WO2024000531A1 - 一种循环前缀扩展cpe的发送方法及其装置 - Google Patents
一种循环前缀扩展cpe的发送方法及其装置 Download PDFInfo
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L27/00—Modulated-carrier systems
- H04L27/26—Systems using multi-frequency codes
- H04L27/2601—Multicarrier modulation systems
- H04L27/2602—Signal structure
- H04L27/2605—Symbol extensions, e.g. Zero Tail, Unique Word [UW]
- H04L27/2607—Cyclic extensions
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L5/00—Arrangements affording multiple use of the transmission path
- H04L5/003—Arrangements for allocating sub-channels of the transmission path
- H04L5/0053—Allocation of signaling, i.e. of overhead other than pilot signals
Definitions
- the present application relates to the field of communication technology, and in particular, to a method and device for sending cyclic prefix extension CPE.
- terminal sidelink (SL, also called direct link) communication has higher and higher performance requirements for transmission bandwidth, communication rate, communication delay, reliability, scalability and other performance requirements. is getting higher and higher, and limited licensed spectrum alone cannot meet the diverse application scenarios and needs in the future.
- SL-U sidelink-unlicensed terminal communication on unlicensed spectrum
- the acquired channel is not occupied by wireless fidelity equipment (Wireless Fidelity, WIFI), and is used Cyclic Prefix Extended (CPE) is used to occupy the channel in advance, but there is a lack of specific implementation of the use of CPE.
- WIFI wireless Fidelity
- CPE Cyclic Prefix Extended
- Embodiments of the present application provide a method and device for sending cyclic prefix extension CPE, which can be applied in the field of communication technology to send the CPE to the second terminal device before the first symbol of the first information sent by the first terminal device.
- the first information is the physical sidelink control channel PSCCH information, the physical sidelink shared channel PSSCH information, or the physical sidelink feedback channel PSFCH information; thereby ensuring the continuity of information transmission during the channel occupation time.
- embodiments of the present application provide a method for sending cyclic prefix extension CPE.
- the method is executed by a first terminal device.
- the method includes: in the first symbol of the first information sent by the first terminal device.
- the CPE was previously sent to the second terminal device; wherein the first information is physical sidelink control channel PSCCH information, physical sidelink shared channel PSSCH information, or physical sidelink feedback channel PSFCH information.
- the first information is PSCCH information or PSSCH information
- sending the CPE to the second terminal device before the first symbol of the first information sent by the first terminal device includes: : The CPE is sent at the first time interval before the first symbol of the first information sent by the first terminal device; wherein the first time interval is the end of the LBT performed by the first terminal device. The time interval between the position and the starting position of the first symbol.
- the first information is PSFCH information
- sending the CPE to the second terminal device before the first symbol of the first information sent by the first terminal device includes: The CPE is sent at a second time interval before the first symbol of the first information sent by the first terminal equipment; wherein, the second time interval is when the first terminal equipment sends the PSCCH information or the The time interval between the end position of the PSSCH information and the start position of the first symbol.
- the first terminal device shares the channel occupancy time COT initiated by the third terminal device, and the COT is initiated after the third terminal device performs type1 LBT.
- the first information is PSCCH information or PSSCH information
- sending the CPE to the second terminal device before the first symbol of the first information sent by the first terminal device includes: : The CPE is sent on the third time interval before the first symbol of the first information sent by the first terminal equipment; wherein, the third time interval is, the third terminal equipment sends the PSCCH information or the time interval between the end position of the PSSCH information and the start position of the first symbol.
- the first information is PSFCH information
- sending the CPE to the second terminal device before the first symbol of the first information sent by the first terminal device includes: The CPE is sent at a fourth time interval before the first symbol of the first information sent by the first terminal equipment; wherein, the fourth time interval is when the third terminal equipment sends the PSCCH information or the The time interval between the end position of the PSSCH information and the start position of the first symbol.
- embodiments of the present application provide a method for receiving cyclic prefix extension CPE.
- the method is executed by a second terminal device.
- the method includes: receiving the first symbol of the first information of the first terminal device before receiving it.
- the CPE sent by the first terminal device; wherein the first information is physical sidelink control channel PSCCH information, physical sidelink shared channel PSSCH information, or physical sidelink feedback channel PSFCH information.
- the first information is PSCCH information or PSSCH information; and the CPE sent by the first terminal device is received before receiving the first symbol of the first information of the first terminal device,
- the method includes: receiving the CPE at a first time interval before receiving the first symbol of the first information of the first terminal device; wherein the first time interval is when the first terminal device performs LBT. The time interval between the end position and the start position of the first symbol.
- the first information is PSFCH information
- receiving the CPE sent by the first terminal device before receiving the first symbol of the first information of the first terminal device includes: Receive the CPE at a second time interval before receiving the first symbol of the first information of the first terminal equipment; wherein the second time interval is when the first terminal equipment sends the PSCCH information or The time interval between the end position of the PSSCH information and the start position of the first symbol.
- the channel occupancy time COT is initiated after the third terminal device performs type1 LBT and is shared by the first terminal device.
- the first information is PSCCH information or PSSCH information
- the CPE sent by the first terminal device is received before receiving the first symbol of the first information of the first terminal device
- the method includes: receiving the CPE at a third time interval before receiving the first symbol of the first information of the first terminal device; wherein the third time interval is when the third terminal device sends the The time interval between the end position of the PSCCH information or the PSSCH information and the start position of the first symbol.
- the first information is PSFCH information
- receiving the CPE sent by the first terminal device before receiving the first symbol of the first information of the first terminal device includes: Receive the CPE at a fourth time interval before receiving the first symbol of the first information of the first terminal equipment; wherein the fourth time interval is when the third terminal equipment sends the PSCCH information or The time interval between the end position of the PSSCH information and the start position of the first symbol.
- embodiments of the present application provide a first terminal device that has some or all of the functions of the first terminal device in implementing the method described in the first aspect.
- the functions of the first terminal device can be It has the functions of some or all of the embodiments in this application, and may also have the function of independently implementing any one of the embodiments of this application.
- the functions described can be implemented by hardware, or can be implemented by hardware executing corresponding software.
- the hardware or software includes one or more units or modules corresponding to the above functions.
- the structure of the first terminal device may include a transceiver module and a processing module, and the processing module is configured to support the first terminal device to perform corresponding functions in the above method.
- the transceiver module is used to support communication between the first terminal device and other devices.
- the first terminal device may further include a storage module coupled to the transceiver module and the processing module, which stores necessary computer programs and data for the first terminal device.
- the processing module may be a processor
- the transceiver module may be a transceiver or a communication interface
- the storage module may be a memory
- embodiments of the present application provide a second terminal device that has some or all of the functions of the second terminal device in implementing the method described in the second aspect.
- the functions of the second terminal device can be It has the functions of some or all of the embodiments in this application, and may also have the function of independently implementing any one of the embodiments of this application.
- the functions described can be implemented by hardware, or can be implemented by hardware executing corresponding software.
- the hardware or software includes one or more units or modules corresponding to the above functions.
- the structure of the second terminal device may include a transceiver module and a processing module, and the processing module is configured to support the second terminal device to perform corresponding functions in the above method.
- the transceiver module is used to support communication between the second terminal device and other devices.
- the second terminal device may further include a storage module coupled to the transceiver module and the processing module, which stores necessary computer programs and data for the second terminal device.
- the processing module may be a processor
- the transceiver module may be a transceiver or a communication interface
- the storage module may be a memory
- inventions of the present application provide a communication device.
- the communication device includes a processor.
- the processor calls a computer program in a memory, it executes the method described in the first aspect.
- inventions of the present application provide a communication device.
- the communication device includes a processor.
- the processor calls a computer program in a memory, it executes the method described in the second aspect.
- inventions of the present application provide a communication device.
- the communication device includes a processor and a memory, and a computer program is stored in the memory; the processor executes the computer program stored in the memory, so that the communication device executes The method described in the first aspect above.
- inventions of the present application provide a communication device.
- the communication device includes a processor and a memory, and a computer program is stored in the memory; the processor executes the computer program stored in the memory, so that the communication device executes The method described in the second aspect above.
- inventions of the present application provide a communication device.
- the device includes a processor and an interface circuit.
- the interface circuit is used to receive code instructions and send them to the processor.
- the processor is used to run the code instructions to cause the The device performs the method described in the first aspect.
- inventions of the present application provide a communication device.
- the device includes a processor and an interface circuit.
- the interface circuit is used to receive code instructions and send them to the processor.
- the processor is used to run the code instructions to cause the The device performs the method described in the second aspect above.
- embodiments of the present application provide a communication system, which includes the first terminal device described in the third aspect and the second terminal device described in the fourth aspect, or the system includes the first terminal device described in the fifth aspect.
- the communication device and the communication device described in the sixth aspect, or the system includes the communication device described in the seventh aspect and the communication device described in the eighth aspect, or the system includes the communication device described in the ninth aspect and The communication device according to the tenth aspect.
- embodiments of the present invention provide a computer-readable storage medium for storing instructions used by the above-mentioned terminal equipment. When the instructions are executed, the terminal equipment is caused to execute the above-mentioned first aspect. method.
- embodiments of the present invention provide a computer-readable storage medium for storing instructions used by the above-mentioned terminal device. When the instructions are executed, the terminal device is caused to execute the above-mentioned second aspect. method.
- the present application also provides a computer program product including a computer program, which when run on a computer causes the computer to execute the method described in the first aspect.
- the present application also provides a computer program product including a computer program, which when run on a computer causes the computer to execute the method described in the second aspect.
- the present application provides a chip system, which includes at least one processor and an interface for supporting the terminal device to implement the functions involved in the first aspect, for example, determining or processing the data involved in the above method. and information.
- the chip system further includes a memory, and the memory is used to store necessary computer programs and data for the terminal device.
- the chip system may be composed of chips, or may include chips and other discrete devices.
- the present application provides a chip system, which includes at least one processor and an interface for supporting the terminal device to implement the functions involved in the second aspect, for example, determining or processing the data involved in the above method. and information.
- the chip system further includes a memory, and the memory is used to store necessary computer programs and data for the terminal device.
- the chip system may be composed of chips, or may include chips and other discrete devices.
- the present application provides a computer program that, when run on a computer, causes the computer to execute the method described in the first aspect.
- this application provides a computer program that, when run on a computer, causes the computer to execute the method described in the second aspect.
- Figure 1 is a schematic architectural diagram of a communication system provided by an embodiment of the present application.
- Figure 2 is a schematic flowchart of a method for sending cyclic prefix extension CPE provided by an embodiment of the present application
- FIG. 3 is a schematic flowchart of another method for sending cyclic prefix extension CPE provided by an embodiment of the present application
- Figure 4 is an example diagram in which the first terminal equipment sends CPE before the first symbol of the sent PSCCH information or PSSCH information;
- FIG. 5 is a schematic flowchart of another method for sending cyclic prefix extension CPE provided by an embodiment of the present application
- Figure 6 is an example diagram in which the first terminal equipment sends CPE before the first symbol of the sent PSFCH information
- Figure 7 is a schematic flowchart of another method for sending cyclic prefix extension CPE provided by an embodiment of the present application.
- Figure 8 is an example diagram of sending CPE before sending the first symbol of PSCCH information or PSSCH information when the first terminal equipment shares the COT initiated by the third terminal equipment;
- Figure 9 is a schematic flowchart of another method for sending cyclic prefix extension CPE provided by an embodiment of the present application.
- Figure 10 is an example diagram of sending CPE before sending the first symbol of PSFCH information when the first terminal device shares the COT initiated by the third terminal device;
- Figure 11 is a schematic flowchart of a method for receiving cyclic prefix extension CPE provided by an embodiment of the present application
- Figure 12 is a schematic structural diagram of a first terminal device provided by an embodiment of the present application.
- Figure 13 is a schematic structural diagram of a second terminal device provided by an embodiment of the present application.
- Figure 14 is a schematic structural diagram of a communication device provided by an embodiment of the present application.
- Figure 15 is a schematic structural diagram of a chip provided by an embodiment of the present application.
- Figure 1 is a schematic diagram of a communication system architecture provided by an embodiment of the present application.
- the communication system may include but is not limited to three terminal devices, where the terminal devices communicate through Sidelink.
- the number and form of equipment shown in Figure 1 are only examples and do not constitute a limitation on the embodiments of the present application.
- the communication system shown in FIG. 1 includes a first terminal device 101, a second terminal device 102, and a third terminal device 103 as an example.
- the first terminal device 101, the second terminal device 102 and the third terminal device 103 in the embodiment of the present application may each be an entity for receiving or transmitting signals, such as a mobile phone.
- Terminal equipment can also be called terminal equipment (terminal), user equipment (user equipment, UE), mobile station (mobile station, MS), mobile terminal equipment (mobile terminal, MT), etc.
- the terminal device can be a car with communication functions, a smart car, a mobile phone, a wearable device, a tablet computer (Pad), a computer with wireless transceiver functions, a virtual reality (VR) terminal device, an augmented reality (augmented reality (AR) terminal equipment, wireless terminal equipment in industrial control, wireless terminal equipment in self-driving, wireless terminal equipment in remote medical surgery, smart grid ( Wireless terminal equipment in smart grid, wireless terminal equipment in transportation safety, wireless terminal equipment in smart city, wireless terminal equipment in smart home, etc.
