WO2023232007A1 - 信号传输方法及装置 - Google Patents

信号传输方法及装置 Download PDF

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Publication number
WO2023232007A1
WO2023232007A1 PCT/CN2023/097013 CN2023097013W WO2023232007A1 WO 2023232007 A1 WO2023232007 A1 WO 2023232007A1 CN 2023097013 W CN2023097013 W CN 2023097013W WO 2023232007 A1 WO2023232007 A1 WO 2023232007A1
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Prior art keywords
resource
reference signal
candidate
parameters
transmission
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PCT/CN2023/097013
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English (en)
French (fr)
Inventor
雷珍珠
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展讯半导体(南京)有限公司
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Publication of WO2023232007A1 publication Critical patent/WO2023232007A1/zh

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Classifications

    • 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
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W4/00—Services specially adapted for wireless communication networks; Facilities therefor
    • H04W4/30—Services specially adapted for particular environments, situations or purposes
    • H04W4/40—Services specially adapted for particular environments, situations or purposes for vehicles, e.g. vehicle-to-pedestrians [V2P]
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W72/00—Local resource management
    • H04W72/02—Selection of wireless resources by user or terminal

Definitions

  • the present application relates to the field of communication technology, and in particular, to a signal transmission method and device.
  • the terminal device For downlink positioning, the terminal device completes positioning measurement and reporting by measuring the positioning reference signal (PRS) sent by the transmission reception point (TRP).
  • PRS positioning reference signal
  • TRP transmission reception point
  • Each TRP is configured with a dedicated positioning Resources, that is, each TRP corresponds to one or more PRS resource sets;
  • SRS sounding reference signal
  • the 3rd -generation partnership project (3GPP) is studying positioning based on sidelinks, that is, terminal equipment can receive or send positioning reference signals to achieve SL positioning by measuring sidelinks.
  • 3GPP 3rd -generation partnership project
  • the resources of the sidelink are relatively tight, and how to transmit positioning reference signals in the sidelink is a technical problem that needs to be solved urgently.
  • Embodiments of the present application provide a signal transmission method and device, which can realize positioning reference signal transmission in the sidelink, thereby improving the resource utilization of the sidelink.
  • the present application provides a signal transmission method.
  • the method may include: determining a candidate resource set for transmitting the reference signal according to the transmission resource information of the reference signal; determining that the candidate resource set is not occupied within the resource awareness window. at least one candidate resource; send reference signals on N candidate resources in at least one candidate resource within the resource selection window; N is a positive integer greater than or equal to 1.
  • the reference signal may be a positioning reference signal, thereby enabling transmission of the positioning reference signal on the sidelink, thereby improving resource utilization of the sidelink.
  • the above method further includes: receiving a positioning request, where the positioning request is used to request SL positioning.
  • the positioning request may come from other terminal devices that need to receive the above reference signal. It can be seen that by receiving the positioning request, determination of at least one unoccupied candidate resource in the candidate resource set within the resource awareness window can be triggered.
  • the above method further includes: after receiving the positioning request, perform resource sensing on the candidate resource set within the resource sensing window; and determine at least one unoccupied candidate in the candidate resource set within the resource sensing window.
  • the resources may include: determining at least one unoccupied candidate resource in the candidate resource set based on the resource sensing result of the candidate resource set within the resource sensing window. It can be seen that after receiving the positioning request, starting resource sensing for the candidate resource set within the resource sensing window can save power consumption.
  • the above method also includes: after receiving the positioning request, determining For the resource sensing results of the candidate resource set, the resource sensing window is located before the time domain resource of the positioning request; determining at least one unoccupied candidate resource in the candidate resource set within the resource sensing window may include: according to the positioning request within the resource sensing window.
  • the resource sensing result of the candidate resource set determines at least one unoccupied candidate resource in the candidate resource set. This helps to improve the reliability of determining at least one unoccupied candidate resource in the candidate resource set, and further improves the possibility of successful transmission of the reference signal.
  • the transmission resource information of the reference signal includes at least one of the following references: reference signal resource period, reference signal starting frequency domain resource position, reference signal resource starting time domain resource position, reference Number of symbols occupied by the signal, resource element (RE) offset, reference signal pattern, reference signal subcarrier spacing, cyclic prefix (CP) type, number of resource blocks (RB) occupied by the reference signal . It can be seen that through the parameters included in the transmission resource information of the reference signal, a set of candidate resources for transmitting the reference signal can be determined.
  • the above method further includes: sending side link control information (SCI), where the SCI includes some or all parameters in the transmission resource information of the reference signal.
  • SCI side link control information
  • the transmission resource information of the reference signal is preconfigured.
  • the parameters in the transmission resource information of the reference signal are configured for the carrier channel; or,
  • the parameters in the transmission resource information of the above reference signal are configured for the partial bandwidth BWP; or,
  • the parameters in the transmission resource information of the above reference signal are configured for the resource pool; or,
  • Some parameters in the transmission resource information of the reference signal are configured for the carrier channel, some parameters are configured for the BWP, and/or some parameters are configured for the resource pool.
  • the present application provides a signal transmission method.
  • the method may include: determining a candidate resource set that can be used to transmit the reference signal according to the transmission resource information of the reference signal; and selecting all or part of the candidate resources included in the candidate resource set. On the candidate resource, the reference signal is received. It can be seen that on all candidate resources or part of the candidate resources included in the candidate resource set, an attempt is made to receive the reference signal to reduce the probability of missing the reference signal.
  • the above method also includes: sending a positioning request, where the positioning request is used to request side link SL positioning. It can be seen that SL positioning can be triggered by sending a positioning request.
  • the starting receiving time domain resource position of the reference signal and the sending time domain resource end position of the positioning request are separated by a first duration, and the first duration is preconfigured. It can be seen that the first duration can be used to determine when to start trying to receive the above reference signal.
  • the transmission resource information of the reference signal includes at least one of the following parameters: reference signal resource period, reference signal starting frequency domain resource position, reference signal starting time domain resource position, reference signal Number of symbols occupied, RE offset, reference signal pattern, reference signal subcarrier spacing, number of RBs occupied by the reference signal, CP type. It can be seen that through the parameters included in the transmission resource information of the reference signal, a set of candidate resources for transmitting the reference signal can be determined.
  • the transmission resource information of the reference signal is preconfigured.
  • the parameters in the transmission resource information of the reference signal are configured for the carrier channel; or,
  • the parameters in the transmission resource information of the above reference signal are configured for BWP; or,
  • the parameters in the transmission resource information of the above reference signal are configured for the resource pool; or,
  • Some parameters in the transmission resource information of the reference signal are configured for the carrier channel, some parameters are configured for the BWP, and/or some parameters are configured for the resource pool.
  • the above method further includes: receiving the SCI; and determining a terminal device identifier according to the SCI, where the terminal device identifier is used to identify the sending device of the reference signal. It can be seen that according to the SCI, it can be known which terminal device the above reference signal comes from.
  • the above-mentioned SCI includes some or all parameters in the transmission resource information of the reference signal. It can be seen that by carrying some or all parameters through SCI, dynamic adjustment of parameters can be achieved, thereby improving transmission flexibility.
  • the present application provides a communication device, which includes a communication unit and a processing unit, wherein the processing unit is configured to determine a candidate resource set for transmitting the reference signal according to the transmission resource information of the reference signal; in resource awareness Determine at least one unoccupied candidate resource in the candidate resource set within the window; the communication unit is used to send reference signals on N candidate resources in at least one candidate resource within the resource selection window; N is a positive integer greater than or equal to 1 .
  • the present application provides a communication device, which includes a communication unit and a processing unit, wherein the processing unit is configured to determine a set of candidate resources that can be used to transmit the reference signal according to the transmission resource information of the reference signal; the communication unit, Used to receive reference signals on all candidate resources or part of the candidate resources included in the candidate resource set.
  • the present application provides a communication device, which includes a processor, a memory, and a computer program or instructions stored on the memory. It is characterized in that the processor executes the computer program or instructions to implement the first aspect and any of the above.
  • a communication device which includes a processor, a memory, and a computer program or instructions stored on the memory. It is characterized in that the processor executes the computer program or instructions to implement the first aspect and any of the above.
  • this application provides a chip.
  • the chip is configured to determine a candidate resource set for transmitting the reference signal according to the transmission resource information of the reference signal; determine at least one unoccupied candidate resource in the candidate resource set within the resource awareness window; The reference signal is sent on N candidate resources in at least one candidate resource within the resource selection window; N is a positive integer greater than or equal to 1.
  • the chip is used to determine a set of candidate resources that can be used to transmit the reference signal based on the transmission resource information of the reference signal; on all candidate resources or part of the candidate resources included in the candidate resource set, receive the reference Signal.
  • the present application provides a computer-readable storage medium.
  • Computer-readable instructions are stored in the computer storage medium.
  • the communication device causes the communication device to execute the above-mentioned first aspect and the above.
  • the method in any possible implementation manner, or the method in any possible implementation manner of performing the above second aspect.
  • the present application provides a computer program or computer program product, including code or instructions.
  • code or instructions When the code or instructions are run on a computer, the computer performs the steps of the first aspect and any possible implementation thereof. method, or perform the method of the second aspect and any of its possible implementations.
  • the present application provides a module device.
  • the module device includes a communication module, a power module, a storage module and a chip module, wherein: the power module is used to provide power for the module device. ;
  • the storage module is used to store data and instructions;
  • the communication module is used for internal communication of the module device, or for communication between the module device and external devices;
  • the chip module is used to perform the following: The method of the first aspect and any possible implementation thereof, Or perform the method in the second aspect and any possible implementation thereof.
  • the present application provides a communication system that includes a communication device for performing the method of the first aspect and any of its possible implementations, and a communication device for performing the method of the second aspect and any of its possible implementations.
  • a communication device of the method in a possible implementation manner.
  • Figure 1 is a schematic diagram of the architecture of a communication system applying this application
  • Figure 2 is a schematic diagram of a resource pool
  • Figure 3 is a schematic flow chart of a signal transmission method provided by this application.
  • Figure 4 is an example diagram of determining unoccupied candidate resources provided by this application.
  • Figure 5 is another example diagram of determining unoccupied candidate resources provided by this application.
  • Figure 6 is a schematic diagram of the relationship between carrier channels, BWP and resource pools
  • FIG. 7 is a schematic flow chart of another signal transmission method provided by this application.
  • FIG. 8 is a schematic flow chart of yet another signal transmission method provided by this application.
  • Figure 9 is a schematic structural diagram of a communication device provided by this application.
  • FIG. 10 is a schematic structural diagram of another communication device provided by this application.
  • Figure 11 is a schematic structural diagram of a chip module provided by an embodiment of the present application.
  • words such as “first” and “second” are used to distinguish the same or similar items with substantially the same functions and effects.
  • words such as “first” and “second” do not limit the number and execution order, and words such as “first” and “second” do not limit the number and execution order.
  • “And/or” describes the relationship between related objects, indicating that there can be three relationships.
  • a and/or B can mean: A exists alone, A and B exist simultaneously, and B exists alone.
  • the character “/” generally indicates that the related objects are in an "or” relationship.
  • This application can be applied to the fifth generation (5th generation, 5G) system, which can also be called the new radio (new radio, NR) system; or can be applied to the sixth generation (6th generation, 6G) system, or the seventh generation ( 7th generation (7G) system, or other communication systems in the future; or it can also be used for device to device (D2D) system, machine to machine (M2M) system, vehicle to everything (V2X) )etc.
  • 5G fifth generation
  • NR new radio
  • the communication system shown in Figure 1 may include but is not limited to: terminal device 101 and terminal device 102.
  • the communication system shown in Figure 1 may also include a network device 103.
  • the number and form of the devices in Figure 1 are for example and do not constitute a limitation on the embodiments of the present application.
  • actual applications may include multiple network devices and/or more terminal devices.
  • Terminal equipment also known as user equipment (UE), mobile station (MS), Mobile terminals (MT), etc.
  • UE user equipment
  • MS mobile station
  • MT Mobile terminals
  • terminal devices are: mobile phones, tablets, laptops, PDAs, mobile internet devices (MID), wearable devices, virtual reality (VR) devices, augmented reality Augmented reality (AR) equipment, wireless terminals in industrial control, wireless terminals in self-driving, wireless terminals in remote medical surgery, smart grid Wireless terminals in transportation safety, wireless terminals in smart cities, wireless terminals in smart homes, etc.
  • MID mobile internet devices
  • VR virtual reality
  • AR augmented reality Augmented reality
  • the device used to implement the functions of the terminal device may be a terminal device; it may also be a device that can support the terminal device to implement the function, such as a chip module.
  • the device may be installed in the terminal device or in conjunction with the terminal device. Matching use.
  • the technical solution provided by this application is described by taking the device for realizing the functions of the terminal device being a terminal device as an example.
  • Network equipment also called access network equipment, refers to the radio access network (RAN) node (or equipment) that connects terminal equipment to the wireless network, and can also be called a base station.
  • RAN nodes are: evolved Node B (gNB), transmission reception point (TRP), evolved Node B (evolved Node B, eNB), radio network controller, RNC), Node B (Node B, NB), base station controller (BSC), base transceiver station (BTS), home base station (for example, home evolved NodeB, or home Node B, HNB) , baseband unit (base band unit, BBU), or wireless fidelity (wireless fidelity, Wifi) access point (access point, AP), etc.
  • gNB evolved Node B
  • TRP transmission reception point
  • eNB evolved Node B
  • RNC radio network controller
  • Node B Node B
  • BSC base station controller
  • BTS base transceiver station
  • home base station for example, home evolved NodeB, or home Node
  • the network device may include a centralized unit (CU) node, a distributed unit (DU) node, or a RAN device including a CU node and a DU node.
  • CU centralized unit
  • DU distributed unit
  • RAN device including a CU node and a DU node.
