodiment of a data transmission method according to the present invention.
  • the data transmission method includes the following steps:
  • the user plane node marks the bearer context of the user equipment by using the TMSI sent by the control plane node.
  • the TMSI associates with the information of the saved user equipment on the user plane node.
  • S92 Receive a data packet to be transmitted and a TMSI from the user equipment sent by the transmission device.
  • the TMSI sent by the control plane node is the same as the TMSI sent by the user equipment.
  • S93 Determine a bearer context corresponding to the user equipment according to the TMSI, and transmit the to-be-transmitted data packet according to the bearer context.
  • the user equipment marked by the TMSI may be found according to the TMSI, so as to determine a bearer context corresponding to the user equipment.
  • the S92 further includes: receiving, by the receiving device, a bearer identifier from the user equipment, used to identify the bearer context.
  • the step of determining the bearer context corresponding to the user equipment according to the TMSI includes: determining, when the bearer context corresponding to the user equipment is at least two, the bearer context corresponding to the bearer identifier from the at least two bearer contexts corresponding to the user equipment. If the bearer context corresponding to the user equipment is only one, the bearer context corresponding to the user equipment is determined after the user equipment is determined only by the TMSI.
  • the S92 is specifically: receiving the GTP-U data or the GTP-C data sent by the transmission device, and The data packet to be transmitted, the TMSI, and the bearer identifier are obtained from the GTP-U data or the GTP-C data.
  • the TMSI is S-TMSI or P-TMSI
  • the control plane node is the MME
  • the control plane node is the SGSN
  • FIG. 10 is a schematic flowchart of a fourth embodiment of a data transmission method according to the present invention.
  • the data transmission method includes the following steps:
  • the control plane node allocates a TMSI to the user equipment.
  • the TMSI can allocate and establish a bearer for the user equipment during the user equipment attach process.
  • S102 Select a specific user plane node from the plurality of candidate user plane nodes according to the TMSI, or select a specific user plane node from the plurality of candidate user plane nodes according to the selection result pre-negotiated with the transmission device.
  • the control plane node has negotiated with the control plane node and obtains the selection result before receiving the TMSI sent by the user equipment. That is to say, the selection result points to a fixed user plane node, and the selection module 32 can only select the fixed user plane node according to the selection result.
  • S103 Send the TMSI to the user plane node.
  • the TMSI includes node matching information
  • S102 is further specifically: determining a user plane node corresponding to the node matching information in the TMSI according to the correspondence between the predetermined node matching information and the user plane node.
  • the corresponding relationship associates different node matching information with different user plane nodes, and the user plane node can search for the same node matching information in the corresponding relationship with the node matching information in the TMSI, and then select the corresponding user plane node.
  • the node matching information may correspond to information indicating a user plane node, such as a name, a number, or an address of the user plane node.
  • the first manner, before S102, further includes: configuring a correspondence between the node matching information and the user plane node. Then, S103 further includes: transmitting the correspondence between the node matching information and the user plane node to the transmitting device.
  • the second method, before S102, further includes: negotiating, by the transmission device, the correspondence between the configuration node matching information and the user plane node, that is, after the control plane node and the transmission device are configured, the generated correspondence is shared and identical.
  • the control plane node and the transmission device may pre-configure and save the correspondence relationship before the control plane node allocates the TMSI to the user equipment.
  • S103 is specifically: carrying the TMSI in the create session request or modifying the bearer request, and sending the create session request or the modify bearer request to the user plane node.
  • FIG. 11 is a schematic structural diagram of a second embodiment of a transmission apparatus for data transmission according to the present invention.
  • the base station includes a processor 111, a memory 112, and a bus 113.
  • the processor 111, the memory 112 and the communication interface 114 are connected to one another via a bus 113.
  • the communication interface 114 is for connecting with a user equipment (not shown), a user plane node (not shown), and a control plane node (not shown).
  • Bus 113 can be a peripheral component interconnection standard (English: Peripheral Component Interconnect, abbreviation: PCI) bus or extended industry standard structure (English: Extended Industry Standard Architecture, abbreviation: EISA) bus, etc.
  • PCI Peripheral Component Interconnect
  • EISA Extended Industry Standard Architecture
  • the bus can be divided into an address bus, a data bus, a control bus, and the like. For ease of representation, only one thick line is shown in Figure 11, but it does not mean that there is only one bus or one type of bus.
  • the memory 112 is used to store programs.
  • the program can include program code, the program code including computer operating instructions.
  • Memory 112 may contain high speed random access memory (English: random-access Memory, abbreviation: RAM) memory, may also include non-volatile memory (English: non-volatile memory, abbreviated: NVM), such as at least one disk storage.
  • RAM random-access Memory
  • NVM non-volatile memory
  • the processor 111 may be a central processing unit (English: central processing) Unit, abbreviation: CPU).
  • the processor 111 executes the program stored in the memory 112, and is used to implement the data transmission method provided by the embodiment of the present invention, including:
  • TMSI Receiving a TMSI and a to-be-transmitted data packet sent by the user equipment, where the TMSI is allocated to the user equipment by the control plane node, and the TMSI is sent by the control plane node to the specific user plane node;
  • the data packet to be transmitted and the TMSI are sent to the user plane node.
  • the step of receiving the TMSI and the to-be-transmitted data packet sent by the user equipment further includes: receiving, by the user equipment, a bearer identifier that is used to identify the bearer context.
  • the step of transmitting the data packet to be transmitted and the TMSI to the user plane node further includes: sending the bearer identifier to the user plane node.
  • the TMSI includes node matching information
  • the step of selecting a specific user plane node from the plurality of candidate user plane nodes according to the TMSI is specifically: selecting, according to the correspondence between the predetermined node matching information and the user plane node, and the TMSI
  • the node matching information corresponds to the user plane node.
  • the method further includes: receiving the correspondence between the node matching information sent by the control plane node and the user plane node Relationship, or negotiate with the control plane node to configure the correspondence between the node matching information and the user plane node.
  • the node matching information may be an MMEC or an NRI.
  • the step of sending the to-be-transmitted data packet, the TMSI, and the bearer identifier to the user plane node is specifically: encapsulating the to-be-transmitted data packet, the TMSI, and the bearer identifier in the GTP-U data or the GTP-C data, and the GTP- U data or GTP-C data is sent to the user plane node.
  • the TMSI is S-TMSI or P-TMSI
  • the control plane node is the MME
  • the control plane node is the SGSN
  • FIG. 12 it is a schematic structural diagram of a second embodiment of a user plane node according to the present invention.
  • the user plane node includes a processor 121, a memory 122, and a bus 123. And communication interface (communication Interface) 124.
  • the processor 121, the memory 122 and the communication interface 124 are connected to one another via a bus 123.
  • the communication interface 124 is for connecting to a base station (not shown) and a control plane node (not shown).
  • Bus 123 can be a peripheral component interconnection standard (English: Peripheral Component Interconnect, abbreviation: PCI) bus or extended industry standard structure (English: Extended Industry Standard Architecture, abbreviation: EISA) bus, etc.
  • PCI Peripheral Component Interconnect
  • EISA Extended Industry Standard Architecture
  • the bus can be divided into an address bus, a data bus, a control bus, and the like. For ease of representation, only one thick line is shown in Figure 12, but it does not mean that there is only one bus or one type of bus.
  • the memory 122 is used to store programs.
  • the program can include program code, the program code including computer operating instructions.
  • Memory 122 may contain high speed random access memory (English: random-access Memory, abbreviation: RAM) memory, may also include non-volatile memory (English: non-volatile memory, abbreviated: NVM), such as at least one disk storage.
  • RAM random-access Memory
  • NVM non-volatile memory
  • the processor 121 may be a central processing unit (English: central processing) Unit, abbreviation: CPU).
  • the processor 121 executes the program stored in the memory 122, and is used to implement the data transmission method provided by the embodiment of the present invention, including:
  • the bearer context corresponding to the user equipment is determined according to the TMSI, and the data packet to be transmitted is transmitted according to the bearer context.
  • the step of receiving the data packet to be transmitted and the TMSI from the user equipment sent by the transmitting device further includes: receiving, by the transmitting device, a bearer identifier from the user equipment, used to identify the bearer context.
  • the step of determining the bearer context corresponding to the user equipment according to the TMSI further includes determining, according to the at least two bearer contexts corresponding to the user equipment, the bearer context corresponding to the bearer identifier from the at least two bearer contexts corresponding to the user equipment.
  • the step of receiving the data packet to be transmitted and the TMSI from the user equipment sent by the transmission device is specifically: receiving GTP-U data or GTP-C data sent by the transmission device, from GTP-U data or GTP-C
  • the data packet to be transmitted, the TMSI, and the bearer identifier are obtained in the data.
  • the step of marking the user equipment by using the TMSI sent by the control plane node is specifically: acquiring the TMSI from the create session request or the modify bearer request sent by the control plane node, and marking the user equipment by using the TMSI.
  • the TMSI is S-TMSI or P-TMSI
  • the control plane node is the MME
  • the control plane node is the SGSN
  • FIG. 13 is a schematic structural diagram of a second embodiment of the control plane node of the present invention.
  • the control plane node includes a processor 131, a memory 132, and a bus 133. And communication interface (communication Interface) 134.
  • the processor 131, the memory 132 and the communication interface 134 are connected to one another via a bus 133.
  • the communication interface 134 is configured to be connected to a user equipment (not shown), a base station (not shown), and a user plane node (not shown).
  • Bus 133 can be a peripheral component interconnect standard (English: Peripheral Component Interconnect, abbreviation: PCI) bus or extended industry standard structure (English: Extended Industry Standard Architecture, abbreviation: EISA) bus, etc.
  • PCI Peripheral Component Interconnect
  • EISA Extended Industry Standard Architecture
  • the bus can be divided into an address bus, a data bus, a control bus, and the like. For ease of representation, only one thick line is shown in FIG. 13, but it does not mean that there is only one bus or one type of bus.
  • the memory 132 is used to store programs.
  • the program can include program code, the program code including computer operating instructions.
  • Memory 132 may contain high speed random access memory (English: random-access Memory, abbreviation: RAM) memory, may also include non-volatile memory (English: non-volatile memory, abbreviated: NVM), such as at least one disk storage.
  • RAM random-access Memory
  • NVM non-volatile memory
  • the processor 131 may be a central processing unit (English: central processing) Unit, abbreviation: CPU).
