Communication method and terminal device

Patent metadata

Field	Value
Publication number	US-11297565-B2
Application number	US-202016875028-A
Country	US
Kind code	B2
Filing date	May 15, 2020
Priority date	Nov 16, 2017
Publication date	Apr 5, 2022
Grant date	Apr 5, 2022

Abstract

This application provides a communication method and a terminal device. The communication method may include determining, by user equipment (UE), a candidate resource set on a first carrier, where the first carrier is a carrier on which a resource is currently to be selected, and the first carrier is used to transmit first data. The method may also include selecting, by the UE, a resource on the first carrier from the candidate resource set based on a preset condition, where the preset condition is determined based on resources selected by the UE on other carriers and one or more of the following: a quantity of transmit chains of the UE, a transmit power of the UE, a quantity of resource blocks occupied by the UE, a frequency domain spacing between a plurality of carriers or a plurality of frequency domain resources occupied by the UE, a carrier switching time of the UE, and a half-duplex limitation to the UE, the other carriers indicate all carriers on which the UE has currently selected a resource, and the other carriers are used to transmit second data. The method may also include sending, by the UE, the first data on the resource selected on the first carrier.

First claim

What is claimed is:

1. A communication method, comprising:
determining, by user equipment (UE), a candidate resource set on a first carrier, wherein the first carrier is a carrier on which a resource is currently to be selected, and the first carrier is used to transmit first data;
selecting, by the UE, a resource on the first carrier from the candidate resource set based on a preset condition, wherein the preset condition is determined based on resources selected by the UE on other carriers and one or more of the following information of the UE: a quantity of transmit chains of the UE, a transmit power of the UE, a quantity of resource blocks occupied by the UE, a frequency domain spacing between a plurality of carriers or a plurality of frequency domain resources occupied by the UE, a carrier switching time of the UE, and a half-duplex limitation to the UE, wherein the other carriers indicate all carriers on which the UE has currently selected a resource, and the other carriers are used to transmit second data; and
sending, by the UE, the first data on the resource selected on the first carrier, wherein the preset condition comprises a first preset condition; and
the selecting, by the UE, the resource on the first carrier from the candidate resource set based on the preset condition comprises:
determining, by the UE, a first candidate resource subset from the candidate resource set, wherein the first candidate resource subset does not comprise a first candidate resource that meets the first preset condition; and
selecting, by the UE, the resource on the first carrier from the first candidate resource subset, wherein
that the first candidate resource meets the first preset condition indicates that there is an intersection between a time domain resource of the first candidate resource and a time domain resource of a first selected resource in the selected resources, and the first selected resource meets a condition determined based on one or more of the following information of the UE: the quantity of transmit chains of the UE, the transmit power of the UE, the quantity of resource blocks occupied by the UE, and the frequency domain spacing between the plurality of carriers or the plurality of frequency domain resources occupied by the UE,
that the first candidate resource meets the first preset condition indicates that there is no intersection between the time domain resource of the first candidate resource and a time domain resource of a second selected resource in the selected resources, and a time domain spacing between the first candidate resource and the second selected resource meets a condition determined based on the carrier switching time of the UE,
or a combination thereof; and
wherein the first preset condition comprises: there is an intersection between the time domain resource of the first candidate resource and the time domain resource of the first selected resource in the selected resources; and
a quantity of carriers corresponding to the first selected resource is greater than or equal to a first threshold; or
a sum of a quantity of carriers corresponding to the first selected resource and a quantity of carriers corresponding to a currently selected resource is greater than or equal to a second threshold; or
a quantity of frequency bands corresponding to the first selected resource is greater than or equal to a third threshold; or
a sum of a quantity of frequency bands corresponding to the first selected resource and a quantity of frequency bands corresponding to a currently selected resource is greater than or equal to a fourth threshold; or
an amount of to-be-sent data on the first selected resource is greater than or equal to a fifth threshold; or
a sum of an amount of to-be-sent data on the first selected resource and an amount of to-be-sent data on a currently selected resource is greater than or equal to a sixth threshold.

2. The communication method according to claim 1 , wherein the determining, by the UE, the first candidate resource subset from the candidate resource set, wherein the first candidate resource subset does not comprise the first candidate resource that meets the first preset condition comprises:
for each time domain resource in the candidate resource set, excluding, by the UE, all candidate resources on one time domain resource from the candidate resource set once the one time domain resource meets the first preset condition, to determine the first candidate resource subset, wherein
that the one time domain resource meets the first preset condition indicates that there is an intersection between the one time domain resource and the time domain resource of the first selected resource in the selected resources, and the first selected resource meets the condition determined based on one or more of the following information of the UE: the quantity of transmit chains of the UE, the transmit power of the UE, the quantity of resource blocks occupied by the UE, and the frequency domain spacing between the plurality of carriers or the plurality of frequency domain resources occupied by the UE,
that the one time domain resource meets the first preset condition indicates that there is no intersection between the one time domain resource and the time domain resource of the second selected resource in the selected resources, and the time domain spacing between the first candidate resource and the second selected resource meets the condition determined based on the carrier switching time of the UE,
or a combination thereof.

3. The communication method according to claim 1 , wherein the first preset condition comprises: there is an intersection between the time domain resource of the first candidate resource and the time domain resource of the first selected resource in the selected resources; and
a sum of a power of to-be-sent data on the first selected resource and a power of to-be-sent data on the first carrier is greater than or equal to a seventh threshold; or
an absolute value of a difference between a power of to-be-sent data on at least one carrier corresponding to the first selected resource and a power of to-be-sent data on the first carrier is greater than or equal to an eighth threshold.

4. The communication method according to claim 1 , wherein the first preset condition comprises: there is an intersection between the time domain resource of the first candidate resource and the time domain resource of the first selected resource in the selected resources; and
a sum of a quantity of resource blocks occupied by to-be-sent data on the first selected resource and a quantity of resource blocks occupied by to-be-sent data on the first carrier is greater than or equal to a ninth threshold.

5. The communication method according to claim 1 , wherein the first preset condition comprises: there is an intersection between the time domain resource of the first candidate resource and the time domain resource of the first selected resource in the selected resources; and
the first carrier and at least one carrier that corresponds to the first selected resource are non-adjacent carriers; or
a frequency domain spacing between the first carrier and at least one carrier that corresponds to the first selected resource is greater than or equal to a tenth threshold; or
the first carrier and at least one carrier that corresponds to the first selected resource are adjacent carriers, and a frequency domain spacing between the first candidate resource and a selected resource, on the at least one carrier, on the time domain resource of the first candidate resource is greater than or equal to an eleventh threshold, and/or the frequency domain spacing between the first candidate resource and the selected resource, on the at least one carrier, on the time domain resource of the first candid

Assignees

• Huawei Tech Co Ltd

Inventors

• Lu Zhenwei
• Shi Yi
• Liu Deping

Classifications

• H04W72/51

  based on terminal or device properties · CPC title

• H04W92/18

  between terminal devices · CPC title

• H04W72/02 Primary

  Selection of wireless resources by user or terminal · CPC title

• H04L5/16

  Half-duplex systems; Simplex/duplex switching; Transmission of break signals {non-automatically inverting the direction of transmission} · CPC title

• H04W36/12

  Reselecting a serving backbone network switching or routing node · CPC title