WO2023004635A1

WO2023004635A1 - Resource selection method and terminal device

Info

Publication number: WO2023004635A1
Application number: PCT/CN2021/108989
Authority: WO
Inventors: 马腾; 赵振山; 张世昌; 林晖闵; 丁伊
Original assignee: Oppo广东移动通信有限公司
Priority date: 2021-07-28
Filing date: 2021-07-28
Publication date: 2023-02-02
Also published as: CN117242861A

Abstract

Provided in the embodiments of the present application are a resource selection method and a terminal device. The method comprises: performing exclusion on resources in a resource selection window on the basis a first resource, so as to obtain a candidate resource set, wherein the first resource comprises a resource allocated and/or reserved for other information by a terminal device (S110); and selecting, from the candidate resource set, a resource of target data in a random-selection manner (S120). The method can be applied to a single carrier. Moreover, a resource exclusion link is added, such that a first resource, in which a collision occurs, can be excluded, thereby decreasing the collision probability of a randomly selected resource, and further improving the reliability of a random selection mechanism, and the system performance.

Description

Resource selection method and terminal equipment

technical field

The embodiment of the present application relates to the communication field, and more specifically, relates to a resource selection method and a terminal device.

Background technique

In the long term evolution (Long Term Evolution, LTE) vehicle to other equipment (Vehicle to Everything, V2X), the terminal device supports a multi-carrier-based resource selection mechanism, and the multi-carrier-based resource selection mechanism may include a random selection-based resource selection mechanism, For the resource selection mechanism of random selection, the terminal device first uses all the resources in the resource selection window as a set of candidate resources, and then randomly selects them according to equal probability, and finally the upper layer informs the physical layer of the selected resources, and the terminal device uses these resources Sidelink (SL) transmission is performed.

However, data transmission based on a single carrier is a typical data transmission method of a terminal device, and a resource selection mechanism based on random selection for multiple carriers is not suitable for a single carrier. In addition, for the randomly selected resource selection mechanism, when resources need to be frequently selected to send data, not only will a large number of sending resources be occupied/reserved, but also the probability of resource collisions will be increased, which will reduce system performance.

Therefore, there is an urgent need for a wireless communication method in the technical field, which can not only be applicable to a single carrier, but also can reduce the probability of resource collision and improve system performance.

Contents of the invention

Embodiments of the present application provide a resource selection method and a terminal device, which are not only applicable to a single carrier, but also can reduce resource collision probability, thereby improving reliability of a random selection mechanism and system performance.

In a first aspect, the present application provides a wireless communication method, including:

Excluding resources in the resource selection window based on the first resource to obtain a candidate resource set; the first resource includes resources allocated and/or reserved by the terminal device for other information;

In the set of candidate resources, a random selection method is used to select resources of the target data.

In a second aspect, the present application provides a terminal device configured to execute the method in the foregoing first aspect or its various implementation manners. Specifically, the terminal device includes a functional module configured to execute the method in the foregoing first aspect or its various implementation manners.

In an implementation manner, the terminal device may include a processing unit configured to perform functions related to information processing. For example, the processing unit may be a processor.

In an implementation manner, the terminal device may include a sending unit and/or a receiving unit. The sending unit is used to perform functions related to sending, and the receiving unit is used to perform functions related to receiving. For example, the sending unit may be a transmitter or transmitter, and the receiving unit may be a receiver or receiver. For another example, the terminal device is a communication chip, the sending unit may be an input circuit or interface of the communication chip, and the sending unit may be an output circuit or interface of the communication chip.

In a third aspect, the present application provides a terminal device, including a processor and a memory. The memory is used to store a computer program, and the processor is used to call and run the computer program stored in the memory, so as to execute the method in the above first aspect or each implementation manner thereof.

In an implementation manner, there are one or more processors, and one or more memories.

In an implementation manner, the memory may be integrated with the processor, or the memory may be separated from the processor.

In an implementation manner, the terminal device further includes a transmitter (transmitter) and a receiver (receiver).

In a fourth aspect, the present application provides a chip configured to implement the method in the above-mentioned first aspect or various implementation manners thereof. Specifically, the chip includes: a processor, configured to invoke and run a computer program from a memory, so that a device installed with the chip executes the method in the above first aspect or its various implementations.

In a fifth aspect, the present application provides a computer-readable storage medium for storing a computer program, and the computer program causes a computer to execute the method in the above-mentioned first aspect or various implementations thereof.

In a sixth aspect, the present application provides a computer program product, including computer program instructions, where the computer program instructions cause a computer to execute the method in the above first aspect or various implementations thereof.

In a seventh aspect, the present application provides a computer program, which, when run on a computer, causes the computer to execute the method in the above first aspect or its implementations.

Based on the above technical solution, the terminal device may exclude the resources in the resource selection window based on the first resource allocated and/or reserved by the terminal device for other information, to obtain a set of candidate resources; further, in the candidate resources The resources of the target data are selected randomly in the collection. It is not only applicable to a single carrier, but also reduces the collision probability of randomly selected resources by adding a resource exclusion link to exclude the conflicting first resource, thereby improving the reliability of the random selection mechanism and system performance.

Description of drawings

Figures 1 to 6 are examples of scenarios provided by the embodiments of the present application.

Fig. 7 is a schematic diagram of resource selection based on interception provided by an embodiment of the present application.

Fig. 8 is a schematic flowchart of a wireless communication method provided by the present application.

Figure 9 and Figure 10 are examples of the first resource provided by the embodiment of the present application.

FIG. 11 is a schematic block diagram of a terminal device provided by an embodiment of the present application.

Fig. 12 is a schematic block diagram of a communication device provided by an embodiment of the present application.

Fig. 13 is a schematic block diagram of a chip provided by an embodiment of the present application.

Detailed ways

The technical solution of the present application will be described below with reference to the accompanying drawings.

The embodiments of the present application may be applicable to any terminal device-to-terminal device communication framework. For example, Vehicle to Vehicle (V2V), Vehicle to Everything (V2X), Device to Device (D2D), etc. Wherein, the terminal device in this application may be any device or device configured with a physical layer and a media access control layer, and the terminal device may also be called an access terminal. For example, user equipment (User Equipment, UE), subscriber unit, subscriber station, mobile station, mobile station, remote station, remote terminal, mobile device, user terminal, terminal, wireless communication device, user agent or user device. The access terminal can be a cellular phone, a cordless phone, a Session Initiation Protocol (SIP) phone, a Wireless Local Loop (WLL) station, a Personal Digital Assistant (PDA), a wireless Handheld devices with communication capabilities, computing devices or other linear processing devices connected to wireless modems, in-vehicle devices, wearable devices, etc. The embodiment of the present invention is described by taking a vehicle-mounted terminal as an example, but it is not limited thereto.

The technical solution of the embodiment of the present application can be applied to various communication systems, such as: Global System of Mobile communication (Global System of Mobile communication, GSM) system, code division multiple access (Code Division Multiple Access, CDMA) system, broadband code division multiple access (Wideband Code Division Multiple Access, WCDMA) system, General Packet Radio Service (GPRS), Long Term Evolution (LTE) system, Advanced long term evolution (LTE-A) system , New Radio (NR) system, evolution system of NR system, LTE (LTE-based access to unlicensed spectrum, LTE-U) system on unlicensed spectrum, NR (NR-based access to unlicensed spectrum) on unlicensed spectrum unlicensed spectrum (NR-U) system, Non-Terrestrial Networks (NTN) system, Universal Mobile Telecommunications System (UMTS), Wireless Local Area Networks (WLAN), Wireless Fidelity (Wireless Fidelity, WiFi), fifth-generation communication (5th-Generation, 5G) system or other communication systems, etc.

