A speed triggered LTE-R handoff method

A handover and fast handover technology, applied in electrical components, wireless communication, etc., to achieve the effect of increasing effectiveness and success rate

Inactive Publication Date: 2018-12-28
KUNMING UNIV OF SCI & TECH
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0005] The technical problem to be solved in the present invention is to provide a speed-triggered LTE-R handover method aimed at the limitations and deficiencies of the prior art, so as to solve the untimely and low

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  • A speed triggered LTE-R handoff method
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  • A speed triggered LTE-R handoff method

Examples

Experimental program
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Embodiment 1

[0031] Embodiment 1: as Figure 1-2 As shown, a speed-triggered LTE-R handover method uses the measurement report uploaded by the train mobile terminal to compare the reference signal received power of the target cell and the serving cell to determine whether to trigger the handover; next, the train current Compare the speed with the set speed threshold to decide whether to start the fast switching program, and run the regular switching program if the speed threshold is not reached; finally, if the judgment result is to run the fast switching program, the calculated train arrival The time of switching the reference point is compared with the set time threshold value, if the time is less than the time threshold value, wait for the next measurement report before switching;

[0032] The specific steps are:

[0033] Step1: Carry out a large number of measurement statistics on the location when the train is switched, and obtain an estimated switching reference point P(x 1 ,y 1 )...

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Abstract

The invention relates to a speed-triggered LTE-R handoff method and belongs to the technical field of wireless network communication handoff. The invention compares the reference signal receiving power of the target cell and the service cell through the measurement report uploaded by the train mobile terminal to determine whether to trigger the handover or not. Next, the current speed of the trainis compared with the set speed threshold value to determine whether to start the fast switching program, and the conventional switching program is run before the speed threshold value is reached; finally, if the decision result is to run the fast handover program, the calculated train arrival time at the handover reference point is compared with the set time threshold value, and if the time is less than the time threshold value, the next measurement report is waiting for the handover. The invention solves the problem that the prior art has no influence on the LTE-R handover is not timely, andthe success rate is not high, which increases the effectiveness and success rate of train handover in the inter-cell.

Description

technical field [0001] The invention relates to a speed-triggered LTE-R handover method, and belongs to the technical field of wireless network communication handover. Background technique [0002] When the train is running at high speed on the rails, because the speed is too fast, the signal switching between cells will not be timely. Therefore, the train can quickly and efficiently switch signals between cells, and the research on improving the success rate of switching is of great significance. Significance. [0003] At present, for the handover of trains on the rails, the traditional algorithm is to use the joint decision algorithm based on RSRP and RSRQ, which can avoid frequent handover and high call drop rate to a certain extent; Using the same hysteresis and trigger delay time for judgment will easily cause the two situations of switching too early or too late. [0004] Afterwards, an optimization algorithm for switching parameters based on moving speed characteris...

Claims

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Application Information

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IPC IPC(8): H04W36/00H04W36/30H04W36/32
CPCH04W36/0083H04W36/30H04W36/32
Inventor 彭艺尹玉梅祁俊辉
Owner KUNMING UNIV OF SCI & TECH
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