WO2022077516A1

WO2022077516A1 - Resource determination method and related apparatus

Info

Publication number: WO2022077516A1
Application number: PCT/CN2020/121700
Authority: WO
Inventors: 黎超; 米翔; 杨帆
Original assignee: 华为技术有限公司
Priority date: 2020-10-16
Filing date: 2020-10-16
Publication date: 2022-04-21

Abstract

Disclosed in embodiments of the present application are a resource determination method and a related apparatus. In the method, a first device determines a first resource set from a candidate resource set according to resource occupancy information obtained from monitoring results of at least two groups of sensing windows, so as to determine a transmission resource from the first resource set. In the embodiments of the present application, at least two groups of sensing windows are included, i.e., monitoring positions and opportunities for resource monitoring are added, so that the reliability of transmission resource determination can be improved, thereby facilitating reduction of the number of data retransmissions of the first device in an NR system, and thus improving the reliability of the system.

Description

A resource determination method and related device

technical field

The present application relates to the field of communication technologies, and in particular, to a resource determination method and related apparatus.

Background technique

Currently, vehicles can communicate through vehicle-to-vehicle (V2V), vehicle-to-infrastructure (V2I), vehicle-to-pedestrian (V2P), or vehicle-to-network (V2P) communications. To network, V2N) and other communication methods to obtain road condition information or receive information services in time, these communication methods can be collectively referred to as vehicle to everything (V2X) communication.

In the Internet of Vehicles, it is necessary to support a communication method in which terminal devices without the control of base stations independently select resources. In the current design of LTE-V R14 and NR-V R16, there are resource selection methods based on full perception. The fully aware resource selection method means that the terminal device monitors resources on continuous resources, and selects the resources used when sending data according to the results of these monitoring. The location of resources, predict which resources and locations are relatively clean or unoccupied when data is to be sent, so as to select the best transmission resources. For the fully aware resource selection method, the power consumption is relatively high because the terminal device needs to monitor continuously at all times. Therefore, when the above-mentioned fully-aware resource selection method is used in a design that is sensitive to power consumption, a power reduction scheme during resource selection needs to be considered. For example, the partial sensing technology that detects on partial time-frequency resources in LTE-VR14. However, when using the partial sensing technology to determine the transmission resources, only part of the time domain resources are detected, and messages sent by other users will be missed. Therefore, when facing a New Radio (New Radio, NR) service with higher reliability transmission requirements, the existing technology will reduce the reliability of the system, thereby leading to an increase in the number of transmissions and a decrease in the system efficiency.

SUMMARY OF THE INVENTION

The present application provides a resource determination method and a related device, which can reduce the number of data retransmissions in an NR system, thereby improving the reliability of the system.

In a first aspect, the present application provides a resource determination method. In this method, the first device obtains resource occupation information in the candidate resource set according to the monitoring results of the M groups of perception windows, where the M groups of perception windows include the first group of perception windows and at least one second group of perception windows, and then the first device according to the resource Occupancy information, determine the first resource set from the candidate resource set, and finally determine the transmission resource from the first resource set. The resources occupied by the first set of sensing windows and the second set of sensing windows are different, wherein M is a positive integer not less than 2, and the first resource set is the resources excluding the occupied resources in the candidate resource set.

Compared with the current partial sensing resource selection method, the embodiment of the present application includes at least two sets of sensing windows, that is, the monitoring positions and opportunities for resource monitoring are increased, and the reliability of transmission resource determination can be improved, thereby helping to reduce The number of times that the first device retransmits data in the NR system, thereby improving the reliability of the system.

In addition, the embodiment of the present application is beneficial for the first device not only to determine transmission resources according to the monitoring results of the first group of perception windows, but also to determine transmission resources according to the monitoring results of the second group of perception windows, so that it is beneficial for the first device to determine transmission resources according to the monitoring results of the first group of perception windows When the transmission resource determined by the monitoring result of the window is not suitable or the transmission of the data fails to receive, avoid the time delay of resource determination caused by the first device only re-determining the transmission resource according to the monitoring result of the first group of sensing windows at intervals of P _step . big problem.

In an implementation manner, the first group of sensing windows includes Ka candidate sensing sub-windows, and the candidate sensing sub-windows include at least Ya0 time slots, or the candidate sensing sub-windows include at most Ya1 time slots; where Ka is a positive integer, and Ya0 and Ya1 are positive integers. That is to say, the first group of perception windows consists of at least one candidate perception sub-window, and each candidate perception sub-window consists of at least one time slot.

In an implementation manner, Ya0 and/or Ya1 are configured by signaling, or preconfigured, or predefined. It can be seen that the values of Ya0 and/or Ya1 can be configured in various ways.

In an implementation manner, the union of the Ka candidate perception sub-windows is a subset of the perception window; or, the Ka candidate perception sub-windows are a discontinuous group of Ka time slots in the time domain. That is to say, the Ka candidate perception sub-windows only occupy part of the time domain positions within the perception window in the time domain.

In an implementation manner, the Ka candidate sensing sub-windows include a set of time slots distributed at a first interval P _step1 in the time domain of the Ka group.

In an implementation manner, the value of P _step1 is one-Nth of the size of the sensing sub-window, where N is a positive integer greater than 1; or, P _step1 is configured by signaling.

In an implementation manner, the first device also obtains first indication information, and the first indication information indicates the sensing sub-windows used for monitoring in the Ka candidate sensing sub-windows, that is, the first device can determine the detection sub-windows in the Ka candidate sensing sub-windows through the first indication information. In which candidate sensing sub-windows of the candidate sensing sub-windows are to perform resource monitoring.

In an implementation manner, the second group of sensing windows includes Kb candidate sensing sub-windows, and each candidate sensing sub-window includes at least Yb0 time slots, or each candidate sensing sub-window includes at most Yb1 time slots; wherein, Kb is Positive integers, Yb0 and Yb1 are positive integers. That is to say, the second group of perception windows consists of at least one candidate perception sub-window, and each candidate perception sub-window consists of at least one time slot.

In an implementation manner, Yb0 and/or Yb1 are configured by signaling, or preconfigured, or predefined. It can be seen that the values of Yb0 and/or Yb1 can be configured in various ways.

In an implementation manner, the union of the Kb candidate perception sub-windows is a subset of the perception window; or, the Kb candidate perception sub-windows are Kb time slot groups that are discontinuous in the time domain. That is to say, the Kb candidate perception sub-windows only occupy part of the time domain positions within the perception window in the time domain.

In an implementation manner, the Kb candidate sensing sub-windows include a set of time slots distributed at the second interval P _step2 in the time domain of the Kb group.

In an implementation manner, the value of P _step2 is one-Nth of the size of the sensing sub-window, where N is a positive integer greater than 1; or, P _step2 is configured by signaling.

In an implementation manner, the first device may also obtain second indication information, and the second indication information indicates the perception sub-window used for perception in the Kb candidate perception sub-windows, that is, the first device can determine the location of the Kb sensor in the Kb candidate perception sub-window through the second indication information. Which sensing sub-windows in the candidate sensing sub-windows are used for resource monitoring.

In one implementation, Ya0 and Yb0 are the same; and/or, Ya1 and Yb1 are the same; and/or Ka and Kb are the same; and/or, P _step1 and P _step2 are the same. That is, the first candidate perception sub-window and the second candidate perception sub-window may include the same number of candidate perception sub-windows, and the number of time slots included in the first candidate perception sub-window and the second candidate perception sub-window may also be the same.

In an implementation manner, the value of one or more parameters of Ya0, Ya1, Ka and/or Yb0, Yb1, and Kb corresponds to or is associated with the CBR threshold.

In an implementation manner, the value of one or more parameters in Ya0, Ya1, Ka and/or Yb0, Yb1, Kb corresponds to the CBR threshold value, including: Ya0, Ya1, Ka and/or Yb0, The value of at least one parameter in Yb1 and Kb corresponds to or is associated with at least one CBR threshold value.

In an implementation manner, the values of one or more parameters of Ya0, Ya1, Ka and/or Yb0, Yb1, and Kb correspond to or are associated with values corresponding to the priority of the first data packet.

In an implementation manner, the value of one or more parameters in Ya0, Ya1, Ka and/or Yb0, Yb1, Kb corresponds to or is associated with the value corresponding to the priority of the first data packet, including: Ya0 The value of at least one parameter among , Ya1 , Ka and/or Yb0 , Yb1 , and Kb corresponds to or is associated with a value corresponding to the priority of at least one first data packet.

In an implementation manner, the difference in the time domain resources occupied by the first group of perception windows and the second group of perception windows includes: the first group of perception windows and the second group of perception windows contain different time slots; The second group of sensing windows includes part or all of the same time slot, but the sub-channels in the frequency domain are all or partially different; or, the first group of sensing windows is located before the second group of sensing windows in the time domain; The starting position of the group of perception windows in the time domain is located before the selection window, and the second group of perception windows is located within the selection window in the time domain.

In an implementation manner, the second group of perception windows is located between the first candidate perception sub-window and the Y candidate time slots; wherein, the first candidate perception sub-window belongs to the first group of perception windows, and the first candidate perception sub-window and Y The interval between candidate time slots is P _step1 .

In an implementation manner, the start position of the second group of sensing windows is located between the first candidate sensing sub-window and Y candidate time slots, and the end position of the second group of sensing windows is located in or after Y time slots; A candidate perception sub-window belongs to the first group of perception windows, and the interval between the first candidate perception sub-window and the Y candidate time slots is P _step1 .

In an implementation manner, the second group of sensing windows occupy consecutive or discontinuous time slots in the time domain.

In an implementation manner, the first device determines the first resource set from the candidate resource set according to the resource occupation information, including: the first device according to the monitoring results in the first group of perception windows and the monitoring results in the second group of perception windows. , determine the first resource set from the candidate resource set; or,

The first device determines the first resource occupation information in the candidate resource set according to the monitoring results in the first group of perception windows; the number of resources in the first resource set determined by the first device from the candidate resource set according to the first resource occupation information is less than the predetermined number. Set the value, the first device determines the second resource occupation information in the candidate resource set according to the monitoring results in the second group of perception windows; the first device determines the first resource set from the candidate resource set according to the second resource occupation information; or,

The first device determines a second resource set and a third resource set from the candidate resource set according to the monitoring results in the first group of perception windows and the monitoring results in the second group of perception windows, respectively, and the second resource set is used for the first data packet. The transmission resources of the initial transmission and/or retransmission, the third resource set is used to determine the transmission resources of the retransmission of the first data packet, and the second resource set and the third resource set are subsets of the first resource set; or,

The first device determines a second resource set and a third resource set from the candidate resource set respectively according to the monitoring results in the first group of perception windows and the monitoring results in the second group of perception windows, and the second resource set is used for initializing data packets. transmission resources for transmission and/or retransmission, the third resource set is used to determine transmission resources during resource reselection, and the second resource set and the third resource set are subsets of the first resource set.

In an implementation manner, the first device determining the transmission resource from the first resource set includes: the first device determining the resource for sending the first data packet according to the first candidate resource; the first candidate resource is the first resource set associated with the first group The resources of the Ka candidate perception sub-windows in the perception window, where Ka is a positive integer, and the Ka group of perception sub-windows occupies part of the time domain resources on the resource pool. This manner is beneficial for the first device to determine the resource for sending the first data packet according to the first candidate resource corresponding to the first group of perception windows.

In an implementation manner, the first device determines the resource for sending the first data packet according to the first candidate resource, including: the first device determines the first resource on the first candidate resource according to Ka candidate perception sub-windows; The first resource determines the resource for sending the first data packet.

In an implementation manner, the number of the first resources is less than the preset value, the first device determines the resources for sending the first data packet on the second candidate resources, and the second candidate resources are resources other than the first candidate resources in the selection window. . This method is beneficial for the first device to select a second candidate resource other than the first candidate resource in the selection window when it cannot determine a suitable transmission resource on the first candidate resource or fails to receive the first data packet sent on the first resource. The resource for sending the first data packet is determined in terms of resources, so as to avoid the problem of excessive resource determination delay caused by the first device only re-determining transmission resources according to the monitoring results of the first group of sensing windows at intervals of P _steps .

In an implementation manner, the first device determines the resource for sending the first data packet according to the first candidate resource, the first device determines the first resource from the first candidate resource, and determines the second resource from the second candidate resource, and the second The candidate resources are resources other than the first candidate resource in the selection window, the first resource is used for initial transmission and/or retransmission of the first data packet, and the second resource is used for the retransmission of the first data packet. This manner is beneficial for the first device to determine resources for initial transmission and/or retransmission of the first data packet and resources for retransmission of the first data packet according to the first candidate resource and the second candidate resource, respectively.

In an implementation manner, the number of the first resources is less than the preset value, the first device determines the second resource from the second candidate resource, the second candidate resource is the resource other than the first candidate resource in the selection window, and the second resource is used for determining the transmission resource during resource reselection; the first device determines the resource for sending the first data packet from the second resource.

