WO2021134283A1 - Procédé de sélection de ressources et dispositif - Google Patents

Procédé de sélection de ressources et dispositif Download PDF

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Publication number
WO2021134283A1
WO2021134283A1 PCT/CN2019/130071 CN2019130071W WO2021134283A1 WO 2021134283 A1 WO2021134283 A1 WO 2021134283A1 CN 2019130071 W CN2019130071 W CN 2019130071W WO 2021134283 A1 WO2021134283 A1 WO 2021134283A1
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WIPO (PCT)
Prior art keywords
resource
terminal device
resources
reserved
terminal
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PCT/CN2019/130071
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English (en)
Chinese (zh)
Inventor
丁伊
赵振山
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Oppo广东移动通信有限公司
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
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Publication date
Application filed by Oppo广东移动通信有限公司 filed Critical Oppo广东移动通信有限公司
Priority to PCT/CN2019/130071 priority Critical patent/WO2021134283A1/fr
Priority to PCT/CN2020/075366 priority patent/WO2021134863A1/fr
Priority to CN202080066386.XA priority patent/CN114424656A/zh
Publication of WO2021134283A1 publication Critical patent/WO2021134283A1/fr

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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W72/00—Local resource management
    • H04W72/04—Wireless resource allocation
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W8/00—Network data management
    • H04W8/22—Processing or transfer of terminal data, e.g. status or physical capabilities
    • H04W8/24—Transfer of terminal data

Definitions

  • This application relates to the field of communications, and more specifically, to a method and device for selecting resources.
  • the terminal device can select transmission resources in the resource pool by listening, and then the terminal device can send the physical side
  • the line control channel (physical sidelink control channel, PSCCH) indicates the selected resource location to other terminal devices.
  • PSCCH and the physical sidelink shared channel are sent at the same time, which means that the terminal device can only indicate its reserved transmission to other terminal devices after the initial transmission. Resources.
  • the transmission resources selected by the terminal device may be pre-matched with other terminal devices.
  • the reserved transmission resources conflict, which is not conducive to data transmission.
  • the present application provides a method and device for selecting resources, which can avoid conflicts with resources reserved by other terminal devices, and is beneficial to improving communication performance.
  • a method for selecting resources including: performing initial resource selection on a first terminal device, or the first terminal device has data arriving and triggering resource reselection under certain conditions, or the first terminal device
  • the terminal device determines that its reserved resources are successfully preempted by other terminal devices
  • the first terminal device selects the first resource from the first resource set, and the first resource set does not include the resource selection window being used by other terminals A resource reserved by the device; the first terminal device performs data transmission on the first resource.
  • a terminal device which is used to execute the method in the first aspect or its implementation manners.
  • the terminal device includes a functional module for executing the method in the foregoing first aspect or each of its implementation manners.
  • a terminal device including a processor and a memory.
  • the memory is used to store a computer program
  • the processor is used to call and run the computer program stored in the memory to execute the method in the above-mentioned first aspect or each of its implementation modes.
  • a device for implementing the method in the above-mentioned first aspect or each of its implementation manners.
  • the device includes: a processor, configured to call and run a computer program from the memory, so that the device installed with the device executes the method in the first aspect or its implementation manners.
  • a computer-readable storage medium for storing a computer program that enables a computer to execute the method in the above-mentioned first aspect or each of its implementation manners.
  • a computer program which when run on a computer, causes the computer to execute the method in the first aspect or its implementation manners.
  • the first terminal device selects resources for the first resource, it only selects from the set of resources that have not been reserved by other terminal devices, which can avoid the occurrence of selected resources and resources reserved by other terminal devices.
  • Conflict helps to improve communication performance.
  • Fig. 1 is a schematic diagram of a wireless communication system applied in an embodiment of the present application.
  • Fig. 2 is a schematic diagram of two transmission modes in the Internet of Vehicles provided by an embodiment of the present application.
  • Fig. 3 is a schematic diagram of a method for resource selection through interception provided by an embodiment of the present application.
  • Fig. 4 is a schematic diagram of a physical layer structure of PSCCH and PSSCH provided by an embodiment of the present application.
  • Fig. 5 is a schematic diagram of a resource reservation method provided by an embodiment of the present application.
  • Fig. 6 is a schematic diagram of a resource selection method provided by an embodiment of the present application.
  • Fig. 7 is a schematic diagram of another resource selection method provided by an embodiment of the present application.
  • Fig. 8 is a schematic diagram of another resource selection method provided by an embodiment of the present application.
  • FIG. 9 is a schematic flowchart of a method for selecting resources according to an embodiment of the present application.
  • FIG. 10 is a schematic diagram of another resource selection method provided by an embodiment of the present application.
  • Fig. 11 is a schematic diagram of another resource selection method provided by an embodiment of the present application.
  • FIG. 12 is a schematic block diagram of a terminal device provided by an embodiment of the present application.
  • FIG. 13 is a schematic structural diagram of a communication device provided by an embodiment of the present application.
  • Fig. 14 is a schematic structural diagram of a device provided by an embodiment of the present application.
  • FIG. 15 is a schematic structural diagram of a communication system provided by an embodiment of the present application.
  • Fig. 1 is a schematic diagram of a system 100 according to an embodiment of the present application.
  • the terminal device 110 is connected to a first network device 130 in a first communication system and a second network device 120 in a second communication system.
  • the first network device 130 is a Long Term Evolution (Long Term Evolution).
  • the second network device 120 is a network device under a New Radio (NR).
  • LTE Long Term Evolution
  • NR New Radio
  • the first network device 130 and the second network device 120 may include multiple cells.
  • FIG. 1 is an example of a communication system in an embodiment of the present application, and the embodiment of the present application is not limited to that shown in FIG. 1.
  • the communication system to which the embodiment of the present application is adapted may include at least multiple network devices under the first communication system and/or multiple network devices under the second communication system.
  • the system 100 shown in FIG. 1 may include one main network device under the first communication system and at least one auxiliary network device under the second communication system. At least one auxiliary network device is respectively connected to the one main network device to form multiple connections, and is connected to the terminal device 110 to provide services for it. Specifically, the terminal device 110 may simultaneously establish a connection through the main network device and the auxiliary network device.
  • connection established between the terminal device 110 and the main network device is the main connection
  • connection established between the terminal device 110 and the auxiliary network device is the auxiliary connection.
  • the control signaling of the terminal device 110 may be transmitted through the main connection
  • the data of the terminal device 110 may be transmitted through the main connection and the auxiliary connection at the same time, or may be transmitted only through the auxiliary connection.