- the embodiments of this application do not limit the specific technology and specific equipment form used by the terminal equipment.
- terminal sidelink (SL, also called direct link) communication has higher and higher performance requirements for transmission bandwidth, communication rate, communication delay, reliability, scalability and other performance requirements. is getting higher and higher, and limited licensed spectrum alone cannot meet the diverse application scenarios and needs in the future.
- SL-U sidelink-unlicensed terminal communication on unlicensed spectrum
- the acquired channel is not occupied by wireless fidelity equipment (Wireless Fidelity, WIFI), and is used Cyclic Prefix Extended (CPE) is used to occupy the channel in advance, but there is a lack of specific implementation of the use of CPE.
- WIFI wireless Fidelity
- CPE Cyclic Prefix Extended
- Figure 2 is a schematic flowchart of a method for sending cyclic prefix extension CPE provided by an embodiment of the present application. It should be noted that the method for sending the cyclic prefix extension CPE in the embodiment of the present application can be executed by the first terminal device, and the first terminal device can be any terminal device. As shown in Figure 2, the method for sending the cyclic prefix extension CPE may include but is not limited to the following steps.
- Step S201 Send the CPE to the second terminal device before the first symbol of the first information sent by the first terminal device; wherein the first information is Physical Sidelink Control Channel (PSCCH) information, and the physical side Line shared channel (Physical Sidelink Shared Channel, PSSCH) information, or physical side link feedback channel (Physical Sidelink Feedback Channel, PSFCH) information.
- PSCCH Physical Sidelink Control Channel
- PSSCH Physical Sidelink Shared Channel
- PSFCH Physical Sidelink Feedback Channel
- the first terminal device does not share the channel occupancy time COT initiated by the third terminal device. In one example, the first terminal device initiates the COT and does not share it with other terminal devices. In another example, the first terminal device initiates COT and shares it with other terminal devices.
- the first terminal device when the first terminal device does not share the channel occupancy time COT initiated by the third terminal device, the first terminal device uses a period of channel occupancy time alone; or, the channel occupancy time is before the first terminal device sends the first information. There is no other terminal device sending or receiving information.
- the first terminal device when the first terminal device initiates COT and is not shared with other terminal devices, the first terminal device uses a channel occupancy time alone. When the first terminal device initiates COT and shares it with other terminal devices, no other terminal device sends information or receives information before the first terminal device sends the first information during the channel occupancy time.
- the channel occupancy time may be a period of channel occupancy time initiated by the first terminal device after executing type1 LBT. Due to the existing R16/R17 sidelink time slot structure, the transmission of information can only start from the starting symbol of 1 time slot. Therefore, the end position of the first terminal device performing LBT is the same as the first information of the first terminal device. There is a period of time between the starting positions (for example, gap symbol). This time interval is used to send CPE, which can ensure the continuity of information transmission during the channel occupation time.
- the first terminal device when the first terminal device sends or receives information, there will be a period of time between the end position of the sent information and the starting position of the received information. This time interval is used to send the CPE, which can ensure that the channel occupancy time is high. Continuity of information transmission.
- the first terminal device shares the channel occupancy time COT initiated by the third terminal device; the third terminal device initiates COT after completing type1 LBT.
- the first terminal device shares the channel occupancy time COT initiated by the third terminal device
- the first terminal device and the third terminal device share a period of channel occupancy time
- the first terminal device, the third terminal device and the third terminal device share the channel occupancy time.
- the other terminal devices of the COT initiated by the three terminal devices share a channel occupancy time.
- a CPE needs to be sent to ensure that the information is transmitted during the channel occupancy time.
- Continuity For example, if the information of the third terminal device is sent after the information of the first terminal device is sent, there will be a period of time between the end position of the information of the third terminal device and the starting position of the information of the first terminal device. This time interval Used to send CPE to ensure the continuity of information transmission during the channel occupation time.
- the information sent by the first terminal device and the information sent by the third terminal device may be the same or different.
- the first terminal device sends the CPE to the second terminal device before the first symbol of the sent first information; wherein the first information is the physical sidelink control channel PSCCH information. , physical sidelink shared channel PSSCH information, or physical sidelink feedback channel PSFCH information, thereby ensuring that there is no idle time interval in the channel occupancy time and ensuring the continuity of information transmission in the channel occupancy time.
- Figure 3 is a schematic flowchart of another method for sending cyclic prefix extension CPE provided by an embodiment of the present application. It should be noted that the method for sending the cyclic prefix extension CPE in the embodiment of the present application can be executed by the first terminal device, and the first terminal device can be any terminal device that does not share the channel occupancy time COT initiated by the third terminal device. Wherein, the third terminal device is any terminal device except the first terminal device.
- the sending method of the cyclic prefix extension CPE can be executed alone, or can be executed in combination with any embodiment in the present application or the possible implementation methods in the embodiment, or in combination with any of the related technologies. Technical solutions are implemented together.
- the method for sending the cyclic prefix extension CPE may include but is not limited to the following steps.
- Step S301 Send the CPE to the second terminal device at the first time interval before the first symbol of the PSCCH information or PSSCH information sent by the first terminal device; wherein the first time interval is when the first terminal device performs LBT. The time interval between the end position and the starting position of the first symbol; the first terminal device does not share the COT initiated by the third terminal device.
- the first terminal device when the first terminal device does not share the channel occupancy time COT initiated by the third terminal device, the first terminal device uses a period of channel occupancy time alone; or, the first terminal device performs a third channel occupancy time on the channel occupancy time. There is no other terminal device sending information or receiving information before the information is sent. Wherein, when the first terminal device initiates COT and is not shared with other terminal devices, the first terminal device uses a channel occupancy time alone. When the first terminal device initiates COT and shares it with other terminal devices, no other terminal device sends information or receives information before the first terminal device sends the first information during the channel occupancy time.
- the channel occupancy time may be a period of channel occupancy time initiated by the first terminal device after executing type1 LBT. Due to the existing R16/R17 sidelink time slot structure, the transmission of information can only start from the starting symbol of 1 time slot. Therefore, the end position of the first terminal device performing LBT is the same as the first information of the first terminal device. There is a period of time between the starting positions (for example, gap symbol). This time interval is used to send CPE, which can ensure the continuity of information transmission during the channel occupation time.
- the first symbol of the physical sidelink control channel (Physical Sidelink Control Channel, PSCCH) information or the physical sidelink shared channel (Physical Sidelink Shared Channel, PSSCH) information may be an AGC symbol, for example. It should be noted that the PSCCH information and the PSSCH information are sent using different subcarriers or the same subcarrier on the same channel. Therefore, the first symbols of the PSCCH information and the PSSCH information are the same.
- PSCCH Physical Sidelink Control Channel
- PSSCH Physical Sidelink Shared Channel
- FIG 4 it is an example diagram in which the first terminal equipment sends the CPE before the first symbol of the sent PSCCH information or PSSCH information.
- the first symbol of the PSCCH information or PSSCH information sent by the first terminal equipment is the AGC symbol, which is located at the starting position of the time slot Slotn+1 in Figure 4.
- the first terminal device executes Type1 LBT, and the end position after successful LBT is the rear position in the time slot Slotn.
- the first time interval between the end position of the LBT of the first terminal device and the start position of the first symbol is shown as GP in Figure 4.
- the first terminal device may first initiate the CPE and occupy the first time interval to send the CPE.
- PSCCH information or PSSCH information is sent.
- the first terminal device sends the CPE to the second terminal device at the first time interval before the first symbol of the sent PSCCH information or PSSCH information; wherein, the first time The interval is the time interval between the end position of the first terminal device performing LBT and the starting position of the first symbol; the first terminal device does not share the COT initiated by the third terminal device; thus ensuring that the channel occupancy time does not exist
- the idle time interval ensures the continuity of information transmission during the channel occupation time.
- Figure 5 is a schematic flowchart of another method for sending cyclic prefix extension CPE provided by an embodiment of the present application. It should be noted that the method for sending the cyclic prefix extension CPE in the embodiment of the present application can be executed by the first terminal device, and the first terminal device can be any terminal device that does not share the channel occupancy time COT initiated by the third terminal device.
- the sending method of the cyclic prefix extension CPE can be executed alone, or can be executed in combination with any embodiment in the present application or the possible implementation methods in the embodiment, or in combination with any of the related technologies. Technical solutions are implemented together.
- the method for sending the cyclic prefix extension CPE may include but is not limited to the following steps.
- Step S501 Send the CPE to the second terminal device at the second time interval before the first symbol of the PSFCH information sent by the first terminal device; wherein, the second time interval is when the first terminal device sends PSCCH information or PSSCH information. The time interval between the end position and the start position of the first symbol; the first terminal device does not share the COT initiated by the third terminal device.
- the first terminal device when the first terminal device does not share the channel occupancy time COT initiated by the third terminal device, the first terminal device uses a period of channel occupancy time alone; or, the first terminal device performs a third channel occupancy time on the channel occupancy time. There is no other terminal device sending information or receiving information before the information is sent. Wherein, when the first terminal device initiates COT and is not shared with other terminal devices, the first terminal device uses a channel occupancy time alone. When the first terminal device initiates COT and shares it with other terminal devices, no other terminal device sends information or receives information before the first terminal device sends the first information during the channel occupancy time.
- the channel occupancy time may be a period of channel occupancy time initiated by the first terminal device after executing type1 LBT.
- the first terminal device sends information or receives information during the channel occupancy time, there will be a period of time between the end position of the sent information (for example, PSCCH information or PSSCH information) and the starting position of the received information. , that is, the second time interval; the first terminal device sends the CPE to the second terminal device at the second time interval, which can ensure the continuity of information transmission during the channel occupation time.
- the sent information and the received information can be different information.
- the received information may be, for example, Physical Sidelink Feedback Channel (PSFCH) information.
- PSFCH Physical Sidelink Feedback Channel
- FIG. 6 it is an example diagram in which the first terminal device sends the CPE before the first symbol of the sent PSFCH information.
- the first symbol of the PSFCH information sent by the first terminal device is the AGC symbol, as shown by the AGC in Slot1 in Figure 6.
- the end position of the PSCCH information or PSSCH information sent by the first terminal device is as shown in Figure 6.
- the second time interval between the end position of the PSCCH information or PSSCH information sent by the first terminal device and the start position of the first symbol is shown as GP in Figure 6.
- the first terminal device may first initiate the CPE and occupy the second time interval to send the CPE.
- PSFCH information is sent.
- the first terminal device sends the CPE to the second terminal device at the second time interval before the first symbol of the sent PSFCH information; wherein, the second time interval is, The time interval between the end position of the first terminal device sending PSCCH information or PSSCH information and the starting position of the first symbol; the first terminal device does not share the COT initiated by the third terminal device; thus ensuring that the channel occupancy time is consistent There is an idle time interval to ensure the continuity of information transmission during the channel occupation time.
- Figure 7 is a schematic flowchart of another method for sending cyclic prefix extension CPE provided by an embodiment of the present application.
- the method for sending the cyclic prefix extension CPE in this embodiment of the present application can be executed by the first terminal device, and the first terminal device can be any terminal device that shares the channel occupancy time COT initiated by the third terminal device.
- the third terminal device is a terminal device other than the first terminal device, and the third terminal device initiates COT after completing type1LBT.
- the sending method of the cyclic prefix extension CPE can be executed alone, or can be executed in combination with any embodiment in the present application or the possible implementation methods in the embodiment, or in combination with any of the related technologies. Technical solutions are implemented together.
- the method for sending the cyclic prefix extension CPE may include but is not limited to the following steps.
- Step S701 Send the CPE to the second terminal device at the third time interval before the first symbol of the PSCCH information or PSSCH information sent by the first terminal device; wherein the third time interval is, the third terminal device sends the PSCCH information Or the time interval between the end position of the PSSCH information and the starting position of the first symbol; the first terminal device shares the COT initiated by the third terminal device.
- the first terminal device shares the channel occupancy time COT initiated by the third terminal device
- the first terminal device and the third terminal device share a period of channel occupancy time; or, the first terminal device, the third terminal device
- the terminal equipment and other terminal equipment sharing the COT initiated by the third terminal equipment share a period of channel occupancy time.
- the first terminal device sends the CPE at the third time interval, which can ensure the continuity of information transmission during the channel occupation time.
- the information of the first terminal device and the information of the third terminal device may be the same.
- the information of the third terminal device and the information of the first terminal device may be PSCCH information or PSSCH information.
- the third terminal device if the third terminal device initiates COT after executing type1 LBT, the third time interval needs to meet a specific value, such as 16us; if the third terminal device initiates COT after executing type2 LBT, then the third The time interval needs to meet a specific value, such as 25us.
- type2 LBT such as type2A LBT, type2B LBT, type2C LBT, etc.
- the information may be sent by the third terminal device or the information of other terminal devices may be sent.
- Other terminal devices are, for example, any terminal device other than the first terminal device that shares the COT initiated by the third terminal device.
- the CPE is sent before sending the first symbol of the PSCCH information or the PSSCH information.
- the third terminal device that initiates COT may be UE1, and the first terminal device may be UE2 or UE3.
- UE2 determines the distance between the end position of UE1's information and the starting position of UE2's information based on the type of LBT specified by UE1, such as type2A, type2B, type2C, etc.
