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WO2025209119A9 - Procédé de communication et appareil associé - Google Patents

Procédé de communication et appareil associé

Info

Publication number
WO2025209119A9
WO2025209119A9 PCT/CN2025/081721 CN2025081721W WO2025209119A9 WO 2025209119 A9 WO2025209119 A9 WO 2025209119A9 CN 2025081721 W CN2025081721 W CN 2025081721W WO 2025209119 A9 WO2025209119 A9 WO 2025209119A9
Authority
WO
WIPO (PCT)
Prior art keywords
time
frequency resource
symbol
information
sbfd
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
PCT/CN2025/081721
Other languages
English (en)
Chinese (zh)
Other versions
WO2025209119A1 (fr
Inventor
焦淑蓉
花梦
李军
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Huawei Technologies Co Ltd
Original Assignee
Huawei Technologies Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Huawei Technologies Co Ltd filed Critical Huawei Technologies Co Ltd
Publication of WO2025209119A1 publication Critical patent/WO2025209119A1/fr
Publication of WO2025209119A9 publication Critical patent/WO2025209119A9/fr
Pending legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W72/00—Local resource management
    • H04W72/04—Wireless resource allocation
    • H04W72/044—Wireless resource allocation based on the type of the allocated resource
    • H04W72/0446—Resources in time domain, e.g. slots or frames
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W72/00—Local resource management
    • H04W72/50—Allocation or scheduling criteria for wireless resources
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W72/00—Local resource management
    • H04W72/50—Allocation or scheduling criteria for wireless resources
    • H04W72/54—Allocation or scheduling criteria for wireless resources based on quality criteria
    • H04W72/541—Allocation or scheduling criteria for wireless resources based on quality criteria using the level of interference

Definitions

  • This application relates to the field of wireless communication technology, and in particular to a communication method and related apparatus.
  • SBFD subband full duplex
  • terminal equipment switches between receive and transmit filters between SBFD and non-SBFD symbols within the mixed time slot to reduce interference between data transmissions on adjacent uplink and downlink available frequency domain resources.
  • SBFD symbols can be located anywhere within the mixed time slot, the location for switching receive or transmit filters can also be arbitrary, leading to high complexity in resource scheduling design for terminal equipment.
  • this application provides a communication method and related apparatus that can reduce the complexity of resource scheduling design in terminal devices.
  • embodiments of this application provide a communication method applicable to a terminal device or a chip within a terminal device.
  • the method includes: receiving first information from a network device.
  • the first information is used to configure a first time-frequency resource, which is included in a second time-frequency resource.
  • the second time-frequency resource corresponds to at least one first time slot.
  • the first time-frequency resource and a third time-frequency resource in the second time-frequency resource do not overlap or partially overlap.
  • the third time-frequency resource corresponds to each sub-band full-duplex (SBFD) symbol in at least one first time slot. Whether the first time-frequency resource contains allowed time-frequency resources is determined based on resource usage rules.
  • SBFD sub-band full-duplex
  • the network device can send first information to the terminal device to configure a first time-frequency resource in a first time slot, and can further determine whether the first time-frequency resource includes allowed time-frequency resources based on resource usage rules, thereby enabling communication between the network device and the terminal device. Based on these resource usage rules, it can be ensured that the determined allowed time-frequency resources and the third time-frequency resource do not overlap as much as possible. This avoids the terminal device switching the receive filter or transmit filter at any position within the first time slot, thus reducing the complexity of the terminal device's resource scheduling design. Furthermore, the time-frequency resources configured in this way for transmitting uplink and downlink data do not overlap, and uplink and downlink transmissions do not interfere with each other, thereby eliminating interference between uplink and downlink transmissions.
  • the resource usage rule includes: if the first time-frequency resource and the third time-frequency resource do not overlap, the first time-frequency resource is a permitted time-frequency resource.
  • the symbol type corresponding to the first time-frequency resource may be the same as or different from the symbol type corresponding to the third time-frequency resource.
  • the first time-frequency resource does not overlap with the sixth time-frequency resource, which corresponds to the same frequency domain resource as the third time-frequency resource, and the sixth time-frequency resource corresponds to each non-SBFD symbol in at least one first time slot.
  • the resource usage rule includes: when the first time-frequency resource and the third time-frequency resource partially overlap, the fourth time-frequency resource within the first time-frequency resource is the allowed time-frequency resource.
  • the fourth time-frequency resource is any time-frequency resource within the first time-frequency resource except for the fifth time-frequency resource, and the fifth time-frequency resource corresponds to the same frequency domain resource as the third time-frequency resource.
  • the resource usage rules include, in the case where the first time-frequency resource and the third time-frequency resource partially overlap, the first time-frequency resource does not contain any time-frequency resources that are permitted to be used.
  • the method further includes: sending second information to the network device.
  • the second information is used to indicate to the terminal device its ability to make transitions at a target time point, the ability to make transitions at the target time point including the ability to transition from a first type of symbol to a second type of symbol, and/or the ability to transition from a second type of symbol to a first type of symbol.
  • the target time point is located at the time slot boundary.
  • the second information includes first indication information and/or second indication information, wherein the first indication information is used to indicate that the terminal device supports the ability to transform from a first type symbol to a second type symbol, and the second indication information is used to indicate that the terminal device supports the ability to transform from a second type symbol to a first type symbol.
  • the terminal device can independently report its two supported capabilities that can switch at a target time point. This makes the terminal device's reporting capability more flexible and improves the transmission rate.
  • the second information includes third indication information, which indicates that the terminal device supports the ability to transform from a first type of symbol to a second type of symbol, and that the terminal device supports the ability to transform from a second type of symbol to a first type of symbol.
  • terminal devices can uniformly report the two capabilities they support that can be transformed at a target time point. This makes it simpler and easier for network devices to receive and distinguish the capability information reported by terminal devices. Consequently, network devices can perform different scheduling based on the priorities of different terminal devices.
  • the first type of symbols includes SBFD symbols
  • the second type of symbols includes non-SBFD symbols
  • embodiments of this application provide a communication method applicable to network devices or chips within network devices.
  • the method includes: sending first information to a terminal device.
  • the first information is used to configure first time-frequency resources, which are included in second time-frequency resources.
  • the second time-frequency resources correspond to at least one first time slot.
  • the first time-frequency resources do not overlap with or only partially overlap with third time-frequency resources in the second time-frequency resources.
  • the third time-frequency resources correspond to each SBFD symbol in at least one first time slot. Whether the first time-frequency resources contain allowed time-frequency resources is determined based on resource usage rules.
  • the network device can send first information to the terminal device to configure a first time-frequency resource in a first time slot, and can further determine whether the first time-frequency resource includes a permitted time-frequency resource based on resource usage rules, so as to realize communication between the network device and the terminal device. Based on the resource usage rules, it can be ensured that the determined permitted time-frequency resource does not overlap with the third time-frequency resource. That is, the time-frequency resources configured in this way for transmitting uplink and downlink data do not overlap, and uplink and downlink transmissions do not interfere with each other, thereby eliminating interference between uplink and downlink transmissions.
  • the resource usage rule includes: if the first time-frequency resource and the third time-frequency resource do not overlap, the first time-frequency resource is a permitted time-frequency resource.
  • the symbol type corresponding to the first time-frequency resource may be the same as or different from the symbol type corresponding to the third time-frequency resource.
  • the first time-frequency resource does not overlap with the sixth time-frequency resource, which corresponds to the same frequency domain resource as the third time-frequency resource, and the sixth time-frequency resource corresponds to each non-SBFD symbol in at least one first time slot.
  • the resource usage rule includes: when the first and third time-frequency resources partially overlap, the fourth time-frequency resource within the first time-frequency resource is the allowed time-frequency resource.
  • the fourth time-frequency resource is any time-frequency resource within the first time-frequency resource except for the fifth time-frequency resource, and the fifth time-frequency resource corresponds to the same frequency domain resource as the third time-frequency resource.
  • the resource usage rules include: in the case where the first time-frequency resource and the third time-frequency resource partially overlap, the first time-frequency resource does not contain the time-frequency resources that are allowed to be used.
  • the method further includes: receiving second information from the terminal device.
  • the second information is used to indicate that the terminal device supports the ability to make transitions at a target time point, the ability to make transitions at the target time point including the ability to transition from a first type of symbol to a second type of symbol, and/or, the ability to transition from a second type of symbol to a first type of symbol.
  • the target time point includes the time slot boundary.
  • the second information includes first indication information and/or second indication information, wherein the first indication information is used to indicate that the terminal device supports the ability to transform from a first type symbol to a second type symbol, and the second indication information is used to indicate that the terminal device supports the ability to transform from a second type symbol to a first type symbol.
  • the second information includes third indication information, which indicates that the terminal device supports the ability to transform from a first type of symbol to a second type of symbol, and that the terminal device supports the ability to transform from a second type of symbol to a first type of symbol.
  • the first type of symbols includes SBFD symbols
  • the second type of symbols includes non-SBFD symbols
  • embodiments of this application provide a communication method applicable to a terminal device and a chip within the terminal device.
  • the method includes: receiving first information from a network device.
  • the first information is generated if the terminal device supports the ability to make transitions at a target time point.
  • the first information indicates that all SBFD symbols corresponding to the first time-frequency resource are located within at least one first time slot, and that the symbols within each of the at least one first time slot are SBFD symbols.
