WO2023207804A1 - 信道接入方法、装置及通信设备 - Google Patents

信道接入方法、装置及通信设备 Download PDF

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Publication number
WO2023207804A1
WO2023207804A1 PCT/CN2023/089875 CN2023089875W WO2023207804A1 WO 2023207804 A1 WO2023207804 A1 WO 2023207804A1 CN 2023089875 W CN2023089875 W CN 2023089875W WO 2023207804 A1 WO2023207804 A1 WO 2023207804A1
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Prior art keywords
target
communication device
value
channel
transmission
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PCT/CN2023/089875
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English (en)
French (fr)
Inventor
李�灿
纪子超
姜蕾
王欢
李�根
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维沃移动通信有限公司
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Publication of WO2023207804A1 publication Critical patent/WO2023207804A1/zh

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Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W4/00—Services specially adapted for wireless communication networks; Facilities therefor
    • H04W4/70—Services for machine-to-machine communication [M2M] or machine type communication [MTC]
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W74/00—Wireless channel access
    • H04W74/08—Non-scheduled access, e.g. ALOHA
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W74/00—Wireless channel access
    • H04W74/08—Non-scheduled access, e.g. ALOHA
    • H04W74/0808—Non-scheduled access, e.g. ALOHA using carrier sensing, e.g. carrier sense multiple access [CSMA]
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W76/00—Connection management
    • H04W76/10—Connection setup

Definitions

  • the present application belongs to the field of communication technology, and specifically relates to a channel access method, device and communication equipment.
  • S also known as or translated as secondary link, side link, side link, etc.
  • SL refers to the direct data transmission between terminals (User Equipment, UE) on the physical layer. .
  • SL nodes can achieve channel access through Listen-Before-Talk (LBT) on unlicensed spectrum. If the detected energy is lower than the threshold, it is considered If the channel is empty, otherwise the channel is considered busy and channel access is performed when the channel is empty.
  • LBT Listen-Before-Talk
  • the channel access scheme provided in the related art has problems such as low spectrum resource utilization efficiency, which affects the performance of the communication system.
  • Embodiments of the present application provide a channel access method, device and communication equipment, which can improve spectrum resource utilization efficiency and ensure communication system performance.
  • a channel access method including: a first communication device determines the transmission status of a second communication device on the target secondary link SL channel within the target detection time; the first communication device determines the transmission status of the second communication device on the target secondary link SL channel according to the The transmission situation of the second communication device determines whether to access the target SL channel; wherein the second communication device is a communication device other than the first communication device, and the first communication device and the second communication device is a communication device for sending SL data.
  • a channel access device which is applied to a first communication device and includes: a detection module for determining the transmission status of the second communication device on the target secondary link SL channel within the target detection time; determining A module configured to determine whether to access the target SL channel according to the transmission situation of the second communication device; wherein the second communication device is a communication device other than the first communication device.
  • the first communication device and the second communication device are communication devices used for sending SL data.
  • a communication device in a third aspect, includes a processor and a memory.
  • the memory stores a program or instructions that can be run on the processor.
  • the program or instructions are implemented when executed by the processor. The steps of the method as described in the first aspect.
  • a fourth aspect provides a terminal, including a processor and a communication interface, wherein the communication interface is coupled to the processor, and the processor is used to run programs or instructions to implement the method described in the first aspect. step.
  • a communication system including: a first communication device, the first communication device may be configured to perform the steps of the channel access method as described in the first aspect.
  • a readable storage medium is provided. Programs or instructions are stored on the readable storage medium. When the programs or instructions are executed by a processor, the steps of the method described in the first aspect are implemented.
  • a chip in a seventh aspect, includes a processor and a communication interface.
  • the communication interface is coupled to the processor.
  • the processor is used to run programs or instructions to implement the method described in the first aspect. A step of.
  • a computer program product/program product is provided, the computer program/program product is stored in a storage medium, and the computer program/program product is executed by at least one processor to implement as described in the first aspect steps of the method.
  • the first communication device when accessing the target SL channel, detects the transmission status of other SL communication devices on the target SL channel, and then determines the access based on the transmission status of other SL communication devices on the target SL channel. Or not accessing the target SL channel, thus enabling the SL device to perform frequency division multiplexing on the target SL channel to increase the access probability of the target SL channel, improve the spectrum utilization of the target SL channel, and ensure communication system performance.
  • Figure 1 is a schematic structural diagram of a communication system provided by an exemplary embodiment of the present application.
  • Figure 2 is a schematic flowchart of a channel access method provided by an exemplary embodiment of the present application.
  • Figure 3 is a schematic flowchart of a channel access method provided by another exemplary embodiment of the present application.
  • Figure 4a is a schematic diagram of the determination process of the first value and the second value provided by an exemplary embodiment of the present application.
  • Figure 4b is a schematic diagram of SL channel transmission provided by an exemplary embodiment of the present application.
  • Figure 5 is a schematic flowchart of a channel access method provided by another exemplary embodiment of the present application.
  • Figure 6a is a schematic diagram of SL transmission within target detection time provided by an exemplary embodiment of the present application.
  • Figure 6b is a schematic diagram of SL transmission within target detection time provided by another exemplary embodiment of the present application.
  • Figure 6c is a schematic diagram of SL transmission within target detection time provided by yet another exemplary embodiment of the present application.
  • Figure 6d is a schematic diagram of SL transmission within target detection time provided by yet another exemplary embodiment of the present application.
  • Figure 7 is a schematic structural diagram of a channel access device provided by an exemplary embodiment of the present application.
  • Figure 8 is a schematic structural diagram of a communication device provided by an exemplary embodiment of the present application.
  • Figure 9 is a schematic structural diagram of a terminal provided by an exemplary embodiment of the present application.
  • Figure 10 is a schematic structural diagram of a network-side device provided by an exemplary embodiment of the present application.
  • first, second, etc. in the description and claims of this application are used to distinguish similar objects and are not used to describe a specific order or sequence. It is to be understood that the terms so used are interchangeable under appropriate circumstances so that the embodiments of the present application can be practiced in sequences other than those illustrated or described herein, and that "first" and “second” are distinguished objects It is usually one type, and the number of objects is not limited.
  • the first object can be one or multiple.
  • “and/or” in the description and claims indicates at least one of the connected objects, and the character “/" generally indicates that the related objects are in an "or” relationship.
  • LTE Long Term Evolution
  • LTE-Advanced, LTE-A Long Term Evolution
  • LTE-A Long Term Evolution
  • CDMA Code Division Multiple Access
  • TDMA Time Division Multiple Access
  • FDMA Frequency Division Multiple Access
  • OFDMA Orthogonal Frequency Division Multiple Access
  • SC-FDMA Single-carrier Frequency-Division Multiple Access
  • NR New Radio
  • FIG. 1 shows a block diagram of a wireless communication system to which embodiments of the present application are applicable.
  • the wireless communication system includes a terminal 11 and a network side device 12.
  • the terminal 11 may be a mobile phone, a tablet computer (Tablet Personal Computer), a laptop computer (Laptop Computer), or a notebook computer, a personal digital assistant (Personal Digital Assistant, PDA), a palmtop computer, a netbook, or a super mobile personal computer.
  • Tablet Personal Computer Tablet Personal Computer
  • laptop computer laptop computer
  • PDA Personal Digital Assistant
  • PDA Personal Digital Assistant
  • UMPC ultra-mobile personal computer
  • UMPC mobile Internet device
  • Mobile Internet Device MID
  • AR augmented reality
  • VR virtual reality
  • robots wearable devices
  • VUE vehicle-mounted equipment
  • PUE pedestrian terminal
  • smart home home equipment with wireless communication functions, such as refrigerators, TVs, washing machines or furniture, etc.
  • PC personal computers
  • teller machines or self-service Terminal devices such as mobile phones
  • wearable devices include: smart watches, smart bracelets, smart headphones, smart glasses, smart jewelry (smart bracelets, smart bracelets, smart rings, smart necklaces, smart anklets, smart anklets, etc.), Smart wristbands, smart clothing, etc.
  • the network side device 12 may include an access network device or a core network device, where the access network device 12 may also be called a radio access network device, a radio access network (Radio Access Network, RAN), a radio access network function or Wireless access network unit.
  • the access network device 12 may include a base station, a WLAN access point or a WiFi node, etc.
  • the base station may be called a Node B, an evolved Node B (eNB), an access point, a Base Transceiver Station (BTS), a radio Base station, radio transceiver, Basic Service Set (BSS), Extended Service Set (ESS), Home Node B, Home Evolved Node B, Transmitting Receiving Point (TRP) or all
  • eNB evolved Node B
  • BTS Base Transceiver Station
  • BSS Basic Service Set
  • ESS Extended Service Set
  • Home Node B Home Evolved Node B
  • TRP Transmitting Receiving Point
  • this is a schematic flowchart of a channel access method 200 provided by an exemplary embodiment of the present application.
  • the method 200 can be, but is not limited to, executed by a first communication device. Specifically, it can be executed by hardware installed in the first communication device. and/or software execution. In this embodiment, the method 200 may include at least the following steps.
  • the first communication device determines the transmission status of the second communication device on the target SL channel within the target detection time.
  • the first communication device and the second communication device may both be terminals or network-side devices.
  • the first communication device and the second communication device may both be terminals.
  • the first communication device may be a terminal or a network-side device. It is a terminal, the second communication device is a network-side device, etc., and is not limited here.
  • the second communication device is a communication device other than the first communication device, and the first communication device and the second communication device are used for sending SL data.
  • Communication devices, that is, the first communication device and the second communication device may also be called SL nodes).
  • the target detection time may also be called energy detection time, energy detection opportunity, energy detection window, etc.
  • the size of the target detection time may be implemented by protocol agreement, high-level configuration or network side configuration.
  • the target detection time may be sensing slot duration (such as 9us), delay time (defer duration, such as 16us), sensing interval (sensing interval, such as 25us) or sensing At least 4us etc. during the slot duration.
  • the first communication device when it detects the transmission status (or channel occupation status) of the second communication device, it may detect one target SL channel or multiple target SL channels. conduct.
  • the transmission situation of the second communication device may include the existence of SL transmission corresponding to the second communication device, or the absence of SL transmission corresponding to the second communication device, wherein the SL transmission includes the current SL transmission, At least one of reserved SL transmission, potential SL transmission, and expected SL transmission.
  • the process of the first communication device detecting the transmission status of the second communication device can be understood as an LBT process, or a clear channel assessment (Clear Channel Assessment, CCA) process.
  • the first communication device mentioned in S220 determines whether to access the target SL channel according to the transmission situation of the second communication device, which can also be understood as the LBT for the target SL channel ( or CCA) successfully or unsuccessfully.
  • the first communication device determines whether to access the target SL channel according to the transmission situation of the second communication device.
  • the first communication device when accessing the target SL channel, detects the transmission status of other SL communication devices on the target SL channel, and then determines the access based on the transmission status of other SL communication devices on the target SL channel. Or not accessing the target SL channel, thus enabling the SL device to perform frequency division multiplexing on the target SL channel to increase the access probability of the target SL channel, improve the spectrum utilization of the target SL channel, and ensure communication system performance.
  • FIG. 3 it is a schematic flowchart of a channel access method 300 provided by an exemplary embodiment of the present application.
  • the method 300 can be, but is not limited to, executed by a first communication device. Specifically, it can be executed by hardware installed in the first communication device. and/or software execution. In this embodiment, the method 300 may include at least the following steps.
  • the first communication device determines the transmission status of the second communication device on the target SL channel within the target detection time.
  • the implementation process of S310 can refer to the relevant description in the method embodiment 200. In one implementation manner, please refer to Figure 3 again.
  • the implementation process of S310 can include S311-S313, as follows.
  • the first communication device receives target sidelink control information (Sidelink Control Information, SCI) based on the target detection time.
  • target sidelink control information Sidelink Control Information, SCI
  • the second communication device may be the sending end of the target SCI.
  • the target SCI may also be Can be multiple.
  • the target SCI may include at least one of the following (11)-(16):
  • the size of the first period may be implemented by protocol agreement, high-level configuration or network-side configuration.
  • the first period may include a time slot or the like.
  • RSRP reference signal received power
  • DMRS demodulation Reference Signal
  • the first communication device determines the time-frequency resource information of the channel corresponding to the second communication device according to the target SCI.
  • the corresponding channel of the second communication device may be a physical side link control channel (Physical SideLink Control Channel, PSCCH), a physical side link shared channel (Physical SideLink Shared Channel, PSSCH), PSCCH-DMRS, PSSCH- DMRS, Physical SideLink Feedback Channel (PSFCH), Automatic Gain Control (AGC), Gap (GAP), etc.
  • the time-frequency resource information of the corresponding channel of the second communication device may be the time slot (slot), symbol (Symbol), start and length indication value (Start and length) of the time domain indicated by the target SCI.
  • the time-frequency resource information of the channel corresponding to the second communication device may also be a sub-channel (sub-channel), physical resource block (Physical Resource block) indicated by the target SCI Block, PRB), etc., are not limited here.
  • the first communication device determines the transmission status of the second communication device according to the time-frequency resource information of the channel corresponding to the second communication device.
  • the first communication device determines, based on the time-frequency resource information of the channel corresponding to the second communication device, that there is SL transmission corresponding to the second communication device on the target SL channel, or that there is no SL transmission corresponding to the second communication device. transmission.
  • the first communication device may also first determine whether the target SL channel is dedicated to the SL communication device. For example, when the target When the spectrum corresponding to the SL channel is not a dedicated spectrum of the SL communication device, the first communication device may perform the step of determining the transmission status of the second communication device on the target SL channel within the target detection time, and if When the spectrum corresponding to the target SL channel is a dedicated spectrum of the SL communication device, there is no need to perform LBT and determine that the target SL channel is empty, thereby saving terminal energy consumption and improving channel access efficiency.
  • the SL communication device at least includes the first communication device and the second communication device, and the spectrum corresponding to the target SL channel is a dedicated spectrum of the SL communication device, which can also be understood as not having other coexisting systems (such as WIFI). .
  • S320 The first communication device determines whether to access the target SL channel according to the transmission situation of the second communication device.
  • the second communication device is a communication device other than the first communication device, and the first communication device and the second communication device are communication devices used for sending SL data.
  • the implementation process of S320 may refer to the relevant description in the method embodiment 200. In one implementation manner, please refer to FIG. 3 again.
  • the implementation process of S320 may include S321-S323, as follows.
  • the first communication device determines a target value based on the difference between the first value and the second value.
  • the first value may be understood as the total energy or total power detected by the first communication device on the target SL channel.
  • the first value may be the value detected by the first communication device within the target detection time based on the received signal strength indication (Received Signal Strength Indication, RSSI) detected within the target detection time. Any one of the detected energy value, the RSSI of the PSCCH carrying the target SCI, and the RSSI of the PSSCH indicated by the SCI is determined.
  • RSSI Received Signal Strength Indication
  • the second value may be understood as the energy or power of the second communication device for SL transmission detected by the first communication device on the target SL channel.
  • the second value may be determined by the first communication device according to the transmission situation of the second communication device or the RSRP of the DMRS indicated by the target SCI.
  • the first communication device determines the second value based on the transmission status of the second communication device within the target detection time.
  • the process of determining the second value may include: based on the transmission status of the second communication device within the target detection time If there is an SL transmission corresponding to the second communication device within the target detection time, the second value is a specific value.
  • the specific value may be a protocol agreement or a specific value configured on the network side.
  • the second value is 0.
  • the process of determining the second value by the first communication device according to the RSRP of the DMRS indicated by the target SCI may include: the first communication device according to the target frequency domain resource information and the target RSRP, Determine the second value; wherein the target frequency domain resource information may include frequency domain resource information of the DMRS indicated by the target SCI, frequency domain resource information of the PSSCH carrying the target SCI, frequency domain resource information of the PSSCH carrying the target SCI, PSCCH At least one item of frequency domain resource information.