  • the communication interface between the terminal device 101 and the terminal device 102 may be called a PC5 port or a side link (SL) port, that is, the communication interface between the terminal devices may be called a PC5 port or a SL port.
  • the communication link between the terminal device 101 and the terminal device 102 may be called a side link (SL), and the side link may also be described as a side link, a through link, a direct link, a direct link, or an auxiliary link. link or PC5 link, etc.
  • the communication interface between the network device 103 and the terminal device may be called a Uu port, and the communication link between the network device 103 and the terminal device may be called a Uu link.
  • the Uu link may also be described as a Uu port link or main link. wait.
  • both terminal device 101 and terminal device 102 are within the coverage of network device 103, and terminal device 101 and terminal device 102 can communicate directly, and terminal device 101 and network device 103 can communicate. 102 and network device 103 can communicate.
  • the terminal device 101 is within the coverage of the network device 103, and the terminal device 102 is outside the coverage of the network device 103. Furthermore, the terminal device 101 and the terminal device 102 can communicate directly, and the terminal device 101 and the terminal device 102 can directly communicate with each other.
  • the network device 103 can communicate; or, the terminal device 102 is within the coverage of the network device 103, and the terminal device 101 is outside the coverage of the network device 103, and then the terminal device 101 and the terminal device 102 can communicate directly, and the terminal device 102 and Network device 103 can communicate.
  • both the terminal device 101 and the terminal device 102 are outside the coverage of the network device 103, and the terminal device 101 and the terminal device 102 can communicate directly.
  • the SL resource allocation method can be divided into two modes, namely mode 1 and mode 2.
  • Mode 1 is the resource allocation method scheduled by the base station, that is, the base station allocates SL resources to the terminal equipment.
  • Mode 2 is a way for terminal devices to independently select SL resources, such as selecting SL resources from a resource pool.
  • Mode 2 is divided into four submodes (submode), namely mode 2a, mode 2b, mode 2c and mode 2d.
  • Mode 2a is a terminal device that independently selects SL resources for SL transmission.
  • Mode 2a can also be described as a perception-based resource selection mode;
  • mode 2b is a terminal device that assists other terminal devices in selecting SL resources for transmission;
  • mode 2c is through the base station The configured grant configures SL transmission;
  • mode 2d is a terminal device that schedules SL transmission for other terminal devices.
  • This application involves mode 2a, that is, this application adopts the perception-based resource selection mode.
  • the perception-based resource selection mode involves resource pools.
  • the resource pool refers to some preconfigured time-frequency resources.
  • the preconfigured time domain resource is subframe 1 and the frequency domain resource is 20M bandwidth.
  • the granularity in the time domain is slot
  • the granularity in frequency domain is subchannel.
  • a subchannel may include m RBs, and the specific value of m may be configured by the higher layer.
  • the higher layer configures 6 or 12 RBs, etc.
  • the terminal device determines that n sub-channels are needed for transmission based on the size of the data packet (n is a positive integer greater than or equal to 1), and then the transmission resources are n consecutive n sub-channels in a slot in the resource pool. channel.
  • Each transmission resource will simultaneously transmit the physical side link control channel (physical side link control channel, PSCCH) and physical side link shared channel (PSSCH), which means that each transmission will include PSCCH and PSSCH.
  • the light gray part in Figure 2 represents PSCCH
  • the dark gray part represents PSSCH.
  • reference signals are used to describe reference signals sent between terminal devices to implement SL positioning.
  • Reference signals can also be described as positioning reference signals, SL reference signals, or SL positioning reference signals.
  • This application does not limit the name of the reference signal. It is not ruled out that other names are used to describe the signals sent between terminal devices in the future to achieve SL positioning.
  • reference signal. The reference signal may be expressed in the form of SL-PRS or SLPRS or SPRS or SLSRS. As the standard evolves, other forms may be used to represent the reference signal. The following takes the reference signal in the form of SPRS as an example.
  • SL positioning refers to positioning based on the SL port or SPRS sent by SL.
  • terminal device 2 sends SPRS to terminal device 1.
  • Terminal device 1 can determine the location of terminal device 1 and/or by measuring the SPRS sent by terminal device 2. Or the location information of terminal device 2.
  • SL positioning can also be described as SL port positioning, side link positioning, auxiliary link positioning, or through link positioning.
  • the candidate resource set may include one or more candidate resources, and the one or more candidate resources are configured for transmitting reference signals.
  • the candidate resource set is one or more candidate resources configured for transmitting SPRS.
  • candidate resources include time-frequency resources, etc.
  • Which candidate resource(s) in the candidate resource set can be used to transmit the reference signal, and which candidate resource(s) cannot be used to transmit the reference signal, can be determined through resource sensing, for example, performing resource sensing on the candidate resource set within the resource sensing window to determine Candidate resources in the candidate resource set that can be used to transmit reference signals, and/or candidate resources in the candidate resource set that cannot be used to transmit reference signals.
  • Performing resource sensing on the candidate resource set may obtain a resource sensing result of the candidate resource set.
  • the resource sensing result of the candidate resource set may include candidate resources in the candidate resource set that can be used to transmit reference signals, and/or candidate resources in the candidate resource set that cannot be used for transmitting reference signals.
  • candidate resources for transmitting reference signals are called unoccupied candidate resources in the candidate resource set, and the candidate resources in the candidate resource set that cannot be used to transmit reference signals are called candidate resources.
  • the occupied candidate resources in the collection It should be noted that these two terms are used for examples and do not constitute a limitation on this application.
  • the unoccupied candidate resources in the candidate resource set will be referred to as unoccupied candidate resources
  • the occupied candidate resources in the candidate resource set will be referred to as occupied candidate resources.
  • a certain candidate resource is not occupied, which means that the candidate resource is not occupied by other terminal devices, and the candidate resource can be used by the terminal device to transmit reference signals. Being not occupied by other terminal devices may be understood to mean that the candidate resource is not used by other terminal devices to transmit positioning reference signals, and/or is not reserved by other terminal devices for transmitting positioning reference signals.
  • terminal device 1 determines candidate resource 1 and candidate resource 2 as candidate resources for sending positioning reference signals in resource pool 1.
  • candidate resource 1 is not used by terminal device 2 to send positioning reference signals within resource awareness window 1, but Reserved and occupied by terminal device 3, then candidate resource 1 is not an unoccupied candidate resource; within resource awareness window 1, candidate resource 2 is not used by terminal device 2 to send positioning reference signals, nor is it reserved by terminal device 3.
  • To send positioning reference signals then candidate resource 2 is an unoccupied candidate resource.
  • a candidate resource When a candidate resource is occupied, it means that the candidate resource is occupied by other terminal equipment, and therefore the candidate resource cannot be used by the terminal equipment to transmit reference signals. Being occupied by other terminal devices can be understood as indicating that the candidate resource is used by other terminal devices to transmit positioning reference signals, and/or is reserved by other terminal devices for transmitting positioning reference signals. For example, terminal device 1 determines candidate resource 1 and candidate resource 2 as candidate resources for sending positioning reference signals in resource pool 1.
  • Candidate resource 1 is not used by terminal device 2 to send positioning reference signals within resource awareness window 1, but If it is reserved and occupied by the terminal device 3, then the candidate resource 1 is an occupied candidate resource; within the resource awareness window 1, the candidate resource 2 is used by the terminal device 2 to send the positioning reference signal, then the candidate resource 2 is an occupied candidate resource.
  • the signal transmission method provided by this application is described below.
  • the signal transmission method may be executed by the terminal device, or by a device matching the terminal device, such as a chip, a chip module, or a processor.
  • This application takes the signal transmission method performed by a terminal device as an example to illustrate.
  • Figure 3 is a schematic flow chart of a signal transmission method provided by an embodiment of the present application, which may include but is not limited to the following steps:
  • the terminal device determines a set of candidate resources for transmitting the reference signal based on the transmission resource information of the reference signal.
  • the transmission resource information of the reference signal is used to describe the resources configured for transmitting the reference signal, such as time-frequency resources.
  • the transmission resource information of the reference signal can also be described as resource configuration information of the reference signal, transmission configuration information of the reference signal, or transmission resource configuration information of the reference signal, etc.
  • the transmission resource information of the reference signal is not used to transmit data, for example, it is not used to transmit PSSCH.
  • the transmission resource information of the reference signal may include at least one of the following parameters:
  • the reference signal resource cycle can also describe the resource cycle of the reference signal, or the transmission cycle of the reference signal, etc.
  • the reference signal can be transmitted periodically.
  • the reference signal resource period is 10ms.
  • the starting frequency domain resource position of the reference signal is used to describe where the frequency domain resources of the reference signal start to be occupied.
  • the starting frequency domain resource position of the reference signal is used to describe the starting resource block (RB) index of the reference signal.
  • the starting time domain resource position of the reference signal is used to describe where the time domain resources of the reference signal start to be occupied.
  • the reference signal starting time domain resource position is used to describe the starting time slot and/or starting symbol of the reference signal.
  • the number of symbols occupied by the reference signal is used to describe how many symbols the reference signal occupies in the time domain.
  • the number of symbols occupied by the reference signal can be used to describe the number of symbols continuously occupied by the reference signal.
  • the number of RBs occupied by the reference signal is used to describe how many RBs the reference signal occupies in the frequency domain.
  • the number of RBs occupied by the reference signal can be used to describe the number of RBs continuously occupied by the reference signal.
  • ⁇ RE offset is used to describe the amount of RE offset relative to the previous reference signal, that is, how many RE offsets there are.
  • ⁇ Reference signal subcarrier spacing (subcarrier spacing, SCS), used to describe the subcarrier spacing of the reference signal.
  • the subcarrier spacing may be, for example, 15kHz, 30kHz, 60kHz, 120kHz, or 240kHz.
  • CP types can be divided into normal cyclic prefix (normal cyclic prefix) and extended cyclic prefix (extended cyclic prefix).
  • the terminal device can determine a candidate resource set for transmitting the reference signal through parameters included in the transmission resource information of the reference signal.
  • the candidate resource set may include one or more candidate resources, and the specific number of candidate resources is related to the transmission resource information of the reference signal.
  • the terminal device determines at least one unoccupied candidate resource in the candidate resource set within the resource awareness window.
  • the terminal device determines at least one unoccupied candidate resource in the candidate resource set based on the resource sensing result of the candidate resource set within the resource sensing window.
  • a certain candidate resource is not occupied means that the candidate resource is not occupied by other terminal devices.
  • Not being occupied by other terminal devices can be understood to mean that the candidate resource is not used by other terminals to send positioning reference signals, and/or is not used by other terminals.
  • the terminal equipment is reserved for sending positioning reference signals.
  • the terminal device 1 determines that the candidate resource 1 and the candidate resource 2 are candidate resources for transmitting the positioning reference signal in the resource pool according to the transmission resource information of the reference signal, and the terminal device 1 determines that the candidate resource 1 is not used by the terminal device 2 according to the resource sensing result.
  • candidate resource 1 is not an unoccupied candidate resource
  • candidate resource 2 is not used by terminal device 2 to send positioning reference signals, nor is it reserved by terminal device 3 Used to send positioning reference signals, then candidate resource 2 is an unoccupied candidate resource.
  • the terminal device sends the reference signal on N candidate resources in at least one candidate resource within the resource selection window.
  • N is a positive integer greater than or equal to 1, and the value of N can be the same as the number of at least one candidate resource. It can also be less than the number of at least one candidate resource. For example, if the number of at least one candidate resource is 3, then the value of N can be 1, 2, or 3. It can be understood that the number of candidate resources for transmitting the reference signal is less than or equal to the number of the above-mentioned at least one candidate resource.
  • the resource awareness window is earlier than the resource selection window.
  • the size of the resource awareness window and the size of the resource selection window can be individually preconfigured or preset, or the values of the size of the resource awareness window and resource selection window corresponding to SL data transmission can be used.
  • the terminal device can also receive a positioning request.
  • the positioning request is used to request SL positioning, and can also be understood as being used to trigger resource selection.
  • the positioning request may be sent by other terminal devices.
  • terminal device 1 receives a positioning request from terminal device 2.
  • the terminal device may receive the positioning request before step S302 or before step S303.
  • the specific step before which step is executed is not limited in this application.
  • Mechanism 1 The terminal device periodically performs resource sensing on the candidate resource set, where, within a cycle, the terminal device senses the candidate resource set within the resource sensing window of the cycle. If the terminal device receives the positioning request, the terminal device determines at least one unoccupied candidate resource in the candidate resource set based on the resource sensing result of the candidate resource set within a resource sensing window located before the time domain resource of the positioning request. The reference signal is sent on N candidate resources in at least one candidate resource within the resource selection window.
  • the terminal device determines at least one unoccupied candidate resource in the candidate resource set based on the resource sensing result within a resource sensing window located before the time domain resource of the positioning request and closest to the time domain resource of the positioning request. This helps to improve the reliability of determining at least one unoccupied candidate resource in the candidate resource set, and further improves the possibility of successful transmission of the reference signal.
  • the time domain resource of the positioning request may be, for example, the time slot or symbol occupied by the positioning request.
  • the time domain resource of the positioning request takes the time slot occupied by the positioning request as an example.
  • the time slot index corresponding to the positioning request is n.
  • the resource awareness window located before the time domain resource of the positioning request can also be understood as the time slot of the resource awareness window is located before the time slot occupied by the positioning request, or the time slot index corresponding to the resource awareness window is smaller than the time slot index corresponding to the positioning request.
  • the maximum time slot index corresponding to the resource awareness window is less than or equal to the time slot index corresponding to the positioning request.
  • the candidate resource set includes candidate resource 1 (the first row of resources in Figure 4) and candidate resource 2 (the second row of resources in Figure 4).
  • the time slot index corresponding to the positioning request is n.
