CN100334895C - Request of side-response movable table service of network in universal group wireless service - Google Patents
Request of side-response movable table service of network in universal group wireless service Download PDFInfo
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- CN100334895C CN100334895C CNB2004100498795A CN200410049879A CN100334895C CN 100334895 C CN100334895 C CN 100334895C CN B2004100498795 A CNB2004100498795 A CN B2004100498795A CN 200410049879 A CN200410049879 A CN 200410049879A CN 100334895 C CN100334895 C CN 100334895C
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Abstract
The present invention discloses a method for responding to service requests of a mobile station by the network side of general packet wireless services. In the present invention, the mobile station sends a user service request to a service supporting node of general packet wireless services; the service supporting node of general packet wireless services sends the user service request to an access controller of gateway service supporting nodes of general packet wireless services; the access controller of gateway service supporting nodes of general packet wireless services, which receives the user service request, selects a preferred gateway service supporting node of general packet wireless services, and sends the user service request to the gateway service supporting node of general packet wireless services; after the gateway service supporting node of general packet wireless services receives the user service request, the gateway service supporting node of general packet wireless services responds to the user service request. When the present invention is used, data reflux during network data transmission is avoided, route resources are saved, the service loads of each GGSN can be equalized, and users obtain preferable services while the service competitiveness of network carriers is enhanced.
Description
Technical field
The present invention relates to wireless communication field, be specifically related to the method for a kind of GPRS network side response mobile station service request.
Background technology
Along with science and technology development, Packet data service is widely used, second generation mobile communication system is just gradually to 3-G (Generation Three mobile communication system) evolution, wherein, Wideband Code Division Multiple Access (WCDMA) (WCDMA) system is exactly with the GPRS (GPRS) of a second generation mobile communication system representative to 3-G (Generation Three mobile communication system) evolution, the core net of WCDMA is that evolution is carried out on the basis with the core net of GPRS, so the network configuration of WCDMA core net is identical substantially with the network configuration of GPRS core net.At present, how for the service request of different mobile stations (MS) provides the preferred route that inserts preferred gateways universal grouping wireless business supporting node (GGSN), become a question of common concern.
Fig. 1 is that block data protocol context (PDP Context) activates, transmitting data stream journey figure, and as shown in Figure 1, in the WCDMA system, PDP Context activates, the implementation procedure of transmission data may further comprise the steps:
Step 101:MS sends PDPContext to service universal grouping wireless business supporting node (SGSN) and activates request (Activate PDP Context Request), carry the information such as service quality (QoS) parameter of network layer Operational Visit sign (NSAPI), PDP type, APN (APN), requirement among this Activate PDP C ontextRequest, wherein, NSAPI as the part of Tunnel Identifier (TEID), is used to identify PDP Context between SGSN and ggsn (GGSN); The PDP type comprises end-to-end protocol (PPP) type, Internet protocol (IP) type etc.; APN can be provided to SGSN by MS, and SGSN is addressed to corresponding GGSN according to APN, and GGSN determines the external network that MS will visit according to APN, and MS can not provide APN to SGSN yet, at this moment, selects default APN by SGSN according to MS user's CAMEL-Subscription-Information; Qos parameter is the quality requirement that the Packet data service of MS appointment will reach;
Step 102:SGSN carries out security inspection and encryption with MS after receiving Activate PDP Context Request, and this step is an optional step.
Step 103:SGSN resolves the GGSN address information according to APN, if SGSN can parse the address information of GGSN according to APN, then create TEID for PDP Context, this TEID can be the combination of IMSI International Mobile Subscriber Identity (IMSI) and NSAPI, be used for PDP Context of unique identification between SGSN and GGSN, SGSN sends PDP Context request to create (Create PDP Context Request) to GGSN then, carry the PDP type among this Create PDP Context Request, pdp address, APN, qos parameter, TEID, preference pattern etc., wherein, pdp address is the IP address of MS, be optional parameters, Create PDP Context Request can not carry pdp address, at this moment, in follow-up processing procedure, can be MS distributing IP address by GGSN, also can be MS distributing IP address by the packet data network (PDN) that final and MS connect; Preference pattern is meant the preference pattern of APN, and promptly APN is that selected by MS or selected by SGSN.If SGSN can't parse the address information of GGSN according to APN, then the PDP Context of SGSN refusal MS initiation activates request.