In an implementation manner, the second resource is an unperceived resource that is closest to the first candidate resource in the second candidate resource. It can be seen that the first device can determine the resources for sending the first data packet according to the unperceived resources, which can avoid the resource determination caused by the first device only re-determining the transmission resources according to the monitoring results of the first group of perception windows at intervals of P _steps . the problem of excessive delay.

In an implementation manner, the second resource is a resource excluding the occupied resource in the second candidate resource, and the occupied resource is the second candidate determined by the first device based on the monitoring result of the first candidate resource and the reservation period. A resource that is reserved or occupied in the resource. This way is also beneficial for the first device to re-determine the transmission resource again according to the monitoring result of the first group of sensing windows without the interval P _step , which can reduce the time delay in resource determination.

In an implementation manner, the first device sends the first data packet from the transmission resource to implement communication between the first device and other devices.

In a second aspect, the present application provides a resource determination method. In this method, the first device determines the first candidate resource, and determines the resource for sending the first data packet according to the first candidate resource. The first candidate resource is located in the resource selection window, the first candidate resource is associated with K groups of perception sub-windows, where K is a positive integer, and the K groups of perception sub-windows occupy part of the time domain resources on the resource pool.

It can be seen that in the embodiment of the present application, the start positions of the first group of perception windows and the second group of perception windows in the time domain are both located before the selection window, which is beneficial for the terminal device to monitor the results of the first group of perception windows and the second group of perception windows. The monitoring result of the window, select the first resource set from the selection window, so as to avoid that the first device can only re-determine the transmission resources again according to the monitoring results of the first group of perception windows at intervals of P _steps , and the resource determination delay is too large. question.

In an implementation manner, K is a positive integer greater than 1, and the K groups of perception sub-windows include K equally-spaced perception sub-windows in the time domain; or, K is 1, and the K groups of perception sub-windows are one in the resource pool. Perceptual subwindows. That is, the K groups of sensing sub-windows may include multiple or one sensing sub-windows.

In an implementation manner, the first device determines the resource for sending the first data packet according to the first candidate resource, including: the first device determines the first resource on the first candidate resource according to the K groups of perception sub-windows, and the first device according to the first A resource determines the resource for sending the first data packet.

In an implementation manner, the first device determines the resource for sending the first data packet according to the first candidate resource, including: the first device determines the first resource from the first candidate resource, and the second resource from the second candidate resource. The second candidate resources are resources other than the first candidate resource in the selection window, the first resource is used for initial transmission and/or retransmission of the first data packet, and the second resource is used for the retransmission of the first data packet. This manner is beneficial for the first device to determine resources for initial transmission and/or retransmission of the first data packet and resources for retransmission of the first data packet according to the first candidate resource and the second candidate resource, respectively.

In an implementation manner, the number of the first resources is less than the preset value, the first device selects the second resource from the second candidate resource, the second candidate resource is a resource other than the first candidate resource in the selection window, and the second resource is used for Determine the transmission resource during resource reselection; the first device determines the resource for sending the first data packet from the second resource.

In an implementation manner, the second resource is a resource other than the occupied resource in the second candidate resource, and the occupied resource is the second resource determined by the first device based on the monitoring results of the K groups of perception sub-windows and the reservation period. The reserved or occupied resources among the candidate resources. This way is also beneficial for the first device to re-determine the transmission resource again according to the monitoring result of the first group of sensing windows without the interval P _step , which can reduce the time delay in resource determination.

In an implementation manner, the first device acquires first configuration information, where the first configuration information indicates the number of the first candidate resources and the positions of the first candidate resources.

In an implementation manner, the number is the minimum number of detection time domain resources or the maximum number of detection time domain resources of each group of perception windows in the K groups of perception sub-windows.

In an implementation manner, the number and/or location of the first candidate resource corresponds to or is associated with the configured CBR threshold of the resource pool, that is, the number and/or location of the first candidate resource is based on the configuration of the resource pool. The CBR threshold value is determined.

In an implementation manner, the number and/or location of the first candidate resource corresponds to or is associated with the configured CBR threshold of the resource pool, including:

The value of the quantity of at least one first candidate resource corresponds to at least one CBR threshold; and/or, the value of the position of at least one first candidate resource corresponds to at least one CBR threshold or Associated.

In an implementation manner, the quantity and/or position of the first candidate resource corresponds to or is associated with the corresponding value of the priority of the first data packet, that is, the quantity and/or position of the first candidate resource is based on the first data packet. priority is determined.

In an implementation manner, the number and/or position of the first candidate resource corresponds to or is associated with the corresponding value of the priority of the first data packet, including: the value of the number of at least one first candidate resource is associated with the at least one value. The corresponding value of the priority of the first data packet is corresponding or associated; and/or, the value of the position of the at least one first candidate resource corresponds to the corresponding value of the priority of the at least one first data packet or Associated.

In a third aspect, the present application further provides a communication device. The communication apparatus has part or all of the functions of the first device described in the first aspect or the second aspect. For example, the function of the communication apparatus may have the function of some or all of the embodiments of the first device in the present application, or may have the function of independently implementing any one of the embodiments of the present application. The functions can be implemented by hardware, or can be implemented by hardware executing corresponding software. The hardware or software includes one or more units or modules corresponding to the above functions.

In a possible design, the structure of the communication device may include a processing unit and a communication unit, and the processing unit is configured to support the communication device to perform the corresponding functions in the above method. The communication unit is used to support communication between the communication device and other communication devices. The communication device may also include a storage unit for coupling with the processing unit and the communication unit, which stores program instructions and data necessary for the communication device.

In an implementation manner, the communication device includes:

A processing unit, configured to obtain resource occupancy information in the candidate resource set according to the monitoring results of M groups of perception windows, where the M groups of perception windows include a first group of perception windows and at least one second group of perception windows, the first group of perception windows Different from the resources occupied by the second group of perception windows, wherein the M is a positive integer not less than 2;

a processing unit, further configured to determine a first resource set from a candidate resource set according to the resource occupation information, where the first resource set is a resource excluding occupied resources from the candidate resource set;

A processing unit, configured to determine transmission resources from the first resource set.

In addition, in this aspect, for other optional implementations of the communication apparatus, reference may be made to the relevant content of the above-mentioned first aspect, which will not be described in detail here.

In an implementation manner, the communication device includes:

A processing unit, configured to determine a first candidate resource, the first candidate resource is located in the resource selection window, and the first candidate resource is associated with K groups of perception sub-windows, where the K is a positive integer, and the K groups of perception The sub-window occupies part of the time domain resources on the resource pool;

The processing unit is further configured to determine the resource for sending the first data packet according to the first candidate resource.

In addition, in this aspect, for other optional implementations of the communication device, reference may be made to the relevant content of the second aspect above, which will not be described in detail here.

As an example, the communication unit may be a transceiver or a communication interface, the storage unit may be a memory, and the processing unit may be a processor.

In an implementation manner, the communication device includes:

a processor, configured to obtain resource occupancy information in the candidate resource set according to the monitoring results of M groups of perception windows, where the M groups of perception windows include a first group of perception windows and at least one second group of perception windows, the first group of perception windows Different from the resources occupied by the second group of perception windows, wherein the M is a positive integer not less than 2;

The processor is further configured to determine, according to the resource occupation information, a first resource set from the candidate resource set, where the first resource set is a resource that excludes occupied resources from the candidate resource set;

The processor is further configured to determine transmission resources from the first resource set.

In another implementation manner, the communication device includes:

a processor, configured to determine a first candidate resource, the first candidate resource is located in the resource selection window, and the first candidate resource is associated with K groups of perception sub-windows, where the K is a positive integer, and the K groups of perception sub-windows The sub-window occupies part of the time domain resources on the resource pool;

The processor is further configured to determine the resource for sending the first data packet according to the first candidate resource.

During implementation, the processor may be used to perform, for example but not limited to, baseband related processing, and the transceiver may be used to perform, for example but not limited to, radio frequency transceiving. The above-mentioned devices may be respectively arranged on chips that are independent of each other, or at least part or all of them may be arranged on the same chip. For example, processors can be further divided into analog baseband processors and digital baseband processors. Among them, the analog baseband processor can be integrated with the transceiver on the same chip, and the digital baseband processor can be set on a separate chip. With the continuous development of integrated circuit technology, more and more devices can be integrated on the same chip. For example, a digital baseband processor can be integrated with a variety of application processors (such as but not limited to graphics processors, multimedia processors, etc.) on the same chip. Such a chip may be called a System on Chip. Whether each device is independently arranged on different chips or integrated on one or more chips often depends on the needs of product design. The embodiments of the present application do not limit the implementation form of the foregoing device.

In a fourth aspect, the present application further provides a processor for executing the above-mentioned various methods. In the process of executing these methods, the process of sending and receiving the above-mentioned information in the above-mentioned methods can be understood as the process of outputting the above-mentioned information by the processor and the process of receiving the above-mentioned information input by the processor. When outputting the above-mentioned information, the processor outputs the above-mentioned information to the transceiver for transmission by the transceiver. After the above-mentioned information is output by the processor, other processing may be required before reaching the transceiver. Similarly, when the processor receives the above-mentioned information input, the transceiver receives the above-mentioned information and inputs it into the processor. Furthermore, after the transceiver receives the above-mentioned information, the above-mentioned information may need to perform other processing before being input to the processor.

Based on the above principles, for example, receiving the first indication information and the second indication information mentioned in the foregoing method may be understood as the processor receiving the inputted first indication information and the second indication information.

For the operations of transmitting, sending and receiving involved in the processor, if there is no special description, or if it does not contradict its actual function or internal logic in the relevant description, it can be more generally understood as the processor output and Receive, input, etc. operations, rather than transmit, transmit, and receive operations directly performed by radio frequency circuits and antennas.

In the implementation process, the above-mentioned processor may be a processor specially used to execute these methods, or may be a processor that executes computer instructions in a memory to execute these methods, such as a general-purpose processor. The above-mentioned memory can be a non-transitory (non-transitory) memory, such as a read-only memory (Read Only Memory, ROM), which can be integrated with the processor on the same chip, or can be set on different chips respectively. The embodiment does not limit the type of the memory and the setting manner of the memory and the processor.

In a fifth aspect, the present application further provides a communication system, the system includes at least one first device, at least one second device, and at least one network device of the above aspects. In another possible design, the system may further include other devices that interact with the first device, the second device or the network device in the solution provided in this application.

In a sixth aspect, the present application provides a computer-readable storage medium for storing computer software instructions, and when the instructions are executed by a communication device, the method described in the first aspect above is implemented.

In a seventh aspect, the present application provides a computer-readable storage medium for storing computer software instructions, and when the instructions are executed by a communication device, the method described in the second aspect above is implemented.

In an eighth aspect, the present application further provides a computer program product comprising instructions, which, when executed on a communication device, cause the communication device to perform the method described in the first aspect above.

In a ninth aspect, the present application further provides a computer program product comprising instructions, which, when executed on a communication device, cause the communication device to perform the method of the second aspect above.

In a tenth aspect, the present application provides a chip system, the chip system includes a processor and an interface, the interface is used to obtain a program or an instruction, and the processor is used to call the program or instruction to implement or support a terminal to implement the first The functions involved in one aspect, for example, determine or process at least one of the data and information involved in the methods described above. In a possible design, the chip system further includes a memory for storing necessary program instructions and data of the terminal. The chip system may be composed of chips, or may include chips and other discrete devices.

In an eleventh aspect, the present application provides a chip system, the chip system includes a processor and an interface, the interface is used to obtain a program or an instruction, and the processor is used to call the program or instruction to implement or support terminal implementation The functions involved in the first aspect, for example, determine or process at least one of the data and information involved in the above method. In a possible design, the chip system further includes a memory for storing necessary program instructions and data of the terminal. The chip system may be composed of chips, or may include chips and other discrete devices.

Description of drawings

1 is a schematic structural diagram of a communication system provided by an embodiment of the present application;

2 is a schematic structural diagram of a partial perception provided by an embodiment of the present application;

3a is a schematic structural diagram of a partial perception provided by an embodiment of the present application;

3b is a schematic structural diagram of another partial perception provided by an embodiment of the present application;

4 is a schematic flowchart of a method for determining a resource provided by an embodiment of the present application;

5 is a schematic structural diagram of another partial perception provided by an embodiment of the present application;

6 is a schematic structural diagram of a second group of sensing windows provided by an embodiment of the present application;

7 is a schematic structural diagram of another second group of sensing windows provided by an embodiment of the present application;

8 is a schematic structural diagram of another second group of sensing windows provided by an embodiment of the present application;

9 is a schematic structural diagram of another second group of sensing windows provided by an embodiment of the present application;

10 is a schematic flowchart of another resource determination method provided by an embodiment of the present application;

FIG. 11 is a schematic structural diagram of a second resource provided by an embodiment of the present application;

12 is a schematic structural diagram of a K group sensing sub-window provided by an embodiment of the present application;

13 is a schematic structural diagram of another K group sensing sub-window provided by an embodiment of the present application;

14 is a schematic structural diagram of another K group sensing sub-window provided by an embodiment of the present application;

15 is a schematic structural diagram of another K group sensing sub-window provided by an embodiment of the present application;

FIG. 16 is a schematic structural diagram of another second resource determination provided by an embodiment of the present application;

FIG. 17 is a schematic structural diagram of a communication device provided by an embodiment of the present application;

FIG. 18 is a schematic structural diagram of another communication device provided by an embodiment of the present application;

FIG. 19 is a schematic structural diagram of a chip provided by an embodiment of the present application.