  • the processor 131 executes the program stored in the memory 132, and is used to implement the data transmission method provided by the embodiment of the present invention, including:
  • the TMSI includes node matching information.
  • the step of selecting a specific user plane node from the plurality of candidate user plane nodes according to the TMSI is specifically: determining a user plane node corresponding to the node matching information in the TMSI according to the correspondence between the predetermined node matching information and the user plane node. .
  • the method further includes: configuring a correspondence between the node matching information and the user plane node.
  • the step of transmitting the TMSI to the user plane node further includes: transmitting the correspondence between the node matching information and the user plane node to the transmitting device.
  • the method further includes: cooperating with the transmission device to configure a correspondence between the node matching information and the user plane node.
  • the step of sending the TMSI to the user plane node is specifically: carrying the TMSI in the create session request or modifying the bearer request, and sending the create session request or the modify bearer request to the user plane node.
  • the disclosed system, apparatus, and method may be implemented in other manners.
  • the device embodiments described above are merely illustrative.
  • the division of the modules or units is only a logical function division.
  • there may be another division manner for example, multiple units or components may be used. Combinations can be integrated into another system, or some features can be ignored or not executed.
  • the mutual coupling or direct coupling or communication connection shown or discussed may be an indirect coupling or communication connection through some interface, device or unit, and may be in an electrical, mechanical or other form.
  • the units described as separate components may or may not be physically separated, and the components displayed as units may or may not be physical units, that is, may be located in one place, or may be distributed to multiple network units. Some or all of the units may be selected according to actual needs to achieve the purpose of the solution of the embodiment.
  • each functional unit in each embodiment of the present invention may be integrated into one processing unit, or each unit may exist physically separately, or two or more units may be integrated into one unit.
  • the above integrated unit can be implemented in the form of hardware or in the form of a software functional unit.
  • the integrated unit if implemented in the form of a software functional unit and sold or used as a standalone product, may be stored in a computer readable storage medium.
  • the technical solution of the present invention which is essential or contributes to the prior art, or all or part of the technical solution, may be embodied in the form of a software product stored in a storage medium.
  • a number of instructions are included to cause a computer device (which may be a personal computer, server, or network device, etc.) or a processor to perform all or part of the steps of the methods described in various embodiments of the present invention.
  • the foregoing storage medium includes: a U disk, a mobile hard disk, a read only memory (ROM, Read-Only) Memory, random access memory (RAM), disk or optical disk, and other media that can store program code.

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Abstract

本发明提供一种传输装置、用户面节点和控制面节点及数据传输方法。传输装置包括：接收模块（11），用于接收用户设备发送的临时移动标识（TMSI）和待传输数据包，其中，TMSI由控制面节点分配给用户设备，并且TMSI由控制面节点发送给特定的用户面节点；选择模块（12），用于根据TMSI从多个备选用户面节点中选择特定的用户面节点，或者根据与控制面节点预先协商的选择结果从多个备选用户面节点中选择特定的用户面节点；发送模块（13），用于将待传输数据包和TMSI发送给用户面节点。实施本发明能够解决现有技术难以有效提升传输效率并且存在安全风险的问题，可以减轻网络负担，简化信令交互过程。

Description

传输装置、用户面节点和控制面节点及数据传输方法
【技术领域】
本发明涉及通信技术领域，具体涉及一种数据传输方法，还涉及采用该数据连接传输方法的传输装置、用户面节点以及控制面节点。
【背景技术】
在EPC（Evolved Packet Core，演进的分组核心网）中，UE（User Equipment，用户设备）在进行数据业务时，需要事先在MME（Mobility Management Entity，移动性管理实体）建立承载，MME会保存该承载对应的承载上下文，然后UE向基站发起随机接入和RRC（Radio Resource Control，无线资源控制）连接建立，并经由RRC连接过程向基站发送业务请求，基站根据业务请求发起到MME的连接建立，然后MME根据UE的承载上下文在基站与S-GW (Serving Gateway，服务网关)或P-GW（PDN Gateway，分组数据网关）之间建立隧道，由此，UE发送给基站的数据包可以在隧道上传输，从而完成数据业务，
MME在UE进行数据业务的过程中扮演了重要的角色，承担了大部分的信令交互。然而，正因为如此，UE每主动发起一次数据包传输，需要基站和MME之间、MME与S-GW或P-GW之间进行多次信令交互，才能完成数据包的传输。如果数据包的数据量比较小，就造成信令面的开销远远大于实际传递的数据量，影响网络的效率，更进一步，如果UE频繁的发起小数据量的数据包传输，会造成网络中频繁的信令交互，引起网络拥塞。
为了改善上述问题，现有技术提出一种解决方案，提出UE仍然需要事先在MME建立承载，但是MME在承载建立过程中需要向UE发送标识信息，该标识信息包含与承载对应的S-GW或P-GW的地址以及相应的TEID（Tunnel endpoint identification，隧道端点标识）。这样，UE就可以经由RRC连接建立过程将数据包和标识信息发送给基站，基站可以解析标识信息得到S-GW或P-GW的地址以及相应的TEID，根据S-GW或P-GW的地址确定与承载对应的S-GW或P-GW，并按照TEID发送数据包到S-GW或P-GW，由此完成数据包传输。该方案无需MME参与UE主动发起的数据包传输，节省了一部分信令交互，可以提升网络传输效率。
