CN101572861B - Method, device and system for context management based on Sl uniform interface - Google Patents
Method, device and system for context management based on Sl uniform interface Download PDFInfo
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Abstract
The invention discloses a PDP context based on the condition that an Iu-PS interface of a 3G network is unified to an Sl interface of an LTE/SAE network, and a management method for loading the context. The method comprises the steps: establishing a connection relationship of NSAPI, TI and EPS BearerId by a wireless access network controller, informing a mobility management entity of the connection relationship, inducing the Sl interface of the SAE network by UTRAN of the 3G network to further induce a certain characteristic of the SAE network so as to enhance the performance of the original 3G network and enable the SAE network to be compatible with the UTRAN of the 3G network to promote the evolution and the integration of the networks. In addition, the invention also discloses the wireless access network controller and a system.
Description
Technical field
The present invention relates to communication technical field, relate in particular to management method, the Apparatus and system of a kind of PDP Context based on the S1 unified interface and bearer context.
Background technology
The development of mobile communication has formed the various wireless communication system, such as second generation mobile communication system (2G): global system for mobile communications (GSM, Global System for Mobile Communication), General Packet Radio System (GPRS, General Packet Radio System), strengthen the professional (EDGE of data rate GSM, Enhanced Data rates for GSM service), code division multiple access (CDMA, CodeDivision Multiple Access); 3-G (Generation Three mobile communication system) (3G): unified mobile communication system (UMTS, Universal Mobile Telecommunications System, be also referred to as Wideband Code Division Multiple Access (WCDMA) (WCDMA, Wideband CDMA)), Time Division-Synchronous Code Division Multiple Access (TD-SCDMA, TimeDivision-Synchronous CDMA), next generation mobile communication system: Long Term Evolution (LTE, LongTerm Evolution).The maximum difference of various wireless communication system standards is generally in radio open (air interface) technology, network and radio open technology have the standards system Matching Relationship, wireless access network (the RAN of different system, Radio Access Network) and core net (CN, Core Network) certain difference is also arranged on network configuration, protocol stack.
Travelling carriage (MS, Mobile Station) is the functional unit that application interface and service are provided to the user, is responsible for the communication function of another corresponding with network terminal in wave point entity, and its function and total protocol structure are all followed standard.Travelling carriage generally can not access the system of various criterion.
Mobile communications network will to next generation communication system evolution, to support the new business demand, satisfy the needs of data service fast development.According to the relation between the standards system, the network evolution process has multiple route: 2G to 3G, next generation mobile communication system evolution, such as GPRS (EDGE) → WCDMA (HSPA) → LTE; Perhaps stride across 3G, 2G directly evolves to next generation mobile communication system, such as GPRS (EDGE) → LTE; Perhaps in the same generation mobile communication system, some technology is improved, improved performance, such as GPRS → EDGE, GPRS (EDGE) → GERAN (GSM EDGE wireless access network).
In the network evolution process, need to consider back compatible, smooth evolution, and then save cost.3G network can be to the base station sub-system (BSS of 2G, Base Station System) carries out compatibility, and at Long Term Evolution project/System Architecture Evolution (LTE/SAE, Long Time Evolution/System ArchitectureEvolution) then there is not consideration in the network to the universal mobile telecommunications system land radio access web (UTRAN of 3G, Universal Mobile Telecommunications System Territorial RadioAccess Network) carries out compatibility, as shown in Figure 1.The SAE network does not provide the compatible interface mutually to UTRAN, the intercommunication of 3G network and LTE/SAE network is by Serving GPRS Support Node (SGSN, Serving GPRS Support Node) and Mobility Management Entity (MME, Mobile ManagementEntity) interface between is realized, like this, just can not well protect operator's investment for original 3G Radio Access Network; Can not save operator's investment for the LTE/SAE network, thereby cause the network upgrade cost compare large.
Therefore, in order to reduce investment outlay, LTE/SAE needs and can carry out compatibility to the UTRAN of 3G, and will realize compatibility, and the below is LTE/SAE carries out compatibility to the UTRAN of 3G a kind of implementation:
1) MME goes out S1-MME interface to RNC;
2) RNC remains unchanged to interface, signaling and functional sequence between the UE;
3) RNC carries out the adaptive of S1-MME interface, signaling and functional sequence.
In realizing process of the present invention, the inventor finds through research, because Iu chain of command interface protocol stack architecture in the 3G network as shown in Figure 2, and there is certain difference between the S1 chain of command interface protocol stack architecture of LTE/SAE network as shown in Figure 3, one of them main difference is Non-Access Stratum (NAS, Non Access Stratum) difference of agreement, distribution and the administrative mechanism of the PDP Context correlated identities of 3G, be shaped with very big-difference with distribution and the supervisor of carrying correlated identities among the LTE/SAE, therefore, improve the performance of original 3G network and make the SAE Web-compatible can have certain difficulty to the 3G wireless access network.
