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Method for searching district frequency

A frequency search and cell technology, applied in the field of suitable cell frequency search, can solve the problems of slow cell frequency, many searches, and inability to ensure that user equipment can quickly search for suitable cells, etc., to shorten the time and reduce the number of searches. Effect

Inactive Publication Date: 2008-07-23
上海宇梦通信科技有限公司
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, in the prior art, the cell frequency search method is generally implemented by first searching in the serving cell stored in the mobile information system, and if the search cannot be found in the serving cell, then the full-frequency search is implemented. This cell frequency search method has a high probability of entering the full-frequency search, so more searches are required, and the speed of searching for a suitable cell frequency is relatively slow.
In the Chinese invention patent specification CN1756435 (announcement date: April 05, 2006), a cell search method is disclosed. The method needs to store multiple frequency bands in the mobile communication terminal, and assign a certain priority to each frequency band according to certain rules. level, and then perform a cell search for cells belonging to the required network according to the priority; this method still needs to search for a suitable cell in at least one frequency band, so it still cannot ensure that the user equipment can quickly search for a suitable cell after it is turned on. community

Method used

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  • Method for searching district frequency

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Experimental program
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Effect test

Embodiment 1

[0023] Embodiment 1, the cell frequency search method of the present invention can be realized by maintaining and updating a first frequency list stored in the memory of the user equipment and a second frequency list stored in the storage unit of the user equipment, The specific method is as follows:

[0024] Such as figure 2 As shown, when the user equipment is powered on, read the current second frequency list from the storage unit of the user equipment, add signal strength information (S value) for each record, and set the corresponding S value to zero, forming the second A frequency list, and then store the first frequency list in the internal memory of the user equipment; then search in sequence according to the order of the first frequency list, if the search fails, that is, no suitable cell is found, start to support the user equipment Cell search is performed within the full frequency range of the Wherein, the first frequency list is stored in the memory of the user...

Embodiment 2

[0033] Embodiment 2, the cell frequency search method of the present invention can also be realized through a separate third frequency list stored in the storage unit of the user equipment, and the specific method is as follows:

[0034] When the user equipment (UE) in the mobile communication system is powered on or leaves the service area, it will search in sequence according to the order of the third frequency list. If the search fails, that is, no suitable cell is found, it will start within the full frequency range supported by the user equipment. Do a neighborhood search. Wherein, the third frequency list is stored in the storage device of the user equipment, so it will not be lost even in the case of power failure, and the information contained in each record in the third frequency list includes: frequency, frequency corresponding The length of the public land mobile network (PLMN) and S value is N, and N can be adjusted according to the capability of the user equipment...

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Abstract

The invention discloses a frequency searching method for a community, wherein the method preferentially carries out community frequency search in a frequency table which contains a serviced community and the adjacent community information which are resided in a user facility, next adaptive community frequency search is accelerated after opening machine or leaving off a service area, therefore the adaptive community frequency can be effectively searched, the time that a user facility is connected to the network is shortened, searching times of the community frequency are reduced, therefore the purpose of electricity saving is achieved.

Description

technical field [0001] The invention relates to a cell frequency search method, in particular to a suitable cell frequency search method for a mobile communication system. Background technique [0002] When a user equipment (UE) in a mobile communication system is powered on or leaves a service area, it needs to search for a suitable cell within a supported frequency range according to its own capabilities and then camp on it. However, in the prior art, the cell frequency search method is generally implemented by first searching in the serving cell stored in the mobile information system, and if the search cannot be found in the serving cell, then the full-frequency search is implemented. This cell frequency search method has a high probability of entering the full-frequency search, so more searches need to be performed, and the speed of searching for a suitable cell frequency is relatively slow. In the Chinese invention patent specification CN1756435 (announcement date: Ap...

Claims

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Application Information

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IPC IPC(8): H04B1/707H04W48/16
Inventor 熊谱翔郭池
Owner 上海宇梦通信科技有限公司
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