Generally speaking, the number of connections supported by traditional communication systems is limited and easy to implement. However, with the development of communication technology, mobile communication systems will not only support traditional communication, but also support, for example, Device to Device (Device to Device, D2D) communication, Machine to Machine (M2M) communication, Machine Type Communication (MTC), Vehicle to Vehicle (V2V) communication, or Vehicle to everything (V2X) communication, etc. , the embodiments of the present application may also be applied to these communication systems.

Optionally, the communication system of the present application may be applied to a carrier aggregation (Carrier Aggregation, CA) scenario, may also be applied to a dual connectivity (Dual Connectivity, DC) scenario, and may also be applied to an independent (Standalone, SA) network deployment scenario.

Optionally, the communication system of the present application can be applied to unlicensed spectrum, wherein the unlicensed spectrum can also be considered as shared spectrum; or, the communication system of the present application can also be applied to licensed spectrum, wherein the licensed spectrum can also be considered as unlicensed spectrum Shared spectrum.

The embodiments of the present application describe various embodiments in conjunction with network equipment and terminal equipment, wherein the terminal equipment may also be referred to as user equipment (User Equipment, UE), access terminal, user unit, user station, mobile station, mobile station, remote station, remote terminal, mobile device, user terminal, terminal, wireless communication device, user agent or user device, etc.

The terminal device can be a station (STATION, ST) in a WLAN, a cellular phone, a cordless phone, a Session Initiation Protocol (Session Initiation Protocol, SIP) phone, a wireless local loop (Wireless Local Loop, WLL) station, a personal digital assistant (Personal Digital Assistant, PDA) devices, handheld devices with wireless communication functions, computing devices or other processing devices connected to wireless modems, vehicle-mounted devices, wearable devices, next-generation communication systems such as terminal devices in NR networks, or future Terminal equipment in the evolved public land mobile network (Public Land Mobile Network, PLMN) network, etc.

In this application, terminal equipment can be deployed on land, including indoor or outdoor, handheld, wearable or vehicle-mounted; it can also be deployed on water (such as ships, etc.); it can also be deployed in the air (such as on aircraft, balloons and satellites, etc.) .

In this application, the terminal device can be a mobile phone (Mobile Phone), a tablet computer (Pad), a computer with wireless transceiver function, a virtual reality (Virtual Reality, VR) terminal device, an augmented reality (Augmented Reality, AR) terminal device, an industrial Wireless terminal equipment in industrial control, wireless terminal equipment in self-driving, wireless terminal equipment in remote medical, wireless terminal equipment in smart grid, transportation Wireless terminal devices in transportation safety, wireless terminal devices in smart city or wireless terminal devices in smart home, etc.

As an example but not a limitation, in this application, the terminal device may also be a wearable device. Wearable devices can also be called wearable smart devices, which is a general term for the application of wearable technology to intelligently design daily wear and develop wearable devices, such as glasses, gloves, watches, clothing and shoes. A wearable device is a portable device that is worn directly on the body or integrated into the user's clothing or accessories. Wearable devices are not only a hardware device, but also achieve powerful functions through software support, data interaction, and cloud interaction. Generalized wearable smart devices include full-featured, large-sized, complete or partial functions without relying on smart phones, such as smart watches or smart glasses, etc., and only focus on a certain type of application functions, and need to cooperate with other devices such as smart phones Use, such as various smart bracelets and smart jewelry for physical sign monitoring.

In this application, the network device can be a device used to communicate with the mobile device, and the network device can be an access point (Access Point, AP) in WLAN, a base station (Base Transceiver Station, BTS) in GSM or CDMA, or It is a base station (NodeB, NB) in WCDMA, or an evolved base station (Evolutional Node B, eNB or eNodeB) in LTE, or a relay station or access point, or a network in a vehicle-mounted device, a wearable device, and an NR network Equipment or a base station (gNB) or network equipment in a future evolved PLMN network or network equipment in an NTN network.

As an example but not a limitation, in this application, the network device may have a mobile feature, for example, the network device may be a mobile device. Optionally, the network equipment may be a satellite or a balloon station. For example, the satellite can be a low earth orbit (low earth orbit, LEO) satellite, a medium earth orbit (medium earth orbit, MEO) satellite, a geosynchronous earth orbit (geosynchronous earth orbit, GEO) satellite, a high elliptical orbit (High Elliptical Orbit, HEO) satellite. ) Satellite etc. Optionally, the second device may also be a base station set up on land, in a water area, or other locations.

In this application, a network device may provide services for a cell, and a terminal device communicates with the network device through the transmission resources (for example, frequency domain resources, or spectrum resources) used by the cell, and the cell may be a network device (such as a base station) The corresponding cell, the cell can belong to the macro base station, or the base station corresponding to the small cell (Small cell), where the small cell can include: Metro cell, Micro cell, Pico cell , Femto cell, etc. These small cells have the characteristics of small coverage and low transmission power, and are suitable for providing high-speed data transmission services.

It should be understood that the terms "system" and "network" are often used interchangeably herein. The term "and/or" in this article is just an association relationship describing associated objects, which means that there can be three relationships, for example, A and/or B can mean: A exists alone, A and B exist simultaneously, and there exists alone B these three situations. In addition, the character "/" in this article generally indicates that the contextual objects are an "or" relationship.

The terms used in the embodiments of the present application are only used to explain specific embodiments of the present application, and are not intended to limit the present application. The terms "first", "second", "third" and "fourth" in the specification and claims of the present application and the drawings are used to distinguish different objects, rather than to describe a specific order . Furthermore, the terms "include" and "have", as well as any variations thereof, are intended to cover a non-exclusive inclusion.

It should be understood that the "indication" mentioned in the embodiments of the present application may be a direct indication, may also be an indirect indication, and may also mean that there is an association relationship. For example, A indicates B, which can mean that A directly indicates B, for example, B can be obtained through A; it can also indicate that A indirectly indicates B, for example, A indicates C, and B can be obtained through C; it can also indicate that there is an association between A and B relation.

In the description of the embodiments of the present application, the term "corresponding" may indicate that there is a direct or indirect correspondence between the two, or that there is an association between the two, or that it indicates and is indicated, configuration and is configuration etc.

In this application, "predefinition" can be realized by pre-saving corresponding codes, tables or other methods that can be used to indicate relevant information in devices (for example, including terminal devices and network devices). Do limited. For example, pre-defined may refer to defined in the protocol.

In this application, the "protocol" may refer to a standard protocol in the communication field, for example, it may include LTE protocol, NR protocol and related protocols applied in future communication systems, which is not limited in this application.

FIG. 1 to FIG. 4 are system frameworks from vehicle-mounted terminals to vehicle-mounted terminals provided by the present application.

As shown in Figure 1, in the network coverage inner line communication, all terminals (including terminal 1 and terminal 2) performing side line communication are within the coverage of the same network device, so all terminals can receive the Configure signaling to perform sidelink communication based on the same sidelink configuration.

