CN100366017C

CN100366017C - Method for managing path in communication system

Info

Publication number: CN100366017C
Application number: CNB2005101055106A
Authority: CN
Inventors: 袁立平; 陈靖; 周艳
Original assignee: Huawei Technologies Co Ltd
Current assignee: Huawei Technologies Co Ltd
Priority date: 2005-09-23
Filing date: 2005-09-23
Publication date: 2008-01-30
Anticipated expiration: 2025-09-23
Also published as: CN1863117A

Abstract

The present invention relates to a method for path management in a communication system, which mainly comprises that both party entities which participate in the path management simultaneously merge the other party entity path management request and self path management request to be a management rule of the party entities after the other party entity path management request is received, and response is returned to the other party entity; when one party entity receives the respond, and the other party entity is replied whether to execute corresponding path management operation for the other party entity or not. The present invention provides a corresponding solution for a probable collision problem in path management process of path creation, path modification, path release, etc. in a WiMAX (microwave access global intercommunication) network, and thereby, network error caused by path management collision in the WiMAX system is avoided. Therefore, the realization of the present invention can improve the management efficiency and the reliability of a WiMAX system path effectively.

Description

The method of path management in the communication system

Technical field

The present invention relates to communication technical field, relate in particular to the method for path management in a kind of communication system.

Background technology

Along with the extensive use of the flourish and wireless network of internet service, the WiMAX system has obtained a large amount of application and concern with its good wireless access characteristic.How the WiMAX system is applied to the mobile subscriber, better provides Packet Service between network and the mobile subscriber to transmit or the function of route becomes the new focus of industry research.

WiMAX network architecture system as shown in Figure 1.

Among Fig. 1, the WiMAX network architecture mainly comprises: ASN (access service network), CSN (connectivity serving network) and MSS (mobile subscriber station).

ASN is defined as: gather for the WiMAX terminal provides the network function of wireless access service, comprised BS (base station) and ASN-GW (ASN-gateway) network element among the ASN.The necessary function that ASN provides comprises: the function of BS and the function of ASN-GW.

The function of BS mainly comprises: functions such as the L2 of BS and MSS is connected, the compression of RRM, measurement and power control, the data of eating dishes without rice or wine and encryption.

The function of ASN-GW mainly comprises: for MSS authentication function provides client functionality, support the network of NSP (network reset provider) to find and select, for MSS provides Relay (relaying) function such as the IP address assignment of L3 information, functions such as RRM.

The unnecessary functions that ASN provides comprises: switch in the ASN, tunnel management between MSS paging and location management, the ASN-CSN, be equivalent to FA (external agent), vision location registration etc. in the mobile IP technology.

CSN is defined as: for the WiMAX terminal provides IP Connection Service.The function that CSN mainly provides comprises: the IP address assignment of MSS, Internet insert, AAA proxy (authentication agency) or server, based on user's authorization control, ASN tunnel to CSN, be equivalent to that tunnel, the switching between the ASN, the various WiMAX between the CSN serves as location-based business, multi-medium multi-packet broadcasting service, broadcasting service, IP Multimedia System business etc. under the charging of HA (home agent), WiMAX user in the mobile IP technology and the clearing between the operator, the roaming condition.

MSS is a mobile subscriber equipment, and the user inserts the WiMAX network by MSS.The BS that MSS uses when inserting the WiMAX network is called as Serving BS (serving BS broadcasts).

For using certain serving BS broadcasts to insert the MSS of WiMAX network, and the ASN-GW that the R6 interface is arranged between this serving BS broadcasts, be called as Serving ASN-GW (service ASN-GW), in Fig. 1, ASN-GW1 is to use BS1 or BS2 to insert the service ASN-GW of the MSS of WiMAX network.

Provide the ASN-GW of the Interface R3 between the R3 of the HA from ASN to CSN to be called AnchorASN-GW (anchor ASN-GW), as the anchor ASN-GW among Fig. 1 is a logic entity, and it can be present in the identical or different physical entity with logic entities such as ASN-GW1, ASN-GW2.When anchor ASN-GW was present in the identical physical entity with service ASN-GW, interface between the two belonged to the device interior interface, not necessarily will use the standard Interface R4.

