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WO2020088653A1 - Procédé et dispositif permettant de déterminer des ressources de transmission - Google Patents

Procédé et dispositif permettant de déterminer des ressources de transmission Download PDF

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Publication number
WO2020088653A1
WO2020088653A1 PCT/CN2019/115029 CN2019115029W WO2020088653A1 WO 2020088653 A1 WO2020088653 A1 WO 2020088653A1 CN 2019115029 W CN2019115029 W CN 2019115029W WO 2020088653 A1 WO2020088653 A1 WO 2020088653A1
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WO
WIPO (PCT)
Prior art keywords
time
side link
terminal device
subcarrier interval
link
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Ceased
Application number
PCT/CN2019/115029
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English (en)
Chinese (zh)
Inventor
黎超
王雪松
黄海宁
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Huawei Technologies Co Ltd
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Huawei Technologies Co Ltd
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Filing date
Publication date
Application filed by Huawei Technologies Co Ltd filed Critical Huawei Technologies Co Ltd
Publication of WO2020088653A1 publication Critical patent/WO2020088653A1/fr
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W72/00—Local resource management
    • H04W72/04—Wireless resource allocation
    • H04W72/044—Wireless resource allocation based on the type of the allocated resource
    • H04W72/0446—Resources in time domain, e.g. slots or frames
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L5/00—Arrangements affording multiple use of the transmission path
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L5/00—Arrangements affording multiple use of the transmission path
    • H04L5/003—Arrangements for allocating sub-channels of the transmission path
    • H04L5/0053—Allocation of signalling, i.e. of overhead other than pilot signals
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W4/00—Services specially adapted for wireless communication networks; Facilities therefor
    • H04W4/70—Services for machine-to-machine communication [M2M] or machine type communication [MTC]
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W56/00—Synchronisation arrangements
    • 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
    • H04W72/00—Local resource management
    • H04W72/04—Wireless resource allocation
    • H04W72/044—Wireless resource allocation based on the type of the allocated resource
    • H04W72/0453—Resources in frequency domain, e.g. a carrier in FDMA

Definitions

  • the present application relates to the field of communications, and more specifically, to a method and device for determining transmission resources.
  • V2X technology includes, for example, vehicle-to-vehicle (V2V) communication technology, vehicle-to-pedestrian (V2P) communication technology, vehicle-to-infrastructure (V2I) communication Technology, of course, may also include other communication technologies.
  • V2V vehicle-to-vehicle
  • V2P vehicle-to-pedestrian
  • V2I vehicle-to-infrastructure
  • LTE long-term evolution
  • Rel Release
  • 3GPP has released standards based on research on the 5th generation (5G), and the first version of 5G Rel-15 supports dual connectivity (E-UTRAN New Radio) for long-term evolution of new wireless access technologies.
  • eNB LTE base station evolved node B
  • NR new radio
  • gNB new radio base station
  • eNB or gNB can be used as a synchronization source for terminal equipment.
  • GNSS global navigation satellite system
  • GNSS global navigation satellite system
  • the terminal can determine the frame number and subframe number of the terminal device according to the time obtained from the synchronization source. As the terminal device requires higher and higher accuracy of time, how can the terminal device improve when synchronizing to the above synchronization source The timing accuracy of the terminal equipment needs to be solved urgently.
  • the present application provides a method and device for determining transmission resources, which can improve the timing accuracy of terminal equipment.
  • a method for determining transmission resources includes: a first terminal device obtains a first time from a synchronization source; the first terminal device according to the first time and the side link The subcarrier interval determines the time slot number of the side link, and the side link is used for the side terminal information transmitted by the first terminal device and the second terminal terminal device; The time slot number determines the transmission resource used to transmit the side information on the side link.
  • the first terminal device can determine the time slot number of the resource occupied by the side link according to the first subcarrier interval of the resource occupied by the side link and the first time sent by the first synchronization source, and determine the time slot number according to the time slot number
  • the transmission resource of the side link may be used for the first terminal device to transmit the side information. In this way, the embodiment of the present application improves the timing accuracy of the terminal device, thereby improving the communication quality of the side link.
  • the synchronization source is a satellite, and the first time is the time of the current unified coordination time UTC; or the synchronization source is a network device, and the first time is the current network time.
  • the present application can be applied to the scenario where the synchronization source is a satellite, or to the scenario where the synchronization source is a network device, that is, the application scope of the embodiments of the present application is expanded.
  • the method before the terminal device determines the time slot number of the side link, the method further includes: the terminal device acquiring a time offset value; wherein, the terminal device Determining the first time and the subcarrier interval of the side link, and determining the time slot number of the side link includes: the terminal device according to the first time, the time offset value, and the side link The subcarrier spacing of the channel determines the time slot number of the side link.
  • the terminal device can also consider the time offset to determine the time slot number of the side link, so that the time slot number determined by the terminal device is more accurate, and the communication quality of the side link is further improved.
  • the time offset value is a time offset value between the side link and the second link
  • the second link is the first terminal device and the network The link through which the device communicates
  • a time offset value between the first network device and the second network device is a network device that supports long-term evolution LTE protocol, and the second network device is a network device that supports the new wireless NR protocol, or
  • Time offset value between the third network device and the fourth network device, the third network device and the fourth network device are network devices that support the new wireless NR protocol, and the third network device and the fourth network The devices are not synchronized or have different subcarrier spacing.
  • the time offset value may be the time offset value in the above-mentioned various scenarios, which expands the application scenarios of the embodiments of the present application.
  • the time offset value is indicated by the service network device of the terminal device, or is pre-configured, or predetermined.
  • the time offset value can be obtained through the various methods described above, which improves the application flexibility of the present application.
  • the terminal device acquiring the time offset value includes: the terminal device receiving indication information from a network device, the indication information is used to indicate the time offset value, and the time offset value It is determined by the network device according to multiple time offset values reported by multiple terminal devices.
  • the terminal device receives the target time offset value selected by the network device from multiple time offset values, that is, multiple terminal devices can adopt a uniform time offset value, so that the time slot number obtained by the terminal device is more uniform, thereby further improving The communication quality of the side link is improved.
  • the method further includes:
  • the terminal device sends the time offset value to the network device.
  • the determining, by the terminal device according to the first time and the subcarrier interval of the side link, the time slot number of the side link includes: the terminal device according to the first The time, the reference time of the synchronization source, and the subcarrier interval of the side link determine the time slot number of the side link.
  • the terminal device determines the time slot number of the side link according to the first time, the subcarrier interval of the side link and the reference time of the synchronization source, thereby making the time slot number determined by the terminal device more accurate and further improving the communication quality .
  • the determining, by the terminal device according to the first time and the subcarrier interval of the side link, the time slot number of the side link includes: The first time, the reference time of the synchronization source, the subcarrier interval and the time offset value of the side link determine the time slot number of the side link.
  • the terminal device determines the time slot number of the side link according to the first time, the subcarrier interval of the side link, the reference time of the synchronization source, and the time offset value, so that the time slot number determined by the terminal device is more accurate and Further improve the communication quality.
  • the method further includes:
  • the terminal device determines the subframe number and / or frame number of the side link according to the first time.
  • the first terminal device can determine the subframe number and / or frame number of the resource occupied by the side link according to the first time, and determine the transmission resource of the side link according to the subframe number and / or frame number, that is, In the case where the timing between the first terminal device and the synchronization source and the timing difference between the side link are large, the subframe number for signal transmission by the side link can also be determined more specifically, and / Or frame number, thereby improving the communication quality of the side link.
  • the terminal device determining the frame number of the side link according to the first time of the synchronization source includes:
  • the first time and the frame number of the side link satisfy:
  • DFN is the frame number of the side link
  • f2 (t) is a function representing the first time t
  • floor () is rounding down
  • mode is the remainder
  • M is the radio frame included in a frame Number
  • t ⁇ 0 M is a positive integer
  • the first time and the subframe number of the side link satisfy:
  • subframe is the subframe number
  • f3 (t) is a function representing the first time t
  • floor () is rounding down
  • mode is the remainder
  • N is the number of subframes included in a radio frame, and t ⁇ 0, N is a positive integer.
  • the method further includes:
  • the terminal device determines the subframe number and / or frame number of the side link according to the first time of the synchronization source and the subcarrier interval of the side link.
  • the time slot number of the link f1 (t) represents a function of the first time t
  • the value of ⁇ corresponds to the subcarrier spacing of the side link
  • g ( ⁇ ) and h ( ⁇ ) are functions of ⁇
  • floor () means rounding down
  • mode means taking the remainder
  • ⁇ is a positive integer, t ⁇ 0.
  • the value of ⁇ corresponds to the subcarrier spacing of the side link, g ( ⁇ ) and h ( ⁇ ) are functions of ⁇ , floor () means round down, mode means remainder, and ⁇ is a positive integer , T ⁇ 0, Tref> 0.
  • the terminal device determines the side link according to the first time, the reference time of the synchronization source, the subcarrier interval of the side link, and the time offset value
  • the terminal device determines the time slot number of the side link according to the first time and the subcarrier interval of the side link in the following manner: f4 (t) ⁇ g ( ⁇ ) ⁇ r ( ⁇ _u)), where f4 (t) is a function representing the first time t, the value of ⁇ corresponds to the subcarrier spacing of the side link, and the value of ⁇ _u corresponds to The subcarrier spacing of the link between the terminal device and the network device to which it belongs, g ( ⁇ ) is a function of ⁇ , r ( ⁇ _u) is a function of ( ⁇ _u), floor () indicates rounding down, and ⁇ And ⁇ _u are positive integers, t ⁇ 0 ,.
  • g ( ⁇ ) 2 ⁇ ;
  • g ( ⁇ ) 2 ⁇ -m , where m corresponds to the subcarrier interval of the synchronization source of the first terminal device, or corresponds to the subcarrier interval of the network device, or corresponds to the reference subcarrier interval, or corresponds to the first The maximum subcarrier spacing of the link between the terminal device and the network device, and m is a positive integer.
  • a communication method includes:
  • the first terminal device determines the first time slot number of the time slot that receives the indication information from the network device, where the indication information is used to indicate a time interval, where the first time slot number is the first sub of the first link A time slot number in a time slot corresponding to a carrier interval, the first link is a link between the first terminal device and the network device;
  • the first terminal device determines the second slot number in the slot corresponding to the second subcarrier interval according to the first slot number and the time interval, and the second subcarrier interval is a side link Subcarrier spacing, the side link is used for the side terminal information transmitted by the first terminal device and the second terminal device;
  • the first terminal device sends the side information to the second terminal device and / or receives the side information from the second terminal device on a time slot corresponding to the second time slot number.
  • the first terminal device when the sub-carrier interval of the first link communicating with the network device is different from the sub-carrier interval of the side link, the first terminal device can The first time slot number and the time interval of the information determine the second time slot number, and then communicate with other terminal devices in the time slot corresponding to the second time slot number, which improves the cross-carrier scheduling with different subcarrier intervals Accuracy, or reduce the inconsistency between transceivers, thereby improving communication quality.
  • the determining, by the first terminal device according to the first slot number and the time interval, the second slot number in the slot corresponding to the second subcarrier interval includes:
  • the first terminal device determines the second slot number according to the time interval, the first slot number, the first subcarrier interval, and the second subcarrier interval.
  • the first terminal device may specifically determine the second slot number according to the time interval, the first slot number, the first subcarrier interval, and the second subcarrier interval, which further improves the accuracy of cross-carrier scheduling with different subcarrier intervals Sex.
