WO2022188655A1 - 一种数据传输方法及装置 - Google Patents

一种数据传输方法及装置 Download PDF

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Publication number
WO2022188655A1
WO2022188655A1 PCT/CN2022/078404 CN2022078404W WO2022188655A1 WO 2022188655 A1 WO2022188655 A1 WO 2022188655A1 CN 2022078404 W CN2022078404 W CN 2022078404W WO 2022188655 A1 WO2022188655 A1 WO 2022188655A1
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WIPO (PCT)
Prior art keywords
downlink reference
reference signals
reference signal
occasions
terminal device
Prior art date
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PCT/CN2022/078404
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English (en)
French (fr)
Inventor
张云昊
吴艺群
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华为技术有限公司
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Publication of WO2022188655A1 publication Critical patent/WO2022188655A1/zh

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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L5/00—Arrangements affording multiple use of the transmission path
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W72/00—Local resource management
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W72/00—Local resource management
    • H04W72/04—Wireless resource allocation
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W72/00—Local resource management
    • H04W72/12—Wireless traffic scheduling
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W72/00—Local resource management
    • H04W72/12—Wireless traffic scheduling
    • H04W72/1263—Mapping of traffic onto schedule, e.g. scheduled allocation or multiplexing of flows
    • H04W72/1268—Mapping of traffic onto schedule, e.g. scheduled allocation or multiplexing of flows of uplink data flows
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L5/00—Arrangements affording multiple use of the transmission path
    • H04L5/003—Arrangements for allocating sub-channels of the transmission path
    • H04L5/0048—Allocation of pilot signals, i.e. of signals known to the receiver

Definitions

  • the present application relates to the field of communication technologies, and in particular, to a data transmission method and apparatus.
  • RRC radio resource control
  • the terminal device in the RRC inactive state can perform uplink data transmission based on the unlicensed resource, for example, perform uplink small packet data transmission.
  • the base station preconfigures physical uplink shared channel (physical uplink shared channel, PUSCH) resources and transmission parameters for uplink data transmission.
  • PUSCH physical uplink shared channel
  • the terminal device can directly use the pre-configured PUSCH resources and PUSCH transmission parameters to send data to the base station, without receiving the dynamic uplink grant from the base station, and without establishing a connection with the base station through the random access process. . In this way, the signaling overhead can be reduced, and the power consumption of the terminal device can be reduced.
  • the present application provides a data transmission method and apparatus to reduce the complexity of receiving uplink data sent on unlicensed resources.
  • the embodiments of the present application provide a communication method, which is used to implement functions on the terminal device side.
  • the method can be applied to a terminal device or a chip in the terminal device, and the embodiments of the present application are not limited to the specifics of the method. executor.
  • the method may be jointly implemented by multiple functional modules on the terminal device side, and the method executed by each functional module is also within the protection scope of the present application.
  • the terminal device receives the first configuration information from the access network device, and the first configuration information is used to indicate the first set of configuration authorization CG resource configuration and the first correspondence;
  • the first correspondence is the correspondence between X CG occasions and N1 downlink reference signals in the first set of CG resource configuration; X and N1 are integers greater than 0; the terminal device receives N1 downlink reference signals, and transmits N1 downlink reference signals from the N1 downlink reference signals.
  • a first downlink reference signal is determined in the reference signal, wherein the CG occasion corresponding to the first downlink reference signal in the first correspondence is used to carry uplink data of the terminal device when the terminal device is in a disconnected state.
  • the access network device configures the corresponding relationship between the CG timing and the downlink reference signal for the terminal device.
  • the terminal device sends uplink data (such as small packet data) at the CG timing corresponding to a certain downlink reference signal
  • the access network can use the corresponding receiving beam corresponding to the reference signal to receive the uplink data at the CG opportunity, thereby effectively improving the receiving performance of the access network device for receiving the uplink data in the unlicensed resource.
  • the N1 downlink reference signals are part of the downlink reference signals in one reference signal transmission cycle.
  • X CG occasions are located in T1 CG cycles, one CG cycle includes X/T1 CG occasions, one CG occasion corresponds to one or more downlink reference signals in N1 downlink reference signals, and T1 is Integer greater than 0.
  • each CG period in T1 CG periods corresponds to N1 downlink reference signals, and one CG opportunity corresponds to N1/(X/T1) downlink reference signals; or, in T1 CG periods Each CG period corresponds to N1/T1 downlink reference signals, and one CG occasion corresponds to N1/X downlink reference signals.
  • the number of downlink reference signals corresponding to each CG occasion is the same, which can reduce the complexity of configuring the first correspondence.
  • At least one downlink reference signal in the N1 downlink reference signals corresponds to a first number of CG opportunities in the X CG opportunities, and each downlink reference signal in the at least one downlink reference signal corresponds to a different number
  • the downlink reference signals except at least one downlink reference signal among the N1 downlink reference signals correspond to the CG opportunities other than the first number of CG opportunities among the X CG opportunities, and each downlink reference signal corresponds to Same amount of CG timing.
  • the number of downlink reference signals corresponding to different CG timings can be different, so that the corresponding relationship is more flexible, and the terminal device also has high flexibility when selecting CG timings, which is convenient for data transmission in a disconnected state.
  • the ratio of the number of CG occasions corresponding to each of the N1 downlink reference signals is a preset ratio.
  • the CG occasion corresponds to at least one repetition time-frequency resource and one demodulation reference signal DMRS resource, and at least one repetition time-frequency resource is located in the same CG period.
  • the HARQ process numbers corresponding to the X CG occasions are the same, and the HARQ process numbers corresponding to the X CG occasions are based on the start of the physical uplink shared channel PUSCH included in the i-th CG cycle in the T1 CG cycles
  • the time position is determined, and i is an integer greater than or equal to 1 and less than or equal to T1; or, the HARQ process ID of the HARQ process corresponding to the CG occasion included in a CG cycle is based on the start of the physical uplink shared channel PUSCH in a CG cycle.
  • the starting time position is determined; or, the HARQ process number corresponding to the first CG occasion included in a CG cycle is determined according to the starting time position of the PUSCH in a CG cycle and the DMRS resources included in the first CG occasion; the first CG
  • the timing is any CG timing in a CG cycle.
  • X CG opportunities can correspond to multiple HARQ process IDs, and the CG opportunities corresponding to the downlink reference signal selected by the terminal device are located in different CG cycles, they can correspond to multiple HARQ process IDs.
  • a specific HARQ process number needs to be selected, so that there is a greater chance to obtain the required HARQ process. This method can improve the probability that the CG opportunity is used in each CG cycle, thereby improving the flexibility of data transmission.
  • each CG opportunity corresponding to the selected downlink reference signal can correspond to multiple HARQ process numbers, which can improve the selection of the terminal device.
  • the flexibility of the HARQ process number avoids that the required HARQ process cannot be obtained when transmission is required. This method can improve the probability that each CG opportunity is used, thereby improving the flexibility of data transmission.
  • the first configuration information includes first indication information, where the first indication information is used to indicate information of the N1 downlink reference signals.
  • the first indication information indicates indices of N1 downlink reference signals; or, the first indication information indicates at least one of N1 and an index of a target downlink reference signal, and the target downlink reference signal is N1 downlink reference signals The downlink reference signal at the specified location in the reference signal.
  • N1 downlink reference signals can be flexibly indicated, thereby reducing signaling overhead.
  • the method further includes: reporting the index of the target downlink reference signal to the access network device.
  • the N1 downlink reference signals include downlink reference signals associated with the terminal device when it enters the inactive state.
  • the N1 downlink reference signals are associated with the terminal equipment, which can increase the probability of the N1 downlink reference signals being selected by the terminal equipment, thereby reducing signaling overhead and improving the flexibility of terminal equipment data transmission.
  • the method further includes: receiving second configuration information from the access network device, where the second configuration information is used to indicate N2 downlink reference signals and a second correspondence; the second correspondence is the first The correspondence between the Y CG opportunities in the set of CG resource configuration and the N2 downlink reference signals, where the N2 downlink reference signals are part of the downlink reference signals included in the downlink reference signal burst; Y and N2 are integers greater than 0.
  • N1 is smaller than N2.
  • X CG opportunities are located in T1 CG periods
  • Y CG opportunities are located in T2 CG periods
  • T2 CG periods are adjacent to T1 CG periods
  • T1 and T2 are integers greater than 0
  • Y One of the CG opportunities is located in one of the T2 CG cycles
  • one of the Y CG opportunities corresponds to one or more downlink reference signals in the N2 downlink reference signals.
  • One cycle corresponds to one or more downlink reference signals in the N2 downlink reference signals.
  • the HARQ process numbers corresponding to the Y CG occasions are the same, and the HARQ process numbers corresponding to the Y CG occasions are based on the start of the physical uplink shared channel PUSCH included in the jth CG cycle in the T2 CG cycles
  • the time position is determined, and j is an integer greater than or equal to 1 and less than or equal to T2; or, the HARQ process ID of the HARQ process corresponding to the CG occasion included in a CG cycle is based on the starting time position of the PUSCH in a CG cycle determined; or, the HARQ process number corresponding to the first CG occasion included in a CG cycle is determined according to the start time position of the PUSCH in a CG cycle and the DMRS resources included in the first CG occasion; the first CG occasion is a Any CG timing in the CG cycle.
  • the second configuration information includes second indication information, where the second indication information is used to indicate N2 downlink reference signals.
  • the embodiments of the present application provide a communication method, which is used to implement functions on the device side of the access network, for example, can be applied to the access network device or a chip in the access network device, and the embodiment of the present application is not limited to The specific execution body of this method.
  • the method may be implemented by a plurality of functional modules on the device side of the access network interacting together, and the method executed by each functional module is also within the protection scope of the present application.
  • the access network device sends first configuration information to the terminal device, where the first configuration information is used to indicate the first set of configuration authorization CG resource configuration and the first correspondence ;
  • the first correspondence is the correspondence between X CG occasions and N1 downlink reference signals in the first set of CG resource configurations;
  • X, N1 are integers greater than 0;
  • N1 downlink reference signals are sent to the terminal equipment, and received from Uplink data of the terminal device; wherein, the CG timing carrying the uplink data is the CG timing corresponding to the first downlink reference signal in the first correspondence, and the first downlink reference signal is determined from N1 downlink reference signals.
  • the first configuration information may be generated at the RRC layer, the MAC layer or the physical layer.
  • the N1 downlink reference signals may be sent at the physical layer.
  • Uplink data from the terminal can be received at the physical layer.
  • the physical layer can deliver upstream data to the RLC layer.
  • the RLC layer can deliver the uplink data to the PDCP layer.
  • an embodiment of the present application provides a communication device, where the communication device may be a terminal device, a module capable of implementing functions on the terminal device side, or a chip capable of being provided inside the terminal device.
  • the communication device has the function of implementing the first aspect.
  • the communication device includes modules or units or means corresponding to some or all of the steps involved in the first aspect.
  • the functions, units or means It can be implemented by software, or by hardware, or by executing corresponding software by hardware.
  • the communication device includes a processing unit and a communication unit, wherein the communication unit can be used to send and receive signals to realize communication between the communication device and other devices, for example, the communication unit is used to receive data from Configuration information of the access network equipment; the processing unit can be used to perform some internal operations of the communication device.
  • the functions performed by the processing unit and the communication unit may correspond to the operations involved in the first aspect above.
  • the communication apparatus includes a processor, and may also include a transceiver, where the transceiver is used for transmitting and receiving signals, and the processor utilizes the transceiver to complete any possible implementation of the first aspect above.
  • the communication apparatus may further include one or more memories, where the memories are configured to be coupled with the processor, and the memories may store computer programs or instructions for implementing the functions involved in the first aspect above.
  • the processor may execute computer programs or instructions stored in the memory, and when the computer programs or instructions are executed, cause the communication apparatus to implement the method in any possible design or implementation manner of the first aspect.
  • the communication device includes a processor, which may be operative to couple with the memory.
  • the memory may store computer programs or instructions that implement the functions involved in the first aspect above.
  • the processor may execute computer programs or instructions stored in the memory, and when the computer programs or instructions are executed, cause the communication apparatus to implement the method in any possible design or implementation manner of the first aspect.
  • the communication device includes a processor and an interface circuit, wherein the processor is configured to communicate with other devices through the interface circuit, and execute the method in any possible design or implementation of the first aspect above .
  • an embodiment of the present application provides a communication device, where the communication device may be an access network device, a module capable of implementing functions on the access network device side, or a chip capable of being provided inside the access network device.
  • the communication device has the function of implementing the second aspect.
  • the communication device includes modules or units or means corresponding to some or all of the operations involved in the second aspect, and the modules, units or means may be implemented by software. , or implemented by hardware, or by executing corresponding software by hardware.
  • the communication device includes a processing unit and a communication unit, wherein the communication unit can be used to send and receive signals to implement communication between the communication device and other devices, for example, the communication unit is used to receive data from Uplink information of the terminal equipment; the processing unit can be used to perform some internal operations of the communication device.
  • the functions performed by the processing unit and the communication unit may correspond to the operations involved in the second aspect above.
  • the communication apparatus includes a processor, and may further include a transceiver, where the transceiver is used for transmitting and receiving signals, and the processor utilizes the transceiver to accomplish any possible implementation of the second aspect above.
  • the communication apparatus may further include one or more memories, where the memories are configured to be coupled with the processor, and the memories may store computer programs or instructions for implementing the functions involved in the second aspect above.
  • the processor can execute computer programs or instructions stored in the memory, and when the computer programs or instructions are executed, cause the communication apparatus to implement the method in any possible design or implementation manner of the second aspect.
  • the communication device includes a processor, which may be operative to couple with the memory.
  • the memory may store computer programs or instructions for implementing the functions involved in the second aspect above.
  • the processor can execute computer programs or instructions stored in the memory, and when the computer programs or instructions are executed, cause the communication apparatus to implement the method in any possible design or implementation manner of the second aspect.
  • the communication device includes a processor and an interface circuit, wherein the processor is configured to communicate with other devices through the interface circuit, and execute the method in any possible design or implementation of the second aspect above .
  • the processor may be implemented by hardware or by software.
  • the processor may be a logic circuit, an integrated circuit, etc.; when implemented by software
  • the processor may be a general-purpose processor, which is implemented by reading software codes stored in a memory.
  • the above processors may be one or more, and the memory may be one or more.
  • the memory may be integrated with the processor, or the memory may be provided separately from the processor. In a specific implementation process, the memory and the processor may be integrated on the same chip, or may be separately provided on different chips. The embodiment of the present application does not limit the type of the memory and the manner of setting the memory and the processor.
  • an embodiment of the present application provides a communication system, where the communication system includes the communication device described in the third aspect and the communication device described in the fourth aspect.
  • an embodiment of the present application provides a computer-readable storage medium, where computer-readable instructions are stored in the computer storage medium, and when a computer reads and executes the computer-readable instructions, the computer executes the first A method in any possible design of the aspect or the second aspect.
  • an embodiment of the present application provides a computer program product that, when a computer reads and executes the computer program product, causes the computer to execute the method in any possible design of the first aspect or the second aspect.
  • an embodiment of the present application provides a chip, where the chip includes a processor, and the processor is coupled to a memory and configured to read and execute a software program stored in the memory, so as to implement the above-mentioned first aspect or The method in any possible design of the second aspect.
  • FIG. 1 is a schematic diagram of a network architecture to which this embodiment of the application is applicable;
  • FIG. 2 is a schematic diagram of an RRC state transition provided by an embodiment of the present application.
  • FIG. 3 is a schematic diagram of an SSB provided in an embodiment of the present application.
  • FIG. 4 is a schematic diagram of CG timing distribution provided by an embodiment of the present application.
  • FIG. 5(a) and FIG. 5(b) are schematic diagrams of CG timing numbering provided by this embodiment of the present application.
  • FIG. 6 is a schematic flowchart of a data transmission method provided by an embodiment of the present application.
  • FIG. 7 is a schematic diagram of downlink reference signal distribution according to an embodiment of the present application.
  • FIG. 8 is a schematic diagram of CG timing distribution provided by an embodiment of the present application.
  • FIG. 9 is a schematic diagram of CG timing distribution provided by an embodiment of the present application.
  • FIG. 10 is a schematic diagram of CG timing distribution provided by an embodiment of the present application.
  • FIG. 11 is a schematic diagram of CG timing distribution provided by an embodiment of the present application.
  • FIG. 12 is a schematic diagram of CG timing distribution provided by an embodiment of the present application.
  • FIG. 13 is a schematic diagram of a correspondence between a transmit beam and a downlink reference signal provided by an embodiment of the present application;
  • FIG. 14 is a schematic structural diagram of a communication device according to an embodiment of the present application.
  • FIG. 15 is a schematic structural diagram of a communication device according to an embodiment of the present application.
  • the embodiments of the present application can be applied to various mobile communication systems, such as: a new radio (new radio, NR) system, a long term evolution (long term evolution, LTE) system, and other communication systems such as future communication systems. make restrictions.
  • NR new radio
  • LTE long term evolution
  • the NR system can also be called a 5G system.
  • the terminal device may be referred to as a terminal for short, which is a device with a wireless transceiver function or a chip that can be provided in the device.
  • the terminal device may also be referred to as user equipment (user equipment, UE), access terminal, or the like.
  • the terminal device in the embodiments of the present application may be a mobile phone (mobile phone), a tablet computer (pad), a computer with a wireless transceiver function, a virtual reality (virtual reality, VR) terminal, an augmented reality (augmented reality) , AR) terminal, wireless terminal in industrial control, etc.
  • the device for implementing the function of the terminal device may be the terminal device; it may be a module or unit that can be applied to the terminal device; or it may be a device capable of supporting the terminal device to realize the function, such as a chip system, which The device can be installed in the terminal device or used in combination with the terminal device.
  • the chip system may be composed of chips, or may include chips and other discrete devices.
  • Access network equipment It can be wireless access equipment under various standards in a wireless network.
  • an access network equipment can be a RAN node that connects a terminal device to a wireless network, and can also be called a RAN equipment or a base station.
  • Some examples of access network equipment are: generation Node B (gNodeB), transmission reception point (TRP), evolved node B (evolved node B, eNB), radio network controller (radio network) controller, RNC), node B (node B, NB), base station controller (BSC), base transceiver station (base transceiver station, BTS), home base station (for example, home evolved Node B, or home Node B , HNB), base band unit (base band unit, BBU), or wireless fidelity (wireless fidelity, Wi-Fi) access point (access point, AP), etc.
  • generation Node B gNodeB
  • TRP transmission reception point
  • eNB evolved node B
  • RNC radio network controller
  • node B node
  • the access network device may be a centralized unit (centralized unit, CU) node, a distributed unit (distributed unit, DU) node, or an access network device including a CU node and a DU node.
  • the interface between the CU and the DU may be referred to as the F1 interface.
  • the CU node may be a CU-CP (control plane, control plane) node, a CU-UP (user plane, user plane) node, or a node including a CU-CP node and a CU-UP node.
  • the interface between the DU and the CU-CP may be called the F1-C interface, and the interface between the DU and the CU-UP may be called the F1-U interface.
  • the access network equipment may be other apparatuses that provide wireless communication functions for the terminal equipment.
  • the embodiments of the present application do not limit the specific technology and specific device form adopted by the access network device. For convenience of description, in this embodiment of the present application, a device that provides a wireless communication function for a terminal device is referred to as an access network device.
  • the device for implementing the function of the access network device may be the access network device; it may be a module or unit that can be applied to the access network device; or it may be capable of supporting the access network device to implement the function
  • the device such as a chip system, can be installed in the access network equipment or used in matching with the access network equipment.
  • the foregoing DU, CU, CU-CP and CU-UP may be functional modules, hardware structures, or functional modules+hardware structures, which are not limited.
