CN103327642A - Data transmitting method and device - Google Patents
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- CN103327642A CN103327642A CN2012100764410A CN201210076441A CN103327642A CN 103327642 A CN103327642 A CN 103327642A CN 2012100764410 A CN2012100764410 A CN 2012100764410A CN 201210076441 A CN201210076441 A CN 201210076441A CN 103327642 A CN103327642 A CN 103327642A
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Abstract
The invention discloses a data transmitting method and device. The data transmitting method includes the steps that an iAGW receives address request information sent by terminals; the iAGW obtains an address which is distributed by a network side for the terminals, and the address is sent to the terminals; the iAGW achieves data transmission between the terminals and the network side according to the address, wherein data transmission bearing for each terminal is built. The data transmitting method and device solves the technical problem that in the prior art, the type of terminals of the same wireless access network is few, and accordingly resources of the wireless access network are wasted. The data transmitting method and device achieves the technical effect that different types of the terminals are accessed to the same wireless network for data transmission through the iAGW, and improves the resource utilization rate of the wireless access network.
Description
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, for the user provides the mobile communication that speed is faster, time delay is lower and more personalized service, simultaneously, reduce operating cost of operator, third generation partner program (3rdGeneration Partnership Project, abbreviating 3GPP as) the standard operation group just is being devoted to the research of evolved packet system (Evolved Packet System abbreviates EPS as).Fig. 1 shows the structural representation of evolution grouping domain system, and as shown in Figure 1, whole EPS system is divided into wireless access network and core net two parts.In core net, comprised home subscriber server (Home Subscriber Server, abbreviate HSS as), Mobility Management Entity (Mobility Management Entity, abbreviate MME as), Serving GPRS Support Node (Serving GPRS SupportNode, abbreviate SGSN as), policy charging rule function (Policyand Charging Rule Function, abbreviate PCRF as), gateway (Serving Gateway, abbreviate S-GW as) and packet data gateway (PDN Gateway abbreviates P-GW as).Describe the each several part function below in detail:
Home subscriber server is the permanent storage place of user contracting data, is positioned at the home network that the user contracts.
Mobility Management Entity, be that user contracting data is at the storage place of current network, be responsible for Non-Access Stratum (Non Access Stratum the abbreviates NAS as) signaling management of terminal to network, the safety verification function of terminal, mobile management, the tracking under user's idle pulley and paging management function and the bearer management of terminal.
Serving GPRS Support Node, be global system for mobile communications (Global System for Mobile Communications, abbreviate GSM as) enhancing data transfer rate GSM evolution (Enhanced Data Rate for GSM Evolution, abbreviate EDGE as), wireless access network (GSM EDGE Radio Access Network, abbreviate GERAN as), universal mobile telecommunications system (Universal Mobile Telecommunications System, abbreviate UMTS as) and land radio access web (UMTS Terrestrial RadioAccess Network, abbreviate UTRAN as) the business support point of user access core network network, similar with Mobility Management Entity on the function, be responsible for user's position and upgrade, functions such as paging management and bearer management.
Gateway is the gateway that core net arrives wireless system, is responsible for terminal to the user plane bearer of core net, the data buffer memory under the terminal idle pulley, function, Lawful Interception and grouped data route and the forwarding capability that network side is initiated service request; Gateway is responsible for adding up the situation that user terminal uses wireless network, and produces the ticket that terminal is used wireless network, sends charging gateway to.
Packet data gateway, it is the gateway of evolution system and this system's external packet data network, it is connected on internet and the packet data network, be responsible for the functions such as Internet protocol (Internet Protocol abbreviates IP as) address assignment, billing function, grouping packet filtering and policy control of terminal.
Policy charging rule functional entity is the server of being responsible for providing charging control, the control of online credit, thresholding control and service quality (Quality of Service abbreviates QoS as) tactful aspect rule in the evolution system.
Wireless access network is to be made up of evolution base station (EvolvedNodeB abbreviates eNodeB as), or base station and 3G radio network controller (Radio Network Controllor abbreviates RNC as) composition.It mainly is responsible for the transmitting-receiving of wireless signal, by air interface and terminal contact, Radio Resource, scheduling of resource and the access control of management air interface.
