Method and device for maintaining list of neighbor cells
A technology of adjacent cells and cells, which is applied in the field of maintaining the list of adjacent cells, and can solve the problems of dropped calls and excessive time of mobile terminals.
Inactive Publication Date: 2010-06-09
爱思开电讯投资(中国)有限公司
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Problems solved by technology
[0007] However, it takes a lot of time to synchronize the channel decoding process and parse the system information, especially when the mobile terminal is in a call state
Therefore, it often happens that the mobile terminal has left the current serving cell but has not successfully switched to the actual adjacent cell T, which will cause the mobile terminal to drop calls
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[0035] Hereinafter, the present invention will be described through specific embodiments with reference to the accompanying drawings, and it should be noted that the present invention is not limited to the embodiments described below.
[0036] figure 1 A flowchart showing a method for creating a neighbor cell list according to an embodiment of the present invention. The method for creating a neighbor cell list is usually performed at predetermined time intervals when the mobile terminal is powered on and when the mobile terminal is in the powered on state.
[0037] Such as figure 1 As shown, first, the mobile terminal M performs a synchronization channel decoding process, such as a cell search process, to obtain synchronization information of each cell from which the mobile terminal M can receive signals (step S100 ). Here, the synchronization information of each cell includes, for example, frame timing information and primary scrambling code parameters of each cell.
[003...
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The invention relates to a method and a device for maintaining a list of neighbor cells. A method for establishing a list of neighbor cells comprises the following steps of executing a decoding process of a synchronous channel in order to acquire the synchronous information of various cells that can receive signals of a mobile terminal; detecting the signal intensity of each cell according to the signals received respectively from the cells; selecting a predetermined number of cells and a given number of cells among all the cells respectively as neighbor cells and standby neighbor cells on the list of the mobile terminal; analyzing the signals containing system information from the neighbor cells and the standby neighbor cells in order to acquire the system information of the neighbor cells and the standby neighbor cells; and storing the synchronous information and the system information of the neighbor cells and the standby neighbor cells, wherein the signal intensity of the predetermined number of cells is the greatest in the cells other than those of maximum signal intensity in all the cells, and the signal intensity of the given number of cells is the greatest in the cells other than those of maximum signal intensity and the predetermined number of cells. The method and the device can avoid conditions of call dropping of the mobile terminal.
Description
technical field [0001] The invention relates to mobile communication technology, in particular to a method and device for maintaining a list of adjacent cells. Background technique [0002] In a mobile communication network, a mobile terminal usually maintains a list of adjacent cells after it is turned on. According to the 3GPP specification, the adjacent cell list generally includes 6 adjacent cells, wherein the 6 adjacent cells are the 6 cells with the highest signal strength except the serving cell where the mobile terminal currently resides. When the mobile terminal is in the idle state, the mobile terminal will periodically perform the synchronization signal decoding process and analyze the system information of the 6 adjacent cells in the adjacent cell list to obtain the synchronization information of the 6 adjacent cells and system information. [0003] In the case of a good communication environment, for example, in plain areas and areas with few buildings, the si...
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IPC IPC(8): H04W8/00H04W24/08
Inventor 黄超殷律罗栋元李相研
Owner 爱思开电讯投资(中国)有限公司