CN101222767A - Stream-based service quality implementing method and system for mobile IP service - Google Patents
Stream-based service quality implementing method and system for mobile IP service Download PDFInfo
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Abstract
The invention discloses a method for realizing a mobile IP service of flow based QoS (quality of service), involving a mobile IP user terminal AT, a RAN node, an access server or a foreign agent node and a Ha node. The method comprises the following steps that: (a) a flow based QoS information interface is added between the access server or the foreign agent and the HA node; (b) after QoS mapping relationship between up-link and down-link is established and maintained between the access server or the foreign agent and the AT and RAN nodes, the flow based OoS information containing the flow QoS mapping relationship is transferred to the HA node via the OoS information interface. The invention combines the characteristics of MIP service and transfers the flow based QoS information to the HA node by adding a message interface between the access server/ foreign agent node and the HA node, and thus the flow based OoS insurance scope of MIP service and the insurance system of the flow based QoS at the core network side are improved.
Description
Technical field
The present invention relates to service quality in a kind of moving communicating field (QoS, Quality of Service) assurance technology, relate in particular to a kind of mobile IP (MIP, Mobile Intemet Protocol) professional service quality implementation method and system based on stream.
Background technology
Code division multiple access (CDMA, Code-Division Multiple Access) 2000 is except the characteristic of general cdma system such as big capacity and antijamming capability be strong, and be also very outstanding to the support of high-speed data service.In order to make the wireless user can have abundant and high-quality data service, the service quality that HRPD (high rate packet data) (HRPD, High Rate Packet Data) has been introduced based on stream on many service connection basis guarantees.Under this mechanism, user's grouped data is mapped as stream, is carried on different Wi-Fi-packet data serving node (RN-PDSN, Radio Network-Packet Data ServingNode) connection and the airlink.By the stream mapping mechanism, the service quality that system is achieved on link and forward node based on stream guarantees.
And existing service quality realization system based on stream, the foundation of the negotiation of convection current QoS parameter and stream parameter maps relation, maintenance are by access terminal (AT, Access Terminal), radio access network (RAN, Radio Access Network) and PDSN cooperation is finished.
Fig. 1 shows in the prior art stream mapping relations and sets up flow process, and its concrete steps are as follows:
Step 101:AT inserts successfully;
Step 102:AT finds to have an IP who requires service quality to guarantee to flow, and asks the service quality of this stream to guarantee to authorize to radio access network (RAN, Radio Access Network);
Step 103:RAN is to AT authorization service mass parameter;
Step 104:RAN sets up auxilliary the connection to PDSN (Packet Date Serving Node, packet data serving node) request, has the auxilliary stream QoS parameter information that connects in the request;
Step 105:PDSN sets up auxilliary connection and answers to the RAN response;
Step 106:AT sends Resv message to PDSN, the indication filter assemblies;
Step 107:PDSN sets up the mapping relations between flow filter and the stream QoS parameter, and sends the Resv confirmation message to AT.
Quality of services for users information be by PDSN with HAAA (Home Authentication, Authorization and Accounting, ownership place authentication authorized charging server) Authentication Authorization process in obtain and pass to RAN's.RAN flows service quality authorization based on this QoS of customer parameter area, and by A11 message the stream QoS parameter that the user asks and system guarantees is passed to PDSN.
Similarly, the stream mapping relations are safeguarded flow process in the prior art, comprise adding stream or deletion stream and upgrading stream parameter etc., and also be to finish by the cooperation of AT, RAN and PDSN, just do not exemplified one by one at this.Based on above-mentioned mechanism, the service quality based on stream of wireless side is guaranteed, the current stream QoS parameter of the user information that the stream service quality of core-network side guarantees then to depend on the PDSN is preserved.
Above-mentioned stream service quality assurance mechanism is applicable to the HRPD data traffic flows, comprises simple IP business and mobile IP service.But consider the particularity of mobile IP service, can find for mobile IP service, to also have the access and the data transmission procedure of an important network node participating user, i.e. home agent (HA, Home Agent).