  • first communication system and the second communication system in the embodiments of the present application are different, but the specific types of the first communication system and the second communication system are not limited.
  • the first communication system and the second communication system may be various communication systems, such as: Global System of Mobile Communication (GSM) system, Code Division Multiple Access (CDMA) system, Wideband Code Division Multiple Access (WCDMA) system, General Packet Radio Service (GPRS), Long Term Evolution (LTE) system, LTE Time Division Duplex (TDD) ), Universal Mobile Telecommunication System (UMTS), etc.
  • GSM Global System of Mobile Communication
  • CDMA Code Division Multiple Access
  • WCDMA Wideband Code Division Multiple Access
  • GPRS General Packet Radio Service
  • LTE Long Term Evolution
  • TDD Time Division Duplex
  • UMTS Universal Mobile Telecommunication System
  • the main network equipment and the auxiliary network equipment may be any access network equipment.
  • the access network device may be a base station (Base Transceiver) in the Global System of Mobile Communications (GSM) system or Code Division Multiple Access (CDMA).
  • BTS can also be a base station (NodeB, NB) in a Wideband Code Division Multiple Access (WCDMA) system, or an evolved base station in a Long Term Evolution (LTE) system (Evolutional Node B, eNB or eNodeB).
  • GSM Global System of Mobile Communications
  • CDMA Code Division Multiple Access
  • Station, BTS can also be a base station (NodeB, NB) in a Wideband Code Division Multiple Access (WCDMA) system, or an evolved base station in a Long Term Evolution (LTE) system (Evolutional Node B, eNB or eNodeB).
  • WCDMA Wideband Code Division Multiple Access
  • LTE Long Term Evolution
  • the access network device may also be a Next Generation Radio Access Network (NG RAN), or a base station (gNB) in an NR system, or a cloud radio access network (Cloud
  • NG RAN Next Generation Radio Access Network
  • gNB base station
  • Cloud Cloud
  • the access network device can be a relay station, access point, in-vehicle device, wearable device, or the public land mobile network (PLMN) that will evolve in the future Network equipment, etc.
  • PLMN public land mobile network
  • the first network device 130 is taken as the main network device, and the second network device 120 is taken as an auxiliary network device as an example.
  • the first network device 130 may be an LTE network device, and the second network device 120 may be an NR network device.
  • the first network device 130 may be an NR network device
  • the second network device 120 may be an LTE network device.
  • both the first network device 130 and the second network device 120 may be NR network devices.
  • the first network device 130 may be a GSM network device, a CDMA network device, etc.
  • the second network device 120 may also be a GSM network device, a CDMA network device, or the like.
  • the first network device 130 may be a Macrocell
  • the second network device 120 may be a Microcell, Picocell, Femtocell, or the like.
  • the terminal device 110 may be any terminal device, and the terminal device 110 includes but is not limited to:
  • a terminal device configured to receive/send communication signals; and/or Internet of Things (IoT) equipment.
  • a terminal device set to communicate through a wireless interface may be referred to as a "wireless communication terminal", a “wireless terminal” or a "mobile terminal”.
  • Examples of mobile terminals include, but are not limited to, satellite or cellular phones; Personal Communications System (PCS) terminals that can combine cellular radio phones with data processing, fax, and data communication capabilities; can include radio phones, pagers, Internet/intranet PDA with internet access, web browser, memo pad, calendar, and/or Global Positioning System (GPS) receiver; and conventional laptop and/or palmtop receivers or others including radio telephone transceivers Electronic device.
  • Terminal equipment can refer to access terminals, user equipment (UE), user units, user stations, mobile stations, mobile stations, remote stations, remote terminals, mobile equipment, user terminals, terminals, wireless communication equipment, user agents, or User device.
  • the access terminal can be a cellular phone, a cordless phone, a Session Initiation Protocol (SIP) phone, a wireless local loop (Wireless Local Loop, WLL) station, a personal digital processing (Personal Digital Assistant, PDA), with wireless communication Functional handheld devices, computing devices or other processing devices connected to wireless modems, in-vehicle devices, wearable devices, terminal devices in 5G networks, or terminal devices in the future evolution of PLMN, etc.
  • SIP Session Initiation Protocol
  • WLL Wireless Local Loop
  • PDA Personal Digital Assistant
  • D2D communication may be performed between the terminal devices 120.
  • the 5G system or 5G network may also be referred to as NR system or NR network.
  • Device-to-device communication is a D2D-based sidelink (SL) transmission technology, which is different from the way in which communication data is received or sent through a base station in a traditional cellular system.
  • the device-to-device direct communication method is also adopted in the Internet of Vehicles system, so it has higher spectrum efficiency and lower transmission delay.
  • 3GPP 3rd Generation Partnership Project
  • Mode A Mode A
  • Mode B Mode B
  • Mode A The transmission resources of the terminal are allocated by the base station, and the terminal transmits data on the side link according to the resources allocated by the base station; the base station can allocate resources for a single transmission to the terminal on the downlink (DL). It is also possible to allocate semi-static transmission resources to the terminal.
  • Mode B The terminal selects a resource in the resource pool for data transmission. Specifically, the terminal may select transmission resources from the resource pool by means of listening, or select transmission resources from the resource pool by means of random selection.
  • Figure 3 shows a schematic diagram of resource selection by means of listening.
  • V2X when a new data packet arrives at time n and triggers the terminal to perform initial resource selection or triggers resource reselection, the terminal can, based on the listening results in the past 1 second, enter [n+T1,n+ T2] Resource selection within millisecond time range, where T1 ⁇ 4; 20 ⁇ T2 ⁇ 100.
  • the selection of T1 should be greater than the processing delay of the terminal, and the selection of T2 needs to be within the required range of the service delay. For example, if the delay requirement of the service is 50ms, then 20 ⁇ T2 ⁇ 50, and if the delay requirement of the service is 100ms, then 20 ⁇ T2 ⁇ 100.
  • a terminal device in a V2X scenario can indicate its reserved resources by carrying resource reservation information in the PSCCH, so that other terminal devices can determine the resources reserved by the terminal device by means of listening, and whether it is Need to release reserved resources.
  • a terminal device When a terminal device selects resources, it can make a selection based on the resources reserved by other terminal devices.
  • the process for the terminal to select resources in the selection window can be as follows:
  • the terminal sends data on some subframes in the listening window without listening, the resources of these subframes on the corresponding subframes in the selection window are excluded.
  • the terminal If the terminal sends data at time t within the listening window, the terminal does not listen to the data transmission status of other terminals. Therefore, the terminal can exclude all the resources that may be reserved by other terminals at time t in the selection window.