  • the target RSRP may include the RSRP of the DMRS indicated by the target SCI.
  • the target RSRP is a set of RSRPs of DMRSs indicated by multiple target SCIs.
  • the RSRP of the DMRS indicated by the target SCI may include any of the following (21)-(26).
  • RSRP of the DMRS indicated by the target SCI corresponding to SL UE 1 is RSRP1
  • SL UE The RSRP of the DMRS indicated by the target SCI corresponding to SL UE 3 is RSRP2
  • the RSRP of the DMRS indicated by the target SCI corresponding to SL UE 3 is RSRP3...
  • the frequency domain resource information of the DMRS indicated by the target SCI corresponding to SL UE 1 is RE1.
  • the frequency domain resource information of DMRS indicated by the target SCI corresponding to SL UE 2 is RE2
  • the frequency domain resource information of DMRS indicated by the target SCI corresponding to SL UE 3 is RE3.
  • the second value can be: RSRP1*RE1 (The number of resource units (REs) corresponding to RSRP1)+RSRP2*RE2 (the number of REs corresponding to RSRP2)+RSRP3*RE3 (the number of REs corresponding to RSRP3)+....
  • the RSRP corresponding to the DMRS on the preset symbol indicated by the target SCI may be implemented by protocol agreement or high-level configuration.
  • the RSRP of the DMRS corresponding to the time domain position closest to the start time or end time in the target detection time.
  • the RSRP of the DMRS corresponding to the time domain position farthest from the start time or end time in the target detection time.
  • the DMRS in the above (21)-(26) can also be the DMRS corresponding to the PSCCH or PSSCH, and there is no limitation here.
  • the target detection time is the same as the PSSCH or PSCCH carrying the target SCI.
  • the transmission time at least partially overlaps, or the target detection time at least partially overlaps with the transmission time of the PSSCH or PSCCH indicated by the target SCI, which is not limited here.
  • the first communication device calculates the target value based on the value and the second value
  • the first value and the second value may be obtained based on the same time unit. , such as a symbol, etc.
  • the first communication device may perform target based on the type of the target SL channel. Determination of value.
  • the first communication device determines the target value based on the difference between the third value and the fourth value.
  • the third value is an average of a plurality of first values, and the first value corresponds to the target SL channel one-to-one, or the third value is a specified value among a plurality of the target SL channels.
  • the first value corresponding to the SL channel, or the third value is the first value corresponding to any SL channel among the plurality of target SL channels.
  • the fourth value is an average of a plurality of second values, and the second value corresponds to the target SL channel one-to-one, or the fourth value corresponds to a designated SL channel among the plurality of target SL channels.
  • the second value, or the fourth value is the second value corresponding to any SL channel among the plurality of target SL channels.
  • the first communication device determines the target SL channel according to the fifth value and the sixth value.
  • the difference between the values determines the target value; wherein the fifth value is an average of a plurality of first values, and the first value corresponds to the target SL channel one-to-one, or the fifth value is The first value corresponding to the specified SL channel among the plurality of target SL channels, or the fifth value is the first value corresponding to any SL channel among the plurality of target SL channels, or the fifth value
  • the fifth value is the first value corresponding to the SL channel with the earliest transmission time among the plurality of target SL channels, or the fifth value is the first value corresponding to the SL channel with the latest transmission time among the plurality of target SL channels. value.
  • the sixth value is a second value corresponding to a designated SL channel among the plurality of target SL channels, or the sixth value is a second value corresponding to any SL channel among the plurality of target SL channels. , or the sixth value is the second value corresponding to the SL channel with the earliest transmission time among the plurality of target SL channels, or the sixth value is the latest transmission time among the plurality of target SL channels. The second value corresponding to the SL channel.
  • the target value is determined based on the difference between the first value and the second value, which can be understood as: if the SL UE (i.e., the first communication device) detects that There are multiple SL transmissions of other SL UEs (i.e. second communication devices) at the target detection time (such as time slots).
  • the first communication device when it performs CCA at the target detection time, it can obtain the total energy detected from the (i.e., the first value), remove the energy of the multiple other SL UEs sending SL (i.e., the second value), and then evaluate the channel status based on the removed energy (the foregoing process is referred to as CCA based on SL transmission detection), so that in One or more SL communication devices can be allowed to access the target SL channel at the same time, improving the probability of the first communication device accessing the SL channel, and at the same time solving the problem in related technologies that only one SL communication device can access the channel at the same time. This leads to low resource utilization and low transmission data rate.
  • the first communication device can subtract the received second communication in the process of accessing the unlicensed channel.
  • the energy of the device is then compared with the first threshold value to determine whether channel access is possible, which can increase spectrum utilization efficiency and ensure the performance of the communication system without affecting the fairness between different communication systems.
  • the first communication device determines the channel status of the target SL channel according to the target value.
  • the first communication device when the first communication device determines the channel status of the target SL channel according to the target value, if the target value is greater than a first threshold value, then the first communication device may determine the channel status of the target SL channel. Describe the target SL channel information The channel status is empty; that is, the target SL channel is not occupied, or there is no second communication device on the target SL channel for SL transmission.
  • the first communication device determines that the target SL channel is busy, that is, the target SL channel is occupied, or there is a second communication device on the target SL channel. SL transmission.
  • the first threshold value is related to the target detection frequency domain (or LBT bandwidth) corresponding to the target SL channel.
  • the first threshold value may be "-72+10*log10(BWMHz/20MHz)", where BW is the bandwidth of the target detection frequency domain.
  • the first communication device determines whether to access the target SL channel according to the channel status of the target SL channel.
  • the first communication device determines whether to access or not to access the target secondary link SL channel based on the transmission situation of the second communication device, which may include the following: At least one of two ways.
  • Method 1 The first communication device performs at least N times the step of determining the transmission status of the second communication device on the target SL channel within the target detection time, and determines based on the transmission status of the second communication device. When the number of times the target SL channel is empty is greater than the second threshold, it is determined to access the target SL channel, where N is an integer greater than or equal to 1.
  • the second threshold is related to the type of LBT and/or the priority of the LBT. For example, if the type of LBT is type1, then the second threshold is N, and if the type of LBT is type2, then the second threshold is 1. For another example, if the priority level of LBT is 1 (highest priority), then the second threshold is 1, and the priority level of LBT is 4 (lowest priority), then the second threshold is N.
  • Method 2 After the count value of the first counter is 0, the first communication device performs M times the step of determining the transmission status of the second communication device on the target SL channel within the target detection time, and according to If the transmission situation of the second communication device determines that the number of times the target SL channel is empty is greater than a third threshold, it is determined to access the target SL channel for transmission, where the first counter is used to indicate the first communication The number of times the device performs the step of determining the transmission situation of the second communication device on the target SL channel within the target detection time, M is an integer greater than or equal to 1.
  • the third threshold is related to the type of LBT and/or the priority of the LBT. For example, if the type of LBT is type1, then the third threshold is M, and if the type of LBT is type2, then the third threshold is 1. For another example, if the priority level of LBT is 1 (highest priority), then the third threshold is 1, and if the priority level of LBT is 4 (lowest priority), then the third threshold is M.
  • Type1LBT is a channel listening mechanism based on back-off. When the transmission node detects that the channel is busy, it backs off and continues listening until it detects that the channel is empty.
  • Type2C means that the sending node does not perform LBT, that is, no LBT or immediate transmission.
  • Type2A and Type2B LBT are single-slot (one-shot) LBT, that is, the node performs an LBT before transmission, and transmits when the channel is empty.
  • Type2A performs LBT within 25us, which is suitable for sharing channel occupancy time (COT) when the gap between two transmissions is greater than or equal to 25us.
  • Type2B performs LBT within 16us, which is suitable for sharing COT when the gap between the two transmissions is equal to 16us.
  • Type2LBT which is suitable for License Assisted Access (LAA), enhanced LAA (enhanced LAA, eLAA), further enhanced LAA (FeLAA), etc.
  • LAA License Assisted Access
  • eLAA enhanced LAA
  • FeLAA further enhanced LAA
  • the types of LBT are Type1, Type2, and Type3.
  • Type1 is a channel listening mechanism based on fallback
  • Type2 is one-shotLBT, which performs LBT of 5us within 8us
  • Type3 does not perform LBT.
  • the first communication device detects the target SCI sent by the second communication device, such as SCI 1 in Figure 4a, then the first value and the second value are determined as follows.
  • the first communication device may determine the second value based on the RSRP of the DMRS of the PSCCH of symbol 1 and the number of REs of the PSCCH of symbol 1, and determine the first value to be the RSSI of symbol 1.
  • the first communication device determines the second value based on the RSRP of the DMRS of the PSCCH of symbol 2 and the number of REs of the PSCCH of symbol 2, and determines the first value to be the RSSI of symbol 2.
  • the first communication device determines the second value based on the RSRP of the DMRS used to transmit the PSSCH of symbol 3 and the number of REs of the PSSCH of symbol 3, and determines the first value to be the RSSI of symbol 3.
  • the first communication device determines the second value based on the RSRP of the DMRS of the PSSCH of symbol 3 and the number of REs of the PSSCH of symbol 3, and determines the first value to be the RSSI of symbol 4.
  • the first communication device determines the second value based on the RSRP of the DMRS of the PSSCH of symbol 3 and the number of REs of the PSSCH of symbol 3, and determines the first value to be the RSSI of symbol 5.
  • the first communication device determines the second value based on the RSRP of the DMRS of the PSSCH of symbol 8 and the number of REs of the PSSCH of symbol 8, and determines the first value to be the RSSI of symbol 8.
  • the first communication device determines the second value based on the RSRP of the DMRS of the PSSCH of symbol 8 and the number of REs of the PSSCH of symbol 8, and determines the first value to be the RSSI corresponding to the PSSCH filling the Gap of symbol 10, or based on the total energy Detect and determine the first value to be the RSSI of symbol 10.
  • Case 8 The first communication device determines that the first value is the RSSI of symbol 11 and the second value is 0 based on total energy detection.
  • PSCCH/1st SCI is transmitted on symbols 1 and 2
  • 2nd SCI is transmitted on symbols 3 and 4 (that is, PSSCH)
  • PSSCH is transmitted on symbols 1 to 12.
  • the PSSCH and PSCCH on symbol 1 and symbol 2 can be transmitted through frequency division multiplexing. It should be noted that FIG. 4a only shows the case of one PRB, but this embodiment is not limited to the case of one PRB.
  • the first communication device performs LBT at the position of slot n, its starting position is symbol 8, and the LBT bandwidth is 20MHz.
  • the reception of the target SCI is determined based on the position of the slot where the target detection time T sl is located. SCI1 was received in this slot.
  • BWP Bandwidth Part
  • SCS Subcarrier Spacing
  • RSRP1 is the RSRP of symbol 8.
  • the received power of PSSCH of symbol 8 is converted.
  • Use RSSI that is, the first value
  • PSSCH when determined
  • the second power/energy value is a specific value predefined by the protocol or configured by the network; otherwise, it is 0.
  • the target value is obtained, and the target value and the second value are obtained.
  • a threshold value is compared. If the target value is less than the first threshold value, the channel detection this time is empty.
  • the first communication device can access the target SL channel and other configured resource pools within the 20 MHz target SL channel to perform SL transmission.
  • the PTRS in Figure 4b is the phase-tracking reference signal.
  • the first communication device obtains the information of the channel occupied by the second communication device according to the target SCI, thereby detecting the energy of each second communication device within the LBT bandwidth.
  • the process of the first communication device accessing the unlicensed channel The received energy of the second communication device is subtracted from the first threshold value, and then compared with the first threshold value to determine whether channel access is possible, which can increase the frequency spectrum without affecting the fairness between different communication systems. Utilize efficiency to ensure the performance of communication systems.
  • FIG. 5 this is a schematic flowchart of a channel access method 500 provided by an exemplary embodiment of the present application.
  • the method 500 can be, but is not limited to, executed by a first communication device. Specifically, it can be executed by hardware installed in the first communication device. and/or software execution. In this embodiment, the method 500 may include at least the following steps.
  • S510 If the target detection time is a gap, the first communication device executes S520 or S530.
  • the gap within the target detection time can be implemented by protocol agreement or high-level configuration, or can be determined by the first communication device through the LBT process, which is not limited here.
  • the first communication device may perform CCA in the form of S520, that is, for CCA on PSCCH/PSSCH, since the first communication device can identify PSCCH/PSSCH transmission, the first communication device performs CCA based on SL transmission detection.
  • the first communication device may perform CCA based on total energy detection, such as S530.
  • the implementation process of S520 and S530 may be as follows.
  • the first communication device When the Gap is used to transmit PSSCH and/or PSCCH, the first communication device The transmission status of the second communication device on the target SL channel is determined within the detection time, and based on the transmission status of the second communication device, it is determined whether to access the target SL channel or not.
  • the second communication device is a communication device other than the first communication device, and the first communication device and the second communication device are communication devices used for sending SL data.
  • Whether the Gap is used for PSSCH and/or PSCCH can be implemented by protocol agreement or high-level configuration.
  • the implementation process of "detecting the transmission situation of the second communication device within the target detection time and determining whether to access the target SL channel according to the transmission situation of the second communication device" mentioned in S520 Reference may be made to the relevant descriptions in method embodiments 200 and/or 300, which will not be described again to avoid repetition.
  • the first communication device determines the transmission situation of the third communication device on the Gap based on the target detection time, and determines the transmission status of the third communication device based on the target detection time.
  • the transmission conditions of the three communication devices determine whether to access the target SL channel, where the third communication device is a communication device other than the first communication device, that is, the third communication device may be an SL Communication equipment or non-SL communication equipment is not limited here.
  • the first communication device may perform any of (31)-(32).
  • the first communication device suspends execution of the LBT in the second period in the Gap, and performs LBT in other periods in the Gap except the second period, to obtain the first 3. Transmission status of communication equipment.
  • the first communication device pauses CCA in the first part of the Gap (ie, the second period), and the pause time is determined by the UE implementation/(pre-)configuration decision/protocol agreement.
  • the second period is related to the delay time of the SL transmission.
  • the second period is determined by the first communication device or implemented by (pre)configuration decision or protocol agreement, etc., which is not limited here.
  • the first communication device performs LBT in the third period corresponding to the Gap to obtain the transmission status of the third communication device, wherein the third period is located in the SL corresponding to the third communication device. before transmission.
  • the third period may be obtained by extending the Gap, or the third period may be a part of the Gap without SL transmission, etc., thereby ensuring that there is no SL transmission in the third period. SL transmission.
  • the first communication device performs CCA on the Gap (that is, the third period, such as 25 us) before the SL transmission corresponding to the third communication device until the SL transmission corresponding to the third communication device starts.
  • the CCA is CCA based on total energy detection.
  • the new Gap (i.e., the aforementioned third period) between PSCCH/PSSCH and PSCCH/PSSCH, between PSCCH/PSSCH and PSFCH, or between PSFCH and PSCCH/PSSCH can be agreed upon by the protocol or (Pre-)configuration to ensure no delayed SL transmission within the new Gap.
  • the length of the new Gap can be greater than 1 symbol, and the new Gap can be located at the beginning of the slot (the beginning of Slot n+1 in Figure 6c) or at the end. It should be noted that the legacy Gap in Figure 6c is the Gap during the aforementioned target detection time.
  • the first communication device can also suspend CCA on some preset new gaps.
  • the time is determined by the first communication device implementation/(pre)configuration decision/protocol agreement. (For example, CCA is paused on one/N Gap symbols after the end of PSCCH/PSSCH, and CCA is paused on one/N Gap symbols after the end of PSFCH)
  • the first communication device can also be as shown in Figure 6d. If it is detected that the PSCCH/PSSCH transmission of other SL UEs will fill a certain Gap, then .
