CN115399026A

CN115399026A - A communication method and a communication device

Info

Publication number: CN115399026A
Application number: CN202080099811.5A
Authority: CN
Inventors: 陈二凯; 苏宏家; 郭文婷; 卢磊
Original assignee: Huawei Technologies Co Ltd
Current assignee: Huawei Technologies Co Ltd
Priority date: 2020-04-20
Filing date: 2020-04-20
Publication date: 2022-11-25
Also published as: WO2021212261A1

Abstract

The embodiment of the application provides a communication method and a communication device, wherein: the terminal equipment determines that the duration of current resource interception is less than the length of a resource interception window; determining a second parameter from the first parameter, the second parameter comprising at least one of: a reference signal received power, RSRP, threshold for resource exclusion, a length of a resource selection window, or a transmit power of a data channel; and the terminal equipment selects the sending resources according to the second parameter, and/or the terminal equipment sends the data to be sent of the terminal equipment according to the second parameter. The probability of selecting the same sending resource with other terminal equipment can be reduced, namely, the resource selection collision is reduced, and the transmission reliability and the system resource utilization rate are improved. The method provided by the embodiment can be applied to communication systems, such as V2X, LTE-V, V V, internet of vehicles, MTC, ioT, LTE-M, M2M, internet of things and the like.

Description

PCT国内申请，说明书已公开。PCT domestic application, specification has been published.

Claims

A method of communication, comprising:

the terminal equipment determines that the resource interception duration is less than a resource interception window;

the terminal equipment determines a second parameter according to the first parameter, wherein the second parameter comprises at least one of the following parameters: a reference signal received power, RSRP, threshold for resource exclusion, a length of a resource selection window, or a transmit power of a data channel;

and the terminal equipment selects a sending resource according to the second parameter, and/or the terminal equipment sends data to be sent of the terminal equipment according to the second parameter.
The method of claim 1,

the first parameter is determined by the terminal device according to the actual interception time length in the current resource interception window and the ratio between the lengths of the resource interception windows,

or, the first parameter is a parameter configured through a higher layer signaling,

or, the first parameter is a preconfigured parameter.
The method according to claim 2, wherein the determining of the first parameter by the terminal device according to the ratio of the actual listening time length in the current resource listening window, the starting time of the resource listening window, and the ending time of the resource listening window comprises:

the first parameter satisfies:

alpha＝D ₀ /D _s ＝D ₀ /(T _proc,0 -T ₀ )；

wherein, the alpha is the first parameter, D ₀ For the actual listening time duration, D _s Listening for the length of the resource window, T ₀ Listening for a start time of the window for the resource, the T _proc,0 And monitoring the end time of the window for the resource.
The method according to any of claims 1-3, wherein the second parameter comprises the RSRP threshold for resource exclusion,

the terminal equipment determines the second parameter according to the first parameter, and the method comprises the following steps:

determining the RSRP threshold for resource exclusion when the first parameter is located in a first interval, wherein the first interval comprises one or more intervals.
The method of claim 4, wherein the determining the RSRP threshold for resource exclusion comprises:

the RSRP threshold for resource exclusion satisfies:

R1＝R0+k，alpha∈[x，y]；

wherein, the R1 is the RSRP threshold for resource exclusion, the R0 is the preset RSRP threshold for resource exclusion, the alpha is the first parameter, the [ x, y ] is the first interval, the k is a real number, the x is a real number, and the y is a real number.
The method according to any of claims 1-2, wherein the second parameter comprises a length of the resource selection window, and wherein the terminal device determines the second parameter according to the first parameter, comprising:

the terminal device determines the time domain length of the resource selection window according to the first parameter, and/or,

and the terminal equipment determines the total number of the candidate resources in the resource selection window according to the first parameter.
The method of any of claims 1-2, wherein the second parameter comprises a transmit power of the data channel, and wherein the terminal device determines the second parameter based on the first parameter, comprising:

and the terminal equipment determines the transmitting power of the data channel according to the first parameter and the preset transmitting power of the data channel.
The method as claimed in claim 7, wherein the determining, by the terminal device, the transmission power of the data channel according to the first parameter and the preset transmission power of the data channel comprises:

the transmitting power of the data channel satisfies the following conditions:

