WO2024125428A1 - Procédé et dispositif de transmission et support de stockage lisible - Google Patents

Procédé et dispositif de transmission et support de stockage lisible Download PDF

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Publication number
WO2024125428A1
WO2024125428A1 PCT/CN2023/137743 CN2023137743W WO2024125428A1 WO 2024125428 A1 WO2024125428 A1 WO 2024125428A1 CN 2023137743 W CN2023137743 W CN 2023137743W WO 2024125428 A1 WO2024125428 A1 WO 2024125428A1
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WIPO (PCT)
Prior art keywords
preset
transmission
ssb
terminal
psfch
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PCT/CN2023/137743
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English (en)
Chinese (zh)
Inventor
姜蕾
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维沃移动通信有限公司
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Publication of WO2024125428A1 publication Critical patent/WO2024125428A1/fr

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  • the present application belongs to the field of communication technology, and specifically relates to a transmission method, device and readable storage medium.
  • the UE can use the Type 2A channel access method to initiate the Channel Occupancy Time (COT) transmission of S-SSB.
  • COT Channel Occupancy Time
  • the adoption conditions of Type 2A are as follows: (1) the duration of each transmission does not exceed 1ms; (2) the duty cycle of S-SSB transmission does not exceed 1/20.
  • the above transmission rules meet the following requirements: within a 50ms observation period, the number of short control signaling transmissions is less than or equal to 50, and the total transmission duration is less than or equal to 2500us.
  • PSFCH Physical sidelink Feedback Channel
  • the embodiments of the present application provide a transmission method, a device and a readable storage medium, which can solve the problem of how the UE should use Type 2A to initiate COT transmission PSFCH in SLU.
  • a transmission method comprising:
  • the terminal transmits the first object using a channel access mode of type 2A according to a preset rule
  • the first object is a sidelink synchronization signal block S-SSB and/or a physical sidelink feedback channel PSFCH, and the preset rule is associated with at least one of the following:
  • a transmission device is provided, the device being applied to a terminal, the device comprising:
  • a transmission module configured for the terminal to transmit the first object using a channel access mode of type 2A according to a preset rule
  • the first object is S-SSB and/or PSFCH, and the preset rule is associated with at least one of the following:
  • a terminal comprising a processor and a memory, wherein the memory stores a program or instruction that can be executed on the processor, and when the program or instruction is executed by the processor, the steps of the method described in the first aspect are implemented.
  • a terminal including a processor and a communication interface, wherein the communication interface is used for the terminal to transmit a first object in a channel access mode of type 2A according to a preset rule;
  • the first object is a sidelink synchronization signal block S-SSB and/or a physical sidelink feedback channel PSFCH, and the preset rule is associated with at least one of the following:
  • a communication system including: a terminal and a network side device, wherein the terminal can be used to execute the steps of the transmission method described in the first aspect.
  • a readable storage medium on which a program or instruction is stored, and when the program or instruction is executed by a processor, the steps of the transmission method described in the first aspect are implemented.
  • a chip comprising a processor and a communication interface, wherein the communication interface is coupled to the processor, and the processor is used to run a program or instruction to implement the transmission method as described in the first aspect.
  • a computer program/program product is provided, wherein 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 the transmission method as described in the first aspect. The steps of the transfer method.
  • the terminal adopts a channel access method of type 2A Type2A to transmit S-SSB and/or PSFCH according to a preset rule;
  • the preset rule is associated with at least one of the following: the transmission position of the first object; the subcarrier spacing SCS of the first object; the number of first objects or the proportion of the total number of the first objects; the priority of the first object; the synchronization source of the terminal; the position of the terminal; the synchronization resource of the terminal; the synchronization priority of the terminal. That is, the embodiment of the present application provides a transmission rule that can be applied to the transmission of S-SSB and/or PSFCH using the channel access method of Type2A.
  • FIG1a is a block diagram of a wireless communication system provided by an embodiment of the present application.
  • FIG1b is a schematic diagram of a sidelink example system architecture
  • FIG1c is a schematic diagram of the structure of the SL physical channel
  • FIG2 is a schematic diagram of a flow chart of a transmission method provided in an embodiment of the present application.
  • FIG3 is a schematic diagram of the structure of a transmission device provided in an embodiment of the present application.
  • FIG4 is a schematic diagram of the structure of a communication device provided in an embodiment of the present application.
  • FIG5 is a schematic diagram of the structure of a terminal provided in an embodiment of the present application.
  • first, second, etc. in the specification and claims of the present application are used to distinguish similar objects, and are not used to describe a specific order or sequence. It should be understood that the terms used in this way are interchangeable under appropriate circumstances, so that the embodiments of the present application can be implemented in an order other than those illustrated or described here, and the objects distinguished by “first” and “second” are generally of the same type, and the number of objects is not limited.
  • the first object can be one or more.
  • “and/or” in the specification and claims represents at least one of the connected objects, and the character “/" generally represents that the objects associated with each other are in an "or” relationship.
  • LTE 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
  • FIG1a shows a block diagram of a wireless communication system applicable to an embodiment of the present application.