Above-mentioned Serving GPRS Support Node is the SGSN that upgraded, can support and gateway between the S4 interface, and and mobility management unit between adopt GPRS Tunnel Protocol version 2 (GPRS Tunneling Protocol version 2 abbreviates GTPv2 as) to carry out intercommunication.And packet switching (Packet Switching abbreviates PS as) the territory network architecture and Fig. 1 are different for the SGSN that supports the 3G core net.This moment, SGSN adopted gn interface to link to each other with MME, and GPRS Tunnel Protocol version 1 (GPRS Tunneling Protocol version 1 abbreviates GTPv1 as) adopted in intercommunication.SGSN can not link to each other with gateway, is connected to Gateway GPRS Support Node (Gateway GPRS SupportNode abbreviates GGSN as) by gn interface and directly carries out the packet data network visit.
EPS inserts except supporting above-mentioned 3GPP system, also supports non-3 GPP system to insert, and as shown in Figure 2, wherein, realizes that by the S2a/S2b interface P-GW is as the anchor point between 3GPP and non-3 GPP system with the intercommunication of non-3 GPP system.In the system architecture diagram of EPS, non-3 GPP system inserts and is divided into trustless non-3GPP access and the non-3GPP access of trusted; Wherein, (Evolved Packet Data Gateway's packet data gateway of trustless non-3GPP access need process evolution ePDG) links to each other with P-GW, and the interface between ePDG and P-GW is S2b; The non-3GPP of trusted inserts and can directly be connected with P-GW by the S2a interface, and the S2a interface adopts proxy-mobile IP (Proxy Mobile IP abbreviates PMIP as) agreement to carry out information interaction.
WLAN (wireless local area network) (Wireless LocalAreaNetwork, abbreviate WLAN as) as non-3 GPP access network network trusty (Trusted Non-3GPP IP access Network, abbreviate TNAN as), be used for the streamed data flow, paid close attention to by a lot of operators gradually, and its framework as shown in Figure 2.
In order to take full advantage of Long Term Evolution (Long Term Evolution, abbreviate LTE as) Internet resources, the operator that possesses the EPS network wishes to attract the terminal of more WLAN terminal or other types to insert into, LTE and polytype terminal are merged, thereby can enlarge wireless processing capacity, also can further guarantee the requirement of customer service at QoS, mobility, safety and aspect such as energy-conservation.
At above-mentioned problem, effective solution is not proposed as yet at present.
Summary of the invention
The invention provides a kind of data transmission method and device, insert less with a kind of terminal type of wireless access network and the technical problem wireless access network wasting of resources that causes to solve at least in the prior art.
According to an aspect of the present invention, provide a kind of data transmission method, having comprised: the address request that the iAGW receiving terminal sends; IAGW obtains the address that network side is terminal distribution, and the address is sent to terminal; IAGW wherein, at network side, is respectively the carrying that each terminal is set up transfer of data according to the transfer of data between address realization terminal and network side.
Preferably, network side is the UNE that wireless access network and converged CN are formed.
Preferably, address request is dynamic host configuration protocol DHCP request or route requests; After the address request that the iAGW receiving terminal sends, method also comprises: iAGW generates resource allocation request according to DHCP request or route requests, wherein, resource allocation request carries: bearing identification, grouped data network PDN type, the APN of terminal and the radio access technology types of terminal of the carrying of setting up for terminal; IAGW sends to network side with resource allocation request; The network side resource response distributes request, generates carrying and sets up request, and will carry to set up and ask to return to iAGW.
Preferably, iAGW sends to network side with resource allocation request, comprising: iAGW sends resource allocation request to the base station; The base station sends to resource allocation request the mobile management unit of network side.
Preferably, iAGW obtains the address that network side is terminal distribution, comprising: iAGW receives the carrying foundation request that network side returns, and wherein, carrying is set up in the request and carried the address that network side is terminal distribution; IAGW sets up the request from carrying and obtains the address that network side is terminal distribution.
Preferably, iAGW obtains the address that network side is terminal distribution, comprise: when the address of not carrying in the request to terminal distribution is set up in carrying that network side returns, iAGW sends DHCP request or route requests to network side, wherein, to be used for to network side request network side be the address of terminal distribution for DHCP request or route requests.
Preferably, network side generates carrying and sets up request, comprising: the mobile management unit of network side receives the resource allocation request that iAGW sends; Mobile management unit sends the session request of creating to the P-GW of network side; Mobile management unit receives the establishment conversational response that P-GW returns, wherein, create that conversational response carries qos policy and charge information P-GW is the address of terminal distribution, QOS, APN APN, PDN type, PDN address and the EPS bearing identification of EPS carrying; Mobile management unit generates the request of foundation of carrying according to qos policy and the request of chargeing.
