US-12621803-B2 - Information transmission method, resource selection method, and communication device

US12621803B2US 12621803 B2US12621803 B2US 12621803B2US-12621803-B2

Abstract

The application discloses an information transmission method, a resource selection method, an apparatus, and an electronic device, belongs to the field of communication technology. The information transmission method is applied to a first communication device and includes: sending second information to at least one second communication device according to at least one of first information and a first rule; where the first information and/or the first rule is used by the first communication device to determine a resource for sending the second information, and the second information is used by the second communication device to perform resource selection, or resource exclusion, or resource reservation, or resource scheduling. This application can improve reliability of sidelink transmission.

Inventors

Shixiao LIU
Zichao JI
Siqi Liu
Huan WANG
Shuyan PENG

Assignees

VIVO MOBILE COMMUNICATION CO., LTD.

Dates

Publication Date: 20260505
Application Date: 20230306
Priority Date: 20200928

Claims (18)

1 . An information transmission method, executed by a first communication device and comprising: sending second information to at least one second communication device according to at least one of first information or a first rule; wherein the first information and/or the first rule is used by the first communication device to determine a resource for sending the second information, and the second information is used by the second communication device to perform resource selection, or resource exclusion, or resource reservation, or resource scheduling; wherein before the sending second information to at least one second communication device, the method further comprises: determining, by the first communication device based on at least one of the following information, whether to send the second information to the second communication device: feedback information or response information; a received redundancy version RV number; geographical information of the first communication device and/or the second communication device; an RSRP value of the second communication device measured by the first communication device; a group to which the first communication device belongs; or a device identifier of the first communication device; wherein the first information comprises information comprised in a case that a third communication device is a starting point of feedback; the information comprised in a case that the third communication device is a starting point of feedback comprises at least one of the following: a communication device identifier of the third communication device; group identification information corresponding to a group to which the third communication device belongs; or a sending order rule for the second information.
2 . The information transmission method according to claim 1 , wherein the first information further comprises at least one of the following: communication device identification information of a first-information transmit end; communication device identification information of a first-information receive end; group identification information of a user group to which the first-information receive end belongs; in-group identification information of the first-information receive end in the user group to which the first-information receive end belongs; sequence information for sending second information by at least one first communication device; time information for sending the second information by the first communication device; information about the number of communication devices sending second information; or resource information used for transmitting the second information.
3 . The information transmission method according to claim 2 , wherein the time information for sending the second information by the at least one first communication device comprises at least one of the following: information about a time interval for sending second information by at least one first communication device; information about a delay requirement for sending the second information by the at least one first communication device; information about a time interval between any two transmissions of second information by a same first communication device; information about a time interval between two consecutive transmissions of the second information by the same first communication device; information about a delay requirement for two consecutive transmissions of the second information by the same first communication device; or information about a delay requirement for any two transmissions of the second information by the same first communication device.
4 . The information transmission method according to claim 2 , wherein the resource information used for transmitting the second information comprises at least one of the following: position information of a time-domain resource for sending second information by at least one first communication device, or delay information for sending the second information by the at least one first communication device; or position information of a frequency-domain resource for sending the second information by the at least one first communication device.
5 . The information transmission method according to claim 4 , wherein the position information of the frequency-domain resource for sending the second information by the at least one first communication device comprises at least one of the following: granularity of a frequency-domain resource occupied by at least one piece of second information; sorting information of the frequency-domain resource occupied for sending the second information by the at least one first communication device; or position information of the frequency-domain resource occupied for sending the second information by the at least one first communication device.
6 . The information transmission method according to claim 1 , wherein the first information is carried by at least one of the following: sidelink control information (SCI); PC5-radio resource control (RRC) message; RRC message; media access control control element (MAC CE); downlink control information (DCI); or sidelink feedback control information (SFCI).
7 . The information transmission method according to claim 1 , wherein a transmission resource of the first information uses at least one of the following: physical sidelink shared channel (PSSCH); physical sidelink control channel (PSCCH); physical sidelink feedback channel (PSFCH); a resource in a dedicated resource pool; a resource at a first position; or a sidelink channel or signal.
8 . The information transmission method according to claim 1 , wherein the first rule comprises at least one of the following: determining, based on a distance from the second communication device, a time-domain resource and/or a frequency-domain resource for sending the second information; determining, based on a measured RSRP value for the second communication device, a time-domain resource and/or a frequency-domain resource for sending the second information; determining, based on a delay requirement for sending the second information by the first communication device, a time-domain resource for sending the second information; determining, based on third information predefined in a protocol, a time-domain resource and/or a frequency-domain resource for sending the second information; or determining, according to a second rule, a time-domain resource and/or a frequency-domain resource for sending the second information.
9 . The information transmission method according to claim 8 , wherein the determining, based on a distance from the second communication device, a time-domain resource and/or a frequency-domain resource for sending the second information comprises: determining, based on at least one of the distance from the second communication device, a first distance reference point, a first time reference point, or a first time step, the time-domain resource and/or a frequency-domain resource for sending the second information; or, wherein the determining, based on a measured RSRP value for the second communication device, a time-domain resource and/or a frequency-domain resource for sending the second information comprises: determining, based on at least one of the measured RSRP value for the second communication device, a first power reference point, a first time reference point, or a first time step, the time-domain resource and/or a frequency-domain resource for sending the second information; or, wherein the third information comprises at least one of the following: a communication device identifier corresponding to a first communication device that initially transmits second information or identification information of a group to which the first communication device belongs; a time reference point for sending second information; a time interval for sending second information by at least two first communication devices; a