  • the ability to make transitions at the target time point includes the ability to transition from a first type of symbol to a second type of symbol, and/or the ability to transition from a second type of symbol to a first type of symbol.
  • Communication is then performed with the network device based on the first time-frequency resource.
  • the SBFD symbols in the time slot containing SBFD symbols can satisfy the condition that the SBFD symbols start from the first symbol of a time slot and end at the last symbol of a time slot. This can avoid the terminal device switching filters at arbitrary positions within the time slot, thereby reducing the complexity of the terminal device in the resource scheduling design.
  • the method before receiving the first information from the network device, the method further includes: receiving second information from the network device.
  • the second information is used to indicate that at least one second time slot exists in the first time-frequency resource, and the at least one second time slot simultaneously contains SBFD symbols and non-SBFD symbols.
  • the method before receiving the first information from the network device, the method further includes sending third information to the network device.
  • the third information is used to indicate to the terminal device its ability to make a transition at a target time point.
  • the target time point includes the time slot boundary.
  • the third information includes first indication information and/or second indication information, wherein the first indication information is used to indicate that the terminal device supports the ability to transform from a first type symbol to a second type symbol, and the second indication information is used to indicate that the terminal device supports the ability to transform from a second type symbol to a first type symbol.
  • the second information includes third indication information, which indicates that the terminal device supports the ability to transform from a first type of symbol to a second type of symbol, and that the terminal device supports the ability to transform from a second type of symbol to a first type of symbol.
  • the first type of symbols includes SBFD symbols
  • the second type of symbols includes non-SBFD symbols
  • embodiments of this application provide a communication method applicable to network devices and chips within those devices.
  • the method includes: determining that a terminal device supports a transition at a target time point.
  • the ability to transition at the target time point includes the ability to transition from a first type of symbol to a second type of symbol, and/or the ability to transition from a second type of symbol to a first type of symbol.
  • the first information indicates that all SBFD symbols corresponding to a first time-frequency resource are located within at least one first time slot, and that the symbols within each of the at least one first time slot are SBFD symbols.
  • the method before sending the first information to the terminal device, the method further includes: acquiring second information.
  • the second information is used to indicate that at least one second time slot exists in the first time-frequency resource, and the at least one second time slot simultaneously contains SBFD symbols and non-SBFD symbols.
  • Target location information of all SBFD symbols in the first time-frequency resource is determined based on the second information, and the first information is generated based on the target location information and the second information.
  • the target location information is determined by the network device by changing all SBFD symbols in each of at least one second time slot to non-SBFD symbols, or by changing all non-SBFD symbols in each of at least one second time slot to SBFD symbols.
  • the method before determining that the terminal device supports the capability to make a transition at the target time point, the method further includes: receiving third information from the terminal device.
  • the third information is used to indicate that the terminal device supports the capability to make a transition at the target time point.
  • the target time point includes the time slot boundary.
  • the third information includes first indication information and/or second indication information, wherein the first indication information is used to indicate that the terminal device supports the ability to transform from a first type symbol to a second type symbol, and the second indication information is used to indicate that the terminal device supports the ability to transform from a second type symbol to a first type symbol.
  • the second information includes third indication information, which indicates that the terminal device supports the ability to switch from a first type of symbol to a second type of symbol, and that the terminal device supports the ability to switch from a second type of symbol to a first type of symbol.
  • the first type of symbols includes SBFD symbols
  • the second type of symbols includes non-SBFD symbols
  • the communication method provided in the first aspect above is also applicable to functional components within a terminal device, such as processors, chips, chip systems, circuits, etc., and this application does not specifically limit them.
  • the communication methods provided in the second, third, or fourth aspects above are also applicable to the corresponding functional components within the device, and to avoid redundancy, they will not be repeated here.
  • the communication device includes a processing unit and a transceiver unit.
  • the transceiver unit is configured to receive first information from a network device, wherein the first information is used to configure first time-frequency resources, the first time-frequency resources are included in second time-frequency resources, the second time-frequency resources correspond to at least one first time slot, the first time-frequency resources and a third time-frequency resource in the second time-frequency resources do not overlap or partially overlap, and the third time-frequency resources correspond to each SBFD symbol pair in the at least one first time slot.
  • the processing unit is configured to determine, based on resource usage rules, whether the first time-frequency resources contain allowed time-frequency resources.
  • processing unit and the transceiver unit are also used to perform other steps or functions of the communication method provided in the first aspect above, which will not be repeated here to avoid redundancy.
  • the communication device includes a processing unit and a transceiver unit.
  • the transceiver unit is configured to send first information to a terminal device, wherein the first information is used to configure first time-frequency resources, the first time-frequency resources are included in second time-frequency resources, the second time-frequency resources correspond to at least one first time slot, the first time-frequency resources and a third time-frequency resource in the second time-frequency resources do not overlap or partially overlap, and the third time-frequency resources correspond to each SBFD symbol in at least one first time slot.
  • the processing unit is configured to determine, based on resource usage rules, whether the first time-frequency resources contain allowed time-frequency resources.
  • processing unit and the transceiver unit are also used to perform other steps or functions of the communication method provided in the second aspect above, which will not be repeated here to avoid redundancy.
  • this application provides a communication device, which can be a terminal device or a chip in a terminal device as mentioned in the third aspect above.
  • the communication device includes a processing unit and a transceiver unit.
  • the transceiver unit is configured to receive first information from a network device, wherein the first information is generated if the terminal device supports the ability to make transitions at a target time point.
  • the first information indicates that all sub-band full-duplex SBFD symbols corresponding to the first time-frequency resource are located in at least one first time slot, and the symbols in each of the at least one first time slot are SBFD symbols.
  • the ability to make transitions at the target time point includes the ability to transition from a first type of symbol to a second type of symbol, and/or the ability to transition from a second type of symbol to a first type of symbol.
  • the processing unit is further configured to communicate with the network device based on the first time-frequency resource.
  • processing unit and the transceiver unit are also used to perform other steps or functions of the communication method provided in the third aspect above, which will not be repeated here to avoid redundancy.
  • this application provides a communication device, which can be the network device mentioned in the fourth aspect above or a chip in the network device.
  • the communication device includes a processing unit and a transceiver unit.
  • the processing unit is configured to determine the capability of a terminal device to perform transitions at a target time point, wherein the capability to perform transitions at the target time point includes the capability to transition from a first type of symbol to a second type of symbol, and/or, the capability to transition from a second type of symbol to a first type of symbol.
  • the transceiver unit is configured to send first information to the terminal device, wherein the first information indicates that all sub-band full-duplex SBFD symbols corresponding to a first time-frequency resource are located within at least one first time slot, and the symbols within each of the at least one first time slot are SBFD symbols.
  • processing unit and the transceiver unit are also used to perform other steps or functions of the communication method provided in the fourth aspect above, which will not be repeated here to avoid redundancy.
  • this application provides a computer program product comprising instructions that, when executed on a computer, cause the computer to perform the first aspect or any possible implementation thereof, or to perform the second aspect or any possible implementation thereof, or to perform the third aspect or any possible implementation thereof, or to perform the method described in any one of the fourth aspect or any possible implementation thereof.
  • this application provides a computer-readable storage medium storing a computer program that, when executed, performs the method described in any one of the first aspect or any possible implementation thereof, the second aspect or any possible implementation thereof, the third aspect or any possible implementation thereof, or the fourth aspect or any possible implementation thereof.
  • this application provides a communication device, at least one processor, and a memory.
  • the memory is used to store a computer program.
  • the processor is used to execute the computer program stored in the memory, causing the communication device to perform the method described in any one of the first aspect or any possible implementation thereof, the second aspect or any possible implementation thereof, the third aspect or any possible implementation thereof, or the fourth aspect or any possible implementation thereof.
  • this application provides a chip that includes at least a processor.
  • the processor is configured to execute computer execution instructions to cause a device on which the chip is mounted to perform the method described in any one of the following: the first aspect or any possible implementation thereof; the second aspect or any possible implementation thereof; the third aspect or any possible implementation thereof; or the fourth aspect or any possible implementation thereof.
  • the chip may further include interface circuitry. This interface circuitry is used to receive computer execution instructions and transmit them to the processor.
  • this application provides a communication system.
  • the communication system includes at least a terminal device and a network device.
  • the first terminal is configured to execute the communication method provided by the first aspect or any possible implementation thereof, or by executing the communication method provided by the third aspect or any possible implementation thereof.
  • the network device is configured to execute the communication method provided by the second aspect or any possible implementation thereof, or by executing the communication method provided by the fourth aspect or any possible implementation thereof.
  • the communication method provided in this application can avoid the terminal device switching the receiving filter at any position within the time slot, thereby reducing the complexity of the terminal device in terms of resource scheduling design.
  • Figure 1 is a schematic diagram of the structure of a communication system provided in an embodiment of this application.
  • FIG. 2 is a schematic diagram of an SBFD scheme provided in an embodiment of this application.
  • FIG. 3 is a flowchart illustrating a communication method provided in an embodiment of this application.
  • Figure 4 is a schematic diagram of a resource usage rule provided in an embodiment of this application.
  • Figure 5 is a schematic diagram of another resource usage rule provided in an embodiment of this application.
  • Figure 6 is a schematic diagram of another resource usage rule provided in an embodiment of this application.