From data surface, the grouping busihess data of descending MSS newspaper, is sent among the ASN by the Interface R3 between the anchor ASN-GW HA and the ASN from the HA of CSN.After the grouping busihess data newspaper of descending MSS enters ASN, be sent to the service ASN-GW of MSS through the Interface R4 of ASN inside, and send on the MSS through the R6 interface between inner ASN-GW of ASN and the BS and the R1 interface between BS and the MSS data MSS by service ASN-GW.Upstream data then is delivered to the CSN along opposite path from MSS and reaches end subscriber.

As mentioned above, the data path (Data Path) of corresponding uplink and downlink is all arranged for each Business Stream of each MSS in the interface of ASN inside, and these data paths can be set up according to the qos requirement of Business Stream and the employing mode of data path when Business Stream is set up.When this service ending, when just Business Stream is ended, just need to discharge corresponding data path.

At NWG Stage2 (the 2nd stage of network work group) path management has been defined following content:

The path request to create is used to create MSS one paths or a MSS stream, and this message also is used for MSS is registered to the multicast group.

For the data flow of clean culture, this former pragmatic with occur in BS to MSS of ASNGW registration, in case the MMS registration is finished, this primitive can continue to make the data flow that is used for registering MSS.

In order to support ip multicast, this primitive is used to refer to ASN GW, and the MSS of appointment is a member in the multicast group, and actual multicast path constructive process need be guaranteed correct mandate and charging.

The path request to create generally mails to ASN GW by serving BS broadcasts, and notice Makes Path betwixt, mails to BS from ASN GW in the time of also can needing in the transfer of data that network side is initiated.

Receive path request to create message, ASN GW gives serving BS broadcasts according to the quality of service requirement of data flow with the data forwarding that mails to MSS, for example, if can realize that ASN GW receives the path request to create of repetition, should abandon quietly by the routing table content is set.

If ASN GW receives the information identical with already present path, but, then should forward the data to new serving BS broadcasts from the path request to create that different serving BS broadcasts is sent.

The path is created response primitive and is used for response request message, and the information that response message comprises should be corresponding with request message.

The path is created and is confirmed that primitive is used to confirm response primitive, and the expression path is created (creating again) process and finished.

The path discharges request and mails to ASN GW by MSS, and the expression data flow does not re-use.Also can mail to BS notice BS release way resource by ASN GW.Can discharge one or more Business Streams of MS simultaneously, if only comprise the MSS sign in message, then expression discharges all Business Streams of MS.When receiving that the path discharges request, ASNGW carries out and creates opposite action, for example deletes the routing table corresponding contents.

The path discharges to respond and is used for finishing to discharge flow process, allows simultaneously to discharge one or more Business Streams among the MS, if the MSS sign only is provided in the primitive, represents that then all Business Stream release of MS finishes.

As can be seen, in the processing of afore mentioned rules, do not provide corresponding solution for the path management conflict that may occur in the network, thereby, when conflict appears in path management, then may cause occurring mistake in the network, and then influence network transmission performance.

Summary of the invention

In view of above-mentioned existing in prior technology problem, the purpose of this invention is to provide the method for path management in a kind of communication system, effectively avoiding in the communication system, thereby improve the reliability of network because of the path management conflict causes the mistake that occurs in the network.

The objective of the invention is to be achieved through the following technical solutions:

The invention provides the method for path management in a kind of micro-wave access to global intercommunication communication system, comprising:

A, in communication system, the both sides' entity that participates in path management simultaneously is after the path management request of receiving the other side's entity, the path management request and the path management request of itself of the other side's entity are merged the back as both sides' physical path rule, and return response to the other side's entity;

After B, side's entity are received response, reply the other side's entity, whether carry out corresponding path management operation to notify the other side's entity.

Described path management request comprises: request is revised in path request to create and/or path.

Described steps A comprises:

A1, with the maximum set of the path management request of both sides' entity as both sides' physical path rule, described maximum set comprises: choose the high parameter sets of both sides' requested service quality; Or,

A2, when the priority of both sides' entity not simultaneously, with the path management request of the high side's entity of priority as both sides' physical path rule.

Described step B comprises:

B1, after side's entity is received response, affirmation can't be satisfied requirement itself, initiates to the other side's entity then that request is revised in the path or the path discharges request; Or,

B2, after side's entity is received response, affirmation can be satisfied requirement itself, then initiates to carry out the response of corresponding path management operation to the other side's entity.