- the third time interval needs to meet a specific value, such as 25us.
- the third time interval is shown as GP in Slotn+2 in Figure 8 .
- UE2 needs to send CPE at the third time interval until it reaches the starting position of UE2's information.
- the information of UE1 and the information of UE2 may be PSCCH information or PSSCH information.
- the first symbol at the starting position of the information of UE2 may be an AGC symbol, for example.
- FIG. 8 taking the first terminal device as UE3 as an example, there is a third time interval between the end position of the information of UE2 and the start position of the information of UE3.
- the third time interval is shown as GP in Slotn+5 in Figure 8 .
- UE3 needs to send CPE at the third time interval until it reaches the starting position of UE3's information.
- the information of UE2 and the information of UE3 may be PSCCH information or PSSCH information.
- the first symbol at the starting position of the information of UE3 may be an AGC symbol, for example.
- the first terminal device sends the CPE to the second terminal device at the third time interval before the first symbol of the sent PSCCH information or PSSCH information; wherein, the third time The interval is the time interval between the end position of the third terminal device sending PSCCH information or PSSCH information and the starting position of the first symbol; the first terminal device shares the COT initiated by the third terminal device; thereby ensuring the channel occupancy time There is no idle time interval, ensuring the continuity of information transmission during the channel occupation time.
- Figure 9 is a schematic flowchart of another method for sending cyclic prefix extension CPE provided by an embodiment of the present application.
- the cyclic prefix extension CPE sending method in the embodiment of the present application can be applied to the first terminal device, and the first terminal device can be any terminal device that shares the channel occupancy time COT initiated by the third terminal device.
- the third terminal device is a terminal device other than the first terminal device, and the third terminal device initiates COT after completing type1LBT.
- the sending method of the cyclic prefix extension CPE can be executed alone, or can be executed in combination with any embodiment in the present application or the possible implementation methods in the embodiment, or in combination with any of the related technologies. Technical solutions are implemented together.
- the method for sending the cyclic prefix extension CPE may include but is not limited to the following steps.
- Step S901 Send the CPE to the second terminal device at the fourth time interval before the first symbol of the PSFCH information sent by the first terminal device; wherein, the fourth time interval is when the third terminal device sends PSCCH information or PSSCH information. The time interval between the end position and the start position of the first symbol; the first terminal device shares the COT initiated by the second terminal device.
- the first terminal device shares the channel occupancy time COT initiated by the second terminal device
- the first terminal device and the third terminal device share a period of channel occupancy time; or, the first terminal device, the third terminal device
- the terminal equipment and other terminal equipment sharing the COT initiated by the third terminal equipment share a period of channel occupancy time.
- the first terminal device when different terminal devices use a certain amount of time to send information during the channel occupancy time, there will be a period of time between the positions of the information of different terminal devices, and CPE needs to be sent to ensure the transmission of information during the channel occupancy time. continuity. For example, if the information of the first terminal device is sent after the information of the third terminal device is sent, there will be a period of time between the end position of the information of the third terminal device and the starting position of the information of the first terminal device, that is, the third terminal device Four time intervals; the first terminal device sends the CPE at the fourth time interval, which can ensure the continuity of information transmission during the channel occupancy time.
- the information of the first terminal device and the information of the third terminal device may be different.
- the information of the third terminal device may be PSCCH information or PSSCH information.
- the information of the first terminal device may be PSFCH information.
- the information may be sent by the third terminal device or the information of other terminal devices may be sent.
- Other terminal devices are, for example, any terminal device other than the first terminal device that shares the COT initiated by the third terminal device.
- the CPE is sent before sending the first symbol of the PSFCH information.
- the third terminal device initiating COT may be UE1, and the first terminal device may be UE2.
- UE1 sends information on slot0 to slot2.
- PSFCH resources are configured on slot2, and UE2 needs to send PSFCH information using the PSFCH resources configured on slot2.
- UE2 needs to send the cyclic prefix extension on the fourth time interval until it reaches the starting position of the PSFCH information of UE2.
- the information of UE1 may be PSCCH information or PSSCH information.
- the first symbol at the starting position of the PSFCH information of UE2 may be an AGC symbol, for example.
- the first terminal device sends the CPE to the second terminal device at the fourth time interval before the first symbol of the PSFCH information sent by the first terminal device; wherein, the fourth time interval The time interval is the time interval between the end position of the third terminal device sending PSCCH information or PSSCH information and the starting position of the first symbol; the first terminal device shares the COT initiated by the third terminal device; thereby ensuring channel occupancy There is no idle time interval in time, ensuring the continuity of information transmission during the channel occupation time.
- Figure 11 is a schematic flowchart of a method for receiving cyclic prefix extension CPE provided by an embodiment of the present application. It should be noted that the method for receiving the cyclic prefix extension CPE in the embodiment of the present application can be performed by a second terminal device, and the second terminal device is a terminal device that communicates with the first terminal device. As shown in Figure 11, the receiving method of the cyclic prefix extension CPE may include but is not limited to the following steps.
- Step S1101 Receive the CPE sent by the first terminal device before receiving the first symbol of the first information of the first terminal device; wherein the first information is Physical Sidelink Control Channel (PSCCH) information, physical Sidelink shared channel (Physical Sidelink Shared Channel, PSSCH) information, or physical sidelink feedback channel (Physical Sidelink Feedback Channel, PSFCH) information.
- PSCCH Physical Sidelink Control Channel
- PSSCH Physical Sidelink shared channel
- PSFCH Physical Sidelink Feedback Channel
- the first terminal device does not share the channel occupancy time COT initiated by the third terminal device. In one example, the first terminal device initiates the COT and does not share it with other terminal devices. In another example, the first terminal device initiates COT and shares it with other terminal devices.
- the first terminal device when the first terminal device does not share the channel occupancy time COT initiated by the third terminal device, the first terminal device uses a period of channel occupancy time alone; or, the channel occupancy time is before the first terminal device sends the first information. There is no other terminal device sending or receiving information.
- the first terminal device when the first terminal device initiates COT and is not shared with other terminal devices, the first terminal device uses a channel occupancy time alone. When the first terminal device initiates COT and shares it with other terminal devices, no other terminal device sends information or receives information before the first terminal device sends the first information during the channel occupancy time.
- the first information is PSCCH information, or PSSCH information.
- the process of step S1101 performed by the second terminal device may be, for example, receiving the CPE at the first time interval before receiving the first symbol of the first information of the first terminal device; wherein the first time interval is, The time interval between the end position of the LBT performed by a terminal device and the start position of the first symbol.
- the first information is PSFCH information.
- the process of the second terminal device performing step S1101 may be, for example, receiving the CPE at the second time interval before receiving the first symbol of the first information of the first terminal device; wherein the second time interval is, The time interval between the end position of a terminal device sending PSCCH information or PSSCH information and the start position of the first symbol.
- the first terminal device shares the channel occupancy time COT initiated by the third terminal device; the third terminal device initiates COT after completing type1 LBT.
- the first terminal device shares the channel occupancy time COT initiated by the third terminal device
- the first terminal device and the third terminal device share a period of channel occupancy time
- the first terminal device, the third terminal device and the third terminal device share the channel occupancy time.
- the other terminal devices of the COT initiated by the three terminal devices share a channel occupancy time.
- the first information is PSCCH information or PSSCH information.
- the process of step S1101 performed by the second terminal device may be, for example, receiving the CPE at the third time interval before receiving the first symbol of the first information of the first terminal device; wherein the third time interval is, 3. The time interval between the end position of the terminal equipment sending PSCCH information or PSSCH information and the start position of the first symbol.
- the first information is PSFCH information.
- the process of step S1101 performed by the second terminal device may be, for example, receiving the CPE at the fourth time interval before receiving the first symbol of the first information of the first terminal device; wherein the fourth time interval is, 3. The time interval between the end position of the terminal equipment sending PSCCH information or PSSCH information and the start position of the first symbol.
- the information may be sent by the third terminal device or the information of other terminal devices may be sent.
- Other terminal devices are, for example, any terminal device other than the first terminal device that shares the COT initiated by the third terminal device.
- the second terminal device receives the CPE sent by the first terminal device before receiving the first symbol of the first information of the first terminal device; wherein the first information is the physical side Line control channel PSCCH information, physical side-link shared channel PSSCH information, or physical side-link feedback channel PSFCH information, thereby ensuring that there is no idle time interval in the channel occupancy time and ensuring the continuity of information transmission in the channel occupancy time.
- the first information is the physical side Line control channel PSCCH information, physical side-link shared channel PSSCH information, or physical side-link feedback channel PSFCH information
- the method provided by the embodiments of the present application is introduced from the perspective of a terminal device.
- the first terminal device may include a hardware structure and a software module to implement the above functions in the form of a hardware structure, a software module, or a hardware structure plus a software module. Some of the above functions can be executed by a hardware structure, a software module, or a hardware structure plus a software module.
- the first terminal device 120 includes: a transceiver unit 1201, configured to send the CPE to the second terminal device before the first symbol of the first information sent by the first terminal device; wherein, the first information It is the physical sidelink control channel PSCCH information, the physical sidelink shared channel PSSCH information, or the physical sidelink feedback channel PSFCH information.
- the first terminal device does not share the channel occupancy time COT initiated by the third terminal device.
- the first information is PSCCH information or PSSCH information
- the transceiver unit 1201 is specifically configured to: at the first time before the first symbol of the first information sent by the first terminal device
- the CPE is sent at intervals; wherein the first time interval is the time interval between the end position of the first terminal device performing LBT and the starting position of the first symbol.
- the first information is PSFCH information
- the transceiver unit 1201 is specifically configured to send the first symbol in the second time interval before the first symbol of the first information sent by the first terminal device.
- the CPE wherein the second time interval is the time interval between the end position of the first terminal device sending the PSCCH information or the PSSCH information and the starting position of the first symbol.
- the first terminal device shares the channel occupancy time COT initiated by the third terminal device, and the third terminal device initiates the COT after completing type1 LBT.
- the first information is PSCCH information or PSSCH information
- the transceiver unit 1201 is specifically configured to perform the third time before the first symbol of the first information sent by the first terminal device.
- the CPE is sent at intervals; wherein the third time interval is the time between the end position where the third terminal device sends the PSCCH information or the PSSCH information and the starting position of the first symbol. time interval.
- the first information is PSFCH information
- the transceiver unit 1201 is specifically configured to send the first symbol in the fourth time interval before the first symbol of the first information sent by the first terminal device.
- the CPE wherein the fourth time interval is the time interval between the end position of the PSCCH information or the PSSCH information sent by the third terminal equipment and the starting position of the first symbol.
- the second terminal device 130 includes: a transceiver unit 1301, configured to receive the CPE sent by the first terminal device before receiving the first symbol of the first information of the first terminal device; wherein, the first The information is physical sidelink control channel PSCCH information, physical sidelink shared channel PSSCH information, or physical sidelink feedback channel PSFCH information.
- a transceiver unit 1301 configured to receive the CPE sent by the first terminal device before receiving the first symbol of the first information of the first terminal device; wherein, the first The information is physical sidelink control channel PSCCH information, physical sidelink shared channel PSSCH information, or physical sidelink feedback channel PSFCH information.
- the first terminal device does not share the channel occupancy time COT initiated by the third terminal device.
- the first information is PSCCH information, or PSSCH information;
- the transceiver unit 1301 is specifically configured to receive the first symbol before receiving the first information of the first terminal device.
- the CPE is received at a time interval; wherein the first time interval is the time interval between the end position of the first terminal device performing LBT and the start position of the first symbol.
- the first information is PSFCH information
- the transceiver unit 1301 is specifically configured to receive the first symbol of the first information of the first terminal device at the second time interval before receiving the first symbol.
- the CPE wherein the second time interval is the time interval between the end position of the first terminal device sending the PSCCH information or the PSSCH information and the starting position of the first symbol.
- the first terminal device shares the channel occupancy time COT initiated by the third terminal device, and the third terminal device initiates the COT after completing type1 LBT.
- the first information is PSCCH information or PSSCH information
- the transceiver unit 1301 is specifically configured to receive the first symbol of the first information of the first terminal device at the third time The CPE is received at intervals; wherein the third time interval is the time between the end position of the third terminal device sending the PSCCH information or the PSSCH information and the starting position of the first symbol. time interval.
- the first information is PSFCH information
- the transceiver unit 1301 is specifically configured to receive the first symbol of the first information of the first terminal device at the fourth time interval before receiving the first symbol.
- the CPE wherein the fourth time interval is the time interval between the end position of the PSCCH information or the PSSCH information sent by the third terminal equipment and the starting position of the first symbol.
- FIG 14 is a schematic structural diagram of another communication device 140 provided by an embodiment of the present application.
- the communication device 140 may be a terminal device (such as the first terminal device or the second terminal device in the foregoing method embodiment), or may be a chip, chip system, or processor that supports the terminal device to implement the above method.
- the device can be used to implement the method described in the above method embodiment. For details, please refer to the description in the above method embodiment.
- Communication device 140 may include one or more processors 1401.
- the processor 1401 may be a general-purpose processor or a special-purpose processor, or the like.
- it can be a baseband processor or a central processing unit.
- the baseband processor can be used to process communication protocols and communication data.
- the central processor can be used to control communication devices (such as base stations, baseband chips, terminal equipment, terminal equipment chips, DU or CU, etc.) and execute computer programs. , processing data for computer programs.