  • the CU and DU can be divided according to the protocol layer of the wireless network: for example, the functions of the packet data convergence layer protocol (PDCP) layer and above are set in the CU, and the functions of the protocol layers below the PDCP layer are set.
  • a DU may include a radio link control (RLC) layer, a media access control (MAC) layer, and a physical (PHY) layer.
  • RLC radio link control
  • MAC media access control
  • PHY physical
  • the CU-CP may include a radio resource control (radio resource control, RRC) layer and a PDCP layer
  • the CU-UP may include a service data adaptation (service data adaptation protocol, SDAP) layer and a PDCP layer.
  • RRC radio resource control
  • SDAP service data adaptation protocol
  • the PDCP layer in CU-CP may be referred to as PDCP-C
  • the PDCP layer in CU-UP may be referred to as PDCP-U.
  • the DU may include the functions of the RLC layer and the MAC layer, and part of the functions of the PHY layer.
  • the DU may include functions of higher layers in the PHY layer or functions implemented by software modules.
  • the functions of the upper layers in the PHY layer may include CRC checking, channel coding, rate matching, scrambling, modulation, and layer mapping; or, the functions of the upper layers in the PHY layer may include CRC checking, channel coding, rate matching, adding scrambling, modulation, layer mapping and precoding.
  • the functions of the lower layers in the PHY layer can be implemented by another network element independent from the DU, wherein the functions of the lower layers in the PHY layer can include precoding, resource mapping, physical antenna mapping and radio frequency functions; or, the functions of the lower layers in the PHY layer can be Includes resource mapping, physical antenna mapping, and radio frequency functions.
  • This embodiment of the present application does not limit the function division of the upper layer and the lower layer in the PHY layer.
  • the above-mentioned division of the processing functions of CU and DU according to the protocol layer is only an example, and can also be divided in other ways, for example, the functions of the protocol layer above the RLC layer are set in the CU, and the functions of the RLC layer and the following protocol layers are set.
  • the function is set in the DU.
  • the CU or DU can be divided into functions with more protocol layers, and for example, the CU or DU can also be divided into partial processing functions with protocol layers.
  • some functions of the RLC layer and functions of the protocol layers above the RLC layer are placed in the CU, and the remaining functions of the RLC layer and the functions of the protocol layers below the RLC layer are placed in the DU.
  • the functions of the CU or DU can also be divided according to the service type or other system requirements, for example, by the delay, the functions whose processing time needs to meet the delay requirements are set in the DU, and do not need to meet the delay.
  • the required functionality is set in the CU.
  • the CU may also have one or more functions of the core network.
  • the CU can be set on the network side to facilitate centralized management; the DU can have multiple radio functions, or the radio functions can be set remotely. This embodiment of the present application does not limit this.
  • the above-mentioned CU, DU, CU-CP, or CU-UP can be either a software module, a hardware structure, or a software module+hardware structure, which is not limited.
  • FIG. 1 is a schematic diagram of a network architecture to which an embodiment of the present application is applied.
  • a terminal device can access a wireless network through an access network device to obtain services from an external network (eg, the Internet) through the wireless network, or communicate with other devices through the wireless network, such as with other terminal devices.
  • an external network eg, the Internet
  • the access network device can send a downlink reference signal to the terminal device, and the terminal device can realize synchronization with the access network device and obtain system information according to the downlink reference signal.
  • the downlink reference signal is a synchronous signal/physical broadcast channel block (SS/PBCH block, SSB), for a cell (or carrier), the access network equipment can transmit through different transmit beams SSB, to complete the broadcast beam coverage of the cell.
  • the transmission time of each transmission beam is different.
  • the access network device transmits SSB#0 through transmit beam 0, transmits SSB#1 through transmit beam 1, transmits SSB#2 through transmit beam 2, etc. It can be understood that transmit beam 0 corresponds to SSB#0, Transmit beam 1 corresponds to SSB#1, and transmit beam 2 corresponds to SSB#2.
  • the set of SSBs sent by the access network device in one beam scanning process may be called an SSB burst set (burst set).
  • the period of the SSB burst set is equivalent to the period of the SSB corresponding to a specific beam, and can be configured as 5ms (milliseconds), 10ms, 20ms, 40ms, 80ms, or 160ms, etc.
  • the SSB burst set corresponding to frequency range (FR) 1 can be configured with a maximum of 8 SSBs
  • the SSB burst set corresponding to FR2 can be configured with a maximum of 64 SSBs. All SSBs are sent in one round in a burst set.
  • one SSB burst set includes multiple SSBs, and the beams of each SSB may be the same or different.
  • the carrier frequency band is less than or equal to 3 GHz, there are at most 4 SSBs in one SSB burst set.
  • the embodiments of the present application can be applied to various scenarios, for example, can be applied to a scenario in which a terminal device is in an RRC inactive state and performs small data (small data) transmission.
  • small packet data transmission can specifically cover smartphone-related services, such as heartbeat packets or push messages of applications (application, APP); and non-smartphone-related services, such as periodic data of wearable devices (for example, APP).
  • Heartbeat packets periodic data sent by industrial wireless sensor networks, etc.
  • the specific size of the small packet data in the embodiment of the present application may not be limited.
  • a data packet of 100-300 bytes may be regarded as a small packet of data, and for example, a data packet that can be sent in one time slot may be regarded as a small packet.
  • Data for example, a time slot with a bandwidth resource of 5M and a subcarrier interval of 30kHz, if it is modulated by quadrature phase shift keying (QPSK), about 500 bytes can be transmitted
  • QPSK quadrature phase shift keying
  • the user plane data packets and/or control plane data packets sent in the inactive state may be regarded as small data packets.
  • the embodiments of the present application may be applied to a scenario of license-free uplink small packet data transmission.
  • the access network device pre-configures the PUSCH resources and transmission parameters for uplink data transmission for the terminal device in a semi-static manner.
  • the terminal device When the terminal device has uplink data to send, it directly uses the pre-configured PUSCH resources and parameters to send the The access network device sends data without receiving dynamic authorization from the access network device and without performing a random access procedure.
  • pre-configured uplink resource (PUR) transmission in the LTE system and transmission based on a configured grant (CG) in the NR system both belong to the category of uplink grant-free transmission.
  • PUR pre-configured uplink resource
  • CG configured grant
  • Both PUR-based transmission and CG-based transmission are both the access network equipment configuring resources and transmission parameter configurations for terminal equipment through signaling, such as one or more of the following configurations: period of time domain resources, open-loop power control correlation Parameters, waveform, redundancy version sequence, number of repetitions, frequency hopping mode, resource allocation type, number of hybrid automatic repeat request (HARQ) processes, demodulation reference signal related parameters, modulation and coding scheme table, resources Block group size, as well as time domain resources, frequency domain resources, modulation and coding schemes (MCS), etc.
  • HARQ hybrid automatic repeat request
  • the terminal device can perform data transmission without state transition, thus significantly reducing signaling overhead and power consumption of the terminal device .
  • the access network device may configure the terminal device with a configured grant (configured grant, CG) resource for transmission of an uplink channel (eg, PUSCH) carrying uplink data.
  • CG configured grant
  • the terminal device When the terminal device has uplink data to send, it can directly use the CG resource to send data to the access network device without receiving a dynamic grant from the access network device and without sending a preamble.
  • Data transmission based on CG resources may also be referred to as grant free (GF) data transmission. Since the terminal equipment does not need to switch to the RRC connected state by sending the preamble, signaling overhead and power consumption of the terminal equipment can be further saved.
  • the access network equipment does not know the location of the terminal equipment in the RRC inactive state. information (or channel information), and thus do not know what kind of receiving beam is used to receive the uplink data sent by the terminal device on the CG resource.
  • the access network device does not know the channel information of the terminal device, the receiving complexity of the access network device will be significantly increased, and the access network device cannot accurately determine the beam for sending the feedback information of the uplink data to the terminal device, causing the terminal device to The performance penalty for the device receiving feedback information.
  • the embodiments of the present application will optimize data transmission based on CG resources, reduce the receiving complexity of the access network equipment, and improve the flexibility of data transmission.
  • the RRC state of the terminal equipment can be transitioned in the following states: RRC idle state, RRC connected state and RRC inactive state.
  • the access network device knows that the terminal device is within the coverage of the access network device or within the management scope of the access network device, for example, the access network device knows that the terminal device is managed by the access network device
  • the core network knows which access network device covers or manages the terminal device, and the core network knows through which access network device the terminal device can be located or found.
  • the access network device may send the terminal device-specific physical downlink control channel (physical downlink control channel, PDCCH) and/or physical downlink shared channel (physical downlink shared channel) to the terminal device, PDSCH), and/or the terminal device may send a terminal device-specific physical uplink shared channel (PUSCH) and/or a physical uplink control channel (physical uplink control channel, PUCCH) to the access network device.
  • the terminal device can receive the uplink scheduling indication or the downlink scheduling indication sent by the access network device through the PDCCH.
  • the terminal device may send hybrid automatic repeat request (HARQ) information to the access network device through the PUCCH, which is used to indicate the demodulation of the downlink data by the terminal device.
  • HARQ hybrid automatic repeat request
  • the terminal equipment When the terminal equipment is in the RRC idle state, the RRC connection between the terminal equipment and the access network is released. At this time, the terminal device may receive a paging message, a broadcast channel, and/or system information and the like from the access network device.
  • the access network device may not know whether the terminal device is within the coverage of the access network device or whether it is within the management range of the access network device, for example, the access network The device may not know whether the terminal device is within the coverage of the cell managed by the access network device; the core network may not know which access network device the terminal device is within the coverage or management range, and the core network may not know Through which access network device the terminal device can be located or found.
  • the access network device may not know whether the terminal device is within the coverage of the access network device or whether it is within the management scope of the access network device. For example, the access network device may not know whether the terminal device is within the coverage of the access network device.
  • the access network device is within the coverage of the cell managed by the access network device; the core network may know which access network device or access network devices the terminal device is within the coverage or management range, and the core network may know which access network device or access network devices Locate or find the terminal device.
  • the terminal device may receive a paging message, a synchronization signal, a broadcast message, and/or system information, etc. from the access network device.
  • the RRC inactive state and the RRC idle state may be collectively referred to as a disconnected state or an RRC disconnected state.
  • FIG. 2 it is an example diagram of an RRC state transition provided by an embodiment of the present application.
  • Figure 2 the following possible conversion scenarios can be included:
  • the access network device may send an RRC connection release (RRC connection release) message to the terminal device, so that the terminal device is converted from the RRC connected state to the RRC idle state.
  • RRC connection release RRC connection release
  • the access network device may send an RRC connection suspend (RRC connection suspend) message or an RRC connection release message to the terminal device, so that the terminal device is converted from the RRC connected state to the RRC inactive state.
  • RRC connection suspend RRC connection suspend
  • RRC connection release RRC connection release message
  • the terminal device may transition from the RRC idle state to the RRC connected state through the RRC connection establishment process with the access network device.
  • the RRC establishment process may be triggered by the upper layer of the terminal device.
  • the RRC establishment process is triggered by the higher layer of the terminal device.
  • the RRC establishment process may also be triggered by the access network device.
  • the access network device sends a paging message to the terminal device, where the paging message includes the identifier of the terminal device.
  • the terminal device triggers the RRC establishment process.
  • the RRC state of the terminal device may be converted to the RRC connected state through an RRC connection establishment or RRC connection recovery process.
  • the access network device can make the terminal device transition from the RRC inactive state to the RRC idle state through a release process.
  • beamforming (BF) technology can be used to obtain a beam with good directivity, so as to improve the antenna gain and improve the received power of the signal in the transmitting direction.
  • the beamforming in the communication system is not limited to high frequency bands, but can also be applied to low frequency bands less than 6 GHz.
  • a beam can be understood as a communication channel, and the beam can be a wide beam, a narrow beam, or other types of beams. Different beams can be considered as different communication channels, and the same information or different information can be sent through different beams.
  • Beams include transmit beams and receive beams. Transmit beams can refer to the distribution of signal strengths formed in different directions in space when signals are transmitted through antennas. Receive beams can refer to antenna arrays that strengthen or weaken wireless signals in different directions in space. Received distribution.
  • the transmit beam may be implemented by configuring a transmit filter
  • the receive beam may be implemented by configuring a receive filter.
  • the filters described in the embodiments of the present application may include digital filters, analog filters, or digital-analog hybrid filters. , there is no specific limitation.
  • the SSB may include at least one of a primary synchronization signal (primary synchronisation signal, PSS), a secondary synchronization signal (secondary synchronisation signal, SSS), and a physical broadcast channel (physical broadcast channel, PBCH).
  • primary synchronisation signal primary synchronisation signal
  • secondary synchronization signal secondary synchronisation signal
  • PBCH physical broadcast channel
  • OFDM orthogonal frequency division multiplexing
  • PSS is located on the middle 127 sub-carriers of symbol 0
  • SSS is located on the middle 127 sub-carriers of symbol 2.
  • the guard sub-carriers are not used to carry signals, and sub-carriers are respectively reserved on both sides of the PSS and SSS as guard sub-carriers. As shown in Figure 3, the blank areas on both sides of the SSS are guard sub-carriers.
  • PBCH occupies all sub-carriers of symbol 1 and symbol 3, and occupies a part of the remaining sub-carriers in all sub-carriers of symbol 2 except the sub-carriers occupied by SSS (that is, the remaining sub-carriers except the guard sub-carriers) subcarriers other than the carrier).
  • the OFDM symbol is simply referred to as a symbol.
  • the access network device may configure at least one set of CG resource configurations (configuration) for the terminal device.
  • a set of CG resource configuration may include at least one of the following: (1) the duration of a CG period; (2) the number of repetitions in a CG period, or, in other words, the number of repetition opportunities included in a CG period, In other words, the number of CG resources (or repeated time-frequency resources) included in a CG cycle; (3) time-frequency location information of each CG resource in a CG cycle.
  • one CG cycle may include one or more CG resources.
  • Multiple CG resources included in a CG cycle may be used to repeatedly transmit the same data, and the redundancy versions of the data transmitted by the multiple CG resources may be the same or different.
  • Multiple CG resources included in one CG period may also be referred to as multiple repeated time-frequency resources. Any two different CG resources among the multiple CG resources in one CG period may be time-division and/or frequency-division, which is not limited.
  • a set of CG resource configurations may also include other possible information, such as one or more of the following parameters of the PUSCH: frequency hopping indication information (used to indicate frequency hopping within a time slot or between time slots), DMRS configuration information (used to indicate the type, location, length, and/or precoding of DMRS, etc.), modulation and coding scheme (modulation and coding scheme, MCS) table, resource allocation method (can be type 0 (type0), Type 1 (type1) or dynamic switching resource allocation method), power control indication information, hybrid automatic repeat request (HARQ) number of processes (for example, it can be one of 1 to 16) and repeated transmission.
  • the redundant version, etc. are not specifically limited.
  • the CG occasion may refer to one resource unit (resource represented by three dimensions of time, frequency, and DMRS).
  • One CG occasion corresponds to one DMRS resource and at least one CG resource in one CG period (also referred to as repetition time-frequency resource or repetition opportunity).
  • DMRS resources may include DMRS ports and/or DMRS sequences.
  • the CG timing can be used for the terminal device to send uplink information to the access network device in the disconnected state.
  • the CG timing can be used exclusively for the terminal device to send uplink information in the disconnected state; for another example, the CG opportunity can be used for the terminal device to send uplink information in the connected state, and can also be used for the terminal device to send uplink information in the disconnected state.
  • the uplink information may include uplink data and/or uplink signaling, and the uplink signaling may include at least one of the following: signaling at the physical layer, signaling at the media access control (MAC) layer, and signaling at the RRC layer . These uplink data and/or uplink signaling may be carried on the PUSCH specific to the terminal device.
  • one CG occasion corresponds to all CG resources in one CG cycle.
  • FIG. 4 a schematic diagram of CG timing distribution provided in an embodiment of the present application. Assuming that the number of DMRS resources configured by the access network equipment is 4, a CG cycle includes 8 CG resources, and a CG occasion corresponds to a DMRS resource and 8 CG resources in a CG cycle, then as shown in Figure 4, a CG A cycle may include 4 CG occasions, namely CG occasion 1 to CG occasion 4.
  • CG timing is displayed in two dimensions: DMRS resources and time domain.
  • a CG cycle includes 8 CG resources, and each CG timing corresponds to these 8 CG resources, but Corresponding to different DMRS resources, for the sake of clarity, the CG resources corresponding to different CG timings are shown separately, and the same is true for other schematic diagrams of CG timings that follow.
  • one CG occasion may correspond to some CG resources in one CG cycle.
  • FIG. 5( a ) a schematic diagram of CG timing distribution provided in an embodiment of the present application.
  • a CG cycle includes 8 CG resources
  • a CG occasion corresponds to a DMRS resource and 4 CG resources in a CG cycle
  • a CG cycle may include 8 CG occasions, which are CG occasion 1 to CG occasion 8 respectively.
  • CG occasion 1 and CG occasion 2 as an example, they correspond to the same DMRS resource respectively, but the corresponding CG resources are different.
  • the CG resources in a CG cycle can be equally divided into multiple CG opportunities, similar to that shown in Figure 5(a), each CG opportunity corresponds to 4 CG resources; one CG cycle The CG resources in the A CG resource corresponds to another CG timing.
  • the word "exemplary” is used to mean serving as an example, illustration or illustration. Any embodiment or design described in this application as "exemplary” should not be construed as preferred or advantageous over other embodiments or designs. Rather, the use of the word example is intended to present a concept in a concrete way.
  • the network architecture and service scenarios described in the embodiments of the present application are for the purpose of illustrating the technical solutions of the embodiments of the present application more clearly, and do not constitute a limitation on the technical solutions provided by the embodiments of the present application.
  • the evolution of new business scenarios and the emergence of new business scenarios, the technical solutions provided in the embodiments of the present application are also applicable to similar technical problems.
  • a link between the CG resource and the downlink reference signal is established.
  • the terminal device can determine the CG resource according to the downlink reference signal, and send the uplink data on the CG resource corresponding to the downlink reference signal.
  • the access network device can receive the uplink data on the CG resource by using the corresponding receiving beam, thereby improving the reception performance of the uplink data, which will be described in detail below.
  • FIG. 6 a schematic flowchart of a data transmission method provided by an embodiment of the present application is shown.
  • the interaction between the access network device and the terminal device is taken as an example for illustration.
  • the operations performed by the access network device can also be performed by a chip or module inside the access network device, and the operations performed by the terminal device can also be performed by the terminal.
  • a chip or module inside the device executes. Referring to Figure 6, the method includes:
  • the access network device sends first configuration information to the terminal device.
  • S602 the terminal device receives the first configuration information from the access network device.
  • the first configuration information is used to indicate the first set of CG resource configurations and the first correspondence; the first correspondence is X CG opportunities and N1 downlink reference signals in the first set of CG resource configurations The corresponding relationship of ; X, N1 are integers greater than 0.
  • the first configuration information is further used to indicate configuration information of the N1 downlink reference signals.
  • the first configuration information may indicate multiple sets of CG resource configurations.
  • the first set of CG resource configurations is indicated as an example for description, which does not mean that the first configuration information only indicates the first set of CG resource configurations.
  • the first set of CG resource configuration indicated by the first configuration information, the N1 downlink reference signals, and the first correspondence are respectively described in detail below.
  • the first set of CG resource configuration may include but not limited to one or more of the following information:
  • the duration of the CG cycle ; the number of CG resources (or repeated time-frequency resources) included in a CG cycle, such as 1, 2, 4, or 8, etc.; the time-frequency location information of each CG resource in a CG cycle, etc. information; frequency hopping indication information, used to indicate PUSCH frequency hopping within time slots or between time slots; configuration information of DMRS of PUSCH, used to indicate the type, location, length, port, sequence and/or precoding of DMRS, etc.
