WO2021056222A1 - Procédé et appareil de planification de ressources - Google Patents

Procédé et appareil de planification de ressources Download PDF

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Publication number
WO2021056222A1
WO2021056222A1 PCT/CN2019/107611 CN2019107611W WO2021056222A1 WO 2021056222 A1 WO2021056222 A1 WO 2021056222A1 CN 2019107611 W CN2019107611 W CN 2019107611W WO 2021056222 A1 WO2021056222 A1 WO 2021056222A1
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Prior art keywords
information
terminal device
sub
subchannels
subchannel
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PCT/CN2019/107611
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English (en)
Chinese (zh)
Inventor
张莉莉
张佳胤
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华为技术有限公司
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Priority to CN201980100065.4A priority Critical patent/CN114342515A/zh
Priority to PCT/CN2019/107611 priority patent/WO2021056222A1/fr
Publication of WO2021056222A1 publication Critical patent/WO2021056222A1/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
    • H04W4/00—Services specially adapted for wireless communication networks; Facilities therefor
    • H04W4/30—Services specially adapted for particular environments, situations or purposes
    • H04W4/40—Services specially adapted for particular environments, situations or purposes for vehicles, e.g. vehicle-to-pedestrians [V2P]

Definitions

  • This application relates to the field of communication technology, and in particular to a resource scheduling method and device.
  • V2X vehicle-to-everything
  • vehicle-to-everything vehicle-to-everything
  • V2X vehicle networking technology
  • V2X communication refers to the communication between the vehicle and the outside world, including vehicle-to-vehicle communication (V2V), vehicle-to-pedestrian communication (V2P), and vehicle-to-infrastructure communication (vehicle to infrastructure, V2I), vehicle to network communication (vehicle to network, V2N).
  • V2V vehicle-to-vehicle communication
  • V2P vehicle-to-pedestrian communication
  • V2I vehicle-to-infrastructure communication
  • V2N vehicle to network communication
  • a terminal device can send a scheduling request (SR) to a network device, and the network device sends a transmission resource for a buffer state report (buffer state report, BSR) to the terminal device, Then the terminal device sends the BSR to the network device, and the network device sends the transmission resource for SL transmission to the terminal device.
  • SR scheduling request
  • BSR buffer state report
  • the terminal device before the terminal device uses the transmission resource for SL to transmit control information and/or data information, the terminal device also needs to detect the transmission resource to determine whether the transmission resource is available. In this case, the transmission resource may be unavailable, causing the terminal device to need to send the SR and the BSR again.
  • the embodiments of the present application provide a resource scheduling method and device, which can be applied to communication systems, such as vehicle-to-everything (V2X), workshop information interaction (long term evolution-vehicle, LTE-V), Internet of Vehicles, machine type communication (eMTC), Internet of Things (LOT), inter-machine information interaction (long term evolution-machine, LTE-M), machine to machine communication (machine to machine, M2M) ), etc., in the scheduling mode based on network equipment, to avoid the waste of signaling resources caused by the need for terminal equipment to send SR and BSR multiple times.
  • V2X vehicle-to-everything
  • workshop information interaction long term evolution-vehicle, LTE-V
  • eMTC machine type communication
  • LOT Internet of Things
  • inter-machine information interaction long term evolution-machine, LTE-M
  • machine to machine communication machine to machine, M2M
  • an embodiment of the present application provides a resource scheduling method.
  • the method includes: a first terminal device determines a first set of subchannels, and the first set of subchannels is used to transmit data and information on the side link SL. /Or control information, and the first set of subchannels is the set of available subchannels detected by the first terminal device on the SL; the first terminal device sends first information to the network device, and the first The information includes the information of the first set of subchannels.
  • the first terminal device first determines the first sub-channel set, so that the network device can allocate sub-channels to the first terminal device according to the first sub-channel set. After a terminal device allocates sub-channel 1 for SL transmission, the first terminal device fails to detect the sub-channel 1, and the first terminal device needs to send SR and BSR to the network device again, which causes a waste of resources; The resource utilization rate is improved, and the first terminal device does not need to send SR and BSR multiple times, which reduces the scheduling delay and ensures the effective transmission of data information and/or control information on the SL.
  • the failure of the first terminal device to detect the sub-channel can be understood as the energy threshold of the first terminal device detecting the sub-channel is lower than the threshold threshold, or it can also be understood as the first terminal device detecting the sub-channel.
  • the sub-channel is busy, etc.
  • the embodiment of the present application does not limit the method of detecting the sub-channel failure.
  • detecting the sub-channel by the first terminal device can also be understood as the first terminal device monitoring the sub-channel.
  • the first information further includes information used to indicate the location of the first terminal device.
  • the location of the first terminal device can be understood as the absolute geographic location of the first terminal device, or can also be understood as the area identification of the first terminal device, etc.
  • the expression method of the device location is not limited.
  • the first information further includes a target identifier, and the target identifier is used to indicate at least one of a unicast service, a multicast service, or a broadcast service.
  • the target identifier can be used to enable the network device to perform corresponding scheduling processing, for example, the sub-channel set A corresponding to unicast services, the sub-channel set B corresponding to multicast services, and the sub-channel set C corresponding to broadcast services. Improve the efficiency of network equipment scheduling.
  • the first set of subchannels includes one or more subchannels
  • the information of the first set of subchannels includes indexes of the one or more subchannels.
  • the index (index) may also be understood as an identifier, that is, the information of the first subchannel set includes the identifier of the one or more subchannels.
  • the index of the one or more sub-channels allows the network device to know which sub-channels the first terminal device determines are the available sub-channels, which improves the efficiency of the network device to interpret information, so that the first terminal device and the network device maintain information Consistency.
  • the information of the first sub-channel set further includes the priority of the one or more sub-channels.
  • the priority of the one or more sub-channels allows the network device to allocate available sub-channels to the first terminal device according to actual conditions; for example, the information of the first sub-channel set includes the priorities of multiple sub-channels .
  • the network device can allocate sub-channels to the first terminal device according to the priorities of the multiple sub-channels, avoiding allocating low-priority sub-channels to the first terminal device, and wasting high-priority sub-channels. The efficiency of sub-channel allocation is improved.
  • the first information is a buffer status report BSR media access layer control element (medium access control control element, MAC CE), and the BSR MAC CE is used to report the amount of data to be transmitted in the SL .
  • BSR media access layer control element medium access control control element, MAC CE
  • the amount of data to be transmitted is the amount of data transmitted by the first terminal device to other terminal devices, that is, the amount of data to be transmitted is the amount of data transmitted by the first terminal device through SL The amount of data.
  • the method further includes: the first terminal device sends second information to the second terminal device, where the second information is used to indicate that the first subchannel is reserved.
  • the first terminal device sends the second information to the second terminal device, so that the second terminal device can avoid using the sub-channels in the first sub-channel set; avoiding the first terminal device to determine When the sub-channels in the first sub-channel set can be used, the sub-channels in the first sub-channel set are used by the second terminal device; thereby improving the efficiency of the first terminal device in using the first sub-channel set.
  • the second information is sidelink control information (sidelink control information, SCI).
  • the SCI can be understood as the second SCI, and the second SCI does not include the MCS.
  • the SCI is also used to indicate the duration information for reserving the first set of subchannels.
  • the second terminal device can know in time how long the first sub-channel set needs to be reserved, so that the first sub-channel set can be reserved.
  • the second terminal device can use the first subchannel set in time, which improves the first subchannel set. The utilization rate of a set of sub-channels.
  • the second information is a sounding reference signal (SRS) or a preamble code.
  • SRS sounding reference signal
  • an embodiment of the present application provides a resource scheduling method.
  • the method includes: a network device receives first information sent by a first terminal device, where the first information includes information about a first set of subchannels, and the first The sub-channel set is the set of available sub-channels detected by the first terminal device on the side link SL; the network device allocates target sub-channels to the first terminal device according to the information of the first sub-channel set A channel set, where the target sub-channel set is used by the first terminal device to transmit data information and/or control information on the SL.
  • the first information further includes information for indicating the location of the first terminal device; the network device serves the first terminal device according to the information of the first subchannel set Allocating the target sub-channel set includes: the network device allocates the target sub-channel set to the first terminal device according to the information of the first sub-channel set and the information of the location of the first terminal device.
  • the first information further includes a target identifier, and the target identifier is used to indicate at least one of a unicast service, a multicast service, or a broadcast service;
  • Allocating a target subchannel set for the first terminal device with the information of a subchannel set includes: the network device assigns the first subchannel set to the first subchannel set according to the information of the first subchannel set and the subchannel set corresponding to the target identifier. The terminal device allocates the target sub-channel set.
  • the first set of subchannels includes one or more subchannels
  • the information of the first set of subchannels includes indexes of the one or more subchannels.
  • the first information is a buffer status report BSR media access layer control element MAC CE
  • the BSR MAC CE is used to report the amount of data to be transmitted by the SL.