chronological order rule for sending second information by at least one first communication device; a frequency-domain resource occupied for sending second information by one first communication device; a spacing between frequency-domain resources for sending second information by at least two first communication devices; or a mapping rule or sorting rule in frequency domain for sending second information by at least one first communication device; or, wherein the second rule comprises at least one of the following: performing mapping based on a communication device identifier of the first communication device or group identification information of a group to which the first communication device belongs, and determining a time-domain resource for sending the second information; performing mapping based on the communication device identifier of the first communication device or the group identification information of the group to which the first communication device belongs, and determining a frequency-domain resource for sending the second information; performing mapping based on a start or end position of a PSFCH feedback frequency-domain resource of the first communication device, and determining a frequency-domain resource for sending the second information; performing mapping based on a start or end frequency-domain position of a PSCCH of the second communication device, and determining a frequency-domain resource for sending the second information; performing mapping based on a start or end frequency-domain position of a PSSCH of the second communication device, and determining a frequency-domain resource for sending the second information; performing mapping based on a distance between the first communication device and the second communication device, and determining a frequency-domain resource for sending the second information; performing mapping based on an RSRP value of the second communication device measured by the first communication device, and determining a frequency-domain resource for sending the second information; or performing mapping based on an identifier of a zone in which the first communication device is located, and determining a frequency-domain resource for sending the second information.
10 . A resource selection method, executed by a second communication device and comprising: receiving second information from a first communication device; wherein the second information is used by the second communication device to perform resource selection, or resource exclusion, or resource reservation, or resource scheduling; wherein the second information is determined by the first communication device whether to send to the second communication device based on at least one of the following information: feedback information or response information; a received redundancy version RV number; geographical information of the first communication device and/or the second communication device; an RSRP value of the second communication device measured by the first communication device; a group to which the first communication device belongs; or a device identifier of the first communication device; wherein a resource for sending the second information is determined based on first information and/or a first rule; the first information comprises information comprised in a case that a third communication device is a starting point of feedback; the information comprised in a case that the third communication device is a starting point of feedback comprises at least one of the following: a communication device identifier of the third communication device; group identification information corresponding to a group to which the third communication device belongs; or a sending order rule for the second information.
11 . The resource selection method according to claim 10 , wherein that the second communication device performs resource selection, or resource exclusion, or resource reservation, or resource scheduling based on the second information comprises at least one of the following: selecting all resources of a first resource set for resource reservation, or resource exclusion, or resource scheduling, or resource selection; or randomly selecting N1 resources of the first resource set for resource reservation, or resource exclusion, or resource scheduling, or resource selection; wherein N1 is a positive integer.
12 . The resource selection method according to claim 11 , wherein a manner of determining the first resource set comprises at least one of the following: determining based on a union of resources indicated by fourth information; determining based on an intersection of the resources indicated by the fourth information; determining based on most frequently occurring resources in the resources indicated by the fourth information; determining based on top N2 most frequently occurring resources in the resources indicated by the fourth information, wherein N2 is a positive integer; or determining based on top N3% most frequently occurring resources in the resources indicated by the fourth information, wherein N3 is a positive integer.
13 . The resource selection method according to claim 12 , wherein the fourth information comprises at least one of the following: all second information received by the second communication device; or part of second information received by the second communication device.
14 . An electronic device, comprising a processor, a memory, and a program or instructions stored in the memory and capable of running on the processor, wherein when the program or the instructions are executed by the processor, the steps of the method according to claim 1 are implemented.
15 . A second communication device, comprising a processor, a memory, and a program or instructions stored in the memory and capable of running on the processor, wherein when the program or the instructions are executed by the processor, the steps of a resource selection method are implemented, wherein the steps of the resource selection method comprises: receiving second information from a first communication device; wherein the second information is used by the second communication device to perform resource selection, or resource exclusion, or resource reservation, or resource scheduling; wherein the second information is determined by the first communication device whether to send to the second communication device based on at least one of the following information: feedback information or response information; a received redundancy version RV number; geographical information of the first communication device and/or the second communication device; an RSRP value of the second communication device measured by the first communication device; a group to which the first communication device belongs; or a device identifier of the first communication device; wherein a resource for sending the second information is determined based on first information and/or a first rule; the first information comprises information comprised in a case that a third communication device is a starting point of feedback; the information comprised in a case that the third communication device is a starting point of feedback comprises at least one of the following: a communication device identifier of the third communication device; group identification information corresponding to a group to which the third communication device belongs; or a sending order rule for the second information.
16 . The second communication device according to claim 15 , wherein that the second communication device performs resource selection, or resource exclusion, or resource reservation, or resource scheduling based on the second information comprises at least one of the following: selecting all resources of a first resource set for resource reservation, or resource exclusion, or resource scheduling, or resource selection; or randomly selecting N1 resources of the first resource set for resource reservation, or resource exclusion, or resource scheduling, or resource selection; wherein N1 is a positive integer.
17 . The second communication device according to claim 16 , wherein a manner of determining the first resource set comprises at least one of the following: determining based on a union of resources indicated by fourth information; determining based on an intersection of the resources indicated by the fourth information; determining based on most frequently occurring resources in the resources indicated by the fourth information; determining based on top N2 most frequently occurring resources in the resources indicated by the fourth information, wherein N2 is a positive integer; or determining based on top N3% most frequently occurring resources in the resources indicated by the fourth information, wherein N3 is a positive integer.
18 . The second communication device according to claim 17 , wherein the fourth information comprises at least one of the following: all second information received by the second communication device; or part of second information received by the second communication device.