  • the terminal device can determine the second slot number according to the time interval and the first slot number, which improves the accuracy of cross-carrier scheduling.
  • the determining, by the first terminal device according to the first slot number and the time interval, the second slot number in the slot corresponding to the second subcarrier interval includes:
  • the time offset value Is the time offset between the first link and the side link.
  • the first terminal device may also consider the time offset value of the first link and the side link, and further improve the accuracy of cross-carrier scheduling where the first link and the side link deviate.
  • the first terminal device determines the second time according to the time interval, the first slot number, the first subcarrier interval, and the second subcarrier interval Slot numbers include:
  • the time interval, the first slot number, the first subcarrier interval and the second subcarrier interval satisfy the following relationship:
  • slot is the second time slot number
  • n is the first time slot number
  • the value of ⁇ s corresponds to the second subcarrier interval
  • the value of ⁇ u corresponds to the first subcarrier Interval
  • K2 is the time interval
  • n, ⁇ s and ⁇ u are all positive integers, and K2> 0.
  • the first terminal device determines according to the time interval, the first slot number, the first subcarrier interval, the second subcarrier interval, and a time offset value
  • the second time slot number includes:
  • the time information, the first time slot number, the first subcarrier interval, the second subcarrier interval and the time offset value satisfy the following relationship:
  • slot is the second time slot number
  • n is the first time slot number
  • the value of ⁇ s corresponds to the second subcarrier interval
  • the value of ⁇ u corresponds to the first subcarrier Interval
  • K2 is the time interval
  • offset is the time offset value
  • n, ⁇ s and ⁇ u are all positive integers, K2> 0, offset ⁇ 0.
  • the first terminal device determines the second slot number in the slot corresponding to the second subcarrier interval according to the first slot number and the time interval, including:
  • the first terminal device determines a target time slot according to the first time slot number, where the target time slot is a time slot corresponding to the second subcarrier interval and the first terminal device parses the indication information Time slot
  • the first terminal device determines the second time slot number according to the target time slot and the time interval.
  • the first terminal device determines, according to the first time slot number, the target time slot for completing the parsing of the indication information, and the time slot number of the time slot where the time interval passes after the start time of the target time slot is used as the second Time slot number, which improves the accuracy of cross-carrier scheduling with different subcarrier intervals, thereby improving the communication quality of the side link.
  • the time slot where the first time slot number is located overlaps at least two time slots in the resources occupied by the side link, and the determining according to the first time slot number Target time slots include:
  • the target time slot is determined from the at least two time slots according to a preset condition and the first time slot number.
  • the first terminal device may select from the at least two time slots according to the preset condition and the first time slot number One of the two time slots is selected as the target time slot, so that the first terminal device can communicate with the peer device of the side link using a unified target time slot, thereby improving the communication quality.
  • the indication information is also used to indicate The first time slot of the at least two time slots is determined as the target time slot.
  • the indication information may also carry a target time slot indicating the at least two time slots Information, so that the first terminal device can determine the target time slot according to the instruction information, so that the first terminal device can communicate with the peer device of the side link using a unified target time slot, thereby improving communication quality.
  • the preset condition is the first time slot in the at least two time slots or the next time slot in the first time slot in the at least two time slots.
  • the preset condition may be that one of the at least two time slots is fixed as the target time slot.
  • the first time slot of the at least two time slots may be used as the target time slot, or the last one of the at least two time slots may be used as the target time slot, or the first of the at least two time slots
  • the next time slot in a time slot is used as the target time slot.
  • the method further includes:
  • the preset condition is determined according to the size of the overlapping area of the time slot where the first time slot number is located and each time slot in the at least two time slots.
  • the specific content of the preset condition may also be flexibly adjusted.
  • the first terminal device may determine the preset condition according to a size relationship between the first subcarrier interval and the second subcarrier interval. Or the first terminal device may determine the preset condition according to the size of the overlapping area between the time slot where the first time slot number is located and each time slot in the at least two time slots.
  • an apparatus for determining transmission resources may be a terminal or a chip in the terminal.
  • the device has functions to realize the above-mentioned first aspect and various possible implementation manners. This function can be realized by hardware, and can also be realized by hardware executing corresponding software.
  • the hardware or software includes one or more modules corresponding to the above functions.
  • the device includes: a processing module and a transceiver module.
  • the transceiver module may be, for example, at least one of a transceiver, a receiver, and a transmitter.
  • the transceiver module may include a radio frequency circuit or an antenna.
  • the processing module may be a processor.
  • the device further includes a storage module, which may be, for example, a memory.
  • a storage module is included, the storage module is used to store instructions.
  • the processing module is connected to the storage module, and the processing module may execute instructions stored in the storage module or instructions derived from other instructions, so that the device executes the method of the first aspect or any one of the above.
  • the chip when the device is a chip, the chip includes: a processing module, optionally, the chip further includes a transceiver module, and the transceiver module may be, for example, an input / output interface or a pin on the chip Or circuit etc.
  • the processing module may be a processor, for example. The processing module can execute instructions so that the chip in the terminal executes the above-mentioned first aspect and any possible implemented communication method.
  • the processing module may execute instructions in the storage module, and the storage module may be a storage module in the chip, such as a register, a cache, and so on.
  • the storage module may also be located in the communication device but outside the chip, such as read-only memory (read-only memory, ROM) or other types of static storage devices that can store static information and instructions, random access memory (random access) memory, RAM), etc.
  • the processor mentioned in any of the above can be a general-purpose central processing unit (CPU), a microprocessor, an application-specific integrated circuit (ASIC), or one or more for controlling the above An integrated circuit that executes programs of various communication methods.
  • CPU central processing unit
  • ASIC application-specific integrated circuit
  • a communication device may be a terminal or a chip in the terminal.
  • the device has the function of realizing the above-mentioned second aspect and various possible implementation manners. This function can be realized by hardware, and can also be realized by hardware executing corresponding software.
  • the hardware or software includes one or more modules corresponding to the above functions.
  • the device includes a transceiver module and a processing module.
  • the transceiver module may be at least one of a transceiver, a receiver, and a transmitter.
  • the transceiver module may include a radio frequency circuit or an antenna.
  • the processing module may be a processor.
  • the device further includes a storage module, which may be, for example, a memory.
  • a storage module is included, the storage module is used to store instructions.
  • the processing module is connected to the storage module, and the processing module can execute instructions stored in the storage module or instructions derived from other instructions, so that the device executes the communication method of the second aspect and various possible implementation manners.
  • the device may be a network device.
  • the chip when the device is a chip, the chip includes: a transceiver module and a processing module.
  • the transceiver module may be, for example, an input / output interface, a pin, or a circuit on the chip.
  • the processing module may be a processor, for example. The processing module may execute instructions so that the chip in the terminal executes the above-mentioned second aspect and any possible implemented communication method.
  • the processing module may execute instructions in the storage module, and the storage module may be a storage module in the chip, such as a register, a cache, and so on.
  • the storage module may also be located in the communication device but outside the chip, such as read-only memory or other types of static storage devices that can store static information and instructions, random access memory, and so on.
  • the processor mentioned in any one of the above may be a general-purpose central processing unit, a microprocessor, an application-specific integrated circuit, or one or more integrated circuits for controlling the execution of programs of the communication methods in the above aspects.
  • a computer storage medium in which a program code is stored, and the program code is used to instruct instructions to execute the method in the first aspect or any possible implementation manner thereof.
  • a computer storage medium in which a program code is stored, and the program code is used to instruct an instruction to execute the method in the second aspect or any possible implementation manner thereof.
  • a computer program product containing instructions, which when run on a computer, causes the computer to execute the method in any possible implementation manner of the first aspect described above.
  • a computer program product containing instructions which when executed on a computer, causes the computer to execute the method in the second aspect or any possible implementation manner thereof.
  • a processor is provided for coupling with a memory for performing the method in the foregoing first aspect or any possible implementation manner thereof.
  • a processor is provided for coupling with a memory for performing the method in the second aspect or any possible implementation manner thereof.
  • a chip includes a processor and a communication interface.
  • the communication interface is used to communicate with an external device or an internal device.
  • the processor is used to implement the first aspect or any possible implementation manner thereof. Methods.
  • the chip may further include a memory, in which instructions are stored, and the processor is used to execute instructions stored in the memory or derived from other instructions.
  • the processor is used to implement the method in the first aspect or any possible implementation manner thereof.
  • the chip may be integrated on the terminal.
  • a chip is provided.
  • the chip includes a processor and a communication interface.
  • the communication interface is used to communicate with an external device or an internal device.
  • the processor is used to implement the second aspect or any possible implementation manner thereof. Methods.
  • the chip may further include a memory, in which instructions are stored, and the processor is used to execute instructions stored in the memory or derived from other instructions.
  • the processor is used to implement the method in the second aspect or any possible implementation manner thereof.
  • the chip may be integrated on the terminal.
  • the terminal device can determine the time slot number of the resource occupied by the side link according to the first subcarrier interval occupied by the side link and the first time sent by the first synchronization source, and according to the time slot The number determines the transmission resource of the side link.
  • the transmission resource may be used for the terminal device to transmit side information. In this way, the embodiment of the present application improves the timing accuracy of the terminal device, thereby improving the communication quality.
  • FIG. 1 is a schematic diagram of an application scenario of an embodiment of this application
  • 2 is a schematic diagram of the correspondence between different subcarrier intervals and different time slot lengths
  • FIG. 3 is a schematic flowchart of a method for determining transmission resources according to an embodiment of the present application
  • FIG. 5 is a schematic diagram of an application scenario of another embodiment of this application.
  • FIG. 6 is a schematic flowchart of a communication method according to an embodiment of the present application.
  • FIG. 7 is a schematic diagram of a communication method of a specific embodiment of the present application.
  • FIG. 8 is a schematic diagram of a communication method according to another specific embodiment of the present application.
  • FIG. 9 is a schematic block diagram of an apparatus for determining transmission resources according to an embodiment of the present application.
  • FIG. 10 is a schematic structural diagram of an apparatus for determining transmission resources according to an embodiment of the present application.
  • FIG. 11 is a schematic block diagram of a terminal according to an embodiment of the present application.
  • FIG. 12 is a schematic block diagram of an apparatus for determining transmission resources according to another embodiment of the present application.
  • FIG. 13 is a schematic block diagram of an apparatus for determining transmission resources according to still another embodiment of the present application.
  • Terminal devices including devices that provide voice and / or data connectivity to users, for example, may include handheld devices with wireless connection capabilities, or processing devices connected to wireless modems.
  • the terminal device can communicate with the core network via a radio access network (RAN) and exchange voice and / or data with the RAN.
  • the terminal equipment may include user equipment (user equipment, UE), wireless terminal equipment, mobile terminal equipment, subscriber unit (subscriber unit), subscriber station (subscriber station), mobile station (mobile station), mobile station (mobile), remote Remote station, access point (AP), remote terminal equipment (remote terminal), access terminal equipment (access terminal), user terminal equipment (user terminal), user agent (user agent), or user Equipment (user device), etc.
  • a mobile phone or called a “cellular” phone
  • a computer with a mobile terminal device, a portable, pocket-sized, handheld, mobile device built into the computer, a smart wearable device, and the like.