  • the terminal device is located The resource sensing result of the candidate resource set in the resource sensing window before time slot index n (such as candidate resource 1 is not occupied, candidate resource 2 is occupied), determines the unoccupied candidate resource 1 in the candidate resource set, and then the terminal device In the resource selection window located after the slot index n, candidate resource 1 is selected to be used to transmit the reference signal.
  • the occupied candidate resource 2 is not used for sending reference signals. If all candidate resources in the candidate resource set are occupied, the terminal device may not send the reference signal.
  • the relationship between the resource awareness window, the time slot index n and the resource selection window in the time domain may be configured or preset.
  • the terminal device After receiving the positioning request, the terminal device starts or triggers resource sensing of the candidate resource set, that is, performs resource sensing on the candidate resource set within the resource sensing window; based on the resource sensing result, determines the candidate resources within the resource sensing window.
  • the resource sensing result of the set is determined, and based on the resource sensing result, at least one unoccupied candidate resource in the candidate resource set is determined, and reference information is sent to N candidate resources in at least one candidate resource within the resource selection window. Number. This helps save the power consumption of terminal equipment.
  • the terminal device Before receiving the positioning request, the terminal device does not perform resource sensing on the candidate resource set. Instead, after receiving the positioning request, the terminal device performs resource sensing on the candidate resource set within the resource sensing window.
  • the size of the resource awareness window P (for example, P time slots) may be preconfigured, or the relationship between the resource awareness window P and the time domain resources of the positioning request may be preconfigured.
  • the candidate resource set includes candidate resource 1 and candidate resource 2.
  • the time slot index corresponding to the positioning request is n.
  • the terminal device starts the resource awareness window on the time slot with the time slot index n.
  • the size of the resource awareness window is, for example, predetermined. For the configured P time slots, based on the resource sensing results of the candidate resource set within the resource sensing window (such as candidate resource 1 is not occupied, candidate resource 2 is occupied), the unoccupied candidate resource 1 in the candidate resource set is determined, and then The terminal device starts the resource selection window on the time slot with the time slot index n+P (or n+P+k, k is, for example, the time slot interval between the preconfigured resource sensing window and the resource selection window).
  • the resource selection window The size of is, for example, preconfigured Q time slots, and candidate resource 1 is selected to be used to transmit the reference signal within the resource selection window. It should be noted that the occupied candidate resource 2 is not used for sending reference signals. If all candidate resources in the candidate resource set are occupied, the terminal device may not send the reference signal.
  • Example 2 is an example diagram of determining unoccupied candidate resources as shown in Figure 5.
  • the candidate resource set includes candidate resource 1 (the first row of resources in Figure 5) and candidate resource 2 (the second row of resources in Figure 5).
  • the time slot index corresponding to the positioning request is n
  • the terminal device is
  • the resource awareness window is started on the time slot with the slot index n+k1 (k1 is, for example, the preconfigured k1 time slots).
  • the size of the resource awareness window is, for example, the preconfigured P time slots.
  • the set of resource sensing results determines the unoccupied candidate resource 1 in the candidate resource set, and then the terminal device is in the time slot index n+P+k1+k2 ( or n+P+k2) (k2 is, for example, the time slot interval between the preconfigured resource sensing window and the resource selection window).
  • the resource selection window is, for example, preconfigured Q times. slot, and select candidate resource 1 to send the reference signal within the resource selection window. It should be noted that the occupied candidate resource 2 is not used for sending reference signals. If all candidate resources in the candidate resource set are occupied, the terminal device may not send the reference signal.
  • At least one unoccupied candidate resource in the set of candidate resources determined within the resource awareness window is used to determine the candidate resource for transmitting the reference signal, so as to realize the transmission of the reference signal.
  • the reference signal may be a sidelink reference signal, thereby realizing transmission of the sidelink reference signal, thereby improving resource utilization of the sidelink.
  • the transmission resource information of the reference signal is preconfigured. Preconfigured can be understood as being configured by the terminal device itself, for example, the higher layer of the terminal device configures the transmission resource information of the reference signal to the lower layer of the terminal device.
  • the transmission resource information of the preconfigured reference signal may be one or more sets, and the transmission resource information of each set of the reference signal may include at least one of the above parameters. Transmission resource information of the reference signal is preconfigured so that the terminal device determines a set of candidate resources for transmitting the reference signal, thereby realizing transmission of the sidelink reference signal.
  • the parameters in the transmission resource information of the reference signal are configured for the carrier channel, for example, the SL carrier channel. For example, if all parameters in the transmission resource information of the reference signal are configured for carrier channel 1, then all parameters are applicable to the entire carrier channel 1, that is, the parameters corresponding to the reference signal transmission on carrier channel 1 are the same.
  • the parameters in the transmission resource information of the reference signal are configured for BWP, for example, they are configured for SL BWP.
  • all parameters in the transmission resource information of the reference signal are for BWP1 configured, then all parameters apply to the entire BWP1, that is, the parameters corresponding to the reference signal transmission on BWP1 are the same.
  • the parameters in the transmission resource information of the reference signal are configured for the resource pool. For example, if all parameters in the reference signal transmission resource information are configured for resource pool 1, then all parameters are applicable to the entire resource pool 1, that is, the parameters corresponding to the reference signal transmission on resource pool 1 are the same.
  • some parameters in the transmission resources of the reference signal are configured for the carrier channel, some parameters are configured for the BWP, and/or some parameters are configured for the resource pool.
  • Parameters in the transmission resource information that can also be described as reference signals satisfy at least one of the following conditions: some parameters are configured for carrier channels, some parameters are configured for BWP, and some parameters are configured for resource pools. Among them, some parameters can also be described as at least one parameter or K parameters, where K is a positive integer greater than or equal to 1.
  • the reference signal pattern, reference signal subcarrier spacing and the number of RBs occupied by the reference signal are configured for carrier channel 1, then the reference signal transmission on carrier channel 1 corresponds to the reference signal pattern, reference signal subcarrier spacing and reference signal.
  • the number of RBs occupied by the signals is the same; the starting time domain resource position of the reference signal, the number of symbols occupied by the reference signal and the RE offset are configured for BWP1, then the starting time domain resource position of the reference signal corresponding to the reference signal transmission on BWP1 , the number of symbols occupied by the reference signal and the RE offset are the same; the remaining parameters are configured for resource pool 1, so the remaining parameters corresponding to the reference signal transmission on resource pool 1 are the same.
  • the terminal device can quickly determine the transmission resource information of the reference signal based on at least one of the carrier channel, BWP and resource pool where the reference signal is transmitted, and then determine the candidate resource set for transmitting the reference signal, thereby achieving side-by-side Transmission of downlink reference signals. It can be understood that the terminal device determines the transmission resource information of the reference signal according to at least one of the preconfigured carrier channel, BWP and resource pool.
  • the parameters in the transmission resources of the reference signal can be divided into carrier channel level, BWP level, and resource pool level. All parameters can be classified into one level, or different parameters can be classified into different levels.
  • the relationship between the carrier channel, BWP and resource pool can be seen in Figure 6.
  • the range of the carrier channel is greater than the range of the BWP, and the range of the BWP is greater than the range of the resource pool.
  • the bandwidth of carrier channel 1 is 20M
  • the bandwidth of BWP1 is 10M
  • the bandwidth of the resource pool is 4M.
  • some parameters in the transmission resource information of the reference signal are preconfigured, and another part of the parameters can be carried through the SCI.
  • the terminal device not only sends the reference signal on the N candidate resources, but also sends the SCI.
  • the SCI includes some or all parameters in the transmission resource information of the reference signal.
  • the SCI includes one or more of the starting time domain resource position of the reference signal, the number of symbols occupied by the reference signal, the RE offset, and the reference signal pattern.
  • a reference signal transmission resource transmission block can transmit one or more reference signal transmission resources.
  • Different reference signals can occupy different symbols, different REs, or different reference signal patterns.
  • the terminal equipment sending the reference signal needs to indicate one or more parameters in the SCI, such as the starting time domain resource position of the reference signal, the number of symbols occupied by the reference signal, the RE offset, and the reference signal pattern.
  • Different reference signals occupy different parameters. By indicating different parameters through SCI, dynamic adjustment can be achieved, thereby improving transmission flexibility.
  • the time slot in which the terminal device sends the reference signal and the time slot in which the SCI is sent are the same time slot or different time slots, that is, the reference signal and the SCI can be located in the same time slot or different time slots.
  • the reference signal and SCI are located in the same time slot, which helps the terminal device receiving the reference signal to quickly decode the SCI.
  • the reference signal and SCI are located in different time slots, which helps improve the reliability of transmission.
  • Figure 7 is a schematic flowchart of another signal transmission method provided by an embodiment of the present application, which may include but is not limited to the following steps:
  • the terminal device determines a set of candidate resources for transmitting the reference signal based on the transmission resource information of the reference signal.
  • step S701 For the implementation process of step S701, please refer to the specific description of step S301, which will not be described again here.
  • the terminal device receives a reference signal on all or part of the candidate resources included in the candidate resource set.
  • the terminal device can also send a positioning request.
  • the positioning request is used to request SL positioning, and can also be understood as being used to trigger resource selection by the entire device that receives the positioning request.
  • the positioning request may be sent to other terminal devices, for example, terminal device 2 sends a positioning request to terminal device 1.
  • the terminal device may send a positioning request before step S702.
  • the terminal device after sending the positioning request, the terminal device immediately attempts to receive the reference signal on all or part of the candidate resources included in the candidate resource set. This reduces the probability of missing the reference signal.
  • the terminal device delays or intervals a first period of time and attempts to receive the reference signal on all or part of the candidate resources included in the candidate resource set. This helps save power consumption.
  • the first duration is preconfigured, and the unit of the first duration may be symbols, for example, the first duration may be X symbols; or the unit of the first duration may be a time slot, for example, the first duration may be X hours. gap; alternatively, the unit of the first duration may be milliseconds (ms) or microseconds (us), etc.
  • the value of X can be 0 or a positive integer greater than or equal to 1.
  • the size of the first duration is the same as the size of the preconfigured resource awareness window.
  • the terminal device before receiving the reference signal, receives the SCI and determines the terminal device identity based on the SCI.
  • the terminal device identifier is used to identify the sending device of the reference signal, that is, the terminal device that sends the reference signal.
  • the terminal device identification is determined according to the SCI, for example, the SCI is decoded to determine the terminal device identification.
  • Decoding SCI includes decoding first-order SCI and/or second-order SCI. By decoding the SCI, the terminal device can determine which terminal device the reference signal comes from.
  • Terminal device identification may include but is not limited to radio network temporary identity (RNTI), International Mobile Subscriber Identification Number (IMSI), International Mobile Equipment Identity (International Mobile Equipment Identity, IMEI) wait.
  • RNTI radio network temporary identity
  • IMSI International Mobile Subscriber Identification Number
  • IMEI International Mobile Equipment Identity
  • the SCI may include some or all parameters in the transmission resource information of the reference signal.
  • the SCI includes one or more of the starting time domain resource position of the reference signal, the number of symbols occupied by the reference signal, the RE offset, and the reference signal pattern.
  • SCI carries some or all parameters in the transmission resource information of the reference signal, which can be dynamically adjusted to improve transmission flexibility.
  • reference signals are attempted to be received on all or part of the candidate resources included in the candidate resource set to reduce the probability of missing the reference signal.
  • the terminal device in the embodiment shown in Figure 3 is used to send reference signals
  • the terminal device in the embodiment shown in Figure 7 is used to receive reference signals.
  • the two can be the same terminal device, that is, both reference signals can be implemented. sending of signals, The reception of the reference signal may also be implemented; or, the two are different terminal devices, one is used to implement the sending of the reference signal, and the other is used to implement the receiving of the reference signal.
  • Figure 8 is a schematic flowchart of another signal transmission method provided by an embodiment of the present application, which may include but is not limited to the following steps:
  • the first terminal device determines a set of candidate resources for transmitting the reference signal based on the transmission resource information of the reference signal.
  • the second terminal device determines a candidate resource set for transmitting the reference signal according to the transmission resource information of the reference signal.
  • the first terminal device determines at least one unoccupied candidate resource in the candidate resource set within the resource awareness window.
  • the first terminal device sends a reference signal to the second terminal device on N candidate resources in at least one candidate resource within the resource selection window.
  • the second terminal device receives the reference signal on all or part of the candidate resources included in the candidate resource set.
  • the terminal device that sends the reference signal is called the first terminal device
  • the terminal device that receives the reference signal is called the second terminal device.
  • the first terminal device can also be described as a sending device, a sending end, a sending terminal, a first device or a first terminal, etc.
  • the second terminal device can also be described as a receiving device, a receiving end, a receiving terminal, a second device or Second terminal etc.
  • the embodiment shown in Figure 8 also includes step S800, in which the second terminal device sends a positioning request to the first terminal device.
  • the first terminal device receives the positioning request from the second terminal device.
  • Step S800 may be executed after step S802, and it is not limited whether step S800 is executed before step S802 or before step S804.
  • Figure 8 illustrates the signal transmission method from an interactive perspective.
  • Figure 3 For parts that are the same as or similar to the embodiment shown in Figure 3, refer to the description of Figure 3.
  • Figure 7 For parts that are the same or similar to the embodiment shown in Figure 7, refer to the description of Figure 7. .
  • FIG. 9 is a schematic structural diagram of a communication device provided by an embodiment of the present application.
  • the communication device 90 may be a terminal device or a device matching the terminal device.
  • the communication device 90 includes a processing unit 901 and a communication unit 902 .
  • the processing unit 901 is configured to determine a candidate resource set for transmitting the reference signal according to the transmission resource information of the reference signal; and determine at least one unoccupied candidate resource in the candidate resource set within the resource awareness window. ;
  • the communication unit 902 is configured to send reference signals on N candidate resources in at least one candidate resource within the resource selection window, where N is a positive integer greater than or equal to 1.