  • the MCS table of PUSCH indicating the modulation and coding scheme table used; the resource allocation mode of PUSCH, which can be a resource allocation mode of type 0 (type0), type 1 (type1) or dynamic switching; power control indication information of PUSCH; The number of HARQ processes, such as one of 1 to 16; the redundancy version used when the PUSCH is repeatedly transmitted; the effective time of the CG resource configuration; and, the CG PUSCH configuration information, including but not limited to time-frequency resources, antenna ports, uplink Precoding, number of layers, and/or MCS indication, etc., are not specifically limited.
  • the above-mentioned PUSCH is used to carry uplink data.
  • the channel used to carry the uplink data may also have other names, which are not limited in this application.
  • downlink reference signals include but are not limited to SSB, channel state information reference signal (CSI-RS), positioning reference signal (positioning reference signal, PRS), downlink demodulation reference signal (demodulation reference signal) reference signal, DMRS) or other possible downlink reference signals, which are not specifically limited.
  • CSI-RS channel state information reference signal
  • PRS positioning reference signal
  • demodulation reference signal demodulation reference signal
  • DMRS downlink demodulation reference signal
  • the downlink reference signal is an SSB as an example for description, and other situations are not repeated.
  • One transmission period of the reference signal may include multiple downlink reference signals, and the N1 downlink reference signals may be part or all of the downlink reference signals in one transmission period.
  • the downlink reference signal as an SSB as an example, one SSB burst set may include multiple SSBs, and the N1 downlink reference signals may be part or all of the SSBs in one SSB burst set.
  • an SSB burst set includes 4 SSBs, namely SSB1, SSB2, SSB3, and SSB4
  • N1 can be a positive integer less than or equal to 4
  • N1 downlink reference signals can include SSB1, SSB2, SSB3 , at least one of SSB4.
  • N1 can be a positive integer less than or equal to 8, that is, N1 downlink reference signals can include SSB1, At least one of SSB2, ..., SSB8.
  • the N1 downlink reference signals include downlink reference signals associated with the terminal device when it enters the inactive state.
  • the terminal device when it is in the RRC connection state, it can measure downlink reference signals (such as SSB, CSI-RS, etc.) and report the measurement result to the access network device.
  • the measurement result can include at least one of the following: reference signal received power (reference signal receiving power, RSRP), reference signal receiving quality (reference signal receiving quality, RSRQ), and signal to interference plus noise ratio (signal to interference plus noise ratio, SINR), which are not specifically limited.
  • the access network device may determine the downlink reference signal whose measurement result is greater than or equal to the preset threshold, or the downlink reference signal with the best measurement result, as the downlink reference associated with the terminal device when it enters the inactive state or before entering the inactive state. Signal.
  • the terminal device may also report the downlink reference signal whose measurement result is greater than or equal to the preset threshold, or the downlink reference signal with the best measurement result to the access network device.
  • the first configuration information may include first indication information, where the first indication information is used to indicate information of N1 downlink reference signals.
  • the first indication information indicates the indices of N1 downlink reference signals; for example, a reference signal transmission period includes 8 downlink reference signals, and the corresponding indices are 1 to 8 respectively. Assuming that N1 is equal to 4, N1 downlink reference signals are The indices of the reference signals are respectively 2 to 5, then the indices included in the first indication information are 2, 3, 4 and 5.
  • the first indication information indicates at least one of N1 and an index of a target downlink reference signal
  • the target downlink reference signal is a downlink reference signal at a specified position among the N1 downlink reference signals.
  • the N1 downlink reference signals may be determined according to the preset extension sequence and the index of the target downlink reference signal.
  • the first indication information may also indicate whether the index of the downlink reference signal is cyclic. If the first indication information indicates that the index is cyclic, the index after the maximum index is 0, for example, if the maximum index is 63, then the index after 63 is 0.
  • a reference signal transmission cycle includes 64 downlink reference signals, the corresponding indices are 0-63 respectively, and the value of N1 is 4 as an example.
  • Example 1 as shown in FIG. 7 , a schematic diagram of the location of a downlink reference signal provided by an embodiment of the present application.
  • the index of the target downlink reference signal is 0, and the target downlink reference signal is the downlink reference signal at the starting position of the four downlink reference signals. If the preset extension sequence is from left to right or from small to large, then the first indication information indicates The indices of the four downlink reference signals are 0, 1, 2 and 3 respectively.
  • the indices of the N1 downlink reference signals indicated by the first indication information are 0, 63, and 62, respectively. and 61.
  • Example 2 as shown in FIG. 7 , the index of the target downlink reference signal is 21, and the target downlink reference signal is the downlink reference signal in the middle of the four downlink reference signals. is small, then the indices of the four downlink reference signals indicated by the first indication information are 21, 22, 20, and 23, respectively.
  • the indices of the four downlink reference signals indicated by the first indication information are 21, 20, 22, and 19, respectively.
  • the index of the target downlink reference signal is 62
  • the target downlink reference signal is the downlink reference signal at the starting position of four downlink reference signals. If the first indication information indicates that the index is cyclic, preset The extension sequence is from left to right or from small to large (circular), then the indices of the four downlink reference signals indicated by the first indication information are 62, 63, 0, and 1, respectively.
  • the index of the target downlink reference signal may be agreed in the protocol and configured by the access network device, or may be reported by the terminal device to the access network device, which is not limited in this embodiment of the present application.
  • the rules for specifying the location, extension sequence, and whether to circulate may be indicated in the first information, or agreed in the protocol, or indicated by other messages such as system messages.
  • the agreement in the protocol can also be described as predefined in the protocol.
  • the first correspondence is the correspondence between the X CG occasions and the N1 downlink reference signals in the first set of CG resource configuration.
  • X CG opportunities are located in T1 CG cycles
  • T1 is an integer greater than 0
  • one CG cycle includes X/T1 CG opportunities.
  • the T1 CG cycles may be referred to as CG small data transmission (SDT) cycles or special CG SDT cycles, or the like.
  • the first set of CG resource configuration includes multiple CG SDT periods or special CG SDT periods, and each CG SDT period or special CG SDT period may have a first relationship with N1 downlink reference signals.
  • X CG occasions may be numbered according to a preset rule, and each CG occasion corresponds to a number.
  • the preset rule may refer to the index of DMRS resources corresponding to the CG timing from high to low (or from low to high), the index of time domain resources from low to high (or from high to low), and/or frequency domain resources
  • the indices of CG are numbered in low-to-high (or high-to-low) order.
  • the CG occasions in each CG cycle are numbered independently, that is to say, the numbers of the CG occasions in different CG cycles may overlap with each other.
  • FIG. 8 a schematic diagram of a numbering provided in an embodiment of the present application.
  • each CG cycle includes 4 CG resources as an example, one CG occasion corresponds to 4 CG resources in one CG cycle.
  • the numbers of CG occasions in each CG cycle are 1, 2, 3 and 4 in sequence, wherein, for the first CG cycle, the CG occasion numbered 1 corresponds to 4 CG resources and one DMRS resource, and the CG occasion numbered 1 corresponds to 4 CG resources and one DMRS resource, and the CG occasion numbered 1 corresponds to The timing corresponds to four CG resources and one DMRS resource, and other situations will not be repeated.
  • the CG occasions in the T1 CG cycles are numbered uniformly, that is, the numbers of the CG occasions in different CG cycles may not be repeated.
  • FIG. 9 a schematic diagram of a numbering provided in an embodiment of the present application.
  • the CG opportunities in the first CG cycle are numbered 1 and 2; the CG opportunities in the second CG cycle are numbered 3 and 4, and the CG opportunities in the third CG cycle are numbered 5 and 6. ;
  • CG occasions in the 4th CG cycle are numbered 7 and 8, respectively.
  • the CG occasion numbered 1 corresponds to four CG resources and one DMRS resource
  • the CG occasion numbered 2 corresponds to four CG resources and one DMRS resource, and other situations are not repeated.
  • one CG occasion corresponds to one or more downlink reference signals among the N1 downlink reference signals, or one downlink reference signal corresponds to one or more CG occasions, which are discussed below in different cases.
  • Each CG cycle in T1 CG cycles corresponds to N1 downlink reference signals, and each downlink reference signal corresponds to the same number of CG opportunities, that is, one downlink reference signal corresponds to (X/T1)/ N1 CG timings.
  • the parameter may be specified in the protocol, or notified by the access network device to the terminal device through signaling, which is not limited.
  • the configuration methods of different parameters can be the same or different, without limitation.
  • the number of downlink reference signals corresponding to one CG occasion may be referred to as a mapping ratio.
  • each CG cycle includes CG occasion 1 and CG Opportunity 2
  • each CG cycle corresponds to the two downlink reference signals
  • CG opportunity 1 in each CG cycle may correspond to SSB1
  • CG opportunity 2 in each CG cycle may correspond to SSB2.
  • Each of the T1 CG periods corresponds to N1 downlink reference signals, and different downlink reference signals may correspond to different numbers of CG opportunities.
  • Method 1 Configure CG periods or CG occasions corresponding to each downlink reference signal, wherein at least two downlink reference signals have different numbers of CG periods or CG occasions corresponding to them;
  • At least one downlink reference signal in the N1 downlink reference signals to correspond to a first number of CG opportunities in the X CG opportunities, and each downlink reference signal in the at least one downlink reference signal corresponds to a different number of CG opportunities;
  • N1 Downlink reference signals other than the at least one downlink reference signal among the number of downlink reference signals correspond to CG opportunities other than the first number of CG opportunities in the X number of CG opportunities, and each downlink reference signal corresponds to the same number of CGs opportunity.
  • the CG occasions in each CG cycle are numbered independently, that is, the number of the CG occasions included in each CG cycle All are CG timing 1 to CG timing 4.
  • CG timing 1 to CG timing 3 in each CG cycle can be configured to correspond to SSB1, and CG timing 4 in each CG cycle to correspond to SSB2.
  • Method 2 The ratio of the CG periods or the number of CG occasions corresponding to each of the N1 downlink reference signals is a preset ratio, and the ratio of the CG periods or the number of CG occasions corresponding to at least two downlink reference signals is not equal to 1.
  • the ratio of the number of CG occasions corresponding to SSB1 and SSB2 is 1:3.
  • CG timing 2 to CG timing 4 in the CG cycle correspond to SSB2.
  • T1 CG periods correspond to N1 downlink reference signals, and each downlink reference signal corresponds to the same number of CG occasions, that is, one CG occasion corresponds to N1/X downlink reference signals.
  • the access network device only needs to configure any three of the four parameters P, M, T1, and N1, and then the remaining one parameter can be calculated.
  • the parameter may be specified in the protocol, or notified by the access network device to the terminal device through signaling, which is not limited.
  • the configuration methods of different parameters can be the same or different, without limitation.
  • T1 CG periods correspond to N1 downlink reference signals, and different downlink reference signals may correspond to different numbers of CG occasions.
  • the number of CG periods or CG occasions corresponding to different downlink reference signals may be configured, wherein at least two downlink reference signals correspond to different numbers of CG periods or CG occasions; or the CG periods corresponding to different downlink reference signals may be configured. Or the ratio of the number of CG occasions, wherein the ratio of the CG periods or the number of CG occasions corresponding to at least two downlink reference signals is not equal to 1.
  • the access network device may be configured with multiple correspondences, for example, the access network device sends second configuration information, and the second configuration information is used to indicate N2 downlink reference signals and the second correspondence; the second correspondence is the correspondence between the Y CG occasions and the N2 downlink reference signals in the first set of CG resource configuration.
  • Y CG opportunities are located in T2 CG cycles. Y and T2 are integers greater than 0.
  • a CG cycle includes Y/T2 CG opportunities. In the first set of CG resource allocation, Y CG opportunities in every T2 cycle can be used.
  • the first configuration information and the second configuration information may be sent through the same message, or may be sent through different messages, which are not limited in this embodiment of the present application.
  • N2 may be larger than N1 or smaller than N1, and the N2 downlink reference signals and the N1 downlink reference signals may have the same downlink reference signal, or may not have the same downlink reference signal.
  • the ratio between T1 CG periods including X CG opportunities and T2 CG periods including Y CG opportunities is not limited, for example, it may be 1:1, for example, as shown in FIG. 12 , T1 CG periods include 1 CG period, T2 CG periods include 2 CG periods, and T1 CG periods and T2 CG periods are staggered.
  • the ratio between the T1 CG periods and the T2 CG periods in the first set of CG resource configuration may also be in other cases, which will not be exemplified one by one here.
  • each of the T2 CG periods includes 4 CG occasions
  • each of the T1 CG periods includes 2 CG occasions.
  • S603 The access network device sends N1 downlink reference signals to the terminal device.
  • the number of downlink reference signals sent by the access network equipment in one downlink reference signal transmission cycle is greater than or equal to N1.
  • one downlink reference signal may correspond to one transmit beam.
  • SSB1 corresponds to transmit beam 1
  • SSB2 corresponds to transmit beam 2
  • SSB3 corresponds to transmit beam 3
  • SSB4 corresponds to transmit beam 4, wherein the correspondence between the downlink reference signal and the transmit beam may be an access network device preconfigured. The corresponding relationship may or may not be notified to the terminal device.
  • S604 The terminal device receives N1 downlink reference signals from the access network device, and determines the first downlink reference signal from the N1 downlink reference signals, and determines the first downlink reference signal through the first corresponding relationship with the first downlink reference signal.
  • the uplink data is sent at the corresponding CG occasion.
  • the terminal device may be in a disconnected state at this time, for example, the terminal device is in an RRC inactive state.
  • the terminal equipment can obtain the measured values of the N1 downlink reference signals by measuring the N1 downlink reference signals.
  • the measurement value of each downlink reference signal may include at least one of the following: RSRP, RSRQ, and SINR.
  • the terminal device may select the first downlink reference signal from the N1 downlink reference signals according to the measured values of the N1 downlink reference signals in various manners. For example, the terminal device determines, according to the measurement values of the N1 downlink reference signals, one or more downlink reference signals (such as downlink reference signal 1 and downlink reference signal 2) whose measurement value is greater than or equal to the first threshold among the N1 downlink reference signals. , and then select one of the downlink reference signals (such as downlink reference signal 1) as the first downlink reference signal from these downlink reference signals; wherein, the first threshold can be set according to actual needs, and can be configured for the access network equipment, It can also be set independently for the terminal device, which is not specifically limited.
  • one or more downlink reference signals such as downlink reference signal 1 and downlink reference signal 2 whose measurement value is greater than or equal to the first threshold among the N1 downlink reference signals.
  • the first threshold can be set according to actual needs, and can be configured for the access network equipment, It can also be set independently for the terminal
  • uplink data may also be sent through CG occasions corresponding to the multiple downlink reference signals.
  • CG occasions there are two downlink reference signals, namely SSB1 and SSB2, wherein CG occasion 1 corresponds to SSB1, and CG occasion 2 corresponds to SSB2.
  • the terminal device determines that the measured values of SSB1 and SSB2 are both higher than the first threshold, it can send uplink data through CG occasion 1 and CG occasion 2.
  • the terminal device selects the downlink reference signal with the largest measured value from the N1 downlink reference signals as the first downlink reference signal.
  • the measured values of the N1 downlink reference signals are all smaller than the first threshold, or the measured value of at least one of the N1 downlink reference signals is greater than or equal to the first threshold.
  • the first downlink reference signal corresponds to multiple CG occasions
  • one CG occasion may be selected from the multiple CG occasions to send the uplink data, or at least two CG occasions may be selected to send the uplink data. limited.
  • the terminal device when it sends uplink data through the CG opportunity, it can use some or all of the CG resources in the CG opportunity to send the uplink data.
  • a CG occasion includes 8 CG resources, and the terminal device can only use 4 of the CG resources to send the uplink data. data.
  • the number of CG resources used by the terminal device and which number of CG resources to use may be specified in the protocol, or determined by the terminal device independently, or determined in other manners, which are not limited in this embodiment of the present application.
  • the terminal device may also send a measurement result through a CG opportunity corresponding to the first downlink reference signal, where the measurement result includes the measurement values of N1 downlink reference signals, or the measurement result includes the first downlink reference signal. measured value.
  • the access network device receives the uplink data from the terminal device.
  • the access network device may receive the uplink data of the terminal device by using the corresponding receiving beam in the CG occasions corresponding to the N1 downlink reference signals. For example, if the terminal device obtains that the measured value of SSB1 is the highest or higher, it may use transmit beam 1 corresponding to SSB1 to transmit uplink data at CG occasion 1 corresponding to SSB1. Correspondingly, the access network device can use the corresponding beam to try to receive at the configured CG occasion. For example, the access network device can use the receive beam 1 associated with the transmit beam 1 to try to receive at the CG opportunity 1, so that it can receive the uplink data sent by the terminal device. Among them, since the receiving beam 1 and the transmitting beam 1 have a high degree of correlation, the receiving performance of the access network device can be effectively improved.
  • the access network device can configure X CG occasions corresponding to N1 downlink reference signals for the terminal device, when the terminal device sends uplink data on the CG occasion corresponding to a certain downlink reference signal, the access network device Corresponding receiving beams can be used to receive uplink data at the CG occasion, thereby effectively improving the receiving performance of the access network equipment.
  • the N1 downlink reference signals may only be part of the downlink reference signals in one transmission cycle, the complexity of configuration can be reduced, and the signaling overhead of configuration can be reduced.
  • the first correspondence may also be updated.
  • the terminal device sends a request message to the access network device, and the request message may be used to request to update the first correspondence.
  • the access network device may send reconfiguration information to the terminal device, where the reconfiguration information is used to update the first correspondence.
  • the reconfiguration information may be carried in a DCI, a MAC control element (control element CE), or an RRC message, which is not specifically limited.
  • the access network device may also actively send the reconfiguration information. In this case, the terminal device does not need to send a request message to the access network device.
  • one downlink reference signal transmission period includes downlink reference signal 1 and downlink reference signal 2, and also includes other possible downlink reference signals.
  • the terminal device determines that the measured value of the downlink reference signal 2 is greater than the measured value of other downlink reference signals in the downlink reference signal transmission period (that is, the measured value of the downlink reference signal 2 is the largest), if it determines that at least one of the following situations 1 and 2 is met: If it is selected, a request message can be sent to the access network device.
  • case 1 the downlink reference signal 2 has no corresponding CG resource, that is, the downlink reference signal 2 does not belong to the N1 downlink reference signals.
  • Scenario 2 The number of CG resources corresponding to downlink reference signal 2 is small, for example, the number of CG resources corresponding to downlink reference signal 2 is less than the number of CG resources corresponding to other reference signals in the N1 downlink reference signals.
  • the access network device can send reconfiguration information to the terminal device to update the first correspondence, when the terminal device moves in the disconnected state, it can flexibly adjust the correspondence between the CG timing and the downlink reference signal in a timely manner relationship, so that after selecting the current downlink reference signal, the terminal device can have more CG opportunities to send uplink data, so as to ensure the data transmission of the terminal device in the disconnected state.
  • Embodiment 2 is a diagrammatic representation of Embodiment 1:
  • Multiple HARQ processes may be used for data transmission between the terminal device and the access network device to support parallel transmission of multiple data packets.
  • a HARQ process can include the entire process from the initial transmission to the final acknowledgement (ACK) (that is, receiving the information that the receiver confirms the correct reception of the data packet), or the entire process from the initial transmission to exceeding the maximum number of retransmissions .
  • the two processes may include processes such as receiving a negative acknowledgement (negative acknowledgement, NACK), sending a retransmission, and the like.
