Communication method and device

Abstract

The invention discloses a communication method and device, and relates to the technical field of communication. In the method, a terminal may receive first configuration information. Wherein the first configuration information is used for configuring a plurality of pieces of reference signal indication information and a plurality of PUSCH opportunities; any reference signal indication information indicates at least one first reference signal, and a beam corresponding to the first reference signal comprises a fine beam. Subsequently, the terminal can generate a mapping relationship between multiple pieces of reference signal indication information and multiple PUSCH opportunities based on a preset rule, and determines and sends the PUSCH at the determined PUSCH opportunity through a beam corresponding to a first reference signal indicated by the target reference signal indication information according to the target reference signal indication information and the mapping relationship. Since the beam corresponding to the first reference signal comprises the fine beam, the PUSCH transmission rate can be improved, the time delay of the random access process can be reduced, and the success rate of cell switching of the terminal can be improved.

Description

Technical Field

[0001] The present application relates to the field of communication technology, and in particular to communication methods and devices. Background Art

[0002] In the terrestrial network, when the terminal detects that the signal quality of the current cell has deteriorated or the signal quality of the adjacent cell has changed, the terminal reports a signal quality measurement report to the currently connected network device. After receiving the measurement report, the network device selects a target cell for the terminal, thereby enabling the terminal to switch from the current cell to the target cell.

[0003] In satellite networks, due to the long distance between satellites and the ground, the round-trip signal transmission time can usually reach several milliseconds or even tens of milliseconds. If a cell switching solution based on existing technology is adopted, it will usually lead to a long switching delay. In addition, since the signal quality of the terminal is usually poor when switching, the long switching delay is very likely to cause the terminal switching failure. Therefore, the switching technology in the existing ground network cannot be directly used in the satellite network, or when used in the satellite network, it needs to be enhanced accordingly.

[0004] Random access channel less (RACH less) switching is implemented in long term evolution (LTE) and continues to be used in new radio (NR). Usually the goal of random access is to obtain the timing advance (TA) and uplink grant (Uplink grant) of the target cell. If the terminal can obtain relevant information in advance through other mechanisms, it can directly send the physical uplink share channel (PUSCH) to the target cell. Although this mechanism cannot achieve zero interruption delay, it can reduce the handover interruption delay to a certain extent.

[0005] However, in the above scheme, the terminal needs to determine the PUSCH beam based on the synchronization signal and physical broadcast channel block (SSB) beam, so the PUSCH transmission rate is low, the random access process duration is extended, and the probability of cell switching failure is high. Summary of the invention

[0006] The communication method and device provided in the present application can effectively reduce the delay of the random access process, thereby increasing the probability of successful cell switching of the terminal.

[0007] In order to achieve the above purpose, the present application adopts the following technical solutions:

[0008] In a first aspect, a communication method is provided, which can be executed by a terminal. The terminal here can refer to the terminal itself, or a processor, module, logical node, chip, or chip system that implements the method in the terminal.

[0009] The method includes: receiving first configuration information, the first configuration information is used to configure multiple reference signal indication information and multiple PUSCH opportunities; each reference signal indication information in the multiple reference signal indication information is used to indicate at least one first reference signal, and the beam corresponding to the first reference signal includes a fine beam; based on a preset rule, a mapping relationship between the multiple reference signal indication information and the multiple PUSCH opportunities is generated; determine the target reference signal indication information, and after determining the PUSCH opportunity corresponding to the target reference signal indication information from the multiple PUSCH opportunities according to the target reference signal indication information and the mapping relationship, send PUSCH at the PUSCH opportunity corresponding to the target reference signal indication information through the beam corresponding to the first reference signal indicated by the target reference signal indication information.

[0010] Based on the method provided in the first aspect above, the terminal can determine the PUSCH opportunity corresponding to the target reference signal indication information according to the target reference signal indication information and the above mapping relationship, and send PUSCH on the PUSCH opportunity through the beam corresponding to the first reference signal indicated by the target reference signal indication information. Because the beam corresponding to the first reference signal includes a thin beam, the thin beam has better directionality, so it can effectively improve the PUSCH transmission rate, reduce the delay of the random access process, and thus improve the probability of successful cell switching of the terminal.

[0011] In one possible implementation, multiple PUSCH opportunities are included in multiple PUSCH configuration authorization periods, and the first configuration information is also used to configure resources of multiple second reference signals and the number of reference signal indication information corresponding to the multiple PUSCH configuration authorization periods; the preset rule is: for multiple PUSCH opportunities in multiple PUSCH configuration authorization periods, obtain multiple sequentially arranged PUSCH configuration authorization periods according to the ascending order of resource indexes of multiple second reference signals and the ascending order of PUSCH configuration authorization period indexes; establish a mapping relationship between multiple reference signal indication information and multiple sequentially arranged PUSCH configuration authorization periods according to the order of obtaining the reference signal indication information and the number of reference signal indication information corresponding to each PUSCH configuration authorization period.

[0012] Based on the above possible implementations, the terminal can establish a mapping relationship between multiple reference signal indication information and multiple sequentially arranged PUSCH configuration authorization periods according to the order in which the resource indexes of the multiple second reference signals are increased, the order in which the PUSCH configuration authorization period index is increased, the order in which the reference signal indication information is obtained, and the number of reference signal indication information corresponding to each PUSCH configuration authorization period. In the above process, the terminal can generate the above mapping relationship without obtaining the number of reference signal indication information corresponding to each PUSCH opportunity. Therefore, the operation of the terminal can be simplified and the complexity can be reduced.

[0013] In one possible implementation, multiple PUSCH opportunities are included in multiple PUSCH configuration authorization periods, and the first configuration information is also used to configure the number of reference signal indication information corresponding to each PUSCH opportunity in the multiple PUSCH configuration authorization periods; the preset rule is: the terminal establishes a mapping relationship between multiple reference signal indication information and multiple PUSCH opportunities according to the number of reference signal indication information corresponding to each PUSCH opportunity and the order in which the reference signal indication information is acquired.

[0014] Based on the above possible implementation, the terminal establishes a mapping relationship between multiple reference signal indication information and multiple PUSCH opportunities according to the number of reference signal indication information corresponding to each PUSCH opportunity and the order in which the reference signal indication information is obtained. Therefore, in the mapping relationship, the number of reference signal indication information corresponding to a PUSCH opportunity can be configured as needed to improve flexibility.

[0015] In one possible implementation, the first configuration information is also used to configure resources for multiple second reference signals, and the resource indexes of the multiple second reference signals correspond to multiple PUSCH opportunities. The method also includes: sorting the multiple PUSCH opportunities in ascending order of the resource indexes of the multiple second reference signals and in ascending order of the PUSCH configuration authorization period index, and obtaining multiple PUSCH opportunities arranged in sequence. The multiple PUSCH opportunities arranged in sequence are used to generate a mapping relationship between multiple reference signal indication information and multiple PUSCH opportunities.

[0016] Based on the above possible implementation methods, the terminal can obtain multiple PUSCH opportunities arranged in sequence according to the ascending order of resource indexes of multiple second reference signals and the ascending order of PUSCH configuration authorization period indexes, so that the terminal can establish a mapping relationship between multiple reference signal indication information and multiple PUSCH opportunities based on the multiple PUSCH opportunities arranged in sequence, the number of reference signal indication information corresponding to each PUSCH opportunity, and the order of obtaining the reference signal indication information.

[0017] In a possible implementation, the first configuration information is also used to configure the index of each SSB in at least one SSB, and the number of reference signal indication information corresponding to each SSB; the preset rule is: the terminal establishes a mapping relationship between multiple reference signal indication information and multiple PUSCH opportunities according to the number of reference signal indication information corresponding to each SSB, according to the acquisition order of the reference signal indication information and the acquisition order of the SSB.

[0018] Based on the above possible implementation methods, the terminal can establish a mapping relationship between multiple reference signal indication information and multiple PUSCH opportunities according to the number of reference signal indication information corresponding to each SSB, the order of obtaining the reference signal indication information and the order of obtaining the SSB, so as to send PUSCH according to the mapping relationship.

[0019] In one possible implementation, the first configuration information is also used to configure resources for multiple second reference signals, and the resource indexes of the multiple second reference signals correspond to multiple PUSCH opportunities. The method also includes: sorting the multiple PUSCH opportunities according to the order of acquisition of at least one SSB, the ascending order of the resource indexes of the multiple second reference signals, and the ascending order of the PUSCH configuration authorization period index, and acquiring multiple PUSCH opportunities arranged in sequence. The multiple PUSCH opportunities arranged in sequence are used to generate a mapping relationship between multiple reference signal indication information and multiple PUSCH opportunities.

[0020] Based on the above possible implementation methods, the terminal can obtain multiple PUSCH opportunities arranged in sequence according to the order of acquisition of at least one SSB, the ascending order of resource indexes of multiple second reference signals, and the ascending order of PUSCH configuration authorization period indexes, so that the terminal establishes a mapping relationship between multiple reference signal indication information and multiple PUSCH opportunities based on the multiple PUSCH opportunities arranged in sequence, the number of reference signal indication information corresponding to each SSB, the order of acquisition of the reference signal indication information, and the order of acquisition of the SSB.