Detailed ways

The embodiments of the present application will be clearly and completely described below with reference to the accompanying drawings.

First, in order to better understand the resource determination method disclosed by the embodiment of the present application, a communication system applicable to the embodiment of the present application is described.

The technical solutions of the embodiments of the present application can be applied to various communication systems. For example, the Global System for Mobile Communications, the Long Term Evolution (LTE) frequency division duplex system, the LTE time division duplex system, the Universal Mobile Communication System, the 4th Generation (4th-Generation, 4G) system, and the With the continuous development of communication technologies, the technical solutions in the embodiments of the present application may also be used in subsequently evolved communication systems, such as a fifth-generation mobile communication technology (5th-Generation, 5G) system, and the like.

Please refer to FIG. 1. FIG. 1 is a schematic structural diagram of a communication system according to an embodiment of the present application. The communication system may include, but is not limited to, a network device, a first device, and a second device. The number and form of devices shown in FIG. 1 are used as examples and do not constitute limitations to the embodiments of the present application. In practical applications, two or more network devices, two or more first devices, two or more network devices may be included. or two or more second devices. The communication system shown in FIG. 1 uses a network device, a first device, and a second device, and the network device can provide services for the first device and the second device, and the first device and the second device can communicate as example to illustrate. The network device in FIG. 1 is taken as an example of a base station, and the first device and the second device are taken as an example of a car.

The first device can be used as a sending device to communicate with the second device, and optionally, the first device can also be used as a receiving device to communicate with the second device. In the embodiments of the present application, the first device is used as a sending device, and the second device is used as a receiving device as an example for description.

In this embodiment of the present application, the network device may be a device with a wireless transceiver function or a chip that can be provided in the device, and the network device includes but is not limited to: an evolved node B (evolved node B, eNB), a radio network controller ( radio network controller, RNC), node B (Node B, NB), network equipment controller (base station controller, BSC), network equipment transceiver station (base transceiver station, BTS), home network equipment (for example, home evolved Node B , or home Node B, HNB), baseband unit (BBU), access point (AP), wireless relay node, wireless backhaul node, wireless fidelity (wireless fidelity, WIFI) system Transmission point (transmission and reception point, TRP or transmission point, TP), etc., can also be equipment used in 4G, 5G or even 6G systems, such as gNB in NR system, or transmission point (TRP or TP), 4G One or a group (including multiple antenna panels) antenna panels of the network equipment in the system, or, it can also be a network node that constitutes a gNB or a transmission point, such as a baseband unit (BBU), or a distributed unit (distributed unit, DU), or a picocell (Picocell), or a femtocell (Femtocell), or a roadside unit (RSU) in an intelligent driving scenario.

In this embodiment of the present application, the first device and the second device may also be referred to as user equipment (UE), terminal equipment, terminal, access terminal, subscriber unit, subscriber station, mobile station, mobile station, remote station, Remote terminals, mobile devices, computers with mobile terminals, smart vehicles, smart devices related to the Internet of Vehicles (such as smart street lights, etc.), road side units (RSUs), user terminals, user agents or user equipment, which can be applied to 4G, 5G and even 6G systems. The first device and the second device in the embodiments of the present application may be a mobile phone (mobile phone), a tablet computer (Pad), a computer with a wireless transceiver function, a virtual reality (virtual reality, VR) terminal, an augmented reality (augmented reality, AR) terminal, wireless terminal in industrial control, wireless terminal in self driving, wireless terminal in remote medical, wireless terminal in smart grid, transportation Wireless terminals in security (transportation safety), wireless terminals in smart cities, wireless terminals in smart homes, RSUs of the aforementioned wireless terminal types, and so on.

In order to facilitate the understanding of the embodiments disclosed in the present application, the following two points are described.

(1) The scenarios in the embodiments disclosed in this application are described by taking the scenario of an NR network in a wireless communication network as an example. It should be noted that the solutions in the embodiments disclosed in this application can also be applied to other wireless communication networks. can also be replaced with the names of corresponding functions in other wireless communication networks.

(2) The embodiments disclosed in the present application will present various aspects, embodiments or features of the present application around a system including a plurality of devices, components, modules, and the like. It is to be understood and appreciated that the various systems may include additional devices, components, modules, etc., and/or may not include all of the devices, components, modules, etc. discussed in connection with the figures. In addition, combinations of these schemes can also be used.

Next, the related concepts involved in the embodiments of the present application are briefly introduced.

1. Resource pool, perception window, selection window

The resource pool refers to a set of resources for autonomous resource selection scheduled by the signaling configured to the first device. The resource pool is used for sending and/or receiving sideline data of the first device. The unit of resource occupied by the resource pool in the time domain is a preset number of symbols (eg, 2 symbols, 4 symbols, 6 symbols, 10 symbols, 12 symbols, 14 symbols, etc.), time slots or subframes. The units occupying resources in the frequency domain are resource blocks, subchannels, and the like.

The sensing window includes a plurality of candidate sensing sub-windows, and the first device can perform resource monitoring in each candidate sensing sub-window based on the resource pool. Optionally, the first device may select a partial sensing sub-window in the multiple candidate sensing sub-windows to perform actual monitoring to obtain a monitoring result corresponding to the sensing window, and the monitoring result includes resources in the sensing window. resource occupancy information. Optionally, the behavior of the first device monitoring messages sent by other devices in the sensing window can also be expressed as receiving and detecting control information and/or data packets sent by other devices. Optionally, for sidelink communication, the control information is sidelink control information SCI (Sidelink Control Information). Optionally, the first device acquires the time-frequency resource indicated therein and the priority of the received service by detecting the SCI sent by other devices. The first device further determines whether the detected resource is available to the first device according to the magnitude of the RSRP of the detected SCI (or on the reference signal of the data packet indicated by the SCI). Optionally, the unit of the resource occupied by the perception window in the time domain is a preset number of symbols (such as 2 symbols, 4 symbols, 6 symbols, 10 symbols, 12 symbols, 14 symbols, etc.), time slots or subframes; The units that occupy resources in the domain are resource blocks, subchannels, and the like.

The selection window (selection window) means that after the first device detects the arrival of data, the first device determines it according to the data delay requirement. Optionally, the unit of the resource occupied by the selection window in the time domain is a preset number of symbols (such as 2 symbols, 4 symbols, 6 symbols, 10 symbols, 12 symbols, 14 symbols, etc.), time slots or subframes; The units that occupy resources in the domain are resource blocks, subchannels, and the like.

Regarding the time slot n in the present invention, when the first device needs to transmit the V2X service, the upper layer of the first device triggers the bottom layer of the first device to determine resources at the time slot n shown in FIG. 2 . Thereafter, the first device selects a suitable candidate resource as a transmission resource from the candidate resources within the selection window after time slot n according to the monitoring result of the monitoring resources within the range of the listening window (eg, 1000 ms) before time slot n. Optionally, the high layer in this application refers to the MAC layer, the RLC layer, the RRC layer, and the like. When the upper layer is the MAC layer, the lower layer includes the physical layer; when the upper layer is the RLC or RRC layer, the lower layer may include the MAC and/or the physical layer.

As shown in Figure 2, the first device performs resource monitoring on the resource set within the range of nT ₀ to nT _proc,0 , then the sensing window is the resource set within the range of nT ₀ to nT _proc,0

Wherein T ₀ , T _proc,0 are signaling configuration or predetermined parameters, which are greater than or equal to zero. Optionally, T ₀ is used to represent the starting time position or size of the perception window. Optionally, T _proc,0 is used to indicate how long before the data arrives at time n, the data needs to be perceived. In addition, the first device performs resource selection in the resource set in the range of n+T ₁ to n+T ₂ , then the selection window is the resource set in the range of n+T ₁ to n+T ₂ [n+T ₁ ,n+ _T2 ]. Among them, n is the data arrival time, that is, at time n, the first device detects the data to be transmitted; the packet delay budget PDB (packet delay budget) is the data delay required by the first device to transmit data , that is, the first device needs to transmit data within the T _PDB time. Wherein T ₁ and T ₂ are signaling configuration or predetermined parameters, which are greater than or equal to zero. Optionally, n+T ₁ is used to represent the start time position of the resource selection window, and n+T ₂ is used to represent the end time position of the resource selection window. Optionally, when the UE selects resources, n+T1 is usually not greater than n+T _Proc,1 . Optionally, where T _Proc,1 is used to represent the processing time at the beginning of resource selection, and is a constant not less than 0. Optionally, the value of T ₂ is not greater than the value of the parameter T _PDB .

2. Candidate resource set, first candidate resource, second candidate resource

The candidate resource set refers to a resource set within the selection window that can be used by the first device to determine transmission resources. As shown in FIG. 2 , the candidate resource set is the set of time-frequency resources in the range of n+T _proc,1 to n+T _2min in FIG. 2 , or the time-frequency resource set in the range of [n+T ₁ ,n+T ₂ ] A collection of resources.

The first candidate resource is the first candidate resource corresponding to the candidate perception sub-window in the candidate resource set, as shown in FIG. 2 .

The second candidate resource is the resource in the candidate resource set except the first candidate resource, that is, the resource within the range of n+T _proc,1 to n+T _2min or the range of [n+T ₁ ,n+T ₂ ] in FIG. 2 Except the first candidate resource in the set of .

3. Time slot

A time slot refers to a transmission unit that occupies a certain period of time during one transmission. For example, the number of symbols included can be 12, 14, 2, 4, 6, 9, 10, etc. The duration of a slot is determined by the subcarrier spacing used by the slot and the number of occupied symbols. In the present invention, the time slot may be a physical time slot or a logical time slot. A physical slot refers to the set of all slots in the time domain. For example, it may include those that can be used for sideline communication or those that cannot be used for sideline communication. It may be an available time slot allocated to the upstream side of the resource pool, or it may be a time slot on the resource pool that is not allocated to the side line communication. For example, the logical time domain resource refers to a time domain resource obtained by repeatedly numbering the set of time domain resources that can be used for sidelink communication indicated by signaling on the resource pool of sidelink communication. For example, on a continuous physical resource of 100 time slots, if only even-numbered time slots are used for sideline transmission, there are a total of 50 logical time slots on the corresponding 100 physical time slots, and the numbers can be from 1 to 50. Optionally, the perception window, candidate resource set, first candidate resource, second candidate resource, reservation period, etc. in the present invention represent resources in the time domain, and the unit may be either a physical time slot or a logical time slot. .

Again, the technical problems to be solved by the embodiments of the present application are briefly described.

In the NR system, the transmission data has high reliability requirements. However, in the partially perceptual resource selection method, only some resources are monitored, and messages sent by other users will be missed, resulting in an increase in the number of data retransmissions. The efficiency of the system is reduced, thereby reducing the reliability of the NR system. Therefore, how to improve the reliability of the NR system is still one of the problems that need to be solved at present when the resource selection of partial perception is performed.

As shown in Fig. 3a, when the first device performs partial sensing, it only performs resource sensing on part of the time slots in the sensing window. If the first device cannot determine an unoccupied transmission resource from the first candidate resource in the candidate resource set, and continues to re-select transmission resources, it can collect part of the perceived resource occupancy information only after an interval of P _steps . As shown in Figure 3a, if the P _step exceeds the PDB delay of the first device to transmit data, the first device cannot determine the transmission resource in the next candidate resource, that is, the first device fails to determine the transmission resource or cannot obtain valid transmission resource.

In addition, the transmission resources determined by the first device are shown as resource a and resource b in Fig. 3b. If the first device transmits data to the second device on resource a and resource b, the second device does not receive the data, that is, It is said that the first device fails to receive the data transmitted on resource a and resource b, and cannot monitor the resource within P _step after the monitored resource, the first device still needs an interval of P _step to reselect the transmission resource, so This results in a large delay in resource selection.

It can be seen that in the partial sensing, for the situation that the first device needs to re-determine the transmission resource, the first device can only reselect the transmission resource after an interval of P _steps , resulting in a large delay in resource selection.

The embodiment of the present application provides a resource determination method 100, in which the first device obtains resource occupation information in a candidate resource set according to the monitoring results of M groups of perception windows, and determines a first resource set from the candidate resource set according to the resource occupation information , and further, determine the transmission resource from the first resource set.