  • the terminal detects the PSCCH in the listening window, it measures the reference signal receiving power (RSRP) of the PSSCH scheduled by the PSCCH. If the measured PSSCH-RSRP is higher than the PSSCH-RSRP threshold, and the reserved transmission resource is determined to be within the resource selection window of the terminal according to the reservation information in the control information transmitted in the PSCCH, the terminal is excluded from resource set A Drop the resource.
  • the initial set of resource set A includes all candidate resources in the resource selection window, and the selection of the PSSCH-RSRP threshold is determined by the priority information carried in the detected PSCCH and the priority of the data to be transmitted by the terminal.
  • the network device can configure the terminal device with the correspondence between the priority information and the PSSCH-RSRP threshold.
  • the network device can configure the terminal device with the priority information carried in the PSCCH-the priority of the data to be transmitted, which is the same as the threshold. Correspondence between.
  • the terminal After receiving the corresponding relationship, the terminal can determine the PSSCH-RSRP threshold used according to the corresponding relationship.
  • the terminal can increase the PSSCH-RSRP threshold by 3dB, and repeat steps 1-2 until the number of resources remaining in set A More than 20% of the total resources.
  • the terminal performs sidelink received signal strength indicator (S-RSSI) detection on the remaining resources in set A, and sorts them according to energy level, and sorts the 20% of the lowest energy (relative to set A) The number of resources) is placed in set B.
  • S-RSSI sidelink received signal strength indicator
  • the terminal can try to avoid using high-energy resources when selecting resources. Therefore, the terminal can preferentially select low-energy resources.
  • the terminal selects a resource from set B with a moderate probability for data transmission.
  • the PSCCH used to transmit control information is included in the PSSCH used to transmit data, which also means that the PSCCH and PSSCH must be sent at the same time. Therefore, the current standard only supports the initial transmission of the current transport block (TB) to reserve the retransmission of the current TB, the retransmission of the current TB reserves the retransmission of the current TB, and the initial transmission or retransmission of the previous TB. Reserve the initial transmission or retransmission of the current TB.
  • TB current transport block
  • TB1 includes resource blocks x1, y1, and z1, and TB2 includes resource blocks x2, y2, and z2.
  • the initial transmission resource x1 of TB1 can reserve the initial transmission resource x2 of TB2, the initial transmission resource x2 of TB2 can reserve the retransmission resources y2 and z2 of TB2, and the retransmission resource y2 of TB2 can reserve the retransmission resource z2 of TB2.
  • PSCCH and PSSCH are sent at the same time, when a terminal device performs initial resource selection or resource reselection, the selected initial transmission resource cannot be indicated to other terminal devices. Only after the initial transmission can it be passed The PSCCH is initially transmitted to indicate its reserved resources to other terminal devices.
  • the terminal generates a data packet at time n, and the terminal device needs to select a resource.
  • the resource set A can be selected from the resource selection window.
  • the resource selection window starts at time (n+T1) and ends at time (n+T2).
  • T1 is greater than or equal to the sum of the data processing time of the terminal and the time required for resource selection, and T2 min ⁇ T2 ⁇ service delay requirement range.
  • the terminal can perform resource listening from time (n-T0) to time n, and the value range of T0 is [100,1100] milliseconds. If the terminal hears the PSCCH, the terminal can measure the RSRP of the PSCCH or the RSRP of the PSSCH scheduled by the PSCCH. If the measured RSRP is greater than the RSRP threshold, and the reserved resources are determined to be within the resource selection window according to the resource reservation information in the control information transmitted in the PSCCH, the resources reserved by the PSCCH are excluded, and the resources remaining after the exclusion Form resource set A. After resource exclusion, the terminal randomly selects several resources from the resource set A as sending resources for its initial transmission and retransmission.
  • the above RSRP threshold is determined by the priority carried in the PSCCH monitored by the terminal and the priority of the data to be sent by the terminal.
  • the terminal can continuously listen for resources and record the results of the interception.
  • the terminal can perform resource selection according to the previous listening results between time (n-T0) and time n.
  • resource preemption is supported in NR-V2X.
  • a high-priority UE can preempt resources of a low-priority UE to ensure priority transmission of services of a high-priority UE. Therefore, after the terminal performs resource exclusion, the set A may include resource blocks reserved by the low-priority terminal. For example, by adjusting the RSRP threshold, the terminal may exclude resources reserved by low-priority terminals.
  • UE1 generates data and performs resource selection at time n, UE1 determines the resource selection window from time (n+T1) to time (n+T2) and the resource detection from time (n-T0) to time n. Listening window.
  • UE1 listens to the PSCCH and PSSCH sent by UE2 at time (n-a), and determines that it reserves the resource x at time (n+b). After UE1 listens to the PSCCH sent by UE2, it learns that the priority carried in the PSCCH of UE2 is lower than the priority of the data to be sent, thereby raising the RSRP threshold, so that the measured RSRP of the signal sent by UE2 is lower than RSRP The probability of the threshold increases. When the measured RSRP is lower than the RSRP threshold, the UE1 will not exclude the resource x reserved by the UE2, that is, the resource set A still includes the resource x.
  • UE1 If UE1 randomly selects the resource x reserved by UE2 in the resource set A after the resource exclusion, UE1 preempts the resource x. Conversely, if UE1 detects that the priority carried in the PSCCH of UE2 is higher than the priority of its own data to be sent, the RSRP threshold is lowered, so that the resources reserved by UE2 are more easily excluded, thereby avoiding using the same with high-priority UEs. Resource block.
  • NR-V2X also supports re-evaluation (re-evaluation) after initial resource selection or resource reselection.
  • the terminal generates data at time n, determines the resource listening window and the resource selection window, selects the resource, and selects the initial transmission resource x at time (n+a) and time (n+b) The retransmission resource y of and the retransmission resource z at time (n+c). After time n, the terminal will continue to listen to the PSCCH. Before time (n+a), if the terminal discovers that resource x, resource y, or resource z is reserved by other UEs through continuous listening, and the measured RSRP is higher than the RSRP threshold, the terminal will release the corresponding resources and meet the service requirements Re-select another resource on the premise of delay.
  • the terminal After time (n+a), because the terminal has already sent PSCCH and PSSCH on resource x and reserved resources y and z, the terminal only discovers through continuous listening that a high-priority UE has reserved resources y and/ Or z, and RSRP is higher than the RSRP threshold, the terminal will release resources y and/or z, and reselect resources. If a low-priority UE reserves resources y and/or z, the terminal will not release resources y and/or z, because according to the resource preemption mechanism, if a low-priority UE discovers that its priority is higher than its priority through listening The terminal of which reserves resources y and/or z will actively release resources y and/or z, which can avoid resource conflicts.
