CN103327642B - Data transmission method and device - Google Patents

Abstract

The invention discloses a kind of data transmission method and device, wherein, this method includes：IAGW receives the address request that terminal is sent；IAGW obtains network side and is the address of terminal distribution, and address is sent to terminal；IAGW realizes the data transmission between terminal and network side according to address, wherein, in network side, respectively each terminal establishes the carrying of data transmission.The present invention solve access in the prior art same wireless access network terminal type it is less and caused by radio access network resources waste the technical issues of, the technique effect for carrying out data transmission the same wireless network of different types of terminal access by iAGW is realized, improves the resource utilization of wireless access network.

Description

Data transmission method and device

Technical field

The present invention relates to the communications field, in particular to a kind of data transmission method and device.

Background technology

In order to keep 3-G (Generation Three mobile communication system) in the competitiveness of the communications field, provide to the user rate faster, time delay Lower and more personalized mobile communication service, meanwhile, reduce the operation cost of operator, third generation affiliate meter It draws (3rdGeneration Partnership Project, referred to as 3GPP) standard working group and is just being dedicated to evolution grouping system The research of system (Evolved Packet System, referred to as EPS).Fig. 1 shows the structural representation of evolution grouping domain system Figure, as shown in Figure 1, entire EPS system is divided into wireless access network and core net two parts.In the core network, ownership is contained to use Family server (Home Subscriber Server, referred to as HSS), mobility management entity (Mobility Management Entity, referred to as MME), Serving GPRS Support Node (Serving GPRS SupportNode, referred to as SGSN), strategy Charging rule functions (Policyand Charging Rule Function, referred to as PCRF), gateway (Serving Gateway, referred to as S-GW) and packet data gateway (PDN Gateway, referred to as P-GW).Each section is described below in detail Function：

Home subscriber server is the permanent storage place of user contracting data, positioned at the home network of user's signing.

Mobility management entity is storage place of the user contracting data in current network, is responsible for the non-of terminal to network Access layer (Non Access Stratum, referred to as NAS) signaling management, the safety verification function of terminal, the mobility of terminal Management, the tracking under user's idle mode and paging management function and bearer management.

Serving GPRS Support Node is global system for mobile communications (Global System for Mobile Communications, referred to as GSM) enhancing data transfer rate GSM evolution (Enhanced Data Rate for GSM Evolution, referred to as EDGE), wireless access network (GSM EDGE Radio Access Network, referred to as GERAN), Universal Mobile Communication System (Universal Mobile Telecommunications System, referred to as UMTS) and land Ground wireless access network (UMTS Terrestrial RadioAccess Network, referred to as UTRAN) user access core network The business support point of network, it is functionally similar with mobility management entity, it is responsible for location updating, paging management and the carrier pipe of user The functions such as reason.

Gateway is gateway of the core net to wireless system, and user plane bearer, the terminal for being responsible for terminal to core net are empty Function, Lawful Interception and the packet routing of data buffer storage, network side initiating business request under not busy pattern and forwarding work( Energy；Gateway is responsible for counting user terminal and uses the situation of wireless network, and generates the ticket that terminal uses wireless network, sends to Charging gateway.

Packet data gateway, is the gateway of evolution system and the exterior packet data network, it is connected to internet On packet data network, it is responsible for the distribution of Internet protocol (Internet Protocol, referred to as IP) address, the meter of terminal Take function, the grouping functions such as packet filtering and policy control.

Policy charging rule functional entity is to be responsible for providing charging control, online diameter credit control, thresholding control in evolution system The server of system and service quality (Quality of Service, referred to as QoS) strategy aspect rule.

Wireless access network is wireless by evolution base station (EvolvedNodeB, referred to as eNodeB) composition or base station and 3G Network controller (Radio Network Controllor, referred to as RNC) forms.It is mainly responsible for the transmitting-receiving of wireless signal, By air interface and terminal contact, radio resource, scheduling of resource and the access control of air interface are managed.

Above-mentioned Serving GPRS Support Node is the SGSN upgraded, can support the S4 interfaces between gateway, and Between mobility management unit using GPRS Tunnel Protocol version 2 (GPRS Tunneling Protocol version 2, Referred to as GTPv2) carry out intercommunication.And packet switch (Packet Switching, the letter for the SGSN for supporting 3G core nets Referred to as PS) the domain network architecture and Fig. 1 it is different.SGSN is connected with MME using gn interface at this time, and intercommunication is assisted using GPRS tunnels Discuss version 1 (GPRS Tunneling Protocol version 1, referred to as GTPv1).SGSN cannot be with gateway phase Even, Gateway GPRS Support Node (Gateway GPRS SupportNode, referred to as GGSN) is connected to directly by gn interface It is grouped data network access.