  • the communication unit 902 is also configured to receive a positioning request, which is used to request side link SL positioning.
  • processing unit 901 is also configured to perform resource sensing on the candidate resource set within the resource sensing window after the communication unit 902 receives the positioning request;
  • the processing unit 901 is specifically configured to determine at least one unoccupied candidate resource in the candidate resource set based on the resource sensing result of the candidate resource set within the resource sensing window.
  • the communication unit 902 is also configured to determine the resource sensing results of the candidate resource set within the resource sensing window after receiving the positioning request.
  • the resource sensing window is located before the time domain resource of the positioning request;
  • the processing unit 901 is specifically configured to determine at least one unoccupied candidate resource in the candidate resource set based on the resource sensing result of the candidate resource set within the resource sensing window.
  • the transmission resource information of the reference signal includes at least one of the following parameters:
  • Reference signal resource period reference signal starting frequency domain resource position, reference signal resource starting time domain resource position, reference signal symbol number, RE offset, reference signal pattern, reference signal subcarrier spacing, CP type, reference signal Number of RBs occupied.
  • the communication unit 902 is also configured to send the SCI, where the SCI includes some or all parameters in the transmission resource information of the reference signal.
  • the transmission resource information of the reference signal is preconfigured.
  • the parameters in the transmission resource information of the reference signal are configured for the carrier channel; or,
  • the parameters in the transmission resource information of the reference signal are configured for the partial bandwidth BWP; or,
  • the parameters in the transmission resource information of the reference signal are configured for the resource pool; or,
  • Some parameters in the transmission resource information of the reference signal are configured for the carrier channel, some parameters are configured for the BWP, and/or some parameters are configured for the resource pool.
  • the processing unit 901 is configured to determine a set of candidate resources that can be used to transmit the reference signal according to the transmission resource information of the reference signal;
  • the communication unit 902 is configured to receive reference signals on all candidate resources or part of the candidate resources included in the candidate resource set.
  • the communication unit 902 is also used to send a positioning request, and the positioning request is used to request SL positioning.
  • the first time interval between the starting receiving time domain resource position of the reference signal and the end position of the sending time domain resource of the positioning request, and the first time length is preconfigured.
  • the transmission resource information of the reference signal includes at least one of the following parameters: reference signal resource period, reference signal starting frequency domain resource position, reference signal starting time domain resource position, number of symbols occupied by the reference signal, RE Offset, reference signal pattern, reference signal sub-carrier spacing, number of RBs occupied by the reference signal, CP type.
  • the transmission resource information of the reference signal is preconfigured.
  • the parameters in the transmission resource information of the reference signal are configured for the carrier channel; or,
  • the parameters in the transmission resource information of the reference signal are configured for BWP; or,
  • the parameters in the transmission resource information of the reference signal are configured for the resource pool; or,
  • Some parameters in the transmission resource information of the reference signal are configured for the carrier channel, some parameters are configured for the BWP, and/or some parameters are configured for the resource pool.
  • the communication unit 902 is also configured to receive the SCI; the processing unit 901 is also configured to determine the terminal device identification according to the SCI, and the terminal device identification is used to identify the sending device of the reference signal.
  • the SCI includes some or all parameters in the transmission resource information of the reference signal.
  • FIG. 10 is a schematic structural diagram of another communication device provided by an embodiment of the present application.
  • the communication device 100 may be a terminal device, or a device matching the terminal device.
  • the communication device can also include Includes memory 1003.
  • the transceiver 1001, the processor 1002, and the memory 1003 can be connected through the bus 1004 or other means.
  • the bus is represented by a thick line in Figure 10, and the connection methods between other components are only schematically illustrated and are not limiting.
  • the bus can be divided into address bus, data bus, control bus, etc. For ease of presentation, only one thick line is used in Figure 10, but it does not mean that there is only one bus or one type of bus.
  • the coupling in the embodiment of this application is an indirect coupling or communication connection between devices, units or modules, which may be in electrical, mechanical or other forms, and is used for information interaction between devices, units or modules.
  • the specific connection medium between the above-mentioned transceiver 1001, processor 1002, and memory 1003 is not limited in the embodiment of the present application.
  • Memory 1003 may include read-only memory and random access memory and provides instructions and data to processor 1002. A portion of memory 1003 may also include non-volatile random access memory.
  • the processor 1002 can be a central processing unit (Central Processing Unit, CPU).
  • the processor 1002 can also be other general-purpose processors, digital signal processors (Digital Signal Processor, DSP), application specific integrated circuits (Application Specific Integrated Circuit, ASIC). ), Field-Programmable Gate Array (FPGA) or other programmable logic devices, discrete gate or transistor logic devices, discrete hardware components, etc.
  • the general-purpose processor may be a microprocessor, and optionally, the processor 1002 may also be any conventional processor.
  • the memory 1003 is used to store program instructions; the processor 1002 is used to call the program instructions stored in the memory 1003 to execute the tasks of the terminal device in the corresponding embodiment of FIG. 3 or FIG. 7 . steps to perform.
  • a general-purpose computing device such as a computer including a CPU, a random access storage medium (Random Access Memory, RAM), a read-only storage medium (Read-Only Memory, ROM) and other processing elements and storage elements can be used.
  • a computer program (including program code) capable of executing each step involved in the above method is run on the device, and the method provided by the embodiment of the present application is implemented.
  • the computer program can be recorded on, for example, a computer-readable recording medium, loaded into the above-mentioned computing device through the computer-readable recording medium, and run therein.
  • the principles and beneficial effects of the communication device 100 provided in the embodiment of the present application for solving the problem are similar to the principles and beneficial effects of solving the problem of the embodiment shown in Figure 3 or Figure 7 of the present application. Please refer to the implementation of the method. The principles and beneficial effects are briefly described and will not be repeated here.
  • the aforementioned communication device may be, for example, a chip or a chip module.
  • An embodiment of the present application also provides a chip.
  • the chip includes a processor, and the processor can execute relevant steps of the terminal device in the foregoing method embodiment.
  • the chip is used to: determine a candidate resource set for transmitting the reference signal according to the transmission resource information of the reference signal; determine at least one unoccupied candidate resource in the candidate resource set within the resource awareness window; The reference signal is sent on N candidate resources in at least one candidate resource within the resource selection window; N is a positive integer greater than or equal to 1.
  • the chip is used to: determine a set of candidate resources that can be used to transmit the reference signal according to the transmission resource information of the reference signal; on all candidate resources or part of the candidate resources included in the candidate resource set, receive reference signal.
  • FIG. 11 is a schematic structural diagram of a chip module provided by an embodiment of the present application.
  • the chip module 110 can perform the relevant steps of the terminal device in the aforementioned method embodiment.
  • the chip module 110 includes: a communication interface 1101 and a chip 1102.
  • the communication interface is used for internal communication of the chip module, or for the chip module to communicate with external devices; the chip is used to implement the functions of the terminal device in the embodiment of the present application.
  • the chip 1102 is configured to determine a candidate resource set for transmitting the reference signal according to the transmission resource information of the reference signal; determine at least one unoccupied candidate resource in the candidate resource set within the resource awareness window; the communication interface 1101 The reference signal is sent on N candidate resources in at least one candidate resource within the resource selection window; N is a positive integer greater than or equal to 1.
  • the chip 1102 is used to determine a set of candidate resources that can be used to transmit the reference signal based on the transmission resource information of the reference signal; the communication interface 1101 is used to receive the reference signal on all or part of the candidate resources included in the candidate resource set. Signal.
  • the chip module 110 may also include a storage module 1103 and a power module 1104.
  • the storage module 1103 is used to store data and instructions.
  • the power module 1104 is used to provide power to the chip module.
  • each module included in it can be implemented in the form of hardware such as circuits.
  • Different modules can be located in the same component of the chip module (such as chips, circuit modules, etc.) or Among different components, or at least some of the modules can be implemented in the form of software programs, which run on the processor integrated within the chip module, and the remaining (if any) modules can be implemented in hardware such as circuits.
  • Embodiments of the present application also provide a computer-readable storage medium.
  • One or more instructions are stored in the computer-readable storage medium.
  • the one or more instructions are suitable for the processor to load and execute the method provided by the above method embodiment.
  • Embodiments of the present application also provide a computer program product containing a computer program or instructions.
  • the computer program or instructions When the computer program or instructions are run on a computer, the computer is caused to execute the method provided by the above method embodiments.
  • the steps of the method or algorithm described in the embodiments of the present application may be implemented in hardware, or may be implemented by a processor executing software instructions.
  • Software instructions can be composed of corresponding software modules, which can be stored in RAM, flash memory, ROM, erasable programmable ROM (EPROM), electrically erasable programmable read-only memory (EPROM, EEPROM), register, hard disk, removable hard disk, CD-ROM or any other form of storage media well known in the art.
  • An exemplary storage medium is coupled to the processor such that the processor can read information from the storage medium and write information to the storage medium.
  • the storage medium can also be an integral part of the processor.
  • the processor and storage media may be located in an ASIC. Additionally, the ASIC can be located in the terminal device or management device.
  • the processor and the storage medium may also exist as discrete components in the terminal device or management device.
  • the computer program product includes one or more computer instructions.
  • the computer may be a general purpose computer, a special purpose computer, a computer network, or other programmable device.
  • the computer instructions may be stored in a computer-readable storage medium or transmitted from one computer-readable storage medium to another computer-readable storage medium.
  • the computer instructions can be transmitted from a website, computer, server or data center through wired (such as coaxial cable, optical fiber, digital subscriber line (DSL)) or wireless (such as infrared, wireless, microwave, etc.) means Transmission to another website, computer, server or data center.
  • the computer-readable storage medium may be any available medium that can be accessed by a computer or a data storage device such as a server or data center integrated with one or more available media.
  • the available media may be magnetic media (eg, floppy disk, hard disk, tape), optical media (eg, digital video disc (DVD)), or semiconductor media (eg, solid state disk (SSD)) wait.
  • each device and product described in the above embodiments may be software modules/units or hardware modules/units, or they may be partly software modules/units and partly hardware modules/units.
  • each module/unit included therein can be implemented in the form of hardware such as circuits, or at least some of the modules/units can be implemented in the form of a software program.
  • the software program Running on the processor integrated inside the chip, the remaining (if any) modules/units can be implemented using circuits and other hardware methods; for various devices and products applied to or integrated into the chip module, each module/unit included in it can They are all implemented in the form of hardware such as circuits.
  • Different modules/units can be located in the same component of the chip module (such as chips, circuit modules, etc.) or in different components.
  • at least some modules/units can be implemented in the form of software programs.
  • the software program runs on the processor integrated inside the chip module, and the remaining (if any) modules/units can be implemented using circuits and other hardware methods; for each device or product that is applied to or integrated into the terminal, each module it contains /Units can all be implemented in the form of hardware such as circuits, and different modules/units can be located in the same component (for example, chip, circuit module, etc.) or in different components within the terminal, or at least some of the modules/units can be implemented in the form of software programs.
  • the software program runs on the processor integrated inside the terminal, and the remaining (if any) modules/units can be implemented using circuits and other hardware methods.