Summary of the invention
The embodiment of the invention provides a kind of Iu-PS interface based on 3G network to the unified PDP Context of the S1 interface of LTE/SAE network and management method, radio network controller and the system of bearer context.
The embodiment of the invention provides following technical scheme:
The embodiment of the invention provides a kind of context management method based on the S1 unified interface, comprising:
Radio network controller is set up the incidence relation of NSAPI, TI and EPS Bearer Id;
Radio network controller is with described incidence relation notice Mobility Management Entity.
The embodiment of the invention also provides a kind of radio network controller, comprising:
Set up the unit, be used for setting up the incidence relation of NSAPI, TI and EPS Bearer Id;
Transmitting element is used for the described incidence relation of setting up the unit of setting up is sent to Mobility Management Entity.
In addition, the embodiment of the invention also provides a kind of system, comprising:
Radio network controller comprises the unit of setting up be used to the incidence relation of setting up NSAPI, TI and EPS Bearer Id, and described incidence relation is sent to the transmitting element of Mobility Management Entity;
Mobility Management Entity is used for preserving NSAPI, the TI of described radio network controller transmission and the incidence relation of EPSBearer Id.
The embodiment of the invention provides based on the Iu-PS interface of 3G network to the unified PDP Context of the S1 interface of LTE/SAE network and management method, radio network controller and the system of bearer context, can introduce by the UTRAN of 3G network the S1 interface of SAE network, and then introduce the characteristic of some SAE networks, thereby improve the performance of original 3G network and can make the SAE Web-compatible to the UTRAN of 3G network, to promote evolution and the fusion of network.The investment of operator can be saved and protect to the embodiment of the invention, easy to implement, very little on the realization impact of existing standard and network element.
Description of drawings
Fig. 1 is prior art LTE/SAE network architecture diagram;
Fig. 2 is the Iu chain of command protocol stack of the interface structure chart of prior art 3G network;
Fig. 3 is the S1 chain of command protocol stack of the interface structure chart of prior art LTE/SAE network;
Fig. 4 is that embodiment of the invention RNC goes out the S1 interface to the chain of command protocol stack structure figure of MME;
Fig. 5 A, B are the structure charts of embodiment of the invention RNC;
Fig. 6 is the flow chart of the PDP context activation of the embodiment of the invention one UE initiation;
Fig. 7 is the flow chart of the PDP Context secondary activating of the embodiment of the invention two UE initiation;
Fig. 8 is the flow chart of the PDP Context secondary activating of the embodiment of the invention three network requests;
Fig. 9 is the flow chart of the PDP context deactivation of the embodiment of the invention four UE initiation;
Figure 10 is the flow chart of the PDP context deactivation of the embodiment of the invention five network sides initiation;
Figure 11 is the flow chart of the embodiment of the invention six Routing Area Updates;
Figure 12 is the flow chart of the embodiment of the invention seven service request.
Embodiment
The embodiment of the invention provides a kind of Iu-PS interface based on 3G network to the unified PDP Context of the S1 interface of LTE/SAE network and management method, radio network controller and the system of bearer context, is used for solving the SAE Web-compatible to the UTRAN of 3G network.For making purpose of the present invention, technical scheme and advantage clearer, the embodiment that develops simultaneously with reference to the accompanying drawings, the present invention is described in more detail.
As shown in Figure 4, the RNC that provides for the embodiment of the invention goes out the S1 interface to the chain of command protocol stack structure figure of MME, and what the embodiment of the invention provided just is based on structure shown in Figure 4 based on the Iu-PS interface of 3G network to the unified PDP Context of the S1 interface of LTE/SAE network and the management method of bearer context.The PDP context activation flow process is a signaling process in the 3G network, and its main purpose is to set up user's face tunnel of data input and data output between UE and the network.Because may there be a plurality of PDP Contexts, so distribution and the administrative mechanism of PDP Context or carrying correlated identities need to be arranged, and the distribution of correlated identities and management are processing procedures in the PDP context activation flow process, described correlated identities comprises: Network layer Service Access Point Identifier (NSAPI, Network layer Service Access PointIdentifier), Transaction Identifier (TI, Transaction Identifier), and the grouping system bearing identification of evolution (EPS Bearer Id, Evolved Packet System Bearer Identifier) etc.
The embodiment of the invention provide based on the Iu-PS interface of 3G network in the management method of the unified PDP Context of the S1 interface of LTE/SAE network and bearer context, in PDP context activation or carrying foundation, from the PDP context activation request message that receives, obtain Network layer Service Access Point Identifier (NSAPI by the RNC in the 3G network, Network layer Service Access PointIdentifier) and Transaction Identifier (TI, Transaction Identifier) parameter information, and set up grouping system bearing identification (EPS Bearer Id, the EvolvedPacket System Bearer Identifier) parameter information that obtains evolution the request message from the carrying that receives; Perhaps RNC preserves EPS Bearer Id parameter information after request message is set up in the carrying that receives the core net transmission, and sends request PDP context secondary activating message to terminal; RNC replaces core net distribution T I parameter information, the PDP Context secondary activating request message that receiving terminal sends, and from this message, preserve the NSAPI parameter information.RNC sets up the incidence relation between NSAPI, TI and the EPS Bearer Id three; And described incidence relation sent to LTE/SAE network of network side by PDP Context container parameters (PDP Context Container), for example MME backs up.