After step 104:GGSN receives Create PDP Context Request, determine outside PDN according to APN, and consult QoS, if GGSN can satisfy the quality of service requirement of qos parameter, then return PDP Context and create response (Create PDP Context Response) to SGSN, carry among this Create PDP Context Response TEID, pdp address, link bearer (BackboneBearer) agreement, qos parameter, etc. information.If GGSN can't satisfy the quality of service requirement of qos parameter, the then PDP Context request to create of GGSN refusal SGSN initiation, the PDP Context activation request of SGSN refusal MS initiation then.
After step 105:SGSN receives Create PDP Context Response, in PDP Context, insert NSAPI and GGSN address information, be used to identify this PDP Context, and according to qos parameter selection radio priority, return PDP Context to MS then and activate response (Activate PDPContext Accept), carry information such as PDP type, pdp address, qos parameter, radio priority, PDP config option among this Activate PDP Context Accept.MS receives Activate PDPContext Accept, the route between foundation and the GGSN, and at this moment, MS and PDN have set up transmission channel, can carry out transfer of data.
Step 106:MS carries out transfer of data by SGSN, GGSN and PDN.
Above-mentioned steps 104,105 also can be used as a step, i.e. the request of GGSN response customer service.
If Fig. 1 is showed with the form of network configuration, then as shown in Figure 2.
Fig. 2 is that single GGSN concentrates the networking structure sketch.Wherein, that be arranged in travelling carriage local service territory is SGSN201,202,203, and that be arranged in grouped data access service territory is GGSN205.
The packet data bearers net is used for the data route on the bearer network layer, comprises domain name analysis system 204 and some routers.Wherein, couple in router 206,207 links to each other with SGSN201,202 respectively, and couple in router 209 links to each other with SGSN203; Couple in router 206,207 links to each other with convergence router 208, convergence router 208, couple in router 209 link to each other with core router 210, core router 210 and then link to each other with GGSN205 in the grouped data access service territory, GGSN205 links to each other with extranets by core router 210 again.
During work, SGSN201,202 receives the different kinds of business request from MS, such as: voice service, picture business, short message service etc.These service request will converge to convergence router 208 by couple in router 206,207 respectively, and finally enter core router 210, and then insert GGSN205.SGSN203 receives the different kinds of business request from MS, and these service request will enter core router 210 by couple in router 209, and then inserts GGSN205.
The APN that each service request access GGSN205 need rely on SGSN to comprise according to each service request is addressed to corresponding GGSN, concrete addressing method is that SGSN utilizes APN that each service request comprises to generate the domain name of GGSN, be the domain name mapping of GGSN the IP address of GGSN by domain name analysis system then, and provide the IP address of GGSN with the form of address list, promptly first address in SGSN201,202,203 each self-contained GGSN tabulation is the address of GGSN205, then when each service request inserts GGSN by core router 210, all insert GGSN205.After the service request of MS was accepted by GGSN205, the APN that GGSN205 comprises according to each service request again determined the external network that MS will visit.At this moment, MS just can pass through router, has carried out data communication through SGSN, GGSN and extranets.
By the above as can be seen, the different kinds of business of all local SGSN all is linked into same GGSN, this means that the data service capacity of GGSN is equivalent to the summation of all SGSN data service capacities, and so huge GGSN designs quite complexity, and involve great expense.Simultaneously, as an equipment, the limited capacity of GGSN has also limited the development of data service.For fear of the influence of these unfavorable factors, prior art then utilize a plurality of GGSN to concentrate the notion of networking, referring to Fig. 3, Fig. 3 be the concentrated networking structure sketches of a plurality of GGSN.Wherein, that be arranged in travelling carriage local service territory is SGSN301,302,303, and that be arranged in grouped data access service territory is GGSN305,306.