The M groups of perception windows include a first group of perception windows and at least one second group of perception windows, the first group of perception windows and the second group of perception windows occupy different resources, wherein M is not less than A positive integer of 2.

The embodiment of the present application includes at least two sets of sensing windows. Compared with the current partial sensing resource selection method, the monitoring positions and opportunities for resource monitoring are increased, the reliability of transmission resource determination can be improved, and the The number of data retransmissions of a device in the NR system, thereby improving the reliability of the system.

Optionally, in view of the above problems, the present application may further illustrate the technical problems of the present invention by comparing the differences between the prior art transmission schemes of LTE-V and NR-V with reference to FIG. 2 . As shown in Figure 2, according to the existing NR-V protocol, a data packet can be transmitted up to 32 times. If one retransmission is reserved in 32 time slots for each transmission, the maximum 32 transmissions of a data packet (including the first initial transmission and the remaining 31 retransmissions) occupy a maximum of 32/2* in time. 32 = 512 time slots. If two other retransmissions are reserved in 32 time slots for each initial transmission, the maximum 32 transmissions of a data packet (including the first initial transmission and the remaining 31 retransmissions) occupy the maximum time in terms of [30/ 3+1]*32=352 slots. In the partial sensing of LTE-V, for each data packet TB, only two transmissions (including initial transmission and retransmission) are required at most. And, these 2 transmissions occupy 16 consecutive time slots (physically consecutive or logically consecutive) in total. The transmission resources required by the 16 time slots may be included by the size of Y subframes (a set of candidate resources in partial sensing, the value of which may reach 16 subframes, for example).

In partial sensing in LTE-V, the service period is an integer multiple of 100 subframes (ie, 100ms). Therefore, in LTE-V, retransmission will not result in no resources being selected within a resource Y. But for NR-V, when directly borrowing the existing technology of LTE-V, the size of the Y value is required to include the number of time slots (512 or 352 time slots) required for the maximum number of retransmissions, or P _step is small enough. But either way, the purpose of saving power consumption for NR-V partial sensing will hardly be achieved, because if each sub-window needs to monitor 512 or 352 time slots, it is almost the same as the number of time slots for full sensing detection. of. On the contrary, if the configuration of LTE-V is still used, it is possible that no resources can be selected. For example, if P _step = 100 and Y = 32, the resources of the first initial transmission and the subsequent second and/or third retransmission can be selected according to the results of the latest partial sensing. If there is an error in the data packet during the second or third retransmission, the next retransmission for this TB needs to be performed, as shown in Figure 2 above, the subsequent retransmission has no corresponding partial sensing monitoring. As a result, the corresponding transmission resource cannot be selected at this time.

In one embodiment, the starting positions of the first group of perception windows and the second group of perception windows in the time domain are all located before the selection window, which is beneficial to the first device according to the monitoring results of the first group of perception windows and the second group of perception windows. the monitoring result, select the first resource set from the selection window, so as to avoid the problem of excessive resource determination delay caused by the first device only re-determining transmission resources according to the monitoring results of the first group of perception windows at intervals of P _steps . . Specifically, the embodiment of the present application uses the resource determination method 200 as an example to describe the implementation manner.

In another embodiment, the start position of the first group of perception windows in the time domain is located before the selection window, and the second group of perception windows is located within the selection window in the time domain. Since the second group of perception windows is located in the selection window in the time domain, it is beneficial to determine the transmission resources from the candidate resource set according to the monitoring results of the first group of perception windows, and then combine the monitoring results of the second group of perception windows to further extract the transmission resources from the transmission resources. The first resource set is determined in the resource, so as to avoid the influence of unpredictable, random and short-term sudden aperiodic services on system reliability. Specifically, the embodiment of the present application uses the resource determination method 300 as an example to describe the implementation manner.

In yet another implementation manner, the first device determines the transmission resource from the first resource set, and may determine the first resource for the first device according to the first candidate resource, where the first candidate resource is the first group associated with the first resource set. Resource of Ka candidate perception sub-windows in the perception window; the first resource is used to determine the resource for sending the first data. The first device may determine, in addition to the first resource according to the first candidate resource, the second resource according to the second candidate resource, and the second candidate resource is a resource other than the first candidate resource in the selection window. Specifically, the first resource may be used for initial transmission and/or retransmission of the first data packet, and the second resource may be used for retransmission of the first data packet or a resource for resource reselection. It can be seen that this embodiment is beneficial to avoid the problem of excessive delay caused by the first device only determining the resources used for retransmission or the resources used for resource reselection according to the monitoring results of the first group of sensing windows at intervals of P _steps . . Specifically, this embodiment of the present application will be described by taking the resource determination method 400 as an example. Optionally, the resource determination method 400 is applicable to the case of one or more groups of perception windows, and the resource determination method 400 is described taking the first group of perception windows as an example.

The embodiments of the present application and related implementations thereof will be described below with reference to the accompanying drawings.

Please refer to FIG. 4. FIG. 4 is a schematic flowchart of a resource determination method 100 provided by an embodiment of the present application. The resource determination method 100 is described from the perspective of a first device. The resource determination method 100 includes but is not limited to the following steps:

S101, the first device obtains resource occupancy information in a candidate resource set according to the monitoring results of M groups of perception windows, where the M groups of perception windows include a first group of perception windows and at least one second group of perception windows;

Wherein, the time domain resources occupied by the first group of perception windows and the second group of perception windows are different, and M is a positive integer not less than 2.

The resource occupation information in the resource pool refers to the information of the resources occupied in the resource pool. The first device obtains the resource occupation information in the candidate resource set according to the monitoring results of the M groups of perception windows. The resource with the preset value is determined as the occupied resource. Resource occupancy information can be obtained from the set of occupied resources detected in the perception window.

In an implementation manner, the first group of sensing windows are the sensing windows in the range from A1 to B1 in FIG. 5 , and the second group of sensing windows are the sensing windows in the range from C1 to D1 in FIG. 5 . That is, the start positions of the first group of perception windows and the second group of perception windows in the time domain are both before the selection window, and both the first group of perception windows and the second group of perception windows include multiple candidate perception sub-windows.

In this manner, the first group of perception windows and the second group of perception windows include different time domains, that is, the first group of perception windows and the second group of perception windows shown in FIG. 5 occupy different time slots in the time domain. Or, the first group of perception windows and the second group of perception windows contain part or all of the same time slots, but the sub-channels in the frequency domain are totally or partially different, that is, the first group of perception windows and the second group of perception windows The time slots occupied in the time domain overlap partially or completely, but the subchannels included in the first group of sensing windows are different from the subchannels included in the second group of sensing windows.

In another implementation manner, the first group of sensing windows are the sensing windows in the range from A2 to B2 in FIG. 6 , and the second group of sensing windows are the sensing windows in the range from C2 to D2 shown in FIG. 6 . That is, the starting position of the first group of perception windows in the time domain is before the selection window, and the second group of perception windows is located within the selection window in the time domain. At this time, the second group of sensing windows may also be called short monitoring windows, and the naming of the second group of sensing windows is not limited. The first group of perception windows and the second group of perception windows contain different time slots, that is, the first group of perception windows and the second group of perception windows do not have overlapping parts in the time domain.

In an implementation manner, the first group of perception windows includes Ka candidate perception sub-windows, and the candidate perception sub-windows include at least Ya0 time slots, or the candidate perception sub-windows include up to multiple Ya1 time slots, that is, the first group of perception windows. The number of time slots of the candidate sensing sub-window is greater than or equal to Ya0, and less than or equal to Ya1. Among them, Ya0 and Ya1 are positive integers. As shown in FIG. 5 , the first black thin bar in the candidate perception sub-windows in the first group of perception windows is a time slot included in the candidate perception sub-windows. In addition, Ka is a positive integer, so the first group of perception windows may include one candidate perception sub-window, or may include multiple candidate perception sub-windows.

In an implementation manner, Ya0 and/or Ya1 are configured by signaling, or preconfigured, or predefined. It can be understood that the signaling configuration refers to the configuration configured by the network device to the first device through signaling; the pre-configured refers to the network device pre-configured for the first device in advance; the predefined refers to the predefined configuration in the first device. It can also be understood that the first device is determined according to its own processing capability.

In an implementation manner, the union of the Ka candidate perception sub-windows is a subset of the perception windows in the resource pool. That is to say, all candidate sensing sub-windows only occupy a part of the sensing window in the resource pool. As shown in FIG. 5 , all candidate sensing sub-windows in the first group of sensing windows only occupy part of the resources of the sensing window, but do not occupy all the resources of the sensing window.

In another implementation manner, the Ka candidate sensing sub-windows are discrete Ka time-slot groups in the time domain, that is, each candidate sensing sub-window in the first group of sensing windows is a time slot group, a time slot group includes multiple time slots.

In an implementation manner, the Ka candidate perception sub-windows include a set of time slots distributed at a first interval P _step1 in the time domain of the Ka group, that is, as shown in FIG. 5 , each candidate perception sub-window in the Ka candidate perception sub-windows. The windows are all at the same P _step1 interval in the time domain.

In an implementation manner, the value of P _step1 is one-Nth of the size of the sensing sub-window, and N is a positive integer greater than 1; or, the P _step1 is configured by signaling.

In an implementation manner, the first device further acquires first indication information, where the first indication information indicates a sensing sub-window used for sensing in the Ka candidate sensing sub-windows. That is, the first device can obtain the sensing sub-windows used for sensing in the Ka candidate sensing sub-windows by acquiring the first indication information, so as to perform resource sensing in the sensing sub-windows indicated by the first indication information, and obtain resource occupation information.

In an implementation manner, the sensing sub-window indicated by the first indication information for sensing is a partial candidate sensing sub-window in the Ka candidate sensing sub-windows. In this manner, the first device only needs to perform resource sensing on some candidate sensing sub-windows in the Ka candidate sensing sub-windows. For example, for example, the first group of perception windows includes candidate perception sub-window a, candidate perception sub-window b, candidate perception sub-window c, candidate perception sub-window d, and candidate perception sub-window e, and the first indication information indicates the five candidate perception sub-windows The perception sub-windows used for perception in the sub-windows are the candidate perception sub-window a, the candidate perception sub-window d and the candidate perception sub-window e, then the candidate perception sub-window a and the candidate perception sub-window of the first device in the first group of perception windows The resource is sensed in the window d and the candidate sensing sub-window e.

In another implementation manner, the sensing sub-windows used for sensing in the Ka candidate sensing sub-windows indicated by the first indication information are all candidate sensing sub-windows in the Ka candidate sensing sub-windows. In this manner, the first device needs to perform resource sensing on each candidate sensing sub-window in the Ka candidate sensing sub-windows. For example, the first group of perception windows includes candidate perception sub-window a, candidate perception sub-window b, candidate perception sub-window c, candidate perception sub-window d, and candidate perception sub-window e, and the first indication information indicates that in the first group of perception windows the five candidate sensing sub-windows, the first device needs to perform resource sensing in all candidate sensing sub-windows in the first group of sensing windows.

In an implementation manner, the value of one or more parameters in Ya0, Ya1, Ka and/or Yb0, Yb1, Kb corresponds to or is associated with the CBR threshold value, including: Ya0, Ya1, Ka and/ Or the value of at least one parameter of Yb0, Yb1, and Kb corresponds to or is associated with at least one CBR threshold value.

In an implementation manner, the value of one or more parameters of Ya0, Ya1, Ka and/or Yb0, Yb1, Kb corresponds to or is associated with the value corresponding to the priority of the first data packet.

Optionally, the priority may be the priority information of the first data packet, the priority information of the logical channel corresponding to the first data packet, or the priority information of the first data packet indicated in the SCI. , which is not limited in the present invention.

Optionally, the above correspondence or association may be the values between parameters configured through signaling to establish the above correspondence. The signaling may be signaling configured in the resource pool.

S102. The first device determines a first resource set from a candidate resource set according to the resource occupation information;

The first resource set is a resource that excludes occupied resources from the candidate resource set. That is, the first device determines, according to the resource occupation information, a resource other than the resource occupied in the candidate resource set as the first resource set.

In an implementation manner, the first device determines the second resource set and the third resource set from the candidate resource set according to the monitoring results in the first group of perception windows and the monitoring results in the second group of perception windows, respectively. The transmission resources used for the initial transmission and/or retransmission of the first data packet, the third resource set is used to determine the transmission resources for the retransmission of the first data packet, and the second resource set and the third resource set are the first resource set subset of . The second resource set is an unoccupied resource set in the candidate resource set corresponding to the first group of perception windows, and the third resource set is an unoccupied resource set in the candidate resource set corresponding to the second group of perception windows. This manner is beneficial for the first device to make full use of the monitoring results of the first set of sensing windows and the second set of sensing windows to determine transmission resources for initial transmission and/or retransmission of the first data packet.

In another implementation manner, the first device determines the second resource set and the third resource set from the candidate resource set according to the monitoring results in the first group of perception windows and the monitoring results in the second group of perception windows, respectively. The second resource set and the third resource set are subsets of the first resource set. This manner is beneficial for the first device to use the first set of sensing windows and the second set of sensing windows to determine transmission resources for initial transmission and/or retransmission of data packets, and transmission resources for resource reselection.

