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Information reporting and indicating method, terminal equipment and network equipment

A technology of network equipment and terminal equipment, which is applied in the field of information reporting, terminal equipment and network equipment, and indication methods. It can solve problems such as the inability to determine the precoding matrix, and achieve the effect of improving throughput and optimizing design.

Active Publication Date: 2021-07-16
VIVO MOBILE COMM CO LTD
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  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] Embodiments of the present invention provide an information reporting and indication method, terminal equipment, and network equipment to solve the problem that in an FDD system, the network equipment cannot effectively determine the precoding matrix for downlink transmission based on channel heterogeneity

Method used

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  • Information reporting and indicating method, terminal equipment and network equipment
  • Information reporting and indicating method, terminal equipment and network equipment
  • Information reporting and indicating method, terminal equipment and network equipment

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Embodiment Construction

[0029] When the terminal device and the network device communicate based on the multi-antenna technology, the terminal device can feed back CSI to the network device based on the difference between uplink and downlink channels, so that the network device can determine a precoding matrix for downlink transmission. Specifically, the terminal device can send a Sounding Reference Signal (SRS, Sounding Reference Signal) to the network device, and the network device can determine the uplink channel information based on the SRS, and determine the downlink channel information by using the difference between the uplink channel and the downlink channel, and then determine the Precoding matrix for downlink transmission.

[0030] However, in the FDD system, the mutual dissimilarity between the uplink and downlink channels is only partial, that is, in the angle domain, the departure angle of the downlink channel is equal to the arrival angle of the uplink channel, and in the delay domain, w...

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Abstract

The present invention disccloses an information reporting and indicating method, terminal equipment and network equipment, the information reporting method being applied to the terminal equipment, the information reporting method comprising the steps of: receiving indication information from the network equipment, the indication information being used for indicating the terminal equipment to report phase information of at least one target path corresponding to a downlink channel; and reporting the phase information of the at least one target path to the network equipment according to the indication information. Therefore, the network equipment can obtain the impulse response of the downlink channel by indicating the terminal equipment to report the phase information of the specified path corresponding to the downlink channel and combining the impulse response of the uplink channel and the phase information reported by the terminal equipment on the basis of the partial heterogeneity of the channel, so that the performance of the downlink channel can be improved by optimizing the downlink precoding design. The throughput of downlink transmission is improved.

Description

technical field [0001] The present invention relates to the communication field, in particular to an information reporting and indicating method, terminal equipment and network equipment. Background technique [0002] When the terminal device communicates with the network device, it can feed back channel state information (CSI, Channel State Information) of the downlink channel to the network device, so that the network device can determine the precoding matrix for downlink transmission based on the CSI fed back by the terminal device, and Data is sent to the terminal device based on the precoding matrix, so as to obtain better link performance. [0003] With the development of multi-antenna technology (MIMO, Multi-Input Multi-Output), terminal devices and network devices increasingly communicate based on the multi-antenna technology. When communicating based on the multi-antenna technology, the terminal device also needs to feed back CSI to the network device. Wherein, in...

Claims

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Application Information

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IPC IPC(8): H04B7/0456H04B7/06
CPCH04B7/046H04B7/0626H04L5/0091H04L5/005H04B7/0615H04L25/0224H04L25/0212H04B7/0658H04B7/0456H04L5/0048H04W72/23H04L5/14
Inventor 郤伟
Owner VIVO MOBILE COMM CO LTD
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