Communication method and device and storage medium

Abstract

Disclosed in an embodiment of the present disclosure are a communication method and apparatus, and a storage medium, the method comprising: a terminal device receiving configuration information of a network device, the configuration information comprising time domain information of a plurality of physical downlink control channels (PDCCH) and M transmission configuration indication states (TCI) states for receiving the plurality of PDCCHs, M being an integer greater than 0; the configuration information further comprises time domain resource information of a plurality of physical downlink shared channels (PDSCH) and N TCIstates used for receiving the plurality of PDSCHs, and N is an integer greater than 0; and under the condition that the time domain resources occupied by the at least one PDCCH and the at least one PDSCH are overlapped, determining the TCI state for receiving the PDSCH. By implementing the embodiment of the invention, the TCI state for receiving the PDCCH can be kept consistent with the TCI state for receiving the PDSCH, so that the transmission performance based on the beam is improved.

Description

Technical Field

[0001] The present disclosure relates to the field of communication technology, and in particular to a communication method, device and storage medium. Background Art

[0002] In NR (New Radio), high-frequency channels attenuate quickly, and beam-based transmission and reception are required to ensure coverage.

[0003] Currently, for beam-based reception, network equipment configures the correspondence between TCI (transmission configuration indicator) status and RS (reference signal) for terminal devices through RRC (radio resource control) signaling, thereby informing the user terminal device of the beam to be used for reception.

[0004] Rel-16 discusses the transmission of PDSCH (physical downlink shared channel) of Multi-TRP (multiple TRPs (transmission reception point)). The network equipment indicates two TCI states for multiple transmissions of PDSCH. There is a mapping relationship between the two TCI states and the time domain resources for multiple transmissions of PDSCH. And for the transmission of PDCCH (physical downlink control channel), there is also a mapping relationship between the two TCI states and the time domain resources for multiple transmissions of PDCCH.

[0005] When both PDCCH and PDSCH are configured for repeated transmission, PDCCH and PDSCH may overlap in the time domain. At this time, the network equipment and terminal equipment cannot maintain consistent TCI state, which is a technical problem that needs to be solved urgently. Summary of the invention

[0006] The embodiments of the present disclosure provide a communication method, an apparatus, and a storage medium, which improve beam-based transmission performance by determining the TCI state of a received PDSCH when there is overlap in the time domain resources occupied by at least one PDCCH and at least one PDSCH, so that the TCI state of the received PDCCH is consistent with the TCI state of the received PDSCH.

[0007] In a first aspect, an embodiment of the present disclosure provides a communication method, which is executed by a terminal device, comprising: receiving configuration information of a network device, the configuration information comprising time domain information of multiple physical downlink control channels PDCCH and M transmission configuration indication states TCI state for receiving the multiple PDCCHs, wherein M is an integer greater than 0; the configuration information also comprises time domain resource information of multiple physical downlink shared channels PDSCH and N TCIstate for receiving the multiple PDSCHs, wherein N is an integer greater than 0; in a case where there is overlap in the time domain resources occupied by at least one of the PDCCHs and at least one of the PDSCHs, determining the TCI state for receiving the PDSCH.

[0008] In this technical solution, a terminal device receives configuration information of a network device, the configuration information includes time domain information of multiple physical downlink control channels PDCCH and M transmission configuration indication states TCI state for receiving multiple PDCCHs, where M is an integer greater than 0; the configuration information also includes time domain resource information of multiple physical downlink shared channels PDSCH and N TCIstate for receiving multiple PDSCHs, where N is an integer greater than 0; when the time domain resources occupied by at least one PDCCH and at least one PDSCH overlap, the TCI state for receiving the PDSCH is determined. In this way, the TCI state for receiving the PDCCH can be kept consistent with the TCI state for receiving the PDSCH, thereby improving the beam-based transmission performance.

[0009] In some embodiments, the time domain resources occupied by at least one of the PDCCHs and at least one of the PDSCHs overlap, including: the time domain resources occupied by the i-th PDCCH among the multiple PDCCHs and the h-th PDSCH among the multiple PDSCHs overlap, where i is an integer greater than 0, and h is an integer greater than 0.

[0010] In some embodiments, the time domain resources occupied by the i-th PDCCH among the multiple PDCCHs and the h-th PDSCH among the multiple PDSCHs overlap, including at least one of the following: the transmission mode of the multiple PDCCHs is the intra-slot TDM method, and the transmission mode of the multiple PDSCHs is the intra-slot TDM method; the transmission mode of the multiple PDCCHs is the intra-slot TDM method, and the transmission mode of the multiple PDSCHs is the inter-slot TDM method; the transmission mode of the multiple PDCCHs is the inter-slot TDM method, and the transmission mode of the multiple PDSCHs is the inter-slot TDM method; the transmission mode of the multiple PDCCHs is the single frequency network SFN or frequency division multiplexing FDM method, and the transmission mode of the multiple PDSCHs is SFN or space division multiplexing SDM or FDM method; and the multiple PDCCHs are the SFN or FDM method, and the multiple PDSCHs are the time division multiplexing TDM method.

[0011] In some embodiments, the determining the TCI state of receiving the PDSCH includes: the hth PDSCH uses the TCI state corresponding to the ith PDCCH.

[0012] In some embodiments, the M TCI states are identical to the N TCI states.

[0013] In some embodiments, the value of N is 2, the multiple PDSCHs include two PDSCHs, and the PDSCHs other than the h-th PDSCH use a TCIstate among the N TCI states that is different from the TCI state corresponding to the i-th PDCCH.

[0014] In some embodiments, the value of N is 2, and the multiple PDSCHs include L PDSCHs, where L is an even number greater than 2; the TCI state for receiving the PDSCH is determined according to a mapping rule of the TCI state; wherein the mapping rule of the TCI state is cyclic Mapping or sequential Mapping.

[0015] In some embodiments, the method further includes: when the mapping rule of the TCI state is cyclicMapping, when h is an odd number, the odd-numbered PDSCH uses the TCI state corresponding to the i-th PDCCH, and the even-numbered PDSCH uses a different TCI state among the N TCI states that corresponds to the TCI state corresponding to the i-th PDCCH; or when h is an even number, the even-numbered PDSCH uses the TCI state corresponding to the i-th PDCCH, and the odd-numbered PDSCH uses a different TCI state among the N TCI states that corresponds to the TCI state corresponding to the i-th PDCCH.

[0016] In some embodiments, the method further includes: when the mapping rule of the TCI state is sequentialMapping, the 4j+1th and 4j+2th PDSCHs use the TCI state corresponding to the ith PDCCH, and the 4j+3th and 4j+4th PDSCHs use a TCI state among N TCI states that is different from the TCI state corresponding to the ith PDCCH, where j is an integer greater than or equal to 0; or, the first L / 2 PDSCHs use the TCI state corresponding to the ith PDCCH, and the last L / 2 PDSCHs use a TCI state among N TCI states that is different from the TCI state corresponding to the ith PDCCH.

[0017] In some embodiments, the M TCI states are not one-to-one identical to the N TCI states.

[0018] In some embodiments, the value of N is 2, and the multiple PDSCHs include two PDSCHs, the first PDSCH uses the first TCI state among N TCI states and the second PDSCH uses the second TCI state among the N TCI states; or, the first PDSCH uses the second TCI state among N TCI states and the second PDSCH uses the first TCI state among the N TCI states.

[0019] In some embodiments, the value of N is 2, and the multiple PDSCHs include L PDSCHs, where L is an even number greater than 2; and the TCI state for receiving the PDSCH is determined according to a mapping rule of cyclic Mapping or sequential Mapping.

[0020] In some embodiments, the method further includes: according to the mapping rules of the cyclic Mapping, the odd-numbered PDSCH uses the first TCI state among the N TCI states, and the even-numbered PDSCH uses the second TCI state among the N TCI states; wherein, if there is no overlap with the time domain resources occupied by the first PDSCH among the multiple PDSCHs, it remains unchanged or is postponed successively; or the odd-numbered PDSCH uses the second TCI state among the N TCI states, and the even-numbered PDSCH uses the first TCI state among the N TCI states; wherein, if there is no overlap with the time domain resources occupied by the first PDSCH among the multiple PDSCHs, it remains unchanged or is postponed successively.

[0021] In some embodiments, the method further includes: according to the mapping rules of the sequential Mapping, the 4k+1 and 4k+2 use the first TCI state, and the 4k+3 and 4k+4 use the second TCI state, where k is an integer greater than or equal to 0; wherein, if there is no overlap with the time domain resources occupied by the first PDSCH among the multiple PDSCHs, they remain unchanged or are postponed successively; or, the first L / 2 PDSCHs use the TCI state corresponding to the first PDCCH, and the last L / 2 PDSCHs use a different TCI state among the N TCI states that corresponds to the TCI state corresponding to the second PDCCH; wherein, if there is no overlap with the time domain resources occupied by the first PDSCH among the multiple PDSCHs, they remain unchanged or are postponed successively.

[0022] In some embodiments, when there is an overlap in the time domain resources occupied by at least one of the PDCCHs and at least one of the PDSCHs, determining the TCI state for receiving the PDSCH includes: the terminal device does not expect that the sth PDCCH and the s+1th PDCCH among the multiple PDCCHs both overlap with the time domain resources occupied by one of the multiple PDSCHs, where s is an integer greater than 0.

[0023] In a second aspect, an embodiment of the present disclosure provides another communication method, which is executed by a network device, comprising: sending configuration information of a terminal device, the configuration information comprising time domain information of multiple physical downlink control channels PDCCH and M transmission configuration indication states TCI state for sending the multiple PDCCHs, wherein M is an integer greater than 0; the configuration information also comprises time domain resource information of multiple physical downlink shared channels PDSCH and N TCIstate for sending the multiple PDSCHs, wherein N is an integer greater than 0; in a case where there is an overlap in the time domain resources occupied by at least one of the PDCCHs and at least one of the PDSCHs, determining the TCI state for sending the PDSCH.

[0024] In some embodiments, the time domain resources occupied by at least one of the PDCCHs and at least one of the PDSCHs overlap, including: the time domain resources occupied by the i-th PDCCH among the multiple PDCCHs and the h-th PDSCH among the multiple PDSCHs overlap, where i is an integer greater than 0, and h is an integer greater than 0.

[0025] In some embodiments, the time domain resources occupied by the i-th PDCCH among the multiple PDCCHs and the h-th PDSCH among the multiple PDSCHs overlap, including at least one of the following: the transmission mode of the multiple PDCCHs is the intra-slot TDM method, and the transmission mode of the multiple PDSCHs is the intra-slot TDM method; the transmission mode of the multiple PDCCHs is the intra-slot TDM method, and the transmission mode of the multiple PDSCHs is the inter-slot TDM method; the transmission mode of the multiple PDCCHs is the inter-slot TDM method, and the transmission mode of the multiple PDSCHs is the inter-slot TDM method; the transmission mode of the multiple PDCCHs is the single frequency network SFN or frequency division multiplexing FDM method, and the transmission mode of the multiple PDSCHs is SFN or space division multiplexing SDM or FDM method; the multiple PDCCHs are SFN or FDM method, and the multiple PDSCHs are time division multiplexing TDM method.

[0026] In some embodiments, the determining the TCI state for sending the PDSCH includes: the hth PDSCH uses the TCI state corresponding to the ith PDCCH.

[0027] In some embodiments, the M TCI states are identical to the N TCI states.

[0028] In some embodiments, the value of N is 2, the multiple PDSCHs include two PDSCHs, and the PDSCHs other than the h-th PDSCH use a TCIstate among the N TCI states that is different from the TCI state corresponding to the i-th PDCCH.

[0029] In some embodiments, the value of N is 2, and the multiple PDSCHs include L PDSCHs, where L is an even number greater than 2; the TCI state for sending the PDSCH is determined according to a mapping rule of the TCI state; wherein the mapping rule of the TCI state is cyclic mapping or sequential mapping.

