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Cell reselection method in idle mode of broadband wireless access system

An access system and cell reselection technology, which is applied in access restriction, wireless communication, advanced technology, etc., can solve problems such as prolonging battery life, high power consumption, and long time for reselecting cells, and simplifies the MAC synchronization process , the effect of reducing power consumption and omitting the time to receive physical coded and modulated information

Active Publication Date: 2010-03-31
ZTE CORP
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Problems solved by technology

[0013] The technical problem to be solved by the present invention is to provide a cell reselection method in the idle mode of the broadband wireless access system, which can overcome the problems of long reselection time and high power consumption in the idle mode existing in the prior art, Reduce the time that the mobile terminal is in the wake-up state, thereby reducing the power consumption of the mobile terminal and prolonging the battery life

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  • Cell reselection method in idle mode of broadband wireless access system
  • Cell reselection method in idle mode of broadband wireless access system
  • Cell reselection method in idle mode of broadband wireless access system

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Embodiment Construction

[0031] The present invention will be further described below in conjunction with the accompanying drawings and specific embodiments, so that those skilled in the art can better understand the present invention and implement it, but the examples given are not intended to limit the present invention.

[0032] The cell reselection method in the idle mode of the broadband wireless access system of the present invention needs to be completed jointly by the serving base station and the mobile terminal on the network side. Among them, the processing flow of the serving base station on the network side is as follows: figure 1 shown, including:

[0033]101: The serving base station (Base Station, referred to as BS) or the cell periodically broadcasts the frequency point, modulation information and physical coding information of the neighboring cell base station; according to the 802.16e protocol, these information should be included in the neighboring cell broadcast message (MOB_NBR-AD...

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Abstract

The present invention discloses a cell reselection method in idle mode of broadband wireless access system. A base station broadcasts a neighboring cell broadcast massage periodically, the massage includes the frequency point, physical code and modulation information of the neighboring cell of the service cell; a mobile terminal receives and updates the neighboring cell broadcast massage, searchesa cell having the required channel quality according to the frequency point list of the neighboring cell carried in the neighboring cell broadcast massage when the cell needs to be reselected, receives and analyzes the DLMAP information of the cell and finishes the cell reselection. In the invention, the prior information of the neighboring cell is obtained via the neighboring cell broadcast massage, so as to guide the mobile terminal to search the uplink channels in a certain scope; the physical code and modulation information of the new cell is obtained according to the neighboring cell broadcast massage, omitting unnecessary time for receiving physical code and modulation information; the MAC synchronous process is simplified, thus saving the time of the mobile terminal in wake state,reducing the power consumption of the mobile terminal and extending the use time of battery.

Description

technical field [0001] The invention relates to the field of broadband wireless access, in particular to a cell reselection technology in idle mode of a WiMAX (Worldwide Interoperability for Microwave Access) system. Background technique [0002] When a mobile terminal accesses the system for the first time, it will select a cell as the serving cell. The mobile terminal monitors signals from the serving cell to determine events such as requiring the mobile terminal to leave idle mode. As the communication channel between the serving cell and the mobile terminal changes, the mobile terminal must periodically test the channel to determine if the cell selection is still suitable. For example, communication channels may change as a mobile terminal moves between cells within a system or between one or more adjacent systems. If the communication channel quality of the original serving cell no longer meets the requirements, a new serving cell will be selected. This process is cal...

Claims

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Application Information

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IPC IPC(8): H04W48/10H04W48/16
CPCY02D30/70
Inventor 历亮刘利平刘娟娟王立平陈继勋
Owner ZTE CORP
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