Preferably, when network side had been disposed strategy and charging control PCC, it was that terminal is selected a policy charging rule function PCRF that P-GW generates qos policy and charge information: P-GW in such a way; It is qos policy and the charge information that terminal generates that P-GW receives the PCRF that is selected.
Preferably, iAGW is according to after the transfer of data between address realization terminal and network side, and this data transmission method also comprises: when stopping transfer of data between terminal and network side, the carrying that the iAGW deletion is set up for this terminal discharges the resource that this terminal takies.
Preferably, the carrying that the iAGW deletion is set up for this terminal discharges the resource that this terminal takies, and comprising: iAGW receives the notification message of the coverage of terminal deviated from network side, or iAGW is when detecting terminal deviated from network side coverage, and iAGW sends resource release request to network side; The carrying that the iAGW deletion is set up for this terminal; The resource that iAGW informing network side deletion terminal takies.
Preferably, the carrying that the iAGW deletion is set up for this terminal discharges the resource that this terminal takies, and comprising: iAGW receives the indication information that network side discharges terminal; The iAGW carrying that deletion is set up for this terminal according to indication information discharges the resource that this terminal takies.Preferably, said method is applicable to the EPS system.
According to a further aspect in the invention, provide a kind of data transmission device, be arranged in iAGW, having comprised: receiving element is used for the address request that receiving terminal sends; Acquiring unit is used for obtaining the address that network side is terminal distribution, and the address is sent to terminal; Transmission unit is used for wherein, at network side, being respectively the carrying that each terminal is set up transfer of data according to the transfer of data between address realization terminal and network side.
Preferably, this data transmission device also comprises: delete cells, when being used between terminal and network side, stopping transfer of data, delete the carrying of setting up into this terminal, and discharge the resource that this terminal takies.
In the present invention, the terminal of number of different types can be obtained network side by iAGW and be its addresses distributed, and according to the transfer of data of this address realization with network side.In the process of carrying out transfer of data, network side rebulids a carrying for the terminal of each new access, and this carrying and each terminal are to concern one to one, thereby have guaranteed the quality of transfer of data.By the way, solved and inserted with a kind of terminal type of wireless access network less in the prior art and the technical problem wireless access network wasting of resources that causes, realized by iAGW dissimilar terminals being inserted the technique effect that carries out transfer of data with a kind of wireless network, improved the resource utilization of wireless access network.
Description of drawings
Accompanying drawing described herein is used to provide further understanding of the present invention, constitutes the application's a part, and illustrative examples of the present invention and explanation thereof are used for explaining the present invention, do not constitute improper restriction of the present invention.In the accompanying drawings:
Fig. 1 is the structural representation according to the evolution grouping domain system of correlation technique;
Fig. 2 is the structural representation that inserts the EPS system according to the terminal of correlation technique;
Fig. 3 is the structural representation according to the network architecture of the converged CN of the embodiment of the invention;
Fig. 4 is a kind of preferred flow charts according to the data transmission method of the embodiment of the invention;
Fig. 5 is the another kind of preferred flow charts according to the data transmission method of the embodiment of the invention;
Fig. 6 sets up a kind of preferred flow charts of request according to the generation carrying of the embodiment of the invention;
Fig. 7 is a kind of preferred structure block diagram according to the data transmission device of the embodiment of the invention;
Fig. 8 is the another kind of preferred structure block diagram according to the data transmission device of the embodiment of the invention;
Fig. 9 is the data transmission method interaction diagrams according to the embodiment of the invention;
Figure 10 is a kind of interaction diagrams according to the processing method of the termination user data transmission of the embodiment of the invention;
Figure 11 is the another kind of interaction diagrams according to the processing method of the termination user data transmission of the embodiment of the invention.
Embodiment
Hereinafter will describe the present invention with reference to the accompanying drawings and in conjunction with the embodiments in detail.Need to prove that under the situation of not conflicting, embodiment and the feature among the embodiment among the application can make up mutually.
The objective of the invention is under the framework of 3GPP EPS, propose the data transmission method of the RAN node perceived mode under a kind of converged CN.Terminal inserts in LTE and the EPC network by the IAD (integrated Access Gateway abbreviates iAGW as) that merges, and can't insert the technical problem of converged CN with terminal in the solution correlation technique.