  • PCS personal communication service
  • SIP session initiation protocol
  • WLL wireless local loop
  • PDA personal digital assistants
  • restricted devices such as devices with low power consumption, or devices with limited storage capacity, or devices with limited computing power. Examples include bar code, radio frequency identification (RFID), sensors, global positioning system (GPS), laser scanners and other information sensing equipment.
  • RFID radio frequency identification
  • GPS global positioning system
  • laser scanners and other information sensing equipment.
  • the terminal device may also be a wearable device or the like.
  • Wearable devices can also be referred to as wearable smart devices. It is a general term for applying wearable technology to intelligently design everyday wear and develop wearable devices, such as glasses, gloves, watches, clothing and shoes.
  • a wearable device is a portable device that is worn directly on the body or integrated into the user's clothes or accessories. Wearable devices are not only a hardware device, but also realize powerful functions through software support, data interaction, and cloud interaction.
  • Generalized wearable smart devices include full-featured, large-sized, complete or partial functions that do not depend on smartphones, such as: smart watches or smart glasses, and only focus on a certain type of application functions, and need to cooperate with other devices such as smartphones Use, such as all kinds of smart bracelets, smart helmets, smart jewelry for sign monitoring.
  • the various terminal devices described above are located on the vehicle (for example, placed in the vehicle or installed in the vehicle), they can be regarded as in-vehicle terminal devices. ).
  • Network equipment for example, including access network (AN) equipment, such as base stations (for example, access points), may refer to equipment that communicates with wireless terminal equipment through one or more cells at the air interface in the access network
  • AN access network
  • a network device in V2X technology is a road side unit (RSU).
  • the base station can be used to convert received air frames and Internet Protocol (IP) packets to each other as a router between the terminal equipment and the rest of the access network, where the rest of the access network can include the IP network.
  • the RSU can be a fixed infrastructure entity that supports V2X applications and can exchange messages with other entities that support V2X applications.
  • the network equipment can also coordinate the management of the attributes of the air interface.
  • the network equipment may include an evolved base station (NodeB or eNB or e-NodeB, evolutional Node B) in a long term evolution (LTE) system or an evolved LTE system (LTE-Advanced, LTE-A), or It can also include the next generation node B (gNB) in the 5G NR system or it can also include the centralized unit (CU) and distribution in the cloud access network (cloud radio access network, CloudRAN) system.
  • the distributed unit distributed unit, DU is not limited in the embodiments of the present application.
  • “Multiple” refers to two or more. In view of this, in the embodiments of the present application, “multiple” may also be understood as “at least two". "At least one” can be understood as one or more, such as one, two or more. For example, including at least one means including one, two, or more, and does not limit which ones are included. For example, if at least one of A, B and C is included, then A, B, C, A and B, A and C, B and C, or A and B and C may be included. In the same way, the understanding of the description of "at least one" is similar.
  • the embodiments of the present application refer to ordinal numbers such as “first” and "second” to distinguish between multiple objects, and are not used to limit the order, timing, priority, or importance of multiple objects.
  • first time domain resource and the second time domain resource are only used to distinguish different time domain resources, and do not limit the priority or importance of the two time domain resources.
  • the technical solution provided by the embodiments of the present application may be applied to a 5G system, or to a future communication system or other similar communication systems.
  • the technical solution provided by the embodiments of the present application may be applied to a cellular link or a link between devices, for example, a device-to-device (D2D) link.
  • the D2D link or V2X link may also be referred to as a sidelink (sidelink), where the sidelink may also be referred to as a side link or secondary link.
  • sidelink sidelink
  • the above terms all refer to links established between devices of the same type, and have the same meaning.
  • the so-called devices of the same type may be a link between terminal devices and terminal devices, or a link between base stations and base stations, or a link between relay nodes and relay nodes.
  • This application The embodiment does not limit this.
  • the link between the terminal device and the terminal device there is a D2D link defined by 3GPP version (Rel) -12/13, and there are also car-to-car, car-to-mobile phone, or car-to-entity defined by 3GPP for car networking V2X links, including Rel-14 / 15. It also includes Rel-16 and subsequent versions of the NR system-based V2X link currently under study by 3GPP.
  • GSM global mobile communication
  • CDMA code division multiple access
  • WCDMA broadband code division multiple access
  • general packet radio service general packet radio service, GPRS
  • LTE long term evolution
  • LTE frequency division duplex FDD
  • TDD time division duplex
  • UMTS universal mobile communication system
  • WiMAX worldwide interoperability for microwave access
  • the terminal device or network device includes a hardware layer, an operating system layer running on the hardware layer, and an application layer running on the operating system layer.
  • the hardware layer includes central processing unit (CPU), memory management unit (memory management unit, MMU), and memory (also called main memory) and other hardware.
  • the operating system may be any one or more computer operating systems that implement business processes through processes, for example, a Linux operating system, a Unix operating system, an Android operating system, an iOS operating system, or a windows operating system.
  • the application layer includes browser, address book, word processing software, instant messaging software and other applications.
  • the embodiment of the present application does not specifically limit the specific structure of the execution body of the method provided in the embodiment of the present application, as long as it can run the program that records the code of the method provided by the embodiment of the present application to provide according to the embodiment of the present application
  • the method may be used for communication.
  • the execution body of the method provided in the embodiments of the present application may be a terminal device or a network device, or a functional module in the terminal device or a network device that can call a program and execute the program.
  • the term "article of manufacture” as used in this application encompasses a computer program accessible from any computer-readable device, carrier, or medium.
  • the computer-readable medium may include, but is not limited to: magnetic storage devices (for example, hard disks, floppy disks, or magnetic tapes, etc.), optical disks (for example, compact discs (CDs), digital universal discs (digital discs, DVDs)) Etc.), smart cards and flash memory devices (for example, erasable programmable read-only memory (EPROM), cards, sticks or key drives, etc.).
  • various storage media described herein may represent one or more devices and / or other machine-readable media for storing information.
  • machine-readable medium may include, but is not limited to, wireless channels and various other media capable of storing, containing, and / or carrying instructions and / or data.
  • various storage media described herein may represent one or more devices and / or other machine-readable media for storing information.
  • machine-readable medium may include, but is not limited to, wireless channels and various other media capable of storing, containing, and / or carrying instructions and / or data.
  • multiple application programs can be run at the application layer.
  • the application program that executes the communication method of the embodiment of the present application and the device for controlling the receiving end device to complete the received data The application of the corresponding action may be a different application.
  • FIG. 1 is a schematic diagram of an application scenario of an embodiment of the present application.
  • the application scenario may be a connected car scenario, which includes one or more global navigation satellite systems (GNSS), one or more LTE base station equipment (eNB), one or Multiple NR base station equipment (gNB), one or more roadside units (RSU), and one or more on-board equipment (eg, UE1, UE2, and UE3).
  • GNSS global navigation satellite systems
  • eNB LTE base station equipment
  • gNB Multiple NR base station equipment
  • RSU roadside units
  • UE1 on-board equipment
  • GNSS can be used to provide positioning information for each network element
  • eNB can communicate with each vehicle-mounted device and / or RSU
  • gNB can also communicate with each vehicle-mounted device and / or RSU
  • RSU can communicate with each station device and / or The eNB communicates
  • the vehicle-mounted device can communicate with at least one of GNSS, eNB, gNB, RSU, and other vehicle-mounted devices.
  • the present application can be applied to scenarios that include eNB and gNB, and can also be applied to scenarios that do not include eNB and / or gNB. Specifically, when there is eNB and / or gNB, it is a network coverage scenario; when there is no eNB and gNB, it is a scenario without network coverage.
  • the RSU can be regarded as a vehicle-mounted device or an eNB device in terms of function, which is not limited in this application.
  • the link between the UE and the UE may be referred to as "D2D link” in D2D, may also be referred to as “sidelink or sidelink”, and may also be referred to as PC5
  • the link, or in the Internet of Vehicles may be called a vehicle-to-vehicle (V2V) link, or a vehicle-to-pedestrian (V2P) link, or a vehicle-to-infrastructure (V2I) link.
  • V2V vehicle-to-vehicle
  • V2P vehicle-to-pedestrian
  • V2I vehicle-to-infrastructure
  • the “side link” is used as an example for description, but the present application is not limited to this.
  • the link between the network device eg, gNB, eNB, or RSU
  • the UE may be referred to as a cellular link.
  • the communication between the various devices in the scenario shown in FIG. 1 may use the spectrum of the cellular link or the intelligent transportation spectrum around 5.9 GHz, which is not limited in this application.
  • two terminals that perform D2D communication may be synchronized to the same type of synchronization source, or may be synchronized to different types of synchronization sources.
  • UE3 is synchronized to gNB
  • UE2 is synchronized to eNB
  • D2D communication is performed between UE2 and UE3
  • UE1 is synchronized to eNB
  • UE2 is synchronized to eNB
  • D2D communication is performed between UE1 and UE2
  • UE3 is synchronized to gNB
  • UE2 Synchronized to eNB D2D communication between UE2 and UE3.
  • the subcarrier spacing is a fixed value, and various types of subcarrier spacing are supported in the 5G standard, for example, the subcarrier spacing is 15 kHz, 30 kHz, 60 kHz, 120 kHz, 240 kHz, and 480 kHz. Therefore, when two terminals performing D2D communication are synchronized to two different types of gNBs, the subcarrier spacing of the two gNBs may be different.
  • the subcarrier spacing in a subband is inversely proportional to the length of the OFDM symbol corresponding to the subband, that is, the larger the subcarrier spacing, The shorter the length of the OFDM symbol.
  • the subcarrier intervals are 15 kHz and 60 kHz, respectively, and the corresponding relationship between the subcarrier intervals of 15 kHz and 60 kHz and the OFDM symbol length is shown.
  • FIG. 2 shows that in FIG.
  • the OFDM system uses Fast Fourier Transform (FFT) to transform an OFDM symbol in the time domain into a corresponding subcarrier in the frequency domain, and the subcarrier in the frequency domain undergoes inverse transform of the FFT That is, the inverse fast Fourier transform (Inverse Fast Fourier Transformation, IFFT) changes into an OFDM symbol in the time domain.
  • FFT Fast Fourier Transform
  • IFFT inverse fast Fourier Transformation
  • the subcarrier spacing is inversely proportional to the length of the OFDM symbol, that is, the time length of one OFDM symbol when the subcarrier spacing type is 15 kHz is the corresponding time of one OFDM symbol when the subcarrier spacing type is 60 kHz 4 times the length of time.
  • transmission time interval transmission time interval
  • one TTI may be 1 ms per subframe, or 1 slot.
  • the slot may be a relative unit, that is, only the number of OFDM symbols contained in the slot is defined. For example, as shown in Figure 2, a slot contains 7 OFDM symbols.
  • the subcarrier spacing type is 15 kHz
  • the absolute time length of a slot is 0.5 ms
  • the subcarrier spacing type is 60 kHz
  • the absolute value of a slot is The length of time is 0.125 ms.
  • the terminal can determine the frame number and subframe number of the terminal device according to the time obtained from the synchronization source. As the terminal device requires higher and higher accuracy of time, how can the terminal device improve when synchronizing to the above synchronization source The timing accuracy of the terminal equipment needs to be solved urgently.
  • FIG. 3 shows a schematic flowchart of a method for determining transmission resources according to an embodiment of the present application.
  • the first terminal device obtains the first time from the synchronization source. Accordingly, the synchronization source sends the first time.
  • the synchronization source may be any one of eNB, gNB, or GNSS.
