CN106900081B

CN106900081B - The method and device of the user face data tunnel transmission of access network node granularity

Info

Publication number: CN106900081B
Application number: CN201610710608.2A
Authority: CN
Inventors: 王丹; 孙滔; 蔡慧; 陆璐
Original assignee: China Mobile Communications Group Co Ltd; China Mobile Communications Co Ltd
Current assignee: China Mobile Communications Group Co Ltd; China Mobile Communications Co Ltd
Priority date: 2016-08-23
Filing date: 2016-08-23
Publication date: 2019-06-25
Anticipated expiration: 2036-08-23
Also published as: CN106900081A

Abstract

The embodiment of the invention provides a kind of method and devices of the cellular network User face data tunnel transmission of access network node granularity, this method comprises: access network node judges whether the aggregating tunnel for needing to use access network node granularity for terminal；If desired the aggregating tunnel of the access network node granularity is used for the terminal, after then the session connection between core network control surface function and core network user face function is established, the access network node receives the terminal iidentification for distinguishing the terminal connection from core network control surface function；The access network node establishes the mapping relations of downstream transmission according to the information in the downlink transfer channel of the terminal iidentification, the tunnel information of aggregating tunnel and the access network node terminaloriented；The terminal iidentification is sent to the terminal by the access network node, realizes that different UE can be carried out data transmission based on the tunnel between the same AN Node node and core network user face function.

Description

The method and device of the user face data tunnel transmission of access network node granularity

Technical field

The present invention relates to field of communication technology more particularly to a kind of cellular network User face data tunnels of access network node granularity The method and device of road transmission.

Background technique

In existing EPC (Evolved Packet Core) framework, the granularity in tunnel is carrying.Adhere to network in UE (terminal), When establishing PDU (Packet Data Unit, Packet Data Unit) session connection, eNodeB (base station), SGW (Serving GateWay, gateway) and PGW (PDN GateWay, PDN Gateway) can for each carrying distribution one TEID (Tunnel Endpoint Identifier, Tunnel End Point Identifier), TEID can uniquely identify a tunnel.Such as from eNB to SGW The TEID of SGW distribution can be added in upstream data packet in GTP encapsulation header, as the uplink tunnel mark from eNB to SGW.

Using the purpose in GTP (GPRS Tunnelling Protocol, GPRS Tunnel Protocol) tunnel it is main there are three: (1) QoS (Quality of Service, the service quality) control based on carrying granularity is realized；(2) mobility of UE is supported； (3) it supports correct IP transmission channel inside mobile network, that is, establishes from eNodeB to SGW again to the correct line number up and down of PGW According to transmission channel.Magnanimity IoT (Internet of Things, Internet of Things) is if equipment uses the carrying granularity in EPC system Tunneling mechanism, then network needs to safeguard a large amount of upstream and downstream user face tunnel identification information.

Summary of the invention

In view of above-mentioned technical problem, the user face data tunnel that the embodiment of the present invention provides a kind of access network node granularity is passed Defeated method and device realizes that different UE can be based on the tunnel between the same AN Node node and core network user face function Carry out data transmission.

One aspect according to an embodiment of the present invention provides a kind of cellular network User face data of access network node granularity The method of tunnel transmission, comprising:

Access network node judges whether the aggregating tunnel for needing to use access network node granularity for terminal；

If desired the aggregating tunnel that the access network node granularity is used for the terminal, then in core network control surface function After session connection between the function of core network user face is established, the access network node receives use from core network control surface function In the terminal iidentification for distinguishing the terminal connection；

The access network node according to the terminal iidentification, the tunnel information of aggregating tunnel and the access network node towards The information in the downlink transfer channel of terminal, establishes the mapping relations of downstream transmission；

The terminal iidentification is sent to the terminal by the access network node.

Optionally, access network node judges whether the aggregating tunnel for needing to use access network node granularity for terminal, comprising:

The access network node receives the tunnel that terminal is sent and selects auxiliary information；

The access network node selects auxiliary information to judge whether to need to use access net section for terminal according to the tunnel The aggregating tunnel of point granularity.

Optionally, the access network node receives the terminal iidentification of the terminal from the core network control surface function, Include:

The access network node aggregating tunnel opposite end core net that the access network node is sent to core network control surface function is used The mark of family face function；

The access network node receives the IP address for the terminal that the core network control surface function is sent；

Wherein, the IP address of the terminal is by core network control surface function according to the access network node aggregating tunnel pair What end core network users face function determined；

Or

The access network node sends the mark of terminal type and access network node, Huo Zhesuo to core network control surface function It states access network node and sends terminal type to core network control surface function；

Wherein, the IP address of the terminal is by core network control surface function according to the access network node aggregating tunnel pair What end core network users face function determined.

Optionally, the terminal iidentification be one for indicate terminal connection label information, the label information be by Core network control surface function is terminal distribution, establishes request message by user face by core network control surface function and believes the label Breath passes to core network user face function.

Optionally, if upstream data packet is transmitted to the access network node, the method also includes:

If the access network node only supports aggregating tunnel mechanism, the access network node is by upstream data packet and accesses The aggregating tunnel of net node granularity is mapped, and upstream data is forwarded a packet to corresponding core network user face function；Or

If the access network node supports aggregating tunnel mechanism and other tunneling mechanisms, the access network node will be wireless Transmission channel mark is mapped with Tunnel Identifier, and the upstream data is forwarded a packet to corresponding core network user face function.

Optionally, if downlink data packet is transmitted to the access network node by the aggregating tunnel of access network node granularity When, the method also includes:

The access network node identifies the terminal iidentification in the downlink data packet；

The access network node is according to the mapping relations of the terminal iidentification and downlink transfer channel, by the downlink data Packet is transmitted to the terminal.

Optionally, if the terminal iidentification is empty IP address, the method also includes:

The access network node is by identifying that dhcp message establishes the IP address of terminal and the mapping pass in downlink transfer channel System.

Optionally, the access network node is by identifying that dhcp message establishes IP address and the downlink transfer channel of terminal Mapping relations, comprising:

The MAC Address of terminal and the mapping in downlink transfer channel are closed in the access network node identification DHCP request message System, wherein the DHCP request message is that after a connection setup, what terminal was sent to Dynamic Host Configuration Protocol server is used to request allocative efficiency IP address message；

The access network node identifies dhcp response message, obtains the mapping of the IP address of terminal and the MAC Address of terminal Relationship；

The access network node is according to the MAC Address of terminal and the mapping relations in downlink transfer channel and the IP of terminal The mapping relations of the MAC Address of address and terminal establish the IP address of terminal and the mapping relations in downlink transfer channel.