In PDP context deactivation or load bearing deactivation, the incidence relation of RNC deletion corresponding NSAPI, TI and EPS Bearer Id in the PDP ContextContainer that preserves, and amended PDP Context Container is sent to network side again preserve.When Business Processing needed, RNC can obtain the PDP Context of preservation and the incidence relation of bearer context from network side.In UE or network side initiation business, RNC can find according to the incidence relation of the PDP Context of preserving and bearer context bearer context information or the PDP Context information of map network, thereby can carry out adaptive and relevant treatment to flow process and parameter, thereby solve the SAE Web-compatible to the UTRAN of 3G network.
The management method based on PDP Context and the bearer context of S1 unified interface that the embodiment of the invention provides comprises being specially the process of setting up of the incidence relation of PDP Context and bearer context:
RNC sets up the incidence relation of NSAPI, TI and EPS Bearer Id, and described incidence relation is saved among the PDP Context Container; Described PDP Context Container is preserved copy to MME.
Described PDP Context and the management method of the bearer context delete procedure that also comprises the incidence relation of PDP Context and bearer context based on the S1 unified interface is specially:
RNC receives the PDP context deactivation request message of UE or network initiation, finds corresponding EPS Bearer Id parameter information according to the TI parameter information in the described message from described incidence relation, and sends the releasing bearing resource request message to MME; Notify RNC behind the MME releasing bearing, RNC deletes the incidence relation corresponding with described TI and EPS Bearer Id in described PDP Context Container, and the PDP Context Container after will upgrading sends to the MME preservation.
Described PDP Context and the management method of the bearer context acquisition process that also comprises the incidence relation of PDP Context and bearer context based on the S1 unified interface is specially:
In Routing Area Update or UE transmission service request, if there is not the incidence relation of NSAPI, TI and EPS Bearer Id among the RNC, RNC can be by sending the PDP Context request message to MME, the incidence relation of acquisition request NSAPI, TI and EPS Bearer Id.
The embodiment of the invention also provides a kind of RNC, and its structure comprises shown in Fig. 5 A: set up unit 500a, transmitting element 501a;
The described unit 500a that sets up is for the incidence relation of setting up NSAPI, TI and EPS Bearer Id;
Described transmitting element 501a, the PDN connection request message after being used for changing or request bearing resource assignment messages, and described incidence relation is sent to MME.
Described RNC can further include: receiving element 502, acquiring unit 503, and converting unit 504; Wherein:
Described receiving element 502 is used for PDP context activation request message or PDP Context secondary activating request message that receiving terminal sends, and request message is set up in the carrying that MME sends;
Described acquiring unit 503, be used for obtaining NSAPI and TI parameter information from PDP context activation request message or PDP Context secondary activating request message that described receiving element 502 receives, and set up from the carrying that described receiving element 502 receives and to obtain EPS Bearer Id parameter information the request message;
Described converting unit 504, be used for the PDP context activation request message that described receiving element 502 receives is converted to PDN connection request message,, or described PDP Context secondary activating request message is converted to request bearing resource assignment messages, and offer described transmitting element 501a.
The embodiment of the invention also provides another kind of RNC, and its structure comprises shown in Fig. 5 B: set up unit 500b, transmitting element 501b;
Described transmitting element 501b is used for sending request PDP Context secondary activating message to UE.
Wherein, described transmitting element 501b is used for described incidence relation is sent to MME by PDP ContextContainer parameter.
Described RNC can further include: receiving element 512, acquiring unit 513, and allocation units 514; Wherein:
Described receiving element 512 be used for to receive carrying that MME sends and sets up and trigger described transmitting element 501b behind the request message and send request PDP Context secondary activating message to UE, and receives the PDP Context secondary activating request message that UE sends;
Described acquiring unit 513, be used for setting up request message from the carrying that described receiving element 512 receives and obtain EPS Bearer Id parameter information, and from the PDP Context secondary activating request message that described receiving element 512 receives, obtain the NSAPI parameter information;
Described allocation units 514 are used for distribution T I parameter information after described receiving element 512 receives carrying to set up request message.