As shown in Figure 2, in the case of partial network coverage for lateral communication, some terminals performing lateral communication are located within the coverage of network equipment, and these terminals (ie, terminal 1) can receive configuration signaling from network equipment, and Sidewalk communication is performed according to the configuration of the network device. The terminal outside the network coverage (i.e. terminal 2) cannot receive the configuration signaling of the network equipment. In this case, the terminal outside the network coverage will The sidelink configuration is determined by the information carried in the sidelink broadcast channel PSBCH sent by the internal terminal, and sidelink communication is performed.

As shown in Figure 3, for network coverage outer communication, all terminals (including terminal 1 and terminal 2) performing side communication are located outside the network coverage, and all terminals determine the side configuration according to the pre-configuration information to perform side communication .

Device-to-device communication is a sidelink (Sidelink, SL) transmission technology based on D2D, which is different from the way communication data is received or sent by network devices in traditional cellular systems, so it has higher spectral efficiency and lower transmission delay. The Internet of Vehicles system adopts the method of terminal-to-terminal direct communication, and two transmission modes are defined in 3GPP: the first mode and the second mode.

First mode:

The transmission resources of the terminal are allocated by the network equipment, and the terminal sends data on the sidelink according to the resources allocated by the network equipment; the network equipment can allocate resources for a single transmission to the terminal, and can also allocate semi-static transmission resources for the terminal resource. As shown in FIG. 1 , the terminal is located within the coverage of the network, and the network allocates transmission resources for sidelink transmission to the terminal.

Second mode:

The terminal selects a resource from the resource pool for data transmission. As shown in Figure 3, the terminal is located outside the coverage area of the cell, and the terminal independently selects transmission resources from the pre-configured resource pool for sidelink transmission; or as shown in Figure 1, the terminal independently selects transmission resources for sidelink transmission from the resource pool configured by the network transmission.

Second mode resource selection is performed in the following two steps:

step 1:

The terminal takes all available resources in the resource selection window as resource set A.

If the terminal sends data in some time slots in the listening window but does not listen, all resources of these time slots in the corresponding time slots in the selection window are excluded. The terminal uses the value set of the "resource reservation period" field in the resource pool configuration used to determine the corresponding time slot in the selection window.

If the terminal detects the PSCCH within the listening window, measure the RSRP of the PSCCH or the RSRP of the PSSCH scheduled by the PSCCH, if the measured RSRP is greater than the SL-RSRP threshold, and according to the resources in the sideline control information transmitted in the PSCCH If the reservation information determines that the reserved resource is within the resource selection window, then the corresponding resource is excluded from the set A. If the remaining resources in resource set A are less than X% of all resources in resource set A before resource exclusion, raise the SL-RSRP threshold by 3dB and perform step 1 again. The above possible values of X are {20, 35, 50}, and the terminal determines the parameter X from the value set according to the priority of the data to be sent. At the same time, the above SL-RSRP threshold is related to the priority carried in the PSCCH sensed by the terminal and the priority of the data to be sent by the terminal. The terminal device uses the remaining resources after excluding some resources in the set A as the candidate resource set.

Step 2:

The terminal randomly selects several resources from the candidate resource set as sending resources for its initial transmission and retransmission.

In NR-V2X, autonomous driving needs to be supported, so higher requirements are placed on data interaction between vehicles, such as higher throughput, lower latency, higher reliability, greater coverage, More flexible resource allocation, etc.

In LTE-V2X, broadcast transmission is supported, and in NR-V2X, unicast and multicast transmission are introduced. For unicast transmission, there is only one terminal at the receiving end. Fig. 4 is a schematic diagram of unicast transmission provided by this application. As shown in FIG. 4 , unicast transmission is performed between terminal 1 and terminal 2 . For multicast transmission, its receivers are all terminals in a communication group, or all terminals within a certain transmission distance. Fig. 5 is a schematic diagram of multicast transmission provided by this application. As shown in FIG. 5 , terminal 1, terminal 2, terminal 3 and terminal 4 form a communication group, wherein terminal 1 sends data, and other terminal devices in the group are receiver terminals. For the broadcast transmission mode, the receiving end is any terminal around the sending end terminal. Fig. 6 is a schematic diagram of broadcast transmission provided by the present application. As shown in FIG. 6 , terminal 1 is a transmitting terminal, and other terminals around it, terminal 2 to terminal 6 are all receiving terminals.

For a better understanding of the embodiments of the present application, the method for selecting resources based on interception related to the present application will be described below.

In LTE-V2X, full listening or partial listening is supported, wherein, full listening means that the terminal device can listen to data sent by other terminals in all time slots (or subframes) except the time slot for sending data; Partial sensing (partial sensing) is for energy saving of the terminal. The terminal only needs to sense part of the time slot (or subframe), and selects resources based on the result of partial sensing.

Specifically, when the upper layer does not configure partial interception, it defaults to full interception for resource selection.

Fig. 7 is a schematic diagram of resource selection based on interception provided by the present application.

As shown in Fig. 7, at time n, the terminal device will select resources within [n+T1, n+T2] according to the interception result in the interception window [n-1000, n-1]. The time unit of the listening window and the selection window is at least one of the following: millisecond, time slot, and subframe.

The time n includes at least one of the following: the time when resource selection is triggered, the time when resource reselection is triggered, the time when the upper layer triggers the lower layer to report resources, and the time when a new data packet arrives.

The above multiple times may be the same time, for example, the time when resource selection is triggered is also the time when a new data packet arrives; the time when resource reselection is triggered is also the time when a new data packet arrives; the time when resource selection is triggered, At the same time, it is also the moment when the upper layer triggers the lower layer to report resources.

Where T ₁ <= 4; T _2min (prio _TX ) ≤ T ₂ ≤ 100, T _2min (prio _TX ) is a parameter configured by the upper layer, and the selection of T ₁ should be greater than the processing delay of the terminal equipment, and the selection of T ₂ requires Within the range of service delay requirements, for example, if the service delay requirement is 50ms, then 20≤T ₂ ≤50, and the service delay requirement is 100ms, then 20≤T ₂ ≤100.

The process of terminal equipment selecting resources in the selection window is as follows:

1. The terminal device will select all available resources in the window as a set A.

2. If the terminal device has no listening result for some subframes in the listening window, the resources of these subframes in the corresponding subframes in the selection window are excluded.

3. If the terminal device detects a Physical Sidelink Control Channel (PSCCH) within the listening window, measure the reference signal received power ( Reference Signal Received Power, RSRP), if the measured PSSCH-RSRP is higher than the PSSCH-RSRP threshold, and there is a resource conflict between the reserved transmission resources determined by the reserved information in the control information and the data to be sent by the user, the user Exclude the resource from set A. The selection of the PSSCH-RSRP threshold is determined by the detected priority information carried in the PSCCH and the priority of the data to be transmitted by the terminal.

4. If the number of remaining resources in set A is less than 20% of the total number of resources, the terminal device will increase the threshold of PSSCH-RSRP by 3dB, and repeat steps 1-3 until the number of remaining resources in set A is greater than the total number of resources 20% of.

5. The terminal device performs sidelink received signal strength indicator (Sidelink Received Signal Strength Indicator, SL RSSI) detection on the remaining resources in set A, and sorts them according to the energy level, and sorts the 20% with the lowest energy (relative to the resources in set A) Number of resources) Resources are put into collection B.

