WO2011160391A1

WO2011160391A1 - Method and base station for performing neighboring cell message configuration based on worldwide interoperability for microwave access (wimax)

Info

Publication number: WO2011160391A1
Application number: PCT/CN2010/079081
Authority: WO
Inventors: 张家强
Original assignee: 中兴通讯股份有限公司
Priority date: 2010-06-22
Filing date: 2010-11-24
Publication date: 2011-12-29
Also published as: CN102300185B; CN102300185A

Abstract

A method and a base station for performing neighboring cell message configuration based on Worldwide Interoperability for Microwave Access (MiMAX) are provided in the present invention. The method includes the following steps: a base station (BS) on the service side obtains, through an access gateway, the BS configuration information of at least one neighboring cell BS from said at least one neighboring cell BS (S101); and the BS on the service side stores the BS configuration information of said neighboring cell BSs (S102). The technical solution of the present invention enables the BS on the service side to automatically configure the neighboring cell BS information, increases the configuration efficiency obviously compared with the case in the manual configuration mode, and further avoids the communication fault resulted from input mistakes. By applying the present invention, the neighboring cell handover mode of a Mobile Station (MS) is judged according to the BS configuration information of the neighboring cell BSs, thus improving the success rate of neighboring cell handover and insuring the quality of wireless communication.

Description

Method and base station for implementing neighborhood message configuration based on Worldwide Interoperability for Microwave Access (WIMAX)

Technical field

The present invention relates to mobile communication technologies, and in particular, to a method and a base station for implementing neighbor message configuration based on Worldwide Interoperability for Microwave Access (WIMAX).

Background technique

In a WIMAX system, when a base station (Base Station: BS) controls a wireless terminal (Mobile Station: MS) to perform a neighbor handover, it is usually necessary to consider various reference factors, such as a physical layer mode of a neighbor BS, and a subchannel usage status. Etc., to ensure the communication quality of the MS in the handover neighboring area, and at the same time achieve load balancing among multiple BSs.

However, at present, each BS in the WIMAX system manually configures the neighboring area information, which is not only inefficient, but also may have a lower success rate of neighboring handover due to operational errors, operational delays, and the like.

Summary of the invention

The present invention provides a method and a base station for implementing neighbor message configuration based on WIMAX, which can significantly improve configuration efficiency.

To solve the above technical problem, the present invention provides a method for implementing neighbor message configuration based on WIMAX, including the following steps:

The serving side BS acquires base station configuration information of the neighboring cell BS from the at least one neighboring cell BS through the access gateway;

The serving side BS saves the base station configuration information of the neighbor BS.

After the step of storing the base station configuration information of the neighbor BS in the serving side BS, the method may further include the following steps:

Triggering a neighboring cell handover of the wireless terminal; The serving side BS determines the neighboring cell switching mode of the wireless terminal according to the stored base station configuration information of the neighboring cell BS.

The serving side BS may acquire the base station configuration information of the neighboring area BS from the neighboring area BS in the following manner: when the system is initialized, the serving side BS sends a neighboring area information request to the neighboring area BS, and receives the neighboring area BS to return according to the neighboring area information request. Base station configuration information;

Alternatively, the service-side BS periodically sends a neighboring cell information request to the neighboring cell BS during normal operation, and receives the base station configuration information that the neighboring cell BS returns according to the neighboring cell information request;

Alternatively, when the base station configuration information of the neighboring cell BS changes, the base station configuration information of the changed neighboring cell BS is actively sent to the serving side BS.

When the serving side BS acquires the base station configuration information of the neighbor BS, the base station configuration information may be included in the neighbor information report sent by the neighbor BS to the serving side BS.

The base station configuration information may include at least one of a synchronization code index, a handover preference, a physical layer mode, scheduling service support, handover type support, and uplink subchannel mapping.

After the serving side BS saves the base station configuration information of the neighboring area BS, the base station configuration information of the neighboring area BS may also be sent to the wireless terminal by using a broadcast message.