EPS also supports non-3 GPP system access in addition to supporting the access of above-mentioned 3GPP system, and non-as shown in Fig. 2, wherein The intercommunication of 3GPP system realizes that P-GW is as the anchor point between 3GPP and non-3 GPP system by S2a/S2b interfaces.What it is in EPS is It unites in Organization Chart, non-3 GPP system access is divided into trustless non-3 GPP access and trusted non-3 GPP access；Wherein, can not Trust packet data gateway (Evolved Packet Data Gateway, ePDG) and P- that non-3 GPP access need to be Jing Guo evolution GW is connected, and the interface between ePDG and P-GW is S2b；Trusted non-3 GPP access can directly be connect by S2a interfaces with P-GW, S2a interfaces carry out information exchange using proxy-mobile IP (Proxy Mobile IP, referred to as PMIP) agreement.

WLAN (Wireless LocalAreaNetwork, referred to as WLAN) connects as non-3 gpp trusty Enter network (Trusted Non-3GPP IP access Network, referred to as TNAN), for streamed data flow, gradual quilt Many operator's concerns, and its framework is as shown in Figure 2.

In order to make full use of long term evolution (Long Term Evolution, referred to as LTE) Internet resources, have EPS nets The operator of network wishes the either other kinds of terminal access of more WLAN terminals is attracted to come in, by LTE and multiple types Terminal merged, so as to expand wireless processing capacity, can also be further ensured that customer service QoS, move Dynamic property, safe and energy saving etc. requirement.

For it is above-mentioned the problem of, currently no effective solution has been proposed.

Invention content

The present invention provides a kind of data transmission method and devices, same wireless at least to solve to access in the prior art Access net terminal type it is less and caused by radio access network resources waste the technical issues of.

According to an aspect of the invention, there is provided a kind of data transmission method, including：IAGW receives the ground that terminal is sent Location request message；IAGW obtains network side and is the address of terminal distribution, and address is sent to terminal；IAGW is realized according to address Data transmission between terminal and network side, wherein, in network side, respectively each terminal establishes the carrying of data transmission.

Preferably, the converged network that network side is formed for wireless access network and converged CN.

Preferably, address request is dynamic host configuration protocol DHCP request or route requests；IAGW receives terminal After the address request of transmission, method further includes：IAGW generates resource allocation request according to DHCP request or route requests, Wherein, resource allocation request carries：The load identification of carrying established for terminal, grouped data network PDN type, terminal connect The radio access technology types of access point title and terminal；Resource allocation request is sent to network side by iAGW；Network side responds Resource allocation request, request is established in generation carrying, and carrying is established request and returns to iAGW.

Preferably, resource allocation request is sent to network side by iAGW, including：IAGW sends resource allocation to base station please It asks；Resource allocation request is sent to the mobile management unit of network side by base station.

Preferably, iAGW obtains the address that network side is terminal distribution, including：IAGW receives the carrying that network side returns and builds Vertical request, wherein, the address for carrying that network side is terminal distribution in request is established in carrying；IAGW is established in request from carrying and is obtained Take the address that network side is terminal distribution.

Preferably, iAGW obtains the address that network side is terminal distribution, including：When request is established in the carrying that network side returns In when not carrying the address for terminal distribution, iAGW sends DHCP request or route requests to network side, wherein, DHCP request Or route requests are used for the address that network side request network side is terminal distribution.

Preferably, request is established in network side generation carrying, including：The mobile management unit of network side receives what iAGW was sent Resource allocation request；Mobile management unit sends to the P-GW of network side and creates session request；Mobile management unit receives P-GW The establishment conversational response of return, wherein, create the ground that conversational response carries qos policy and charge information P-GW is terminal distribution Location, QOS, access point name APN, PDN type, PDN addresses and the EPS load identifications of EPS carryings；Mobile management unit according to Request is established in qos policy and accounting request generation carrying.

Preferably, when network side deploys strategy and charging control PCC, P-GW generates qos policy in the following way And charge information：P-GW selects a policy charging rule function PCRF for terminal；It is terminal that P-GW, which receives chosen PCRF, The qos policy and charge information of generation.