6. The terminal selects a resource from set B with a medium probability for data transmission.

Compared with the method of complete interception, the terminal device based on partial interception selects Y time slots in the resource selection window, and judges whether the resources on the Y time slots can be used as candidate resources according to the interception results, and if so, put them in In the set S _B , if the number of elements in the set S _B is greater than or equal to 20% of the total number of resources on Y time slots, report S _B to the upper layer.

It should be noted that, the specific resource selection process can refer to the operation steps described in the standard (3GPP TS36.213), and the above only exemplifies several main resource selection steps.

Certainly, the terminal device may also perform resource selection based on a randomly selected resource selection method.

Specifically, when the high-level configuration is based on random selection for resource selection on multiple carriers, refer to the standard (TS 36.213) for the physical layer process, refer to the standard (TS 36.331) for the RRC layer process, and refer to the MAC layer process. Standard (TS 36.321), this application does not specify this.

In LTE V2X, single-carrier-based transmission is a typical transmission method, while the physical layer protocol (14.1.1.6 TS36.213) only includes random selection content based on multi-carrier, and does not include random selection based on single-carrier physical layer process. For the random selection based on multi-carrier, the physical layer does not include the process of resource exclusion, and the physical layer does not have the step of reporting the candidate resource set to the upper layer. That is, all the resources in the resource pool are used as candidate resources, randomly selected according to equal probability, and then the high layer notifies the physical layer of the selected resources, and the terminal device uses the notified resources to send the sidelink (SL).

In NR V2X and SL enhancements, the random selection mechanism is also supported, and it has not been discussed/disclosed whether it is necessary to add the two steps/links of resource exclusion and remaining resource reporting.

However, when there are other terminal devices in this resource pool, or the terminal device itself needs to send other business data at the same time, it will potentially cause a resource collision between the resources randomly selected by the terminal device and its own transmission or the transmission of other terminal devices. This results in failure to send data. When the business volume of terminal equipment increases and resources need to be frequently selected to send data, a large number of sending resources will be occupied/reserved. For the random selection mechanism, since there is no resource exclusion measure, the frequency of resource collisions is high, and the performance of the system will be reduced. Significantly decreased.

Based on this, the embodiments of the present application provide a resource selection method and a terminal device, which are not only applicable to a single carrier, but also can reduce the probability of resource collision, thereby improving the reliability of the random selection mechanism and system performance.

Fig. 8 is a schematic flowchart of a wireless communication method 200 provided by an embodiment of the present application, and the method 200 may be executed by a terminal device. It can also be the sender for sending data. For example, the terminal device may be the terminal B mentioned above, and the terminal device may be the terminal A mentioned above.

As shown in FIG. 8, the method 100 may include part or all of the following:

S110, excluding resources in the resource selection window based on the first resource to obtain a candidate resource set; the first resource includes resources allocated and/or reserved by the terminal device for other information;

S120. Select a resource of the target data in a random selection manner in the candidate resource set.

In other words, when the terminal device selects transmission resources in a random selection manner in the resource pool, it needs to exclude some resources from the candidate resources. The excluded resources include resources that the terminal device itself has allocated and/or reserved for other information. resource.

Exemplarily, the terminal device may form a set A with all resources in the resource selection window. The set A may be expressed as (a0, a1, a2, ..., ax), where ax represents a time slot (slot) resource; based on this, the terminal device may allocate and/or transmit other information based on the terminal device For the reserved first resource, resources in the set A are excluded to obtain a candidate resource set.

Optionally, the other information may include data and/or information on the sidelink, and may also include data and/or information on the uplink.

In this embodiment, the terminal device may exclude resources in the resource selection window based on the first resource allocated and/or reserved by the terminal device for other information, to obtain a set of candidate resources; furthermore, in the candidate resources The resources of the target data are selected randomly in the collection. It is not only applicable to a single carrier, but also reduces the collision probability of randomly selected resources by adding a resource exclusion link to exclude the conflicting first resource, thereby improving the reliability of the random selection mechanism and system performance.

Optionally, the terminal device determines whether to use a random selection method for resource selection, and when determining to use a random selection method for resource selection, excludes resources in the resource selection window based on the first resource, and then obtains the A collection of candidate resources.

It should be noted that this application does not limit the triggering manner of whether the terminal device "determines whether to use random selection to select resources". As an example, "determine whether to use random selection for resource selection" may be triggered by the terminal device. For example, "determine whether to use a random selection method for resource selection" may be configured or indicated by a high layer of the terminal device. As another example, "determine whether to use random selection for resource selection" may also be triggered by other events. For example, when a certain event is sent or a certain condition is met, the terminal device is triggered to select resources available for target data of the terminal device within a resource selection window in a random selection manner.

In addition, the first resource mentioned in this application may refer to any resource that has been occupied or selected but has not been used to transmit data or information. For example, the term "reservation" involved in this application may refer to resource reservation for periodically sending data, or reservation of retransmission resources. For another example, the term "allocation" involved in this application may refer to the initial transmission of a single transmission, such as the initial transmission resources allocated for the initial transmission of PSCCH/PSSCH, PUCCH/PUSCH, which have been selected by the upper layer of the terminal device And told the physical layer, but there is no data sent at the current moment. For another example, the first resource may be a resource where a resource conflict will occur when the target data is sent on the first resource.

In some embodiments, the other data includes uplink information; wherein, the S110 may include:

The candidate resource set is obtained by excluding resources overlapping with the first resource within the resource selection window.

In other words, if the first resource allocated and/or reserved by the terminal device for sending other information is an uplink resource, the terminal device obtains the resource by excluding resources overlapping with the uplink resource in the resource selection window. The set of candidate resources described above.

Optionally, the subcarrier spacing corresponding to the first resource is different from the subcarrier spacing corresponding to the resources in the resource selection window.

Optionally, the uplink information includes at least one of the following:

Physical Uplink Control Channel (PUCCH), Physical Uplink Shared Channel (PUSCH), Channel State Information (CSI), Physical Random Access Channel (PRACH) , Uu feedback information carried by the PUCCH or Uu feedback information carried by the PUSCH, sidelink feedback information carried by the PUCCH or sidelink feedback information carried by the PUSCH.

It should be noted that, in some cases, for example, for a terminal device adopting the mode 1 resource allocation mode, the terminal device may be allowed to report PSFCH feedback information on the sidelink (Sidelink) to the network device. Correspondingly, the uplink information may include sidelink feedback information carried by the PUCCH or sidelink feedback information carried by the PUSCH.

In some embodiments, the other data includes sideline control information SCI and/or sideline data.

Optionally, the first resources include: unused resources delivered to the physical layer, and/or resources indicated in sent sidelink control information (Sidelink Control Information, SCI). Optionally, the time slot where the resource indicated by the SCI is the same as or different from the time slot where the SCI is located.

In other words, the first resource may include an unused resource delivered to the physical layer by a high layer of the terminal device, and/or the first resource includes the resource indicated by the terminal device in the sent SCI. resources already occupied by the terminal device. Optionally, the resources already occupied by the terminal device indicated in the SCI by the terminal device may be unused resources, that is, not yet used for sending SCI and/or sidelink data.

In some embodiments, the first resource is located within the resource selection window; wherein, the S110 may include:

The candidate resource set is obtained by excluding the first resource in the resource selection window.

In other words, if the first resource is located in the resource selection window, the terminal device may directly exclude the first resource in the resource selection window, so as to obtain the candidate resource set.

Optionally, the first resource is an aperiodic resource.