- the communication device 140 may also include one or more memories 1402, on which a computer program 1404 may be stored.
- the processor 1401 executes the computer program 1404, so that the communication device 140 performs the steps described in the above method embodiments. method.
- the memory 1402 may also store data.
- the communication device 140 and the memory 1402 can be provided separately or integrated together.
- the communication device 140 may also include a transceiver 1405 and an antenna 1406.
- the transceiver 1405 may be called a transceiver unit, a transceiver, a transceiver circuit, etc., and is used to implement transceiver functions.
- the transceiver 1405 may include a receiver and a transmitter.
- the receiver may be called a receiver or a receiving circuit, etc., used to implement the receiving function;
- the transmitter may be called a transmitter, a transmitting circuit, etc., used to implement the transmitting function.
- the communication device 140 may also include one or more interface circuits 1407.
- the interface circuit 1407 is used to receive code instructions and transmit them to the processor 1401 .
- the processor 1401 executes the code instructions to cause the communication device 140 to perform the method described in the above method embodiment.
- the communication device 140 is a terminal device (such as the first terminal device in the aforementioned method embodiment): the transceiver 1405 is used to perform step S201 in Figure 2; perform step S301 in Figure 3; step S501 in Figure 5; Figure 7 Step S701 in Figure 9; Step S901 in Figure 9.
- the communication device 140 is a terminal device (such as the second terminal device in the aforementioned method embodiment): the transceiver 1405 is used to perform step S1101 in FIG. 11 .
- the processor 1401 may include a transceiver for implementing receiving and transmitting functions.
- the transceiver may be a transceiver circuit, an interface, or an interface circuit.
- the transceiver circuits, interfaces or interface circuits used to implement the receiving and transmitting functions can be separate or integrated together.
- the above-mentioned transceiver circuit, interface or interface circuit can be used for reading and writing codes/data, or the above-mentioned transceiver circuit, interface or interface circuit can be used for signal transmission or transfer.
- the processor 1401 may store a computer program 1404, and the computer program 1404 runs on the processor 1401, causing the communication device 140 to perform the method described in the above method embodiment.
- the computer program 1404 may be solidified in the processor 1401, in which case the processor 1401 may be implemented by hardware.
- the communication device 140 may include a circuit, which may implement the functions of sending or receiving or communicating in the foregoing method embodiments.
- the processor and transceiver described in this application can be implemented in integrated circuits (ICs), analog ICs, radio frequency integrated circuits RFICs, mixed signal ICs, application specific integrated circuits (ASICs), printed circuit boards ( printed circuit board (PCB), electronic equipment, etc.
- the processor and transceiver can also be manufactured using various IC process technologies, such as complementary metal oxide semiconductor (CMOS), n-type metal oxide-semiconductor (NMOS), P-type Metal oxide semiconductor (positive channel metal oxide semiconductor, PMOS), bipolar junction transistor (BJT), bipolar CMOS (BiCMOS), silicon germanium (SiGe), gallium arsenide (GaAs), etc.
- CMOS complementary metal oxide semiconductor
- NMOS n-type metal oxide-semiconductor
- PMOS P-type Metal oxide semiconductor
- BJT bipolar junction transistor
- BiCMOS bipolar CMOS
- SiGe silicon germanium
- GaAs gallium arsenide
- the communication device described in the above embodiments may be a terminal device (such as the first terminal device or the second terminal device in the aforementioned method embodiment), but the scope of the communication device described in this application is not limited thereto, and the communication device The structure may not be limited by Figure 14.
- the communication device may be a stand-alone device or may be part of a larger device.
- the communication device may be:
- the IC collection may also include storage components for storing data and computer programs;
- the communication device may be a chip or a chip system
- the schematic structural diagram of the chip shown in FIG. 15 refer to the schematic structural diagram of the chip shown in FIG. 15 .
- the chip shown in Figure 15 includes a processor 1501 and an interface 1502.
- the number of processors 1501 may be one or more, and the number of interfaces 1502 may be multiple.
- the chip also includes a memory 1503, which is used to store necessary computer programs and data.
- An embodiment of the present application also provides a communication system, which includes the first terminal device in the aforementioned embodiment of FIG. 12 and the second terminal device in the aforementioned embodiment of FIG. 13 .
- This application also provides a readable storage medium on which instructions are stored. When the instructions are executed by a computer, the functions of any of the above method embodiments are implemented.
- This application also provides a computer program product, which, when executed by a computer, implements the functions of any of the above method embodiments.
- the above embodiments it may be implemented in whole or in part by software, hardware, firmware, or any combination thereof.
- software it may be implemented in whole or in part in the form of a computer program product.
- the computer program product includes one or more computer programs.
- the computer program When the computer program is loaded and executed on a computer, the processes or functions described in the embodiments of the present application are generated in whole or in part.
- the computer may be a general-purpose computer, a special-purpose computer, a computer network, or other programmable device.
- the computer program may be stored in or transferred from one computer-readable storage medium to another, for example, the computer program may be transferred from a website, computer, server, or data center Transmission to another website, computer, server or data center through wired (such as coaxial cable, optical fiber, digital subscriber line (DSL)) or wireless (such as infrared, wireless, microwave, etc.) means.
- the computer-readable storage medium may be any available medium that can be accessed by a computer or a data storage device such as a server, data center, etc. that contains one or more available media integrated.