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Abstract

本申请提供一种信号传输方法及装置，可以实现侧行链路参考信号的传输，从而提高侧行链路的资源利用率。其中，该方法可包括：根据参考信号的传输资源信息，确定用于传输参考信号的候选资源集合；在资源感知窗内确定候选资源集合中未被占用的至少一个候选资源；在资源选择窗内在至少一个候选资源中的N个候选资源上发送参考信号；N为大于或等于1的正整数。

Description

信号传输方法及装置
本申请要求于2022年5月30日提交中国专利局、申请号为202210603113.5、申请名称为“信号传输方法及装置”的中国专利申请的优先权，其全部内容通过引用结合在本申请中。
技术领域
本申请涉及通信技术领域，尤其涉及一种信号传输方法及装置。
背景技术
在蜂窝通信系统中，对于下行定位，终端设备通过测量传输接收点(transmission reception point，TRP)发送的定位参考信号(positioning reference signal，PRS)完成定位测量和上报，每个TRP配置有专用的定位资源，即每个TRP对应一个或多个PRS资源集；对于上行定位，网络设备为终端设备配置专用的(sounding reference signal，SRS)资源，终端设备在特定的资源上发送SRS以实现上行定位。
目前第三代合作伙伴计划(3rd-generation partnership project，3GPP)正在研究基于侧行链路的定位，即终端设备可通过测量侧行链路接收或者发送定位参考信号实现SL定位。但侧行链路的资源较为紧张，如何在侧行链路传输定位参考信号是亟待解决的技术问题。
发明内容
本申请实施例提供一种信号传输方法及装置，可以实现在侧行链路传输定位参考信号，从而提高侧行链路的资源利用率。
第一方面，本申请提供一种信号传输方法，该方法可包括：根据参考信号的传输资源信息，确定用于传输参考信号的候选资源集合；在资源感知窗内确定候选资源集合中未被占用的至少一个候选资源；在资源选择窗内在至少一个候选资源中的N个候选资源上发送参考信号；N为大于或等于1的正整数。
可见，通过在资源感知窗内确定的候选资源集合中未被占用的至少一个候选资源，以确定发送参考信号的候选资源，以实现参考信号的传输。参考信号可以是定位参考信号，从而实现在侧行链路上传输定位参考信号，从而提高侧行链路的资源利用率。
在一种可能的实现方式中，上述方法还包括：接收定位请求，该定位请求用于请求SL定位。该定位请求可来自于其他需要接收上述参考信号的终端设备。可见，通过接收定位请求，可以触发在资源感知窗内确定候选资源集合中未被占用的至少一个候选资源。
在一种可能的实现方式中，上述方法还包括：接收到定位请求后，在资源感知窗内对候选资源集合进行资源感知；在资源感知窗内确定候选资源集合中未被占用的至少一个候选资源，可包括：根据在资源感知窗内对候选资源集合的资源感知结果，确定候选资源集合中未被占用的至少一个候选资源。可见，接收到定位请求后，启动在资源感知窗内对候选资源集合进行资源感知，可以节省功耗。
在一种可能的实现方式中，上述方法还包括：接收到定位请求后，确定资源感知窗内 对候选资源集合的资源感知结果，资源感知窗位于定位请求的时域资源之前；在资源感知窗内确定候选资源集合中未被占用的至少一个候选资源，可包括：根据在资源感知窗内对候选资源集合的资源感知结果，确定候选资源集合中未被占用的至少一个候选资源。从而有助于提高确定候选资源集合中的未被占用的至少一个候选资源的可靠性，进一步提高参考信号发送成功的可能性。
在一种可能的实现方式中，上述参考信号的传输资源信息包括以下参考中的至少一项：参考信号资源周期、参考信号起始频域资源位置、参考信号资源起始时域资源位置、参考信号所占符号数、资源单元(resource element，RE)偏移、参考信号图样、参考信号子载波间隔、循环前缀(cyclic prefix，CP)类型、参考信号所占资源块(resource block，RB)数。可见，通过参考信号的传输资源信息所包括的参数，可以确定用于传输参考信号的候选资源集合。
在一种可能的实现方式中，上述方法还包括：发送侧行链路控制信息(side link control information，SCI)，该SCI包括上述参考信号的传输资源信息中的部分参数或全部参数。可见，通过SCI携带部分参数或全部参数，可实现动态调整参数，从而提高传输灵活性。
在一种可能的实现方式中，上述参考信号的传输资源信息是预配置的。
在一种可能的实现方式中，上述参考信号的传输资源信息中的参数是针对载波信道配置的；或者，
上述参考信号的传输资源信息中的参数是针对部分带宽BWP配置的；或者，
上述参考信号的传输资源信息中的参数是针对资源池配置的；或者，
上述参考信号的传输资源信息中的部分参数是针对载波信道配置的、部分参数是针对BWP配置的、和/或部分参数是针对资源池配置的。
第二方面，本申请提供一种信号传输方法，该方法可包括：根据参考信号的传输资源信息，确定可用于传输参考信号的候选资源集合；在候选资源集合所包括的全部候选资源上或部分候选资源上，接收参考信号。可见，在候选资源集合所包括的全部候选资源上或部分候选资源上，尝试接收参考信号，以减少错过参考信号的概率。
在一种可能的实现方式中，上述方法还包括：发送定位请求，定位请求用于请求侧行链路(side link)SL定位。可见，通过发送定位请求，可以触发SL定位。
在一种可能的实现方式中，上述参考信号的起始接收时域资源位置与定位请求的发送时域资源结束位置间隔第一时长，第一时长是预配置的。可见，通过第一时长可确定何时开始尝试接收上述参考信号。
在一种可能的实现方式中，上述参考信号的传输资源信息包括以下参数中的至少一项：参考信号资源周期，参考信号起始频域资源位置，参考信号起始时域资源位置，参考信号所占符号数，RE偏移，参考信号图样，参考信号子载波间隔，参考信号所占RB数，CP类型。可见，通过参考信号的传输资源信息所包括的参数，可以确定用于传输参考信号的候选资源集合。
在一种可能的实现方式中，上述参考信号的传输资源信息是预配置的。
在一种可能的实现方式中，上述参考信号的传输资源信息中的参数是针对载波信道配置的；或者，
上述参考信号的传输资源信息中的参数是针对BWP配置的；或者，
上述参考信号的传输资源信息中的参数是针对资源池配置的；或者，
上述参考信号的传输资源信息中的部分参数是针对载波信道配置的、部分参数是针对BWP配置的、和/或部分参数是针对资源池配置的。
在一种可能的实现方式中，上述方法还包括：接收SCI；根据该SCI，确定终端设备标识，所述终端设备标识用于标识所述参考信号的发送设备。可见，根据SCI，可获知上述参考信号来自于哪个终端设备。
在一种可能的实现方式中，上述SCI包括参考信号的传输资源信息中的部分参数或全部参数。可见，通过SCI携带部分参数或全部参数，可实现动态调整参数，从而提高传输灵活性。
第三方面，本申请提供一种通信装置，该装置包括通信单元和处理单元，其中，处理单元，用于根据参考信号的传输资源信息，确定用于传输参考信号的候选资源集合；在资源感知窗内确定候选资源集合中未被占用的至少一个候选资源；通信单元，用于在资源选择窗内在至少一个候选资源中的N个候选资源上发送参考信号；N为大于或等于1的正整数。
第四方面，本申请提供一种通信装置，该装置包括通信单元和处理单元，其中，处理单元，用于根据参考信号的传输资源信息，确定可用于传输参考信号的候选资源集合；通信单元，用于在候选资源集合所包括的全部候选资源上或部分候选资源上，接收参考信号。
第五方面，本申请提供一种通信装置，该装置包括处理器、存储器及存储在存储器上的计算机程序或指令，其特征在于，处理器执行计算机程序或指令以实现如第一方面及其任一种可能的实现方式中的方法，或实现如第二方面及其任一种可能的实现方式中的方法。
第六方面，本申请提供一种芯片。在一种实现方式中，该芯片用于根据参考信号的传输资源信息，确定用于传输参考信号的候选资源集合；在资源感知窗内确定候选资源集合中未被占用的至少一个候选资源；在资源选择窗内在至少一个候选资源中的N个候选资源上发送参考信号；N为大于或等于1的正整数。在另一种实现方式中，该芯片用于根据参考信号的传输资源信息，确定可用于传输参考信号的候选资源集合；在候选资源集合所包括的全部候选资源上或部分候选资源上，接收参考信号。
第七方面，本申请提供一种计算机可读存储介质，该计算机存储介质中存储有计算机可读指令，当该计算机可读指令在计算机上运行时，使得该通信装置执行上述第一方面及其任一种可能的实现方式中的方法，或执行上述第二方面及其任一种可能的实现方式中的方法。
第八方面，本申请提供一种计算机程序或计算机程序产品，包括代码或指令，当代码或指令在计算机上运行时，使得计算机执行如第一方面的及其任一种可能的实现方式中的方法，或执行如第二方面的及其任一种可能的实现方式中的方法。
第九方面，本申请提供一种模组设备，模组设备包括通信模组、电源模组、存储模组以及芯片模组，其中：所述电源模组用于为所述模组设备提供电能；所述存储模组用于存储数据和指令；所述通信模组用于进行模组设备内部通信，或者用于所述模组设备与外部设备进行通信；所述芯片模组用于执行如第一方面的及其任一种可能的实现方式中的方法， 或执行如第二方面的及其任一种可能的实现方式中的方法。
第十方面，本申请提供一种通信系统，该通信系统包括用于执行第一方面的及其任一种可能的实现方式中的方法的通信装置，以及用于执行第二方面的及其任一种可能的实现方式中的方法的通信装置。
附图说明
图1是应用本申请的一种通信系统的架构示意图；
图2是一个资源池的示意图；
图3是本申请提供的一种信号传输方法的流程示意图；
图4是本申请提供的一种确定未被占用的候选资源的示例图；
图5是本申请提供的另一种确定未被占用的候选资源的示例图；
图6是载波信道、BWP与资源池的关系示意图；
图7是本申请提供的另一种信号传输方法的流程示意图；
图8是本申请提供的又一种信号传输方法的流程示意图；
图9是本申请提供的一种通信装置的结构示意图；
图10是本申请提供的另一种通信装置的结构示意图；
图11是本申请实施例提供的一种芯片模组的结构示意图。
具体实施方式
在本申请中，“第一”、“第二”等字样用于对功能和作用基本相同的相同项或相似项进行区分。本领域技术人员可以理解“第一”、“第二”等字样并不对数量和执行次序进行限定，并且“第一”、“第二”等字样也并不限定一定不同。“和/或”，描述关联对象的关联关系，表示可以存在三种关系，例如，A和/或B，可以表示：单独存在A，同时存在A和B，单独存在B这三种情况。字符“/”一般表示前后关联对象是一种“或”的关系。
应当理解，本申请中，“至少一个”指的是一个或多个；“多个”是指两个或两个以上。此外，本申请的“等于”可以与“大于”连用，也可以与“小于”连用。在“等于”与“大于”连用的情况下，采用“大于”的技术方案；在“等于”与“小于”连用的情况下，采用“小于”的技术方案。
首先，对本申请涉及的系统架构进行阐述。
本申请可应用于第五代(5th generation，5G)系统，也可以称为新空口(new radio，NR)系统；或者可应用于第六代(6th generation，6G)系统，或者第七代(7th generation，7G)系统，或未来的其他通信系统；或者还可用于设备到设备(device to device，D2D)系统，机器到机器(machine to machine，M2M)系统、车联网(vehicle to everything，V2X)等等。
本申请可应用于图1所示的通信系统中。图1所示的通信系统可包括但不限于：终端设备101和终端设备102。可选的，图1所示的通信系统还可包括网络设备103。图1中设备的数量和形态用于举例，并不构成对本申请实施例的限定，例如实际应用中可以包括多个网络设备和/或更多的终端设备。
终端设备，又称之为用户设备(user equipment，UE)、移动台(mobile station，MS)、 移动终端(mobile terminal，MT)等，是指向用户提供语音和/或数据连通性的设备。例如，具有无线连接功能的手持式设备、车载设备等。目前，一些终端设备的举例为：手机(mobile phone)、平板电脑、笔记本电脑、掌上电脑、移动互联网设备(mobile internet device，MID)、可穿戴设备，虚拟现实(virtual reality，VR)设备、增强现实(augmented reality，AR)设备、工业控制(industrial control)中的无线终端、无人驾驶(self driving)中的无线终端、远程手术(remote medical surgery)中的无线终端、智能电网(smart grid)中的无线终端、运输安全(transportation safety)中的无线终端、智慧城市(smart city)中的无线终端、智慧家庭(smart home)中的无线终端等。
在本申请中，用于实现终端设备的功能的装置可以是终端设备；也可以是能够支持终端设备实现该功能的装置，例如芯片模组，该装置可以被安装在终端设备中或者和终端设备匹配使用。在本申请提供的技术方案中，以用于实现终端设备的功能的装置是终端设备为例，描述本申请提供的技术方案。
网络设备，也可以称为接入网设备，是指将终端设备接入到无线网络的无线接入网(radio access network，RAN)节点(或设备)，又可以称为基站。目前，一些RAN节点的举例为：继续演进的节点B(gNB)、传输接收点(transmission reception point，TRP)、演进型节点B(evolved Node B，eNB)、无线网络控制器(radio network controller，RNC)、节点B(Node B，NB)、基站控制器(base station controller，BSC)、基站收发台(base transceiver station，BTS)、家庭基站(例如，home evolved NodeB，或home Node B，HNB)、基带单元(base band unit，BBU)，或无线保真(wireless fidelity，Wifi)接入点(access point，AP)等。另外，在一种网络结构中，网络设备可以包括集中单元(centralized unit，CU)节点、或分布单元(distributed unit，DU)节点、或包括CU节点和DU节点的RAN设备。需要说明的是，集中单元节点、分布单元节点还可能采用其他名称，本申请并不限定。