  • This whole process can be marked with a HARQ process ID, so that since the HARQ process IDs of the initial transmission and the retransmission are the same, the relationship between the initially transmitted data packet and the retransmitted data packet can be established, which is convenient for the receiver to receive correctly.
  • multiple HARQ processes are used between the terminal device and the access network device, it means that there can be multiple such processes in parallel, that is, when the process of one HARQ process is not over, the transmission process of other HARQ processes can be performed simultaneously.
  • the access network device may use downlink control information (DCI) to schedule a PUSCH/PDSCH, and the DCI may include a field for indicating a HARQ process number. For example, 4 bits may be used to indicate the HARQ process ID (the HARQ process ID ranges from 0 to 15), marking the HARQ process ID of the data packet transmitted on the PUSCH/PDSCH.
  • DCI downlink control information
  • the embodiments of the present application provide at least three The method for determining the HARQ process number is described below by taking T1 CG cycles including X CG occasions as an example, and descriptions are given separately, and other situations will not be repeated.
  • Method 1 In T1 CG cycles, the HARQ process numbers of all CG occasions are the same, that is, X CG occasions correspond to the same HARQ process number.
  • the HARQ process numbers corresponding to all CG occasions are based on the starting time position of the PUSCH included in the i-th CG cycle in T1 CG cycles ( For example, the starting symbol or the first symbol) is determined, and i is an integer greater than or equal to 1 and less than or equal to T1.
  • the terminal device and the access network device can determine the HARQ process number by the following formula:
  • HARQ Process ID [floor(CURRENT_symbol/periodicity)]modulo nrofHARQ-Processes+harq-ProcID-Offset2;
  • HARQ Process ID represents the HARQ process ID
  • CURRENT_symbol represents the start symbol of PUSCH
  • CURRENT_symbol (SFN ⁇ numberOfSlotsPerFrame ⁇ numberOfSymbolsPerSlot+slot number in the frame ⁇ numberOfSymbolsPerSlot+symbol number in the slot).
  • CURRENT_symbol specifically indicates which CG cycle includes the start symbol of the PUSCH determined by the parameter SFN, the parameter slot number in the frame, and the parameter symbol number in the slot.
  • the value of the parameter SFN is the frame number of the system frame where the start symbol of the CG opportunity included in the i-th CG cycle is located, and the parameter slot number in the frame
  • the value is the time slot number in the system frame where the start symbol of the CG opportunity included in the ith CG cycle is located, and the value of the parameter symbol number in the slot is the start of the CG opportunity included in the ith CG cycle.
  • the symbol number of the start symbol in the slot is the symbol number of the start symbol in the slot.
  • the number of downlink reference signals corresponding to each CG occasion may be greater than 1.
  • one HARQ process number can correspond to multiple CG opportunities, when the terminal device needs to use the HARQ process number, it can use any one of the X CG opportunities according to the corresponding downlink reference signal.
  • each CG cycle corresponds to an independent HARQ process number, and the HARQ process numbers corresponding to different CG cycles are likely to be different, that is, among X CG opportunities, the CG opportunities in the same CG cycle correspond to the same HARQ process ID.
  • the X CG occasions are located in T1 CG cycles, and for any CG cycle in T1 CG cycles, the CG cycle included in the CG cycle
  • the HARQ process number corresponding to the CG occasion is determined according to the start time position of the PUSCH in the CG period (eg, the start symbol or the first symbol).
  • the terminal device and the access network device can determine the HARQ process number by the following formula:
  • HARQ Process ID [floor(CURRENT_symbol/periodicity)]modulo nrofHARQ-Processes+harq-ProcID-Offset2;
  • HARQ Process ID represents the HARQ process ID
  • CURRENT_symbol represents the start symbol of PUSCH
  • CURRENT_symbol (SFN ⁇ numberOfSlotsPerFrame ⁇ numberOfSymbolsPerSlot+slot number in the frame ⁇ numberOfSymbolsPerSlot+symbol number in the slot).
  • the value of the parameter SFN is the frame number of the system frame where the start symbol of the CG opportunity included in the CG cycle is located, and the value of the parameter slot number in the frame is the time when the start symbol of the CG opportunity included in the CG cycle is located.
  • the value of the parameter symbol number in the slot is the symbol number in the time slot of the start symbol of the CG opportunity included in the CG cycle.
  • each CG occasion included in the CG period corresponds to a downlink reference signal.
  • X CG occasions correspond to multiple HARQ process numbers
  • the CG occasion corresponding to the downlink reference signal selected by the terminal device can correspond to multiple HARQ process numbers.
  • each CG cycle corresponds to multiple HARQ process IDs, and the HARQ process IDs corresponding to different CG timings in a CG cycle are set independently (with different high probability), that is, among X CG timings, different CG timings Corresponds to the respective HARQ process ID.
  • the X CG occasions are located in T1 CG periods, and for any CG period in T1 CG periods, any one of the CG periods
  • the HARQ process ID corresponding to the CG occasion is determined according to the start time position of the PUSCH in the CG cycle (eg, the start symbol or the first symbol) and the DMRS resources included in the CG occasion.
  • the terminal device and the access network device can determine the HARQ process number by the following formula:
  • HARQ Process ID ⁇ [floor(CURRENT_symbol/periodicity)]+f(DMRS-Index) ⁇ modulo nrofHARQ-Processes+harq-ProcID-Offset2;
  • HARQ Process ID represents the HARQ process ID
  • CURRENT_symbol represents the start symbol of PUSCH
  • CURRENT_symbol (SFN ⁇ numberOfSlotsPerFrame ⁇ numberOfSymbolsPerSlot+slot number in the frame ⁇ numberOfSymbolsPerSlot+symbol number in the slot); wherein, the value of the parameter SFN is the system frame frame number where the start symbol of the CG occasion included in the CG cycle is located, The value of the parameter slot number in the frame is the time slot number in the system frame where the start symbol of the CG opportunity included in the CG cycle is located, and the value of the parameter symbol number in the slot is the value of the CG included in the CG cycle The symbol number in the slot of the starting symbol of the opportunity.
  • DMRS-Index is the DMRS index of the DMRS resource included in the CG occasion
  • the CG occasions included in the CG cycle correspond to multiple downlink reference signals.
  • each CG opportunity corresponds to at least one HARQ process number
  • each CG cycle corresponds to multiple HARQ process numbers, which can improve the flexibility of the terminal device to select the HARQ process number, and avoid being unable to obtain the required HARQ process number when transmission is required.
  • the HARQ process improves the flexibility of data transmission.
  • first embodiment and the second embodiment described above may be implemented independently, or may be implemented in combination with each other.
  • step numbers of the flowcharts described in Embodiment 1 and Embodiment 2 are only an example of the execution process, and do not constitute a restriction on the sequence of execution of the steps, and there is no sequence in the embodiments of the present application. There is no strict order of execution between the steps of a dependency. In addition, not all the steps shown in each flowchart are steps that must be executed, and some steps may be added or deleted on the basis of each flowchart according to actual needs.
  • the access network device or the terminal device may include a hardware structure and/or a software module, and implement the above in the form of a hardware structure, a software module, or a hardware structure plus a software module. each function. Whether one of the above functions is performed in the form of a hardware structure, a software module, or a hardware structure plus a software module depends on the specific application and design constraints of the technical solution.
  • each functional module in each embodiment of the present application may be integrated into one processor, or may exist physically alone, or two or more modules may be integrated into one module.
  • the above-mentioned integrated modules can be implemented in the form of hardware, and can also be implemented in the form of software function modules.
  • an embodiment of the present application further provides an apparatus 1400 for implementing the functions of the access network device or the terminal device in the above method.
  • the apparatus may be a software module or a system-on-chip.
  • the chip system may be composed of chips, or may include chips and other discrete devices.
  • the apparatus 1400 may include: a processing unit 1401 and a communication unit 1402 .
  • the communication unit may also be referred to as a transceiver unit, and may include a sending unit and/or a receiving unit, respectively configured to perform the sending and receiving steps of the access network device or the terminal device in the above method embodiments.
  • a communication unit may also be referred to as a transceiver, transceiver, transceiver, or the like.
  • the processing unit may also be referred to as a processor, a processing single board, a processing module, a processing device, and the like.
  • the device for implementing the receiving function in the communication unit 1402 may be regarded as a receiving unit, and the device for implementing the sending function in the communication unit 1402 may be regarded as a transmitting unit, that is, the communication unit 1402 includes a receiving unit and a transmitting unit.
  • a communication unit may also sometimes be referred to as a transceiver, transceiver, or transceiver circuit, or the like.
  • the receiving unit may also sometimes be referred to as a receiver, receiver, or receiving circuit, or the like.
  • the transmitting unit may also sometimes be referred to as a transmitter, a transmitter, or a transmitting circuit, or the like.