  • the first pass device performs CCA based on SL transmission detection on the Gap, it can remove the energy of SL transmission that fills the Gap (note: the form of filling the Gap is not limited, and it can be filling the Gap by repeatedly sending PSSCH/sending PSFCH, etc. ).
  • the first communication device determines channel access based on the gap information of the target detection time, which can improve the flexibility of the channel access process.
  • the execution subject may be a channel access device.
  • the channel access device performing the channel access method 200-500 is used as an example to illustrate the channel access device provided by the embodiment of the present application.
  • the device 700 may include: a detection module 710, configured to determine the second channel access device on the target SL channel within the target detection time.
  • the transmission situation of the communication device; the determination module 720 is used to determine whether to access the target secondary link SL channel according to the transmission situation of the second communication device; wherein the second communication device is in addition to the third communication device.
  • a communication device other than a communication device, the first communication device and the second communication device are communication devices used for sending SL data.
  • the transmission situation of the second communication device includes the existence of SL transmission corresponding to the second communication device, or the absence of SL transmission corresponding to the second communication device, wherein the SL transmission includes the current SL transmission. , at least one of reserved SL transmission, potential SL transmission, and expected SL transmission.
  • the detection module 710 determines the transmission status of the second communication device on the target SL channel within the target detection time, including: receiving target secondary link control information SCI based on the target detection time; according to the The target SCI determines the time-frequency resource information of the channel corresponding to the second communication device; and determines the transmission status of the second communication device according to the time-frequency resource information of the channel corresponding to the second communication device.
  • the target SCI includes at least one of the following: SCI received within the target detection time; SCI received within the first period before or after the target detection time; SCI that meets the first condition,
  • the first condition includes that the reference signal received power RSRP or energy value of the demodulation reference signal DMRS indicated by the SCI exceeds the first threshold; the SCI received in the target detection frequency domain, the target detection frequency domain and the target SL channel Correspondence; SCI received on a target resource pool corresponding to the first communication device and/or the second communication device; SCI received on a target resource corresponding to the target resource The first communication device and/or the second communication device correspond.
  • the determining module 720 determines the step of accessing or not accessing the target SL channel according to the transmission situation of the second communication device, including: determining the target according to the difference between the first value and the second value. value, wherein the first value is the first communication device based on the received signal strength indicator RSSI detected within the target detection time, the energy detection value detected within the target detection time, carrying the The second value is determined by any one of the RSSI of the PSCCH of the target SCI and the RSSI of the PSSCH indicated by the SCI, and the second value is determined by the first communication device according to the transmission situation of the second communication device or the target SCI.
  • Determine the RSRP of the indicated DMRS determine the target based on the target value The channel status of the SL channel; determine whether to access the target SL channel or not according to the channel status of the target SL channel.
  • the second value is a specific value, and the specific value It is agreed by the protocol or configured by a higher layer; when the transmission situation of the second communication device is that there is no SL transmission corresponding to the second communication device within the target detection time, the second value is determined to be 0.
  • the second value is determined based on the target frequency domain resource information and the target RSRP; wherein the target frequency domain resource information includes the frequency domain resource information of the DMRS indicated by the target SCI, the frequency domain resource information carrying the target SCI At least one of the frequency domain resource information of the physical secondary link shared channel PSSCH and the frequency domain resource information of the physical secondary link control channel PSCCH carrying the target SCI; the target RSRP includes the information indicated by the target SCI. DMRS RSRP.
  • the RSRP of the DMRS indicated by the target SCI includes: When the symbol number of the DMRS indicated by the target SCI is greater than 1, the RSRP of the DMRS indicated by the target SCI includes any of the following: The RSRP corresponding to the DMRS on the preset symbol indicated by the target SCI; the average RSRP corresponding to each symbol in the DMRS indicated by the target SCI; the RSRP corresponding to each symbol in the DMRS indicated by the target SCI The maximum value; the minimum value of the RSRP corresponding to each symbol in the DMRS indicated by the target SCI; for the DMRS indicated by the target SCI, the corresponding time domain position closest to the start time or end time in the target detection time The RSRP of the DMRS; for the DMRS indicated by the target SCI, the RSRP of the DMRS corresponding to the time domain position farthest from the start time or end time in the target detection time.
  • the target detection time at least partially overlaps with the transmission time of the PSSCH or PSCCH.
  • the step of determining the target value by the determination module 720 based on the difference between the first value and the second value includes at least one of the following: there are multiple target SL channels corresponding to the target detection time, and multiple When two of the target SL channels are channels of the same type, the target value is determined based on the difference between the third value and the fourth value; there are multiple target SL channels corresponding to the target detection time, and there are multiple target SL channels.
  • the target value is determined based on the difference between the fifth value and the sixth value; wherein the third value is an average of a plurality of first values, The first value corresponds to the target SL channel one-to-one, or the third value is a first value corresponding to a specified SL channel among a plurality of target SL channels, or the third value is a plurality of target SL channels.
  • the fourth value is an average of a plurality of second values, and the second value corresponds to the target SL channel one-to-one, or, The fourth value is a second value corresponding to a designated SL channel among the plurality of target SL channels, or the fourth value is a second value corresponding to any SL channel among the plurality of target SL channels.
  • the fifth value is an average of a plurality of first values, and the first value corresponds to the target SL channel one-to-one, or the fifth value is a designated SL among a plurality of the target SL channels.
  • the first value corresponding to the channel, or the fifth value is the first value corresponding to any SL channel among the plurality of target SL channels, or the fifth value is the first value corresponding to the plurality of target SL channels.
  • the first value corresponding to the SL channel with the earliest transmission time, or the fifth value is the first value corresponding to the SL channel with the latest transmission time among the plurality of target SL channels; the sixth value is the first value corresponding to the plurality of target SL channels.
  • the second value corresponding to a designated SL channel among the target SL channels, or the sixth value is the second value corresponding to any one of the plurality of target SL channels, or the sixth value
  • the sixth value is the second value corresponding to the SL channel with the earliest transmission time among the plurality of target SL channels, or the sixth value is the second value corresponding to the SL channel with the latest transmission time among the plurality of target SL channels. value.
  • the step of determining the channel status of the target SL channel according to the target value by the determination module 720 includes: when the target value is greater than a first threshold value, determining that the target SL channel is Empty; when the target value is less than the first threshold value, determine that the target SL channel is busy; wherein the first threshold value is related to the target detection frequency domain corresponding to the target SL channel.
  • the determination module 720 determines whether to access or not to access the target secondary link SL channel according to the transmission situation of the second communication device, including at least one of the following: after performing the N times of When the step of determining the transmission status of the second communication device on the target SL channel within the target detection time, and it is determined based on the transmission status of the second communication device that the number of times the target SL channel is empty is greater than the second threshold, Determine access to the target SL channel, where N is an integer greater than or equal to 1; after the count value of the first counter is 0, after M times of determining the target SL channel on the target SL channel within the target detection time, The step of the transmission situation of the second communication device, and when it is determined that the number of times the target SL channel is empty according to the transmission situation of the second communication device is greater than a third threshold, determining access to the target SL channel for transmission, wherein, the The first counter is used to indicate the number of times the first communication device performs the step of determining the transmission situation of the second communication
  • the second threshold is related to the type of LBT and/or the priority of the LBT; and/or the third threshold is related to the type of the LBT and/or the priority of the LBT.
  • the detection module 710 when the target detection time is a Gap and the Gap is used to transmit PSSCH and/or PSCCH, the detection module 710 performs the step of determining the target SL channel within the target detection time.
  • the transmission situation of the second communication device, and the determination module 720 determines the step of accessing or not accessing the target SL channel according to the transmission situation of the second communication device; and/or, within the target detection time, is a Gap and the Gap cannot be used to transmit PSSCH and/or PSCCH
  • the detection module 710 is also configured to determine the transmission situation of the third communication device on the Gap based on the target detection time, and the The determining module 720 is also configured to determine whether to access the target SL channel according to the transmission situation of the third communication device, wherein the third communication device is a communication device other than the first communication device. .
  • the detection module 710 determines the transmission status of the third communication device on the Gap based on the target detection time, including any of the following: suspending the execution of all the transmission conditions in the Gap during the second period.
  • the LBT is performed, and the LBT is performed on other time periods in the Gap except the second time period to obtain the transmission situation of the third communication device, wherein the delay time of the second time period and the SL transmission is obtained.
  • Size-related perform LBT in the third period corresponding to the Gap to obtain the transmission status of the third communication device, where the third period is located before the SL transmission corresponding to the third communication device.
  • the detection module 710 is configured to perform the determination of the second communication device on the target SL channel within the target detection time when the spectrum corresponding to the target SL channel is not a dedicated spectrum of the SL communication device.
  • the channel access device 700 in the embodiment of this application may be an electronic device or a network side device.
  • the channel access device 700 When the channel access device 700 When the device 700 is an electronic device, it may be an electronic device with an operating system, or it may be a component in the electronic device, such as an integrated circuit or a chip.
  • the electronic device may be a terminal.
  • the terminal may include but is not limited to the types of terminal 11 listed above.
  • the network-side device may be a server, a network attached storage (Network Attached Storage, NAS), etc.
  • the network-side device may include but is not limited to the above listed
  • the type of network side device 12 is not specifically limited in the embodiment of this application.
  • the channel access device 700 provided by the embodiment of the present application can implement each process implemented by the method embodiments of Figures 2 to 5, and achieve the same technical effect. To avoid duplication, details will not be described here.
  • this embodiment of the present application also provides a communication device 800, including a processor 801 and a memory 802.
  • the memory 802 stores programs or instructions that can be run on the processor 801, for example,
  • the communication device 800 is a terminal, when the program or instruction is executed by the processor 801, each step of the above method embodiments 200-500 is implemented, and the same technical effect can be achieved.
  • the communication device 800 is a network-side device, when the program or instruction is executed by the processor 801, each step of the above method embodiments 200-500 is implemented, and the same technical effect can be achieved. To avoid duplication, the details are not repeated here.
  • the terminal when the communication device 800 is a terminal, the terminal may include a processor and a communication interface, the communication interface is coupled to the processor, and the processor is used to run programs or instructions to implement the method as follows: Steps of the methods described in Examples 200-500.
  • This terminal embodiment corresponds to the above-mentioned terminal-side method embodiment.
  • Each implementation process and implementation manner of the above-mentioned method embodiment can be applied to this terminal embodiment, and can achieve the same technical effect.
  • FIG. 9 is a schematic diagram of the hardware structure of a terminal that implements an embodiment of the present application.
  • the terminal 900 includes but is not limited to: a radio frequency unit 901, a network module 902, an audio output unit 903, an input unit 904, a sensor 905, a display unit 906, a user input unit 907, an interface unit 908, a memory 909, a processor 910, etc. at least some parts of it.
  • the terminal 900 may also include a power supply (such as a battery) that supplies power to various components.
  • the power supply may be logically connected to the processor 910 through a power management system, thereby managing charging, discharging, and power consumption through the power management system. Management and other functions.
  • the terminal structure shown in FIG. 9 does not constitute a limitation on the terminal.
  • the terminal may include more or fewer components than shown in the figure, or may combine certain components, or arrange different components, which will not be described again here.
  • the input unit 904 may include a graphics processor (Graphics Processing Unit, GPU) 9041 and a microphone 9042.
  • the graphics processor 9041 is responsible for the image capture device (GPU) in the video capture mode or the image capture mode. Process the image data of still pictures or videos obtained by cameras (such as cameras).
  • the display unit 906 may include a display panel 9061, which may be configured in the form of a liquid crystal display, an organic light emitting diode, or the like.
  • the user input unit 907 includes a touch panel 9071 and at least one of other input devices 9072 .
  • Touch panel 9071 also known as touch screen.
  • the touch panel 9071 may include two parts: a touch detection device and a touch controller.
  • Other input devices 9072 may include but are not limited to physical keyboards, function keys (such as volume control keys, switch keys, etc.), trackballs, mice, and joysticks, which will not be described again here.
  • the radio frequency unit 901 after receiving downlink data from the network side device, the radio frequency unit 901 can transmit it to the processor 910 for processing; in addition, the radio frequency unit 901 can send uplink data to the network side device.
  • the radio frequency unit 901 includes but is not limited to antennas, amplifiers, transceivers, couplers, low-noise amplifiers, duplexers, etc.
  • Memory 909 may be used to store software programs or instructions as well as various data.
  • the memory 909 may mainly include a first storage area for storing programs or instructions and a second storage area for storing data, wherein the first storage area may store an operating system, an application program or instructions required for at least one function (such as a sound playback function, Image playback function, etc.) etc.
  • memory 909 may include volatile memory or nonvolatile memory, or memory 909 may include both volatile and nonvolatile memory.
  • non-volatile memory can be read-only memory (Read-Only Memory, ROM), programmable read-only memory (Programmable ROM, PROM), erasable programmable read-only memory (Erasable PROM, EPROM), electrically removable memory.
  • Volatile memory can be random access memory (Random Access Memory, RAM), static random access memory (Static RAM, SRAM), dynamic random access memory (Dynamic RAM, DRAM), synchronous dynamic random access memory (Synchronous DRAM, SDRAM), double data rate synchronous dynamic random access memory (Double Data Rate SDRAM, DDRSDRAM), enhanced synchronous dynamic random access memory (Enhanced SDRAM, ESDRAM), synchronous link dynamic random access memory (Synchlink DRAM, SLDRAM) and Direct Rambus RAM (DRRAM).
  • RAM Random Access Memory
  • SRAM static random access memory
  • DRAM dynamic random access memory
  • synchronous dynamic random access memory Synchronous DRAM, SDRAM
  • Double data rate synchronous dynamic random access memory Double Data Rate SDRAM, DDRSDRAM
  • Enhanced SDRAM, ESDRAM synchronous dynamic random access memory
  • Synchlink DRAM, SLDRAM Direct Rambus RAM
  • Memory 909 in embodiments of the present application includes, but is not limited to, these and any other suitable types of memory.
  • the processor 910 may include one or more processing units; optionally, the processor 910 integrates an application processor and a modem processor, where the application processor mainly handles operations related to the operating system, user interface, application programs, etc., Modem processors mainly process wireless communication signals, such as baseband processors. It can be understood that the above modem processor may not be integrated into the processor 910.
  • the processor 910 is used to determine the transmission status of the second communication device on the target SL channel within the target detection time; and determine whether to access the target secondary link according to the transmission status of the second communication device.
  • SL channel wherein the second communication device is a communication device other than the first communication device, and the first communication device and the second communication device are communication devices used to send SL data.
  • the first communication device when accessing the target SL channel, detects the transmission status of other SL communication devices on the target SL channel, and then determines the access based on the transmission status of other SL communication devices on the target SL channel. Or not accessing the target SL channel, thus enabling the SL device to perform frequency division multiplexing on the target SL channel to increase the access probability of the target SL channel, improve the spectrum utilization of the target SL channel, and ensure communication system performance.
  • the network-side device when the communication device 800 is a network-side device, the network-side device may include a processor and a communication interface, the communication interface is coupled to the processor, and the processor is used to run a program or Instructions to implement the steps of the method as described in embodiments 200-500.
  • This network-side device embodiment corresponds to the above-mentioned network-side device method embodiment.
  • Each implementation process and implementation manner of the above-mentioned method embodiment can be applied to this network-side device embodiment, and can achieve the same technical effect.
  • the embodiment of the present application also provides a network side device.
  • the network side device 1000 includes: an antenna 1001, a radio frequency device 1002, a baseband device 1003, a processor 1004 and a memory 1005.
  • Antenna 1001 is connected to radio frequency device 1002.
  • the radio frequency device 1002 receives information through the antenna 1001 and converts the received The information is sent to the baseband device 1003 for processing.