在本申请中，终端设备101与终端设备102之间的通信接口可以称为PC5口或侧行链路(SL)口，即终端设备之间的通信接口可以称为PC5口或SL口。终端设备101与终端设备102之间的通信链路可以称为侧行链路(SL)，侧行链路也可以描述为边链路、直通链路、直接链路、直连链路、辅链路或PC5链路等。网络设备103与终端设备之间的通信接口可以称为Uu口，网络设备103和终端设备之间的通信链路称为Uu链路，Uu链路也可以描述为Uu口链路或主链路等。
在一种实现方式中，终端设备101和终端设备102均在网络设备103的覆盖范围内，进而终端设备101与终端设备102之间可直接通信，终端设备101与网络设备103可通信，终端设备102与网络设备103可通信。
在另一种实现方式中，终端设备101在网络设备103的覆盖范围内，终端设备102在网络设备103的覆盖范围外，进而终端设备101与终端设备102之间可直接通信，终端设备101与网络设备103可通信；或者，终端设备102在网络设备103的覆盖范围内，终端设备101在网络设备103的覆盖范围外，进而终端设备101与终端设备102之间可直接通信，终端设备102与网络设备103可通信。
在又一种实现方式中，终端设备101和终端设备102均在网络设备103的覆盖范围外，进而终端设备101与终端设备102之间可直接通信。
可以理解的是，本申请实施例描述的通信系统是为了更加清楚的说明本申请实施例的技术方案，并不构成对本申请实施例提供的技术方案的限定，本领域技术人员可知，随着系统架构的演变和新业务场景的出现，本申请实施例提供的技术方案对于类似的技术问题，同样适用。
其次，对本申请涉及的相关名称或术语进行阐述，以便于本领域技术人员理解。
一、SL资源分配方式：
SL资源分配方式可分为两种模式(mode)，分别为mode 1和mode 2。mode 1是基站调度的资源分配方式，即基站为终端设备分配SL资源。mode 2是终端设备自主选择SL资源的方式，例如从资源池中选择SL资源。
mode 2又分为四种子模式(submode)，分别为mode 2a，mode 2b，mode 2c和mode 2d。mode 2a是终端设备自主选择SL资源用于SL传输，mode 2a也可以描述为基于感知的资源选择模式；mode 2b是一个终端设备辅助其他终端设备选择用于传输的SL资源；mode 2c是通过基站的配置授权(configured grant)对SL传输进行配置；mode 2d是一个终端设备调度其他终端设备的SL传输。本申请涉及mode 2a，即本申请采用基于感知的资源选择模式。
基于感知的资源选择模式涉及资源池，资源池指的是预配置的一些时频资源，例如预配置的时域资源是子帧1，频域资源是20M带宽。
请参考图2所示的一个资源池的示意图。对该资源池而言，时域的粒度为时隙(slot)，频域的粒度为子信道(subchannel)。一个子信道可包括m个RB，m的具体数值可由高层配置，例如高层配置6个或12个RB等。终端设备在进行资源选择时，根据数据包的大小，确定需要n个子信道进行传输(n为大于或等于1的正整数)，进而传输资源为资源池中的某个slot中的连续的n个子信道。例如，图2中深灰色部分和浅灰色部分共同占用的传输资源可表示为n＝3的一个传输资源，每个传输资源上会同时传输物理侧行链路控制信道(physical side link control channel，PSCCH)和物理侧行链路共享信道(physical side link shared channel，PSSCH)，也就是说每次传输都会包括PSCCH和PSSCH，图2中浅灰色部分表示PSCCH，深灰色部分表示PSSCH。
二、参考信号：
在本申请中，参考信号用于描述终端设备之间发送的，用于实现SL定位的参考信号。参考信号也可以描述为定位参考信号、SL参考信号或SL定位参考信号等，本申请对参考信号的名称不作限定，后续不排除采用其他名称来描述终端设备之间发送的，用于实现SL定位的参考信号。参考信号的表现形式可以是SL-PRS或SLPRS或SPRS或SLSRS等，随着标准的演进，可能采用其他形式来表示参考信号。下文以参考信号的表现形式是SPRS为例。
其中，SL定位指的是基于SL口或SL发送的SPRS实现的定位，例如终端设备2向终端设备1发送SPRS，终端设备1可通过测量终端设备2发送的SPRS，以确定终端设备1和/或终端设备2的位置信息。SL定位也可以描述为SL口定位、边链路定位、辅链路定位、或直通链路定位等。
三、候选资源集合：
在本申请中，候选资源集合可以包括一个或多个候选资源，这一个或多个候选资源是为传输参考信号配置的。例如候选资源集合是为传输SPRS配置的一个或多个候选资源。候选资源例如时频资源等。
候选资源集合中的哪个或哪些候选资源可用于传输参考信号，哪个或哪些候选资源不能用于传输参考信号，可通过资源感知确定，例如在资源感知窗内对候选资源集合进行资源感知，以确定候选资源集合中可用于传输参考信号的候选资源，和/或，候选资源集合中不能用于传输参考信号的候选资源。
对候选资源集合进行资源感知可得到候选资源集合的资源感知结果，候选资源集合的资源感知结果可包括候选资源集合中可用于传输参考信号的候选资源，和/或，候选资源集合中不能用于传输参考信号的候选资源。在本申请中，将候选资源集合中可用于传输参考信号的候选资源称为候选资源集合中的未被占用的候选资源，将候选资源集合中不能用于传输参考信号的候选资源称为候选资源集合中的被占用的候选资源。需要说明的是，这两个名词用于举例，并不构成对本申请的限定。为了描述方便，下文将候选资源集合中的未被占用的候选资源简称为未被占用的候选资源，将候选资源集合中的被占用的候选资源简称为被占用的候选资源。
某个候选资源未被占用，指的是该候选资源未被其他终端设备占用，进而该候选资源可以被终端设备用来传输参考信号。未被其他终端设备占用可以理解为该候选资源未被其他终端设备用来传输定位参考信号，和/或，未被其他终端设备预留用来传输定位参考信号。例如，终端设备1在资源池1中，确定候选资源1和候选资源2为发送定位参考信号的候选资源，在资源感知窗1内候选资源1未被终端设备2用来发送定位参考信号，但被终端设备3预留占用，那么候选资源1不是未被占用的候选资源；在资源感知窗1内候选资源2未被终端设备2用来发送定位参考信号，也未被终端设备3预留用来发送定位参考信号，那么候选资源2是未被占用的候选资源。
某个候选资源被占用，指的是该候选资源被其他终端设备占用，进而该候选资源不能被终端设备用来传输参考信号。被其他终端设备占用可以理解为该候选资源被其他终端设备用来传输定位参考信号，和/或，被其他终端设备预留用来传输定位参考信号。例如，终端设备1在资源池1中，确定候选资源1和候选资源2为发送定位参考信号的候选资源，在资源感知窗1内候选资源1未被终端设备2用来发送定位参考信号，但被终端设备3预留占用，那么候选资源1是被占用的候选资源；在资源感知窗1内候选资源2被终端设备2用来发送定位参考信号，那么候选资源2是被占用的候选资源。
下面对本申请提供的信号传输方法进行阐述。信号传输方法可由终端设备执行，或由与终端设备匹配的装置执行，例如芯片、芯片模组或处理器等。本申请以终端设备执行信号传输方法为例进行阐述。
请参见图3，是本申请实施例提供的一种信号传输方法的流程示意图，可以包括但不限于如下步骤：
S301，终端设备根据参考信号的传输资源信息，确定用于传输参考信号的候选资源集合。
其中，参考信号的传输资源信息用于描述为传输参考信号配置的资源，例如时频资源等。参考信号的传输资源信息也可以描述为参考信号的资源配置信息，参考信号的传输配置信息，或参考信号的传输资源配置信息等。可选的，参考信号的传输资源信息不用于传输数据，例如不用于传输PSSCH。
可选的，参考信号的传输资源信息可以包括以下参数中的至少一项：
●参考信号资源周期，也可以描述参考信号的资源周期，或参考信号的传输周期等。在时域上，参考信号可以周期性传输。例如，参考信号资源周期为10ms。
●参考信号起始频域资源位置，用于描述参考信号的频域资源从哪里开始占用。例如，参考信号起始频域资源位置用于描述参考信号的起始资源块(resource block，RB)索引。
●参考信号起始时域资源位置，用于描述参考信号的时域资源从哪里开始占用。例如，参考信号起始时域资源位置用于描述参考信号的起始时隙和/或起始符号。
●参考信号所占符号数，用于描述参考信号在时域上占用几个符号。例如，参考信号所占符号数可用于描述参考信号连续占用的符号数。
●参考信号所占RB数，用于描述参考信号在频域上占用几个RB。例如，参考信号所占RB数可用于描述参考信号连续占用的RB数。
●RE偏移，用于描述相对前一个参考信号偏移的RE量，即偏移几个RE。
●参考信号资源图样。
●参考信号子载波间隔(subcarrier spacing，SCS)，用于描述参考信号的子载波间隔。子载波间隔例如可以是15kHz、30kHz、60kHz、120kHz、或240kHz等。
●循环前缀CP类型。CP类型可以分为常规循环前缀(normal cyclic prefix)和扩展循环前缀(extended cyclic prefix)。
需要说明的是，上述参数用于举例，并不构成对本申请的限定。
进一步的，终端设备通过参考信号的传输资源信息所包括的参数，可确定用于传输参考信号的候选资源集合。候选资源集合可以包括一个或多个候选资源，候选资源的具体数量与参考信号的传输资源信息有关。
S302，终端设备在资源感知窗内确定候选资源集合中未被占用的至少一个候选资源。
可选的，终端设备根据资源感知窗内对候选资源集合的资源感知结果，确定候选资源集合中未被占用的至少一个候选资源。某个候选资源未被占用指的是该候选资源未被其他终端设备占用，未被其他终端设备占用可以理解为该候选资源没有被其他终端用来发送定位参考信号，和/或，未被其他终端设备预留用来发送定位参考信号。例如，终端设备1根据参考信号的传输资源信息在资源池中确定候选资源1和候选资源2为发送定位参考信号的候选资源，终端设备1根据资源感知结果确定候选资源1未被终端设备2用来发送定位参考信号，但被终端设备3预留占用，那么候选资源1不是未被占用的候选资源；候选资源2未被终端设备2用来发送定位参考信号，也未被终端设备3预留用来发送定位参考信号，那么候选资源2是未被占用的候选资源。
S303，终端设备在资源选择窗内在至少一个候选资源中的N个候选资源上发送参考信号。
其中，N为大于或等于1的正整数，N的取值可以与至少一个候选资源的数量相同， 也可以小于至少一个候选资源的数量。例如，至少一个候选资源的数量为3个，那么N的取值可以是1或2或3。可以理解的是，用于发送参考信号的候选资源的数量小于或等于上述至少一个候选资源的数量。
在时域上，资源感知窗早于资源选择窗。在本申请中，资源感知窗的大小和资源选择窗的大小可以是单独预配置的或预设的，也可以沿用SL数据传输对应的资源感知窗和资源选择窗的大小的取值。
可选的，终端设备还可以接收定位请求，定位请求用于请求SL定位，也可以理解为用于触发资源选择。定位请求可以是其他终端设备发送的，例如终端设备1接收来自终端设备2的定位请求。终端设备接收定位请求可以在步骤S302之前执行，或在步骤S303之前执行，具体在哪个步骤之前执行在本申请不作限定。
下面分两种机制对终端设备发送参考信号进行阐述。
机制1：终端设备周期性对候选资源集合进行资源感知，其中，在一个周期内，终端设备在该周期的资源感知窗内对候选资源集合进行感知。若终端设备接收到定位请求，则终端设备根据位于定位请求的时域资源之前的一个资源感知窗内对候选资源集合的资源感知结果，确定候选资源集合中未被占用的至少一个候选资源，在资源选择窗内在至少一个候选资源中的N个候选资源上发送参考信号。
示例的，终端设备根据位于定位请求的时域资源之前，且距离定位请求的时域资源最近的一个资源感知窗内的资源感知结果，确定候选资源集合中未被占用的至少一个候选资源。从而有助于提高确定候选资源集合中的未被占用的至少一个候选资源的可靠性，进一步提高参考信号发送成功的可能性。
其中，定位请求的时域资源例如可以是定位请求占用的时隙或符号等。在本申请中，定位请求的时域资源以定位请求占用的时隙为例，例如定位请求对应的时隙索引为n。位于定位请求的时域资源之前的资源感知窗，也可以理解为资源感知窗的时隙位于定位请求占用的时隙之前，或资源感知窗对应的时隙索引小于定位请求对应的时隙索引，例如资源感知窗对应的最大时隙索引小于或等于定位请求对应的时隙索引。
举例来说，如图4所示的确定未被占用的候选资源的示例图。图4中，候选资源集合包括候选资源1(图4中的第一行资源)和候选资源2(图4中的第二行资源)，定位请求对应的时隙索引为n，终端设备根据位于时隙索引n之前的资源感知窗内对候选资源集合的资源感知结果(如候选资源1未被占用，候选资源2被占用)，确定候选资源集合中未被占用的候选资源1，进而终端设备在位于时隙索引n之后的资源选择窗中，选择使用候选资源1发送参考信号。需要说明的是，被占用的候选资源2不用于发送参考信号。若候选资源集合中所有候选资源均被占用，那么终端设备可不发送参考信号。
可选的，资源感知窗，时隙索引n以及资源选择窗在时域上的关系可以是与配置的或预设的。
机制2：终端设备在接收到定位请求后，启动或触发对候选资源集合的资源感知，即在资源感知窗内对候选资源集合进行资源感知；根据资源感知结果，确定资源感知窗内对候选资源集合的资源感知结果，并根据该资源感知结果，确定候选资源集合中未被占用的至少一个候选资源，在资源选择窗内在至少一个候选资源中的N个候选资源上发送参考信 号。从而在有助于节省终端设备的功耗。
终端设备在接收到定位请求之前，未对候选资源集合进行资源感知，而是在接收到定位请求后，在资源感知窗内对候选资源集合进行资源感知。资源感知窗P的大小(例如P个时隙)可以是预配置的，或者资源感知窗P与定位请求的时域资源之间的关系是预配置的。
