CN101026514B - Adjacent base station list updating method and system for WiMAX system - Google Patents
Adjacent base station list updating method and system for WiMAX system Download PDFInfo
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- CN101026514B CN101026514B CN2006100091951A CN200610009195A CN101026514B CN 101026514 B CN101026514 B CN 101026514B CN 2006100091951 A CN2006100091951 A CN 2006100091951A CN 200610009195 A CN200610009195 A CN 200610009195A CN 101026514 B CN101026514 B CN 101026514B
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Abstract
Being related to method and system for updating list of adjacent base stations in WiMAX system, the invention is in use for solving issues existed in current technique that it is unable to carry out updating operation in time on initiative when RRA finds that local adjacent BS list (ABSL) is lost or destroyed, or current adjacent BS list is considered not newest. The method includes steps: wireless resource proxy (WRP) requests newest ABSL to wireless resource controller (WRC); WRC sends newest ABSL to WRP; receiving the ABSL, WRP does local updating. The system includes WRP setup on BS, and wireless resource manager connected to WRP. WRP includes modules: module for creating updating request; first information send receive module, and information parsing module. Wireless resource manager includes second information send receive module, and module for generating response information.
Description
Technical field
The present invention relates to the WiMAX communication technology, adjacent bast station list update method and system in the particularly a kind of WiMAX system.
Background technology
IEEE 802.16 standard definitions BWA (Broadband Wireless Access, broadband wireless access) wireless metropolitan area network standard, this standard pin has defined different physical-layer techniques to different frequency range, range of application is mainly towards dwelling house, small office/family office, teleworker and SME (Small Enterprise, the user of small enterprise) market.
MAC (the Media Access Control of definition among the IEEE 802.16, media access control layer) supports very disadvantageous user environment, can deal with the applied environment that on each channel, has hundreds and thousands of users, support different traffic carrying capacitys such as continous way and burst type.It has ATM (Asynchronous TransferMode, asynchronous transfer mode) convergence sub-layer and grouping convergence sub-layer, after being handled through convergence sub-layer, a plurality of high level datas unit is packaged into a MAC PDU (Media Access Control, media access control layer; Protocol Data Unit, protocol Data Unit) send, can realize protocol transparency to ATM, IP (InternetProtocol, Internet Protocol) and Ethernet service.
WiMAX (Worldwide Interoperability Microwave Access, micro-wave access to global intercommunication) is world microwave access mutual operability industry organization, is intended to promote of the promotion and application of the serial air protocol of IEEE 802.16 (IEEE 802.16, IEEE802.16d, IEEE 802.16e) in the whole world.The WiMAX of indication all refers to satisfy the network entity of IEEE 802.16 air protocol herein.
Existing WiMAX system comprises ASN (Access Service Network, Access Network), ASN is defined as the network function set that the WiMAX terminal provides the wireless access service, ASN has comprised BS (BaseStation, the base station) and ASN GW (GateWay, gateway) network element, wherein BS is the base station equipment of WIMAX network, mainly finish the processing of air interface physical layer and MAC (Media Access Control, media access control layer) layer.
For wireless network, the Radio Resource of eating dishes without rice or wine is the system resource of most critical, must manage efficiently, to improve power system capacity and performance.In the WIMAX network, RRM (Radio ResourceManagement, RRM) mainly comprises two functional entity RRA (RadioResource Agent in the model, radio resource agent) and RRC (Radio Resource Controller, radio resource controller), existing WiMAX system definition two kinds of RRM models, first kind of model structure as shown in Figure 1, RRC is positioned at outside the BS, RRC can be set to independently network entity, also can be arranged among the ASNGW, connect by Interface R4 between the RRC, RRC connects by the R6 interface between RRA.Second kind of model structure as shown in Figure 2, RRC and RRA are arranged in BS, connect by the R8 interface between the RRC, RRC connects by internal interface between RRA.Wherein:
RRA is arranged in each BS, mainly measures and collect the relevant information of Radio Resource, and measurement result is reported RRC, assists to finish the management and the control of BS local wireless sources simultaneously;
The wireless resource information that RRC mainly collects according to RRA is finished wireless resource allocation and control, carries out lateral communications and control with other RRC simultaneously.
In the wireless resource information, the neighbor bss tabulation is mainly used in switching controls, in Control on Communication, have very important significance, in the existing RRM standard, only defined RRM-Neighbor-BS-radio-resourcestatus-update primitive, be used for RRC when the neighbor bss tabulation takes place to upgrade, initiatively send to RRA, require RRA to upgrade local neighbor bss list information, but when RRA finds that the tabulation of local neighbor bss is lost or is destroyed, perhaps think when the tabulation of current neighbor bss is not up-to-date tabulation, existing standard does not provide the method that upgrades in time at this situation, may cause the failure of switching controls.