  • an embodiment of the present application provides a resource scheduling method.
  • the method includes: a first terminal device detects whether a first set of sub-channels is available, wherein the first set of sub-channels passes through the first set of sub-channels corresponding to the first reference resource.
  • a scheduling request SR is obtained, and the first sub-channel set is used to transmit data information and/or control information on the side link SL; when the first sub-channel set is not available, the first terminal device is 2.
  • the second uplink information is sent to the network device on the reference resource, the second uplink information is used to request the network device to allocate a second set of subchannels, and the second set of subchannels is used for transmission on the side link SL Data information and/or control information, where the second uplink information includes: a second scheduling request SR, or a second buffer status report BSR.
  • the first terminal device may apply to the network device for the second sub-channel set through the second uplink information; that is to say, The first terminal device can reapply for the sub-channel set through the second uplink information, thereby increasing the speed of the first terminal device re-acquiring the sub-channel set, and reducing the scheduling delay as much as possible.
  • the method further includes: the first terminal device sends to the network device through the first reference resource The first SR.
  • the second reference resource is predefined, or the second reference resource is configured by the network device through signaling.
  • an embodiment of the present application provides a resource scheduling method, including: a network device receives second uplink information sent by a first terminal device through a second reference resource, and the second uplink information is used to request the network device to allocate A second set of subchannels, where the second set of subchannels is used to transmit data information and/or control information on the side link SL, and the second uplink information includes: a second scheduling request SR, or a second buffer Status report BSR; the network device allocates the second set of subchannels to the first terminal device.
  • the method before the network device receives the second uplink information sent by the first terminal device through the second reference resource, the method further includes: the network device receives the first terminal device through the second reference resource. A first SR sent with reference to a resource; the network device allocates a first set of subchannels to the first terminal device.
  • an embodiment of the present application provides a resource scheduling method, including: a first terminal device receives fourth downlink control information DCI sent by a network device, where the fourth DCI includes information about one or more candidate subchannel sets; The first terminal device determines a third sub-channel set from the one or more candidate sub-channel sets according to the monitoring result; the first terminal device transmits on the third sub-channel set transmission side uplink SL Data information and/or control information.
  • the first terminal device receives information including one or more candidate subchannel sets, so that the first terminal device can determine the available subchannel set from the one or more subsequent subchannel sets. Therefore, through one or more candidate subchannel sets, the efficiency of determining the subchannel set by the first terminal device is improved, the efficiency of data information and/or control information transmission is further improved, and the transmission delay is reduced.
  • the method further includes: the first terminal device sends feedback information to the network device, where the feedback information includes information of the third subchannel set.
  • the feedback information can be used to make the network device know which sub-channel set is used by the first terminal device, so that the network device can release the unused sub-channel set to prevent other terminal devices from being unable to use the sub-channel set.
  • the unused sub-channel set avoids waste of resources, thereby improving the utilization rate of the sub-channel set.
  • the information of the third subchannel set includes an identifier of the third subchannel set.
  • the fourth DCI further includes feedback reference resource information
  • sending, by the first terminal device, the feedback information to the network device includes: the first terminal device uses the feedback reference resource Sending the feedback information to the network device.
  • the feedback reference resource can be understood as a time-frequency resource used to transmit feedback information.
  • an embodiment of the present application provides a resource scheduling method, including: a network device receives a first buffer status report BSR sent by a first terminal device; the network device sends fourth downlink control information to the first terminal device DCI, the fourth DCI includes information of one or more candidate subchannel sets.
  • the method further includes: the network device receives feedback information sent by the first terminal device, where the feedback information includes information of the third subchannel set.
  • the information of the third subchannel set includes an identifier of the third subchannel set.
  • an embodiment of the present application provides a terminal device.
  • the terminal device includes a processing unit and a transceiving unit, and the processing unit is configured to perform the corresponding operations shown in the first, third, or fifth aspects.
  • Method, the transceiving unit is used to execute the corresponding method as shown in the first aspect, the third aspect or the fifth aspect.
  • an embodiment of the present application provides a network device.
  • the network device includes a processing unit and a transceiving unit.
  • the processing unit is configured to perform the corresponding operations shown in the second, fourth, or sixth aspects.
  • Method, the transceiving unit is used to execute the corresponding method as shown in the second aspect, the fourth aspect or the sixth aspect.
  • an embodiment of the present application provides a communication device.
  • the communication device includes a processor and a memory.
  • the memory is used to store computer-executable instructions; the processor is used to execute the computer-executable instructions stored in the memory. So that the communication device executes the corresponding method as shown in the first aspect, the third aspect or the fifth aspect.
  • an embodiment of the present application provides a communication device, the communication device includes a processor and a memory, the memory is used to store computer-executable instructions; the processor is used to execute the computer-executable instructions stored in the memory, So that the communication device executes the corresponding method as shown in the second aspect, the fourth aspect or the sixth aspect.
  • an embodiment of the present application provides a communication device.
  • the communication device includes a processor and an interface circuit.
  • the interface circuit is configured to receive and transmit code instructions to the processor;
  • the code instructions are used to perform the corresponding method as shown in the first aspect, the third aspect, or the fifth aspect.
  • an embodiment of the present application provides a communication device.
  • the communication device includes a processor and an interface circuit.
  • the interface circuit is configured to receive code instructions and transmit them to the processor;
  • the code instructions are used to perform the corresponding method as shown in the second aspect, the fourth aspect, or the sixth aspect.
  • an embodiment of the present application provides a communication system.
  • the communication system includes a terminal device and a network device.
  • the terminal device is used to perform the corresponding operations shown in the first aspect, the third aspect, or the fifth aspect.
  • Method The network device is used to perform the corresponding method shown in the second aspect, the fourth aspect or the sixth aspect.
  • an embodiment of the present application provides a readable storage medium, the readable storage medium is used to store instructions, and when the instructions are executed, the first aspect, the third aspect, or the fifth aspect The method is implemented.
  • an embodiment of the present application provides a readable storage medium, the readable storage medium is used to store instructions, and when the instructions are executed, the second aspect, the fourth aspect, or the sixth aspect The method is implemented.
  • embodiments of the present application provide a computer program product including instructions, which when executed, enable the method described in the first, third, or fifth aspect to be implemented.
  • embodiments of the present application provide a computer program product including instructions, which when executed, enable the method described in the second, fourth, or sixth aspect to be implemented.
  • FIG. 1 is a schematic diagram of a communication system provided by an embodiment of the present application.
  • Fig. 2a is a schematic diagram of a side link communication scenario provided by an embodiment of the present application.
  • FIG. 2b is a schematic diagram of a side link communication scenario provided by an embodiment of the present application.
  • Figure 2c is a schematic diagram of a side link communication scenario provided by an embodiment of the present application.
  • Figure 2d is a schematic diagram of a side link communication scenario provided by an embodiment of the present application.
  • Figure 2e is a schematic diagram of a side link communication scenario provided by an embodiment of the present application.
  • 2f is a schematic diagram of a side link communication scenario provided by an embodiment of the present application.
  • 2g is a schematic diagram of a side link communication scenario provided by an embodiment of the present application.
  • FIG. 3 is a schematic flowchart of a resource scheduling process provided by an embodiment of the present application.
  • FIG. 4 is a schematic flowchart of a resource scheduling process provided by an embodiment of the present application.
  • FIG. 5 is a schematic flowchart of a resource scheduling method provided by an embodiment of the present application.
  • FIG. 6 is a flowchart of an interaction method provided by an embodiment of the present application.
  • FIG. 7 is a schematic diagram of the format of a BSR provided by an embodiment of the present application.
  • FIG. 8 is a schematic diagram of a BSR format provided by an embodiment of the present application.
  • FIG. 9 is a schematic flowchart of a resource scheduling method provided by an embodiment of the present application.
  • FIG. 10 is a schematic flowchart of a resource scheduling method provided by an embodiment of the present application.
  • FIG. 11 is a schematic structural diagram of a communication device provided by an embodiment of the present application.
  • FIG. 12 is a schematic structural diagram of a communication 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 communication device provided by an embodiment of the present application.
  • FIG. 15 is a schematic structural diagram of a communication device provided by an embodiment of the present application.
  • FIG. 16 is a schematic structural diagram of a communication device provided by an embodiment of the present application.
  • FIG. 17 is a schematic structural diagram of a terminal device provided by an embodiment of the present application.
  • FIG. 18 is a schematic structural diagram of a network device provided by an embodiment of the present application.
  • At least one (item) refers to one or more
  • “multiple” refers to two or more than two
  • “at least two (item)” refers to two or three And three or more
  • "and/or” is used to describe the association relationship of the associated objects, indicating that there can be three kinds of relationships, for example, "A and/or B” can mean: there is only A, only B and A at the same time And B three cases, where A, B can be singular or plural.
  • the character “/” generally indicates that the associated objects before and after are in an "or” relationship.