示例1，候选资源集合包括候选资源1和候选资源2，定位请求对应的时隙索引为n，终端设备在时隙索引为n的时隙上启动资源感知窗，资源感知窗的大小例如为预配置的P个时隙，根据资源感知窗内对候选资源集合的资源感知结果(如候选资源1未被占用，候选资源2被占用)，确定候选资源集合中未被占用的候选资源1，进而终端设备在时隙索引为n+P(或n+P+k，k例如为预配置的资源感知窗与资源选择窗之间的时隙间隔)的时隙上启动资源选择窗，资源选择窗的大小例如为预配置的Q个时隙，并在资源选择窗内选择使用候选资源1发送参考信号。需要说明的是，被占用的候选资源2不用于发送参考信号。若候选资源集合中所有候选资源均被占用，那么终端设备可不发送参考信号。
示例2，如图5所示的确定未被占用的候选资源的示例图。图5中，候选资源集合包括候选资源1(图5中的第一行资源)和候选资源2(图5中的第二行资源)，定位请求对应的时隙索引为n，终端设备在时隙索引为n+k1(k1例如为预配置的k1个时隙)的时隙上启动资源感知窗，资源感知窗的大小例如为预配置的P个时隙，根据资源感知窗内对候选资源集合的资源感知结果(如候选资源1未被占用，候选资源2被占用)，确定候选资源集合中未被占用的候选资源1，进而终端设备在时隙索引为n+P+k1+k2(或n+P+k2)(k2例如为预配置的资源感知窗与资源选择窗之间的时隙间隔)的时隙上启动资源选择窗，资源选择窗的大小例如为预配置的Q个时隙，并在资源选择窗内选择使用候选资源1发送参考信号。需要说明的是，被占用的候选资源2不用于发送参考信号。若候选资源集合中所有候选资源均被占用，那么终端设备可不发送参考信号。
在图3所示的实施例中，通过在资源感知窗内确定的候选资源集合中未被占用的至少一个候选资源，以确定发送参考信号的候选资源，以实现参考信号的传输。参考信号可以是侧行链路参考信号，从而实现侧行链路参考信号的传输，从而提高侧行链路的资源利用率。
在一些实施例中，参考信号的传输资源信息是预配置的。预配置的，可以理解为终端设备自己配置的，例如终端设备的高层向终端设备的底层配置参考信号的传输资源信息。预配置的参考信号的传输资源信息可以是一套或多套，每套参考信号的传输资源信息可以包括上述至少一项参数。通过预配置参考信号的传输资源信息，以便终端设备确定用于传输参考信号的候选资源集合，从而实现侧行链路参考信号的传输。
在一种实现方式中，参考信号的传输资源信息中的参数是针对载波信道配置的，例如是针对SL载波信道配置的。举例来说，参考信号的传输资源信息中的所有参数均是针对载波信道1配置的，那么所有参数适用于整个载波信道1，即载波信道1上的参考信号传输对应的参数均相同。
在另一种实现方式中，参考信号的传输资源信息中的参数是针对BWP配置的，例如是针对SL BWP配置的。举例来说，参考信号的传输资源信息中的所有参数均是针对BWP1 配置的，那么所有参数适用于整个BWP1，即BWP1上的参考信号传输对应的参数均相同。
在又一种实现方式中，参考信号的传输资源信息中的参数是针对资源池配置的。举例来说，参考信号的传输资源信息中的所有参数均是针对资源池1配置的，那么所有参数适用于整个资源池1，即资源池1上的参考信号传输对应的参数均相同。
在又一种实现方式中，参考信号的传输资源中的部分参数是针对载波信道配置的、部分参数是针对BWP配置的、和/或部分参数是针对资源池配置的。也可以描述为参考信号的传输资源信息中的参数满足以下至少一个条件：部分参数是针对载波信道配置的，部分参数是针对BWP配置的，部分参数是针对资源池配置的。其中，部分参数也可以描述为至少一个参数或K个参数，K为大于或等于1的正整数。
举例来说，参考信号图样、参考信号子载波间隔以及参考信号所占RB数是针对载波信道1配置的，那么载波信道1上的参考信号传输对应的参考信号图样、参考信号子载波间隔以及参考信号所占RB数均相同；参考信号起始时域资源位置、参考信号所占符号数以及RE偏移是针对BWP1配置的，那么BWP1上的参考信号传输对应的参考信号起始时域资源位置、参考信号所占符号数以及RE偏移均相同；剩余参数是针对资源池1配置的，那么资源池1上的参考信号传输对应的剩余参数均相同。
进一步的，终端设备根据参考信号传输所在的载波信道、BWP和资源池中的至少一项，可以快速确定出参考信号的传输资源信息，进而确定用于传输参考信号的候选资源集合，从而实现侧行链路参考信号的传输。可以理解的是，终端设备根据预配置的载波信道、BWP和资源池中的至少一项，确定出参考信号的传输资源信息。
可以理解的是，参考信号的传输资源中的参数可划分为载波信道级别的，BWP级别的，以及资源池级别的。可以将所有参数均划为一个级别，也可以将不同的参数划为不同的级别。
载波信道，BWP与资源池之间的关系可参见图6所示，载波信道的范围大于BWP的范围，BWP的范围大于资源池的范围。例如，载波信道1的带宽为20M，BWP1的带宽为10M，资源池的带宽为4M。
在一些实施例中，参考信号的传输资源信息中部分参数是预配置的，另一部分参数可通过SCI携带。例如，终端设备不仅在N个候选资源上发送参考信号，还发送SCI，SCI包括参考信号的传输资源信息中的部分参数或全部参数。举例来说，SCI包括参考信号起始时域资源位置、参考信号所占符号数、RE偏移、参考信号图样中的一项或多项。
一个参考信号传输资源传输块，可以传输一个或多个参考信号的传输资源，不同的参考信号可以占用不同的符号，不同的RE，或者不同的参考信号图样。发送参考信号的终端设备需要在SCI中指示对于不同的参数，例如参考信号起始时域资源位置、参考信号所占符号数、RE偏移、参考信号图样中的一项或多项。对于不同的参考信号占用的参数有所不同，通过SCI指示不同的参数，可以实现动态调整，从而提高传输灵活性。
可选的，终端设备发送参考信号的时隙与发送SCI的时隙是同一时隙或不同的时隙，即参考信号与SCI可以位于同一时隙或不同的时隙。参考信号与SCI位于同一时隙，有助于接收参考信号的终端设备快速解码SCI。参考信号与SCI位于不同时隙，有助于提高传输的可靠性。
请参见图7，是本申请实施例提供的另一种信号传输方法的流程示意图，可以包括但不限于如下步骤：
S701，终端设备根据参考信号的传输资源信息，确定用于传输参考信号的候选资源集合。
步骤S701的实现过程可参见步骤S301的具体描述，在此不再赘述。
S702，终端设备在候选资源集合所包括的全部候选资源上或部分候选资源上，接收参考信号。
可选的，终端设备还可以发送定位请求，定位请求用于请求SL定位，也可以理解为用于触发接收定位请求的总的设备进行资源选择。定位请求可以是向其他终端设备发送的，例如终端设备2向终端设备1发送定位请求。终端设备发送定位请求可以在步骤S702之前执行。
在一种实现方式中，终端设备在发送定位请求后，立即在候选资源集合所包括的全部候选资源上或部分候选资源上，尝试接收参考信号。从而可减少错过参考信号的概率。
在另一种实现方式中，终端设备在发送定位请求后，推迟或间隔第一时长，在候选资源集合所包括的全部候选资源上或部分候选资源上，尝试接收参考信号。从而有助于节省功耗。可以理解的是，参考信号的起始接收时域资源位置与定位请求的发送时域资源结束位置间隔第一时长。其中，第一时长是预配置的，第一时长的单位可以是符号，例如第一时长可以为X个符号；或者，第一时长的单位可以是时隙，例如第一时长可以为X个时隙；或者，第一时长的单位可以是毫秒(ms)或微秒(us)等。其中，X的取值可以是0，也可以是大于或等于1的正整数。可选的，第一时长的大小与预配置的资源感知窗的大小相同。X的取值为零时，表示终端设备在发送定位请求后，立即在候选资源集合所包括的全部候选资源上或部分候选资源上，尝试接收参考信号。
可选的，终端设备在接收参考信号之前，接收SCI，并根据SCI确定终端设备标识。其中，终端设备标识用于标识参考信号的发送设备，即发送参考信号的终端设备。根据SCI确定终端设备标识，例如解码SCI以确定终端设备标识。解码SCI包括解码一阶SCI和/或二阶SCI。通过解码SCI，终端设备可以确定参考信号来自于哪个终端设备。终端设备标识可以包括但不限于无线网络临时标识符(radio network tempory identity，RNTI)、国际移动用户识别码(International Mobile Subscriber Identification Number，IMSI)、国际移动设备识别码(International Mobile Equipment Identity，IMEI)等。
进一步的，SCI可包括参考信号的传输资源信息中的部分参数或全部参数。举例来说，SCI包括参考信号起始时域资源位置、参考信号所占符号数、RE偏移、参考信号图样中的一项或多项。SCI携带参考信号的传输资源信息中的部分参数或全部参数，可以实现动态调整，从而提高传输灵活性。
在图7所示的实施例中，在候选资源集合所包括的全部候选资源上或部分候选资源上，尝试接收参考信号，以减少错过参考信号的概率。
需要说明的是，图3所示实施例中的终端设备用于发送参考信号，图7所示实施例中的终端设备用于接收参考信号，两者可以是同一终端设备，即既可以实现参考信号的发送， 也可以实现参考信号的接收；或者，两者为不同的终端设备，一个用于实现参考信号的发送，另一个用于实现参考信号的接收。
请参见图8，是本申请实施例提供的又一种信号传输方法的流程示意图，可以包括但不限于如下步骤：
S801，第一终端设备根据参考信号的传输资源信息，确定用于传输参考信号的候选资源集合。
S802，第二终端设备根据参考信号的传输资源信息，确定用于传输参考信号的候选资源集合。
本申请不限定步骤S801与步骤S802执行的先后顺序。
S803，第一终端设备在资源感知窗内确定候选资源集合中未被占用的至少一个候选资源。
S804，第一终端设备在资源选择窗内在至少一个候选资源中的N个候选资源上向第二终端设备发送参考信号。相应的，第二终端设备在候选资源集合所包括的全部候选资源上或部分候选资源上，接收参考信号。
为了便于区分，图8所示的实施例将发送参考信号的终端设备称为第一终端设备，将接收参考信号的终端设备称为第二终端设备。第一终端设备也可以描述为发送设备、发送端、发送终端、第一设备或第一终端等，相应的，第二终端设备也可以描述为接收设备、接收端、接收终端、第二设备或第二终端等。
可选的，图8所示的实施例还包括步骤S800，第二终端设备向第一终端设备发送定位请求。相应的，第一终端设备接收来自第二终端设备的定位请求。步骤S800可以在步骤S802之后执行，不限定步骤S800在步骤S802之前执行还是在步骤S804之前执行。
图8从交互的角度对信号传输方法进行阐述，与图3所示实施例相同或类似的部分可参考图3的描述，与图7所示实施例相同或类似的部分可参考图7的描述。
请参见图9，图9是本申请实施例提供的一种通信装置的结构示意图。该通信装置90可以是终端设备，也可以是与终端设备匹配的装置。如图9所示，该通信装置90包括处理单元901和通信单元902。
在一种实现方式中，处理单元901，用于根据参考信号的传输资源信息，确定用于传输参考信号的候选资源集合；在资源感知窗内确定候选资源集合中未被占用的至少一个候选资源；
通信单元902，用于在资源选择窗内在至少一个候选资源中的N个候选资源上发送参考信号，N为大于或等于1的正整数。
可选的，通信单元902，还用于接收定位请求，定位请求用于请求侧行链路SL定位。
可选的，处理单元901，还用于在通信单元902接收到定位请求后，在资源感知窗内对候选资源集合进行资源感知；
处理单元901，具体用于根据在资源感知窗内对候选资源集合的资源感知结果，确定候选资源集合中未被占用的至少一个候选资源。
可选的，通信单元902，还用于接收到定位请求后，确定资源感知窗内对候选资源集合的资源感知结果，资源感知窗位于定位请求的时域资源之前；
处理单元901，具体用于根据在资源感知窗内对候选资源集合的资源感知结果，确定候选资源集合中未被占用的至少一个候选资源。
可选的，参考信号的传输资源信息包括以下参数中的至少一项：
参考信号资源周期、参考信号起始频域资源位置、参考信号资源起始时域资源位置、参考信号所占符号数、RE偏移、参考信号图样、参考信号子载波间隔、CP类型、参考信号所占RB数。
可选的，通信单元902，还用于发送SCI，SCI包括参考信号的传输资源信息中的部分参数或全部参数。
可选的，参考信号的传输资源信息是预配置的。
可选的，参考信号的传输资源信息中的参数是针对载波信道配置的；或者，
参考信号的传输资源信息中的参数是针对部分带宽BWP配置的；或者，
参考信号的传输资源信息中的参数是针对资源池配置的；或者，
参考信号的传输资源信息中的部分参数是针对载波信道配置的、部分参数是针对BWP配置的、和/或部分参数是针对资源池配置的。
在另一种实现方式中，处理单元901，用于根据参考信号的传输资源信息，确定可用于传输参考信号的候选资源集合；
通信单元902，用于在候选资源集合所包括的全部候选资源上或部分候选资源上，接收参考信号。
可选的，通信单元902，还用于发送定位请求，定位请求用于请求SL定位。
可选的，参考信号的起始接收时域资源位置与定位请求的发送时域资源结束位置间隔第一时长，第一时长是预配置的。
可选的，参考信号的传输资源信息包括以下参数中的至少一项：参考信号资源周期，参考信号起始频域资源位置，参考信号起始时域资源位置，参考信号所占符号数，RE偏移，参考信号图样，参考信号子载波间隔，参考信号所占RB数，CP类型。
可选的，参考信号的传输资源信息是预配置的。
可选的，参考信号的传输资源信息中的参数是针对载波信道配置的；或者，
参考信号的传输资源信息中的参数是针对BWP配置的；或者，
参考信号的传输资源信息中的参数是针对资源池配置的；或者，
参考信号的传输资源信息中的部分参数是针对载波信道配置的、部分参数是针对BWP配置的、和/或部分参数是针对资源池配置的。
可选的，通信单元902，还用于接收SCI；处理单元901，还用于根据SCI，确定终端设备标识，终端设备标识用于标识参考信号的发送设备。
可选的，SCI包括参考信号的传输资源信息中的部分参数或全部参数。
请参见图10，图10是本申请实施例提供的另一种通信装置的结构示意图。该通信装置100可以是终端设备，也可以是与终端设备匹配的装置。可选的，该通信装置还可以包 括存储器1003。其中，收发器1001、处理器1002、存储器1003可以通过总线1004或其他方式连接。总线在图10中以粗线表示，其它部件之间的连接方式，仅是进行示意性说明，并不引以为限。总线可以分为地址总线、数据总线、控制总线等。为便于表示，图10中仅用一条粗线表示，但并不表示仅有一根总线或一种类型的总线。
