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Power control method, device, terminal and readable storage medium

A power control and power control target technology, applied in the field of communication, can solve problems such as poor terminal power control effects, and achieve the effects of improving overall performance, reducing power waste, and reducing interference

Active Publication Date: 2022-06-28
VIVO MOBILE COMM CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] Embodiments of the present invention provide a power control method, device, terminal, and readable storage medium, so as to solve the current problem of poor terminal power control in sidelink communication

Method used

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  • Power control method, device, terminal and readable storage medium
  • Power control method, device, terminal and readable storage medium
  • Power control method, device, terminal and readable storage medium

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0125] In this implementation, all UEs communicate with a maximum transmit power of 23dBm in the initial stage. Within a certain transmission time interval TTI, UE1 communicates with UE2, UE3 communicates with UE4, and UE5 communicates with UE6 (the former is TX and the latter is RX).

[0126] 1. UE2 measures that the SINR at the receiving end is 1dB, and UE2 de-controls the information to know that UE1 uses CQI level 7 for data transmission, so that when the BLER is 10%, the threshold SINR value corresponding to the CQI level is about 5dB.

[0127] 2. UE2 compares the receiving end SINR with the threshold SINR, because the receiving end SINR is less than the threshold SINR, further for UE2, compares the interference link RSRP and the signal link RSRP, for example:

[0128] The RSRP1 of the signal chain is -90dBm,

[0129] The RSRP2 of the interference link corresponding to UE3 is -85dBm,

[0130] The RSRP3 of the interference link corresponding to UE5 is -92dBm.

[0131] C...

Embodiment 2

[0135] In this implementation, all UEs communicate with a maximum transmit power of 23dBm in the initial stage. Within a certain TTI, UE1 communicates with UE2, UE3 communicates with UE4, and UE5 communicates with UE6 (the former is TX and the latter is RX).

[0136] 1. The BLER of the data received by the receiving end UE2 is 15%, and the threshold BLER is 10%.

[0137] 2. UE2 compares the receiving end BLER with the threshold BLER, because the receiving end BLER is greater than the threshold BLER. Further, for UE2, compare the pathloss of the interference link and the pathloss of the signal link, for example:

[0138] The pathloss1 of the signal link is 90dB,

[0139] The pathloss2 of the interference link corresponding to UE3 is 80dB,

[0140] The pathloss3 of the interference link corresponding to UE5 is 110dB.

[0141] Compare pathloss1, pathloss2 and pathloss3.

[0142] Because pathloss2 is less than pathloss1 and pathloss3 is greater than pathloss1, it is determine...

Embodiment 3

[0146] In this implementation, all UEs communicate with a maximum transmit power of 23dBm in the initial stage. Within a certain TTI, UE1 communicates with UE2, UE3 communicates with UE4, and UE5 communicates with UE6 (the former is TX and the latter is RX).

[0147] 1. UE2 reports its own receiving end SINR=20dB to the transmitting end UE1.

[0148] 2. According to the CQI level used by the originating UE1 to transmit data, when the BLER is 10%, the threshold SINR value corresponding to the CQI level is about 5dB.

[0149]3. The transmitting end UE1 compares the receiving end SINR and the threshold SINR reported by the UE2. Since the receiving end SINR is greater than the threshold SINR, the UE1 reduces its own transmit power by 23dBm-2dB=21dBm.

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Abstract

The embodiment of the present invention discloses a power control method, device, terminal and readable storage medium. The power control method includes: in the side link communication, the second terminal receives the power control request information from the first terminal, The first terminal is an information receiving terminal in the side link communication; the second terminal determines the transmit power of the second terminal based on the first information; wherein, the first information is provided by the second terminal Obtained from the outside or measured by the second terminal. The embodiment of the present invention can realize the power control of the target terminal in the side link communication.

Description

technical field [0001] The present invention relates to the field of communications, and in particular, to a power control method, device, terminal and readable storage medium. Background technique [0002] Generally, sidelink (Sidelink) refers to a technology used to realize direct communication between multiple terminals (User Equipment, UE) without going through a network; Vehicle to everything (V2X) technology is an intelligent transportation system. A key wireless communication and information processing technology. [0003] At present, the open-loop power control method of Sidelink is roughly to use the path loss between the terminal and the base station to realize the centralized control of the transmit power of the terminal in the Sidelink network. There is only one power control process for the originating UE. This working method is unreasonable because: in the original long-term evolution LTE V2X, there is only broadcast service, and the path loss between the UE ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04W52/18H04W52/22H04W52/24H04W52/10
CPCH04W52/241H04W52/228H04W52/18H04W52/10H04W52/24H04W52/22
Inventor 姜炜纪子超彭淑燕刘是枭
Owner VIVO MOBILE COMM CO LTD