  • 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 handheld computer, a netbook, an ultra-mobile personal computer (ultra-mobile personal computer, UMPC), a mobile Internet device (Mobile Internet Device, MID), an augmented reality (augmented reality, AR)/virtual reality (virtual reality, VR) device , robots, wearable devices (Wearable Device), vehicle user equipment (VUE), pedestrian user equipment (PUE), smart home (home appliances with wireless communication functions, such as refrigerators, televisions, washing machines or furniture, etc.), game consoles, personal computers (personal computers, PCs), teller machines or self-service machines and other terminal side devices, wearable devices include: smart watches, smart bracelets, smart headphones
  • the network side device 12 may include access network equipment or core network equipment, wherein the access network equipment may also be called wireless access network equipment, wireless access network (Radio Access Network, RAN), wireless access network function or wireless access network unit.
  • the access network equipment may include base stations, wireless local area networks (WLAN) access points or WiFi nodes, etc.
  • the base station may be called Node B, evolved Node B (eNB), access point, base transceiver station (BTS), 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 some other appropriate term in the field.
  • eNB evolved Node B
  • BTS base transceiver station
  • BSS Basic Service Set
  • ESS Extended Service Set
  • TRP Transmitting Receiving Point
  • the base station is not limited to specific technical vocabulary. It should be noted that in the embodiments of the present application, only the base station in the NR system is taken as an example for introduction, and the specific type of the base station is not limited.
  • LTE sidelink that is, data transmission between terminals (User Equipment, UE) directly on the physical layer.
  • LTE sidelink is based on broadcast communication and can be used to support basic safety communications of vehicle to everything (V2X), but is not suitable for other more advanced V2X services.
  • 5G NR system supports more advanced sidelink transmission design, such as unicast, multicast or groupcast, so as to support a more comprehensive range of business types.
  • an Automatic Gain Control (AGC) symbol is required before each SL transmission, and a gap symbol is required after each transmission.
  • the AGC symbol is generally a repeated transmission of the next symbol, such as the Physical Sidelink Control Channel (PSCCH)/Physical Sidelink Shared Channel (PSSCH) or PSFCH.
  • PSCCH Physical Sidelink Control Channel
  • PSSCH Physical Sidelink Shared Channel
  • PSFCH Physical Sidelink Shared Channel
  • the first symbol of the 2-symbol PSFCH is used for AGC.
  • SL UE can only start PSCCH/PSSCH or PSFCH at a fixed position within the slot. Or PSFCH transmission.
  • unlicensed bands can operate in 5GHz, 37GHz and 60GHz bands. Since unlicensed bands are shared by multiple technologies (RATs), such as WiFi, radar, LTE-LAA, etc., in some countries or regions, unlicensed bands must comply with regulations when used to ensure that all devices can use the resource fairly, such as listen before talk (LBT), maximum channel occupancy time (MCOT) and other rules.
  • LBT listen before talk
  • MCOT maximum channel occupancy time
  • ED energy detection
  • the channel When the detected power is lower than a threshold, the channel is considered to be idle and the transmission node can send. Otherwise, the channel is considered to be busy and the transmission node cannot send.
  • the transmission node can be a base station, UE, WiFi AP, etc. After the transmission node starts transmitting, the occupied channel time COT cannot exceed MCOT.
  • the transmission node In addition, according to the occupied channel bandwidth (OCB) regulation, in the unlicensed frequency band, the transmission node must occupy at least 70% (60GHz) or 80% (5GHz) of the bandwidth of the entire frequency band during each transmission.
  • OCB occupied channel bandwidth
  • Type1LBT is a channel listening mechanism based on back-off. When the transmission node senses that the channel is busy, it backs off and continues to listen until it senses that the channel is empty.
  • Type2C is that the sending node does not perform LBT, that is, no LBT or immediate transmission.
  • Type2A and Type2B LBT are one-shot LBT, that is, the node performs LBT once before transmission, and transmits if the channel is empty, and does not transmit if the channel is busy. The difference is that Type2A performs LBT within 25us, which is applicable when the gap between two transmissions is greater than or equal to 25us when the COT is shared.
  • Type2B performs LBT within 16us, which is applicable when the gap between two transmissions is equal to 16us when the COT is shared.
  • Type 2 LBT which is applicable to LAA/eLAA/FeLAA.
  • the gap between two transmissions is greater than or equal to 25us, and eNB and UE can use Type 2 LBT.
  • the types of LBT are Type 1, Type 2 and Type 3.
  • Type 1 is a channel listening mechanism based on fallback
  • Type 2 is one-shot LBT
  • 5us LBT is performed within 8us
  • Type 3 does not perform LBT.
  • Type2A can use Type2A to initiate COT transmission of S-SSB.
  • the adoption conditions of Type2A are as follows: (1) the duration of each transmission does not exceed 1ms; (2) the duty cycle of S-SSB transmission does not exceed 1/20.
  • the above transmission rules comply with the definition of short control signaling in ETSI EN301893: within a 50ms observation period, the number of short control signaling transmissions is less than or equal to 50, and the total transmission duration is less than or equal to 2500us.
  • an embodiment of the present application provides a transmission method, the execution subject of the method is a terminal, and the method includes the following steps:
  • Step 201 The terminal transmits a first object using a Type 2A channel access method according to a preset rule
  • the first object is a sidelink synchronization signal block S-SSB and/or a physical sidelink feedback channel PSFCH, and the preset rule is associated with at least one of the following:
  • the terminal adopts a channel access method of type 2A (Type2A) to transmit S-SSB and/or PSFCH according to a preset rule;
  • the preset rule is associated with at least one of the following: the transmission position of the first object; the subcarrier spacing SCS of the first object; the number of first objects or the proportion of the total number of the first objects; the priority of the first object; the synchronization source of the terminal; the position of the terminal; the synchronization resource of the terminal; the synchronization priority of the terminal. That is, the embodiment of the present application provides a transmission rule that can be applied to the transmission of S-SSB and/or PSFCH using the channel access method of Type2A.