然而，本发明的发明人在长期的研发中发现，虽然上述方案可以节省信令交互，但是在具体实施时难以掌握标识信息的长度，如果标识信息长度较长，而本身包含的数据量较小，则会降低传输效率，如果标识信息长度较短，又需要考虑如何让基站能够正确解析出S-GW或P-GW的地址和相应的TEID，所以，现有技术难以有效提升传输效率。另外，如果使用DNS（Domain Name Service，域名解析服务器），又需要增加额外的信令交互，从而增加网络负担。并且，进一步地，由于UE发送给基站的标识信息属于空中接口上的显示传输，所以该标识信息又会带来潜在的安全风险。
【发明内容】
有鉴于此，本发明实施例提供一种传输装置、用户面节点和控制面节点及数据传输方法，能够解决现有技术难以有效提升传输效率并且存在安全风险的问题。
本发明实施例第一方面提供一种用于数据传输的传输装置，包括：接收模块，用于接收用户设备发送的TMSI和待传输数据包，其中，所述TMSI由控制面节点分配给所述用户设备，并且所述TMSI由所述控制面节点发送给特定的用户面节点；选择模块，用于根据所述TMSI从多个备选用户面节点中选择所述特定的用户面节点，或者根据与所述控制面节点预先协商的选择结果从多个备选用户面节点中选择所述特定的用户面节点；发送模块，用于将所述待传输数据包和所述TMSI发送给所述用户面节点。
结合第一方面，在第一方面的第一种可能的实现方式中，所述接收模块还用于接收所述用户设备发送的用于标识承载上下文的承载标识；所述发送模块还用于将所述承载标识发送给所述用户面节点。
结合第一方面或第一方面的第一种可能的实现方式，在第一方面的第二种可能的实现方式中，所述TMSI包括节点匹配信息，所述选择模块具体用于根据预定的节点匹配信息与用户面节点的对应关系选择与所述TMSI中的节点匹配信息相对应的用户面节点。
结合第一方面的第二种可能的实现方式，在第一方面的第三种可能的实现方式中，所述接收模块还用于在所述选择模块根据预定的节点匹配信息与用户面节点的对应关系选择与所述TMSI中的节点匹配信息相对应的用户面节点之前，接收所述控制面节点发送的所述节点匹配信息与用户面节点的对应关系。
结合第一方面的第二种可能的实现方式，在第一方面的第四种可能的实现方式中，所述基站还包括配置模块，所述配置模块用于在所述选择模块根据预定的节点匹配信息与用户面节点的对应关系选择与所述TMSI中的节点匹配信息相对应的用户面节点之前，与所述控制面节点共同协商配置所述节点匹配信息与用户面节点的对应关系。
结合第一方面的第二种可能的实现方式，在第一方面的第五种可能的实现方式中，所述节点匹配信息为移动性管理实体标识码MMEC或者网络资源标识NRI。
结合第一方面的第一种可能的实现方式，在第一方面的第六种可能的实现方式中，所述发送模块具体用于在GTP-U数据或GTP-C数据中封装所述待传输数据包、所述TMSI和所述承载标识，并将所述GTP-U数据或所述GTP-C数据发送给所述用户面节点。
结合第一方面、第一方面的第一种至第六种任一种可能的实现方式，在第一方面的第七种可能的实现方式中，所述TMSI为S-TMSI或P-TMSI，并且如果所述TMSI为S-TMSI，所述控制面节点为MME，或者如果所述TMSI为P-TMSI，所述控制面节点为SGSN。
本发明实施例第二方面提供一种用户面节点，包括：标记模块，用于利用控制面节点发送的TMSI标记用户设备；接收模块，用于接收传输装置发送的来自所述用户设备的待传输数据包和所述TMSI；传输模块，用于根据所述TMSI确定与所述用户设备对应的承载上下文，并根据所述承载上下文传输所述待传输数据包。
结合第二方面，在第二方面的第一种可能的实现方式中，所述接收模块还用于接收所述传输装置发送的来自所述用户设备的用于标识承载上下文的承载标识；所述传输模块还用于在与所述用户设备对应的承载上下文为至少两个时，从与所述用户设备对应的所述至少两个承载上下文中确定与所述承载标识对应的承载上下文。
结合第二方面的第一种可能的实现方式，在第二方面的第二种可能的实现方式中，所述接收模块具体用于接收所述传输装置发送的GTP-U数据或GTP-C数据，并从所述GTP-U数据或所述GTP-C数据中获取所述待传输数据包、所述TMSI和所述承载标识。
结合第二方面、第二方面的第一种或第二种可能的实现方式，在第二方面的第三种可能的实现方式中，所述标记模块具体用于从控制面节点发送的创建会话请求或修改承载请求中获取所述TMSI，利用所述TMSI标记用户设备。
结合第二方面、第二方面的第一种至第三种任一种可能的实现方式，在第二方面的第四种可能的实现方式中，所述TMSI为S-TMSI或P-TMSI，并且如果所述TMSI为S-TMSI，所述控制面节点为MME，或者如果所述TMSI为P-TMSI，所述控制面节点为SGSN。
本发明实施例第三方面提供一种控制面节点，包括：分配模块，用于为用户设备分配TMSI；选择模块，用于根据所述TMSI从多个备选用户面节点中选择所述特定的用户面节点，或者根据与传输装置预先协商的选择结果从多个备选用户面节点中选择所述特定的用户面节点；发送模块，用于将所述TMSI发送给所述用户面节点。
结合第三方面，在第三方面的第一种可能的实现方式中，所述TMSI包括节点匹配信息，所述选择模块具体用于根据预定的节点匹配信息与用户面节点的对应关系确定与所述TMSI中的节点匹配信息相对应的用户面节点。
结合第三方面或第三方面的第一种可能的实现方式，在第三方面的第二种可能的实现方式中，所述控制面节点还包括配置模块，所述配置模块用于在所述选择模块根据所述TMSI从多个备选用户面节点中选择所述特定的用户面节点，或者根据与传输装置预先协商的选择结果从多个备选用户面节点中选择所述特定的用户面节点之前，配置所述节点匹配信息与用户面节点的对应关系；所述发送模块还用于将所述节点匹配信息与用户面节点的对应关系发送给所述传输装置。
结合第三方面或第三方面的第一种可能的实现方式、在第三方面的第三种可能的实现方式中，所述控制面节点还包括配置模块，所述配置模块用于在所述选择模块根据所述TMSI从多个备选用户面节点中选择所述特定的用户面节点，或者根据与传输装置预先协商的选择结果从多个备选用户面节点中选择所述特定的用户面节点之前，与所述传输装置共同协商配置所述节点匹配信息与用户面节点的对应关系。
结合第三方面、第三方面的第一种至第三种任一种可能的实现方式、在第三方面的第四种可能的实现方式中，所述发送模块具体用于在创建会话请求或修改承载请求中携带所述TMSI，并将所述创建会话请求或所述修改承载请求发送给所述用户面节点。
本发明实施例第四方面提供一种数据传输方法，包括：传输装置接收用户设备发送的TMSI和待传输数据包，其中，所述TMSI由控制面节点分配给所述用户设备，并且所述TMSI由所述控制面节点发送给特定的用户面节点；根据所述TMSI从多个备选用户面节点中选择所述特定的用户面节点，或者根据与所述控制面节点预先协商的选择结果从多个备选用户面节点中选择所述特定的用户面节点；将所述待传输数据包和所述TMSI发送给所述用户面节点。
结合第四方面，在第四方面的第一种可能的实现方式中，所述接收用户设备发送的TMSI和待传输数据包的步骤还包括：接收所述用户设备发送的用于标识承载上下文的承载标识；所述将所述待传输数据包和所述TMSI发送给所述用户面节点的步骤还包括：将所述承载标识发送给所述用户面节点。
结合第四方面或第四方面的第一种可能的实现方式，在第四方面的第二种可能的实现方式中，所述TMSI包括节点匹配信息，所述根据所述TMSI从多个备选用户面节点中选择所述特定的用户面节点的步骤具体为：根据预定的节点匹配信息与用户面节点的对应关系选择与所述TMSI中的节点匹配信息相对应的用户面节点。
结合第四方面的第二种可能的实现方式，在第四方面的第三种可能的实现方式中，所述根据预定的节点匹配信息与用户面节点的对应关系选择与所述TMSI中的节点匹配信息相对应的用户面节点的步骤之前，还包括：接收所述控制面节点发送的所述节点匹配信息与用户面节点的对应关系。
结合第四方面的第二种可能的实现方式，在第四方面的第四种可能的实现方式中，所述根据预定的节点匹配信息与用户面节点的对应关系选择与所述TMSI中的节点匹配信息相对应的用户面节点的步骤之前，还包括：与所述控制面节点共同协商配置所述节点匹配信息与用户面节点的对应关系。
结合第四方面的第二种可能的实现方式，在第四方面的第五种可能的实现方式中，所述节点匹配信息为移动性管理实体标识码MMEC或者网络资源标识NRI。
结合第四方面的第一种可能的实现方式，在第四方面的第六种可能的实现方式中，所述将所述待传输数据包、所述TMSI和所述承载标识发送给所述用户面节点的步骤具体为：在GTP-U数据或GTP-C数据中封装所述待传输数据包、所述TMSI和所述承载标识，并将所述GTP-U数据或所述GTP-C数据发送给所述用户面节点。
结合第四方面、第四方面的第一种至第六种可能的实现方式，在第四方面的第七种可能的实现方式中，所述TMSI为S-TMSI或P-TMSI，并且如果所述TMSI为S-TMSI，所述控制面节点为MME，或者如果所述TMSI为P-TMSI，所述控制面节点为SGSN。
本发明实施例第五方面提供一种数据传输方法，包括：用户面节点利用控制面节点发送的TMSI标记用户设备；接收传输装置发送的来自所述用户设备的待传输数据包和所述TMSI；根据所述TMSI确定与所述用户设备对应的承载上下文，并根据所述承载上下文传输所述待传输数据包。
结合第五方面，在第五方面的第一种可能的实现方式中，所述接收传输装置发送的来自所述用户设备的待传输数据包和所述TMSI的步骤还包括；接收所述传输装置发送的来自所述用户设备的用于标识承载上下文的承载标识；所述根据所述TMSI确定与所述用户设备对应的承载上下文的步骤还包括：在与所述用户设备对应的承载上下文为至少两个时，从与所述用户设备对应的所述至少两个承载上下文中确定与所述承载标识对应的承载上下文。
结合第五方面的第一种可能的实现方式，在第五方面的第二种可能的实现方式中，所述接收传输装置发送的来自所述用户设备的待传输数据包和所述TMSI的步骤具体为：接收所述传输装置发送的GTP-U数据或GTP-C数据，从所述GTP-U数据或所述GTP-C数据中获取所述待传输数据包、所述TMSI和所述承载标识。
结合第五方面、第五方面的第一种或第二种可能的实现方式，在第五方面的第三种可能的实现方式中，所述利用控制面节点发送的TMSI标记用户设备的步骤具体为：从控制面节点发送的创建会话请求或修改承载请求中获取所述TMSI，利用所述TMSI标记用户设备。
结合第五方面、第五方面的第一种至第三种任一种可能的实现方式，在第五方面的第四种可能的实现方式中，所述TMSI为S-TMSI或P-TMSI，并且如果所述TMSI为S-TMSI，所述控制面节点为MME，或者如果所述TMSI为P-TMSI，所述控制面节点为SGSN。