The second aspect according to an embodiment of the present invention additionally provides a kind of cellular network User face of access network node granularity The method of tunnel packets, comprising:

Determining that the determination of core network control surface function is given when needing to use the aggregating tunnel of access network node granularity for terminal The terminal iidentification of terminal distribution；

The core network control surface function sends the terminal iidentification of the terminal to access network node, so that access network node According to the information in the downlink transfer channel of terminal iidentification, tunnel information and access network node terminaloriented, downstream transmission is established Mapping relations.

Optionally, core network control surface function is determined to the terminal iidentification of terminal distribution, comprising:

The core network control surface function according to the mark of access network node aggregating tunnel opposite end core network user face function, Determine corresponding core network user function；

The core network control surface function is the end from IP address pond corresponding to the function of the core network user face End distribution IP address；

Or

The core network control surface function determines that corresponding core net is used according to the mark of terminal type and access network node Family face function；

The core network control surface function judges whether the connection for needing to be used to indicate terminal for the terminal distribution one Label information；

If so, the core network control surface function is terminal distribution label information, and establishing in message in user face will The label information is sent to core network user face function, and the label information is sent to described connect by core network control surface function Network access node.

In terms of third according to an embodiment of the present invention, a kind of cellular network User face of access network node granularity is additionally provided The method of tunnel packets, comprising:

Tunnel selection auxiliary information is provided to core network control surface function in terminal or selection auxiliary information in tunnel is not provided When, core network control surface function judges whether the aggregating tunnel for needing to use access network node granularity for terminal；

If desired the aggregating tunnel of the access network node granularity is used for the terminal, then the core network control surface function It can determine that the terminal iidentification for distinguishing the terminal connection；

Optionally, the core network control surface function judges whether the polymerization for needing to use access network node granularity for terminal Tunnel, comprising:

Tunnel selection auxiliary information is provided to core network control surface function in terminal or selection auxiliary information in tunnel is not provided When, the signing information of terminal described in the core network control surface functional inquiry；

The core network control surface function judges whether to need to use access network node for terminal according to the signing information The aggregating tunnel of granularity.

The 4th aspect according to an embodiment of the present invention, additionally provides a kind of access network node, comprising:

First judgment module, the aggregating tunnel for judging whether to need to use access network node granularity for terminal；

Receiving module, for if desired using the aggregating tunnel of the access network node granularity for the terminal, in core After session connection between network control surface function and core network user face function is established, receives and be used for from core network control surface function Distinguish the terminal iidentification of the terminal connection；

First mapping block, for the tunnel information and the access network node according to the terminal iidentification, aggregating tunnel The information in the downlink transfer channel of terminaloriented, establishes the mapping relations of downstream transmission；

The terminal iidentification is sent to the terminal for the access network node by the first sending module.

Optionally, the first judgment module includes:

First receiving unit, the tunnel for receiving terminal transmission select auxiliary information；

First judging unit, for selecting auxiliary information to judge whether to need to use access net for terminal according to the tunnel The aggregating tunnel of node granularity.

Optionally, the receiving module includes:

First transmission unit, the access network node aggregating tunnel opposite end core net for being sent to core network control surface function The mark of user plane functions；

Second receiving unit, for receiving the IP address for the terminal that the core network control surface function is sent；

Or

Second transmission unit, for the mark to core network control surface function transmission terminal type and access network node, or Person sends terminal type to core network control surface function；

Third receiving unit, for receiving the IP address for the terminal that the core network control surface function is sent；

Optionally, the terminal iidentification be one for indicate terminal connection label information, the label information be by Core network control surface function is terminal distribution, and core network control surface establishes request message by user face and transmits the label information Give core network user face function.

Optionally, if upstream data packet is transmitted to the access network node, the access network node further include:

Upstream data packet transmission module, if only supporting aggregating tunnel mechanism for the access network node, by upstream data It wraps and is mapped with the aggregating tunnel of access network node granularity, upstream data is forwarded a packet into corresponding core network user face function Energy；Or

If the access network node supports aggregating tunnel mechanism and other tunneling mechanisms, by wireless transfer channel mark and tunnel Road mark is mapped, and the upstream data is forwarded a packet to corresponding core network user face function.

Optionally, if downlink data packet is transmitted to the access network node by the aggregating tunnel of access network node granularity When, the access network node further include:

Downlink data packet identification module, for identification terminal iidentification in the downlink data packet；

Downstream packet transmission module, for the mapping relations according to the terminal iidentification and downlink transfer channel, by institute It states downlink data packet and is transmitted to the terminal.

Optionally, if the terminal iidentification is empty IP address, the access network node further include:

Second mapping block, for by identifying that dhcp message establishes the IP address of terminal and the mapping in downlink transfer channel Relationship.

The 5th aspect according to an embodiment of the present invention, additionally provides a kind of core network control surface function, comprising:

First determining module, for determining when determination needs to use the aggregating tunnel of access network node granularity for terminal To the terminal iidentification of terminal distribution；

Second sending module, for sending the terminal iidentification of the terminal to access network node, so that access network node root According to the information in the downlink transfer channel of terminal iidentification, tunnel information and access network node terminaloriented, downstream transmission is established Mapping relations.

Optionally, the first determining module includes:

First determination unit, for the mark according to access network node aggregating tunnel opposite end core network user face function, really Fixed corresponding core network user function；

First allocation unit, for being the terminal point from IP address pond corresponding to the function of the core network user face With IP address；

Or

Second determination unit determines corresponding core network user for the mark according to terminal type and access network node Face function；

Third judging unit, the label for judging whether to need to be used to indicate the connection of terminal for the terminal distribution one Information；

Second allocation unit, for if desired being used to indicate the label information of the connection of terminal for the terminal distribution one, And established in message in user face and the label information is sent to core network user face, by core network control surface function by the mark Label information is sent to the access network node.

The 6th aspect according to an embodiment of the present invention, additionally provides a kind of core network control surface function, comprising:

Second judgment module, for providing tunnel selection auxiliary information to core network control surface function in terminal or not providing When tunnel selects auxiliary information, judge whether the aggregating tunnel for needing to use access network node granularity for terminal；

Second determining module, for if desired using the aggregating tunnel of the access network node granularity for the terminal, really The fixed terminal iidentification connected for distinguishing the terminal；

Third sending module, for sending the terminal iidentification of the terminal to access network node, so that access network node root According to the information in the downlink transfer channel of terminal iidentification, tunnel information and access network node terminaloriented, downstream transmission is established Mapping relations.