  • the preset rule includes:
  • Type2A channel access mode is used for transmission;
  • the first transmission position is predefined by a protocol or preconfigured by a network.
  • the candidate transmission position may or may not include additional candidate transmission positions for S-SSB and/or additional PSFCH.
  • the additional candidate transmission positions for S-SSB and/or PSFCH are additional candidate transmission positions for certain S-SSBs and/or PSFCHs on unlicensed spectrum.
  • the preset rule includes:
  • Type2A channel access mode is used for transmission;
  • the first SCS is predefined by the protocol or preconfigured by the network.
  • the UE uses Type 2A channel access only for S-SSB and/or PSFCH transmission of a specific SCS (e.g., the first SCS). For example, the UE uses Type 2A access channel to transmit S-SSB with an SCS of 15KHz.
  • the preset rule includes:
  • Type2A channel access mode is used for transmission;
  • N1, x1, M1, and y1 are predefined by the protocol or preconfigured by the network.
  • the proportion of the total number of first objects refers to: the proportion of the number of first objects transmitted using the Type2A channel access mode to the number of all first objects;
  • the UE adopts Type 2A channel access for transmission of no more than N1 or x1% of S-SSBs and/or M1 or y1% of PSFCHs, wherein the S-SSBs and/or PSFCHs may be all S-SSBs and/or PSFCHs, or may be protocol-configured/pre-configured S-SSBs and/or PSFCHs that can be transmitted using Type 2A access channels.
  • the preset rule includes at least one of the following:
  • S-SSB is preferred and Type2A channel access mode is used for transmission;
  • PSFCH is preferred and Type2A channel access mode is adopted for transmission;
  • Type 2A channel access mode is used for transmission
  • the first priority is predefined by the protocol or preconfigured by the network.
  • the UE selects S-SSB and/or PSFCH transmission according to priority and adopts Type 2A channel access;
  • S-SSB is preferred and Type 2A channel access is used for transmission, including:
  • the first condition includes at least one of the following:
  • the number of S-SSB transmissions is not greater than a first preset number threshold
  • the duration of S-SSB transmission is not greater than the first preset duration threshold
  • the number of S-SSBs transmitted is not greater than N2 or the proportion of the total number is not greater than x2%;
  • the first preset number threshold, the first preset duration threshold, the first preset total duration threshold, N2, and x2 are predefined by the protocol or preconfigured by the network.
  • the duration of S-SSB transmission refers to the single transmission duration of S-SSB after Type2A channel access.
  • Type2A channel access method is used to transmit S-SSB.
  • the transmission of S-SSB is preferentially selected to adopt Type 2A channel access until one of the following conditions is met first:
  • the transmitted S-SSB exceeds N2 or exceeds x2% of the total number of S-SSBs
  • the number of S-SSB transmissions is greater than the first preset number threshold
  • the duration of S-SSB transmission is greater than the first preset duration threshold
  • the total duration of S-SSB transmission is greater than the first preset total duration threshold
  • the number of transmitted S-SSBs is greater than N2, or the total number accounts for more than x2%
  • Type2A channel access method cannot be used to transmit S-SSB.
  • the Type2A channel access method is used to transmit the PSFCH
  • the third preset number threshold, the third preset time threshold, and the third preset total time threshold are predefined by the protocol or preconfigured by the network.
  • the Type2A channel access method is used to transmit the S-SSB and after the S-SSB transmission is completed, if the number of S-SSB transmissions, the duration of the S-SSB transmission, and the total duration of the S-SSB transmission do not exceed the corresponding threshold, the Type2A channel access method can be used to transmit the PSFCH;
  • Type 2A channel access mode is used for transmission, including:
  • the second condition includes at least one of the following:
  • the number of PSFCH transmissions is not greater than a second preset number threshold
  • the number of transmitted PSFCHs is not greater than M2 or the total number is not greater than y2%;
  • the second preset number threshold, the second preset duration threshold, the second preset total duration threshold, M2, and y2 are predefined by the protocol or preconfigured by the network.
  • the duration of PSFCH transmission refers to the single transmission duration of PSFCH after Type2A channel access.
  • the Type2A channel access method is used to transmit the PSFCH.
  • the transmission of PSFCH is preferentially selected to adopt Type 2A channel access until one of the following conditions is met first:
  • the transmitted PSFCH exceeds M2 or exceeds y2% of the total number of PSFCHs
  • the second condition is exceeded, for example, the number of PSFCH transmissions is greater than the second preset number threshold, the duration of PSFCH transmission is greater than the second preset duration threshold, the total duration of PSFCH transmission is greater than the second preset total duration threshold, If at least one of the following conditions occurs: the duration threshold, the number of transmitted PSFCHs is greater than M2, or the total number accounts for more than y2%, the Type2A channel access method cannot be used to transmit PSFCH.
  • the Type2A channel access method is used to transmit the S-SSB;
  • the fourth preset number threshold, the fourth preset duration threshold, and the fourth preset total duration threshold are predefined by the protocol or preconfigured by the network.