[0021] In a possible implementation manner, the first configuration information is further used to configure multiple PUSCH configuration grant periods.

[0022] Based on the possible implementation manner described above, the first configuration information configures multiple PUSCH configuration grant periods for the terminal, so that the terminal can map reference signal indication information to multiple PUSCH opportunities respectively included in the multiple PUSCH configuration grant periods.

[0023] In a possible implementation manner, the method further includes: determining multiple PUSCH configuration grant period indexes according to the number of multiple reference signal indication information and resource indexes of multiple second reference signals.

[0024] Based on the above possible implementation methods, since there is the following relationship between the number of multiple reference signal indication information, the number of second reference signals, the number of reference signal indication information corresponding to each PUSCH opportunity and the number of PUSCH configuration authorization cycles: the number of multiple reference signal indication information = the number of second reference signals * the number of reference signal indication information corresponding to each PUSCH opportunity * the number of PUSCH configuration authorization cycles; when the terminal obtains multiple second reference signals, multiple reference signal indication information, and the number of reference signal indication information corresponding to each PUSCH opportunity, the terminal can derive the number of PUSCH configuration authorization cycles according to the above relationship.

[0025] In a possible implementation manner, one reference signal indication information among the multiple reference signal indication information corresponds to at least one PUSCH opportunity among the multiple PUSCH opportunities.

[0026] Based on the above possible implementation manner, one reference signal indication information corresponds to at least one PUSCH opportunity, which can ensure that the reference signal indication information can be fully allocated to the PUSCH opportunity and fully utilize the first reference signal resource corresponding to the reference signal indication information.

[0027] In a possible implementation manner, different PUSCH opportunities among the multiple PUSCH opportunities correspond to the same amount of reference signal indication information.

[0028] Based on the above possible implementation manner, different PUSCH opportunities correspond to the same amount of reference signal indication information. In this way, reference signal indication information is allocated to PUSCH opportunities, which makes configuration simpler.

[0029] In a possible implementation manner, different PUSCH opportunities among the multiple PUSCH opportunities correspond to different amounts of reference signal indication information.

[0030] Based on the above possible implementation methods, different PUSCH opportunities correspond to different amounts of reference signal indication information. By allocating reference signal indication information to PUSCH opportunities in this way, different PUSCH opportunities can correspond to the first reference signal indicated by the reference signal indication information more flexibly.

[0031] In a possible implementation manner, the signal quality of the first reference signal indicated by the target reference signal indication information is the best, or the signal quality of the first reference signal indicated by the target reference signal indication information is greater than a first threshold.

[0032] Based on the above possible implementation, the terminal selects the first reference signal with the best signal quality from the first reference signals indicated by the reference signal indication information, determines the reference signal indication information according to the first reference signal with the best signal quality, and further determines that the PUSCH corresponding to the reference signal indication information is used to send the PUSCH. Alternatively, the signal quality of the first reference signal indicated by the target reference signal indication information is greater than the first threshold value, thereby ensuring the signal quality of the reference signal corresponding to the PUSCH timing to be sent by the terminal.

[0033] In a possible implementation manner, the reference signal indication information includes at least one of a TCI state or a reference signal identifier ID.

[0034] Based on the above possible implementation manners, the first reference signal may be indicated by the TCI state or the reference signal identifier ID, thereby improving the flexibility and diversity of indicating the first reference signal.

[0035] In a second aspect, a communication method is provided, which can be performed by a first network device. The first network device here can refer to the first network device itself, or a processor, module, logical node, chip, or chip system that implements the method in the first network device.

[0036] The method includes: a first network device sends first configuration information, the first configuration information is used to configure multiple first reference signal indication information and multiple physical uplink shared channel PUSCH opportunities; each first reference signal indication information in the multiple first reference signal indication information is used to indicate at least one first reference signal, and the beam corresponding to the first reference signal includes a fine beam.

[0037] Based on the method provided in the second aspect above, the first network device can configure multiple first reference signal indication information and multiple PUSCH opportunities, so that the device receiving the first configuration information, such as a terminal, determines the mapping relationship between the multiple reference signal indication information and the multiple PUSCH opportunities based on the configuration, and then determines the target PUSCH opportunity corresponding to the target reference signal indication information according to the target reference signal indication information and the mapping relationship, and sends PUSCH on the target PUSCH opportunity through the beam corresponding to the first reference signal indicated by the target reference signal indication information. Because the beam corresponding to the above-mentioned first reference signal includes a fine beam, the fine beam has better directivity, so it can effectively improve the PUSCH transmission rate, reduce the delay of the random access process, and thus improve the probability of successful cell switching of the terminal.

[0038] In one possible implementation, the first configuration information is also used to configure at least one of the following: resources of multiple second reference signals, multiple PUSCH configuration authorization periods, the number of reference signal indication information corresponding to multiple PUSCH configuration authorization periods, the number of reference signal indication information corresponding to each PUSCH opportunity in multiple PUSCH configuration authorization periods, the index of each SSB in at least one synchronization signal and a physical layer broadcast channel block SSB, or the number of reference signal indication information corresponding to each SSB, and one PUSCH configuration authorization period among the multiple PUSCH configuration authorization periods includes at least one PUSCH opportunity among the multiple PUSCH opportunities.

[0039] Based on the above possible implementations, the first network device may also configure the above information so that the device receiving the configuration generates a mapping relationship between multiple reference signal indication information and multiple PUSCH opportunities based on the above information. For example, the device may generate the mapping relationship based on the resource indexes of multiple second reference signals and the number of reference signal indication information corresponding to multiple PUSCH configuration authorization periods; or, the device may generate the mapping relationship based on the number of reference signal indication information corresponding to each PUSCH opportunity in multiple PUSCH configuration authorization periods; or, the device may generate the mapping relationship based on the index of each SSB in at least one SSB and the number of reference signal indication information corresponding to each SSB.

[0040] In a possible implementation manner, the reference signal indication information includes at least one of a TCI state or a reference signal identifier ID.

[0041] Based on the above possible implementation manners, the first reference signal may be indicated by the TCI state or the reference signal identifier ID, thereby improving the flexibility and diversity of indicating the first reference signal.

[0042] In a possible implementation manner, the method further includes: receiving the PUSCH at multiple PUSCH opportunities.

[0043] Based on the possible implementation manner described above, it is possible to receive a PUSCH from a device (such as a terminal) that has acquired the first configuration information.

[0044] In a third aspect, a communication device is provided for implementing the above method. The communication device includes a module, unit, or means corresponding to the above method, and the module, unit, or means can be implemented by hardware, software, or by hardware executing corresponding software. The hardware or software includes one or more modules or units corresponding to the above functions.

[0045] In conjunction with the third aspect, in a possible implementation, the communication device may include a processing module and an interface module. The processing module may be used to implement the processing functions in any of the above aspects and any possible implementations thereof. The processing module may be, for example, a processor. The interface module, which may also be referred to as an interface unit, is used to implement the sending and / or receiving functions in any of the above aspects and any possible implementations thereof. The interface module may be composed of an interface circuit, a transceiver, a transceiver or a communication interface.

[0046] In combination with the third aspect above, in a possible implementation, the interface module includes a sending module and a receiving module, which are respectively used to implement the sending and receiving functions in any of the above aspects and any possible implementations thereof.

[0047] In a fourth aspect, a communication device is provided, comprising: a processor; the processor is used to couple with a memory, and after reading an instruction in the memory, execute the method described in any one of the above aspects according to the instruction.

[0048] In conjunction with the fourth aspect, in a possible implementation, the communication device further includes a memory, the memory being used to store program instructions and data. Optionally, the memory is integrated with the processor; or, the memory is independent of the processor.

[0049] In conjunction with the fourth aspect above, in a possible implementation, the communication device is a chip or a chip system. Optionally, when the communication device is a chip system, it can be composed of a chip, or it can include a chip and other discrete devices.

[0050] In a fifth aspect, a communication device is provided, comprising: a processor and an interface circuit; the interface circuit is used to receive a computer program or instruction and transmit it to the processor; the processor is used to execute the computer program or instruction so that the communication device executes the method described in any of the above aspects.

[0051] In conjunction with the fifth aspect, in a possible implementation, the communication device is a chip or a chip system. Optionally, when the communication device is a chip system, it can be composed of a chip, or it can include a chip and other discrete devices.

[0052] In a sixth aspect, a computer-readable storage medium is provided, wherein instructions are stored in the computer-readable storage medium, and when the computer-readable storage medium is run on a computer, the computer can execute the method described in any of the above aspects.

[0053] In a seventh aspect, a computer program product comprising instructions is provided, which, when executed on a computer, enables the computer to execute the method described in any one of the above aspects.

[0054] In an eighth aspect, a communication system is provided, which includes a terminal for executing the method described in the first aspect and a first network device for executing the method described in the second aspect.