  • Figure 7 is a schematic diagram of another resource usage rule provided in an embodiment of this application.
  • Figure 8 is a schematic diagram of another resource usage rule provided in an embodiment of this application.
  • Figure 9 is another flowchart illustrating a communication method provided in an embodiment of this application.
  • Figure 10 is a flowchart illustrating another communication method provided in an embodiment of this application.
  • FIG 11 is a schematic flowchart of yet another communication method provided in an embodiment of this application.
  • Figure 12 is a schematic diagram of determining target location information according to an embodiment of this application.
  • Figure 13 is a schematic diagram of another method for determining target location information provided in an embodiment of this application.
  • FIG. 14 is a schematic flowchart of yet another communication method provided in an embodiment of this application.
  • Figure 15 is a schematic diagram of the structure of a communication device provided in an embodiment of this application.
  • Figure 16 is a schematic diagram of the structure of another communication device provided in an embodiment of this application.
  • At least one means one or more, and “more than one” means two or more.
  • “And/or” describes the relationship between related objects, indicating that three relationships can exist.
  • a and/or B can represent: A alone, A and B simultaneously, or B alone, where A and B can be singular or plural.
  • the character “/” generally indicates an “or” relationship between the preceding and following related objects; in the formulas of this application, the character “/” indicates a “division” relationship between the preceding and following related objects.
  • “Including at least one of A, B, and C” can mean: including A; including B; including C; including A and B; including A and C; including B and C; including A, B, and C.
  • LTE Long Term Evolution
  • TDD time division duplex
  • 5G 5th generation
  • NR new radio
  • Figure 1 is a schematic diagram of a communication system provided in an embodiment of this application.
  • the communication system 10 may include network devices and terminal devices.
  • the network devices and terminal devices cooperate with each other and can be used to implement the scheduling method provided in this application.
  • a network device can be a device deployed in a radio access network (RAN) to provide wireless communication functions for terminal devices.
  • a network device can be an evolved Node B (eNB), a baseband unit (BBU), an open radio access network (ORAN), a cloud radio access network (CRAN), an access point (AP), a wireless relay node, a wireless backhaul node, a transmission point (TP), or a transmission reception point (TRP) in a wireless local area network (WLAN).
  • This network device can also be a gNB (the next generation node B), a TRP, a TP in a 5G system, or one or a group of antenna panels (including multiple antenna panels) of a base station in a 5G system.
  • this network device can also constitute a network node of a gNB or TP, such as a BBU, or a distributed unit (DU).
  • the network device may also be a device that performs network-side functions in a device-to-device (D2D) communication system, a machine-to-machine (M2M) communication system, an Internet of Things (IoT) communication system, a vehicle-to-everything (V2X) communication system, or other communication systems.
  • D2D device-to-device
  • M2M machine-to-machine
  • IoT Internet of Things
  • V2X vehicle-to-everything
  • Terminal equipment can also be referred to as: user equipment (UE), mobile station (MS), mobile terminal (MT), access terminal, user unit, user station, mobile station, mobile station, remote station, remote terminal, mobile terminal, user terminal, terminal, wireless communication equipment, user agent, or user device, etc.
  • Terminal equipment can be a device that provides voice/data connectivity to a user, such as a handheld device with wireless connectivity, or an in-vehicle device.
  • terminals include: mobile phones, tablets, laptops, PDAs, mobile internet devices (MIDs), wearable devices, virtual reality (VR) devices, augmented reality (AR) devices, wireless terminals in industrial control, wireless terminals in self-driving, wireless terminals in remote medical surgery, wireless terminals in smart grids, wireless terminals in transportation safety, and smart cities.
  • MIDs mobile internet devices
  • VR virtual reality
  • AR augmented reality
  • Wireless terminals in smart cities, wireless terminals in smart homes, cellular phones, cordless phones, session initiation protocol (SIP) phones, wireless local loop (WLL) stations, personal digital assistants (PDAs), handheld devices with wireless communication capabilities, computing devices or other processing devices connected to a wireless modem, in-vehicle devices, wearable devices, terminal devices in 5G networks, or terminal devices in future evolved public land mobile networks (PLMNs), etc., are not limited to these categories in this application.
  • multiple terminal devices may exist in the communication system 10. That is, a network device can establish communication connections with multiple terminal devices. Similarly, multiple network devices may also exist in the communication system 10. That is, a terminal device can establish communication connections with multiple network devices simultaneously. In this embodiment of the application, no specific limitation is made on the number of network devices and terminal devices in the communication system 10.
  • the aforementioned network devices and terminal devices can be deployed on land, including indoors or outdoors, handheld or vehicle-mounted, on water, or in the air on airplanes, balloons, and satellites. This application does not impose specific limitations on the application scenarios of the network devices and terminal devices.
  • network devices and terminal devices can communicate using licensed spectrum, unlicensed spectrum, or both simultaneously.
  • Network devices and terminal devices, as well as terminal devices communicating with each other can communicate using spectrum below 6 GHz, spectrum above 6 GHz, or both simultaneously. This application does not impose specific restrictions on the spectrum resources used between network devices and terminal devices.
  • time-domain symbol can also be called OFDM symbol when using orthogonal frequency division multiplexing (OFDM) technology. It should be noted that time-domain symbols can also be combined with other multiple access methods, and this application does not limit this.
  • the length of the time-domain symbol can vary for different subcarrier intervals.
  • a time slot can be understood as a time slot containing 14 or 12 OFDM symbols, a sub-slot containing 7 OFDM symbols, or a mini-slot containing 2 or 4 OFDM symbols. It should be understood that a time slot may also include other numbers of OFDM symbols, and the embodiments of this application are not limited in this regard.
  • symbols within a time slot may include three types: downlink symbols (DL symbols), uplink symbols (UL symbols), and flexible symbols (F symbols).
  • Uplink symbols can only be used for uplink (UL) transmission, and downlink symbols can only be used for downlink (DL) transmission.
  • Flexible symbols do not have a defined transmission direction; they can be used for both uplink and downlink transmission.
  • the specific transmission direction can be determined by the network device through radio resource control (RRC) signaling or downlink control information (DCI) scheduling, which informs the terminal device.
  • RRC radio resource control
  • DCI downlink control information
  • the symbols in a time slot can be all downlink symbols, all uplink symbols, all flexible symbols, or a mixture of several types of symbols.
  • a subband is a portion of the frequency band of a carrier, that is, one or more consecutive physical resource blocks (PRBs) in the frequency domain.
  • PRBs physical resource blocks
  • a subband can also be understood as a frequency domain resource.
  • SBFD is a new duplex mode that achieves full-duplex operation at the base station by dividing a single TDD carrier into non-overlapping uplink/downlink subbands and transmitting and receiving data separately on each subband. SBFD can improve spectrum utilization, reduce latency, and adapt to diverse service requirements.
  • a carrier is divided into multiple non-overlapping subbands.
  • the transmission directions of these subbands can differ; that is, a carrier can include a first subband and a second subband, both with different transmission directions.
  • the first and second subbands refer to two types of subbands with different transmission directions, not that a carrier contains only two subbands.
  • a carrier may include subband A and subband B, where subband A and subband B have different transmission directions.
  • a carrier may include subband A, subband B, and subband C, where subband A and subband C have the same transmission direction, while subband B has a different transmission direction than both subband A and subband C.
  • the core idea of SBFD is that uplink and downlink transmission resources can be configured simultaneously on a certain symbol or time slot of a TDD carrier.
  • Figure 2 is a schematic diagram of an SBFD scheme provided in an embodiment of this application.
  • the rectangles filled with horizontal bars represent UL available time-frequency resources for uplink transmission, which can be located on the UL subband of the SBFD symbol.
  • the rectangles filled with blank spaces represent DL available time-frequency resources for downlink transmission, which can be located on the DL subband of the SBFD symbol, or, in the case of a non-SBFD symbol being a DL symbol, on the DL bandwidth part (BWP) of the non-SBFD symbol, or, in the case of a non-SBFD symbol being a flexible symbol, on the DL BWP of the flexible symbol.
  • Both UL available time-frequency resources and DL available time-frequency resources exist on time slots 1, 2, and 3, meaning that both uplink and downlink transmissions can be performed on these three time slots.
  • An SBFD symbol is a symbol that simultaneously contains both an uplink subband (UL subband) and a downlink subband (DL subband) within a single symbol period.
  • SBFD symbols can be used by SBFD-enabled terminal equipment during random access procedures to establish uplink/downlink synchronization and RRC connections.
  • SBFD symbols can be a subset of DL symbols, flexible symbols, or UL symbols configured in the TDD parameters, or they can be symbols different from the three types of symbols mentioned above in the TDD parameters.
  • the SBFD symbol contains both UL available time and frequency resources and DL available time and frequency resources.
  • Non-SBFD symbols refer to symbols that contain only uplink time-frequency resources within a symbol period, such as ULBWP, or downlink time-frequency resources, such as DL BWP. It should be understood that non-SBFD symbols can be UL symbols, DL symbols, or flexible symbols.
  • a time slot may be called an SBFD time slot if it includes at least one SBFD symbol among the multiple symbols it contains. That is, the frequency domain resources on some symbols of an SBFD time slot may include subbands with two or more different transmission directions.
  • an SBFD time slot contains both SBFD symbols and non-SBFD symbols
  • the SBFD time slot can also be called a hybrid time slot.