  • the baseband device 1003 processes the information to be sent and sends it to the radio frequency device 1002.
  • the radio frequency device 1002 processes the received information and sends it out through the antenna 1001.
  • the method performed by the network side device in the above embodiment can be implemented in the baseband device 1003, which includes a baseband processor.
  • the baseband device 1003 may include, for example, at least one baseband board on which multiple chips are disposed, as shown in FIG. Program to perform the network device operations shown in the above method embodiments.
  • the network side device may also include a network interface 1006, which is, for example, a common public radio interface (CPRI).
  • a network interface 1006 which is, for example, a common public radio interface (CPRI).
  • CPRI common public radio interface
  • the network side device 1000 in this embodiment of the present invention also includes: instructions or programs stored in the memory 1005 and executable on the processor 1004.
  • the processor 1004 calls the instructions or programs in the memory 1005 to execute each of the steps shown in Figure 7
  • the method of module execution and achieving the same technical effect will not be described in detail here to avoid duplication.
  • Embodiments of the present application also provide a readable storage medium, with programs or instructions stored on the readable storage medium.
  • the program or instructions are executed by a processor, each process of the above channel access method embodiments 200-500 is implemented. And can achieve the same technical effect. To avoid repetition, they will not be described again here.
  • the processor is the processor in the terminal described in the above embodiment.
  • the readable storage medium includes computer readable storage media, such as computer read-only memory ROM, random access memory RAM, magnetic disk or optical disk, etc.
  • An embodiment of the present application further provides a chip.
  • the chip includes a processor and a communication interface.
  • the communication interface is coupled to the processor.
  • the processor is used to run network-side device programs or instructions to implement the above channel access.
  • Each process of Method Embodiments 200-500 can achieve the same technical effect. To avoid repetition, it will not be described again here.
  • chips mentioned in the embodiments of this application may also be called system-on-chip, system-on-a-chip, system-on-chip or system-on-chip, etc.
  • Embodiments of the present application also provide a computer program product.
  • the computer program product includes a processor, a memory, and a program or instructions stored on the memory and executable on the processor.
  • the program or instructions are used by the processor.
  • the embodiment of the present application also provides a communication system, including: a first communication device, the first communication device can be used to perform each process in the channel access method embodiments 200-500 as described above, and can achieve the same The technical effects will not be repeated here to avoid repetition.
  • the methods of the above embodiments can be implemented by means of software plus the necessary general hardware platform. Of course, it can also be implemented by hardware, but in many cases the former is better. implementation.
  • the technical solution of the present application can be embodied in the form of a computer software product that is essentially or contributes to the existing technology.
  • the computer software product is stored in a storage medium (such as ROM/RAM, disk , CD), including several instructions to cause a terminal (which can be a mobile phone, computer, server, air conditioner, or network device, etc.) to execute the methods described in various embodiments of this application.

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Abstract

本申请公开了一种信道接入方法、装置及通信设备，属于通信技术领域，本申请实施例的信道接入方法包括：第一通信设备在目标检测时间内确定目标SL信道上的第二通信设备的传输情况；所述第一通信设备根据所述第二通信设备的传输情况，确定接入或不接入所述目标SL信道；其中，所述第二通信设备是除所述第一通信设备之外的其他通信设备，所述第一通信设备和所述第二通信设备为用于发送SL数据的通信设备。

Description

信道接入方法、装置及通信设备
交叉引用
本发明要求在2022年04月25日提交中国专利局、申请号为202210442268.5、发明名称为“信道接入方法、装置及通信设备”的中国专利申请的优先权，该申请的全部内容通过引用结合在本发明中。
技术领域
本申请属于通信技术领域，具体涉及一种信道接入方法、装置及通信设备。
背景技术
旁链路(Sidelink，SL，也可称作或译为副链路、侧链路、边链路等)传输，是指终端(User Equipment，UE)之间可以直接在物理层上进行数据传输。
在SL的相关技术中，SL节点在非授权频谱上可通过先听后说(Listen-Before-Talk，LBT)的方式实现信道接入，如当检测到的能量低于门限值，则认为信道为空，反之则认为信道为忙，并在信道为空时进行信道接入。
但是，相关技术中提供的信道接入方案中，存在频谱资源利用效率低等问题，影响通信系统性能。
发明内容
本申请实施例提供一种信道接入方法、装置及通信设备，能够提高频谱资源利用效率，确保通信系统性能。
第一方面，提供了一种信道接入方法，包括：第一通信设备在目标检测时间内确定目标副链路SL信道上的第二通信设备的传输情况；所述第一通信设备根据所述第二通信设备的传输情况，确定接入或不接入所述目标SL信道；其中，所述第二通信设备是除所述第一通信设备之外的其他通信设备，所述第一通信设备和所述第二通信设备为用于发送SL数据的通信设备。
第二方面，提供了一种信道接入装置，应用于第一通信设备，包括：检测模块，用于在目标检测时间内确定目标副链路SL信道上的第二通信设备的传输情况；确定模块，用于根据所述第二通信设备的传输情况，确定接入或不接入所述目标SL信道；其中，所述第二通信设备是除所述第一通信设备之外的其他通信设备，所述第一通信设备和所述第二通信设备为用于发送SL数据的通信设备。
第三方面，提供了一种通信设备，该通信设备包括处理器和存储器，所述存储器存储可在所述处理器上运行的程序或指令，所述程序或指令被所述处理器执行时实现如第一方面所述的方法的步骤。
第四方面，提供了一种终端，包括处理器及通信接口，其中，所述通信接口和所述处理器耦合，所述处理器用于运行程序或指令，实现如第一方面所述的方法的步骤。
第五方面，提供了一种通信系统，包括：第一通信设备，所述第一通信设备可用于执行如第一方面所述的信道接入方法的步骤。
第六方面，提供了一种可读存储介质，所述可读存储介质上存储程序或指令，所述程序或指令被处理器执行时实现如第一方面所述的方法的步骤。
第七方面，提供了一种芯片，所述芯片包括处理器和通信接口，所述通信接口和所述处理器耦合，所述处理器用于运行程序或指令，实现如第一方面所述的方法的步骤。
第八方面，提供了一种计算机程序产品/程序产品，所述计算机程序/程序产品被存储在存储介质中，所述计算机程序/程序产品被至少一个处理器执行以实现如第一方面所述的方法的步骤。
本实施例中，第一通信设备在进行目标SL信道接入时，通过检测其他SL通信设备在目标SL信道上的传输情况，再根据其他SL通信设备在目标SL信道上的传输情况确定接入或不接入目标SL信道，由此，能够使得SL设备在目标SL信道进行频分复用，以增大目标SL信道的接入概率，提升目标SL信道的频谱利用率，确保通信系统性能。
附图说明
图1是本申请一示例性实施例提供的通信系统的结构示意图。
图2是本申请一示例性实施例提供的信道接入方法的流程示意图。
图3是本申请另一示例性实施例提供的信道接入方法的流程示意图。
图4a是本申请一示例性实施例提供的第一值和第二值的确定过程示意图。
图4b是本申请一示例性实施例提供的SL信道传输示意图。
图5是本申请另一示例性实施例提供的信道接入方法的流程示意图。
图6a是本申请一示例性实施例提供的目标检测时间内的SL传输示意图。
图6b是本申请另一示例性实施例提供的目标检测时间内的SL传输示意图。
图6c是本申请又一示例性实施例提供的目标检测时间内的SL传输示意图。
图6d是本申请又一示例性实施例提供的目标检测时间内的SL传输示意图。
图7是本申请一示例性实施例提供的信道接入装置的结构示意图。
图8是本申请一示例性实施例提供的通信设备的结构示意图。
图9是本申请一示例性实施例提供的终端的结构示意图。
图10是本申请一示例性实施例提供的网络侧设备的结构示意图。
具体实施方式
下面将结合本申请实施例中的附图，对本申请实施例中的技术方案进行清楚地描述，显然，所描述的实施例是本申请一部分实施例，而不是全部的实施例。基于本申请中的实 施例，本领域普通技术人员所获得的所有其他实施例，都属于本申请保护的范围。
本申请的说明书和权利要求书中的术语“第一”、“第二”等是用于区别类似的对象，而不用于描述特定的顺序或先后次序。应该理解这样使用的术语在适当情况下可以互换，以便本申请的实施例能够以除了在这里图示或描述的那些以外的顺序实施，且“第一”、“第二”所区别的对象通常为一类，并不限定对象的个数，例如第一对象可以是一个，也可以是多个。此外，说明书以及权利要求中“和/或”表示所连接对象的至少其中之一，字符“/”一般表示前后关联对象是一种“或”的关系。
值得指出的是，本申请实施例所描述的技术不限于长期演进型(Long Term Evolution，LTE)/LTE的演进(LTE-Advanced，LTE-A)系统，还可用于其他无线通信系统，诸如码分多址(Code Division Multiple Access，CDMA)、时分多址(Time Division Multiple Access，TDMA)、频分多址(Frequency Division Multiple Access，FDMA)、正交频分多址(Orthogonal Frequency Division Multiple Access，OFDMA)、单载波频分多址(Single-carrier Frequency-Division Multiple Access，SC-FDMA)和其他系统。本申请实施例中的术语“系统”和“网络”常被可互换地使用，所描述的技术既可用于以上提及的系统和无线电技术，也可用于其他系统和无线电技术。以下描述出于示例目的描述了新空口(New Radio，NR)系统，并且在以下大部分描述中使用NR术语，但是这些技术也可应用于NR系统应用以外的应用，如第6代(6th Generation，6G)通信系统。