  • a communication unit configured to receive first configuration information, where the first configuration information is used to indicate a first set of configuration authorization CG resource configurations and a first corresponding relationship; the first corresponding relationship is one of the first set of CG resource configurations
  • the correspondence between the X CG occasions and the N1 downlink reference signals; X and N1 are integers greater than 0;
  • a processing unit configured to receive the N1 downlink reference signals, and determine a first downlink reference signal from the N1 downlink reference signals, wherein the first correspondence is related to the first downlink reference signal
  • the corresponding CG occasion is used to send the uplink data of the terminal device when the terminal device is in the disconnected state.
  • a communication unit configured to send first configuration information, where the first configuration information is used to indicate a first set of configuration authorization CG resource configuration, N1 downlink reference signals and a first correspondence; the first correspondence is the first correspondence The correspondence between X CG occasions in a set of CG resource configuration and the N1 downlink reference signals; X and N1 are integers greater than 0;
  • a processing unit for generating N1 downlink reference signals
  • a communication unit configured to send the N1 downlink reference signals and receive uplink data of the terminal device
  • the CG timing that carries the uplink data is the CG timing corresponding to the first downlink reference signal in the first correspondence, and the first downlink reference signal is determined from the N1 downlink reference signals .
  • processing unit 1401 and the communication unit 1402 may also perform other functions.
  • processing unit 1401 and the communication unit 1402 may also perform other functions.
  • the processing unit 1401 and the communication unit 1402 may also perform other functions.
  • FIG. 15 shows an apparatus 1500 provided in this embodiment of the present application.
  • the apparatus shown in FIG. 15 may be a hardware circuit implementation of the apparatus shown in FIG. 14 .
  • the communication apparatus can be applied to the flow chart shown above, and executes the functions of the terminal device or the access network device in the foregoing method embodiments.
  • FIG. 15 only shows the main components of the communication device.
  • the communication device 1500 includes a processor 1510 and an interface circuit 1520 .
  • the processor 1510 and the interface circuit 1520 are coupled to each other.
  • the interface circuit 1520 can be a transceiver, a pin, an interface circuit or an input and output interface.
  • the communication device 1500 may further include a memory 1530 for storing instructions executed by the processor 1510 or input data required by the processor 1510 to execute the instructions or data generated after the processor 1510 executes the instructions.
  • the processor 1510 is used to implement the function of the above-mentioned processing unit 1401
  • the interface circuit 1520 is used to implement the function of the above-mentioned communication unit 1402 .
  • the terminal device chip When the above communication device is a chip applied to a terminal device, the terminal device chip implements the functions of the terminal device in the above method embodiments.
  • the terminal device chip receives information from other modules (such as radio frequency modules or antennas) in the terminal device, and the information is sent by the access network device to the terminal device; or, the terminal device chip sends information to other modules (such as radio frequency) in the terminal device. module or antenna) to send information, the information is sent by the terminal equipment to the access network equipment.
  • modules such as radio frequency modules or antennas
  • the access network device chip When the above communication device is a chip applied to an access network device, the access network device chip implements the functions of the access network device in the above method embodiments.
  • the access network device chip receives information from other modules (such as radio frequency modules or antennas) in the access network device, and the information is sent by the terminal device to the access network device; or, the access network device chip sends information to the access network device.
  • Other modules in the device such as radio frequency modules or antennas
  • send information which is sent by the access network device to the terminal device.
  • processors in the embodiments of the present application may be a central processing unit, and may also be other general-purpose processors, digital signal processors, application-specific integrated circuits, or other programmable logic devices, transistor logic devices, hardware components or any combination thereof.
  • a general-purpose processor may be a microprocessor or any conventional processor.
  • the memory may be random access memory, flash memory, read-only memory, programmable read-only memory, erasable programmable read-only memory, electrically erasable programmable read-only memory, registers, hard disks, mobile hard disk or any other form of storage medium known in the art.
  • the embodiments of the present application may be provided as a method, a system, or a computer program product. Accordingly, the present application may take the form of an entirely hardware embodiment, an entirely software embodiment, or an embodiment combining software and hardware aspects. Furthermore, the present application may take the form of a computer program product embodied on one or more computer-usable storage media (including, but not limited to, disk storage, optical storage, etc.) having computer-usable program code embodied therein.
  • These computer program instructions may also be stored in a computer-readable memory capable of directing a computer or other programmable data processing apparatus to function in a particular manner, such that the instructions stored in the computer-readable memory result in an article of manufacture comprising instruction means, the instructions
  • the apparatus implements the functions specified in the flow or flow of the flowcharts and/or the block or blocks of the block diagrams.

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Abstract

本申请提供一种数据传输方法及装置，方法包括：终端设备从接入网设备接收第一配置信息，第一配置信息指示第一套CG资源配置以及第一对应关系；第一对应关系为第一套CG资源配置中的X个CG时机与N1个下行参考信号的对应关系；终端设备从接入网设备接收N1个下行参考信号，并从N1个下行参考信号中确定第一下行参考信号，第一对应关系中与第一下行参考信号对应的CG时机用于发送上行数据。通过为终端设备配置CG时机与下行参考信号的对应关系，当终端设备在下行参考信号对应的CG时机上发送上行数据时，可以采用该参考信号对应的接收波束在该CG时机上接收上行数据，从而能够有效提高在免授权的资源接收上行数据的接收性能。

Description

一种数据传输方法及装置
相关申请的交叉引用
本申请要求在2021年03月09日提交中国国家知识产权局、申请号为202110256217.9、申请名称为“一种数据传输方法及装置”的中国专利申请的优先权，其全部内容通过引用结合在本申请中。
技术领域
本申请涉及通信技术领域，尤其涉及一种数据传输方法及装置。
背景技术
在现有的通信系统中，例如第五代(the 5th generation，5G)通信系统中，终端设备与基站建立了无线资源控制(radio resource control，RRC)连接后，该终端设备的RRC状态为RRC连接(RRC connected)态。处于RRC连接态的终端设备可以转换到RRC空闲(RRC idle)态或者RRC非激活(RRC inactive)态。
处于RRC非激活态的终端设备可以基于免授权的资源进行上行数据传输，例如进行上行小包数据传输。该方式中，基站预配置用于上行数据传输的物理上行共享信道(physical uplink shared channel，PUSCH)资源以及传输参数。当终端设备有上行数据发送时，可以直接使用预配置的PUSCH资源和PUSCH传输参数向基站发送数据，不必接收基站的动态上行授权(dynamic uplink grant)，也不必通过随机接入过程与基站建立连接。通过该方式，可以减少信令开销，降低终端设备的功耗。
终端设备处于RRC非激活态时，如何提高上行数据传输的效率，是值得研究的技术问题。
发明内容
本申请提供一种数据传输方法及装置，用以降低接收在免授权的资源上发送的上行数据的复杂度。
第一方面，本申请实施例提供一种通信方法，该方法用于实现终端设备侧的功能，例如该方法可以应用于终端设备或者终端设备中的芯片，本申请实施例不限该方法的具体的执行主体。可选的，该方法可以由终端设备侧的多个功能模块共同实现，各功能模块执行的方法也在本申请的保护范围。以该方法应用于终端设备为例，在该方法中，终端设备接收来自接入网设备的第一配置信息，第一配置信息用于指示第一套配置授权CG资源配置以及第一对应关系；第一对应关系为第一套CG资源配置中的X个CG时机与N1个下行参考信号的对应关系；X、N1为大于0的整数；终端设备接收N1个下行参考信号，并从N1个下行参考信号中确定第一下行参考信号，其中，第一对应关系中与第一下行参考信号对应的CG时机用于当终端设备在非连接态时承载终端设备的上行数据。通过实施上述方法，接入网设备通过为终端设备配置CG时机与下行参考信号的对应关系，当终端设备在某个下行参考信号对应的CG时机上发送上行数据(比如小包数据)时，接入网设备可以 采用相应的该参考信号对应的接收波束在该CG时机上接收上行数据，从而能够有效提高接入网设备在免授权的资源接收上行数据的接收性能。
在一种可能的设计中，N1个下行参考信号为一个参考信号的发送周期中的部分下行参考信号。
通过实施上述方法，可以避免为发送周期中的所有下行参考信号都配置CG时机，从而降低配置信令开销的同时，提高接入网设备的数据接收性能。
在一种可能的设计中，X个CG时机位于T1个CG周期，一个CG周期包括X/T1个CG时机，一个CG时机对应N1个下行参考信号中的一个或多个下行参考信号，T1为大于0的整数。
在一种可能的设计中，T1个CG周期中的每个CG周期对应N1个下行参考信号，其中一个CG时机对应N1/(X/T1)个下行参考信号；或者，T1个CG周期中的每个CG周期对应N1/T1个下行参考信号，其中一个CG时机对应N1/X个下行参考信号。
通过实施上述方法，每个CG时机对应的下行参考信号的数量相同，可以降低配置第一对应关系的复杂度。
在一种可能的设计中，N1个下行参考信号中的至少一个下行参考信号与X个CG时机中第一数量的CG时机对应，且至少一个下行参考信号中的每个下行参考信号对应不同数量的CG时机；N1个下行参考信号中除至少一个下行参考信号之外的下行参考信号，与X个CG时机中除第一数量的CG时机之外的CG时机对应，且每个下行参考信号对应相同数量的CG时机。
通过实施上述方法，不同CG时机对应的下行参考信号的数量可以不同，使得对应关系较为灵活，进而终端设备在选择CG时机时也具有较高的灵活性，便于非连接态下的数据传输。
在一种可能的设计中，N1个下行参考信号中各个下行参考信号对应的CG时机数量的比值为预设比值。
在一种可能的设计中，CG时机对应至少一个重复时频资源以及一个解调参考信号DMRS资源，至少一个重复时频资源位于同一个CG周期内。
在一种可能的设计中，X个CG时机对应的HARQ进程号相同，X个CG时机对应的HARQ进程号是根据T1个CG周期中第i个CG周期包括的物理上行共享信道PUSCH的起始时间位置确定的，i为大于等于1且小于等于T1的整数；或者，一个CG周期中包括的CG时机对应的混合自动重传请求HARQ进程号是根据一个CG周期中物理上行共享信道PUSCH的起始时间位置确定的；或者，一个CG周期中包括的第一CG时机对应的HARQ进程号是根据一个CG周期中PUSCH的起始时间位置以及第一CG时机包括的DMRS资源确定的；第一CG时机为一个CG周期中任一CG时机。
通过实施上述方法，当X个CG时机对应相同的HARQ进程号时，可以实现一个HARQ进程号可以对应多个CG时机，使得有限数量的HARQ进程号可以尽可能多的与CG时机对应，而且可以降低HARQ进程号分配的复杂度。
当一个CG周期对应一个HARQ进程号，X个CG时机可以对应多个HARQ进程号，终端设备选择的下行参考信号对应的CG时机位于不同CG周期时，可以对应多个HARQ进程号，如果终端设备需要选用特定的HARQ进程号，从而有较大机会获得需要的HARQ进程，该方法可以提高每个CG周期中CG机会被使用的概率，从而提高数据传输的灵活性。
当X个CG时机中每个CG时机对应至少一个HARQ进程号时，终端设备在进行数据传输 时，选择的下行参考信号对应的每个CG时机可以对应多个HARQ进程号，可以提高终端设备选择HARQ进程号的灵活性，避免在需要传输时，无法获得需要的HARQ进程，该方法可以提高每个CG机会被使用的概率，从而提高数据传输的灵活性。
在一种可能的设计中，第一配置信息包括第一指示信息，第一指示信息用于指示N1个下行参考信号的信息。
在一种可能的设计中，第一指示信息指示N1个下行参考信号的索引；或者，第一指示信息指示N1以及目标下行参考信号的索引中的至少一项，目标下行参考信号为N1个下行参考信号中指定位置的下行参考信号。
通过实施上述方法，可以灵活指示N1个下行参考信号，降低信令开销。
在一种可能的设计中，方法还包括：向接入网设备上报目标下行参考信号的索引。
在一种可能的设计中，N1个下行参考信号包括终端设备在进入非激活态时关联的下行参考信号。
通过实施上述方法，N1个下行参考信号与终端设备存在关联关系，可以使得N1个下行参考信号被终端设备选中的概率增加，从而在降低信令开销的同时，提高终端设备数据传输的灵活性。
在一种可能的设计中，该方法还包括：接收来自接入网设备的第二配置信息，第二配置信息用于指示N2个下行参考信号以及第二对应关系；第二对应关系为第一套CG资源配置中的Y个CG时机与N2个下行参考信号的对应关系，N2个下行参考信号为下行参考信号突发中包括的部分下行参考信号；Y、N2为大于0的整数。
在一种可能的设计中，N1小于N2。
在一种可能的设计中，X个CG时机位于T1个CG周期，Y个CG时机位于T2个CG周期，T2个CG周期与T1个CG周期相邻，T1、T2为大于0的整数；Y个CG时机中的一个CG时机位于T2个CG周期中的一个CG周期，Y个CG时机中的一个CG时机对应N2个下行参考信号中的一个或多个下行参考信号，T2个CG周期中的一个周期对应N2个下行参考信号中的一个或多个下行参考信号。
在一种可能的设计中，Y个CG时机对应的HARQ进程号相同，Y个CG时机对应的HARQ进程号是根据T2个CG周期中第j个CG周期包括的物理上行共享信道PUSCH的起始时间位置确定的，j为大于等于1且小于等于T2的整数；或者，一个CG周期中包括的CG时机对应的混合自动重传请求HARQ进程号是根据一个CG周期中道PUSCH的起始时间位置确定的；或者，一个CG周期中包括的第一CG时机对应的HARQ进程号是根据一个CG周期中PUSCH的起始时间位置以及第一CG时机包括的DMRS资源确定的；第一CG时机为一个CG周期中任一CG时机。
在一种可能的设计中，第二配置信息包括第二指示信息，第二指示信息用于指示N2个下行参考信号。
第二方面，本申请实施例提供一种通信方法，该方法用于实现接入网设备侧的功能，例如可以应用于接入网设备或者接入网设备中的芯片，本申请实施例不限该方法的具体的执行主体。可选的，该方法可以由接入网设备侧的多个功能模块共同交互实现，各功能模块执行的方法也在本申请的保护范围。以该方法应用于接入网设备为例，在该方法中，接入网设备向终端设备发送第一配置信息，第一配置信息用于指示第一套配置授权CG资源配置以及第一对应关系；第一对应关系为第一套CG资源配置中的X个CG时机与N1个下行参 考信号的对应关系；X、N1为大于0的整数；向终端设备发送N1个下行参考信号，并接收来自终端设备的上行数据；其中，承载上行数据的CG时机是第一对应关系中与第一下行参考信号对应的CG时机，第一下行参考信号是从N1个下行参考信号中确定的。
可选的，第一配置信息可以是在RRC层、MAC层或者物理层生成的。N1个下行参考信号可以是在物理层发送的。可以在物理层接收来自终端的上行数据。物理层可以将上行数据递交至RLC层。RLC层可以将上行数据递交至PDCP层。
需要说明的是，上述第二方面所描述的方法与第一方面所描述的方法相对应，第二方面所描述的方法中相关技术特征的有益效果可以参见第一方面的描述，具体不再赘述。
