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Power control method and 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: 2020-06-05
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 and device, terminal and readable storage medium
  • Power control method and device, terminal and readable storage medium
  • Power control method and 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 transmission 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 reads the control information to learn that UE1 uses CQI level 7 for data transmission, so when the BLER is 10%, the threshold SINR value corresponding to this CQI level is about 5dB.

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

[0128] The RSRP1 of the signal link 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]...

Embodiment 2

[0135] In this implementation, all UEs communicate with a maximum transmission 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 receiving data received by UE2 at the receiving end 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 with 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 smaller than pathloss1 and pathloss3 is larger than pathloss...

Embodiment 3

[0146] In this implementation, all UEs communicate with a maximum transmission 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 receiving end SINR=20dB to the originating UE1.

[0148] 2. According to the CQI level used by the UE1 for sending data, the transmitting UE1 determines that when the BLER is 10%, the threshold SINR value corresponding to the CQI level is about 5 dB.

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

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Abstract

The embodiment of the invention discloses a power control method and device, a terminal and a readable storage medium, wherein the power control method comprises the following steps: in sidelink communication, a second terminal receives power control request information from a first terminal, and the first terminal is an information receiving terminal in the sidelink communication; the second terminal determines the transmitting power of the second terminal based on the first information; wherein the first information is obtained by the second terminal from the outside or measured by the second terminal. According to the embodiment of the invention, the power control of the target terminal in the sidelink communication can be realized.

Description

technical field [0001] The present invention relates to the communication field, in particular to a power control method, device, terminal and readable storage medium. Background technique [0002] Generally, sidelink (Sidelink) refers to the technology used to realize direct communication between multiple terminals (User Equipment, UE) without going through the network; vehicle networking (Vehicle to everything, V2X) technology is an important A key wireless communication and information processing technology. [0003] At present, Sidelink's open-loop power control method roughly uses the path loss between the terminal and the base station to realize centralized control of the terminal's transmit power in the Sidelink network. In Sidelink communication, for a transmitting UE with multiple receiving UEs, There is only one power control process in the originating UE. This working method is unreasonable. The reason is that in the original Long-Term Evolution LTE V2X, there a...

Claims

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Application Information

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Patent Type & Authority Applications(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