  • At least one item (a) refers to any combination of these items, including any combination of a single item (a) or a plurality of items (a).
  • at least one of a, b, or c can mean: a, b, c, "a and b", “a and c", “b and c", or "a and b and c" ", where a, b, and c can be single or multiple.
  • the communication system used in this application may be understood as a wireless cellular communication system, or as a wireless communication system based on a cellular network architecture, or may also be other types of communication systems in the future, and so on.
  • Fig. 1 is a schematic diagram of a communication system provided by an embodiment of the present application, and the solution in the present application can be applied to the communication system.
  • the communication system may include at least one network device, and only one is shown, such as the next generation Node B (gNB) in the figure; and one or more terminal devices connected to the network device, as shown in the figure Terminal device 1 and terminal device 2.
  • gNB next generation Node B
  • the network device may be a device that can communicate with a terminal device.
  • the network device can be any device with wireless transceiver functions, including but not limited to a base station.
  • the base station may be a gNB, or the base station may be a base station in a future communication system.
  • the network device may also be an access node, a wireless relay node, a wireless backhaul node, etc. in a wireless fidelity (WiFi) system.
  • the network device may also be a wireless controller in a cloud radio access network (cloud radio access network, CRAN) scenario.
  • the network device may also be a wearable device or a vehicle-mounted device.
  • the network device may also be a small station, a transmission reference point (TRP), etc.
  • TRP transmission reference point
  • Terminal equipment may also be referred to as user equipment (UE), terminal, and so on.
  • a terminal device is a device with wireless transceiver function, which can be deployed on land, including indoor or outdoor, handheld, wearable, or vehicle-mounted; it can also be deployed on the water, such as a ship, etc.; it can also be deployed in the air, for example, in the air. Airplanes, balloons, or satellites.
  • Terminal devices can be mobile phones, tablets, computers with wireless transceiver functions, virtual reality (VR) terminal devices, augmented reality (AR) terminal devices, industrial control (industrial control) Wireless terminals in ), wireless terminals in self-driving, wireless terminals in remote medical, wireless terminals in smart grid, and wireless terminals in transportation safety , Wireless terminals in smart cities, wireless terminals in smart homes, etc.
  • VR virtual reality
  • AR augmented reality
  • industrial control industrial control
  • Wireless terminals in wireless terminals in self-driving
  • wireless terminals in remote medical wireless terminals in smart grid
  • wireless terminals in transportation safety Wireless terminals in smart cities, wireless terminals in smart homes, etc.
  • the communication system shown in FIG. 1 includes a network device (gNB) and a terminal device 1 and a terminal device 2.
  • the terminal device 1 and the terminal device 2 can also use device-to-device (device to device, D2D) technology or vehicle-to-device Any thing communication (vehicle-to-everything, V2X) technology for communication.
  • D2D device to device
  • V2X vehicle-to-device Any thing communication
  • the following will take the terminal device 1 and the terminal device 2 in NR-V2X as an example to specifically describe the communication scenario of the corresponding resource scheduling method provided in the embodiment of the present application.
  • FIG. 1 can be applied to communication scenarios of other embodiments of the present application, and details are not described herein again. For example, it can be applied to the resource scheduling method embodiments shown in FIG. 5, FIG. 9, and FIG. 10.
  • FIG. 2a to FIG. 2g respectively are schematic diagrams of a sidelink communication scenario provided by an embodiment of the application.
  • both the terminal device 1 and the terminal device 2 are outside the cell coverage.
  • the terminal device 1 is within the coverage area of the cell, and the terminal device 2 is outside the coverage area of the cell.
  • the terminal device 1 and the terminal device 2 are both in the coverage of the same cell, and are in a public land mobile network (PLMN), such as PLMN1.
  • PLMN public land mobile network
  • the terminal device 1 and the terminal device 2 are in a PLMN such as PLMN1, but are in different cell coverage areas.
  • the terminal device 1 and the terminal device 2 are in different PLMNs and different cells, and the terminal device 1 and the terminal device 2 are respectively in the common coverage area of the two cells.
  • terminal device 1 is in PLMN1
  • terminal device 2 is in PLMN2.
  • the terminal device 1 and the terminal device 2 are in different PLMNs and different cells respectively, and the terminal device 1 is in the common coverage area of the two cells, and the terminal device 2 is in the coverage area of the serving cell.
  • the terminal device 1 and the terminal device 2 are in different PLMNs and different cells, and the terminal device 1 and the terminal device 2 are respectively in the coverage of their respective serving cells.
  • V2X vehicle-to-everything
  • D2D technology it can be applied to social applications based on proximity characteristics, such as content sharing, interactive games and other nearby terminal devices using D2D for data transmission. It can also solve the problem of damage to the communication infrastructure caused by natural disasters and interruption of communication and obstacles to rescue. For example, in this scenario, through D2D, wireless communication can still be established between two neighboring terminal devices. For another example, it is also possible to push information such as product discounts, promotions, theater previews, etc., to users based on D2D.
  • the embodiment of the present application does not uniquely limit the scenes to which D2D is applied.
  • SL sidelink
  • a terminal device sends a scheduling request (SR) to the network device, and the network device sends a buffer state report (buffer state report) to the terminal device. , BSR), and then the terminal device sends the BSR to the network device, and the network device sends the resource for SL transmission to the terminal device.
  • SR scheduling request
  • BSR buffer state report
  • the terminal equipment can perform resource scheduling based on the resources determined by the network equipment.
  • LBT LBT
  • the terminal device still needs to listen before talk before transmitting. , LBT operation to determine whether the allocated resources are available. If the terminal device determines that the allocated resources are not available, the SR and BSR sent by the terminal device and the scheduling decision and resource allocation of the network device will all be wasted. It can be understood that the above unlicensed spectrum is only an example, and there may be other scenarios in actual applications that require terminal devices to perform LBT operations.
  • FIG. 4 is an interaction flow corresponding to FIG. 3, and FIG. 4 is a flowchart of how terminal device 1 interacts with network devices in mode1, and how terminal device 1 interacts with terminal device 2 .
  • the terminal device 1 can send an SR to the network device, and the network device issues downlink control information (DCI), and the DCI can be used to indicate the data to be transmitted on the SL
  • DCI downlink control information
  • the transmission resource of the buffer state report (buffer state report, BSR) (also referred to as the buffer state report) of the amount of data; then the terminal device 1 uses the indicated transmission resource of the BSR to transmit the amount of data to be transmitted on the SL
  • BSR buffer state report
  • the upper sends the BSR to the network device, and the network device issues DCI again.
  • the DCI is used to indicate the transmission resource for the data to be transmitted on the SL; wherein the transmission resource for the data to be transmitted on the SL is usually performed through sub-channels Indicates that the transmission resource usually includes at least one of resources used for the physical sidelink control channel (PSCCH) and resources used for the physical sidelink shared channel (PSSCH) ;
  • the terminal device 1 can communicate with the terminal device 2 through the PSCCH for control information, and/or communicate with the terminal device 2 through the PSSCH for data information.
  • the terminal device 1 In the unlicensed spectrum, after the terminal device 1 receives the set of sub-channels issued by the network device for transmitting data information and/or control information, the terminal device 1 also needs to detect whether the set of sub-channels is available. If the set is unavailable, the terminal device 1 also needs to re-send the SR and BSR to the network device to apply for the sub-channel set from the network device again; in this case, the sub-channel set applied for by the terminal device 1 may still be unavailable. Therefore, the present application provides a resource scheduling method, which can effectively prevent the terminal device 1 from sending SR, BSR, etc. multiple times, and avoid resource waste.
  • scheduling process shown above is only an example, and the background of the resource scheduling method provided in the embodiment of the present application is not limited to the scheduling process shown above.
  • Listen before talk also known as listen before talk
  • CSMA carrier sense multiple access
  • LAA licensed spectrum assisted access
  • eLAA enhanced licensed spectrum in version 13 (release13) and version 14 (release14) respectively.
  • the enhanced LAA (eLAA) technology that is, the non-independent deployment of the LTE/LTE-A system on the unlicensed spectrum, and the maximum possible use of unlicensed spectrum resources with the assistance of the licensed spectrum.
  • the communication equipment in the communication system deployed on the unlicensed spectrum uses the wireless resources in a competitive manner, that is, the communication device first monitors the unlicensed spectrum before sending a signal Whether it is idle, for example, judge the busy or idle state of the channel by the received power on the unlicensed spectrum. If the received power is less than or equal to a certain threshold, the channel in the unlicensed spectrum is considered to be in an idle state and can be sent on the unlicensed spectrum Signal, otherwise no signal is sent. This mechanism of listening first and sending it later is called the LBT mechanism.
  • the LBT mechanism is currently used to monitor idle channels. When the unlicensed band channels are monitored, the channels are occupied. When it indicates that the LBT fails, no signal is sent. Only when the unlicensed frequency band channel is monitored to be free, it indicates that the LBT is successful, and the communication device will then send the signal.