The invention provides a kind of network architecture of preferred converged CN, be placed between terminal and the base station, the interface between terminal and the iAGW is for eating dishes without rice or wine, and the interface between iAGW and the base station is for eating dishes without rice or wine.Terminal just is modeled into the packet-based core networks (Evolved Packet Core abbreviates EPC as) that a 3GPP UE is linked into LTE and evolution.As shown in Figure 3, in this framework, comprising: HSS, mobile management unit, SGW, P-GW, base station, iAGW and terminal.Wherein, terminal comprises that WLANUE and other support the terminal of various possible access technology types.Wherein, following network element has implemented partly to strengthen function on the basis of existing technology:
HSS: CAMEL-Subscription-Information and the authorization data of storage iAGW and terminal.
Mobile management unit: can be MME, or support the S4SGSN of S4 interface, relevant with the type of iAGW and base station.Insert (abbreviating E-UTRAN as) access if iAGW and base station are the UTRAN of evolution, then mobile management unit is MME; Insert if iAGW and base station are UTRAN, then mobile management unit is S4SGSN.This network element also comprises the mapping of finishing iAGW and UE bearer context except the similar functions in the existing framework.
P-GW: with function class in the existing framework seemingly, and be iAGW and UE service simultaneously, and finish the bearer context mapping relations of iAGW and UE.
IAGW: provide access for dissimilar terminals on the one hand, on the other hand as the UE access network.Finish self context and the contextual mapping of UE, and the contextual maintenance of UE.
Below in conjunction with the drawings and specific embodiments technical scheme of the present invention is described in further detail, can be implemented so that those skilled in the art can better understand the present invention also, but illustrated embodiment is not as a limitation of the invention.
Embodiment 1
The invention provides a kind of preferred data transmission method, as shown in Figure 4, this method comprises:
The address request that the S402:iAGW receiving terminal sends;
S404:iAGW obtains the address that network side is terminal distribution, and the address is sent to terminal;
S406:iAGW wherein, at network side, is respectively the carrying that each terminal is set up transfer of data according to the transfer of data between address realization terminal and network side.
In the present embodiment, the terminal of number of different types can be obtained network side by iAGW and be its addresses distributed, and according to the transfer of data of this address realization with network side.In the process of carrying out transfer of data, network side rebulids a carrying for the terminal of each new access, and this carrying and each terminal are to concern one to one, thereby have guaranteed the quality of transfer of data.By the way, solved and inserted with a kind of terminal type of wireless access network less in the prior art and the technical problem wireless access network wasting of resources that causes, realized by iAGW dissimilar terminals being inserted the technique effect that carries out transfer of data with a kind of wireless network, improved the resource utilization of wireless access network.
In each preferred implementation of present embodiment, network side is the UNE that wireless access network and converged CN are formed, thereby makes terminal to insert in the UNE by iAGW, realizes effective utilization of UNE bandwidth resources.
In a preferred implementation, the address request that terminal sends is according to the type of terminal and network and fixed, for example, when terminal was the WLAN terminal, address request was DHCP (Dynamic Host Configuration Protocol abbreviates DHCP as) request or route requests, under this scene, after the address request that the iAGW receiving terminal sends, as shown in Figure 5, this data transmission method also comprises:
S502:iAGW generates resource allocation request according to DHCP request or route requests, wherein, resource allocation request carries: bearing identification, grouped data network PDN type, the APN of terminal and the radio access technology types of terminal of the carrying of setting up for terminal;
S504:iAGW sends to network side with resource allocation request;
S506:iAGW receives the resource distribution of network side and accepts message.
IAGW sends to resource allocation request the mobile management unit of network side by the base station.
IAGW can obtain the address that network side is terminal distribution in the following manner:
1) when network side will be carried in the message that network side issues for the address of terminal distribution, iAGW can directly obtain from the message that network side issues.Network side iAGW receives the carrying foundation request that network side returns, and wherein, carrying is set up in the request and carried the address that network side is terminal distribution; IAGW sets up the request from carrying and obtains the address that network side is terminal distribution.
When 2) address into terminal distribution was not carried in the carrying request of returning when network side, iAGW sent DHCP request or route requests to described network side, and this request is for being the address of terminal distribution to the network side request, and this address is the IP address.
In above-mentioned preferred implementation, several modes that are retrieved as the address of terminal distribution are provided, thereby have realized the flexible access of terminal to UNE.