Description

CROSS-REFERENCE TO RELATED APPLICATIONS This application is a continuation application of International Application No. PCT/CN2021/120660 filed on Sep. 26, 2021, which claims priority to Chinese Patent Application No. 202011045724.X, filed in China on Sep. 28, 2020, which are incorporated herein by reference in their entireties. TECHNICAL FIELD This application relates to the field of communication technologies, and in particular, to an information transmission method, a resource selection method, an apparatus, and an electronic device. BACKGROUND As restricted by an existing resource allocation method, reliability and power utilization of sidelink are relatively low. In order to improve transmission reliability and power utilization, a first communication device (such as a data receive end) may send some assistance information to a second communication device (such as a data transmit end or a control node) to ensure transmission reliability. However, in a groupcast scenario, if all first communication devices in a group send assistance information to the second communication device, huge signaling overheads are resulted, which in turn reduces reliability of data transmission. In addition, if a plurality of first communication devices send assistance information to the second communication device, how the second communication device selects resources based on such assistance information is also a selection problem, and this selection method needs to be clarified. SUMMARY According to a first aspect, an embodiment of this application provides an information transmission method, executed by a first communication device. The method includes: sending second information to at least one second communication device according to at least one of first information or a first rule; wherethe first information and/or the first rule is used by the first communication device to determine a resource for sending the second information, and the second information is used by the second communication device to perform resource selection, or resource exclusion, or resource reservation, or resource scheduling. According to a second aspect, an embodiment of this application provides a resource selection method, executed by a second communication device. The method includes: receiving second information from a first communication device; wherethe second information is used by the second communication device to perform resource selection, or resource exclusion, or resource reservation, or resource scheduling. According to a third aspect, an embodiment of this application provides an information transmission apparatus, executed by a first communication device and including: a sending module, configured to send second information to at least one second communication device according to at least one of first information or a first rule; wherethe first information and/or the first rule is used by the first communication device to determine a resource for sending the second information, and the second information is used by the second communication device to perform resource selection, or resource exclusion, or resource reservation, or resource scheduling. According to a fourth aspect, an embodiment of this application provides a resource selection apparatus, executed by a second communication device. The apparatus includes: a receiving module, configured to receive second information from a first communication device; wherethe second information is used by the second communication device to perform resource selection, or resource exclusion, or resource reservation, or resource scheduling. According to a fifth aspect, an embodiment of this application further provides an electronic device, including a processor, a memory, and a program or instructions stored in the memory and capable of running on the processor, and when the program or the instructions are executed by the processor, the steps of the method described above are implemented. According to a sixth aspect, an embodiment of this application provides a readable storage medium, where a program or instructions are stored in the readable storage medium, and when the program or the instructions are executed by a processor, the steps of the method described above are implemented. According to a seventh aspect, an embodiment of this application provides a chip, where the chip includes a processor and a communications interface, the communications interface is coupled to the processor, and the processor is configured to run a program or instructions to implement the method according to the first aspect and the second aspect. BRIEF DESCRIPTION OF DRAWINGS To describe the technical solutions in the embodiments of this application more clearly, the following briefly describes the accompanying drawings required for describing the embodiments of this application. Apparently, the accompanying drawings in the following description show merely some embodiments of this application, and persons