本发明实施例第六方面提供一种数据传输方法，包括：控制面节点为用户设备分配TMSI；根据所述TMSI从多个备选用户面节点中选择所述特定的用户面节点，或者根据与传输装置预先协商的选择结果从多个备选用户面节点中选择所述特定的用户面节点；将所述TMSI发送给所述用户面节点。
结合第六方面，在第六方面的第一种可能的实现方式中，所述TMSI包括节点匹配信息，所述根据所述TMSI从多个备选用户面节点中选择所述特定的用户面节点的步骤具体为：根据预定的节点匹配信息与用户面节点的对应关系确定与所述TMSI中的节点匹配信息相对应的用户面节点。
结合第六方面或第六方面的第一种可能的实现方式，在第六方面的第二种可能的实现方式中，在所述根据所述TMSI从多个备选用户面节点中选择所述特定的用户面节点，或者根据与所述控制面节点预先协商的选择结果从多个备选用户面节点中选择所述特定的用户面节点的步骤之前，还包括：配置所述节点匹配信息与用户面节点的对应关系；所述将所述TMSI发送给所述用户面节点的步骤还包括：将所述节点匹配信息与用户面节点的对应关系发送给所述传输装置。
结合第六方面或第六方面的第一种可能的实现方式，在第六方面的第三种可能的实现方式中，在所述根据所述TMSI从多个备选用户面节点中选择所述特定的用户面节点，或者根据与所述控制面节点预先协商的选择结果从多个备选用户面节点中选择所述特定的用户面节点的步骤之前，还包括：与所述传输装置共同协商配置所述节点匹配信息与用户面节点的对应关系。
结合第六方面、第六方面的第一种至第三种可能的实现方式，在第六方面的第四种可能的实现方式中，所述将所述TMSI发送给所述用户面节点的步骤具体为：在创建会话请求或修改承载请求中携带所述TMSI，并将所述创建会话请求或所述修改承载请求发送给所述用户面节点。
本发明实施例第七方面提供一种用于数据传输的传输装置，包括处理器、接收器和发送器，其中，所述接收器用于接收用户设备发送的TMSI和待传输数据包，其中，所述TMSI由控制面节点分配给所述用户设备，并且所述TMSI由所述控制面节点发送给特定的用户面节点；所述处理器用于根据所述TMSI从多个备选用户面节点中选择所述特定的用户面节点，或者根据与所述控制面节点预先协商的选择结果从多个备选用户面节点中选择所述特定的用户面节点；所述发送器用于将所述待传输数据包和所述TMSI发送给所述用户面节点。
本发明实施例第八方面提供一种用户面节点，包括处理器和接收器，其中，所述处理器用于利用控制面节点发送的TMSI标记用户设备；所述接收器用于接收传输装置发送的来自所述用户设备的待传输数据包和所述TMSI；所述处理器还用于根据所述TMSI确定与所述用户设备对应的承载上下文，并根据所述承载上下文传输所述待传输数据包。
本发明实施例第九方面提供一种控制面节点，包括处理器和发送器，其中，所述处理器用于为用户设备分配TMSI，以及根据所述TMSI从多个备选用户面节点中选择所述特定的用户面节点，或者根据与传输装置预先协商的选择结果从多个备选用户面节点中选择所述特定的用户面节点；所述发送器用于将所述TMSI发送给所述用户面节点。
本发明实施例通过控制面节点为用户设备分配TMSI，并且控制面节点将TMSI发给特定的用户面节点，用户设备发送TMSI和待传输数据包给基站时，基站能够根据TMSI或者与控制面节点预先协商的选择结果选择特定的用户面节点，从而该用户面节点可以根据TMSI确定与用户设备对应的承载上下文，由此传输待传输数据包，由于基站不需要用户设备发送用户面节点的相关信息就能够选择正确的用户面节点，从而有效提升传输效率，解决了现有技术难以有效提升传输效率的问题，可以减轻网络负担，简化信令交互过程，并且可以避免对现有的网络部署进行改动，便于推广应用；同时，由于本发明实施例无需在空中接口上传输用户面节点的相关信息，从而不会带来安全风险。
【附图说明】
图1是本发明用于数据传输的传输装置第一实施例的结构示意图；
图2是本发明用户面节点第一实施例的结构示意图；
图3是本发明控制面节点第一实施例的结构示意图；
图4是本发明控制面节点向用户设备和用户面节点发送TMSI一种应用场景的信令交互示意图；
图5是本发明控制面节点向用户设备和用户面节点发送TMSI另一种应用场景的信令交互示意图；
图6是本发明用户设备、基站和用户面节点一种应用场景的信令交互示意图；
图7是本发明数据传输方法第一实施例的流程示意图；
图8是本发明数据传输方法第二实施例的流程示意图；
图9是本发明数据传输方法第三实施例的流程示意图；
图10是本发明数据传输方法第四实施例的流程示意图；
图11是本发明用于数据传输的传输装置第二实施例的结构示意图；
图12是本发明用户面节点第二实施例的结构示意图；
图13是本发明控制面节点第二实施例的结构示意图。
【具体实施方式】
以下描述中，为了说明而不是为了限定，提出了诸如特定系统结构、接口、技术之类的具体细节，以便透彻理解本发明。然而，本领域的技术人员应当清楚，在没有这些具体细节的其它实施例中也可以实现本发明。在其它情况中，省略对众所周知的装置、电路以及方法的详细说明，以免不必要的细节妨碍本发明的描述。
本文中描述的技术可用于LTE（Long Term Evolution，长期演进）网络上的EPC架构或E-UTRAN（Evolved Universal Terrestrial Radio Access Network，演进的通用陆基无线接入网）架构、GSM（Global System for Mobile communications，全球移动通信系统）中的GERAN（GSM EDGE Radio Access Network，GSM/EDGE无线接入网）架构、UMTS（Universal Mobile Telecommunications System，通用移动通信系统）中的UTRAN（Universal Terrestrial Radio Access Network，通用陆基无线接入网）架构。
本文中提及的用户设备，可以是无线终端也可以是有线终端，无线终端可以是指向用户提供语音和/或数据连通性的设备，具有无线连接功能的手持式设备、或连接到无线调制解调器的其他处理设备。无线终端可以经无线接入网与一个或多个核心网进行通信，无线终端可以是移动终端，如移动电话（或称为“蜂窝”电话）和具有移动终端的计算机，例如，可以是便携式、袖珍式、手持式、计算机内置的或者车载的移动装置，它们与无线接入网交换语言和/或数据。例如，个人通信业务（PCS，Personal Communication Service）电话、无绳电话、会话发起协议（SIP）话机、无线本地环路（WLL，Wireless Local Loop）站、个人数字助理（PDA，Personal Digital Assistant）等设备。无线终端也可以称为系统、订户单元（Subscriber Unit）、订户站（Subscriber Station），移动站（Mobile Station）、移动台（Mobile）、远程站（Remote Station）、接入点（Access Point）、远程终端（Remote Terminal）、接入终端（Access Terminal）、用户终端（User Terminal）、用户代理（User Agent）。
本文中提及的基站（例如，接入点）可以是指接入网中在空中接口上通过一个或多个扇区与无线终端通信的设备。基站可用于将收到的空中帧与IP分组进行相互转换，作为无线终端与接入网的其余部分之间的路由器，其中接入网的其余部分可包括网际协议（IP）网络。基站还可协调对空中接口的属性管理。如果有必要，基站还可以理解为2G网络中的基站控制器（Base Station Controller，BSC），或3G网络中的无线网络控制器（Radio Network Controller，RNC），或LTE网络中的演进型节点B（evolved Node B, eNodeB）。例如，基站可以是GSM或CDMA中的基站（BTS，Base Transceiver Station），也可以是WCDMA中的基站（NodeB），还可以是LTE中的演进型基站（NodeB或eNB或e-NodeB，evolutional Node B），本发明并不限定。
另外，本文中的“和/或”，仅仅是一种描述关联对象的关联关系，表示可以存在三种关系，例如，A和/或B，可以表示：单独存在A，同时存在A和B，单独存在B这三种情况。
请参阅图1，是本发明用于数据传输的传输装置第一实施例的结构示意图。本实施例的基站包括接收模块11、选择模块12和发送模块13，可选地，还可包括配置模块14，当然进一步还可以包括其它模块。在本实施例中，传输装置是基站。
接收模块11用于接收用户设备发送的TMSI（Temporary Mobile Group Identity，临时移动标识）和待传输数据包，其中，TMSI由控制面节点分配给用户设备，并且TMSI由控制面节点发送给特定的用户面节点。
其中，用户设备可以通过RRC连接建立过程发送TMSI和待传输数据包。用户设备在发起RRC连接建立之前，在网络中已经建立承载，控制面节点已经在附着过程中将TMSI分配给用户设备。控制面节点发送给特定的用户面节点和用户设备的TMSI是相同的。
选择模块12用于根据TMSI从多个备选用户面节点中选择特定的用户面节点，或者根据与控制面节点预先协商的选择结果从多个备选用户面节点中选择特定的用户面节点。
其中，如果根据选择结果选择特定的用户面节点，则传输装置在接收用户设备发送的TMSI之前就已经与控制面节点协商并得到选择结果。也就是说，选择结果指向了固定的一个用户面节点，选择模块12根据选择结果只能选择该固定的用户面节点。
用户面节点可以是SAE-GW（System Architecture Evolution Gateway，系统架构演进网关），具体包括S-GW和/或P-GW。S-GW负责保存用户设备的承载上下文，如用户设备的IP地址和路由信息，并执行合法监听、分组数据路由等功能。P-GW负责用户设备接入分组数据网的用户面锚点功能，通过SGi等参考点与分组数据网进行通信，具有分组路由和转发、策略执行、计费等功能。P-GW通过接口与S-GW进行连接，传递承载建立、修改、删除等信令。
发送模块13用于将待传输数据包和TMSI发送给用户面节点。
在本实施例中，可选地，接收模块11还用于接收用户设备发送的用于标识承载上下文的承载标识。发送模块13还用于将承载标识发送给用户面节点，其中，如果与用户设备对应的承载上下文只有一个，那么用户面节点仅通过TMSI确定该用户设备后，也就确定了该用户设备对应的承载上下文；如果与用户设备对应的承载上下文为至少两个，那么用户面节点根据TMSI确定对应的用户设备后，还进一步根据承载标识确定该用户设备的与承载标识对应的承载上下文。
考虑到用户面节点普遍采用GTP（GRPS Tunneling protocol，通用分组无线业务隧道协议）进行信令交互，而GTP又包括GTP-C（GRPS Tunneling protocol for control plane，GPRS隧道协议控制面）和GTP-U（GRPS Tunneling protocol for user plane，GPRS隧道协议用户面），本实施例的发送模块13具体用于在GTP-U数据或GTP-C数据中封装待传输数据包、TMSI和承载标识，并将GTP-U数据或GTP-C数据发送给用户面节点。