- the usable media may be magnetic media (e.g., floppy disks, hard disks, magnetic tapes), optical media (e.g., high-density digital video discs (DVD)), or semiconductor media (e.g., solid state disks, SSD)) etc.
- magnetic media e.g., floppy disks, hard disks, magnetic tapes
- optical media e.g., high-density digital video discs (DVD)
- DVD digital video discs
- semiconductor media e.g., solid state disks, SSD
- At least one in this application can also be described as one or more, and the plurality can be two, three, four or more, which is not limited by this application.
- the technical feature is distinguished by “first”, “second”, “third”, “A”, “B”, “C” and “D”, etc.
- the technical features described in “first”, “second”, “third”, “A”, “B”, “C” and “D” are in no particular order or order.
- the corresponding relationships shown in each table in this application can be configured or predefined.
- the values of the information in each table are only examples and can be configured as other values, which are not limited by this application.
- the corresponding relationships shown in some rows may not be configured.
- appropriate deformation adjustments can be made based on the above table, such as splitting, merging, etc.
- the names of the parameters shown in the titles of the above tables may also be other names understandable by the communication device, and the values or expressions of the parameters may also be other values or expressions understandable by the communication device.
- other data structures can also be used, such as arrays, queues, containers, stacks, linear lists, pointers, linked lists, trees, graphs, structures, classes, heaps, hash tables or hash tables. wait.
- Predefinition in this application can be understood as definition, pre-definition, storage, pre-storage, pre-negotiation, pre-configuration, solidification, or pre-burning.
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Abstract
本申请实施例公开了一种循环前缀扩展CPE的发送方法及其装置,可以应用于通信技术领域,该方法包括:第一终端设备在发送的第一信息的第一个符号之前向第二终端设备发送CPE;其中,第一信息为物理侧行控制信道PSCCH信息,物理侧行共享信道PSSCH信息,或者,物理侧行反馈信道PSFCH信息,从而能够确保信道占用时间上不存在空闲的时间间隔,确保信道占用时间上信息传输的连续性。
Description
本申请涉及通信技术领域,尤其涉及一种循环前缀扩展CPE的发送方法及其装置。
随着新的通信业务及应用需求的不断产生,终端侧行(Sidelink,SL,也叫直连链路)通信对传输带宽、通信速率、通信时延、可靠性、可扩展性等性能要求越来越高,仅靠有限的授权频谱无法满足未来多样化的应用场景及需求。目前,在非授权频谱上的终端侧行通信(sidelink-unlicensed,SL-U)上,为了保证数据传输的连续性,获取的信道不被无线保真设备(Wireless Fidelity,WIFI)占用,而使用循环前缀扩展(Cyclic Prefix Extended,CPE)来提前占用信道,但缺少CPE的使用的具体实现。
发明内容
本申请实施例提供一种循环前缀扩展CPE的发送方法及其装置,可以应用于通信技术领域,以实现在第一终端设备发送的第一信息的第一个符号之前向第二终端设备发送CPE;其中,第一信息为物理侧行控制信道PSCCH信息,物理侧行共享信道PSSCH信息,或者物理侧行反馈信道PSFCH信息;从而确保信道占用时间上信息传输的连续性。
第一方面,本申请实施例提供一种循环前缀扩展CPE的发送方法,所述方法由第一终端设备执行,该方法包括:在所述第一终端设备发送的第一信息的第一个符号之前向第二终端设备发送所述CPE;其中,所述第一信息为物理侧行控制信道PSCCH信息,物理侧行共享信道PSSCH信息,或者物理侧行反馈信道PSFCH信息。
在一种实现方式中,所述第一信息为PSCCH信息或者PSSCH信息;所述在所述第一终端设备发送的第一信息的第一个符号之前向第二终端设备发送所述CPE,包括:在所述第一终端设备发送的第一信息的第一个符号之前的第一时间间隔上发送所述CPE;其中,所述第一时间间隔为,所述第一终端设备执行LBT的结束位置与所述第一个符号的起始位置之间的时间间隔。
在一种实现方式中,所述第一信息为PSFCH信息;所述在所述第一终端设备发送的第一信息的第一个符号之前向第二终端设备发送所述CPE,包括:在所述第一终端设备发送的第一信息的第一个符号之前的第二时间间隔上发送所述CPE;其中,所述第二时间间隔为,所述第一终端设备发送所述PSCCH信息或者所述PSSCH信息的结束位置与所述第一个符号的起始位置之间的时间间隔。
在一种实现方式中,所述第一终端设备共享第三终端设备发起的信道占用时间COT,所述COT是所述第三终端设备执行type1 LBT后发起的。
在一种实现方式中,所述第一信息为PSCCH信息或者PSSCH信息;所述在所述第一终端设备发送的第一信息的第一个符号之前向第二终端设备发送所述CPE,包括:在所述第一终端设备发送的第一信息的第一个符号之前的第三时间间隔上发送所述CPE;其中,所述第三时间间隔为,所述第三终端设备发送所述PSCCH信息或者所述PSSCH信息的结束位 置与所述第一个符号的起始位置之间的时间间隔。
在一种实现方式中,所述第一信息为PSFCH信息;所述在所述第一终端设备发送的第一信息的第一个符号之前向第二终端设备发送所述CPE,包括:在所述第一终端设备发送的第一信息的第一个符号之前的第四时间间隔上发送所述CPE;其中,所述第四时间间隔为,所述第三终端设备发送所述PSCCH信息或者所述PSSCH信息的结束位置与所述第一个符号的起始位置之间的时间间隔。
第二方面,本申请实施例提供一种循环前缀扩展CPE的接收方法,所述方法由第二终端设备执行,该方法包括:在接收第一终端设备的第一信息的第一个符号之前接收所述第一终端设备发送的所述CPE;其中,所述第一信息为物理侧行控制信道PSCCH信息,物理侧行共享信道PSSCH信息,或者物理侧行反馈信道PSFCH信息。
在一种实现方式中,所述第一信息为PSCCH信息或者PSSCH信息;所述在接收第一终端设备的第一信息的第一个符号之前接收所述第一终端设备发送的所述CPE,包括:在接收所述第一终端设备的第一信息的第一个符号之前的第一时间间隔上接收所述CPE;其中,所述第一时间间隔为,所述第一终端设备执行LBT的结束位置与所述第一个符号的起始位置之间的时间间隔。
在一种实现方式中,所述第一信息为PSFCH信息;所述在接收第一终端设备的第一信息的第一个符号之前接收所述第一终端设备发送的所述CPE,包括:在接收所述第一终端设备的第一信息的第一个符号之前的第二时间间隔上接收所述CPE;其中,所述第二时间间隔为,所述第一终端设备发送所述PSCCH信息或者所述PSSCH信息的结束位置与所述第一个符号的起始位置之间的时间间隔。
在一种实现方式中,信道占用时间COT是所述第三终端设备执行type1 LBT后发起的,并且被所述第一终端设备共享的。
在一种实现方式中,所述第一信息为PSCCH信息或者PSSCH信息;所述在接收第一终端设备的第一信息的第一个符号之前接收所述第一终端设备发送的所述CPE,包括:在接收所述第一终端设备的第一信息的第一个符号之前的第三时间间隔上接收所述CPE;其中,所述第三时间间隔为,所述第三终端设备发送所述PSCCH信息或者所述PSSCH信息的结束位置与所述第一个符号的起始位置之间的时间间隔。
在一种实现方式中,所述第一信息为PSFCH信息;所述在接收第一终端设备的第一信息的第一个符号之前接收所述第一终端设备发送的所述CPE,包括:在接收所述第一终端设备的第一信息的第一个符号之前的第四时间间隔上接收所述CPE;其中,所述第四时间间隔为,所述第三终端设备发送所述PSCCH信息或者所述PSSCH信息的结束位置与所述第一个符号的起始位置之间的时间间隔。
第三方面,本申请实施例提供一种第一终端设备,该第一终端设备具有实现上述第一方面所述的方法中第一终端设备的部分或全部功能,比如第一终端设备的功能可具备本申请中的部分或全部实施例中的功能,也可以具备单独实施本申请中的任一个实施例的功能。所述功能可以通过硬件实现,也可以通过硬件执行相应的软件实现。所述硬件或软件包括 一个或多个与上述功能相对应的单元或模块。
在一种实现方式中,该第一终端设备的结构中可包括收发模块和处理模块,所述处理模块被配置为支持第一终端设备执行上述方法中相应的功能。所述收发模块用于支持第一终端设备与其他设备之间的通信。所述第一终端设备还可以包括存储模块,所述存储模块用于与收发模块和处理模块耦合,其保存第一终端设备必要的计算机程序和数据。
作为示例,处理模块可以为处理器,收发模块可以为收发器或通信接口,存储模块可以为存储器。
第四方面,本申请实施例提供一种第二终端设备,该第二终端设备具有实现上述第二方面所述的方法中第二终端设备的部分或全部功能,比如第二终端设备的功能可具备本申请中的部分或全部实施例中的功能,也可以具备单独实施本申请中的任一个实施例的功能。所述功能可以通过硬件实现,也可以通过硬件执行相应的软件实现。所述硬件或软件包括一个或多个与上述功能相对应的单元或模块。
在一种实现方式中,该第二终端设备的结构中可包括收发模块和处理模块,所述处理模块被配置为支持第二终端设备执行上述方法中相应的功能。所述收发模块用于支持第二终端设备与其他设备之间的通信。所述第二终端设备还可以包括存储模块,所述存储模块用于与收发模块和处理模块耦合,其保存第二终端设备必要的计算机程序和数据。
作为示例,处理模块可以为处理器,收发模块可以为收发器或通信接口,存储模块可以为存储器。
第五方面,本申请实施例提供一种通信装置,该通信装置包括处理器,当该处理器调用存储器中的计算机程序时,执行上述第一方面所述的方法。
第六方面,本申请实施例提供一种通信装置,该通信装置包括处理器,当该处理器调用存储器中的计算机程序时,执行上述第二方面所述的方法。
第七方面,本申请实施例提供一种通信装置,该通信装置包括处理器和存储器,该存储器中存储有计算机程序;所述处理器执行该存储器所存储的计算机程序,以使该通信装置执行上述第一方面所述的方法。
第八方面,本申请实施例提供一种通信装置,该通信装置包括处理器和存储器,该存储器中存储有计算机程序;所述处理器执行该存储器所存储的计算机程序,以使该通信装置执行上述第二方面所述的方法。
第九方面,本申请实施例提供一种通信装置,该装置包括处理器和接口电路,该接口电路用于接收代码指令并发送至该处理器,该处理器用于运行所述代码指令以使该装置执行上述第一方面所述的方法。
第十方面,本申请实施例提供一种通信装置,该装置包括处理器和接口电路,该接口电路用于接收代码指令并发送至该处理器,该处理器用于运行所述代码指令以使该装置执行上述第二方面所述的方法。
第十一方面,本申请实施例提供一种通信系统,该系统包括第三方面所述的第一终端设备以及第四方面所述的第二终端设备,或者,该系统包括第五方面所述的通信装置以及第六方面所述的通信装置,或者,该系统包括第七方面所述的通信装置以及第八方面所述的通信装置,或者,该系统包括第九方面所述的通信装置以及第十方面所述的通信装置。
第十二方面,本发明实施例提供一种计算机可读存储介质,用于储存为上述终端设备所用的指令,当所述指令被执行时,使所述终端设备执行上述第一方面所述的方法。
第十三方面,本发明实施例提供一种计算机可读存储介质,用于储存为上述终端设备所用的指令,当所述指令被执行时,使所述终端设备执行上述第二方面所述的方法。
第十四方面,本申请还提供一种包括计算机程序的计算机程序产品,当其在计算机上运行时,使得计算机执行上述第一方面所述的方法。
第十五方面,本申请还提供一种包括计算机程序的计算机程序产品,当其在计算机上运行时,使得计算机执行上述第二方面所述的方法。
第十六方面,本申请提供一种芯片系统,该芯片系统包括至少一个处理器和接口,用于支持终端设备实现第一方面所涉及的功能,例如,确定或处理上述方法中所涉及的数据和信息中的至少一种。在一种可能的设计中,所述芯片系统还包括存储器,所述存储器,用于保存终端设备必要的计算机程序和数据。该芯片系统,可以由芯片构成,也可以包括芯片和其他分立器件。
第十七方面,本申请提供一种芯片系统,该芯片系统包括至少一个处理器和接口,用于支持终端设备实现第二方面所涉及的功能,例如,确定或处理上述方法中所涉及的数据和信息中的至少一种。在一种可能的设计中,所述芯片系统还包括存储器,所述存储器,用于保存终端设备必要的计算机程序和数据。该芯片系统,可以由芯片构成,也可以包括芯片和其他分立器件。
第十八方面,本申请提供一种计算机程序,当其在计算机上运行时,使得计算机执行上述第一方面所述的方法。
第十九方面,本申请提供一种计算机程序,当其在计算机上运行时,使得计算机执行上述第二方面所述的方法。
为了更清楚地说明本申请实施例或背景技术中的技术方案,下面将对本申请实施例或背景技术中所需要使用的附图进行说明。