  • the initial transmission resources selected by the terminal may also preempt resources reserved by other low-priority UEs, and the terminal will not send any signal to inform the preempted low-priority UE before the initial transmission.
  • the first-level UE releases the corresponding resources and reselects the resources, resulting in resource collision.
  • UE1 after UE1 generates a data packet at time n, it can determine the resource selection window and the resource listening window and perform resource selection.
  • UE1 listens, UE2 sends PSCCH and PSSCH at time (n-a) and reserves resource x at time (n+b).
  • UE1 After UE1 listened to the PSCCH of UE2 in the resource listening window, it found that the priority carried in the PSCCH of UE2 was lower than the priority of the data to be sent by itself. According to the above, by adjusting the RSRP threshold, UE1 did not exclude UE2 Reserved resources x. Assume that UE1 selects resource x for the initial transmission, and selects the retransmission resource y.
  • UE2 has been continuously listening after sending PSCCH and PSSCH at time (na), but until time (n+b), UE1 has not sent any signal to tell UE2 to release resource x and reselect (because UE1 at time (n+b) will be the first transmission, will send PSCCH and PSSCH). Therefore, UE1 and UE2 may use resource x at the same time, resource collision occurs, UE1 and UE2 are interference sources for each other, and communication reliability is reduced.
  • UE1 has a service arrives at time n, UE1 selects resources, and selects the initial transmission resource x at time (n+a), and the retransmission resource y at time (n+b) and time (n+c) and z.
  • UE1 sends the initial transmission data at time (n+a), and through re-evaluation before time (n+b)
  • a high-priority UE preempts the resource y selected by UE1 at time n, according to the resource preemption
  • UE1 needs to release resource y and reselect resources for retransmission. If the reselection of resource y is selected according to a method similar to that in Fig. 8, since other UEs cannot know the resource reselected by the terminal, there will also be a resource collision problem, that is, the resource reselected by UE1 may be as low as possible.
  • the resources reserved by the priority UE conflict is possible.
  • the embodiment of the present application provides a method for resource selection, which can avoid resource conflicts and help improve communication reliability.
  • the terminal can perform resource preemption.
  • the terminal can decide whether to perform resource preemption according to the result of the measured channel busy ratio (CBR). For example, when the CBR is high, the terminal performs resource preemption; when the CBR is low, the terminal does not perform resource preemption.
  • CBR channel busy ratio
  • CBR indicates the occupancy rate of the channel by other terminals.
  • a higher CBR indicates a higher channel occupancy rate and requires the terminal to preempt resources to use resources;
  • a lower CBR indicates a lower channel occupancy rate and the channel is relatively idle, and the terminal may not need to perform Resources can be used by preempting resources.
  • the terminal determining that resource preemption is required may indicate that the terminal has activated resource preemption.
  • the terminal activates resource preemption
  • the terminal can exclude the corresponding resources in the resource selection window according to the result of listening in the resource listening window, and the remaining unexcluded resources form the resource set A.
  • resource set A there are not only blank resources not reserved by other UEs, but also resources reserved by other UEs but whose RSRP measurement value is lower than the RSRP threshold. The blank resources not reserved by other UEs are recorded. It is resource collection B.
  • the resources used by the terminal for initial transmission are randomly selected from resource set B with medium probability, and the resources used for terminal retransmission are randomly selected from resource set A with medium probability.
  • resource set B is an empty set or resource set B only includes resources in resource set A with the highest time domain order (the last time domain position)
  • the resources used by the terminal for initial transmission are randomly selected from resource set A with medium probability.
  • the method of the embodiment of the present application may include steps S910 to S920.
  • the first terminal device performs initial resource selection, or the first terminal device has data arriving and triggers resource reselection under certain conditions, or the first terminal device determines that its reserved resources are successfully preempted by other terminal devices .
  • the first terminal device selects the first resource from the first resource set, where the first resource set does not include resources reserved by other terminal devices in the resource selection window.
  • the first terminal device performs data transmission on the first resource.
  • Triggering the terminal device to perform initial resource selection may refer to that the terminal device is initially connected to the network and when data arrives, the terminal device can be triggered to perform the initial resource selection.
  • the network device can configure a certain number of resources for the terminal device, such as m resources. Each time the terminal device uses a resource, the number of resources is reduced by 1. When the number of resources is reduced to 0 and the terminal device has data to transmit, It will trigger the terminal device to reselect resources.
  • the first terminal device determines that its reserved resources are successfully preempted by other terminal devices means that the first terminal device has sent resource reservation information through initial transmission or retransmission, indicating its reserved resources, such as instructing it to reserve The resource is resource a.
  • the first terminal device discovers through listening that other high-priority UE2 also reserves resource a, and detects that the signal quality of the PSCCH or PSSCH sent by UE2 is higher than the preset threshold, it indicates the resources reserved by the first terminal device Successfully preempted by other terminal equipment. This means that the UE2 succeeds in preempting the resource a. In this case, the first terminal device needs to abandon the resource a and reselect the resource a again.
  • this embodiment of the application can select from the first resource set, that is, select the first resource from the first resource set, and the first resource set does not include reservations by other terminal devices.
  • the first resource set may be the above-mentioned resource set B that only includes blank resources.
  • the first terminal device When the first terminal device selects the first resource, it can exclude all the resources reserved by other terminal devices in the resource selection window according to the listening result in the resource listening window, and only remove the resources that are not in the resource selection window. Select from the blank resources reserved by other terminal devices, which can avoid conflicts with resources reserved by low-priority UEs, which is beneficial to improving communication reliability.
  • the time range corresponding to the resource listening window can be [n-T0,n], time n is the time when the first terminal device needs to perform initial resource selection, or time n is the first terminal device has data arrived and triggered under certain conditions
  • time reselection, or time n is the time when the first terminal device determines that its reserved resources are successfully preempted by other terminal devices.
  • T0 can be predefined in the protocol, and the value range of T0 can be [100,1100] milliseconds.
  • the time range corresponding to the resource selection window can be [n+T1, n+T2], T1 is greater than 0, T2 is greater than T1, and time n is the time when the first terminal device needs to perform initial resource selection, or time n is the The time when data arrives at the first terminal device and triggers resource reselection under certain conditions, or time n is the time when the first terminal device determines that its reserved resources are successfully preempted by other terminal devices.