Optionally, second judgment module includes:

Query unit, for providing tunnel selection auxiliary information to core network control surface function in terminal or not providing tunnel When selecting auxiliary information, the signing information of the terminal is inquired；

4th judging unit, for judging whether to need to use access network node granularity for terminal according to the signing information Aggregating tunnel.

A technical solution in above-mentioned technical proposal have the following advantages that or the utility model has the advantages that fixed wireless UE scene Under, using simplified tunneling mechanism, the Tunnel Identifier based on AN Node granularity is established, that is, the UE for accessing identical AN Node is shared Identical upstream and downstream user face Tunnel Identifier.The tunneling mechanism based on AN Node granularity in embodiment, simplifies gateway and base It stands the tunnel management ability of side, simplifies the user face Tunnel Identifier message in process, save tunnel resource.

Detailed description of the invention

Fig. 1 is the schematic diagram of the fixed wireless UE access network architecture；

Fig. 2 is the process of the method for the user face data tunnel transmission of access network node granularity in the embodiment of the present invention one Figure；

Fig. 3 is the process of the method for the user face data tunnel transmission of access network node granularity in the embodiment of the present invention two Figure；

Fig. 4 is the schematic diagram of the aggregating tunnel PDU session establishment process of AN Node granularity in the embodiment of the present invention three；

Fig. 5 is the schematic diagram of the aggregating tunnel PDU session establishment process of AN Node granularity in the embodiment of the present invention four；

Fig. 6 is that the aggregating tunnel of AN Node granularity in the embodiment of the present invention five adheres to the schematic diagram of (Attach) process；

Fig. 7 is that the aggregating tunnel of AN Node granularity in the embodiment of the present invention six adheres to the schematic diagram of (Attach) process；

Fig. 8 is the structural schematic diagram of access network node in the embodiment of the present invention seven；

Fig. 9 is the structural schematic diagram of core network control surface function in the embodiment of the present invention eight；

Figure 10 is the process of the method for the user face data tunnel transmission of access network node granularity in the embodiment of the present invention nine Figure；

Figure 11 is the structural schematic diagram of core network control surface function in the embodiment of the present invention ten.

Specific embodiment

Exemplary embodiments of the present disclosure are described in more detail below with reference to accompanying drawings.Although showing the disclosure in attached drawing Exemplary embodiment, it being understood, however, that may be realized in various forms the disclosure without should be by embodiments set forth here It is limited.On the contrary, these embodiments are provided to facilitate a more thoroughly understanding of the present invention, and can be by the scope of the present disclosure It is fully disclosed to those skilled in the art.

One skilled in the art will appreciate that embodiments of the present invention can be implemented as a kind of system, device, equipment, method Or computer program product.Therefore, the embodiment of the present invention can be with specific implementation is as follows: complete hardware, complete The form that software (including firmware, resident software, microcode etc.) or hardware and software combine.

The embodiment of the present invention is suitable for new network framework, such as the 5G network architecture.Referring to Fig. 1, end shown in figure End, as fixed wireless UE (such as fixed IoT equipment or with 5G be passback family gateway equipment) tunneling mechanism that accesses is excellent Change.This Terminal Type often has such as: do not need mobility, to the of less demanding of QoS difference, thus tunneling mechanism used can letter Change, tunnel granularity can be reduced to AN Node granularity, that is, the UE for accessing identical AN Node shares a Tunnel Identifier.

The 5G network architecture is mainly by core network control surface function (CP Functions) and core network user face function (UP Function it) forms.Core network control surface function includes Session Management (session management) function, realizes user face The foundation in channel.Core network user face function mainly realizes the forwarding of data packet.

Embodiment one

Referring to fig. 2, a kind of method of the cellular network User face data tunnel transmission of access network node granularity is shown in figure Process, the specific steps are as follows:

Step 201, access network node judge whether the aggregating tunnel for needing to use access network node granularity for terminal, if It is then to enter step 202；It otherwise, is terminal distribution radio resource according to existing mode, such as: according in existing EPC system Carrying granularity tunneling mechanism be terminal distribution radio resource, herein no longer apply state.

Above-mentioned access network node is alternatively referred to as AN Node, referring to Fig. 1.

Above-mentioned terminal can be fixed wireless UE, such as fixed IoT equipment or be the family gateway equipment returned with 5G Deng.

The aggregating tunnel of above-mentioned access network node granularity refer to by multiple links (such as be carried as granularity foundation it is multiple Link) it is polymerized to a tunnel using access network node as granularity, which has a Tunnel Identifier, accesses identical AN The UE of Node can share the Tunnel Identifier.

In the present embodiment, whether access network node can be judged by the following manner needs to use access net section for terminal The aggregating tunnel of point granularity:

Access network node receives the tunnel that terminal is sent and selects auxiliary information, and then access network node selects auxiliary according to tunnel Supplementary information judges whether the aggregating tunnel for needing to use access network node granularity for terminal, wherein tunnel selects auxiliary information can To be terminal type；

After step 202, the session connection between core network control surface function and core network user face function are established, net is accessed Node receives the terminal iidentification for distinguishing terminal connection from core network control surface function；

In the present embodiment, the terminal iidentification for distinguishing terminal connection can be the end of core network control surface function distribution The IP address at end, such as the address IPv4, are also possible to the label information of the terminal of core network control surface function distribution.

Optionally, it is terminal distribution that above-mentioned label information, which is by core network control surface function, and core network control surface passes through use Family face establishes request message and the label information is passed to core network user face function.

In the present embodiment, access network node can be received from core network control surface function eventually by following two mode The terminal iidentification at end:

The access network node aggregating tunnel opposite end core net that mode one, access network node are sent to core network control surface function The mark of user plane functions；Access network node receives the IP address for the terminal that core network control surface function is sent；Wherein, terminal IP address is to be determined by core network control surface function according to access network node aggregating tunnel opposite end core network user face function；

Mode two, access network node send the mark of terminal type and access network node to core network control surface function, or Person's access network node sends terminal type to core network control surface function；Access network node receives core network control surface function and sends Terminal IP address；Wherein, the IP address of terminal is to polymerize tunnel according to the access network node by core network control surface function What road opposite end core network user face function determined.

Step 203, access network node are according to terminal iidentification, the tunnel information of aggregating tunnel and access network node terminaloriented Downlink transfer channel information, establish the mapping relations of downstream transmission；

The tunnel information of above-mentioned aggregating tunnel can be the mark in tunnel, such as tunnel ID, be also not limited to certainly.