Preferably, after iAGW realizes the data transmission between terminal and network side according to address, the data transmission method is also Including：When data transmission is terminated between terminal and network side, iAGW deletes the carrying established for the terminal, discharges terminal occupancy Resource.

Preferably, iAGW deletes the carrying established for the terminal, discharges the resource of terminal occupancy, including：IAGW is received When the notification message or iAGW of the coverage area of terminal deviated from network side detect terminal deviated from network side coverage area, iAGW Resource release request is sent to network side；IAGW deletes the carrying established for the terminal；IAGW notice network sides are deleted terminal and are accounted for Resource.

Preferably, iAGW deletes the carrying established for the terminal, discharges the resource of terminal occupancy, including：IAGW is received To the instruction information of network side release terminal；IAGW discharges the terminal according to the carrying that instruction information deletion is that the terminal is established The resource of occupancy.Preferably, the above method is suitable for EPS system.

According to another aspect of the present invention, a kind of data transmission device is provided, in iAGW, including：Receiving unit, For receiving the address request of terminal transmission；Acquiring unit, for obtaining the address that network side is terminal distribution, and by ground Location is sent to terminal；Transmission unit, for realizing the data transmission between terminal and network side according to address, wherein, in network side, Respectively each terminal establishes the carrying of data transmission.

Preferably, which further includes：Unit is deleted, for terminating data transmission between terminal and network side When, the carrying established for the terminal is deleted, discharges the resource of terminal occupancy.

In the present invention, a variety of different types of terminals can obtain the address that network side is distributed for it by iAGW, and Data transmission with network side is realized according to the address.During carrying out data transmission, network side each newly accesses Terminal re-establishes a carrying, and the carrying and each terminal are one-to-one relationships, so as to ensure that the matter of data transmission Amount.By the above-mentioned means, solve access in the prior art same wireless access network terminal type it is less and caused by nothing The technical issues of line access wasting of resources, realize by iAGW by different types of terminal access same wireless network into The technique effect of row data transmission improves the resource utilization of wireless access network.

Description of the drawings

Attached drawing described herein is used to provide further understanding of the present invention, and forms the part of the application, this hair Bright illustrative embodiments and their description do not constitute improper limitations of the present invention for explaining the present invention.In the accompanying drawings：

Fig. 1 is the structure diagram according to the evolution grouping domain system of the relevant technologies；

Fig. 2 is the structure diagram that EPS system is accessed according to the terminal of the relevant technologies；

Fig. 3 is the structure diagram of the network architecture of converged CN according to embodiments of the present invention；

Fig. 4 is a kind of preferred flow charts of data transmission method according to embodiments of the present invention；

Fig. 5 is another preferred flow charts of data transmission method according to embodiments of the present invention；

Fig. 6 is a kind of preferred flow charts that request is established in generation carrying according to embodiments of the present invention；

Fig. 7 is a kind of preferred structure block diagram of data transmission device according to embodiments of the present invention；

Fig. 8 is another preferred structure block diagram of data transmission device according to embodiments of the present invention；

Fig. 9 is data transmission method interaction diagrams according to embodiments of the present invention；

Figure 10 is a kind of interaction diagrams of the processing method of termination user data transmission according to embodiments of the present invention；

Figure 11 is another interaction diagrams of the processing method of termination user data transmission according to embodiments of the present invention.

Specific embodiment

Come that the present invention will be described in detail below with reference to attached drawing and in conjunction with the embodiments.It should be noted that do not conflicting In the case of, the feature in embodiment and embodiment in the application can be combined with each other.

It is an object of the invention under the framework of 3GPP EPS, propose that the RAN node under a kind of converged CN perceives The data transmission method of mode.Terminal by the access gateway of fusion (integrated Access Gateway, referred to as IAGW it) accesses in LTE and EPC networks, to solve the technical issues of terminal can not access converged CN in the relevant technologies.

The present invention provides a kind of network architectures of preferred converged CN, are placed between terminal and base station, terminal and Interface between iAGW is eats dishes without rice or wine, and the interface between iAGW and base station is eats dishes without rice or wine.Terminal is just modeled into a 3GPP UE access To LTE and the packet-based core networks of evolution (Evolved Packet Core, referred to as EPC).As shown in figure 3, in the architecture, Including：HSS, mobile management unit, SGW, P-GW, base station, iAGW and terminal.Wherein, terminal include WLANUE and other Support the terminal of various possible access technology types.Wherein, following network element implements part increasing on the basis of existing technology Powerful：

HSS：Store the signing information and authorization data of iAGW and terminal.