Summary of the invention
The invention provides adjacent bast station list update method and device in a kind of WiMAX system, to solve in the prior art, RRA finds that the tabulation of local neighbor bss is lost or when destroyed or think when current neighbor bss tabulation is not up-to-date tabulation the problem that can't in time initiatively upgrade.
Adjacent bast station list update method in a kind of WiMAX system comprises the steps:
A, radio resource agent are to the up-to-date adjacent bast station list of radio resource controller request;
B, radio resource controller send up-to-date adjacent bast station list to radio resource agent;
C, radio resource agent receive described adjacent bast station list and are updated to this locality.
In the described method, radio resource agent triggers steps A according to one of following situation: the adjacent bast station list that break down in the base station and the part veneer that restarts back, base station is restarted or preserve the back that resets, base station destroyed or lose the back, apart from the time interval of upgrading last time surpass when setting duration, triggering cycle of setting is when reaching.
Also comprise simultaneously before the described step C: after the adjacent bast station list that radio resource controller is preserved in this locality each time is updated, the adjacent bast station list after radio resource agent sends renewal.
Adjacent bast station list update system in a kind of WiMAX system comprises radio resource agent that is arranged on the base station and the radio resource manager that is connected described radio resource agent; Wherein:
Described radio resource agent comprises:
The update request generation module is used to generate adjacent bast station list update request and output;
First information transceiver module, connect described update request generation module, be used for described adjacent bast station list update request is sent to radio resource manager, and reception carries up-to-date adjacent bast station list from the response message of radio resource manager in this response message;
The information analysis module connects described first information transceiver module, is used for parsing adjacent bast station list and being updated to this locality from described response message.
Described radio resource manager comprises:
Second signal dispatcher module is used for the request of receiving neighbor bs list update and exports control signal;
The response message generation module connects described second signal dispatcher module, is used for generating the response message of carrying up-to-date adjacent bast station list according to described control signal, and sends to radio resource agent by second signal dispatcher module.
Further, described radio resource agent also comprises:
First trigger module connects described update request generation module, is used for the triggering signal of receiving neighbor bs list update request and exports corresponding enabling signal to the update request generation module; First memory module connects described information analysis module, is used to store described adjacent bast station list;
Described radio resource manager also comprises:
Second memory module connects described second signal dispatcher module, is used to store described adjacent bast station list, and sends update signal when adjacent bast station list is updated;
Second trigger module is connected between described second memory module and the response message generation module, is used for sending the response message of carrying up-to-date adjacent bast station list according to described update signal triggered response information generating module.
In the described system, radio resource manager is arranged on the Access Network gateway A SNGW in the WiMAX system, and radio resource agent is connected by Interface R4 with radio resource manager.
Beneficial effect of the present invention is as follows:
The present invention is by increasing the primitive of RRA to RRC: RRM-Neighbor-BS-radio-resource-request, the RRA that is used for BS initiatively upgrades to the up-to-date neighbor bss tabulation of RRC request, make RRA find that the tabulation of local neighbor bss is lost or when destroyed, perhaps think when the tabulation of current neighbor bss is not up-to-date tabulation, can in time upgrade, improve the success rate of switching controls.
Description of drawings
Fig. 1 is existing RRM model 1 structural representation;
Fig. 2 is existing RRM model 2 structural representations;
Fig. 3 is the realization flow figure of neighbor bss list updating method of the present invention;
Fig. 4 is the system configuration schematic diagram of neighbor bss list updating method of the present invention.
Embodiment
Among the existing standard RRM, only defined RRM-Neighbor-BS-radio-resource-status-update primitive, be used for RRC when the neighbor bss tabulation takes place to upgrade, initiatively send to RRA, require RRA to upgrade local neighbor bss list information, but when RRA finds that the tabulation of local neighbor bss is lost or is destroyed, perhaps think when the tabulation of current neighbor bss is not up-to-date tabulation, existing standard does not provide the method that upgrades in time at this situation, the present invention increases the primitive of RRA to RRC: RRM-Neighbor-BS-radio-resource-request for this reason, the RRA that is used for BS initiatively upgrades the neighbor bss tabulation to the RRC request, below with specific embodiment and be described with reference to the accompanying drawings.