图1是本申请实施例提供的一种通信系统的架构示意图;
图2是本申请实施例提供的一种循环前缀扩展CPE的发送方法的流程示意图;
图3是本申请实施例提供的另一种循环前缀扩展CPE的发送方法的流程示意图;
图4为第一终端设备在发送的PSCCH信息或者PSSCH信息的第一个符号之前发送CPE的示例图;
图5是本申请实施例提供的另一种循环前缀扩展CPE的发送方法的流程示意图;
图6为第一终端设备在发送的PSFCH信息的第一个符号之前发送CPE的示例图;
图7是本申请实施例提供的另一种循环前缀扩展CPE的发送方法的流程示意图;
图8为第一终端设备共享第三终端设备发起的COT时,在发送PSCCH信息或者PSSCH信息的第一个符号之前发送CPE的示例图;
图9是本申请实施例提供的另一种循环前缀扩展CPE的发送方法的流程示意图;
图10为第一终端设备共享第三终端设备发起的COT时,在发送PSFCH信息的第一个符 号之前发送CPE的示例图;
图11是本申请实施例提供的一种循环前缀扩展CPE的接收方法的流程示意图;
图12是本申请实施例提供的一种第一终端设备的结构示意图;
图13是本申请实施例提供的一种第二终端设备的结构示意图;
图14是本申请实施例提供的一种通信装置的结构示意图;
图15是本申请实施例提供的一种芯片的结构示意图。
下面详细描述本申请的实施例,所述实施例的示例在附图中示出,其中自始至终相同或类似的标号表示相同或类似的元件或具有相同或类似功能的元件。下面通过参考附图描述的实施例是示例性的,旨在用于解释本申请,而不能理解为对本申请的限制。其中,在本申请的描述中,除非另有说明,“/”表示或的意思,例如,A/B可以表示A或B;本文中的“和/或”仅仅是一种描述关联对象的关联关系,表示可以存在三种关系,例如,A和/或B,可以表示:单独存在A,同时存在A和B,单独存在B这三种情况。
为了更好的理解本申请实施例公开的一种循环前缀扩展CPE的发送方法,下面首先对本申请实施例适用的通信系统进行描述。
请参见图1,图1为本申请实施例提供的一种通信系统架构示意图。该通信系统可以包括但不限于三个终端设备,其中,终端设备之间通过Sidelink通信。图1所示的设备数量和形态仅用于举例并不构成对本申请实施例的限定。图1所示的通信系统以包括第一终端设备101、第二终端设备102和第三终端设备103为例。
本申请实施例中的第一终端设备101、第二终端设备102和第三终端设备103可以分别是一种用于接收或发射信号的实体,如手机。终端设备也可以称为终端设备(terminal)、用户设备(user equipment,UE)、移动台(mobile station,MS)、移动终端设备(mobile terminal,MT)等。终端设备可以是具备通信功能的汽车、智能汽车、手机(mobile phone)、穿戴式设备、平板电脑(Pad)、带无线收发功能的电脑、虚拟现实(virtual reality,VR)终端设备、增强现实(augmented reality,AR)终端设备、工业控制(industrial control)中的无线终端设备、无人驾驶(self-driving)中的无线终端设备、远程手术(remote medical surgery)中的无线终端设备、智能电网(smart grid)中的无线终端设备、运输安全(transportation safety)中的无线终端设备、智慧城市(smart city)中的无线终端设备、智慧家庭(smart home)中的无线终端设备等等。本申请的实施例对终端设备所采用的具体技术和具体设备形态不做限定。
可以理解的是,本申请实施例描述的通信系统是为了更加清楚的说明本申请实施例的技术方案,并不构成对于本申请实施例提供的技术方案的限定,本领域普通技术人员可知,随着系统架构的演变和新业务场景的出现,本申请实施例提供的技术方案对于类似的技术问题,同样适用。
随着新的通信业务及应用需求的不断产生,终端侧行(Sidelink,SL,也叫直连链路)通信对传输带宽、通信速率、通信时延、可靠性、可扩展性等性能要求越来越高,仅靠有限的授权频谱无法满足未来多样化的应用场景及需求。目前,在非授权频谱上的终端侧行 通信(sidelink-unlicensed,SL-U)上,为了保证数据传输的连续性,获取的信道不被无线保真设备(Wireless Fidelity,WIFI)占用,而使用循环前缀扩展(Cyclic Prefix Extended,CPE)来提前占用信道,但缺少CPE的使用的具体实现。
下面结合附图对本申请所提供的循环前缀扩展CPE的发送方法及其装置进行详细地介绍。
请参见图2,图2是本申请实施例提供的一种循环前缀扩展CPE的发送方法的流程示意图。需要说明的是,本申请实施例的循环前缀扩展CPE的发送方法可由第一终端设备执行,第一终端设备可以为任意一个终端设备。如图2所示,该循环前缀扩展CPE的发送方法可以包括但不限于如下步骤。
步骤S201,在第一终端设备发送的第一信息的第一个符号之前向第二终端设备发送CPE;其中,第一信息为物理侧行控制信道(Physical Sidelink Control Channel,PSCCH)信息,物理侧行共享信道(Physical Sidelink Shared Channel,PSSCH)信息,或者物理侧行反馈信道(Physical Sidelink Feedback Channel,PSFCH)信息。
在本申请实施例中,一些实施例中,第一终端设备未共享第三终端设备发起的信道占用时间COT。其中,一种示例中,第一终端设备发起COT,且未共享给其他终端设备。另一种示例中,第一终端设备发起COT,且共享给其他终端设备。
其中,第一终端设备未共享第三终端设备发起的信道占用时间COT的情况下,第一终端设备单独使用一段信道占用时间;或者,信道占用时间上第一终端设备进行第一信息的发送之前未存在其他终端设备发送信息或者接收信息。其中,在第一终端设备发起COT,且未共享给其他终端设备的情况下,第一终端设备单独使用一段信道占用时间。在第一终端设备发起COT,且共享给其他终端设备的情况下,信道占用时间上第一终端设备进行第一信息的发送之前未存在其他终端设备发送信息或者接收信息。
其中,信道占用时间可以为第一终端设备通过执行type1 LBT后发起的一段信道占用时间。由于现有的R16/R17 sidelink时隙结构,信息的发送只能从1个时隙的起始符号开始发送,所以,在第一终端设备执行LBT的结束位置与第一终端设备的第一信息的起始位置之间存在一段时间间隔(例如,间隙符号gap symbol),该时间间隔用于发送CPE,可以确保信道占用时间上信息传输的连续性。
其中,在第一终端设备发送信息或者接收信息的情况下,发送信息的结束位置与接收信息的起始位置之间会存在一段时间间隔,该时间间隔用于发送CPE,可以确保信道占用时间上信息传输的连续性。
另一些实施例中,第一终端设备共享第三终端设备发起的信道占用时间COT;第三终端设备在执行完type1 LBT后发起COT。
其中,第一终端设备共享第三终端设备发起的信道占用时间COT的情况下,第一终端设备和第三终端设备共享一段信道占用时间;或者,第一终端设备、第三终端设备以及共享第三终端设备发起的COT的其它终端设备共享一段信道占用时间。
其中,不同终端设备在该段信道占用时间上使用一定时间进行信息发送的情况下,不同终端设备的信息的位置之间会存在一段时间间隔,需要发送CPE,以确保信道占用时间上信息传输的连续性。例如,第三终端设备的信息发送后进行第一终端设备信息的发送, 则第三终端设备的信息的结束位置与第一终端设备的信息的起始位置之间存在一段时间间隔,该时间间隔用于发送CPE,可以确保信道占用时间上信息传输的连续性。其中,第一终端设备发送的信息和第三终端设备发送的信息可以相同或者不同。
本申请实施例的循环前缀扩展CPE的发送方法,第一终端设备在发送的第一信息的第一个符号之前向第二终端设备发送CPE;其中,第一信息为物理侧行控制信道PSCCH信息,物理侧行共享信道PSSCH信息,或者物理侧行反馈信道PSFCH信息,从而能够确保信道占用时间上不存在空闲的时间间隔,确保信道占用时间上信息传输的连续性。
需要说明的是,上述的这些可能的实现方式可以单独被执行,也可以结合在一起被执行,本申请实施例并不对此作出限定。
请参见图3,图3是本申请实施例提供的另一种循环前缀扩展CPE的发送方法的流程示意图。需要说明的是,本申请实施例的循环前缀扩展CPE的发送方法可由第一终端设备执行,第一终端设备可以为未共享第三终端设备发起的信道占用时间COT的任意一个终端设备。其中,第三终端设备为除第一终端设备之外的任意一个终端设备。
其中,该循环前缀扩展CPE的发送方法可以单独被执行,也可以结合本申请中的任一个实施例或是实施例中的可能的实现方式一起被执行,还可以结合相关技术中的任一种技术方案一起被执行。
如图3所示,该循环前缀扩展CPE的发送方法可以包括但不限于如下步骤。
步骤S301,在第一终端设备发送的PSCCH信息或者PSSCH信息的第一个符号之前的第一时间间隔上向第二终端设备发送CPE;其中,第一时间间隔为,第一终端设备执行LBT的结束位置与第一个符号的起始位置之间的时间间隔;第一终端设备未共享第三终端设备发起的COT。
在本申请实施例中,第一终端设备未共享第三终端设备发起的信道占用时间COT的情况下,第一终端设备单独使用一段信道占用时间;或者,信道占用时间上第一终端设备进行第一信息的发送之前未存在其他终端设备发送信息或者接收信息。其中,在第一终端设备发起COT,且未共享给其他终端设备的情况下,第一终端设备单独使用一段信道占用时间。在第一终端设备发起COT,且共享给其他终端设备的情况下,信道占用时间上第一终端设备进行第一信息的发送之前未存在其他终端设备发送信息或者接收信息。
其中,信道占用时间可以为第一终端设备通过执行type1 LBT后发起的一段信道占用时间。由于现有的R16/R17 sidelink时隙结构,信息的发送只能从1个时隙的起始符号开始发送,所以,在第一终端设备执行LBT的结束位置与第一终端设备的第一信息的起始位置之间存在一段时间间隔(例如,间隙符号gap symbol),该时间间隔用于发送CPE,可以确保信道占用时间上信息传输的连续性。
其中,物理侧行控制信道(Physical Sidelink Control Channel,PSCCH)信息或者物理侧行共享信道(Physical Sidelink Shared Channel,PSSCH)信息的第一个符号例如可以为AGC符号。其中,需要说明的是,PSCCH信息和PSSCH信息,使用相同信道上的不同子载波或者相同子载波进行发送,因此,PSCCH信息和PSSCH信息的第一个符号相同。
其中,如图4所示,为第一终端设备在发送的PSCCH信息或者PSSCH信息的第一个 符号之前发送CPE的示例图。在图4中,第一终端设备发送的PSCCH信息或者PSSCH信息的第一个符号为AGC符号,位于图4中时隙Slotn+1的起始位置。在图4中,第一终端设备执行Type1 LBT,LBT成功后的结束位置为时隙Slotn中的靠后位置。第一终端设备的LBT的结束位置与第一个符号的起始位置之间的第一时间间隔,如图4中的GP所示。则在PSCCH信息或者PSSCH信息的第一个符号之前,第一终端设备可以先发起CPE,占用第一时间间隔发送CPE。在时隙Slotn+1的起始位置到达时,进行PSCCH信息或者PSSCH信息的发送。
本申请实施例的循环前缀扩展CPE的发送方法,第一终端设备在发送的PSCCH信息或者PSSCH信息的第一个符号之前的第一时间间隔上向第二终端设备发送CPE;其中,第一时间间隔为,第一终端设备执行LBT的结束位置与第一个符号的起始位置之间的时间间隔;第一终端设备未共享第三终端设备发起的COT;从而能够确保信道占用时间上不存在空闲的时间间隔,确保信道占用时间上信息传输的连续性。
请参见图5,图5是本申请实施例提供的另一种循环前缀扩展CPE的发送方法的流程示意图。需要说明的是,本申请实施例的循环前缀扩展CPE的发送方法可由第一终端设备执行,第一终端设备可以为未共享第三终端设备发起的信道占用时间COT的任意一个终端设备。
其中,该循环前缀扩展CPE的发送方法可以单独被执行,也可以结合本申请中的任一个实施例或是实施例中的可能的实现方式一起被执行,还可以结合相关技术中的任一种技术方案一起被执行。
如图5所示,该循环前缀扩展CPE的发送方法可以包括但不限于如下步骤。
步骤S501,在第一终端设备发送的PSFCH信息的第一个符号之前的第二时间间隔上向第二终端设备发送CPE;其中,第二时间间隔为,第一终端设备发送PSCCH信息或者PSSCH信息的结束位置与第一个符号的起始位置之间的时间间隔;第一终端设备未共享第三终端设备发起的COT。
在本申请实施例中,第一终端设备未共享第三终端设备发起的信道占用时间COT的情况下,第一终端设备单独使用一段信道占用时间;或者,信道占用时间上第一终端设备进行第一信息的发送之前未存在其他终端设备发送信息或者接收信息。其中,在第一终端设备发起COT,且未共享给其他终端设备的情况下,第一终端设备单独使用一段信道占用时间。在第一终端设备发起COT,且共享给其他终端设备的情况下,信道占用时间上第一终端设备进行第一信息的发送之前未存在其他终端设备发送信息或者接收信息。
其中,信道占用时间可以为第一终端设备通过执行type1 LBT后发起的一段信道占用时间。其中,在第一终端设备在该信道占用时间上发送信息或者接收信息的情况下,发送信息(例如,PSCCH信息或者PSSCH信息)的结束位置与接收信息的起始位置之间会存在一段时间间隔,即第二时间间隔;第一终端设备在第二时间间隔上向第二终端设备发送CPE,可以确保信道占用时间上信息传输的连续性。其中,发送的信息和接收的信息可以为不同的信息。其中,接收的信息例如可以为物理侧行反馈信道(Physical Sidelink Feedback Channel,PSFCH)信息。
其中,如图6所示,为第一终端设备在发送的PSFCH信息的第一个符号之前发送CPE的示例图。在图6中,第一终端设备发送的PSFCH信息的第一个符号为AGC符号,如图6中Slot1中的AGC所示。第一终端设备发送的PSCCH信息或者PSSCH信息的结束位置如图6中Slot1中PSSCH的结束位置所示。第一终端设备发送的PSCCH信息或者PSSCH信息的结束位置与第一个符号的起始位置之间的第二时间间隔,如图6中的GP所示。则在PSCCH信息或者PSSCH信息的结束位置之后,PSFCH信息的第一个符号之前,第一终端设备可以先发起CPE,占用第二时间间隔发送CPE。在到达Slot1中的AGC所在位置时,进行PSFCH信息的发送。
本申请实施例的循环前缀扩展CPE的发送方法,第一终端设备在发送的PSFCH信息的第一个符号之前的第二时间间隔上向第二终端设备发送CPE;其中,第二时间间隔为,第一终端设备发送PSCCH信息或者PSSCH信息的结束位置与第一个符号的起始位置之间的时间间隔;第一终端设备未共享第三终端设备发起的COT;从而能够确保信道占用时间上不存在空闲的时间间隔,确保信道占用时间上信息传输的连续性。
请参见图7,图7是本申请实施例提供的另一种循环前缀扩展CPE的发送方法的流程示意图。需要说明的是,本申请实施例的循环前缀扩展CPE的发送方法可由第一终端设备执行,第一终端设备可以为共享第三终端设备发起的信道占用时间COT的任意一个终端设备。其中,第三终端设备为除第一终端设备之外的终端设备,且第三终端设备在执行完type1LBT后发起COT。
其中,该循环前缀扩展CPE的发送方法可以单独被执行,也可以结合本申请中的任一个实施例或是实施例中的可能的实现方式一起被执行,还可以结合相关技术中的任一种技术方案一起被执行。