In other words, if the aperiodic first resource is included in the resource selection window, the terminal device may directly exclude the first resource in the resource selection window to obtain the candidate resource set.

Optionally, the first resource is a periodic resource, and the periodic resource includes at least one resource within the resource selection window.

In other words, the first resource in the resource selection window includes at least one periodic resource, and the terminal device may directly exclude the at least one periodic resource in the resource selection window to obtain the A collection of candidate resources.

In some embodiments, the first resource is located outside the resource selection window; wherein, the S110 may include:

The candidate resource set is obtained by excluding a second resource within the resource selection window; wherein the second resource is a resource determined based on the first resource and located within the resource selection window.

Optionally, the first resource is a periodic resource, and there is no resource in the periodic resource within the resource selection window.

Optionally, the second resources include resources within the selection window that are distributed according to a sending cycle of the target data with the first resource after the selection window as a reference point.

In other words, if the first resource is located outside the resource selection window, the terminal device may exclude the transmission cycle of the target data within the resource selection window and take the first resource as a reference point distributed resources to obtain the set of candidate resources.

Optionally, the method 100 may also include:

The second resource is determined based on the location of the first resource and the sending period of the target data.

Optionally, the second resource is determined in the following manner:

T2=T1-n×T;

Wherein, T2 represents the position of the second resource, T1 represents the position of the first resource, and T represents the sending cycle of the target data.

In some embodiments, the first resource includes a retransmission resource for the sidelink data located within the resource selection window; wherein, the S110 may include:

The candidate resource set is obtained by excluding the retransmission resources in the resource selection window.

In other words, the terminal device obtains the candidate resource set by excluding retransmission resources for sidelink data within the resource selection window.

Optionally, the information used to indicate the retransmission resource is carried in the sent SCI.

In some embodiments, the side line control information SCI and/or side line data include at least one of the following:

Feedback information carried by Physical Sidelink Shared Channel (PSSCH), Physical Sidelink Control Channel (PSCCH), Physical Sidelink Feedback Channel (PSFCH) or PSFCH.

In some embodiments, the method 100 may also include:

Reporting the resource set formed by the remaining resources in the resource selection window.

In other words, the terminal device may exclude resources in the resource selection window based on the first resource allocated and/or reserved by the terminal device for sending other information, to obtain a candidate resource set; furthermore, in the candidate resource set The resources of the target data are selected in a random selection manner; then, the resource set formed by the remaining resources in the resource selection window is reported. For example, the resource set formed by the remaining resources in the resource selection window may be reported to the high layer through the physical layer, so that the high layer can perform resource selection in the resource set formed by the reported remaining resources.

Exemplarily, the terminal device reports the resource set formed by the remaining resources in the resource selection window to the high layer, so that the high layer randomly selects a resource, such as a time slot, from the reported resource set.

For example, the terminal device may select a time slot resource for a single transmission based on the reported resource set.

For another example, the terminal device may select two time slot resources for initial transmission and potential retransmission based on the reported resource set. The potential retransmission may be retransmission based on HARQ feedback.

For another example, the terminal device may select 3 time slot resources for initial transmission and potential multiple retransmissions based on the reported resource set. The multiple retransmissions may be retransmissions based on HARQ feedback.

In some embodiments, the S120 may include:

In the set of candidate resources, a random selection method is used to select resources for new transmission resources and/or retransmission resources of the target data.

In other words, for the new transmission resources and/or retransmission resources of the target data, the terminal device may select resources in the candidate resource set in a random selection manner.

Based on the above solution, for the random selection method, this application eliminates the conflicting first resource by adding a resource exclusion link, which reduces the collision probability of randomly selected resources, thereby improving the reliability of the random selection mechanism and system performance. . The solution provided by the present application will be described below in combination with specific embodiments.

Example 1:

In this embodiment, the terminal device can form a set A of all resources in the resource selection window, which can be expressed as (a0, a1, a2, ..., ax), where ax represents a time slot (slot) resource; based on this , the terminal device may exclude resources in the set A based on the first resource allocated and/or reserved by the terminal device for sending other information, to obtain a candidate resource set. Wherein, the other data includes uplink information.

Fig. 9 is an example of the first resource provided by the embodiment of the present application.

As shown in FIG. 9 , the terminal device is about to send uplink information on the Uu carrier. Since the time domain resource of the uplink information overlaps with set A with time slot a5, time slot a5 needs to be removed from set A.

Optionally, the uplink information includes but not limited to Uu feedback information carried by PUCCH, PUSCH, CSI, PRACH, PUCCH/PUSCH or corresponding PSFCH feedback information on SL.

Optionally, when the subcarrier spacings of the uplink (UL) and SL are different, that is, when the subcarrier spacing corresponding to the first resource is different from the subcarrier spacing corresponding to the resources in the resource selection window, the The first resource and the resources in the resource selection window may partially overlap, and accordingly, the overlapping parts of the first resource and the resources in the resource selection window in the time domain need to be removed from set A . For example, the time slot of the first resource is 1 ms, the time slot of the resources in the resource selection window is 0.5 ms, and the first resource and the resources in the resource selection window may partially overlap.

Example 2:

In this embodiment, the terminal device can form a set A of all resources in the resource selection window, which can be expressed as (a0, a1, a2, ..., ax), where ax represents a time slot (slot) resource; based on this , the terminal device may exclude resources in the set A based on the first resource allocated and/or reserved by the terminal device for sending other information, to obtain a candidate resource set. Wherein, the first resource is an aperiodic resource within the resource selection window, such as an initial transmission resource.

As shown in FIG. 9, the terminal device is about to send sidelink control information and/or sidelink data on the aperiodic sidelink resource. Since the time slot resource a3 where the aperiodic sidelink resource is located belongs to resource set A, it needs to start from The time slot resource a3 is removed from set A.

Optionally, the time slot resource a3 may be determined as an SL resource to be used by the terminal device to send sidelink control information and/or sidelink data in the following manner:

1. The upper layer has selected the time slot resource a3 and delivered the information to the physical layer, but the time slot resource a3 has not been used; or

2. The terminal device has indicated in the sent SCI that the time slot resource a3 is an occupied resource, and the SCI indicates this time slot or a different time slot.

Example 3:

In this embodiment, the terminal device can form a set A of all resources in the resource selection window, which can be expressed as (a0, a1, a2, ..., ax), where ax represents a time slot (slot) resource; based on this , the terminal device may exclude resources in the set A based on the first resource allocated and/or reserved by the terminal device for sending other information, to obtain a candidate resource set. Wherein, the first resource is located in the resource selection window and is included as a periodic resource.

As shown in Figure 9, the terminal device sends sidelink control information and/or sidelink data on the sidelink (SL) resources based on the period P2. According to the calculation of the current transmission time slot and period, due to the two The two time slots a1 and a8 where the SL resources based on the period P2 belong to the resource set A, therefore, the time slot resources a1 and a8 need to be removed from the set A.

Optionally, the time slot resources a1 and a8 may be determined as SL resources to be used by the terminal device for sending sidelink control information and/or sidelink data in the following manner:

1. The upper layer has selected the time slot resources a1 and a8 and delivered the information to the physical layer, but the time slot resources a1 and a8 have not been used; or

2. The terminal device has indicated in the sent SCI that the time slot resources a1 and a8 are occupied resources, and the SCI indicates this time slot or a different time slot.