  • the subcarrier spacing of the resources occupied by the communication between the first terminal device and the eNB is usually fixed at 15 kHz
  • the subcarrier spacing of the resources occupied by the communication between the first terminal device and the gNB is usually 15 * 2 ⁇ kHz, where the value of ⁇ is 0, 1, 2, 3, or 4, that is, the corresponding subcarrier spacing is 15kHz, 30kHz, 60kHz, 120kHz, and 240kHz, respectively.
  • the following embodiment may be described as corresponding to the subcarrier interval, for example, the value of ⁇ corresponding to the subcarrier interval of 15 kHz is 0, and the value of ⁇ corresponding to the subcarrier interval of 30 kHz is 1.
  • the value of ⁇ at 60 kHz is 2, the value of ⁇ at 120 kHz is 3, and the value of ⁇ at 240 kHz is 4.
  • time slot refers to the time length occupied by one transmission at a specific subcarrier interval. It can be 1ms, 0.5ms, 0.25ms, 0.125ms, or 0.0625ms, or other length values.
  • the symbols occupied by it can be 14, 12, 7, 6, 4, 3, or 2, or other symbols.
  • the length of one time slot is 0.5 ms
  • the length of one subframe is 1 ms.
  • the length of a time slot under different subcarrier intervals is different, which can be simply considered as an integer multiple of 1ms divided by 2.
  • the NR system also supports the transmission of mini-slots, that is, the transmission of time slots using only partial symbols.
  • the UE obtains the first time from the network device.
  • the accuracy of the acquired first time is related to the implementation of the UE and the bandwidth of the signal sent by the network device.
  • the UE can obtain the wireless frame number, subframe number or time slot number of the signal sent by the network device. If you want to obtain more accurate first-time information, you can also get the start and end positions of the symbol, the start and end positions of the cyclic prefix (CP), or the position of the time accuracy at the sampling point level.
  • the UE Before the UE demodulates the baseband signal, the UE must sample the received signal.
  • the sampling rate Fs is usually an integer multiple of the subcarrier spacing and Fast Fourier Transform (FFT) points .
  • FFT Fast Fourier Transform
  • the sampling rate is an integer multiple of 30.72M.
  • the UE obtains the first time from the satellite device.
  • the time accuracy of the first time acquired with GNSS is obtained based on the information provided by the satellite, and is usually related to the satellite system and the receiver of the satellite signal. For example, timing accuracy of tens of nanoseconds can be achieved. This time accuracy is sufficient for wireless communication systems on the order of milliseconds or microseconds.
  • the first time is UTC time.
  • the first time is the current network time.
  • the time of the network may be the time corresponding to the radio frame, subframe, time slot or mini-slot, and symbol.
  • the first time is the time of the network within the coverage of the network device.
  • the network device may be an eNB or gNB.
  • the first terminal device determines the time slot number of the side link according to the first time and the subcarrier interval of the side link, and the side link is used for the first terminal device and the second terminal device Transmit side information.
  • the side link is a link used for communication between terminal devices
  • the sub-carrier interval of the side link may be the sub-carrier interval of resources occupied by the side link
  • the first terminal device may be based on the first time
  • the subcarrier spacing from the side link determines the slot number of the side link.
  • the opposite end of a terminal communicating via a side link may be a terminal or multiple terminals; or multiple terminals may communicate with a terminal via a side link, that is, the terminal in step 302
  • h ( ⁇ ) and g ( ⁇ ) may be the same or different.
  • step 302 may more specifically be to determine the time slot number of the side link according to the first time, the reference time of the synchronization source, and the subcarrier interval of the side link.
  • the first terminal device needs to consider the current time of the synchronization source and the reference time of the synchronization source, and determine the time slot number of the side link in combination with the subcarrier interval of the side link.
  • the reference time of the synchronization source may be 00:00:00 on January 1, 1900 UTC Greenwich Mean Time.
  • the reference time of the synchronization source may be the time of the frame header of the first wireless frame of the wireless frame where the current time of the network is located.
  • the reference time of the synchronization source can be configured or pre-configured by the network to the first terminal device, and when not configured, its value is zero.
  • the first time, the reference time of the synchronization source, the subcarrier interval of the side link and the slot number of the side link may satisfy the following formula:
  • slot floor ((f1 (t) -Tref) ⁇ g ( ⁇ )) mode h ( ⁇ ), where slot is the slot number of the side link, and f1 (t) is the first time t Function, Tref is the reference time of the synchronization source, the value of ⁇ corresponds to the subcarrier interval of the side link, g ( ⁇ ) and h ( ⁇ ) are functions of ⁇ , and floor () means to take down Integer, mode means taking the remainder, and ⁇ is a positive integer, t ⁇ 0, Tref> 0.
  • f1 (t) represents a function of the first time t
  • f1 (t) t
  • g ( ⁇ ) may represent the absolute duration of a time slot
  • slot floor ((t-Tref) ⁇ 2 ⁇ ) mode 2 ⁇ .
  • the first terminal device may also obtain a time offset value, and determine the time slot of the side link according to the first time of the synchronization source, the time offset value, and the subcarrier interval of the side link number.
  • the first time obtained by the first terminal device from the network device is the relative time difference between the current time of the network and the current wireless frame, so that the first terminal device
  • the relative time difference, as well as the time offset value and the subcarrier spacing of the side link, can determine the time slot number of the side link.
  • the first time, the subcarrier interval of the side link, the time offset value, and the time slot number of the side link satisfy the following formula:
  • slot floor ((f1 (t) -offsetDFN) ⁇ g ( ⁇ )) mode h ( ⁇ ), where slot is the slot number of the side link, and f1 (t) is the first time t Function, offsetDFN is the time offset value, the value of ⁇ corresponds to the subcarrier spacing of the side link, g ( ⁇ ) and h ( ⁇ ) are functions of ⁇ , and floor () means round down , Mode means taking the remainder, and ⁇ is a positive integer, t ⁇ 0, offsetDFN> 0.
  • f1 (t) t
  • g ( ⁇ ) 2 ⁇
  • h ( ⁇ ) 2 ⁇
  • slot floor ((t-offsetDFN) ⁇ 2 ⁇ ) mode 2 ⁇ .
  • the first time, the subcarrier interval of the side link, the time offset value, and the time slot number of the side link satisfy the following formula:
  • slot ((f1 (t) -offsetDFN) ⁇ g ( ⁇ )) mode h ( ⁇ ), where slot is the slot number of the side link, and f1 (t) is a function representing the first time t , OffsetDFN is the time offset value, the value of ⁇ corresponds to the subcarrier spacing of the side link, g ( ⁇ ) and h ( ⁇ ) are functions of ⁇ , mode represents the remainder, and ⁇ is positive Integer, t ⁇ 0, offsetDFN> 0.
  • the time offset value acquired by the first terminal device may be received from the network device.
  • multiple terminal devices may report multiple time offset values, and the network device determines the final target time offset value according to the multiple time offset values, and configures the target time offset value to the first terminal device.
  • step 302 may more specifically determine the time slot number of the side link according to the first time, the reference time of the synchronization source, the subcarrier interval and the time offset value of the side link.
  • time offset value may be configured by the first network device to which the first terminal device belongs, or may be pre-agreed between the first terminal device and the first network device to which it belongs, or may be specified in a protocol , This application does not limit this.
  • the first time, the reference time of the synchronization source, the subcarrier interval of the side link, the time offset value, and the time slot number of the side link satisfy the following formula:
  • slot floor ((f1 (t) -Tref-offsetDFN) ⁇ g ( ⁇ )) mode h ( ⁇ ), where slot is the slot number of the side link, and f1 (t) is the first time A function of t, Tref is the reference time of the synchronization source, offsetDFN is the time offset value, the value of ⁇ corresponds to the subcarrier spacing of the side link, g ( ⁇ ) and h ( ⁇ ) are The function of ⁇ , floor () means round down, mode means take the remainder, and ⁇ is a positive integer, t ⁇ 0, Tref> 0, offsetDFN> 0.
  • the first time, the reference time of the synchronization source, the subcarrier interval of the side link, the time offset value, and the time slot number of the side link satisfy the following formula:
  • slot ((f1 (t) -Tref-offsetDFN) ⁇ g ( ⁇ )) mode h ( ⁇ ), where slot is the slot number of the side link, and f1 (t) is the first time t , Tref is the reference time of the synchronization source, offsetDFN is the time offset value, the value of ⁇ corresponds to the subcarrier spacing of the side link, g ( ⁇ ) and h ( ⁇ ) are ⁇ Function, mode means taking the remainder, and ⁇ is a positive integer, t ⁇ 0, Tref> 0, offsetDFN> 0.
  • the time offset value may be the time offset value of the side link and the second link, and the second link is a link for communication between the first terminal device and the network device ,or
  • a time offset value between the first network device and the second network device is a network device that supports long-term evolution LTE protocol, and the second network device is a network device that supports the new wireless NR protocol, or
  • Time offset value between the third network device and the fourth network device, the third network device and the fourth network device are network devices that support the new wireless NR protocol, and the third network device and the fourth network The devices are not synchronized or have different subcarrier spacing.
  • the offset value is the time offset value between the side link and the second link: the timing used when communicating on the side link and the uplink or downlink timing used on the second link Time offset between.
  • This time offset value can be defined on the radio frame number, subframe number, time slot number or symbol interval or the length of the sampling point, which is not limited in the present invention.
  • the offset value is the time offset value between the first side transmission technology and the second side transmission technology refers to: the first side transmission technology, such as LTE-V2X, the second side transmission Technology, the timing offset value that exists between these two side transmission technologies.
  • This time offset value can be defined on the radio frame number, subframe number, time slot number or symbol interval or the length of the sampling point in the sidelink example, which is not limited in the present invention.
  • a time offset value between the first network device and the second network device is a network device that supports long-term evolution LTE protocol
  • the second network device is a device that supports the new wireless NR protocol
  • the network device refers to: a time offset value between timings used in uplink or downlink when LTE eNB communicates with NR gNB.
  • This time offset value can be defined on the radio frame number, subframe number, time slot number or symbol interval, or sampling point duration, which is not limited in the present invention.
  • a time offset value between the third network device and the fourth network device, the third network device and the fourth network device are network devices supporting the new wireless NR protocol
  • the third network device Unsynchronized with the fourth network device or have different subcarrier intervals refers to: the time offset between the timings used in uplink or downlink when two gNRs with different subcarrier intervals and / or timing misalignment communicate with each other Shift value.
  • This time offset value can be defined on the radio frame number, subframe number, time slot number or symbol interval or the length of the sampling point, which is not limited in the present invention.
  • the first time, the subcarrier interval of the side link and the slot number of the side link may also satisfy the following formula:
  • slot is the time slot number of the side link
  • f4 (t) is a function representing the first time t
  • the value of ⁇ corresponds to the subcarrier interval of the side link
  • ⁇ _u is taken The value corresponds to the subcarrier spacing of the link between the first terminal device and the network device to which it belongs
  • g ( ⁇ ) is a function of ⁇
  • r ( ⁇ _u) is a function of ( ⁇ _u)
  • floor () means down Rounded
  • ⁇ and ⁇ _u are positive integers, t ⁇ 0.
  • the first time, the subcarrier interval of the side link and the slot number of the side link may also satisfy the following formula:
  • slot is the time slot number of the side link
  • f4 (t) is a function representing the first time t
  • the value of ⁇ corresponds to the subcarrier interval of the side link
  • ⁇ _u is taken The value corresponds to the subcarrier spacing of the link between the first terminal device and the network device to which it belongs
  • g ( ⁇ ) is a function of ⁇
  • r ( ⁇ _u) is a function of ( ⁇ _u)
  • ⁇ and ⁇ _u are both Positive integer, t ⁇ 0.