  • T2 is determined according to the maximum transmission delay of the data to be transmitted in the first terminal device, that is, the selection of T2 needs to meet the delay requirement of data transmission.
  • the transmission delay of the data to be transmitted in the first terminal device is 50ms. If the first terminal device has data arriving at time n and triggers initial resource selection or resource reselection, then T2 ⁇ 50ms; if the data arrives The time at is time (nm), and the terminal device has performed the initial data transmission. After the initial transmission, the first terminal device determines that its reserved resources are successfully preempted by other terminal devices at time n, then (T2+m) ⁇ 50ms .
  • the first resource can be the initial resource.
  • the terminal device may select the initial transmission resource from the first resource set.
  • the first terminal device may select the retransmission resource from the second resource set. After selecting the retransmission resource, the terminal device can send the retransmission data on the retransmission resource.
  • the second resource set may include resources that are not reserved by other terminal devices in the resource selection window and resources that meet the first condition, and the range of the second resource set is greater than or equal to the range of the first resource set.
  • the second resource set may be the set A described above.
  • the resource that satisfies the first condition may be, for example, a resource reserved by other terminal equipment through the first PSCCH.
  • the first PSCCH is a PSCCH whose signal quality is less than a first preset threshold or the signal quality of a scheduled PSSCH is less than a second preset threshold.
  • the first preset threshold and/or the second preset threshold may be configured by the network device to the first terminal device.
  • the first preset threshold and the second preset threshold may be equal or not equal.
  • the network device can configure the terminal device with the priority of the data transmitted by other terminal devices-the priority of the data to be transmitted by the first terminal device, and the relationship between the preset threshold.
  • the terminal device can determine the first terminal device based on the priority information.
  • a preset threshold and/or a second preset threshold Since the priority of data transmitted by different terminal devices is different, for different terminal devices, the first preset threshold value may be different, and the second preset threshold value may also be different.
  • the terminal device selects retransmission resources, it can exclude the resources reserved by other terminal devices and have relatively high signal quality in the resource selection window according to the listening results in the resource listening window, and there is no excluded resource composition
  • the second resource set the terminal device selects the retransmission resource from the second resource set.
  • the second resource set includes resources that are not reserved by other terminal devices and resources that are reserved by other terminal devices but have poor signal quality.
  • the retransmission resource is the resource used by the terminal device for data transmission after the initial transmission
  • the first terminal device uses the retransmission resource, it has already indicated its reserved retransmission resources to other devices through the initial transmission, and other terminals
  • the device can listen to the initial transmission resource of the first terminal device to give up or preempt the retransmission resource. For example, a terminal device with poor signal quality can abandon the use of retransmission resources, and the resource reserved by a terminal device with higher signal quality has been excluded from the second resource set by the first terminal device, so that the first terminal The retransmission resources selected by the device will not conflict with the resources reserved by other terminal devices, which is conducive to improving communication performance.
  • the signal quality may be expressed by at least one of the following: RSRP, reference signal receiving quality (RSRQ), received signal strength indication (RSSI), signal to interference plus noise ratio (signal-to-interference-and-noise-ratio, SINR).
  • RSRP reference signal receiving quality
  • RSSI received signal strength indication
  • SINR signal to interference plus noise ratio
  • UE1 activates resource preemption, and when data arrives at time n, UE1 can determine from time (n+T1) to time (n+T2) according to the listening results in the listening window from time (n-T0) to time n
  • the resources in the resource selection window are screened, and the screened resources form resource set A.
  • the resource set A includes resources ⁇ x, y, z, m, n, k ⁇ .
  • resources z, m, n, and k are blank resources not reserved by other UEs, and resources x and y are resources reserved by UE2 and UE3 but whose RSRP measurement value is lower than the RSRP threshold.
  • Blank resources z, m, n, and k can form resource set B.
  • the resources used by the UE1 for the initial transmission can be randomly selected from the resource set B with a medium probability.
  • the resources used by the UE1 for retransmission can be randomly selected from the resource set A with a medium probability.
  • the time domain position of the retransmission resource must be after the time domain position of the initial transmission resource.
  • UE1 When UE1 selects resources from resource set A and resource set B, it is randomly selected with equal probability. This can prevent multiple UEs from selecting the same resource, which is beneficial to reduce the probability of resource conflicts.
  • the first terminal device may select the first resource from the second resource set.
  • the first resource set is empty, it means that all resources in the resource selection window are resources reserved for other terminal devices.
  • the second condition is that all the resources in the first resource set are resources whose time domain positions in the second resource set are higher than the third preset threshold, that is, the first resource set only includes the resources in the second resource set. Resources with a lower domain location.
  • the first resource set includes resources m and n, and resources m and n are the resources with the highest temporal position in the second resource set, or resources m and n are the resources with the highest and second-highest temporal position in the second resource set, respectively .
  • the resource reserved by the first terminal device and successfully preempted by other terminal devices is the retransmission resource.
  • the terminal device may select a reselection resource for the retransmission resource from the first resource set.
  • the first resource set does not include resources reserved by other terminal devices.
  • the first terminal device determines that the resource reserved by the first terminal device and successfully preempted by other terminal devices includes at least one resource, and the target resource is the resource with the highest position in the time domain among the at least one resource.
  • the terminal device may select a reselection resource for the target resource from the first resource set.
  • the terminal device can exclude that the distance from the time domain location of the resource that does not perform resource reselection is less than the preset value Resources.
  • the terminal device does not want to retransmit one piece of data twice in one time slot. Therefore, in order to avoid reselecting resources and resources that are not subject to resource reselection falling into one time slot, the terminal device can compare and not retransmit resources. All resources in the time slot where the selected resource is located are excluded from the first resource set, that is, the first resource set does not include all resources in the time slot where the resource reserved by the first terminal device is not subject to resource reselection.
  • the first terminal device may select from the third resource set.
  • the first terminal device may select a second resource from a third resource set.
  • the second resource is a reselection resource for at least one resource other than the target resource.
  • the third resource set includes the resource selection window. Resources that are not reserved by other terminal devices and resources that meet the first condition.
  • the resource that satisfies the first condition may be, for example, a resource reserved by other terminal equipment through the first PSCCH.
  • the first PSCCH is a PSCCH whose signal quality is less than a first preset threshold or the signal quality of a scheduled PSSCH is less than a second preset threshold.
  • the first preset threshold and/or the second preset threshold may be configured by the network device to the first terminal device.
  • the first preset threshold and the second preset threshold may be equal or not equal.
  • the network device can configure the terminal device with the priority of the data transmitted by other terminal devices-the priority of the data to be transmitted by the first terminal device, and the relationship between the preset threshold.