  • Type2A channel access mode is used to transmit PSFCH and after PSFCH transmission is completed, if the number of PSFCH transmissions, the duration of PSFCH transmission, and the total duration of PSFCH transmission do not exceed the corresponding threshold, Type2A channel access mode can be used to transmit S-SSB;
  • the preset rules also include:
  • the number of transmissions of S-SSB and PSFCH transmitted using Type 2A channel access mode is not greater than the fifth preset number threshold, the duration of S-SSB and PSFCH transmission is not greater than the fifth preset duration threshold, and the total duration of S-SSB and PSFCH transmission is not greater than the fifth preset total duration threshold;
  • the fifth preset number threshold, the fifth preset duration threshold, and the fifth preset total duration threshold are predefined by the protocol or preconfigured by the network.
  • the number of transmissions of S-SSB and PSFCH transmitted using the Type2A channel access method, the transmission duration and the total transmission duration also need to meet the corresponding thresholds.
  • the specific values of the above-mentioned corresponding Xth preset thresholds may be the same or different, and are set according to the actual technical scenario requirements.
  • the embodiments of the present application do not make specific limitations on this.
  • the preset rules include: in order of priority, for S-SSB and/or PSFCH, when Type2A channel access mode is used for transmission, the priority of S-SSB is predefined by the protocol or preconfigured by the network, and the priority of PSFCH is the highest priority among the priorities of PSCCH and/or PSSCH associated with PSFCH, or the priority of PSFCH is predefined by the protocol or preconfigured by the network.
  • PSFCH for sending inter-UE coordination information is (pre)configured by the protocol
  • the UE uses the Type 2A access channel to transmit S-SSB and/or the transmission with higher priority among different types of PSFCH.
  • the priority order from high to low may be: S-SSB, PSFCH for feedback of HARQ, PSFCH for sending Inter-UE coordination information; or PSFCH for feedback of HARQ, S-SSB, PSFCH for sending Inter-UE coordination information; and so on.
  • the first priority is predefined by the protocol or preconfigured by the network.
  • the UE uses a Type 2A access channel to transmit S-SSB and/or PSFCH of a specific priority, such as transmission of priorities 1-4 (for example, a total of 8 priorities can be set).
  • a specific priority such as transmission of priorities 1-4 (for example, a total of 8 priorities can be set).
  • the preset rule includes:
  • Type2A channel access method is used to transmit S-SSB.
  • Type 2A channel access is preferred to transmit S-SSB. If the synchronization information is unreliable, use Type 2A channel access as much as possible;
  • the preset rule includes:
  • Type2A channel access method is used to transmit S-SSB.
  • the Type 2A channel access method is used as much as possible;
  • the specific synchronization reference is GNSS, that is, the UE whose synchronization reference is GNSS adopts Type 2A;
  • the specific synchronization reference is a synchronization reference corresponding to a specific synchronization priority.
  • P3 i.e., P0 to P3
  • the UE adopts Type 2A.
  • the preset rule includes one of the following:
  • the Type 2A channel access method is used to transmit S-SSB;
  • Type 2A channel access method is used to transmit S-SSB.
  • the above-mentioned edge terminals and central terminals are determined based on the location of the terminal within the cell coverage or within the SL UE cluster;
  • a UE at a fixed location or a specific location uses a Type 2A channel to access and transmit S-SSB;
  • the UE is a UE located at the edge of a cluster.
  • the cluster edge UE is a UE whose received GNSS signal strength is lower than a predetermined threshold, or a UE whose received PSBCH-RSRP is lower than a predetermined threshold.
  • the UE is a UE located at the center of the cluster.
  • the UE at the center of the cluster is a UE whose received GNSS signal strength is higher than a predetermined threshold, or a UE whose received PSBCH-RSRP is higher than a predetermined threshold.
  • the crystal oscillator offset of the center UE is smaller, so the timing is more accurate, so the transmission of S-SSB should be guaranteed);
  • the number of S-SSBs transmitted using the Type 2A channel access method is not greater than the number threshold, or the total number of S-SSBs transmitted using the Type 2A channel access method accounts for not more than the total number percentage threshold;
  • the quantity threshold or the total number percentage threshold is predefined by the protocol or preconfigured by the network, or the quantity threshold or the total number percentage threshold is associated with the physical sidelink broadcast channel-reference signal received power PSBCH-RSRP received by the edge terminal or the central terminal.
  • the number or proportion of S-SSBs transmitted by UEs at different locations using Type 2A channels for access is different, for example:
  • the number or ratio of S-SSBs is (pre)configured by the protocol
  • the number or ratio of S-SSBs is related to the received PSBCH-RSRP strength, and the relationship between the two can be configured by RRC.
  • UEs with low received PSBCH-RSRP can use Type 2A channel access to transmit a larger number or a larger proportion of S-SSBs.
  • a UE with a high received PSBCH-RSRP e.g., a center UE
  • the preset rule includes:
  • the Type2A channel access mode is used to transmit the S-SSB;
  • the first synchronization resource is predefined by a protocol or preconfigured by a network.
  • the UE using specific synchronization resources adopts Type 2A;
  • a UE using synchronization resource 3 uses Type 2A
  • the preset rule includes:
  • the Type2A channel access mode is used to transmit S-SSB;
  • the second synchronization priority is predefined by the protocol or preconfigured by the network.