  • time slots 1, 2, and 3 are all SBFD time slots. Among them, time slots 1 and 3 can also be referred to as hybrid time slots.
  • each symbol in an SBFD time slot contains two or more sub-bands with different transmission directions.
  • a time slot contains both SBFD and non-SBFD symbols, it can be called a hybrid time slot. That is, the frequency domain resources of some symbols in a hybrid time slot may include subbands with two or more different transmission directions.
  • both time slot 1 and time slot 3 can be called hybrid time slots, and time slot 2 can be called SBFD time slot.
  • SBFD time slots and hybrid time slots are different naming methods for SBFD time slots and hybrid time slots under two possible scenarios. It should be understood that in future communication systems, SBFD time slots and hybrid time slots may have other names, and this application does not limit this.
  • a time slot is called a non-SBFD time slot if all symbols in its multiple symbols are non-SBFD symbols. That is, in a non-SBFD time slot, the transmission direction of all frequency domain resources on each symbol is consistent.
  • a non-SBFD time slot can be a DL time slot, a UL time slot, or a flexible time slot.
  • a DL time slot contains only DL symbols
  • a UL time slot contains only UL symbols
  • a flexible time slot can contain DL symbols, UL symbols, and flexible symbols.
  • the transmission direction of all frequency domain resources on each symbol in the non-SBFD time slot is consistent.
  • the non-SBFD time slot is a flexible time slot, there may be multiple symbols used for uplink transmission and multiple symbols used for downlink transmission in the non-SBFD time slot, but the transmission direction of the frequency domain resources on each of these multiple symbols is consistent.
  • the terminal device needs to switch the receive filter between the SBFD and non-SBFD symbols within the mixed time slot to reduce interference between data transmissions on adjacent uplink and downlink available frequency domain resources.
  • SBFD symbols can be located anywhere within the mixed time slot, the location for switching the receive filter can also be arbitrary, leading to high complexity in resource scheduling design for the terminal device. Therefore, the technical problem this application aims to solve is: how to reduce the complexity of resource scheduling design for the terminal device.
  • FIG 3 is a flowchart illustrating a communication method provided in an embodiment of this application.
  • This communication method is applicable to the communication system 10 shown in Figure 1 above.
  • the communication method may include the following steps:
  • the network device sends first information to the terminal device.
  • the terminal device receives this first information.
  • the network device can generate and send first information to the terminal device.
  • This first information can be used to configure a first time-frequency resource, which may be included in a second time-frequency resource.
  • the second time-frequency resource corresponds to at least one first time slot.
  • the first time-frequency resource and a third time-frequency resource within the second time-frequency resource do not overlap or only partially overlap.
  • the third time-frequency resource corresponds to each SBFD symbol in at least one first time slot corresponding to the second time-frequency resource.
  • each first time slot is a hybrid time slot as described above.
  • the first information can be sent through one or more of the following: RRC parameters, CE parameters of the medium access control (MAC) control element, and DCI.
  • RRC parameters RRC parameters
  • CE parameters of the medium access control (MAC) control element CE parameters of the medium access control (MAC) control element
  • DCI DCI
  • the network device can configure periodic transmission resources via RRC parameters and activate these periodic transmission resources via MAC CE parameters or DCI.
  • the activated periodic transmission resource is the first time-frequency resource mentioned earlier.
  • Scenario 1 a downlink communication scenario where the network device sends target data and the terminal device receives it
  • Scenario 2 an uplink communication scenario where the terminal device sends target data and the network device receives it
  • the network device can first determine the downlink data or downlink control information to be transmitted during communication with the terminal device, and then determine the first time-frequency resource used to transmit the downlink data or downlink control information. Further, the network device can generate first information based on the first time-frequency resource and send the first information to the terminal device to configure the first time-frequency resource.
  • downlink data or downlink control information may include physical downlink shared channel (PDSCH), channel-state-information reference signal (CSI-RS), semi-persistent scheduling (SPS) PDSCH, physical downlink control channel (PDCCH), periodic CSI-RS, semi-persistent CSI-RS, etc., and the embodiments of this application are not limited thereto.
  • PDSCH physical downlink shared channel
  • CSI-RS channel-state-information reference signal
  • SPS semi-persistent scheduling
  • PDCCH physical downlink control channel
  • periodic CSI-RS periodic CSI-RS
  • semi-persistent CSI-RS etc.
  • the network device can first determine the first time-frequency resources that need to be configured for the terminal device based on communication service requirements, in order to transmit uplink data or uplink control information. Further, the network device can generate first information based on the determined first time-frequency resources and send this first information to the terminal device to configure the first time-frequency resources.
  • uplink data or uplink control information may include a physical uplink control channel (PUCCH), a physical uplink shared channel (PUSCH), an aperiodic channel sounding reference signal (SRS), a periodic SRS, a semi-persistent SRS, etc., and the embodiments of this application are not limited thereto.
  • PUCCH physical uplink control channel
  • PUSCH physical uplink shared channel
  • SRS aperiodic channel sounding reference signal
  • periodic SRS a periodic SRS
  • semi-persistent SRS etc.
  • the functions of the first, second, and third time-frequency resources mentioned above are not the same.
  • the following will use Scenario 1 and Scenario 2 as examples, taking the case where the time-frequency resource corresponding to the second time-frequency resource is a first time slot i, to explain the first, second, and third time-frequency resources mentioned above.
  • the second time-frequency resource refers to the entire time-frequency resource corresponding to this first time slot i.
  • This second time-frequency resource can contain both UL (Usable Time-Frequency) resources for uplink transmission and DL (Usable Time-Frequency) resources for downlink transmission.
  • the first time-frequency resource can be used to transmit downlink data or downlink control information. It can be a portion of the DL-available time-frequency resources in the second time-frequency resource and is located on the DL subband.
  • the third time-frequency resource can be all the UL-available time-frequency resources in the second time-frequency resource and can be used for uplink transmission. Its corresponding symbol type is SBFD symbol and it is located on the UL subband of the SBFD symbol. It should be understood that all time-frequency resources in the second time-frequency resource except the third time-frequency resource are DL-available time-frequency resources and can be used for downlink transmission. Their corresponding symbol types can include SBFD symbols and non-SBFD symbols.
  • the DL-available time-frequency resources can be located on the DL subband of the SBFD symbol, or, if the non-SBFD symbol is a DL symbol, it can be located on the DL BWP of the non-SBFD symbol, or, if the non-SBFD symbol is a flexible symbol, it can be located on the DL BWP of the flexible symbol.
  • the third time-frequency resource may also include a guard subband. It should be noted that this guard subband may be located between the third time-frequency resource and the available time-frequency resource for DL (Dynamic Data Link) to reduce interference between uplink and downlink data transmissions.
  • DL Dynamic Data Link
  • the first time-frequency resource can be used to transmit uplink data or uplink control information. It can be a portion of the UL-available time-frequency resources in the second time-frequency resource and is located on the UL subband.
  • the third time-frequency resource can be all the time-frequency resources in the DL-available time-frequency resources of the second time-frequency resource. It can be used for downlink transmission, and its corresponding symbol type is SBFD symbol, located on the DL subband of the SBFD symbol. It should be understood that all time-frequency resources in the second time-frequency resource except the third time-frequency resource are UL-available time-frequency resources and can be used for uplink transmission. Their corresponding symbol types can include SBFD symbols and non-SBFD symbols.
  • UL-available time-frequency resources can be located on the UL subband of the SBFD symbol, or, if the non-SBFD symbol is a UL symbol, it can be located on the UL BWP of the non-SBFD symbol, or, if the non-SBFD symbol is a flexible symbol, it can be located on the UL BWP of the flexible symbol.
  • the third time-frequency resource may also include a guard subband. It should be noted that this guard subband may be located between the third time-frequency resource and the UL-available time-frequency resource to reduce interference between uplink and downlink data transmissions.
  • the terminal device can receive the first information sent by the network device and determine the aforementioned first time-frequency resource based on the first information.
  • the terminal device determines the first time-frequency resource based on the first information, and determines whether the first time-frequency resource includes allowed time-frequency resources based on the resource usage rules.
  • the terminal device after receiving the first information, can determine the first time-frequency resource based on the first information, and determine whether the first time-frequency resource includes a permitted time-frequency resource based on resource usage rules. It should be noted that for permitted time-frequency resources, the terminal device and network device can use the time-frequency resource to transmit data or control information, while for unpermitted time-frequency resources, the terminal device and network device cannot use the time-frequency resource to transmit data or control information.
  • the resource usage rules mentioned above can be predefined in the communication protocol, and the terminal device can determine the resource usage rules through the communication protocol. Alternatively, they can be determined and configured by the network device for the terminal device. This application embodiment does not limit this.
  • the terminal device may first obtain the resource usage rules, and then determine whether the first time-frequency resource contains allowed time-frequency resources based on the resource usage rules and the configured first time-frequency resource.
  • the resource usage rules may include: if the first time-frequency resource and the third time-frequency resource do not overlap, the first time-frequency resource can be a permitted time-frequency resource. That is, if the first time-frequency resource and the third time-frequency resource do not overlap, the first time-frequency resource can be used for data or control information transmission between the terminal device and the network device.
  • Figure 4 is a schematic diagram of a resource usage rule provided in an embodiment of this application.