Mobile management unit：It can be the S4SGSN of MME or support S4 interfaces, have with the type of iAGW and base station It closes.If iAGW and base station are UTRAN accesses (referred to as E-UTRAN) accesses of evolution, mobile management unit MME；Such as Fruit iAGW and base station are UTRAN accesses, then mobile management unit is S4SGSN.The network element is in addition to the similar work(in existing framework Can, further include the mapping for completing iAGW and UE bearer contexts.

P-GW：It is similar with the function in existing framework, and at the same time being serviced for iAGW and UE, and complete holding for iAGW and UE Carry context mapping relationship.

iAGW：On the one hand access is provided for different types of terminal, on the other hand as UE access network.It completes on itself Hereafter with the mapping of UE contexts and the maintenance of UE contexts.

Technical solution of the present invention is described in further detail in the following with reference to the drawings and specific embodiments, so that this The technical staff in field can be better understood from the present invention and can be practiced, but illustrated embodiment is not as the limit to the present invention It is fixed.

Embodiment 1

The present invention provides a kind of preferred data transmission method, as shown in figure 4, this method includes：

S402：IAGW receives the address request that terminal is sent；

S404：IAGW obtains network side and is the address of terminal distribution, and address is sent to terminal；

S406：IAGW realizes the data transmission between terminal and network side according to address, wherein, in network side, respectively often A terminal establishes the carrying of data transmission.

In the present embodiment, a variety of different types of terminals can obtain the ground that network side is distributed for it by iAGW Location, and the data transmission with network side is realized according to the address.During carrying out data transmission, network side is each newly connects The terminal entered re-establishes a carrying, and the carrying and each terminal are one-to-one relationships, so as to ensure that data transmission Quality.By the above-mentioned means, solve access in the prior art same wireless access network terminal type it is less and cause Radio access network resources waste the technical issues of, realize and different types of terminal accessed by same wireless network by iAGW The technique effect that network carries out data transmission improves the resource utilization of wireless access network.

In each preferred embodiment of the present embodiment, fusion of the network side for wireless access network and converged CN composition Network so that terminal can be accessed by iAGW in converged network, realizes efficiently using for converged network bandwidth resources.

In a preferred embodiment, the address request that terminal is sent is depending on terminal and the type of network , for example, when terminal is WLAN terminal, address request is dynamic host configuration protocol (Dynamic Host Configuration Protocol, referred to as DHCP) request or route requests, under the scene, iAGW receive terminal send Address request after, as shown in figure 5, the data transmission method further includes：

S502：IAGW generates resource allocation request according to DHCP request or route requests, wherein, resource allocation request carries Have：The nothing of the load identification of carrying, grouped data network PDN type, the access point name of terminal and terminal established for terminal Line access technology type；

S504：Resource allocation request is sent to network side by iAGW；

S506：IAGW receives the resource allocation received message of network side.

Resource allocation request is sent to the mobile management unit of network side by iAGW by base station.

IAGW can obtain the address that network side is terminal distribution in the following manner：

1) when network side for the address of terminal distribution by carrying in the message that is issued in network side, iAGW can directly from It is obtained in the message that network side issues.Network side iAGW receives the carrying that network side returns and establishes request, wherein, carrying is established please The address that network side is terminal distribution is carried in asking；IAGW is established in request from carrying and is obtained the ground that network side is terminal distribution Location.

2) when the carrying request that network side returns does not carry the address for terminal distribution, iAGW is sent to the network side DHCP request or route requests, for the address to network side request for terminal distribution, which is IP address for the request.

In above-mentioned preferred embodiment, the mode of several addresses for being retrieved as terminal distribution is provided, it is achieved thereby that The flexible access of terminal-pair converged network.