Can also comprise such as Fig. 5 A or the described RNC of 5B: search unit 505 and delete cells 506, wherein:
Described receiving element 502,512 also is used for receiving the PDP context deactivation request message, or the deexcitation bearing request message of MME transmission;
The described unit 505 of searching, be used for from described incidence relation, finding corresponding EPS BearerId parameter information according to the TI parameter information of described receiving element 502, the 512 PDP context deactivation request messages that receive, or from described incidence relation, find corresponding TI parameter information according to the EPS Bearer Id parameter information in described receiving element 502, the 512 deexcitation bearing request message that receive;
Described delete cells 506 is used at the described PDP Context Container parameter described TI of deletion and incidence relation corresponding to EPS Bearer Id;
Described transmitting element 501 also is used for sending the deexcitation bearing response message to MME, and the PDP Context Container parameter after upgrading.
In addition, when not having the incidence relation of NSAPI, TI and EPS Bearer Id among the described RNC, described transmitting element 501 also is used for sending the PDP Context request message to this incidence relation of MME acquisition request.
The embodiment of the invention also provides a kind of system, comprise RNC in the 3G network and the MME of LTE/SAE network, wherein: RNC comprises the unit of setting up be used to the incidence relation of setting up NSAPI, TI and EPS Bearer Id, and is used for sending the transmitting element of described incidence relation; MME is used for preserving NSAPI, the TI of described RNC transmission and the incidence relation of EPS Bearer Id.Concrete structure as for RNC can with reference to the explanation of above-described embodiment, repeat no more herein.
Below by several specific embodiments respectively to doing concrete description based on the Iu-PS interface of 3G network different signaling process in the management of the unified PDP Context of the S1 interface of LTE/SAE network and bearer context.
As shown in Figure 6, the flow chart of the PDP context activation that the UE that provides for the embodiment of the invention one initiates comprises following process:
Step 601, UE initiate the PDP context activation request.
After step 602, RNC receive the PDP context activation request message, the PDP context activation request message is converted to the NAS message PDN Connectivity Request (PDN connection request) of SAE network, and sends to MME.
RNC preserves NSAPI and the TI parameter in the PDP context activation request message, so that after MME has set up carrying, set up and preserve the incidence relation of NSAPI, TI and EPS Bearer ID.In addition, RNC also preserves qos parameter etc.
Wherein, the concrete transfer process that the PDP context activation request message is converted to PDN Connectivity Request is as follows: fill in the APN parameter of PDN Connectivity Request message, the APN that namely carries in the PDP Context request message; If carried static address in the PDP context activation request message, the PDN AddressAllocation (PDN address assignment) of PDN Connectivity Request (PDN connection request) message is set to the assigning process that UE does not carry out the IP address so; Otherwise, be set to the assigning process that UE carries out the IP address.In addition, may also relate to the conversion of other parameters and filling in etc.
Step 603, SAE create the default bearer process.
After step 604, RNC receive Bearer Setup Request (request is set up in carrying) message, preserve the EPS Bearer Id parameter in the Bearer Setup Request message, and according to prior NSAPI and the TI parameter of preserving of RNC in the step 602, set up NSAPI, TI, and the incidence relation between the parameter such as EPS Bearer Id, and this incidence relation is saved among the PDP Context Container.Then, RNC returns Bearer Setup Response (response is set up in carrying) message to MME, wherein carries optional parameters PDP Context Container.
After step 605, RNC received Bearer Setup Request message, the qos parameter that at first carries according to the qos parameter of preserving and Bearer Setup Request was held consultation, and sets up radio bearer.
After radio bearer is set up in step 606, RNC carrying, return Bearer Setup Response (response is set up in carrying) message to MME.
After step 607, MME receive that response message is set up in carrying, preserve PDP Context Container and revise the beared information of user's face.
After step 608, RNC receive PDN Connectivity Accept (PDN connects acceptance) message, be converted into Activate PDP Context Response (activating the PDP Context response message), send to UE after it is encoded.
Wherein, be that the process of Activate PDP ContextResponse is with PDN Connectivity Accept message conversion: fill in Activate PDP Context Response message parameter PDPAddress, i.e. parameter PDN Address Information among the PDN Connectivity Accept; And the conversion of other parameters and filling in etc.
RNC preserves the parameter EPS BearerId among the PDN Connectivity Accept (PDN connects acceptance), and sum NSAPI is related.
As shown in Figure 7, the flow chart of the PDP Context secondary activating that the UE that provides for the embodiment of the invention two initiates comprises following process:
After step 702, RNC receive PDP Context secondary activating request message, be converted into the NAS message Request Bearer Resource Allocation (the request bearing resource distributes) of SAE; Then, RNC preserves the parameters such as NSAPI, TI, LBI.
Wherein, the detailed process that PDP Context secondary activating request message is converted to Request Bearer ResourceAllocation message is: the LBI parameter of filling in Request Bearer Resource Allocation message, namely correspond to the Linked TI that carries in the PDP Context secondary activating request message, find corresponding EPS Bearer Id by RNC according to Linked TI, namely as LBI; Fill in the PTI parameter of Request BearerResource Allocation message, replace the UE dynamic assignment by RNC; Fill in the SDF qos parameter of RequestBearer Resource Allocation message, namely correspond to the Requested QoS that carries in the PDP Context secondary activating request message; Fill in the TFT parameter of Request Bearer ResourceAllocation message, the TFT that namely carries in the PDP Context secondary activating request message.