  • the resource usage rules in Scenario 1 and Scenario 2 described above will be explained below with reference to Figure 4 and the first time slot i mentioned earlier.
  • a first time-frequency resource and a third time-frequency resource exist within the second time-frequency resource, and the first time-frequency resource and the third time-frequency resource do not overlap.
  • the first time-frequency resource shown in Figure 4 is a portion of the available time-frequency resources in the DL (Downlink) and can be used for downlink transmission.
  • the third time-frequency resource is the available time-frequency resource in the UL (Uplink) and can be used for uplink transmission.
  • the first time-frequency resource is the permitted time-frequency resource and can be used to transmit downlink data or downlink control information.
  • the first time-frequency resource shown in Figure 4 is a portion of the available time-frequency resources in the UL (Upper Limit) and can be used for uplink transmission.
  • the third time-frequency resource is the available time-frequency resource in the DL (Lower Limit) and can be used for downlink transmission.
  • the first time-frequency resource is the permitted time-frequency resource and can be used to transmit uplink data or uplink control information.
  • the symbol type corresponding to the first time-frequency resource and the symbol type corresponding to the third time-frequency resource may be the same or different.
  • the symbol type corresponding to the third time-frequency resource is SBFD symbol
  • the symbol type corresponding to the first time-frequency resource can be either SBFD symbol or non-SBFD symbol.
  • the first time-frequency resource can only be located on either an SBFD symbol or a non-SBFD symbol.
  • the symbol type corresponding to the first time-frequency resource can be predefined by the protocol or configured by the network device; this embodiment of the application does not limit this.
  • Figure 5 is a schematic diagram of another resource usage rule provided by an embodiment of this application.
  • the resource usage rules in Scenario 1 and Scenario 2 described above will be explained below with reference to Figure 5 and the first time slot i mentioned earlier.
  • the first time-frequency resource and the third time-frequency resource do not overlap. Since the symbol type corresponding to the third time-frequency resource is SBFD symbol, the symbol type corresponding to the first time-frequency resource can be SBFD symbol, or the symbol type corresponding to the first time-frequency resource can be non-SBFD symbol.
  • the first time-frequency resource shown in Figure 5 is a portion of the available time-frequency resources in the DL (Downlink) system, which can be used for downlink transmission.
  • the third time-frequency resource is the available time-frequency resource in the UL (Downlink) system, which can be used for uplink transmission.
  • the symbol type corresponding to the first time-frequency resource can be either an SBFD (Simplified Substrate) symbol or a non-SBFD (Simplified Substrate) symbol.
  • This first time-frequency resource is a permitted time-frequency resource and can be used to transmit downlink data or downlink control information.
  • the first time-frequency resource shown in Figure 5 is a portion of the available time-frequency resources in the UL (Upper Limit) and can be used for uplink transmission.
  • the third time-frequency resource is the available time-frequency resource in the DL (Lower Limit) and can be used for downlink transmission.
  • the symbol type corresponding to the first time-frequency resource can be either an SBFD (Simplified Substrate Default) symbol or a non-SBFD (Simplified Substrate Default) symbol.
  • This first time-frequency resource is a permitted time-frequency resource and can be used to transmit uplink data or uplink control information.
  • the symbol types corresponding to these multiple different time-frequency resources may all be the same, that is, the symbol types corresponding to these multiple different time-frequency resources may all be SBFD symbols or non-SBFD symbols. This application embodiment does not limit this.
  • the first time-frequency resource does not overlap with the third time-frequency resource, it may also not overlap with the sixth time-frequency resource.
  • the sixth time-frequency resource corresponds to the same frequency domain resource as the third time-frequency resource, and the sixth time-frequency resource corresponds to each non-SBFD symbol in at least one first time slot of the second time-frequency resource. It can be understood that the sub-band corresponding to the sixth time-frequency resource is the same as the sub-band corresponding to the third time-frequency resource.
  • Figure 6 is a schematic diagram of another resource usage rule provided by an embodiment of this application.
  • the resource usage rules in scenarios one and two above will be described below with reference to Figure 6 and the first time slot i mentioned earlier.
  • the sixth time-frequency resource can correspond to the same frequency domain resource as the third time-frequency resource, and the sixth time-frequency resource corresponds to each non-SBFD symbol in the first time slot i.
  • the first time-frequency resource shown in Figure 6 is a portion of the available time-frequency resources in the downlink (DL) and can be used for downlink transmission.
  • the sixth time-frequency resource is a portion of the first time-frequency resource that shares the same frequency domain as the third time-frequency resource and is located on a non-SBFD symbol.
  • the third time-frequency resource is a UL-available time-frequency resource and can be used for uplink transmission.
  • the first time-frequency resource is the permitted time-frequency resource and can be used to transmit downlink data or downlink control information.
  • the first time-frequency resource shown in Figure 6 is a portion of the available time-frequency resources in the UL (Upper Limit) and can be used for uplink transmission.
  • the sixth time-frequency resource is a portion of the first time-frequency resource that shares the same frequency domain as the third time-frequency resource and is located on a non-SBFD symbol.
  • the third time-frequency resource is a available time-frequency resource in the DL (Lower Limit) and can be used for downlink transmission.
  • the first time-frequency resource is the permitted time-frequency resource and can be used to transmit uplink data or uplink control information.
  • the terminal device determines that the first time-frequency resource and the third time-frequency resource do not overlap, then the first time-frequency resource can be determined as the allowed time-frequency resource.
  • the resource usage rules may include: when the first time-frequency resource and the third time-frequency resource partially overlap, the fourth time-frequency resource in the first time-frequency resource may be a permitted time-frequency resource.
  • the fourth time-frequency resource may be a time-frequency resource in the first time-frequency resource other than the fifth time-frequency resource, and the fifth time-frequency resource may correspond to the same frequency domain resource as the aforementioned third time-frequency resource.
  • the fifth time-frequency resource is a portion of the first time-frequency resource located on the sub-band corresponding to the third time-frequency resource, meaning that the sub-band corresponding to the fifth time-frequency resource is the same as the sub-band corresponding to the third time-frequency resource.
  • the fourth time-frequency resource in the first time-frequency resource can be used for the transmission of data or control information between the terminal device and the network device.
  • Figure 7 is a schematic diagram of another resource usage rule provided by an embodiment of this application.
  • the resource usage rules in Scenario 1 and Scenario 2 described above will be explained below with reference to Figure 7 and the first time slot i mentioned earlier.
  • the first time-frequency resource may include a fourth time-frequency resource and a fifth time-frequency resource.
  • the fifth time-frequency resource may correspond to the same frequency domain resource as the third time-frequency resource, and the fourth time-frequency resource may be a time-frequency resource in the first time-frequency resource other than the fifth time-frequency resource.
  • the first time-frequency resource shown in Figure 7 is a portion of the available time-frequency resources for downlink transmission, and the third time-frequency resource is the available time-frequency resource for uplink transmission.
  • the fourth time-frequency resource within the first time-frequency resource is the permitted time-frequency resource, which can be used to transmit downlink data or downlink control information.
  • the first time-frequency resource shown in Figure 7 is a portion of the available time-frequency resources in the UL (Upper Limit) and can be used for uplink transmission.
  • the third time-frequency resource is the available time-frequency resource in the DL (Lower Limit) and can be used for downlink transmission.
  • the fourth time-frequency resource in the first time-frequency resource is the permitted time-frequency resource and can be used to transmit uplink data or uplink control information.
  • the terminal device after obtaining the above-mentioned resource usage rules, if the terminal device determines that the first time-frequency resource and the third time-frequency resource overlap, it can determine the fourth time-frequency resource from the first time-frequency resource and identify the fourth time-frequency resource as the allowed time-frequency resource.
  • the resource usage rules may include: if the first time-frequency resource and the third time-frequency resource partially overlap, the first time-frequency resource may not contain the allowed time-frequency resources.
  • the first time-frequency resource cannot be used for the transmission of data or control information between the terminal device and the network device.
  • Figure 8 is a schematic diagram of another resource usage rule provided by an embodiment of this application.
  • the resource usage rules in Scenario 1 and Scenario 2 described above will be explained below with reference to Figure 8 and the first time slot i mentioned earlier.
  • the first time-frequency resource shown in Figure 8 is a portion of the available time-frequency resources in the DL (Downlink Data Transmission) system
  • the third time-frequency resource is the available time-frequency resource in the UL (Downlink Control System) system, which can be used for uplink transmission.
  • the first time-frequency resource does not include the permitted time-frequency resources, meaning that the first time-frequency resource cannot be used to transmit downlink data or downlink control information.
  • the first time-frequency resource shown in Figure 8 is a portion of the available time-frequency resources in the UL (Upper Limit) system
  • the third time-frequency resource is the available time-frequency resource in the DL (Lower Limit) system, which can be used for downlink transmission.
  • the first time-frequency resource does not include the permitted time-frequency resources, meaning that the first time-frequency resource cannot be used to transmit uplink data or uplink control information.
  • the terminal device after obtaining the above-mentioned resource usage rules, if the terminal device determines that the first time-frequency resource and the third time-frequency resource overlap, it can determine that the first time-frequency resource does not contain the allowed time-frequency resource.
  • multiple different time-frequency resources may exist in at least one first time slot to transmit different data.