  • the terminal device can determine the first terminal device based on the priority information.
  • a preset threshold and/or a second preset threshold Since the priority of data transmitted by different terminal devices is different, for different terminal devices, the first preset threshold value may be different, and the second preset threshold value may also be different.
  • the third resource set may not include resources whose distances from the time domain positions of the resources for which resource reselection is not performed are less than a preset value. For example, the third resource set does not include all resources in the time slot where the resources reserved by the first terminal device without resource reselection are located.
  • the solution of the embodiment of the present application may be for a scenario where PSCCH and PSSCH are simultaneously transmitted.
  • a terminal device simultaneously transmits PSCCH and PSSCH on the selected first resource, second resource, and/or reselection resource, where the PSCCH may carry
  • the resource reservation information of the first terminal device carries the resource location reserved by the first terminal device.
  • the resource location reserved by the first terminal device may include a time domain location and/or a frequency domain location.
  • UE1 activates resource preemption, and when a service arrives at time n, UE1 completes resource selection. At time (n+a), UE1 finds through re-evaluation that a high-priority UE preempts the resource selected by UE1 at time n, and UE1 needs to reselect the preempted resource.
  • UE1 selects resources x, y, and z.
  • time (n+a) if UE1 finds that resource y is preempted by a high-priority UE through continuous listening, and the RSRP measurement value is higher than the RSRP threshold, UE1 reselects resource y.
  • the manner in which UE1 performs resource reselection at time (n+a) is similar to the manner in which resource selection is performed at time n in FIG. 10.
  • UE1 can, according to the listening results in the resource listening window from time (n+a-T0) to time (n+a), determine from time (n+a+T1) to time (n+a+T2) To filter the resources in the resource selection window.
  • T2 The selection of T2 should meet the transmission delay requirements of the current service. Since the current service arrives at time n, (a+T2) ⁇ service transmission delay.
  • resource set A When the UE performs resource screening, it also needs to exclude all resources in the time slot where the resource that does not perform resource reselection is located. Assuming that UE1 only reselects resource y, all resources in the time slot where resource z is located should be excluded by UE1, otherwise UE1 may send data on two resources in the same time slot at the same time. After UE1 performs the foregoing resource exclusion, the set of remaining resources is denoted as resource set A.
  • the blank resources in the resource set A that are not reserved by other UEs form the resource set B.
  • UE1 will sort all the resources that require resource reselection in the time domain.
  • the reselection of the resource with the lowest time domain order (the time domain position is at the top) will be randomly selected in resource set B with a medium probability, and for the remaining resources
  • the reselection is randomly selected in resource set A with medium probability.
  • UE1 directly searches resource set B for reselection resources for resource y.
  • UE1 searches for reselection resources for resource y in resource set B, and searches for reselection resources for resource z in resource set A.
  • the time domain position of the reselection resource of resource z should be arranged after the time domain position of the reselection resource of resource y.
  • the first terminal device may select the first resource from the third resource set.
  • the first resource set is empty, it means that all resources in the resource selection window are resources reserved for other terminal devices.
  • the second condition is that all resources in the first resource set are resources whose time-domain positions in the third resource set are higher than the third preset threshold, that is, the first resource set only includes the resources in the third resource set. Resources with a lower domain location.
  • the first resource set includes resources m and n, and resources m and n are the resources with the highest temporal position in the third resource set, or resources m and n are the resources with the highest and second highest temporal position in the third resource set, respectively .
  • the low-priority UE described above may refer to the lower priority carried in the PSCCH sent by the UE.
  • the initial transmission resource and the retransmission resource may be selected at the same time.
  • the terminal device selects the initial transmission resource and all retransmission resources before the initial transmission.
  • the initial transmission of UE1 will preferentially select blank resources not reserved by other UEs.
  • active resource preemption if the initial transmission of UE1 preferentially selects blank resources, that is, the resources reserved by the low-priority UE will not be preempted, only retransmission will preempt the resources reserved by the low-priority UE.
  • UE1's retransmission preempts the resource x reserved by UE2, from time n to time (n+b)
  • UE1 will send the PSCCH and PSSCH of the initial transmission. And UE2 will continue to listen from time (n-a) to time (n+b).
  • UE2 When it listens to the PSCCH sent by UE1, UE2 will release resource x and reselect, so as to avoid resource collision. In addition, no matter whether resource preemption is activated or not, the method described in the embodiment of the present application can improve the communication reliability of UE1's initial transmission.
  • the resource preemption described in the embodiments of the present application refers to that a high-priority UE can preempt resources reserved by a low-priority UE.
  • the wireless communication method according to the embodiment of the present application is described in detail above.
  • the device according to the embodiment of the present application will be described below in conjunction with FIG. 12 to FIG. 15.
  • the technical features described in the method embodiment are applicable to the following device embodiments.
  • FIG. 12 is a schematic block diagram of a terminal device provided by an embodiment of the present application.
  • the terminal device may be any terminal device described above.
  • the terminal device may be the first terminal device described above.
  • the terminal device 1200 shown in FIG. 12 includes a processing unit 1210 and a communication unit 1220, where:
  • the processing unit 1210 is configured to perform initial resource selection on the first terminal device, or the first terminal device has data arriving and trigger resource reselection under certain conditions, or the first terminal device determines that its reserved resources are In the case that other terminal devices successfully preempt, the first resource is selected from the first resource set, and the first resource set does not include the resources reserved by other terminal devices in the resource selection window.
  • the communication unit 1220 is configured to perform data transmission on the first resource.
  • the processing unit 1210 is configured to: when the first terminal device performs initial resource selection, or the first terminal device has data arriving and triggers resource reselection under certain conditions, from the Select the initial resource from the first resource collection.
  • the processing unit 1210 is configured to: select retransmission resources from a second resource set, where the second resource set includes resources that are not reserved by other terminal devices in the resource selection window and satisfy the first Conditional resources; the communication unit 1220 is used to send retransmission data on the retransmission resources.
  • the resources reserved by the first terminal device and successfully preempted by other terminal devices are retransmission resources.
  • the first terminal device determines that the resource reserved by the first terminal device and successfully preempted by other terminal devices includes at least one resource, and the target resource is the resource with the highest position in the time domain among the at least one resource; the processing The unit 1210 is configured to select a reselection resource for the target resource from the first resource set.
  • the processing unit 1210 is configured to select a second resource from a third resource set, where the third resource set includes resources that are not reserved by the other terminal device in the resource selection window, and The resource of the first condition, the second resource is a reselection resource for resources other than the target resource in the at least one resource; the communication unit 1220 is configured to: send a reselection on the second resource Transfer data.