第三方面，本申请实施例提供一种通信装置，所述通信装置可以为终端设备、能够实现终端设备侧功能的模块、或者能够设置于终端设备内部的芯片。所述通信装置具备实现上述第一方面的功能，比如，所述通信装置包括执行上述第一方面涉及的部分或全部步骤所对应的模块或单元或手段(means)，所述功能或单元或手段可以通过软件实现，或者通过硬件实现，也可以通过硬件执行相应的软件实现。
在一种可能的设计中，所述通信装置包括处理单元和通信单元，其中，通信单元可以用于收发信号，以实现该通信装置和其它装置之间的通信，比如，通信单元用于接收来自接入网设备的配置信息；处理单元可以用于执行该通信装置的一些内部操作。处理单元、通信单元执行的功能可以和上述第一方面涉及的操作相对应。
在一种可能的设计中，所述通信装置包括处理器，还可以包括收发器，所述收发器用于收发信号，所述处理器利用所述收发器，以完成上述第一方面中任意可能的设计或实现方式中的方法。其中，所述通信装置还可以包括一个或多个存储器，所述存储器用于与处理器耦合，所述存储器可以保存实现上述第一方面涉及的功能的计算机程序或指令。所述处理器可执行所述存储器存储的计算机程序或指令，当所述计算机程序或指令被执行时，使得所述通信装置实现上述第一方面任意可能的设计或实现方式中的方法。
在一种可能的设计中，所述通信装置包括处理器，处理器可以用于与存储器耦合。所述存储器可以保存实现上述第一方面涉及的功能的计算机程序或指令。所述处理器可执行所述存储器存储的计算机程序或指令，当所述计算机程序或指令被执行时，使得所述通信装置实现上述第一方面任意可能的设计或实现方式中的方法。
在一种可能的设计中，所述通信装置包括处理器和接口电路，其中，处理器用于通过所述接口电路与其它装置通信，并执行上述第一方面任意可能的设计或实现方式中的方法。
第四方面，本申请实施例提供一种通信装置，所述通信装置可以为接入网设备、能够实现接入网设备侧功能的模块、或者能够设置于接入网设备内部的芯片。所述通信装置具备实现上述第二方面的功能，比如，所述通信装置包括执行上述第二方面涉及部分或全部操作所对应的模块或单元或手段，所述模块或单元或手段可以通过软件实现，或者通过硬件实现，也可以通过硬件执行相应的软件实现。
在一种可能的设计中，所述通信装置包括处理单元、通信单元，其中，通信单元可以用于收发信号，以实现该通信装置和其它装置之间的通信，比如，通信单元用于接收来自终端设备的上行信息；处理单元可以用于执行该通信装置的一些内部操作。处理单元、通信单元执行的功能可以和上述第二方面涉及的操作相对应。
在一种可能的设计中，所述通信装置包括处理器，还可以包括收发器，所述收发器用于收发信号，所述处理器利用所述收发器，以完成上述第二方面中任意可能的设计或实现 方式中的方法。其中，所述通信装置还可以包括一个或多个存储器，所述存储器用于与处理器耦合，所述存储器可以保存实现上述第二方面涉及的功能的计算机程序或指令。所述处理器可执行所述存储器存储的计算机程序或指令，当所述计算机程序或指令被执行时，使得所述通信装置实现上述第二方面任意可能的设计或实现方式中的方法。
在一种可能的设计中，所述通信装置包括处理器，处理器可以用于与存储器耦合。所述存储器可以保存实现上述第二方面涉及的功能的计算机程序或指令。所述处理器可执行所述存储器存储的计算机程序或指令，当所述计算机程序或指令被执行时，使得所述通信装置实现上述第二方面任意可能的设计或实现方式中的方法。
在一种可能的设计中，所述通信装置包括处理器和接口电路，其中，处理器用于通过所述接口电路与其它装置通信，并执行上述第二方面任意可能的设计或实现方式中的方法。
可以理解地，上述第三方面或第四方面中，处理器可以通过硬件来实现也可以通过软件来实现，当通过硬件实现时，该处理器可以是逻辑电路、集成电路等；当通过软件来实现时，该处理器可以是一个通用处理器，通过读取存储器中存储的软件代码来实现。此外，以上处理器可以为一个或多个，存储器可以为一个或多个。存储器可以与处理器集成在一起，或者存储器与处理器分离设置。在具体实现过程中，存储器可以与处理器集成在同一块芯片上，也可以分别设置在不同的芯片上，本申请实施例对存储器的类型以及存储器与处理器的设置方式不做限定。
第五方面，本申请实施例提供一种通信系统，该通信系统包括上述第三方面所述的通信装置和上述第四方面所述的通信装置。
第六方面，本申请实施例提供一种计算机可读存储介质，所述计算机存储介质中存储有计算机可读指令，当计算机读取并执行所述计算机可读指令时，使得计算机执行上述第一方面或第二方面的任一种可能的设计中的方法。
第七方面，本申请实施例提供一种计算机程序产品，当计算机读取并执行所述计算机程序产品时，使得计算机执行上述第一方面或第二方面的任一种可能的设计中的方法。
第八方面，本申请实施例提供一种芯片，所述芯片包括处理器，所述处理器与存储器耦合，用于读取并执行所述存储器中存储的软件程序，以实现上述第一方面或第二方面的任一种可能的设计中的方法。
本申请的这些方面或其它方面在以下实施例的描述中会更加简明易懂。
附图说明
图1为本申请实施例适用的网络架构示意图；
图2为本申请实施例提供的RRC状态转换示意图；
图3为本申请实施例提供的SSB示意图；
图4为本申请实施例提供的CG时机分布示意图；
图5(a)和图5(b)为本申请实施例提供的CG时机编号示意图；
图6为本申请实施例提供的一种数据传输方法流程示意图；
图7为本申请实施例提供的下行参考信号分布示意图；
图8为本申请实施例提供的CG时机分布示意图；
图9为本申请实施例提供的CG时机分布示意图；
图10为本申请实施例提供的CG时机分布示意图；
图11为本申请实施例提供的CG时机分布示意图；
图12为本申请实施例提供的CG时机分布示意图；
图13为本申请实施例提供的发射波束与下行参考信号的对应关系示意图；
图14为本申请实施例提供的一种通信装置结构示意图；
图15为本申请实施例提供的一种通信装置结构示意图。
具体实施方式
下面结合说明书附图对本申请实施例做详细描述。
本申请实施例可以应用于各种移动通信系统，例如：新无线(new radio，NR)系统、长期演进(long term evolution，LTE)系统以及未来通信系统等其它通信系统，具体的，在此不做限制。其中，NR系统还可以称为5G系统。
本申请实施例中，以终端设备和接入网设备之间的交互为例进行描述。其中，终端设备：可以简称为终端，为具有无线收发功能的设备或可设置于该设备的芯片。其中，终端设备也可以称为用户设备(user equipment，UE)、接入终端等。在实际应用中，本申请的实施例中的终端设备可以是手机(mobile phone)、平板电脑(pad)、带无线收发功能的电脑、虚拟现实(virtual reality，VR)终端、增强现实(augmented reality，AR)终端、工业控制(industrial control)中的无线终端等。本申请实施例中，用于实现终端设备的功能的装置可以是终端设备；可以是能够应用于终端设备的模块或单元；或者可以是能够支持终端设备实现该功能的装置，例如芯片系统，该装置可以被安装在终端设备中或者与终端设备匹配使用。本申请实施例中，芯片系统可以由芯片构成，也可以包括芯片和其他分立器件。以用于实现终端设备的功能的装置是终端设备为例，描述本申请实施例提供的技术方案。
接入网设备：可以是无线网络中各种制式下无线接入设备，例如接入网设备可以是将终端设备接入到无线网络的RAN节点，又可以称为RAN设备或基站。一些接入网设备的举例为：下一代基站(generation Node B，gNodeB)、传输接收点(transmission reception point，TRP)、演进型节点B(evolved node B，eNB)、无线网络控制器(radio network controller，RNC)、节点B(node B，NB)、基站控制器(base station controller，BSC)、基站收发台(base transceiver station，BTS)、家庭基站(例如，home evolved Node B，或home Node B，HNB)、基带单元(base band unit，BBU)、或无线保真(wireless fidelity，Wi-Fi)接入点(access point，AP)等。在一种网络结构中，接入网设备可以是集中单元(centralized unit，CU)节点、分布单元(distributed unit，DU)节点、或包括CU节点和DU节点的接入网设备。作为示例，CU和DU之间的接口可以称为F1接口。可选的，该CU节点可以是CU-CP(control plane，控制面)节点、CU-UP(user plane，用户面)节点、或包括CU-CP节点和CU-UP节点的节点。DU和CU-CP之间的接口可以称为F1-C接口，DU和CU-UP之间的接口可以称为F1-U接口。在其它可能的情况下，接入网设备可以是其它为终端设备提供无线通信功能的装置。本申请的实施例对接入网设备所采用的具体技术和具体设备形态不做限定。为方便描述，本申请实施例中，为终端设备提供无线通信功能的装置称为接入网设备。本申请实施例中，用于实现接入网设备的功能的装置可以是接入网设备；可以是能够应用于接入网设备的模块或单元；或者可以是能够支持接入网设备实现该功能的装置，例如芯片系统，该装置可以被安装在接入网设备中或者与接入网设备匹配使用。
可选的，上述DU、CU、CU-CP和CU-UP可以是功能模块、硬件结构、或者功能模块+硬件结构，不予限制。
可选的，CU和DU可以根据无线网络的协议层划分：比如，分组数据汇聚层协议(packet data convergence protocol，PDCP)层及以上协议层的功能设置在CU，PDCP层以下协议层的功能设置在DU，例如，DU可以包括无线链路控制(radio link control，RLC)层、媒体接入控制(media access control，MAC)层和物理(physical,PHY)层。
在一种可能的设计中，CU-CP可以包括无线资源控制(radio resource control，RRC)层和PDCP层，CU-UP可以包括业务数据适配(service data adaptation protocol，SDAP)层和PDCP层。CU-CP中的PDCP层可以称为PDCP-C，CU-UP中的PDCP层可以称为PDCP-U。
在一种可能的设计中，DU可以包括RLC层和MAC层的功能，和，PHY层的部分功能。示例性地，DU可以包括PHY层中高层的功能或者软件模块实现的功能。其中，PHY层中高层的功能可以包括CRC校验、信道编码、速率匹配、加扰、调制、和层映射；或者，PHY层中高层的功能可以包括CRC校验、信道编码、速率匹配、加扰、调制、层映射和预编码。PHY层中低层的功能可以通过另一个与DU独立的网元实现，其中，PHY层中低层的功能可以包括预编码、资源映射、物理天线映射和射频功能；或者，PHY层中低层的功能可以包括资源映射、物理天线映射和射频功能。本申请实施例对PHY层中高层和底层的功能划分不作限制。
可以理解的，上述对CU和DU的处理功能按照协议层的划分仅仅是一些举例，也可以按照其他的方式进行划分，比如RLC层以上协议层的功能设置在CU，RLC层及以下协议层的功能设置在DU，又比如可以将CU或者DU划分为具有更多协议层的功能，又比如CU或DU还可以划分为具有协议层的部分处理功能。在一种设计中，将RLC层的部分功能和RLC层以上的协议层的功能设置在CU，将RLC层的剩余功能和RLC层以下的协议层的功能设置在DU。在另一种设计中，还可以按照业务类型或者其他系统需求对CU或者DU的功能进行划分，例如按时延划分，将处理时间需要满足时延要求的功能设置在DU，不需要满足该时延要求的功能设置在CU。在另一种设计中，CU也可以具有核心网的一个或多个功能。示例性地，CU可以设置在网络侧方便集中管理；DU可以具有多个射频功能，也可以将射频功能拉远设置。本申请实施例对此并不进行限定。
上述CU、DU、CU-CP、或CU-UP等既可以是软件模块，也可以是硬件结构，或者是软件模块+硬件结构，不予限制。
为便于理解本申请实施例，首先说明适用于本申请实施例的通信系统。如图1所示，图1为本申请实施例适用的一种网络架构示意图。图1中，终端设备可通过接入网设备接入到无线网络，以通过无线网络获取外网(例如因特网)的服务，或者通过无线网络与其它设备通信，如可以与其它终端设备通信。
图1中，接入网设备可以向终端设备发送下行参考信号，终端设备可以根据下行参考信号实现与接入网设备的同步，以及获取系统信息等。
以下行参考信号为同步信号广播信道块(synchronous signal/physical broadcast channel block，SS/PBCH block，SSB)为例，针对于一个小区(或者说载波)，接入网设备可以通过不同的发射波束发送SSB，来完成小区的广播波束覆盖。可选的，每个发射波束的发射时刻不同。如图1所示，接入网设备通过发射波束0发送SSB#0，通过发射波束1发送SSB#1， 通过发射波束2发送SSB#2等，可以理解为，发射波束0对应SSB#0，发射波束1对应SSB#1，发射波束2对应SSB#2。
接入网设备在一次波束扫描过程中所发送的SSB的集合可以称为一个SSB突发集(burst set)。SSB突发集的周期相当于一个特定波束对应的SSB的周期，可以被配置为5ms(毫秒)、10ms、20ms、40ms、80ms或160ms等。例如，5G系统中，频率范围(frequency range，FR)1对应的SSB突发集最多可以配置8个SSB，FR2对应的SSB突发集最多可以配置64个SSB，接入网设备在1个SSB突发集中发送一轮所有的SSB。
示例性地，一个SSB突发集内包括多个SSB，每个SSB的波束可以相同或不同。例如，当载波频段小于或等于3GHz时，一个SSB突发集内最多有4个SSB。
本申请实施例可以应用于多种场景，例如可以应用于终端设备处于RRC非激活态时，进行小包数据(small data)传输的场景。小包数据传输场景可以有多种，具体可以涵盖智能手机相关业务，比如应用程序(application，APP)的心跳包或推送消息；以及非智能手机的相关业务，比如可穿戴设备的周期性数据(例如心跳包)、工业无线传感器网络所发送的周期性数据等等。此外，本申请实施例中对小包数据的具体大小可以不做限定，比如100～300字节的数据包可以认为是小包数据，又比如能在一个时隙中发送完的数据包可以认为是小包数据(例如带宽资源为5M、子载波间隔为30kHz的一个时隙，若以正交相移键控(quadrature phase shift keying，QPSK)调制，则大约可传500个字节)，又比如在RRC非激活态时发送的用户面数据包和/或控制面数据包可以认为是小包数据。
进一步可选地，本申请实施例可以应用于基于免授权的上行小包数据传输场景。该场景中，接入网设备通过半静态的方式为终端设备预配置用于上行数据传输的PUSCH资源以及传输参数，当终端设备有上行数据需要发送时，直接使用预配置的PUSCH资源和参数向接入网设备发送数据，而不必接收接入网设备的动态授权，也不必进行随机接入过程。例如，LTE系统中预配置上行资源(pre-configured uplink resource，PUR)传输和NR系统中基于配置授权(configured grant，CG)的传输都属于上行免授权传输范畴。基于PUR的传输和基于CG的传输都是接入网设备通过信令为终端设备配置资源和传输参数配置，例如以下配置中的一种或多种：时域资源的周期、开环功控相关参数、波形、冗余版本序列、重复次数、跳频模式、资源分配类型、混合自动重传请求(hybrid automatic repeat request，HARQ)进程数、解调用参考信号相关参数、调制编码方案表格、资源块组大小、以及时域资源、频域资源、调制和编码方案(modulation and coding scheme，MCS)等。
基于免授权的小包数据传输中，针对终端设备在RRC非激活态时进行小包数据传输的场景，终端设备不用进行状态转换，就可以进行数据传输，从而显著降低信令开销和终端设备的功耗。在该场景中，接入网设备可以为终端设备配置用于携带上行数据的上行信道(例如PUSCH)传输的配置授权(configured grant，CG)资源。当终端设备有上行数据需要发送时，可以直接使用CG资源向接入网设备发送数据，而不必接收接入网设备的动态授权(dynamic grant)，也不必发送前导码。基于CG资源的数据传输也可以称作免授权(grant free，GF)数据传输。由于终端设备不需要通过发送前导码转入RRC连接态，可以进一步节省信令开销和终端设备的功耗。
然而，在基于CG资源的数据传输中，由于RRC非激活态的终端设备没有类似RRC连接态的波束管理(beam management)过程，因此，接入网设备不知晓RRC非激活态的终端设备的位置信息(或信道信息)，进而也不知晓使用什么样的接收波束去接收终端设 备在CG资源上发送的上行数据。当接入网设备不知晓终端设备的信道信息时，会显著增加接入网设备的接收复杂度，而且，接入网设备无法准确确定向终端设备发送该上行数据的反馈信息的波束，造成终端设备接收反馈信息的性能损失。
基于此，本申请实施例将针对基于CG资源的数据传输进行优化，降低接入网设备的接收复杂度的同时，提高数据传输的灵活度。
下面先对本申请实施例所涉及的相关技术特征进行解释说明。需要说明的是，这些解释是为了让本申请实施例更容易被理解，而不应该视为对本申请所要求的保护范围的限定。
一、终端设备的RRC状态：
终端设备的RRC状态可以在以下状态中进行转换：RRC空闲态、RRC连接态和RRC非激活态。
(1)RRC连接态：
当终端设备处于RRC连接态时，存在终端设备和接入网设备之间的RRC连接。此时，接入网设备知道该终端设备在该接入网设备的覆盖范围内或者在该接入网设备的管理范围内，例如接入网设备知道该终端设备在该接入网设备所管理的小区的覆盖范围内；核心网知道该终端设备在哪个接入网设备的覆盖范围内或者管理范围内，核心网知道通过哪个接入网设备可以定位到或者找到该终端设备。
进一步地，当终端设备处于RRC连接态时，接入网设备可以向终端设备发送终端设备特定的物理下行控制信道(physical downlink control channel，PDCCH)和/或物理下行共享信道(physical downlink shared channel，PDSCH)，和/或终端设备可以向接入网设备发送终端设备特定的物理上行共享信道(physical uplink shared channel，PUSCH)和/或物理上行控制信道(physical uplink control channel，PUCCH)。终端设备可以通过PDCCH来接收接入网设备发送的上行调度指示或下行调度指示。终端设备可以通过PUCCH向接入网设备发送混合自动重传请求(hybrid automatic repeat request，HARQ)信息，用于指示终端设备对下行数据的解调情况。
(2)RRC空闲态：
当终端设备处于RRC空闲态时，释放了终端设备和接入网之间的RRC连接。此时，终端设备可以从接入网设备接收寻呼消息、广播信道、和/或系统信息等。
进一步地，当终端设备处于RRC空闲态时，接入网设备可能不知道该终端设备是否在该接入网设备的覆盖范围内或者是否在该接入网设备的管理范围内，例如接入网设备可能不知道该终端设备是否在该接入网设备所管理的小区的覆盖范围内；核心网可能不知道终端设备在哪个接入网设备的覆盖范围内或者管理范围内，核心网可能不知道通过哪个接入网设备可以定位到或者找到该终端设备。
(3)RRC非激活态：
当终端设备处于RRC非激活态时，没有终端设备和接入网设备之间的RRC连接。此时，接入网设备可能不知道该终端设备是否在该接入网设备的覆盖范围内或者是否在该接入网设备的管理范围内，例如接入网设备可能不知道该终端设备是否在该接入网设备所管理的小区的覆盖范围内；核心网可能知道终端设备在哪个或哪些接入网设备的覆盖范围内或者管理范围内，核心网可能知道通过哪个或哪些接入网设备可以定位到或者找到该终端设备。
进一步地，当终端设备处于RRC非激活态时，终端设备可以从接入网设备接收寻呼 消息、同步信号、广播消息、和/或系统信息等。
在本申请实施例中，RRC非激活态和RRC空闲态可以统称为非连接态或RRC非连接态。如图2所示，为本申请实施例提供的一种RRC状态转换的示例图。图2中，可以包含以下几种可能的转换情形：
(1)RRC连接态转换到RRC空闲态；
示例性地，接入网设备可以向终端设备发送RRC连接释放(RRC connection release)消息，使终端设备由RRC连接态转换为RRC空闲态。
(2)RRC连接态转换到RRC非激活态；
示例性地，接入网设备可以向终端设备发送RRC连接暂停(RRC connection suspend)消息或RRC连接释放消息，使终端设备由RRC连接态转换为RRC非激活态。
(3)RRC空闲态转换到RRC连接态；
示例性地，终端设备可以通过与接入网设备的RRC连接建立过程，使终端设备由RRC空闲态转换为RRC连接态。其中，RRC建立过程可以是由终端设备的高层触发的，例如，终端设备有上行数据的发送需求时，由终端设备的高层触发RRC建立过程。或者，RRC建立过程也可以是由接入网设备触发的，例如，在终端设备处于RRC空闲态时，接入网设备向终端设备发送寻呼消息，该寻呼消息包含该终端设备的标识。相应地，终端设备从接入网设备接收到该寻呼消息后，触发RRC建立过程。
(4)RRC非激活态转换到RRC连接态；
示例性地，终端设备处于RRC非激活态时，可以通过RRC连接建立或RRC连接恢复过程，使终端设备的RRC状态转换为RRC连接态。
(5)RRC非激活态转换到RRC空闲态；
示例性地，终端设备处于RRC非激活态时，接入网设备可以通过释放过程，使得终端设备由RRC非激活态转换为RRC空闲态。
二、波束：
5G通信系统或者未来的通信系统中，可以采用波束赋形(beamforming，BF)技术来获得具有良好方向性的波束，以提升天线增益，提高信号在发射方向上的接收功率。该通信系统中的波束赋形不限于高频段，也可应用于小于6GHz的低频段。
波束可以理解为一种通信信道，波束可以是宽波束，也可为窄波束，或其它类型的波束。不同的波束可认为是不同的通信信道，通过不同的波束可发送相同的信息或不同的信息。波束包括发射波束和接收波束，发射波束可以是指信号经天线发射出去时在空间不同方向上形成的信号强度的分布，接收波束可以是指天线阵列对无线信号在空间不同方向上进行加强或削弱接收的分布。可选的，发射波束可以通过配置发射滤波器来实现，接收波束可以通过配置接收滤波器来实现，本申请实施例中所述的滤波器可以包括数字滤波器、模拟滤波或数字模拟混合滤波器，具体不做限定。
三、SSB：
本申请实施例中，SSB可以包括主同步信号(primary synchronisation signal，PSS)、辅同步信号(secondary synchronisation signal，SSS)和物理广播信道(physical broadcast channel，PBCH)中至少一项。如图3所示，在时域上，1个SSB占用4个正交频分复用(orthogonal frequency division multiplexing，OFDM)符号(symbol)，记为符号0～符号3，在频域上，1个SSB占用20个资源块(resource block，RB)(一个RB包括12个子载波)， 也就是240个子载波，子载波编号为0～239。PSS位于符号0的中间的127个子载波上，SSS位于符号2的中间的127个子载波上。为了保护PSS和SSS，分别有各自的保护子载波。保护子载波不用于承载信号，在PSS和SSS两侧分别留有子载波作为保护子载波，如图3中的SSS两侧的空白区域就是保护子载波。PBCH占用符号1和符号3的全部子载波，以及占用符号2的全部子载波中除了SSS所占用的子载波之外的剩余的子载波中的一部分子载波(即剩余的子载波中除了保护子载波之外的子载波)。
需要说明的是，在本申请实施例后面的描述中，将OFDM符号简称为符号。
四、CG资源配置：
本申请实施例中，接入网设备可以为终端设备配置至少一套CG资源配置(configuration)。一套CG资源配置可以包括以下至少一项：(1)CG周期(period)的时长；(2)一个CG周期内的重复次数，或者说，一个CG周期内所包括的重复机会的个数，又或者说，一个CG周期内所包括的CG资源(或重复时频资源)的个数；(3)一个CG周期内各CG资源的时频位置信息。其中，一个CG周期内可以包括一个或多个CG资源。一个CG周期内所包括的多个CG资源可以用于重复传输相同的数据，该多个CG资源所传输的数据的冗余版本可以相同或不同。一个CG周期内所包括的多个CG资源，也可以称为多个重复时频资源。该一个CG周期内的多个CG资源中的任意2个不同的CG资源可以是时分的、和/或频分的，不予限制。