There are multiple network element collaborations to handle in network side, so as to fulfill the access to terminal, the network element mainly included has：It is mobile Administrative unit and P-GW.In a preferred embodiment, network side can be generated carrying by mode as shown in Figure 6 and be established Request, specific steps include：

S602：The mobile management unit of network side receives the resource allocation request that iAGW is sent；

S604：Mobile management unit sends to the P-GW of network side and creates session request；

S606：Mobile management unit receives the establishment conversational response of P-GW generations, wherein, which carries The qos policy and charge information that P-GW is transmitted.It is the address of terminal distribution, EPS carryings to create conversational response and also carry P-GW QOS, APN, PDN type, PDN addresses and EPS load identifications；

S608：Mobile management unit establishes request according to conversational response generation carrying is created.

In above-mentioned preferred embodiment, resource allocation request that each network element of network side is sent in response to iAGW is raw Request is established into carrying, to realize terminal data establishment of connection, increases the utilization rate of network side bandwidth.

When deploying PCC in network, if to generate qos policy and charge information, PGW needs to select one for terminal PCRF；By the PCRF generation qos policies and charge information that select and qos policy and charging policy are sent to PGW.

After terminal establishes data connection, if terminating data transmission between terminal and network side, iAGW, which can be deleted, is The carrying that the terminal is established discharges the resource of terminal occupancy.However the reason of release terminal data connection, may be：IAGW is received To the coverage area of terminal deviated from network side notification message or iAGW detect terminal deviated from network side coverage area or It is the instruction information that iAGW receives network side release terminal.Above-mentioned several situations can all trigger the data connection of release terminal, In a preferred embodiment, the connection of release terminal data includes：IAGW sends resource release request to network side；IAGW is deleted Except the carrying established for the terminal；IAGW notice network sides delete the resource that terminal occupies.In above-mentioned preferred embodiment, when Terminal no longer need the data connection either network side wish terminal release connection when, iAGW can trigger the data to the terminal The release of connection so as to reduce the waste of resource, ensure that the effective and reasonable utilization of Internet resources.

In each preferred embodiment of the present embodiment, above-mentioned data transmission method is suitable for EPS system.

On the basis of the above embodiment, the present embodiment additionally provides a kind of preferred data transmission device, such as Fig. 7 institutes Show, which is located in iAGW, including：Receiving unit 702, for receiving the address request of terminal transmission, wherein, address Request message is used to obtain the address that network side is terminal distribution；Acquiring unit 704, for obtaining network side as terminal distribution Address, and address is sent to terminal；Transmission unit 706, for realizing the data transmission between terminal and network side according to address, Wherein, in network side, respectively each terminal establishes the carrying of data transmission, that is, can be that respectively each terminal is established newly For the carrying that carries out data transmission with terminal.

In the present embodiment, a variety of different types of terminals can obtain the ground that network side is distributed for it by iAGW Location, and the data transmission with network side is realized according to the address.During carrying out data transmission, network side is each newly connects The terminal entered re-establishes a carrying, and the carrying and each terminal are one-to-one relationships, so as to ensure that data transmission Quality.By the above-mentioned means, solve access in the prior art same wireless access network terminal type it is less and cause Radio access network resources waste the technical issues of, realize and different types of terminal accessed by same wireless network by iAGW The technique effect that network carries out data transmission improves the resource utilization of wireless access network.

In a preferred embodiment, as shown in figure 8, data transmission device further includes：Delete unit 802, for When data transmission is terminated between terminal and network side, the carrying established for the terminal is deleted, discharges the resource of terminal occupancy.Upper It states in preferred embodiment, when terminal no longer needs to carry out data transmission with network side, iAGW can trigger the number to the terminal According to the release of connection, so as to reduce the waste of resource, the effective and reasonable utilization of Internet resources ensure that.

Preferably, iAGW in the present embodiment realizes that the specific step that performs of terminal and the data transmission of network side can be as Above-mentioned each preferred embodiment is described, and details are not described herein.

Embodiment 2

The present invention provides a kind of preferred embodiments further to be explained to the present invention, but noticeable It is that the preferred embodiment is intended merely to preferably describe the present invention, does not form and the present invention is improperly limited.

The present embodiment is illustrated by taking iAGW access base stations and EPC as an example, and user is in converged CN in embodiment RAN node perceive data transmission processing method, as shown in figure 9, including：

Step S902, iAGW access network, the flow of iAGW access networks is similar with the process of ordinary terminal access network, Details are not described herein.IAGW completes relevant configuration as base station simultaneously in this course, and after the process, iAGW can be UE provides the service of access network.

Step S904, UE and iAGW foundation eat dishes without rice or wine to connect.

Step S906, UE access network by iAGW and perform authentication flow.