A plurality of network element associated treatment are arranged in the network side, thereby realize the access to terminal, the network element that mainly comprises has: mobile management unit and P-GW.In a preferred implementation, network side can generate carrying by mode as shown in Figure 6 and set up request, and concrete steps comprise:
S602: the mobile management unit of network side receives the resource allocation request that iAGW sends;
S604: mobile management unit sends the session request of creating to the P-GW of network side;
S606: mobile management unit receives the establishment conversational response that P-GW generates, and wherein, this establishment conversational response carries qos policy and the charge information that P-GW transmits.Create conversational response and also carry the address that P-GW is terminal distribution, QOS, APN, PDN type, PDN address and the EPS bearing identification of EPS carrying;
S608: mobile management unit generates carrying foundation request according to creating conversational response.
In above-mentioned preferred implementation, the resource allocation request that each network element of network side sends in response to iAGW generates carrying and sets up request, to realize the terminal data establishment of connection, has increased the network side bandwidth utilization.
When having disposed PCC in the network, if generate qos policy and charge information, PGW need select a PCRF for terminal; Generate qos policy and charge information and qos policy and charging policy are sent to PGW by the PCRF that selects.
After terminal had been set up the data connection, if stop transfer of data between terminal and network side, iAGW can delete the carrying of setting up into this terminal, discharges the resource that this terminal takies.Yet discharge the reason that terminal data connects may be: iAGW receives the notification message of the coverage of terminal deviated from network side, or iAGW detects terminal deviated from network side coverage, or iAGW receives the indication information that network side discharges terminal.Above-mentioned several situation all can trigger the data that discharge terminal and connect, and in a preferred implementation, discharge the terminal data connection and comprise: iAGW sends resource release request to network side; The carrying that the iAGW deletion is set up for this terminal; The resource that iAGW informing network side deletion terminal takies.In above-mentioned preferred implementation, when terminal no longer needs this data connection or network side to wish that terminal discharges connection, iAGW can trigger the release to the data connection of this terminal, thereby has reduced the waste of resource, has guaranteed the utilization that Internet resources are effective and reasonable.
In each preferred implementation of present embodiment, above-mentioned data transmission method is applicable to the EPS system.
On the basis of above-mentioned execution mode, present embodiment also provides a kind of preferred data transmission device, as shown in Figure 7, this device is arranged in iAGW, comprise: receiving element 702, be used for the address request that receiving terminal sends, wherein, address request is used for obtaining the address that network side is terminal distribution; Acquiring unit 704 is used for obtaining the address that network side is terminal distribution, and the address is sent to terminal; Transmission unit 706 is used for according to the transfer of data between address realization terminal and network side, wherein, at network side, being respectively each terminal and setting up the carrying of transfer of data, that is, can be to be respectively each terminal to set up new being used for and carry out the carrying of transfer of data with terminal.
In the present embodiment, the terminal of number of different types can be obtained network side by iAGW and be its addresses distributed, and according to the transfer of data of this address realization with network side.In the process of carrying out transfer of data, network side rebulids a carrying for the terminal of each new access, and this carrying and each terminal are to concern one to one, thereby have guaranteed the quality of transfer of data.By the way, solved and inserted with a kind of terminal type of wireless access network less in the prior art and the technical problem wireless access network wasting of resources that causes, realized by iAGW dissimilar terminals being inserted the technique effect that carries out transfer of data with a kind of wireless network, improved the resource utilization of wireless access network.
In a preferred implementation, as shown in Figure 8, data transmission device also comprises: delete cells 802, when being used between terminal and network side, stopping transfer of data, delete the carrying of setting up into this terminal, and discharge the resource that this terminal takies.In above-mentioned preferred implementation, when terminal no longer needed to carry out transfer of data with network side, iAGW can trigger the release that the data to this terminal connect, thereby had reduced the waste of resource, had guaranteed the utilization that Internet resources are effective and reasonable.
Preferably, the iAGW in the present embodiment realizes that the concrete execution in step of the transfer of data of terminal and network side can be described as above-mentioned each preferred implementation, does not repeat them here.
Embodiment 2
The invention provides a kind of preferred embodiment and come further the present invention to be made an explanation, but it should be noted that the preferred embodiment just limits the present invention improperly in order better to describe the present invention, not constitute.
Present embodiment is that example describes with iAGW access base station and EPC, and the user as shown in Figure 9, comprising in the processing method of the transfer of data of the RAN of converged CN node perceived in giving embodiment:
Step S902, the iAGW access network, the process of the flow process of iAGW access network and ordinary terminal access network is similar, does not repeat them here.IAGW finishes the relevant configuration as the base station in this course simultaneously, and after this process, iAGW can provide the service of access network for UE.