一种实现方式中，一套CG资源配置还可以包括其它可能的信息，比如PUSCH的以下一项或多项参数：跳频指示信息(用于指示时隙内或时隙间跳频)、DMRS的配置信息(用于指示DMRS的类型、位置、长度、和/或是否预编码等)、调制和编码方案(modulation and coding scheme，MCS)表格、资源分配方式(可以为类型0(type0)、类型1(type1)或动态切换的资源分配方式)、功控指示信息、混合自动重传请求(hybrid automatic repeat request，HARQ)进程数(比如可以为1～16的一种)和重复传输时使用的冗余版本等，具体不做限定。
五、CG时机(occasion)：
CG时机可以是指一个资源单元(时间、频率、DMRS三个维度表示的资源)。一个CG时机对应一个DMRS资源以及一个CG周期中的至少一个CG资源(也可以称为重复时频资源或重复机会)。DMRS资源可以包括DMRS端口和/或DMRS序列。
CG时机可用于终端设备在非连接态时向接入网设备发送上行信息。比如，CG时机可以专用于终端设备在非连接态时发送上行信息；又比如，CG时机可用于终端设备在连接态时发送上行信息，也可用于终端设备在非连接态时发送上行信息。上行信息可以包括上行数据和/或上行信令，上行信令可以包括以下至少一项：物理层的信令、媒体接入控制(media access control，MAC)层的信令、RRC层的信令。这些上行数据和/或上行信令可以携带于终端设备特定的PUSCH上。
一种可能的实现方式中，一个CG时机对应一个CG周期中所有CG资源。举例来说，如图4所示，为本申请实施例提供的一种CG时机分布示意图。假设接入网设备配置的DMRS资源的数量为4，一个CG周期包括8个CG资源，一个CG时机对应一个DMRS资源以及一个CG周期中的8个CG资源，那么如图4所示，一个CG周期中可以包括4个CG时机，分别为CG时机1至CG时机4。
需要说明的是，图4中，是以DMRS资源和时域两个维度去展示CG时机，实际上在 一个CG周期中包括8个CG资源，每个CG时机都对应这8个CG资源，但对应不同的DMRS资源，为了表示清楚，把不同CG时机对应的CG资源分开示意，后面的其它CG时机示意图也是同理。
一种可能的实现方式中，一个CG时机可以对应一个CG周期中的部分CG资源。举例来说，如图5(a)所示，为本申请实施例提供的一种CG时机分布示意图。假设接入网设备配置的DMRS资源的数量为4，一个CG周期包括8个CG资源，一个CG时机对应一个DMRS资源以及一个CG周期中的4个CG资源，那么如图5(a)所示，一个CG周期中可以包括8个CG时机，分别为CG时机1至CG时机8。以CG时机1和CG时机2为例，分别对应相同的DMRS资源，但对应的CG资源不同。
一种可能的实现方式中，一个CG周期中的CG资源，可以平均划分给多个CG时机，类似于图5(a)所示的那样，每个CG时机对应4个CG资源；一个CG周期中的CG资源，也可以不平均划分给多个CG时机，例如，如图5(b)所示，一个CG周期包括8个CG资源，其中的5个CG资源对应一个CG时机，另外3个CG资源对应另一个CG时机。
另外，在本申请实施例中，“示例的”一词用于表示作例子、例证或说明。本申请中被描述为“示例”的任何实施例或设计方案不应被解释为比其它实施例或设计方案更优选或更具优势。确切而言，使用示例的一词旨在以具体方式呈现概念。
本申请实施例描述的网络架构以及业务场景是为了更加清楚的说明本申请实施例的技术方案，并不构成对于本申请实施例提供的技术方案的限定，本领域技术人员可知，随着网络架构的演变和新业务场景的出现，本申请实施例提供的技术方案对于类似的技术问题，同样适用。
本申请实施例中部分场景以无线通信网络中NR网络的场景为例进行说明，应当指出的是，本申请实施例中的方案还可以应用于其他无线通信网络中，相应的名称也可以用其他无线通信网络中的对应功能的名称进行替代。
本申请实施例中，为解决接入网设备不知晓终端设备的信道信息，而造成接收性能损失、接收复杂度高、和/或反馈波束不明确等问题，建立CG资源与下行参考信号之间的对应关系，如此，终端设备可以根据下行参考信号确定CG资源，并在下行参考信号对应的CG资源发送上行数据。接入网设备可以采用相应的接收波束在CG资源上接收上行数据，从而提高上行数据的接收性能，下面将详细描述。
实施例一：
如图6所示，为本申请实施例提供的一种数据传输方法流程示意图。图6中，以接入网设备与终端设备之间交互为例进行说明，接入网设备执行的操作也可以由接入网设备内部的芯片或模块执行，终端设备执行的操作也可以由终端设备内部的芯片或模块执行。参见图6，该方法包括：
S601：接入网设备向终端设备发送第一配置信息。
相应的，S602：终端设备接收来自接入网设备的第一配置信息。
本申请实施例中，第一配置信息用于指示第一套CG资源配置以及第一对应关系；其中，第一对应关系为第一套CG资源配置中的X个CG时机与N1个下行参考信号的对应关系；X、N1为大于0的整数。可选的，第一配置信息还用于指示N1个下行参考信号的配置信息。
需要说明的是，第一配置信息可以指示多套CG资源配置，这里以指示第一套CG资 源配置为例进行说明，并不代表第一配置信息只指示了第一套CG资源配置。
下面分别详细介绍第一配置信息指示的第一套CG资源配置，N1个下行参考信号以及第一对应关系。
1，关于第一套CG资源配置：
如前文所述，第一套CG资源配置可以包括但不限于以下一项或多项信息：
CG周期的时长；一个CG周期内所包括的CG资源(或重复时频资源)的个数，例如可以为1或2或4或8等；一个CG周期内各CG资源的时频位置信息等信息；跳频指示信息，用于指示PUSCH在时隙内或时隙间跳频；PUSCH的DMRS的配置信息，用于指示DMRS的类型、位置、长度、端口、序列和/或是否预编码等；PUSCH的MCS表格，指示所用的调制编码方案表格；PUSCH的资源分配方式，可以为类型0(type0)、类型1(type1)或动态切换的资源分配方式；PUSCH的功控指示信息；PUSCH的HARQ进程数，比如可以为1～16的一种；PUSCH重复传输时使用的冗余版本；CG资源配置的有效时间；和，CG PUSCH配置信息，包括但不限于时频资源、天线端口、上行预编码和层数、和/或MCS指示等，具体不做限定。
上述PUSCH用于承载上行数据。可选的，用于承载上行数据的信道还可以是其它名称，本申请不予限制。
2，关于下行参考信号：
本申请实施例中，下行参考信号包括但不限于SSB，信道状态信息参考信号(channel state information reference signal，CSI-RS)、定位参考信号(positioning reference signal，PRS)、下行解调参考信号(demodulation reference signal，DMRS)或其它可能的下行参考信号，具体不做限定。本申请实施例中，将以下行参考信号为SSB为例进行描述，其他情况不再赘述。
参考信号的一个发送周期内可以包括多个下行参考信号，N1个下行参考信号可以为一个发送周期内的部分或全部下行参考信号。例如，以下行参考信号为SSB为例，一个SSB burst set内可以包括多个SSB，N1个下行参考信号可以为一个SSB burst set内的部分或全部SSB。比如若一个SSB burst set内包括4个SSB，分别为SSB1、SSB2、SSB3、SSB4，则N1可以为小于或等于4的正整数，也就是说，N1个下行参考信号可以包括SSB1、SSB2、SSB3、SSB4中的至少一个。又比如，若一个SSB burst set内包括8个SSB，分别为SSB1、SSB2、……、SSB8，则N1可以为小于或等于8的正整数，也就是说，N1个下行参考信号可以包括SSB1、SSB2、……、SSB8中的至少一个。
一种可能的实现方式中，N1个下行参考信号中包括终端设备在进入非激活态时关联的下行参考信号。举例来说，终端设备在RRC连接态时，可以测量下行参考信号(例如SSB、CSI-RS等)并向接入网设备上报测量结果，测量结果中可以包括以下至少一项：参考信号接收功率(reference signal receiving power，RSRP)、参考信号接收质量(reference signal receiving quality，RSRQ)、和信号干扰噪声比(signal to interference plus noise ratio，SINR)，具体不做限定。接入网设备可以将测量结果大于或等于预设阈值的下行参考信号，或者将测量结果最好的下行参考信号，确定为终端设备在进入非激活态时或者进入非激活态前关联的下行参考信号。当然，终端设备也可以在测量下行参考信号之后，将测量结果大于或等于预设阈值的下行参考信号、或测量结果最好的下行参考信号上报给接入网设备。
本申请实施例中，第一配置信息可以包括第一指示信息，第一指示信息用于指示N1 个下行参考信号的信息。一种实现方式中，第一指示信息指示N1个下行参考信号的索引；例如，一个参考信号发送周期内包括8下行参考信号，对应的索引分别为1～8，假设N1等于4，N1个下行参考信号的索引分别为2～5，那么第一指示信息包括的索引为2、3、4和5。
另一种实现方式中，第一指示信息指示N1以及目标下行参考信号的索引中的至少一项，目标下行参考信号为N1个下行参考信号中指定位置的下行参考信号。例如，N1个下行参考信号可以根据预设拓展顺序以及目标下行参考信号的索引确定。第一指示信息还可以指示下行参考信号的索引是否循环，如果第一指示信息指示索引是循环的，那么最大索引之后的索引为0，例如最大索引为63，那么63之后的索引为0。
举例来说，以一个参考信号发送周期内包括64个下行参考信号，对应的索引分别为0～63，N1的取值为4为例。示例一，如图7所示，为本申请实施例提供的一种下行参考信号位置示意图。目标下行参考信号的索引为0，目标下行参考信号为4个下行参考信号的起始位置的下行参考信号，如果预设拓展顺序为从左向右或者从小到大，那么第一指示信息指示的4个下行参考信号的索引分别为0、1、2和3。
如果第一指示信息指示索引是循环的，预设拓展顺序为从右向左或者从大到小(循环)，那么第一指示信息指示的N1个下行参考信号的索引分别为0、63、62和61。
示例二，如图7所示，目标下行参考信号的索引为21，目标下行参考信号为4个下行参考信号的中间位置的下行参考信号，如果预设拓展顺序为先右后左或者先大后小，那么第一指示信息指示的4个下行参考信号的索引分别为21、22、20和23。
如果预设拓展顺序为先左后右或者先小后大，那么第一指示信息指示的4个下行参考信号的索引分别为21、20、22和19。
示例三，如图7所示，目标下行参考信号的索引为62，目标下行参考信号为4个下行参考信号的起始位置的下行参考信号，如果第一指示信息指示索引是循环的，预设拓展顺序为从左向右或者从小到大(循环)，那么第一指示信息指示的4个下行参考信号的索引分别为62、63、0和1。
需要说明的是，目标下行参考信号的索引，可以是协议中约定的，接入网设备配置的，或者可以是终端设备向接入网设备上报的，本申请实施例对此并不限定。示例一到示例三中，指定位置、拓展顺序、是否循环等规则，既可以在第一信息中指示，还可以在协议中约定，或者通过系统消息等其他消息指示。其中，协议中约定还可描述为协议中预定义。
3，关于第一关系：
如前文所述，第一对应关系为第一套CG资源配置中的X个CG时机与N1个下行参考信号的对应关系。其中，X个CG时机位于T1个CG周期中，T1为大于0的整数，一个CG周期包括X/T1个CG时机。这T1个CG周期可以称为CG小包数据传输(small data transmission，SDT)周期或者特殊CG SDT周期等。第一套CG资源配置中包括多个CG SDT周期或者特殊CG SDT周期，每个CG SDT周期或者特殊CG SDT周期均可以与N1个下行参考信号存在第一关系。
本申请实施例中，可以按照预设规则为X个CG时机进行编号，每个CG时机对应一个编号。预设规则可以是指按照CG时机对应的DMRS资源的索引从高到低(或者从低到高)、时域资源的索引从低到高(或者从高到低)、和/或频域资源的索引从低到高(或者从高到低)的顺序为CG时机进行编号。一种可能的实现方式中，每个CG周期中的CG时机独立编 号，也就是说不同CG周期中的CG时机的编号可能互相重复。例如，如图8所示，为本申请实施例提供的一种编号示意图。图8中，以X＝8，T1＝2，每个CG周期中包括4个CG资源为例，一个CG时机对应一个CG周期中的4个CG资源。每个CG周期中的CG时机的编号依次为1、2、3和4，其中，对于第1个CG周期，编号为1的CG时机对应4个CG资源和一个DMRS资源，编号为1的CG时机对应4个CG资源和一个DMRS资源，其它情况不再赘述。
另一种可能的实现方式中，T1个CG周期中的CG时机统一编号，也就是说不同CG周期中的CG时机的编号可能不重复。例如，如图9所示，为本申请实施例提供的一种编号示意图。图9中，以X＝8，T1＝4，每个CG周期中包括4个CG资源为例，一个CG时机对应一个CG周期中所有CG资源。第1个CG周期中的CG时机的编号依次为1和2；第2个CG周期中的CG时机的编号依次为3和4，第3个CG周期中的CG时机的编号依次为5和6；第4个CG周期中的CG时机的编号依次为7和8。其中，对于第1个CG周期，编号为1的CG时机对应4个CG资源和一个DMRS资源，编号为2的CG时机对应4个CG资源和一个DMRS资源，其它情况不再赘述。
本申请实施例中，一个CG时机对应N1个下行参考信号中的一个或多个下行参考信号，或者说一个下行参考信号对应一个或多个CG时机，下面分不同情况讨论。
情况一：T1个CG周期中的每个CG周期对应N1个下行参考信号，每个下行参考信号对应相同数量的CG时机，即1个下行参考信号在一个CG周期中对应(X/T1)/N1个CG时机。
在该情况中，T1个CG周期中的每个CG周期可以对应N1个下行参考信号，假设每个CG周期包括M个CG时机，一个CG时机对应P个下行参考信号，那么P*M＝N1。只需要配置P、M、N1三个参数中的任意两个，即可推算出剩余一个参数。对于该三个参数中的任意一个参数，该参数可以是协议约定的，或者是接入网设备通过信令通知终端设备的，不予限制。不同参数的配置方法可以相同，也可以不同，不予限制。
需要说明的是，本申请实施例中，可以将一个CG时机对应的下行参考信号的数量称为映射率(mapping ratio)。
举例来说，假设配置的N1＝2个下行参考信号为SSB1和SSB2，X＝4，T1＝2，每个CG周期中的CG时机独立编号，即每个CG周期中包括CG时机1和CG时机2，此时每个CG周期对应这2个下行参考信号，每个CG周期中的CG时机1可以对应SSB1，每个CG周期中的CG时机2可以对应SSB2。
情况二：T1个CG周期中的每个CG周期对应N1个下行参考信号，不同下行参考信号可能对应不同数量的CG时机。
方法一：配置各个下行参考信号对应的CG周期或CG时机，其中至少存在两个下行参考信号对应的CG周期或CG时机的数量不同；
或者，配置N1个下行参考信号中的至少一个下行参考信号与X个CG时机中第一数量的CG时机对应，且至少一个下行参考信号中的每个下行参考信号对应不同数量的CG时机；N1个下行参考信号中除该至少一个下行参考信号之外的下行参考信号，与X个CG时机中除第一数量的CG时机之外的CG时机对应，且每个下行参考信号对应相同数量的CG时机。
举例来说，假设配置的N1＝2个下行参考信号为SSB1和SSB2，X＝8，T1＝2，每个CG周期中的CG时机独立编号，即每个CG周期中包括的CG时机的编号均为CG时机1至CG时机4，此时可以配置每个CG周期中的CG时机1至CG时机3对应SSB1，每个CG周期中的CG时机4对应SSB2。
方法二：N1个下行参考信号中各个下行参考信号对应的CG周期或CG时机数量的比值为预设比值，其中至少两个下行参考信号对应的CG周期或CG时机数量的比值不等于1。
举例来说，假设配置的N1＝2个下行参考信号为SSB1和SSB2，SSB1和SSB2对应的CG时机数量的比值为1：3。例如，X＝8，T1＝2，每个CG周期中的CG时机独立编号，即每个CG周期中包括CG时机1至CG时机4，每个CG周期中的CG时机1对应SSB1，每个CG周期中的CG时机2至CG时机4对应SSB2。
情况三：T1个CG周期对应N1个下行参考信号，每个下行参考信号对应相同数量的CG时机，即一个CG时机对应N1/X个下行参考信号。
在该情况中，假设每个CG周期包括M个CG时机，一个CG时机对应P个下行参考信号，那么P*M*T1＝N1。接入网设备只需要配置P、M、T1、N1四个参数中的任意三个，即可推算出剩余一个参数。对于该四个参数中的任意一个参数，该参数可以是协议约定的，或者是接入网设备通过信令通知终端设备的，不予限制。不同参数的配置方法可以相同，也可以不同，不予限制。
举例来说，假设配置的N1＝2个下行参考信号为SSB1和SSB2，X＝8，T1＝2，T1个CG周期中的CG时机统一编号，即X个CG时机分别为CG时机1至CG时机8，此时，CG时机1至CG时机4可以对应SSB1，CG时机5至CG时机8对应SSB2。
情况四：T1个CG周期对应N1个下行参考信号，不同下行参考信号可能对应不同数量的CG时机。
和情况二类似，可以配置不同下行参考信号对应的CG周期或CG时机的数量，其中至少存在两个下行参考信号对应的CG周期或CG时机的数量不同；或者配置不同下行参考信号对应的CG周期或CG时机的数量的比值，其中至少两个下行参考信号对应的CG周期或CG时机数量的比值不等于1。
举例来说，假设配置的N1＝3个下行参考信号为SSB1、SSB2和SSB3，如图10所示，配置SSB1、SSB2和SSB3对应的CG周期的比值为1：2：4，那么SSB1可以对应1个CG周期，即对应CG周期1；SSB2可以对应2个CG周期，即对应CG周期2至CG周期3；SSB3可以对应3个CG周期，即对应CG周期4至CG周期7。
以上只是示例，还可能存在其他对应情况，在此不再一一列举。
本申请实施例中，接入网设备可以配置多个对应关系，例如接入网设备发送第二配置信息，第二配置信息用于指示N2个下行参考信号以及第二对应关系；第二对应关系为第一套CG资源配置中的Y个CG时机与N2个下行参考信号的对应关系。Y个CG时机位于T2个CG周期中，Y、T2为大于0的整数，一个CG周期包括Y/T2个CG时机，第一套CG资源配置中，可以每T2个周期中的Y个CG时机与N2个下行参考信号存在第二关系。第二对应关系的具体内容，可以参考第一关系的描述，在此不再赘述。第一配置信息和第二配置信息可以通过同一个消息发送，也可以通过不同消息发送，本申请实施例对此并不限定。
T2个CG周期与T1个CG周期为不同的周期。举例来说，如图11所示，以X＝8，T1＝4，Y＝8，T2＝2为例，X个CG时机位于CG周期1至CG周期4中，Y个CG时机位于CG周期5至CG周期6中，T2个CG周期与T1个CG周期为相邻的周期。
另外，N2可以大于N1，也可以小于N1，N2个下行参考信号和N1个下行参考信号可以存在相同的下行参考信号，也可以不存在相同的下行参考信号。
当接入网设备同时配置第一对应关系和第二对应关系时，包括X个CG时机的T1个CG 周期与包括Y个CG时机的T2个CG周期之间的比例并不限定，例如可以为1：1，举例来说，如图12所示，T1个CG周期包括1个CG周期，T2个CG周期包括2个CG周期，T1个CG周期和T2个CG周期之间交错排列。当然，第一套CG资源配置中T1个CG周期和T2个CG周期之间的比例还可以为其它情况，在此不再逐一举例。
T2个CG周期中每个CG周期包括的CG时机的数量，可以与T1个CG周期中每个CG周期包括的CG时机的数量相同，也可以不同，本申请实施例对此并不限定。例如，还是参考图12所示，T2个CG周期中每个CG周期包括4个CG时机，T1个CG周期中每个CG周期包括2个CG时机。
可选的，S603：接入网设备向终端设备发送N1个下行参考信号。
接入网设备在一个下行参考信号发送周期中发送的下行参考信号的数量大于或等于N1，比如，下行参考信号为SSB，若一个SSB burst set内包括8个SSB，分别为SSB1、SSB2、……、SSB8，N1可以为小于或等于8的正整数，例如N1＝4，那么N1个下行参考信号可以包括SSB1、SSB2、SSB3、SSB4。
需要说明的是，一个下行参考信号可以对应一个发射波束。例如，如图13所示，SSB1对应发射波束1，SSB2对应发射波束2，SSB3对应发射波束3，SSB4对应发射波束4，其中，下行参考信号和发射波束的对应关系，可以是接入网设备预先配置的。该对应关系可以告知给终端设备，也可以不告知。
可选的，S604：终端设备接收来自接入网设备的N1个下行参考信号，并从N1个下行参考信号中确定第一下行参考信号，通过第一对应关系中与第一下行参考信号对应的CG时机发送上行数据。
需要说明的是，终端设备此时可以处于非连接态，例如终端设备为RRC非激活态。
终端设备可以通过对N1个下行参考信号进行测量，可以得到N1个下行参考信号的测量值。其中，每个下行参考信号的测量值可以包括以下至少一项：RSRP、RSRQ、和SINR。
示例性地，终端设备根据N1个下行参考信号的测量值，从N1个下行参考信号中选择第一下行参考信号的方式可以有多种。比如，终端设备根据N1个下行参考信号的测量值，确定出N1个下行参考信号中测量值大于或等于第一阈值的一个或多个下行参考信号(比如下行参考信号1和下行参考信号2)，进而从这些下行参考信号中选择其中一个下行参考信号(比如下行参考信号1)作为第一下行参考信号；其中，第一阈值可以根据实际需要进行设置，可以为接入网设备配置的，也可以为终端设备自主设置的，具体不做限定。
一种可能的实现方式中，如果存在多个下行参考信号中测量值大于或等于第一阈值，也可以通过多个下行参考信号对应的CG时机发送上行数据。例如，存在2个下行参考信号，分别为SSB1和SSB2，其中CG时机1对应SSB1，CG时机2对应SSB2。若终端设备确定SSB1和SSB2的测量值均高于第一阈值，则可以通过CG时机1和CG时机2发送上行数据。
又比如，终端设备根据N1个下行参考信号的测量值，从N1个下行参考信号中选择测量值最大的下行参考信号作为第一下行参考信号。该N1个下行参考信号的测量值都小于第一阈值，或者该N1个下行参考信号中至少一个下行参考信号的测量值大于等于第一阈值。
需要说明的是，如果第一下行参考信号对应多个CG时机，可以从该多个CG时机中选择一个CG时机发送上行数据，也可以选择至少两个CG时机发送上行数据，本申请并 不限定。另外，终端设备通过CG时机发送上行数据时，可以使用CG时机中的部分或全部CG资源发送上行数据，例如一个CG时机包括8个CG资源，终端设备可以只使用其中的4个CG资源发送上行数据。终端设备具体使用几个CG资源以及使用哪几个CG资源，可以由协议约定，也可以由终端设备自主确定，还可以根据其他方式确定，本申请实施例对此并不限定。
一种可能的实现方式中，终端设备还可以通过与第一下行参考信号对应的CG时机发送测量结果，测量结果包括N1个下行参考信号的测量值，或者测量结果包括第一下行参考信号的测量值。
S605：接入网设备接收来自终端设备的上行数据。
接入网设备可以在N1个下行参考信号对应的CG时机中，采用相应的接收波束接收终端设备的上行数据。例如，若终端设备测量得到SSB1的测量值最高或较高，则可以在SSB1对应的CG时机1上采用SSB1对应的发射波束1发送上行数据。相应地，接入网设备可以在所配置的CG时机上采用相应波束去尝试接收。比如接入网设备可以采用发射波束1关联的接收波束1在CG时机1上去尝试接收，从而可以接收到终端设备发送的上行数据。其中，由于接收波束1与发射波束1具有较高关联度，从而能够有效提高接入网设备的接收性能。
采用上述方式，由于接入网设备可以为终端设备配置X个CG时机对应N1个下行参考信号，因此，当终端设备在某个下行参考信号对应的CG时机上发送上行数据时，接入网设备可以采用相应的接收波束在该CG时机上接收上行数据，从而能够有效提高接入网设备的接收性能。另一方面，由于N1个下行参考信号可能只是一个发送周期中的下行部分参考信号，因此可以降低配置的复杂度，减少配置的信令开销。
本申请实施例中，还可以对第一对应关系进行更新，一种可能的实现方式中，终端设备向接入网设备发送请求消息，该请求消息可以用于请求更新第一对应关系。接入网设备接收到该请求消息，则可以向终端设备发送重配置信息，重配置信息用于更新第一对应关系。本申请实施例中，重配置信息可以承载于DCI、MAC控制元素(control element CE)或者RRC消息中，具体并不限定。
另一种可能的实现方式中，接入网设备也可以主动发送重配置信息，此种情形下，终端设备无需向接入网设备发送请求消息。
本申请实施例中，触发终端设备向接入网设备发送请求消息的原因可以有多种。举个例子，一个下行参考信号发送周期中包括下行参考信号1和下行参考信号2，还包括其它可能的下行参考信号。终端设备确定下行参考信号2的测量值大于下行参考信号发送周期中其它下行参考信号的测量值(即下行参考信号2的测量值最大)后，若确定符合以下情形1和情形2中的至少一种，则可以向接入网设备发送请求消息。其中，情形1：下行参考信号2没有对应的CG资源，也就是说，下行参考信号2不属于N1个下行参考信号。情形2：下行参考信号2对应的CG资源的数量较少，比如下行参考信号2对应的CG资源的数量小于N1个下行参考信号中其它参考信号对应的CG资源的数量。
采用上述方式，由于接入网设备可以向终端设备发送重配置信息，来更新第一对应关系，从而当终端设备在非连接态下移动时，能够及时灵活地调整CG时机与下行参考信号的对应关系，使得终端设备在选择当前下行参考信号后，能够有更多的CG时机来发送上行数据，以保证终端设备在非连接态时的数据传输。