The packet data bearers net is used for the data route on the bearer network layer, comprises domain name analysis system 304 and some routers.Wherein, couple in router 307,308 links to each other with SGSN301,302 respectively, and couple in router 310 links to each other with SGSN303; Couple in router 307,308 links to each other with convergence router 309, convergence router 309, couple in router 310 link to each other with core router 311, core router 311 and then link to each other with GGSN305,306 in the grouped data access service territory, GGSN305,306 links to each other with extranets by core router 311 again.
During work, SGSN301,302 receives the different kinds of business request from MS, such as: voice service, picture business, short message service etc.These service request will converge to convergence router 309 by couple in router 307,308 respectively, and finally enter core router 311, and then insert GGSN305,306.SGSN303 receives the different kinds of business request from MS, and these service request will enter core router 311 by couple in router 310, and then inserts GGSN305,306.
Each service request inserts GGSN305,306 need the APN that relies on SGSN to comprise according to each service request to be addressed to corresponding GGSN, concrete addressing method is that SGSN utilizes APN that each service request comprises to generate the domain name of GGSN, be the domain name mapping of GGSN the IP address of GGSN by domain name analysis system then, and provide the IP address of GGSN with the form of address list, promptly at SGSN301,302, in 303 each self-contained GGSN tabulation first, second address is respectively GGSN305,306 address, then when each service request inserts GGSN by core router 311, can insert GGSN305 or GGSN306.After the service request of MS was accepted by GGSN, the APN that GGSN comprises according to each service request again determined the external network that MS will visit.At this moment, MS just can pass through router, has carried out data communication through SGSN, GGSN and extranets.
Above-described GGSN can be two, also can be more than two, no matter is several GGSN, and the address of each GGSN is all arranged according to certain sequence arrangement in SGSN301,302,303 each self-contained GGSN tabulation.From the above, this a plurality of GGSN concentrate the method for networking has been alleviated to a certain extent influences the data service development because of the GGSN capacity limit problem, have certain advantage, and still, its shortcoming also can not be ignored.
On the one hand, because of same service request can be linked among the different GGSN by an APN, so service request just need make one's options to inserting which GGSN when inserting GGSN.But it is polling that SGSN selects the mode of GGSN at present, be the putting in order of each GGSN in the GGSN list address that comprises according to oneself of SGSN, select GGSN to carry out service access one by one, so do be for to all GGSN according to the capacity mean allocation, promptly the resource that taken by service request of each GGSN is much at one.But its capacity of different GGSN is also different, and the utilization rate of the GGSN that capacity is big relatively is relatively low; The GGSN that capacity is relatively little then may transship because of excess resource is occupied.
Present this GGSN polling also has a shortcoming that is difficult to overcome.GGSN has different states constantly in difference, as current utilization rate, Congestion Level SPCC etc., take polling to select GGSN then GGSN work at present state not to be considered, might cause the service request that inserts GGSN to have very high qos requirement like this, and the current utilization rate of this GGSN is too high and congested serious, therefore, GGSN be owing to can't provide this service request desired QoS, and directly refuses this service request; Yet might exist other GGSN that higher qos requirement can be provided that can insert this moment, but cause situation such as the unreasonable and GGSN wasting of resources of above-mentioned service access to take place because this GGSN does not have selected when current polling.
On the other hand, when a MS carries out data communication with extranets but when carrying out data communication with another MS that is positioned at travelling carriage local service territory, the data that insert from a certain SGSN will enter a certain GGSN by core router 311, afterwards more from then on GGSN be back to a certain SGSN by same core router 311.This data reflux and have brought great flow waste to core router 311, have increased the weight of its data route burden simultaneously.
Summary of the invention
In view of this, main purpose of the present invention is to provide the method for a kind of GPRS network side response mobile station service request, data when avoiding network data transmission reflux, saved route resource, and the business load of balanced each GGSN of energy, in the service competitiveness that improves Virtual network operator, make the user obtain better service.