[0055] Among them, the technical effects brought about by any possible implementation method in the third to eighth aspects can refer to the technical effects brought about by any aspect in the first to second aspects or different possible implementation methods in any aspect, and will not be repeated here.

[0056] It can be understood that, under the premise that the solutions are not contradictory, the solutions in each aspect can be combined. BRIEF DESCRIPTION OF THE DRAWINGS

[0057] Figure 1 A schematic diagram of the communication system architecture provided for this application;

[0058] Figure 2A Schematic diagram of the communication network provided for this application Figure 1 ;

[0059] Figure 2B Schematic diagram 2 of the communication network provided for this application;

[0060] Figure 2C Schematic diagram of the communication network provided for this application Figure 3 ;

[0061] Figure 3 A schematic diagram of the hardware structure of the communication device provided in this application;

[0062] Figure 4 A flow chart of the communication method provided for this application;

[0063] Figure 5 Schematic diagram of multiple transmission configuration indicator states (TCI states) and PUSCH timing mapping provided in this application Figure 1 ;

[0064] Figure 6 Schematic diagram 2 of mapping multiple TCI states and PUSCH opportunities provided for this application;

[0065] Figure 7 Schematic diagram of multiple TCI states and PUSCH timing mapping provided in this application Figure 3 ;

[0066] Figure 8 Schematic diagram of multiple TCI states and PUSCH timing mapping provided in this application Figure 4 ;

[0067] Fig. 9 Schematic diagram of multiple TCI states and PUSCH timing mapping provided in this application Figure 5 ;

[0068] Fig.10 A schematic diagram of the structure of the communication device provided in this application. DETAILED DESCRIPTION

[0069] Before introducing the technical solution of the present application, the relevant technical terms involved in the present application are explained. It is understandable that these explanations are intended to make the present application easier to understand and should not be regarded as limiting the scope of protection claimed by the present application.

[0070] 1. Terminal

[0071] The terminals in this application, for example Figure 1The terminals 101 to 104 in the figure are devices with wireless transceiver functions. The terminal can be deployed on land, including indoors, outdoors, handheld or vehicle-mounted; it can also be deployed on the water (such as ships, etc.); it can also be deployed in the air (such as airplanes, balloons and satellites, etc.). The terminal can also be called a terminal device, and the terminal device can be a user equipment (UE), a mobile station (MS), a mobile terminal (MT), etc., or a device for providing voice or data connectivity to users. Among them, the terminal includes a handheld device with wireless communication function, a vehicle-mounted device (for example, a car, a bicycle, an electric car, an airplane, a ship, a train, a high-speed rail, etc.), a wearable device (such as a smart watch, a smart bracelet, a pedometer, etc.) or a computing device. Exemplarily, the terminal can be a mobile phone, a tablet computer, a laptop computer, a PDA, a mobile internet device (MID), a satellite terminal or a computer with wireless transceiver function. The terminal may also be a virtual reality (VR) terminal device, an augmented reality (AR) terminal device, a wireless modem, a smart point of sale (POS) machine, a customer-premises equipment (CPE), an intelligent robot, a mechanical arm, a workshop device, a smart home device (e.g., a refrigerator, a television, an air conditioner, an electric meter, etc.), a wireless terminal in industrial control, a wireless terminal in unmanned driving, a wireless terminal in telemedicine, a wireless terminal in a smart grid, a wireless terminal in transportation safety, a wireless terminal in a smart city, a wireless terminal in a smart home, a vehicle-mounted terminal, a roadside unit (RSU) with a terminal function, or a flight device (e.g., an intelligent robot, a hot air balloon, a drone, an airplane), etc. The terminal may also be other devices with a terminal function, for example, the terminal may also be a device that functions as a terminal in device-to-device (D2D) communication.

[0072] As an example but not limitation, in the present application, the terminal may be a wearable device. Wearable devices may also be referred to as wearable smart devices, which are a general term for wearable devices that are intelligently designed and developed using wearable technology for daily wear, such as glasses, gloves, watches, clothing, and shoes. A wearable device is a portable device that is worn directly on the body or integrated into the user's clothes or accessories. For example, a wearable device is not only a hardware device, but also a device that realizes powerful functions through software support, data interaction, and cloud interaction. Broadly speaking, wearable smart devices include devices that are fully functional, large in size, and can realize complete or partial functions without relying on smartphones, such as smart watches or smart glasses, as well as devices that only focus on a certain type of application function and need to be used in conjunction with other devices such as smartphones, such as various types of smart bracelets and smart jewelry for vital sign monitoring.

[0073] In the present application, the terminal may be a terminal in the Internet of Things (IoT) system. IoT is an important part of the future development of information technology. Its main technical feature is to connect objects to the network through communication technology, thereby realizing an intelligent network of human-machine interconnection and object-to-object interconnection. The terminal in the present application may be a terminal in machine type communication (MTC). The terminal of the present application may be a vehicle-mounted module, a vehicle-mounted module, a vehicle-mounted component, a vehicle-mounted chip or a vehicle-mounted unit built into a vehicle as one or more components or units. The vehicle may implement the method of the present application through the built-in vehicle-mounted module, vehicle-mounted module, vehicle-mounted component, vehicle-mounted chip or vehicle-mounted unit. The terminal of the present application may be a vehicle, such as a car. Therefore, the present application may be applied to Internet of Vehicles, such as vehicle to everything (V2X), long term evolution vehicle (LTE-V), vehicle to vehicle (V2V), etc.

[0074] In the present application, the form of the terminal is not limited. The device for realizing the function of the terminal can be a terminal; or a device that can support the terminal to realize the function, such as a chip system. The device can be installed in the terminal or used in conjunction with the terminal.

[0075] 2. Network equipment

[0076] The network devices in this application are, for example: Figure 1The network device 101 in the present application may be a device with wireless transceiver function, which can help the terminal to achieve wireless access. The network device in the present application may also be referred to as a node in a radio access network (RAN), a RAN node or an access network device. The network equipment includes, but is not limited to, evolved base stations (NodeB or eNB or e-NodeB, evolutional Node B) in LTE, evolved base stations (next generation eNB, ng-eNB) in next generation LTE, base stations (gNodeB or gNB) in NR, transmitting points (transmitting points, TP) or transmission receiving points (transmission reception points / transmission reception points, TRP), base stations subsequently evolved by the third generation partnership project (3GPP), next generation base stations (next generation NodeB, gNB), next generation base stations in sixth generation (6G) mobile communication systems, base stations in future mobile communication systems, satellites, access nodes in wireless fidelity (WiFi) systems, wireless relay nodes, wireless backhaul nodes, integrated access and backhaul (IAB) nodes, and network equipment in mobile switching center non-terrestrial network (NTN) communication systems, that is, network equipment that can be deployed on high-altitude platforms or satellites, etc. The base station can be: a macro base station, a micro base station, a pico base station, a small station, a relay station, or a balloon station, etc. Multiple base stations can support the network of the same technology mentioned above, or they can support the network of different technologies mentioned above. The base station can include one or more co-sited or non-co-sited TRPs. The network device can also be a device that acts as a base station in D2D communication, Internet of Vehicles communication, drone communication, and machine communication. The network device can also be a wireless controller in a cloud radio access network (CRAN) scenario. The network device can also be a centralized unit (CU), a distributed unit (DU), a CU-control plane (CP), a CU-user plane (UP), a radio unit (RU), a road side unit (RSU) with base station function, a wired access gateway or a core network element, etc.The network device may also be a server, a wearable device, a machine communication device or an in-vehicle device, etc. For example, the network device in the V2X technology may be an RSU. The following description takes the network device as a base station as an example. The multiple network devices may be base stations of the same type or different types. The base station may communicate with the terminal or communicate with the terminal through a relay station. The terminal may communicate with multiple base stations of different technologies. For example, the terminal may communicate with a base station supporting an LTE network or a base station supporting a fifth generation (5th generation, 5G) network, and may also support dual connections with base stations of an LTE network and base stations of a 5G network.

[0077] It is understandable that in some scenarios, the roles of network devices and terminals are relative. For example, a helicopter or drone that is usually configured as a terminal can also be configured as a mobile base station, and the device that accesses the RAN via a helicopter or drone is configured as a terminal.

[0078] In this application, the form of the network device is not limited. The device for realizing the function of the network device can be a network device; it can also be a device that can support the network device to realize the function, such as a chip system. The device can be installed in the network device or used in combination with the network device.

[0079] 3. Satellite Communications

[0080] Compared with terrestrial communications, satellite communications have been widely used in aviation, energy and other fields due to their wide coverage, no geographical restrictions, and high reliability. At present, satellite communications, as an extremely important communication scenario, have been introduced into 5G by 3GPP under the name of non-terrestrial network (NTN). Satellite communications can provide communication services for areas where terrestrial networks are insufficient or cannot be covered, as well as provide stable emergency communications in the event of natural disasters or large-scale events. It can also provide high-quality communication services for users on vehicles such as trains, ships and airplanes, and can provide specialized services for government and enterprise users to meet specific business needs.