Specifically, access network node is according to the letter in the downlink transfer channel of terminal iidentification and access network node terminaloriented Breath, establishes the mapping relations of downlink transfer；Access network node establishes uplink according to the tunnel information of terminal iidentification and aggregating tunnel The mapping relations of transmission, that is, the UE for accessing identical AN Node can share identical upstream and downstream user face Tunnel Identifier.

Terminal iidentification is sent to terminal by step 204, access network node.

The prior art is to carry the tunneling mechanism of granularity.However in the case of the big connection of Internet of Things, the tunnel based on carrying granularity Road mechanism needs network side to safeguard a large amount of tunnel identification information, brings the waste of Internet resources.Use Cellular Networks as solid Also because mobility requirement is low under the scene of fixed width band passback, the tunnel based on carrying granularity equally causes wave to Internet resources Take.In the present embodiment, it under the scene of fixed wireless UE, using simplified tunneling mechanism, establishes based on AN Node granularity Tunnel Identifier, that is, the UE for accessing identical AN Node share identical upstream and downstream user face Tunnel Identifier.In embodiment based on AN The tunneling mechanism of Node granularity simplifies the tunnel management ability of gateway and base station side, simplifies the user face tunnel in process Message is identified, tunnel resource is saved.

Embodiment two

Referring to Fig. 3, a kind of method of the cellular network User face data tunnel transmission of access network node granularity is shown in figure Process, the specific steps are as follows:

Step 301, determine need for terminal use access network node granularity aggregating tunnel when, core network control surface function It can determine that the terminal iidentification of terminal distribution；

In the present embodiment, core network control surface function following manner is determined to the terminal iidentification of terminal distribution:

Mode one, core network control surface function are according to access network node aggregating tunnel opposite end core network user face function, really Fixed corresponding core network user function；Core network control surface function IP address Chi Zhongwei corresponding to the function of core network user face Terminal distribution IP address；

Mode two, core network control surface function determine corresponding core according to the mark of terminal type and access network node Network users face function；Core network control surface function judges whether to need the label for being used to indicate the connection of terminal for terminal distribution one Information；If so, core network control surface function is terminal distribution label information, and is established in message in user face and believe the label Breath is sent to core network user face, and label information is sent to access network node by core network control surface function.

Step 302, core network control surface function send the terminal iidentification of the terminal to access network node, so that access net Node establishes uplink and downlink according to the information in the downlink transfer channel of terminal iidentification, tunnel information and access network node terminaloriented The mapping relations of transmission.

In the present embodiment, it under the scene of fixed wireless UE, using simplified tunneling mechanism, establishes and is based on AN Node The Tunnel Identifier of granularity, that is, the UE for accessing identical AN Node share identical upstream and downstream user face Tunnel Identifier.In embodiment Based on the tunneling mechanism of AN Node granularity, the tunnel management ability of gateway and base station side is simplified, the user in process is simplified Face Tunnel Identifier message saves tunnel resource.

Embodiment three

Referring to fig. 4, the aggregating tunnel PDU session establishment process of AN Node granularity is shown in figure, is led in the present embodiment The IP address for crossing UE (terminal) distinguishes UE connection, the specific steps are as follows:

Step 401, UE send session establishment request message to AN Node；

Above-mentioned session establishment request message includes but is not limited to: tunnel selects auxiliary information, which selects auxiliary information It can be terminal type.

For certain Terminal Type, such as fixed wireless UE (such as fixed IoT equipment or with 5G be that the home gateway returned is set It is standby) access tunneling mechanism optimization.This Terminal Type often has such as: do not need mobility, to the of less demanding of QoS difference, because And tunneling mechanism used can simplify, tunnel granularity can be reduced to AN Node granularity, that is, the UE for accessing identical AN Node is shared One Tunnel Identifier.

Step 402, AN Node send session establishment request message to core network control surface function；

In the present embodiment, the tunnel selection auxiliary information that AN Node is carried by UE judges whether UE accesses AN Node Granularity tunnel.When AN Node judges that the UE need to use the granularity tunnel AN Node:

Tunnel opposite end core network user face function (core is added in a kind of mode, AN Node in the session establishment request message Heart network users face function) IP address and be transmitted to core network control surface function.

Another way, it will words establish request message, and (including terminal type, access network node identify (AN Node ID) Deng) it is transmitted to core network control surface function.

It should be noted that if core network control surface function can judge the AN according to the session establishment request message source Node can not then carry AN Node ID in session establishment request message.

Step 403, core network control surface function send user face to core network user face function and establish request；

In the present embodiment, core network control surface function is according to information (such as the core net in session establishment request message The IP address or terminal type and AN Node ID of user plane functions) selection corresponding core network user face function, and from this IP address is distributed for UE in IP address pond corresponding to the function of core network user face, and core network control surface function will be to UE points The IP address matched informs core network user face function.

Step 404, core network user face function send the foundation of user face to core network control surface function and reply message.

Step 405, core network control surface function send session establishment to AN Node and reply message；

Session establishment replies message including but not limited to: the IP address of UE.It should be noted that the IP address of UE can be by Access net identification issues AN Node for this purpose, the IP address of distributed to UE can be carried simultaneously in ectonexine signaling message (such as other than carrying in NAS message, while UE IP address being carried in AS message).

AN Node is built according to IP address, tunnel information and its information in the downlink transfer channel towards UE that UE is assigned The mapping relations of vertical downstream transmission.

Above-mentioned downlink transfer channel can be in the empty port load-supporting between access net and UE, or access net between BBU and RRU etc..

The information in above-mentioned downlink transfer channel can be allocated to the MAC Address etc. of the radio bearer ID or UE of UE.

The IP address of UE is passed to UE by step 406, AN Node, and is UE distributing radio resource.

It should be noted that if the IP address for distributing to terminal in above-mentioned steps 405 is an empty IP address, such as IPv4 Location 0.0.0.0, then after session connection foundation, UE sends message to Dynamic Host Configuration Protocol server, requests the address IPv4 of allocative efficiency, this When AN Node by identifying that dhcp message establishes the address IPv4 and the relationship of down going channel of UE.That is:

AN Node can first identify UE MAC Address and access side number in DHCP request message (DHCP request message) According to the corresponding relationship of channel (such as empty port load-supporting).Then, AN Node identifies DHCP response message again (dhcp response disappears Breath), so that the address IPv4 and the corresponding relationship of MAC Address of UE is obtained, to establish the IP address and UE down going channel of UE Corresponding relationship.