For achieving the above object, technical scheme of the present invention is achieved in that
The invention discloses the method for a kind of general packet radio service (GPRS) network side response mobile station service request, add GPRS gateway service support node access controller GGSN-AC at network side, in the GPRS gateway service support node GGSN of GPRS serving GPRS support node SGSN tabulation, first address is made as the address of GGSN-AC, the address of arranging each GGSN more in order; This method is further comprising the steps of:
A. travelling carriage sends the customer service request to SGSN, SGSN sends to the pairing GGSN-AC in first address in self address list with this customer service request, this GGSN-AC links to each other with each SGSN, also link to each other with each GGSN, the address list that has each SGSN and each GGSN among this GGSN-AC also has the status list of representing each GGSN work at present state;
B. the GGSN-AC that receives the customer service request selects a GGSN according to status list and the address list self stored, and the customer service request is sent to this GGSN;
C. after this GGSN receives the customer service request, this customer service request is responded.
Among the step a, if SGSN can't search the pairing GGSN-AC in first address in its address list, then, the customer service request is sent to the corresponding GGSN that searches, and directly enter step c according to the GGSN of other address searching correspondence under this first address in its address list.
Among the step a, described GGSN-AC links to each other with each SGSN by gn interface, the GGSN-AC that is reached links to each other with each GGSN by the Gn expansion interface, this Gn expansion interface is to use the interface of the Extended Protocol of general packet wireless service tunnel protocol, is used to support the data communication between GGSN-AC and each GGSN.
The described GGSN-AC of step b selects the method for GGSN to be:
GGSN-AC sets up described status list and selects GGSN based on one in the utilization rate of the route distance between congestion state, SGSN and each GGSN of each GGSN, each GGSN, these four GGSN work at present states of service quality that each GGSN can provide or multinomial.
Described method according to congestion state selection GGSN further comprises:
GGSN-AC inquires about the congestion state of all GGSN in the described status list, and then selects a lightest GGSN of Congestion Level SPCC, and the customer service request is sent to this GGSN.
Described method according to route distance selection GGSN further comprises:
Route distance between the SGSN of GGSN-AC each GGSN of comparison and the request of forwarding mobile station service is selected the shortest GGSN of route distance, and the customer service request is sent to this GGSN.
Described method according to utilization rate selection GGSN further comprises:
GGSN-AC inquires about the utilization rate of each GGSN in the described status list, selects the GGSN that utilization rate is minimum, and the customer service request is sent to this GGSN.
Described method according to service quality selection GGSN further comprises:
GGSN-AC selects an energy to provide the GGSN of best service quality for the customer service request, and the customer service request is sent to this GGSN.
GGSN-AC regularly carries out status poll to each GGSN, and the current state that each GGSN reports is stored in the described status list.
GGSN-AC independently is provided with, or is arranged among any SGSN or any GGSN.
Compared with prior art, the method of GPRS network side response mobile station service provided by the present invention request, between SGSN and GGSN, add GGSN access controller (GGSN-AC, GGSN ACCESS CONTROL), after SGSN receives service request from user, earlier service request from user is inserted GGSN-AC by SGSN, select the GGSN corresponding by GGSN-AC again, and then service request from user is inserted this GGSN with the customer service request.The inventive method avoids data to reflux, save route resource, and the business load of balanced each GGSN of energy, in the service competitiveness that improves Virtual network operator, makes the user obtain better service.
Description of drawings
Fig. 1 is for PDP Context activates, transmitting data stream journey figure;
Fig. 2 is that single GGSN concentrates the networking structure sketch;
Fig. 3 is that a plurality of GGSN concentrate the networking structure sketch;
Fig. 4 is a networking structure sketch of the present invention;
Fig. 5 is for PDP Context of the present invention activates, transmitting data stream journey figure.
Embodiment
The present invention is further described in more detail below in conjunction with drawings and the specific embodiments.
The inventive method is for adding GGSN-AC between SGSN and GGSN, GGSN-AC is by getting in touch the resource status of understanding each GGSN with the state of each GGSN, the different business request that MS is sent among the SGSN inserts different GGSN by preferred route, with the resource load of balanced each GGSN.