[0081] 4. Reference signal

[0082] This application takes NR as an example to illustrate the reference signal: the reference signal includes SSB, channel state information-reference signal (CSI-RS), sounding reference signal (SRS), positioning reference signal (PRS) or demodulation reference signal (DMRS), etc. Among them, SSB, CSI-RS and PRS are downlink reference signals, SRS is an uplink reference signal, and DMRS is an uplink or downlink reference signal. The following is an explanation of each reference signal.

[0083] SSB consists of three parts: primary synchronization signals (PSS), secondary synchronization signals (SSS), and physical broadcast channel (PBCH).

[0084] SRS is used to detect the channel status in the transmission direction from the terminal to the network device.

[0085] CSI-RS is used for functions such as channel detection or beam management. Specifically, it can be used to obtain shaping weights of beams on the terminal and base station sides, and to support beam measurement during beam management.

[0086] PRS is used by the terminal to obtain the terminal location information. The terminal reports the location information to the network device, which can assist the network in locating the terminal device.

[0087] Reference signals such as SSB, SRS, CSI-RS or PRS can be used by the receiving end to determine the beam. Taking the network device as the transmitting end and the terminal as the receiving end as an example, due to the symmetry between uplink and downlink, the terminal can determine the beam of the uplink signal to be sent based on the beam of the downlink reference signal such as SSB, CSI-RS or PRS received. Taking the network device as the receiving end and the terminal as the transmitting end as an example, the network device can determine the beam of the signal to be sent based on the beam of the uplink reference signal such as SRS received from the terminal.

[0088] DMRS is used for channel estimation and signal demodulation. DMRS is a known physical signal that is interspersed in the time-frequency resources of the control channel or data channel and sent together with the physical signal. In this way, the receiving end can obtain channel characteristics based on the DMRS signal, and then perform channel estimation and signal demodulation.

[0089] 5. No random access channel (RACH less) switching

[0090] The goal of random access is to obtain the TA and uplink grant (UL grant) of the target cell. If the terminal can obtain relevant information in advance through other mechanisms, it can directly send PUSCH to the target cell. Although this mechanism cannot achieve zero interruption delay, it can reduce the switching interruption delay to a certain extent. Therefore, RACH less switching is proposed.

[0091] For NTN, since the satellite's ephemeris can accurately calculate, predict, depict, and track the time, position, speed, and other operating states of satellites and flying objects, the TA information of the target cell to be switched can be obtained through the ephemeris information. There are currently two ways to obtain the uplink authorization of PUSCH, one is the configured grant, and the other is the dynamic grant. Among them, the dynamic grant is a way for the terminal to obtain the uplink authorization by monitoring the physical downlink control channel (PDCCH) from the target cell. The configured authorization is indicated to the terminal by the network device through the radio resource control (RRC) signaling of the uplink authorization configuration of PUSCH, that is, the network device pre-allocates the time-frequency resources of PUSCH to the terminal, and the terminal can use the time-frequency resources to transmit PUSCH.

[0092] The network device may configure the terminal to perform RACH less switching. For example, the network device configures the terminal to perform RACH less switching by carrying a RACH less switching (such as RACH-LessHO) field through RRC signaling. Exemplarily, the RACHless switching field includes the following content:

[0093] (1) N of the target primary timing advance group (PTAG) TA value:

[0094] Target PTAG N TA Indicates that the terminal should be used for the handover target, and the targetNTA field indicates N TA , N TA Indicates the value of the timing adjustment. Wherein, PTAG represents a set of at least one primary cell with the same timing adjustment.

[0095] (2) Configured grant (CG) of the target cell:

[0096] CG is used to configure the terminal to obtain PUSCH configuration authorization, which is indicated by the field ulGrantConfig.

[0097] (3) DMRS port set for SSB to PUSCH mapping:

[0098] The DMRS port set for SSB to PUSCH mapping is indicated by the field ntn-DMRS-Ports. ntn-DMRS-Ports can be a bitmap, where the first bit (i.e., the leftmost or most significant bit) of ntn-DMRS-Ports corresponds to DMRS port 0, the second most significant bit corresponds to DMRS port 1, and so on. Among them, any bit is set to 1, exemplarily, indicating that the DMRS port is used to map the PUSCH signal.

[0099] (4) Number of DMRS sequences mapped from SSB to PUSCH:

[0100] The number of DMRS sequences mapped from SSB to PUSCH can be indicated by the field ntn-NrofDMRS-Sequences.

[0101] (5) Number of SSBs corresponding to the pre-allocated uplink grant PUSCH:

[0102] The number of SSBs corresponding to each pre-allocated uplink grant PUSCH can be indicated by the field ntn-SSB-PerCG-PUSCH, which is used by the network device or terminal to determine the PUSCH resources corresponding to the SSB, and then determine the PUSCH through the SSB beam. For example, if the value of this field is 1, it means that each pre-allocated uplink grant PUSCH corresponds to 1 SSB; if the value of this field is 2, it means that each pre-allocated uplink grant PUSCH corresponds to 2 SSBs, and so on.

[0103] (6) Reference signal receiving power (RSRP) threshold for SSB selection:

[0104] The RSRP threshold selected by SSB can be configured through the field ntn-RSRP-ThresholdSSB, which is used to configure the pre-allocated uplink grant.

[0105] 6. PUSCH resource configuration for small data transmission (SDT)

[0106] According to the resources configured by the network side, the terminal sends uplink data to the network side in idle state or inactive state. When the uplink authorization is obtained by the aforementioned configuration authorization, the PUSCH transmission in the SDT scenario is configured by the following fields:

[0107] (1) Index of multiple SSBs and PUSCH occasions:

[0108] The network device provides the terminal with multiple SSB and PUSCH opportunity indexes, which can be indicated by the field sdt-SSB-Subset, that is, Used to map to multiple valid PUSCH opportunities for PUSCH transmission within a PUSCH association period. It can be understood that the terminal determines the PUSCH opportunity according to the SSB and the index of the PUSCH opportunity, and determines the beam of the uplink signal according to the beam of the downlink reference signal.

[0109] Among them, PUSCH opportunity refers to the time-frequency resource for transmitting PUSCH pre-allocated by the network device for the terminal, and the PUSCH opportunity is associated with the DMRS resource, where the DMRS resource includes the DMRS port and the DMRS transmission resource. The configuration period refers to multiple PUSCH opportunities, and these PUSCH opportunities correspond to different DMRS resources. The association period refers to the number of PUSCH configuration periods.

[0110] In an association cycle, the terminal starts from the subframe with subframe number (SFN) 0 and sets the SSB index to Mapped to a valid PUSCH opportunity. According to the PUSCH configuration period set provided by the associated period in Table 1, the value of the PUSCH configuration period is set to the minimum value that can be obtained in the set, so that the SSB index Mapped to a valid PUSCH opportunity and associated DMRS resource at least once within the association period. For example, when the PUSCH association period is {1,2}, it means that the association period corresponds to 1 PUSCH configuration period and 2 PUSCH configuration periods, and the PUSCH configuration period can be 5ms. It can be understood that a valid PUSCH opportunity refers to a period with an SSB index of The terminal uses the PUSCH opportunity to transmit PUSCH. Invalid PUSCH opportunity refers to the PUSCH opportunity that is not associated with the SSB index. The associated PUSCH opportunity and the associated DMRS resource, the PUSCH opportunity is not used for the terminal to perform PUSCH transmission.

[0111] Table 1

[0112]

[0113]

[0114] If the network device does not send the sdt-SSB-Subset field to the terminal, the terminal can determine the value of ssb-PositionsInBurst in SIB1 of the system information block (SIB).

[0115] (2) Maximum number of PUSCH retransmissions:

[0116] The maximum number of PUSCH retransmissions can be indicated by the field numberOfRepetitions, which is used to extend the number of PUSCH retransmissions to enhance coverage. If the maximum number of PUSCH retransmissions indicated by this field is greater than 1, all repeated PUSCH transmissions are mapped to the same SSB index. Furthermore, if at least one of the repeated PUSCH opportunities is invalid, all repeated PUSCH opportunities are invalid.

[0117] The implementation methods of the present application are described in detail below with reference to the accompanying drawings.

[0118] The method provided in this application can be used in various communication systems. For example, the communication system can be an LTE system, a 5G communication system, a wireless fidelity (WiFi) system, a 3GPP-related communication system, a future evolution communication system (such as: a sixth generation (6th generation, 6G) communication system, etc.), or a system integrating multiple systems, etc., without limitation. Among them, 5G can also be called NR. Figure 1 The method provided in the present application is described by taking the communication system 10 as an example. Figure 1 It is only a schematic diagram and does not constitute a limitation on the applicable scenarios of the technical solution provided in this application.

[0119] like Figure 1 , which is a schematic diagram of the architecture of the communication system 10 provided in the present application. Figure 1 In the embodiment, the communication system 10 may include one or more network devices 101 (only one is shown) and terminals 102-104 that can communicate with the network device 101. The introduction of the network devices and terminals can refer to the explanation of the technical terms involved in this application in the above text, which will not be repeated here.