本申请实施例中的耦合是装置、单元或模块之间的间接耦合或通信连接，可以是电性，机械或其它的形式，用于装置、单元或模块之间的信息交互。本申请实施例中不限定上述收发器1001、处理器1002、存储器1003之间的具体连接介质。
存储器1003可以包括只读存储器和随机存取存储器，并向处理器1002提供指令和数据。存储器1003的一部分还可以包括非易失性随机存取存储器。
处理器1002可以是中央处理单元(Central Processing Unit，CPU)，该处理器1002还可以是其他通用处理器、数字信号处理器(Digital Signal Processor，DSP)、专用集成电路(Application Specific Integrated Circuit，ASIC)、现场可编程门阵列(Field-Programmable Gate Array，FPGA)或者其他可编程逻辑器件、分立门或者晶体管逻辑器件、分立硬件组件等。通用处理器可以是微处理器，可选的，该处理器1002也可以是任何常规的处理器等。
在一种可选的实施方式中，存储器1003，用于存储程序指令；处理器1002，用于调用存储器1003中存储的程序指令，以用于执行图3或图7对应实施例中终端设备所执行的步骤。
在本申请实施例中，可以通过在包括CPU、随机存取存储介质(Random Access Memory，RAM)、只读存储介质(Read-Only Memory，ROM)等处理元件和存储元件的例如计算机的通用计算装置上运行能够执行上述方法所涉及的各步骤的计算机程序(包括程序代码)，以及来实现本申请实施例所提供的方法。计算机程序可以记载于例如计算机可读记录介质上，并通过计算机可读记录介质装载于上述计算装置中，并在其中运行。
基于同一发明构思，本申请实施例中提供的通信装置100解决问题的原理与有益效果与本申请图3或图7所示实施例中解决问题的原理和有益效果相似，可以参见方法的实施的原理和有益效果，为简洁描述，在这里不再赘述。
前述通信装置，例如可以是：芯片、或者芯片模组。
本申请实施例还提供一种芯片，该芯片包括处理器，处理器可以执行前述方法实施例中终端设备的相关步骤。
在一种实现方式中，该芯片用于：根据参考信号的传输资源信息，确定用于传输参考信号的候选资源集合；在资源感知窗内确定候选资源集合中未被占用的至少一个候选资源；在资源选择窗内在至少一个候选资源中的N个候选资源上发送参考信号；N为大于或等于1的正整数。
在另一种实现方式中，该芯片用于：根据参考信号的传输资源信息，确定可用于传输参考信号的候选资源集合；在候选资源集合所包括的全部候选资源上或部分候选资源上，接收参考信号。
请参阅图11，图11是本申请实施例提供的一种芯片模组的结构示意图。该芯片模组 110可以执行前述方法实施例中终端设备的相关步骤，该芯片模组110包括：通信接口1101和芯片1102。
其中，通信接口用于进行芯片模组内部通信，或者用于该芯片模组与外部设备进行通信；该芯片用于实现本申请实施例中终端设备的功能。
例如，芯片1102，用于根据参考信号的传输资源信息，确定用于传输参考信号的候选资源集合；在资源感知窗内确定候选资源集合中未被占用的至少一个候选资源；通信接口1101，在资源选择窗内在至少一个候选资源中的N个候选资源上发送参考信号；N为大于或等于1的正整数。
再例如，芯片1102，用于根据参考信号的传输资源信息，确定可用于传输参考信号的候选资源集合；通信接口1101，在候选资源集合所包括的全部候选资源上或部分候选资源上，接收参考信号。
可选的，芯片模组110还可以包括存储模组1103、电源模组1104。存储模组1103用于存储数据和指令。电源模组1104用于为芯片模组提供电能。
对于应用于或集成于芯片模组的各个装置、产品，其包含的各个模块可以都采用电路等硬件的方式实现，不同的模块可以位于芯片模组的同一组件(例如芯片、电路模块等)或者不同组件中，或者，至少部分模块可以采用软件程序的方式实现，该软件程序运行于芯片模组内部集成的处理器，剩余的(如果有)部分模块可以采用电路等硬件方式实现。
本申请实施例还提供一种计算机可读存储介质，计算机可读存储介质中存储有一条或多条指令，一条或多条指令适于由处理器加载并执行上述方法实施例所提供的方法。
本申请实施例还提供一种包含计算机程序或指令的计算机程序产品，当计算机程序或指令在计算机上运行时，使得计算机执行上述方法实施例所提供的方法。
需要说明的是，对于上述的各个实施例，为了简单描述，将其都表述为一系列的动作组合。本领域技术人员应该知悉，本申请不受所描述的动作顺序的限制，因为本申请实施例中的某些步骤可以采用其他顺序或者同时进行。另外，本领域技术人员也应该知悉，说明书中所描述的实施例均属于优选实施例，所涉及的动作、步骤、模块或单元等并不一定是本申请实施例所必须的。
在上述实施例中，本申请实施例对各个实施例的描述都各有侧重，某个实施例中没有详述的部分，可以参见其他实施例的相关描述。
本申请实施例所描述的方法或者算法的步骤可以以硬件的方式来实现，也可以是由处理器执行软件指令的方式来实现。软件指令可以由相应的软件模块组成，软件模块可以被存放于RAM、闪存、ROM、可擦除可编程只读存储器(erasable programmable ROM，EPROM)、电可擦可编程只读存储器(electrically EPROM，EEPROM)、寄存器、硬盘、移动硬盘、只读光盘(CD-ROM)或者本领域熟知的任何其它形式的存储介质中。一种示例性的存储介质耦合至处理器，从而使处理器能够从该存储介质读取信息，且可向该存储介质写入信息。当然，存储介质也可以是处理器的组成部分。处理器和存储介质可以位于ASIC中。另外，该ASIC可以位于终端设备或管理设备中。当然，处理器和存储介质也可以作为分立组件存在于终端设备或管理设备中。
本领域技术人员应该可以意识到，在上述一个或多个示例中，本申请实施例所描述的 功能可以全部或部分地通过软件、硬件、固件或者其任意组合来实现。当使用软件实现时，可以全部或部分地以计算机程序产品的形式实现。该计算机程序产品包括一个或多个计算机指令。在计算机上加载和执行该计算机程序指令时，全部或部分地产生按照本申请实施例所述的流程或功能。该计算机可以是通用计算机、专用计算机、计算机网络、或者其他可编程装置。该计算机指令可以存储在计算机可读存储介质中，或者从一个计算机可读存储介质向另一个计算机可读存储介质传输。例如，该计算机指令可以从一个网站站点、计算机、服务器或数据中心通过有线(例如同轴电缆、光纤、数字用户线(digital subscriber line，DSL))或无线(例如红外、无线、微波等)方式向另一个网站站点、计算机、服务器或数据中心进行传输。该计算机可读存储介质可以是计算机能够存取的任何可用介质或者是包含一个或多个可用介质集成的服务器、数据中心等数据存储设备。该可用介质可以是磁性介质(例如，软盘、硬盘、磁带)、光介质(例如，数字视频光盘(digital video disc，DVD))、或者半导体介质(例如，固态硬盘(solid state disk，SSD))等。
关于上述实施例中描述的各个装置、产品包含的各个模块/单元，其可以是软件模块/单元，也可以是硬件模块/单元，或者也可以部分是软件模块/单元，部分是硬件模块/单元。例如，对于应用于或集成于芯片的各个装置、产品，其包含的各个模块/单元可以都采用电路等硬件的方式实现，或者，至少部分模块/单元可以采用软件程序的方式实现，该软件程序运行于芯片内部集成的处理器，剩余的(如果有)部分模块/单元可以采用电路等硬件方式实现；对于应用于或集成于芯片模组的各个装置、产品，其包含的各个模块/单元可以都采用电路等硬件的方式实现，不同的模块/单元可以位于芯片模组的同一组件(例如芯片、电路模块等)或者不同组件中，或者，至少部分模块/单元可以采用软件程序的方式实现，该软件程序运行于芯片模组内部集成的处理器，剩余的(如果有)部分模块/单元可以采用电路等硬件方式实现；对于应用于或集成于终端的各个装置、产品，其包含的各个模块/单元可以都采用电路等硬件的方式实现，不同的模块/单元可以位于终端内同一组件(例如，芯片、电路模块等)或者不同组件中，或者，至少部分模块/单元可以采用软件程序的方式实现，该软件程序运行于终端内部集成的处理器，剩余的(如果有)部分模块/单元可以采用电路等硬件方式实现。
以上所述的具体实施方式，对本申请实施例的目的、技术方案和有益效果进行了进一步详细说明，所应理解的是，以上所述仅为本申请实施例的具体实施方式而已，并不用于限定本申请实施例的保护范围，凡在本申请实施例的技术方案的基础之上，所做的任何修改、等同替换、改进等，均应包括在本申请实施例的保护范围之内。

Claims (20)

  1. 一种信号传输方法，其特征在于，所述方法包括：
    根据参考信号的传输资源信息，确定用于传输所述参考信号的候选资源集合；
    在资源感知窗内确定所述候选资源集合中未被占用的至少一个候选资源；
    在所述资源选择窗内在所述至少一个候选资源中的N个候选资源上发送所述参考信号，所述N为大于或等于1的正整数。
  2. 根据权利要求1所述的方法，其特征在于，所述方法还包括：
    接收定位请求，所述定位请求用于请求侧行链路SL定位。
  3. 根据权利要求2所述的方法，其特征在于，所述方法还包括：
    接收到所述定位请求后，在资源感知窗内对所述候选资源集合进行资源感知；
    所述在资源感知窗内确定所述候选资源集合中未被占用的至少一个候选资源，包括：
    根据在所述资源感知窗内对所述候选资源集合的资源感知结果，确定所述候选资源集合中未被占用的至少一个候选资源。
  4. 根据权利要求2所述的方法，其特征在于，所述方法还包括：
    接收到所述定位请求后，确定所述资源感知窗内对所述候选资源集合的资源感知结果，所述资源感知窗位于所述定位请求的时域资源之前；
    所述在资源感知窗内确定所述候选资源集合中未被占用的至少一个候选资源，包括：
    根据在所述资源感知窗内对所述候选资源集合的资源感知结果，确定所述候选资源集合中未被占用的至少一个候选资源。
  5. 根据权利要求1所述的方法，其特征在于，所述参考信号的传输资源信息包括以下参数中的至少一项：
    参考信号资源周期、参考信号起始频域资源位置、参考信号资源起始时域资源位置、参考信号所占符号数、资源单元RE偏移、参考信号图样、参考信号子载波间隔、循环前缀CP类型、参考信号所占资源块RB数。
  6. 根据权利要求5所述的方法，其特征在于，所述方法还包括：
    发送侧行链路控制信息SCI，所述SCI包括所述参考信号的传输资源信息中的部分参数或全部参数。
  7. 根据权利要求5所述的方法，其特征在于，所述参考信号的传输资源信息是预配置的。
  8. 根据权利要求5-7任一所述的方法，其特征在于，所述参考信号的传输资源信息中 的参数是针对载波信道配置的；或者，
    所述参考信号的传输资源信息中的参数是针对部分带宽BWP配置的；或者，
    所述参考信号的传输资源信息中的参数是针对资源池配置的；或者，
    所述参考信号的传输资源信息中的部分参数是针对载波信道配置的、部分参数是针对BWP配置的、和/或部分参数是针对资源池配置的。
  9. 一种信号传输方法，其特征在于，所述方法包括：
    根据参考信号的传输资源信息，确定可用于传输所述参考信号的候选资源集合；
    在所述候选资源集合所包括的全部候选资源上或部分候选资源上，接收所述参考信号。
  10. 根据权利要求9所述的方法，其特征在于，所述方法还包括：
    发送定位请求，所述定位请求用于请求SL定位。
  11. 根据权利要求10所述的方法，其特征在于，所述参考信号的起始接收时域资源位置与所述定位请求的发送时域资源结束位置间隔第一时长，所述第一时长是预配置的。
  12. 根据权利要求9所述的方法，其特征在于，所述参考信号的传输资源信息包括以下参数中的至少一项：参考信号资源周期，参考信号起始频域资源位置，参考信号起始时域资源位置，参考信号所占符号数，RE偏移，参考信号图样，参考信号子载波间隔，参考信号所占RB数，CP类型。
  13. 根据权利要求12所述的方法，其特征在于，所述参考信号的传输资源信息是预配置的。
  14. 根据权利要求12或13所述的方法，其特征在于，所述参考信号的传输资源信息中的参数是针对载波信道配置的；或者，
    所述参考信号的传输资源信息中的参数是针对BWP配置的；或者，
    所述参考信号的传输资源信息中的参数是针对资源池配置的；或者，
    所述参考信号的传输资源信息中的部分参数是针对载波信道配置的、部分参数是针对BWP配置的、和/或部分参数是针对资源池配置的。
  15. 根据权利要求12所述的方法，其特征在于，所述方法还包括：
    接收SCI；
    根据所述SCI，确定终端设备标识，所述终端设备标识用于标识所述参考信号的发送设备。
  16. 根据权利要求15所述的方法，其特征在于，所述SCI包括所述参考信号的传输资源信息中的部分参数或全部参数。
  17. 一种通信装置，包括处理器、存储器及存储在所述存储器上的计算机程序或指令，其特征在于，所述处理器执行所述计算机程序或指令以实现权利要求1-8中任一项所述方法的步骤；或实现权利要求9-16中任一项所述方法的步骤。
  18. 一种芯片，包括处理器，其特征在于，所述处理器执行权利要求1-8中任一项所述方法的步骤；或执行权利要求9-16中任一项所述方法的步骤。
  19. 一种模组设备，其特征在于，所述模组设备包括通信模组、电源模组、存储模组以及芯片模组，其中：所述电源模组用于为所述模组设备提供电能；所述存储模组用于存储数据和指令；所述通信模组用于进行模组设备内部通信，或者用于所述模组设备与外部设备进行通信；所述芯片模组用于执行权利要求1-8中任一项所述方法的步骤；或执行权利要求9-16中任一项所述方法的步骤。
  20. 一种计算机可读存储介质，其特征在于，其存储有计算机程序或指令，所述计算机程序或指令被计算机执行时实现权利要求1-8中任一项所述方法的步骤；或实现权利要求9-16中任一项所述方法的步骤。
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CN110351848A (zh) * 2018-04-04 2019-10-18 华为技术有限公司 一种时域资源分配方法及装置
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