Step 407, AN Node send session establishment to core network control surface function and complete message.

PDU session establishment process is described in above-mentioned steps 401~407, is situated between below with reference to step 408a and step 408b The uplink and downlink that continues data transmission scheme.

Step 408a, when transmitting uplink data is to AN Node, AN Node by the UE upstream data sent and tunnel into Row mapping carries out tunnel encapsulation to data packet, is forwarded to corresponding core network user face function.

If AN Node only supports aggregating tunnel, uplink is mapped in aggregating tunnel, by multiple wireless transfer channel marks Know and does many-one mapping with an aggregating tunnel mark.

If AN Node supports other tunneling mechanisms (such as tunnel of PDU session granularity) simultaneously, AN Node is by a nothing Line transmission channel mark (such as MAC Address of Radio Bearer ID (radio bearer identification) or UE) is done with a Tunnel Identifier One-to-one mapping.

Step 408b, in downlink data transmission to core network user face function, core network user face function passes through polymerization Tunnel or other tunnels are by downlink data transmission to AN Node, and AN Node is by corresponding downlink transfer channel by lower line number According to being transmitted to UE.

If AN Node supports other tunneling mechanisms (such as tunnel of PDU session granularity), downlink data packet to reach simultaneously When AN, AN judgement is the downlink data transmitted from which class tunnel,

If mode one is sent from PDU session granularity tunnel, the session granularity tunnel PDU and access net downlink transfer are logical There is one-to-one relationship in road.It can be carried out with such as empty port load-supporting ID corresponding, be transferred to UE downwards.

If mode two is sent from Node granularity aggregating tunnel, AN Node identifies the UE IP in downlink data packet Address (destination address of data packet in tunnel), will according to the mapping relations of the IP address of the UE and access row transmission channel off the net Downlink data packet is transmitted to UE, and above-mentioned access row transmission channel off the net can be the empty port load-supporting between access net and UE, or access In netting between BBU and RRU etc..

Example IV

It in the present embodiment, can in addition to IP address in aggregating tunnel by the connection that the label information of UE distinguishes UE Downlink data packet is identified by introducing the label information of individual UE.

Referring to Fig. 5, the aggregating tunnel PDU session establishment process of AN Node (access network node) granularity is shown in figure, is had Steps are as follows for body:

Step 501, UE send session establishment request message to AN Node；

Step 502, AN Node send session establishment request message to core network control surface function；

The label information for the connection distribution UE that step 503, core network control surface function are the UE, and established by user face Message transmission gives core network user face function；

It is specific as follows:

Core network control surface function judges whether label information (the alternatively referred to as ID mark for needing to distribute UE for the UE connection Know), if so, the label information for the connection distribution UE that core network control surface function is the UE, and message is established by user face Pass to core network user face function.Label of the core network user face function in the downlink data packet for issuing UE comprising the UE is believed Breath, when such as using GTP tunnel, the label information of the UE can be labeled in " encapsulation header " word between the packet header IP and user Payload Section.

Optionally, core network control surface function can (the non-IP connection of such as Internet of Things be eventually according to network strategy, terminal type End) judge whether to need to distribute ID mark for the UE connection.

Step 504, core network user face function send the foundation of user face to core network control surface function and reply message；

Step 505, core network control surface send session establishment to AN Node and reply message, and content includes but is not limited to: should The label information of UE connection.The label information of UE can be identified with accessed network and (such as be carried in AS message).

AN Node is according to the label information of the UE for distinguishing UE connection, tunnel information and its towards the downlink transfer of UE The information in channel establishes the mapping relations of downstream transmission.

The label information of UE is passed to UE by step 506, AN Node, and is UE distributing radio resource.

Step 507, AN Node send session establishment to core network control surface function and complete message.

PDU session establishment process is described in above-mentioned steps 501~507, is situated between below with reference to step 508a and step 508b The uplink and downlink that continues data transmission scheme.

Step 508a, when transmitting uplink data is to AN Node, AN Node by the UE upstream data sent and tunnel into Row mapping carries out tunnel encapsulation to data packet, is forwarded to corresponding core network user face function.

Step 508b, core network user face function is added downlink tunnel mark and is used in the packet encapsulation head for issuing UE In the label information for the UE for distinguishing UE connection, and it is forwarded to correct AN Node.AN Node according to the label information of the UE and Downlink data packet is transmitted to UE by the mapping relations for accessing row transmission channel off the net, and above-mentioned access row transmission channel off the net can be It accesses in the empty port load-supporting between net and UE, or access net between BBU (Remote Radio Unit) and RRU (baseband processing unit) etc..

Embodiment five

Referring to Fig. 6, aggregating tunnel attachment (Attach) process of AN Node granularity is shown in figure, in the present embodiment UE connection is distinguished by the IP address of UE (terminal), the specific steps are as follows:

Step 601, UE send Attach Request message to AN Node；

Above-mentioned Attach Request message includes but is not limited to: tunnel selects auxiliary information, which selects auxiliary information can be with It is terminal type.

Step 602, AN Node send Attach Request message to core network control surface function；

Tunnel opposite end core network user face function (core net is added in a kind of mode, AN Node in the Attach Request message User plane functions) IP address and be transmitted to core network control surface function.

Another way, by Attach Request message (including terminal type, access network node identify (AN Node ID) etc.) It is transmitted to core network control surface function.

Step 603, core network control surface function send user face to core network user face function and establish request；

In the present embodiment, core network control surface function is according to information (such as the core network user in Attach Request message The IP address or terminal type and AN Node ID of face function) selection corresponding core network user face function, and from the core IP address is distributed for UE in IP address pond corresponding to the function of network users face, and core network control surface function will be distributed to UE IP address informs core network user face function.

Step 604, core network user face function send the foundation of user face to core network control surface function and reply message.

Step 605, core network control surface function send attachment to AN Node and reply message；

Attachment replies message including but not limited to: the IP address of UE.It should be noted that the IP address of UE can be accessed Net identification issues AN Node (such as in ectonexine signaling message for this purpose, the IP address of distributed to UE can be carried simultaneously Other than carrying in NAS message, while UE IP address is carried in AS message).

The IP address of UE is passed to UE by step 606, AN Node, and is UE distributing radio resource.