Example 4:

In this embodiment, the terminal device can form a set A of all resources in the resource selection window, which can be expressed as (a0, a1, a2, ..., ax), where ax represents a time slot (slot) resource; based on this , the terminal device may exclude resources in the set A based on the first resource allocated and/or reserved by the terminal device for sending other information, to obtain a candidate resource set. Wherein, the first resource is located outside the resource selection window, at this time, the terminal device may exclude the second resource in the set A determined based on the first resource.

As shown in Figure 9, the terminal device sends sidelink control information and/or sidelink data on the sidelink (SL) resource based on the period P1, if the terminal device selects the resource on the a9 time slot in the resource selection window , and assume that the sending period of the target data is P3, that is, the resources of the target data are reserved according to the period P3; Time slot a9 is removed from A.

Optionally, through the position of the first resource and the transmission cycle of the target data, the second resource can be obtained as b1-n*P3, that is, the slot a9; where b1 is the position of the first resource that transmits the conflict, and n is Integer, and n≥0. Optionally, the resource where b0 resides may be an initial transmission resource.

Example 5:

In this embodiment, the terminal device can form a set A of all resources in the resource selection window, which can be expressed as (a0, a1, a2, ..., ax), where ax represents a time slot (slot) resource; based on this , the terminal device may exclude resources in the set A based on the first resource allocated and/or reserved by the terminal device for sending other information, to obtain a candidate resource set. Wherein, the first resource includes a retransmission resource for the sidelink data located within the resource selection window.

Fig. 10 is another example of the first resource provided by the embodiment of the present application.

As shown in Figure 10, the terminal device indicates in the sent SCI that the potential retransmission resource of TB1 has been reserved, the SL resource for the initial transmission of TB1 is used to transmit the initial transmission of TB1, and the SCI of the initial transmission of TB1 indicates two additional TB1 retransmission resources. For example, if the time slots of the two TB1 retransmitted SL resources are time slots a1 and a3, then time slots a1 and a3 need to be removed from the set A.

It should be noted that FIG. 9 and FIG. 10 are only examples of the present application, and should not be construed as limiting the present application.

For example, in the above-mentioned embodiments, the overlapping of time-domain resources is not limited to: complete overlapping of time slots, overlapping of partial symbols in a time slot, or inclusion of smaller time slots in a larger time slot.

The preferred embodiments of the present application have been described in detail above in conjunction with the accompanying drawings. However, the present application is not limited to the specific details in the above embodiments. Within the scope of the technical concept of the present application, various simple modifications can be made to the technical solutions of the present application. These simple modifications all belong to the protection scope of the present application. For example, the various specific technical features described in the above specific implementation manners can be combined in any suitable manner if there is no contradiction. Separately. As another example, any combination of various implementations of the present application can also be made, as long as they do not violate the idea of the present application, they should also be regarded as the content disclosed in the present application.

It should also be understood that in the various method embodiments of the present application, the sequence numbers of the above-mentioned processes do not mean the order of execution, and the order of execution of the processes should be determined by their functions and internal logic, and should not be used in this application. The implementation of the examples constitutes no limitation. In addition, in this embodiment of the application, the terms "downlink" and "uplink" are used to indicate the transmission direction of signals or data, wherein "downlink" is used to indicate that the transmission direction of signals or data is from the station to the user equipment in the cell For the first direction, "uplink" is used to indicate that the signal or data transmission direction is the second direction from the user equipment in the cell to the station, for example, "downlink signal" indicates that the signal transmission direction is the first direction. In addition, in the embodiment of the present application, the term "and/or" is only an association relationship describing associated objects, indicating that there may be three relationships. Specifically, A and/or B may mean: A exists alone, A and B exist simultaneously, and B exists alone. In addition, the character "/" in this article generally indicates that the contextual objects are an "or" relationship.

The method embodiment of the present application is described in detail above with reference to FIG. 8 to FIG. 10 , and the device embodiment of the present application is described in detail below in conjunction with FIG. 11 to FIG. 13 .

Fig. 11 is a schematic block diagram of a terminal device 200 according to an embodiment of the present application.

As shown in FIG. 11, the terminal device 200 may include:

The exclusion unit 210 is configured to exclude resources in the resource selection window based on the first resource to obtain a candidate resource set; the first resource includes resources allocated and/or reserved by the terminal device for other information;

The selection unit 220 is configured to select resources of target data in a random selection manner in the candidate resource set.

In some embodiments, the other data includes uplink information;

Wherein, the exclusion unit 210 is specifically used for:

In some embodiments, the subcarrier spacing corresponding to the first resource is different from the subcarrier spacing corresponding to the resources in the resource selection window.

In some embodiments, the uplink information includes at least one of the following:

Physical uplink control channel PUCCH, physical uplink shared channel PUSCH, channel state information CSI, physical random access channel PRACH, Uu feedback information carried by PUCCH or Uu feedback information carried by PUSCH, sidelink feedback information carried by PUCCH or sidelink information carried by PUSCH Line feedback information.

In some embodiments, the first resources include: unused resources delivered to the physical layer, and/or resources indicated in the sent sideline control information SCI.

In some embodiments, the time slot in which the resource indicated by the SCI is located is the same as or different from the time slot in which the SCI is located.

In some embodiments, the first resource is located within the resource selection window;

Wherein, the exclusion unit 210 is specifically used for:

In some embodiments, the first resource is an aperiodic resource.

In some embodiments, the first resource is a periodic resource, and the periodic resource includes at least one resource within the resource selection window.

In some embodiments, said first resource is located outside said resource selection window;

Wherein, the exclusion unit 210 is specifically used for:

Obtaining the candidate resource set by excluding a second resource in the resource selection window;

Wherein, the second resource is a resource determined based on the first resource and located within the resource selection window.

In some embodiments, the first resource is a periodic resource, and there is no resource in the periodic resource within the resource selection window.

In some embodiments, the second resource includes resources within the selection window that are distributed according to the sending period of the target data with the first resource after the selection window as a reference point.

In some embodiments, the exclusion unit 210 is also used for:

In some embodiments, the exclusion unit 210 is specifically used for:

The second resource is determined by:

T2=T1-n×T;

In some embodiments, the first resource includes a retransmission resource for the sidelink data located within the resource selection window;

Wherein, the exclusion unit 210 is specifically used for:

In some embodiments, the information used to indicate the retransmission resource is carried in the sent sideline control information SCI.

The physical sidelink shared channel PSSCH, the physical sidelink control channel PSCCH, the physical sidelink feedback channel PSFCH, or the feedback information carried by the PSFCH.

In some embodiments, the selection unit 220 is also used for:

In some embodiments, the selection unit 220 is specifically used to:

It should be understood that the device embodiment and the method embodiment may correspond to each other, and similar descriptions may refer to the method embodiment. Specifically, the terminal device 200 shown in FIG. 11 may correspond to the corresponding subject in executing the method 100 of the embodiment of the present application, and the aforementioned and other operations and/or functions of each unit in the terminal device 200 are for realizing the For the sake of brevity, the corresponding processes in each method are not repeated here.