Step 703, SAE initiate to create the dedicated bearer process.
After step 704, RNC receive Bearer Setup Request (request is set up in carrying) message, preserve and carry the EPS Bearer Id parameter of setting up in the request message, and NSAPI, TI, the LBI parameter of preserving according to RNC in the step 702, set up NSAPI, TI, LBI, and the incidence relation between the EPS Bearer Id, and this incidence relation is saved among the PDP Context Container.Then, RNC returns Bearer Setup Response (response is set up in carrying) message to MME, wherein carries optional parameters PDPContext Container.
After radio bearer is set up in step 706, RNC carrying, return carrying to MME and set up response message, wherein carry optional parameters PDP Context Container.
After step 707, MME received that response message is set up in carrying, preservation PDP Context Container also returned dedicated bearer to Serving GW and sets up response message.
Because RNC can not receive the dedicated bearer of SAE and set up response message that RNC can arrange a timer and wait for, after affirmation SAE dedicated bearer is successfully established, returns PDP Context secondary activating response message to UE more again.
As shown in Figure 8, the flow chart of the PDP Context secondary activating of the network request that provides for the embodiment of the invention three comprises following process:
Step 801, network are initiated the Establishing process of dedicated bearer, MME sends Bearer SetupRequest (request is set up in carrying) message to RNC, wherein Session Management Configuration parameter may comprise UL TFT, EPS Bearer Identity, Linked EPS Bearer Identity (LBI), RadioPriority, Packet Flow Id etc.
After step 802, RNC receive the Bearer Setup Request message of MME transmission, send Request Secondary PDP Context Activation (request PDP Context secondary activating) message to UE.
RNC preserves EPS Bearer Identity and the LBI parameter in the Bearer Setup Request message, and finds corresponding TI, i.e. Linked TI according to Linked EPS Bearer Identity (LBI) parameter; Then, RNC replaces network side to distribute and preserves the TI parameter.RNC corresponds to LBI with Linked TI.
After step 803, RNC receive Activate Secondary PDP ContextRequest (request of the PDP Context secondary activating) message that UE sends over, preserve the NSAPI parameter in the PDP Context secondary activating request message, and EPS Bearer Id, LBI and the TI parameter of preserving according to RNC in the step 802, set up the incidence relation of NSAPI, EPS Bearer Id, LBI and TI parameter, and this incidence relation is saved among the PDP Context Container.
The process of setting up of step 804, RAB.
Step 806, RNC return Bearer Setup Response message to MME, wherein carry optional parameters PDP Context Container; MME preserves PDP Context Container after receiving Bearer Setup Response (response is set up in carrying) message.
As shown in Figure 9, the flow chart of the PDP context deactivation that the UE that provides for the embodiment of the invention four initiates comprises following process:
Step 901, UE initiate the deexcitation flow process of PDP Context, and UE sends Deactivate PDPContext Request (request of deexcitation PDP Context) message.
After step 902, RNC receive Deactivate PDP Context Request (request of the deexcitation PDP Context) message that UE sends over, send Request Bearer Resource Release (the request bearing resource discharges) message to MME.
RNC finds corresponding EPSBearer Identity parameter according to the TI in the Request Bearer Resource Release message, and as the LBI parameter of Request Bearer Resource Release (the request bearing resource discharges) message; RNC replaces UE to distribute PTI and preserves PTI.
Step 903, network side are initiated the process of deleting bearing request.
After RNC receives Deactivate Bearer Request (the deexcitation carrying request) message of MME transmission, this beared information of deletion in the PDP Context Container that preserves; And return Deactivate PDP Context Accept (acceptance of deexcitation PDP Context) message to UE.Then, RNC returns Deactivate Bearer Response (deexcitation carrying response) message to MME, wherein carries optional parameters PDP Context Container.
Step 904, RNC return Deactivate PDP Context Accept (acceptance of deexcitation PDP Context) message to UE after receiving Deactivate Bearer Request (the deexcitation carrying request) message of MME transmission.
Step 905, RNC initiate the dispose procedure of radio bearer.
Step 906, RNC return Deactivate Bearer Response (EPS Bearer Identity, Session Management Response) (deexcitation carrying response) message to MME.Wherein carry optional parameters PDP Context Container.
As shown in figure 10, the flow chart of the PDP context deactivation that the network side that provides for the embodiment of the invention five is initiated comprises following process:
Step 1001, network are initiated the deexcitation flow process of dedicated bearer, and MME sends DeactivateBearer Request (EPS Bearer Identity, Session Management Configuration) message to RNC.RNC sends Deactivate PDP Context Request (request of deexcitation PDP Context) message to UE after receiving the Deactivate Bearer Request that MME sends over (deexcitation carrying request) message.