  • UEs with specific priorities use Type 2A;
  • the UE's own synchronization priority is equal to or higher than P3 (i.e., P0 to P3)
  • the UE adopts Type 2A
  • the method further includes:
  • the terminal transmits the second object using the Type 1 channel access mode
  • the second object includes S-SSB and/or PSFCH that do not meet the preset rules and have no shareable channel occupancy time COT.
  • the terminal uses the Type 1 channel access method to transmit S-SSB and/or PSFCH;
  • the terminal transmits the first object in a channel access mode of type 2A according to a preset rule, including:
  • the terminal transmits the first object using a channel access mode of type 2A according to a preset rule
  • the first observation period is predefined by a protocol or preconfigured by a network.
  • the above-mentioned terminal transmits the first object using a channel access method of type 2A according to preset rules, and all transmission operations are performed within a predefined or preconfigured observation period.
  • the total transmission duration within the above observation period may also be limited according to a ratio, for example, not exceeding 1/20 of the observation period;
  • Embodiment 1 is a diagrammatic representation of Embodiment 1:
  • the candidate transmission position may or may not include the candidate transmission position of additional S-SSB and/or PSFCH.
  • the candidate transmission position of additional S-SSB and/or PSFCH is an additional candidate transmission position of some S-SSB and/or PSFCH.
  • the above-mentioned candidate transmission position can be a candidate transmission position within an observation period (for example, 50ms), or a candidate transmission position within other time lengths, such as an S-SSB period, etc.
  • the total number of transmissions, total transmission duration, and single transmission duration of x1% of S-SSB and/or y1% of PSFCH shall not exceed 50, 2.5 ms, and 1 ms, respectively, within one observation period.
  • the statistical period of x1% and/or y1% may be one observation period or a system-configured/preconfigured period.
  • the total number of S-SSB transmissions, the total transmission duration, and the duration of a single transmission shall not exceed 50, 2.5 ms, and 1 ms, respectively, within an observation period.
  • Embodiment 2 is a diagrammatic representation of Embodiment 1:
  • Type 2A access channel When the UE uses Type 2A access channel and transmits according to the priority of S-SSB and/or PSFCH, after the high-priority transmission is completed, if there are remaining transmission times and remaining transmission time within an observation period, low-priority transmission can be performed.
  • the priority can be determined within a preset time window, such as an observation period, or a time window of other lengths.
  • the preset time window can be fixed, that is, a periodic time window, or a sliding time window. Assuming the preset time window is 50ms, the UE gives priority to transmissions with high priority within this 50ms and uses Type2A for channel access. If the preset time window is fixed, the UE will give priority to high-priority transmissions using Type2A for channel access in each 50ms period. If the preset time window is sliding, assuming the sliding granularity is 1ms, the UE will give priority to high-priority transmissions using Type2A for channel access in any 50ms.
  • the transmission method provided in the embodiment of the present application can be executed by a transmission device.
  • the transmission device provided in the embodiment of the present application is described by taking the transmission method executed by the transmission device as an example.
  • an embodiment of the present application provides a transmission device 300, which is applied to a terminal and includes:
  • Transmission module 301 configured for the terminal to transmit the first object using a channel access mode of type 2A according to a preset rule
  • the first object is S-SSB and/or PSFCH, and the preset rule is associated with at least one of the following:
  • the preset rule when the preset rule is associated with the transmission position of the first object, the preset rule includes:
  • Type2A channel access mode is used for transmission;
  • the first transmission position is predefined by a protocol or preconfigured by a network.
  • the preset rule when the preset rule is associated with the SCS of the first object, the preset rule includes:
  • Type2A channel access mode is used for transmission;
  • the first SCS is predefined by the protocol or preconfigured by the network.
  • the preset rule when the preset rule is associated with the number of the first objects or the proportion of the total number of the first objects, the preset rule includes:
  • Type2A channel access mode is used for transmission;
  • the N1, the x1, the M1, and the y1 are predefined by a protocol or preconfigured by a network.
  • the preset rule when the preset rule is associated with the priority of the first object, the preset rule includes at least one of the following:
  • S-SSB is preferred and Type2A channel access mode is used for transmission;
  • PSFCH is preferred and Type2A channel access mode is used for transmission;
  • Type2A channel access mode is used for transmission
  • the first priority is predefined by a protocol or preconfigured by a network.
  • the prioritizing of S-SSB and adopting Type2A channel access mode for transmission includes:
  • the first condition includes at least one of the following:
  • the number of S-SSB transmissions is not greater than a first preset number threshold
  • the duration of S-SSB transmission is not greater than the first preset duration threshold
  • the total duration of S-SSB transmission is not greater than the first preset total duration threshold
  • the number of S-SSBs transmitted is not greater than N2 or the proportion of the total number is not greater than x2%;
  • the first preset number threshold, the first preset time threshold, the first preset total time threshold, the N2, and the x2 are predefined by the protocol or preconfigured by the network.
  • the prioritizing of PSFCH and adopting Type2A channel access mode for transmission includes:
  • the second condition includes at least one of the following:
  • the number of PSFCH transmissions is not greater than a second preset number threshold
  • the duration of PSFCH transmission is not greater than the second preset duration threshold
  • the total duration of PSFCH transmission is not greater than the second preset total duration threshold
  • the number of transmitted PSFCHs is not greater than M2 or the total proportion is not greater than y2%;
  • the second preset number threshold, the second preset time threshold, the second preset total time threshold, the M2, and the y2 are predefined by the protocol or preconfigured by the network.