The above describes the communication device in the embodiment of the present application from the perspective of functional modules with reference to the accompanying drawings. It should be understood that the functional modules may be implemented in the form of hardware, may also be implemented by instructions in the form of software, and may also be implemented by a combination of hardware and software modules. Specifically, each step of the method embodiment in the embodiment of the present application can be completed by an integrated logic circuit of the hardware in the processor and/or instructions in the form of software, and the steps of the method disclosed in the embodiment of the present application can be directly embodied as hardware The decoding processor is executed, or the combination of hardware and software modules in the decoding processor is used to complete the execution. Optionally, the software module may be located in a mature storage medium in the field such as random access memory, flash memory, read-only memory, programmable read-only memory, electrically erasable programmable memory, and registers. The storage medium is located in the memory, and the processor reads the information in the memory, and completes the steps in the above method embodiments in combination with its hardware.

For example, the processing unit and the communication unit mentioned above may be implemented by a processor and a transceiver, respectively.

Fig. 12 is a schematic structural diagram of a communication device 300 according to an embodiment of the present application.

As shown in FIG. 12 , the communication device 300 may include a processor 310 .

Wherein, the processor 310 can invoke and run a computer program from the memory, so as to implement the method in the embodiment of the present application.

As shown in FIG. 12 , the communication device 300 may further include a memory 320 .

Wherein, the memory 320 may be used to store indication information, and may also be used to store codes, instructions, etc. executed by the processor 310 . Wherein, the processor 310 can invoke and run a computer program from the memory 320, so as to implement the method in the embodiment of the present application. The memory 320 may be an independent device independent of the processor 310 , or may be integrated in the processor 310 .

As shown in FIG. 12 , the communication device 300 may further include a transceiver 330 .

Wherein, the processor 310 can control the transceiver 330 to communicate with other devices, specifically, can send information or data to other devices, or receive information or data sent by other devices. Transceiver 330 may include a transmitter and a receiver. The transceiver 330 may further include an antenna, and the number of antennas may be one or more.

It should be understood that various components in the communication device 300 are connected through a bus system, wherein the bus system includes not only a data bus, but also a power bus, a control bus, and a status signal bus.

It should also be understood that the communication device 300 may be the terminal device in the embodiment of the present application, and the communication device 300 may implement the corresponding processes implemented by the terminal device in each method of the embodiment of the present application, that is, the terminal device in the embodiment of the present application The communication device 300 may correspond to the terminal device 200 in the embodiment of the present application, and may correspond to a corresponding subject in performing the method 100 according to the embodiment of the present application, and for the sake of brevity, details are not repeated here.

In addition, a chip is also provided in the embodiment of the present application.

For example, the chip may be an integrated circuit chip, which has signal processing capabilities and can implement or execute the methods, steps and logic block diagrams disclosed in the embodiments of the present application. The chip can also be called system-on-chip, system-on-chip, system-on-chip or system-on-chip, etc. Optionally, the chip can be applied to various communication devices, so that the communication device installed with the chip can execute the methods, steps and logic block diagrams disclosed in the embodiments of the present application.

FIG. 13 is a schematic structural diagram of a chip 400 according to an embodiment of the present application.

As shown in FIG. 13 , the chip 400 includes a processor 410 .

Wherein, the processor 410 can invoke and run a computer program from the memory, so as to implement the method in the embodiment of the present application.

As shown in FIG. 13 , the chip 400 may further include a memory 420 .

Wherein, the processor 410 can invoke and run a computer program from the memory 420, so as to implement the method in the embodiment of the present application. The memory 420 may be used to store indication information, and may also be used to store codes, instructions, etc. executed by the processor 410 . The memory 420 may be an independent device independent of the processor 410 , or may be integrated in the processor 410 .

As shown in FIG. 13 , the chip 400 may further include an input interface 430 .

Wherein, the processor 410 may control the input interface 430 to communicate with other devices or chips, specifically, may obtain information or data sent by other devices or chips.

As shown in FIG. 13 , the chip 400 may further include an output interface 440 .

Wherein, the processor 410 can control the output interface 440 to communicate with other devices or chips, specifically, can output information or data to other devices or chips.

It should be understood that the chip 400 can be applied to the terminal device in the embodiment of the present application, and the chip can implement the corresponding processes implemented by the terminal device in each method of the embodiment of the present application. For the sake of brevity, details are not repeated here. It should also be understood that various components in the chip 400 are connected through a bus system, wherein the bus system includes a power bus, a control bus, and a status signal bus in addition to a data bus.

Processors mentioned above may include, but are not limited to:

General-purpose processors, digital signal processors (Digital Signal Processor, DSP), application specific integrated circuits (Application Specific Integrated Circuit, ASIC), field programmable gate arrays (Field Programmable Gate Array, FPGA) or other programmable logic devices, discrete gates Or transistor logic devices, discrete hardware components, and so on.

The processor may be used to implement or execute the methods, steps and logic block diagrams disclosed in the embodiments of the present application. The steps of the method disclosed in the embodiments of the present application may be directly implemented by a hardware decoding processor, or implemented by a combination of hardware and software modules in the decoding processor. The software module may be located in a mature storage medium in the field such as random access memory, flash memory, read-only memory, programmable read-only memory or erasable programmable memory, register. The storage medium is located in the memory, and the processor reads the information in the memory, and completes the steps of the above method in combination with its hardware.

The memory mentioned above includes but not limited to:

volatile memory and/or non-volatile memory. Among them, the non-volatile memory can be read-only memory (Read-Only Memory, ROM), programmable read-only memory (Programmable ROM, PROM), erasable programmable read-only memory (Erasable PROM, EPROM), electronically programmable Erase Programmable Read-Only Memory (Electrically EPROM, EEPROM) or Flash. The volatile memory can be Random Access Memory (RAM), which acts as external cache memory. By way of illustration and not limitation, many forms of RAM are available, such as Static Random Access Memory (Static RAM, SRAM), Dynamic Random Access Memory (Dynamic RAM, DRAM), Synchronous Dynamic Random Access Memory (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 connection dynamic random access memory (synch link DRAM, SLDRAM) and Direct Memory Bus Random Access Memory (Direct Rambus RAM, DR RAM).

It should be noted that the memories described herein are intended to include these and any other suitable types of memories.

Embodiments of the present application also provide a computer-readable storage medium for storing computer programs. The computer-readable storage medium stores one or more programs, and the one or more programs include instructions, and the instructions, when executed by a portable electronic device including multiple application programs, can cause the portable electronic device to execute the method provided by the present application . Optionally, the computer-readable storage medium can be applied to the mobile terminal/terminal device in the embodiments of the present application, and the computer program enables the computer to execute the corresponding processes implemented by the mobile terminal/terminal device in the various methods of the embodiments of the present application , for the sake of brevity, it is not repeated here.

The embodiment of the present application also provides a computer program product, including a computer program. Optionally, the computer program product can be applied to the mobile terminal/terminal device in the embodiments of the present application, and the computer program enables the computer to execute the corresponding processes implemented by the mobile terminal/terminal device in the methods of the embodiments of the present application, for It is concise and will not be repeated here.

The embodiment of the present application also provides a computer program. When the computer program is executed by a computer, the computer can execute the method provided in this application. Optionally, the computer program can be applied to the mobile terminal/terminal device in the embodiment of the present application. When the computer program is run on the computer, the computer executes each method in the embodiment of the present application to be implemented by the mobile terminal/terminal device For the sake of brevity, the corresponding process will not be repeated here.

An embodiment of the present application further provides a communication system, and the communication system may include the above-mentioned terminal device and other devices, and for the sake of brevity, details are not repeated here. It should be noted that the terms "system" and the like in this document may also be referred to as "network management architecture" or "network system".