  • These multiple different time-frequency resources can all transmit data based on the same resource usage rule in the three optional implementation methods mentioned above, or they can transmit data based on different resource usage rules according to requirements. This application embodiment does not limit this.
  • time-frequency resources A, B, C, D, E, and F exist in the first time slot, used for transmitting PDSCH, aperiodic CSI-RS, SPS PDSCH, PDCCH, periodic CSI-RS, and semi-persistent CSI-RS, respectively.
  • These six time-frequency resources can all be scheduled to transmit corresponding downlink data using the resource usage rules described in the first optional implementation method above.
  • time-frequency resources A and B among these six time-frequency resources can use the resource usage rules described in the first optional implementation above to schedule time-frequency resources A and B to transmit PDSCH and aperiodic CSI-RS respectively, while time-frequency resources C, D, E, and F can use the resource usage rules described in the second optional implementation above to schedule time-frequency resources C, D, E, and F to transmit SPS PDSCH, PDCCH, periodic CSI-RS, and semi-persistent CSI-RS respectively.
  • time-frequency resource A and time-frequency resource B exist in the first time slot.
  • Time-frequency resource A is used to transmit PUCCH
  • time-frequency resource B is used to transmit PUSCH.
  • Both time-frequency resource A and time-frequency resource B can use the resource usage rules described in the first optional implementation method above to schedule the time-frequency resources to transmit the corresponding uplink data.
  • time-frequency resource A can use the resource usage rules described in the first optional implementation method above to transmit PUCCH
  • time-frequency resource B can use the resource usage rules described in the second optional implementation method above to transmit PUSCH.
  • the network device determines whether the first time-frequency resource includes allowed time-frequency resources based on resource usage rules.
  • network devices can determine whether the aforementioned first time-frequency resource includes permitted time-frequency resources based on resource usage rules.
  • the resource usage rules mentioned above can be predefined in the communication protocol, and network devices can determine the resource usage rules through the communication protocol. This application does not limit this aspect.
  • the network device may first determine the resource usage rules, and then, based on the resource usage rules and the configured first time-frequency resources, determine whether the first time-frequency resources contain allowed time-frequency resources.
  • the resource usage rules may include: if the first time-frequency resource and the third time-frequency resource do not overlap, the first time-frequency resource may be a time-frequency resource that is allowed to be used.
  • the symbol type corresponding to the first time-frequency resource and the symbol type corresponding to the third time-frequency resource may be the same or different.
  • step S302 describes the process by which the terminal device determines whether the first time-frequency resource includes the allowed time-frequency resource based on the resource usage rule. It will not be repeated here.
  • the resource usage rules may include: if the first time-frequency resource and the third time-frequency resource do not overlap, the fourth time-frequency resource in the first time-frequency resource may be a permitted time-frequency resource.
  • the fourth time-frequency resource may be any time-frequency resource in the first time-frequency resource other than the fifth time-frequency resource, and the time-frequency resource corresponding to the fifth time-frequency resource corresponds to the same frequency domain resource as the third time-frequency resource.
  • step S302 describes the process by which the terminal device determines whether the first time-frequency resource includes the allowed time-frequency resource based on the resource usage rule. It will not be repeated here.
  • the resource usage rules may include: if the first time-frequency resource and the third time-frequency resource do not overlap, the first time-frequency resource may not contain the allowed time-frequency resources.
  • step S302 describes the process by which the terminal device determines whether the first time-frequency resource includes the allowed time-frequency resource based on the resource usage rule. It will not be repeated here.
  • the network device can send first information to the terminal device to configure a first time-frequency resource in a first time slot, and can further determine whether the first time-frequency resource includes allowed time-frequency resources based on resource usage rules, thereby enabling communication between the network device and the terminal device. Based on these resource usage rules, it can be ensured that the determined allowed time-frequency resources do not overlap with the third time-frequency resource. This avoids the terminal device switching the receive filter or transmit filter at any position within the first time slot, thus reducing the complexity of resource scheduling design for the terminal device. Furthermore, the time-frequency resources configured in this way for transmitting uplink and downlink data do not overlap, and uplink and downlink transmissions do not interfere with each other, thereby eliminating interference between uplink and downlink transmissions.
  • Figure 9 is another flowchart illustrating a communication method provided by an embodiment of this application.
  • steps S304 and S305 should be executed before step S301.
  • the communication method may further include the following steps:
  • the terminal device sends second information to the network device.
  • the network device receives this second information.
  • the terminal device may send second information to the network device.
  • the second information can be used to indicate that the terminal device supports the ability to make a transition at a target time point.
  • the ability to make a transition at the target time point may include at least the ability to transition from a first type of symbol to a second type of symbol, and/or the ability to transition from a second type of symbol to a first type of symbol.
  • the terminal device's ability to make changes at the target time point refers to the terminal device's ability to switch filters at the target time point to meet different data transmission requirements during uplink and downlink communication.
  • the terminal device when the terminal device supports the ability to make changes at the target time point, including the ability to change from a first type of symbol to a second type of symbol and the ability to change from a second type of symbol to a first type of symbol, the terminal device can report these two capabilities that support making changes at the target time point to the network device in a unified manner, or report them to the network device separately and independently. This application embodiment does not limit this.
  • the second information may include first indication information and/or second indication information.
  • the first indication information can be used to indicate that the terminal device supports the capability to transform from a first type of symbol to a second type of symbol
  • the second indication information can be used to indicate that the terminal device supports the capability to transform from a second type of symbol to a first type of symbol.
  • the terminal device can independently report its two supported capabilities that can switch at a target time point. This makes the terminal device's reporting capability more flexible and improves the transmission rate.
  • the second information can be used to indicate the terminal device's capability to transform from the first type of symbol to the second type of symbol, and the capability to transform from the second type of symbol to the first type of symbol.
  • terminal devices can uniformly report the two capabilities they support that can be transformed at a target time point. This makes it simpler and easier for network devices to receive and distinguish the capability information reported by terminal devices. Consequently, network devices can perform different scheduling based on the priorities of different terminal devices.
  • the target time point mentioned above may include a time slot boundary. That is, the target time point is located at the boundary between consecutive time slots i and i+1, and the symbol type of the last symbol of time slot i is different from the symbol type of the first symbol of time slot i+1.
  • the second piece of information mentioned above can be used to indicate the terminal device's ability to make transitions at time slot boundaries.
  • the type of symbol may include SBFD symbols or non-SBFD symbols.
  • the first type of symbol may be a non-SBFD symbol
  • the second type of symbol may be an SBFD symbol.
  • the terminal device involved in this application may also choose not to send the aforementioned second information to the network device. If the network device determines that it has not received the information sent by the terminal device, it can determine that the terminal device supports the ability to make changes at the target time point.
  • the capabilities supported by these multiple terminal devices can include two types.
  • the first type is the ability to support transitions at time slot boundaries
  • the second type is the ability to support transitions at any location.
  • the terminal devices involved in the embodiments of this application refer to terminal devices in the communication system 10 that only support the ability to transition at time slot boundaries.
  • multiple terminal devices in the communication system 10 can first report their supported capabilities to the network device.
  • the capabilities reported by the multiple terminal devices can include either of the two types of capabilities mentioned above. That is, the capabilities reported by these multiple terminal devices to the network device can be the ability to support transitions at time slot boundaries, or the capabilities reported by these multiple terminal devices to the network device can be the ability to support transitions at any location.
  • the network device can determine the capabilities supported by each terminal device based on the capabilities reported by these multiple terminal devices.
  • the network device determines that it has received a report of this capability from a terminal device, it can determine that the terminal device can support the capability to perform transitions at time slot boundaries. If the network device determines that it has not received a report of this capability from a terminal device, it can determine that the terminal device can support the capability to perform transitions at any location.
  • the network device determines that it has received a report of this capability from a terminal device, it can determine that the terminal device supports the ability to transition at any location. If the network device determines that it has not received a report of this capability from a terminal device, it can determine that the terminal device supports the ability to transition at time slot boundaries.
  • the network device sends third information to the terminal device.
  • the terminal device receives this third information.
  • the network device can send third information to the terminal device.
  • the third information may include SBFD parameters, which may include the location information of the SBFD symbol and the location of the SBFD resource in the SBFD slot/symbol.
  • the location information of the SBFD symbol is used to indicate the location of the SBFD symbol in the time domain, which can be the SBFD slot/symbol index.
  • the SBFD resource location in the SBFD slot/symbol can be the frequency domain location of the UL subband or DL subband, or the frequency domain location of UL usable frequency domain resources (also known as UL usable RB) and/or DL usable frequency domain resources (also known as DL usable RB).
  • network devices send SBFD resource locations to terminal devices in the following ways, including but not limited to:
  • the network device can send the frequency domain location of the UL subband and/or DL subband to the terminal device.
  • Method 2 The network device can send the frequency domain location of the available frequency domain resources in UL and/or DL to the terminal device.
  • the network device can first send the frequency domain locations of the UL sub-band and/or DL sub-band to the terminal device. Further, the terminal device can determine the frequency domain locations of the available UL frequency domain resources and/or available DL frequency domain resources based on the frequency domain locations of the UL sub-band and/or DL sub-band. Specifically, the terminal device can determine the frequency domain location of the available UL frequency domain resources as the corresponding frequency domain location of the intersection of the UL sub-band's frequency domain location and the UL BWP's frequency domain location. Similarly, the terminal device can determine the frequency domain location of the available DL frequency domain resources as the corresponding frequency domain location of the intersection of the DL sub-band's frequency domain location and the DL BWP's frequency domain location.