[0030] In some embodiments, the method further includes: when the mapping rule of the TCI state is cyclicMapping, when h is an odd number, the odd-numbered PDSCH uses the TCI state corresponding to the i-th PDCCH, and the even-numbered PDSCH uses a different TCI state among the N TCI states that corresponds to the TCI state corresponding to the i-th PDCCH; or when h is an even number, the even-numbered PDSCH uses the TCI state corresponding to the i-th PDCCH, and the odd-numbered PDSCH uses a different TCI state among the N TCI states that corresponds to the TCI state corresponding to the i-th PDCCH.

[0031] In some embodiments, the method further includes: when the mapping rule of the TCI state is sequentialMapping, the 4j+1th and 4j+2th PDSCHs use the TCI state corresponding to the ith PDCCH, and the 4j+3th and 4j+4th PDSCHs use a TCI state among N TCI states that is different from the TCI state corresponding to the ith PDCCH, where j is an integer greater than or equal to 0; or, the first L / 2 PDSCHs use the TCI state corresponding to the ith PDCCH, and the last L / 2 PDSCHs use a TCI state among N TCI states that is different from the TCI state corresponding to the ith PDCCH.

[0032] In some embodiments, the M TCI states are not one-to-one identical to the N TCI states.

[0033] In some embodiments, the value of N is 2, and the multiple PDSCHs include two PDSCHs, the first PDSCH uses the first TCI state among N TCI states and the second PDSCH uses the second TCI state among the N TCI states; or, the first PDSCH uses the second TCI state among N TCI states and the second PDSCH uses the first TCI state among the N TCI states.

[0034] In some embodiments, the value of N is 2, and the multiple PDSCHs include L PDSCHs, where L is an even number greater than 2; according to a mapping rule of cyclic Mapping or sequential Mapping, the TCI state for sending the PDSCH is determined.

[0035] In some embodiments, the method further includes: according to the mapping rules of the cyclic Mapping, the odd-numbered PDSCH uses the first TCI state among the N TCI states, and the even-numbered PDSCH uses the second TCI state among the N TCI states; wherein, if there is no overlap with the time domain resources occupied by the first PDSCH among the multiple PDSCHs, it remains unchanged or is postponed successively; or the odd-numbered PDSCH uses the second TCI state among the N TCI states, and the even-numbered PDSCH uses the first TCI state among the N TCI states; wherein, if there is no overlap with the time domain resources occupied by the first PDSCH among the multiple PDSCHs, it remains unchanged or is postponed successively.

[0036] In some embodiments, the method further comprises:

[0037] According to the mapping rules of the sequential Mapping, the 4k+1 and 4k+2 use the first TCIstate, and the 4k+3 and 4k+4 use the second TCI state, where k is an integer greater than or equal to 0; wherein, if there is no overlap with the time domain resources occupied by the first PDSCH among the multiple PDSCHs, they remain unchanged or are postponed successively; or, the first L / 2 PDSCHs use the TCI state corresponding to the first PDCCH, and the last L / 2 PDSCHs use a different TCI state among the N TCI states that corresponds to the TCI state corresponding to the second PDCCH; wherein, if there is no overlap with the time domain resources occupied by the first PDSCH among the multiple PDSCHs, they remain unchanged or are postponed successively.

[0038] In some embodiments, when there is an overlap in the time domain resources occupied by at least one of the PDCCHs and at least one of the PDSCHs, determining the TCI state for sending the PDSCH includes: the terminal device does not expect that the sth PDCCH and the s+1th PDCCH among the multiple PDCCHs both overlap with the time domain resources occupied by one of the multiple PDSCHs, where s is an integer greater than 0.

[0039] In a third aspect, an embodiment of the present disclosure provides a communication device, which has some or all of the functions of the terminal device in the method described in the first aspect above. For example, the functions of the communication device may have some or all of the functions in the embodiments of the present disclosure, or may have the functions of implementing any one of the embodiments of the present disclosure alone. The functions may be implemented by hardware, or may be implemented by hardware executing corresponding software. The hardware or software includes one or more units or modules corresponding to the above functions.

[0040] In one implementation, the structure of the communication device may include a transceiver module and a processing module, and the processing module is configured to support the communication device to perform the corresponding functions in the above method. The transceiver module is used to support communication between the communication device and other devices. The communication device may also include a storage module, which is used to couple with the transceiver module and the processing module, and store the computer programs and data necessary for the communication device.

[0041] As an example, the processing module may be a processor, the transceiver module may be a transceiver or a communication interface, and the storage module may be a memory.

[0042] In one implementation, the communication device includes: a transceiver module, used to receive configuration information of a network device, the configuration information including time domain information of multiple physical downlink control channels PDCCH and M transmission configuration indication states TCI state for receiving the multiple PDCCHs, where M is an integer greater than 0; the configuration information also includes time domain resource information of multiple physical downlink shared channels PDSCH and N TCIstate for receiving the multiple PDSCHs, where N is an integer greater than 0; a processing module, used to determine the TCI state for receiving the PDSCH when there is overlap in the time domain resources occupied by at least one of the PDCCHs and at least one of the PDSCHs.

[0043] In a fourth aspect, an embodiment of the present disclosure provides another communication device, which has some or all of the functions of the network device in the method example described in the second aspect above, such as the functions of the communication device may have some or all of the functions in the embodiments of the present disclosure, or may have the functions of implementing any one of the embodiments of the present disclosure alone. The functions may be implemented by hardware, or may be implemented by hardware executing corresponding software. The hardware or software includes one or more units or modules corresponding to the above functions.

[0044] In one implementation, the structure of the communication device may include a transceiver module and a processing module, and the processing module is configured to support the communication device to perform the corresponding functions in the above method. The transceiver module is used to support communication between the communication device and other devices. The communication device may also include a storage module, which is used to couple with the transceiver module and the processing module, and store the computer programs and data necessary for the communication device.

[0045] In one implementation, the communication device includes: a transceiver module, used to send configuration information of a terminal device, the configuration information including time domain information of multiple physical downlink control channels PDCCH and M transmission configuration indication states TCI state for sending the multiple PDCCHs, where M is an integer greater than 0; the configuration information also includes time domain resource information of multiple physical downlink shared channels PDSCH and N TCIstate for sending the multiple PDSCHs, where N is an integer greater than 0; a processing module, used to determine the TCI state for sending the PDSCH when there is an overlap in the time domain resources occupied by at least one of the PDCCHs and at least one of the PDSCHs.

[0046] In a fifth aspect, an embodiment of the present disclosure provides a communication device, which includes a processor. When the processor calls a computer program in a memory, the method described in the first aspect is executed.

[0047] In a sixth aspect, an embodiment of the present disclosure provides a communication device, which includes a processor. When the processor calls a computer program in a memory, the method described in the second aspect is executed.

[0048] In a seventh aspect, an embodiment of the present disclosure provides a communication device, which includes a processor and a memory, in which a computer program is stored; the processor executes the computer program stored in the memory so that the communication device executes the method described in the first aspect above.

[0049] In an eighth aspect, an embodiment of the present disclosure provides a communication device, which includes a processor and a memory, in which a computer program is stored; the processor executes the computer program stored in the memory so that the communication device executes the method described in the second aspect above.

[0050] In a ninth aspect, an embodiment of the present disclosure provides a communication device, which includes a processor and an interface circuit, wherein the interface circuit is used to receive code instructions and transmit them to the processor, and the processor is used to execute the code instructions to enable the device to execute the method described in the first aspect above.

[0051] In a tenth aspect, an embodiment of the present disclosure provides a communication device, which includes a processor and an interface circuit, wherein the interface circuit is used to receive code instructions and transmit them to the processor, and the processor is used to run the code instructions to enable the device to execute the method described in the second aspect above.

[0052] In the eleventh aspect, an embodiment of the present disclosure provides a communication system, the system comprising the communication device described in the third aspect and the communication device described in the fourth aspect, or the system comprising the communication device described in the fifth aspect and the communication device described in the sixth aspect, or the system comprising the communication device described in the seventh aspect and the communication device described in the eighth aspect, or the system comprising the communication device described in the ninth aspect and the communication device described in the tenth aspect.

[0053] In a twelfth aspect, an embodiment of the present invention provides a computer-readable storage medium for storing instructions for the above-mentioned terminal device, and when the instructions are executed, the terminal device executes the method described in the first aspect.

[0054] In a thirteenth aspect, an embodiment of the present invention provides a readable storage medium for storing instructions used by the above-mentioned network device, and when the instructions are executed, the network device executes the method described in the above-mentioned second aspect.

[0055] In a fourteenth aspect, the present disclosure further provides a computer program product comprising a computer program, which, when executed on a computer, enables the computer to execute the method described in the first aspect above.

[0056] In a fifteenth aspect, the present disclosure further provides a computer program product comprising a computer program, which, when executed on a computer, enables the computer to execute the method described in the second aspect above.

[0057] In a sixteenth aspect, the present disclosure provides a chip system, which includes at least one processor and an interface, for supporting a terminal device to implement the functions involved in the first aspect, for example, determining or processing at least one of the data and information involved in the above method. In a possible design, the chip system also includes a memory, which is used to store computer programs and data necessary for the terminal device. The chip system can be composed of a chip, or it can include a chip and other discrete devices.

[0058] In a seventeenth aspect, the present disclosure provides a chip system, which includes at least one processor and an interface, and is used to support a network device to implement the functions involved in the second aspect, for example, determining or processing at least one of the data and information involved in the above method. In a possible design, the chip system also includes a memory, and the memory is used to store computer programs and data necessary for the network device. The chip system can be composed of a chip, or it can include a chip and other discrete devices.

[0059] In an eighteenth aspect, the present disclosure provides a computer program, which, when executed on a computer, enables the computer to execute the method described in the first aspect.

[0060] In a nineteenth aspect, the present disclosure provides a computer program which, when executed on a computer, enables the computer to execute the method described in the second aspect. BRIEF DESCRIPTION OF THE DRAWINGS

[0061] In order to more clearly illustrate the technical solutions in the embodiments of the present disclosure or the background technology, the drawings required for use in the embodiments of the present disclosure or the background technology will be described below.

[0062] Figure 1 is an architecture diagram of a communication system provided by an embodiment of the present disclosure;

[0063] Figure 2 is a flow chart of a communication method provided by an embodiment of the present disclosure;

[0064] Figure 3 is a flow chart of another communication method provided by an embodiment of the present disclosure;

[0065] Figure 4 is a structural diagram of a communication device provided by an embodiment of the present disclosure;

[0066] Figure 5is a schematic diagram of the structure of another communication device provided by an embodiment of the present disclosure;

[0067] Figure 6 It is a schematic diagram of the structure of a chip provided in an embodiment of the present disclosure. DETAILED DESCRIPTION

[0068] The technical solution provided by the embodiments of the present disclosure can be applied to various communication systems. For example, including but not limited to LTE system, fifth generation (5th-generation, referred to as 5G) system, NR system, and future evolution system or multiple communication fusion systems. Among them, the 5G system can be a non-standalone (NSA) 5G system or a standalone (SA) 5G system.

[0069] In order to better understand a communication method disclosed in an embodiment of the present disclosure, a communication system to which the embodiment of the present disclosure is applicable is first described below.

[0070] See also Figure 1 , Figure 1 The schematic diagram of the architecture of a communication system 10 provided in an embodiment of the present disclosure. The communication system 10 may include but is not limited to a network device and a terminal device. Figure 1 The number and form of devices shown are for illustrative purposes only and do not constitute a limitation on the embodiments of the present disclosure. In actual applications, two or more network devices and two or more terminal devices may be included. Figure 1 The communication system 10 shown includes a network device 101 and a terminal device 102 as an example.