Embodiment one
Neighbor bss list updating method realization flow of the present invention comprises the steps: as shown in Figure 3
S101, RRA judge whether trigger condition takes place;
After BS breaks down and restarts, after the part veneer of BS is restarted or is resetted, the memory cell of the neighbor bss tabulation that BS preserves destroyed or lose after, BS is kept at local neighbor bss tabulation might be destroyed or lose, and when the time interval of upgrading apart from last time surpasses the setting duration, BS may not receive the RRM-Neighbor-BS-radio-resource-status-update primitive that RRC initiatively sends, causing the local neighbor bss of preserving to be tabulated may be expired, at this moment, for guaranteeing to switch the success that waits control, therefore the BS tabulation that BS need upgrade in time local triggers RRA and sends RRM-Spare-capacity-request primitive;
S102, RRA send RRM-Neighbor-BS-radio-resource-request primitive to RRC, ask up-to-date neighbor bss tabulation;
S103, RRC send RRM-Neighbor-BS-radio-resource-status-update primitive to RRA, comprising up-to-date neighbor bss tabulation;
RRM-Neighbor-BS-radio-resource-status-update primitive triggers according to RRM-Spare-capacity-request primitive, comprising up-to-date neighbor bss tabulation;
The neighbor bss tabulation of the last preservation of RRC is generally upgraded by configuration mode, can be manual configuration, also can be to dispose automatically by some adjacent area testing tool or method.
Simultaneously, after the neighbor bss tabulation that RRC preserves in this locality each time was updated, after each the renewal, RRC can initiatively send RRM-Neighbor-BS-radio-resource-status-update primitive to RRA, comprising up-to-date neighbor bss tabulation;
S104, RRA receive the neighbor bss tabulation and are updated to this locality.
After RRA receives RRM-Neighbor-BS-radio-resource-status-update primitive at every turn, therefrom parse the neighbor bss tabulation and be updated to this locality, realized that RRA initiatively upgrades the purpose of neighbor bss tabulation.
According to different RRM models, when RRA is arranged among the BS, when RRC is arranged among the ASN-GW or when being arranged in the physical entity separately, the reciprocal process of relevant primitive occurs in BS and ASN-GW/ independently between the physical entity, transmits by the R6 interface; When RRC and RRA are arranged among the same BS, the reciprocal process of relevant primitive occurs in BS inside, by the internal interface transmission; When RRC and RRA were separately positioned between the neighbor bss, the reciprocal process of relevant primitive occurred between the BS, transmits by the R8 interface.
Embodiment two
The system configuration schematic diagram of realizing neighbor bss list updating method of the present invention comprises RRA that is arranged on the BS and the RRC that is connected this RRA as shown in Figure 4, wherein:
Described RRA comprises:
First trigger module connects described update request generation module, is used for the triggering signal of receiving neighbor bs list update request and exports corresponding enabling signal to the update request generation module;
Trigger module is exported corresponding enabling signal according to the incident of setting, these incidents comprise: after BS breaks down and restarts, after the part veneer of BS is restarted or is resetted, the memory cell of the neighbor bss tabulation that BS preserves destroyed or lose after, BS is kept at after the local neighbor bss tabulation might be destroyed or lose, and when the time interval of upgrading apart from last time surpasses the setting duration, BS may not receive the RRM-Neighbor-BS-radio-resource-status-update reason that RRC initiatively sends, at this moment local neighbor bss tabulation of preserving may be expired, at this moment, for guaranteeing to switch the success that waits control, therefore the BS tabulation that BS need upgrade in time local triggers RRA and sends RRM-Neighbor-BS-radio-resource-request primitive;
The update request generation module is used to generate adjacent bast station list update request and output, promptly generates RRM-Neighbor-BS-radio-resource-request primitive;
First information transceiver module, connect described update request generation module, be used for described adjacent bast station list update request is sent to RRC, and reception is from the response message of RRC, carry up-to-date adjacent bast station list in this response message, promptly send RRM-Neighbor-BS-radio-resource-request primitive or receive RRM-Neighbor-BS-radio-resource-status-update primitive;
The information analysis module, connect described first information transceiver module, be used for parsing adjacent bast station list and being updated to this locality, promptly from RRM-Neighbor-BS-radio-resource-status-update primitive, parse adjacent bast station list from described response message;
First memory module connects described information analysis module, is used to store described adjacent bast station list.
