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Method for indicating and determining precoding vector and receiving and transmitting end equipment

A precoding vector and vector technology, applied in electrical components, radio transmission systems, transmission systems, etc., can solve problems such as complexity, limited precoding effect, and inability to accurately describe the channel environment, so as to accurately match the channel and improve precoding. effect of effect

Active Publication Date: 2021-08-27
HUAWEI TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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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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  • Method for indicating and determining precoding vector and receiving and transmitting end equipment
  • Method for indicating and determining precoding vector and receiving and transmitting end equipment
  • Method for indicating and determining precoding vector and receiving and transmitting end equipment

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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 devices 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 cell,...

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Abstract

Embodiments of the present invention provide a method for indicating and determining a precoding vector and receiving and transmitting end devices. The method for indicating a precoding vector includes: determining a plurality of component vectors of an ideal precoding vector and a weight of each component vector based on at least one basic codebook, wherein each component vector is one of the at least one basic codebook Column vector: sending a precoding vector indication, where the precoding vector indication is used to indicate the multiple component vectors and the weight of each component vector. The embodiment of the present invention also provides a method for determining a precoding vector, a receiving end device and a transmitting end device. The technical solution provided by the embodiment of the present invention constructs a basic codebook based on various parameters, which enables the basic codebook to describe the channel environment more accurately. In this way, based on the precoding vector determined based on the basic codebook provided by the embodiment of the present invention, the channel can be matched more accurately, thereby improving the precoding effect.

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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Patent Type & Authority Patents(China)
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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