图1示出本申请实施例可应用的一种无线通信系统的框图。无线通信系统包括终端11和网络侧设备12。其中，终端11可以是手机、平板电脑(Tablet Personal Computer)、膝上型电脑(Laptop Computer)或称为笔记本电脑、个人数字助理(Personal Digital Assistant，PDA)、掌上电脑、上网本、超级移动个人计算机(ultra-mobile personal computer，UMPC)、移动上网装置(Mobile Internet Device，MID)、增强现实(augmented reality，AR)/虚拟现实(virtual reality，VR)设备、机器人、可穿戴式设备(Wearable Device)、车载设备(VUE)、行人终端(PUE)、智能家居(具有无线通信功能的家居设备，如冰箱、电视、洗衣机或者家具等)、游戏机、个人计算机(personal computer，PC)、柜员机或者自助机等终端侧设备，可穿戴式设备包括：智能手表、智能手环、智能耳机、智能眼镜、智能首饰(智能手镯、智能手链、智能戒指、智能项链、智能脚镯、智能脚链等)、智能腕带、智能服装等。需要说明的是，在本申请实施例并不限定终端11的具体类型。网络侧设备12可以包括接入网设备或核心网设备，其中，接入网设备12也可以称为无线接入网设备、无线接入网(Radio Access Network,RAN)、无线接入网功能或无线接入网单元。接入网设备12可以包括基站、WLAN接入点或WiFi节点等，基站可被称为节点B、演进节点B(eNB)、接入点、基收发机站(Base Transceiver Station，BTS)、无线电基站、无线电收发机、基本服务集(Basic Service Set，BSS)、扩展服务集(Extended Service Set，ESS)、家用B节点、家用演进型B节点、发送接收点(Transmitting Receiving Point，TRP)或所述领域中其他某个合适的术语，只要达到相同的技术效果，所述基站不限于特定技术词汇，需要说明的是，在本申请实施例中 仅以NR系统中的基站为例进行介绍，并不限定基站的具体类型。
下面结合附图，通过一些实施例及其应用场景对本申请实施例提供的技术方案进行详细地说明。
如图2所示，为本申请一示例性实施例提供的信道接入方法200的流程示意图，该方法200可以但不限于由第一通信设备执行，具体可由安装于第一通信设备中的硬件和/或软件执行。本实施例中，所述方法200至少可以包括如下步骤。
S210，第一通信设备在目标检测时间内确定目标SL信道上的第二通信设备的传输情况。
其中，所述第一通信设备、所述第二通信设备均可以是终端或网络侧设备，如所述第一通信设备和所述第二通信设备均为终端，又如所述第一通信设备为终端、所述第二通信设备为网络侧设备等，在此不做限制。当然，在本实施例中，所述第二通信设备是除所述第一通信设备之外的其他通信设备，且所述第一通信设备和所述第二通信设备为用于发送SL数据的通信设备，即所述第一通信设备、第二通信设备也可以称为SL节点)。
所述目标检测时间也可以称作能量检测时间、能量检测机会、能量检测窗口等，至于所述目标检测时间的大小可以由协议约定、高层配置或网络侧配置实现。例如，在本实施例中，所述目标检测时间可以为感知时隙持续时间(sensing slot duration，如9us)、延迟时间(defer duration，如16us)、感知间隔(sensing interval，如25us)或感知时隙持续时间内的至少4us等。
值的注意的是，本实施例中，所述第一通信设备在检测第二通信设备的传输情况(或占用信道情况)时，可以针对一个目标SL信道进行，也可以针对多个目标SL信道进行。另外，所述第二通信设备的传输情况可以包括存在所述第二通信设备对应的SL传输，或不存在所述第二通信设备对应的SL传输，其中，所述SL传输包括当前SL传输、预留SL传输、潜在SL传输、预期SL传输中的至少一项。
此外，所述第一通信设备检测所述第二通信设备的传输情况的过程可以理解为LBT过程，或空闲信道评估(Clear Channel Assessment，CCA)过程。相应的，S220中提及的所述第一通信设备根据所述第二通信设备的传输情况确定接入或不接入所述目标SL信道，也可以理解为针对所述目标SL信道的LBT(或CCA)成功或未成功。
S220，所述第一通信设备根据所述第二通信设备的传输情况，确定接入或不接入目标SL信道。
本实施例中，第一通信设备在进行目标SL信道接入时，通过检测其他SL通信设备在目标SL信道上的传输情况，再根据其他SL通信设备在目标SL信道上的传输情况确定接入或不接入目标SL信道，由此，能够使得SL设备在目标SL信道进行频分复用，以增大目标SL信道的接入概率，提升目标SL信道的频谱利用率，确保通信系统性能。
如图3所示，为本申请一示例性实施例提供的信道接入方法300的流程示意图，该方法300可以但不限于由第一通信设备执行，具体可由安装于第一通信设备中的硬件和/或软件执行。本实施例中，所述方法300至少可以包括如下步骤。
S310，第一通信设备在目标检测时间内确定目标SL信道上的第二通信设备的传输情况。
可以理解，S310的实现过程除了可以参照方法实施例200中的相关描述之外，在一种实现方式中，请再次参阅图3，S310的实现过程可以包括S311-S313，内容如下。
S311，所述第一通信设备基于所述目标检测时间接收目标副链路控制信息(Sidelink Control Information，SCI)。
其中，可以理解的是，在本实施例中，所述第二通信设备可以是所述目标SCI的发送端，当然，所述第二通信设备可以为多个，对应的，所述目标SCI也可以为多个。基于此，在一种实现方式中，所述目标SCI可以包括以下(11)-(16)至少一项：
(11)所述目标检测时间内接收到的SCI。
(12)所述目标检测时间之前或之后的第一时段内接收到的SCI。其中，所述第一时段的大小可以由协议约定、高层配置或网络侧配置实现。例如，所述第一时段可以包括一个时隙(slot)等。
(13)满足第一条件的SCI，所述第一条件包括SCI所指示的解调参考信号(Demodulation Reference Signal，DMRS)的参考信号接收功率(reference signal received power，RSRP)或能量值超过第一阈值。
(14)目标检测频域(或LBT带宽)内接收到的SCI，所述目标检测频域与所述目标SL信道对应。
(15)在目标资源池上接收到的SCI，所述目标资源池与所述第一通信设备和/或所述第二通信设备对应。
(16)在目标资源上接收到的SCI，所述目标资源与所述第一通信设备和/或所述第二通信设备对应。
当然，至于所述目标SCI实际包括前述(11)-(16)中的哪一个，可以由协议约定、高层配置或网络侧配置实现，在此不做限制。
S312，所述第一通信设备根据所述目标SCI确定所述第二通信设备对应的信道的时频资源信息。
其中，所述第二通信设备的对应的信道可以是物理副链路控制信道(Physical SideLink Control Channel，PSCCH)、物理副链路共享信道(Physical SideLink Shared Channel，PSSCH)、PSCCH-DMRS、PSSCH-DMRS、物理副链路反馈信道(Physical SideLink Feedback Channel，PSFCH)、自动增益控制(Automatic Gain Control，AGC)、间隔(GAP)等。基于此，所述第二通信设备的对应的信道的时频资源信息可以为所述目标SCI所指示的时域的时隙(slot)、符号(Symbol)、起始和长度指示值(Start and length indicator value，SLIV)等，和/或，所述第二通信设备对应的信道的时频资源信息也可以为所述目标SCI所指示的子信道(sub-channel)、物理资源块(Physical Resource Block，PRB)等，在此不做限制。
S313，所述第一通信设备根据所述第二通信设备对应的信道的时频资源信息确定所述第二通信设备的传输情况。
所述第一通信设备根据所述第二通信设备对应的信道的时频资源信息确定目标SL信道上存在所述第二通信设备对应的SL传输，或不存在所述第二通信设备对应的SL传输。
值得注意的是，在一种实现方式中，所述第一通信设备在进行第二通信设备的传输情况的检查之前，也可以先确定目标SL信道是否专用于SL通信设备，如在所述目标SL信道对应的频谱不是SL通信设备的专用频谱的情况下，所述第一通信设备可以执行所述在目标检测时间内确定目标SL信道上的第二通信设备的传输情况的步骤，又如在所述目标SL信道对应的频谱是SL通信设备的专用频谱的情况下，不需要进行LBT，并确定所述目标SL信道为空，从而节省终端能耗，提高信道接入效率。其中，所述SL通信设备至少包括所述第一通信设备和所述第二通信设备，所述目标SL信道对应的频谱是SL通信设备的专用频谱也可以理解为没有其他共存系统(如WIFI)。
S320，所述第一通信设备根据所述第二通信设备的传输情况，确定接入或不接入目标SL信道。
其中，所述第二通信设备是除所述第一通信设备之外的其他通信设备，所述第一通信设备和所述第二通信设备为用于发送SL数据的通信设备。
可以理解，S320的实现过程除了可以参照方法实施例200中的相关描述之外，在一种实现方式中，请再次参阅图3，S320的实现过程可以包括S321-S323，内容如下。
S321，所述第一通信设备根据第一值和第二值的差值确定目标值。
其中，所述第一值可以理解为所述第一通信设备在所述目标SL信道上检测到的总能量或总功率。本实施例中，所述第一值可以是所述第一通信设备根据在所述目标检测时间内检测到的接收信号强度指示(Received Signal Strength Indication，RSSI)、在所述目标检测时间内检测到的能量检测值、承载所述目标SCI的PSCCH的RSSI、所述SCI指示的PSSCH的RSSI中的任一项确定。
所述第二值可以理解为所述第一通信设备在所述目标SL信道上检测到的第二通信设备的进行SL传输的能量或功率。在本实施例中，所述第二值可以是所述第一通信设备根据所述第二通信设备的传输情况或所述目标SCI所指示的DMRS的RSRP确定。
一种实现方式中，所述第一通信设备根据在所述目标检测时间内的第二通信设备的传输情况，确定所述第二值的过程可以包括：在所述第二通信设备的传输情况为所述目标检测时间内存在所述第二通信设备对应的SL传输的情况下，所述第二值为特定值。其中，所述特定值可以为协议约定或网络侧配置的特定值。
在所述第二通信设备的传输情况为所述目标检测时间内不存在所述的第二通信设备对应的SL传输的情况下，所述第二值为0。
另一种实现方式中，所述第一通信设备根据所述目标SCI所指示的DMRS的RSRP，确定第二值的过程可以包括：所述第一通信设备根据目标频域资源信息以及目标RSRP，确定所述第二值；其中，所述目标频域资源信息可以包括所述目标SCI所指示的DMRS的频域资源信息、承载所述目标SCI的PSSCH的频域资源信息、承载所述目标SCI的PSCCH 的频域资源信息中的至少一项。
所述目标RSRP可以包括所述目标SCI所指示的DMRS的RSRP。其中，在所述目标SCI为多个时，所述目标RSRP为多个目标SCI所指示的DMRS的RSRP集合。
另外值的注意的是，考虑到所述目标SCI所指示的DMRS的符号数可以为1个或多个，那么，在所述SCI所指示的DMRS的符号数为多个时，即在所述目标SCI指示的DMRS的符号数大于1的情况下，所述目标SCI所指示的DMRS的RSRP可以包括以下(21)-(26)中的任一项。
示例性的，假设所述第二通信设备为多个，如SL UE 1、SL UE 2、SL UE 3……，其中，SL UE 1对应的目标SCI所指示的DMRS的RSRP为RSRP1、SL UE 2对应的目标SCI所指示的DMRS的RSRP为RSRP2、SL UE 3对应的目标SCI所指示的DMRS的RSRP为RSRP3……，SL UE 1对应的目标SCI所指示的DMRS的频域资源信息为RE1、SL UE 2对应的目标SCI所指示的DMRS的频域资源信息为RE2、SL UE 3对应的目标SCI所指示的DMRS的频域资源信息为RE3、那么，第二值可以为：RSRP1*RE1(RSRP1对应的资源单元(RE)数目)+RSRP2*RE2(RSRP2对应的RE数目)+RSRP3*RE3(RSRP3对应的RE数目)+……。
(21)所述目标SCI所指示的预设符号上的DMRS对应的RSRP。其中，所述预设符号可以由协议约定或高层配置等实现。
(22)所述目标SCI所指示的DMRS中各符号对应的RSRP的平均值。
(23)所述目标SCI所指示的DMRS中各符号对应的RSRP的最大值。
(24)所述目标SCI所指示的DMRS中各符号对应的RSRP的最小值。
(25)针对所述目标SCI所指示的DMRS，距离所述目标检测时间中的开始时间或结束时间最近的时域位置对应的DMRS的RSRP。
(26)针对所述目标SCI所指示的DMRS，距离所述目标检测时间中的开始时间或结束时间最远的时域位置对应的DMRS的RSRP。
可以理解，前述(21)-(26)中的DMRS也可以为PSCCH或PSSCH对应的DMRS，在此不做限制。
一种实现方式中，在所述第二值是所述第一通信设备根据所述目标SCI所指示的DMRS的RSRP确定时，所述目标检测时间与承载所述目标SCI的所述PSSCH或PSCCH的传输时间至少部分重叠，或者，所述目标检测时间与所述目标SCI所指示的PSSCH或PSCCH的传输时间至少部分重叠，在此不做限制。
此外，需要注意的是，所述第一通信设备在基于所述值和所述第二值计算所述目标值时，所述第一值和所述第二值可以是基于相同的时间单元得到，如一个symbol等。
基于此，一种实现方式中，考虑到所述目标检测时间中可能存在多个目标SL信道，对此，所述第一通信设备在计算目标值时，可根据结合目标SL信道的类型进行目标值的确定。
例如，在所述目标检测时间对应有多个所述目标SL信道、且多个所述目标SL信道为 同一类型的信道的情况下，所述第一通信设备根据第三值和第四值的差值确定所述目标值。其中，所述第三值是多个第一值的平均值，所述第一值与所述目标SL信道一一对应，或者，所述第三值是多个所述目标SL信道中的指定SL信道对应的第一值，或者，所述第三值是多个所述目标SL信道中的任一SL信道对应的第一值。所述第四值是多个第二值的平均值所述第二值与所述目标SL信道一一对应，或者，所述第四值是多个所述目标SL信道中的指定SL信道对应的第二值，或者，所述第四值是多个所述目标SL信道中的任一SL信道对应的第二值。
又例如，在所述目标检测时间对应有多个所述目标SL信道、且多个所述目标SL信道分别对应不同类型的信道的情况下，所述第一通信设备根据第五值和第六值的差值确定所述目标值；其中，所述第五值是多个第一值的平均值，所述第一值与所述目标SL信道一一对应，或者，所述第五值是多个所述目标SL信道中的指定SL信道对应的第一值，或者，所述第五值是多个所述目标SL信道中的任一SL信道对应的第一值，或者，所述第五值是多个所述目标SL信道中传输时间最早的SL信道对应的第一值，或者，所述第五值是多个所述目标SL信道中传输时间最晚的SL信道对应的第一值。
所述第六值是多个所述目标SL信道中的指定SL信道对应的第二值，或者，所述第六值是多个所述目标SL信道中的任一SL信道对应的第二值，或者，所述第六值是多个所述目标SL信道中传输时间最早的SL信道对应的第二值，或者，所述第六值是多个所述目标SL信道中传输时间最晚的SL信道对应的第二值。
值的注意的是，在前述描述的基础上可知，本实施例中根据第一值和第二值的差值确定目标值，可以理解为：如果SL UE(即第一通信设备)检测到在目标检测时间(如时隙)上存在多个其他SL UE(即第二通信设备)的SL传输，那么，所述第一通信设备在该目标检测时间进行CCA时，可以从检测到的总能量(即第一值)中去掉所述多个其他SL UE发送SL的能量(即第二值)，再基于去除后的能量评估信道状态(前述过程简称基于SL传输检测的CCA)，从而使得在同一时间内可以允许一个或多个SL通信设备接入目标SL信道，提高第一通信设备接入SL信道的概率，同时解决相关技术中存在的同一时间内只有一个SL通信设备能接入信道，导致资源利用率较低，传输数据率较低的问题。
例如，在相关技术中，当20MHz内不存在或存在能量较低的WIFI用户，且检测到的能量主要来自SL通信设备，而该SL通信设备只占用的20MHz内的部分频谱，则会有部分频谱处于空置状态，降低了频谱利用率，对此，通过采用本实施例中提供的信道接入方法，能够使得第一通信设备在非授权信道接入的过程中减去接收到的第二通信设备的能量，再和第一门限值进行比较，确定是否可以进行信道接入，能够在不影响不同通信系统间的公平性的基础上，增大频谱利用效率，确保通信系统的性能。
S322，所述第一通信设备根据所述目标值确定目标SL信道的信道状态。
一种实现方式中，所述第一通信设备根据所述目标值确定所述目标SL信道的信道状态时，如果所述目标值大于第一门限值，那么所述第一通信设备可确定所述目标SL信道的信 道状态为空；即所述目标SL信道上没有被占用，或所述目标SL信道上不存在第二通信设备进行SL传输。
如果所述目标值小于第一门限值，那么所述第一通信设备确定所述目标SL信道为忙，即所述目标SL信道被占用，或所述目标SL信道上存在第二通信设备进行SL传输。
可选的，所述第一门限值与所述目标SL信道对应的目标检测频域(或LBT带宽)相关。例如，所述第一门限值可以为“-72+10*log10(BWMHz/20MHz)”，其中，BW为所述目标检测频域的带宽。
S323，所述第一通信设备根据所述目标SL信道的信道状态，确定接入或不接入所述目标SL信道。
一种实现方式中，为了提高信道状态的判断准确性，所述第一通信设备根据所述第二通信设备的传输情况，确定接入或不接入目标副链路SL信道的过程可以包括以下两种方式中至少一项。