  • the sending device can send a channel occupation signal to other surrounding devices.
  • the channel occupation signal can be called channel reservation in different embodiments. Signal or channel utilization (utilization) signal.
  • the channel occupancy signal is used to indicate to other devices the transmission time that the sending device needs to occupy on the competing channel, that is, the channel occupancy time, so as to avoid collisions caused by other devices transmitting data on the channel to improve communication reliability And communication efficiency.
  • the sending device is the aforementioned communication device capable of LBT, which may be a terminal device. Specifically, if the device that initiates the LBT process is a terminal device, then the sending device is a terminal device.
  • the channel occupancy time can be in microseconds ( ⁇ s) as a unit, or orthogonal frequency division multiplexing (OFDM) symbols can be used as a unit, a slot can also be used as a unit, or it can be Take mini-slot as the unit, and so on.
  • the aforementioned sub-carrier interval corresponding to the OFDM symbol or slot may be the sub-carrier interval pre-defined by the standard, or may be the same as the sub-carrier interval of the channel-occupied signal.
  • a set of sub-channels can be understood as one or more sub-channels. That is to say, the sub-channel set can be understood as one sub-channel or multiple sub-channels.
  • the embodiment of the present application does not limit the number of sub-channels included in the sub-channel set.
  • N physical resource blocks (PRBs) may be divided into one subchannel, where the N PRBs may be continuous PRBs or discontinuous PRBs, etc., which is not limited in the embodiment of the present application.
  • N is a positive integer.
  • a physical subchannel can be composed of a time-frequency two-dimensional structure of 12 subcarriers ⁇ 1 slot (slot), and one slot can be 14 orthogonal frequency division multiplexing (OFDM).
  • the time domain can be a slot, or a mini-slot, or M symbols, etc., where M is a positive integer greater than or equal to 1 and less than or equal to 14.
  • N can be any integer less than or equal to 12. It can be understood that the continuous PRB can be understood as a continuous layer from PRB(M) to PRB(N), the M is less than N, and M and N are positive integers.
  • the terminal device can detect whether the subchannel is available according to the signal energy received on the subchannel or the signal energy detected/monitored.
  • the signal energy includes any one of received signal strength indication (RSSI), reference signal receiving power (RSRP), or signal to interference plus noise ratio (SINR) .
  • RSSI received signal strength indication
  • RSRP reference signal receiving power
  • SINR signal to interference plus noise ratio
  • a terminal device when a terminal device detects sub-channel 1, it can first interpret the quality of service (QoS) information contained in the control information from the control information sent by the detected surrounding terminal devices, and according to the QoS of the data to be transmitted. The information is compared with the QoS information of the data to be transmitted on the detected subchannel 1, and the threshold threshold is determined according to the above two QoS information.
  • QoS quality of service
  • the QoS information contained in the control information is the QoS information of the to-be-sent data of the surrounding terminal equipment.
  • meeting the corresponding threshold threshold can be understood as the detected signal energy is less than or equal to the threshold threshold.
  • the detected signal energy can be judged based on any one or more of the above RSSI, RSRP, or SINR, or based on the signal strength of the detected SCI, or the signal strength of the detected PSSCH. And so on, the embodiment of the present application does not limit it.
  • the signal energy received on the subchannel is the detected/monitored signal strength of the PSSCH, which may specifically be: detecting the PSSCH obtained from the SCI using the subchannel to obtain the PSSCH using the subchannel Signal strength.
  • the QoS information in this application may also be referred to as QoS level information, or may also be referred to as service priority information, etc.
  • the specific name of the QoS information is not limited in the embodiment of this application.
  • the QoS information includes at least one of priority (prose per-packet priority, PPPP), or N quality index (quality index, QI), and other related parameters used to indicate QoS.
  • the threshold value is a threshold value determined according to the QoS information of both the detected terminal device and the detected terminal device.
  • the threshold value may be pre-configured or configured by the network device to the terminal device through RRC signaling. . It can be understood that in the embodiments of the present application, detection, reception, or monitoring can be interchanged.
  • the above method for detecting whether a subchannel is available can also be applied to a subchannel set, for example, averaging the detected signal energy of all subchannels included in the subchannel set. That is, the linear average or weighted average of the detected signal energy of all sub-channels included in the sub-channel set will be regarded as the final detected signal energy of the sub-channel set. For example, when the set of sub-channels includes sub-channels 1, 3, and 5, the average value of the signal energy detected by the three sub-channels is obtained.
  • FIG. 5 is a schematic flowchart of a resource scheduling method provided by an embodiment of the present application. As shown in FIG. 5, the resource scheduling method includes:
  • the terminal device 1 Before a terminal device 1 detects an unlicensed spectrum and applies for a set of sub-channels for transmitting SL data from a network device, the terminal device 1 determines a first set of sub-channels.
  • the first set of sub-channels can be understood as the available sub-channels monitored or detected by the terminal device 1 on the side link SL (or directly connected link), and the available sub-channels are idle sub-channels. . That is, the first set of subchannels can be understood as the current detected energy on the subchannels included in the first set of subchannels is less than a preset threshold.
  • terminal device 1 and terminal device 2 can use the first set of subchannels to transmit data information, or use the first set of subchannels to transmit control information, or use the The first set of subchannels transmits data information and control information.
  • the control information can be understood as PSCCH, and the PSCCH carries sidelink control information (SCI).
  • the first subchannel set includes one or more subchannels, and the multiple subchannels may be consecutive multiple subchannels, or may be discontinuous multiple subchannels, which is not limited in the embodiment of the present application.
  • the method for the terminal device 1 to detect the first subchannel set can refer to the foregoing embodiment, which will not be described in detail here.
  • the terminal device 1 sends a channel occupation notification or a channel reservation notification.
  • the terminal device 1 can send a channel occupation notification or a channel reservation notification to any one or more of the surrounding terminal devices, such as the terminal device 2, or the terminal device 3, or the terminal device 4, so that the surrounding The terminal device avoids using the first set of subchannels. For example, terminal device 1 determines the first sub-channel set in slot 1, but detects that terminal device 3 is periodically using the first sub-channel set and will use the first sub-channel set in slot 3. Even if the network device allocates the first sub-channel set to the terminal device 1, the terminal device 1 still cannot use the first sub-channel set.
  • the terminal device 3 can know that the terminal device 1 wants to use the first sub-channel set after receiving the channel occupation notification.
  • the terminal device 3 can avoid using the first set of subchannels.
  • terminal device 1 determines the first sub-channel set in slot 1, but surrounding terminal devices are also detecting at the same time. Therefore, once terminal device 1 determines the first channel set and immediately sends a channel occupancy notification, the surrounding terminal devices For example, after receiving the channel occupation notification, the terminal device 3 can know that the terminal device 1 wants to use the first subchannel set, so the terminal device 3 can avoid using the first subchannel set.
  • the channel reservation notification means that the terminal device 1 has reserved and will occupy the first set of subchannels, and surrounding terminal devices need to reserve the first set of subchannels for the terminal device 1, and the channel occupancy notification may indicate that the terminal device 1 Device 1 will occupy the first set of sub-channels.
  • the expressions are inconsistent, the essence of the channel reservation notification and the channel occupancy notification are the same.
  • the form of the terminal device 1 sending the channel occupation notification or the channel reservation notification may include: the terminal device 1 sends second information to surrounding terminal devices such as the terminal device 2, and the second information may be used to indicate the first sub-channel set Is reserved, or the second information can be used to indicate that the first subchannel set is occupied.
  • the second information indicates that the first subchannel set is reserved, it may indicate that the terminal device 2 needs to reserve the first subchannel set, and when the second information indicates that the first subchannel set is occupied, it may Indicates that the terminal device needs to occupy the first set of subchannels.
  • the embodiment of the present application provides two examples to illustrate the specific form of the second information, as follows:
  • the second information is a sounding reference signal (SRS) or a preamble code.
  • SRS sounding reference signal
  • the terminal device 1 may send the second information on the first subchannel set determined above.
  • the preamble code or SRS can be sent in the form of broadcast, the preamble code and the SRS can be generated according to a root sequence.
  • the terminal device 1 may stop sending the above-mentioned preamble code or SRS after receiving the DCI from the network device (the second DCI in FIG. 4), and the terminal device 1 sends the first SCI to the terminal device according to the DCI 2. And the data information transmission on the side link with the terminal device 2.
  • the first SCI is used to schedule data information on the side uplink.
  • the second information shown in FIG. 6 is that the second information is sent to the terminal device 2 after the terminal device 1 sends the BSR, but the embodiment of the present application does not make any difference as to when the second information is sent. limited.
  • Example 2 The second information is sidelink control information (SCI).
  • SCI sidelink control information
  • the terminal device 1 Before the terminal device 1 receives the DCI sent from the network device, the terminal device 1 may periodically send the second SCI.