RNC finds corresponding TI according to EPS Bearer Identity.RNC is this beared information of deletion in the PDP ContextContainer that preserves.
Step 1002, RNC send Deactivate PDP Context Request (request of deexcitation PDP Context) message to UE after receiving the Deactivate Bearer Request that MME sends over (deexcitation carrying request) message.
Step 1003, RNC receive Deactivate PDP Context Accept (acceptance of the deexcitation PDP Context) message that UE returns.
Step 1005, RNC return Deactivate Bearer Response (EPS BearerIdentity, Session Management Response) (deexcitation carrying response) message to MME.Wherein carry optional parameters PDP Context Container; MME preserves PDP Context Contaiher after receiving Deactivate Bearer Response (deexcitation carrying response) message.
As shown in figure 11, the flow chart of the Routing Area Update that provides for the embodiment of the invention six comprises following process:
Step 1101, UE initiate the RAU request message.
After step 1102, RNC receive the RAU request message, the RAU request is converted to the TAU request message.Concrete transfer process is: the S-TMSI during TAU is asked corresponds to the P-TMSI in the RAU request; Old TAI in the TAU request is corresponded to Old RAI in the RAU request; EPS bearer status in the TAU request is corresponded to PDP context status parameter among the RAU; And the correspondence of other parameters and conversion etc.
Wherein, if the parameter PDP context status in RAU request message sign has among the PDP Context information of activation and the RNC and does not have this user activated PDP Context information (such as NSAPI, TI and EPS Bearer Id etc.), then RNC sends the PDP Context request message to MME, MME returns the PDP Context response message, wherein includes the PDP Context Container that preserves among the MME.
Step 1103, RNC send the TAU request message to MME.
Context request process between step 1104, MME.
In Context Response message, carry PDP Context Container parameter, i.e. the relevant informations such as bearing identification on the source RNC of MME preservation.
Step 1105, optional verification process.
Step 1106, new MME send context to old MME and confirm.
Step 1107, new MME return the process that context response information initiates to set up carrying according to old MME.
Step 1108, position updating process.
Step 1109, old MME initiate the deleting bearing process.
After step 1110, RNC receive TAU Accept (tracing section updating acceptance) message, be converted into RAU Accept (Routing Area Update acceptance) message.Be specially: the P-TMSI in RAU Accept (tracing section updating acceptance) message is corresponded to S-TMSI among the TAU Accept (Routing Area Update acceptance); With parameter not corresponding with TA List among the TAU Accept (Routing Area Update acceptance) in RAU Accept (tracing section updating acceptance) message, TA List parameter ignorance need not; PDP context status in RAU Accept (tracing section updating acceptance) message is corresponded to EPS bearer status parameter among the TAU Accept (Routing Area Update acceptance).
After step 1111, RNC receive RAU Complete (Routing Area Update is finished) message, be converted into TAU Complete (tracking area is finished) message.
The parameter that parameter in RAU Complete (Routing Area Update is finished) message is not corresponding with EPS bearer status among the TAU Complete (tracking area is finished), the EPS bearer status parameter that indicates among the TAU Complete (tracking area is finished) is the EPS bearer status parameter among the TAUAccept (tracing section updating acceptance) that preserves.
As shown in figure 12, the flow chart of the service request that provides for the embodiment of the invention seven comprises following process:
Step 1202, UE send Service Request (service request) message to RNC.After RNC receives Service Request message, be converted into Service Request (service request) message in the LTE/SAE network.Concrete transfer process is: the S-TMSI parameter in the LTE/SAE business request information is corresponded to P-TMSI parameter in the 3G business request information; Service type parameter in the LTE/SAE business request information is corresponded to Service type parameter in the 3G business request information; And other parameters correspondences and conversion etc.
Wherein, if the parameter PDP context status in RAU request message sign has among the PDP Context information of activation and the RNC and does not have this user activated PDP Context information, such as NSAPI, TI and EPS Bearer Id etc., then RNC send the PDP Context request message to MME, MME returns the PDP Context response message, wherein includes the PDP Context Container that preserves among the MME.
If MS is in the PMM-IDLE state, to carry the UE safe context among the Initial Context Setup Request (initial context is set up request) so, then initiate the SMC process by RNC;
If network is in PMM-CONNECTED and Service Type is designated as Data, to carry user plane information among the Initial Context Setup Request (initial context is set up request) so, then be initiated to set up the process of empty port load-supporting by RNC.
After step 1205, RNC receive Initial Context Setup Request message, if find to have safe context, then initiate the SMC process to UE.
After step 1206, RNC receive Initial Context Setup Request message, if find to have user plane information, then send Service Accept (professional acceptance) message to MS.
After step 1207, RNC receive Initial Context Setup Request message, if find that user plane information is arranged, then initiate the process of setting up of radio bearer.
