Channel prediction method and device

一种信道预测、预测值的技术，应用在通信领域，能够解决信道性能差、准确性不高等问题

Active Publication Date: 2021-10-26
HUAWEI TECH CO LTD
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] However, in the real environment, the channel will change with time and the channel will be disturbed by noise. The interference factors of the estimated value of the timing adjustment and the estimated value of the phase difference also include channel variation and noise. Using the timing adjustment subject to channel variation and noise interference The estimated value of the quantity and the estimated value of the phase difference are used for timing adjustment compensation and phase compensation, and the accuracy is not high, which will lead to poor performance of channel prediction

Method used

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Embodiment Construction

[0105] In the embodiments of the present application, words such as "exemplary" or "for example" are used as examples, illustrations or illustrations, and any embodiment or solution described as "exemplary" or "for example" in the embodiments of the present application It should not be construed as preferred or advantageous over other embodiments or aspects. Rather, the use of words such as "exemplary" or "such as" is intended to present related concepts in a concrete manner.

[0106] In this application, "at least one" means one or more, and "multiple" means two or more. "And / or" describes the association relationship of associated objects, indicating that there may be three types of relationships, for example, A and / or B, which can mean: A exists alone, A and B exist simultaneously, and B exists alone, where A, B can be singular or plural. The character " / " generally indicates that the contextual objects are an "or" relationship.

[0107] The embodiments of the present ap...

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Abstract

The invention provides a channel prediction method and device. The method comprises the following steps: performing channel prediction according to estimated values of the channel coefficients corresponding to the respective SRSs of subframes before a t-th subframe received from terminal equipment and measurement information to obtain a predicted value of the channel coefficient corresponding to the SRS of the t-th subframe; performing channel estimation according to the SRS of the t-th subframe received from the terminal equipment; performing timing adjustment amount compensation and phase compensation on the estimated value of the channel coefficient corresponding to the SRS of the t-th subframe according to the predicted value of the channel coefficient corresponding to the SRS of the t-th subframe to obtain an estimated value of the channel coefficient corresponding to the SRS of the t-th subframe subjected to the first compensation; and performing channel prediction according to the estimated value of the channel coefficient corresponding to the SRS of the t-th subframe subjected to the first compensation and the estimated values of the channel coefficients corresponding to the respective SRSs of the subframes subjected to the second compensation before the t-th subframe to obtain the channel coefficient at the downlink signal sending moment after the SRS of the t-th subframe is received.

Description

technical field [0001] The present application relates to the field of communication technologies, and in particular to a channel prediction method and device. Background technique [0002] With the development of communication technology, 5G new radio (NR) adopts multi-user multiple-input multiple-output (MUMIMO) technology. MU MIMO users can reuse the same time-domain resources and frequency-domain resources, greatly improving system capacity. . When the spatial degree of freedom is sufficient and the downlink channel state information (CSI) is known to the base station, the base station can avoid inter-user interference by precoding the signal sent to the terminal equipment, thereby realizing space division multiplexing. In a time division duplex (TDD) system, the base station estimates the uplink CSI relying on the sounding reference signal (SRS) sent by the terminal, and applies it to downlink precoding according to channel reciprocity. Due to terminal movement and ch...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04W24/08H04B17/391
CPCH04W24/08H04B17/3913H04B17/391H04B7/0452H04L25/02H04L5/00
Inventor 秦一平王勃
Owner HUAWEI TECH CO LTD
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