  • the transmission module is further used for:
  • the Type2A channel access method is used to transmit the PSFCH
  • the third preset number threshold, the third preset time threshold, and the third preset total time threshold are predefined by the protocol or preconfigured by the network.
  • the transmission module is further used for:
  • the Type2A channel access method is used to transmit S-SSB;
  • the fourth preset number threshold, the fourth preset duration threshold, and the fourth preset total duration threshold are predefined by the protocol or preconfigured by the network.
  • the preset rules also include:
  • the number of transmissions of S-SSB and PSFCH transmitted using Type 2A channel access mode is not greater than the fifth preset number threshold, the duration of S-SSB and PSFCH transmission is not greater than the fifth preset duration threshold, and the total duration of S-SSB and PSFCH transmission is not greater than the fifth preset total duration threshold;
  • the fifth preset number threshold, the fifth preset duration threshold, and the fifth preset total duration threshold are predefined by the protocol or preconfigured by the network.
  • the preset rules include: in order of priority, for S-SSB and/or PSFCH, when Type2A channel access method is used for transmission, the priority of S-SSB is predefined by the protocol or preconfigured by the network, the priority of PSFCH is the highest priority among the priorities of PSCCH and/or PSSCH associated with PSFCH, or the priority of PSFCH is predefined by the protocol or preconfigured by the network.
  • the preset rule includes:
  • Type2A channel access method is used to transmit S-SSB.
  • the preset rule when the preset rule is associated with the location of the terminal, the preset rule includes one of the following:
  • the S-SSB is transmitted using a Type 2A channel access mode
  • Type2A channel access method is used to transmit S-SSB.
  • the preset rules also include:
  • the quantity threshold or the total number percentage threshold is predefined by a protocol or preconfigured by a network, or the quantity threshold or the total number percentage threshold is associated with a physical sidelink broadcast channel-reference signal received power PSBCH-RSRP received by the edge terminal or the central terminal.
  • the preset rule includes:
  • Type2A channel access method is used to transmit S-SSB.
  • the preset rule includes:
  • the S-SSB is transmitted using a Type 2A channel access method
  • the first synchronization resource is predefined by a protocol or preconfigured by a network.
  • the preset rule includes:
  • the S-SSB is transmitted using the Type2A channel access mode
  • the second synchronization priority is predefined by a protocol or preconfigured by a network.
  • the transmission module is further used for:
  • the terminal transmits the second object using a channel access mode of type 1;
  • the second object includes S-SSB and/or PSFCH that does not meet the preset rule and has no shareable channel occupancy time COT.
  • the transmission module is further used for:
  • the terminal transmits the first object using a channel access mode of type 2A according to a preset rule
  • the first observation period is predefined by a protocol or preconfigured by a network.
  • the transmission device in the embodiment of the present application may be an electronic device, such as an electronic device with an operating system, or a component in an electronic device, such as an integrated circuit or a chip.
  • the electronic device may be a terminal, or may be other devices other than a terminal.
  • the terminal may include but is not limited to the types of terminal 11 listed above, and other devices may be servers, network attached storage (NAS), etc., which are not specifically limited in the embodiment of the present application.
  • the transmission device provided in the embodiment of the present application can implement each process implemented by the method embodiment of Figure 2 and achieve the same technical effect. To avoid repetition, it will not be repeated here.
  • the embodiment of the present application further provides a communication device 400, including a processor 401 and a memory 402, wherein the memory 402 stores a program or instruction that can be run on the processor 401.
  • the communication device 400 is a terminal
  • the program or instruction is executed by the processor 401 to implement the various steps of the above-mentioned transmission method embodiment, and can achieve the same technical effect.
  • the communication device 400 is a network side device
  • the program or instruction is executed by the processor 401 to implement the various steps of the above-mentioned transmission method embodiment, and can achieve the same technical effect. To avoid repetition, it will not be repeated here.
  • the embodiment of the present application further provides a terminal, including a processor and a communication interface, where the communication interface is used for the terminal to transmit a first object in a channel access mode of type 2A according to a preset rule;
  • the first object is a sidelink synchronization signal block S-SSB and/or a physical sidelink feedback channel PSFCH, and the preset rule is associated with at least one of the following:
  • the terminal embodiment corresponds to the above-mentioned terminal side method embodiment, and each implementation process and implementation mode of the above-mentioned method embodiment can be applied to the terminal embodiment and can achieve the same technical effect.
  • Figure 5 is a schematic diagram of the hardware structure of a terminal implementing the embodiment of the present application.
  • the terminal 500 includes but is not limited to: a radio frequency unit 501, a network module 502, an audio output unit 503, an input unit 504, a sensor 505, a display unit 506, a user input unit 507, an interface unit 508, a memory 509 and at least some of the components of a processor 510.
  • the terminal 500 may also include a power source (such as a battery) for supplying power to each component, and the power source may be logically connected to the processor 510 through a power management system, so that the power management system can manage charging, discharging, and power consumption management.
  • a power source such as a battery
  • the terminal structure shown in FIG5 does not constitute a limitation on the terminal, and the terminal may include more or fewer components than shown in the figure, or combine certain components, or arrange components differently, which will not be described in detail here.