[0120] It is understood that the communication system 10 can be applied to a terrestrial network or a non-terrestrial network. For example, the communication system 10 can be applied to Figure 2A , Figure 2B or Figure 2C The network shown.

[0121] Figure 2A The network shown includes a satellite 201, a base station 202, a terminal 203, a ground station 204 and a core network 205. The core network 205 may include an access and mobility management function (AMF) network element, a location management function (LMF) network element, a user plane function (UPF) network element and a data network. The core network 205 may communicate with the base station 202 via a next generation (NG) interface, the base station 202 may communicate with the ground station 204 via an NG interface, the ground station 204 may communicate with the satellite 201 via an NG interface, and the satellite 201 may communicate with the terminal 203 via an air interface. It can be understood that the network device 101 in the communication system 10 is Figure 2B The corresponding network element or device in the network shown may be a base station 202; a terminal (such as terminal 102, terminal 103 or terminal 104) in the communication system 10 Figure 2B The corresponding network element or device in the network shown may be the terminal 203. That is, Figure 2A In the embodiment, the terminal 203 and the base station 202 cannot communicate directly, but information can be forwarded through the ground station 204 and the satellite 201.

[0122] Figure 2B The network shown includes a satellite 211, a terminal 212, a ground station 213, and a core network 214. The core network 214 may include an AMF network element, an LMF network element, a UPF network element, and a data network. The core network 214 may communicate with the ground station 213 via a next generation (NG) interface, the ground station 213 may communicate with the satellite 213 via an NG interface, and the satellite 211 may communicate with the terminal 212 via an air interface. It can be understood that the network device 101 in the communication system 10 is Figure 2A The corresponding network element or device in the network shown may be a satellite 211; a terminal (such as terminal 102, terminal 103 or terminal 104) in the communication system 10 Figure 2A The corresponding network element or device in the network shown may be the terminal 212 .

[0123] Figure 2CThe network shown includes satellite 221, satellite 222, terminal 223, terminal 224, ground station 225, base station 226 and core network 227. The core network 227 may include AMF network elements, LMF network elements, UPF network elements and data networks. The core network 227 may communicate with base station 226 via an NG interface, base station 226 may communicate with ground station 225, ground station 225 may communicate with satellite 221 and satellite 222 via an NG interface, satellite 221 may communicate with terminal 223 via an air interface, and satellite 222 may communicate with terminal 224 via an air interface. It can be understood that the network device 101 in the communication system 10 is Figure 2B The corresponding network element or device in the network shown may be a base station 226; a terminal (such as terminal 102, terminal 103 or terminal 104) in the communication system 10 Figure 2B The corresponding network element or device in the network shown may be terminal 223 or terminal 224. Figure 2C In the embodiment, the terminal 223 and the base station 226 cannot communicate directly, but can forward information through the ground station 225 and the satellite 221; the terminal 224 and the base station 226 cannot communicate directly, but can forward information through the ground station 225 and the satellite 222.

[0124] Below Figure 2A , Figure 2B and Figure 2C Explain the network elements or interfaces involved.

[0125] The core network (such as core network 205, core network 216 or core network 227) can be a 5G core network, which is mainly used for user access control, mobility management, session management, user security authentication, billing and other services. The 5G core network may include multiple network elements, for example, control plane network elements such as AMF network elements and LMF network elements, and user plane network elements such as UPF network elements. Among them, the AMF network element can be used for user access management, security authentication, and mobility management; the LMF network element can be used for terminal positioning service requests to manage and control, and process positioning-related information; the UPF network element can be used to manage the transmission of user plane data, as well as traffic statistics, etc.

[0126] A ground station (such as ground station 204, ground station 213 or ground station 225) may be responsible for forwarding signaling and service data between a satellite and a core network, or for forwarding signaling and service data between a satellite and a base station. For example, ground station 204 is used to forward signaling and service data between satellite 201 and base station 202; ground station 213 is used to forward signaling and service data between satellite 211 and core network 214.

[0127] The air interface is the wireless link between the terminal and the network device. Figure 2AIn the example, the air interface is the wireless link between the terminal 203 and the satellite 201.

[0128] The Xn interface is an interface between network devices and is used for signaling interaction between network devices. For example, Figure 2C The Xn interface shown is the interface between satellite 221 and satellite 222.

[0129] The NG interface is the interface between the network equipment and the ground station, or the interface between the network equipment and the core network, and is used for signaling such as the non-access stratum (NAS) of the core network equipment, as well as for service data. For example, Figure 2A The NG interface shown is an interface between the satellite 201 and the ground station 204, or an interface between the ground station 204 and the base station 202, or an interface between the base station 202 and the core network.

[0130] Understandably, if Figure 2A or Figure 2B or Figure 2C The present invention is applied to the fourth generation mobile communication technology (4th generation, 4G) communication system, Xn can be replaced by X2, and NG can be replaced by S1. The application to other communication systems will not be described in detail.

[0131] The relevant functions of the network device 101, terminal 102, terminal 103 or terminal 104 involved in the present application can be implemented by one device, or by multiple devices together, or by one or more functional modules within a device, or can be one or more chips, or a system on chip (system on chip, SOC) or a chip system. The chip system can be composed of chips, or can include chips and other discrete devices, and the embodiments of the present application do not make specific limitations on this.

[0132] It is understandable that the above functions can be network elements in hardware devices, software functions running on dedicated hardware, or a combination of hardware and software, or virtualized functions instantiated on a platform (e.g., a cloud platform).

[0133] In specific implementation, this application Figure 1 The terminal or network equipment can use Figure 3 The structure shown, or including Figure 3 Parts shown. Figure 3 The figure shows a hardware structure diagram of a communication device applicable to the present application. The communication device 30 includes at least one processor 301 and at least one communication interface 304, which are used to implement the method provided by the present application. The communication device 30 may also include a communication line 302 and a memory 303.

[0134] The processor 301 may be a general-purpose central processing unit (CPU), a microprocessor, an application-specific integrated circuit (ASIC), or one or more integrated circuits for controlling the execution of the program of the present application.

[0135] The communication link 302 may include a path to transmit information between the above-mentioned components, such as a bus.

[0136] The communication interface 304 is used to communicate with other devices or communication networks. The communication interface 304 can be any transceiver-like device, such as an Ethernet interface, a radio access network (RAN) interface, a wireless local area network (WLAN) interface, a transceiver, a pin, a bus, an interface circuit, or a transceiver circuit.

[0137] The memory 303 may be a read-only memory (ROM) or other types of static storage devices that can store static information and instructions, a random access memory (RAM) or other types of dynamic storage devices that can store information and instructions, or an electrically erasable programmable read-only memory (EEPROM), a compact disc read-only memory (CD-ROM) or other optical disc storage, optical disc storage (including compressed optical disc, laser disc, optical disc, digital versatile disc, Blu-ray disc, etc.), a magnetic disk storage medium or other magnetic storage device, or any other medium that can be used to carry or store the desired program code in the form of instructions or data structures and can be accessed by a computer, but is not limited thereto. The memory may be independent and coupled to the processor 301 via a communication line 302. The memory 303 may also be integrated with the processor 301. The memory provided in the present application may generally be non-volatile.

[0138] Among them, the memory 303 is used to store the computer execution instructions involved in executing the solution provided by this application, and the execution is controlled by the processor 301. The processor 301 is used to execute the computer execution instructions stored in the memory 303, so as to implement the method provided by this application. Alternatively, optionally, in this application, the processor 301 may also perform the processing-related functions in the method provided below in this application, and the communication interface 304 is responsible for communicating with other devices or communication networks, which is not specifically limited in this application.

[0139] Optionally, the computer-executable instructions in the present application may also be referred to as application code, which is not specifically limited in the present application.

[0140] The coupling in this application is an indirect coupling or communication connection between devices, units or modules, which can be electrical, mechanical or other forms, and is used for information exchange between devices, units or modules.

[0141] As an embodiment, the processor 301 may include one or more CPUs, such as Figure 3 CPU0 and CPU1 in.

[0142] As an embodiment, the communication device 30 may include multiple processors, such as Figure 3 301 and processor 307 in the embodiment of the present invention. Each of these processors may be a single-core (single-CPU) processor or a multi-core (multi-CPU) processor. The processor here may refer to one or more devices, circuits, and / or processing cores for processing data (e.g., computer program instructions).

[0143] As an embodiment, the communication device 30 may further include an output device 305 and / or an input device 306. The output device 305 is coupled to the processor 301 and can display information in a variety of ways. For example, the output device 305 may be a liquid crystal display (LCD), a light emitting diode (LED) display device, a cathode ray tube (CRT) display device, or a projector. The input device 306 is coupled to the processor 301 and can receive user input in a variety of ways. For example, the input device 306 may be a mouse, a keyboard, a touch screen device, or a sensor device.

[0144] Understandably, Figure 3 The structure shown in the figure does not constitute a limitation on the communication device, except Figure 3In addition to the components shown, the communication device may include more or fewer components than shown, or combine certain components, or arrange the components differently.