[0071] The network device 101 in the embodiment of the present disclosure is an entity on the network side for sending signals, or receiving signals, or sending and receiving signals. The network device 101 may be a device deployed in a radio access network (RAN) to provide wireless communication functions for terminal devices, such as a TRP, a base station, various forms of control nodes (e.g., a network controller, a wireless controller (e.g., a wireless controller in a cloud radio access network (CRAM) scenario)), etc. Specifically, the network device 101 may be various forms of macro base stations, micro base stations (also called small stations), relay stations, access points (APs), etc., or may be antenna panels of base stations. The control node may be connected to multiple base stations and configure resources for multiple terminal devices covered by the multiple base stations. In systems using different wireless access technologies, the names of devices with base station functions may be different. For example, an evolved NodeB (eNB or eNodeB) may be called an evolved NodeB in an LTE system, and a next generation node base station (gNB) in a 5G system or an NR system. The present disclosure does not limit the specific name of the base station. The network device 101 may also be a network device 101 in a public land mobile network (PLMN) to be evolved in the future.

[0072] In some deployments, the network device 101 may include a centralized unit (CU) and a distributed unit (DU). The network device 101 may also include an active antenna unit (AAU). The CU implements some functions of the network device 101, and the DU implements some functions of the network device 101. For example, the CU is responsible for processing non-real-time protocols and services, and implementing the functions of the radio resource control (RRC) and packet data convergence protocol (PDCP) layers. The DU is responsible for processing physical layer protocols and real-time services, and implementing the functions of the radio link control (RLC), media access control (MAC) and physical (PHY) layers. The AAU implements some physical layer processing functions, radio frequency processing and related functions of active antennas. Since the information of the RRC layer will eventually become the information of the PHY layer, or be converted from the information of the PHY layer, therefore, under this architecture, high-level signaling, such as RRC layer signaling or PDCP layer signaling, can also be considered to be sent by DU, or, sent by DU+AAU. It can be understood that the network device 101 can be a device including one or more of a CU node, a DU node, and an AAU node. In addition, the CU can be divided into a network device 101 in the RAN, or the CU can be divided into a network device 101 in the core network (CN), which is not limited here.

[0073] The terminal device 102 in the embodiment of the present disclosure is an entity on the user side for receiving signals, or sending signals, or receiving signals and sending signals. The terminal device 102 is used to provide one or more of voice services and data connectivity services to users. The terminal device 102 can also be called user equipment (UE), terminal, access terminal, user unit, user station, mobile station, remote station, remote terminal, mobile device, user terminal, wireless communication device, user agent or user device. The terminal device 102 may be a mobile station (MS), a subscriber unit, a drone, an Internet of Things (IoT) device, a station (ST) in a wireless local area network (WLAN), a cellular phone, a smart phone, a cordless phone, a wireless data card, a tablet computer, a session initiation protocol (SIP) phone, a wireless local loop (WLL) station, a personal digital assistant (PDA) device, a laptop computer, a machine type communication (MTC) terminal, a handheld device with wireless communication function, a computing device or other processing device connected to a wireless modem, a vehicle-mounted device, a wearable device (also referred to as a wearable smart device). The terminal device 102 may also be a terminal device in a next generation communication system, for example, a terminal device in a 5G system or a terminal device in a future evolved PLMN, a terminal device in an NR system, etc.

[0074] The technical solution provided by the embodiments of the present disclosure can be applied to a variety of communication scenarios, such as machine to machine (M2M), macro and micro communications, enhanced mobile broadband (eMBB), ultra-reliable and low latency communication (URLLC), Internet of Vehicles, and massive machine type communication (mMTC).

[0075] The network architecture and business scenarios described in the embodiments of the present disclosure are intended to more clearly illustrate the technical solutions of the embodiments of the present disclosure, and do not constitute a limitation on the technical solutions provided by the embodiments of the present disclosure. It is known to those skilled in the art that with the evolution of network architecture and the emergence of new business scenarios, the technical solutions provided by the embodiments of the present disclosure are also applicable to similar technical problems.

[0076] The communication method and device provided by the present disclosure are described in detail below with reference to the accompanying drawings.

[0077] In NR, especially when the communication frequency band is in frequency range 2 (above 6GHz), due to the rapid attenuation of high-frequency channels, beam-based transmission and reception are required to ensure coverage. Currently, for beam-based reception, network equipment uses signaling to indicate the TCI (transmission configuration indicator) state of quasi co-location QCL (Quasi Co-location) type D to inform the terminal device of the beam to be used when receiving.

[0078] Rel-16 discusses the transmission of PDSCH of Multi-TRP (Multiple Transmission and Reception Point). The network equipment indicates two TCI states for multiple transmission of PDSCH. There is a mapping relationship between the two TCIstates and the resources used for multiple transmission of PDSCH.

[0079] When the transmission mode of PDSCH is TDM (time division multiplexing), there is a mapping relationship between two TCI states and resources used for multiple transmission of PDSCH as follows:

[0080] The transmission mode of PDSCH is intra-slot TDM method: PDSCH is transmitted only twice, the PDSCH at the front in the time domain uses the first TCI state; the PDSCH at the back in the time domain uses the second TCI state.

[0081] The PDSCH transmission method is inter-slot TDM method: PDSCH is only transmitted twice, the PDSCH at the front in the time domain uses the first TCI state; the PDSCH at the back in the time domain uses the second TCI state. If the PDSCH is transmitted more than twice, there are two methods: cyclic mapping and sequential mapping.

[0082] Among them, the cyclic mapping is: the first PDSCH in the time domain position uses the first TCI state, and the second PDSCH in the time domain position uses the second TCI state; then the third PDSCH in the time domain position uses the first TCI state, and the fourth PDSCH in the time domain position uses the second TCI state, and so on.

[0083] Sequential mapping: The first and second PDSCHs in the time domain use the first TCI state, the third and fourth PDSCHs in the time domain use the second TCI state, the fifth and sixth PDSCHs in the time domain use the first TCI state, and the seventh and eighth PDSCHs in the time domain use the second TCI state, in sequence.

[0084] For PDCCH transmission, when the PDCCH transmission mode also uses the TDM transmission mode, the mapping mode of multiple PDCCHs and two TCI states can be the same as the mapping mode of multiple PDSCHs and two TCI states. For example: the first PDCCH in the time domain position uses the first TCI state, and the second PDCCH in the time domain position uses the second TCI state, and so on.

[0085] As for the network equipment indicating two TCI states for multiple transmissions of PDSCH, there is a mapping relationship between the two TCI states and the time domain resources for multiple transmissions of PDSCH. And for the transmission of PDCCH (physical downlink control channel), there is also a mapping relationship between the two TCI states and the time domain resources for multiple transmissions of PDCCH. When both PDCCH and PDSCH are configured for repeated transmission, PDCCH and PDSCH may overlap in the time domain. If the time domain overlaps, according to the previous mapping relationship, the TCI states of PDCCH and PDSCH are different. If there is no unified rule, the network equipment and terminal equipment will not be able to keep the TCI state consistent. This is a technical problem that needs to be solved urgently.

[0086] Based on this, the embodiments of the present disclosure provide a communication method, device and storage medium to determine the TCI state of each PDSCH when the PDCCH and PDSCH overlap in the time domain, so that the network device and the terminal device maintain the consistency of the TCI state and improve the beam-based transmission performance.

[0087] See also Figure 2 , Figure 2 It is a flow chart of a communication method provided by an embodiment of the present disclosure.

[0088] like Figure 2 As shown, the method is executed by a terminal device, and the method may include but is not limited to the following steps:

[0089] S1: Receive configuration information of a network device, the configuration information including time domain information of multiple physical downlink control channels PDCCH and M transmission configuration indication states TCI state for receiving multiple PDCCHs, where M is an integer greater than 0; the configuration information also includes time domain resource information of multiple physical downlink shared channels PDSCH and N TCIstate for receiving multiple PDSCHs, where N is an integer greater than 0.

[0090] S2: When time domain resources occupied by at least one PDCCH and at least one PDSCH overlap, determine the TCI state of the received PDSCH.

[0091] Among them, the time domain resources occupied by at least one PDCCH and at least one PDSCH overlap, including: the time domain resources occupied by one PDCCH and one PDSCH overlap; or, the time domain resources occupied by one PDCCH and multiple PDSCHs overlap; or, the time domain resources occupied by multiple PDCCHs and one PDSCH overlap; or, the time domain resources occupied by multiple PDCCHs and multiple PDSCHs overlap, etc.; wherein multiple is two or more.

[0092] It is understandable that when the time domain resources occupied by at least one PDCCH and at least one PDSCH overlap, the terminal device may need to use two TCI states to receive the same PDSCH, and the time for TCI state switching may cause reception interruption, or the terminal device may not be able to support the use of more than two TCI states for reception, which will affect the beam-based transmission performance.

[0093] In an embodiment of the present disclosure, by determining the TCI state of receiving PDSCH when there is overlap in the time domain resources occupied by at least one PDCCH and at least one PDSCH, the TCI state of sending PDSCH by the network device is consistent with the TCI state of receiving PDSCH by the terminal device, thereby improving the beam-based transmission performance.

[0094] By implementing the embodiments of the present disclosure, the terminal device receives configuration information of the network device, the configuration information includes time domain information of multiple physical downlink control channels PDCCH and M transmission configuration indication states TCIstate for receiving multiple PDCCHs, where M is an integer greater than 0; the configuration information also includes time domain resource information of multiple physical downlink shared channels PDSCH and N TCIstate for receiving multiple PDSCHs, where N is an integer greater than 0; when the time domain resources occupied by at least one PDCCH and at least one PDSCH overlap, the TCI state of the received PDSCH is determined. In this way, the TCI state of the received PDCCH can be kept consistent with the TCI state of the received PDSCH, thereby improving the beam-based transmission performance.

[0095] In some embodiments, the time domain resources occupied by at least one PDCCH and at least one PDSCH overlap, including: the time domain resources occupied by the i-th PDCCH among multiple PDCCHs and the h-th PDSCH among multiple PDSCHs overlap, where i is an integer greater than 0, and h is an integer greater than 0.

[0096] In an exemplary embodiment, when i is 1 and h is 1, time domain resources occupied by the first PDCCH among the multiple PDCCHs and the first PDSCH among the multiple PDSCHs overlap.

[0097] In yet another exemplary embodiment, when i is 2 and h is 1, time domain resources occupied by the second PDCCH among the multiple PDCCHs and the first PDSCH among the multiple PDSCHs overlap.

[0098] In some embodiments, the time domain resources occupied by the i-th PDCCH among multiple PDCCHs and the h-th PDSCH among multiple PDSCHs overlap, including: the transmission mode of multiple PDCCHs is the intra-slot TDM method, and the transmission mode of multiple PDSCHs is the intra-slot TDM method; or, the transmission mode of multiple PDCCHs is the intra-slot TDM method, and the transmission mode of multiple PDSCHs is the inter-slot TDM method; or, the transmission mode of multiple PDCCHs is the inter-slot TDM method, and the transmission mode of multiple PDSCHs is the inter-slot TDM method; or, the transmission mode of multiple PDCCHs is the single frequency network SFN or frequency division multiplexing FDM method, and the transmission mode of multiple PDSCHs is SFN or space division multiplexing SDM or FDM method; or, multiple PDCCHs are SFN or FDM method, and multiple PDSCHs are time division multiplexing TDM method.

[0099] Among them, the time domain resources occupied by the i-th PDCCH among multiple PDCCHs and the h-th PDSCH among multiple PDSCHs overlap, including: multiple PDCCHs can be two PDCCHs, i is an integer greater than 0 and less than or equal to 2; multiple PDSCHs can be two PDSCHs, h is an integer greater than 0 and less than or equal to 2; or multiple PDSCHs can be more than two.