As shown in Figure 4, that be arranged in travelling carriage local service territory is SGSN401,402,403, and that be arranged in grouped data access service territory is GGSN-AC405 and GGSN406,407.
The packet data bearers net is used for the data route on the bearer network layer, comprises domain name analysis system 404 and some routers.Wherein, couple in router 408,409 links to each other with SGSN401,402 respectively, and couple in router 411 links to each other with SGSN403; Couple in router 408,409 links to each other with convergence router 410, convergence router 410 links to each other with GGSN406 in core router 412 and the grouped data access service territory, and couple in router 411 links to each other with GGSN407 in core router 412 and the grouped data access service territory; Core router 412 and then link to each other with GGSN-AC405 in the grouped data access service territory, GGSN-AC405 links to each other with GGSN406,407 again, and GGSN406,407 links to each other with extranets by core router 412 again.Wherein, GGSN-AC is a functional entity based on GGSN, wherein has the address of each SGSN and each GGSN, and the interface between GGSN-AC and SGSN still is defined as gn interface, use GPRS Tunnel Protocol (GTP), this interface to be used to support data communication between GGSN-AC and SGSN; Then need to define a new Gn expansion interface between GGSN-AC and each GGSN, use the GTP Extended Protocol, this interface can be called the Gn-ac interface, and this interface is used to support the data communication between GGSN-AC and GGSN.
During work, the different kinds of business request of the MS that SGSN401,402 receives will converge to convergence router 410 by couple in router 408,409 respectively; The different kinds of business request of the MS that SGSN403 receives will enter couple in router 411, and the service request of flow through convergence router 410 and couple in router 411 enters core router 412 the most at last, and then insert GGSN-AC405.
The APN that each service request access GGSN-AC405 need rely on SGSN to comprise according to each service request is addressed to corresponding GGSN-AC405, concrete addressing method is that SGSN utilizes APN that each service request comprises to generate the domain name of GGSN-AC405, be the domain name mapping of GGSN-AC405 the IP address of GGSN-AC405 by domain name analysis system then, and provide the IP address of GGSN-AC405 with the form of address list, promptly at SGSN401,402, first address in 403 each self-contained GGSN tabulation is the address of GGSN-AC405, like this, SGSN401,402,403 will all insert GGSN-AC405 with all service request that receive.In addition, for fear of cause each SGSN can't find the GGSN-AC405 address to produce professional connected trouble because of certain reason, second, the 3rd address in the GGSN that also each SGSN will the be comprised tabulation is set to GGSN406,407 address respectively, like this, when causing each SGSN can't find the address of GGSN-AC405 because of certain reason, each SGSN still can insert service request among the GGSN406,407 according to the mode of polling.
After all service request that SGSN401,402,403 will receive inserted GGSN-AC405 by gn interface, GGSN-AC405 selected GGSN according to correlation method again, and then by the Gn-ac interface service request is linked among the GGSN of selection.After the service request of MS was accepted by GGSN, the APN that GGSN comprises according to each service request again determined the external network that MS will visit.At this moment, MS just can pass through router, has carried out data communication through SGSN, GGSN-AC405, GGSN and extranets.
When GGSN-AC selects GGSN, can use following method:
1, judges the congestion state of GGSN
GGSN-AC therefrom selects the lighter or not congested GGSN of Congestion Level SPCC by obtaining the congestion state of all GGSN, and corresponding PDP Context request to create is sent to this GGSN.
2, by preferred Route Selection GGSN
GGSN-AC judges currently provides the SGSN of access service and among all GGSN which that preferred route is arranged, and promptly the route distance of this SGSN and which GGSN is nearest, and corresponding PDPContext request to create is sent to this GGSN.
3, the utilization rate of each GGSN of balance
GGSN-AC obtains the current utilization rate of each GGSN, and then therefrom selects the lower GGSN of utilization rate, and corresponding PDP Context request to create is sent to this GGSN by inquiry GGSN state.