Fig. 2 a, Fig. 2 b show mobile IP service uplink and downlink transfer of data flow process respectively.Wherein, transmitting uplink data flow process concrete steps are as follows:
Step 201a: mobile IP user terminal AT sends upstream data to PDSN by RAN;
Whether step 202a:PDSN consults reverse tunnel according to the user and does subsequent treatment; If-I AT consults reverse tunnel, then upstream data is carried out tunnel encapsulation, and be sent to HA by the tunnel;-II otherwise directly forward the data to the Internet Internet.
Downlink data transmission flow process concrete steps are as follows:
Step 201b:HA attracts the downlink data of registered users;
Step 202b:HA forwards the data to PDSN by the tunnel;
Step 203b:PDSN separates tunnel encapsulation to downlink data, and is transmitted to the mobile IP user terminal by RAN.
Can see that from above-mentioned flow process HA is a very important network element the mobile IP user data transmission procedure, network element especially more is absolutely necessary in the downlink data transmission process.Imagination, if can on HA, keep the current stream quality of service information of user, so just can be for mobile IP service better in the service quality assurance of implementing on the transmission path of PDSN and HA and on this forward node of HA based on stream.But also do not realize such imagination at present in the prior art.
Summary of the invention
Technical problem to be solved by this invention provides a kind of mobile IP service and realizes system and method based on the service quality of stream, can remedy the defective of above-mentioned prior art, thus the perfect service quality guarantee system of mobile IP service core-network side based on stream.
In order to solve the problems of the technologies described above, the invention provides the service quality implementation method of a kind of mobile IP service based on stream, relate to mobile IP user terminal AT, radio access network RAN node, access server or Foreign Agent node and home agent HA node, said method comprising the steps of:
(a) between access server or Foreign Agent and HA, increase stream service quality QoS information interface;
(b) access server or Foreign Agent are after setting up with AT and RAN node and safeguarding uplink and downlink stream QoS mapping relations, and the stream QoS information that will contain stream QoS mapping relations by the QoS information interface passes to the HA node.
Further, step (b) stream QoS mapping relations are flow filter assembly and the corresponding relation that flows the Qos parameter.
Further, step (b) comprises step:
(b1) access server or Foreign Agent node send registration update message to the HA node, carry stream QoS information in registration update message;
(b2) the HA node is preserved stream QoS mapping relations in this locality, and returns the affirmation response message.
Further, the flow filter assembly is used for the identification packet feature, and this grouping feature comprises IP address, port numbers and the agreement of grouping; By the flow filter assembly packet map is arrived stream.
Further, step (b) QoS information interface is implemented by the extended field in registration update message and the affirmation response message thereof.
Further, step (b) safeguards that uplink and downlink stream QoS mapping relations comprise interpolation stream, access server or Foreign Agent node are judged the newly-built stream of needs according to the qos parameter information of all entrained the message that receives from RAN node streams and the stream mapping relations of having preserved, then flow the QoS mapping relations, and in stream QoS information, add the information of newly-built stream at local update.
Further, step (b) safeguards that uplink and downlink stream QoS mapping relations comprise deletion stream, access server or Foreign Agent node are judged needs deletion stream according to the Qos parameter information of all entrained the message that receives from RAN node streams and the stream QoS mapping relations of having preserved, then flow the QoS mapping relations at local update, and the information of in stream QoS information, deleting deleted stream.
Further, step (b) safeguards that uplink and downlink stream QoS mapping relations comprise renewal stream parameter, access server or Foreign Agent node are judged the QoS information that the needs modification is flowed according to the Qos parameter information of all entrained the message that receives from RAN node streams and the stream QoS mapping relations of having preserved, then flow the QoS mapping relations, and upgrade stream QoS information at local update.