Preferably, the step of triggering the neighboring cell handover of the wireless terminal comprises: the service side BS receiving the handover request of the wireless terminal, or the service side BS receiving the response message of the wireless terminal after issuing the handover request to the wireless terminal.

The handover request or response message of the wireless terminal may also carry the signal strength information of the neighbor BS. The service side BS may also refer to the signal strength information of the neighbor BS to determine the neighbor handover mode of the wireless terminal.

The present invention also protects a service side BS that implements neighbor message configuration based on WIMAX, and includes an information acquisition module and a storage module.

The information acquisition module is configured to: obtain, by the access gateway, the base station configuration information of the neighbor BS from the at least one neighbor BS, and send the base station configuration information of the neighbor BS to the storage module; the storage module is configured to save Base station configuration information of the neighbor BS.

The service side BS may further include a handover triggering module and a handover decision module;

The handover triggering module can be configured to trigger a neighboring cell handover of the wireless terminal; The handover decision module may be configured to determine a handover mode of the wireless terminal according to the base station configuration information of the neighbor BS that is stored by the storage module when the handover trigger module triggers the neighboring cell handover of the wireless terminal.

The service side BS may further include an information providing module, and the information providing module may be configured to: send the base station configuration information of the service side BS to the neighboring area BS according to the request of the neighboring area BS; or when the base station configuration information of the service side BS When the change occurs, the base station configuration information of the changed service side BS is actively sent to the neighbor BS.

The invention has the following advantages: The technical solution of the WIMAX implementation of the neighboring cell message configuration realizes the automatic configuration of the information of the neighboring cell base station by the service side base station, and the configuration efficiency is significantly improved compared with the manual configuration mode, and the configuration efficiency is avoided. A communication failure caused by an input error.

The service side BS of the present invention determines the neighboring area switching mode of the MS by using the base station configuration information of the neighboring area BS, which can significantly improve the success rate of the neighboring area handover and ensure the quality of the wireless communication.

BRIEF abstract

FIG. 1 is a flowchart of a method for implementing neighboring cell message configuration based on WIMAX according to an embodiment of the present invention; FIG. 2 is a schematic diagram of information interaction of a neighbor cell handover performed by another embodiment of the present invention; FIG. A schematic diagram of a system for implementing neighbor message configuration based on WIMAX.

Preferred embodiment of the invention

The present invention will be further described in detail below with reference to the accompanying drawings.

The present invention discloses a technical solution for implementing neighbor message configuration based on WIMAX. The service-side BS can automatically obtain the base station configuration information of the neighbor BS from the neighbor BS, and the service is performed when the MS managed by the service-side BS needs to perform the neighbor handover. The side BS uses the base station configuration information of the neighbor BS as a reference factor, thereby determining the neighbor handover mode of the MS.

Referring to FIG. 1 , a method for implementing neighbor message configuration based on WIMAX includes the following steps:

Step S101: The serving side BS acquires the base of the neighbor BS from the at least one neighbor BS through the access gateway. Station configuration information, base station configuration information of each BS includes Preamble index of the BS, HO Process Optimzation, PhyModelD Scheduling Service Supported, and Type Support ( One or more of information such as a handover type support, a UL Allocated subchannels bitmap, etc., for reflecting whether an MS is allowed to switch to the BS for wireless communication, or for the base station to perform other operations.

The specific acquisition manner includes multiple types. For example, when the service-side BS initializes the system, it sends a neighbor information request to the neighbor BS, and receives the base station configuration information returned by the neighbor BS according to the neighbor information request.

Or, when the serving side BS is in normal operation, periodically sends a neighboring cell information request to the neighboring cell BS, and receives the base station configuration information that the neighboring cell BS returns according to the neighboring cell information request.

In another embodiment, when the base station configuration information of the neighbor BS is changed, the base station configuration information of the changed neighbor BS is actively sent to the service side BS.