Described step B1 comprises:

Initiate the path when discharging request when side's entity to the other side's entity, at first discharge and finish, notify local release of the other side's entity to finish then in this locality; Or

Simultaneously initiate the path when discharging request to the other side's entity when both sides' entity, both sides' entity discharges in this locality to be finished, and notifies local release of the other side's entity to finish then.

Method of the present invention also comprises: when a kind of entity receive that two or more entities initiate at the request of same session the time, then this entity and initiator's entity are all as both sides' entity execution in step A of participation path management and the process of step B.

Method of the present invention also comprises:

When the path management request of sending when the other side's entity is identical with the path management request of itself, then carry out corresponding path management operation according to the path management request of newly receiving.

Method of the present invention also comprises: when carrying out corresponding path management and being operating as request to create, then need to remove original respective path information before this.

Communication system of the present invention comprises: micro-wave access to global intercommunication WiMAX system.

As seen from the above technical solution provided by the invention, the present invention provides corresponding solution for the collision problem that may occur in the path management processes such as the path establishment in the WiMAX network, modification, release, thereby can avoid causing occurring in the network mistake because of the path management conflict in the WiMAX system.

Therefore, realization of the present invention can effectively improve the path management efficient and the reliability of WiMAX system communication, promptly can improve the fault-tolerance and the compatibility of WiMAX network.

Description of drawings

Fig. 1 is a WiMAX network architecture system schematic diagram;

Fig. 2 is the flow chart 1 of method of the present invention;

Fig. 3 is the flow chart 2 of method of the present invention;

Fig. 4 is the flow chart 3 of method of the present invention;

Fig. 5 is the flow chart 4 of method of the present invention.

Embodiment

The method of path management in a kind of communication system of the present invention, be specially: in communication system, the both sides' entity that participates in path management simultaneously is after the path management request of receiving the other side's entity, the path management request and the path management request of itself of the other side's entity are merged the back as both sides' physical path rule, and respond to the request of sending of the other side's entity; After one side's entity is received the request response, reply the other side's entity and whether carry out corresponding path management operation.Described path management request comprises: request is revised in path request to create and/or path.Even comprise that the path discharges request and the conversation request of setting up a plurality of entities.

The present invention is applicable to various communication systems, is particularly useful in the WiMAX system.

Merge way management request mode also has multiple, can be with the maximum set of the path management request of both sides' entity as both sides' physical path rule; The priority that also can work as both sides' entity not simultaneously, with the path management request of the high side's entity of priority as both sides' physical path rule.In conjunction with follow-up processing mode, divide following execution mode to be illustrated:

Execution mode one

Two path managing entities are initiated the path visioning procedure to the other side's entity simultaneously, and its concrete process specifically comprises as shown in Figure 2:

Step 21, two path managing entities are initiated path request to create message to the other side's entity simultaneously; And wait for that the path establishment responds;

When waiting response to be created, step 22, side's entity receive the identical path request to create message that the other side's entity is sent;

Step 23, the maximum set of the path request to create of both sides' entity is created rule as both sides' physical path; Beam back the path and create response;

Described maximum set can for: choose the high parameter sets of both sides' requested service quality;

The requirement that judges whether to satisfy oneself after the response is created in the path of step 24, the other side's entity of receiving, and execution in step 25 in this way, otherwise, execution in step 26;

Step 25, create described path;

Step 26, initiate to the other side's entity that request is revised in the path or access path discharges flow process.

Execution mode two

In the execution mode one, the higher priority of a certain side's entity is given in rule or internetwork agreement that the network operator sets, and its concrete processing procedure comprises as shown in Figure 3:

Step 31, two path managing entities are initiated path request to create message to the other side's entity simultaneously; And wait for that the path establishment responds;

When waiting response to be created, step 32, side's entity receive the identical path request to create message that the other side's entity is sent;

Whether the priority of step 33, judgement itself is higher than the priority of the other side's entity, in this way, and execution in step 34, otherwise execution in step 36,

Step 34, creating as both sides' physical path of path request to create own is regular; Beam back the path and create response;

After step 35, the other side's entity receive that response is created in the path, create rule as the path request to create of oneself initiating with both sides' physical path;

Step 36, the other side's physical path request to create is created rule as both sides' physical path, and create the path request to create of rule as oneself initiation with both sides' physical path;

Step 37, create described path.

