Associated scanning method for WiMaX system and device therefor

A scanning method and CDMA code technology, applied in the field of communication, can solve problems such as association failure and inappropriate transmission power setting, and achieve the effects of increasing the probability of successful association, improving service quality, and optimizing network resources.

Inactive Publication Date: 2012-09-05
ZTE CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0026] The present invention aims to provide an association scanning method and device for a WiMAX system to solve the problem of association failure caused by inappropriate transmission power settings in the related art

Method used

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  • Associated scanning method for WiMaX system and device therefor
  • Associated scanning method for WiMaX system and device therefor
  • Associated scanning method for WiMaX system and device therefor

Examples

Experimental program
Comparison scheme
Effect test

example 1

[0072] Example 1: Level 1 association scan initiated by the mobile station

[0073] image 3 It is a signaling flowchart of the level 1 association scanning process initiated by the mobile station in the association scanning method according to the method embodiment of the present invention.

[0074] image 3 4 base stations are shown in , which are respectively serving base station, base station 1, base station 2 and base station 3, wherein, base station 1, base station 2 and base station 3 are adjacent base stations to be scanned, of course, the adjacent base stations in this embodiment The number is for illustrative purposes only, and the number of adjacent base stations is not limited to this and may be other numbers.

[0075] Such as image 3 As shown, the Level1 association scanning process initiated by the mobile station includes the following steps:

[0076] Step S302, the serving base station periodically broadcasts the channel information of base station 1, base ...

example 2

[0087] Example 2: level1 association scanning initiated by the base station

[0088] Figure 4 It is a signaling flowchart of the level 1 association scanning process initiated by the base station in the association scanning method according to the method embodiment of the present invention.

Embodiment 2

[0090] Step S404 of the second embodiment is that the serving base station actively coordinates and associates with the neighbor base station recommended for scanning. The serving base station actively sends the MOB_SCN-RSP message to the mobile station.

[0091] Steps S406-S420 are consistent with steps S308-S322 and will not be repeated here.

[0092] The above-mentioned example 1 and example 2 respectively provide the preferred processing flow of the message interaction of the level 1 associated scanning initiated by the base station and the mobile station according to the associated scanning method according to the embodiment of the present invention.

[0093] Device embodiment

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Abstract

The invention discloses an associated scanning method for a WiMaX system and a device therefore; wherein the method comprises the following steps: a mobile station transmits CDMA code to one adjacent base station in an adjacent base station aggregate, so as to initiate the association with the adjacent base station; within a presetting time bucket after the mobile station transmits CDMA code to the adjacent base station, a distance measurement response message from the adjacent base station can not be received, or under the condition that the distance measurement response message which is in a continued state is received, within the associated time of the adjacent base station, the mobile station retransmits the CDMA code to the adjacent base station; by adopting the invention, the probability of associated succeed of MS and the adjacent BS can be increased.

Description

technical field [0001] The present invention relates to the field of communication, in particular to an associated scanning method and device for a Worldwide Interoperability for Microwave Access (WiMAX for short) system. Background technique [0002] Since the WiMAX system needs to support user mobility, operations such as cell selection and handover are included in the IEEE802.16e standard. [0003] A mobile station (Mobile Station, MS for short) measures channel quality by receiving signals from adjacent base stations (BaseStation, BS for short), so as to search for the most suitable base station for handover. This process is called scanning. In the scanning interval, if a certain neighboring BS is considered suitable, the MS can perform ranging with the neighboring BS, and obtain and record the ranging parameters and useful service information. to reduce the switching delay. This second process is called association. [0004] Cell selection means that the MS scans an...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04W36/00H04W48/18
Inventor 张瑞霞
Owner ZTE CORP
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