In order to solve the problems of the technologies described above, the invention provides the service quality realization system of a kind of mobile IP service based on stream, comprise mobile IP user terminal AT, radio access network RAN node, access server or Foreign Agent node and home agent HA node; Wherein, AT, RAN node and access server or Foreign Agent node are used for mutually cooperation and finish and set up and safeguard uplink and downlink stream service quality QoS mapping relations; Between access server or Foreign Agent node and HA node, increase stream QoS information interface is arranged, be used for after stream QoS mapping relations are set up or safeguarded, the stream QoS information that access server or Foreign Agent node will contain stream QoS mapping relations passes to the HA node.
Further, stream QoS mapping relations are flow filter assembly and the corresponding relation that flows the Qos parameter.
Further, the flow filter assembly is used for the identification packet feature, and grouping feature comprises IP address, port numbers and the agreement of grouping; This flow filter assembly is used for described packet map to described stream.
Further, the QoS information interface is implemented by the extended field in registration update message and the affirmation response message thereof.
Further, safeguard uplink and downlink stream QoS mapping relations comprise add stream, deletion stream and upgrade in the stream parameter any one or multiple.
Compared with prior art, the present invention is in conjunction with the characteristics of mobile IP service, by increasing access server/Foreign Agent node and home agent HA messages between nodes interface, to flow quality of service information and pass to the HA node, thereby enlarged the scope that mobile IP service guarantees based on the service quality of stream, the perfect thus service quality guarantee system of mobile IP service core-network side based on stream.
Description of drawings
Fig. 1 is that the stream mapping relations are set up the embodiment schematic flow sheet in the prior art;
Fig. 2 a is a mobile IP service upstream data embodiment schematic flow sheet in the prior art;
Fig. 2 b is a mobile IP service downlink data embodiment schematic flow sheet in the prior art;
Fig. 3 is that the stream mapping relations are set up the embodiment schematic flow sheet among the present invention;
Fig. 4 is that the stream mapping relations are safeguarded (adding stream) embodiment schematic flow sheet among the present invention;
Fig. 5 is that the stream mapping relations are safeguarded (upgrading the stream parameter) embodiment schematic flow sheet among the present invention;
Fig. 6 is that the stream mapping relations are safeguarded (deletion stream) embodiment schematic flow sheet among the present invention;
Fig. 7 is the application example schematic flow sheet that guarantees based on the service quality that flows among the present invention.
Embodiment
Mobile IP service of the present invention is realized system based on the service quality of stream, comprises mobile IP user terminal AT, radio access network node R AN, access server PDSN/ Foreign Agent node (FA, Foreign Agent) and home agent HA node.Method core of the present invention is in conjunction with the mobile IP service characteristics, between access server/Foreign Agent and home agent HA, increase stream quality of service information interface, make access server/Foreign Agent after setting up with mobile IP user terminal, wireless network node and safeguarding uplink and downlink stream QoS mapping relation, can pass to the HA node by the stream quality of service information (comprise the uplink and downlink flow filter or flow QoS parameter) that this information interface will contain these stream mapping relations.Wherein, this information interface can be implemented by register update and the extended field in replying.
Below in conjunction with the drawings and specific embodiments technique scheme of the present invention is described in further detail.
As shown in Figure 3, set up the embodiment flow process for stream mapping relations among the present invention, its concrete steps are as follows:
Step 301: mobile IP terminal AT inserts successfully;
Step 302:AT finds to have an IP who requires Qos to guarantee to flow, and asks the Qos of this stream to guarantee to authorize to RAN;
Step 303:RAN authorizes the Qos parameter to AT;
Step 304:RAN sets up auxilliary the connection to the PDSN/FA request, has the auxilliary stream QoS parameter information that connects in the message;
Step 305:PDSN/FA sets up auxilliary connect and to the RAN echo reply;
Step 306:AT sends Resv message to PDSN/FA, and indication request Qos guarantees the corresponding filter assemblies of stream;
Filter assemblies is used for the identification packet feature, such as but not limited to IP address, port numbers, the agreement of grouping; Can be by filter assemblies with packet map to stream.
Step 307:PDSN/FA sends the Resv confirmation message to AT;
At this moment, on PDSN/FA, just set up complete stream QoS mapping relation, i.e. flow filter assembly and the corresponding relation that flows the Qos parameter.