可选地，TMSI还可以包括节点匹配信息，选择模块12具体用于根据预定的节点匹配信息与用户面节点的对应关系选择与TMSI中的节点匹配信息相对应的用户面节点。该对应关系将不同的节点匹配信息与不同的用户面节点关联对应，选择模块12可以在对应关系中查找与TMSI中的节点匹配信息相同的节点匹配信息，进而选择对应的用户面节点。在对应关系中，节点匹配信息可以与用户面节点的名称、编号或地址等用于表示用户面节点的信息对应。
下面将介绍节点匹配信息与用户面节点的对应关系的获取方式：
第一种方式，节点匹配信息与用户面节点的对应关系由控制面节点配置，接收模块11还用于在选择模块12根据预定的节点匹配信息与用户面节点的对应关系选择与TMSI中的节点匹配信息相对应的用户面节点之前，接收控制面节点发送的节点匹配信息与用户面节点的对应关系。
第二种方式，节点匹配信息与用户面节点的对应关系由传输装置参与配置，即配置模块14用于在选择模块12根据预定的节点匹配信息与用户面节点的对应关系选择与TMSI中的节点匹配信息相对应的用户面节点之前，与控制面节点共同协商配置节点匹配信息与用户面节点的对应关系，也就是说，配置模块14和控制面节点配置完成后，生成的对应关系是共有且相同的。可选地，配置模块14与控制面节点可以在用户设备发送TMSI之前就预先配置并保存对应关系。
在上述两种方式中，可选地，节点匹配信息为MMEC（MME Code，移动性管理实体标识码）或者NRI（Network Resource Identifier，网络资源标识）。本实施例以MMEC为例对节点匹配信息与用户面节点的对应关系进行说明，MMEC与用户面节点的对应关系如表1所示，表1中的A、B、C、D代表S-GW的名称或编号。
表1 节点匹配信息（MMEC）与用户面节点（S-GW）的对应关系
MMEC 的值 S-GW
1,2,3 S-GW A
4,5,6 S-GW B
7,8,9 S-GW C
10,11,12 S-GW D
表1中，不同的MMEC值对应不同的S-GW。假设控制面节点发送给用户设备的TMSI中的MMEC的值为5，那么接收模块11接收到用户设备发送的TMSI后，选择模块12会查找到与MMEC的值为5对应的用户面节点是S-GW B，从而选择S-GW B，S-GW B已保存有控制面节点发送的MMEC的值为5的TMSI。需要注意的是，控制面节点为用户设备分配TMSI时，MMEC的值需要从表1中选择，即不论接收模块11接收对应关系还是配置模块14配置对应关系，MMEC的值只能在1到12这12个数字中选择。如果采用NRI代替MMEC，其过程与上述过程类似，此处不再赘述。
在本实施例中，TMSI为S-TMSI（System Architecture Evolution-TMSI，系统架构演进临时移动标识）或P-TMSI（Packet-TMSI，分组临时移动标识），并且如果TMSI为S-TMSI，控制面节点为MME，或者如果TMSI为P-TMSI，控制面节点为SGSN（Serving GPRS Support Node，服务通用分组无线业务支持节点）。
本实施例的传输装置在接收到用户设备发送的TMSI和待传输数据包后，选择特定的用户面节点，并将TMSI发送给该用户面节点，而该用户面节点已经从控制面节点接收到该TMSI，从而用户面节点可以根据TMSI确定与用户设备对应的承载上下文并以此来传输待传输数据包，由于传输装置不需要用户设备发送用户面节点的相关信息就能够选择正确的用户面节点并在接收到TMSI后无需与控制面节点交互信令，从而有效提升传输效率，解决了现有技术难以有效提升传输效率的问题，可以减轻网络负担，简化信令交互过程，并且可以避免对现有的网络部署进行改动，进一步，应用本实施例的传输装置可以避免对现有的网络部署进行改动，便于推广应用；同时，由于TMSI本身并不会泄露与网络相关的信息，所以不会带来安全风险。
请参阅图2，是本发明用户面节点第一实施例的结构示意图。本实施例的用户面节点包括标记模块21、接收模块22和传输模块23，当然进一步还可以包括其它模块。
标记模块21用于利用控制面节点发送的TMSI标记用户设备。其中，TMSI标记用户设备后，该TMSI会与用户面节点上已保存的用户设备的信息建立对应关系。
接收模块22用于接收传输装置发送的来自用户设备的待传输数据包和TMSI。其中，控制面节点发送的TMSI和用户设备发送的TMSI是相同的。
传输模块23用于根据TMSI确定与用户设备对应的承载上下文，并根据承载上下文传输待传输数据包。其中，传输模块23根据TMSI查找到该TMSI所标记的用户设备，从而确定与用户设备对应的承载上下文。
可选地，接收模块22还用于接收传输装置发送的来自用户设备的用于标识承载上下文的承载标识。传输模块23还用于在与用户设备对应的承载上下文为至少两个时，从与用户设备对应的至少两个承载上下文中确定与承载标识对应的承载上下文。其中，如果与用户设备对应的承载上下文只有一个，传输模块23仅通过TMSI确定该用户设备后，也就确定了该用户设备对应的承载上下文。
考虑到用户面节点普遍采用GTP进行信令交互，而GTP又包括GTP-C和GTP-U，本实施例的接收模块22具体用于接收传输装置发送的GTP-U数据或GTP-C数据，并从GTP-U数据或GTP-C数据中获取待传输数据包、TMSI和承载标识。
在本实施例中，可选地，标记模块21具体用于从控制面节点发送的创建会话请求或修改承载请求中获取TMSI，利用TMSI标记用户设备。
在本实施例中，TMSI为S-TMSI或P-TMSI，并且如果TMSI为S-TMSI，控制面节点为MME，或者如果TMSI为P-TMSI，控制面节点为SGSN。
请参阅图3，是本发明控制面节点第一实施例的结构示意图。本实施例的控制面节点包括分配模块31、选择模块32和发送模块33，可选地，还可以包括配置模块34，当然进一步还可以包括其它模块。
分配模块31用于为用户设备分配TMSI。其中，分配模块31可以在用户设备附着过程中为用户设备分配TMSI并建立承载。
选择模块32用于根据分配模块31分配的TMSI从多个备选用户面节点中选择特定的用户面节点，或者根据与传输装置预先协商的选择结果从多个备选用户面节点中选择特定的用户面节点。
其中，如果根据选择结果选择特定的用户面节点，则控制面节点在接收用户设备发送的TMSI之前就已经与控制面节点协商并得到选择结果。也就是说，选择结果指向了固定的一个用户面节点，选择模块32根据选择结果只能选择该固定的用户面节点。
发送模块33用于将TMSI发送给选择模块32选择的用户面节点。
在本实施例中，可选地，TMSI包括节点匹配信息，选择模块32具体用于根据预定的节点匹配信息与用户面节点的对应关系确定与TMSI中的节点匹配信息相对应的用户面节点。该对应关系将不同的节点匹配信息与不同的用户面节点关联对应，选择模块32可以在对应关系中查找与TMSI中的节点匹配信息相同的节点匹配信息，进而选择对应的用户面节点。在对应关系中，节点匹配信息可以与用户面节点的名称、编号或地址等用于表示用户面节点的信息对应。
下面将介绍节点匹配信息与用户面节点的对应关系的配置方式：
第一种方式，配置模块34用于在选择模块32根据TMSI从多个备选用户面节点中选择特定的用户面节点，或者根据与传输装置预先协商的选择结果从多个备选用户面节点中选择特定的用户面节点之前，配置节点匹配信息与用户面节点的对应关系。发送模块33还用于将节点匹配信息与用户面节点的对应关系发送给传输装置。
第二种方式，配置模块34用于在选择模块32根据TMSI从多个备选用户面节点中选择特定的用户面节点，或者根据与传输装置预先协商的选择结果从多个备选用户面节点中选择特定的用户面节点之前，与传输装置共同协商配置节点匹配信息与用户面节点的对应关系，也就是说，配置模块34和传输装置配置完成后，生成的对应关系是共有且相同的。可选地，控制面节点与传输装置可以在控制面节点为用户设备分配TMSI之前就预先配置并保存对应关系。
可选地，发送模块33具体用于在创建会话请求或修改承载请求中携带TMSI，并将创建会话请求或修改承载请求发送给用户面节点。
请参阅图4，是本发明控制面节点向用户设备和用户面节点发送TMSI一种应用场景的信令交互示意图。该应用场景针对用户设备初始接入网络的流程，信令交互流程如下：
用户设备发送附着请求到控制面节点。
控制面节点根据附着请求为用户设备分配TMSI。
控制面节点发送创建会话请求到用户面节点，创建会话请求包含TMSI。
用户面节点保存TMSI，利用TMSI标记用户设备。
用户面节点发送创建会话响应到控制面节点。
控制面节点发送接受附着响应到用户设备。
在该应用场景中，如果控制面节点为MME，用户面节点为SAE-GW，那么TMSI具体为S-TMSI。如果控制面节点为SGSN，用户面节点为SAE-GW，那么TMSI具体为P-TMSI。
请参阅图5，是本发明控制面节点向用户设备和用户面节点发送TMSI另一种应用场景的信令交互示意图。该应用场景针对用户设备已经接入网络后进行GUTI（Globally Unique Temporary UE Identity，全球唯一临时标识）重分配的流程，信令交互流程如下：
控制面节点发送修改承载请求到用户面节点，修改承载请求包含TMSI；
控制面节点发送GUTI重分配命令到用户设备。其中，TMSI是GUTI的一部分。
用户设备发送GUTI重分配完成响应到控制面节点。
用户面节点保存TMSI，利用TMSI标记用户设备。
用户面节点发送修改承载响应到控制面节点。
在该应用场景中，如果控制面节点为MME，用户面节点为SAE-GW，那么TMSI具体为S-TMSI。如果控制面节点为SGSN，用户面节点为SAE-GW，那么TMSI具体为P-TMSI。
上述两种应用场景中，在用户设备使用承载传输数据包之前，用户面节点上就已经保存与用户设备的承载上下文对应的TMSI。
请参阅图6，是本发明用户设备、传输装置和用户面节点一种应用场景的信令交互示意图，其中，传输装置为基站，信令交互流程如下：
用户设备发送随机接入序列到基站，基站发送随机接入响应到用户设备。
用户设备发送RRC连接请求到基站，基站发送RRC连接建立响应到用户设备。其中，RRC连接请求包含控制面节点分配给用户设备的TMSI。
用户设备发送RRC连接建立完成响应到基站；其中，RRC连接建立完成响应包含用户设备的待传输数据包，可选地，RRC连接建立完成响应还包含用于标识承载上下文的承载标识。在其它实施例中，用户设备还可以在RRC连接建立完成后，单独发送待传输数据包和承载标识到基站。
基站根据TMSI从多个备选用户面节点中选择特定的用户面节点。
基站发送GTP-U数据或GTP-C数据到用户面节点，其中，GTP-U数据或GTP-C数据包含待传输数据包和TMSI。可选地，GTP-U数据或GTP-C数据包含承载标识。
用户面节点确定与用户设备对应的承载上下文，可选地，如果与用户设备对应的承载上下文为至少两个，用户面节点还从至少两个承载上下文中确定与承载标识相对应的承载上下文。
