Multi-mode terminal measurement cell selection method

A cell selection, multi-mode terminal technology, applied in the field of communication and cellular wireless communication systems, can solve the problems of ignoring the re-enhanced cells, unfavorable cell reselection and accurate start and execution of handovers, etc.

Active Publication Date: 2019-02-12
CHONGQING UNIV OF POSTS & TELECOMM
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Problems solved by technology

[0006] The problem with the existing technology is that when the reception signal of each cell of the terminal changes, it still only measures a few cells that are determined by the original historical information, and the cell that becomes stronger again will be ignored, which is not conducive to cell reselection Accurate initiation and execution of events such as

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  • Multi-mode terminal measurement cell selection method

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specific Embodiment

[0041] This embodiment is a preferred implementation of the multi-mode terminal measurement cell selection method of the present invention, see figure 1 ,Such as figure 1 As shown, the specific process of this embodiment includes:

[0042] S1. The terminal performs the first measurement task, and measures all cells to be measured;

[0043] S2. The terminal records the cell measured this time as the measured cell;

[0044] S3. The terminal selects N measured cells with the best signal quality as tracking cells;

[0045] In this embodiment, the signal quality can use any kind of cell signal quality parameter; the acquisition method of the cell signal quality parameter can use any calculation method of the cell signal quality parameter in the prior art, and the present invention no limit.

[0046] As a preferred implementation solution of this embodiment, in this step, the SNR of the cell may be used as the cell signal quality parameter, and the terminal selects N cells with ...

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Abstract

The invention discloses a multi-mode terminal measurement cell selection method, comprising the following steps: after a first measurement task is completed: the terminal records the cell measured this time as a measured cell, selects N cells with the best signal quality as tracking cells, and estimates the propagation path delay and strength of each tracking cell as historical propagation path delay and strength of the tracking cell; and in non-first measurement tasks: the terminal estimates the current propagation path delay and strength of each tracking cell, only measures the newly added cells to be tested if the deviation between the current propagation path delay and strength of the tracking cells no less than N/2 and the historical propagation path delay and strength of the trackingcell is less than a preset threshold, and otherwise measures all the cells to be tested. The technical solution provided by the invention effectively reduces the measurement power consumption and theamount of received data of the terminal while ensuring the accuracy of the measurement data reported by the terminal.

Description

technical field [0001] The invention relates to the field of communication technology, in particular to a method for selecting a multi-mode terminal measurement cell in the field of cellular wireless communication systems. Background technique [0002] In a cellular wireless communication system, due to the concept of a cell, in order to manage wireless resources, the terminal needs to complete actions such as cell selection, cell reselection, and handover. The basis for completing cell selection, cell reselection, and handover is to complete the measurement of several cells delivered by the base station. After the terminal completes the measurement of several cells, it implements cell selection, cell reselection, and handover based on the measurement results. In communication systems of different modes, the measurement objects are different. In Global System for Mobile Communications (abbreviation, GSM), it is Received Signal Strength Indication (abbreviation, RSSI), in Tim...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04W24/08H04W24/10H04W4/02H04B17/336H04B17/318
CPCH04W4/02H04W24/08H04W24/10H04B17/318H04B17/336Y02D30/70
Inventor 欧阳卫华蒋文豪李铮
Owner CHONGQING UNIV OF POSTS & TELECOMM
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