Step S904, UE set up with iAGW and eat dishes without rice or wine to be connected.
Step S906, UE carries out the authentication flow process by the iAGW access network.
Step S908, UE sends DHCP (Dynamic Host Configuration Protocol abbreviates DHCP as) request or route requests to iAGW, and purpose is in order to obtain the IP address.Preferably, the address style (IPv4 or IPv6 address) that UE can obtain according to hope is initiated DHCPv4 or DHCPv6 process, perhaps route requests process.
Step S910, iAGW sends resource allocation request to the base station, comprise the EPS bearing identification in this request, PDN type (IPv4, IPv6 or IPv4v6), alternatively, can also comprise the APN (Access Point Name abbreviates APN as) of the desired access of UE and the parameters such as radio access technology types of UE.
Step S912, the base station sends resource allocation request to mobile management unit.
Step S914, mobile management unit sends the session request of creating to SGW/P-GW, international mobile subscriber identity (the International Mobile Subscriber Identity that comprises the user, abbreviate IMSI as), radio access technology types, tunnel endpoint identifier, APN and parameters such as bearer context to be created, can also comprise parameters such as PDN type alternatively.
Step S916, if disposed strategy and the control (Policy and Charging Control abbreviates PCC as) of chargeing, then P-GW also needs for UE selects a PCRF, and initiates the IPCAN session to PCRF and set up.PCRF is that UE generates qos policy and charging policy, and returns to P-GW.If do not dispose PCC, then P-GW this locality 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 and set up request to the base station, the parameters such as QoS that comprise the EPS carrying in the request are set up in this carrying, and comprise the resource distribution accept message in this message.The resource distribution is accepted message and is comprised parameters such as APN, PDN type, PDN address and EPS bearing identification.
Step S922, the base station sends Radio Resource control (Radio Resource Control abbreviates RRC as) to iAGW and connects reconfiguration message, comprises the resource distribution in this message and accepts message.
Step S924, iAGW reshuffle to base station transmission RRC connection and finish message.
Step S926, the base station sends carrying to mobile management unit and sets up response message.
Step S928, the Non-Access Stratum structure resource of iAGW has assigned message, comprises the EPS bearing identification in this message.IAGW has assigned message with resource and has issued the base station by direct-sending message.
Step S930, the base station sends resource and has assigned message to mobile management unit.
Step S932, mobile management unit send to SGW/P-GW and revise bearing request message.
Step S934, SGW/P-GW returns the modification bearing response message to mobile management unit.
Step S936, this step is optional step: if in above-mentioned steps, P-GW is not UE distributing IP address, the iAGW IP address class type that can obtain according to the UE needs then, use the DHCPv4/DHCPv6 process, perhaps route requests/advertising of route process, to the P-GW applied address, P-GW is UE distributing IP address.
Step S938, iAGW sends DHCP response message/router advertisement message to UE, and wherein, carrying P-GW is the UE IP address allocated.UE is after being retrieved as self IP address allocated, and UE can carry out transmitting uplink data or downlink data transmission with P-GW.This data transmission procedure is the perception of RAN node institute, and in this data transmission procedure, Data Radio Bearer (Data Radio Bearer abbreviates DRB as) need be created one by one for the terminal that inserts it in the base station.
Present embodiment provides also that a kind of to leave wireless coverage with UE be example, describes the processing method that stops user data transmission, and as shown in figure 10, concrete steps comprise:
Step S1002, UE have set up the data connection.
Step S1004, iAGW receive the notice that UE leaves, and perhaps detect UE and leave wireless coverage area.
Step S1006, iAGW send resource release request by the base station to mobile management unit, include parameters such as EPS bearing identification in this resource release request.
Step S1008, mobile management unit sends deletion session request to SGW/P-GW.
Step S1010, if disposed PCC in the system, then P-GW initiates IPCAN session termination to PCRF after receiving deletion session request.P-GW discharges the context corresponding to this UE, and the mapping relations between iAGW and this UE context.
Step S1012, SGW/P-GW answers the deletion conversational response to mobile management unit.
Step S1014, mobile management unit initiate carrying deactivation request to the base station.
Step S1016, the base station sends RRC to iAGW and connects reconfiguration message, comprises relevant beared information in this connection reconfiguration message, has also carried Non-Access Stratum EPS bearer context deactivation request message in this message.
Step S1018, the connection between iAGW release and the UE.