It should be noted that if the IP address for distributing to terminal in above-mentioned steps 805 is an empty IP address, such as IPv4 Location 0.0.0.0, then after session connection foundation, UE sends message to Dynamic Host Configuration Protocol server, requests the address IPv4 of allocative efficiency, this When AN Node by identifying that dhcp message establishes the address IPv4 and the relationship of down going channel of UE.That is:

Step 607, AN Node send session establishment to core network control surface function and complete message.

PDU session establishment process is described in above-mentioned steps 601~607, is situated between below with reference to step 608a and step 608b The uplink and downlink that continues data transmission scheme.

Step 608a, when transmitting uplink data is to AN Node, AN Node by the UE upstream data sent and tunnel into Row mapping carries out tunnel encapsulation to data packet, is forwarded to corresponding core network user face function.

Step 608b, in downlink data transmission to core network user face function, core network user face function passes through polymerization Tunnel or other tunnels are by downlink data transmission to AN Node, and AN Node is by corresponding downlink transfer channel by lower line number According to being transmitted to UE.

Embodiment six

Referring to Fig. 7, aggregating tunnel attachment (Attach) process of AN Node granularity is shown in figure, the specific steps are as follows:

Step 701, UE send Attach Request message to AN Node；

Step 702, AN Node send Attach Request message to core network control surface function；

The label information for the connection distribution UE that step 703, core network control surface function are the UE, and established by user face Message transmission gives core network user face function；

It is specific as follows:

Step 704, core network user face function send the foundation of user face to core network control surface function and reply message；

Step 705, core network control surface send attachment to AN Node and reply message, and content includes but is not limited to: the UE connects The label information connect.The label information of UE can be identified with accessed network and (such as be carried in AS message).

The label information of UE is passed to UE by step 706, AN Node, and is UE distributing radio resource.

Step 707, AN Node send session establishment to core network control surface function and complete message.

PDU session establishment process is described in above-mentioned steps 701~707, is situated between below with reference to step 708a and step 708b The uplink and downlink that continues data transmission scheme.

Step 708a, when transmitting uplink data is to AN Node, AN Node by the UE upstream data sent and tunnel into Row mapping carries out tunnel encapsulation to data packet, is forwarded to corresponding core network user face function.

Step 708b, core network user face function is added downlink tunnel mark and is used in the packet encapsulation head for issuing UE In the label information for the UE for distinguishing UE connection, and it is forwarded to correct AN Node.AN Node according to the label information of the UE and Downlink data packet is transmitted to UE by the mapping relations for accessing row transmission channel off the net, and above-mentioned access row transmission channel off the net can be It accesses in the empty port load-supporting between net and UE, or access net between BBU and RRU etc..

Embodiment seven

Referring to Fig. 8, a kind of access network node is shown in figure, access network node 800 includes:

First judgment module 801, the aggregating tunnel for judging whether to need to use access network node granularity for terminal；

Receiving module 802, for if desired using the aggregating tunnel of the access network node granularity for the terminal, from core The terminal iidentification for distinguishing the terminal connection is received at heart network control surface function；

First mapping block 803, for according to the tunnel information of the terminal iidentification, aggregating tunnel and access net section The information in the downlink transfer channel of point terminaloriented, establishes the mapping relations of downstream transmission；

The terminal iidentification is sent to the terminal for the access network node by the first sending module 804.

In the present embodiment, optionally, the first judgment module includes:

In the present embodiment, optionally, the receiving module includes:

Or

In the present embodiment, optionally, the terminal iidentification is the label information of a connection for indicating terminal, described It is terminal distribution that label information, which is by core network control surface function, and core network control surface establishes request message by user face should Label information passes to core network user face function.

In the present embodiment, optionally, if upstream data packet is transmitted to the access network node, the access network node Further include:

In the present embodiment, optionally, if downlink data packet is transmitted to institute by the aggregating tunnel of access network node granularity When stating access network node, the access network node further include:

In the present embodiment, optionally, if the terminal iidentification is empty IP address, the access network node further include:

Embodiment eight

Referring to Fig. 9, a kind of core network control surface function is shown in figure, core network control surface function 900 includes:

First determining module 901, for determine need for terminal use access network node granularity aggregating tunnel when, really The fixed terminal iidentification to terminal distribution；

Second sending module 902, for sending the terminal iidentification of the terminal to access network node, so that access network node According to the information in the downlink transfer channel of terminal iidentification, tunnel information and access network node terminaloriented, downstream transmission is established Mapping relations.

In the present embodiment, optionally, the first determining module includes:

Or

Embodiment nine

Referring to Figure 10, a kind of method of the cellular network User face data tunnel transmission of access network node granularity is shown in figure Process, the specific steps are as follows:

Step 1001 provides tunnel selection auxiliary information to core network control surface function in terminal or does not provide tunnel selection When auxiliary information, core network control surface function judges whether the aggregating tunnel for needing to use access network node granularity for terminal, if It is to enter step 1002；Otherwise, terminate this process；

Step 1002, core network control surface function determine the terminal iidentification for distinguishing the terminal connection；

Step 1003, core network control surface function send the terminal iidentification of the terminal to access network node, so that access Net node is established up and down according to the information in the downlink transfer channel of terminal iidentification, tunnel information and access network node terminaloriented The mapping relations of row transmission.

In the present embodiment, optionally, the core network control surface function judges whether to need to use access net for terminal The aggregating tunnel of node granularity, comprising:

In the present embodiment, optionally, core network control surface function determines the terminal mark for distinguishing the terminal connection Know, comprising:

Or

Embodiment ten

Referring to Figure 11, a kind of core network control surface function is shown in figure, core network control surface function 1100 includes:

Second judgment module 1101, for providing tunnel selection auxiliary information or not to core network control surface function in terminal When tunnel selection auxiliary information is provided, judge whether the aggregating tunnel for needing to use access network node granularity for terminal；

Second determining module 1102, for if desired using the polymerization tunnel of the access network node granularity for the terminal Road determines the terminal iidentification for distinguishing the terminal connection；

Third sending module 1103, for sending the terminal iidentification of the terminal to access network node, so that access net section Point establishes uplink and downlink biography according to the information in the downlink transfer channel of terminal iidentification, tunnel information and access network node terminaloriented Defeated mapping relations.

Optionally, second judgment module includes:

It should be understood that " one embodiment " or " embodiment " that specification is mentioned in the whole text mean it is related with embodiment A particular feature, structure, or characteristic is included at least one embodiment of the present invention.Therefore, occur everywhere in the whole instruction " in one embodiment " or " in one embodiment " not necessarily refer to identical embodiment.In addition, these specific features, knot Structure or characteristic can combine in any suitable manner in one or more embodiments.

