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Cell search method in GMR system

A cell search and cell technology, which is applied in the field of cell search, can solve the problem of long time consumption of GMR terminal blind search frequency points, etc., and achieve the effect of solving long time consumption and improving efficiency

Active Publication Date: 2017-02-01
CHONGQING UNIV OF POSTS & TELECOMM
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Problems solved by technology

[0013] In view of this, the purpose of the present invention is to provide a cell search method in the GMR system, the method mainly relates to how to improve the efficiency of the cell search by the GMR mobile terminal, and solve the problem that the GMR terminal consumes a long time for blind search of frequency points

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  • Cell search method in GMR system

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Embodiment Construction

[0038] The preferred embodiments of the present invention will be described in detail below with reference to the accompanying drawings.

[0039] The present invention aims at the problem that the GMR terminal takes a long time to blindly search frequency points. By making full use of the system message content broadcast in the GMR cell, the terminal user identity module (referred to as: SIM card) and the terminal non-volatile information storage unit (referred to as NV )To be done.

[0040]The BCCH frequency points in the GMR cell broadcast system message include: First: the frequency point of the BCCH of the neighboring cell (abbreviation: BCCH_NEIGHBOUR_LIST), which is broadcast in the system message Segment 2Abis, Segment 2B, and Segment 2Bbis, and the frequency point list indicates the cell BCCH frequencies of nearby neighboring cells. Second: the main concurrent BCCH list (abbreviation: Concurrent BCCH List), which is broadcast in Segment 3B, Segment 3Bbis, Segment 3E, ...

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Abstract

The invention relates to a cell search method in a GMR system, and belongs to the technical field of implementation of mobile terminal devices. The method comprises the following steps: in a BCCH frequency point search process during startup of a terminal, dividing BCCH frequency point search into several steps, and carrying out search according to a sequence of priorities from high and low, and the sequence of priorities from high and low is as follows: A, a cell frequency point corresponding to RPLMN; B, a neighbor cell frequency point list of cells corresponding to RPLMN; C, system message broadcast Concurrent BCCH List; D, a NV storage BCCH frequency point list; E, and all frequency point lists supported by the terminal. In the method, as long as the terminal cannot normally interprets the system message on the BCCH channel, the BCCH frequency point search process of the next step is started; and in the search process of each step, the terminal does not search the searched frequency points. By adoption of the method, the problem that the GMR terminal carries out blind frequency point search to waste a long time can be well solved.

Description

technical field [0001] The invention belongs to the technical field of mobile terminal equipment realization, and relates to a cell search method in a GMR system. Background technique [0002] Geostationary orbit satellite mobile communication (abbreviation: GMR) standard stipulates that the uplink and downlink operating frequencies of the system are 1626.5MHz to 1660.5MHz and 1525.0MHz to 1559.0MHz respectively, and the bandwidth is 34HMz. According to the characteristics of the GMR wireless channel, the 34MHz bandwidth is divided into 1087 frequency points, and the bandwidth of each frequency band is 31.25KHz. [0003] According to actual needs, the system divides the wireless resources of 34MHz bandwidth into different channel types, usually divided into two categories: control channel and traffic channel. The control channel is mainly used to carry signaling or data for system synchronization, and is a channel shared by all users, such as broadcast control channel (abbr...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04W48/16
CPCH04W48/16
Inventor 段红光罗一静郑建宏张仁迟
Owner CHONGQING UNIV OF POSTS & TELECOMM
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