用户面节点根据承载上下文传输待传输数据包。例如用户面节点为PGW时，PGW和外面数据网络，如互联网、IMS（IP Multimedia Subsystem，IP多媒体子系统）等的SGi接口连接，从而将待传输数据包传输至外部数据网络。
请参阅图7，是本发明数据传输方法第一实施例的流程示意图。数据传输方法包括以下步骤：
S71：传输装置接收用户设备发送的TMSI和待传输数据包，其中，TMSI由控制面节点分配给用户设备，并且TMSI由控制面节点发送给特定的用户面节点。
其中，用户设备可以通过RRC连接建立过程发送TMSI和待传输数据包。用户设备在发起RRC连接建立之前，在网络中已经建立承载，控制面节点已经在附着过程中将TMSI分配给用户设备。控制面节点发送给特定的用户面节点和用户设备的TMSI是相同的。
S72：根据TMSI从多个备选用户面节点中选择特定的用户面节点，或者根据与控制面节点预先协商的选择结果从多个备选用户面节点中选择特定的用户面节点。
其中，如果根据选择结果选择特定的用户面节点，则传输装置在接收用户设备发送的TMSI之前就已经与控制面节点协商并得到选择结果。也就是说，选择结果指向了固定的一个用户面节点，根据选择结果只能选择该固定的用户面节点。
用户面节点保存的TMSI与控制面节点分配给用户设备的TMSI为同一个TMSI。用户面节点可以是SAE-GW，具体包括S-GW或P-GW。S-GW负责保存用户设备的承载上下文，如用户设备的IP地址和路由信息，并执行合法监听、分组数据路由等功能。P-GW负责用户设备接入分组数据网的用户面锚点功能，通过SGi等参考点与分组数据网进行通信，具有分组路由和转发、策略执行、计费等功能。P-GW通过接口与S-GW进行连接，传递承载建立、修改、删除等信令。用户面节点保存的TMSI与用户设备的承载上下文之间具有对应关系。
S73：将待传输数据包和TMSI发送给用户面节点。
请参阅图8，是本发明数据传输方法第二实施例的流程示意图。本实施例以第一实施例的数据传输方法为基础，该数据传输方法包括以下步骤：
S81：传输装置接收用户设备发送的TMSI、待传输数据包和用于标识承载上下文的承载标识，其中，TMSI由控制面节点分配给用户设备，并且TMSI由控制面节点发送给特定的用户面节点，TMSI包括节点匹配信息。
其中，节点匹配信息可以为MMEC或者NRI。
S82：接收控制面节点发送的节点匹配信息与用户面节点的对应关系。
其中，节点匹配信息与用户面节点的对应关系由控制面节点配置并发送，该对应关系将不同的节点匹配信息与不同的用户面节点关联对应。
S83：根据节点匹配信息与用户面节点的对应关系选择与TMSI中的节点匹配信息相对应的用户面节点。
其中，接收对应关系后，在对应关系中查找与TMSI中的节点匹配信息相同的节点匹配信息，进而选择对应的用户面节点。在对应关系中，节点匹配信息可以与用户面节点的名称、编号或地址等用于表示用户面节点的信息对应。
S84：将待传输数据包、TMSI和承载标识发送给用户面节点。
其中，如果与用户设备对应的承载上下文只有一个，那么用户面节点仅通过TMSI确定该用户设备后，也就确定了该用户设备对应的承载上下文，但是如果数量为至少两个，用户面节点只能找到用户设备对应哪些承载上下文，却并不能确定哪一个承载上下文是需要确定的，所以用户面节点根据TMSI确定对应的用户设备后，还进一步根据承载标识确定该用户设备的与承载标识对应的承载上下文。
在本实施例中，可选地，节点匹配信息与用户面节点的对应关系可以由传输装置配置，则传输装置无需从控制面节点接收对应关系，则S82可以为：与控制面节点共同协商配置节点匹配信息与用户面节点的对应关系，也就是说，传输装置和控制面节点配置完成后，生成的对应关系是共有且相同的。可选地，步骤S82可以在用户设备发送TMSI之前进行，即传输装置与控制面节点预先配置并保存对应关系。
在本实施例中，TMSI为S-TMSI或P-TMSI，并且如果TMSI为S-TMSI，控制面节点为MME，或者如果TMSI为P-TMSI，控制面节点为SGSN。
本实施例的数据传输方法中，在接收到用户设备发送的TMSI和待传输数据包后，选择特定的用户面节点，并将TMSI发送给该用户面节点，而该用户面节点已经从控制面节点接收到该TMSI，从而用户面节点可以根据TMSI确定与用户设备对应的承载上下文并以此来传输待传输数据包，由于不需要用户设备发送用户面节点的相关信息就能够选择正确的用户面节点并在接收到TMSI后无需与控制面节点交互信令，从而有效提升传输效率，解决了现有技术难以有效提升传输效率的问题，可以减轻网络负担，简化信令交互过程，并且可以避免对现有的网络部署进行改动，进一步，应用本实施例的数据传输方法可以避免对现有的网络部署进行改动，便于推广应用；同时，由于TMSI本身并不会泄露与网络相关的信息，所以即使在空中接口上显示传输也不会带来安全风险。
请参阅图9，是本发明数据传输方法第三实施例的流程示意图。数据传输方法包括以下步骤：
S91：用户面节点利用控制面节点发送的TMSI标记用户设备的承载上下文。
其中，TMSI标记用户设备后，该TMSI会与用户面节点上已保存的用户设备的信息建立对应关系。
S92：接收传输装置发送的来自用户设备的待传输数据包和TMSI。
其中，控制面节点发送的TMSI和用户设备发送的TMSI是相同的。
S93：根据TMSI确定与用户设备对应的承载上下文，并根据承载上下文传输待传输数据包。其中，根据TMSI可以查找到该TMSI所标记的用户设备，从而确定与用户设备对应的承载上下文。
可选地，S92还包括：接收传输装置发送的来自用户设备的用于标识承载上下文的承载标识。根据TMSI确定与用户设备对应的承载上下文的步骤包括：在与用户设备对应的承载上下文为至少两个时，从与用户设备对应的至少两个承载上下文中确定与承载标识对应的承载上下文。其中，如果与用户设备对应的承载上下文只有一个，则仅通过TMSI确定该用户设备后，也就确定了该用户设备对应的承载上下文。
考虑到用户面节点普遍采用GTP进行信令交互，而GTP又包括GTP-C和GTP-U，本实施例中，S92具体为：接收传输装置发送的GTP-U数据或GTP-C数据，并从GTP-U数据或GTP-C数据中获取待传输数据包、TMSI和承载标识。
在本实施例中，TMSI为S-TMSI或P-TMSI，并且如果TMSI为S-TMSI，控制面节点为MME，或者如果TMSI为P-TMSI，控制面节点为SGSN。
请参阅图10，是本发明数据传输方法第四实施例的流程示意图。数据传输方法包括以下步骤：
S101：控制面节点为用户设备分配TMSI。
其中，TMSI可以在用户设备附着过程中为用户设备分配并建立承载。
S102：根据TMSI从多个备选用户面节点中选择特定的用户面节点，或者根据与传输装置预先协商的选择结果从多个备选用户面节点中选择特定的用户面节点。
其中，如果根据选择结果选择特定的用户面节点，则控制面节点在接收用户设备发送的TMSI之前就已经与控制面节点协商并得到选择结果。也就是说，选择结果指向了固定的一个用户面节点，选择模块32根据选择结果只能选择该固定的用户面节点。
S103：将TMSI发送给用户面节点。
在本实施例中，可选地，TMSI包括节点匹配信息，则S102进一步具体为：根据预定的节点匹配信息与用户面节点的对应关系确定与TMSI中的节点匹配信息相对应的用户面节点。该对应关系将不同的节点匹配信息与不同的用户面节点关联对应，用户面节点可以在对应关系中查找与TMSI中的节点匹配信息相同的节点匹配信息，进而选择对应的用户面节点。在对应关系中，节点匹配信息可以与用户面节点的名称、编号或地址等用于表示用户面节点的信息对应。
下面将介绍节点匹配信息与用户面节点的对应关系的配置方式：
第一种方式，在S102之前，还包括：配置节点匹配信息与用户面节点的对应关系。则S103还包括：将节点匹配信息与用户面节点的对应关系发送给传输装置。
第二种方式，在S102之前，还包括：与传输装置共同协商配置节点匹配信息与用户面节点的对应关系，也就是说，控制面节点和传输装置配置完成后，生成的对应关系是共有且相同的。可选地，控制面节点与传输装置可以在控制面节点为用户设备分配TMSI之前就预先配置并保存对应关系。
可选地，S103具体为：在创建会话请求或修改承载请求中携带TMSI，并将创建会话请求或修改承载请求发送给用户面节点。
请参阅图11，是本发明用于数据传输的传输装置第二实施例的结构示意图。基站包括处理器（processer）111、存储器（memory）112、总线113 以及通信接口（communication interface）114。其中，处理器111，存储器112和通信接口114通过总线113相互连接。通信接口114用于与用户设备（图未示）、用户面节点（图未示）以及控制面节点（图未示）连接。
总线113可以是外设部件互连标准（英文：Peripheral Component Interconnect，缩写：PCI）总线或扩展工业标准结构（英文：Extended Industry Standard Architecture，缩写：EISA）总线等。所述总线可以分为地址总线、数据总线、控制总线等。为便于表示，图11中仅用一条粗线表示，但并不表示仅有一根总线或一种类型的总线。
存储器112用于存放程序。具体地，程序可以包括程序代码，所述程序代码包括计算机操作指令。存储器112可能包含高速随机存取存储器（英文：random-access memory，缩写：RAM）存储器，也可能还包括非易失性存储器（英文：non-volatile memory，缩写：NVM），例如至少一个磁盘存储器。
处理器111可能是一个中央处理器（英文：central processing unit，缩写：CPU）。
处理器111执行存储器112所存放的程序，用于实现本发明实施例提供的数据传输方法，包括：
接收用户设备发送的TMSI和待传输数据包，其中，TMSI由控制面节点分配给用户设备，并且TMSI由控制面节点发送给特定的用户面节点；
根据TMSI从多个备选用户面节点中选择特定的用户面节点，或者根据与控制面节点预先协商的选择结果从多个备选用户面节点中选择特定的用户面节点；
将待传输数据包和TMSI发送给用户面节点。
可选地，在本实施例中，接收用户设备发送的TMSI和待传输数据包的步骤还包括：接收用户设备发送的用于标识承载上下文的承载标识。将待传输数据包和TMSI发送给用户面节点的步骤还包括：将承载标识发送给用户面节点。
可选地，TMSI包括节点匹配信息，根据TMSI从多个备选用户面节点中选择特定的用户面节点的步骤具体为：根据预定的节点匹配信息与用户面节点的对应关系选择与TMSI中的节点匹配信息相对应的用户面节点。进一步，在根据预定的节点匹配信息与用户面节点的对应关系选择与TMSI中的节点匹配信息相对应的用户面节点之前，还包括：接收控制面节点发送的节点匹配信息与用户面节点的对应关系，或者与控制面节点共同协商配置节点匹配信息与用户面节点的对应关系。其中，节点匹配信息可以为MMEC或者NRI。