For a WIMAX system composed of multiple BSs, the MS may perform a neighboring cell handover between the BSs. Therefore, the serving side BSs serve as neighboring cells BSs of other cells, and may also provide service side BSs to other neighboring cell BSs by the manner described above. Base station configuration information.

At present, the radio resource management module of the BS is configured to be responsible for interaction of information such as configuration information and resource usage rate between the neighboring BSs, and the radio resource management module of each BS may send the uplink and downlink channel description and resource utilization to the neighboring BS. The neighboring area report message of the message helps to implement load balancing between the BSs. Therefore, in a preferred implementation manner, the base station configuration information may be included in the neighboring area information sent by the neighboring area BS to the serving side BS. That is, the content of the existing neighboring area information 4 is increased, and the modification of the existing WIMAX system is small in this embodiment.

The access gateway implements the transmission of the base station configuration information through the information control unit. For the BS that cannot directly interact, the access gateway may also forward the information through the next-level access gateway.

Step S102: The serving side BS saves the base station configuration information of the neighbor BS. Then, the serving side BS may also send the base station configuration information of the neighboring area BS to all the MSs managed by the service side BS through the MOB-NBR-ADV broadcast message, so that the MS determines whether to propose the neighboring area handover by referring to the base station configuration information of the neighboring area BSs. request. Step S103: trigger the neighboring cell handover of the MS.

This step may also be implemented in multiple manners. For example, when the MS determines that the signal strength of the current serving side BS is weak, the MS may actively initiate a handover request to the serving side BS; or when the serving side BS issues a handover to the MS according to the load status, if necessary. Request, and receive a response message from the MS.

Preferably, the MS may also carry signal strength information of one or more neighbor BSs obtained by means of signal scanning when the handover request or the response message is presented, and the service side BS receives and stores the signal strength information of the neighbor BS.

Step S104: The serving side BS determines the neighboring area switching mode of the MS according to the stored base station configuration information of the neighboring area BS. The neighboring area switching mode includes whether to recommend the MS to perform handover, or select the target neighboring area BS to be switched.

The decision policy can be flexibly set. For example, the serving side BS selects the neighbor BS as the MS to switch the BS by comparing the plurality of neighbor BSPhyModelDs. Preferably, the serving side BS may also refer to the signal strength information of each neighboring cell BS provided by the MS when performing the decision, thereby obtaining a reasonable decision result, for example, preferentially selecting the neighboring cell BS with a larger signal strength.

Step S105: The service side BS sends a decision result including the part switching mode to the MS, so as to perform a corresponding switching operation according to the decision result.

As shown in FIG. 2, for example, when the base station A is the serving side BS, the base station B, and the base station C as the neighboring cell BS, the information exchange process of the MS performing the neighboring cell handover includes the following steps:

Step S201: When the system is initialized, the base station A sends a neighboring area information request to the neighboring base station through the access gateway.

Step S202: The access gateway forwards the neighbor information request to the base station B.

Step S203: The base station B sends the base station configuration information of the BS to the base station A through the access gateway, and the PhyModelD only supports the 5M bandwidth mode.

Step S204: The access gateway forwards the base station configuration information of the base station B to the base station A, and the base station A saves the base station configuration information.

Step S205: The access gateway forwards the neighbor information request to the base station C.

Step S206: The base station C sends the base station configuration information of the BS to the base station A through the access gateway, and the PhyModelD supports the 5M bandwidth mode and the 10M bandwidth mode. Step S207: The access gateway forwards the base station configuration information of the base station C to the base station A, and the base station A saves the base station configuration information.

The interaction process in which the base station A obtains base station configuration information from multiple neighbor BSs such as the base station B and the base station C can be simultaneously performed.

Step S208: The MS initiates a neighboring cell handover request to the base station A, and carries the signal strength information of the base station B and the base station C.