4, judge whether GGSN is in malfunction
GGSN-AC regularly inquires about work at present states such as the utilization rate, Congestion Level SPCC of each GGSN, and each status poll all can obtain the corresponding response of each GGSN, and promptly each GGSN reports GGSN-AC with the work at present state.If GGSN-AC through after the status poll repeatedly, has GGSN not respond all the time, then GGSN-AC thinks that this GGSN is in malfunction, and then no longer corresponding PDPContext request to create is sent to this GGSN.
5, according to QoS Information Selection GGSN
GGSN-AC selects to satisfy the GGSN of the QoS that comprises in the customer service request, and corresponding PDP Context request to create is sent to this GGSN.
Above-mentioned GGSN-AC selects the method for GGSN, is the part that GGSN-AC selects the method for GGSN in the practical application, and when practical application, described system of selection can be distinguished use separately, also a plurality of methods or all methods can be used in combination.Simultaneously, GGSN-AC regularly inquires about the work at present state of each GGSN, described GGSN work at present state specifically comprises the total capacity of GGSN, utilization rate, Congestion Level SPCC etc., each status poll GGSN-AC can obtain the corresponding response of each GGSN, it is the total capacity that each GGSN reports, utilization rate, Congestion Level SPCC etc., GGSN-AC stores with the form of the GGSN workshation state table operating state with each GGSN, and after each status poll obtains responding, carry out the GGSN state and upgrade, promptly the work at present state that reports with each GGSN covers the operating state that once reports before each GGSN.
At this moment, to carry out data communication if insert MS and another MS that inserts SGSN402 of SGSN401, then the data route be from SGSN401 through couple in router 408, convergence router 410, core router 412 to GGSN-AC405, GGSN-AC405 and then from GGSN406,407, select one according to above-mentioned system of selection, suppose that the utilization rate of GGSN406 is relatively low and nearer with SGSN401,402 route, then GGSN406 is preferred GGSN.So follow-up data route is to arrive SGSN402 from GGSN406 through convergence router 410, couple in router 409, this shows that data are only passed through core router 412 once, i.e. the situation of data backflow has not had; Simultaneously, because of GGSN-AC405 selects according to each GGSN state, so insert the desired QoS of the service request of corresponding GGSN guarantee has been arranged, and the load of each GGSN also can obtain balance to the request of GGSN access service the time.
In actual applications, GGSN-AC can be an independent device, also can be used as a module and places GGSN or SGSN, makes GGSN-AC and GGSN or SGSN be combined into a device.
By the above as can be seen, PDP Context of the present invention activates, the transmitting data stream journey as shown in Figure 5, and specifically comprise following steps:
Step 501:MS sends PDP Context to SGSN and activates request, and promptly Activate PDPContext Request carries information such as NSAPI, PDP type, APN, qos parameter among this Activate PDP Context Request.NSAPI as the part of TEID, is used to identify PDP Context between SGSN and GGSN; The PDP type comprises PPP type, IP type etc.; APN can be provided to SGSN by MS, and MS can not provide APN to SGSN yet, at this moment, selects default APN by SGSN according to MS user's CAMEL-Subscription-Information; Qos parameter is the quality requirement that the Packet data service of MS appointment will reach.
Step 502:SGSN carries out security inspection and encryption with MS after receiving Activate PDP Context Request, and this step is an optional step.
Step 503:SGSN is according to first address of the GGSN tabulation that it comprised, be addressed to the pairing GGSN-AC in this address by APN, if SGSN can parse the address information of GGSN-AC according to APN, then create TEID for PDP Context, this TEID can be the combination of IMSI and NSAPI, be used for PDPContext of unique identification between SGSN and GGSN-AC, SGSN sends Create PDP Context Request to GGSN-AC then, carry the PDP type among this CreatePDP Context Request, pdp address, APN, qos parameter, TEID, preference pattern etc., wherein, pdp address is the IP address of MS, be optional parameters, Create PDPContext Request can not carry pdp address, at this moment, in follow-up processing procedure, can be MS distributing IP address by GGSN-AC, also the PDN that can be connected by final and MS is MS distributing IP address.
If SGSN can't be addressed to the pairing GGSN-AC in this address by APN according to first address of the GGSN tabulation that it comprised; SGSN then according to other address of the GGSN tabulation that it comprised, is addressed to the pairing GGSN in this address by APN.