方式1：所述第一通信设备在进行了至少N次所述在目标检测时间内确定目标SL信道上的第二通信设备的传输情况的步骤、且根据所述第二通信设备的传输情况确定所述目标SL信道为空的次数大于第二阈值的情况下，确定接入所述目标SL信道，其中，N为大于或等于1的整数。
所述第二阈值与LBT的类型和/或LBT的优先级相关。例如，如果所述LBT的类型为type1，则第二阈值为N，LBT的类型为type2，则第二阈值为1。又例如，如果LBT的优先等级为1(最高优先级)，则第二阈值为1，LBT的优先等级为4(最低优先级)，则第二阈值为N。
方式2：在第一计数器的计数值为0之后，所述第一通信设备在进行了M次所述在目标检测时间内确定目标SL信道上的第二通信设备的传输情况的步骤、且根据所述第二通信设备的传输情况确定所述目标SL信道为空的次数大于第三阈值的情况下，确定接入目标SL信道传输，其中，所述第一计数器用于指示所述第一通信设备执行所述在目标检测时间内确定目标SL信道上的第二通信设备的传输情况的步骤的次数，M为大于或等于1的整数。
所述第三阈值与LBT的类型和/或LBT的优先级相关。例如，如果所述LBT的类型为type1，则第三阈值为M，LBT的类型为type2，则第三阈值为1。又例如，如果LBT的优先等级为1(最高优先级)，则第三阈值为1，如果LBT的优先等级为4(最低优先级)，则第三阈值为M。
可以理解的是，对于前述的LBT的类型，其中，在非授权频谱(NewRadio in Unlicensed Spectrum，NRU)中常用的LBT的类型(type)所述LBT的类型(type)可以分为Type1、Type2A、Type2B和Type2C。其中，Type1LBT是基于回退(back-off)的信道侦听机制，当传输节点侦听到信道为忙时，进行回退，继续做侦听，直到侦听到信道为空。Type2C是发送节点不做LBT，即no LBT或者即时传输(immediate transmission)。Type2A和Type2B LBT是单时隙(one-shot)LBT，即节点在传输前做一次LBT，信道为空则进行传输，信 道为忙则不传输。区别是Type2A在25us内做LBT，适用于在共享信道占用时间(channel occupancy time，COT)时，两个传输之间的Gap大于等于25us。而Type2B在16us内做LBT，适用于在共享COT时，两个传输之间的Gap等于16us。此外，还有Type2LBT，适用于授权频谱辅助接入(License Assisted Access，LAA)、增强的LAA(enhanced LAA，eLAA)、进一步增强的(further enhanced LAA，FeLAA)等，当共享COT时，两个传输之间的Gap大于等于25us，eNB和UE可以采用Type 2LBT。此外，在频率范围(frequency range)2-2中，LBT的类型有Type1、Type2和Type3。Type1是基于回退的信道侦听机制，Type2是one-shotLBT，在8us内做5us的LBT，Type3是不做LBT。
基于前述信道接入方法的描述，下面结合示例1和示例2对本实施例提供的信道接入方法的实现过程做进一步介绍，内容如下。
示例1
请结合参阅图4a，假设所述第一通信设备检测到第二通信设备发送的目标SCI，如图4a中的SCI 1，那么所述第一值和所述第二值的确定如下。
Case1：所述第一通信设备可以根据符号1的PSCCH的的DMRS的RSRP及符号1的PSCCH的RE数目确定第二值，以及确定第一值为符号1的RSSI。
Case2：所述第一通信设备根据符号2的PSCCH的DMRS的RSRP及符号2的PSCCH的RE数目确定第二值，以及确定第一值为符号2的RSSI。
Case3：所述第一通信设备根据符号3发PSSCH的DMRS的RSRP及符号3的PSSCH的RE数目确定第二值，以及确定第一值为符号3的RSSI。
Case4：所述第一通信设备根据符号3的PSSCH的DMRS的RSRP及符号3的PSSCH的RE数目确定第二值，确定第一值为符号4的RSSI。
Case5：所述第一通信设备根据符号3的PSSCH的DMRS的RSRP及符号3的PSSCH的RE数目确定第二值，确定第一值为符号5的RSSI。
Case6：所述第一通信设备根据符号8的PSSCH的DMRS的RSRP及符号8的PSSCH的RE数目确定第二值，确定第一值为符号8的RSSI。
Case7：所述第一通信设备根据符号8的PSSCH的DMRS的RSRP及符号8的PSSCH的RE数目确定第二值，确定第一值为符号10的填充Gap的PSSCH对应的RSSI，或根据总能量检测，确定第一值为符号10的RSSI。
Case8：所述第一通信设备根据总能量检测，确定第一值为符号11的RSSI，第二值为0。
需要说明的是，在图4a中，PSCCH/1st SCI在符号1、2上传输、2nd SCI在符号3、4上(即PSSCH)传输，PSSCH在符号1到符号12。另外，符号1和符号2上的PSSCH和PSCCH可以通过频分复用的方式传输。需要注意的是，图4a中只示出了1个PRB的情形，但本实施例不限于1个PRB的情形。
示例2
如图4b所示，当所述第一通信设备在slot n的位置进行LBT，其开始位置为符号8，LBT带宽为20MHz，根据目标检测时间Tsl所在的slot的位置确定目标SCI的接收，该slot内接收了SCI1。根据SCI1以及对应的资源池配置的指示确定第二通信设备对应的信道(如PSSCH、PSCCH、PSFCH、AGC、GAP、DMRS，的时频资源信息(如时频资源位置)。该部分带宽(Bandwidth Part，BWP)的子载波间隔(Subcarrier Spacing，SCS)为15KHz，每个symbol的长度大约为71us,因此当Tsl＝9us,一个目标检测时间可以包含在一个正交频分复用(Orthogonal frequency division multiplex，OFDM)符号内。
根据SCI1对应的PSSCHDMRS的RSRP1，RSRP1为符号8的RSRP，根据DMRS的RE密度和PSSCH的RE密度，折算得到符号8的PSSCH的接收功率，用RSSI(即第一值)减去PSSCH(当确定当前能量检测时间内有信道传输时，第二功率/能量值为协议预定义或网络配置的特定值；否则为0)的接收功率(即第二值)，得到目标值，将目标值和第一门限值进行比较，若目标值小于第一门限值，则本次信道检测为空。当本次信道检测为空已经满足LBT成功的条件，则该第一通信设备可以接入目标SL信道，以及在20MHz的目标SL信道内的其他配置资源池进行SL发送。另外，图4b中的PTRS为相位追踪参考信号(Phase-tracking reference signal)。
本实施例中，第一通信设备根据目标SCI获取第二通信设备占用信道的信息，从而检测出每个第二通信设备在LBT带宽内的能量，第一通信设备在非授权信道接入的过程中减去接收到的第二通信设备的能量，再和第一门限值进行比较，确定是否可以进行信道接入，能够在在不影响不同通信系统间的公平性的基础上，增大频谱利用效率，确保通信系统的性能。
如图5所示，为本申请一示例性实施例提供的信道接入方法500的流程示意图，该方法500可以但不限于由第一通信设备执行，具体可由安装于第一通信设备中的硬件和/或软件执行。本实施例中，所述方法500至少可以包括如下步骤。
S510，在所述目标检测时间内均是Gap的情况下，所述第一通信设备执行S520或S530。
其中，所述目标检测时间内均是Gap可以由协议约定或高层配置实现，也可以是所述第一通信设备通过LBT过程确定，在此不做限制。
可以理解，在Rel-16/Rel-17SL中，PSCCH/PSSCH slot和PSCCH/PSSCH slot间，以及PSCCH/PSSCH和PSFCH间，以及PSFCH和PSCCH/PSSCH间均存在Gap，基于此，如果所述第一通信设备假设该Gap上没有SL传输，那么所述第一通信设备在该Gap进行CCA的时候，并不考虑去掉其他SL UE(如第二通信设备)发送SL的能量(简称为“基于总能量检测的CCA”)。其中，所述第一通信设备进行CCA的形式可以如S520，即对于PSCCH/PSSCH上的CCA，由于第一通信设备能够识别PSCCH/PSSCH传输，所以第一通信设备执行基于SL传输检测的CCA。而对于Gap上的CCA，所述第一通信设备可以执行基于总能量检测的CCA，如S530，关于S520和S530的实现过程可以如下。
S520，在所述Gap用于传输PSSCH和/或PSCCH的情况下，所述第一通信设备在目标 检测时间内确定目标SL信道上的第二通信设备的传输情况，以及根据所述第二通信设备的传输情况，确定接入或不接入目标SL信道。其中，所述第二通信设备是除所述第一通信设备之外的其他通信设备，所述第一通信设备和所述第二通信设备为用于发送SL数据的通信设备。
其中，所述Gap是否用于PSSCH和/或PSCCH可以由协议约定或高层配置等实现。此外可以理解，关于S520中提及的“目标检测时间内检测第二通信设备的传输情况，以及根据所述第二通信设备的传输情况，确定接入或不接入目标SL信道”的实现过程可参照方法实施例200和/或300中的相关描述，为避免重复，在此不再赘述。
S530，在所述Gap不能用于传输PSSCH和/或PSCCH的情况下，所述第一通信设备基于所述目标检测时间在所述Gap上确定第三通信设备的传输情况，以及根据所述第三通信设备的传输情况确定接入或不接入目标SL信道，其中，所述第三通信设备是除所述第一通信设备之外的其他通信设备，即所述第三通信设备可以是SL通信设备或非SL通信设备，在此不做限制。
如图6a所示，由于Gap前的SL传输可能会延迟到Gap内，如果第一通信设备在Gap的前一部分进行基于总能量检测的CCA，很大概率导致CCA失败，所以，所述第一通信设备可以执行(31)-(32)中的任一项。
(31)所述第一通信设备在所述Gap中的第二时段内暂停执行所述LBT，以及在所述Gap中除所述第二时段之外的其他时段上进行LBT，得到所述第三通信设备的传输情况。
例如图6b所示，所述第一通信设备在Gap前一部分(即第二时段)暂停CCA，暂停时间由UE实现决定/(预)配置决定/协议约定。其中，所述第二时段与所述SL传输的延迟时间大小相关。或者，所述第二时段由所述第一通信设备决定或(预)配置决定或协议约定等实现，在此不做限制。
(32)所述第一通信设备在所述Gap对应的第三时段内执行LBT，得到所述第三通信设备的传输情况，其中，所述第三时段位于所述第三通信设备对应的SL传输之前。可选的，所述第三时段可以是通过对所述Gap进行延长得到，或者，所述第三时段是所述Gap中没有SL传输的部分Gap等，由此确保所述第三时段中没有SL传输。
例如，所述第一通信设备在所述第三通信设备对应的SL传输之前的Gap(即第三时段，例如25us)上进行CCA，直到所述第三通信设备对应的SL传输开始。所述CCA为基于总能量检测的CCA。
可选的，如图6c所示，PSCCH/PSSCH和PSCCH/PSSCH间、PSCCH/PSSCH和PSFCH间、或PSFCH和PSCCH/PSSCH之间的new Gap(即前述的第三时段)可以由协议约定或(预)配置，以保证new Gap内没有延迟的SL传输。所述new Gap长度可以大于1个symbol，所述new Gap可以位于slot开始位置(如图6c中的Slot n+1的开始位置)或者结束位置。需要注意的是，图6c中的legacy Gap即前述目标检测时间内的Gap。
若new Gap个数大于1，第一通信设备也可以在某些预设new Gap上暂停CCA，暂停 时间由第一通信设备实现决定/(预)配置决定/协议约定。(例如在PSCCH/PSSCH结束后的一个/N个Gap symbol上暂停CCA，在PSFCH结束后的一个/N个Gap symbol上暂停CCA)
此外，在一种实现方式中，对于Gap上的CCA，所述第一通信设备也可以如图6d所示，如果检测到其他SL UE的PSCCH/PSSCH传输会填充(filling)某个Gap，那么。所述第一通设备在该Gap上执行基于SL传输检测的CCA时，可以去除填充Gap的SL传输的能量(注意：填充Gap的形式不限，可以是重复发送PSSCH/发送PSFCH等形式填充Gap)。
本实施例中，第一通信设备根据目标检测时间的Gap信息，进行信道接入的确定，能够提高信道接入过程的灵活性。
本申请实施例提供的信道接入方法200-500，执行主体可以为信道接入装置。本申请实施例中以信道接入装置执行信道接入方法200-500为例，说明本申请实施例提供的信道接入装置。
如图7所示，为本申请一示例性实施例提供的信道接入装置700的结构示意图，该装置700可以包括：检测模块710，用于在目标检测时间内确定目标SL信道上的第二通信设备的传输情况；确定模块720，用于根据所述第二通信设备的传输情况，确定接入或不接入目标副链路SL信道；其中，所述第二通信设备是除所述第一通信设备之外的其他通信设备，所述第一通信设备和所述第二通信设备为用于发送SL数据的通信设备。
可选的，所述第二通信设备的传输情况包括存在所述第二通信设备对应的SL传输，或不存在所述第二通信设备对应的SL传输，其中，所述SL传输包括当前SL传输、预留SL传输、潜在SL传输、预期SL传输中的至少一项。
可选的，所述检测模块710在目标检测时间内确定目标SL信道上的第二通信设备的传输情况的步骤，包括：基于所述目标检测时间接收目标副链路控制信息SCI；根据所述目标SCI确定所述第二通信设备对应的信道的时频资源信息；根据所述第二通信设备对应的信道的时频资源信息确定所述第二通信设备的传输情况。
可选的，所述目标SCI包括以下至少一项：所述目标检测时间内接收到的SCI；所述目标检测时间之前或之后的第一时段内接收到的SCI；满足第一条件的SCI，所述第一条件包括SCI所指示的解调参考信号DMRS的参考信号接收功率RSRP或能量值超过第一阈值；目标检测频域内接收到的SCI，所述目标检测频域与所述目标SL信道对应；在目标资源池上接收到的SCI，所述目标资源池与所述第一通信设备和/或所述第二通信设备对应；在目标资源上接收到的SCI，所述目标资源与所述第一通信设备和/或所述第二通信设备对应。
可选的，所述确定模块720根据所述第二通信设备的传输情况，确定接入或不接入所述目标SL信道的步骤，包括：根据第一值和第二值的差值确定目标值，其中，所述第一值是所述第一通信设备根据在所述目标检测时间内检测到的接收信号强度指示RSSI、在所述目标检测时间内检测到的能量检测值、承载所述目标SCI的PSCCH的RSSI、所述SCI指示的PSSCH的RSSI中的任一项确定，所述第二值是所述第一通信设备根据所述第二通信设备的传输情况或所述目标SCI所指示的DMRS的RSRP确定；根据所述目标值确定目标 SL信道的信道状态；根据所述目标SL信道的信道状态，确定接入或不接入所述目标SL信道。
可选的，在所述第二通信设备的传输情况为所述目标检测时间内存在所述第二通信设备对应的SL传输的情况下，确定所述第二值为特定值，所述特定值由协议约定或高层配置；在所述第二通信设备的传输情况为所述目标检测时间内不存在所述的第二通信设备对应的SL传输的情况下，确定所述第二值为0。
可选的，所述第二值是根据目标频域资源信息以及目标RSRP确定；其中，所述目标频域资源信息包括所述目标SCI所指示的DMRS的频域资源信息、承载所述目标SCI的物理副链路共享信道PSSCH的频域资源信息、承载所述目标SCI的物理副链路控制信道PSCCH的频域资源信息中的至少一项；所述目标RSRP包括所述目标SCI所指示的DMRS的RSRP。
可选的，所述目标SCI所指示的DMRS的RSRP，包括：在所述目标SCI指示的DMRS的符号数大于1的情况下，所述目标SCI所指示的DMRS的RSRP包括以下任一项：所述目标SCI所指示的预设符号上的DMRS对应的RSRP；所述目标SCI所指示的DMRS中各符号对应的RSRP的平均值；所述目标SCI所指示的DMRS中各符号对应的RSRP的最大值；所述目标SCI所指示的DMRS中各符号对应的RSRP的最小值；针对所述目标SCI所指示的DMRS，距离所述目标检测时间中的开始时间或结束时间最近的时域位置对应的DMRS的RSRP；针对所述目标SCI所指示的DMRS，距离所述目标检测时间中的开始时间或结束时间最远的时域位置对应的DMRS的RSRP。
可选的，所述目标检测时间与所述PSSCH或PSCCH的传输时间至少部分重叠。