Step S209: The base station A determines the neighboring cell handover mode of the MS according to the base station configuration information of the base station B and the base station C, and the signal strength information of the base station B is slightly better than the base station C in the embodiment, but the base station B The 10M bandwidth mode cannot be supported, so the base station C is selected as the target handover BS of the MS, and the base station A sends the decision result to the MS through the air interface message.

Step S210: The MS initiates a handover request to the base station C according to the received decision result.

If the MS proposes a handover request directly to the base station B, the access failure may be caused by the base station B failing to support the 10M bandwidth mode. The present embodiment uses the base station configuration information of the neighbor BS to determine that the handover is suitable for the MS. The neighboring mode is switched, thus effectively improving the success rate of access.

As shown in FIG. 3, a system for implementing neighbor message configuration based on WIMAX includes a service side BS 10, an access gateway 20, and at least one neighbor BS 30. The structure of each neighbor BS BS can be compared with the service side BS 10. It's exactly the same.

The service side BS 10 includes an information acquisition module 11, a storage module 12, a handover trigger module 14, a handover decision module 13, and an information providing module 15.

The information acquisition module 11 is configured to acquire the base station configuration information of the neighbor BS BS 30 from the at least one neighbor BS 30 through the information control unit 21 in the access gateway 20, and send the acquired base station configuration information of the neighbor BS 30 to the storage. Module 12.

For example, when the system-side BS 10 initializes the system, the information acquiring module 11 sends a neighboring cell information request to the neighboring cell BS 30, and receives the base station configuration information that the neighboring cell BS 30 returns according to the neighboring cell information request; During normal operation, the information obtaining module 11 periodically sends a neighboring cell information request to the neighboring cell BS 30, and receives the base station configuration information that the neighboring cell BS 30 returns according to the neighboring cell information request. In another implementation manner, The information acquisition module 11 can also receive the neighboring area When the base station configuration information changes, the BS 30 actively transmits the base station configuration information of the changed neighboring cell BS 30 to the serving side BS 10.

The storage module 12 is configured to store base station configuration information of the neighbor BS BS 30 acquired by the information acquisition module 11. Further, the base station configuration information of the neighbor BS BS 30 can also be sent to all MSs managed by the service side BS 10 through the MOB_NBR-ADV broadcast message.

The handover triggering module 14 is configured to trigger the neighboring cell handover of the MS, and the triggering manner also includes multiple, for example, the MS actively proposes a handover request, and the handover triggering module 14 receives the handover request; or the handover triggering module 14 issues a handover request to the MS when necessary. And receiving the response message of the MS. Preferably, the handover request or response message of the MS may further include signal strength information carrying each neighbor BS BS 30.

The handover decision module 13 is configured to determine the handover mode of the MS according to the base station configuration information of the neighbor BS BS stored by the storage module 12 when the handover trigger module 14 triggers the neighbor cell handover of the MS, and send the determination result to the MS. Preferably, the handover decision module 13 can also determine the neighbor handover mode of the MS by referring to the signal strength information of the neighbor BS BS 30.

The information providing module 15 is configured to: send the base station configuration information of the serving side BS 10 to the neighboring area BS 30 according to the request of the neighboring area BS 30; or actively to the neighboring area BS 30 when the base station configuration information of the serving side BS 10 changes. The base station configuration information of the changed service side BS 10 is transmitted. Preferably, the information providing module 15 uses the original radio resource management module. When the radio resource management module sends the neighboring cell information report to the neighboring cell BS 30, the base station configuration information of the serving side BS 10 is included in the neighboring cell message. The report was sent together.

The invention realizes the automatic configuration of the information of the neighboring cell base station by the service side BS based on the WIMAX implementation of the neighboring cell message configuration, which not only improves the configuration efficiency, but also avoids the communication failure caused by the input error. The service side BS of the present invention determines the neighboring area switching mode of the MS by using the base station configuration information of the neighboring area BS, which can significantly improve the success rate of the neighboring area handover and ensure the quality of the wireless communication.