  • the terminal device and the network device can determine whether the configured first time-frequency resource includes allowed time-frequency resources based on resource usage rules. If allowed time-frequency resources are included, data can be transmitted. This avoids the terminal device switching the receiving filter or transmitting filter at arbitrary positions within a time slot, thereby reducing the complexity of resource scheduling design for the terminal device.
  • the following will describe another communication method in conjunction with Embodiment 2.
  • the network device sends information to the terminal device to configure the SBFD symbol position within a time slot, the SBFD symbols within the time slot meet certain requirements. This also avoids the terminal device switching the receiving filter or transmitting filter at arbitrary positions within a time slot, thereby reducing the complexity of resource scheduling design for the terminal device.
  • Figure 10 is a flowchart illustrating another communication method provided in an embodiment of this application. This communication method is applicable to the communication system 10 shown in Figure 1 above. As shown in Figure 10, the method may include the following steps:
  • the network device determines the ability of the terminal device to make a transition at a target time point.
  • the network device can determine the terminal device's ability to make transitions at a target time point based on the capabilities reported by the terminal device.
  • the ability to make transitions at the target time point can at least include the ability to transition from a first type of symbol to a second type of symbol, and/or the ability to transition from a second type of symbol to a first type of symbol.
  • step S304 the specific process by which the network device determines the terminal device's ability to make changes at the target time point can be found in the relevant description in step S304 above, and will not be repeated here.
  • the network device sends the first information to the terminal device.
  • the terminal device receives the first information.
  • a network device when a network device determines that a terminal device supports the ability to make changes at a target time point, it can send first information to that terminal device.
  • the first information can be used to indicate that all SBFD symbols corresponding to the first time-frequency resource are located in at least one first time slot, and that the symbols in each of the at least one first time slots are SBFD symbols.
  • the ability to make transitions at the target time point can at least include the ability to transition from a first type of symbol to a second type of symbol, and/or, the ability to transition from a second type of symbol to a first type of symbol.
  • the first time-frequency resource here can refer to the entire time-frequency resource corresponding to one or more consecutive time slots.
  • the first information can be used to indicate that all SBFD symbols corresponding to the first time-frequency resource can start from the first symbol in a time slot and end with the last symbol in that time slot, or end with the last symbol in a time slot after that time slot.
  • all SBFD symbols corresponding to the first time-frequency resource are all SBFD symbols contained in one or more consecutive time slots corresponding to the first time-frequency resource.
  • the first information may include SBFD parameters sent by the network device to the terminal device to configure the location of the SBFD symbol.
  • the first information may include cell-level SBFD configuration information sent by the network device to all terminal devices within the cell via broadcast or public signals. It should be understood that the terminal devices involved in this application are within this cell.
  • the first information may also include UE-level configuration information sent by the network device to the terminal devices supporting the target time point involved in this application. The embodiments of this application are not limited in this respect.
  • the terminal device can receive the aforementioned first information and determine the first time-frequency resource based on the first information.
  • the terminal device after receiving the first information sent by the network device, the terminal device can communicate with the network device on the first time-frequency resource.
  • the terminal device can determine the first time-frequency resource configured by the network device for transmitting downlink data or downlink control information. Furthermore, the network device and the terminal device can transmit downlink data or downlink control information on this first time-frequency resource.
  • the terminal device can determine the first time-frequency resource configured by the network device for transmitting uplink data or uplink control information. Furthermore, the network device and the terminal device can transmit uplink data or uplink control information on this first time-frequency resource.
  • the SBFD symbols in the time slot containing SBFD symbols can satisfy the condition that the SBFD symbols start from the first symbol of a time slot and end at the last symbol of a time slot. This can avoid the terminal device switching filters at any position in the first time slot, thereby reducing the complexity of the terminal device in the resource scheduling design.
  • Figure 11 is another flowchart illustrating a communication method provided in an embodiment of this application.
  • step S1004 can be executed before step S1001
  • step S1005 can be executed after S1001.
  • the communication method may further include:
  • the network device sends the second information to the terminal device.
  • the terminal device receives the second information.
  • the network device may send second information to the terminal device.
  • the second information may be used to indicate that at least one second time slot exists in the first time-frequency resource, and the at least one second time slot simultaneously contains SBFD symbols and non-SBFD symbols.
  • the second information may include SBFD parameters sent by the network device to the terminal device to configure the location of the SBFD symbol.
  • the second information may include cell-level SBFD configuration information sent by the network device to all terminal devices within the cell via broadcast or public signals. It should be understood that the terminal devices involved in this application are within this cell.
  • the aforementioned first information may include UE-level configuration information sent by the network device to the terminal devices supporting the target time point involved in this application.
  • the network device determines the target location information of all SBFD symbols in the first time-frequency resource according to the second information, and generates the first information according to the target location information and the second information.
  • the network device after the network device sends the second information to the terminal device, it can determine the target location information of all SBFD symbols in the first time-frequency resource based on the second information, and can further generate the first information based on the target location information and the second information.
  • the target location information can be obtained by the network device by changing all SBFD symbols in each of at least one second time slot to non-SBFD symbols, or the target location information can be obtained by the network device by changing all non-SBFD symbols in each of at least one second time slot to SBFD symbols.
  • Figure 12 is a schematic diagram of determining target location information provided by an embodiment of this application.
  • the first time-frequency resource is located on three consecutive time slots, namely time slot 1, time slot 2, and time slot 3.
  • the first time-frequency resource includes a first available time-frequency resource and a second available time-frequency resource, and the transmission directions corresponding to the first available time-frequency resource and the second available time-frequency resource are different.
  • the symbol type corresponding to the first available time-frequency resource is an SBFD symbol.
  • Figure 12(a) shows the location information of the SBFD symbol configured in the second information. Specifically, time slots 1 and 3 contain both non-SBFD symbols and SBFD symbols, while time slot 2 contains only SBFD symbols.
  • Figure 12(b) shows the location information of the SBFD symbol configured in the first information. Specifically, time slots 1 and 3 contain only non-SBFD symbols, while time slot 2 contains only SBFD symbols. That is, the SBFD symbols in time slots 1 and 3 in the second information configuration can be changed to non-SBFD symbols to obtain the above-mentioned target location information.
  • Figure 13 is a schematic diagram of another method for determining target location information provided by an embodiment of this application.
  • the first time-frequency resource is located on three consecutive time slots, namely time slot 1, time slot 2, and time slot 3.
  • the first time-frequency resource includes a first available time-frequency resource and a second available time-frequency resource, and the transmission directions corresponding to the first available time-frequency resource and the second available time-frequency resource are different.
  • the symbol type corresponding to the first available time-frequency resource is an SBFD symbol.
  • Figure 13(a) shows the location information of the SBFD symbol configured in the second information. Specifically, time slots 1 and 3 contain both non-SBFD symbols and SBFD symbols, while time slot 2 only contains SBFD symbols.
  • Figure 13(b) shows the location information of the SBFD symbol configured in the first information. Specifically, time slots 1, 2, and 3 all contain only SBFD symbols. That is, the non-SBFD symbols in time slots 1 and 3 in the second information configuration can be changed to SBFD symbols to obtain the above-mentioned target location information.
  • the terminal device can receive second information including cell-level SBFD configuration information and first information including UE-level SBFD configuration information sent by the network device.
  • the terminal device will determine the position of SBFD symbols and non-SBFD symbols according to the second information and the rewriting of the second information by the first information, so as to realize that all SBFD symbols corresponding to the first time frequency resource are located in at least one first time slot, and the symbols in each first time slot in the at least one first time slot are SBFD symbols.
  • all SBFD symbols within the first time-frequency resource satisfy the condition that they start from the first symbol of a time slot and end at the last symbol of a time slot. This avoids the terminal device switching filters at arbitrary positions within the time slot, thereby greatly reducing the complexity of the terminal device in terms of resource scheduling design.
  • Figure 14 is another flowchart illustrating a communication method provided in an embodiment of this application. As shown in Figure 14, the method may further include the following steps:
  • the terminal device sends third information to the network device.
  • the network device receives the third information.
  • the terminal device can send third information to the network device.
  • the third information can be used to indicate the terminal device's ability to make a transition at a target point in time.
  • step S304 the specific process of the terminal device sending third information to the network device can be found in the detailed process described in step S304 above, and will not be repeated here.
  • step S1006 may be performed before step S1001, before step S1002, or before step S1004, and this application is not limited in this regard.
  • step S1006 may be performed after step S1004 and before step S1002.
  • the communication device 150 may include a transceiver unit 151 and a processing unit 152.
  • the communication device 150 may correspond to the terminal device described in Embodiment 1 above, or a component (such as a circuit, chip, or chip system) configured in the terminal device.
  • transceiver unit 151 is used to receive first information from a network device, wherein the first information is used to configure a first time-frequency resource, the first time-frequency resource is included in a second time-frequency resource, the second time-frequency resource corresponds to at least one first time slot, the first time-frequency resource and a third time-frequency resource in the second time-frequency resource do not overlap or partially overlap, and the third time-frequency resource corresponds to each sub-band full-duplex SBFD symbol pair in at least one first time slot.