[0100] In an exemplary embodiment, the plurality of PDCCHs is two PDCCHs, and the plurality of PDSCHs is two PDSCHs.

[0101] Among them, the transmission mode of the two PDCCHs is the intra-slot TDM method, and the transmission mode of the two PDSCHs is the intra-slot TDM method; or, the transmission mode of the two PDCCHs is the intra-slot TDM method, and the transmission mode of the two PDSCHs is the inter-slot TDM method; or, the transmission mode of the two PDCCHs is the inter-slot TDM method, and the transmission mode of the two PDSCHs is the inter-slot TDM method; or, the transmission mode of the two PDCCHs is the single frequency network SFN or frequency division multiplexing FDM method, and the transmission mode of the two PDSCHs is SFN or space division multiplexing SDM or FDM method; or, the two PDCCHs are SFN or FDM method, and the two PDSCHs are time division multiplexing TDM method.

[0102] In some embodiments, determining a TCI state of a received PDSCH includes: an h-th PDSCH uses a TCI state corresponding to an i-th PDCCH.

[0103] In the embodiment of the present disclosure, when the time domain resources occupied by the i-th PDCCH among multiple PDCCHs and the h-th PDSCH among multiple PDSCHs overlap, the h-th PDSCH uses the TCI state corresponding to the i-th PDCCH; wherein i is an integer greater than 0, and h is an integer greater than 0. In this way, the TCI state of the PDSCH sent by the network device can be consistent with the TCI state of the PDSCH received by the terminal device, thereby improving the beam-based transmission performance.

[0104] In some embodiments, the M TCI states are identical to the N TCI states. For example: PDCCH#1 needs to use the first TCI state, PDCCH#2 needs to use the second TCI state, PDSCH#1 needs to use the third TCIstate, and PDSCH#2 needs to use the fourth TCI state. Unified TCI state means that the first TCI state is the same as the third TCI state, the second TCI state is the same as the fourth TCI state; or the first TCI state is the same as the fourth TCI state, and the second TCI state is the same as the third TCI state. In other words: PDCCH#1 and PDSCH#1 use the same TCIstate, PDCCH#2 and PDSCH#2 use the same TCIstate; or PDCCH#1 and PDSCH#2 use the same TCIstate, PDCCH#2 and PDSCH#1 use the same TCIstate. All of the above situations can be called "M TCIstates are identical to N TCI states."

[0105] It can be understood that among the M TCI states of multiple PDCCHs and the N TCI states of multiple PDSCHs, the M TCI states are identical to the N TCI states, so the TCI state of the received PDCCH is identical to the TCIstate of the received PDSCH and remains consistent.

[0106] In some embodiments, the value of N is 2, the multiple PDSCHs include two PDSCHs, and PDSCHs other than the h-th PDSCH use a TCI state among the N TCI states that is different from the TCI state corresponding to the i-th PDCCH.

[0107] In an embodiment of the present disclosure, when the time domain resources occupied by the i-th PDCCH among multiple PDCCHs and the h-th PDSCH among two PDSCHs overlap, PDSCHs other than the h-th PDSCH use a TCI state in the two TCI states that is different from the TCI state corresponding to the i-th PDCCH.

[0108] When h is 1, the second PDSCH uses a TCI state different from the TCIstate corresponding to the i-th PDCCH in the two TCI states, so that the corresponding relationship between the PDCCH and the TCI state changes in the opposite direction compared with the previous method.

[0109] Exemplarily, multiple PDCCHs include 2 PDCCHs, the first PDCCH uses TCI state#1, and the second PDCCH uses TCI state#2; multiple PDSCHs include 2 PDSCHs, and according to the traditional mapping relationship, the first PDSCH uses TCIstate#1, and the second PDSCH uses TCI state#2. However, since the second (i.e., h=2) PDCCH and the first (i.e., i=1) PDSCH overlap in the time domain, based on the present invention, the first PDSCH needs to use the same TCI state#2 as the second PDCCH, while the second PDSCH uses TCI state#1.

[0110] In some embodiments, the value of N is 2, and the multiple PDSCHs include L PDSCHs, where L is an even number greater than 2; the TCI state of the received PDSCH is determined according to a TCI state mapping rule; wherein the TCI state mapping rule is cyclic mapping or sequential mapping.

[0111] In the embodiment of the present disclosure, when the time domain resources occupied by the i-th PDCCH among multiple PDCCHs and the h-th PDSCH among L PDSCHs overlap (where i is an integer greater than 0, and h is an integer greater than 0), the value of N is 2, and the multiple PDSCHs include L PDSCHs, where L is an even number greater than 2; the TCI state of the received PDSCH is determined according to the mapping rule of the TCI state.

[0112] Specifically, the mapping rule of the TCI state is cyclic mapping or sequential mapping.

[0113] In some embodiments, when the mapping rule of the TCI state is cyclic Mapping, when h is an odd number, the odd-numbered PDSCH uses the TCI state corresponding to the i-th PDCCH, and the even-numbered PDSCH uses a different TCI state of the TCI state corresponding to the i-th PDCCH among the N TCI states; or when h is an even number, the even-numbered PDSCH uses the TCI state corresponding to the i-th PDCCH, and the odd-numbered PDSCH uses a different TCI state of the TCIstate corresponding to the i-th PDCCH among the N TCI states.

[0114] Among them, when the mapping rule of TCI state is cyclic Mapping, when h is 1, the first PDSCH uses the TCI state corresponding to the i-th PDCCH; the second PDSCH uses a different TCI state of the TCI state corresponding to the i-th PDCCH among the N TCI states; the third PDSCH uses the TCIstate corresponding to the i-th PDCCH, and the fourth PDSCH uses a different TCIstate of the TCI state corresponding to the i-th PDCCH among the N TCI states; and proceeds according to this rule.

[0115] Exemplarily, multiple PDCCHs include 2 PDCCHs, the first PDCCH uses TCI state#1, and the second PDCCH uses TCI state#2; multiple PDSCHs include 4 PDSCHs. Since the second (i.e., h=2) PDCCH and the first (i.e., i=1) PDSCH overlap in the time domain, the first PDSCH needs to use the same TCI state#2 as the second PDCCH, while the second PDSCH uses TCI state#1, the third PDSCH uses TCI state#2, and the fourth PDSCH uses TCIstate#1.

[0116] In the disclosed embodiment, when the mapping rule of the TCI state is cyclic Mapping, different rules are used to determine the TCI state of the received PDSCH when the h-th PDSCH is an odd-numbered PDSCH or an even-numbered PDSCH, respectively. This enables the TCI state of the PDSCH sent by the network device to be consistent with the TCI state of the PDSCH received by the terminal device, thereby improving beam-based transmission performance.

[0117] In some embodiments, when the mapping rule of TCI state is sequential Mapping, the 4j+1th and 4j+2th PDSCHs use the TCI state corresponding to the i-th PDCCH, and the 4j+3th and 4j+4th PDSCHs use a TCI state different from the TCI state corresponding to the i-th PDCCH among N TCI states, where j is an integer greater than or equal to 0; or, the first L / 2 PDSCHs use the TCI state corresponding to the i-th PDCCH, and the last L / 2 PDSCHs use a TCI state different from the TCI state corresponding to the i-th PDCCH among N TCIstates.

[0118] Among them, when the value of h is 1, the time domain resources occupied by the i-th PDCCH in multiple PDCCHs and the first PDSCH in multiple PDSCHs overlap, and the TCI state of the received PDSCH is determined. The first and second PDSCHs use the TCI state corresponding to the i-th PDCCH, the third and fourth PDSCHs use a TCI state different from the TCI state corresponding to the i-th PDCCH in N TCI states, the fifth and sixth PDSCHs use the TCI state corresponding to the i-th PDCCH, and the seventh and eighth PDSCHs use a TCI state different from the TCI state corresponding to the i-th PDCCH in N TCI states, and so on. This is to solve the problem that the time domain resources occupied by the i-th PDCCH in multiple PDCCHs and the first PDSCH in multiple PDSCHs overlap, and the TCI state of the received PDSCH is determined.

[0119] Exemplarily, multiple PDCCHs include 2 PDCCHs, the first PDCCH uses TCI state#1, and the second PDCCH uses TCI state#2; multiple PDSCHs include 4 PDSCHs. Since the second (i.e., h=2) PDCCH and the first (i.e., i=1) PDSCH overlap in the time domain, the first PDSCH and the second PDSCH need to use the same TCI state#2 as the second PDCCH, while the third PDSCH and the fourth PDSCH use TCI state#1.

[0120] In some other embodiments, the M TCI states are not one-to-one identical to the N TCI states.

[0121] In some embodiments, the value of N is 2, the multiple PDSCHs include two PDSCHs, the first PDSCH uses the first TCI state among N TCI states and the second PDSCH uses the second TCI state among the N TCI states; or, the first PDSCH uses the second TCI state among the N TCI states and the second PDSCH uses the first TCI state among the N TCI states.

[0122] Among them, when the M TCI states are not one-to-one the same as the N TCI states, the first PDSCH uses the first TCI state of the two TCI states and the second PDSCH uses the second TCI state of the two TCI states; or, the first PDSCH uses the second TCI state of the two TCI states and the second PDSCH uses the first TCI state of the two TCI states.

[0123] In the disclosed embodiment, when the first PDSCH originally uses the first TCI state of two TCI states and the second PDSCH uses the second TCI state of the two TCI states, since the time domain resources occupied by the first PDSCH and the i-th PDCCH overlap, the first PDSCH uses the same TCIstate as the i-th PDCCH, and the second PDSCH remains unchanged and still uses the second TCI state of the two TCI states, or the second PDSCH uses the first TCI state of the two TCI states, and is calculated according to the first time.

[0124] Exemplarily, multiple PDCCHs include 2 PDCCHs, the first PDCCH uses TCI state#1, and the second PDCCH uses TCI state#2; multiple PDSCHs include 2 PDSCHs, and the TCI states corresponding to the multiple PDSCHs are TCI state#3 and TCI state#4. Since the second (i.e., h=2) PDCCH and the first (i.e., i=1) PDSCH overlap in the time domain, the first PDSCH needs to use the same TCI state#2 as the second PDCCH, and the second PDSCH uses TCI state#4, regardless of whether the first PDSCH uses TCI state#3; or the second PDSCH uses TCI state#3, that is, since the first PDSCH does not use TCI state#3, the second PDSCH starts from TCI state#3.

[0125] In some embodiments, the value of N is 2, the multiple PDSCHs include L PDSCHs, where L is an even number greater than 2; and the TCI state of the received PDSCH is determined according to a mapping rule of cyclic Mapping or sequential Mapping.

[0126] In some embodiments, according to the mapping rules of cyclic Mapping, the odd-numbered PDSCH uses the first TCI state among N TCI states, and the even-numbered PDSCH uses the second TCI state among N TCI states; wherein, if there is no overlap with the time domain resources occupied by the first PDSCH among multiple PDSCHs, it remains unchanged or is postponed successively; or the odd-numbered PDSCH uses the second TCI state among N TCI states, and the even-numbered PDSCH uses the first TCI state among N TCI states; wherein, if there is no overlap with the time domain resources occupied by the first PDSCH among multiple PDSCHs, it remains unchanged or is postponed successively.

[0127] Exemplarily, multiple PDCCHs include 2 PDCCHs, the first PDCCH uses TCI state#1, and the second PDCCH uses TCI state#2; multiple PDSCHs include 4 PDSCHs, and the TCI states corresponding to the multiple PDSCHs are TCI state#3 and TCI state#4. Since the second (i.e., h=2) PDCCH and the first (i.e., i=1) PDSCH overlap in the time domain, the first PDSCH needs to use the same TCI state#2 as the second PDCCH, while the second PDSCH uses TCI state#4, that is, regardless of whether the first PDSCH uses TCI state#3, the third PDSCH uses TCI state#3, and the fourth PDSCH uses TCI state#4; or the second PDSCH uses TCI state#3, that is, since the first PDSCH does not use TCI state#3, the second PDSCH starts from TCI state#3, the third PDSCH uses TCI state#4, and the fourth PDSCH uses TCI state#3.