S103. The first device determines transmission resources from the first resource set.

The first resource set includes unoccupied resources in the resource pool, so the first device can determine the transmission resource from the first resource set. For example, the first device determines the resource in the first resource set that is closest to the perceived data to be transmitted as the transmission resource for transmitting the data to be transmitted.

In an implementation manner, the first device also sends the first data packet from the transmission resource to implement communication between the first device and other devices.

In addition, in the embodiment of the present application, the first device acquires resource occupation information in the candidate resource set according to the M groups of perception windows, and determines the first resource set from the candidate resource set, and then can determine the transmission resource from the first resource set. Since the embodiment of the present application includes at least two sets of sensing windows, it is beneficial for the first device to not only determine transmission resources according to the monitoring results of the first set of sensing windows, but also determine transmission resources according to the monitoring results of the second set of sensing windows, and further It is beneficial to avoid that the first device can only re-determine the transmission resources according to the monitoring results of the first group of perception windows at intervals of P _steps when the transmission resources determined according to the monitoring results of the first group of perception windows are inappropriate or the transmitted data fails to receive. The resulting delay in resource determination is too large.

This embodiment of the present application provides another resource determination method 200 . In the resource determination method 200, the M groups of perception windows include a first group of perception windows and at least one second group of perception windows, and the start positions of the first group of perception windows and the second group of perception windows in the time domain are both located before the selection window As an example, the first device obtains resource occupation information in the resource candidate set according to the monitoring results of the first group of perception windows and the second group of perception windows, and determines the first resource set from the candidate resource set according to the resource occupation information, and then Transmission resources are determined from the first resource set. That is, in the embodiment of the present application, the sensing windows in the range from A1 to B1 in FIG. 5 are the first group of sensing windows, and the sensing windows in the range from C1 to D1 in FIG. 5 are the second set of sensing windows.

In this embodiment of the present application, the first group of perception windows is as described in the resource determination method 100, and will not be described in detail again. The second group of perception windows includes Kb candidate perception sub-windows, each candidate perception sub-window includes at least Yb0 time slots, or each candidate perception sub-window includes at most Yb1 time slots, that is, in the second group of perception windows The number of candidate perception sub-windows is greater than or equal to Yb0, and less than or equal to Yb1. Among them, Yb0 and Yb1 are positive integers. In addition, Kb is a positive integer, so the second group of sensing windows may include one candidate sensing sub-window, and may also include multiple candidate sensing sub-windows.

In an implementation manner, Yb0 and/or Yb1 are configured by signaling, or preconfigured, or predefined.

In an implementation manner, the union of the Kb candidate perception sub-windows is a subset of the perception windows in the resource pool, that is, all candidate perception sub-windows occupy a part of the perception windows in the resource pool. For example, as shown in FIG. 5 , all candidate sensing sub-windows in the second group of sensing windows only occupy part of the resources of the sensing window, but do not occupy all the resources of the sensing window.

In another implementation manner, the Kb candidate sensing sub-windows are Kb time-slot groups that are discontinuous in the time domain, that is, each candidate sensing sub-window in the second group of sensing windows is a time-slot group, and in a time-slot group Include multiple time slots.

In an implementation manner, the Kb candidate perception sub-windows include a set of time slots distributed at the second interval P _step2 in the time domain of the Kb group, that is, as shown in FIG. 5 , each candidate perception sub-window in the Kb candidate perception sub-windows are all at the same P _step2 interval in the time domain.

In an implementation manner, the first device further acquires second indication information, where the second indication information indicates a sensing sub-window used for sensing among the Kb candidate sensing sub-windows. That is, the first device can obtain the sensing sub-windows used for sensing in the Kb candidate sensing sub-windows by acquiring the second indication information, so that the first device can perform resource sensing in the sensing sub-windows indicated by the second indication information to obtain resource occupation information.

For the indication manner of the second indication information to the sensing sub-windows used for sensing in the second group of sensing windows, reference may be made to the indication manner of the first indication information to the sensing sub-windows used for sensing in the first group of sensing windows, which will not be described in detail.

In one implementation, Ya0 and Yb0 are the same; and/or, Ya1 and Yb1 are the same; and/or Ka and Kb are the same; and/or, P _step1 and P _step2 are the same. That is to say, the number of candidate perception sub-windows included in the first group of perception windows and the second group of perception windows is the same, optional, and may also be different; the number of time slots included in the candidate perception sub-windows in the first group of perception windows and the The number of time slots included in the candidate perception sub-windows in the second group of perception windows is the same, optional, or different; the interval between the candidate perception sub-windows in the first group of perception windows and the candidate perception sub-windows in the second group of perception windows The interval is the same, optional, or different.

In an implementation manner, the candidate perception sub-windows in the first group of perception windows and the candidate perception sub-windows in the second group of perception windows do not overlap or partially overlap in the time domain, and the specific implementation method depends on the implementation of the first device. ability. For example, the first device has a strong processing capability and can process resources with overlapping parts separately, then the candidate perception sub-windows in the first group of perception windows and the candidate perception sub-windows in the second group of perception windows can be processed in the time domain. Partially overlapping.

In an implementation manner, the first device determines the first resource occupation information in the resource pool according to the monitoring results in the first group of perception windows, and the first device determines the first resource set from the candidate resource set according to the first resource occupation information. The number of resources in the resource pool is less than the preset value, the first device determines the second resource occupation information in the resource pool according to the monitoring results in the second group of perception windows, and the first device determines the first resource from the candidate resource set according to the second resource occupation information. set. That is to say, when the number of resources in the first resource set determined by the first device from the candidate resource set according to the first resource occupation information is less than the preset value, the first device can determine the first resource set according to the determined second resource occupation information without any interval P _step and then re-select transmission resources.

It can be seen that the implementation of the present application is beneficial to the first device to select the first resource set from the selection window according to the monitoring results of the first group of perception windows and the monitoring results of the second group of perception windows, so as to avoid that the first device can only repeat at intervals of P _steps . According to the monitoring results of the first group of perception windows, the problem of excessive delay in resource determination caused by transmission resources is re-determined.

This embodiment of the present application provides yet another resource determination method 300 . The difference between the resource determination method 300 and the resource determination method 200 is that the resource determination method 300 includes a first group of perception windows and a second group of perception windows with M groups of perception windows, and the starting position of the first group of perception windows in the time domain Before the selection window, the second group of sensing windows is in the selection window as an example to illustrate. That is to say, the sensing windows in the range from A2 to B2 in FIG. 6 are the first set of sensing windows, and the sensing windows in the range from C2 to D2 shown in FIG. 6 are the second set of sensing windows.

In an implementation manner, as shown in FIG. 6 , the second group of perception windows is located between the first candidate perception sub-window and the Y candidate time slots, wherein the first candidate perception sub-window belongs to the first group of perception windows, and the first candidate perception sub-window belongs to the first group of perception windows. The interval between the candidate sensing sub-window and the Y candidate time slots is P _step1 , and the second group of sensing windows occupies consecutive time slots in the time domain. That is, the second set of sensing windows are consecutive time slots located between the first candidate sensing sub-window and the Y candidate time slots.

In this method, the size of the second group of sensing windows is W or W-1 or W-1-T3, and the starting position of the second group of sensing windows is Y0-W-1, or Y0-W, or Y0-W-1 -T3, or Y0-W-T3, thus, the cut-off position of the second group of sensing windows is Y0-1, or Y0, or Y0-1-T3, or Y0-T3. Wherein, W is a positive integer, for example, W is 30, 31, 32, 50, 100, etc.; T3 is a positive integer. Optionally, T3 may be the maximum time to complete the sensing and resource selection process, or the time required to identify candidate resources and select a subset of potential lateral transmission resources. Optionally, the value of T3 is determined by the interval of subcarriers. For example, when the subcarrier intervals are 15KHz, 30KHz, 60KHz, and 120KHz, the corresponding T3 values are 3 time slots, 5 time slots, 9 time slots, and 17 time slots, respectively.

In another implementation manner, the start position of the second group of sensing windows is located between the first candidate sensing sub-window and the Y candidate time slots, and the end position of the second group of sensing windows is located within or after the Y time slots, wherein the first A candidate perception sub-window belongs to the first group of perception windows, the interval between the first candidate perception sub-window and the Y candidate time slots is P _step1 , and the second group of perception windows occupies consecutive time slots in the time domain. That is, the second set of perception windows are consecutive time slots spanning Y time slots. For example, as shown in FIG. 7 , the start position of the second group of sensing windows is located between the first candidate sensing sub-window and the Y candidate time slots, and the end position of the second group of sensing windows is located after the Y candidate time slots.

In this method, the starting position of the second group of sensing windows is Y0-W-1, or Y0-W, or Y0-W-1-T3, or Y0-W-T3, so that the cut-off position of the second group of sensing windows It is Yn-1, or Yn, or Yn-1-T3, or Yn-T3. Among them, Yn is the position of the last time slot of resource selection. The value of T3 is the same as the above method, and will not be repeated here.

It can be seen that the second group of sensing windows in Fig. 6 and Fig. 7 occupy consecutive time slots in the time domain.

In another implementation manner, as shown in FIG. 8 , the second group of perception windows is located between the first candidate perception sub-window and the Y candidate time slots, wherein the first candidate perception sub-window belongs to the first group of perception windows, and the first candidate perception sub-window belongs to the first group of perception windows. The interval between the candidate sensing sub-window and the Y candidate time slots is P _step1 . In addition, the second group of perception windows includes Kb candidate perception sub-windows, and the Kb candidate perception sub-windows are a set of Kb time slots spaced at the same first interval P _step2 in the time domain. That is, the second set of perception windows is a set of Kb time slots located between the first candidate perception sub-window and the Y candidate time slots.

In another implementation manner, the start position of the second group of sensing windows is located between the first candidate sensing sub-window and the Y candidate time slots, and the end position of the second group of sensing windows is located within or after the Y time slots, wherein the first A candidate perception sub-window belongs to the first group of perception windows, and the interval between the first candidate perception sub-window and the Y candidate time slots is P _step1 . In addition, the second group of perception windows includes Kb candidate perception sub-windows, and the Kb candidate perception sub-windows are a set of Kb time slots spaced at the same first interval P _step2 in the time domain. That is, the second set of perception windows is a set spanning Y slots and including Kb slots. For example, as shown in Figure 9, the start position of the second group of sensing windows is between the first candidate sensing sub-window and the Y candidate time slots, the end position of the second group of sensing windows is after the Y candidate time slots, and the first The two sets of perception windows are sets of discontinuous time slots.

It can be seen that the second group of sensing windows in Fig. 8 and Fig. 9 occupy discontinuous time slots in the time domain.

In this manner, the value of P _step2 is 1/N of the size of the sensing sub-window, and N is a positive integer greater than 1; or, P _step2 is configured by signaling. Optionally, P _step2 =floor(T _m2 /M), or P _step2 =ceil(T _m2 /M) or P _step2 =(T _m2 /M), where T _m2 is the size of the sensing sub-window, and M is The number of time slots for partial sensing in the sensing sub-window size. The value of M is configured by signaling or pre-configured. floor(x) means rounding down x, and ceil(x) means rounding up x .

Optionally, the partial sensing parameters in the second group of sensing windows and the partial sensing parameters in the first group of sensing windows are configured independently of each other.

In an implementation manner, the second group of sensing windows is configured through preconfigured signaling, where the preconfigured signaling includes the size, start position and end position of the second group of sensing windows.

The signaling configuration in this embodiment of the present application refers to the configuration through the network, or the configuration through predefined signaling.

In an implementation manner, the preconfigured signaling is used for the first device to perform partial awareness of the resource pool, or the preconfigured signaling is used for the first device to perform resource reselection.

In an implementation manner, the first device determines the first resource set from the candidate resource set according to the monitoring results in the first set of perception windows and the monitoring results in the second set of perception windows, thereby determining the transmission from the first resource set. resource.

It can be seen that in the embodiment of the present application, since the second group of perception windows is located in the selection window in the time domain, it is beneficial to combine the transmission resources determined from the candidate resource set according to the monitoring results of the first group of perception windows, and then combine the second group of perception windows The monitoring result of the window further determines the first resource set from the transmission resource, so as to avoid the influence of unpredictable, random and short-term burst aperiodic services on system reliability.

Please refer to FIG. 10. FIG. 10 is a schematic flowchart of another resource determination method 400 provided by an embodiment of the present application. The resource determination method 400 is also described from the perspective of the first device. The resource determination method 400 includes but is not limited to the following steps:

S401: The first device determines a first candidate resource;

In an implementation manner, the first candidate resource is a resource associated with Ka candidate perception sub-windows in the first group of perception windows in the first resource set. Among them, Ka is a positive integer, and the perception sub-window of the Ka group occupies part of the time domain resources on the resource pool. The first candidate resource is indicated in the selection window in FIG. 11 .