可选的，所述确定模块720根据第一值和第二值的差值确定目标值的步骤，包括以下至少一项：在所述目标检测时间对应有多个所述目标SL信道、且多个所述目标SL信道为同一类型的信道的情况下，根据第三值和第四值的差值确定所述目标值；在所述目标检测时间对应有多个所述目标SL信道、且多个所述目标SL信道分别对应不同类型的信道的情况下，根据第五值和第六值的差值确定所述目标值；其中，所述第三值是多个第一值的平均值，所述第一值与所述目标SL信道一一对应，或者，所述第三值是多个所述目标SL信道中的指定SL信道对应的第一值，或者，所述第三值是多个所述目标SL信道中的任一SL信道对应的第一值；所述第四值是多个第二值的平均值，所述第二值与所述目标SL信道一一对应，或者，所述第四值是多个所述目标SL信道中的指定SL信道对应的第二值，或者，所述第四值是多个所述目标SL信道中的任一SL信道对应的第二值；所述第五值是多个第一值的平均值，所述第一值与所述目标SL信道一一对应，或者，所述第五值是多个所述目标SL信道中的指定SL信道对应的第一值，或者，所述第五值是多个所述目标SL信道中的任一SL信道对应的第一值，或者，所述第五值是多个所述目标SL信道中传输时间最早的SL信道对应的第一值，或者，所述第五值是多个所述目标SL信道中传输时间最晚的SL信道对应的第一值；所述第六值是多个所述目标SL信道中的指定SL信道对应的第二值，或者，所述第六值是多个所述目标SL信道中的任一SL信道对应的第二值，或者，所述第 六值是多个所述目标SL信道中传输时间最早的SL信道对应的第二值，或者，所述第六值是多个所述目标SL信道中传输时间最晚的SL信道对应的第二值。
可选的，所述确定模块720根据所述目标值确定所述目标SL信道的信道状态的步骤，包括：在所述目标值大于第一门限值的情况下，确定所述目标SL信道为空；在所述目标值小于第一门限值的情况下，确定所述目标SL信道为忙；其中，所述第一门限值与所述目标SL信道对应的目标检测频域相关。
可选的，所述确定模块720根据所述第二通信设备的传输情况，确定接入或不接入目标副链路SL信道的步骤，包括以下至少一项：在进行了N次所述在目标检测时间内确定目标路SL信道上的第二通信设备的传输情况的步骤、且根据所述第二通信设备的传输情况确定所述目标SL信道为空的次数大于第二阈值的情况下，确定接入所述目标SL信道，其中，N为大于或等于1的整数；在第一计数器的计数值为0之后，在进行了M次所述在目标检测时间内确定目标SL信道上的第二通信设备的传输情况的步骤、且根据所述第二通信设备的传输情况确定所述目标SL信道为空的次数大于第三阈值的情况下，确定接入目标SL信道传输，其中，所述第一计数器用于指示所述第一通信设备执行所述在目标检测时间内确定目标SL信道上的第二通信设备的传输情况的步骤的次数，M为大于或等于1的整数。
可选的，所述第二阈值与LBT的类型和/或LBT的优先级相关；和/或，所述第三阈值与LBT的类型和/或LBT的优先级相关。
可选的，在所述目标检测时间内均是Gap、且所述Gap用于传输PSSCH和/或PSCCH的情况下，所述检测模块710执行所述在目标检测时间内确定目标SL信道上的第二通信设备的传输情况，以及所述确定模块720根据所述第二通信设备的传输情况，确定接入或不接入目标SL信道的步骤；和/或，在所述目标检测时间内均是Gap、且所述Gap不能用于传输PSSCH和/或PSCCH的情况下，所述检测模块710还用于基于所述目标检测时间在所述Gap上确定第三通信设备的传输情况，以及所述确定模块720还用于根据所述第三通信设备的传输情况确定接入或不接入目标SL信道，其中，所述第三通信设备是除所述第一通信设备之外的其他通信设备。
可选的，所述检测模块710基于所述目标检测时间在所述Gap上确定第三通信设备的传输情的步骤，包括以下任一项：在所述Gap中的第二时段内暂停执行所述LBT，以及在所述Gap中除所述第二时段之外的其他时段上进行LBT，得到所述第三通信设备的传输情况，其中，所述第二时段与所述SL传输的延迟时间大小相关；在所述Gap对应的第三时段内执行LBT，得到所述第三通信设备的传输情况，其中，所述第三时段位于所述第三通信设备对应的SL传输之前。
可选的，所述检测模块710用于在所述目标SL信道对应的频谱不是SL通信设备的专用频谱的情况下，执行所述在目标检测时间内确定目标SL信道上的第二通信设备的传输情况的步骤，其中，所述SL通信设备至少包括所述第一通信设备和所述第二通信设备。
本申请实施例中的信道接入装置700可以是电子设备或网络侧设备，在所述信道接入 装置700为电子设备时，可以是具有操作系统的电子设备，也可以是电子设备中的部件，例如集成电路或芯片。该电子设备可以是终端。示例性的，终端可以包括但不限于上述所列举的终端11的类型。在所述信道接入装置700为网络侧设备时，所述网络侧设备可以为服务器、网络附属存储器(Network Attached Storage，NAS)等，示例性的，网络侧设备可以包括但不限于上述所列举的网络侧设备12的类型，本申请实施例不作具体限定。
本申请实施例提供的信道接入装置700能够实现图2至图5的方法实施例实现的各个过程，并达到相同的技术效果，为避免重复，这里不再赘述。
可选的，如图8所示，本申请实施例还提供一种通信设备800，包括处理器801和存储器802，存储器802存储有可在所述处理器801上运行的程序或指令，例如，该通信设备800为终端时，该程序或指令被处理器801执行时实现上述方法实施例200-500的各个步骤，且能达到相同的技术效果。该通信设备800为网络侧设备时，该程序或指令被处理器801执行时实现上述方法实施例200-500的各个步骤，且能达到相同的技术效果，为避免重复，这里不再赘述。
一种实现方式中，在所述通信设备800为终端时，该终端可以包括处理器和通信接口，所述通信接口和所述处理器耦合，所述处理器用于运行程序或指令，实现如方法实施例200-500中所述的方法的步骤。该终端实施例是与上述终端侧方法实施例对应的，上述方法实施例的各个实施过程和实现方式均可适用于该终端实施例中，且能达到相同的技术效果。具体地，图9为实现本申请实施例的一种终端的硬件结构示意图。
该终端900包括但不限于：射频单元901、网络模块902、音频输出单元903、输入单元904、传感器905、显示单元906、用户输入单元907、接口单元908、存储器909、以及处理器910等中的至少部分部件。
本领域技术人员可以理解，终端900还可以包括给各个部件供电的电源(比如电池)，电源可以通过电源管理系统与处理器910逻辑相连，从而通过电源管理系统实现管理充电、放电、以及功耗管理等功能。图9中示出的终端结构并不构成对终端的限定，终端可以包括比图示更多或更少的部件，或者组合某些部件，或者不同的部件布置，在此不再赘述。
应理解的是，本申请实施例中，输入单元904可以包括图形处理器(Graphics Processing Unit，GPU)9041和麦克风9042，图形处理器9041对在视频捕获模式或图像捕获模式中由图像捕获装置(如摄像头)获得的静态图片或视频的图像数据进行处理。显示单元906可包括显示面板9061，可以采用液晶显示器、有机发光二极管等形式来配置显示面板9061。用户输入单元907包括触控面板9071以及其他输入设备9072中的至少一种。触控面板9071，也称为触摸屏。触控面板9071可包括触摸检测装置和触摸控制器两个部分。其他输入设备9072可以包括但不限于物理键盘、功能键(比如音量控制按键、开关按键等)、轨迹球、鼠标、操作杆，在此不再赘述。
本申请实施例中，射频单元901接收来自网络侧设备的下行数据后，可以传输给处理器910进行处理；另外，射频单元901可以向网络侧设备发送上行数据。通常，射频单元 901包括但不限于天线、放大器、收发信机、耦合器、低噪声放大器、双工器等。
存储器909可用于存储软件程序或指令以及各种数据。存储器909可主要包括存储程序或指令的第一存储区和存储数据的第二存储区，其中，第一存储区可存储操作系统、至少一个功能所需的应用程序或指令(比如声音播放功能、图像播放功能等)等。此外，存储器909可以包括易失性存储器或非易失性存储器，或者，存储器909可以包括易失性和非易失性存储器两者。其中，非易失性存储器可以是只读存储器(Read-Only Memory，ROM)、可编程只读存储器(Programmable ROM，PROM)、可擦除可编程只读存储器(Erasable PROM，EPROM)、电可擦除可编程只读存储器(Electrically EPROM，EEPROM)或闪存。易失性存储器可以是随机存取存储器(Random Access Memory，RAM)，静态随机存取存储器(Static RAM，SRAM)、动态随机存取存储器(Dynamic RAM，DRAM)、同步动态随机存取存储器(Synchronous DRAM，SDRAM)、双倍数据速率同步动态随机存取存储器(Double Data Rate SDRAM，DDRSDRAM)、增强型同步动态随机存取存储器(Enhanced SDRAM，ESDRAM)、同步连接动态随机存取存储器(Synchlink DRAM，SLDRAM)和直接内存总线随机存取存储器(Direct Rambus RAM，DRRAM)。本申请实施例中的存储器909包括但不限于这些和任意其它适合类型的存储器。
处理器910可包括一个或多个处理单元；可选的，处理器910集成应用处理器和调制解调处理器，其中，应用处理器主要处理涉及操作系统、用户界面和应用程序等的操作，调制解调处理器主要处理无线通信信号，如基带处理器。可以理解的是，上述调制解调处理器也可以不集成到处理器910中。
其中，处理器910，用于在目标检测时间内确定目标SL信道上的第二通信设备的传输情况；以及根据所述第二通信设备的传输情况，确定接入或不接入目标副链路SL信道；其中，所述第二通信设备是除所述第一通信设备之外的其他通信设备，所述第一通信设备和所述第二通信设备为用于发送SL数据的通信设备。
本实施例中，第一通信设备在进行目标SL信道接入时，通过检测其他SL通信设备在目标SL信道上的传输情况，再根据其他SL通信设备在目标SL信道上的传输情况确定接入或不接入目标SL信道，由此，能够使得SL设备在目标SL信道进行频分复用，以增大目标SL信道的接入概率，提升目标SL信道的频谱利用率，确保通信系统性能。
另一种实现方式中，在所述通信设备800为网络侧设备时，该网络侧设备可以包括处理器和通信接口，所述通信接口和所述处理器耦合，所述处理器用于运行程序或指令，实现如实施例200-500中所述的方法的步骤。该网络侧设备实施例是与上述网络侧设备方法实施例对应的，上述方法实施例的各个实施过程和实现方式均可适用于该网络侧设备实施例中，且能达到相同的技术效果。
具体地，本申请实施例还提供了一种网络侧设备。如图10所示，该网络侧设备1000包括：天线1001、射频装置1002、基带装置1003、处理器1004和存储器1005。天线1001与射频装置1002连接。在上行方向上，射频装置1002通过天线1001接收信息，将接收的 信息发送给基带装置1003进行处理。在下行方向上，基带装置1003对要发送的信息进行处理，并发送给射频装置1002，射频装置1002对收到的信息进行处理后经过天线1001发送出去。
以上实施例中网络侧设备执行的方法可以在基带装置1003中实现，该基带装置1003包基带处理器。
基带装置1003例如可以包括至少一个基带板，该基带板上设置有多个芯片，如图10所示，其中一个芯片例如为基带处理器，通过总线接口与存储器1005连接，以调用存储器1005中的程序，执行以上方法实施例中所示的网络设备操作。
该网络侧设备还可以包括网络接口1006，该接口例如为通用公共无线接口(common public radio interface，CPRI)。
具体地，本发明实施例的网络侧设备1000还包括：存储在存储器1005上并可在处理器1004上运行的指令或程序，处理器1004调用存储器1005中的指令或程序执行图7所示各模块执行的方法，并达到相同的技术效果，为避免重复，故不在此赘述。
本申请实施例还提供一种可读存储介质，所述可读存储介质上存储有程序或指令，该程序或指令被处理器执行时实现上述信道接入方法实施例200-500的各个过程，且能达到相同的技术效果，为避免重复，这里不再赘述。
其中，所述处理器为上述实施例中所述的终端中的处理器。所述可读存储介质，包括计算机可读存储介质，如计算机只读存储器ROM、随机存取存储器RAM、磁碟或者光盘等。
本申请实施例另提供了一种芯片，所述芯片包括处理器和通信接口，所述通信接口和所述处理器耦合，所述处理器用于运行网络侧设备程序或指令，实现上述信道接入方法实施例200-500的各个过程，且能达到相同的技术效果，为避免重复，这里不再赘述。
应理解，本申请实施例提到的芯片还可以称为系统级芯片，系统芯片，芯片系统或片上系统芯片等。
本申请实施例还提供了一种计算机程序产品，该计算机程序产品包括处理器、存储器及存储在所述存储器上并可在所述处理器上运行的程序或指令，所述程序或指令被所述处理器执行时，实现上述信道接入方法实施例200-500的各个过程，且能达到相同的技术效果，为避免重复，这里不再赘述。
本申请实施例还提供了一种通信系统，包括：第一通信设备，所述第一通信设备可用于执行如上所述的信道接入方法实施例200-500中的各个过程，且能达到相同的技术效果，为避免重复，这里不再赘述。
需要说明的是，在本文中，术语“包括”、“包含”或者其任何其他变体意在涵盖非排他性的包含，从而使得包括一系列要素的过程、方法、物品或者装置不仅包括那些要素，而且还包括没有明确列出的其他要素，或者是还包括为这种过程、方法、物品或者装置所固有的要素。在没有更多限制的情况下，由语句“包括一个……”限定的要素，并不排除在包括该 要素的过程、方法、物品或者装置中还存在另外的相同要素。此外，需要指出的是，本申请实施方式中的方法和装置的范围不限按示出或讨论的顺序来执行功能，还可包括根据所涉及的功能按基本同时的方式或按相反的顺序来执行功能，例如，可以按不同于所描述的次序来执行所描述的方法，并且还可以添加、省去、或组合各种步骤。另外，参照某些示例所描述的特征可在其他示例中被组合。
通过以上的实施方式的描述，本领域的技术人员可以清楚地了解到上述实施例方法可借助软件加必需的通用硬件平台的方式来实现，当然也可以通过硬件，但很多情况下前者是更佳的实施方式。基于这样的理解，本申请的技术方案本质上或者说对现有技术做出贡献的部分可以以计算机软件产品的形式体现出来，该计算机软件产品存储在一个存储介质(如ROM/RAM、磁碟、光盘)中，包括若干指令用以使得一台终端(可以是手机，计算机，服务器，空调器，或者网络设备等)执行本申请各个实施例所述的方法。
上面结合附图对本申请的实施例进行了描述，但是本申请并不局限于上述的具体实施方式，上述的具体实施方式仅仅是示意性的，而不是限制性的，本领域的普通技术人员在本申请的启示下，在不脱离本申请宗旨和权利要求所保护的范围情况下，还可做出很多形式，均属于本申请的保护之内。

Claims (34)

  1. 一种信道接入方法，包括：
    第一通信设备在目标检测时间内确定目标副链路SL信道上的第二通信设备的传输情况；
    所述第一通信设备根据所述第二通信设备的传输情况，确定接入或不接入所述目标SL信道；
    其中，所述第二通信设备是除所述第一通信设备之外的其他通信设备，所述第一通信设备和所述第二通信设备为用于发送SL数据的通信设备。
  2. 如权利要求1所述的方法，其中，所述第二通信设备的传输情况包括存在所述第二通信设备对应的SL传输，或不存在所述第二通信设备对应的SL传输，其中，所述SL传输包括当前SL传输、预留SL传输、潜在SL传输、预期SL传输中的至少一项。
  3. 如权利要求1所述的方法，其中，所述第一通信设备在目标检测时间内确定目标SL信道上的第二通信设备的传输情况的步骤，包括：
    所述第一通信设备基于所述目标检测时间接收目标副链路控制信息SCI；
    所述第一通信设备根据所述目标SCI确定所述第二通信设备对应的信道的时频资源信息；
    所述第一通信设备根据所述第二通信设备对应的信道的时频资源信息确定所述第二通信设备的传输情况。
  4. 如权利要求3所述的方法，其中，所述目标SCI包括以下至少一项：
    所述目标检测时间内接收到的SCI；
    所述目标检测时间之前或之后的第一时段内接收到的SCI；
    满足第一条件的SCI，所述第一条件包括SCI所指示的解调参考信号DMRS的参考信号接收功率RSRP或能量值超过第一阈值；
    目标检测频域内接收到的SCI，所述目标检测频域与所述目标SL信道对应；
    在目标资源池上接收到的SCI，所述目标资源池与所述第一通信设备和/或所述第二通信设备对应；
    在目标资源上接收到的SCI，所述目标资源与所述第一通信设备和/或所述第二通信设备对应。
  5. 如权利要求1-4中任一项所述的方法，其中，所述第一通信设备根据所述第二通信设备的传输情况，确定接入或不接入所述目标SL信道的步骤，包括：
    所述第一通信设备根据第一值和第二值的差值确定目标值，其中，所述第一值是所述第一通信设备根据在所述目标检测时间内检测到的接收信号强度指示RSSI、在所述目标检测时间内检测到的能量检测值、承载所述目标SCI的PSCCH的RSSI、所述SCI指示的PSSCH的RSSI中的任一项确定，所述第二值是所述第一通信设备根据所述第二通信设备的传输情况或所述目标SCI所指示的DMRS的RSRP确定；
    所述第一通信设备根据所述目标值确定目标SL信道的信道状态；
    所述第一通信设备根据所述目标SL信道的信道状态，确定接入或不接入所述目标SL信道。