[0145] The method provided by the present application will be described below in conjunction with the accompanying drawings. Each network element in the following embodiments may have Figure 3 The parts shown are not described in detail.

[0146] It can be understood that the message names between the network elements or the names of the parameters in the messages in the following embodiments of the present application are merely examples, and other names may be used in specific implementations, and the present application does not impose any specific limitation on this.

[0147] It can be understood that in this application, "sending a measurement report to... (such as a first network device)" can be understood as the destination end of the information is the first network device. It can include sending information to the first network device directly or indirectly. "Receiving a reference signal from... (such as a terminal)" can be understood as the source end of the information is the terminal, which can include receiving information from the terminal directly or indirectly. The information may be processed as necessary between the source end and the destination end of the information transmission, such as format changes, etc., but the destination end can understand the valid information from the source end. Similar expressions in this application can be understood similarly and will not be repeated here.

[0148] It is understandable that in the present application, " / " can indicate that the objects associated with each other are in an "or" relationship, for example, A / B can indicate A or B; "and / or" can be used to describe that there are three relationships between the associated objects, for example, A and / or B can indicate: A exists alone, A and B exist at the same time, and B exists alone, where A and B can be singular or plural. In addition, expressions similar to "at least one of A, B and C" or "at least one of A, B or C" are usually used to indicate any of the following: A exists alone; B exists alone; C exists alone; A and B exist at the same time; A and C exist at the same time; B and C exist at the same time; A, B and C exist at the same time. The above uses A, B and C as an example to illustrate the optional items of the item. When there are more elements in the expression, the meaning of the expression can be obtained according to the above rules.

[0149] In order to facilitate the description of the technical solution of the present application, in the present application, words such as "first" and "second" may be used to distinguish between technical features with the same or similar functions. The words such as "first" and "second" do not limit the quantity and execution order, and the words such as "first" and "second" do not necessarily limit them to be different. In the present application, words such as "exemplary" or "for example" are used to indicate examples, illustrations or explanations, and any embodiment or design described as "exemplary" or "for example" should not be interpreted as being more preferred or more advantageous than other embodiments or designs. The use of words such as "exemplary" or "for example" is intended to present related concepts in a concrete way for easy understanding.

[0150] It is understood that the "embodiment" mentioned throughout the specification means that the specific features, structures or characteristics related to the embodiment are included in at least one embodiment of the present application. Therefore, the various embodiments in the entire specification do not necessarily refer to the same embodiment. In addition, these specific features, structures or characteristics can be combined in one or more embodiments in any suitable manner. It is understood that in various embodiments of the present application, the size of the sequence number of each process does not mean the order of execution, and the execution order of each process should be determined by its function and internal logic, and should not constitute any limitation on the implementation process of the present application.

[0151] It can be understood that in the present application, "used for indication" can include direct indication and indirect indication, and can also include explicit indication and implicit indication. When describing that a certain indication information is used to indicate A, it can include that the indication information directly indicates A or indirectly indicates A, but it does not mean that the indication information must carry A. The information indicated by a certain information (such as the first indication information described below) is called information to be indicated. In the specific implementation process, there are many ways to indicate the information to be indicated, such as but not limited to, directly indicating the information to be indicated, such as the information to be indicated itself or the index of the information to be indicated. The information to be indicated can also be indirectly indicated by indicating other information, wherein there is an association relationship between the other information and the information to be indicated. It is also possible to indicate only a part of the information to be indicated, while the other parts of the information to be indicated are known or agreed in advance. For example, the indication of specific information can also be achieved by means of the arrangement order of each information agreed in advance (such as specified by the protocol), thereby reducing the indication overhead to a certain extent.

[0152] It can be understood that in the present application, "when...", "in the case of...", "if" and "if" all mean that corresponding processing will be taken under certain objective circumstances, but do not limit the time, nor do they require any judgment action when implementing them, nor do they mean the existence of other limitations.

[0153] The term “simultaneously” in the present application may be understood as at the same time point, within a period of time, or within the same cycle.

[0154] It is understandable that some optional features in this application may be implemented independently in some scenarios without relying on other features, such as the solution on which it is currently based, to solve corresponding technical problems and achieve corresponding effects. They may also be combined with other features according to needs in some scenarios. Accordingly, the device provided in this application may also realize these features or functions accordingly, which will not be elaborated here.

[0155] It can be understood that the same step or steps or technical features with the same functions in different embodiments of the present application can be referenced to each other.

[0156] It is understandable that in the present application, the network device and / or the terminal may perform some or all of the steps in the present application, and these steps are only examples, and the present application may also perform other steps or variations of various steps. In addition, the various steps may be performed in different orders presented in the present application, and it is possible that not all of the steps in the present application need to be performed.

[0157] It is understandable that the method provided below in this application uses a network device and / or a terminal as an example of the execution subject of the interactive schematic to illustrate the method, but this application does not limit the execution subject of the interactive schematic. For example, the first network device in the method provided in the following embodiment of this application may also be a chip, a chip system, or a processor that supports the first network device to implement the method, or a logical node, a logical module, or software that can implement all or part of the functions of the first network device; the terminal in the method provided below in this application may also be a chip, a chip system, or a processor that supports the terminal to implement the method, or a logical node, a logical module, or software that can implement all or part of the terminal functions.

[0158] like Figure 4 As shown, a communication method provided by the present application may include the following steps:

[0159] S401: A first network device sends first configuration information to a terminal. Correspondingly, the terminal receives the first configuration information from the first network device.

[0160] In this application, the first network device may be Figure 1 The network device 101 in the communication system 10 shown in the figure, the terminal is any terminal in the communication system 10, such as the terminal 102, the terminal 103 or the terminal 104.

[0161] In the present application, the first configuration information can be used to configure multiple reference signal indication information and multiple PUSCH opportunities. Among them, any one of the reference signal indication information is used to indicate at least one first reference signal, and the beam corresponding to the first reference signal includes a fine beam. For example, the first reference signal may include at least one of the following reference signals: SSB, CSI-RS, SRS, tracking reference signal (TRS) or PRS. The first reference signal indication information, for example, includes at least one of a TCI state or a first reference signal identifier (Identity, ID). Any one of the multiple PUSCH opportunities is used to transmit PUSCH.

[0162] Exemplarily, taking the case where the reference signal indication information includes a first reference signal identifier and the first reference signal is SRS as an example, when the reference signal indication information indicates a first reference signal, the first configuration information may include an SRS resource identifier (srs-ResourceIndicator); when the reference signal indication information indicates multiple first reference signals, the first configuration information may include an SRS resource set (SRS-ResourceSet). Optionally, the first configuration information also includes at least one of the following: an SRS add / modify resource set (srs-ResourceSetToAddModList), or an SRS resource identifier list (srs-ResourceIDList).

[0163] Exemplarily, taking the reference signal indication information including TCI state as an example, TCI state may indicate at least one first reference signal. For example, when the reference signal indication information indicates a first reference signal, the reference signal indication information includes a TCI state, and the one TCI state indicates a first reference signal; or, when the reference signal indication information indicates multiple first reference signals, the reference signal indication information includes a TCI state, and the one TCI state indicates multiple first reference signals; or; when the reference signal indication information indicates multiple first reference signals, the reference signal indication information includes multiple TCI states, and the multiple TCI states indicate multiple first reference signals. Specifically, TCI state may indicate at least one first reference signal through the field ntn-TCI-subset. Taking the reference signal indication information including multiple TCIstates, and the multiple TCI states indicating multiple first reference signals as an example, TCI state may include the following content: ntn-TCI-subset = {TCI-state#0, TCI-state#1, TCI-state#2, TCI-state#3}. Among them, TCI-state#0, TCI-state#1, TCI-state#2 and TCI-state#3 respectively correspond to at least one first reference signal and can indicate at least one first reference signal.

[0164] It can be understood that the present application does not limit the type of TCI state included in the reference signal indication information. In other words, the TCI state configured by the first network device for the terminal each time may be of different types, and / or, the multiple TCI states configured by the first network device at the same time may be of different types. In the present application, the types of TCI states include: downlink TCI state (TCI-DL-state), uplink TCI state (TCI-UL-state), unified type of TCI state (unifiedTCI-state), downlink or joint TCI state (dl-OrJointTCI-state), SRS TCI state (srs-TCI-state), or SRS downlink or joint TCI state (srs-DLorJointTCI-state). Among them, the joint TCI state can represent uplink and / or downlink TCI state.

[0165] Optionally, the first network device can configure the TCIstate type by carrying the corresponding field in the first configuration information. For example, if the first configuration information carries the TCI-DL-state field, the TCIstate type configured in the first configuration information is the downlink TCI state. For another example, if the first configuration information carries the unified TCI-state field, the TCI state type configured in the first configuration information is the unified TCI state.

[0166] The following describes the content included in the first configuration information by taking the reference signal indication information including the TCI state as an example.

