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Communication method and device for channel state information reporting

A technology of channel state information and communication method, which is applied in the field of communication method and equipment for channel state information reporting, and can solve problems such as decoding time delay and budget constraints

Active Publication Date: 2021-04-27
ALCATEL LUCENT SHANGHAI BELL CO LTD +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Therefore, the uncertainty of the occurrence of aperiodic CSI-RS and the decoding time of the downlink control channel make the delay budget for CSI reporting become tight

Method used

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  • Communication method and device for channel state information reporting
  • Communication method and device for channel state information reporting
  • Communication method and device for channel state information reporting

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Embodiment Construction

[0032] Embodiments of the present disclosure will be described in more detail below with reference to the accompanying drawings. Although certain embodiments of the present disclosure are shown in the drawings, it should be understood that the disclosure may be embodied in various forms and should not be construed as limited to the embodiments set forth herein; A more thorough and complete understanding of the present disclosure. It should be understood that the drawings and embodiments of the present disclosure are for exemplary purposes only, and are not intended to limit the protection scope of the present disclosure.

[0033] The term "network device" used herein refers to a base station or other entities or nodes with specific functions in a communication network. "Base Station" (BS) may mean a Node B (NodeB or NB), an Evolved Node B (eNodeB or eNB), a Remote Radio Unit (RRU), a Radio Head (RH), a Remote Radio Head (RRH), a repeater, Or low power nodes such as pico base s...

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Abstract

Embodiments of the present disclosure provide a communication method and device for channel state information reporting. The method includes: receiving a request from the network device for channel state information (CSI) of a channel between the network device and the terminal device, the request indicating reference signal resources used to determine the CSI; and based on the number of reference signal resources and the first threshold The comparison of the numbers determines the delay budget, the delay budget indicates the position of the first subframe relative to the second subframe, the CSI will be transmitted to the network device in the first subframe, and the request will be received in the second subframe.

Description

technical field [0001] Embodiments of the present disclosure generally relate to communication technologies, and more specifically, relate to a communication method and device for reporting channel state information. Background technique [0002] Beamformed Channel State Information Reference Signal (CSI-RS) is a very important feature introduced in Long Term Evolution (LTE) Release 13, which makes it possible to use large-scale antenna arrays in LTE systems without the need for A complex codebook is defined like the traditional non-precoded CSI-RS. When the number of active terminal devices is small, the terminal-device-specific beamformed CSI-RS can achieve high CSI measurement quality and high reference signal efficiency with terminal-device-oriented microbeam groups. However, when the number of active terminal devices is large, the CSI-RS overhead will be large. This becomes one of the main issues of beamformed CSI-RS specific to a terminal device. [0003] In recent ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04B7/06H04L1/00H04L5/00H04W72/04
CPCH04B7/0626H04L1/0027H04L5/0048H04W72/23
Inventor 张晴川张闽
Owner ALCATEL LUCENT SHANGHAI BELL CO LTD
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