Step 308:PDSN/FA sends the registration update message message to HA, carries the mapping relations between flow filter assembly and the stream Qos parameter in the extension of message field;
Step 309:HA keeps flow filter and stream Qos parameter maps relation in this locality, and the renewal of re-injection volume is replied.
Compare with prior art shown in Figure 1, the present invention has increased step 308 and step 309, after access server/Foreign Agent node is set up the stream mapping relations, by registration update message local newly-built stream mapping relations is passed to the home agent node.
As shown in Figure 4, safeguard (adding stream) embodiment flow process for stream mapping relations among the present invention, its concrete steps are as follows:
Step 401: mobile IP terminal AT finds to have an IP who requires Qos to guarantee to flow, and sets up new stream to the RAN request;
Step 402:RAN authorizes the Qos parameter to AT;
Step 403:RAN sends refresh message to PDSN/FA, carries the Qos parameter information (comprising the Qos parameter information that newly adds stream) of all streams in the message;
Step 404:PDSN/FA judges the newly-built stream of needs according to the stream Qos information of having stored, upgrades the stream mapping relations and adds newly-built stream information, responds then and answers message;
Step 405:AT sends Resv message to PDSN/FA, requires to upgrade the traffic identifier filter;
Filter assemblies is used for the identification packet feature, such as but not limited to IP address, port numbers, the agreement of grouping; Can be by filter assemblies with packet map to stream.
Step 406:PDSN/FA sends the Resv confirmation message to AT;
Step 407:PDSN/FA sends the register update message to HA, and flow filter assembly and parameter maps relation carry local update in the extension of message field after are comprising newly adding flow filter assembly and parameter maps thereof relation;
Step 408:HA concerns at local retention system current mandate flow filter assembly and parameter maps, and returns register update and reply.
Compared with prior art, present embodiment has increased step 407 and step 408, after access server/Foreign Agent node updates stream mapping relations, by registration update message the stream mapping relations of local update is passed to the home agent node.
As shown in Figure 5, safeguard (upgrading the stream parameter) embodiment flow process for stream mapping relations among the present invention, its concrete steps are as follows:
Step 501:RAN makes amendment to the QoS information of the current stream of user according to quality of services for users QoS archives;
Step 502:RAN sends refresh message to PDSN/FA, carries the quality of service information (the stream quality of service information that comprises modification) of all streams in the message;
Step 503:PDSN/FA is retained in this locality according to the quality of service information of a stream of stream QoS information judgement needs modification of having stored with the information of revising, and responds then and answers message;
Step 504:PDSN/FA sends the register update message to HA, carries local flow filter assembly and the parameter maps relation of revising after upgrading in the extension of message field;
Step 505:HA keeps flow filter assembly and parameter maps relation in this locality, and returns register update and reply.
Compared with prior art, present embodiment has increased step 504 and step 505, after access server/Foreign Agent node updates stream mapping relations, by registration update message the stream mapping relations of local update is passed to the home agent node.
As shown in Figure 6, safeguard (deletion stream) embodiment flow process for stream mapping relations among the present invention, its concrete steps are as follows:
Step 601: a stream of having set up is deleted in mobile IP terminal AT decision, sends the stream removal request to RAN;
Step 602:RAN returns deletion and replys;
Step 603:RAN sends refresh message to PDSN/FA, carries the QoS information (not comprising the service QoS information that will delete stream) of all streams in the message;
Step 604:PDSN/FA is according to the quality of service information of a stream of stream quality of service information judgement needs deletion of having stored, then echo reply message;
Step 605:PDSN/FA sends the register update message to HA, carries flow filter and parameter maps relation (not comprising the QoS information that will delete stream) behind the local update in extension of message;
Step 606:HA keeps flow filter and parameter maps relation in this locality, and returns register update and reply.
Compared with prior art, present embodiment has increased step 605 and step 606, after access server/Foreign Agent node updates stream mapping relations, by registration update message the stream mapping relations of local update is passed to the home agent node.