The above is a further detailed description of the present invention in connection with the specific embodiments, and the specific implementation of the invention is not limited to the description. It will be apparent to those skilled in the art that the present invention may be made without departing from the spirit and scope of the invention. Industrial applicability

Compared with the prior art, the present invention realizes the automatic configuration of the base station information of the neighboring base station by the service side base station, and the configuration efficiency is significantly improved compared with the manual configuration mode, and the communication failure caused by the input error is avoided. The invention determines the neighboring area switching mode of the MS by using the base station configuration information of the neighboring base station, which can significantly improve the success rate of the neighboring area handover and ensure the quality of the wireless communication.

Claims

Claim

A method for implementing neighboring cell message configuration based on the global microwave interconnection access WIMAX, comprising: the service side base station acquiring, by using an access gateway, base station configuration information of the neighboring cell base station from at least one neighboring cell base station;

The serving side base station stores base station configuration information of the neighboring base station.

The method of claim 1, after the step of storing the base station configuration information of the neighboring base station by the serving side base station, further comprising:

Triggering a neighboring cell handover of the wireless terminal;

The serving side base station determines the neighboring mode of the wireless terminal according to the base station configuration information of the neighboring base station.

The method according to claim 1, wherein the serving-side base station acquires base station configuration information of the neighboring base station by:

When the system is initialized, the serving-side base station sends a neighboring cell information request to the neighboring cell base station, and receives the base station configuration information that the neighboring cell base station returns according to the neighboring cell information request;

Alternatively, the service-side base station periodically sends a neighboring cell information request to the neighboring cell base station during normal operation, and receives the base station configuration information that the neighboring cell base station returns according to the neighboring cell information request;

Alternatively, the neighboring base station actively sends the changed base station configuration information to the serving side base station when the base station configuration information of the base station changes.

The method according to claim 1, wherein, in the step of the base station configuration information of the neighboring base station, the base station configuration information is included in the neighboring base station and sent to the serving side base station The neighboring area information report is sent to the service side base station.

The method according to any one of claims 1 to 4, wherein the base station configuration information includes a synchronization code index, a handover preference, a physical layer mode, a scheduling service support, a handover type support, and an uplink subchannel mapping. At least one of them.

The method according to claim 1 or 3 or 4, further comprising: after the base station configuration information of the neighboring base station is saved, the base station configuration information of the neighboring base station is sent to the wireless terminal by using a broadcast message. .

The method of claim 2, wherein the step of triggering the neighboring cell handover of the wireless terminal comprises: the serving side base station receiving the handover request of the wireless terminal, or the serving side base station receiving the handover request after the wireless terminal sends the handover request The response message of the wireless terminal.

8. The method according to claim 7, wherein the handover request or the response message of the wireless terminal carries signal strength information of the neighboring base station;

In the step of determining the neighboring cell switching mode of the wireless terminal, the serving side base station further determines the neighboring cell switching mode of the wireless terminal by referring to the signal strength information of the neighboring base station.

9. A service-side base station based on global microwave interconnection access WIMAX for implementing neighbor message configuration, including an information acquisition module and a storage module;

The information acquiring module is configured to acquire base station configuration information of the neighboring base station from at least one neighboring base station by using an access gateway, and send base station configuration information of the neighboring base station to the storage module;

The storage module is configured to save base station configuration information of the neighboring base station.

10. The service side base station according to claim 9, further comprising a handover triggering module and a handover decision module;

The switching trigger module is configured to trigger a neighboring cell handover of the wireless terminal;

The handover decision module is configured to determine, according to the base station configuration information of the neighboring base station stored by the storage module, the handover mode of the wireless terminal, when the handover triggering module triggers the neighboring cell handover of the wireless terminal.

The service-side base station according to claim 9, further comprising an information providing module, wherein the information providing module is configured to: send the base station configuration information of the serving-side base station to the neighboring base station according to the request of the neighboring base station; Or, when the base station configuration information of the serving base station changes, the base station configuration information of the changed serving base station is actively sent to the neighboring base station.