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Phase tracking reference signal configuration, determination method and device, storage medium, base station, user equipment

A reference signal, phase tracking technology, applied in the field of communication, can solve the problems of performance loss, waste of resources, etc.

Active Publication Date: 2021-06-25
SPREADTRUM COMM (SHANGHAI) CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

That is to say, under the critical bandwidth, a smaller bandwidth corresponds to more PT-RS subcarriers, resulting in waste of resources, or a larger bandwidth corresponds to fewer PT-RS subcarriers, resulting in performance loss

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  • Phase tracking reference signal configuration, determination method and device, storage medium, base station, user equipment
  • Phase tracking reference signal configuration, determination method and device, storage medium, base station, user equipment
  • Phase tracking reference signal configuration, determination method and device, storage medium, base station, user equipment

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Embodiment Construction

[0047] As mentioned in the background, the problem with the frequency domain density table in the prior art is that the number of PT-RS subcarriers decreases with the increase of the bandwidth at the critical bandwidth. For example, bandwidth N RB = 7, the frequency domain density is 1, and the number of PT-RS subcarriers is 7; and when the bandwidth increases by one RB, the bandwidth N RB =8, the frequency domain density is reduced to 1 / 2, and the number of PT-RS subcarriers is 4 instead. That is to say, under the critical bandwidth, a smaller bandwidth corresponds to more PT-RS subcarriers, resulting in waste of resources, or a larger bandwidth corresponds to less PT-RS subcarriers, resulting in performance loss.

[0048] The technical solution of the present invention configures the user equipment with the maximum number of subcarriers applicable to at least one frequency domain density through the base station, which can limit the upper limit of the number of subcarriers ...

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Abstract

A phase tracking reference signal configuration, determination method and device, storage medium, base station, and user equipment. The phase tracking reference signal configuration method includes: configuring frequency domain densities of phase tracking reference signals corresponding to various bandwidths for the user equipment; The user equipment is configured with a preset maximum number of subcarriers, and the maximum number of subcarriers is suitable for at least one frequency domain density, so as to determine the insertion position of the phase tracking reference signal. Through the technical solution of the invention, the performance of the PT-RS can be improved while saving transmission resources.

Description

technical field [0001] The present invention relates to the field of communication technology, in particular to a phase tracking reference signal configuration, determination method and device, storage medium, base station, and user equipment. Background technique [0002] Phase-tracking Reference Signal (PT-RS) is the latest reference symbol introduced by New Radio (NR) technology, which is used to combat phase noise caused by clock instability in high-frequency communication. Since the phase noise is equivalent to a multiplicative channel in the time domain, it is mainly reflected in the common phase error (Common phase error, CPE) on the Orthogonal Frequency Division Multiplexing (OFDM) symbol, which can be estimated by PT-RS. Since CPE is not frequency selective, in principle, only one PT-RS needs to be inserted into one OFDM symbol; however, since the received signal is usually noisy, a certain number of PT-RS subcarriers need to be inserted into one OFDM symbol, and th...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04L27/26H04L5/00
CPCH04L5/0048H04L27/2602H04L27/2613
Inventor 黄甦
Owner SPREADTRUM COMM (SHANGHAI) CO LTD