实施例二：
终端设备和接入网设备之间可以采用多个HARQ进程来进行数据传输，以支持多个数据包的并行传输。一个HARQ进程可以包括从初始传输到最终收到确认(acknowledge，ACK)(即收到接收方确认正确接收数据包的信息)的全部过程，或者包括从初始传输到超过最大重传次数的全部过程。可选地，这两个过程中可以包括接收否定应答(negative acknowledgement，NACK)、发送重传等过程。这一全部过程可以用一个HARQ进程号来标记，这样由于初传与重传的HARQ进程号相同，从而可以建立起初传数据包与重传数据包之间的关系，便于接收方正确接收。当终端设备和接入网设备之间采用多个HARQ进程时，意味着可以有多个这样的过程并行，即在一个HARQ进程的过程未结束时，可同时进行其他HARQ进程的传输过程。
在动态调度的数据传输中，接入网设备可以使用下行控制信息(downlink control information，DCI)调度一个PUSCH/PDSCH，该DCI中可以包括一个用于指示HARQ进程号的字段。例如，可以用4个比特来指示HARQ进程号(HARQ进程号的取值范围为0～15)，标记该PUSCH/PDSCH上传输的数据包的HARQ进程号。
然而，在基于CG资源的数据传输中，由于没有DCI动态调度，因此，接入网设备与终端设备之间没有动态显式指示HARQ进程号的方法，为此，本申请实施例中提供至少三种确定HARQ进程号的方法，下面以包括X个CG时机的T1个CG周期为例，分别进行描述，其它情况不再赘述。
方法一：T1个CG周期中，所有CG时机的HARQ进程号相同，即X个CG时机对应相同的HARQ进程号。
例如，对于与N1个下行参考信号存在第一对应关系的X个CG时机，所有CG时机对应的HARQ进程号，均根据T1个CG周期中第i个CG周期包括的PUSCH的起始时间位置(比如起始符号或第一个符号)确定，i为大于等于1且小于等于T1的整数。举例来说，终端设备与接入网设备可以通过如下公式来确定HARQ进程号：
HARQ Process ID＝[floor(CURRENT_symbol/periodicity)]modulo nrofHARQ-Processes+harq-ProcID-Offset2；
其中，HARQ Process ID表示HARQ进程号，CURRENT_symbol表示PUSCH的起始符号；
CURRENT_symbol＝(SFN×numberOfSlotsPerFrame×numberOfSymbolsPerSlot+slot number in the frame×numberOfSymbolsPerSlot+symbol number in the slot)。其中，CURRENT_symbol具体表示哪个CG周期包括的PUSCH的起始符号由参数SFN、参数slot number in the frame和参数symbol number in the slot确定。当CURRENT_symbol表示第i个CG周期包括的PUSCH的起始符号时，参数SFN的取值为第i个CG周期包括的CG时机的起始符号所在的系统帧帧号，参数slot number in the frame的取值为第i个CG周期包括的CG时机的起始符号所在的时隙在系统帧中的时隙号，参数symbol number in the slot的取值为第i个CG周期包括的CG时机的起始符号在时隙中的符号编号。
上述公式中各个参数的含义，可以参见表1所示。
表1：各个参数的含义
Figure PCTCN2022078404-appb-000001
Figure PCTCN2022078404-appb-000002
需要说明的是，在方法一中，每个CG时机对应的下行参考信号的数量可以大于1。
在该方法中，由于一个HARQ进程号可以对应多个CG时机，当终端设备需要使用HARQ进程号时，可以根据对应的下行参考信号使用该X个CG时机中的任意一个CG时机。
方法二：T1个CG周期中，每个CG周期对应一个独立的HARQ进程号，不同CG周期对应的HARQ进程号大概率不同，即X个CG时机中，位于相同CG周期的CG时机对应相同的HARQ进程号。
具体的，对于与N1个下行参考信号存在第一对应关系的X个CG时机，这X个CG时机位于T1个CG周期，对于T1个CG周期中的任一CG周期，该CG周期中包括的CG时机对应的HARQ进程号是根据该CG周期中PUSCH的起始时间位置(比如起始符号或第一个符号)确定。举例来说，终端设备与接入网设备可以通过如下公式来确定HARQ进程号：
HARQ Process ID＝[floor(CURRENT_symbol/periodicity)]modulo nrofHARQ-Processes+harq-ProcID-Offset2；
其中，HARQ Process ID表示HARQ进程号，CURRENT_symbol表示PUSCH的起始符号；
CURRENT_symbol＝(SFN×numberOfSlotsPerFrame×numberOfSymbolsPerSlot+slot number in the frame×numberOfSymbolsPerSlot+symbol number in the slot)。其中，参数SFN的取值为该CG周期包括的CG时机的起始符号所在的系统帧帧号，参数slot number in the frame的取值为该CG周期包括的CG时机的起始符号所在的时隙在系统帧中的时隙号，参数symbol number in the slot的取值为该CG周期包括的CG时机的起始符号在时隙中的符号编号。
上述公式中各个参数的含义可以参考前面的描述，在此不再赘述。
一种实现方式中，该CG周期中包括的每个CG时机对应一个下行参考信号。
上面的方法中，X个CG时机对应多个HARQ进程号，终端设备选择的下行参考信号对应的CG时机可以对应多个HARQ进程号，如果终端设备需要选用特定的HARQ进程号，从而有较大机会获得需要的HARQ进程，提高数据传输的灵活性。
方法三：T1个CG周期中，每个CG周期对应多个HARQ进程号，一个CG周期中不同CG时机对应的HARQ进程号独立设置(大概率不同)，即X个CG时机中，不同CG时机对应各自的HARQ进程号。
具体的，对于与N1个下行参考信号存在第一对应关系的X个CG时机，这X个CG时机位于T1个CG周期，对于T1个CG周期中的任一CG周期，该CG周期中任一CG时机对应的HARQ进程号是根据该CG周期中PUSCH的起始时间位置(比如起始符号或第一个符号)以及该CG时机包括的DMRS资源确定的。举例来说，终端设备与接入网设备可以通过如下公式来确定HARQ进程号：
HARQ Process ID＝{[floor(CURRENT_symbol/periodicity)]+f(DMRS-Index)}modulo nrofHARQ-Processes+harq-ProcID-Offset2；
其中，HARQ Process ID表示HARQ进程号，CURRENT_symbol表示PUSCH的起始符号；
CURRENT_symbol＝(SFN×numberOfSlotsPerFrame×numberOfSymbolsPerSlot+slot number in the frame×numberOfSymbolsPerSlot+symbol number in the slot)；其中，参数SFN的取值为该CG周期包括的CG时机的起始符号所在的系统帧帧号，参数slot number in the frame的取值为该CG周期包括的CG时机的起始符号所在的时隙在系统帧中的时隙号，参数symbol number in the slot的取值为该CG周期包括的CG时机的起始符号在时隙中的符号编号。
DMRS-Index为CG时机包括的DMRS资源的DMRS索引，f(DMRS-Index)为关于DMRS索引的函数，例如，f(DMRS-Index)＝k*DMRS-Index+b，k、b为系数，例如k和b为正整数。
一种实现方式中，该CG周期中包括的CG时机对应多个下行参考信号。
上面的方法中，每个CG时机对应至少一个HARQ进程号，每个CG周期中对应多个HARQ进程号，可以提高终端设备选择HARQ进程号的灵活性，避免在需要传输时，无法获得需要的HARQ进程，提高数据传输的灵活性。
针对于上述实施例一至实施例二，需要说明的是：
(1)上述实施例一和实施例二可以分别单独实施，或者也可以相互结合实施。
(2)上文中侧重描述了实施例一至实施例二的区别之处，除区别之处的其它内容，实施例一至实施例二可以相互参照。
(3)实施例一和实施例二所描述的各个流程图的步骤编号仅为执行流程的一种示例，并不构成对步骤执行的先后顺序的限制，本申请实施例中相互之间没有时序依赖关系的步骤之间没有严格的执行顺序。此外，各个流程图中所示意的步骤并非全部是必须执行的步骤，可以根据实际需要在各个流程图的基础上增添或者删除部分步骤。
上述本申请提供的实施例中，分别从各个设备之间交互的角度对本申请实施例提供的方法进行了介绍。为了实现上述本申请实施例提供的方法中的各功能，接入网设备或终端设备可以包括硬件结构和/或软件模块，以硬件结构、软件模块、或硬件结构加软件模块的形式来实现上述各功能。上述各功能中的某个功能以硬件结构、软件模块、还是硬件结构加软件模块的方式来执行，取决于技术方案的特定应用和设计约束条件。
本申请实施例中对模块的划分是示意性的，仅仅为一种逻辑功能划分，实际实现时可以有另外的划分方式。另外，在本申请各个实施例中的各功能模块可以集成在一个处理器中，也可以是单独物理存在，也可以两个或两个以上模块集成在一个模块中。上述集成的模块既可以采用硬件的形式实现，也可以采用软件功能模块的形式实现。
与上述构思相同，如图14所示，本申请实施例还提供一种装置1400用于实现上述方 法中接入网设备或终端设备的功能。例如，该装置可以为软件模块或者芯片系统。本申请实施例中，芯片系统可以由芯片构成，也可以包含芯片和其他分立器件。该装置1400可以包括：处理单元1401和通信单元1402。
本申请实施例中，通信单元也可以称为收发单元，可以包括发送单元和/或接收单元，分别用于执行上文方法实施例中接入网设备或终端设备发送和接收的步骤。
以下，结合图14至图15详细说明本申请实施例提供的通信装置。应理解，装置实施例的描述与方法实施例的描述相互对应，因此，未详细描述的内容可以参见上文方法实施例，为了简洁，这里不再赘述。
通信单元也可以称为收发器、收发机、收发装置等。处理单元也可以称为处理器，处理单板，处理模块、处理装置等。可选的，可以将通信单元1402中用于实现接收功能的器件视为接收单元，将通信单元1402中用于实现发送功能的器件视为发送单元，即通信单元1402包括接收单元和发送单元。通信单元有时也可以称为收发机、收发器、或收发电路等。接收单元有时也可以称为接收机、接收器、或接收电路等。发送单元有时也可以称为发射机、发射器或者发射电路等。
通信装置1400执行上面实施例中图6所示的流程中终端设备的功能时：
通信单元，用于接收第一配置信息，所述第一配置信息用于指示第一套配置授权CG资源配置以及第一对应关系；所述第一对应关系为所述第一套CG资源配置中的X个CG时机与N1个下行参考信号的对应关系；X、N1为大于0的整数；
处理单元，用于接收所述N1个下行参考信号，并从所述N1个下行参考信号中确定第一下行参考信号，其中，所述第一对应关系中与所述第一下行参考信号对应的CG时机用于当终端设备在非连接态时发送所述终端设备的上行数据。
通信装置1400执行上面实施例中图6所示的流程中接入网设备的功能时：
通信单元，用于发送第一配置信息，所述第一配置信息用于指示第一套配置授权CG资源配置，N1个下行参考信号以及第一对应关系；所述第一对应关系为所述第一套CG资源配置中的X个CG时机与所述N1个下行参考信号的对应关系；X、N1为大于0的整数；
处理单元，用于生成N1个下行参考信号；
通信单元，用于发送所述N1个下行参考信号，并接收终端设备的上行数据；
其中，承载所述上行数据的CG时机是所述第一对应关系中与第一下行参考信号对应的CG时机，所述第一下行参考信号是从所述N1个下行参考信号中确定的。
以上只是示例，处理单元1401和通信单元1402还可以执行其他功能，更详细的描述可以参考图6所示的方法实施例中相关描述，这里不加赘述。
如图15所示为本申请实施例提供的装置1500，图15所示的装置可以为图14所示的装置的一种硬件电路的实现方式。该通信装置可适用于前面所示出的流程图中，执行上述方法实施例中终端设备或者接入网设备的功能。为了便于说明，图15仅示出了该通信装置的主要部件。
如图15所示，通信装置1500包括处理器1510和接口电路1520。处理器1510和接口电路1520之间相互耦合。可以理解的是，接口电路1520可以为收发器、管脚、接口电路或输入输出接口。可选的，通信装置1500还可以包括存储器1530，用于存储处理器1510执行的指令或存储处理器1510运行指令所需要的输入数据或存储处理器1510运行指令后产生的数据。
当通信装置1500用于实现图6所示的方法时，处理器1510用于实现上述处理单元1401的功能，接口电路1520用于实现上述通信单元1402的功能。
当上述通信装置为应用于终端设备的芯片时，该终端设备芯片实现上述方法实施例中终端设备的功能。该终端设备芯片从终端设备中的其它模块(如射频模块或天线)接收信息，该信息是接入网设备发送给终端设备的；或者，该终端设备芯片向终端设备中的其它模块(如射频模块或天线)发送信息，该信息是终端设备发送给接入网设备的。
当上述通信装置为应用于接入网设备的芯片时，该接入网设备芯片实现上述方法实施例中接入网设备的功能。该接入网设备芯片从接入网设备中的其它模块(如射频模块或天线)接收信息，该信息是终端设备发送给接入网设备的；或者，该接入网设备芯片向接入网设备中的其它模块(如射频模块或天线)发送信息，该信息是接入网设备发送给终端设备的。
可以理解的是，本申请的实施例中的处理器可以是中央处理单元，还可以是其它通用处理器、数字信号处理器、专用集成电路或者其它可编程逻辑器件、晶体管逻辑器件，硬件部件或者其任意组合。通用处理器可以是微处理器，也可以是任何常规的处理器。
本申请的实施例中存储器可以是随机存取存储器、闪存、只读存储器、可编程只读存储器、可擦除可编程只读存储器、电可擦除可编程只读存储器、寄存器、硬盘、移动硬盘或者本领域熟知的任何其它形式的存储介质中。
本领域内的技术人员应明白，本申请的实施例可提供为方法、系统、或计算机程序产品。因此，本申请可采用完全硬件实施例、完全软件实施例、或结合软件和硬件方面的实施例的形式。而且，本申请可采用在一个或多个其中包含有计算机可用程序代码的计算机可用存储介质(包括但不限于磁盘存储器、光学存储器等)上实施的计算机程序产品的形式。
本申请是参照根据本申请的方法、设备(系统)、和计算机程序产品的流程图和/或方框图来描述的。应理解可由计算机程序指令实现流程图和/或方框图中的每一流程和/或方框、以及流程图和/或方框图中的流程和/或方框的结合。可提供这些计算机程序指令到通用计算机、专用计算机、嵌入式处理机或其他可编程数据处理设备的处理器以产生一个机器，使得通过计算机或其他可编程数据处理设备的处理器执行的指令产生用于实现在流程图一个流程或多个流程和/或方框图一个方框或多个方框中指定的功能的装置。
这些计算机程序指令也可存储在能引导计算机或其他可编程数据处理设备以特定方式工作的计算机可读存储器中，使得存储在该计算机可读存储器中的指令产生包括指令装置的制造品，该指令装置实现在流程图一个流程或多个流程和/或方框图一个方框或多个方框中指定的功能。
显然，本领域的技术人员可以对本申请进行各种改动和变型而不脱离本申请的范围。这样，倘若本申请的这些修改和变型属于本申请权利要求及其等同技术的范围之内，则本申请也意图包含这些改动和变型在内。

Claims (30)

  1. 一种数据传输方法，其特征在于，包括：
    接收第一配置信息，所述第一配置信息用于指示第一套配置授权CG资源配置以及第一对应关系；所述第一对应关系为所述第一套CG资源配置中的X个CG时机与N1个下行参考信号的对应关系；X、N1为大于0的整数；
    接收所述N1个下行参考信号，并从所述N1个下行参考信号中确定第一下行参考信号，其中，所述第一对应关系中与所述第一下行参考信号对应的CG时机用于当终端设备在非连接态时发送所述终端设备的上行数据。
  2. 根据权利要求1所述的方法，其特征在于，所述X个CG时机位于T1个CG周期，一个CG周期包括X/T1个CG时机，一个CG时机对应所述N1个下行参考信号中的一个或多个下行参考信号，T1为大于0的整数。
  3. 根据权利要求2所述的方法，其特征在于，T1个CG周期中的每个CG周期对应所述N1个下行参考信号，其中一个CG时机对应N1/(X/T1)个下行参考信号；
    或者，T1个CG周期中的每个CG周期对应N1/T1个下行参考信号，其中一个CG时机对应N1/X个下行参考信号。
  4. 根据权利要求1至2任一所述的方法，其特征在于，所述N1个下行参考信号中的至少一个下行参考信号与所述X个CG时机中第一数量的CG时机对应，且所述至少一个下行参考信号中的每个下行参考信号对应不同数量的CG时机；所述N1个下行参考信号中除所述至少一个下行参考信号之外的下行参考信号，与所述X个CG时机中除所述第一数量的CG时机之外的CG时机对应，且每个下行参考信号对应相同数量的CG时机。
  5. 根据权利要求1至2任一所述的方法，其特征在于，所述N1个下行参考信号中各个下行参考信号对应的CG时机数量的比值为预设比值。
  6. 根据权利要求1至5任一所述的方法，其特征在于，所述CG时机对应至少一个重复时频资源以及一个解调参考信号DMRS资源，所述至少一个重复时频资源位于同一个CG周期内。
  7. 根据权利要求2至6任一所述的方法，其特征在于，所述X个CG时机对应的HARQ进程号相同，所述X个CG时机对应的HARQ进程号是根据所述T1个CG周期中第i个CG周期包括的物理上行共享信道PUSCH的起始时间位置确定的，i为大于等于1且小于等于T1的整数；
    或者，一个CG周期中包括的CG时机对应的混合自动重传请求HARQ进程号是根据所述一个CG周期中物理上行共享信道PUSCH的起始时间位置确定的；
    或者，一个CG周期中包括的第一CG时机对应的HARQ进程号是根据所述一个CG周期中PUSCH的起始时间位置以及所述第一CG时机包括的DMRS资源确定的；所述第一CG时机为所述一个CG周期中任一CG时机。
  8. 根据权利要求1至7任一所述的方法，其特征在于，所述第一配置信息包括第一指示信息，所述第一指示信息用于指示所述N1个下行参考信号的信息。
  9. 根据权利要求8所述的方法，其特征在于，
    所述第一指示信息指示所述N1个下行参考信号的索引；
    或者，所述第一指示信息指示所述N1以及目标下行参考信号的索引中的至少一项，所述目标下行参考信号为所述N1个下行参考信号中指定位置的下行参考信号。
  10. 根据权利要求8或9所述的方法，其特征在于，所述方法还包括：
    上报所述目标下行参考信号的索引。
  11. 根据权利要求1至10任一所述的方法，其特征在于，所述N1个下行参考信号包括所述终端设备在进入非激活态时关联的下行参考信号。
  12. 一种数据传输方法，其特征在于，包括：
    发送第一配置信息，所述第一配置信息用于指示第一套配置授权CG资源配置，N1个下行参考信号以及第一对应关系；所述第一对应关系为所述第一套CG资源配置中的X个CG时机与所述N1个下行参考信号的对应关系；X、N1为大于0的整数；
    发送所述N1个下行参考信号，并接收终端设备的上行数据；
    其中，承载所述上行数据的CG时机是所述第一对应关系中与第一下行参考信号对应的CG时机，所述第一下行参考信号是从所述N1个下行参考信号中确定的。
  13. 根据权利要求12所述的方法，其特征在于，所述X个CG时机位于T1个CG周期，一个CG周期包括X/T1个CG时机，一个CG时机对应所述N1个下行参考信号中的一个或多个下行参考信号，T1为大于0的整数。
  14. 根据权利要求13所述的方法，其特征在于，T1个CG周期中的每个CG周期对应所述N1个下行参考信号，其中一个CG时机对应N1/(X/T1)个下行参考信号；
    或者，T1个CG周期中的每个CG周期对应所述N1/T1个下行参考信号，其中一个CG时机对应N1/X个下行参考信号。
  15. 根据权利要求12至13任一所述的方法，其特征在于，所述N1个下行参考信号中的至少一个下行参考信号与所述X个CG时机中第一数量的CG时机对应，且所述至少一个下行参考信号中的每个下行参考信号对应不同数量的CG时机；所述N1个下行参考信号中除所述至少一个下行参考信号之外的下行参考信号，与所述X个CG时机中除所述第一数量的CG时机之外的CG时机对应，且每个下行参考信号对应相同数量的CG时机。
  16. 根据权利要求12至13任一所述的方法，其特征在于，所述N1个下行参考信号中各个下行参考信号对应的CG时机数量的比值为预设比值。
  17. 根据权利要求12至16任一所述的方法，其特征在于，所述CG时机对应至少一个重复时频资源以及一个解调参考信号DMRS资源，所述至少一个重复时频资源位于同一个CG周期内。
  18. 根据权利要求13至17任一所述的方法，其特征在于，所述X个CG时机对应的HARQ进程号相同，所述X个CG时机对应的HARQ进程号是根据所述T1个CG周期中第i个CG周期包括的物理上行共享信道PUSCH的起始时间位置确定的，i为大于等于1且小于等于T1的整数；
    或者，一个CG周期中包括的CG时机对应的混合自动重传请求HARQ进程号是根据所述一个CG周期中物理上行共享信道PUSCH的起始时间位置确定的；
    或者，一个CG周期中包括的第一CG时机对应的HARQ进程号是根据所述一个CG周期中PUSCH的起始时间位置以及所述第一CG时机包括的DMRS资源确定的；所述第一CG时机为所述一个CG周期中任一CG时机。
  19. 根据权利要求12至18任一所述的方法，其特征在于，所述第一配置信息包括第一指示信息，所述第一指示信息用于指示所述N1个下行参考信号的信息。
  20. 根据权利要求19所述的方法，其特征在于，所述第一指示信息指示所述N1个下行参 考信号的索引；
    或者，所述第一指示信息指示所述N1以及目标下行参考信号的索引中的至少一项，所述目标下行参考信号为所述N1个下行参考信号中指定位置的下行参考信号。
  21. 根据权利要求12至20任一所述的方法，其特征在于，所述N1个下行参考信号包括所述终端设备在进入非激活态时关联的下行参考信号。
  22. 一种通信装置，其特征在于，包括用于执行如权利要求1至11中任一项所述方法的模块。
  23. 一种通信装置，其特征在于，包括用于执行如权利要求12至21中任一项所述方法的模块。
  24. 一种通信装置，其特征在于，包括处理器和存储器，所述处理器和所述存储器耦合，所述处理器用于实现如权利要求1至11中任一项所述的方法。
  25. 一种通信装置，其特征在于，包括处理器和存储器，所述处理器和所述存储器耦合，所述处理器用于实现如权利要求12至21中任一项所述的方法。
  26. 一种通信装置，其特征在于，包括处理器和接口电路，所述接口电路用于接收来自所述通信装置之外的其它通信装置的信号并传输至所述处理器或将来自所述处理器的信号发送给所述通信装置之外的其它通信装置，所述处理器通过逻辑电路或执行代码指令用于实现如权利要求1至11中任一项所述的方法。
  27. 一种通信装置，其特征在于，包括处理器和接口电路，所述接口电路用于接收来自所述通信装置之外的其它通信装置的信号并传输至所述处理器或将来自所述处理器的信号发送给所述通信装置之外的其它通信装置，所述处理器通过逻辑电路或执行代码指令用于实现如权利要求12至21中任一项所述的方法。
  28. 一种计算机可读存储介质，其特征在于，所述计算机可读存储介质中存储有计算机程序或指令，当所述计算机程序或指令被执行时，实现如权利要求1至11中任一项所述的方法或者如权利要求12至21中任一项所述的方法。
  29. 一种计算机程序产品，其特征在于，包括计算机程序或指令，当所述计算机程序或指令被执行时，实现如权利要求1至11中任一项所述的方法或者如权利要求12至21中任一项所述的方法。
  30. 一种通信系统，其特征在于，包括权利要求22、24和26中任一项所述的通信装置，和权利要求23、25和27中任一项所述的通信装置。
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WO2021013811A1 (en) * 2019-07-25 2021-01-28 Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.V. Configured grants within a transmitter cot
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