It should also be understood that the terms used in the embodiments of the present application and the appended claims are only for the purpose of describing specific embodiments, and are not intended to limit the embodiments of the present application. For example, the singular forms "a", "said", "above" and "the" used in the embodiments of this application and the appended claims are also intended to include plural forms unless the context clearly indicates otherwise. meaning.

Those skilled in the art can appreciate that the units and algorithm steps of the examples described in conjunction with the embodiments disclosed herein can be implemented by electronic hardware, or a combination of computer software and electronic hardware. Whether these functions are executed by hardware or software depends on the specific application and design constraints of the technical solution. Professionals and technicians may use different methods to implement the described functions for each specific application, but such implementation should not be regarded as exceeding the scope of the embodiments of the present application. If implemented in the form of a software function unit and sold or used as an independent product, it can be stored in a computer-readable storage medium. Based on this understanding, the technical solution of the embodiment of the present application is essentially or the part that contributes to the prior art or the part of the technical solution can be embodied in the form of a software product, and the computer software product is stored in a storage medium , including several instructions to make a computer device (which may be a personal computer, a server, or a network device, etc.) execute all or part of the steps of the method described in the embodiment of the present application. The aforementioned storage medium includes: various media capable of storing program codes such as U disk, mobile hard disk, read-only memory, random access memory, magnetic disk or optical disk.

Those skilled in the art can also realize that for the convenience and brevity of description, the specific working process of the above-described system, device, and unit can refer to the corresponding process in the foregoing method embodiment, and details are not repeated here. In the several embodiments provided in this application, it should be understood that the disclosed systems, devices and methods may be implemented in other ways. For example, the division of units or modules or components in the above-described device embodiments is only a logical function division, and there may be other division methods in actual implementation, for example, multiple units or modules or components can be combined or integrated to another system, or some units or modules or components may be ignored, or not implemented. For another example, the units/modules/components described above as separate/display components may or may not be physically separated, that is, they may be located in one place, or may also be distributed to multiple network units. Part or all of the units/modules/components can be selected according to actual needs to achieve the purpose of the embodiments of the present application. Finally, it should be noted that the mutual coupling or direct coupling or communication connection shown or discussed above may be through some interfaces, and the indirect coupling or communication connection of devices or units may be in electrical, mechanical or other forms .

The above content is only the specific implementation of the embodiment of the application, but the scope of protection of the embodiment of the application is not limited thereto. Anyone familiar with the technical field can easily think of Any changes or substitutions shall fall within the protection scope of the embodiments of the present application. Therefore, the protection scope of the embodiments of the present application should be determined by the protection scope of the claims.

Claims

A resource selection method, characterized by comprising:

Excluding resources in the resource selection window based on the first resource to obtain a candidate resource set; the first resource includes resources allocated and/or reserved by the terminal device for other information;

In the set of candidate resources, a random selection method is used to select resources of the target data.
The method according to claim 1, wherein the other data includes uplink information;

Wherein, said excluding resources in the resource selection window based on the first resource to obtain a set of candidate resources includes:

The candidate resource set is obtained by excluding resources overlapping with the first resource within the resource selection window.
The method according to claim 2, wherein the subcarrier spacing corresponding to the first resource is different from the subcarrier spacing corresponding to the resources in the resource selection window.
The method according to claim 2, wherein the uplink information includes at least one of the following:

Physical uplink control channel PUCCH, physical uplink shared channel PUSCH, channel state information CSI, physical random access channel PRACH, Uu feedback information carried by PUCCH or Uu feedback information carried by PUSCH, sidelink feedback information carried by PUCCH or sidelink information carried by PUSCH Line feedback information.
The method according to any one of claims 1 to 4, characterized in that the other data includes side traffic control information SCI and/or side traffic data.
The method according to claim 5, wherein the first resources include: unused resources delivered to the physical layer, and/or resources indicated in the sent sideline control information SCI .
The method according to claim 6, characterized in that the time slot in which the resource indicated by the SCI is located is the same as or different from the time slot in which the SCI is located.
The method according to any one of claims 5 to 7, wherein the first resource is located within the resource selection window;

Wherein, said excluding resources in the resource selection window based on the first resource to obtain a set of candidate resources includes:

The candidate resource set is obtained by excluding the first resource in the resource selection window.
The method according to claim 8, wherein the first resource is an aperiodic resource.
The method according to claim 8, wherein the first resource is a periodic resource, and the periodic resource includes at least one resource within the resource selection window.
The method according to any one of claims 5 to 7, wherein the first resource is located outside the resource selection window;

Wherein, said excluding resources in the resource selection window based on the first resource to obtain a set of candidate resources includes:

Obtaining the candidate resource set by excluding a second resource in the resource selection window;

Wherein, the second resource is a resource determined based on the first resource and located within the resource selection window.
The method according to claim 11, wherein the first resource is a periodic resource, and there is no resource in the periodic resource within the resource selection window.
The method according to claim 11 or 12, wherein the second resource includes the first resource after the selection window as a reference point and distributed according to the transmission cycle of the target data located at the selection window. resources in the window.
The method according to any one of claims 11 to 13, further comprising:

The second resource is determined based on the location of the first resource and the sending period of the target data.
The method according to claim 14, wherein the determining the second resource based on the location of the first resource and the sending period of the target data includes:

The second resource is determined by:

T2=T1-n×T;

Wherein, T2 represents the position of the second resource, T1 represents the position of the first resource, and T represents the sending cycle of the target data.
The method according to any one of claims 5 to 15, wherein the first resource includes a retransmission resource for the sidelink data located within the resource selection window;

Wherein, said excluding resources in the resource selection window based on the first resource to obtain a set of candidate resources includes:

The candidate resource set is obtained by excluding the retransmission resources in the resource selection window.
The method according to claim 16, wherein the information used to indicate the retransmission resource is carried in the sent sideline control information (SCI).
The method according to any one of claims 5 to 17, wherein the side traffic control information SCI and/or side traffic data include at least one of the following:

The physical sidelink shared channel PSSCH, the physical sidelink control channel PSCCH, the physical sidelink feedback channel PSFCH, or the feedback information carried by the PSFCH.
The method according to any one of claims 1 to 18, further comprising:

Reporting the resource set formed by the remaining resources in the resource selection window.
The method according to any one of claims 1 to 19, wherein the selecting resources of the target data in the candidate resource set by random selection includes:

In the set of candidate resources, a random selection method is used to select resources for new transmission resources and/or retransmission resources of the target data.
A terminal device, characterized in that it includes:

The exclusion unit is configured to exclude resources in the resource selection window based on the first resource to obtain a candidate resource set; the first resource includes resources allocated and/or reserved by the terminal device for other information;

A selection unit, configured to select resources of target data in a random selection manner in the set of candidate resources.
A terminal device, characterized in that it includes:

A processor and a memory, the memory is used to store a computer program, and the processor is used to invoke and run the computer program stored in the memory to execute the method according to any one of claims 1 to 20.
A chip, characterized in that it comprises:

The processor is used to call and run the computer program from the memory, so that the device installed with the chip executes the method according to any one of claims 1 to 20.
A computer-readable storage medium, characterized by being used for storing a computer program, the computer program causes a computer to execute the method according to any one of claims 1 to 20.
A computer program product, characterized by comprising computer program instructions, the computer program instructions causing a computer to execute the method according to any one of claims 1 to 20.
A computer program, characterized in that the computer program causes a computer to execute the method according to any one of claims 1-20.