如图7所示,该循环前缀扩展CPE的发送方法可以包括但不限于如下步骤。
步骤S701,在第一终端设备发送的PSCCH信息或者PSSCH信息的第一个符号之前的第三时间间隔上向第二终端设备发送CPE;其中,第三时间间隔为,第三终端设备发送PSCCH信息或者PSSCH信息的结束位置与第一个符号的起始位置之间的时间间隔;第一终端设备共享第三终端设备发起的COT。
在本申请实施例中,第一终端设备共享第三终端设备发起的信道占用时间COT的情况下,第一终端设备和第三终端设备共享一段信道占用时间;或者,第一终端设备、第三终端设备以及共享第三终端设备发起的COT的其它终端设备共享一段信道占用时间。
其中,不同终端设备在该段信道占用时间上使用一定时间进行信息的发送的情况下,不同终端设备的信息的位置之间会存在一段时间间隔,需要发送CPE,以确保信道占用时间上信息传输的连续性。例如,第三终端设备的信息发送后进行第一终端设备信息的发送,则第三终端设备的信息的结束位置与第一终端设备的信息的起始位置之间存在一段时间间隔,即第三时间间隔;第一终端设备在第三时间间隔上发送CPE,可以确保信道占用时间上信息传输的连续性。其中,第一终端设备的信息和第三终端设备的信息可以相同。
其中,第三终端设备的信息和第一终端设备的信息可以为PSCCH信息或者PSSCH信息。
其中,若第三终端设备是在执行完type1 LBT后发起的COT,则第三时间间隔需要满足特定值,例如16us;若第三终端设备是在执行完type2 LBT后发起的COT,则第三时间间隔需要满足特定值,例如25us。其中,type2 LBT例如type2A LBT、type2B LBT、type2C LBT等。
其中,需要说明的是,在该段信道占用时间上,在进行第一终端设备信息的发送之前,可以为第三终端设备的信息发送,也可以为其他终端设备的信息发送。其他终端设备例如,共享第三终端设备发起的COT的除第一终端设备以外的任意一个终端设备。
其中,如图8所示,为第一终端设备共享第三终端设备发起的COT时,在发送PSCCH信息或者PSSCH信息的第一个符号之前发送CPE的示例图。在图8中,发起COT的第三终端设备可以为UE1,第一终端设备可以为UE2或者UE3。
在图8中,以第一终端设备为UE2为例,UE2根据UE1指定的LBT的类型,如type2A、type2B、type2C等,确定UE1的信息的结束位置与UE2的信息的起始位置之间的第三时间间隔需要满足特定值,例如25us。其中,第三时间间隔例如图8中Slotn+2中的GP所示。UE2在第三时间间隔上需要发送CPE,直至到达UE2的信息的起始位置。其中,UE1的信息和UE2的信息可以为PSCCH信息或者PSSCH信息。其中,UE2的信息的起始位置的第一个符号例如可以为AGC符号。
在图8中,以第一终端设备为UE3为例,UE2的信息的结束位置与UE3的信息的起始位置之间存在第三时间间隔。其中,第三时间间隔例如图8中Slotn+5中的GP所示。UE3在第三时间间隔上需要发送CPE,直至到达UE3的信息的起始位置。其中,UE2的信息和UE3的信息可以为PSCCH信息或者PSSCH信息。其中,UE3的信息的起始位置的第一个符号例如可以为AGC符号。
本申请实施例的循环前缀扩展CPE的发送方法,第一终端设备在发送的PSCCH信息或者PSSCH信息的第一个符号之前的第三时间间隔上向第二终端设备发送CPE;其中,第三时间间隔为,第三终端设备发送PSCCH信息或者PSSCH信息的结束位置与第一个符号的起始位置之间的时间间隔;第一终端设备共享第三终端设备发起的COT;从而能够确保信道占用时间上不存在空闲的时间间隔,确保信道占用时间上信息传输的连续性。
请参见图9,图9是本申请实施例提供的另一种循环前缀扩展CPE的发送方法的流程示意图。需要说明的是,本申请实施例的循环前缀扩展CPE的发送方法可应用于第一终端设备,第一终端设备可以为共享第三终端设备发起的信道占用时间COT的任意一个终端设备。其中,第三终端设备为除第一终端设备之外的终端设备,且第三终端设备在执行完type1LBT后发起COT。
其中,该循环前缀扩展CPE的发送方法可以单独被执行,也可以结合本申请中的任一个实施例或是实施例中的可能的实现方式一起被执行,还可以结合相关技术中的任一种技术方案一起被执行。
如图9所示,该循环前缀扩展CPE的发送方法可以包括但不限于如下步骤。
步骤S901,在第一终端设备发送的PSFCH信息的第一个符号之前的第四时间间隔上向第二终端设备发送CPE;其中,第四时间间隔为,第三终端设备发送PSCCH信息或者 PSSCH信息的结束位置与第一个符号的起始位置之间的时间间隔;第一终端设备共享第二终端设备发起的COT。
在本申请实施例中,第一终端设备共享第二终端设备发起的信道占用时间COT的情况下,第一终端设备和第三终端设备共享一段信道占用时间;或者,第一终端设备、第三终端设备以及共享第三终端设备发起的COT的其它终端设备共享一段信道占用时间。
其中,不同终端设备在该段信道占用时间上使用一定时间进行信息的发送的情况下,不同终端设备的信息的位置之间会存在一段时间间隔,需要发送CPE,以确保信道占用时间上信息传输的连续性。例如,第三终端设备的信息的发送后进行第一终端设备信息的发送,则第三终端设备的信息的结束位置与第一终端设备的信息的起始位置之间存在一段时间间隔,即第四时间间隔;第一终端设备在第四时间间隔上发送CPE,可以确保信道占用时间上信息传输的连续性。其中,第一终端设备的信息和第三终端设备的信息可以不同。
其中,第三终端设备的信息可以为PSCCH信息或者PSSCH信息。第一终端设备的信息可以为PSFCH信息。
其中,需要说明的是,在该段信道占用时间上,在进行第一终端设备信息的发送之前,可以为第三终端设备的信息发送,也可以为其他终端设备的信息发送。其他终端设备例如,共享第三终端设备发起的COT的除第一终端设备以外的任意一个终端设备。
其中,如图10所示,为第一终端设备共享第三终端设备发起的COT时,在发送PSFCH信息的第一个符号之前发送CPE的示例图。在图10中,发起COT的第三终端设备可以为UE1,第一终端设备可以为UE2。在图10中,UE1在slot0至slot2上进行信息的发送。其中,在slot2上配置有PSFCH资源,UE2需要在slot2上配置的PSFCH资源发送PSFCH信息,则在UE1的信息的结束位置和UE2的PSFCH信息的起始位置之间存在有第四时间间隔,如图10中的GP所示。UE2在第四时间间隔上需要发送循环前缀扩展,直至到达UE2的PSFCH信息的起始位置。其中,UE1的信息可以为PSCCH信息或者PSSCH信息。其中,UE2的PSFCH信息的起始位置的第一个符号例如可以为AGC符号。
本申请实施例的循环前缀扩展CPE的发送方法,第一终端设备在第一终端设备发送的PSFCH信息的第一个符号之前的第四时间间隔上向第二终端设备发送CPE;其中,第四时间间隔为,第三终端设备发送PSCCH信息或者PSSCH信息的结束位置与第一个符号的起始位置之间的时间间隔;第一终端设备共享第三终端设备发起的COT;从而能够确保信道占用时间上不存在空闲的时间间隔,确保信道占用时间上信息发送的连续性。
请参见图11,图11是本申请实施例提供的一种循环前缀扩展CPE的接收方法的流程示意图。需要说明的是,本申请实施例的循环前缀扩展CPE的接收方法可由第二终端设备执行,第二终端设备为与第一终端设备通信的终端设备。如图11所示,该循环前缀扩展CPE的接收方法可以包括但不限于如下步骤。
步骤S1101,在接收第一终端设备的第一信息的第一个符号之前接收第一终端设备发送的CPE;其中,第一信息为物理侧行控制信道(Physical Sidelink Control Channel,PSCCH)信息,物理侧行共享信道(Physical Sidelink Shared Channel,PSSCH)信息,或者物理侧行反馈信道(Physical Sidelink Feedback Channel,PSFCH)信息。
在本申请实施例中,一些实施例中,第一终端设备未共享第三终端设备发起的信道占用时间COT。其中,一种示例中,第一终端设备发起COT,且未共享给其他终端设备。另一种示例中,第一终端设备发起COT,且共享给其他终端设备。
其中,第一终端设备未共享第三终端设备发起的信道占用时间COT的情况下,第一终端设备单独使用一段信道占用时间;或者,信道占用时间上第一终端设备进行第一信息的发送之前未存在其他终端设备发送信息或者接收信息。其中,在第一终端设备发起COT,且未共享给其他终端设备的情况下,第一终端设备单独使用一段信道占用时间。在第一终端设备发起COT,且共享给其他终端设备的情况下,信道占用时间上第一终端设备进行第一信息的发送之前未存在其他终端设备发送信息或者接收信息。
其中,第一终端设备未共享第三终端设备发起的信道占用时间COT的情况下,一种示例中,第一信息为PSCCH信息,或者,PSSCH信息。对应的,第二终端设备执行步骤S1101的过程例如可以为,在接收第一终端设备的第一信息的第一个符号之前的第一时间间隔上接收CPE;其中,第一时间间隔为,第一终端设备执行LBT的结束位置与第一个符号的起始位置之间的时间间隔。
另一种示例中,第一信息为PSFCH信息。对应的,第二终端设备执行步骤S1101的过程例如可以为,在接收第一终端设备的第一信息的第一个符号之前的第二时间间隔上接收CPE;其中,第二时间间隔为,第一终端设备发送PSCCH信息或者PSSCH信息的结束位置与第一个符号的起始位置之间的时间间隔。
另一些实施例中,第一终端设备共享第三终端设备发起的信道占用时间COT;第三终端设备在执行完type1 LBT后发起COT。
其中,第一终端设备共享第三终端设备发起的信道占用时间COT的情况下,第一终端设备和第三终端设备共享一段信道占用时间;或者,第一终端设备、第三终端设备以及共享第三终端设备发起的COT的其它终端设备共享一段信道占用时间。
其中,第一终端设备共享第三终端设备发起的信道占用时间COT的情况下,一种示例中,第一信息为PSCCH信息或者PSSCH信息。对应的,第二终端设备执行步骤S1101的过程例如可以为,在接收第一终端设备的第一信息的第一个符号之前的第三时间间隔上接收CPE;其中,第三时间间隔为,第三终端设备发送PSCCH信息或者PSSCH信息的结束位置与第一个符号的起始位置之间的时间间隔。
另一种示例中,第一信息为PSFCH信息。对应的,第二终端设备执行步骤S1101的过程例如可以为,在接收第一终端设备的第一信息的第一个符号之前的第四时间间隔上接收CPE;其中,第四时间间隔为,第三终端设备发送PSCCH信息或者PSSCH信息的结束位置与第一个符号的起始位置之间的时间间隔。
其中,需要说明的是,在该段信道占用时间上,在进行第一终端设备信息的发送之前,可以为第三终端设备的信息发送,也可以为其他终端设备的信息发送。其他终端设备例如,共享第三终端设备发起的COT的除第一终端设备以外的任意一个终端设备。
本申请实施例的循环前缀扩展CPE的接收方法,第二终端设备在接收第一终端设备的第一信息的第一个符号之前接收第一终端设备发送的CPE;其中,第一信息为物理侧行控制信道PSCCH信息,物理侧行共享信道PSSCH信息,或者物理侧行反馈信道PSFCH信 息,从而能够确保信道占用时间上不存在空闲的时间间隔,确保信道占用时间上信息传输的连续性。
上述本申请提供的实施例中,从终端设备的角度对本申请实施例提供的方法进行了介绍。为了实现上述本申请实施例提供的方法中的各功能,第一终端设备可以包括硬件结构、软件模块,以硬件结构、软件模块、或硬件结构加软件模块的形式来实现上述各功能。上述各功能中的某个功能可以硬件结构、软件模块、或者硬件结构加软件模块的方式来执行。
请参见图12,为本申请实施例提供的一种第一终端设备120的结构示意图。所述第一终端设备120包括:收发单元1201,用于在所述第一终端设备发送的第一信息的第一个符号之前向第二终端设备发送所述CPE;其中,所述第一信息为物理侧行控制信道PSCCH信息,物理侧行共享信道PSSCH信息,或者物理侧行反馈信道PSFCH信息。
在一种实施方式中,所述第一终端设备未共享第三终端设备发起的信道占用时间COT。
在一种实施方式中,所述第一信息为PSCCH信息或者PSSCH信息,所述收发单元1201具体用于,在所述第一终端设备发送的第一信息的第一个符号之前的第一时间间隔上发送所述CPE;其中,所述第一时间间隔为,所述第一终端设备执行LBT的结束位置与所述第一个符号的起始位置之间的时间间隔。
在一种实施方式中,所述第一信息为PSFCH信息,所述收发单元1201具体用于,在所述第一终端设备发送的第一信息的第一个符号之前的第二时间间隔上发送所述CPE;其中,所述第二时间间隔为,所述第一终端设备发送所述PSCCH信息或者所述PSSCH信息的结束位置与所述第一个符号的起始位置之间的时间间隔。
在一种实施方式中,所述第一终端设备共享第三终端设备发起的信道占用时间COT,所述第三终端设备在执行完type1 LBT后发起所述COT。
在一种实施方式中,所述第一信息为PSCCH信息或者PSSCH信息,所述收发单元1201具体用于,在所述第一终端设备发送的第一信息的第一个符号之前的第三时间间隔上发送所述CPE;其中,所述第三时间间隔为,所述第三终端设备发送所述PSCCH信息或者所述PSSCH信息的结束位置与所述第一个符号的起始位置之间的时间间隔。
在一种实施方式中,所述第一信息为PSFCH信息,所述收发单元1201具体用于,在所述第一终端设备发送的第一信息的第一个符号之前的第四时间间隔上发送所述CPE;其中,所述第四时间间隔为,所述第三终端设备发送所述PSCCH信息或者所述PSSCH信息的结束位置与所述第一个符号的起始位置之间的时间间隔。
请参见图13,为本申请实施例提供的一种第二终端设备130的结构示意图。所述第二终端设备130包括:收发单元1301,用于在接收第一终端设备的第一信息的第一个符号之前接收所述第一终端设备发送的所述CPE;其中,所述第一信息为物理侧行控制信道PSCCH信息,物理侧行共享信道PSSCH信息,或者物理侧行反馈信道PSFCH信息。
在一种实施方式中,所述第一终端设备未共享第三终端设备发起的信道占用时间COT。
在一种实施方式中,所述第一信息为PSCCH信息,或者,PSSCH信息;所述收发单元1301具体用于,在接收所述第一终端设备的第一信息的第一个符号之前的第一时间间隔 上接收所述CPE;其中,所述第一时间间隔为,所述第一终端设备执行LBT的结束位置与所述第一个符号的起始位置之间的时间间隔。
在一种实施方式中,所述第一信息为PSFCH信息;所述收发单元1301具体用于,在接收所述第一终端设备的第一信息的第一个符号之前的第二时间间隔上接收所述CPE;其中,所述第二时间间隔为,所述第一终端设备发送所述PSCCH信息或者所述PSSCH信息的结束位置与所述第一个符号的起始位置之间的时间间隔。
在一种实施方式中,所述第一终端设备共享第三终端设备发起的信道占用时间COT,所述第三终端设备在执行完type1 LBT后发起所述COT。
在一种实施方式中,所述第一信息为PSCCH信息或者PSSCH信息;所述收发单元1301具体用于,在接收所述第一终端设备的第一信息的第一个符号之前的第三时间间隔上接收所述CPE;其中,所述第三时间间隔为,所述第三终端设备发送所述PSCCH信息或者所述PSSCH信息的结束位置与所述第一个符号的起始位置之间的时间间隔。
在一种实施方式中,所述第一信息为PSFCH信息;所述收发单元1301具体用于,在接收所述第一终端设备的第一信息的第一个符号之前的第四时间间隔上接收所述CPE;其中,所述第四时间间隔为,所述第三终端设备发送所述PSCCH信息或者所述PSSCH信息的结束位置与所述第一个符号的起始位置之间的时间间隔。