  • the input unit 504 may include a graphics processor (GPU) 5041 and a microphone 5042, and the graphics processor 5041 processes the image data of the static picture or video obtained by the image capture device (such as a camera) in the video capture mode or the image capture mode.
  • the display unit 506 may include a display panel 5061, and the display panel 5061 may be configured in the form of a liquid crystal display, an organic light emitting diode, etc.
  • the user input unit 507 includes a touch panel 5071 and at least one of other input devices 5072.
  • the touch panel 5071 is also called a touch screen.
  • the touch panel 5071 may include two parts: a touch detection device and a touch controller.
  • Other input devices 5072 may include, but are not limited to, a physical keyboard, function keys (such as volume control keys, switch keys, etc.), track keys, etc. Trackball, mouse, joystick, no need to go into details here.
  • the radio frequency unit 501 after receiving downlink data from the network side device, can transmit the data to the processor 510 for processing; in addition, the radio frequency unit 501 can send uplink data to the network side device.
  • the radio frequency unit 501 includes but is not limited to an antenna, an amplifier, a transceiver, a coupler, a low noise amplifier, a duplexer, etc.
  • the memory 509 can be used to store software programs or instructions and various data.
  • the memory 509 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 instruction required for at least one function (such as a sound playback function, an image playback function, etc.), etc.
  • the memory 509 may include a volatile memory or a non-volatile memory, or the memory 509 may include both volatile and non-volatile memories.
  • the non-volatile memory may be a read-only memory (ROM), a programmable read-only memory (PROM), an erasable programmable read-only memory (EPROM), an electrically erasable programmable read-only memory (EEPROM), or a flash memory.
  • the volatile memory may be a random access memory (RAM), a static random access memory (SRAM), a dynamic random access memory (DRAM), a synchronous dynamic random access memory (SDRAM), a double data rate synchronous dynamic random access memory (DDRSDRAM), an enhanced synchronous dynamic random access memory (ESDRAM), a synchronous link dynamic random access memory (SLDRAM) and a direct memory bus random access memory (DRRAM).
  • the memory 509 in the embodiment of the present application includes but is not limited to these and any other suitable types of memory.
  • the processor 510 may include one or more processing units; optionally, the processor 510 integrates an application processor and a modem processor, wherein the application processor mainly processes operations related to an operating system, a user interface, and application programs, and the modem processor mainly processes wireless communication signals, such as a baseband processor. It is understandable that the modem processor may not be integrated into the processor 510.
  • the radio frequency unit 501 is used for the terminal to transmit the first object using a Type 2A channel access method according to a preset rule;
  • the first object is S-SSB and/or PSFCH, and the preset rule is associated with at least one of the following:
  • the preset rule when the preset rule is associated with the transmission position of the first object, the preset rule includes:
  • Type2A channel access mode is used for transmission;
  • the first transmission position is predefined by a protocol or preconfigured by a network.
  • the preset rule when the preset rule is associated with the SCS of the first object, the preset rule includes:
  • Type2A channel access mode is used for transmission;
  • the first SCS is predefined by the protocol or preconfigured by the network.
  • the preset rule when the preset rule is associated with the number of the first objects or the proportion of the total number of the first objects, the preset rule includes:
  • Type2A channel access mode is used for transmission;
  • the N1, the x1, the M1, and the y1 are predefined by a protocol or preconfigured by a network.
  • the preset rule when the preset rule is associated with the priority of the first object, the preset rule includes at least one of the following:
  • S-SSB is preferred and Type2A channel access mode is used for transmission;
  • PSFCH is preferred and Type2A channel access mode is used for transmission;
  • Type2A channel access mode is used for transmission
  • the first priority is predefined by a protocol or preconfigured by a network.
  • the prioritizing of S-SSB and adopting Type2A channel access mode for transmission includes:
  • the first condition includes at least one of the following:
  • the number of S-SSB transmissions is not greater than a first preset number threshold
  • the duration of S-SSB transmission is not greater than the first preset duration threshold
  • the total duration of S-SSB transmission is not greater than the first preset total duration threshold
  • the number of S-SSBs transmitted is not greater than N2 or the proportion of the total number is not greater than x2%;
  • the first preset number threshold, the first preset time threshold, the first preset total time threshold, the N2, and the x2 are predefined by the protocol or preconfigured by the network.
  • the prioritizing of PSFCH and adopting Type2A channel access mode for transmission includes:
  • the second condition includes at least one of the following:
  • the number of PSFCH transmissions is not greater than a second preset number threshold
  • the duration of PSFCH transmission is not greater than the second preset duration threshold
  • the total duration of PSFCH transmission is not greater than the second preset total duration threshold
  • the number of transmitted PSFCHs is not greater than M2 or the total proportion is not greater than y2%;
  • the second preset number threshold, the second preset duration threshold, the second preset total duration threshold, The M2 and the y2 are predefined by the protocol or preconfigured by the network.
  • the radio frequency unit 501 is further used for:
  • the Type2A channel access method is used to transmit the PSFCH
  • the third preset number threshold, the third preset time threshold, and the third preset total time threshold are predefined by the protocol or preconfigured by the network.
  • the radio frequency unit 501 is further used for:
  • Type2A channel access mode is used to transmit S-SSB;
  • the fourth preset number threshold, the fourth preset duration threshold, and the fourth preset total duration threshold are predefined by the protocol or preconfigured by the network.