Step S908, UE send dynamic host configuration protocol (Dynamic Host Configuration to iAGW Protocol, referred to as DHCP) request or route requests, in order to obtain IP address.Preferably, UE can be according to uncommon The address style (IPv4 either IPv6 addresses) obtained is hoped to initiate DHCPv4 either DHCPv6 processes or route requests process.

Step S910, iAGW send resource allocation request to base station, and EPS load identifications, PDN types are included in the request (IPv4, IPv6 or IPv4v6) optionally, can also include desired access point name (the Access Point accessed of UE Name, referred to as APN) and UE the parameters such as radio access technology types.

Step S912, base station send resource allocation request to mobile management unit.

Step S914, mobile management unit send to SGW/P-GW and create session request, and the world comprising user is mobile to be used Family identification code (International Mobile Subscriber Identity, referred to as IMSI), wireless access technology class The parameters such as type, tunnel endpoint identifier, APN and bearer context to be created can also optionally include the ginsengs such as PDN types Number.

Step S916, if deploy strategy and charging control (Policy and Charging Control, referred to as PCC), then P-GW also needs to select a PCRF, and initiate IPCAN session establishments to PCRF for UE.PCRF generates QoS plans for UE Summary and charging policy, and return to P-GW.If not disposing PCC, P-GW locally generates above- mentioned information.

Step S918, SGW/P-GW send to mobile management unit and create conversational response.

Step S920, mobile management unit send carrying to base station and establish request, which establishes in request and held comprising EPS The parameters such as the QoS of load, and resource allocation received message is included within the message.Resource allocation received message includes APN, PDN class The parameters such as type, PDN addresses and EPS load identifications.

Step S922, base station send wireless heterogeneous networks (Radio Resource Control, referred to as RRC) to iAGW Connection reconfiguration puts message, and resource allocation received message is included in the message.

Step S924, iAGW put to base station transmission RRC connection reconfigurations and complete message.

Step S926, base station send carrying to mobile management unit and establish response message.

The Non-Access Stratum construction resource allocation of step S928, iAGW complete message, and EPS load identifications are included in the message. Resource allocation completion message is issued base station by iAGW by direct-sending message.

Step S930, base station send resource allocation and complete message to mobile management unit.

Step S932, mobile management unit send modification bearing request message to SGW/P-GW.

Step S934, SGW/P-GW return to modification bearing response message to mobile management unit.

Step S936, the step are optional step：If in above-mentioned steps, P-GW does not distribute IP address for UE, then IAGW can need the IP address type obtained according to UE, be led to using DHCPv4/DHCPv6 processes or route requests/routing Announcement process, to P-GW applied addresses, P-GW distributes IP address for UE.

Step S938, iAGW send DHCP response messages/router advertisement message to UE, wherein, P-GW is carried as UE The IP address of distribution.For UE after the IP address of itself distribution is retrieved as, UE can carry out transmitting uplink data or downlink with P-GW Data transmission.The data transmission procedure is perceived by RAN node, and in the data transmission procedure, base station is needed to access its Terminal creates Data Radio Bearer (Data Radio Bearer, referred to as DRB) one by one.

The present embodiment additionally provides one kind so that UE leaves wireless coverage as an example, and description terminates the processing side of user data transmission Method, as shown in Figure 10, specific steps include：

Step S1002, UE have been set up data connection.

Step S1004, iAGW receive the notice or detect that UE leaves wireless coverage area that UE leaves.

Step S1006, iAGW send resource release request, the resource release request by base station to mobile management unit In include the parameters such as EPS load identifications.

Step S1008, mobile management unit send to SGW/P-GW and delete session request.

Step S1010, if deploying PCC in system, P-GW is initiated after deletion session request is received to PCRF IPCAN session terminations.P-GW releases correspond to the mapping relations between the context of the UE and iAGW and the UE contexts.

Step S1012, SGW/P-GW are answered to mobile management unit and are deleted conversational response.

Step S1014, mobile management unit initiate carrying deactivation request to base station.

Step S1016, base station send RRC connection reconfigurations to iAGW and put message, which puts in message comprising correlation Carrying information, Non-Access Stratum EPS bearer contexts deactivation request message is also carried in the message.

Connection between step S1018, iAGW release and UE.

Step S1020, iAGW discharges the relevant all resources of the UE, and puts completion to base station return RRC connection reconfigurations and disappear Breath.