  • the second SCI may also be used to indicate the reserved duration information of the first subchannel set, and the reserved duration information of the first subchannel set may be a channel utilization indicator (CUI).
  • the CUI may be used to indicate the length of time that the first sub-channel set will be occupied, or it may also be understood as the reserved time length of the first sub-channel set.
  • the duration indicated by the CUI may be any duration divided according to the unit of the time domain resource.
  • the unit of the time domain resource can be any one or a combination of OFDM symbols, mini-slots, or slots.
  • the CUI may indicate 10 slots or 5 slots, and so on.
  • the CUI can be continuous or discontinuous.
  • the second SCI does not include data scheduling information, for example, the second SCI does not include a modulation and coding scheme (MCS). Therefore, after the terminal device 2 receives the second SCI, it can not only quickly know that the terminal device 1 needs to occupy the first sub-channel set, but also reduces the signaling overhead.
  • MCS modulation and coding scheme
  • the subchannel used for transmitting the second SCI may be defined in a specific search space.
  • the subchannel used by the terminal device 1 to send the second SCI may be one or more subchannels in the specific search space.
  • the subchannel where the control channel element (CCE)/control resource set (CORSET) used by the terminal device 1 to send the second SCI is located can be a subchannel set x in a specific search space,
  • the set of subchannels x includes one or more subchannels.
  • the terminal device 1 sends a scheduling request (scheduling request, SR) to the network device on the first reference resource.
  • SR scheduling request
  • the SR can be used to request the network device to issue the reference resource for transmitting the BSR, that is, the SR can be used to request the network device to issue the transmission resource for transmitting the BSR, or the SR can be used to request the network device to issue the reference resource for transmission Time-frequency resources of the BSR.
  • steps 502 and 503 are not limited and can be interchanged.
  • the network device receives the SR from the terminal device 1, and the network device sends a first DCI to the terminal device 1, where the first DCI may be used to indicate a third reference resource, and the third reference resource is used to transmit the BSR.
  • the terminal device 1 receives the first DCI from the network device, and sends a BSR medium access control control element (MAC CE) to the network device through the third reference resource.
  • the BSR MAC CE includes the first DCI.
  • the first set of subchannels is the set of available subchannels detected by the terminal device 1.
  • the information of the first subchannel set may include an index included in the first subchannel set.
  • the information of the first set of subchannels may also be a bitmap (bitmap), and the part marked with 1 in the bitmap is the selected one or more subchannels.
  • the bitmap length is the number of all sub-channels available for SL.
  • FIG. 7 is a schematic diagram of the format of a BSR MAC CE provided by an embodiment of the present application.
  • the terminal device 1 can use the first sub-channel set obtained by detection as the available sub-channel ID1 and/ Or the subchannel ID2 can be used to fill in the BSR MAC CE.
  • the first set of sub-channels determined by terminal device 1 is sub-channel 1 to sub-channel 5, and sub-channel 7 to sub-channel 9, then sub-channel 1 to sub-channel 5 can be filled in the available sub-channel ID1, Subchannel 7 to subchannel 9 are filled in the available subchannel ID2.
  • the first set of subchannels determined by the terminal device 1 may be continuous subchannels or discontinuous subchannels, whether the subchannels carried in the available subchannel ID1 and the available subchannel ID2 are continuous
  • the embodiment is not limited. It can be understood that sub-channel 1 to sub-channel 5, and sub-channel 7 to sub-channel 9 are the indexes of the multiple sub-channels included in the first sub-channel set.
  • the target ID (target ID) shown in FIG. 7 can also be called the destination ID (destination ID), which can be used to carry the ID of the terminal device 2; it can also be used to implicitly represent the service sent by the terminal device 1 to the terminal device 2.
  • the buffer size can be used to carry the amount of data to be transmitted, and the logical channel group (logic channel group, LCG) ID can be used to carry the logical channel or logical channel group ID of the data to be transmitted, and indicates the QoS information of the data to be transmitted.
  • the ID in this application can also be called an index. That is to say, the specific name of the target ID is not limited in the embodiment of this application. In other applications, it may also include other names, which will not be listed here. .
  • the BAR MAC CE may also include information for indicating the location of the terminal device 1.
  • the location of the terminal device 1 may be the absolute geographic coordinates of the terminal device 1 or the zone ID (zone ID) of the terminal device 1.
  • the absolute geographic coordinates may be complete coordinates, or may also be the last few digits of the complete coordinates, or may also be the coordinates obtained after processing the complete coordinates.
  • the area identification can be understood as a geographic relative identification, such as marking each adjacent area within a range to obtain the area identification. It is understandable that the labels that are farther apart can be reused when making labels.
  • the location information shown in FIG. 8 may be used to carry the location information of the terminal device 1.
  • the network device can determine whether the same idle sub-channel can be allocated to different terminal devices at the same time according to the location information of the terminal device 1.
  • the network device can allocate a sub-channel set (for example, a target sub-channel set) to the terminal device 1 according to the index of the first sub-channel set and the location information of the terminal device 1. For example, if the BSR MAC CE reported by terminal device 1 and terminal device 3 contains the same idle sub-channel, the network device obtains the location information reported by terminal device 1 and the location information reported by terminal device 3. The mutual interference situation can be judged according to the positions of the terminal device 1 and the terminal device 3. If there is less interference, the idle sub-channels can be allocated to different terminal devices at the same time.
  • a sub-channel set for example, a target sub-channel set
  • the BSR MAC CE may also include a target ID (targetID) or a destination ID (destination ID).
  • the target ID is used to indicate at least one of unicast service, multicast service or broadcast service. That is, the target ID is used to indicate which one or more of the unicast service, the groupcast service or the broadcast service is the data communication on the side link. That is, the target ID has an explicit correspondence or an implicit correspondence with at least one of a unicast service, a multicast service, or a broadcast service.
  • the correspondence may be pre-configured or configured by the network device to the terminal device through RRC signaling.
  • the network device may allocate the sub-channel set to the terminal device 1 according to the target ID and the index of the first sub-channel set.
  • the network device can allocate resources on the corresponding resource pool according to the targetID, that is, unicast service, multicast service or broadcast service can respectively correspond to different sub-channel sets, such as unicast service corresponding to sub-channel set A, multicast Service corresponding sub-channel set B, broadcast service corresponding sub-channel set C, the target ID indicates that the data communication on the side link is a unicast service, then the network device can select sub-channels from the idle sub-channels (that is, the first sub-channel set) The sub-channels included in the channel set A are allocated to the terminal device 1.
  • the network device can allocate sub-channel 5 to sub-channel 10 to the terminal device 1 use.
  • the network device can perform different scheduling processing according to the different target identifiers.
  • the scheduling processing can be different scheduling schemes, different scheduling resources, and so on.
  • network devices can perform corresponding scheduling distinctions based on the difference between unicast services, multicast services, or broadcast services indicated by the targetID, such as different modulation and coding schemes (MCS), or different resource allocation sizes, etc. .
  • the MCS allocated and used by the network device for unicast may be different from the MCS used for multicast.
  • an MCS with a lower coding rate such as 16QAM
  • 16QAM an MCS with a lower coding rate
  • 64QAM a higher coding rate
  • the size of the resource allocated and used by the network device may be different from the size of the resource used for multicast.
  • the allocated resources are relatively large, such as 3 PRBs, while for multicast, the allocated resources are relatively small, such as 2 PRBs.
  • the BSR MAC CE may also include the priority of multiple sub-channels included in the first sub-channel set.
  • the terminal device 1 may determine the priority of the first sub-channel set according to any one of RSSI, SINR, or RSRP. The priority of each sub-channel.
  • the terminal device 1 can sort the determined sub-channels by detecting the RSSI of the sub-channels to determine the priority.
  • the network device may allocate a sub-channel set to the terminal device 1 according to the priority of the one or more sub-channels. Through the priority of the one or more neutron sub-channels, the network device can allocate the idle sub-channel set (that is, the target sub-channel set) to the terminal device 1 according to the actual situation.
  • BSR MAC CE includes two sub-channel indexes, such as sub-channel 1 and sub-channel 2.
  • the network device finds that sub-channel 1 with high priority is occupied by other terminal devices or is occupied by other terminals. The device determines that it is an available sub-channel, then the network device can allocate the terminal device 1 with the sub-channel 2 with the second highest priority.
  • the network device receives the BSR MAC CE sent by the terminal device 1, and allocates a target subchannel set for the terminal device 1 according to the information included in the BSR MAC CE.
  • the target sub-channel set may include one or more sub-channels.
  • the target subchannel set is the set of subchannels determined from the first set of subchannels.
  • the network device sends a second DCI to the terminal device 1, where the second DCI includes the information of the target subchannel set.
  • the target sub-channel set is a selected sub-channel set from the available sub-channel 1 and/or the available sub-channel 2 reported from the terminal device 1.