One of ordinary skill in the art will appreciate that and realize that all or part of step that above-described embodiment method is carried is to come the relevant hardware of instruction to finish by program, described program can be stored in a kind of computer-readable recording medium, this program comprises step of embodiment of the method one or a combination set of when carrying out.
In addition, each functional unit in each embodiment of the present invention can be integrated in the processing module, also can be that the independent physics of unit exists, and also can be integrated in the module two or more unit.Above-mentioned integrated module both can adopt the form of hardware to realize, also can adopt the form of software function module to realize.If described integrated module realizes with the form of software function module and during as independently production marketing or use, also can be stored in the computer read/write memory medium.
The above-mentioned storage medium of mentioning can be read-only memory, disk or CD etc.
Therefore, this paper provides based on the Iu-PS interface of 3G network to the unified PDP Context of the S1 interface of LTE/SAE network and management method, radio network controller and the system of bearer context, can introduce by the UTRAN of 3G network the S1 interface of SAE network, and then introduce the characteristic of some SAE networks, thereby improve the performance of original 3G network and can make the SAE Web-compatible to the UTRAN of 3G network, to promote evolution and the fusion of network.The investment of operator can saved and protect to the embodiment of the invention, easy to implement, very little on the realization impact of existing standard and network element.
More than the Iu-PS interface based on 3G network provided by the present invention is described in detail to the unified PDP Context of the S1 interface of LTE/SAE network and management method, radio network controller and the system of bearer context, used specific case herein principle of the present invention and execution mode are set forth, the explanation of above embodiment just is used for helping to understand the solution of the present invention; Simultaneously, for one of ordinary skill in the art, according to thought of the present invention, all will change in specific embodiments and applications, in sum, this description should not be construed as limitation of the present invention.
Claims (14)
1. the context management method based on the S1 unified interface is characterized in that, comprising:
Radio network controller is set up the incidence relation of the grouping system bearing identification EPS Bearer Id of Network layer Service Access Point Identifier NSAPI, Transaction Identifier TI and evolution;
Radio network controller is with described incidence relation notice Mobility Management Entity.
2. the context management method based on the S1 unified interface according to claim 1 is characterized in that, the step that described radio network controller is set up the incidence relation of NSAPI, TI and EPS Bearer Id comprises before:
Radio network controller receives packet data protocol PDP context activation request message or PDP Context secondary activating request message, preserves Network layer Service Access Point Identifier NSAPI and Transaction Identifier TI parameter information;
Described PDP context activation request message is converted to grouped data network PDN connection request message, or described PDP Context secondary activating request message is converted to request bearing resource assignment messages and sends to Mobility Management Entity;
Radio network controller receives the carrying of described Mobility Management Entity transmission and sets up request message, preserves bearing identification EPS Bearer Id parameter information.
3. the context management method based on the S1 unified interface according to claim 1 is characterized in that, the step that described radio network controller is set up the incidence relation of NSAPI, TI and EPS Bearer Id comprises before:
Request message is set up in the carrying that radio network controller receiving mobility management entity sends, and preserves EPS Bearer Id parameter information, and sends request PDP Context secondary activating message to terminal;
Radio network controller distribution T I parameter information, and from the PDP Context secondary activating request message that the described terminal that receives is returned, preserve the NSAPI parameter information.
4. the context management method based on the S1 unified interface according to claim 1 is characterized in that, described radio network controller is specially the step of described incidence relation notice Mobility Management Entity:
Radio network controller is saved in described incidence relation in the PDP Context container parameters;
Send described PDP Context container parameters to Mobility Management Entity.
5. according to claim 2 or 3 described context management methods based on the S1 unified interface, it is characterized in that, also comprise:
Radio network controller receives the PDP context deactivation request message, finds corresponding EPS Bearer Id parameter information according to the TI parameter information in the described message from described incidence relation, and sends the deexcitation bearing request message to Mobility Management Entity;
After radio network controller receives the deexcitation bearing response message of described Mobility Management Entity transmission, the described TI of deletion and incidence relation corresponding to EPS Bearer Id in the PDP Context container parameters, and the PDP Context container parameters after will upgrading sends to Mobility Management Entity.
6. according to claim 2 or 3 described contextual management methods based on the S1 unified interface, it is characterized in that, also comprise:
The deexcitation bearing request message that radio network controller receiving mobility management entity sends finds corresponding TI parameter information according to the EPS Bearer Id parameter information in the described message from described incidence relation;
Radio network controller is deleted described TI and incidence relation corresponding to EPS Bearer Id in the PDP Context container parameters;
After radio network controller is received the deexcitation bearing request message of Mobility Management Entity transmission, send deexcitation PDP Context request message to UE;
After the deexcitation PDP Context that radio network controller reception UE returns is accepted message, initiate the dispose procedure of radio bearer;
Radio network controller returns to the activation bearing response message to Mobility Management Entity, carries the PDP Context container parameters after the renewal in the described message.