In another implementation manner, the first candidate resource is located in the resource selection window, and the first candidate resource is associated with K groups of perception sub-windows. Among them, K is a positive integer, and K groups of perception sub-windows occupy part of the time domain resources on the resource pool.

In an implementation manner, K is a positive integer greater than or equal to 1, and the K groups of perceptual sub-windows include K equally-spaced perceptual sub-windows in the time domain. For example, as shown in FIG. 12 , the K groups of perceptual sub-windows include a plurality of perceptual sub-windows that are equally spaced in the time domain.

In another implementation manner, the value of K is 1, and the K group of perception sub-windows is a perception sub-window on the resource pool, that is, as shown in FIG. 13 , there is only one perception sub-window on the resource pool.

In an implementation manner, the first device further acquires first configuration information, where the first configuration information indicates the number of the first candidate resources and the positions of the first candidate resources. Wherein, the number is the minimum number of detection time domain resources or the maximum number of detection time domain resources of each group of perception windows in the K groups of perception sub-windows. That is, the first configuration information indicates the number of time slots and the positions of the time slots in the first candidate resource.

In an implementation manner, the number and/or location of the first candidate resource corresponds to or is associated with a configured channel busy ratio (CBR) threshold of the resource pool. Wherein, the number and/or position of the first candidate resource corresponds to or is associated with the channel busy ratio CBR threshold value configured in the resource pool, including: the value of the number of at least one first candidate resource and the at least one CBR The threshold value corresponds to or is associated with; and/or, the value of the position of at least one first candidate resource corresponds to or is associated with at least one CBR threshold value. That is, the quantity of the at least one first candidate resource is determined according to the CBR threshold value configured in the resource pool, or the location of the at least one first candidate resource is determined according to the CBR threshold value configured in the resource pool.

In another implementation manner, the number and/or position of the first candidate resource corresponds to or is associated with the corresponding value of the priority of the first data packet. Wherein, the quantity and/or position of the first candidate resource corresponds to or is associated with the corresponding value of the priority of the first data packet, including: the value of the quantity of at least one first candidate resource is associated with the value of the at least one first candidate resource. The corresponding value of the priority of a data packet corresponds to or is associated with; and/or, the value of the position of at least one first candidate resource corresponds to or is associated with the corresponding value of the priority of the at least one first data packet . That is, the quantity of the at least one first candidate resource is determined according to the priority of the first data packet, or the position of the at least one first candidate resource is determined according to the priority of the first data packet. Optionally, the priority may be the priority information of the first data packet, the priority information of the logical channel corresponding to the first data packet, or the priority information of the first data packet indicated in the SCI. , which is not limited in the present invention.

In an implementation manner, the K groups of perception sub-windows associated with the first candidate resource include a plurality of perception sub-windows at equal intervals in the time domain, and the first device can also receive the perception sub-windows used to indicate the K perception sub-windows for monitoring. child window. For example, the second configuration information indicates the sensing sub-window a and the sensing sub-window b in FIG. 14 , that is, the first device only needs to monitor the resources occupied by the sensing sub-window a and the sensing sub-window b.

In another implementation manner, the K groups of sensing sub-windows associated with the first candidate resource are the sensing sub-windows shown in FIG. 15 , that is, there is no interval between each group of sensing sub-windows. The second configuration information received by the first device also indicates a sensing sub-window used for monitoring in the K groups of sensing sub-windows. For example, the second configuration information indicates the sensing sub-window c and the sensing sub-window d in FIG. 15 , that is, the first device only needs to monitor resources on the resources occupied by the sensing sub-window c and the sensing sub-window d.

S402: The first device determines the resource for sending the first data packet according to the first candidate resource.

In an implementation manner, the first device determines the resource for sending the first data packet according to the first candidate resource, including: the first device determines the first resource on the first candidate resource according to Ka candidate perception sub-windows; The first resource determines the resource for sending the first data packet. That is, the resource for sending the first data packet is determined by the first device on the first candidate resource according to the monitoring result of the first group of sensing windows.

In an implementation manner, the number of the first resources is less than the preset value, the first device determines the resources for sending the first data packet on the second candidate resources, and the second candidate resources are resources other than the first candidate resources in the selection window. . Among them, the second candidate resource is the resource except the first candidate resource in the selection window as shown in FIG. 14 , that is, the resource set within the range of n ₊ T1 to n+T2 except the _first candidate resource. If the preset value is zero, the number of the first resources is less than the preset value, indicating that the first device cannot determine the appropriate first resource according to the first candidate resource, and the first device needs to determine the resource for sending the first data packet again; If the value is not set to zero, the number of first resources is less than the preset value, indicating that the number of first resources is not enough for the first device to retransmit the first data packet multiple times, and the first device still needs to re-determine the retransmission of the first data packet. resource. Therefore, this implementation is beneficial to the fact that when the number of the first resources is less than the preset value, the first device can determine the resource for sending the first data packet on the second candidate resource other than the first candidate resource in the selection window, so as to avoid the first The device can only re-determine the problem of excessive resource determination delay caused by transmission resources again according to the monitoring results of the first group of sensing windows at intervals of P _steps .

In another implementation manner, the first device determines the first resource from the first candidate resources, and determines the second resource from the second candidate resource, the second candidate resource is a resource other than the first candidate resource in the selection window, and the One resource is used for the initial transmission and/or retransmission of the first data packet, and the second resource is used for the retransmission of the first data packet. It can be seen that the first device may determine, from the first candidate resource and the second candidate resource, respectively, for initial transmission and/or retransmission of the first data packet and for retransmission of the first data packet.

In another implementation manner, the number of the first resources is less than the preset value, the first device determines the second resource from the second candidate resource, the second candidate resource is a resource other than the first candidate resource in the selection window, and the second resource is the second resource. It is used to determine the transmission resource during resource reselection; the first device determines the resource for sending the first data packet from the second resource. It can be seen that the first device determines the transmission resource for resource reselection from the resources other than the first candidate resource in the selection window, and determines the resource for sending the first data packet in the transmission resource for resource reselection.

In an implementation manner, the second resource is an unperceived resource that is closest to the first candidate resource in the second candidate resource, that is, the resource indicated after the first candidate resource as shown in FIG. 14 is the second resource.

In another implementation manner, the second resource is a resource excluding the occupied resource in the second candidate resource, and the occupied resource is the second resource determined by the first device based on the monitoring result of the first candidate resource and the reservation period. The reserved or occupied resources among the candidate resources. For example, the monitoring result of the first device based on the first candidate resource is that resource a in FIG. 16 is occupied, and after the reservation period of resource a has elapsed, a data packet is sent on resource b, that is, resource b is monitored based on the first candidate resource The reserved or occupied resources among the second candidate resources determined by the result and the reservation period, so that the second resources are resources excluding resource b in the second candidate resources.

It can be seen that, in this embodiment of the present application, in addition to determining the first resource according to the first candidate resource, the first device can also determine the second resource according to the second candidate resource, and the second candidate resource is in addition to the first candidate resource in the selection window. resource. Specifically, the first resource may be used for initial transmission and/or retransmission of the first data packet, and the second resource may be used for retransmission of the first data packet or a resource for resource reselection. It can be seen that this embodiment is beneficial to avoid the problem of excessive delay caused by the first device only determining the resources used for retransmission or the resources used for resource reselection according to the monitoring results of the first group of sensing windows at intervals of P _steps . .

In order to implement the functions in the methods provided by the above embodiments of the present application, the first device may include a hardware structure and/or software modules, and implement the above functions in the form of a hardware structure, a software module, or a hardware structure plus a software module. Whether one of the above functions is performed in the form of a hardware structure, a software module, or a hardware structure plus a software module depends on the specific application and design constraints of the technical solution.

As shown in FIG. 17 , an embodiment of the present application provides another communication apparatus 1700 . The communication apparatus 1700 may be a component of the first device (eg, an integrated circuit, a chip, etc.). The communication apparatus 1700 may also be other communication units, which are used to implement the methods in the method embodiments of the present application. The communication apparatus 1700 may include: a processing unit 1701 . Optionally, the transceiver unit 1702 and the storage unit 1703 may also be included.

In a possible design, one or more units as in FIG. 17 may be implemented by one or more processors, or by one or more processors and memory; or by one or more processors and a transceiver; or implemented by one or more processors, a memory, and a transceiver, which is not limited in this embodiment of the present application. The processor, memory, and transceiver can be set independently or integrated.

The communication apparatus 1700 has the function of implementing the first device described in the embodiments of the present application. For example, the communication apparatus 1700 includes modules or units or means (means) corresponding to the first device performing the steps involved in the first device described in the embodiments of the present application, and the functions or units or means (means) may be implemented by software, Alternatively, it may be implemented by hardware, or by executing corresponding software by hardware, or by a combination of software and hardware. For details, further reference may be made to the corresponding descriptions in the foregoing corresponding method embodiments.

In one possible design, a communication device 1700 may include:

The processing unit 1701 is configured to obtain resource occupancy information in the candidate resource set according to the monitoring results of M groups of perception windows, where the M groups of perception windows include a first group of perception windows and at least one second group of perception windows, the first group of perception windows. The window is different from the resources occupied by the second group of perception windows, wherein the M is a positive integer not less than 2;

The processing unit 1701 is further configured to determine, according to the resource occupation information, a first resource set from the candidate resource set, where the first resource set is a set of resources excluding occupied resources from the candidate resource set;

The processing unit 1701 is further configured to determine transmission resources from the first resource set.

In an implementation manner, the first group of sensing windows includes Ka candidate sensing sub-windows, and the candidate sensing sub-windows include at least Ya0 time slots, or the candidate sensing sub-windows include at most Ya1 time slots; where Ka is a positive integer, and Ya0 and Ya1 are positive integers.

In an implementation manner, Ya0 and/or Ya1 are configured by signaling, or preconfigured, or predefined.

In an implementation manner, the union of the Ka candidate perception sub-windows is a subset of the perception window; or, the Ka candidate perception sub-windows are a discontinuous group of Ka time slots in the time domain.

In an implementation manner, the processing unit 1701 further acquires first indication information, where the first indication information indicates a sensing sub-window used for monitoring among the Ka candidate sensing sub-windows.

In an implementation manner, the second group of sensing windows includes Kb candidate sensing sub-windows, and each candidate sensing sub-window includes at least Yb0 time slots, or each candidate sensing sub-window includes at most Yb1 time slots; wherein, Kb is Positive integers, Yb0 and Yb1 are positive integers.

In an implementation manner, the union of the Kb candidate perception sub-windows is a subset of the perception window; or, the Kb candidate perception sub-windows are Kb time slot groups that are discontinuous in the time domain.

In an implementation manner, the processing unit 1701 may further acquire second indication information, where the second indication information indicates a sensing sub-window used for sensing among the Kb candidate sensing sub-windows.

In one implementation, Ya0 and Yb0 are the same; and/or, Ya1 and Yb1 are the same; and/or Ka and Kb are the same; and/or, P _step1 and P _step2 are the same.

In an implementation manner, the processing unit 1701 determines the first resource set from the candidate resource set according to the resource occupation information, including: the processing unit 1701 according to the monitoring results in the first group of perception windows and the monitoring results in the second group of perception windows , determine the first resource set from the candidate resource set; or,

The processing unit 1701 determines the first resource occupation information in the candidate resource set according to the monitoring results in the first group of perception windows; the number of resources in the first resource set determined by the processing unit 1701 from the candidate resource set according to the first resource occupation information is less than the predetermined number. set value, the processing unit 1701 determines the second resource occupation information in the candidate resource set according to the monitoring results in the second group of perception windows; the processing unit 1701 determines the first resource set from the candidate resource set according to the second resource occupation information; or,

The processing unit 1701 determines a second resource set and a third resource set from the candidate resource set according to the monitoring results in the first group of perception windows and the monitoring results in the second group of perception windows, respectively, and the second resource set is used for the first data packet. The transmission resources of the initial transmission and/or retransmission, the third resource set is used to determine the transmission resources of the retransmission of the first data packet, and the second resource set and the third resource set are subsets of the first resource set; or,

The processing unit 1701 determines a second resource set and a third resource set from the candidate resource set according to the monitoring results in the first group of perception windows and the monitoring results in the second group of perception windows, respectively, and the second resource set is used for initializing data packets. transmission resources for transmission and/or retransmission, the third resource set is used to determine transmission resources during resource reselection, and the second resource set and the third resource set are subsets of the first resource set.

In an implementation manner, the processing unit 1701 determines the transmission resource from the first resource set, including: the first device determines the resource for sending the first data packet according to the first candidate resource; the first candidate resource is the first resource set associated with the first group. The resources of the Ka candidate perception sub-windows in the perception window, where Ka is a positive integer, and the Ka group of perception sub-windows occupies part of the time domain resources on the resource pool.

