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Method and device for coordinated multipoint transmission

A multi-point transmission and cooperative point technology, applied in the field of communication, can solve problems such as poor channel capacity and high computational complexity

Active Publication Date: 2018-07-13
HUAWEI TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0005] However, the computational complexity of the Global BF scheme is relatively high, and the channel capacity is not good

Method used

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  • Method and device for coordinated multipoint transmission
  • Method and device for coordinated multipoint transmission
  • Method and device for coordinated multipoint transmission

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Embodiment Construction

[0048] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some, not all, embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without creative efforts fall within the protection scope of the present invention.

[0049] refer to figure 1 , figure 1 It is an application scenario diagram of cooperative transmission provided by an embodiment of the present invention. Such as figure 1 As shown in , it is assumed that two coordination points perform cooperative transmission on the same user equipment (User Equipment, UE).

[0050] exist figure 1 In a scenario where two coordinating points perform joint transmission to a UE at the same time, the two coordinating points ne...

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Abstract

The embodiment of the present invention discloses a method and equipment for coordinated multi-point transmission. The downlink channel matrix corresponding to two coordinated multi-points is decomposed respectively to reduce the amount of calculation, and according to the decomposed coordinated multi-point The downlink channel matrix obtains the transmission weight matrix corresponding to the coordinated multi-point, so that the direction of the received signal of each coordinated multi-point arriving at the UE side is partially coherent, and a coherent combination gain is obtained, so that at a lower computational complexity, still Coherent combining gain can be guaranteed.

Description

technical field [0001] The present invention relates to the communication field, in particular to a method and equipment for coordinated multi-point transmission. Background technique [0002] At present, coordinated transmission is the focus of research in the industry. Coordinated Multiple Points (COMP), which has been extensively studied, is a type of coordinated transmission. The coordinated points (Coordinated Points) here can be multiple cells, multiple sectors, and multiple relays. nodes, differently polarized antennas of the same antenna array, etc. [0003] There are many ways of cooperative transmission, one of which is called joint transmission (JT), that is, two coordination points transmit signals to UE at the same time, according to whether the signals arriving at UE are coherent, JT is divided into coherent JT and non-coherent JT. [0004] In the process of joint transmission, it is necessary to determine the transmission weight (for example, the transmissio...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04L1/06H04B7/06
CPCH04B7/024
Inventor 熊雄
Owner HUAWEI TECH CO LTD
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