It below is the application example flow process that the present invention is based on the service quality assurance of stream.Concrete steps are as follows:
Step 701:AT sets up a kind of stream mapping relations with Fig. 3 mode, and the flow filter component identification is real-time stream media protocol (RTSP, a Real Time Streaming Protocol) business, and qos parameter is low time delay;
Step 702:HA is when transmitting user's downlink data message, it is professional and the RTSP message put into the formation that other message (as the HTTP message) of the higher formation of priority, this user is then put into lower priority to go out RTSP by the flow filter component recognition, guarantees the preferential forwarding of RTSP message with this;
Step 703:HA stamps different differentiated service code point (DSCP, Differentiated Service Code Point) for the user's message outer layer tunnel, distinguishes RTSP message and other message of user (as the HTTP message) with this;
Step 704:HA and PDSN distinguish RTSP message and other message of user (as the HTTP message) along the node on road by DSCP, thereby guarantee the preferential forwarding of RTSP message on link between HA and the FA.
By this application example as can be seen, owing to the priority level that the participation that HA is arranged makes network can distinguish some service messages is correspondingly handled, for example the RTSP service message has precedence over the HTTP service message and sends, thereby makes the QoS of customer based on stream obtain reliable assurance.
Can draw in sum, mobile IP service of the present invention based on the service quality implementation method step of stream is:
(a) between access server or Foreign Agent and home agent HA, increase stream service quality QoS information interface;
(b) access server or Foreign Agent will flow QoS information (comprising uplink and downlink flow filter assembly and stream qos parameter and corresponding relation thereof) by this QoS information interface and pass to the HA node after setting up with mobile IP user terminal, wireless network node and safeguarding uplink and downlink stream QoS mapping relation.
Wherein, the QoS information interface can but be not limited to by register update and the extended field in replying and implement.
The present invention is by the interacting message between access server/foreign agent services device and the home agent server, the user of system authorization flowed quality of service information be delivered to home agent server.By the way, enlarge and the perfect service quality guarantee system that flows in the prior art, make mobile IP service guarantee in the service quality of core-network side better implement based on stream.
Certainly; the present invention also can have other various embodiments; under the situation that does not deviate from spirit of the present invention and essence thereof; those of ordinary skill in the art work as can make various corresponding changes and distortion according to the present invention, but these corresponding changes and distortion all should belong to the protection range of the appended claim of the present invention.
Claims (13)
1. a mobile IP service is based on the service quality implementation method that flows, relate to mobile IP user terminal AT, radio access network RAN node, access server or Foreign Agent node and home agent HA node, it is characterized in that, said method comprising the steps of:
(a) between described access server or Foreign Agent and described HA, increase stream service quality QoS information interface;
(b) described access server or Foreign Agent are after setting up with described AT and described RAN node and safeguarding uplink and downlink stream QoS mapping relations, and the stream QoS information that will contain described stream QoS mapping relations by described QoS information interface passes to described HA node.
2. in accordance with the method for claim 1, it is characterized in that the described stream QoS of step (b) mapping relations are flow filter assembly and the corresponding relation that flows the Qos parameter.
3. in accordance with the method for claim 2, it is characterized in that step (b) comprises step:
(b1) described access server or Foreign Agent node send registration update message to described HA node, carry described stream QoS information in described registration update message;
(b2) described HA node is preserved described stream QoS mapping relations in this locality, and returns the affirmation response message.
4. in accordance with the method for claim 2, it is characterized in that described flow filter assembly is used for the identification packet feature, described grouping feature comprises IP address, port numbers and the agreement of grouping; By described flow filter assembly described packet map is arrived described stream.
5. in accordance with the method for claim 3, it is characterized in that the described QoS information interface of step (b) is implemented by the extended field in described registration update message and the described affirmation response message thereof.