  • the preset rules also include:
  • the number of transmissions of S-SSB and PSFCH transmitted using Type 2A channel access mode is not greater than the fifth preset number threshold, the duration of S-SSB and PSFCH transmission is not greater than the fifth preset duration threshold, and the total duration of S-SSB and PSFCH transmission is not greater than the fifth preset total duration threshold;
  • the fifth preset number threshold, the fifth preset duration threshold, and the fifth preset total duration threshold are predefined by the protocol or preconfigured by the network.
  • the preset rules include: in order of priority, for S-SSB and/or PSFCH, when Type2A channel access method is used for transmission, the priority of S-SSB is predefined by the protocol or preconfigured by the network, the priority of PSFCH is the highest priority among the priorities of PSCCH and/or PSSCH associated with PSFCH, or the priority of PSFCH is predefined by the protocol or preconfigured by the network.
  • the preset rule includes:
  • Type2A channel access method is used to transmit S-SSB.
  • the preset rule when the preset rule is associated with the location of the terminal, the preset rule includes one of the following:
  • the S-SSB is transmitted using a Type 2A channel access mode
  • Type2A channel access method is used to transmit S-SSB.
  • the preset rules also include:
  • the number of S-SSBs transmitted using the Type 2A channel access method is not greater than the number threshold, or the total number of S-SSBs transmitted using the Type 2A channel access method is not greater than the total number percentage threshold;
  • the quantity threshold or the total proportion threshold is predefined by the protocol or preconfigured by the network, or the quantity threshold or the total proportion threshold is consistent with the physical sidelink broadcast signal received by the edge terminal or the central terminal.
  • the channel-reference signal received power PSBCH-RSRP is associated.
  • the preset rule includes:
  • Type2A channel access method is used to transmit S-SSB.
  • the preset rule includes:
  • the S-SSB is transmitted using a Type 2A channel access method
  • the first synchronization resource is predefined by a protocol or preconfigured by a network.
  • the preset rule includes:
  • the S-SSB is transmitted using the Type2A channel access mode
  • the second synchronization priority is predefined by a protocol or preconfigured by a network.
  • the radio frequency unit 501 is further used for:
  • the terminal transmits the second object using a channel access mode of type 1;
  • the second object includes S-SSB and/or PSFCH that does not meet the preset rule and has no shareable channel occupancy time COT.
  • the radio frequency unit 501 is further used for:
  • the terminal transmits the first object using a channel access mode of type 2A according to a preset rule
  • the first observation period is predefined by a protocol or preconfigured by a network.
  • An embodiment of the present application also provides a readable storage medium, on which a program or instruction is stored.
  • a program or instruction is stored.
  • the various processes of the above-mentioned transmission method embodiment are implemented and the same technical effect can be achieved. To avoid repetition, it will not be repeated here.
  • the processor is the processor in the terminal described in the above embodiment.
  • the readable storage medium includes a computer readable storage medium, such as a computer read-only memory ROM, a random access memory RAM, a magnetic disk or an optical disk.
  • An embodiment of the present application further provides a chip, which includes 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 various processes of the above-mentioned transmission method embodiment, and can achieve the same technical effect. To avoid repetition, it will not be repeated here.
  • the chip mentioned in the embodiments of the present application can also be called a system-level chip, a system chip, a chip system or a system-on-chip chip, etc.
  • the embodiments of the present application further provide a computer program/program product, which is stored in a storage medium and is executed by at least one processor to implement the various processes of the above-mentioned transmission method embodiment and can achieve the same technical effect. To avoid repetition, it will not be repeated here.
  • An embodiment of the present application further provides a communication system, including: a terminal and a network side device, wherein the terminal can be used to execute the steps of the terminal side method as described above.
  • the technical solution of the present application can be embodied in the form of a computer software product, which is stored in a storage medium (such as ROM/RAM, magnetic disk, optical disk), and includes a number of instructions for a terminal (which can be a mobile phone, computer, server, air conditioner, or network equipment, etc.) to execute the methods described in each embodiment of the present application.
  • a storage medium such as ROM/RAM, magnetic disk, optical disk
  • a terminal which can be a mobile phone, computer, server, air conditioner, or network equipment, etc.

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  • Mobile Radio Communication Systems (AREA)

Abstract

La présente demande se rapporte au domaine technique des communications et divulgue un procédé et un dispositif de transmission et un support de stockage lisible. Le procédé comprend les étapes suivantes dans lesquelles : un terminal transmet des premiers objets à l'aide d'un mode d'accès à un canal de type 2A en fonction d'une règle prédéfinie, les premiers objets étant des S-SSB et/ou des PSFCH, et la règle prédéfinie étant associée à au moins l'un des éléments suivants : des positions de transmission des premiers objets ; des espacements de sous-porteuses (SCSs) des premiers objets ; le nombre de premiers objets ou la proportion du nombre total de premiers objets ; des priorités des premiers objets ; une source de synchronisation du terminal ; la position du terminal ; une ressource de synchronisation du terminal ; et une priorité de synchronisation du terminal.
PCT/CN2023/137743 2022-12-16 2023-12-11 Procédé et dispositif de transmission et support de stockage lisible WO2024125428A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CN202211623803.3 2022-12-16
CN202211623803.3A CN118215142A (zh) 2022-12-16 2022-12-16 传输方法、设备及可读存储介质

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WO2024125428A1 true WO2024125428A1 (fr) 2024-06-20

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WO (1) WO2024125428A1 (fr)

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