  • the first time, the subcarrier interval of the side link, the time offset value, and the slot number of the side link may also satisfy the following formula:
  • slot is the time slot number of the side link
  • f4 (t) is a function representing the first time t
  • the value of ⁇ corresponds to the subcarrier interval of the side link
  • ⁇ _u is taken
  • offset1 is the time offset value
  • g ( ⁇ ) is a function of ⁇
  • r ( ⁇ _u) is a function of ( ⁇ _u)
  • Floor () means round down
  • ⁇ and ⁇ _u are positive integers, t ⁇ 0.
  • slot floor ((t + offset1) ⁇ 2 ⁇ - ⁇ _u )
  • g ( ⁇ ) 2 ⁇ ;
  • g ( ⁇ ) 2 ⁇ -m , where m corresponds to the subcarrier interval of the synchronization source of the first terminal device, or corresponds to the subcarrier interval of the network device, or corresponds to the reference subcarrier interval, or corresponds to the first The maximum subcarrier spacing of the link between the terminal device and the network device, and m is a positive integer.
  • the first terminal device determines, according to the time slot number, a transmission resource used to transmit the side information on the side link.
  • the first terminal device can determine the time slot number of the resource occupied by the side link according to the first subcarrier interval of the resource occupied by the side link and the first time sent by the first synchronization source, and according to the time slot The number determines the transmission resource of the side link.
  • the transmission resource may be used for the first terminal device to send and receive information. In this way, the embodiment of the present application improves the timing accuracy of the terminal device, thereby improving the communication quality.
  • the first terminal device may receive and / or send side information on the transmission resource.
  • the first terminal device may be any terminal device in D2D communication, that is to say, each of the two terminal devices in D2D communication may determine to communicate with the opposite end in the above manner Time slot number.
  • the embodiments of the present application may be applied to a scenario where the first terminal device and the second terminal are synchronized to different types of synchronization sources (for example, one synchronization source is eNB and the other synchronization source is gNB), for example, As shown in FIG. 4, the synchronization of the first terminal device to the eNB is different from the synchronization to the gNB. Or the embodiment of the present application may also be applied to the synchronization between the first terminal device and the second terminal device to a synchronization source with a different subcarrier interval from the resources occupied by the side link, so that the first terminal device and the second terminal device Inter-communication has uniform timing, thereby improving the communication quality of D2D communication.
  • synchronization sources for example, one synchronization source is eNB and the other synchronization source is gNB
  • the embodiment of the present application may also be applied to the synchronization between the first terminal device and the second terminal device to a synchronization source with a different subcarrier interval from the resources occupied by
  • the first terminal device may also determine the subframe number and / or frame number of the side link according to the first time acquired from the synchronization source.
  • the first terminal device can determine the subframe number and / or frame number of the resource occupied by the side link according to the first time, and determine the transmission of the side link according to the subframe number and / or frame number Resources, that is, in the case where the timing offset between the first terminal device and the synchronization source and the timing between the side links are large, the subframe on which the side link performs signal transmission can also be determined more specifically Number, and / or frame number, thereby improving the communication quality of the side link.
  • the first time and the frame number of the side link satisfy:
  • the first time and the subframe number of the side link satisfy:
  • DFN is the frame number of the side link
  • subframe is the sub frame number of the side link
  • f2 (t) and f3 (t) are functions of the first time t
  • floor () indicates the direction Rounded down
  • mode represents the remainder
  • M is the number of radio frames included in a frame
  • N is the number of subframes included in a radio frame
  • t ⁇ 0, M and N are positive integers.
  • the number M of wireless frames included in one frame may be 1024, and the number N of subframes included in one wireless frame may be 10.
  • the first time and the frame number of the side link satisfy:
  • the first time and the subframe number of the side link satisfy:
  • DFN is the frame number of the side link
  • subframe is the sub frame number of the side link
  • f2 (t) and f3 (t) are functions of the first time t
  • mode represents the remainder
  • M is the number of radio frames included in one frame
  • N is the number of subframes included in one radio frame
  • t ⁇ 0, M and N are both positive integers.
  • the first terminal device determines the subframe number and / or frame number of the side link according to the first time of the synchronization source, the reference time of the synchronization source, and the subcarrier interval of the side link.
  • the first time, the reference time of the synchronization source, and the frame number of the side link may satisfy:
  • the first time, the reference time of the synchronization source and the subframe number of the side link can meet:
  • subframe floor (f3 (t) -Tref) mode N;
  • DFN is the frame number of the side link
  • subframe is the sub frame number of the side link
  • Tref represents the reference time of the synchronization source
  • f2 (t) is a function representing the first time t
  • M is the number of radio frames included in a frame
  • N is the number of subframes included in a radio frame
  • t ⁇ 0, Tref> 0, M and N are both Positive integer.
  • the first time, the reference time of the synchronization source, and the frame number of the side link may meet:
  • DFN is the frame number of the side link
  • Tref represents the reference time of the synchronization source
  • f2 (t) is a function representing the first time t
  • floor () represents rounding down
  • mode represents the remainder
  • M is the number of radio frames included in one frame
  • N is the number of subframes included in one radio frame
  • t ⁇ 0, Tref> 0, M are all positive integers.
  • the first time, the reference time of the synchronization source, and the frame number of the side link may meet:
  • the first time, the reference time of the synchronization source and the subframe number of the side link can meet:
  • DFN is the frame number of the side link
  • subframe is the sub frame number of the side link
  • Tref represents the reference time of the synchronization source
  • f2 (t) is a function representing the first time t
  • mode It means taking the remainder
  • M is the number of radio frames included in one frame
  • N is the number of subframes included in one radio frame
  • t ⁇ 0, Tref> 0, M and N are both positive integers.
  • the first terminal device may also obtain a time offset value, and determine the frame number of the side link according to the first time of the synchronization source, the time offset value, and the subcarrier interval of the side link And / or subframe number.
  • the first time obtained by the first terminal device from the network device is the relative time difference between the current time of the network and the current wireless frame, so that the first terminal device
  • the relative time difference, as well as the time offset value and the subcarrier interval of the side link can determine the frame number and / or subframe number of the side link.
  • the first time, the subcarrier interval of the side link, the time offset value, and the frame number of the side link satisfy the following formula:
  • DFN floor (0.1 (f1 (t) -offsetDFN)) mode M;
  • the first time, the subcarrier interval of the side link, the time offset value, and the subframe number of the side link satisfy the following formula:
  • subframe floor (f1 (t) -offsetDFN) mode N;
  • DFN is the frame number of the side link
  • subframe is the sub frame number of the side link
  • f1 (t) is a function representing the first time t
  • offsetDFN is the time offset value
  • ⁇ The value of corresponds to the subcarrier spacing of the side link
  • g ( ⁇ ) and h ( ⁇ ) are functions of ⁇
  • floor () means rounding down
  • mode means taking the remainder
  • t ⁇ 0, Tref > 0, offsetDFN> 0, M and N are positive integers.
  • f1 (t) t
  • g ( ⁇ ) 2 ⁇
  • h ( ⁇ ) 2 ⁇
  • DFN floor (0.1 (t-offsetDFN)) mode 1024
  • subframe floor (f1 (t) -offsetDFN) mode10.
  • the first time, the subcarrier interval of the side link, the time offset value, and the frame number of the side link satisfy the following formula:
  • the first time, the subcarrier interval of the side link, the time offset value, and the subframe number of the side link satisfy the following formula:
  • subframe (f1 (t) -offsetDFN) mode N;
  • DFN is the frame number of the side link
  • subframe is the sub frame number of the side link
  • f1 (t) is a function representing the first time t
  • offsetDFN is the time offset value
  • ⁇ The value of corresponds to the subcarrier spacing of the side link
  • g ( ⁇ ) and h ( ⁇ ) are functions of ⁇
  • mode represents the remainder
  • M and N are both positive Integer.
  • the first terminal device determines the subframe number and / or frame number of the side link according to the first time of the synchronization source, the reference time of the synchronization source, and the time offset value.
  • the first time, the reference time of the synchronization source, the time offset value, and the frame number of the side link may meet:
  • DFN floor (f2 (t) -Tref-offsetDFN) mode M;
  • the first time, the reference time of the synchronization source, the time offset value and the subframe number of the side link can meet:
  • subframe floor (f3 (t) -Tref-offsetDFN) mode N;
  • DFN is the frame number of the side link
  • subframe is the sub frame number of the side link
  • Tref represents the reference time of the synchronization source
  • offsetDFN represents the time offset value
  • f2 (t) represents the A function of time t
  • floor () means rounding down
  • mode means taking the remainder
  • M is the number of radio frames included in a frame
  • N is the number of subframes included in a radio frame
  • t ⁇ 0, Tref> 0, offsetDFN> 0, M and N are positive integers.
  • the first time, the reference time of the synchronization source, the time offset value, and the frame number of the side link may meet:
  • DFN floor (0.1 (f2 (t) -Tref-offsetDFN)) mode M;
  • DFN is the frame number of the side link
  • Tref represents the reference time of the synchronization source
  • offsetDFN represents the time offset value
  • f2 (t) is a function representing the first time t
  • floor () represents the downward Integer
  • mode means taking the remainder
  • M is the number of radio frames included in a frame
  • N is the number of subframes included in a radio frame
  • t ⁇ 0, Tref> 0, offsetDFN> 0, M is a positive integer.
  • the first time, the reference time of the synchronization source, the time offset value, and the frame number of the side link may meet:
  • the first time, the reference time of the synchronization source, the time offset value and the subframe number of the side link can meet:
  • subframe (f3 (t) -Tref-offsetDFN) mode N;
  • DFN is the frame number of the side link
  • subframe is the sub frame number of the side link
  • Tref represents the reference time of the synchronization source
  • offsetDFN represents the time offset value
  • f2 (t) represents the A function of time t
  • floor () means rounding down
  • mode means taking the remainder
  • M is the number of radio frames included in a frame
  • N is the number of subframes included in a radio frame
  • t ⁇ 0, Tref> 0, offsetDFN> 0, M and N are positive integers.
  • the first terminal device determines the subframe number and / or frame number of the side link according to the first time of the synchronization source and the subcarrier interval of the side link.
  • the first time, the subcarrier interval of the side link and the frame number of the side link may satisfy the following formula:
  • the first time, the subcarrier interval of the side link and the subframe number of the side link can satisfy the following formula:
  • subframe floor (f3 (t) ⁇ g ( ⁇ )) mode N;
  • DFN is the frame number of the side link
  • subframe is the sub frame number of the side link
  • f2 (t) and f3 (t) are functions of the first time t, respectively
  • ⁇ corresponds to
  • g ( ⁇ ) is a function of ⁇
  • floor () means rounding down
  • mode means taking the remainder
  • M is the number of wireless frames included in a frame
  • N is a wireless The number of subframes included in the frame
  • ⁇ is a positive integer
  • t ⁇ 0, and M and N are both positive integers.