[0167] The above article introduces the method of indicating multiple TCI states through the field ntn-TCI-subset, so as to indicate the multiple TCI states included in the reference signal indication information one by one. In addition to this method, the following optional method can also be used to implement the reference signal indication information indicating multiple TCI states. The following is a detailed description.

[0168] Optionally, the first network device may configure multiple TCI states separately, such as the first configuration information may be configured through the field ntn-TCI-stateList, and the list may include multiple TCI states. Optionally, the ntn-TCI-stateList field may be included in the RACH-lessHO field, the PUSCH configuration grant (ConfiguredGrantConfig) field, the cell switching (ReconfigurationwithSync) field, or the general configuration of the serving cell (ServingCellConfigCommon) field.

[0169] Optionally, the first network device may activate TCI states preconfigured for the terminal through a control element (CE) of a medium access control (MAC). For example, the first network device activates the TCI state through UE-specific PDSCH MAC CE signaling. Exemplarily, the maximum number of activated TCI states may be 8.

[0170] Optionally, for multiple TCI states that have been configured or activated by the terminal, the first network device can specifically indicate the above multiple TCI states to the terminal in the form of a bitmap. For example, the terminal can configure 8 TCIstates at the same time, and the bitmap corresponding to ntn-TCI-subset is 8 bits. The 8 bits correspond to one TCI state respectively. When the value of a certain bit is "1", it can indicate that the first network device uses the TCI state corresponding to the bit for the terminal. When the value of a certain bit is "0", it can indicate that the first network device does not use the TCI state corresponding to the bit for the terminal, and vice versa. Among them, the first network device can indicate the TCI state corresponding to each bit to the terminal in advance. It should be understood that in specific applications, the number of bits included in the bitmap can also be greater than 8 or less than 8, without limitation.

[0171] Optionally, the first configuration information is carried in an RRC reconfiguration message. Alternatively, the content included in the first configuration information can be configured to the terminal through multiple messages, for example, configured to the terminal through an RRC reconfiguration message and a MAC CE. For example, multiple PUSCH opportunities in the first configuration information are configured to the terminal through an RRC reconfiguration message, and multiple reference signal indication information is configured to the terminal through a MAC CE.

[0172] Optionally, the first configuration information is also used to configure at least one of the following: the terminal performs RACH less switching, the terminal obtains the uplink authorization of PUSCH by configuring the authorization method, the first threshold of the signal quality of the first reference signal, the resources of multiple second reference signals, multiple PUSCH configuration authorization periods, the number of reference signal indication information corresponding to multiple PUSCH configuration authorization periods, the number of reference signal indication information corresponding to multiple PUSCH opportunities, the index of each SSB in at least one SSB or the number of reference signal indication information corresponding to each SSB. The above information is specifically described below.

[0173] In the present application, the first network device may configure the terminal to perform RACH less switching through the RACH-LessHO field (ie, the first configuration information may include the RACH-LessHO field). For the introduction of the RACH-LessHO field, reference may be made to the explanation of the technical terms involved in the present application in the foregoing text.

[0174] In the present application, the first network device may configure the terminal to obtain the uplink authorization of the PUSCH through the configured authorization method through the field ConfiguredGrantConfig (ie, the first configuration information may include the ConfiguredGrantConfig field).

[0175] In the present application, the first network device may indicate a first threshold of the signal quality of the first reference signal through the field ntn-RSRP-ThresholdTCI. This field indicates the threshold of the signal quality for selecting the TCI state in the RACH-less switching. Exemplarily, the signal quality may be characterized by RSRP. It is to be understood that the present application does not limit the type of RSRP, for example, the RSRP is L1-RSRP (layer1-RSRP) or L3-RSRP (layer3-RSRP).

[0176] In the present application, the first network device can configure the resources of multiple second reference signals of the terminal through the field cg-DMRS-Configuration (that is, the first configuration information may include the cg-DMRS-Configuration field). The resource indexes of the multiple second reference signals may correspond to the multiple PUSCH opportunities configured by the first configuration information. Exemplarily, the second reference signal may be DMRS, and the DMRS configuration is associated with the PUSCH resource, which is used for the first network device to demodulate the PUSCH after receiving it. Among them, the PUSCH resource may be a PUSCH opportunity. DMRS resources include DMRS ports. Optionally, the DMRS resources also include DMRS transmission resources. For example, the first network device configures the DMRS port through the field ntn-DMRS-Ports, and configures the DMRS transmission resource index through the field ntn-NrofDMRS-Sequences.

[0177] In the present application, the first network device may configure multiple PUSCH configuration authorization periods for the terminal through the field CGconfiguration (that is, the first configuration information may include the CGconfiguration field). One PUSCH configuration authorization period in the multiple PUSCH configuration authorization periods may include at least one PUSCH opportunity. Therefore, the field CGconfiguration may be used to configure multiple PUSCH opportunities to be configured by the first configuration information for the terminal. In other words, the multiple PUSCH opportunities to be configured by the first configuration information are included in the above-mentioned multiple PUSCH configuration authorization periods.

[0178] In the present application, the first network device may configure the number of reference signal indication information corresponding to multiple PUSCH configuration authorization periods for the terminal through the field ntn-TCI-subset (that is, the first configuration information may include the ntn-TCI-subset field). In the present application, one PUSCH configuration authorization period may correspond to at least one reference signal indication information.

[0179] In the present application, the first network device may configure the number of reference signal indication information corresponding to multiple PUSCH opportunities for the terminal through the field ntn-TCI-perCG-PUSCH (that is, the first configuration information may include the ntn-TCI-perCG-PUSCH field). It is understandable that ntn-TCI-perCG-PUSCH can refer to the value of ntn-SSB-PerCG-PUSCH, which is 1 / 8, 1 / 4, 1 / 2, 1, 2, 4, 8, 16, or other values, and the present invention is not limited to this. In the present application, one of the multiple reference signal indication information may correspond to at least one PUSCH opportunity among the multiple PUSCH opportunities configured by the first configuration information. It is understandable that the number of reference signal indication information corresponding to different PUSCH opportunities may be the same or different.

[0180] For example, taking the reference signal indication information including TCI state as an example, when the ntn-TCI-perCG-PUSCH field takes a value of 1, it means that each pre-allocated PUSCH corresponds to 1 TCI state. When the value of this field is 1 / 2, it means that 2 pre-allocated PUSCH opportunities correspond to 1 TCI state, and so on. This application does not limit the value of this field.

[0181] It can be understood that the various fields included in the above-mentioned first configuration information, such as the ntn-TCI-subset field, the ntn-TCI-stateList field, the RACH-LessHO field, the ConfiguredGrantConfig field, the CGconfiguration field, the ntn-TCI-subset field, or the ntn-TCI-perCG-PUSCH field, etc., are only exemplary fields. In specific applications, the first configuration information can also configure the corresponding information through other fields or other forms, which is not limited in this application.

[0182] In one possible implementation, after the terminal accesses the second network device, when the terminal measures that the signal quality of the service cell of the second network device has deteriorated, and the signal quality of the cell of the first network device is better than that of the service cell of the second network device, the terminal reports a signal quality measurement report (Measurement Report) to the currently connected second network device. Based on the measurement report, the second network device instructs the terminal to switch to the cell of the first network device, that is, the target cell. Optionally, the signal quality can be measured using RSRP as an indicator. Subsequently, the first network device can send the first configuration information to the terminal through the second network device so that the terminal can switch to the first network device. Optionally, the second network device can also send the first configuration information directly to the terminal, and the present invention is not limited to this.

[0183] It is understandable that after receiving the first configuration information, the terminal can be configured according to the first configuration information. Optionally, after completing the configuration, the terminal can reply to the first network device with the first configuration completion information to indicate that the terminal has successfully configured the first configuration information. At this time, the terminal can switch from the cell of the second network device to the cell of the first network device.

[0184] S402: The terminal generates a mapping relationship between multiple reference signal indication information and multiple PUSCH opportunities based on a preset rule.

[0185] It is understandable that in a specific application, there may be multiple preset rules. This application takes the following three preset rules as examples for illustration.

[0186] Preset rule 1: For multiple PUSCH opportunities in multiple PUSCH configuration authorization periods, obtain multiple sequentially arranged PUSCH configuration authorization periods according to the ascending order of resource indexes of multiple second reference signals and the ascending order of PUSCH configuration authorization period indexes; according to the order of obtaining the reference signal indication information and the number of reference signal indication information corresponding to each PUSCH configuration authorization period, establish a mapping relationship between multiple reference signal indication information and multiple sequentially arranged PUSCH configuration authorization periods.

[0187] The following takes the second reference signal as DMRS as an example to introduce the specific process of the terminal generating the above mapping relationship. It can be understood that the first configuration information configures multiple PUSCH configuration authorization periods for the terminal, each of which includes multiple PUSCH opportunities, and each PUSCH opportunity corresponds to a different DMRS resource. DMRS resources include DMRS ports. Optionally, DMRS resources also include DMRS transmission resources.