P′ _TX ＝h(alpha)×P _TX ；

wherein, the P' _TX For the transmission power of the data channel, the P _TX Is the preset transmitting power of the data channel, the alpha is the first parameter, and the h (alpha) is a monotone increasing function related to the first parameter.
The method according to any one of claims 4 to 8,

the preset RSRP threshold for resource exclusion is configured by higher layer signaling,

or, the preset RSRP threshold for resource exclusion is a preconfigured parameter.
The method according to any one of claims 7 to 9,

the preset transmission power of the data channel is configured through higher layer signaling,

or, the preset transmitting power of the data channel is a pre-configured parameter.
The method according to any of claims 1 to 10, characterized in that the data channel is a physical side uplink shared channel PSSCH and/or a physical side uplink control channel PSCCH.
A method of communication, comprising:

when the resource interception duration of the terminal equipment is less than a first threshold, the terminal equipment determines a second parameter according to the first parameter, wherein the second parameter comprises at least one of the following parameters: a reference signal received power, RSRP, threshold for resource exclusion, a length of a resource selection window, or a transmit power of a data channel;

and the terminal equipment selects a sending resource according to the second parameter, and/or the terminal equipment sends data to be sent of the terminal equipment according to the second parameter.
A method according to claim 12, characterized in that the method comprises a method according to any of claims 2-11.
A communications apparatus, comprising:

the processing module is used for determining that the duration of resource interception is less than a resource interception window;

the processing module is further configured to determine a second parameter according to the first parameter, where the second parameter includes at least one of: a reference signal received power, RSRP, threshold for resource exclusion, a length of a resource selection window, or a transmit power of a data channel;

and the sending module is used for selecting sending resources according to the second parameter and/or sending data to be sent of the terminal equipment according to the second parameter.
The communication device of claim 14,

the first parameter is determined by the terminal device according to the actual listening time length in the current resource listening window and the ratio between the lengths of the resource listening windows, or the first parameter is a parameter configured through a high-level signaling, or the first parameter is a preconfigured parameter.
The communication device of claim 15,

the first parameter satisfies:

alpha＝D ₀ /D _s ＝D ₀ /(T _proc,0 -T ₀ )；

wherein, the alpha is the first parameter, D ₀ For the actual listening time length, D _s Listening for the length of the resource window, T ₀ Detecting for said resourceStart time of listening window, said T _proc,0 And monitoring the end time of the window for the resource.
The communications device according to any of claims 14 to 16, wherein the processing module is configured to determine the RSRP threshold for resource exclusion when the first parameter is in a first interval, the first interval comprising one or more intervals.
The communication device of claim 17,

the RSRP threshold for resource exclusion satisfies:

R1＝R0+k，alpha∈[x，y]；

wherein, the R1 is the RSRP threshold for resource exclusion, the R0 is the preset RSRP threshold for resource exclusion, the alpha is the first parameter, the [ x, y ] is the first interval, the k is a real number, the x is a real number, and the y is a real number.
The communication device according to any one of claims 14 to 15,

the processing module is specifically configured to determine a time domain length of the resource selection window according to the first parameter, and/or determine a total number of candidate resources in the resource selection window according to the first parameter.
The communication device according to any one of claims 14 to 15,

the processing module is specifically configured to determine the transmit power of the data channel according to the first parameter and a preset transmit power of the data channel.
The communication device of claim 20,

the transmission power of the data channel satisfies:

P′ _TX ＝h(alpha)×P _TX ；

wherein, the P' _TX For the transmission power of the data channel, the P _TX For the preset transmit power of the data channel, the alpha is the first parameter, and the h (alpha) is a monotonically increasing function with respect to the first parameter.
The communication apparatus according to any of claims 17 to 21, wherein the preset RSRP threshold for resource exclusion is configured by higher layer signaling or is a pre-configured parameter.
The communication device according to any of claims 20 to 22,

the preset transmitting power of the data channel is configured through a high-level signaling, or the preset transmitting power of the data channel is a preconfigured parameter.
A communication apparatus according to any of claims 14 to 23, wherein the data channel is a physical side uplink shared channel PSCCH and/or a physical side uplink control channel PSCCH.
A communications apparatus, comprising:

a processing module, configured to determine a second parameter according to the first parameter when a duration of resource interception in the terminal device is less than a first threshold, where the second parameter includes at least one of the following: a reference signal received power, RSRP, threshold for resource exclusion, a length of a resource selection window, or a transmit power of a data channel;

and the sending module is used for selecting sending resources according to the second parameter and/or sending data to be sent of the terminal equipment according to the second parameter.
A communication apparatus according to claim 25, characterized in that the communication apparatus comprises a communication apparatus according to any of claims 15 to 24.
A communications apparatus, comprising: a processor coupled with a memory;

a memory for storing a computer program;

a processor for executing a computer program stored in the memory to cause the apparatus to perform the method of any of claims 1 to 11, or 12 to 13.
A readable storage medium comprising a program or instructions which, when run on a computer, performs the method of any of claims 1 to 11, or 12 to 13.