  • the first time, the subcarrier interval of the side link and the frame number of the side link may satisfy the following formula:
  • the first time, the subcarrier interval of the side link and the subframe number of the side link can satisfy the following formula:
  • DFN is the frame number of the side link
  • subframe is the sub frame number of the side link
  • f2 (t) and f3 (t) are functions of the first time t, respectively
  • the value of ⁇ corresponds to
  • g ( ⁇ ) is a function of ⁇
  • mode represents the remainder
  • M is the number of radio frames included in one frame
  • N is the number of subframes included in one radio frame
  • ⁇ is a positive integer
  • t ⁇ 0, M and N are positive integers.
  • the first terminal device determines the subframe number and / or frame number of the side link according to the first time of the synchronization source, the reference time of the synchronization source, and the subcarrier interval of the side link .
  • the first time, the subcarrier interval of the side link and the frame number of the side link may satisfy the following formula:
  • DFN floor ((f2 (t) -Tref) ⁇ g ( ⁇ )) mode M;
  • the first time, the subcarrier interval of the side link and the subframe number of the side link can satisfy the following formula:
  • subframe floor ((f3 (t) -Tref) ⁇ g ( ⁇ )) mode N;
  • DFN is the frame number of the side link
  • subframe is the sub frame number of the side link
  • Tref is the reference time of the synchronization source
  • f2 (t) and f3 (t) are the first time t
  • ⁇ corresponds to the subcarrier spacing of the side link
  • g ( ⁇ ) is a function of ⁇
  • floor () means rounding down
  • mode means the remainder
  • M is the radio included in a frame
  • N is the number of subframes included in one radio frame
  • ⁇ is a positive integer
  • M and N are both positive integers.
  • the first terminal device determines the subframe number and / or frame number of the side link according to the first time of the synchronization source, the reference time of the synchronization source, and the subcarrier interval of the side link .
  • the first time, the subcarrier interval of the side link and the frame number of the side link may satisfy the following formula:
  • the first time, the subcarrier interval of the side link and the subframe number of the side link can satisfy the following formula:
  • subframe ((f3 (t) -Tref) ⁇ g ( ⁇ )) mode N;
  • DFN is the frame number of the side link
  • subframe is the sub frame number of the side link
  • Tref is the reference time of the synchronization source
  • f2 (t) and f3 (t) are the first time t
  • ⁇ corresponds to the subcarrier spacing of the side link
  • g ( ⁇ ) is a function of ⁇
  • mode represents the remainder
  • M is the number of radio frames included in a frame
  • N is a radio frame
  • ⁇ is a positive integer
  • t ⁇ 0, Tref> 0 and M and N are both positive integers.
  • the first terminal device determines the subframe number of the side link according to the first time of the synchronization source, the reference time of the synchronization source, the time offset value, and the subcarrier interval of the side link And / or frame number.
  • the first time, the subcarrier interval of the side link and the frame number of the side link may satisfy the following formula:
  • DFN floor ((f2 (t) -Tref-DFNoffset) ⁇ g ( ⁇ )) mode M;
  • the first time, the subcarrier interval of the side link and the subframe number of the side link can satisfy the following formula:
  • subframe floor ((f3 (t) -Tref-DFNoffset) ⁇ g ( ⁇ )) mode N;
  • DFN is the frame number of the side link
  • subframe is the sub frame number of the side link
  • Tref is the reference time of the synchronization source
  • DFNoffset is the time offset f2 (t) and f3 (t)
  • ⁇ corresponds to the subcarrier spacing of the side link
  • g ( ⁇ ) is a function of ⁇
  • floor () means rounding down
  • mode means taking the remainder
  • M Is the number of radio frames included in one frame
  • N is the number of subframes included in one radio frame
  • ⁇ is a positive integer
  • M and N are both positive integers.
  • the first time, the subcarrier interval of the side link and the frame number of the side link may satisfy the following formula:
  • DFN ((f2 (t) -Tref-DFNoffset) ⁇ g ( ⁇ )) mode M;
  • the first time, the subcarrier interval of the side link and the subframe number of the side link can satisfy the following formula:
  • subframe ((f3 (t) -Tref-DFNoffset) ⁇ g ( ⁇ )) mode N;
  • DFN is the frame number of the side link
  • subframe is the sub frame number of the side link
  • Tref is the reference time of the synchronization source
  • DFNoffset is the time offset f2 (t) and f3 (t)
  • ⁇ corresponds to the subcarrier interval of the side link
  • g ( ⁇ ) is a function of ⁇
  • mode represents the remainder
  • M is the number of radio frames included in a frame
  • N is the number of subframes included in one radio frame
  • ⁇ is a positive integer
  • M and N are both positive integers.
  • DFN f5 (t) + offset2
  • DFN the frame number of the side link
  • f5 (t) is a function representing the first time t
  • offset2 is a time offset value
  • time units of f5 (t) and offset2 are wireless frames, and the values are integers.
  • subframe f6 (t) + offset3
  • DFN the frame number of the side link
  • f6 (t) is a function representing the first time t
  • offset2 is a time offset value
  • time units of f6 (t) and offset3 are subframes, and the values are integers.
  • offset2 and offset3 may be configured by the network device, or may be determined by the first terminal device itself, or may be preset. The value of at least one of offset2 and offset3 may be 0.
  • the first terminal device can determine the resource occupied by the side link according to the first subcarrier interval of the resource occupied by the side link and the first time sent by the first synchronization source And the transmission resource of the side link is determined according to the time slot number.
  • the transmission resource may be used for the first terminal device to transmit side information, so that the embodiment of the present application improves the timing accuracy of the terminal device. Furthermore, the communication quality is improved.
  • the base station sends scheduling information to the terminal device through the cellular link. If the subcarrier interval occupied by the cellular link is different from the subcarrier interval occupied by the side link, the terminal device cannot indicate according to the scheduling information Know the time slot position for data transmission on the side link, so that the communication quality of the side link is low.
  • FIG. 6 shows a schematic flowchart of a communication method according to an embodiment of the present application.
  • the first terminal device determines the first time slot number of the time slot that receives the indication information from the network device, where the indication information is used to indicate the time interval, where the first time slot number is the first link number of the first link A time slot number in a time slot corresponding to a subcarrier interval, the first link is a link between the first terminal device and the network device.
  • the first link may be a link between the first terminal device and the network device to which it belongs, so that the first terminal can receive the indication information sent by the network device through the first link.
  • the absolute time length of a slot corresponding to different subcarrier intervals is different
  • the first slot number may be determined by the first subcarrier interval of the first link, or the first slot number is the first link The slot number corresponding to the first subcarrier interval.
  • time interval may be in units of time slots, OFDM symbols, or time slots and OFDM symbols, which is not limited in this application.
  • the first terminal device determines, according to the first time slot number and the time interval, a second time slot number in a time slot corresponding to a second subcarrier interval, where the second subcarrier interval is a side row
  • the subcarrier interval of the link, and the side link is used for the side terminal information transmitted by the first terminal device and the second terminal device.
  • the first terminal device may determine the second slot number corresponding to the second subcarrier interval according to the first slot number and the time interval, where the second subcarrier interval is a subcarrier interval of the side link
  • the side link may be a link between the first terminal device and other terminal devices.
  • timing of the side link and the timing of the first link may be aligned, or there may be a time deviation, for example, as shown in FIG. 7, a slot corresponding to a 15 kHz subcarrier interval There is a time offset between the starting position of number n and the starting position of slot number m corresponding to the subcarrier interval of 30 kHz.
  • step 602 may specifically determine the second time slot number according to the time interval, the first time slot number, the first subcarrier interval, and the second subcarrier interval.
  • the first terminal device may learn the first sub-carrier interval of the first link and the second sub-carrier interval of the side link, and may further according to the first sub-carrier interval, the second sub-carrier interval, and the second A time slot number and a time interval determine the second time slot number.
  • the time interval, the first slot number, the first subcarrier interval, the second subcarrier interval, and the second slot number may satisfy the following formula:
  • slot is the second slot number
  • n is the first slot number
  • the value of ⁇ s corresponds to the second subcarrier interval
  • the value of ⁇ u corresponds to the first subcarrier interval
  • K2 is the time Interval
  • n, ⁇ s and ⁇ u are all positive integers, K2> 0.
  • step 602 may further specifically determine the second slot number according to the time interval, the first slot number, the first subcarrier interval, the time offset value, and the second subcarrier interval.
  • the first terminal device may learn the first subcarrier interval of the first link, the second subcarrier interval of the side link, and the time offset value, and then may be based on the first subcarrier interval, the second The subcarrier interval, first slot number, time offset value and time interval determine the second slot number.
  • the first subcarrier interval, the second subcarrier interval, the first slot number, the time offset value, and the time interval, and the second slot number may satisfy the following formula:
  • slot is the second time slot number
  • n is the first time slot number
  • the value of ⁇ s corresponds to the second subcarrier interval
  • the value of ⁇ u corresponds to the first subcarrier Interval
  • K2 is the time interval
  • offset is the time offset value
  • n, ⁇ s and ⁇ u are all positive integers, K2> 0, offset ⁇ 0.
  • step 602 may specifically determine the target time slot according to the first time slot number, and then determine the second time slot number according to the target time slot and the time interval.
  • the first terminal device may select one of the one or more time slots as the target time slot (For example, the start length indication value (SLIV) is used as an example for description), starting from the target time slot, the time slot number of the time slot where the time domain position after the time interval indicated by the indication information passes will be calculated The second time slot number is determined.
  • SIV start length indication value
  • the sub-carrier spacing of the first link is 15 kHz
  • the sub-carrier spacing of the side link is 30 kHz.
  • the first terminal sends downlink information in the n-th time slot.
  • the mth time slot, the m + 1 time slot and the m + 2 time slot overlap, and the first terminal device needs to determine which of the mth time slot, the m + 1 time slot, and the m + 2 time slot
  • the starting position of the time slot is taken as the target time slot, and according to the time slot number and time interval k2 of the target time slot, the second time slot number can be determined as m + 2.
  • uplink information is sent on the m + 3 time slot from the start position of the m-th time slot (eg, physical sidelink shared channel (pysical sidelink) share (channel, PSSCH)); If the m + 1 time slot is used as the target time slot, the upstream information is sent on the m + 4 time slot from the start position of the m + 1 time slot.
  • start position of the m-th time slot eg, physical sidelink shared channel (pysical sidelink) share (channel, PSSCH)
  • the network device sends downlink information in the n + 1 time slot.
  • the uplink information is sent in the m + 1 time slot; if the first terminal device uses the m + 1 time slot as the target time slot, the uplink information is sent in the m + 2 time slot.
  • the downlink information sent by the network device may be downlink control information (down control information, DCI) or radio resource control (radio resource control, RRC) signaling.
  • DCI down control information
  • RRC radio resource control
  • target time slot here refers to a time slot in which the indication information is valid or serves as an indication on the side link.
  • This target time slot may also be referred to as an "effective time slot”.
  • the first terminal device determines the target time slot of the indication information on the side link according to the first time slot number, which may specifically be the first terminal device according to the first time slot number and a preset condition To determine the target time slot.
  • the first terminal device may be based on the preset condition and the first time slot number, One of the at least two time slots is selected as the target time slot, so that the first terminal device can communicate with the peer device of the side link using a unified target time slot, thereby improving the communication quality.
  • the preset condition may be that one of the at least two time slots is fixed as the target time slot.
  • the first time slot of the at least two time slots may be used as the target time slot, or the last one of the at least two time slots may be used as the target time slot, or the first of the at least two time slots The next time slot in a time slot is used as the target time slot.
  • the specific content of the preset condition may also be flexibly adjusted.