可选地，将待传输数据包、TMSI和承载标识发送给用户面节点的步骤具体为：在GTP-U数据或GTP-C数据中封装待传输数据包、TMSI和承载标识，并将GTP-U数据或GTP-C数据发送给用户面节点。
可选地，TMSI为S-TMSI或P-TMSI，并且如果TMSI为S-TMSI，控制面节点为MME，或者如果TMSI为P-TMSI，控制面节点为SGSN。
处理器111的具体实现过程请参照前述实施例的传输装置和数据传输方法，此处不再详述。
请参阅图12，是本发明用户面节点第二实施例的结构示意图。用户面节点包括处理器（processer）121、存储器（memory）122、总线123 以及通信接口（communication interface）124。其中，处理器121，存储器122和通信接口124通过总线123相互连接。通信接口124用于与基站（图未示）以及控制面节点（图未示）连接。
总线123可以是外设部件互连标准（英文：Peripheral Component Interconnect，缩写：PCI）总线或扩展工业标准结构（英文：Extended Industry Standard Architecture，缩写：EISA）总线等。所述总线可以分为地址总线、数据总线、控制总线等。为便于表示，图12中仅用一条粗线表示，但并不表示仅有一根总线或一种类型的总线。
存储器122用于存放程序。具体地，程序可以包括程序代码，所述程序代码包括计算机操作指令。存储器122可能包含高速随机存取存储器（英文：random-access memory，缩写：RAM）存储器，也可能还包括非易失性存储器（英文：non-volatile memory，缩写：NVM），例如至少一个磁盘存储器。
处理器121可能是一个中央处理器（英文：central processing unit，缩写：CPU）。
处理器121执行存储器122所存放的程序，用于实现本发明实施例提供的数据传输方法，包括：
用控制面节点发送的TMSI标记用户设备；
接收传输装置发送的来自用户设备的待传输数据包和TMSI；
根据TMSI确定与用户设备对应的承载上下文，并根据承载上下文传输待传输数据包。
可选地，接收传输装置发送的来自用户设备的待传输数据包和TMSI的步骤还包括；接收传输装置发送的来自用户设备的用于标识承载上下文的承载标识。根据TMSI确定与用户设备对应的承载上下文的步骤还包括：在与用户设备对应的承载上下文为至少两个时，从与用户设备对应的至少两个承载上下文中确定与承载标识对应的承载上下文。
进一步，可选地，接收传输装置发送的来自用户设备的待传输数据包和TMSI的步骤具体为：接收传输装置发送的GTP-U数据或GTP-C数据，从GTP-U数据或GTP-C数据中获取待传输数据包、TMSI和承载标识。
可选地，利用控制面节点发送的TMSI标记用户设备的步骤具体为：从控制面节点发送的创建会话请求或修改承载请求中获取TMSI，利用TMSI标记用户设备。
可选地，TMSI为S-TMSI或P-TMSI，并且如果TMSI为S-TMSI，控制面节点为MME，或者如果TMSI为P-TMSI，控制面节点为SGSN。
处理器121的具体实现过程请参照前述实施例的用户面节点和数据传输方法，此处不再详述。
请参阅图13，是本发明控制面节点第二实施例的结构示意图。控制面节点包括处理器（processer）131、存储器（memory）132、总线133 以及通信接口（communication interface）134。其中，处理器131，存储器132和通信接口134通过总线133相互连接。通信接口134用于与用户设备（图未示）、基站（图未示）以及用户面节点（图未示）连接。
总线133可以是外设部件互连标准（英文：Peripheral Component Interconnect，缩写：PCI）总线或扩展工业标准结构（英文：Extended Industry Standard Architecture，缩写：EISA）总线等。所述总线可以分为地址总线、数据总线、控制总线等。为便于表示，图13中仅用一条粗线表示，但并不表示仅有一根总线或一种类型的总线。
存储器132用于存放程序。具体地，程序可以包括程序代码，所述程序代码包括计算机操作指令。存储器132可能包含高速随机存取存储器（英文：random-access memory，缩写：RAM）存储器，也可能还包括非易失性存储器（英文：non-volatile memory，缩写：NVM），例如至少一个磁盘存储器。
处理器131可能是一个中央处理器（英文：central processing unit，缩写：CPU）。
处理器131执行存储器132所存放的程序，用于实现本发明实施例提供的数据传输方法，包括：
为用户设备分配TMSI，以及根据TMSI从多个备选用户面节点中选择特定的用户面节点，或者根据与传输装置预先协商的选择结果从多个备选用户面节点中选择特定的用户面节点；
将TMSI发送给用户面节点。
可选地，TMSI包括节点匹配信息。根据TMSI从多个备选用户面节点中选择特定的用户面节点的步骤具体为：根据预定的节点匹配信息与用户面节点的对应关系确定与TMSI中的节点匹配信息相对应的用户面节点。。
进一步，可选地，根据TMSI从多个备选用户面节点中选择特定的用户面节点，或者根据与控制面节点预先协商的选择结果从多个备选用户面节点中选择特定的用户面节点的步骤之前，还包括：配置节点匹配信息与用户面节点的对应关系。将TMSI发送给用户面节点的步骤还包括：将节点匹配信息与用户面节点的对应关系发送给传输装置。
可选地，根据TMSI从多个备选用户面节点中选择特定的用户面节点，或者根据与控制面节点预先协商的选择结果从多个备选用户面节点中选择特定的用户面节点的步骤之前，还包括：与传输装置共同协商配置节点匹配信息与用户面节点的对应关系。
可选地，将TMSI发送给用户面节点的步骤具体为：在创建会话请求或修改承载请求中携带TMSI，并将创建会话请求或修改承载请求发送给用户面节点。
处理器131的具体实现过程请参照前述实施例的控制面节点和数据传输方法，此处不再详述。
在本发明所提供的几个实施例中，应该理解到，所揭露的系统，装置和方法，可以通过其它的方式实现。例如，以上所描述的装置实施例仅仅是示意性的，例如，所述模块或单元的划分，仅仅为一种逻辑功能划分，实际实现时可以有另外的划分方式，例如多个单元或组件可以结合或者可以集成到另一个系统，或一些特征可以忽略，或不执行。另一点，所显示或讨论的相互之间的耦合或直接耦合或通信连接可以是通过一些接口，装置或单元的间接耦合或通信连接，可以是电性，机械或其它的形式。
所述作为分离部件说明的单元可以是或者也可以不是物理上分开的，作为单元显示的部件可以是或者也可以不是物理单元，即可以位于一个地方，或者也可以分布到多个网络单元上。可以根据实际的需要选择其中的部分或者全部单元来实现本实施例方案的目的。
另外，在本发明各个实施例中的各功能单元可以集成在一个处理单元中，也可以是各个单元单独物理存在，也可以两个或两个以上单元集成在一个单元中。上述集成的单元既可以采用硬件的形式实现，也可以采用软件功能单元的形式实现。
所述集成的单元如果以软件功能单元的形式实现并作为独立的产品销售或使用时，可以存储在一个计算机可读取存储介质中。基于这样的理解，本发明的技术方案本质上或者说对现有技术做出贡献的部分或者该技术方案的全部或部分可以以软件产品的形式体现出来，该计算机软件产品存储在一个存储介质中，包括若干指令用以使得一台计算机设备（可以是个人计算机，服务器，或者网络设备等）或处理器（processor）执行本发明各个实施例所述方法的全部或部分步骤。而前述的存储介质包括：U盘、移动硬盘、只读存储器（ROM，Read-Only Memory）、随机存取存储器（RAM，Random Access Memory）、磁碟或者光盘等各种可以存储程序代码的介质。
以上所述仅为本发明的实施例，并非因此限制本发明的专利范围，凡是利用本发明说明书及附图内容所作的等效结构或等效流程变换，或直接或间接运用在其他相关的技术领域，均同理包括在本发明的专利保护范围内。

Claims (39)

  1. 一种用于数据传输的传输装置，其特征在于，包括：
    接收模块，用于接收用户设备发送的临时移动标识TMSI和待传输数据包，其中，所述TMSI由控制面节点分配给所述用户设备，并且所述TMSI由所述控制面节点发送给特定的用户面节点；
    选择模块，用于根据所述TMSI从多个备选用户面节点中选择所述特定的用户面节点，或者根据与所述控制面节点预先协商的选择结果从多个备选用户面节点中选择所述特定的用户面节点；
    发送模块，用于将所述待传输数据包和所述TMSI发送给所述用户面节点。
  2. 根据权利要求1所述的传输装置，其特征在于，所述接收模块还用于接收所述用户设备发送的用于标识承载上下文的承载标识；
    所述发送模块还用于将所述承载标识发送给所述用户面节点。
  3. 根据权利要求1或2 所述的传输装置，其特征在于，所述TMSI包括节点匹配信息，所述选择模块具体用于根据预定的节点匹配信息与用户面节点的对应关系选择与所述TMSI中的节点匹配信息相对应的用户面节点。
  4. 根据权利要求3所述的传输装置，其特征在于，所述接收模块还用于在所述选择模块根据预定的节点匹配信息与用户面节点的对应关系选择与所述TMSI中的节点匹配信息相对应的用户面节点之前，接收所述控制面节点发送的所述节点匹配信息与用户面节点的对应关系。
  5. 根据权利要求3所述的传输装置，其特征在于，所述基站还包括配置模块，所述配置模块用于在所述选择模块根据预定的节点匹配信息与用户面节点的对应关系选择与所述TMSI中的节点匹配信息相对应的用户面节点之前，与所述控制面节点共同协商配置所述节点匹配信息与用户面节点的对应关系。
  6. 根据权利要求3所述的传输装置，其特征在于，所述节点匹配信息为移动性管理实体标识码MMEC或者网络资源标识NRI。
  7. 根据权利要求2所述的传输装置，其特征在于，所述发送模块具体用于在通用分组无线业务隧道协议用户面GTP-U数据或通用分组无线业务隧道协议控制面GTP-C数据中封装所述待传输数据包、所述TMSI和所述承载标识，并将所述GTP-U数据或所述GTP-C数据发送给所述用户面节点。
  8. 根据权利要求1至7任一项所述的传输装置，其特征在于，所述TMSI为系统架构演进临时移动标识S-TMSI或分组临时移动标识P-TMSI，并且如果所述TMSI为S-TMSI，所述控制面节点为MME，或者如果所述TMSI为P-TMSI，所述控制面节点为服务通用分组无线业务支持节点SGSN。
  9. 一种用户面节点，其特征在于，包括：
    标记模块，用于利用控制面节点发送的临时移动标识TMSI标记用户设备；
    接收模块，用于接收传输装置发送的来自所述用户设备的待传输数据包和所述TMSI；
    传输模块，用于根据所述TMSI确定与所述用户设备对应的承载上下文，并根据所述承载上下文传输所述待传输数据包。
  10. 根据权利要求9所述的用户面节点，其特征在于，所述接收模块还用于接收所述传输装置发送的来自所述用户设备的用于标识承载上下文的承载标识；