In various embodiments of the present invention, it should be appreciated that magnitude of the sequence numbers of the above procedures are not meant to execute suitable Sequence it is successive, the execution of each process sequence should be determined by its function and internal logic, the implementation without coping with the embodiment of the present invention Process constitutes any restriction

In addition, the terms " system " and " network " are often used interchangeably herein.

It should be understood that the terms "and/or", only a kind of incidence relation for describing affiliated partner, expression can deposit In three kinds of relationships, for example, A and/or B, can indicate: individualism A exists simultaneously A and B, these three situations of individualism B. In addition, character "/" herein, typicallys represent the relationship that forward-backward correlation object is a kind of "or".

In embodiment provided herein, it should be appreciated that " B corresponding with A " indicates that B is associated with A, can be with according to A Determine B.It is also to be understood that determine that B is not meant to determine B only according to A according to A, it can also be according to A and/or other information Determine B.

In several embodiments provided herein, it should be understood that disclosed method and apparatus, it can be by other Mode realize.For example, the apparatus embodiments described above are merely exemplary, for example, the division of the unit, only For a kind of logical function partition, there may be another division manner in actual implementation, such as multiple units or components can combine Or it is desirably integrated into another system, or some features can be ignored or not executed.Another point, shown or discussed phase Coupling, direct-coupling or communication connection between mutually can be through some interfaces, the INDIRECT COUPLING or communication of device or unit Connection can be electrical property, mechanical or other forms.

It, can also be in addition, the functional units in various embodiments of the present invention may be integrated into one processing unit It is that the independent physics of each unit includes, can also be integrated in one unit with two or more units.Above-mentioned integrated list Member both can take the form of hardware realization, can also realize in the form of hardware adds SFU software functional unit.

The above-mentioned integrated unit being realized in the form of SFU software functional unit can store and computer-readable deposit at one In storage media.Above-mentioned SFU software functional unit is stored in a storage medium, including some instructions are used so that a computer Equipment (can be personal computer, server or the network equipment etc.) executes receiving/transmission method described in each embodiment of the present invention Part steps.And storage medium above-mentioned includes: USB flash disk, mobile hard disk, read-only memory (Read-Only Memory, abbreviation ROM), random access memory (Random Access Memory, abbreviation RAM), magnetic or disk etc. are various can store The medium of program code.

Above-described is the preferred embodiment of the present invention, it should be pointed out that the ordinary person of the art is come It says, several improvements and modifications can also be made under the premise of not departing from principle of the present invention, these improvements and modifications also exist In protection scope of the present invention.

Claims

1. a kind of method of the cellular network User face data tunnel transmission of access network node granularity characterized by comprising

If desired the aggregating tunnel that the access network node granularity is used for the terminal, then in core network control surface functional entity After session connection between the functional entity of core network user face is established, the access network node is from core network control surface functional entity Place receives the terminal iidentification for distinguishing the terminal connection；

The access network node is according to the terminal iidentification, the tunnel information and the access network node terminaloriented of aggregating tunnel Downlink transfer channel information, establish the mapping relations of downstream transmission；

2. the method according to claim 1, wherein access network node judges whether to need to use access for terminal The aggregating tunnel of net node granularity, comprising:

The access network node selects auxiliary information to judge whether to need to use access network node grain for terminal according to the tunnel The aggregating tunnel of degree.

3. the method according to claim 1, wherein the access network node is from the core network control surface function The terminal iidentification of the terminal is received at entity, comprising:

The access network node aggregating tunnel opposite end core net that the access network node is sent to core network control surface functional entity is used The mark of family face functional entity；

The access network node receives the IP address for the terminal that the core network control surface functional entity is sent；

Wherein, the IP address of the terminal is by core network control surface functional entity according to the access network node aggregating tunnel pair What end core network users face functional entity determined；

Or

The access network node sends the mark of terminal type and access network node, Huo Zhesuo to core network control surface functional entity It states access network node and sends terminal type to core network control surface functional entity；

Wherein, the IP address of the terminal is by core network control surface functional entity according to the access network node aggregating tunnel pair What end core network users face functional entity determined.

4. the method according to claim 1, wherein the terminal iidentification is a connection for indicating terminal Label information, it is terminal distribution that the label information, which is by core network control surface functional entity, real by core network control surface function Body establishes request message by user face and the label information is passed to core network user face functional entity.

5. the method according to claim 1, wherein if when upstream data packet is transmitted to the access network node, The method also includes:

If the access network node only supports aggregating tunnel mechanism, the access network node saves upstream data packet and access net The aggregating tunnel of point granularity is mapped, and upstream data is forwarded a packet to corresponding core network user face functional entity；Or

If the access network node supports aggregating tunnel mechanism and other tunneling mechanisms, the access network node will be wirelessly transferred Gap marker is mapped with Tunnel Identifier, and the upstream data is forwarded a packet to corresponding core network user face functional entity.

6. method according to claim 1, which is characterized in that if downlink data packet passes through the polymerization tunnel of access network node granularity When road is transmitted to the access network node, the method also includes:

The access network node turns the downlink data packet according to the mapping relations of the terminal iidentification and downlink transfer channel Issue the terminal.

7. the method according to claim 1, wherein the method is also if the terminal iidentification is empty IP address Include:

The access network node is by identifying that dhcp message establishes the IP address of terminal and the mapping relations in downlink transfer channel.

8. the method according to the description of claim 7 is characterized in that the access network node is established eventually by identification dhcp message The IP address at end and the mapping relations in downlink transfer channel, comprising:

The MAC Address of terminal and the mapping relations in downlink transfer channel in the access network node identification DHCP request message, In, the DHCP request message is the IP for being used to request allocative efficiency that terminal is sent to Dynamic Host Configuration Protocol server after a connection setup The message of address；

The access network node identifies dhcp response message, obtains the mapping relations of the IP address of terminal and the MAC Address of terminal；

The access network node is according to the MAC Address of terminal and the mapping relations in downlink transfer channel and the IP address of terminal With the mapping relations of the MAC Address of terminal, the IP address of terminal and the mapping relations in downlink transfer channel are established.

9. a kind of method of the cellular network User face data tunnel transmission of access network node granularity characterized by comprising

Determining that the determination of core network control surface functional entity is given when needing to use the aggregating tunnel of access network node granularity for terminal The terminal iidentification of terminal distribution；

The core network control surface functional entity sends the terminal iidentification of the terminal to access network node, so that access network node According to the information in the downlink transfer channel of terminal iidentification, tunnel information and access network node terminaloriented, downstream transmission is established Mapping relations.