[0128] In some embodiments, according to the mapping rules of sequential Mapping, the 4k+1 and 4k+2 use the first TCI state, and the 4k+3 and 4k+4 use the second TCI state, where k is an integer greater than or equal to 0; wherein, if there is no overlap with the time domain resources occupied by the first PDSCH among multiple PDSCHs, they remain unchanged or are postponed successively; or, the first L / 2 PDSCHs use the TCI state corresponding to the first PDCCH, and the last L / 2 PDSCHs use a different TCI state of the TCI state corresponding to the second PDCCH among the N TCIstates; wherein, if there is no overlap with the time domain resources occupied by the first PDSCH among multiple PDSCHs, they remain unchanged or are postponed successively.

[0129] Exemplarily, multiple PDCCHs include 2 PDCCHs, the first PDCCH uses TCI state#1, and the second PDCCH uses TCI state#2; multiple PDSCHs include 4 PDSCHs, and the TCI states corresponding to the multiple PDSCHs are TCI state#3 and TCI state#4. Since the second (i.e., h=2) PDCCH and the first (i.e., i=1) PDSCH overlap in the time domain, the first PDSCH needs to use the same TCI state#2 as the second PDCCH, while the second PDSCH uses TCI state#3, and the third PDSCH and the fourth PDSCH use TCI state#4; or the second PDSCH and the third PDSCH use TCIstate#3, that is, since the first PDSCH does not use TCI state#3, the second PDSCH starts from TCI state#3, and the fourth PDSCH uses TCI state#4.

[0130] In some embodiments, when there is overlap in the time domain resources occupied by at least one PDCCH and at least one PDSCH, the TCI state of receiving the PDSCH is determined, including: the terminal device does not expect that the sth PDCCH and the s+1th PDCCH among multiple PDCCHs overlap with the time domain resources occupied by one of the multiple PDSCHs, where s is an integer greater than 0.

[0131] See also Figure 3 , Figure 3 It is a flowchart of another communication method provided by an embodiment of the present disclosure.

[0132] like Figure 3 As shown, the method is performed by a network device, and the method may include but is not limited to the following steps:

[0133] S10: Send configuration information of the terminal device, the configuration information includes time domain information of multiple physical downlink control channels PDCCH and M transmission configuration indication states TCI state used to send multiple PDCCHs, where M is an integer greater than 0; the configuration information also includes time domain resource information of multiple physical downlink shared channels PDSCH and N TCIstate used to send multiple PDSCHs, where N is an integer greater than 0.

[0134] S20: When time domain resources occupied by at least one PDCCH and at least one PDSCH overlap, determine a TCI state for sending the PDSCH.

[0135] Among them, the time domain resources occupied by at least one PDCCH and at least one PDSCH overlap, including: the time domain resources occupied by one PDCCH and one PDSCH overlap; or, the time domain resources occupied by one PDCCH and multiple PDSCHs overlap; or, the time domain resources occupied by multiple PDCCHs and one PDSCH overlap; or, the time domain resources occupied by multiple PDCCHs and multiple PDSCHs overlap, etc., and the multiple is two or more.

[0136] It is understandable that when the time domain resources occupied by at least one PDCCH and at least one PDSCH overlap, the terminal device may need to use two TCI states to receive the same PDSCH, and the time for TCI state switching may cause reception interruption, or the terminal device may not be able to support the use of more than two TCI states for reception, which will affect the beam-based transmission performance.

[0137] In an embodiment of the present disclosure, by determining the TCI state for sending PDSCH when there is overlap in the time domain resources occupied by at least one PDCCH and at least one PDSCH, the TCI state for sending PDSCH by the network device is made consistent with the TCI state for receiving PDSCH by the terminal device, thereby improving the beam-based transmission performance.

[0138] By implementing the embodiments of the present disclosure, the network device sends configuration information of the terminal device, the configuration information includes time domain information of multiple physical downlink control channels PDCCH and M transmission configuration indication states TCIstate for sending multiple PDCCHs, where M is an integer greater than 0; the configuration information also includes time domain resource information of multiple physical downlink shared channels PDSCH and N TCIstate for sending multiple PDSCHs, where N is an integer greater than 0; when there is overlap in the time domain resources occupied by at least one PDCCH and at least one PDSCH, the TCI state for sending PDSCH is determined. In this way, the TCI state of the network device sending PDSCH can be kept consistent with the TCI state of the terminal device receiving PDSCH, thereby improving the beam-based transmission performance.

[0139] In some embodiments, the time domain resources occupied by at least one PDCCH and at least one PDSCH overlap, including: the time domain resources occupied by the i-th PDCCH among multiple PDCCHs and the h-th PDSCH among multiple PDSCHs overlap, where i is an integer greater than 0, and h is an integer greater than 0.

[0140] In an exemplary embodiment, when i is 1 and h is 1, time domain resources occupied by the first PDCCH among the multiple PDCCHs and the first PDSCH among the multiple PDSCHs overlap.

[0141] In yet another exemplary embodiment, when i is 2 and h is 1, time domain resources occupied by the second PDCCH among the multiple PDCCHs and the first PDSCH among the multiple PDSCHs overlap.

[0142] In some embodiments, the time domain resources occupied by the i-th PDCCH among multiple PDCCHs and the h-th PDSCH among multiple PDSCHs overlap, including: the transmission mode of multiple PDCCHs is the intra-slot TDM method, and the transmission mode of multiple PDSCHs is the intra-slot TDM method; or, the transmission mode of multiple PDCCHs is the intra-slot TDM method, and the transmission mode of multiple PDSCHs is the inter-slot TDM method; or, the transmission mode of multiple PDCCHs is the inter-slot TDM method, and the transmission mode of multiple PDSCHs is the inter-slot TDM method; or, the transmission mode of multiple PDCCHs is the single frequency network SFN or frequency division multiplexing FDM method, and the transmission mode of multiple PDSCHs is SFN or space division multiplexing SDM or FDM method; or, multiple PDCCHs are SFN or FDM method, and multiple PDSCHs are time division multiplexing TDM method.

[0143] Among them, the time domain resources occupied by the i-th PDCCH among multiple PDCCHs and the h-th PDSCH among multiple PDSCHs overlap, including: multiple PDCCHs can be two PDCCHs, i is an integer greater than 0 and less than or equal to 2; multiple PDSCHs can be two PDSCHs, h is an integer greater than 0 and less than or equal to 2; or multiple PDSCHs can be more than two.

[0144] In an exemplary embodiment, the plurality of PDCCHs is two PDCCHs, and the plurality of PDSCHs is two PDSCHs.

[0145] Among them, the transmission mode of the two PDCCHs is the intra-slot TDM method, and the transmission mode of the two PDSCHs is the intra-slot TDM method; or, the transmission mode of the two PDCCHs is the intra-slot TDM method, and the transmission mode of the two PDSCHs is the inter-slot TDM method; or, the transmission mode of the two PDCCHs is the inter-slot TDM method, and the transmission mode of the two PDSCHs is the inter-slot TDM method; or, the transmission mode of the two PDCCHs is the single frequency network SFN or frequency division multiplexing FDM method, and the transmission mode of the two PDSCHs is SFN or space division multiplexing SDM or FDM method; or, the two PDCCHs are SFN or FDM method, and the two PDSCHs are time division multiplexing TDM method.

[0146] In some embodiments, determining a TCI state for sending a PDSCH includes: an h-th PDSCH uses a TCI state corresponding to an i-th PDCCH.

[0147] In the embodiment of the present disclosure, when the time domain resources occupied by the i-th PDCCH among multiple PDCCHs and the h-th PDSCH among multiple PDSCHs overlap, the h-th PDSCH uses the TCI state corresponding to the i-th PDCCH; wherein i is an integer greater than 0, and h is an integer greater than 0. In this way, the TCI state of the PDSCH sent by the network device can be consistent with the TCI state of the PDSCH received by the terminal device, thereby improving the beam-based transmission performance.

[0148] In some embodiments, the M TCI states are identical to the N TCI states. For example: PDCCH#1 needs to use the first TCI state, PDCCH#2 needs to use the second TCI state, PDSCH#1 needs to use the third TCIstate, and PDSCH#2 needs to use the fourth TCI state. Unified TCI state means that the first TCI state is the same as the third TCI state, the second TCI state is the same as the fourth TCI state; or the first TCI state is the same as the fourth TCI state, and the second TCI state is the same as the third TCI state. In other words: PDCCH#1 and PDSCH#1 use the same TCIstate, PDCCH#2 and PDSCH#2 use the same TCIstate; or PDCCH#1 and PDSCH#2 use the same TCIstate, PDCCH#2 and PDSCH#1 use the same TCIstate. All of the above situations can be called "M TCIstates are identical to N TCI states."

[0149] It can be understood that among the M TCI states of multiple PDCCHs and the N TCI states of multiple PDSCHs, the M TCI states are identical to the N TCI states, so that the TCI state of the PDCCH received by the terminal device is identical to the TCI state of the PDSCH received, and remains consistent.

[0150] In some embodiments, the value of N is 2, the multiple PDSCHs include two PDSCHs, and PDSCHs other than the h-th PDSCH use a TCI state among the N TCI states that is different from the TCI state corresponding to the i-th PDCCH.

[0151] In an embodiment of the present disclosure, when the time domain resources occupied by the i-th PDCCH among multiple PDCCHs and the h-th PDSCH among two PDSCHs overlap, PDSCHs other than the h-th PDSCH use a TCI state in the two TCI states that is different from the TCI state corresponding to the i-th PDCCH.

[0152] When h is 1, the second PDSCH uses a TCI state different from the TCIstate corresponding to the i-th PDCCH in the two TCI states, so that the corresponding relationship between the PDCCH and the TCI state changes in the opposite direction compared with the previous method.

[0153] Exemplarily, multiple PDCCHs include 2 PDCCHs, the first PDCCH uses TCI state#1, and the second PDCCH uses TCI state#2; multiple PDSCHs include 2 PDSCHs, and according to the traditional mapping relationship, the first PDSCH uses TCIstate#1, and the second PDSCH uses TCI state#2. However, since the second (i.e., h=2) PDCCH and the first (i.e., i=1) PDSCH overlap in the time domain, based on the present invention, the first PDSCH needs to use the same TCI state#2 as the second PDCCH, while the second PDSCH uses TCI state#1.

[0154] In some embodiments, the value of N is 2, and the multiple PDSCHs include L PDSCHs, where L is an even number greater than 2; the TCI state for sending the PDSCH is determined according to a mapping rule of the TCI state; wherein the mapping rule of the TCI state is cyclic mapping or sequential mapping.

[0155] In the embodiment of the present disclosure, when the time domain resources occupied by the i-th PDCCH among multiple PDCCHs and the h-th PDSCH among L PDSCHs overlap (where i is an integer greater than 0, and h is an integer greater than 0), the value of N is 2, and the multiple PDSCHs include L PDSCHs, where L is an even number greater than 2; the TCI state for sending the PDSCH is determined according to the mapping rule of the TCI state.

[0156] Specifically, the mapping rule of the TCI state is cyclic mapping or sequential mapping.

[0157] In some embodiments, when the mapping rule of the TCI state is cyclic Mapping, when h is an odd number, the odd-numbered PDSCH uses the TCI state corresponding to the i-th PDCCH, and the even-numbered PDSCH uses a different TCI state of the TCI state corresponding to the i-th PDCCH among the N TCI states; or when h is an even number, the even-numbered PDSCH uses the TCI state corresponding to the i-th PDCCH, and the odd-numbered PDSCH uses a different TCI state of the TCIstate corresponding to the i-th PDCCH among the N TCI states.