7. according to claim 2 or 3 described context management methods based on the S1 unified interface, it is characterized in that, also comprise:
When not having the incidence relation of NSAPI, TI and EPS Bearer Id in the described radio network controller, radio network controller sends the PDP Context request message to Mobility Management Entity;
The PDP Context response message that described radio network controller returns according to described Mobility Management Entity obtains the incidence relation of NSAPI, TI and EPS Bearer Id.
8. a radio network controller is characterized in that, comprising:
Set up the unit, for the incidence relation of the grouping system bearing identification EPS Bearer Id that sets up Network layer Service Access Point Identifier NSAPI, Transaction Identifier TI and evolution;
Transmitting element is used for the described incidence relation of setting up the unit of setting up is sent to Mobility Management Entity.
9. radio network controller according to claim 8 is characterized in that, also comprises:
Receiving element be used for receiving PDP context activation request message or PDP Context secondary activating request message, and request message is set up in the carrying that Mobility Management Entity sends;
Acquiring unit, be used for obtaining Network layer Service Access Point Identifier NSAPI and Transaction Identifier TI parameter information from PDP context activation request message or PDP Context secondary activating request message that described receiving element receives, and set up from the carrying that described receiving element receives and to obtain bearing identification EPS Bearer Id parameter information the request message;
Converting unit is used for the PDP context activation request message that described receiving element receives is converted to PDN connection request message, or described PDP Context secondary activating request message is converted to request bearing resource assignment messages;
Described transmitting element also is used for the PDN connection request message after the described converting unit conversion or request bearing resource assignment messages are sent to Mobility Management Entity.
10. radio network controller according to claim 8 is characterized in that, also comprises:
Receiving element is used for receiving carrying and sets up request message and PDP Context secondary activating request message;
Acquiring unit is used for setting up request message from the carrying that described receiving element receives and obtains EPS Bearer Id parameter information, and obtains the NSAPI parameter information from the PDP Context secondary activating request message that described receiving element receives;
Allocation units are used for distribution T I parameter information after described receiving element receives carrying to set up request message;
Described transmitting element also is used for sending request PDP Context secondary activating message to terminal after described receiving element receives carrying to set up request message.
11. radio network controller according to claim 8 is characterized in that,
Described transmitting element is used for by the PDP Context container parameters described incidence relation being sent to Mobility Management Entity.
12. according to claim 9 or 10 described radio network controllers, it is characterized in that, also comprise and search unit and delete cells, wherein:
Described receiving element also is used for receiving the PDP context deactivation request message, or the deexcitation bearing request message of Mobility Management Entity transmission;
The described unit of searching, TI parameter information for the PDP context deactivation request message that receives according to described receiving element finds corresponding EPS Bearer Id parameter information from described incidence relation, or finds corresponding TI parameter information according to the EPS Bearer Id parameter information in the deexcitation bearing request message of described receiving element reception from described incidence relation;
Described delete cells is used at PDP Context container parameters deletion described NSAPI, TI and incidence relation corresponding to EPS Bearer Id;
Described transmitting element also is used for sending the deexcitation bearing response message to Mobility Management Entity, and the PDP Context container parameters after upgrading.
13. according to claim 9 or 10 described radio network controllers, it is characterized in that,
Described transmitting element also is used for sending context request message to Mobility Management Entity when described radio network controller does not have the incidence relation of NSAPI, TI and EPSBearer Id;
Described receiving element also is used for receiving the context response information that described Mobility Management Entity returns, and comprises the incidence relation of NSAPI, TI and EPS Bearer Id in the described message.
14. a communication system is characterized in that, comprising:
Radio network controller, comprise the unit of setting up be used to the incidence relation of the grouping system bearing identification EPS Bearer Id that sets up Network layer Service Access Point Identifier NSAPI, Transaction Identifier TI and evolution, and be used for described incidence relation is sent to the transmitting element of Mobility Management Entity;
Mobility Management Entity is used for preserving NSAPI, the TI of described radio network controller transmission and the incidence relation of EPS Bearer Id.
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| CN101984718A (en) * | 2010-10-19 | 2011-03-09 | 中兴通讯股份有限公司 | Signaling transmission method and user equipment |
| CN102036377B (en) * | 2011-01-26 | 2013-01-09 | 大唐移动通信设备有限公司 | Method, system and network element for initiating active paging |
| WO2012171198A1 (en) * | 2011-06-16 | 2012-12-20 | 华为技术有限公司 | Method, access network equipment and system for implementing charging |
| CN105515720B (en) * | 2014-09-25 | 2019-02-26 | 中国电信股份有限公司 | The correlating method of signaling and data, device and system |
| CN107257571A (en) * | 2017-07-15 | 2017-10-17 | 深圳市华琥技术有限公司 | A kind of Transaction Identifier acquisition methods and communication system |
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