10. according to the method described in claim 9, it is characterized in that, core network control surface functional entity is determined to terminal distribution Terminal iidentification, comprising:

The core network control surface functional entity is according to access network node aggregating tunnel opposite end core network user face functional entity Mark, determines corresponding core network user function；

The core network control surface functional entity is institute from IP address pond corresponding to the functional entity of the core network user face State terminal distribution IP address；

Or

The core network control surface functional entity determines that corresponding core net is used according to the mark of terminal type and access network node Family face functional entity；

The core network control surface functional entity judges whether the connection for needing to be used to indicate terminal for the terminal distribution one Label information；

If so, the core network control surface functional entity is terminal distribution label information, and establishing in message in user face will The label information is sent to core network user face functional entity, is sent the label information by core network control surface functional entity To the access network node.

11. a kind of method of the cellular network User face data tunnel transmission of access network node granularity characterized by comprising

Tunnel selection auxiliary information is provided to core network control surface functional entity in terminal or selection auxiliary information in tunnel is not provided When, core network control surface functional entity judges whether the aggregating tunnel for needing to use access network node granularity for terminal；

If desired the aggregating tunnel of the access network node granularity is used for the terminal, then the core network control surface function is real Body determines the terminal iidentification for distinguishing the terminal connection；

12. according to the method for claim 11, which is characterized in that the core network control surface functional entity judges whether to need The aggregating tunnel of access network node granularity is used for terminal, comprising:

Tunnel selection auxiliary information is provided to core network control surface functional entity in terminal or selection auxiliary information in tunnel is not provided When, the core network control surface functional entity inquires the signing information of the terminal；

The core network control surface functional entity judges whether to need to use access network node for terminal according to the signing information The aggregating tunnel of granularity.

13. a kind of access network node characterized by comprising

Receiving module, for if desired using the aggregating tunnel of the access network node granularity for the terminal, in core network control After session connection between face functional entity processed and core network user face functional entity is established, from core network control surface functional entity Receive the terminal iidentification for distinguishing the terminal connection；

First mapping block, for according to the tunnel information of the terminal iidentification, aggregating tunnel and the access network node towards The information in the downlink transfer channel of terminal, establishes the mapping relations of downstream transmission；

14. access network node according to claim 13, which is characterized in that the first judgment module includes:

First judging unit, for selecting auxiliary information to judge whether to need to use access network node for terminal according to the tunnel The aggregating tunnel of granularity.

15. access network node according to claim 13, which is characterized in that the receiving module includes:

First transmission unit, the access network node aggregating tunnel opposite end core net for being sent to core network control surface functional entity The mark of user plane functions entity；

Second receiving unit, for receiving the IP address for the terminal that the core network control surface functional entity is sent；

Or

Second transmission unit, for the mark to core network control surface functional entity transmission terminal type and access network node, or Person sends terminal type to core network control surface functional entity；

Third receiving unit, for receiving the IP address for the terminal that the core network control surface functional entity is sent；

16. access network node according to claim 13, which is characterized in that the terminal iidentification is one for indicating terminal Connection label information, the label information be by core network control surface functional entity be terminal distribution, core network control surface Request message is established by user face, and the label information is passed into core network user face functional entity.

17. access network node according to claim 13, which is characterized in that if upstream data packet is transmitted to the access net When node, the access network node further include:

Upstream data packet transmission module, if only supporting aggregating tunnel mechanism for the access network node, by upstream data packet with The aggregating tunnel of access network node granularity is mapped, and it is real that upstream data is forwarded a packet to corresponding core network user face function Body；Or

If the access network node supports aggregating tunnel mechanism and other tunneling mechanisms, by wireless transfer channel mark and tunnel mark Knowledge is mapped, and the upstream data is forwarded a packet to corresponding core network user face functional entity.

18. 3 access network node according to claim 1, which is characterized in that if downlink data packet passes through access network node granularity Aggregating tunnel when being transmitted to the access network node, the access network node further include:

Downstream packet transmission module, for the mapping relations according to the terminal iidentification and downlink transfer channel, under described Row data packet is transmitted to the terminal.

19. access network node according to claim 13, which is characterized in that if the terminal iidentification is empty IP address, institute State access network node further include:

Second mapping block, for by identifying that dhcp message establishes the IP address of terminal and the mapping pass in downlink transfer channel System.

20. a kind of core network control surface functional entity characterized by comprising

First determining module, for determine need for terminal use access network node granularity aggregating tunnel when, determine to eventually Hold the terminal iidentification of distribution；

Second sending module, for sending the terminal iidentification of the terminal to access network node, so that access network node is according to end End mark, tunnel information and access network node terminaloriented downlink transfer channel information, establish the mapping of downstream transmission Relationship.

21. core network control surface functional entity according to claim 20, which is characterized in that the first determining module includes:

First determination unit, for the mark according to access network node aggregating tunnel opposite end core network user face functional entity, really Fixed corresponding core network user function；

First allocation unit, for being the terminal point from IP address pond corresponding to the functional entity of the core network user face With IP address；

Or

Second determination unit determines corresponding core network user face function for the mark according to terminal type and access network node It can entity；

Third judging unit, the label letter for judging whether to need to be used to indicate the connection of terminal for the terminal distribution one Breath；

Second allocation unit, for if desired be the terminal distribution one be used for indicate terminal connection label information, and User establishes in face in message the label information being sent to core network user face, by core network control surface functional entity by the mark Label information is sent to the access network node.

22. a kind of core network control surface functional entity characterized by comprising

Second judgment module, for providing tunnel selection auxiliary information to core network control surface functional entity in terminal or not providing When tunnel selects auxiliary information, judge whether the aggregating tunnel for needing to use access network node granularity for terminal；

Second determining module is determined and is used for if desired using the aggregating tunnel of the access network node granularity for the terminal In the terminal iidentification for distinguishing the terminal connection；

Third sending module, for sending the terminal iidentification of the terminal to access network node, so that access network node is according to end End mark, tunnel information and access network node terminaloriented downlink transfer channel information, establish the mapping of downstream transmission Relationship.

23. core network control surface functional entity according to claim 22, which is characterized in that the second judgment module packet It includes:

Query unit, for providing tunnel selection auxiliary information to core network control surface functional entity in terminal or not providing tunnel When selecting auxiliary information, the signing information of the terminal is inquired；

4th judging unit, for judging whether to need to use the poly- of access network node granularity for terminal according to the signing information Close tunnel.