In an implementation manner, the processing unit 1701 determines the resource for sending the first data packet according to the first candidate resource, including: the processing unit 1701 determines the first resource on the first candidate resource according to the Ka candidate perception sub-windows; The first resource determines the resource for sending the first data packet.

In an implementation manner, the number of the first resources is less than the preset value, and the processing unit 1701 determines the resources for sending the first data packet on the second candidate resources, and the second candidate resources are resources other than the first candidate resources in the selection window. .

In an implementation manner, the processing unit 1701 determines the resource for sending the first data packet according to the first candidate resource, the processing unit 1701 determines the first resource from the first candidate resource, and determines the second resource from the second candidate resource, and the second The candidate resources are resources other than the first candidate resource in the selection window, the first resource is used for initial transmission and/or retransmission of the first data packet, and the second resource is used for the retransmission of the first data packet.

In an implementation manner, the number of the first resources is less than the preset value, and the processing unit 1701 determines the second resource from the second candidate resource, the second candidate resource is the resource other than the first candidate resource in the selection window, and the second resource uses When determining the transmission resource during resource reselection; the processing unit 1701 determines the resource for sending the first data packet from the second resource.

In an implementation manner, the second resource is an unperceived resource that is closest to the first candidate resource in the second candidate resource.

In an implementation manner, the second resource is a resource other than the occupied resource in the second candidate resource, and the occupied resource is the second candidate determined by the processing unit 1701 based on the monitoring result of the first candidate resource and the reservation period. A resource that is reserved or occupied in the resource.

In an implementation manner, the processing unit 1701 sends the first data packet from the transmission resource to implement communication between the first device and other devices.

In yet another possible design, a communication device 1700 may include:

The processing unit 1701 is configured to determine a first candidate resource, the first candidate resource is located in the resource selection window, and the first candidate resource is associated with K groups of perception sub-windows, where K is a positive integer, and the K groups of perception sub-windows The window occupies part of the time domain resources on the resource pool;

The processing unit 1701 is further configured to determine the resource for sending the first data packet according to the first candidate resource.

For an optional implementation manner of this embodiment of the present application, reference may be made to the related content described in the resource determination method 400 in the foregoing method embodiment. It will not be described in detail here.

In an implementation manner, K is a positive integer greater than 1, and the K groups of perception sub-windows include K equally-spaced perception sub-windows in the time domain; or, K is 1, and the K groups of perception sub-windows are one in the resource pool. Perceptual subwindows.

In an implementation manner, the processing unit 1701 determines the resource for sending the first data packet according to the first candidate resource, including: the processing unit 1701 determines the first resource on the first candidate resource according to the K groups of perception sub-windows, and the processing unit 1701 A resource determines the resource for sending the first data packet.

In an implementation manner, the processing unit 1701 determines the resource for sending the first data packet according to the first candidate resource, including: the processing unit 1701 determines the first resource from the first candidate resource, and determines the second resource from the second candidate resource, the first resource The second candidate resources are resources other than the first candidate resource in the selection window, the first resource is used for initial transmission and/or retransmission of the first data packet, and the second resource is used for the retransmission of the first data packet.

In an implementation manner, when the number of the first resources is less than the preset value, the processing unit 1701 selects the second resource from the second candidate resource, the second candidate resource is the resource other than the first candidate resource in the selection window, and the second resource is used for the second resource. Determine the transmission resource during resource reselection; the processing unit 1701 determines the resource for sending the first data packet from the second resource.

In an implementation manner, the second resource is a resource other than the occupied resource in the second candidate resource, and the occupied resource is the second resource determined by the first device based on the monitoring results of the K groups of perception sub-windows and the reservation period. The reserved or occupied resources among the candidate resources.

In an implementation manner, the processing unit 1701 acquires first configuration information, where the first configuration information indicates the quantity of the first candidate resource and the position of the first candidate resource.

In an implementation manner, the number and/or location of the first candidate resource corresponds to or is associated with a configured CBR threshold of the resource pool.

The value of the quantity of at least one first candidate resource corresponds to or is associated with at least one CBR threshold; and/or, the value of the position of at least one first candidate resource corresponds to at least one CBR threshold correspond or relate to.

In an implementation manner, the number and/or position of the first candidate resource corresponds to the corresponding value of the priority of the first data packet.

In an implementation manner, the quantity and/or position of the first candidate resource corresponds to or is associated with the corresponding value of the priority of the first data packet, including: the value of the quantity of the at least one first candidate resource is associated with the at least one value. The corresponding value of the priority of the first data packet corresponds to or is associated with; and/or, the value of the position of the at least one first candidate resource corresponds to or is associated with the corresponding value of the priority of the at least one first data packet.

The embodiments of the present application and the method embodiments shown in the above resource determination method 100 to resource determination method 400 are based on the same concept, and the technical effects brought by them are also the same. For specific principles, please refer to the implementation shown in the above resource determination method 100 to resource determination method 400 The description of the example is not repeated here.

FIG. 18 is a schematic structural diagram of a communication device. The communication apparatus 1800 may be a first device, a chip, a chip system, or a processor that supports the first device to implement the above method, or a chip, a chip system, or a processor that supports the first device to implement the above method. device, etc. The apparatus can be used to implement the methods described in the foregoing method embodiments, and for details, reference may be made to the descriptions in the foregoing method embodiments.

The communication apparatus 1800 may include one or more processors 1801 . The processor 1801 may be a general-purpose processor or a special-purpose processor, or the like. For example, it may be a baseband processor or a central processing unit. The baseband processor can be used to process communication protocols and communication data, and the central processing unit can be used to control communication devices (such as base stations, baseband chips, terminals, terminal chips, DU or CU, etc.), execute software programs, process software program data.

Optionally, the communication apparatus 1800 may include one or more memories 1802, and instructions 1804 may be stored thereon, and the instructions may be executed on the processor 1801, so that the communication apparatus 1800 executes the above method methods described in the examples. Optionally, the memory 1802 may also store data. The processor 1801 and the memory 1802 can be set separately or integrated together.

Optionally, the communication apparatus 1800 may further include a transceiver 1805 and an antenna 1806 . The transceiver 1805 may be referred to as a transceiver unit, a transceiver, or a transceiver circuit, etc., for implementing a transceiver function. The transceiver 1805 may include a receiver and a transmitter, the receiver may be called a receiver or a receiving circuit, etc., for implementing a receiving function; the transmitter may be called a transmitter or a transmitting circuit, etc., for implementing a transmitting function.

The communication apparatus 1800 is a first device: the processor 1801 is configured to perform S101 , S102 , and S103 in the resource determination method 100 ; and perform S401 and S402 in the resource determination method 400 .

In another possible design, the processor 1801 may include a transceiver for implementing the functions of receiving and transmitting. For example, the transceiver may be a transceiver circuit, or an interface, or an interface circuit. Transceiver circuits, interfaces or interface circuits used to implement receiving and transmitting functions may be separate or integrated. The above-mentioned transceiver circuit, interface or interface circuit can be used for reading and writing code/data, or the above-mentioned transceiver circuit, interface or interface circuit can be used for signal transmission or transmission.

In another possible design, optionally, the processor 1801 may store an instruction 1803, and the instruction 1803 runs on the processor 1801, so that the communication apparatus 1800 can execute the method described in the above method embodiments. The instructions 1803 may be hardened in the processor 1801, in which case the processor 1801 may be implemented by hardware.

In another possible design, the communication apparatus 1800 may include a circuit, and the circuit may implement the functions of sending or receiving or communicating in the foregoing method embodiments. The processors and transceivers described in the embodiments of the present application may be implemented in integrated circuits (ICs), analog ICs, radio frequency integrated circuits (RFICs), mixed-signal ICs, application specific integrated circuits (ASICs), printed circuits board (printed circuit board, PCB), electronic equipment, etc. The processor and transceiver can also be fabricated using various IC process technologies, such as complementary metal oxide semiconductor (CMOS), nMetal-oxide-semiconductor (NMOS), P-type Metal oxide semiconductor (positive channel metal oxide semiconductor, PMOS), bipolar junction transistor (Bipolar Junction Transistor, BJT), bipolar CMOS (BiCMOS), silicon germanium (SiGe), gallium arsenide (GaAs), etc.

The communication apparatus described in the above embodiments may be the first device, but the scope of the communication apparatus described in the embodiments of the present application is not limited thereto, and the structure of the communication apparatus may not be limited by FIG. 18 . The communication apparatus may be a stand-alone device or may be part of a larger device. For example, the communication means may be:

(1) Independent integrated circuit IC, or chip, or, chip system or subsystem;

(2) A set with one or more ICs, optionally, the IC set may also include a storage component for storing data and instructions;

(3) ASIC, such as modem (MSM);

(4) Modules that can be embedded in other equipment;

(5) Receivers, terminals, smart terminals, cellular phones, wireless devices, handsets, mobile units, vehicle-mounted devices, network devices, cloud devices, artificial intelligence devices, etc.;

(6) Others, etc.

For the case that the communication device may be a chip or a chip system, reference may be made to the schematic structural diagram of the chip shown in FIG. 18 . The chip 1900 shown in FIG. 19 includes a processor 1901 and an interface 1902 . The number of processors 1901 may be one or more, and the number of interfaces 1902 may be multiple.

In one design, for the case where the chip is used to implement the function of the first device in the embodiment of the present application:

The processor 1901 is configured to acquire resource occupancy information in the candidate resource set according to the monitoring results of M groups of perception windows, where the M groups of perception windows include a first group of perception windows and at least one second group of perception windows, the first group of perception windows. The resources occupied by the group of perception windows are different from those of the second group of perception windows, wherein the M is a positive integer not less than 2;

The processor 1901 is further configured to determine a first resource set from the candidate resource set according to the resource occupancy information, where the first resource set is the resource that excludes the occupied resources from the candidate resource set. gather;

The processor 1901 is further configured to determine transmission resources from the first resource set.

In another design, for the case where the chip is used to implement the function of the first device in the embodiment of the present application:

The processor 1901 is configured to determine a first candidate resource, the first candidate resource is located in the resource selection window, and the first candidate resource is associated with K groups of perception sub-windows, where K is a positive integer, and the K groups The perception sub-window occupies part of the time domain resources on the resource pool;

The processor 1901 is further configured to determine a resource for sending the first data packet according to the first candidate resource.

The communication apparatus 1800 and the chip 1900 in this embodiment of the present application may also execute the implementation manner described in the foregoing communication apparatus 1700 .

Those skilled in the art can also understand that various illustrative logical blocks (illustrative logical blocks) and steps (steps) listed in the embodiments of the present application may be implemented by electronic hardware, computer software, or a combination of the two. Whether such functionality is implemented in hardware or software depends on the specific application and overall system design requirements. Those skilled in the art may use various methods to implement the described functions for each specific application, but such implementation should not be construed as exceeding the protection scope of the embodiments of the present application.

The embodiments of the present application and the method embodiments shown in the resource determination method 100 to the resource determination method 400 are based on the same concept, and the technical effects brought by them are also the same. description, which is not repeated here.

It can be understood that, in some scenarios, some optional features in the embodiments of the present application can be implemented independently of other features, such as the solution currently based on them, to solve corresponding technical problems and achieve corresponding The effect can also be combined with other features according to requirements in some scenarios. Correspondingly, the communication device provided in the embodiment of the present application can also implement these features or functions correspondingly, which will not be repeated here.

Those skilled in the art can also understand that various illustrative logical blocks (illustrative logical blocks) and steps (steps) listed in the embodiments of the present application may be implemented by electronic hardware, computer software, or a combination of the two. Whether such functionality is implemented in hardware or software depends on the specific application and overall system design requirements.

It should be understood that the processor in this embodiment of the present application may be an integrated circuit chip, which has a signal processing capability. In the implementation process, each step of the above method embodiments may be completed by a hardware integrated logic circuit in a processor or an instruction in the form of software. The above-mentioned processor may be a general-purpose processor, a digital signal processor (DSP), an application specific integrated circuit (ASIC), a field programmable gate array (FPGA), or other possible Programming logic devices, discrete gate or transistor logic devices, discrete hardware components.

It can be understood that the memory in this embodiment of the present application may be a volatile memory or a non-volatile memory, or may include both volatile and non-volatile memory. The non-volatile memory may be read-only memory (ROM), programmable read-only memory (PROM), erasable programmable read-only memory (EPROM), electrically programmable Erase programmable read-only memory (electrically EPROM, EEPROM) or flash memory. Volatile memory may be random access memory (RAM), which acts as an external cache. By way of example and not limitation, many forms of RAM are available, such as static random access memory (SRAM), dynamic random access memory (DRAM), synchronous DRAM, SDRAM), double data rate synchronous dynamic random access memory (double data rate SDRAM, DDR SDRAM), enhanced synchronous dynamic random access memory (enhanced SDRAM, ESDRAM), synchronous link dynamic random access memory (synchlink DRAM, SLDRAM) ) and direct memory bus random access memory (direct rambus RAM, DR RAM). It should be noted that the memory of the systems and methods described herein is intended to include, but not be limited to, these and any other suitable types of memory.