Execution mode three

Two path managing entities are initiated the path modification process to the other side's entity simultaneously, and its concrete process comprises following process as shown in Figure 2:

Step 41, two path managing entities are initiated the path modify request messages to the other side's entity simultaneously; And wait for that the path modification responds;

Step 42, side's entity are being waited for and are being received the identical path modify request messages that the other side's entity is sent when revising response;

Step 43, the maximum set of the path of both sides' entity being revised request are revised rule as both sides' physical path; Beam back the path and revise response;

The requirement that judges whether to satisfy oneself after the response is revised in the path of step 44, the other side's entity of receiving, and execution in step 45 in this way, otherwise, execution in step 46;

Step 45, revise described path;

Step 46, initiate to the other side's entity that request is revised in the path or access path discharges flow process.

Execution mode four

In the execution mode three, the higher priority of a certain side's entity is given in rule or internetwork agreement that the network operator sets, and its concrete processing procedure comprises as shown in Figure 5:

Step 51, two path managing entities are initiated the path modify request messages to the other side's entity simultaneously; And wait for that the path modification responds;

Step 52, side's entity are being waited for and are being received the identical path modify request messages that the other side's entity is sent when revising response;

Whether the priority of step 53, judgement itself is higher than the priority of the other side's entity, in this way, and execution in step 54, otherwise execution in step 56,

Step 54, revising as both sides' physical path of path modification request own is regular; Beam back the path and revise response;

After step 55, the other side's entity receive that response is revised in the path, revise rule with both sides' physical path and revise request as the path of oneself initiating;

Step 56, the other side's physical path is revised request revise rule, and revise rule with both sides' physical path and ask as the own path modification of initiating as both sides' physical path;

Step 57, revise described path.

In the foregoing description, the path that the step 46 among the step 26 among Fig. 2 and Fig. 4 relates to discharges flow process and is specially side's entity and at first discharges in this locality and finish, and notifies local release of the other side's entity to finish then.

When both sides' entity access path discharges flow process, when the other side's entity was initiated path release request, both sides' entity then discharges in this locality to be finished, and notifies local release of the other side's entity to finish then.

When two or more entities are initiated same conversation request, then each is all treated as the both sides' entity that participates in path management entity, because of wherein comprising the path request to create, also may comprise path modification request, both sides' entity of any a pair of participation path management that this is is all finished corresponding path management according to the process of execution mode one to four.

Also have side's entity in the above-mentioned process and receive that the other side's entity initiation path management flow process is identical with already present path, at this moment should be as the criterion, remove local original routing information, rebulid the path with the path management request of newly receiving.

The above; only for the preferable embodiment of the present invention, but protection scope of the present invention is not limited thereto, and anyly is familiar with those skilled in the art in the technical scope that the present invention discloses; the variation that can expect easily or replacement all should be encompassed within protection scope of the present invention.Therefore, protection scope of the present invention should be as the criterion with the protection range of claim.

Claims

1. the method for path management in the communication system is characterized in that, comprising:

2. the method for path management is characterized in that in the communication system according to claim 1, and described path management request comprises: request is revised in path request to create and/or path.

3. the method for path management is characterized in that in the communication system according to claim 1, and described steps A comprises:

4. according to the method for path management in each described communication system of claim 1 to 3, it is characterized in that described step B comprises:

5. the method for path management is characterized in that in the communication system according to claim 4, and described step B1 comprises:

6. according to the method for path management in each described communication system of claim 1 to 3, it is characterized in that described method also comprises:

When a kind of entity receive that two or more entities initiate at the request of same session the time, then this entity and initiator's entity are all as both sides' entity execution in step A of participation path management and the process of step B.

7. according to the method for path management in each described communication system of claim 1 to 3, it is characterized in that described method also comprises:

8. according to the method for path management in each described communication system of claim 1 to 3, it is characterized in that described method also comprises: when carrying out corresponding path management and being operating as request to create, then need to remove original respective path information before this.

9. according to the method for path management in each described communication system of claim 1 to 3, it is characterized in that described communication system comprises: micro-wave access to global intercommunication WiMAX system.