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Methods for indicating and determining pre-coded vector, and receiving and transmitting terminal equipment

A technology of precoding vectors and vectors, which is applied in the direction of radio transmission systems, electrical components, transmission systems, etc., and can solve problems such as complex, incapable of accurately describing the channel environment, and limited precoding effects

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

AI Technical Summary

Problems solved by technology

However, the real channel environment is very complex, and the channel environment cannot be accurately described based on the existing codebook. Therefore, the precoding vector determined based on the existing codebook can only achieve a rough match with the channel, and the precoding effect is very limited.

Method used

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  • Methods for indicating and determining pre-coded vector, and receiving and transmitting terminal equipment
  • Methods for indicating and determining pre-coded vector, and receiving and transmitting terminal equipment
  • Methods for indicating and determining pre-coded vector, and receiving and transmitting terminal equipment

Examples

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Embodiment Construction

[0217] figure 1 is an exemplary schematic diagram of a wireless communication network 100 according to an embodiment of the present invention. Such as figure 1 As shown, the wireless communication network 100 includes base stations 102-106 and terminal equipment 108-122, wherein the base stations 102-106 can be connected to each other through a backhaul (backhaul) link (as shown by the straight lines between the base stations 102-106) For communication, the backhaul link may be a wired backhaul link (such as optical fiber, copper cable), or a wireless backhaul link (such as microwave). Terminal devices 108-122 may communicate with corresponding base stations 102-106 via wireless links (as indicated by broken lines between base stations 102-106 and terminal devices 108-122).

[0218] The base stations 102-106 are used to provide wireless access services for the terminal devices 108-122. Specifically, each base station corresponds to a service coverage area (also called a cel...

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Abstract

The embodiment of the invention provides methods for indicating and determining a pre-coded vector and receiving and transmitting terminal equipment. The method for indicating the pre-coded vector comprises the steps of determining a plurality of component vectors of an ideal pre-coded vector based on at least one basic codebook and the weight of each component vector, wherein each component vector is a column vector in the at least one basic codebook; sending a pre-coded vector indication, wherein the pre-coded vector indication is used for indicating the plurality of component vectors and the weight of each component vector. The embodiment of the invention also provides a method for determining the pre-coded vector, receiving terminal equipment and transmitting terminal equipment. According to the technical scheme provided by the embodiment of the invention, the basic codebook is built based on a plurality of parameters, so that the basic codebook can describe channel environment more accurately. Therefore, based on the pre-coded vector determined according to the basic codebook provided by the embodiment of the invention, the channel can be matched more accurately, and thus thepre-coding effect is enhanced.

Description

technical field [0001] Embodiments of the present invention relate to precoding technologies, and in particular, relate to a method for indicating and determining a precoding vector and receiving and transmitting end devices. Background technique [0002] The emergence of multiple input multiple output (Multiple Input Multiple Output, MIMO) technology has brought revolutionary changes to wireless communication. MIMO technology can significantly improve the performance of the wireless communication system by deploying multiple antennas on the transmitting end device and the receiving end device. For example, in a diversity scenario, MIMO technology can effectively improve transmission reliability; in a multiplexing scenario, MIMO technology can greatly improve transmission throughput. [0003] The MIMO system usually uses precoding technology to improve the channel, so as to enhance the effect of spatial multiplexing (Spatial Multiplexing). Specifically, the precoding techn...

Claims

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Application Information

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IPC IPC(8): H04B7/0413H04B7/0456
CPCH04B7/0413H04B7/0456H04B7/0478H04B7/0417H04B7/0639H04B7/0634
Inventor 金黄平韩玮毕晓艳尚鹏
Owner HUAWEI TECH CO LTD
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