[0158] Among them, when the mapping rule of TCI state is cyclic Mapping, when h is 1, the first PDSCH uses the TCI state corresponding to the i-th PDCCH; the second PDSCH uses a different TCI state of the TCI state corresponding to the i-th PDCCH among the N TCI states; the third PDSCH uses the TCIstate corresponding to the i-th PDCCH, and the fourth PDSCH uses a different TCIstate of the TCI state corresponding to the i-th PDCCH among the N TCI states; and proceeds according to this rule.

[0159] Exemplarily, multiple PDCCHs include 2 PDCCHs, the first PDCCH uses TCI state#1, and the second PDCCH uses TCI state#2; multiple PDSCHs include 4 PDSCHs. Since the second (i.e., h=2) PDCCH and the first (i.e., i=1) PDSCH overlap in the time domain, the first PDSCH needs to use the same TCI state#2 as the second PDCCH, while the second PDSCH uses TCI state#1, the third PDSCH uses TCI state#2, and the fourth PDSCH uses TCIstate#1.

[0160] In the disclosed embodiment, when the mapping rule of the TCI state is cyclic Mapping, different rules are used to determine the TCI state of sending the PDSCH when the h-th PDSCH is an odd-numbered PDSCH or an even-numbered PDSCH, respectively. This enables the TCI state of the PDSCH sent by the network device to be consistent with the TCI state of the PDSCH received by the terminal device, thereby improving beam-based transmission performance.

[0161] In some embodiments, when the mapping rule of TCI state is sequential Mapping, the 4j+1th and 4j+2th PDSCHs use the TCI state corresponding to the i-th PDCCH, and the 4j+3th and 4j+4th PDSCHs use a TCI state different from the TCI state corresponding to the i-th PDCCH among N TCI states, where j is an integer greater than or equal to 0; or, the first L / 2 PDSCHs use the TCI state corresponding to the i-th PDCCH, and the last L / 2 PDSCHs use a TCI state different from the TCI state corresponding to the i-th PDCCH among N TCIstates.

[0162] Among them, when the value of h is 1, the time domain resources occupied by the i-th PDCCH in multiple PDCCHs and the first PDSCH in multiple PDSCHs overlap, and the TCI state of the received PDSCH is determined. The first and second PDSCHs use the TCI state corresponding to the i-th PDCCH, the third and fourth PDSCHs use the TCI state different from the TCI state corresponding to the i-th PDCCH in N TCI states, the fifth and sixth PDSCHs use the TCI state corresponding to the i-th PDCCH, and the seventh and eighth PDSCHs use the TCI state different from the TCI state corresponding to the i-th PDCCH in N TCI states, and so on. This is to solve the problem that the time domain resources occupied by the i-th PDCCH in multiple PDCCHs and the first PDSCH in multiple PDSCHs overlap, and determine the TCI state of the sent PDSCH.

[0163] Exemplarily, multiple PDCCHs include 2 PDCCHs, the first PDCCH uses TCI state#1, and the second PDCCH uses TCI state#2; multiple PDSCHs include 4 PDSCHs. Since the second (i.e., h=2) PDCCH and the first (i.e., i=1) PDSCH overlap in the time domain, the first PDSCH and the second PDSCH need to use the same TCI state#2 as the second PDCCH, while the third PDSCH and the fourth PDSCH use TCI state#1.

[0164] In some embodiments, the M TCI states are not one-to-one identical to the N TCI states.

[0165] In some embodiments, the value of N is 2, the multiple PDSCHs include two PDSCHs, the first PDSCH uses the first TCI state among N TCI states and the second PDSCH uses the second TCI state among the N TCI states; or, the first PDSCH uses the second TCI state among the N TCI states and the second PDSCH uses the first TCI state among the N TCI states.

[0166] Among them, when the M TCI states are not one-to-one the same as the N TCI states, the first PDSCH uses the first TCI state of the two TCI states and the second PDSCH uses the second TCI state of the two TCI states; or, the first PDSCH uses the second TCI state of the two TCI states and the second PDSCH uses the first TCI state of the two TCI states.

[0167] In the disclosed embodiment, when the first PDSCH originally uses the first TCI state of two TCI states and the second PDSCH uses the second TCI state of the two TCI states, since the time domain resources occupied by the first PDSCH and the i-th PDCCH overlap, the first PDSCH uses the same TCIstate as the i-th PDCCH, and the second PDSCH remains unchanged and still uses the second TCI state of the two TCI states, or the second PDSCH uses the first TCI state of the two TCI states, and is calculated according to the first time.

[0168] Exemplarily, multiple PDCCHs include 2 PDCCHs, the first PDCCH uses TCI state#1, and the second PDCCH uses TCI state#2; multiple PDSCHs include 2 PDSCHs, and the TCI states corresponding to the multiple PDSCHs are TCI state#3 and TCI state#4. Since the second (i.e., h=2) PDCCH and the first (i.e., i=1) PDSCH overlap in the time domain, the first PDSCH needs to use the same TCI state#2 as the second PDCCH, and the second PDSCH uses TCI state#4, regardless of whether the first PDSCH uses TCI state#3; or the second PDSCH uses TCI state#3, that is, since the first PDSCH does not use TCI state#3, the second PDSCH starts from TCI state#3.

[0169] In some embodiments, the value of N is 2, the multiple PDSCHs include L PDSCHs, where L is an even number greater than 2; and the TCI state for sending the PDSCH is determined according to a mapping rule of cyclic Mapping or sequential Mapping.

[0170] In some embodiments, according to the mapping rules of cyclic Mapping, the odd-numbered PDSCH uses the first TCI state among N TCI states, and the even-numbered PDSCH uses the second TCI state among N TCI states; wherein, if there is no overlap with the time domain resources occupied by the first PDSCH among multiple PDSCHs, it remains unchanged or is postponed successively; or the odd-numbered PDSCH uses the second TCI state among N TCI states, and the even-numbered PDSCH uses the first TCI state among N TCI states; wherein, if there is no overlap with the time domain resources occupied by the first PDSCH among multiple PDSCHs, it remains unchanged or is postponed successively.

[0171] Exemplarily, multiple PDCCHs include 2 PDCCHs, the first PDCCH uses TCI state#1, and the second PDCCH uses TCI state#2; multiple PDSCHs include 4 PDSCHs, and the TCI states corresponding to the multiple PDSCHs are TCI state#3 and TCI state#4. Since the second (i.e., h=2) PDCCH and the first (i.e., i=1) PDSCH overlap in the time domain, the first PDSCH needs to use the same TCI state#2 as the second PDCCH, while the second PDSCH uses TCI state#4, that is, regardless of whether the first PDSCH uses TCI state#3, the third PDSCH uses TCI state#3, and the fourth PDSCH uses TCI state#4; or the second PDSCH uses TCI state#3, that is, since the first PDSCH does not use TCI state#3, the second PDSCH starts from TCI state#3, the third PDSCH uses TCI state#4, and the fourth PDSCH uses TCI state#3.

[0172] In some embodiments, according to the mapping rules of sequential Mapping, the 4k+1 and 4k+2 use the first TCI state, and the 4k+3 and 4k+4 use the second TCI state, where k is an integer greater than or equal to 0; wherein, if there is no overlap with the time domain resources occupied by the first PDSCH among multiple PDSCHs, they remain unchanged or are postponed successively; or, the first L / 2 PDSCHs use the TCI state corresponding to the first PDCCH, and the last L / 2 PDSCHs use a different TCI state of the TCI state corresponding to the second PDCCH among the N TCIstates; wherein, if there is no overlap with the time domain resources occupied by the first PDSCH among multiple PDSCHs, they remain unchanged or are postponed successively.

[0173] Exemplarily, multiple PDCCHs include 2 PDCCHs, the first PDCCH uses TCI state#1, and the second PDCCH uses TCI state#2; multiple PDSCHs include 4 PDSCHs, and the TCI states corresponding to the multiple PDSCHs are TCI state#3 and TCI state#4. Since the second (i.e., h=2) PDCCH and the first (i.e., i=1) PDSCH overlap in the time domain, the first PDSCH needs to use the same TCI state#2 as the second PDCCH, while the second PDSCH uses TCI state#3, and the third PDSCH and the fourth PDSCH use TCI state#4; or the second PDSCH and the third PDSCH use TCIstate#3, that is, since the first PDSCH does not use TCI state#3, the second PDSCH starts from TCI state#3, and the fourth PDSCH uses TCI state#4.

[0174] In some embodiments, when there is overlap in the time domain resources occupied by at least one PDCCH and at least one PDSCH, the TCI state for sending the PDSCH is determined, including: the terminal device does not expect that the sth PDCCH and the s+1th PDCCH among multiple PDCCHs overlap with the time domain resources occupied by one of the multiple PDSCHs, where s is an integer greater than 0.

[0175] In the above embodiments provided by the present disclosure, the methods provided by the embodiments of the present disclosure are introduced from the perspectives of the network device and the first terminal device, respectively. In order to implement the functions in the methods provided by the above embodiments of the present disclosure, the network device and the first terminal device may include a hardware structure and a software module, and implement the above functions in the form of a hardware structure, a software module, or a hardware structure plus a software module. One of the above functions may be executed in the form of a hardware structure, a software module, or a hardware structure plus a software module.

[0176] See also Figure 4 , which is a structural diagram of a communication device 70 provided in an embodiment of the present disclosure. Figure 4 The communication device 70 shown may include a transceiver module 701 and a processing module 702. The transceiver module 701 may include a sending module and / or a receiving module, the sending module is used to implement a sending function, the receiving module is used to implement a receiving function, and the transceiver module 701 may implement a sending function and / or a receiving function.

[0177] The communication device 70 may be a terminal device, a device in a terminal device, or a device that can be used in conjunction with a terminal device. Alternatively, the communication device 70 may be a network device, a device in a network device, or a device that can be used in conjunction with a network device.

[0178] The communication device 70 is a terminal device: a transceiver module is used to receive configuration information of a network device, the configuration information includes time domain information of multiple physical downlink control channels PDCCH and M transmission configuration indication states TCI state for receiving multiple PDCCHs, where M is an integer greater than 0; the configuration information also includes time domain resource information of multiple physical downlink shared channels PDSCH and N TCIstate for receiving multiple PDSCHs, where N is an integer greater than 0; a processing module is used to determine the TCI state of the received PDSCH when there is overlap in the time domain resources occupied by at least one PDCCH and at least one PDSCH.

[0179] The communication device 70 is a network device: a transceiver module, used to send configuration information of a terminal device, the configuration information includes time domain information of multiple physical downlink control channels PDCCH and M transmission configuration indication states TCI state for sending multiple PDCCHs, where M is an integer greater than 0; the configuration information also includes time domain resource information of multiple physical downlink shared channels PDSCH and N TCIstate for sending multiple PDSCHs, where N is an integer greater than 0; a processing module, used to determine the TCIstate for sending PDSCH when there is overlap in the time domain resources occupied by at least one PDCCH and at least one PDSCH.

[0180] See also Figure 5 , Figure 5 It is a structural diagram of another communication device 1000 provided in an embodiment of the present disclosure.

[0181] The communication device 1000 may be a network device, or a terminal device, or a chip, a chip system, or a processor that supports the network device to implement the above method, or a chip, a chip system, or a processor that supports the terminal device to implement the above method. The device may be used to implement the method described in the above method embodiment, and the details may refer to the description in the above method embodiment.

[0182] The communication device 1000 may include one or more processors 1001. The processor 1001 may be a general-purpose processor or a dedicated processor, etc. For example, it may be a baseband processor or a central processing unit. The baseband processor may be used to process the communication protocol and communication data, and the central processing unit may be used to control the communication device (such as a base station, a baseband chip, a terminal device, a terminal device chip, a DU or a CU, etc.), execute a computer program, and process the data of the computer program.