Step S1022, base station send carrying deactivation response to mobile management unit.

Step S1024, iAGW send EPS bearer contexts deactivation received message by direct-sending message to base station.

Step S1026, base station send EPS bearer contexts deactivation received message to mobile management unit.UE is initiated since then Release caused by user data transmission be terminated.

The present embodiment additionally provide it is a kind of by network discharge UE for come describe terminate user data transmission processing method, As shown in figure 11, specific steps include：

Step S1102, UE have been set up data connection.

The behavior of step S1104, HSS launch position cancellation request or other deletion user contracting datas.

Step S1106, the response of mobile management unit return position cancellation request or other deletion user contracting datas The confirmation message of behavior.

Step S1108, mobile management unit judge UE deregistration according to above-mentioned message, mobile management unit by base station, Resource release request is sent to iAGW, the parameters such as EPS load identifications, while mobile management unit are included in the resource release request It deletes and the relevant information of the UE.

Step S1110, mobile management unit send to SGW/P-GW and delete session request.

Step S1112, if deploying PCC, P-GW initiates IPCAN session terminations to PCRF.P-GW discharges the UE's The mapping relations of context and iAGW and the UE contexts.

Step S1114, SGW/P-GW are returned to mobile management unit and are deleted conversational response.

Step S1116, mobile management unit initiate carrying deactivation request to base station.

Step S1118, base station send RRC connection reconfigurations to iAGW and put message, include correlation in the connection reconfiguration message Carrying information, Non-Access Stratum EPS bearer contexts deactivation request message is also carried in the message.

Connection between step S1120, iAGW release and UE.

Step S1122, iAGW release and the relevant all resources of the UE, and answer RRC connection reconfigurations to base station and put completion Message.

Step S1124, base station send carrying deactivation response to mobile management unit.

Step S1126, iAGW send EPS bearer contexts deactivation received message by direct-sending message to base station.

Step S1128, base station send EPS bearer contexts deactivation received message to mobile management unit.Network is sent out since then User data transmission is terminated caused by the release risen.

It is worth noting that, the content that the invention is not restricted to the embodiments described, terminal is linked by iAGW The scene of UTRAN and GPRS core nets etc., also within the scope of the present invention.

It can be seen from the above description that the present invention realizes following technique effect：

It can realize that UE access to base station and the data transmission method of EPC, realizes a kind of RAN of the core net of fusion The data transmission method of node perceived method.A variety of different types of terminals can obtain what network side was distributed for it by iAGW Address, and the data transmission with network side is realized according to the address.During carrying out data transmission, base station and core net are Each terminal newly accessed establishes one-to-one carrying, so as to ensure that the quality of data transmission.By the above-mentioned means, it solves The terminal type that in the prior art can access wireless access network it is less and caused by wireless access network Internet resources wave It the technical issues of taking realizes and is imitated the technology that different types of terminal access wireless network carries out data transmission by iAGW Fruit improves the resource utilization of Radio Access Network.

Obviously, those skilled in the art should be understood that each module of the above-mentioned present invention or each step can be with general Computing device realize that they can concentrate on single computing device or be distributed in multiple computing devices and be formed Network on, optionally, they can be realized with the program code that computing device can perform, it is thus possible to which they are stored It is performed in the storage device by computing device, and in some cases, it can be to be different from shown in sequence herein performs The step of going out or describing they are either fabricated to each integrated circuit modules respectively or by multiple modules in them or Step is fabricated to single integrated circuit module to realize.It to be combined in this way, the present invention is not limited to any specific hardware and softwares.

The foregoing is only a preferred embodiment of the present invention, is not intended to restrict the invention, for the skill of this field For art personnel, the invention may be variously modified and varied.All within the spirits and principles of the present invention, that is made any repaiies Change, equivalent replacement, improvement etc., should all be included in the protection scope of the present invention.

Claims (14)

1. a kind of data transmission method, which is characterized in that including：

The access gateway iAGW of fusion receives the address request that terminal is sent；

The iAGW obtains network side and is the address of the terminal distribution, and described address is sent to the terminal；

The iAGW realizes the data transmission between the terminal and the network side according to described address, wherein, in the network Side, respectively each terminal establish the carrying of data transmission；

Wherein, the iAGW has the ability for supporting different types of terminal access consolidated network.

