Communication device and method for selecting communication cell in communication system
A communication system and communication device technology, applied in wireless communication, electrical components, power management, etc., can solve the problems of lengthening the process of cell search and accessing cells, affecting user experience, and unable to guarantee terminal performance, etc., to reduce cell search time, reduce measurement complexity, and reduce terminal complexity
Active Publication Date: 2015-04-22
CHINA MOBILE COMM GRP CO LTD
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Problems solved by technology
It is not optimal to access the cell based solely on the measurement of RSRP, and often cannot guarantee the performance of the terminal when it is working normally.
[0003] In addition, there is also a technical solution in the prior art that simply uses the pilot signal-to-interference ratio to select the primary cell. This technical solution needs to traverse all the carrier frequencies of the frequency band supported by the terminal, which will lead to cell search and access to the cell. The process is lengthened, which affects the user experience
In addition, this solution is not suitable for the LTE (Long Term Evolution) system, because the LTE system uses Reference Signal Received Quality (RSRQ) as the evaluation of the received quality of the reference signal instead of the traditional pilot signal-to-interference ratio
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[0034] The method and communication settings for selecting a communication cell in a communication system according to the embodiments of the present application will be described below with reference to the accompanying drawings.
[0035] figure 1 A method 1000 for selecting a communication cell in a communication system according to an embodiment of the present application is shown. Such as figure 1 As shown, in step S101, the terminal sequentially or randomly selects and measures one of the multiple communication frequency points supported by the communication system. For example, as known in the art, 2300-2400MHz is an important frequency band for TD-LTE deployment, such as figure 2 shown. For illustrative purposes, figure 2 Five 20MHz communication frequency points f1, f2, f3, f4 and f5 are configured on the system side of the 2300-2400MHz frequency band as an example. Each frequency point supports multiple communication cells, for example, it is assumed that f5 co...
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The invention discloses a communication device and a method for selecting a communication cell in a communication system. A communication frequency range supported by the communication system comprises a plurality of communication frequency points, and the method comprises the following steps of: measuring pilot signal receiving power or reference signal receiving power of a plurality of cells corresponding to one of the communication frequency points; judging whether the maximum in the measured pilot signal receiving power or reference signal receiving power exceeds a first threshold value, if so, determining the total receiving power of a communication cell corresponding to the pilot signal receiving power or reference signal receiving power which exceeds the first threshold value, otherwise, measuring pilot signal receiving power or reference signal receiving power of a plurality of cells corresponding to other communication frequency points in the communication frequency points, and returning to the judging step; and selecting the current service cell based on the determined total receiving power.
Description
technical field [0001] The content disclosed in this application relates to a communication device and a method for selecting a communication cell in a communication system. Background technique [0002] At present, when a terminal selects a communication cell, it only measures the Signal Received Power Reference (RSRP). As long as the RSRP of the cell corresponding to the measurement frequency point meets a certain strength requirement, the terminal is connected to the cell. It is not optimal to access a cell simply based on the measurement of RSRP, and often cannot guarantee the performance of the terminal when it is working normally. [0003] In addition, there is also a technical solution in the prior art that simply uses the pilot signal-to-interference ratio to select the primary cell. This technical solution needs to traverse all the carrier frequencies of the frequency band supported by the terminal, which will lead to cell search and access to the cell. The process...
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IPC IPC(8): H04W36/08H04W36/30H04W52/24
Inventor 李男
Owner CHINA MOBILE COMM GRP CO LTD