  • the terminal device 1 receives the second DCI sent by the network device, and the terminal device 1 transmits data information and/or control information to the terminal device 2 in the target subchannel set.
  • the terminal device 1 can transmit data information on the SL with the terminal device 2 on one or more subchannels included in the target subchannel set, can also be used for the transmission of control information on the SL, and can also be used for Transmission of data information and control information on SL.
  • the terminal device 1 may transmit control information to the second terminal device 2 through the first SCI, and the first SCI includes the MCS.
  • the implementation of the embodiments of this application can make it possible to obtain the first sub-channel in time when the terminal device fails to monitor in the unlicensed spectrum based on the network device scheduling mode, avoiding the terminal device from sending SR and BSR multiple times Etc., effectively avoiding the waste of resources and avoiding the terminal equipment from re-applying for the first sub-channel, thereby also reducing the scheduling delay, and effectively ensuring the effective transmission of data in the side link.
  • the monitoring/detection in this application is performed by listening before talk (LBT).
  • the reference resources in this application are time-frequency resources.
  • BSR is used in this application.
  • BSR is usually transmitted on MAC CE, it can also be called BSR MAC CE. Therefore, it should not be used in the embodiments of this application.
  • the BSR MAC CE is understood as a restriction on BSR.
  • the embodiments of the present application in order to prevent the terminal device from sending the SR and the BSR again after the monitoring fails, also provide a resource scheduling method. For example, when the first terminal device needs to resend the SR-reapply after the LBT fails on the first sub-channel set, the first terminal device can use the second reference resource to resend the SR-reapply, so that the network device can quickly allocate The second set of subchannels.
  • the resource scheduling method includes:
  • the terminal device 1 sends the first SR to the network device through the first reference resource.
  • the first reference resource is a resource used for transmission of the first SR.
  • the first reference resource may be a time-frequency resource.
  • the first reference resource may be configured by the network device through radio resource control (Radiore Source Control, RRC) signaling.
  • RRC Radio Resource Control
  • the network device receives the first SR sent by the terminal device 1, and sends the first DCI to the terminal device 1, where the first DCI can be used for a third reference resource, and the third reference resource can be used for transmitting a BSR.
  • the first SR may also be referred to as first uplink information, etc., and the specific name of the SR is not limited in the embodiment of the present application.
  • the terminal device 1 receives the first DCI sent by the network device, and sends the first BSR to the network device on the third reference resource.
  • the network device receives the first BSR sent by the terminal device 1, and allocates the first subchannel set to the terminal device 1.
  • the network device sends a second DCI to the terminal device 1, where the second DCI may be used to indicate the first set of subchannels.
  • the first set of subchannels may be used to transmit data information and/or control information on the SL.
  • the terminal device 1 receives the second DCI sent by the network device, and detects whether the first subchannel set is available.
  • the method for the terminal device 1 to detect whether the first sub-channel set is available can refer to the foregoing embodiment, which will not be described in detail here.
  • the terminal device 1 sends second uplink information to the network device on the second reference resource.
  • the second uplink information is used to request the network device to allocate the second subchannel set.
  • the channel set is used to transmit data information and/or control information on the SL.
  • the second uplink information may include a second SR or a second BSR.
  • the difference between the second SR and the first SR is not that the time of transmission is different, but that the purpose is different.
  • the first SR is when the terminal device 1 initially applies for the network device to issue the first sub-channel set.
  • the sent SR and the second SR is the SR sent when the terminal device 1 detects that the first sub-channel set is unavailable and needs to request the network device to deliver the second sub-channel set again.
  • the difference between the first BSR and the second BSR can refer to the difference between the first SR and the second SR.
  • the first BSR is the BSR sent when the terminal device 1 first applies for the network device to issue the first sub-channel set
  • the second BSR is the terminal device 1 when it detects that the first sub-channel set is unavailable, and it needs to request the network device to issue the first sub-channel set again.
  • the second reference resource may be predefined, for example, the second reference resource is preset in a network device or a terminal device.
  • the second reference resource may also be configured by a network device through signaling, and the signaling may include at least one of RRC signaling, MAC signaling, or physical layer signaling, etc., which is not limited in the embodiment of the present application.
  • the second reference resource may be understood as a resource used for quickly applying for a new scheduling request for SL resources or a part of a resource used for quickly applying for a new scheduling request for SL resources.
  • the second reference resource can be used to detect that the first sub-channel set is unavailable in the terminal device 1, and re-send the SR to the network device on the second reference resource when the SR is re-initiated to the network device; or, the second reference resource
  • the second reference resource can be used to detect that the first sub-channel set is unavailable in the terminal device 1, and when the BSR is re-sent to the network device, the BSR is re-sent to the network device on the second reference resource.
  • the embodiment of the present application does not limit the time for the network device to configure through signaling. It may be before or after the terminal device 1 sends the first SR, or at the terminal Before or after the device 1 sends the first BSR, or before the terminal device 1 detects whether the first subchannel set is available, etc., as long as it can be configured before the terminal device 1 needs to send the SR or BSR to the network device again.
  • the network device receives the second uplink information sent by the terminal device 1, and sends a third DCI to the terminal device 1, where the third DCI includes information of the second subchannel set.
  • the terminal device 1 receives the third DCI, and transmits data information and/or control information with the terminal device 2 on the second subchannel set.
  • the first terminal device may apply to the network device for the second sub-channel set through the second uplink information; that is to say, The first terminal device can reapply for the sub-channel set through the second uplink information, thereby increasing the speed of the first terminal device re-acquiring the sub-channel set, and reducing the scheduling delay as much as possible.
  • FIG. 10 is a schematic scenario diagram of a resource scheduling method proposed in an embodiment of the present application. , The method can be shown in Figure 10, including:
  • the terminal device 1 sends a first SR to a network device in a first reference resource.
  • the network device receives the first SR sent by the terminal device 1 through the first reference resource, and sends the first DCI to the terminal device 1, where the first DCI may be used to indicate a third reference resource, and the third reference resource is used for transmission BSR.
  • the terminal device 1 sends the BSR to the network device on the third reference resource.
  • the network device receives the BSR sent by the terminal device 1 through the third reference resource, and determines one or more candidate subchannel sets.
  • the method for the network device to determine one or more candidate subchannel sets may include the network device itself monitoring the subchannel, and determining whether the subchannel is available according to the monitoring result. Whether the sub-channel can be used as the monitored signal energy is less than or equal to a threshold threshold.
  • the threshold threshold may be the same as or different from the foregoing threshold threshold. There are no restrictions in this application. That is, any threshold threshold in this application may be specific, and any threshold threshold may be different.
  • the network device sends a fourth DCI to the terminal device 1, where the fourth DCI includes information about one or more candidate subchannel sets.
  • the information of the one or more candidate subchannel sets includes the index of the one or more candidate subchannel sets.
  • the information of the one or more candidate subchannel sets may also be a bitmap, where the part marked as 1 or 0 in the bitmap is an available subchannel or subchannel set allocated to the terminal device 1.
  • the terminal device 1 receives the fourth DCI sent by the network device, and detects the available subchannel set in the one or more candidate subchannel sets, for example, the detected available subchannel set is the third subchannel set.
  • the terminal device 1 transmits data information and/or control information with the terminal device 2 on the third subchannel set.
  • the terminal device 1 sends feedback information to the network device on the feedback reference resource, where the feedback information includes the information of the third subchannel set.
  • the fourth DCI further includes feedback reference resource information
  • the feedback reference resource may be used to transmit feedback information
  • the feedback information may be used to feed back that the terminal device 1 transmits data information and/or control information to the third subchannel set.
  • Terminal equipment 2 That is, the feedback information can be used to feed back which sub-channel set of one or more candidate sub-channel sets is used by the terminal device 1.
  • the fourth DCI includes indexes of three candidate subchannel sets, such as candidate subchannel set 1, candidate subchannel set 2, and candidate subchannel set 3; the third subchannel set is candidate subchannel set 1, then feedback Information can only be fed back to index 1 of candidate subchannel set 1.
  • the feedback information may also be fed back in the order of the candidate subchannel sets included in the fourth DCI.
  • the order of the three candidate subchannel sets included in the fourth DCI is the candidate subchannel set 1, the candidate subchannel set.
  • the feedback information can be 100 (one bit represents the information of a candidate sub-channel set), or it can also be 110000, etc., Among them, 1 indicates that the candidate subchannel set 1 is the third subchannel set, 0 indicates that the candidate subchannel set 2 is not the third subchannel set, and the candidate subchannel set 3 is not the third subchannel set. It can be understood that the embodiment of the present application does not limit how many bits are used to represent the index of the candidate subchannel set.
  • the network device receives the feedback information sent by the terminal device 1, and releases the set of candidate subchannels not used by the terminal device 1.
  • the network device receives the feedback information to enable the network device to release the undetermined candidate subchannel set of the terminal device 1 in time, thereby avoiding the situation that other terminal devices cannot use the undetermined candidate subchannel set of the terminal device 1 in time .