If SGSN can parse the address information of GGSN according to APN, then ensuing operation is same as the prior art, be that SGSN creates TEID for PDP Context, this TEID can be the combination of IMSI and NSAPI, be used for PDP Context of unique identification between SGSN and GGSN, SGSN sends Create PDP Context Request to GGSN then, carry the PDP type among this Create PDP ContextRequest, pdp address, APN, qos parameter, TEID, preference pattern etc., wherein, pdp address is the IP address of MS, be optional parameters, Create PDP Context Request can not carry pdp address, at this moment, and in follow-up processing procedure, can be MS distributing IP address by GGSN, also the PDN that can be connected by final and MS be MS distributing IP address.Preference pattern is meant the preference pattern of APN, and promptly APN is that selected by MS or selected by SGSN.If SGSN can't parse the address information of GGSN according to APN, then the PDP Context of SGSN refusal MS initiation activates request.
After step 504:GGSN-AC receives Create PDP Context Request, select which GGSN this CreatePDP Context Request is sent to.
Step 505:GGSN-AC selects a GGSN according to current user mode such as the total capacity of each GGSN, utilization rate, Congestion Level SPCC, and Create PDP Context Request is sent to this GGSN.
After step 506:GGSN receives Create PDP Context Request, determine outside PDN according to APN, and consult QoS, if GGSN can satisfy the quality of service requirement of qos parameter, then return Create PDP Context Response, carry information such as TEID, pdp address, Backbone Bearer agreement, qos parameter among this Create PDP ContextResponse to S GSN.If GGSN can't satisfy the quality of service requirement of qos parameter, the then PDP Context request to create of GGSN refusal SGSN initiation, the PDP Context activation request of SGSN refusal MS initiation then.
After step 507:SGSN receives Create PDP Context Response, in PDP Context, insert NSAPI and GGSN-AC, GGSN address information, be used to identify this PDP Context, and according to qos parameter selection radio priority, return Activate PDP ContextAceept to MS then, carry information such as PDP type, pdp address, qos parameter, radio priority among this Activate PDP Context Aceept.After MS receives Activate PDP Context Accept, the route between foundation and the GGSN, at this moment, MS and PDN have set up the packet data transmission passage, and MS can carry out transfer of data with PDN.
Step 508:MS carries out transfer of data by SGSN, GGSN-AC, GGSN and PDN.
Above-mentioned steps 506,507 also can be used as a step, i.e. the request of GGSN response customer service.
By the above as can be seen, the method of GPRS network side response mobile station service provided by the present invention request, data when having avoided network data transmission reflux, saved route resource, and the business load of balanced each GGSN of energy, in the service competitiveness that improves Virtual network operator, make the user obtain better service.The above only is process of the present invention and method embodiment, in order to restriction the present invention, all any modifications of being made within the spirit and principles in the present invention, is not equal to replacement, improvement etc., all should be included within protection scope of the present invention.
Claims (10)
1, the method for a kind of general packet radio service (GPRS) network side response mobile station service request, it is characterized in that, add GPRS gateway service support node access controller GGSN-AC at network side, in the GPRS gateway service support node GGSN of GPRS service support node SGSN tabulation, first address is made as the address of GGSN-AC, the address of arranging each GGSN more in order; This method is further comprising the steps of:
A. travelling carriage sends the customer service request to SGSN, SGSN sends to the pairing GGSN-AC in first address in self address list with this customer service request, this GGSN-AC links to each other with each SGSN, also link to each other with each GGSN, the address list that has each SGSN and each GGSN among this GGSN-AC also has the status list of representing each GGSN work at present state;
B. the GGSN-AC that receives the customer service request selects a GGSN according to status list and the address list self stored, and the customer service request is sent to this GGSN;
C. after this GGSN receives the customer service request, this customer service request is responded.
2, the method for claim 1, it is characterized in that, among the step a, if SGSN can't search the pairing GGSN-AC in first address in its address list, then according to the GGSN of other address searching correspondence under this first address in its address list, the customer service request is sent to the corresponding GGSN that searches, and directly enter step c.