    所述传输模块还用于在与所述用户设备对应的承载上下文为至少两个时，从与所述用户设备对应的所述至少两个承载上下文中确定与所述承载标识对应的承载上下文。
  11. 根据权利要求10所述的用户面节点，其特征在于，所述接收模块具体用于接收所述传输装置发送的通用分组无线业务隧道协议用户面GTP-U数据或通用分组无线业务隧道协议控制面GTP-C数据，并从所述GTP-U数据或所述GTP-C数据中获取所述待传输数据包、所述TMSI和所述承载标识。
  12. 根据权利要求9至11任一项所述的用户面节点，其特征在于，所述标记模块具体用于从控制面节点发送的创建会话请求或修改承载请求中获取所述TMSI，利用所述TMSI标记用户设备。
  13. 根据权利要求10至12任一项所述的用户面节点，其特征在于，所述TMSI为系统架构演进临时移动标识S-TMSI或分组临时移动标识P-TMSI，并且如果所述TMSI为S-TMSI，所述控制面节点为MME，或者如果所述TMSI为P-TMSI，所述控制面节点为服务通用分组无线业务支持节点SGSN。
  14. 一种控制面节点，其特征在于，包括：
    分配模块，用于为用户设备分配临时移动标识TMSI；
    选择模块，用于根据所述TMSI从多个备选用户面节点中选择所述特定的用户面节点，或者根据与传输装置预先协商的选择结果从多个备选用户面节点中选择所述特定的用户面节点；
    发送模块，用于将所述TMSI发送给所述用户面节点。
  15. 根据权利要求14所述的控制面节点，其特征在于，所述TMSI包括节点匹配信息，所述选择模块具体用于根据预定的节点匹配信息与用户面节点的对应关系确定与所述TMSI中的节点匹配信息相对应的用户面节点。
  16. 根据权利要求14或15所述的控制面节点，其特征在于，所述控制面节点还包括配置模块，所述配置模块用于在所述选择模块根据所述TMSI从多个备选用户面节点中选择所述特定的用户面节点，或者根据与传输装置预先协商的选择结果从多个备选用户面节点中选择所述特定的用户面节点之前，配置所述节点匹配信息与用户面节点的对应关系；
    所述发送模块还用于将所述节点匹配信息与用户面节点的对应关系发送给所述传输装置。
  17. 根据权利要求14或15所述的控制面节点，其特征在于，所述控制面节点还包括配置模块，所述配置模块用于在所述选择模块根据所述TMSI从多个备选用户面节点中选择所述特定的用户面节点，或者根据与传输装置预先协商的选择结果从多个备选用户面节点中选择所述特定的用户面节点之前，与所述传输装置共同协商配置所述节点匹配信息与用户面节点的对应关系。
  18. 根据权利要求14至17任一项所述的控制面节点，其特征在于，所述发送模块具体用于在创建会话请求或修改承载请求中携带所述TMSI，并将所述创建会话请求或所述修改承载请求发送给所述用户面节点。
  19. 一种数据传输方法，其特征在于，包括：
    传输装置接收用户设备发送的临时移动标识TMSI和待传输数据包，其中，所述TMSI由控制面节点分配给所述用户设备，并且所述TMSI由所述控制面节点发送给特定的用户面节点；
    根据所述TMSI从多个备选用户面节点中选择所述特定的用户面节点，或者根据与所述控制面节点预先协商的选择结果从多个备选用户面节点中选择所述特定的用户面节点；
    将所述待传输数据包和所述TMSI发送给所述用户面节点。
  20. 根据权利要求19所述的数据传输方法，其特征在于，所述接收用户设备发送的TMSI和待传输数据包的步骤还包括：
    接收所述用户设备发送的用于标识承载上下文的承载标识；
    所述将所述待传输数据包和所述TMSI发送给所述用户面节点的步骤还包括：
    将所述承载标识发送给所述用户面节点。
  21. 根据权利要求19或20所述的数据传输方法，其特征在于，所述TMSI包括节点匹配信息，所述根据所述TMSI从多个备选用户面节点中选择所述特定的用户面节点的步骤具体为：
    根据预定的节点匹配信息与用户面节点的对应关系选择与所述TMSI中的节点匹配信息相对应的用户面节点。
  22. 根据权利要求21所述的数据传输方法，其特征在于，所述根据预定的节点匹配信息与用户面节点的对应关系选择与所述TMSI中的节点匹配信息相对应的用户面节点的步骤之前，还包括：
    接收所述控制面节点发送的所述节点匹配信息与用户面节点的对应关系。
  23. 根据权利要求21所述的数据传输方法，其特征在于，所述根据预定的节点匹配信息与用户面节点的对应关系选择与所述TMSI中的节点匹配信息相对应的用户面节点的步骤之前，还包括：
    与所述控制面节点共同协商配置所述节点匹配信息与用户面节点的对应关系。
  24. 根据权利要求21所述的数据传输方法，其特征在于，所述节点匹配信息为移动性管理实体标识码MMEC或者网络资源标识NRI。
  25. 根据权利要求20所述的数据传输方法，其特征在于，所述将所述待传输数据包、所述TMSI和所述承载标识发送给所述用户面节点的步骤具体为：
    在通用分组无线业务隧道协议用户面GTP-U数据或通用分组无线业务隧道协议控制面GTP-C数据中封装所述待传输数据包、所述TMSI和所述承载标识，并将所述GTP-U数据或所述GTP-C数据发送给所述用户面节点。
  26. 根据权利要求19至25任一项所述的数据传输方法，其特征在于，所述TMSI为系统架构演进临时移动标识S-TMSI或分组临时移动标识P-TMSI，并且如果所述TMSI为S-TMSI，所述控制面节点为MME，或者如果所述TMSI为P-TMSI，所述控制面节点为服务通用分组无线业务支持节点SGSN。
  27. 一种数据传输方法，其特征在于，包括：
    用户面节点利用控制面节点发送的临时移动标识TMSI标记用户设备；
    接收传输装置发送的来自所述用户设备的待传输数据包和所述TMSI；
    根据所述TMSI确定与所述用户设备对应的承载上下文，并根据所述承载上下文传输所述待传输数据包。
  28. 根据权利要求27所述的数据传输方法，其特征在于，所述接收传输装置发送的来自所述用户设备的待传输数据包和所述TMSI的步骤还包括；
    接收所述传输装置发送的来自所述用户设备的用于标识承载上下文的承载标识；
    所述根据所述TMSI确定与所述用户设备对应的承载上下文的步骤还包括：
    在与所述用户设备对应的承载上下文为至少两个时，从与所述用户设备对应的所述至少两个承载上下文中确定与所述承载标识对应的承载上下文。
  29. 根据权利要求28所述的数据传输方法，其特征在于，所述接收传输装置发送的来自所述用户设备的待传输数据包和所述TMSI的步骤具体为：
    接收所述传输装置发送的通用分组无线业务隧道协议用户面GTP-U数据或通用分组无线业务隧道协议控制面GTP-C数据，从所述GTP-U数据或所述GTP-C数据中获取所述待传输数据包、所述TMSI和所述承载标识。
  30. 根据权利要求27至29任一项所述的数据传输方法，其特征在于，所述利用控制面节点发送的TMSI标记用户设备的步骤具体为：
    从控制面节点发送的创建会话请求或修改承载请求中获取所述TMSI，利用所述TMSI标记用户设备。
  31. 根据权利要求27至30任一项所述的数据传输方法，其特征在于，所述TMSI为系统架构演进临时移动标识S-TMSI或分组临时移动标识P-TMSI，并且如果所述TMSI为S-TMSI，所述控制面节点为MME，或者如果所述TMSI为P-TMSI，所述控制面节点为服务通用分组无线业务支持节点SGSN。
  32. 一种数据传输方法，其特征在于，包括：
    控制面节点为用户设备分配临时移动标识TMSI；
    根据所述TMSI从多个备选用户面节点中选择特定的用户面节点，或者根据与传输装置预先协商的选择结果从多个备选用户面节点中选择特定的用户面节点；
    将所述TMSI发送给所述用户面节点。
  33. 根据权利要求32所述的数据传输方法，其特征在于，所述TMSI包括节点匹配信息，所述根据所述TMSI从多个备选用户面节点中选择所述特定的用户面节点的步骤具体为：
    根据预定的节点匹配信息与用户面节点的对应关系确定与所述TMSI中的节点匹配信息相对应的用户面节点。
  34. 根据权利要求32或33所述的数据传输方法，其特征在于，在所述根据所述TMSI从多个备选用户面节点中选择所述特定的用户面节点，或者根据与所述控制面节点预先协商的选择结果从多个备选用户面节点中选择所述特定的用户面节点的步骤之前，还包括：
    配置所述节点匹配信息与用户面节点的对应关系；
    所述将所述TMSI发送给所述用户面节点的步骤还包括：
    将所述节点匹配信息与用户面节点的对应关系发送给所述传输装置。
  35. 根据权利要求32或33所述的数据传输方法，其特征在于，在所述根据所述TMSI从多个备选用户面节点中选择所述特定的用户面节点，或者根据与所述控制面节点预先协商的选择结果从多个备选用户面节点中选择所述特定的用户面节点的步骤之前，还包括：
    与所述传输装置共同协商配置所述节点匹配信息与用户面节点的对应关系。
  36. 根据权利要求32至35任一项所述的数据传输方法，其特征在于，所述将所述TMSI发送给所述用户面节点的步骤具体为：
    在创建会话请求或修改承载请求中携带所述TMSI，并将所述创建会话请求或所述修改承载请求发送给所述用户面节点。
  37. 一种用于数据传输的传输装置，其特征在于，包括处理器、接收器和发送器，其中，
    所述接收器用于接收用户设备发送的临时移动标识TMSI和待传输数据包，其中，所述TMSI由控制面节点分配给所述用户设备，并且所述TMSI由所述控制面节点发送给特定的用户面节点；
    所述处理器用于根据所述TMSI从多个备选用户面节点中选择所述特定的用户面节点，或者根据与所述控制面节点预先协商的选择结果从多个备选用户面节点中选择所述特定的用户面节点；
    所述发送器用于将所述待传输数据包和所述TMSI发送给所述用户面节点。
  38. 一种用户面节点，其特征在于，包括处理器和接收器，其中，
    所述处理器用于利用控制面节点发送的临时移动标识TMSI标记用户设备；
    所述接收器用于接收传输装置发送的来自所述用户设备的待传输数据包和所述TMSI；
    所述处理器还用于根据所述TMSI确定与所述用户设备对应的承载上下文，并根据所述承载上下文传输所述待传输数据包。
  39. 一种控制面节点，其特征在于，包括处理器和发送器，其中，
    所述处理器用于为用户设备分配临时移动标识TMSI，以及根据所述TMSI从多个备选用户面节点中选择所述特定的用户面节点，或者根据与传输装置预先协商的选择结果从多个备选用户面节点中选择所述特定的用户面节点；
    所述发送器用于将所述TMSI发送给所述用户面节点。
PCT/CN2013/090884 2013-12-30 2013-12-30 传输装置、用户面节点和控制面节点及数据传输方法 WO2015100537A1 (zh)

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