LTE terminal measurement cell selection method

A technology for cell selection and terminal measurement, applied in cellular wireless communication systems and communication fields, can solve the problems of unfavorable cell reselection and handover accurate start and execution, ignoring re-intensified cells, etc.

Active Publication Date: 2019-03-01
CHONGQING UNIV OF POSTS & TELECOMM
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Problems solved by technology

[0005] 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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  • LTE terminal measurement cell selection method

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specific Embodiment

[0036] This embodiment is a preferred implementation of the LTE 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:

[0037] S1. The terminal performs the first measurement task, and measures all cells to be measured;

[0038] S2. The terminal records the cell measured this time as the measured cell;

[0039] S3. The terminal selects N measured cells with the best signal quality as tracking cells;

[0040] 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.

[0041] 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 the lar...

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Abstract

The invention discloses an LTE terminal measurement cell selection method. The method comprises the following steps: after a measurement task is completed for the first time, recording, by a terminal,the current measurement cells as measured cells, and selecting N cells with the best signal quality from the measured cells to serve as tracking cells; tracking the timing deviations of the trackingcells to serve as the historical timing deviations of the tracking cells; in a non-first-time measurement task, estimating, by the terminal, the current timing deviations of the tracking cells; if thedifference values between the current timing deviations of the tracking cells and the historical timing deviations of the tracking cells are all less than a preset threshold value, selecting, by theterminal, a to-be-measured cell newly added by the present measurement task as the measurement cell for measurement; otherwise, selecting, by the terminal, all to-be-measured cells of the present measurement task as the measurement cells for measurement. By adoption of the technical scheme disclosed by the invention, the measurement power consumption of the terminal and the received data size areeffectively reduced while ensuring the accuracy of the measurement data reported by the terminal.

Description

technical field [0001] The invention relates to the field of communication technologies, in particular to a method for selecting cells for LTE terminal measurement 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 the Long Term Evolution (abbreviated, LTE) communication system, the measurement object of the terminal is Reference Signal Received Power (abbreviated, RSRP). [0003] In the measurement task of the terminal, it is ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04W48/16H04W24/10H04W36/32H04W36/00H04W48/20
CPCH04W24/10H04W36/0083H04W36/32H04W48/16H04W48/20Y02D30/70
Inventor 李铮蒋文豪欧阳卫华
Owner CHONGQING UNIV OF POSTS & TELECOMM
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