3, the method for claim 1, it is characterized in that, among the step a, described GGSN-AC links to each other with each SGSN by gn interface, described GGSN-AC links to each other with each GGSN by the Gn expansion interface, this Gn expansion interface is to use the interface of the Extended Protocol of general packet wireless service tunnel protocol, is used to support the data communication between GGSN-AC and each GGSN.
4, the method for claim 1 is characterized in that, the described GGSN-AC of step b selects the method for GGSN to be:
GGSN-AC sets up described status list and selects GGSN based on one in the utilization rate of the route distance between congestion state, SGSN and each GGSN of each GGSN, each GGSN, these four GGSN work at present states of service quality that each GGSN can provide or multinomial.
5, method as claimed in claim 4 is characterized in that, described method according to congestion state selection GGSN further comprises:
GGSN-AC inquires about the congestion state of all GGSN in the described status list, and then selects a lightest GGSN of Congestion Level SPCC, and the customer service request is sent to this GGSN.
6, method as claimed in claim 4 is characterized in that, described method according to route distance selection GGSN further comprises:
Route distance between the SGSN of GGSN-AC each GGSN of comparison and the request of forwarding mobile station service is selected the shortest GGSN of route distance, and the customer service request is sent to this GGSN.
7, method as claimed in claim 4 is characterized in that, described method according to utilization rate selection GGSN further comprises:
GGSN-AC inquires about the utilization rate of each GGSN in the described status list, selects the GGSN that utilization rate is minimum, and the customer service request is sent to this GGSN.
8, method as claimed in claim 4 is characterized in that, described method according to service quality selection GGSN further comprises:
GGSN-AC selects an energy to provide the GGSN of best service quality for the customer service request, and the customer service request is sent to this GGSN.
9, the method for claim 1 is characterized in that, GGSN-AC regularly carries out status poll to each GGSN, and the current state that each GGSN reports is stored in the described status list.
10, the method for claim 1 is characterized in that, GGSN-AC independently is provided with, or is arranged among any SGSN or any GGSN.
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| CNB2004100498795A CN100334895C (en) | 2004-06-25 | 2004-06-25 | Request of side-response movable table service of network in universal group wireless service |
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| CN100334895C true CN100334895C (en) | 2007-08-29 |
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| CN101277249B (en) * | 2007-03-27 | 2015-09-09 | 上海贝尔股份有限公司 | The method of session Route Selection and device |
| CN101500252B (en) * | 2008-01-30 | 2012-07-04 | 中兴通讯股份有限公司 | Route setting method |
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| CN1267433A (en) * | 1997-06-20 | 2000-09-20 | 艾利森电话股份有限公司 | Data packet radio service with enhanced mobility management |
| US20010017856A1 (en) * | 2000-01-20 | 2001-08-30 | Nokia Mobile Phones Ltd. | Address acquisition |
| GB2373409A (en) * | 2000-12-26 | 2002-09-18 | Lg Electronics Inc | Mobile IP service with roaming between GPRS packet networks |
| US20030153296A1 (en) * | 2000-05-16 | 2003-08-14 | Mueeller Hans | Method for transferring a tunnel between nodes in gprs system |
| CN1474610A (en) * | 2002-08-08 | 2004-02-11 | Lg������ʽ���� | Radio data cut-in method |
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Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1267433A (en) * | 1997-06-20 | 2000-09-20 | 艾利森电话股份有限公司 | Data packet radio service with enhanced mobility management |
| US20010017856A1 (en) * | 2000-01-20 | 2001-08-30 | Nokia Mobile Phones Ltd. | Address acquisition |
| US20030153296A1 (en) * | 2000-05-16 | 2003-08-14 | Mueeller Hans | Method for transferring a tunnel between nodes in gprs system |
| GB2373409A (en) * | 2000-12-26 | 2002-09-18 | Lg Electronics Inc | Mobile IP service with roaming between GPRS packet networks |
| CN1474610A (en) * | 2002-08-08 | 2004-02-11 | Lg������ʽ���� | Radio data cut-in method |
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