Described RRC comprises:
Second signal dispatcher module, be used for the request of receiving neighbor bs list update and export control signal, send RRM-Neighbor-BS-radio-resource-status-update primitive or receive RRM-Neighbor-BS-radio-resource-request primitive;
The response message generation module, connect described second signal dispatcher module, be used for generating the response message of carrying up-to-date adjacent bast station list according to described control signal, and send to RRA by second signal dispatcher module, promptly generate RRM-Neighbor-BS-radio-resource-status-update primitive and send;
Second memory module connects described second signal dispatcher module, is used for the described adjacent bast station list of storage on RRC, and sends update signal when adjacent bast station list is updated;
Second trigger module, be connected between described second memory module and the response message generation module, be used for sending the response message of carrying up-to-date adjacent bast station list according to described update signal triggered response information generating module, after promptly adjacent bast station list was updated each time, RRC must be carried at and send to RRA in the RRM-Neighbor-BS-radio-resource-status-update primitive and upgrade in time.
In the foregoing description, RRA is arranged on the BS, and RRC is arranged among certain ASN-GW or is arranged on separately in the physical entity, connects by Interface R4 between RRA and the RRC.
Obviously, those skilled in the art can carry out various changes and modification to the present invention and not break away from the spirit and scope of the present invention.Like this, if of the present invention these are revised and modification belongs within the scope of claim of the present invention and equivalent technologies thereof, then the present invention also is intended to comprise these changes and modification interior.
Claims (6)
1. the adjacent bast station list update method in the WiMAX system is characterized in that, comprises the steps:
A, radio resource agent are to the up-to-date adjacent bast station list of radio resource controller request;
B, radio resource controller send up-to-date adjacent bast station list to radio resource agent;
C, radio resource agent receive described adjacent bast station list and are updated to this locality.
2. the method for claim 1, it is characterized in that radio resource agent triggers steps A according to one of following situation: the adjacent bast station list that break down in the base station and the part veneer that restarts back, base station is restarted or preserve the back that resets, base station destroyed or lose the back, apart from the time interval of upgrading last time surpass when setting duration, triggering cycle of setting is when reaching.
3. the method for claim 1 is characterized in that, also comprises simultaneously before the described step C: after the adjacent bast station list that radio resource controller is preserved in this locality each time is updated, and the adjacent bast station list after radio resource agent sends renewal.
4. the adjacent bast station list update system in the WiMAX system comprises radio resource agent that is arranged on the base station and the radio resource manager that is connected described radio resource agent; It is characterized in that:
Described radio resource agent comprises:
The update request generation module is used to generate adjacent bast station list update request and output;
First information transceiver module, connect described update request generation module, be used for described adjacent bast station list update request is sent to radio resource manager, and reception carries up-to-date adjacent bast station list from the response message of radio resource manager in this response message;
The information analysis module connects described first information transceiver module, is used for parsing adjacent bast station list and being updated to this locality from described response message;
Described radio resource manager comprises:
Second signal dispatcher module is used for the request of receiving neighbor bs list update and exports control signal;
The response message generation module connects described second signal dispatcher module, is used for generating the response message of carrying up-to-date adjacent bast station list according to described control signal, and sends to radio resource agent by second signal dispatcher module.
5. system as claimed in claim 4 is characterized in that:
Described radio resource agent also comprises:
First trigger module connects described update request generation module, is used for the triggering signal of receiving neighbor bs list update request and exports corresponding enabling signal to the update request generation module;
First memory module connects described information analysis module, is used to store described adjacent bast station list;
Described radio resource manager also comprises:
Second memory module connects described second signal dispatcher module, is used to store described adjacent bast station list, and sends update signal when adjacent bast station list is updated;
Second trigger module is connected between described second memory module and the response message generation module, is used for sending the response message of carrying up-to-date adjacent bast station list according to described update signal triggered response information generating module.
6. system as claimed in claim 4 is characterized in that, radio resource manager is arranged on the Access Network gateway A SN GW in the WiMAX system, and radio resource agent is connected by Interface R4 with radio resource manager.
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN1435980A (en) * | 2002-01-30 | 2003-08-13 | 华为技术有限公司 | Method for transmission of protocol data unit information |
| CN1437834A (en) * | 1999-12-29 | 2003-08-20 | 高通股份有限公司 | Improved soft handoff algorithm and wireless communication system for third generation CDMA systems |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1437834A (en) * | 1999-12-29 | 2003-08-20 | 高通股份有限公司 | Improved soft handoff algorithm and wireless communication system for third generation CDMA systems |
| CN1435980A (en) * | 2002-01-30 | 2003-08-13 | 华为技术有限公司 | Method for transmission of protocol data unit information |
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