Step S1020, iAGW discharge all relevant resources of this UE, and return RRC to the base station and connect to reshuffle and finish message.
Step S1022, the base station sends carrying deactivation response to mobile management unit.
Step S1024, iAGW send the deactivation of EPS bearer context and accept message by direct-sending message to the base station.
Step S1026, the base station sends the deactivation of EPS bearer context to mobile management unit and accepts message.The release initiated of UE and the user data transmission that causes is terminated since then.
It is that example is described the processing method that stops user data transmission with network release UE that present embodiment also provides a kind of, and as shown in figure 11, concrete steps comprise:
Step S1102, UE have set up the data connection.
Step S1104, HSS initiates the canceling position request, or the behavior of other deletion user contracting datas.
Step S1106, mobile management unit home position cancellation request response, perhaps the affirmation message of the behavior of other deletion user contracting datas.
Step S1108, mobile management unit is judged UE deregistration according to above-mentioned message, and mobile management unit sends resource release request by the base station to iAGW, comprise parameters such as EPS bearing identification in this resource release request, the information relevant with this UE of mobile management unit deletion simultaneously.
Step S1110, mobile management unit sends deletion session request to SGW/P-GW.
Step S1112, if disposed PCC, then P-GW initiates IPCAN session termination to PCRF.P-GW discharges the context of this UE, and iAGW and the contextual mapping relations of this UE.
Step S1114, SGW/P-GW returns the deletion conversational response to mobile management unit.
Step S1116, mobile management unit initiate carrying deactivation request to the base station.
Step S1118, the base station sends RRC to iAGW and connects reconfiguration message, includes relevant beared information in this connection reallocation message, also carries Non-Access Stratum EPS bearer context deactivation request message in this message.
Step S1120, the connection between iAGW release and the UE.
Step S1122, iAGW discharge all resources relevant with this UE, and reshuffle to base station answer RRC connection and to finish message.
Step S1124, the base station sends carrying deactivation response to mobile management unit.
Step S1126, iAGW send the deactivation of EPS bearer context and accept message by direct-sending message to the base station.
Step S1128, the base station sends the deactivation of EPS bearer context to mobile management unit and accepts message.The release initiated of network and the user data transmission that causes is terminated since then.
It should be noted that the content that the invention is not restricted to the embodiments described, be linked into the scene of UTRAN and GPRS core net etc. for terminal by iAGW, also within protection range of the present invention.
As can be seen from the above description, the present invention has realized following technique effect:
Can realize that UE is linked into the data transmission method of base station and EPC, realize a kind of data transmission method of RAN node perceived method of core net of fusion.The terminal of number of different types can be obtained network side by iAGW and be its addresses distributed, and according to the transfer of data of this address realization with network side.In the process of carrying out transfer of data, base station and core net are that the terminal of each new access is set up carrying one to one, thereby have guaranteed the quality of transfer of data.By the way, solved the technical problem of the waste of network resources of the less and wireless access network that causes of the terminal type that can insert wireless access network in the prior art, realized by iAGW dissimilar terminal access of radio network being carried out the technique effect of transfer of data, improved the resource utilization of Radio Access Network.
Obviously, those skilled in the art should be understood that, above-mentioned each module of the present invention or each step can realize with the general calculation device, they can concentrate on the single calculation element, perhaps be distributed on the network that a plurality of calculation elements form, alternatively, they can be realized with the executable program code of calculation element, thereby, they can be stored in the storage device and be carried out by calculation element, and in some cases, can carry out step shown or that describe with the order that is different from herein, perhaps they are made into each integrated circuit modules respectively, perhaps a plurality of modules in them or step are made into the single integrated circuit module and realize.Like this, the present invention is not restricted to any specific hardware and software combination.
The above is the preferred embodiments of the present invention only, is not limited to the present invention, and for a person skilled in the art, the present invention can have various changes and variation.Within the spirit and principles in the present invention all, any modification of doing, be equal to replacement, improvement etc., all should be included within protection scope of the present invention.
Claims (14)
1. a data transmission method is characterized in that, comprising:
The address request that the IAD iAGW receiving terminal that merges sends;
Described iAGW obtains the address that network side is described terminal distribution, and described address is sent to described terminal;
Described iAGW realizes transfer of data between described terminal and described network side wherein, at described network side, being respectively the carrying that each terminal is set up transfer of data according to described address.
2. method according to claim 1 is characterized in that, described network side is the UNE that wireless access network and converged CN are formed.