  6. 如权利要求5所述的方法，其中，在所述第二通信设备的传输情况为所述目标检测时间内存在所述第二通信设备对应的SL传输的情况下，所述第二值为特定值，所述特定值由协议约定或高层配置；
    在所述第二通信设备的传输情况为所述目标检测时间内不存在所述的第二通信设备对应的SL传输的情况下，所述第二值为0。
  7. 如权利要求5所述的方法，其中，所述第二值是根据目标频域资源信息以及目标RSRP确定；
    其中，所述目标频域资源信息包括所述目标SCI所指示的DMRS的频域资源信息、承载所述目标SCI的物理副链路共享信道PSSCH的频域资源信息、承载所述目标SCI的物理副链路控制信道PSCCH的频域资源信息中的至少一项；
    所述目标RSRP包括所述目标SCI所指示的DMRS的RSRP。
  8. 如权利要求7所述的方法，其中，所述目标SCI所指示的DMRS的RSRP，包括：
    在所述目标SCI指示的DMRS的符号数大于1的情况下，所述目标SCI所指示的DMRS的RSRP包括以下任一项：
    所述目标SCI所指示的预设符号上的DMRS对应的RSRP；
    所述目标SCI所指示的DMRS中各符号对应的RSRP的平均值；
    所述目标SCI所指示的DMRS中各符号对应的RSRP的最大值；
    所述目标SCI所指示的DMRS中各符号对应的RSRP的最小值；
    针对所述目标SCI所指示的DMRS，距离所述目标检测时间中的开始时间或结束时间最近的时域位置对应的DMRS的RSRP；
    针对所述目标SCI所指示的DMRS，距离所述目标检测时间中的开始时间或结束时间最远的时域位置对应的DMRS的RSRP。
  9. 如权利要求7所述的方法，其中，所述目标检测时间与所述PSSCH或PSCCH的传输时间至少部分重叠。
  10. 如权利要求5-9中任一项所述的方法，其中，所述第一通信设备根据第一值和第二值的差值确定目标值的步骤，包括以下至少一项：
    在所述目标检测时间对应有多个所述目标SL信道、且多个所述目标SL信道为同一类型的信道的情况下，所述第一通信设备根据第三值和第四值的差值确定所述目标值；
    在所述目标检测时间对应有多个所述目标SL信道、且多个所述目标SL信道分别对应不同类型的信道的情况下，所述第一通信设备根据第五值和第六值的差值确定所述目标值；
    其中，所述第三值是多个第一值的平均值，所述第一值与所述目标SL信道一一对应，或者，所述第三值是多个所述目标SL信道中的指定SL信道对应的第一值，或者，所述第 三值是多个所述目标SL信道中的任一SL信道对应的第一值；
    所述第四值是多个第二值的平均值，所述第二值与所述目标SL信道一一对应，或者，所述第四值是多个所述目标SL信道中的指定SL信道对应的第二值，或者，所述第四值是多个所述目标SL信道中的任一SL信道对应的第二值；
    所述第五值是多个第一值的平均值，所述第一值与所述目标SL信道一一对应，或者，所述第五值是多个所述目标SL信道中的指定SL信道对应的第一值，或者，所述第五值是多个所述目标SL信道中的任一SL信道对应的第一值，或者，所述第五值是多个所述目标SL信道中传输时间最早的SL信道对应的第一值，或者，所述第五值是多个所述目标SL信道中传输时间最晚的SL信道对应的第一值；
    所述第六值是多个所述目标SL信道中的指定SL信道对应的第二值，或者，所述第六值是多个所述目标SL信道中的任一SL信道对应的第二值，或者，所述第六值是多个所述目标SL信道中传输时间最早的SL信道对应的第二值，或者，所述第六值是多个所述目标SL信道中传输时间最晚的SL信道对应的第二值。
  11. 如权利要求5-10中任一项所述的方法，其中，所述第一通信设备根据所述目标值确定所述目标SL信道的信道状态的步骤，包括：
    在所述目标值大于第一门限值的情况下，所述第一通信设备确定所述目标SL信道为空；
    在所述目标值小于第一门限值的情况下，所述第一通信设备确定所述目标SL信道为忙；
    其中，所述第一门限值与所述目标SL信道对应的目标检测频域相关。
  12. 如权利要求1-11中任一项所述的方法，其中，所述第一通信设备根据所述第二通信设备的传输情况，确定接入或不接入目标副链路SL信道的步骤，包括以下至少一项：
    所述第一通信设备在进行了N次所述在目标检测时间内确定目标SL信道上的第二通信设备的传输情况的步骤、且根据所述第二通信设备的传输情况确定所述目标SL信道为空的次数大于第二阈值的情况下，确定接入所述目标SL信道，其中，N为大于或等于1的整数；
    在第一计数器的计数值为0之后，所述第一通信设备在进行了M次所述在目标检测时间内确定目标SL信道上的第二通信设备的传输情况的步骤、且根据所述第二通信设备的传输情况确定所述目标SL信道为空的次数大于第三阈值的情况下，确定接入目标SL信道传输，其中，所述第一计数器用于指示所述第一通信设备执行所述在目标检测时间内确定目标SL信道上的第二通信设备的传输情况的步骤的次数，M为大于或等于1的整数。
  13. 如权利要求12所述的方法，其中，所述第二阈值与LBT的类型和/或LBT的优先级相关；
    和/或，所述第三阈值与LBT的类型和/或LBT的优先级相关。
  14. 如权利要求1或2所述的方法，其中，所述方法还包括：
    在所述目标检测时间内均是Gap的情况下，所述第一通信设备执行以下任一项：
    在所述Gap用于传输PSSCH和/或PSCCH的情况下，所述第一通信设备执行所述在目标检测时间内确定目标路SL信道上的第二通信设备的传输情况，以及根据所述第二通信设 备的传输情况，确定接入或不接入目标SL信道的步骤；
    在所述Gap不能用于传输PSSCH和/或PSCCH的情况下，所述第一通信设备基于所述目标检测时间在所述Gap上确定第三通信设备的传输情况，以及根据所述第三通信设备的传输情况确定接入或不接入目标SL信道，其中，所述第三通信设备是除所述第一通信设备之外的其他通信设备。
  15. 如权利要求1或2所述的方法，其中，所述第一通信设备基于所述目标检测时间在所述Gap上确定第三通信设备的传输情的步骤，包括以下任一项：
    所述第一通信设备在所述Gap中的第二时段内暂停执行所述LBT，以及在所述Gap中除所述第二时段之外的其他时段上进行LBT，得到所述第三通信设备的传输情况，其中，所述第二时段与所述SL传输的延迟时间大小相关；
    所述第一通信设备在所述Gap对应的第三时段内执行LBT，得到所述第三通信设备的传输情况，其中，所述第三时段位于所述第三通信设备对应的SL传输之前。
  16. 如权利要求1-14中任一项所述的方法，其中，所述方法还包括：
    在所述目标SL信道对应的频谱不是SL通信设备的专用频谱的情况下，所述第一通信设备执行所述在目标检测时间内确定目标SL信道上的第二通信设备的传输情况的步骤，其中，所述SL通信设备至少包括所述第一通信设备和所述第二通信设备。
  17. 一种信道接入装置，应用于第一通信设备，包括：
    检测模块，用于在目标检测时间内确定目标副链路SL信道上的第二通信设备的传输情况；
    确定模块，用于根据所述第二通信设备的传输情况，确定接入或不接入所述目标SL信道；
    其中，所述第二通信设备是除所述第一通信设备之外的其他通信设备，所述第一通信设备和所述第二通信设备为用于发送SL数据的通信设备。
  18. 如权利要求17所述的装置，其中，所述第二通信设备的传输情况包括存在所述第二通信设备对应的SL传输，或不存在所述第二通信设备对应的SL传输，其中，所述SL传输包括当前SL传输、预留SL传输、潜在SL传输、预期SL传输中的至少一项。
  19. 如权利要求17所述的装置，其中，所述检测模块在目标检测时间内确定目标SL信道上的第二通信设备的传输情况的步骤，包括：
    基于所述目标检测时间接收目标副链路控制信息SCI；
    根据所述目标SCI确定所述第二通信设备对应的信道的时频资源信息；
    根据所述第二通信设备的信道对应的时频资源信息确定所述第二通信设备的传输情况。
  20. 如权利要求19所述的装置，其中，所述目标SCI包括以下至少一项：
    所述目标检测时间内接收到的SCI；
    所述目标检测时间之前或之后的第一时段内接收到的SCI；
    满足第一条件的SCI，所述第一条件包括SCI所指示的解调参考信号DMRS的参考信号接收功率RSRP或能量值超过第一阈值；
    目标检测频域内接收到的SCI，所述目标检测频域与所述目标SL信道对应；
    在目标资源池上接收到的SCI，所述目标资源池与所述第一通信设备和/或所述第二通信设备对应；
    在目标资源上接收到的SCI，所述目标资源与所述第一通信设备和/或所述第二通信设备对应。
  21. 如权利要求17-20中任一项所述的装置，其中，所述确定模块根据所述第二通信设备的传输情况，确定接入或不接入所述目标SL信道的步骤，包括：
    根据第一值和第二值的差值确定目标值，其中，所述第一值是所述第一通信设备根据在所述目标检测时间内检测到的接收信号强度指示RSSI、在所述目标检测时间内检测到的能量检测值、承载所述目标SCI的PSCCH的RSSI、所述SCI指示的PSSCH的RSSI中的任一项确定，所述第二值是所述第一通信设备根据所述第二通信设备的传输情况或所述目标SCI所指示的DMRS的RSRP确定；
    根据所述目标值确定目标SL信道的信道状态；
    根据所述目标SL信道的信道状态，确定接入或不接入所述目标SL信道。
  22. 如权利要求21所述的装置，其中，所述确定模块根据在所述目标检测时间内的第二通信设备的传输情况，确定所述第二值的步骤，包括：
    在所述第二通信设备的传输情况为所述目标检测时间内存在所述第二通信设备对应的SL传输的情况下，确定所述第二值为特定值，所述特定值由协议约定或高层配置；
    在所述第二通信设备的传输情况为所述目标检测时间内不存在所述的第二通信设备对应的SL传输的情况下，确定所述第二值为0。
  23. 如权利要求21所述的装置，其中，所述第二值是根据目标频域资源信息以及目标RSRP确定；
    其中，所述目标频域资源信息包括所述目标SCI所指示的DMRS的频域资源信息、承载所述目标SCI的物理副链路共享信道PSSCH的频域资源信息、承载所述目标SCI的物理副链路控制信道PSCCH的频域资源信息中的至少一项；
    所述目标RSRP包括所述目标SCI所指示的DMRS的RSRP。
  24. 如权利要求23所述的装置，其中，所述目标SCI所指示的DMRS的RSRP，包括：
    在所述目标SCI指示的DMRS的符号数大于1的情况下，所述目标SCI所指示的DMRS的RSRP包括以下任一项：
    所述目标SCI所指示的预设符号上的DMRS对应的RSRP；
    所述目标SCI所指示的DMRS中各符号对应的RSRP的平均值；
    所述目标SCI所指示的DMRS中各符号对应的RSRP的最大值；
    所述目标SCI所指示的DMRS中各符号对应的RSRP的最小值；
    针对所述目标SCI所指示的DMRS，距离所述目标检测时间中的开始时间或结束时间最近的时域位置对应的DMRS的RSRP；
    针对所述目标SCI所指示的DMRS，距离所述目标检测时间中的开始时间或结束时间最远的时域位置对应的DMRS的RSRP。
  25. 如权利要求23所述的装置，其中，所述目标检测时间与所述PSSCH或PSCCH的传输时间至少部分重叠。
  26. 如权利要求21-25中任一项所述的装置，其中，所述确定模块根据第一值和第二值的差值确定目标值的步骤，包括以下至少一项：
    在所述目标检测时间对应有多个所述目标SL信道、且多个所述目标SL信道为同一类型的信道的情况下，根据第三值和第四值的差值确定所述目标值；
    在所述目标检测时间对应有多个所述目标SL信道、且多个所述目标SL信道分别对应不同类型的信道的情况下，根据第五值和第六值的差值确定所述目标值；
    其中，所述第三值是多个第一值的平均值，所述第一值与所述目标SL信道一一对应，或者，所述第三值是多个所述目标SL信道中的指定SL信道对应的第一值，或者，所述第三值是多个所述目标SL信道中的任一SL信道对应的第一值；
    所述第四值是多个第二值的平均值，所述第二值与所述目标SL信道一一对应，或者，所述第四值是多个所述目标SL信道中的指定SL信道对应的第二值，或者，所述第四值是多个所述目标SL信道中的任一SL信道对应的第二值；
    所述第五值是多个第一值的平均值，所述第一值与所述目标SL信道一一对应，或者，所述第五值是多个所述目标SL信道中的指定SL信道对应的第一值，或者，所述第五值是多个所述目标SL信道中的任一SL信道对应的第一值，或者，所述第五值是多个所述目标SL信道中传输时间最早的SL信道对应的第一值，或者，所述第五值是多个所述目标SL信道中传输时间最晚的SL信道对应的第一值；
    所述第六值是多个所述目标SL信道中的指定SL信道对应的第二值，或者，所述第六值是多个所述目标SL信道中的任一SL信道对应的第二值，或者，所述第六值是多个所述目标SL信道中传输时间最早的SL信道对应的第二值，或者，所述第六值是多个所述目标SL信道中传输时间最晚的SL信道对应的第二值。
  27. 如权利要求21-26中任一项所述的装置，其中，所述确定模块根据所述目标值确定所述目标SL信道的信道状态的步骤，包括：
    在所述目标值大于第一门限值的情况下，确定所述目标SL信道为空；
    在所述目标值小于第一门限值的情况下，确定所述目标SL信道为忙；
    其中，所述第一门限值与所述目标SL信道对应的目标检测频域相关。
  28. 如权利要求17-27中任一项所述的装置，其中，所述确定模块根据所述第二通信设备的传输情况，确定接入或不接入目标副链路SL信道的步骤，包括以下至少一项：
    在进行了N次所述在目标检测时间内确定目标SL信道上的第二通信设备的传输情况的 步骤、且根据所述第二通信设备的传输情况确定所述目标SL信道为空的次数大于第二阈值的情况下，确定接入所述目标SL信道，其中，N为大于或等于1的整数；
    在第一计数器的计数值为0之后，在进行了M次所述在目标检测时间内确定目标SL信道上的第二通信设备的传输情况的步骤、且根据所述第二通信设备的传输情况确定所述目标SL信道为空的次数大于第三阈值的情况下，确定接入目标SL信道传输，其中，所述第一计数器用于指示所述第一通信设备执行所述在目标检测时间内确定目标SL信道上的第二通信设备的传输情况的步骤的次数，M为大于或等于1的整数。
  29. 如权利要求28所述的装置，其中，所述第二阈值与LBT的类型和/或LBT的优先级相关；
    和/或，所述第三阈值与LBT的类型和/或LBT的优先级相关。
  30. 如权利要求17或18所述的装置，其中，在所述目标检测时间内均是Gap、且所述Gap用于传输PSSCH和/或PSCCH的情况下，所述检测模块执行所述在目标检测时间内确定目标SL信道上的第二通信设备的传输情况，以及所述确定模块根据所述第二通信设备的传输情况，确定接入或不接入目标SL信道的步骤；
    和/或，
    在所述目标检测时间内均是Gap、且所述Gap不能用于传输PSSCH和/或PSCCH的情况下，所述检测模块还用于基于所述目标检测时间在所述Gap上确定第三通信设备的传输情况，以及所述确定模块还用于根据所述第三通信设备的传输情况确定接入或不接入目标SL信道，其中，所述第三通信设备是除所述第一通信设备之外的其他通信设备。
  31. 如权利要求17或18所述的装置，其中，所述检测模块基于所述目标检测时间在所述Gap上确定第三通信设备的传输情的步骤，包括以下任一项：
    在所述Gap中的第二时段内暂停执行所述LBT，以及在所述Gap中除所述第二时段之外的其他时段上进行LBT，得到所述第三通信设备的传输情况，其中，所述第二时段与所述SL传输的延迟时间大小相关；
    在所述Gap对应的第三时段内执行LBT，得到所述第三通信设备的传输情况，其中，所述第三时段位于所述第三通信设备对应的SL传输之前。
  32. 如权利要求17-30中任一项所述的装置，其中，所述检测模块用于在所述目标SL信道对应的频谱不是SL通信设备的专用频谱的情况下，执行所述在目标检测时间内确定目标SL信道上的第二通信设备的传输情况的步骤，其中，所述SL通信设备至少包括所述第一通信设备和所述第二通信设备。
  33. 一种通信设备，包括处理器和存储器，所述存储器存储可在所述处理器上运行的程序或指令，所述程序或指令被所述处理器执行时实现如权利要求1至16任一项所述的信道接入方法的步骤。
  34. 一种可读存储介质，所述可读存储介质上存储程序或指令，所述程序或指令被处理器执行时实现如权利要求1至16任一项所述的信道接入方法的步骤。
PCT/CN2023/089875 2022-04-25 2023-04-21 信道接入方法、装置及通信设备 WO2023207804A1 (zh)

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