6. in accordance with the method for claim 1, it is characterized in that, the described uplink and downlink stream QoS mapping relations of safeguarding of step (b) comprise interpolation stream, described access server or Foreign Agent node are judged the newly-built stream of needs according to the qos parameter information of all entrained the message that receives from described RAN node streams and the described stream mapping relations of having preserved, then in the described stream of local update QoS mapping relations, and in the described information that flows the described newly-built stream of adding in the QoS information.
7. in accordance with the method for claim 1, it is characterized in that, the described uplink and downlink stream QoS mapping relations of safeguarding of step (b) comprise deletion stream, described access server or Foreign Agent node are judged needs deletion stream according to the Qos parameter information of all entrained the message that receives from described RAN node streams and the described stream QoS mapping relations of having preserved, then in the described stream of local update QoS mapping relations, and in the described information that flows the deleted stream of deletion in the QoS information.
8. in accordance with the method for claim 1, it is characterized in that, the described uplink and downlink stream QoS mapping relations of safeguarding of step (b) comprise renewal stream parameter, the Qos parameter information of described access server or Foreign Agent node basis all entrained streams from the message that described RAN node receives and the described stream QoS mapping relations of having preserved are judged the QoS information that the needs modification is flowed, then in the described stream of local update QoS mapping relations, and upgrade described stream QoS information.
9. a mobile IP service is realized system based on the service quality that flows, and comprises mobile IP user terminal AT, radio access network RAN node, access server or Foreign Agent node and home agent HA node; Wherein, described AT, described RAN node and described access server or Foreign Agent node are used for cooperation mutually to be finished foundation and safeguards uplink and downlink stream service quality QoS mapping relations, it is characterized in that, between described access server or Foreign Agent node and described HA node, increase stream QoS information interface is arranged, be used for after described stream QoS mapping relations are set up or safeguarded, the stream QoS information that described access server or Foreign Agent node will contain described stream QoS mapping relations passes to described HA node.
10. according to the described system of claim 9, it is characterized in that described stream QoS mapping relations are flow filter assembly and the corresponding relation that flows the Qos parameter.
11., it is characterized in that described flow filter assembly is used for the identification packet feature according to the described system of claim 10, described grouping feature comprises IP address, port numbers and the agreement of grouping; Described flow filter assembly is used for described packet map to described stream.
12., it is characterized in that described QoS information interface is implemented by the extended field in registration update message and the affirmation response message thereof according to each described system of claim 9 to 11.
13. according to each described system of claim 9 to 11, it is characterized in that, described safeguard uplink and downlink stream QoS mapping relations comprise add stream, deletion stream and upgrade in the stream parameter any one or multiple.
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101923471A (en) * | 2010-08-26 | 2010-12-22 | 北京天融信科技有限公司 | Network event processing method |
| WO2014075258A1 (en) * | 2012-11-15 | 2014-05-22 | Qualcomm Incorporated | Apparatus and method for avoiding data loss associated with a qos reservation failure |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| GB2366480A (en) * | 2000-08-21 | 2002-03-06 | Lucent Technologies Inc | Method of operating a third generation mobile communication system |
| JP3526032B2 (en) * | 2000-11-08 | 2004-05-10 | 日本電気株式会社 | Mobile network and IP packet transfer method |
| CN100455111C (en) * | 2005-07-09 | 2009-01-21 | 华为技术有限公司 | Method and system of realizing R3 interface shift based on resource optimization |
| CN101043521A (en) * | 2006-03-20 | 2007-09-26 | 华为技术有限公司 | Method for negotiating QoS configuration download |
| CN101080090A (en) * | 2006-05-26 | 2007-11-28 | 株式会社日立制作所 | Method, system and device for network switching of mobile terminal |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN101923471A (en) * | 2010-08-26 | 2010-12-22 | 北京天融信科技有限公司 | Network event processing method |
| WO2014075258A1 (en) * | 2012-11-15 | 2014-05-22 | Qualcomm Incorporated | Apparatus and method for avoiding data loss associated with a qos reservation failure |
| US9185596B2 (en) | 2012-11-15 | 2015-11-10 | Qualcomm Incorporated | Apparatus and method for avoiding data loss associated with a QoS reservation failure |
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