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Method and device for realizing cell switching of terminal in high-speed moving state

A cell handover and high-speed mobility technology, applied in wireless communication, electrical components, etc., can solve the problems that the base station does not know the direction of terminal movement, service delay or interruption, etc., so as to reduce network signaling and service overhead, without delay and without network loss , the effect of speeding up

Inactive Publication Date: 2011-06-08
ZTE CORP
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Problems solved by technology

[0004] It has been proved by practice that the existing cell handover technology can meet the fast and reliable handover between cells when the terminal is moving at a medium or low speed. However, when the terminal is moving at a high speed, the existing cell handover technology has the following shortcomings: due to The base station does not know the direction of the terminal's next move, so it can only inform the terminal of the information of all other adjacent cells, and the terminal can only measure the signals of all adjacent cells in sequence according to the information provided by the base station, and then report the appropriate cell and perform to switch
The existing processing method is likely to cause the high-speed mobile terminal to detect a suitable cell, and the current cell signal is completely unavailable, resulting in service delay or interruption, especially for cells in the adjacent cell list When there are many, business delays or interruptions are more likely to occur

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  • Method and device for realizing cell switching of terminal in high-speed moving state
  • Method and device for realizing cell switching of terminal in high-speed moving state
  • Method and device for realizing cell switching of terminal in high-speed moving state

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Embodiment Construction

[0031] In daily life, people usually tend to go to familiar places along a fixed route. Although they sometimes change the route, this is a rare case after all. Between companies; people usually have fixed destinations and intermediate routes if they want to go for leisure or shopping. From the perspective of network handover in the communication field, the above situation is equivalent to the fact that terminals in the network need to perform cell handover due to movement, and in most cases, they will handover to one or some fixed cells. Therefore, the present invention proposes a strategy to optimize wireless terminal handover in high-speed mobile state according to the characteristic that the terminal mobile handover has certain rules: use the handover history records stored in the terminal to let the terminal be prioritized from the adjacent cell list Search for the cell with the most handover times, which greatly increases the probability that the terminal will find a sui...

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Abstract

The invention discloses a method and device for realizing cell switching of a terminal in the high-speed moving state. The method comprises the following steps of: after the terminal receives an adjacent cell list transmitted by a base station, rearranging the adjacent cell list according to stored historic records of cell switching; and sequentially searching and measuring whether cells in the list are accordant with a switching condition according to the rearranged adjacent cell list, reporting to the base station while determining that the cells are accordant with the switching condition, and switching to the cells which are accordant to the switching condition under the control of the base station. The invention also discloses a device for realizing cell switching of the terminal in the high-speed moving state simultaneously. By the method and the device, the terminal can be switched to a suitable cell in the high-speed moving state, so that a service is continuous.

Description

technical field [0001] The present invention relates to network handover technology in the communication field, in particular to a method and device for realizing cell handover under high-speed mobile state of a terminal. Background technique [0002] Modern wireless communication technology has developed rapidly in recent years, and has achieved wide-area coverage all over the world, and terminals have thus been widely popularized. Modern wireless communication technologies adopt the cellular network model. Each base station covers a limited geographical area. This area is called a cell, and multiple adjacent cells together form a communication network with a wide coverage area. Whether it is the existing 2G network, 3G network or the next-generation 4G network, the cell handover technology in the communication system is one of the very important technologies. The cell handover technology enables the terminal to move from one cell to another. The established service connec...

Claims

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Application Information

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IPC IPC(8): H04W24/02H04W24/10H04W36/08H04W36/30
CPCH04W36/0083H04W36/00835H04W36/00837
Inventor 文永明
Owner ZTE CORP
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