2. according to the method described in claim 1, it is characterized in that, the network side is wireless access network and converged CN group Into converged network.

3. according to the method described in claim 1, it is characterized in that, described address request message is dynamic host configuration protocol DHCP request or route requests, after the iAGW receives the address request that terminal is sent, the method further includes：

The iAGW generates resource allocation request according to the DHCP request or route requests, wherein, the resource allocation request It carries：The load identification of carrying of data transmission established for the terminal, grouped data network PDN type, the terminal The radio access technology types of access point name and the terminal；

The resource allocation request is sent to the network side by the iAGW；

The network side responds the resource allocation request, and request is established in generation carrying, and the carrying is established request and is returned To the iAGW.

4. according to the method described in claim 3, it is characterized in that, the iAGW resource allocation request is sent to it is described Network side, including：

The iAGW sends the resource allocation request to base station；

The resource allocation request is sent to the mobile management unit of the network side by the base station.

5. according to the method described in claim 3, it is characterized in that, the iAGW obtains the ground that network side is the terminal distribution Location, including：

The iAGW receives the carrying that the network side returns and establishes request, wherein, the carrying, which is established in request, to be carried State the address that network side is the terminal distribution；

The iAGW is established in request from the carrying and is obtained the address that the network side is the terminal distribution.

6. according to the method described in claim 3, it is characterized in that, the iAGW obtains the ground that network side is the terminal distribution Location, including：

When the carrying that the network side returns, which is established, does not carry the address for the terminal distribution in request, the iAGW is to institute It states network side and sends DHCP request or route requests, wherein, the DHCP request or route requests are used for the network Ask the address that the network side is the terminal distribution in side.

7. method according to claim 5 or 6, which is characterized in that request, packet are established in the network side generation carrying It includes：

The mobile management unit of the network side receives the resource allocation request that the iAGW is sent；

The mobile management unit sends to the packet data gateway P-GW of the network side and creates session request；

The mobile management unit receives the establishment conversational response that the P-GW is returned, wherein, the establishment conversational response carries It is the address of the terminal distribution, evolved packet system EPS carryings to have QoS policy and charge information, the P-GW QoS, access point name APN, grouped data network gateway PDN types, PDN addresses and EPS load identifications；

The mobile management unit establishes request according to the establishment conversational response generation carrying.

8. the method according to the description of claim 7 is characterized in that when the network side deploys strategy and charging control PCC When, the P-GW generates the qos policy and charge information in the following way：

The P-GW selects a policy charging rule functional entity PCRF for the terminal；

The P-GW receives the qos policy and charge information that chosen PCRF is terminal generation.

9. according to the method described in claim 1, it is characterized in that, the iAGW realizes the terminal and institute according to described address After stating the data transmission between network side, further include：

When data transmission is terminated between the terminal and the network side, the iAGW deletes the carrying established for the terminal, release The resource that the terminal occupies.

10. according to the method described in claim 9, it is characterized in that, the iAGW deletes the carrying established for the terminal, release The resource that the terminal occupies, including：

The iAGW receive the terminal leave the network side coverage area notification message or the iAGW detect institute When stating terminal and leaving the network side coverage area, the iAGW sends resource release request to the network side；

The iAGW deletes the carrying established for the terminal；

The iAGW notifies the network side to delete the resource that the terminal occupies.

11. according to the method described in claim 9, it is characterized in that, the iAGW deletes the carrying established for the terminal, release The resource that the terminal occupies, including：

The iAGW receives the instruction information that network side discharges the terminal；

The iAGW discharges the resource of terminal occupancy according to the carrying that the instruction information deletion is that the terminal is established.

12. the method according to any one of claim 1 to 6,9 to 11, which is characterized in that the above method is suitable for EPS System.

13. a kind of data transmission device, which is characterized in that in the access gateway iAGW of fusion, including：

Receiving unit, for receiving the address request of terminal transmission；

Acquiring unit is the address of the terminal distribution, and described address is sent to the terminal for obtaining network side；

Transmission unit, for realizing the data transmission between the terminal and the network side according to described address, wherein, described Network side, respectively each terminal establish the carrying of data transmission；

Wherein, the iAGW has the ability for supporting different types of terminal access consolidated network.

14. device according to claim 13, which is characterized in that further include：

Unit is deleted, for during termination data transmission, deleting and being held for what the terminal was established between the terminal and the network side It carries, discharges the resource of terminal occupancy.