  • Processing unit 152 is used to determine whether the first time-frequency resource contains allowed time-frequency resources based on resource usage rules.
  • transceiver unit 151 and the processing unit 152 can also be used to implement the steps performed by the terminal device described in Embodiment 1 above. For details, please refer to the relevant description in Embodiment 1, which will not be repeated here.
  • the communication device 150 may correspond to the network device described in Embodiment 1 above, or a component (such as a circuit, chip, or chip system) configured in the network device.
  • the transceiver unit 151 is used to send first information to the terminal device.
  • the first information is used to configure first time-frequency resources, which are included in second time-frequency resources.
  • the second time-frequency resources correspond to at least one first time slot.
  • the first time-frequency resources and the third time-frequency resources in the second time-frequency resources do not overlap or only partially overlap.
  • the third time-frequency resources correspond to each sub-band full-duplex (SBFD) symbol in the at least one first time slot.
  • the processing unit 152 is used to determine whether the first time-frequency resources contain allowed time-frequency resources based on resource usage rules.
  • transceiver unit 151 and the processing unit 152 can also be used to implement the steps performed by the network device described in Embodiment 1 above. For details, please refer to the relevant description in Embodiment 1, which will not be repeated here.
  • the communication device 150 may correspond to the terminal device described in Embodiment 2 above, or a component (such as a circuit, chip, or chip system) configured in the terminal device.
  • the transceiver unit 151 is used to receive first information from the network device. This first information is generated when the terminal device supports the ability to make transitions at a target time point. The first information indicates that all sub-band full-duplex SBFD symbols corresponding to the first time-frequency resource are located within at least one first time slot, and that each symbol within each of the at least one first time slot is an SBFD symbol.
  • the ability to make transitions at the target time point includes the ability to transition from a first type of symbol to a second type of symbol, and/or the ability to transition from a second type of symbol to a first type of symbol.
  • the processing unit 152 is also used to communicate with the network device based on the first time-frequency resource.
  • transceiver unit 151 and the processing unit 152 can also be used to implement the steps performed by the terminal device described in Embodiment 2 above. For details, please refer to the relevant description in Embodiment 1, which will not be repeated here.
  • the communication device 150 may correspond to the network device described in Embodiment 2 above, or a component (such as a circuit, chip, or chip system) configured in the network device.
  • processing unit 152 is used to determine the terminal device's ability to perform transitions at a target time point. This ability includes the ability to transition from a first type of symbol to a second type of symbol, and/or the ability to transition from a second type of symbol to a first type of symbol.
  • Transceiver unit 151 is used to send first information to the terminal device. This first information indicates that all sub-band full-duplex SBFD symbols corresponding to the first time-frequency resource are located within at least one first time slot, and that the symbols within each of the at least one first time slot are SBFD symbols.
  • transceiver unit 151 and the processing unit 152 can also be used to implement the steps performed by the network device described in Embodiment 2 above. For details, please refer to the relevant description in Embodiment 1, which will not be repeated here.
  • FIG 16 is a schematic diagram of another communication device provided in this application.
  • This communication device 160 can be used to implement the operations performed by the terminal device or network device in the above embodiments, or, the communication device 160 can be the terminal device or network device described above.
  • the communication device 160 includes: a processor 161, a memory 162, and a bus system 163.
  • Memory 162 includes, but is not limited to, random access memory (RAM), read-only memory (ROM), erasable programmable read-only memory (PROM), or compact disc read-only memory (CD-ROM). Memory 162 is used to store related instructions and data. Memory 162 stores executable modules or data structures, or subsets thereof, or extended sets thereof:
  • Operation instructions This includes various operation instructions used to perform various operations.
  • Operating system includes various system programs used to implement various basic business functions and handle hardware-based tasks.
  • Figure 16 shows only one memory, but of course, multiple memories can be set as needed.
  • the communication device 160 may further include a transceiver 164.
  • the transceiver 164 may be a communication module or a transceiver circuit. In the embodiments of this application, the transceiver 164 is used to perform the message sending and receiving operations described in the above embodiments.
  • Processor 161 may be a controller, CPU, general-purpose processor, digital signal processor (DSP), application-specific integrated circuit (ASIC), field-programmable gate array (FPGA), or other programmable logic device, transistor logic device, hardware component, or any combination thereof.
  • Processor 161 may also be a combination that implements computing functions, such as a combination of one or more microprocessors, a combination of DSP and microprocessor, etc.
  • bus system 163 includes not only a data bus but may also include a power bus, a control bus, and a status signal bus. However, for clarity, all buses are labeled as bus system 163 in Figure 16. For ease of illustration, Figure 16 is only schematically shown.
  • the communication device 160 can execute the steps of the method performed by the terminal device or network device in the above embodiments. Specifically, when the communication device 160 is used to implement the various steps performed by the terminal device or network device in the communication method provided in the embodiments, the processor 161 can implement the function of the processing unit 152, and the transceiver 164 can implement the function of the transceiver unit 151.
  • the processor in the embodiments of this application can be an integrated circuit chip with signal processing capabilities.
  • each step of the above method embodiments can be completed by the integrated logic circuitry in the processor's hardware or by instructions in software form.
  • the processor can be a general-purpose processor, DSP, ASIC, FPGA, or other programmable logic devices, discrete gate or transistor logic devices, or discrete hardware components. It can implement or execute the methods, steps, and logic block diagrams disclosed in the embodiments of this application.
  • the general-purpose processor can be a microprocessor or any conventional processor.
  • the steps of the methods disclosed in the embodiments of this application can be directly embodied as being executed by a hardware decoding processor, or executed by a combination of hardware and software modules in the decoding processor.
  • the software modules can be located in random access memory, flash memory, read-only memory, programmable read-only memory, electrically erasable programmable memory, registers, or other mature storage media in the art. This storage medium is located in memory, and the processor reads the information in the memory and, in conjunction with its hardware, completes the steps of the above methods.
  • Non-volatile memory can be ROM, programmable read-only memory (PROM), EPROM, electrically erasable programmable read-only memory (EEPROM), or flash memory.
  • Volatile memory can be RAM, which is used as an external cache.
  • RAM random access memory
  • DRAM dynamic random access memory
  • SDRAM synchronous dynamic random access memory
  • DDR SDRAM double data rate synchronous dynamic random access memory
  • ESDRAM enhanced synchronous dynamic random access memory
  • SLDRAM synchronous linked dynamic random access memory
  • DR RAM direct rambus RAM
  • This application also provides a computer-readable medium having a computer program stored thereon, which, when executed by a computer, implements the method steps performed by the first device, the second device, or the sensing device in the above embodiments.
  • This application also provides a computer program product that, when executed by a computer, implements the method steps performed by the first device, the second device, or the sensing device in the above embodiments.
  • This application also provides a chip, which includes at least a processor.
  • the processor is used to execute computer execution instructions to cause a device on which the chip is mounted to perform the method steps performed by the first device, the second device, or the sensing device in the above embodiments.
  • the chip may also include interface circuitry.
  • This interface circuitry is used to receive computer execution instructions and transmit them to the processor.
  • This application also provides a chip system including a processor for supporting the apparatus on which the chip system is installed to implement the method steps performed by the first device, the second device, or the sensing device in the above embodiments, such as generating or processing data and/or information involved in the above methods.
  • the chip system further includes a memory for storing program instructions and data necessary for the data transmitting device.
  • the chip system may be composed of chips or may include chips and other discrete devices.
  • the communication system includes at least the terminal device and network device described above.
  • the terminal device and network device work together to implement the communication method described in the preceding embodiments.
  • the computer instructions can be transmitted from one website, computer, server, or data center to another via wired (e.g., coaxial cable, fiber optic, digital subscriber line (DSL)) or wireless (e.g., infrared, wireless, microwave, etc.) means.
  • the computer-readable storage medium can be any available medium that a computer can access or a data storage device such as a server or data center that integrates one or more available media.
  • the available medium can be magnetic media (e.g., floppy disk, hard disk, magnetic tape), optical media (e.g., digital video disc (DVD), or semiconductor media (e.g., solid-state disk (SSD), etc.).

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Abstract

La présente demande se rapporte au domaine technique des communications sans fil et en particulier à un procédé de communication et à un appareil associé. Le procédé consiste à : recevoir des premières informations d'un dispositif réseau, les premières informations étant utilisées pour configurer une première ressource temps-fréquence, la première ressource temps-fréquence étant comprise dans une deuxième ressource temps-fréquence, la deuxième ressource temps-fréquence correspondant à au moins un premier créneau temporel, la première ressource temps-fréquence ne chevauchant pas ou chevauchant partiellement une troisième ressource temps-fréquence dans la deuxième ressource temps-fréquence, et la troisième ressource temps-fréquence correspondant à chaque symbole en duplex intégral de sous-bande (SBFD) dans le ou les premiers créneaux temporels; et sur la base d'une règle d'utilisation des ressources, déterminer si la première ressource temps-fréquence comprend des ressources temps-fréquence dont l'utilisation est autorisée. L'utilisation du procédé permet de réduire la complexité des dispositifs terminaux dans la gestion d'une conception de planification des ressources et d'éliminer l'interférence entre des transmissions en liaison montante et en liaison descendante.
PCT/CN2025/081721 2024-04-03 2025-03-11 Procédé de communication et appareil associé Pending WO2025209119A1 (fr)

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