  • the first resource set and/or the third resource set do not include all resources in the time slot where the resource reserved by the first terminal device is not reselected, and the resource reselection is not performed
  • the selected resource is a resource reserved by the first terminal device and not successfully preempted by other terminal devices.
  • the resource that meets the first condition is a resource reserved by other terminal equipment through the first physical side line control channel PSCCH, and the first PSCCH is a physical side whose signal quality is less than a first preset threshold or scheduled The signal quality of the line shared channel PSSCH is less than the PSCCH of the second preset threshold.
  • the first preset threshold and/or the second preset threshold are configured by the network device to the first terminal device.
  • the signal quality is represented by at least one of the following: reference signal received power RSRP, reference signal received quality RSRQ, received signal strength indicator RSSI, signal to interference plus noise ratio SINR.
  • the resource reserved by the other terminal device through the first PSCCH is determined by the first terminal device by listening to the first PSCCH within a resource listening window.
  • the time range corresponding to the resource listening window is [n-T0, n], and time n is the time when the first terminal device needs to perform initial resource selection, or time n is the first terminal device The time when data arrives and resource reselection is triggered under certain conditions, or time n is the time when the first terminal device determines that its reserved resources are successfully preempted by other terminal devices, and the T0 is predefined in the protocol.
  • the time range corresponding to the resource selection window is [n+T1, n+T2], T1 is greater than 0, T2 is greater than T1, and time n is the time when the first terminal device needs to perform initial resource selection, or Time n is the time when the first terminal device has data arrived and resource reselection is triggered under certain conditions, or time n is the time when the first terminal device determines that its reserved resources are successfully preempted by other terminal devices.
  • the T2 is determined according to the maximum transmission delay of data.
  • the communication unit 1220 is configured to simultaneously send PSCCH and PSSCH on the first resource.
  • the PSCCH is used to indicate the resource location reserved by the first terminal device.
  • the processing unit 1210 is configured to: when the first resource set is empty or the first resource set satisfies a second condition, select the second resource set or the third resource set The first resource; wherein the second resource set and the third resource set include resources not reserved by the other terminal devices in the resource selection window, and resources reserved by other terminal devices through the first PSCCH
  • the first PSCCH is a PSCCH whose signal quality is less than a preset threshold or the signal quality of a scheduled PSSCH is less than a preset threshold;
  • the second condition is that all resources in the first resource set are the second The resource set or the resource whose time domain position is higher than the third preset threshold in the third resource set.
  • the second condition is that all resources in the set are the resources with the highest time domain position in the second resource set or the third resource set.
  • the above-mentioned communication module may be a communication interface or a transceiver, or an input/output interface of a communication chip or a system-on-chip.
  • the aforementioned determining module may be one or more processors.
  • FIG. 13 is a schematic structural diagram of a communication device 1300 according to an embodiment of the present application.
  • the communication device 1300 shown in FIG. 13 includes a processor 1310, and the processor 1310 can call and run a computer program from a memory to implement the method in the embodiment of the present application.
  • the communication device 1300 may further include a memory 1320.
  • the processor 1310 can call and run a computer program from the memory 1320 to implement the method in the embodiment of the present application.
  • the memory 1320 may be a separate device independent of the processor 1310, or may be integrated in the processor 1310.
  • the communication device 1300 may further include a transceiver 1330, and the processor 1310 may control the transceiver 1330 to communicate with other devices. Specifically, it may send information or data to other devices, or receive other devices. Information or data sent by the device.
  • the transceiver 1330 may include a transmitter and a receiver.
  • the transceiver 1330 may further include an antenna, and the number of antennas may be one or more.
  • the communication device 1300 may specifically be a network device of an embodiment of the application, and the communication device 1300 may implement the corresponding process implemented by the network device in each method of the embodiment of the application. For brevity, details are not repeated here. .
  • the communication device 1300 may specifically be a mobile terminal/terminal device of an embodiment of the present application.
  • the communication device 1300 may be a first terminal device, and the communication device 1300 may implement various methods in the embodiments of the present application.
  • the corresponding process implemented by the mobile terminal/terminal device will not be repeated here.
  • Fig. 14 is a schematic structural diagram of a device according to an embodiment of the present application.
  • the apparatus 1400 shown in FIG. 14 includes a processor 1410, and the processor 1410 can call and run a computer program from the memory to implement the method in the embodiment of the present application.
  • the apparatus 1400 may further include a memory 1420.
  • the processor 1410 may call and run a computer program from the memory 1420 to implement the method in the embodiment of the present application.
  • the memory 1420 may be a separate device independent of the processor 1410, or may be integrated in the processor 1410.
  • the device 1400 may further include an input interface 1430.
  • the processor 1410 can control the input interface 1430 to communicate with other devices or devices, and specifically, can obtain information or data sent by other devices or devices.
  • the device 1400 may further include an output interface 1440.
  • the processor 1410 can control the output interface 1440 to communicate with other devices or devices, and specifically, can output information or data to other devices or devices.
  • the device can be applied to the network equipment in the embodiments of the present application, and the device can implement the corresponding processes implemented by the network equipment in the various methods of the embodiments of the present application.
  • the device can implement the corresponding processes implemented by the network equipment in the various methods of the embodiments of the present application.
  • details are not described herein again.
  • the device can be applied to the mobile terminal/terminal device in the embodiment of the present application, and the device can implement the corresponding process implemented by the mobile terminal/terminal device in each method of the embodiment of the present application.
  • the device can implement the corresponding process implemented by the mobile terminal/terminal device in each method of the embodiment of the present application.
  • the device can implement the corresponding process implemented by the mobile terminal/terminal device in each method of the embodiment of the present application.
  • the device mentioned in the embodiment of the present application may be a chip, and the chip may also be called a system-on-chip, a system-on-chip, a system-on-chip, or a system-on-chip.
  • FIG. 15 is a schematic block diagram of a communication system 1500 according to an embodiment of the present application. As shown in FIG. 15, the communication system 1500 includes a first terminal device 1510 and other terminal devices 1520.
  • the first terminal device 1510 can be used to implement the corresponding function implemented by the first terminal device in the above method
  • the other terminal device 1520 can be used to implement the corresponding function implemented by the other terminal device in the above method.
  • I won’t repeat it here.
  • the processor of the embodiment of the present application may be an integrated circuit chip with signal processing capability.
  • the steps of the foregoing method embodiments can be completed by hardware integrated logic circuits in the processor or instructions in the form of software.