请参见图14,图14是本申请实施例提供的另一种通信装置140的结构示意图。通信装置140可以是终端设备(如前述方法实施例中的第一终端设备或者第二终端设备),也可以是支持终端设备实现上述方法的芯片、芯片系统、或处理器等。该装置可用于实现上述方法实施例中描述的方法,具体可以参见上述方法实施例中的说明。
通信装置140可以包括一个或多个处理器1401。处理器1401可以是通用处理器或者专用处理器等。例如可以是基带处理器或中央处理器。基带处理器可以用于对通信协议以及通信数据进行处理,中央处理器可以用于对通信装置(如,基站、基带芯片,终端设备、终端设备芯片,DU或CU等)进行控制,执行计算机程序,处理计算机程序的数据。
可选的,通信装置140中还可以包括一个或多个存储器1402,其上可以存有计算机程序1404,处理器1401执行所述计算机程序1404,以使得通信装置140执行上述方法实施例中描述的方法。可选的,所述存储器1402中还可以存储有数据。通信装置140和存储器1402可以单独设置,也可以集成在一起。
可选的,通信装置140还可以包括收发器1405、天线1406。收发器1405可以称为收发单元、收发机、或收发电路等,用于实现收发功能。收发器1405可以包括接收器和发送器,接收器可以称为接收机或接收电路等,用于实现接收功能;发送器可以称为发送机或发送电路等,用于实现发送功能。
可选的,通信装置140中还可以包括一个或多个接口电路1407。接口电路1407用于接收代码指令并传输至处理器1401。处理器1401运行所述代码指令以使通信装置140执行上述方法实施例中描述的方法。
通信装置140为终端设备(如前述方法实施例中的第一终端设备):收发器1405用于执行图2中的步骤S201;执行图3中的步骤S301;图5中的步骤S501;图7中的步骤S701; 图9中的步骤S901。
通信装置140为终端设备(如前述方法实施例中的第二终端设备):收发器1405用于执行图11中的步骤S1101。
在一种实现方式中,处理器1401中可以包括用于实现接收和发送功能的收发器。例如该收发器可以是收发电路,或者是接口,或者是接口电路。用于实现接收和发送功能的收发电路、接口或接口电路可以是分开的,也可以集成在一起。上述收发电路、接口或接口电路可以用于代码/数据的读写,或者,上述收发电路、接口或接口电路可以用于信号的传输或传递。
在一种实现方式中,处理器1401可以存有计算机程序1404,计算机程序1404在处理器1401上运行,可使得通信装置140执行上述方法实施例中描述的方法。计算机程序1404可能固化在处理器1401中,该种情况下,处理器1401可能由硬件实现。
在一种实现方式中,通信装置140可以包括电路,所述电路可以实现前述方法实施例中发送或接收或者通信的功能。本申请中描述的处理器和收发器可实现在集成电路(integrated circuit,IC)、模拟IC、射频集成电路RFIC、混合信号IC、专用集成电路(application specific integrated circuit,ASIC)、印刷电路板(printed circuit board,PCB)、电子设备等上。该处理器和收发器也可以用各种IC工艺技术来制造,例如互补金属氧化物半导体(complementary metal oxide semiconductor,CMOS)、N型金属氧化物半导体(nMetal-oxide-semiconductor,NMOS)、P型金属氧化物半导体(positive channel metal oxide semiconductor,PMOS)、双极结型晶体管(bipolar junction transistor,BJT)、双极CMOS(BiCMOS)、硅锗(SiGe)、砷化镓(GaAs)等。
以上实施例描述中的通信装置可以是终端设备(如前述方法实施例中的第一终端设备或者第二终端设备),但本申请中描述的通信装置的范围并不限于此,而且通信装置的结构可以不受图14的限制。通信装置可以是独立的设备或者可以是较大设备的一部分。例如所述通信装置可以是:
(1)独立的集成电路IC,或芯片,或,芯片系统或子系统;
(2)具有一个或多个IC的集合,可选的,该IC集合也可以包括用于存储数据,计算机程序的存储部件;
(3)ASIC,例如调制解调器(Modem);
(4)可嵌入在其他设备内的模块;
(5)接收机、终端设备、智能终端设备、蜂窝电话、无线设备、手持机、移动单元、车载设备、网络设备、云设备、人工智能设备等等;
(6)其他等等。
对于通信装置可以是芯片或芯片系统的情况,可参见图15所示的芯片的结构示意图。图15所示的芯片包括处理器1501和接口1502。其中,处理器1501的数量可以是一个或多个,接口1502的数量可以是多个。
可选的,芯片还包括存储器1503,存储器1503用于存储必要的计算机程序和数据。
本领域技术人员还可以了解到本申请实施例列出的各种说明性逻辑块(illustrative logical block)和步骤(step)可以通过电子硬件、电脑软件,或两者的结合进行实现。这 样的功能是通过硬件还是软件来实现取决于特定的应用和整个系统的设计要求。本领域技术人员可以对于每种特定的应用,可以使用各种方法实现所述的功能,但这种实现不应被理解为超出本申请实施例保护的范围。
本申请实施例还提供一种通信系统,该系统包括前述图12实施例中的第一终端设备以及前述图13实施例中的第二终端设备。
本申请还提供一种可读存储介质,其上存储有指令,该指令被计算机执行时实现上述任一方法实施例的功能。
本申请还提供一种计算机程序产品,该计算机程序产品被计算机执行时实现上述任一方法实施例的功能。
在上述实施例中,可以全部或部分地通过软件、硬件、固件或者其任意组合来实现。当使用软件实现时,可以全部或部分地以计算机程序产品的形式实现。所述计算机程序产品包括一个或多个计算机程序。在计算机上加载和执行所述计算机程序时,全部或部分地产生按照本申请实施例所述的流程或功能。所述计算机可以是通用计算机、专用计算机、计算机网络、或者其他可编程装置。所述计算机程序可以存储在计算机可读存储介质中,或者从一个计算机可读存储介质向另一个计算机可读存储介质传输,例如,所述计算机程序可以从一个网站站点、计算机、服务器或数据中心通过有线(例如同轴电缆、光纤、数字用户线(digital subscriber line,DSL))或无线(例如红外、无线、微波等)方式向另一个网站站点、计算机、服务器或数据中心进行传输。所述计算机可读存储介质可以是计算机能够存取的任何可用介质或者是包含一个或多个可用介质集成的服务器、数据中心等数据存储设备。所述可用介质可以是磁性介质(例如,软盘、硬盘、磁带)、光介质(例如,高密度数字视频光盘(digital video disc,DVD))、或者半导体介质(例如,固态硬盘(solid state disk,SSD))等。
本领域普通技术人员可以理解:本申请中涉及的第一、第二等各种数字编号仅为描述方便进行的区分,并不用来限制本申请实施例的范围,也表示先后顺序。
本申请中的至少一个还可以描述为一个或多个,多个可以是两个、三个、四个或者更多个,本申请不做限制。在本申请实施例中,对于一种技术特征,通过“第一”、“第二”、“第三”、“A”、“B”、“C”和“D”等区分该种技术特征中的技术特征,该“第一”、“第二”、“第三”、“A”、“B”、“C”和“D”描述的技术特征间无先后顺序或者大小顺序。
本申请中各表所示的对应关系可以被配置,也可以是预定义的。各表中的信息的取值仅仅是举例,可以配置为其他值,本申请并不限定。在配置信息与各参数的对应关系时,并不一定要求必须配置各表中示意出的所有对应关系。例如,本申请中的表格中,某些行示出的对应关系也可以不配置。又例如,可以基于上述表格做适当的变形调整,例如,拆分,合并等等。上述各表中标题示出参数的名称也可以采用通信装置可理解的其他名称,其参数的取值或表示方式也可以通信装置可理解的其他取值或表示方式。上述各表在实现时,也可以采用其他的数据结构,例如可以采用数组、队列、容器、栈、线性表、指针、链表、树、图、结构体、类、堆、散列表或哈希表等。
本申请中的预定义可以理解为定义、预先定义、存储、预存储、预协商、预配置、固化、或预烧制。
本领域普通技术人员可以意识到,结合本文中所公开的实施例描述的各示例的单元及算法步骤,能够以电子硬件、或者计算机软件和电子硬件的结合来实现。这些功能究竟以硬件还是软件方式来执行,取决于技术方案的特定应用和设计约束条件。专业技术人员可以对每个特定的应用来使用不同方法来实现所描述的功能,但是这种实现不应认为超出本申请的范围。
所属领域的技术人员可以清楚地了解到,为描述的方便和简洁,上述描述的系统、装置和单元的具体工作过程,可以参考前述方法实施例中的对应过程,在此不再赘述。
以上所述,仅为本申请的具体实施方式,但本申请的保护范围并不局限于此,任何熟悉本技术领域的技术人员在本申请揭露的技术范围内,可轻易想到变化或替换,都应涵盖在本申请的保护范围之内。因此,本申请的保护范围应以所述权利要求的保护范围为准。
Claims (20)
- 一种循环前缀扩展CPE的发送方法,其特征在于,所述方法由第一终端设备执行,所述方法包括:在所述第一终端设备发送的第一信息的第一个符号之前向第二终端设备发送所述CPE;其中,所述第一信息为物理侧行控制信道PSCCH信息,物理侧行共享信道PSSCH信息,或者物理侧行反馈信道PSFCH信息。
- 根据权利要求1所述的方法,其特征在于,所述在所述第一终端设备发送的第一信息的第一个符号之前向第二终端设备发送所述CPE,包括:在所述第一终端设备发送的第一信息的第一个符号之前的第一时间间隔上发送所述CPE;其中,所述第一时间间隔为,所述第一终端设备执行LBT的结束位置与所述第一个符号的起始位置之间的时间间隔;所述第一信息为PSCCH信息或者PSSCH信息。
- 根据权利要求1所述的方法,其特征在于,所述在所述第一终端设备发送的第一信息的第一个符号之前向第二终端设备发送所述CPE,包括:在所述第一终端设备发送的第一信息的第一个符号之前的第二时间间隔上发送所述CPE;其中,所述第二时间间隔为,所述第一终端设备发送所述PSCCH信息或者所述PSSCH信息的结束位置与所述第一个符号的起始位置之间的时间间隔;所述第一信息为PSFCH信息。
- 根据权利要求1所述的方法,其特征在于,所述第一终端设备共享第三终端设备发起的信道占用时间COT,所述COT是所述第三终端设备执行type1 LBT后发起的。
- 根据权利要求4所述的方法,其特征在于,所述在所述第一终端设备发送的第一信息的第一个符号之前向第二终端设备发送所述CPE,包括:在所述第一终端设备发送的第一信息的第一个符号之前的第三时间间隔上发送所述CPE;其中,所述第三时间间隔为,所述第三终端设备发送所述PSCCH信息或者所述PSSCH信息的结束位置与所述第一个符号的起始位置之间的时间间隔;所述第一信息为PSCCH信息或者PSSCH信息。
- 根据权利要求4所述的方法,其特征在于,所述在所述第一终端设备发送的第一信息的第一个符号之前向第二终端设备发送所述CPE,包括:在所述第一终端设备发送的第一信息的第一个符号之前的第四时间间隔上发送所述CPE;其中,所述第四时间间隔为,所述第三终端设备发送所述PSCCH信息或者所述PSSCH信息的结束位置与所述第一个符号的起始位置之间的时间间隔;所述第一信息为PSFCH信息。
- 一种循环前缀扩展CPE的接收方法,其特征在于,所述方法由第二终端设备执行,所述方法包括:在接收第一终端设备的第一信息的第一个符号之前接收所述第一终端设备发送的所述CPE;其中,所述第一信息为物理侧行控制信道PSCCH信息,物理侧行共享信道PSSCH信息,或者物理侧行反馈信道PSFCH信息。
- 根据权利要求7所述的方法,其特征在于,所述在接收第一终端设备的第一信息的第一个符号之前接收所述第一终端设备发送的所述CPE,包括:在接收所述第一终端设备的第一信息的第一个符号之前的第一时间间隔上接收所述CPE;其中,所述第一时间间隔为,所述第一终端设备执行LBT的结束位置与所述第一个符号的起始位置之间的时间间隔;所述第一信息为PSCCH信息或者PSSCH信息。
- 根据权利要求7所述的方法,其特征在于,所述在接收第一终端设备的第一信息的第一个符号之前接收所述第一终端设备发送的所述CPE,包括:在接收所述第一终端设备的第一信息的第一个符号之前的第二时间间隔上接收所述CPE;其中,所述第二时间间隔为,所述第一终端设备发送所述PSCCH信息或者所述PSSCH信息的结束位置与所述第一个符号的起始位置之间的时间间隔;所述第一信息为PSFCH信息。
- 根据权利要求7所述的方法,其特征在于,信道占用时间COT是所述第三终端设备执行type1 LBT后发起的,并且被所述第一终端设备共享的。
- 根据权利要求10所述的方法,其特征在于,所述在接收第一终端设备的第一信息的第一个符号之前接收所述第一终端设备发送的所述CPE,包括:在接收所述第一终端设备的第一信息的第一个符号之前的第三时间间隔上接收所述CPE;其中,所述第三时间间隔为,所述第三终端设备发送所述PSCCH信息或者所述PSSCH信息的结束位置与所述第一个符号的起始位置之间的时间间隔;所述第一信息为PSCCH信息或者PSSCH信息。
- 根据权利要求10所述的方法,其特征在于,所述在接收第一终端设备的第一信息的第一个符号之前接收所述第一终端设备发送的所述CPE,包括:在接收所述第一终端设备的第一信息的第一个符号之前的第四时间间隔上接收所述CPE;其中,所述第四时间间隔为,所述第三终端设备发送所述PSCCH信息或者所述PSSCH信息的结束位置与所述第一个符号的起始位置之间的时间间隔;所述第一信息为PSFCH信息。
- 一种第一终端设备,其特征在于,所述第一终端设备包括:收发单元,用于在所述第一终端设备发送的第一信息的第一个符号之前向第二终端设备发送所述CPE;其中,所述第一信息为物理侧行控制信道PSCCH信息,物理侧行共享信道PSSCH信息,或者,物理侧行反馈信道PSFCH信息。
- 一种第二终端设备,其特征在于,所述第二终端设备包括:收发单元,用于在接收第一终端设备的第一信息的第一个符号之前接收所述第一终端设备发送的所述CPE;其中,所述第一信息为物理侧行控制信道PSCCH信息,物理侧行共享信道PSSCH信息,或者物理侧行反馈信道PSFCH信息。
- 一种通信装置,其特征在于,所述装置包括处理器和存储器,所述存储器中存储有计算机程序,所述处理器执行所述存储器中存储的计算机程序,以使所述装置执行如权利要求1-6中任一项所述的方法。
- 一种通信装置,其特征在于,所述装置包括处理器和存储器,所述存储器中存储有计算机程序,所述处理器执行所述存储器中存储的计算机程序,以使所述装置执行如权利要求7-12中任一项所述的方法。
- 一种通信装置,其特征在于,包括:处理器和接口电路;所述接口电路,用于接收代码指令并发送至所述处理器;所述处理器,用于运行所述代码指令以执行如权利要求1-6中任一项所述的方法。
- 一种通信装置,其特征在于,包括:处理器和接口电路;所述接口电路,用于接收代码指令并发送至所述处理器;所述处理器,用于运行所述代码指令以执行如权利要求7-12中任一项所述的方法。
- 一种计算机可读存储介质,用于存储有指令,当所述指令被执行时,使如权利要求1-6中任一项所述的方法被实现。
- 一种计算机可读存储介质,用于存储有指令,当所述指令被执行时,使如权利要求7-12中任一项所述的方法被实现。
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