[0183] Optionally, the communication device 1000 may further include one or more memories 1002, on which a computer program 1004 may be stored, and the memory 1002 executes the computer program 1004 so that the communication device 1000 executes the method described in the above method embodiment. Optionally, data may also be stored in the memory 1002. The communication device 1000 and the memory 1002 may be provided separately or integrated together.

[0184] Optionally, the communication device 1000 may further include a transceiver 1005 and an antenna 1006. The transceiver 1005 may be referred to as a transceiver unit, a transceiver, or a transceiver circuit, etc., for implementing a transceiver function. The transceiver 1005 may include a receiver and a transmitter, the receiver may be referred to as a receiver or a receiving circuit, etc., for implementing a receiving function; the transmitter may be referred to as a transmitter or a transmitting circuit, etc., for implementing a transmitting function.

[0185] Optionally, the communication device 1000 may further include one or more interface circuits 1007. The interface circuit 1007 is used to receive code instructions and transmit them to the processor 1001. The processor 1001 executes the code instructions to enable the communication device 1000 to execute the method described in the above method embodiment.

[0186] The communication device 1000 is a terminal device: the transceiver 1005 is used to perform Figure 2 The processor 1001 is used to execute Figure 2 S2 in.

[0187] The communication device 1000 is a network device: the transceiver 1005 is used to perform Figure 3 S10 in the embodiment. The processor 1001 is used to execute Figure 3 The S20 in the.

[0188] In one implementation, the processor 1001 may include a transceiver for implementing receiving and sending functions. For example, the transceiver may be a transceiver circuit, an interface, or an interface circuit. The transceiver circuit, interface, or interface circuit for implementing the receiving and sending functions may be separate or integrated. The above-mentioned transceiver circuit, interface, or interface circuit may be used for reading and writing code / data, or the above-mentioned transceiver circuit, interface, or interface circuit may be used for transmitting or delivering signals.

[0189] In one implementation, the processor 1001 may store a computer program 1003, which runs on the processor 1001 and enables the communication device 1000 to perform the method described in the above method embodiment. The computer program 1003 may be fixed in the processor 1001, in which case the processor 1001 may be implemented by hardware.

[0190] In one implementation, the communication device 1000 may include a circuit that can implement the functions of sending or receiving or communicating in the aforementioned method embodiments. The processor and transceiver described in the present disclosure may be implemented in an integrated circuit (IC), an analog IC, a radio frequency integrated circuit RFIC, a mixed signal IC, an application specific integrated circuit (ASIC), a printed circuit board (PCB), an electronic device, etc. The processor and transceiver may also be manufactured using various IC process technologies, such as complementary metal oxide semiconductor (CMOS), N-type metal oxide semiconductor (nMetal-oxide-semiconductor, NMOS), P-type metal oxide semiconductor (positive channelmetal oxide semiconductor, PMOS), bipolar junction transistor (bipolar junction transistor, BJT), bipolar CMOS (BiCMOS), silicon germanium (SiGe), gallium arsenide (GaAs), etc.

[0191] The communication device described in the above embodiments may be a terminal device (such as the terminal device in the aforementioned method embodiment), but the scope of the communication device described in the present disclosure is not limited thereto, and the structure of the communication device may not be limited thereto. Figure 5 The communication device may be an independent device or may be part of a larger device. For example, the communication device may be:

[0192] (1) Independent integrated circuit IC, or chip, or chip system or subsystem;

[0193] (2) having a set of one or more ICs, and optionally, the IC set may also include a storage component for storing data and computer programs;

[0194] (3) ASIC, such as modem;

[0195] (4) Modules that can be embedded in other devices;

[0196] (5) Receivers, terminal devices, intelligent terminal devices, cellular phones, wireless devices, handheld devices, mobile units, vehicle-mounted devices, network devices, cloud devices, artificial intelligence devices, etc.;

[0197] (6)Others

[0198] For cases where the communication device may be a chip or a chip system, see Figure 6 , is a structural diagram of a chip provided in an embodiment of the present disclosure.

[0199] like Figure 6 As shown, the chip 1100 includes a processor 1101 and an interface 1103. The number of the processor 1101 can be one or more, and the number of the interface 1103 can be multiple.

[0200] For the case where the chip is used to implement the functions of the terminal device in the embodiment of the present disclosure:

[0201] The interface 1103 is used to receive code instructions and transmit them to the processor.

[0202] The processor 1101 is used to run code instructions to execute the communication method as described in some of the above embodiments.

[0203] For the case where the chip is used to implement the functions of the network device in the embodiment of the present disclosure:

[0204] The interface 1103 is used to receive code instructions and transmit them to the processor.

[0205] The processor 1101 is used to run code instructions to execute the communication method as described in some of the above embodiments.

[0206] Optionally, the chip 1100 further includes a memory 1102, and the memory 1102 is used to store necessary computer programs and data.

[0207] Those skilled in the art may also understand that the various illustrative logical blocks and steps listed in the embodiments of the present disclosure may be implemented by electronic hardware, computer software, or a combination of the two. Whether such functions are implemented by hardware or software depends on the specific application and the design requirements of the entire system. Those skilled in the art may use various methods to implement the functions described for each specific application, but such implementation should not be understood as exceeding the scope of protection of the embodiments of the present disclosure.

[0208] The present disclosure also provides a readable storage medium having instructions stored thereon, which implement the functions of any of the above method embodiments when executed by a computer.

[0209] The present disclosure also provides a computer program product, which implements the functions of any of the above method embodiments when executed by a computer.

[0210] In the above embodiments, it can be implemented in whole or in part by software, hardware, firmware or any combination thereof. When implemented by software, it can be implemented in whole or in part in the form of a computer program product. The computer program product includes one or more computer programs. When the computer program is loaded and executed on a computer, the process or function described in the embodiment of the present disclosure is generated in whole or in part. The computer can be a general-purpose computer, a special-purpose computer, a computer network, or other programmable device. The computer program can be stored in a computer-readable storage medium, or transmitted from one computer-readable storage medium to another computer-readable storage medium. For example, the computer program can be transmitted from a website site, computer, server or data center by wired (e.g., coaxial cable, optical fiber, digital subscriber line (digital subscriber line, DSL)) or wireless (e.g., infrared, wireless, microwave, etc.) mode to another website site, computer, server or data center. The computer-readable storage medium can be any available medium that a computer can access or a data storage device such as a server or data center that includes one or more available media integrated. The available medium may be a magnetic medium (eg, a floppy disk, a hard disk, a magnetic tape), an optical medium (eg, a high-density digital video disc (DVD)), or a semiconductor medium (eg, a solid state disk (SSD)).

[0211] Unless the context requires otherwise, throughout the specification and claims, the term "comprise" and other forms thereof, such as the third person singular form "comprises" and the present participle form "comprising", are to be interpreted as open, inclusive, that is, "including, but not limited to". In the description of the specification, the terms "some embodiments", "exemplary embodiments", etc. are intended to indicate that the particular features, structures, materials or characteristics associated with the embodiment or example are included in at least one embodiment or example of the present disclosure. The schematic representation of the above terms does not necessarily refer to the same embodiment or example. In addition, the particular features, structures, materials or characteristics may be included in any one or more embodiments or examples in any appropriate manner.

[0212] Those skilled in the art can understand that the various numerical numbers such as first and second involved in the present disclosure are only used for distinction for convenience of description and are not used to limit the scope of the embodiments of the present disclosure, and also indicate the order of precedence.

[0213] At least one in the present disclosure can also be described as one or more, and a plurality can be two, three, four or more, which is not limited in the present disclosure. In the embodiments of the present disclosure, for a technical feature, the technical features in the technical feature are distinguished by "first", "second", "third", "A", "B", "C" and "D", etc., and there is no order of precedence or size between the technical features described by the "first", "second", "third", "A", "B", "C" and "D". "A and / or B" includes the following three combinations: only A, only B, and a combination of A and B.

[0214] Those of ordinary skill in the art will appreciate that the units and algorithm steps of each example described in conjunction with the embodiments disclosed herein can be implemented in electronic hardware, or a combination of computer software and electronic hardware. Whether these functions are performed in hardware or software depends on the specific application and design constraints of the technical solution. Professional and technical personnel can use different methods to implement the described functions for each specific application, but such implementation should not be considered to be beyond the scope of this disclosure.

[0215] Those skilled in the art can clearly understand that, for the convenience and brevity of description, the specific working processes of the systems, devices and units described above can refer to the corresponding processes in the aforementioned method embodiments and will not be repeated here.

[0216] The above is only a specific embodiment of the present disclosure, but the protection scope of the present disclosure is not limited thereto. Any person skilled in the art who is familiar with the technical field can easily think of changes or substitutions within the technical scope disclosed in the present disclosure, which should be included in the protection scope of the present disclosure. Therefore, the protection scope of the present disclosure should be based on the protection scope of the claims.

Claims

1. A communication method, characterized in that: The method is executed by a terminal device, and the method includes: Receive configuration information of a network device, the configuration information including time domain information of multiple physical downlink control channels PDCCH and M transmission configuration indication states TCI state for receiving the multiple PDCCHs, where M is an integer greater than 0; the configuration information also includes time domain resource information of multiple physical downlink shared channels PDSCH and N TCIstate for receiving the multiple PDSCHs, where N is an integer greater than 0.

2. The method according to claim 1, characterized in that The method further comprises: In a case where time domain resources occupied by at least one of the PDCCHs and at least one of the PDSCHs overlap, determining the TCI state for receiving the PDSCH.

3. The method according to claim 2, characterized in that The time domain resources occupied by the at least one PDCCH and the at least one PDSCH overlap, including: Time domain resources occupied by an i-th PDCCH among the multiple PDCCHs and an h-th PDSCH among the multiple PDSCHs overlap, where i is an integer greater than 0, and h is an integer greater than 0.

4. The method according to claim 3, characterized in that Time domain resources occupied by the i-th PDCCH among the multiple PDCCHs and the h-th PDSCH among the multiple PDSCHs overlap, including at least one of the following: The transmission mode of the multiple PDCCHs is an intra-slot TDM method, and the transmission mode of the multiple PDSCHs is an intra-slot TDM method; The transmission mode of the multiple PDCCHs is an intra-slot TDM method, and the transmission mode of the multiple PDSCHs is an inter-slot TDM method; The transmission mode of the multiple PDCCHs is an inter-slot TDM method, and the transmission mode of the multiple PDSCHs is an inter-slot TDM method; The transmission mode of the multiple PDCCHs is a single frequency network SFN or a frequency division multiplexing FDM method, and the transmission mode of the multiple PDSCHs is a SFN or a space division multiplexing SDM or FDM method; and The multiple PDCCHs are of SFN or FDM method, and the multiple PDSCHs are of time division multiplexing TDM method.

5. The method according to claim 3 or 4, characterized in that: The determining the TCIstate for receiving the PDSCH includes: The h-th PDSCH uses the TCI state corresponding to the ith PDCCH.

6. The method according to claim 5, characterized in that The M TCI states are identical to the N TCI states.

7. The method according to claim 6, characterized in that The value of N is 2, the multiple PDSCHs include two PDSCHs, and the PDSCHs other than the h-th PDSCH use a TCI state different from the TCI state corresponding to the i-th PDCCH among the N TCI states.

8. The method according to claim 6, characterized in that The value of N is 2, and the multiple PDSCHs include L PDSCHs, where L is an even number greater than 2; The TCI state for receiving the PDSCH is determined according to a mapping rule of the TCI state; wherein the mapping rule of the TCI state is cyclic mapping or sequential mapping.