  • the first terminal device may determine the preset condition according to a size relationship between the first subcarrier interval and the second subcarrier interval. For example, when the first subcarrier interval is greater than or equal to the second subcarrier interval, the preset condition is to use the first time slot as a target time slot; or the first subcarrier is less than the second subcarrier interval In the case of, the preset condition is to use the next slot after the first slot as the target slot; or, the other size relationship between the first subcarrier interval and the second subcarrier interval is the same as the above Any possible content has a corresponding relationship, and this application does not limit it.
  • the specific content of the preset condition may also be flexibly adjusted.
  • the first terminal device may be based on the time slot where the first time slot number is located and the time slot of each of the at least two time slots.
  • the size of the overlapping area determines the preset condition.
  • the first terminal device uses the time slot where the first time slot is located and the time slot with the largest overlapping area among the at least two time slots as the target time slot, or the time slot with the smallest overlapping area as the target time slot, or It is also possible to sort the size of the overlapping area, and set a certain time slot in the sort as the target time slot.
  • the preset condition may also be determined by the position of the overlapping area of the time slot where the first time slot number is located and the at least two time slots. For example, a time slot in which the front part of the entire time slot overlaps among the two time slots is used as the target time slot, or a time slot in which the rear part region of the entire time slot overlaps is used as the target time slot.
  • the indication information is also used to indicate that the at least two time slots The first time slot in is determined as the target time slot of the indication information.
  • the indication information may also carry an indication of the at least two time slots
  • the information of the target time slot so that the first terminal device can determine the target time slot according to the instruction information, so that the first terminal device can communicate with the peer device of the side link by using a unified target time slot, thereby Improve the communication quality.
  • the first terminal device sends the sideline information to the second terminal device and / or receives the sideline information from the second terminal device on a time slot corresponding to the second time slot number . Accordingly, the second terminal device receives and / or transmits the signal.
  • the second terminal device may be a specific terminal device used for unicast communication, or the second terminal device may be multiple terminal devices used for multicast or multicast communication, or the first terminal device
  • the second terminal device is a terminal used for multiple or uncertain receiving objects for broadcast communication.
  • the opposite end of the first terminal device communicating through the side link may be one or more terminal devices, the second terminal device is one of the multiple terminal devices, or a part of the multiple terminal devices , Or all of the multiple terminal devices.
  • the first terminal device when the sub-carrier interval of the first link communicating with the network device is different from the sub-carrier interval of the side link, the first terminal device can The first time slot number of the indication information of the time interval and the time interval determine the second time slot number, and then communicate with other terminal devices on the time slot corresponding to the second time slot number, which improves the difference between subcarrier intervals.
  • the accuracy of cross-carrier scheduling reduces the inconsistency between transceivers, thereby improving the communication quality.
  • FIG. 9 shows a schematic block diagram of an apparatus 900 for determining transmission resources according to an embodiment of the present application.
  • the apparatus 900 may correspond to the terminal device in the embodiment shown in FIG. 3, and may have any function of the terminal device in the method.
  • the device 900 includes a transceiver module 910 and a processing module 920.
  • the transceiver module 910 is used to obtain the first time from the synchronization source
  • the processing module 920 is configured to determine the time slot number of the side link according to the first time and the subcarrier interval of the side link, the side link is used for the first terminal device and the second terminal terminal The device transmits side information;
  • the processing module 920 is also used to determine the transmission resource used to transmit the side information on the side link according to the time slot number.
  • the synchronization source is a satellite, and the first time is the time of the current unified coordination time UTC; or
  • the synchronization source is a network device, and the first time is the current network time.
  • processing module 920 is specifically used to:
  • the time slot number of the side link is determined according to the first time, the reference time of the synchronization source, and the subcarrier interval of the side link.
  • processing module 920 is specifically used to:
  • the time slot number of the side link is determined according to the first time, the reference time of the synchronization source, the subcarrier interval and the time offset value of the side link.
  • the processing module 920 is further configured to determine the subframe number and / or frame number of the side link according to the first time of the synchronization source and the subcarrier interval of the side link.
  • the first time, the subcarrier interval of the side link and the slot number of the side link satisfy:
  • slot floor (f1 (t) ⁇ g ( ⁇ )) mode h ( ⁇ ), where slot is the slot number of the side link, f1 (t) represents the function of the first time t, the value of ⁇ Corresponding to the subcarrier spacing of the side link, and ⁇ is a positive integer, t ⁇ 0, g ( ⁇ ) and h ( ⁇ ) are functions of ⁇ , floor () means rounding down, and mode means taking the remainder.
  • the first time, the reference time of the synchronization source, the subcarrier interval of the side link and the slot number of the side link satisfy:
  • slot floor ((f1 (t) -Tref) ⁇ g ( ⁇ )) mode h ( ⁇ ), where slot is the slot number of the side link, and f1 (t) is a function representing the first time t , Tref is the reference time of the synchronization source, the value of ⁇ corresponds to the subcarrier interval of the side link, g ( ⁇ ) and h ( ⁇ ) are functions of ⁇ , and ⁇ is a positive integer, t ⁇ 0, Tref> 0, floor () means round down, mode means take the remainder.
  • the first time, the reference time of the synchronization source, the time offset value, the subcarrier interval of the side link and the slot number of the side link satisfy:
  • slot floor ((f1 (t) -Tref-offsetDFN) ⁇ g ( ⁇ )) mode h ( ⁇ ), where slot is the slot number of the side link, and f1 (t) is the first time t Function, Tref is the reference time of the synchronization source, offsetDFN is the time offset value, the value of ⁇ corresponds to the subcarrier interval of the side link, and ⁇ is a positive integer, t ⁇ 0, Tref> 0, offsetDFN> 0, g ( ⁇ ) and h ( ⁇ ) are functions of ⁇ , floor () means rounding down, and mode means taking the remainder.
  • the first time of the synchronization source, the subcarrier interval of the side link and the subframe number of the side link satisfy:
  • DFN is the frame number of the side link
  • f2 (t) is a function representing the first time t
  • the value of ⁇ corresponds to the subcarrier interval of the side link
  • g ( ⁇ ) is a function of ⁇
  • Floor () means rounding down
  • mode means taking the remainder
  • M is the number of wireless frames included in a frame
  • ⁇ is a positive integer
  • t ⁇ 0 M is a positive integer
  • the first time of the synchronization source, the subcarrier interval of the side link and the subframe number of the side link satisfy:
  • subframe is the subframe number of the side link
  • f3 (t) is a function representing the first time t
  • the value of ⁇ corresponds to the subcarrier interval of the side link
  • g ( ⁇ ) is ⁇ Function
  • floor () means rounding down
  • mode means taking the remainder
  • N is the number of subframes included in a radio frame
  • ⁇ is a positive integer
  • t ⁇ 0 and N is a positive integer.
  • the processing module is specifically used to determine the time slot number of the side link according to f4 (t) ⁇ g ( ⁇ ) ⁇ r ( ⁇ _u)), where f4 (t) is the first time As a function of t, the value of ⁇ corresponds to the subcarrier spacing of the side link, the value of ⁇ _u corresponds to the subcarrier spacing of the link between the terminal device and the network device to which it belongs, and both ⁇ and ⁇ _u Positive integer, t ⁇ 0, g ( ⁇ ) is a function of ⁇ , r ( ⁇ _u) is a function of ( ⁇ _u), and floor () means rounding down.
  • g ( ⁇ ) 2 ⁇ ;
  • g ( ⁇ ) 2 ⁇ -m , where m corresponds to the subcarrier interval of the synchronization source of the terminal device, or the subcarrier interval corresponding to the network device, or the reference subcarrier interval, or the terminal device and the network device
  • the maximum subcarrier spacing of the link between, and m is a positive integer.
  • the device 1000 may be the terminal device described in FIG. 1, the first terminal device described in FIG. 3, and the first terminal device described in FIG. 6. .
  • the device may use the hardware architecture shown in FIG.
  • the device may include a processor 1010 and a transceiver 1020.
  • the device may further include a memory 1030.
  • the processor 1010, the transceiver 1020, and the memory 1030 communicate with each other through an internal connection path.
  • the related functions implemented by the processing module 920 in FIG. 9 may be implemented by the processor 1010, and the related functions implemented by the transceiver module 910 may be implemented by the processor 1010 controlling the transceiver 1020.
  • the processor 1010 may be a general-purpose central processing unit (CPU), a microprocessor, an application-specific integrated circuit (ASIC), a dedicated processor, or one or more An integrated circuit for implementing the technical solutions of the embodiments of the present application.
  • the processor may refer to one or more devices, circuits, and / or processing cores for processing data (eg, computer program instructions).
  • it may be a baseband processor or a central processor.
  • the baseband processor can be used to process communication protocols and communication data
  • the central processor can be used to control communication devices (such as base stations, terminals, or chips, etc.), execute software programs, and process software program data.
  • the processor 1010 may include one or more processors, for example, including one or more central processing units (CPUs).
  • processors for example, including one or more central processing units (CPUs).
  • CPUs central processing units
  • the CPU may be a single processor
  • the core CPU can also be a multi-core CPU.
  • the transceiver 1020 is used for sending and receiving data and / or signals, and receiving data and / or signals.
  • the transceiver may include a transmitter and a receiver, the transmitter for transmitting data and / or signals, and the receiver for receiving data and / or signals.
  • the memory 1030 includes, but is not limited to, random access memory (random access memory, RAM), read-only memory (read-only memory, ROM), erasable programmable memory (erasable programmable read only memory, EPROM), read-only A compact disc (read-only memory, CD-ROM), the memory 1030 is used to store relevant instructions and data.
  • random access memory random access memory
  • ROM read-only memory
  • EPROM erasable programmable memory
  • CD-ROM compact disc
  • the memory 1030 is used to store program codes and data of the terminal device, and may be a separate device or integrated in the processor 1010.
  • the processor 1010 is used to control the transceiver to transmit information with the network device.
  • the processor 1010 is used to control the transceiver to transmit information with the network device.
  • FIG. 10 only shows a simplified design for the communication device.
  • the device may also contain other necessary elements, including but not limited to any number of transceivers, processors, controllers, memories, etc., and all terminals that can implement this application are within the scope of protection of this application within.
  • the device 1000 may be a chip, for example, it may be a communication chip that can be used in a terminal to implement related functions of the processor 1010 in the terminal.
  • the chip can be a field programmable gate array that implements related functions, a dedicated integrated chip, a system chip, a central processor, a network processor, a digital signal processing circuit, a microcontroller, or a programmable controller or other integrated chip.
  • the chip may optionally include one or more memories for storing program codes, and when the codes are executed, the processor is enabled to implement corresponding functions.
  • the apparatus 1000 may further include an output device and an input device.
  • the output device communicates with the processor 1010 and can display information in a variety of ways.
  • the output device may be a liquid crystal display (LCD), a light emitting diode (LED) display device, a cathode ray tube (CRT) display device, or a projector, etc.
  • the input device communicates with the processor 601 and can receive user input in various ways.
  • the input device may be a mouse, keyboard, touch screen device, or sensor device.
  • FIG. 11 shows a simplified schematic structural diagram of a terminal device. It is easy to understand and easy to illustrate.
  • the terminal uses a mobile phone as an example.
  • the terminal includes a processor, a memory, a radio frequency circuit, an antenna, and input and output devices.
  • the processor is mainly used for processing communication protocols and communication data, as well as controlling the terminal, executing software programs, and processing data of software programs.