The present application further provides a computer-readable medium for storing computer software instructions, and when the instructions are executed by the communication device, the functions of any of the foregoing method embodiments are implemented.

The present application also provides a computer program product for storing computer software instructions, and when the instructions are executed by the communication device, the functions of any of the foregoing method embodiments are implemented.

The above-mentioned embodiments may be implemented in whole or in part by software, hardware, firmware or any combination thereof. When implemented in software, it can be implemented in whole or in part in the form of a computer program product. The computer program product includes one or more computer instructions. When the computer instructions are loaded and executed on a computer, all or part of the processes or functions described in the embodiments of the present application are generated. The computer may be a general purpose computer, special purpose computer, computer network, or other programmable device. The computer instructions may be stored in or transmitted from one computer-readable storage medium to another computer-readable storage medium, for example, the computer instructions may be downloaded from a website site, computer, server, or data center Transmission to another website site, computer, server, or data center by wire (eg, coaxial cable, optical fiber, digital subscriber line, DSL) or wireless (eg, infrared, wireless, microwave, etc.). The computer-readable storage medium can be any available medium that can be accessed by a computer or a data storage device such as a server, a data center, or the like that includes an integration of one or more available media. The available media may be magnetic media (eg, floppy disks, hard disks, magnetic tapes), optical media (eg, high-density digital video discs (DVDs)), or semiconductor media (eg, solid state disks, SSD)) etc.

The above are only specific embodiments of the present application, but the protection scope of the present application is not limited to this. should be covered within the scope of protection of this application. Therefore, the protection scope of the present application should be subject to the protection scope of the claims.

Claims

A resource determination method, characterized in that the method comprises:

The first device obtains resource occupation information in the candidate resource set according to the monitoring results of M groups of perception windows, where the M groups of perception windows include a first group of perception windows and at least one second group of perception windows, the first group of perception windows and all The resources occupied by the second group of perception windows are different, wherein the M is a positive integer not less than 2;

The first device determines, according to the resource occupation information, a first resource set from the candidate resource set, where the first resource set is a set of resources excluding occupied resources from the candidate resource set;

The first device determines transmission resources from the first resource set.
The method according to claim 1, wherein the first group of sensing windows includes Ka candidate sensing sub-windows, the candidate sensing sub-windows include at least Ya0 time slots, or the candidate sensing sub-windows include at most Ya1 timeslots; wherein, the Ka is a positive integer, and the Ya0 and the Ya1 are positive integers.
The method according to claim 2, wherein the method further comprises:

The first device acquires first indication information, where the first indication information indicates a sensing sub-window used for monitoring among the Ka candidate sensing sub-windows.
The method according to any one of claims 1 to 3, wherein the second group of sensing windows includes Kb candidate sensing sub-windows, and each candidate sensing sub-window includes at least Yb0 time slots, or each The candidate sensing sub-windows include at most Yb1 time slots; wherein, the Kb is a positive integer, and the Yb0 and the Yb1 are positive integers.
The method according to claim 4, wherein the union of the Kb candidate perception sub-windows is a subset of perception windows; or, the Kb candidate perception sub-windows are Kb discontinuous in time domain time slot group.
The method according to claim 4 or 5, wherein the Kb candidate sensing sub-windows comprise a set of time slots distributed at a second interval P step2 in the time domain of Kb groups.
The method according to any one of claims 4 to 6, wherein the method further comprises:

The first device acquires second indication information, where the second indication information indicates a sensing sub-window used for sensing in the Kb candidate sensing sub-windows.
The method according to any one of claims 1 to 7, wherein the time domain resources occupied by the first group of perception windows and the second group of perception windows are different comprising:

The first group of perception windows and the second group of perception windows include different time slots; or,

The first set of sensing windows and the second set of sensing windows contain part or all of the same time slot, but contain all or part of the subchannels in the frequency domain that are different; or,

The first group of perception windows is located before the second group of perception windows in the time domain; or,

The starting position of the first group of perception windows in the time domain is located before the selection window, and the second group of perception windows is located within the selection window in the time domain.
The method according to any one of claims 1 to 8, wherein the second group of sensing windows is located between the first candidate sensing sub-window and Y candidate time slots; wherein the first candidate sensing sub-window The window belongs to the first group of sensing windows, and the interval between the first candidate sensing sub-window and the Y candidate time slots is the P step1 .
The method according to any one of claims 1 to 8, wherein a start position of the second group of sensing windows is located between the first candidate sensing sub-window and Y candidate time slots, and the second group of sensing windows is located between the first candidate sensing sub-window and the Y candidate time slots. The end position of the window is located in or after Y time slots; wherein, the first candidate perception sub-window belongs to the first group of perception windows, and the first candidate perception sub-window and the Y candidate time slots are between The interval is the P step1 .
The method according to any one of claims 1 to 10, wherein the first device determines the first resource set from the candidate resource set according to the resource occupation information, comprising:

The first device determines the first resource set from the candidate resource set according to the detection results in the first set of perception windows and the detection results in the second set of perception windows; or,

The first device determines the first resource occupation information in the candidate resource set according to the detection results in the first group of perception windows; the first device determines the first resource occupation information according to the first resource occupation information The number of resources in the resource set is less than a preset value, and the first device determines the second resource occupation information in the candidate resource set according to the detection results in the second set of perception windows; the first device occupies the second resource according to the second resource occupation information determines the first resource set from the candidate resource set; or,

The first device determines a second resource set and a third resource set from the candidate resource set according to the detection results in the first group of perception windows and the detection results in the second group of perception windows, respectively, and the second The resource set is used for transmission resources for initial transmission and/or retransmission of the first data packet, the third resource set is used for determining the transmission resources for retransmission of the first data packet, the second resource set and all the third resource set is a subset of the first resource set; or,

The first device determines a second resource set and a third resource set from the candidate resource set according to the detection results in the first group of perception windows and the detection results in the second group of perception windows, respectively, and the second The resource set is used for transmission resources for initial transmission and/or retransmission of data packets, the third resource set is used for determining transmission resources during resource reselection, and the second resource set and the third resource set are all describe a subset of the first resource set.
The method according to claim 1 or 2, wherein the determining, by the first device, the transmission resource from the first resource set comprises:

The first device determines the resource for sending the first data packet according to the first candidate resource;

The first candidate resource is a resource associated with Ka candidate perception sub-windows in the first group of perception windows in the first resource set, where the Ka is a positive integer, and the Ka group of perception sub-windows occupies resources Part of the time domain resource on the pool.
The method of claim 12, wherein:

The first device determines the resource for sending the first data packet according to the first candidate resource, including:

The first device determines a first resource on the first candidate resource according to the Ka candidate perception sub-windows;

The first device determines a resource for sending the first data packet according to the first resource.
The method of claim 13, wherein:

The quantity of the first resource is less than a preset value, and the method further includes:

The first device determines a resource for sending the first data packet on a second candidate resource, where the second candidate resource is a resource other than the first candidate resource in the selection window.
The method according to claim 13 or 14, wherein the first device determines the resource for sending the first data packet according to the first candidate resource, comprising:

the first device determines a first resource from the first candidate resources, and determines a second resource from a second candidate resource, where the second candidate resource is a resource other than the first candidate resource in the selection window, The first resource is used for initial transmission and/or retransmission of the first data packet, and the second resource is used for retransmission of the first data packet.
The method according to claim 13, wherein the quantity of the first resources is less than a preset value, and the method further comprises:

The first device determines a second resource from a second candidate resource, where the second candidate resource is a resource other than the first candidate resource in the selection window, and the second resource is used to determine transmission during resource reselection resource;

The first device determines the resource for sending the first data packet from the second resource.
A communication device, comprising:

A processing unit, configured to obtain resource occupancy information in the candidate resource set according to the monitoring results of M groups of perception windows, where the M groups of perception windows include a first group of perception windows and at least one second group of perception windows, the first group of perception windows Different from the resources occupied by the second group of perception windows, wherein the M is a positive integer not less than 2;

a processing unit, further configured to determine a first resource set from the candidate resource set according to the resource occupation information, where the first resource set is a set of resources excluding occupied resources from the candidate resource set;

The processing unit is further configured to determine transmission resources from the first resource set.
The communication device according to claim 17, wherein the first group of sensing windows includes Ka candidate sensing sub-windows, the candidate sensing sub-windows include at least Ya0 time slots, or the candidate sensing sub-windows include At most Ya1 time slots; wherein, the Ka is a positive integer, and the Ya0 and the Ya1 are positive integers.
The communication device according to claim 18, wherein the processing unit is further configured to acquire first indication information, wherein the first indication information indicates a perception sub-window used for monitoring in the Ka candidate perception sub-windows window.
The communication device according to any one of claims 17 to 19, wherein the second group of sensing windows includes Kb candidate sensing sub-windows, and each candidate sensing sub-window includes at least Yb0 time slots, or Each of the candidate sensing sub-windows includes at most Yb1 time slots; wherein, the Kb is a positive integer, and the Yb0 and the Yb1 are positive integers.
The communication device according to claim 20, wherein the union of the Kb candidate perception sub-windows is a subset of the perception window; or, the Kb candidate perception sub-windows are discontinuous Kb in time domain time slot group.
The communication apparatus according to claim 20 or 21, wherein the Kb candidate sensing sub-windows comprise a set of time slots distributed at a second interval P step2 in the time domain of Kb groups.
The communication device according to any one of claims 20 to 22, wherein the processing unit is further configured to acquire second indication information, wherein the second indication information indicates that the Kb candidate sensing sub-windows are used in Perceptual subwindows for perception.
The communication device according to any one of claims 17 to 23, wherein the time domain resources occupied by the first group of sensing windows and the second group of sensing windows are different including:

The first group of perception windows and the second group of perception windows include different time slots; or,

The first set of sensing windows and the second set of sensing windows contain part or all of the same time slot, but contain all or part of the subchannels in the frequency domain that are different; or,

The first group of perception windows is located before the second group of perception windows in the time domain; or,

The starting position of the first group of perception windows in the time domain is located before the selection window, and the second group of perception windows is located within the selection window in the time domain.
The communication device according to any one of claims 17 to 24, wherein a start position of the second group of sensing windows is located between the first candidate sensing sub-window and the Y candidate time slots, and the second group of sensing windows is located between the first candidate sensing sub-window and the Y candidate time slots. The end position of the sensing window is located in or after Y time slots; wherein, the first candidate sensing sub-window belongs to the first group of sensing windows, and the difference between the first candidate sensing sub-window and the Y candidate time slots is The interval between is the P step1 .
The communication device according to any one of claims 17 to 25, wherein the processing unit determines the first resource set from the candidate resource set according to the resource occupation information, comprising:

The processing unit determines the first resource set from the candidate resource set according to the detection results in the first group of perception windows and the detection results in the second group of perception windows; or,

The processing unit determines the first resource occupation information in the candidate resource set according to the detection results in the first set of perception windows; the processing unit determines the first resource set according to the first resource occupation information The number of resources in the candidate resource set is less than the preset value, the processing unit determines the second resource occupation information in the candidate resource set according to the detection results in the second group of perception windows; the processing unit determine the first resource set in the set; or,

The processing unit determines a second resource set and a third resource set from the candidate resource sets according to the detection results in the first group of perception windows and the detection results in the second group of perception windows, respectively. set of transmission resources used for the initial transmission and/or retransmission of the first data packet, the third resource set is used to determine the transmission resources of the retransmission of the first data packet, the second resource set and the The third resource set is a subset of the first resource set; or,

The processing unit determines a second resource set and a third resource set from the candidate resource sets according to the detection results in the first group of perception windows and the detection results in the second group of perception windows, respectively. A set of transmission resources used for initial transmission and/or retransmission of data packets, the third resource set is used to determine transmission resources during resource reselection, and the second resource set and the third resource set are the A subset of the first resource set.
The communication device according to claim 17 or 18, wherein the processing unit determines the transmission resource from the first resource set, comprising:

The processing unit determines the resource for sending the first data packet according to the first candidate resource;

The first candidate resource is a resource associated with Ka candidate perception sub-windows in the first group of perception windows in the first resource set, where the Ka is a positive integer, and the Ka group of perception sub-windows occupies resources Part of the time domain resource on the pool.
The communication device according to claim 27, wherein the processing unit determines the resource for sending the first data packet according to the first candidate resource, comprising:

The processing unit determines a first resource on the first candidate resource according to the Ka candidate perception sub-windows;

The processing unit determines the resource for sending the first data packet according to the first resource.
The communication device according to claim 28, wherein the number of the first resources is less than a preset value, the processing unit determines the resource for sending the first data packet on the second candidate resource, and the first resource The second candidate resources are resources other than the first candidate resources in the selection window.
A computer-readable storage medium storing instructions that, when executed, cause the method of any one of claims 1 to 16 to be implemented.