  • the first terminal device receives information including one or more candidate subchannel sets, so that the first terminal device can determine the available subchannel set from the one or more subsequent subchannel sets. Therefore, through one or more candidate subchannel sets, the efficiency of determining the subchannel set by the first terminal device is improved, the efficiency of data information and/or control information transmission is further improved, and the transmission delay is reduced.
  • FIG. 11 is a schematic structural diagram of a communication device provided by an embodiment of the present application.
  • the communication device may be a terminal device or a chip.
  • the communication device is used to execute the resource scheduling method described in the embodiment of the present application.
  • the communication device includes:
  • the processing unit 1101 is configured to determine a first set of subchannels, where the first set of subchannels is used to transmit data information and/or control information on the side link SL, and the first set of subchannels is the first terminal device The set of available sub-channels detected on the SL;
  • the sending unit 1102 is configured to output first information, where the first information includes information of the first subchannel set.
  • the processing unit 1101 may be one or more processors, and the sending unit 1102 may It is a transmitter, for example, the transmitter can be used to send the first information to a network device.
  • the processing unit 1101 may be one or more processors, and the sending unit 1102 may be an output interface, or may be called a communication interface or an interface circuit, etc., for example, the output interface obtains the first data from the processor. A message, thereby outputting the first message.
  • the first information further includes information used to indicate the location of the first terminal device.
  • the first information further includes a target identifier, and the target identifier is used to indicate at least one of a unicast service, a multicast service, or a broadcast service.
  • the first set of subchannels includes one or more subchannels
  • the information of the first set of subchannels includes indexes of the one or more subchannels.
  • the information of the first set of subchannels further includes the priority of the one or more subchannels.
  • the first information is a buffer status report BSR media access layer control element MAC CE
  • the BSR MAC CE is used to report the amount of data to be transmitted by the SL.
  • the sending unit 1102 may also output second information, where the second information is used to indicate that the first set of subchannels is reserved.
  • the sending unit 1102 may send the second information to the second terminal device, or the sending unit 1102 may also output the second information through an output interface after acquiring the second information.
  • the embodiments of the present application do not limit specific implementation manners.
  • the second information is side link control information SCI.
  • the SCI is also used to indicate the duration information for reserving the first set of subchannels.
  • the second information is a sounding reference signal SRS or a preamble.
  • the first terminal device first determines the first sub-channel set, so that the network device can allocate sub-channels to the first terminal device according to the first sub-channel set. After a terminal device allocates sub-channel 1 for SL transmission, the first terminal device fails to detect the sub-channel 1, and the first terminal device needs to send SR and BSR to the network device again, which causes a waste of resources; The resource utilization rate is improved, and the first terminal device does not need to send SR and BSR multiple times, which reduces the scheduling delay and ensures the effective transmission of data information and/or control information on the SL.
  • FIG. 12 is a schematic structural diagram of a communication device provided by an embodiment of the present application.
  • the communication device may be a network device, or a chip, etc., as shown in FIG. 12, the communication device includes:
  • the receiving unit 1201 is configured to receive first information sent by a first terminal device, where the first information includes information of a first sub-channel set, and the first sub-channel set is detected by the first terminal device on the side link SL.
  • the processing unit 1202 is configured to allocate a target subchannel set to the first terminal device according to the information of the first subchannel set, where the target subchannel set is used by the first terminal device to transmit data information and/or control information on the SL .
  • the first information further includes information for indicating the location of the first terminal device; the processing unit 1202 is specifically configured to use the information of the first subchannel set and the first terminal device The location information allocates the target subchannel set to the first terminal device.
  • the first information further includes a target identifier, and the target identifier is used to indicate at least one of a unicast service, a multicast service, or a broadcast service;
  • the processing unit 1202 is specifically configured to Allocate a target subchannel set to the first terminal device according to the information of the first subchannel set and the subchannel set corresponding to the target identifier.
  • the first set of subchannels includes one or more subchannels
  • the information of the first set of subchannels includes indexes of the one or more subchannels.
  • the first information is a buffer status report BSR media access layer control element MAC CE
  • the BSR MAC CE is used to report the amount of data to be transmitted by the SL.
  • the processing unit 1202 when the foregoing communication device is a component that implements the foregoing functions in a network device, the processing unit 1202 may be one or more processors, and the receiving unit 1201 may be a receiver.
  • the processing unit 1202 when the above-mentioned communication device is a chip, the processing unit 1202 may be one or more processors, and the receiving unit 1201 may be an input interface, or may be called a communication interface or an interface circuit or the like.
  • FIG. 13 is a schematic structural diagram of a communication device provided by an embodiment of the present application.
  • the communication device may be a terminal device or a chip. As shown in Figure 13, the communication device includes:
  • the processing unit 1301 is configured to detect whether the first set of subchannels is available, where the first set of subchannels is obtained through a first scheduling request SR corresponding to the first reference resource, and the first set of subchannels is used for the side row chain Transmission of data information and/or control information on the road SL;
  • the sending unit 1302 when the first set of subchannels is not available, outputs second uplink information.
  • the second uplink information is used to request the network device to allocate a second set of subchannels.
  • Data information and/or control information are transmitted on the road SL, where the second uplink information includes: a second scheduling request SR, or a second buffer status report BSR.
  • the sending unit 1302 is further configured to output the first SR.
  • the second reference resource is predefined, or the second reference resource is configured by the network device through signaling.
  • the first terminal device may apply to the network device for the second sub-channel set through the second uplink information; that is to say, The first terminal device can reapply for the sub-channel set through the second uplink information, thereby increasing the speed of the first terminal device re-acquiring the sub-channel set, and reducing the scheduling delay as much as possible.
  • the processing unit 1301 may be one or more processors, and the sending unit 1302 may It is a transmitter, for example, the transmitter can be used to send the second uplink information to the network device on the second reference resource.
  • the transmitter may be used to send the first SR to the network device through the first reference resource.
  • the processing unit 1301 may be one or more processors, and the sending unit 1302 may be an output interface, or may be called a communication interface or an interface circuit, etc., for example, the output interface obtains the first data from the processor. Second uplink information, thereby outputting the second uplink information to the outside.
  • the output interface may obtain the first SR from the processor, and output the first SR externally.
  • FIG. 14 is a schematic structural diagram of a communication device provided by an embodiment of the present application.
  • the communication device may be a network device or a chip. As shown in FIG. 14, the communication device includes:
  • the receiving unit 1401 is configured to receive second uplink information sent by a first terminal device through a second reference resource, where the second uplink information is used to request the network device to allocate a second set of sub-channels, and the second set of sub-channels is used to Data information and/or control information are transmitted on the side link SL, where the second uplink information includes: a second scheduling request SR, or a second buffer status report BSR;
  • the processing unit 1402 is configured to allocate the second set of subchannels to the first terminal device.
  • the receiving unit 1401 is further configured to receive the first SR sent by the first terminal device through the first reference resource;
  • the processing unit 1402 is further configured to allocate a first set of subchannels to the first terminal device.
  • Fig. 15 is a schematic structural diagram of a communication device provided by an embodiment of the present application.
  • the communication device can be a terminal device or a chip. As shown in Fig. 15, the communication device includes:
  • the receiving unit 1501 is configured to obtain fourth downlink control information DCI, where the fourth DCI includes information about one or more candidate subchannel sets;
  • the processing unit 1502 is configured to determine a third sub-channel set from the one or more candidate sub-channel sets according to the monitoring result;
  • the sending unit 1503 is used to output data information and/or control information.
  • the processing unit 1502 may be one or more processors, and the sending unit 1503 may be a transmitter.
  • the receiving unit 1501 may be a receiver, or the sending unit 1503 and the receiving unit 1501 are integrated into one device, such as a transceiver.
  • the receiving unit 1501 may receive the fourth DCI sent by the network device, and the sending unit 1503 may send control information and/or data information to the second terminal device.
  • the processing unit 1502 can be one or more processors, the sending unit 1503 can be an output interface, and the receiving unit 1501 can be an input interface, or the sending unit 1503 and the receiving unit 1501 are integrated into one unit, for example Input and output interface.
  • the receiving unit 1501 may obtain the fourth DCI, and the sending unit 1503 may obtain data information and/or control information from the processing unit 1502, and output the data information and/or control information.
  • the sending unit 1503 is further configured to output feedback information, and the feedback information includes information of the first subchannel set.
  • the information of the first subchannel set includes an identifier of the first subchannel set.
  • the DCI also includes feedback reference resource information.
  • the sending unit 1503 may specifically send the feedback information to the network device, or may send the feedback information to the network device through the feedback reference resource.
  • the first terminal device receives information including one or more candidate subchannel sets, so that the first terminal device can determine the available subchannel set from the one or more subsequent subchannel sets. Therefore, through one or more candidate subchannel sets, the efficiency of determining the subchannel set by the first terminal device is improved, the efficiency of data information and/or control information transmission is further improved, and the transmission delay is reduced.
