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A communication method, network device, terminal device and storage medium

A technology of terminal equipment and network equipment, which is applied in the field of communication, can solve problems affecting single-user beamforming and loss of quantization accuracy, and achieve the effect of improving reporting accuracy and good user experience

Active Publication Date: 2021-12-14
HUAWEI TECH CO LTD
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, this also leads to other scenarios, such as wireless home broadband user (wireless to the X, WTTx) scenarios, PMI-based feedback has the problem of quantization accuracy loss, which affects downlink single user beam forming (single userbeam forming, SU-BF) or Performance of multi-user beam forming (MU-BF)

Method used

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  • A communication method, network device, terminal device and storage medium
  • A communication method, network device, terminal device and storage medium
  • A communication method, network device, terminal device and storage medium

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Embodiment Construction

[0034] Embodiments of the present application are described below in conjunction with the accompanying drawings. Apparently, the described embodiments are only part of the embodiments of the present application, not all of the embodiments. Those of ordinary skill in the art know that, with the development of technology and the emergence of new scenarios, the technical solutions provided in the embodiments of the present application are also applicable to similar technical problems.

[0035] Embodiments of the present application provide a communication method, network equipment, terminal equipment, and storage medium, for scenarios where the channel information is relatively stable and the channel feedback cycle does not need to be too frequent, for example, the terminal equipment is a low-mobility equipment, or the location For fixed devices, such as WTTx terminal equipment, customer premise equipment (CPE), terminal equipment deployed in the home, or high-power terminal equip...

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Abstract

The present application discloses a communication method, including: a network device receives indication information and capability information of a terminal device, where the indication information is used to indicate that the terminal device is a low-mobility device, or a device deployed in a home, or a device at a fixed location, The capability information is used to indicate that the terminal device can support the actual amplitude information and phase information of the explicit feedback channel. The network device configures the reporting mode of the channel state information CSI of the terminal device as a preset mode. The network device sends a channel state information reference signal CSI‑RS to the terminal device, and the CSI‑RS includes an air interface resource location of the CSI‑RS, a sending cycle of the CSI‑RS information, and a feedback cycle of the CSI. The network device receives channel information explicitly fed back by the terminal device, and the channel information includes actual amplitude information and phase information of the channel. The technical solution of the present application can improve the CSI reporting accuracy of Massive MIMO in the WTTx scenario, so that the CPE terminal in the WTTx scenario can obtain better user experience.

Description

technical field [0001] The present application relates to the technical field of communication, and in particular to a communication method. Background technique [0002] Next-generation mobile communication systems require large-capacity and high-quality data transmission. Massive multiple-input multiple-output (Massive MIMO) technology is considered to be one of the key technologies to realize high-speed data transmission in the future. This technology achieves a significant improvement in spectral efficiency by using large-scale antennas. The accuracy of channel state information (CSI) that can be obtained by the base station largely determines the performance of Massive MIMO. The CSI is to enable the base station to obtain the channel status and interference status of the downlink transmission, and the terminal device measures the downlink transmission channel, quantifies and reports the measurement results. [0003] At present, the scheme reported by the terminal equi...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04B7/0413H04B7/06H04L1/06
CPCH04B7/0413H04B7/0626H04L1/0693
Inventor 罗亚军
Owner HUAWEI TECH CO LTD
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