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Method and device for calculating beam forming factors used in changing-over process

A beamforming and handover process technology, applied in the field of communication, can solve the problems of complexity, waste of time and resources, and achieve the effect of improving the success rate and simplifying the handover process

Active Publication Date: 2013-05-08
ALCATEL LUCENT SHANGHAI BELL CO LTD
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  • Abstract
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Problems solved by technology

It can be seen that this method is too complicated and wastes a lot of time and resources to switch the transmission mode. On the other hand, the performance of transmission with diversity mode is not as good as that with beamforming mode with deterministic factor

Method used

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  • Method and device for calculating beam forming factors used in changing-over process
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  • Method and device for calculating beam forming factors used in changing-over process

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Embodiment Construction

[0043] The present invention will be described in further detail below in conjunction with the accompanying drawings.

[0044] figure 1 A schematic diagram showing a device for calculating beamforming factors during handover according to one aspect of the present invention; a source cell includes a report receiving unit 1011, a handover request sending unit 1012, a response receiving unit 1013, and a reconfiguration request sending unit 1014; a target cell It includes handover request receiving means 1021, association establishing means 1022, response sending means 1023, access receiving means 1024 and communication establishing means 1025; user equipment includes report sending means 1031, reconfiguration request receiving means 1032 and cell access means 1033.

[0045] Various devices of the source cell, the target cell, and the user equipment cooperate with each other to complete the calculation of the beamforming factor during the handover process. Specifically, the repor...

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Abstract

The invention aims to provide a method and a device for calculating beam forming factors used in a changing-over process. A source cell receives measurement reports sent by a user device, calculates to obtain the beam forming factors of the user device in a target cell by using the measurement reports, writes the beam forming factors in a changing-over request and sends the beam forming factors to the target cell, and sends a wireless resource control reconfiguration request to the user device according to a changing-over response feeding back by the target cell. The user device accesses the target cell according to the reconfiguration request. The target cell sets up a communication connection with the user device according to the beam forming factors by adopting a beam forming mode. Compared with the prior art, the source cell calculates the beam forming factors of the user device in the target cell ahead of time, writes the beam forming factors in the changing-over request and sends the beam forming factors to the target cell, the target cell adopts the beam forming mode according to the mentioned situations, and sets up a communication connection with the user device, therefore the changing-over process is simplified, and the success rate of changing-over is improved.

Description

technical field [0001] The present invention relates to the technical field of communications, and in particular to a technique for calculating beamforming factors during handover. Background technique [0002] In the beamforming (beamforming) technology, as a key parameter of the beamforming, the beamforming factor (beamforming weight) can be calculated according to the azimuth angle of the user equipment. After the user equipment switches to the target cell (target cell), since the beamforming factor cannot be calculated immediately, the user equipment does not have an initial beamforming factor to configure data, which will affect the efficiency and efficiency of sending data during the initial handover process. Success rate. [0003] In the prior art, some systems use diversity mode to configure data at the beginning of handover. For example, after the user equipment accesses the target cell, the target cell uses diversity mode to send a Random Access Response (Random ...

Claims

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Application Information

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IPC IPC(8): H04W24/10H04W36/00H04W36/08
Inventor 王勇徐勋华雷宏
Owner ALCATEL LUCENT SHANGHAI BELL CO LTD
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