  • the memory is mainly used to store software programs and data.
  • the radio frequency circuit is mainly used for the conversion of the baseband signal and the radio frequency signal and the processing of the radio frequency signal.
  • the antenna is mainly used to send and receive radio frequency signals in the form of electromagnetic waves.
  • Input and output devices such as touch screens, display screens, and keyboards, are mainly used to receive user input data and output data to the user. It should be noted that some types of terminals may not have input and output devices.
  • the processor When data needs to be sent, 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 processes the baseband signal after radio frequency processing, and then 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.
  • the processor converts the baseband signal into data and processes the data.
  • FIG. 11 In actual terminal products, there may be one or more processors and one or more memories.
  • the memory may also be referred to as a storage medium, storage device, or the like.
  • the memory may be set independently of the processor, or may be integrated with the processor, which is not limited in the embodiments of the present application.
  • an antenna and a radio frequency circuit with a transceiver function can be regarded as a transceiver unit of a terminal device, and a processor with a processing function can be regarded as a processing unit of the terminal device.
  • the terminal includes a transceiver unit 1110 and a processing unit 1120.
  • the transceiver unit may also be called a transceiver, a transceiver, a transceiver device, or the like.
  • the processing unit may also be called a processor, a processing board, a processing module, a processing device, and the like.
  • the device used to implement the receiving function in the transceiver unit 1110 may be regarded as a receiving unit, and the device used to implement the sending function in the transceiver unit 1110 may be regarded as a sending unit, that is, the transceiver unit 1110 includes a receiving unit and a sending unit.
  • the transceiver unit may sometimes be called a transceiver, a transceiver, or a transceiver circuit.
  • the receiving unit may sometimes be called a receiver, a receiver, or a receiving circuit.
  • the sending unit may sometimes be called a transmitter, a transmitter, or a transmitting circuit.
  • transceiving unit 1110 is used to perform the sending operation and the receiving operation on the terminal side in the above method embodiment
  • processing unit 1120 is used to perform other operations on the terminal other than the transceiving operation in the above method embodiment.
  • the processing unit 1120 is used to perform the operation in step 403 in FIG. 4, and / or the processing unit 1120 is also used to perform other processing steps on the terminal side in the embodiments of the present application.
  • the transceiving unit 1110 is used to perform the transceiving operations in step 401, step 402, and / or step 404 in FIG. 4, and / or the transceiving unit 1110 is also used to perform other transceiving steps on the terminal side in the embodiments of the present application.
  • the chip When the device is a chip, the chip includes a transceiver unit and a processing unit.
  • the transceiver unit may be an input-output circuit and a communication interface;
  • the processing unit is a processor or microprocessor or integrated circuit integrated on the chip.
  • the apparatus when the apparatus is a terminal device, reference may also be made to the device shown in FIG. 12.
  • the device can perform functions similar to the processor 1110 in FIG. In FIG. 12, the device includes a processor 1201, a transmission data processor 1203, and a reception data processor 1205.
  • the processing module 910 in the foregoing embodiment may be the processor 1201 in FIG. 12 and complete the corresponding functions.
  • the transceiver module 910 in the above embodiment may be the sending data processor 1203 and the receiving data processor 1205 in FIG. 12.
  • a channel encoder and a channel decoder are shown in FIG. 12, it can be understood that these modules do not constitute a restrictive description of this embodiment, but are only schematic.
  • FIG. 13 shows another form of this embodiment.
  • the processing device 1300 includes modules such as a modulation subsystem, a central processing subsystem, and peripheral subsystems.
  • the communication device in this embodiment can serve as the modulation subsystem therein.
  • the modulation subsystem may include a processor 1303 and an interface 1304.
  • the processor 1303 performs the function of the processing module 610
  • the interface 1304 performs the function of the transceiver module 910.
  • the modulation subsystem includes a memory 1306, a processor 1303, and a program stored on the memory and executable on the processor. When the processor executes the program, the implementation of one of the first to fifth embodiments method.
  • the memory 1306 may be non-volatile or volatile, and its location may be inside the modulation subsystem or the processing device 1300, as long as the memory 1306 can be connected to the The processor 1303 is sufficient.
  • a computer-readable storage medium on which instructions are stored, and when the instructions are executed, the method in the above method embodiment is executed.
  • a computer program product containing instructions is provided, and when the instructions are executed, the method in the foregoing method embodiment is performed.
  • the computer program product includes one or more computer instructions. When the computer instructions are loaded and executed on the computer, all or part of the processes or functions described in the embodiments of the present application are generated.
  • the computer may be a general-purpose computer, a dedicated computer, a computer network, or other programmable devices.
  • the computer instructions may be stored in a computer-readable storage medium or transferred from one computer-readable storage medium to another computer-readable storage medium, for example, the computer instructions may be from a website site, computer, server or data center Transmission to another website, computer, server or data center via wired (such as coaxial cable, optical fiber, digital subscriber line (DSL)) or wireless (such as infrared, wireless, microwave, etc.).
  • the computer-readable storage medium may be any available medium that can be accessed by a computer or a data storage device including a server, a data center, and the like integrated with one or more available media.
  • the usable medium may be a magnetic medium (for example, a floppy disk, a hard disk, a magnetic tape), an optical medium (for example, a high-density digital video disc (DVD)), or a semiconductor medium (for example, a solid state disk, SSD)) etc.
  • a magnetic medium for example, a floppy disk, a hard disk, a magnetic tape
  • an optical medium for example, a high-density digital video disc (DVD)
  • DVD high-density digital video disc
  • SSD solid state disk
  • the processor may be an integrated circuit chip with signal processing capabilities.
  • each step of the foregoing method embodiment may be completed by an integrated logic circuit of hardware in a processor or instructions in the form of software.
  • the aforementioned processor may be a general-purpose processor, a digital signal processor (DSP), an application specific integrated circuit (ASIC), an existing programmable gate array (FPGA), or other available Programming logic devices, discrete gates or transistor logic devices, discrete hardware components.
  • DSP digital signal processor
  • ASIC application specific integrated circuit
  • FPGA existing programmable gate array
  • Programming logic devices discrete gates or transistor logic devices, discrete hardware components.
  • the methods, steps, and logical block diagrams disclosed in the embodiments of the present application may be implemented or executed.
  • the general-purpose processor may be a microprocessor or the processor may be any conventional processor or the like.
  • the steps of the method disclosed in conjunction with the embodiments of the present application may be directly embodied and executed by a hardware decoding processor, or may be executed and completed by a combination of hardware and software modules in the decoding processor.
  • the software module may be located in a mature storage medium in the art, such as random access memory, flash memory, read-only memory, programmable read-only memory, or electrically erasable programmable memory, and registers.
  • the storage medium is located in the memory, and the processor reads the information in the memory and completes the steps of the above method in combination with its hardware.
  • the memory in the embodiments of the present application may be volatile memory or non-volatile memory, or may include both volatile and non-volatile memory.
  • the non-volatile memory can be read-only memory (read-only memory, ROM), programmable read-only memory (programmable ROM, PROM), erasable programmable read-only memory (erasable PROM, EPROM), electronically Erasable programmable read-only memory (electrically EPROM, EEPROM) or flash memory.
  • the volatile memory may be a random access memory (random access memory, RAM), which is used as an external cache.
  • RAM random access memory
  • SRAM static random access memory
  • DRAM dynamic random access memory
  • synchronous RAM synchronous dynamic random access memory
  • SDRAM double data rate synchronous dynamic random access memory
  • double data rate SDRAM double data rate SDRAM
  • DDR SDRAM enhanced synchronous dynamic random access memory
  • ESDRAM enhanced synchronous dynamic random access memory
  • direct RAMbus RAM direct RAMbus RAM, DR RAM
  • At least one refers to one or more, and “multiple” refers to two or more.
  • “And / or” describes the relationship of the related objects, indicating that there can be three relationships, for example, A and / or B, which can mean: A exists alone, A and B exist at the same time, B exists alone, where A, B can be singular or plural.
  • the character “/” generally indicates that the related object is a "or” relationship.
  • “At least one of the following” or a similar expression refers to any combination of these items, including any combination of a single item or a plurality of items.
  • At least one item (a) in a, b, or c can represent: a, b, c, ab, ac, bc, or abc, where a, b, c can be a single or multiple .
  • a component may be, but is not limited to, a process running on a processor, a processor, an object, an executable file, an execution thread, a program, and / or a computer.
  • the application running on the computing device and the computing device can be components.
  • One or more components can reside in a process and / or thread of execution, and a component can be localized on one computer and / or distributed between 2 or more computers.
  • these components can execute from various computer readable media having various data structures stored thereon.
  • the component may, for example, be based on a signal having one or more data packets (eg, data from two components that interact with another component between the local system, the distributed system, and / or the network, such as the Internet that interacts with other systems through signals) Communicate through local and / or remote processes.
  • data packets eg, data from two components that interact with another component between the local system, the distributed system, and / or the network, such as the Internet that interacts with other systems through signals
  • the disclosed system, device, and method may be implemented in other ways.
  • the device embodiments described above are only schematic.
  • the division of the units is only a division of logical functions.
  • there may be other divisions for example, multiple units or components may be combined or Can be integrated into another system, or some features can be ignored, or not implemented.
  • the displayed or discussed mutual coupling or direct coupling or communication connection may be indirect coupling or communication connection through some interfaces, devices or units, and may be in electrical, mechanical or other forms.
  • the units described as separate components may or may not be physically separated, and the components displayed as units may or may not be physical units, that is, they may be located in one place, or may be distributed on multiple network units. Some or all of the units may be selected according to actual needs to achieve the purpose of the solution of this embodiment.
  • each functional unit in each embodiment of the present application may be integrated into one processing unit, or each unit may exist alone physically, or two or more units may be integrated into one unit.
  • the functions are implemented in the form of software functional units and sold or used as independent products, they can be stored in a computer-readable storage medium.
  • the technical solution of the present application essentially or part of the contribution to the existing technology or part of the technical solution can be embodied in the form of a software product, the computer software product is stored in a storage medium, including Several instructions are used to enable a computer device (which may be a personal computer, server, or network device, etc.) to perform all or part of the steps of the methods described in the embodiments of the present application.
  • the aforementioned storage media include: U disk, mobile hard disk, read-only memory (ROM), random access memory (random access memory, RAM), magnetic disk or optical disk and other media that can store program codes .

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Abstract

L'invention concerne un procédé et un dispositif permettant de déterminer des ressources de transmission. Dans le procédé selon l'invention : un dispositif terminal peut déterminer un nombre de créneaux temporels pour des ressources d'occupation de liaison latérale en fonction d'un premier intervalle de sous-porteuse pour lesdites ressources d'occupation de liaison latérale et d'une première heure envoyée par une première source de synchronisation, et déterminer ensuite des ressources de transmission pour ladite liaison latérale en fonction du nombre de créneaux temporels, les ressources de transmission pouvant être utilisées pour le dispositif terminal afin de transmettre des informations de liaison latérale. Ainsi, les modes de réalisation de la présente invention permettent d'améliorer la précision de synchronisation pour un dispositif terminal, ce qui améliore la qualité de communication.
PCT/CN2019/115029 2018-11-02 2019-11-01 Procédé et dispositif permettant de déterminer des ressources de transmission Ceased WO2020088653A1 (fr)

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CN201811302497.7A CN111148229B (zh) 2018-11-02 2018-11-02 确定传输资源的方法和装置

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