9. The method according to claim 8, characterized in that The method further comprises: In the case where the mapping rule of the TCI state is cyclic Mapping, when h is an odd number, the odd-numbered PDSCH uses the TCI state corresponding to the i-th PDCCH, and the even-numbered PDSCH uses a different TCI state from the TCI state corresponding to the i-th PDCCH among the N TCI states; Or when h is an even number, the even-numbered PDSCH uses the TCI state corresponding to the ith PDCCH, and the odd-numbered PDSCH uses a TCI state different from the TCI state corresponding to the ith PDCCH among the N TCI states.

10. The method according to claim 8, characterized in that The method further comprises: In the case where the mapping rule of the TCI state is sequential Mapping, the 4j+1th and 4j+2th PDSCHs use the TCI state corresponding to the ith PDCCH, and the 4j+3th and 4j+4th PDSCHs use a TCI state different from the TCI state corresponding to the ith PDCCH among N TCIstates, where j is an integer greater than or equal to 0; Alternatively, the first L / 2 PDSCHs use the TCI state corresponding to the ith PDCCH, and the last L / 2 PDSCHs use a TCI state different from the TCI state corresponding to the ith PDCCH among the N TCI states.

11. The method according to claim 5, characterized in that The M TCI states are not one-to-one identical to the N TCI states.

12. The method according to claim 11, characterized in that The value of N is 2, the multiple PDSCHs include two PDSCHs, the first PDSCH uses a first TCI state among the N TCI states and the second PDSCH uses a second TCI state among the N TCI states; Alternatively, the first PDSCH uses the second TCI state among the N TCI states and the second PDSCH uses the first TCI state among the N TCI states.

13. The method according to claim 11, characterized in that The value of N is 2, and the multiple PDSCHs include L PDSCHs, where L is an even number greater than 2; Determine the TCI state for receiving the PDSCH according to a mapping rule of cyclic Mapping or sequential Mapping.

14. The method according to claim 13, characterized in that The method further comprises: According to the mapping rule of the cyclic Mapping, the odd-numbered PDSCH uses the first TCI state among the N TCI states, and the even-numbered PDSCH uses the second TCI state among the N TCI states; wherein the time domain resources occupied by the first PDSCH among the multiple PDSCHs that do not overlap remain unchanged or are postponed in sequence; Or the odd-numbered PDSCH uses the second TCI state among the N TCI states, and the even-numbered PDSCH uses the first TCI state among the N TCI states; wherein the time domain resources occupied by the first PDSCH among the multiple PDSCHs that do not overlap remain unchanged or are postponed sequentially.

15. The method according to claim 13, characterized in that The method further comprises: According to the mapping rule of the sequential Mapping, the 4k+1 and 4k+2 use the first TCI state, and the 4k+3 and 4k+4 use the second TCI state, where k is an integer greater than or equal to 0; wherein the time domain resources occupied by the first PDSCH among the multiple PDSCHs that do not overlap remain unchanged or are postponed in sequence; Alternatively, the first L / 2 PDSCHs use the TCI state corresponding to the first PDCCH, and the last L / 2 PDSCHs use a different TCI state among the N TCI states that corresponds to the second PDCCH; wherein the time domain resources occupied by the first PDSCH among the multiple PDSCHs that do not overlap remain unchanged or are postponed sequentially.

16. The method according to claim 2, characterized in that The determining, when time domain resources occupied by at least one of the PDCCHs and at least one of the PDSCHs overlap, the TCI state for receiving the PDSCH includes: The terminal device does not expect that the sth PDCCH and the (s+1)th PDCCH among the multiple PDCCHs overlap with the time domain resources occupied by one of the multiple PDSCHs, where s is an integer greater than 0.

17. A communication method, characterized in that: The method is performed by a network device, and the method comprises: Send configuration information of a terminal device, the configuration information including time domain information of multiple physical downlink control channels PDCCH and M transmission configuration indication states TCI state used to send the multiple PDCCHs, where M is an integer greater than 0; the configuration information also includes time domain resource information of multiple physical downlink shared channels PDSCH and N TCIstate used to send the multiple PDSCHs, where N is an integer greater than 0.

18. The method according to claim 17, characterized in that The method further includes: determining the TCI state for sending the PDSCH when time domain resources occupied by at least one of the PDCCHs and at least one of the PDSCHs overlap.

19. The method according to claim 18, characterized in that The time domain resources occupied by the at least one PDCCH and the at least one PDSCH overlap, including: Time domain resources occupied by an i-th PDCCH among the multiple PDCCHs and an h-th PDSCH among the multiple PDSCHs overlap, where i is an integer greater than 0, and h is an integer greater than 0.

20. The method according to claim 19, characterized in that Time domain resources occupied by the i-th PDCCH among the multiple PDCCHs and the h-th PDSCH among the multiple PDSCHs overlap, including at least one of the following: The transmission mode of the multiple PDCCHs is an intra-slot TDM method, and the transmission mode of the multiple PDSCHs is an intra-slot TDM method; The transmission mode of the multiple PDCCHs is an intra-slot TDM method, and the transmission mode of the multiple PDSCHs is an inter-slot TDM method; The transmission mode of the multiple PDCCHs is an inter-slot TDM method, and the transmission mode of the multiple PDSCHs is an inter-slot TDM method; The transmission mode of the multiple PDCCHs is a single frequency network SFN or a frequency division multiplexing FDM method, and the transmission mode of the multiple PDSCHs is a SFN or a space division multiplexing SDM or FDM method; The multiple PDCCHs are of SFN or FDM method, and the multiple PDSCHs are of time division multiplexing TDM method.

21. The method according to claim 19 or 20, characterized in that The determining the TCIstate for sending the PDSCH includes: The h-th PDSCH uses the TCI state corresponding to the ith PDCCH.

22. The method according to claim 21, characterized in that The M TCI states are identical to the N TCI states.

23. The method according to claim 22, characterized in that The value of N is 2, the multiple PDSCHs include two PDSCHs, and the PDSCHs other than the h-th PDSCH use a TCI state different from the TCI state corresponding to the i-th PDCCH among the N TCI states.

24. The method according to claim 22, characterized in that The value of N is 2, and the multiple PDSCHs include L PDSCHs, where L is an even number greater than 2; The TCI state for sending the PDSCH is determined according to a mapping rule of the TCI state; wherein the mapping rule of the TCI state is cyclic mapping or sequential mapping.

25. The method according to claim 24, characterized in that The method further comprises: When the mapping rule of the TCI state is cyclic Mapping, when h is an odd number, the odd-numbered PDSCH uses the TCI state corresponding to the i-th PDCCH, and the even-numbered PDSCH uses a different TCI state among the N TCI states that corresponds to the TCI state corresponding to the i-th PDCCH; or when h is an even number, the even-numbered PDSCH uses the TCI state corresponding to the i-th PDCCH, and the odd-numbered PDSCH uses a different TCI state among the N TCI states that corresponds to the TCI state corresponding to the i-th PDCCH.

26. The method according to claim 24, characterized in that The method further comprises: In the case where the mapping rule of the TCI state is sequential Mapping, the 4j+1th and 4j+2th PDSCHs use the TCI state corresponding to the ith PDCCH, and the 4j+3th and 4j+4th PDSCHs use a TCI state different from the TCI state corresponding to the ith PDCCH among N TCIstates, where j is an integer greater than or equal to 0; Alternatively, the first L / 2 PDSCHs use the TCI state corresponding to the ith PDCCH, and the last L / 2 PDSCHs use a TCI state different from the TCI state corresponding to the ith PDCCH among the N TCI states.

27. The method according to claim 21, characterized in that The M TCI states are not one-to-one identical to the N TCI states.

28. The method of claim 275, wherein: The value of N is 2, the multiple PDSCHs include two PDSCHs, the first PDSCH uses a first TCI state among the N TCI states and the second PDSCH uses a second TCI state among the N TCI states; Alternatively, the first PDSCH uses the second TCI state among the N TCI states and the second PDSCH uses the first TCI state among the N TCI states.

29. The method according to claim 27, characterized in that The value of N is 2, and the multiple PDSCHs include L PDSCHs, where L is an even number greater than 2; Determine the TCI state for sending the PDSCH according to a mapping rule of cyclic Mapping or sequential Mapping.

30. The method according to claim 29, characterized in that The method further comprises: According to the mapping rule of the cyclic Mapping, the odd-numbered PDSCH uses the first TCI state among the N TCI states, and the even-numbered PDSCH uses the second TCI state among the N TCI states; wherein the time domain resources occupied by the first PDSCH among the multiple PDSCHs that do not overlap remain unchanged or are postponed in sequence; Or the odd-numbered PDSCH uses the second TCI state among the N TCI states, and the even-numbered PDSCH uses the first TCI state among the N TCI states; wherein the time domain resources occupied by the first PDSCH among the multiple PDSCHs that do not overlap remain unchanged or are postponed sequentially.

31. The method according to claim 29, characterized in that The method further comprises: According to the mapping rule of the sequential Mapping, the 4k+1 and 4k+2 use the first TCI state, and the 4k+3 and 4k+4 use the second TCI state, where k is an integer greater than or equal to 0; wherein the time domain resources occupied by the first PDSCH among the multiple PDSCHs that do not overlap remain unchanged or are postponed in sequence; Alternatively, the first L / 2 PDSCHs use the TCI state corresponding to the first PDCCH, and the last L / 2 PDSCHs use a different TCI state among the N TCI states that corresponds to the second PDCCH; wherein the time domain resources occupied by the first PDSCH among the multiple PDSCHs that do not overlap remain unchanged or are postponed sequentially.

32. The method according to claim 18, characterized in that The determining, when time domain resources occupied by at least one of the PDCCHs and at least one of the PDSCHs overlap, the TCI state for sending the PDSCH includes: The terminal device does not expect that the sth PDCCH and the (s+1)th PDCCH among the multiple PDCCHs overlap with the time domain resources occupied by one of the multiple PDSCHs, where s is an integer greater than 0.

33. A communication device, characterized in that: include: A transceiver module is used to receive configuration information of a network device, wherein the configuration information includes time domain information of multiple physical downlink control channels PDCCH and M transmission configuration indication states TCI state for receiving the multiple PDCCHs, where M is an integer greater than 0; the configuration information also includes time domain resource information of multiple physical downlink shared channels PDSCH and N TCIstate for receiving the multiple PDSCHs, where N is an integer greater than 0.

34. A communication device, characterized in that: include: A transceiver module is used to send configuration information of a terminal device, wherein the configuration information includes time domain information of multiple physical downlink control channels PDCCH and M transmission configuration indication states TCI state used to send the multiple PDCCHs, where M is an integer greater than 0; the configuration information also includes time domain resource information of multiple physical downlink shared channels PDSCH and N TCIstate used to send the multiple PDSCHs, where N is an integer greater than 0.

35. A communication device, characterized in that: The device comprises a processor and a memory, wherein a computer program is stored in the memory, and the processor executes the computer program stored in the memory so that the device performs the method according to any one of claims 1 to 17.

36. A communication device, characterized in that: The device comprises a processor and a memory, wherein a computer program is stored in the memory, and the processor executes the computer program stored in the memory so that the device performs the method according to any one of claims 18 to 32.

37. A communication device, characterized in that: include: processor and interface circuits; The interface circuit is used to receive code instructions and transmit them to the processor; The processor is configured to run the code instructions to perform the method according to any one of claims 1 to 16.

38. A communication device, characterized in that: include: processor and interface circuits; The interface circuit is used to receive code instructions and transmit them to the processor; The processor is configured to execute the code instructions to perform the method according to any one of claims 18 to 32.

39. A computer-readable storage medium storing instructions, which, when executed, enable the method according to any one of claims 1 to 16 to be implemented.

40. A computer-readable storage medium storing instructions, which, when executed, enable the method according to any one of claims 18 to 32 to be implemented.

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