3. method according to claim 1 is characterized in that, described address request is dynamic host configuration protocol DHCP request or route requests, and after the address request that described iAGW receiving terminal sends, described method also comprises:
Described iAGW generates resource allocation request according to described DHCP request or route requests, wherein, described resource allocation request carries: bearing identification, grouped data network PDN type, the APN of described terminal and the radio access technology types of described terminal of the carrying of setting up for described terminal;
Described iAGW sends to described network side with described resource allocation request;
Described network side responds described resource allocation request, generates carrying and sets up request, and the described carrying request of setting up is returned to described iAGW.
4. method according to claim 3 is characterized in that, described iAGW sends to described network side with described resource allocation request, comprising:
Described iAGW sends described resource allocation request to the base station;
Described base station sends to described resource allocation request the mobile management unit of described network side.
5. method according to claim 3 is characterized in that, described iAGW obtains the address that network side is described terminal distribution, comprising:
Described iAGW receives the carrying foundation request that described network side returns, and wherein, described carrying is set up in the request and carried the address that described network side is described terminal distribution;
Described iAGW sets up the request from described carrying and obtains the address that described network side is described terminal distribution.
6. method according to claim 3 is characterized in that, described iAGW obtains the address that network side is described terminal distribution, comprising:
When the address of not carrying in the request to described terminal distribution is set up in carrying that described network side returns, described iAGW sends DHCP request or route requests to described network side, wherein, to be used for to the described network side of described network side request be the address of described terminal distribution for described DHCP request or route requests.
7. according to claim 5 or 6 described methods, it is characterized in that described network side generates described carrying and sets up request, comprising:
The mobile management unit of described network side receives the described resource allocation request that described iAGW sends;
Described mobile management unit sends the session request of creating to the packet data gateway P-GW of described network side;
Described mobile management unit receives the establishment conversational response that described P-GW returns, wherein, described establishment conversational response carries the address that QoS policy and charge information, described P-GW are described terminal distribution, QoS, APN APN, grouped data network gateway PDN type, PDN address and the EPS bearing identification of evolved packet system EPS carrying;
Described mobile management unit generates carrying according to described establishment conversational response and sets up request.
8. method according to claim 7 is characterized in that, when described network side had been disposed strategy and charging control PCC, described P-GW generated described qos policy and charge information in such a way:
Described P-GW is that described terminal is selected a policy charging rule functional entity PCRF;
It is qos policy and the charge information that described terminal generates that described P-GW receives the PCRF that is selected.
9. method according to claim 1 is characterized in that, described iAGW realizes according to described address also comprising after the transfer of data between described terminal and described network side:
When stopping transfer of data between described terminal and described network side, the carrying that described iAGW deletion is set up for this terminal discharges the resource that this terminal takies.
10. method according to claim 9 is characterized in that, the carrying that described iAGW deletion is set up for this terminal discharges the resource that this terminal takies, and comprising:
Described iAGW receives that described terminal leaves the notification message of the coverage of described network side, or described iAGW is when detecting described terminal and leaving described network side coverage, and described iAGW sends resource release request to described network side;
The carrying that described iAGW deletion is set up for this terminal;
Described iAGW notifies described network side to delete the resource that described terminal takies.
11. method according to claim 9 is characterized in that, the carrying that described iAGW deletion is set up for this terminal discharges the resource that this terminal takies, and comprising:
Described iAGW receives the indication information that network side discharges described terminal;
The carrying that described iAGW sets up for this terminal according to described indication information deletion discharges the resource that this terminal takies.
12. according to each described method in the claim 1 to 6,9 to 11, it is characterized in that said method is applicable to the EPS system.
13. a data transmission device is characterized in that, is arranged in the IAD iAGW of fusion, comprising:
Receiving element is used for the address request that receiving terminal sends;
Acquiring unit is used for obtaining the address that network side is described terminal distribution, and described address is sent to described terminal;
Transmission unit, the transfer of data for realizing according to described address between described terminal and described network side wherein, at described network side, is respectively the carrying that each terminal is set up transfer of data.
14. device according to claim 13 is characterized in that, also comprises:
Delete cells when being used for stopping transfer of data between described terminal and described network side, is deleted the carrying of setting up into this terminal, discharges the resource that this terminal takies.
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| CN201210076441.0A CN103327642B (en) | 2012-03-21 | 2012-03-21 | Data transmission method and device |
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| CN103327642B (en) | 2018-06-15 |
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