  • FIG. 16 is a schematic structural diagram of a communication device provided by an embodiment of the present application.
  • the communication device may be a network device or a chip. As shown in FIG. 16, the communication device includes:
  • the receiving unit 1601 is configured to receive a buffer status report first BSR sent by a first terminal device
  • the sending unit 1602 is configured to send fourth downlink control information DCI to the first terminal device, where the fourth DCI includes information about one or more candidate subchannel sets.
  • the receiving unit 1601 is further configured to receive feedback information sent by the first terminal device, where the feedback information includes information of the third subchannel set.
  • FIG. 17 is a schematic structural diagram of a terminal device 1700 according to an embodiment of the application.
  • the terminal device can perform operations of the first terminal device (terminal device 1) in the methods shown in Figures 5, 9 and 10, or the terminal device can also perform operations as shown in Figures 11, 13 and 15 Shows the operation of the communication device.
  • FIG. 17 only shows the main components of the terminal device.
  • the terminal equipment 1700 includes a processor, a memory, a radio frequency circuit, an antenna, and an input and output device.
  • the processor is mainly used to process the communication protocol and communication data, and to control the entire terminal device, execute the software program, and process the data of the software program, for example, to support the terminal device to execute the processes described in Figures 5, 9 and 10 .
  • the memory is mainly used to store software programs and data.
  • the radio frequency circuit is mainly used for the conversion of baseband signal and radio frequency signal and the processing of radio frequency signal.
  • the antenna is mainly used to send and receive radio frequency signals in the form of electromagnetic waves.
  • the terminal device 1700 may also include input and output devices, such as a touch screen, a display screen, a keyboard, etc., which are mainly used to receive data input by the user and output data to the user. It should be noted that some types of terminal devices may not have input and output devices.
  • the processor can read the software program in the storage unit, interpret and execute the software program, and process the data of the software program.
  • the processor performs baseband processing on the data to be sent, and outputs the baseband signal to the radio frequency circuit.
  • the radio frequency circuit performs radio frequency processing on the baseband signal and sends the radio frequency signal to the outside in the form of electromagnetic waves through the antenna.
  • the radio frequency circuit receives the radio frequency signal through the antenna, converts the radio frequency signal into a baseband signal, and outputs the baseband signal to the processor, and the processor converts the baseband signal into data and processes the data.
  • FIG. 17 only shows a memory and a processor. In an actual terminal device, there may be multiple processors and memories.
  • the memory may also be referred to as a storage medium or a storage device, etc., which is not limited in the embodiment of the present application.
  • the processor may include a baseband processor and a central processing unit (CPU).
  • the baseband processor is mainly used to process communication protocols and communication data, and the CPU is mainly used to process the entire terminal.
  • the equipment controls, executes the software program, and processes the data of the software program.
  • the processor may also be a network processor (network processor, NP) or a combination of CPU and NP.
  • the processor may further include a hardware chip.
  • the aforementioned hardware chip may be an application-specific integrated circuit (ASIC), a programmable logic device (PLD), or a combination thereof.
  • the above-mentioned PLD may be a complex programmable logic device (CPLD), a field-programmable gate array (FPGA), a generic array logic (GAL) or any combination thereof.
  • the memory may include volatile memory (volatile memory), such as random-access memory (RAM); the memory may also include non-volatile memory (non-volatile memory), such as flash memory (flash memory) , Hard disk drive (HDD) or solid-state drive (solid-state drive, SSD); the memory may also include a combination of the above types of memory.
  • the antenna and radio frequency circuit with the transceiving function can be regarded as the transceiving unit 1701 of the terminal device 1700, and the processor with the processing function can be regarded as the processing unit 1702 of the terminal device 1700.
  • the terminal device 1700 may include a transceiving unit 1701 and a processing unit 1702.
  • the transceiving unit may also be referred to as a transceiver, a transceiver, a transceiving device, and so on.
  • the device for implementing the receiving function in the transceiving unit 1701 can be regarded as the receiving unit
  • the device for implementing the sending function in the transceiving unit 1701 can be regarded as the sending unit, that is, the transceiving unit 1701 includes a receiving unit and a sending unit.
  • the receiving unit may also be called a receiver, a receiver, a receiving circuit, etc.
  • the sending unit may be called a transmitter, a transmitter, or a transmitting circuit, etc.
  • the transceiver unit 1701 and the processing unit 1702 may be integrated into one device or separated into different devices.
  • the processor and the memory may also be integrated into one device or separate into different devices.
  • FIG. 18 is a schematic structural diagram of a network device 1800 provided by an embodiment of this application.
  • the network device may perform the operations of the network device in the methods shown in FIGS. 5, 9 and 10, or the network device may also perform the operations of the communication device shown in FIGS. 11, 13 and 15.
  • the network device 1800 includes one or more remote radio units (RRU) 1801 and one or more baseband units (BBU) 1802.
  • the above-mentioned RRU 1801 may be called a transceiver unit, a transceiver, a transceiver circuit, or a transceiver, etc., which may include at least one antenna 1811 and a radio frequency unit 1812.
  • the above-mentioned RRU1801 part is mainly used for the transceiver of radio frequency signals and the conversion of radio frequency signals and baseband signals.
  • the above-mentioned BBU1802 part is mainly used for baseband processing and control of network equipment.
  • the above-mentioned RRU 1801 and BBU 1802 may be physically arranged together, or may be physically separated, that is, distributed network equipment.
  • the above-mentioned BBU 1802 is the control center of the network equipment, and can also be called the processing unit, which is mainly used to complete the baseband processing functions, such as channel coding, multiplexing, modulation, spread spectrum and so on.
  • the above-mentioned BBU 1802 may be composed of one or more single boards, and multiple single boards may jointly support a single access standard radio access network (such as an LTE network), or can respectively support wireless access networks of different access standards. Access to the network.
  • the aforementioned BBU 1802 further includes a memory 1821 and a processor 1822.
  • the aforementioned memory 1821 is used to store necessary messages and data.
  • the above-mentioned processor 1822 is used to control the network device to perform necessary actions, for example, to control the network device to perform the corresponding operation shown in FIG. 18.
  • the aforementioned memory 1821 and processor 1822 may serve one or more single boards. In other words, the memory and the processor can be set separately on each board.
  • the processor may be a CPU, NP, or a combination of CPU and NP.
  • the processor may further include a hardware chip.
  • the above-mentioned hardware chip may be ASIC, PLD or a combination thereof.
  • the above-mentioned PLD can be CPLD, FPGA, GAL or any combination thereof.
  • the memory may include volatile memory, such as RAM; the memory may also include non-volatile memory, such as flash memory, hard disk, or solid-state hard disk; the memory may also include a combination of the foregoing types of memory.
  • the network device shown in FIG. 18 is only an example. In specific implementation, there may be other types of network devices. Therefore, the network device shown in FIG. 18 should not be understood as a limitation to the embodiments of the present application. .
  • the process can be completed by a computer program instructing relevant hardware.
  • the program can be stored in a computer readable storage medium. , May include the processes of the foregoing method embodiments.
  • the aforementioned storage media include: ROM or random storage RAM, magnetic disks or optical disks and other media that can store program codes.

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  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Mobile Radio Communication Systems (AREA)

Abstract

Les modes de réalisation de la présente invention concernent un procédé et un appareil de planification de ressources, qui peuvent être appliqués à un système de communication tel que V2X, LTE-V, MTC, IoT, LTE-M, M2M et ainsi de suite, et qui peuvent éviter la nécessité pour un dispositif terminal d'envoyer une demande de planification (SR) et un rapport d'état de tampon (BSR) de multiples fois dans un mode de planification basé sur les dispositifs de réseau, ce qui gaspille les ressources de signalisation. Le procédé comprend les étapes suivantes : un premier dispositif terminal détermine un premier ensemble de sous-canaux, le premier ensemble de sous-canaux étant utilisé pour transmettre des informations de données et/ou des informations de commande sur une liaison latérale (SL), et le premier ensemble de sous-canaux étant un ensemble de sous-canaux disponible détecté par le premier dispositif terminal sur la SL; c'est-à-dire que le premier dispositif terminal peut déterminer à l'avance un ensemble de sous-canaux qui est disponible pour lui ; et le premier dispositif terminal envoie des premières informations à un dispositif de réseau, les premières informations comprenant des informations du premier ensemble de sous-canaux ; c'est-à-dire que le premier dispositif terminal envoie au dispositif de réseau des informations comprenant le premier ensemble de sous-canaux de telle sorte que le dispositif de réseau puisse attribuer un ensemble de sous-canaux disponible pour le premier dispositif terminal.
PCT/CN2019/107611 2019-09-24 2019-09-24 Procédé et appareil de planification de ressources WO2021056222A1 (fr)

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