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Method and device for switching cells and communication system thereof

A cell handover and terminal handover technology, applied in wireless communication, electrical components, etc., can solve the problems of terminal call handover failure, dropped calls, discarded, etc., and achieves the effect of reducing the number of pseudo-random code phase offsets and making calls smoother

Inactive Publication Date: 2010-03-24
HUAWEI TECH CO LTD
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  • Abstract
  • Description
  • Claims
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Problems solved by technology

[0004] In the process of realizing the present invention, the inventor found that there are at least the following problems in the prior art: for the pseudo-random code phase offsets exceeding the threshold number, the base station controller will discard the pseudo-random code phase offsets exceeding the threshold Neighborhood
When the useful neighbor list is deleted without notifying the terminal, it will cause problems such as terminal call switching failure and call drop

Method used

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  • Method and device for switching cells and communication system thereof
  • Method and device for switching cells and communication system thereof
  • Method and device for switching cells and communication system thereof

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Embodiment Construction

[0024] The present invention will be further explained below in conjunction with specific embodiments and accompanying drawings.

[0025] In order to solve the problem that the neighbor cell list is too long, the number of pseudo-random code phase offsets in the neighbor cell list is too large, and useful lists are not merged, resulting in terminal call handover failure and call drop, etc., the embodiment of the present invention provides a The method of cell handover.

[0026] The method for cell switching provided by the embodiment of the present invention is introduced in detail below, see image 3 :

[0027] 301. Divide the microcells within the signal coverage of the macrocell base station into at least two clusters; assign the same pseudo-random code phase offset group to each cluster.

[0028] A clustering such as Figure 4 As shown, there are 16 microcells within the signal coverage of the macrocell base station, and the radius of the signal coverage of the microcel...

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Abstract

The embodiment of the invention discloses a method for switching cells. The method comprises the following steps: dividing micro cells under the coverage of signals of macro cell base stations into atleast two clusters, distributing same phase bias groups of pseudo random codes to each cluster, determining target micro cells in each cluster based on the phase bias of the pseudo random codes carried by the terminal switching requests, distributing public traffic channels to the micro cells to switch cells, and switching the terminal from the public traffic channels to common traffic channels.The embodiment of the invention also provides a cell switching device and a communication system thereof, solving the problems of failures, call drops and the like of terminal talk switching as a result of not merging of useful lists due to overlong neighbor lists.

Description

technical field [0001] The present invention relates to a mobile communication system, in particular to a cell switching method, device and communication system. Background technique [0002] In a cellular mobile communication system, due to the movement of a user terminal (user equipment), the user terminal will move from the coverage area of ​​one cell to the coverage area of ​​another cell. In order to ensure the continuity of the call of the user terminal, it is necessary to switch the wireless connection between the user terminal and the base station from the original cell to a new cell, which is the handover process in the mobile communication system. The general process of switching is as follows figure 1 As shown: the user terminal measures the wireless quality of multiple target cells, and reports the measurement results to the network; the network selects the target cell according to the measurement results, prepares wireless resources for the user terminal, and t...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04W36/04H04W36/18
Inventor 陈林吴洁邓爱林
Owner HUAWEI TECH CO LTD
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