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Power control method and device

A technology of power control and terminal equipment, applied in the field of communication, can solve the problems of single power control mode and inability to adapt to diversified application scenarios, and achieve the effect of various power control modes and wide adaptability

Active Publication Date: 2021-08-24
VIVO MOBILE COMM CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The purpose of the embodiments of the present invention is to provide a power control method and device to solve the problem in the prior art that the power control method is single and cannot adapt to diverse application scenarios

Method used

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Examples

Experimental program
Comparison scheme
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Embodiment 1

[0100] Taking a frame structure with a subcarrier interval of 15KHz as an example, the time-domain resource pattern time-domain resource granularity is a time-slot slot, and the time-domain resource pattern includes two different types of time-domain resources. An example of the format of the time domain resource pattern is as follows:

[0101] Pattern1, such as figure 2 As shown, the first N slots are a time domain resource R1, the last X-N slots are another time domain resource R2, X is the number of slots in a radio frame (such as SSSSSUUUUU, S can be used to indicate that it is determined according to the sidelink path loss Time domain resource of transmit power, U can be used to represent the time domain resource of transmit power determined according to downlink path loss).

[0102] Pattern2: as image 3 As shown, an odd-numbered slot is a time-domain resource R1, and an even-numbered slot is another time-domain resource R2. (eg SUSUSUSUSU). Of course, even-numbered...

Embodiment 2

[0106] The base station configures the time domain resource pattern for the terminal device based on the auxiliary information reported by the terminal equipment (UE). The format of the configured time domain resource pattern is as follows: Figure 5 As shown, the auxiliary information refers to the descriptions in the foregoing embodiments.

[0107] In this embodiment, it is assumed that UE1 is very close to the base station, and the downlink path loss (pathloss) between the measurement and the base station is small, which is 60dB; UE2 is far away from the base station, and the pathloss between the measurement and the base station is large, which is 120dB. ; UE3 is far from the base station, and the pathloss between the measurement and the base station is very large, which is 110dB.

[0108] At a certain moment, UE1 has a sidelink broadcast service, UE2 has an uplink uplink service, and UE3 has a sidelink unicast service, and the receiving UE is very close to the originating ...

Embodiment 3

[0116] Taking a frame structure with a subcarrier interval of 15KHz as an example, the time-domain resource pattern time-domain resource granularity is a time-slot slot, and the time-domain resource pattern includes two different types of time-domain resources. An example of the format of the time domain resource pattern is figure 2 As shown, the time domain resource pattern is agreed by the protocol.

[0117] In this embodiment, the UE first determines the time domain resource pattern in a manner predefined by the protocol.

[0118] UE1 has periodic broadcast services with high QoS requirements, and chooses to use the maximum transmit power of 23dBm for data transmission on UE1 to ensure the quality of reception.

[0119] UE2 has periodic unicast services with high QoS requirements, and chooses to perform open-loop power control on resource R1 based on the following formula to determine the transmit power:

[0120]

[0121] In the above formula, P CMAX is the maximum t...

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Abstract

The embodiment of the present invention discloses a power control method and device, which are used to solve the problem in the prior art that the power control mode is single and cannot adapt to diversified application scenarios. The foregoing method is performed by a terminal device, and includes: determining a target time domain resource from at least two types of time domain resources, wherein the at least two types of time domain resources include a first time domain resource and a second time domain resource, and the first time domain resource The resource and the second time domain resource correspond to different power control modes; and the transmission power is controlled according to the power control mode corresponding to the target time domain resource. The embodiments of the present invention define different power control modes through different types / kinds of time domain resources. The power control modes are diverse and flexible, and can be widely adapted to various application scenarios.

Description

technical field [0001] Embodiments of the present invention relate to the field of communications, and in particular, to a power control method and device. Background technique [0002] A sidelink refers to a link that communicates directly between terminal devices without going through a network device. Long Term Evolution (Long Term Evolution, LTE) sidelink communicates based on broadcast, although it can be used for basic safety communication of vehicle to everything (V2X), but it is not suitable for more advanced V2X services. The New Radio (NR) system will support more advanced sidelink transmission designs, such as unicast, multicast or multicast, so as to support more comprehensive service types. For terminal equipment, data transmission can be performed between terminal equipment through unicast, multicast or broadcast; at the same time, data transmission between terminal equipment and network equipment is performed through uplink / downlink. In the related art, the a...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04W52/18H04W72/04
CPCH04W52/18H04W72/0446
Inventor 姜炜纪子超彭淑燕刘思綦刘是枭
Owner VIVO MOBILE COMM CO LTD
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