  • the above-mentioned processor may be a general-purpose processor, a digital signal processor (Digital Signal Processor, DSP), an application specific integrated circuit (ASIC), a ready-made programmable gate array (Field Programmable Gate Array, FPGA) or other Programming logic devices, discrete gates or transistor logic devices, discrete hardware components.
  • DSP Digital Signal Processor
  • ASIC application specific integrated circuit
  • FPGA Field Programmable Gate Array
  • the methods, steps, and logical block diagrams disclosed in the embodiments of the present application can be implemented or executed.
  • the general-purpose processor may be a microprocessor or the processor may also be any conventional processor or the like.
  • the steps of the method disclosed in the embodiments of the present application can be directly embodied as being executed and completed by a hardware decoding processor, or executed and completed by a combination of hardware and software modules in the decoding processor.
  • the software module can 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 electrically erasable programmable memory, registers.
  • 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 in the embodiments 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 can be read-only memory (Read-Only Memory, ROM), programmable read-only memory (Programmable ROM, PROM), erasable programmable read-only memory (Erasable PROM, EPROM), and electrically available Erase programmable read-only memory (Electrically EPROM, EEPROM) or flash memory.
  • the volatile memory may be a random access memory (Random Access Memory, RAM), which is used as an external cache.
  • RAM random access memory
  • SRAM static random access memory
  • DRAM dynamic random access memory
  • DRAM synchronous dynamic random access memory
  • DDR SDRAM Double Data Rate Synchronous Dynamic Random Access Memory
  • Enhanced SDRAM, ESDRAM Enhanced Synchronous Dynamic Random Access Memory
  • Synchronous Link Dynamic Random Access Memory Synchronous Link Dynamic Random Access Memory
  • DR RAM Direct Rambus RAM
  • the memory in the embodiment of the present application may also be 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) and so on. That is to say, the memory in the embodiments of the present application is intended to include but not limited to these and any other suitable types of memory.
  • the embodiments of the present application also provide a computer-readable storage medium for storing computer programs.
  • the computer-readable storage medium can be applied to the network device in the embodiment of the present application, and the computer program causes the computer to execute the corresponding process implemented by the network device in each method of the embodiment of the present application.
  • the computer program causes the computer to execute the corresponding process implemented by the network device in each method of the embodiment of the present application.
  • the computer-readable storage medium can be applied to the mobile terminal/terminal device in the embodiment of the present application, and the computer program causes the computer to execute the corresponding process implemented by the mobile terminal/terminal device in each method of the embodiment of the present application , For the sake of brevity, I won’t repeat it here.
  • the embodiments of the present application also provide a computer program product, including computer program instructions.
  • the computer program product can be applied to the network device in the embodiment of the present application, and the computer program instructions cause the computer to execute the corresponding process implemented by the network device in each method of the embodiment of the present application.
  • the computer program instructions cause the computer to execute the corresponding process implemented by the network device in each method of the embodiment of the present application.
  • the computer program product can be applied to the mobile terminal/terminal device in the embodiment of the present application, and the computer program instructions cause the computer to execute the corresponding process implemented by the mobile terminal/terminal device in each method of the embodiment of the present application, For the sake of brevity, I will not repeat them here.
  • the embodiment of the present application also provides a computer program.
  • the computer program can be applied to the network device in the embodiment of the present application.
  • the computer program runs on the computer, it causes the computer to execute the corresponding process implemented by the network device in each method of the embodiment of the present application.
  • I won’t repeat it here.
  • the computer program can be applied to the mobile terminal/terminal device in the embodiment of the present application.
  • the computer program runs on the computer, the computer executes each method in the embodiment of the present application. For the sake of brevity, the corresponding process will not be repeated here.
  • the disclosed system, device, and method can be implemented in other ways.
  • the device embodiments described above are merely illustrative.
  • the division of the units is only a logical function division, and there may be other divisions in actual implementation, for example, multiple units or components may be combined It can be integrated into another system, or some features can be ignored or not implemented.
  • the displayed or discussed mutual coupling or direct coupling or communication connection may be indirect coupling or communication connection through some interfaces, devices or units, and may be in electrical, mechanical or other forms.
  • the units described as separate components may or may not be physically separated, and the components displayed as units may or may not be physical units, that is, they may be located in one place, or they may be distributed on multiple network units. Some or all of the units may be selected according to actual needs to achieve the objectives of the solutions of the embodiments.
  • the functional units in the various embodiments of the present application may be integrated into one processing unit, or each unit may exist alone physically, or two or more units may be integrated into one unit.
  • the function is implemented in the form of a software functional unit and sold or used as an independent product, it can be stored in a computer readable storage medium.
  • the technical solution of the present application essentially or the part that contributes to the existing technology 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 are used 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 methods described in the various embodiments of the present application.
  • the aforementioned storage media include: U disk, mobile hard disk, read-only memory (Read-Only Memory, ROM), random access memory (Random Access Memory, RAM), magnetic disks or optical disks and other media that can store program codes. .

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Abstract

L'invention concerne un procédé de sélection de ressources, et un dispositif, qui peuvent éviter l'apparition d'un conflit avec des ressources réservées par d'autres dispositifs terminaux, ce qui facilite une amélioration des performances de communication. Le procédé comprend les étapes suivantes : lorsqu'un premier dispositif terminal effectue une sélection de ressource initiale, ou que le premier dispositif terminal a des données arrivant et déclenche une resélection de ressource sous certaines conditions, ou que le premier dispositif terminal détermine que les ressources ainsi réservées sont préemptées avec succès par d'autres dispositifs terminaux, le premier dispositif terminal sélectionne une première ressource parmi un premier ensemble de ressources, le premier ensemble de ressources ne comprenant pas de ressources réservées par d'autres dispositifs terminaux dans une fenêtre de sélection de ressources ; et le premier dispositif terminal effectue une transmission de données sur la première ressource.
PCT/CN2019/130071 2019-12-30 2019-12-30 Procédé de sélection de ressources et dispositif WO2021134283A1 (fr)

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CN114641075A (zh) * 2022-03-16 2022-06-17 深圳市科思科技股份有限公司 数据传输方法、装置、终端设备及存储介质
CN117676722A (zh) * 2022-08-12 2024-03-08 华为技术有限公司 资源预留方法、装置及存储介质
CN117750443A (zh) * 2022-09-20 2024-03-22 华为技术有限公司 通信方法和装置
WO2024067017A1 (fr) * 2022-09-29 2024-04-04 华为技术有限公司 Procédé, appareil et système de communication
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