[0188] First, for multiple PUSCH opportunities included in each PUSCH configuration authorization period, the PUSCH opportunities are sorted in ascending order of the DMRS resource index corresponding to the PUSCH opportunity. For example, the PUSCH opportunities are sorted in ascending order of the DMRS port index corresponding to the PUSCH opportunity. Optionally, the PUSCH opportunities can also be sorted in ascending order in combination with the DMRS transmission resource index corresponding to the PUSCH opportunity. For example, when the DMRS port index is the same, the DMRS transmission resource index can be sorted in ascending order. Among them, the DMRS transmission resources may include DMRS time domain resources and / or frequency domain resources.

[0189] Second, the terminal sorts the PUSCH configuration grant period indexes in ascending order according to the different indexes of each PUSCH configuration grant period in the multiple configuration grant periods, and obtains multiple PUSCH configuration grant periods arranged in sequence.

[0190] Third, the terminal side sorts the multiple reference signal indication information configured by the first network device according to the order of obtaining the reference signal indication information, for example, sorts the reference signal indication information according to the activation order of the reference signal indication information according to the MAC CE information sent by the first network device.

[0191] Exemplarily, there may be 128 identifiers (Identity, ID) corresponding to the reference signal indication information, and the terminal may be configured with up to 8 reference signal indication information. For example, the first network device sequentially activates reference signal indication information 40, reference signal indication information 50, reference signal indication information 30, and reference signal indication information 10 for the terminal, and the above reference signal indication information is indicated by ntn-TCI-subset = {TCI-state#0, TCI-state#1, TCI-state#2, TCI-state#3}.

[0192] Fourth, combining the multiple PUSCH authorization periods arranged in sequence obtained in the above steps, the PUSCH opportunities arranged in sequence within the PUSCH authorization period, and the reference signal indication information arranged in sequence, a mapping relationship between the multiple reference signal indication information and the multiple PUSCH configuration authorization periods arranged in sequence is established. According to the mapping relationship between the multiple reference signal indication information and the multiple PUSCH configuration authorization periods arranged in sequence, the mapping relationship between the multiple reference signal indication information and the multiple PUSCH opportunities can be obtained.

[0193] For example, the first configuration information configures 4 PUSCH configuration authorization periods (such as PUSCH configuration authorization period #1, PUSCH configuration authorization period #2, PUSCH configuration authorization period #3, and PUSCH configuration authorization period #4), each PUSCH configuration authorization period includes 2 PUSCH opportunities, and the terminal is configured with 8 TCI states. Figure 5 As shown in the figure, the vertical axis of the coordinate system represents the DMRS port, and from top to bottom, it is sorted in ascending order of the DMRS port and the DMRS transmission resource index, and one square represents a PUSCH opportunity. Taking PUSCH configuration authorization period #1 as an example, PUSCH configuration authorization period #1 includes PUSCH opportunity #1 and PUSCH opportunity #2. Among them, the DMRS port number corresponding to PUSCH opportunity #1 is 1000, and the DMRS port number corresponding to PUSCH opportunity #2 is 1002. Therefore, PUSCH opportunity #1 is above PUSCH opportunity #2. Figure 5The PUSCH opportunities in other PUSCH configuration authorization periods are also sorted according to the above method, where PUSCH opportunity #1 in PUSCH configuration authorization period #1, PUSCH opportunity #3 in PUSCH configuration authorization period #2, PUSCH opportunity #5 in PUSCH configuration authorization period #3, and PUSCH opportunity #7 in PUSCH configuration authorization period #4 all correspond to the same DMRS port 1000, represented by DMRS-1; PUSCH opportunity #2 in PUSCH configuration authorization period #1, PUSCH opportunity #4 in PUSCH configuration authorization period #2, PUSCH opportunity #6 in PUSCH configuration authorization period #3, and PUSCH opportunity #8 in PUSCH configuration authorization period #4 all correspond to the same DMRS port 1002, represented by DMRS-2. The terminal can also sort the PUSCH configuration authorization periods in ascending order of the PUSCH configuration authorization period index, for example, in Figure 5 In the figure, if the index of the PUSCH configuration grant period is represented in ascending order from left to right according to the horizontal axis of the coordinate system, the PUSCH configuration grant period from left to right is: PUSCH configuration grant period #1, PUSCH configuration grant period #2, PUSCH configuration grant period #3, and PUSCH configuration grant period #4. It can be understood that Figure 5A dotted box in the represents a PUSCH configuration authorization period. It is understandable that the numerical values ​​of the indexes of multiple PUSCH configuration authorization periods may be discontinuous and are not limited. The terminal may also sort multiple TCI states according to the order in which the TCI state is acquired. For example, the first network device activates TCI state 40, TCI state 50, TCI state 30, and TCI state 10 for the terminal in sequence, and the terminal determines that the order of multiple TCI states is TCI state 40, TCI state 50, TCI state 30, and TCI state 10. Therefore, the terminal determines that PUSCH opportunity #1 and PUSCH opportunity #2 correspond to TCIstate 40, PUSCH opportunity #3 and PUSCH opportunity #4 correspond to TCI state 50, PUSCH opportunity #5 and PUSCH opportunity #6 correspond to TCI state 30, and PUSCH opportunity #7 and PUSCH opportunity #8 correspond to TCI state 10. It can be understood that multiple reference signal indication information is evenly mapped to multiple PUSCH opportunities, that is, the number of reference signal indication information corresponding to each PUSCH opportunity is the same, and the number of reference signal indication information corresponding to each PUSCH opportunity can be indicated by the field ntn-TCI-perCG-PUSCH. Optionally, since the number of reference signal indication information corresponding to each PUSCH configuration authorization period is also the same, the number of reference signal indication information corresponding to each PUSCH opportunity can be obtained according to the number of reference signal indication information corresponding to multiple PUSCH configuration authorization periods and the number of multiple PUSCH opportunities.

[0194] Understandably, Figure 5 The scenario is that one PUSCH configuration grant period corresponds to one reference signal indication information. In a specific application, one PUSCH configuration grant period may also correspond to multiple reference signal indication information. For example, a mapping relationship is established according to the order of obtaining the reference signal indication information and the ascending order of the PUSCH opportunity index, without limitation.

[0195] Preset rule 2: According to the number of reference signal indication information corresponding to each PUSCH opportunity and in accordance with the order in which the reference signal indication information is obtained, a mapping relationship between multiple reference signal indication information and multiple PUSCH opportunities is established.

[0196] The contents from the first to the third refer to the contents from the first to the third of preset rule 1 and will not be repeated here.

[0197] Fourth, the multiple PUSCH opportunities are sorted in the ascending order of the resource indexes of the multiple second reference signals and the ascending order of the PUSCH configuration authorization period index to obtain multiple PUSCH opportunities arranged in sequence. The multiple PUSCH opportunities arranged in sequence are used to generate a mapping relationship between multiple reference signal indication information and multiple PUSCH opportunities.

[0198] When multiple reference signal indication information is mapped to multiple PUSCH opportunities, there are two cases: uniform mapping and non-uniform mapping.

[0199] It can be understood that for uniform mapping, that is, different PUSCH opportunities in multiple PUSCH opportunities correspond to the same number of reference signal indication information. The number of reference signal indication information configured for the terminal (that is, the number of reference signal indication information included in ntn-TCI-subset), the number of DMRS resources (such as the number of DMRS ports, or the product of the number of DMRS ports and the number of DMRS transmission resources), the number of reference signal indication information corresponding to each PUSCH opportunity (ntn-TCI-perCG-PUSCH) and the number of PUSCH configuration authorization periods (that is, association period association period) satisfy the following relationship:

[0200] The number of reference signal indication information = the number of DMRS resources * the number of reference signal indication information corresponding to each PUSCH opportunity * the number of PUSCH configuration grant cycles.

[0201] In the case where the terminal obtains multiple DMRS resources and multiple reference signal indication information, if the first network device also indicates the number of PUSCH configuration authorization periods (i.e., association period), the terminal can derive the number of reference signal indication information corresponding to each PUSCH opportunity (ntn-TCI-perCG-PUSCH) according to the above relationship. It can be understood that the terminal can determine multiple PUSCH configuration authorization period indexes according to the number of multiple reference signal indication information and the resource indexes of multiple second reference signals.

[0202] Exemplarily, taking ntn-TCI-perCG-PUSCH=2 (indicating that within a PUSCH configuration authorization period, one PUSCH opportunity corresponds to two TCI states), the first configuration information configures two PUSCH configuration authorization periods, and each PUSCH configuration authorization period includes two PUSCH opportunities as an example, two PUSCH configuration authorization periods can correspond to a total of eight TCI states, that is, ntn-TCI-subset={TCI-state#0,TCI-state#1,TCI-state#2,TCI-state#3,TCI-state#4,TCI-state#5,TCI-state#6,TCI-state#7}. The terminal can first sort the PUSCH opportunities according to the first to third steps above, and then establish a mapping relationship between the sorted PUSCH opportunities and the eight TCI states. The mapping relationship can be as follows Figure 6 As shown. Among them, PUSCH timing #1 and PUSCH timing #3 correspond to DMRS-1, and PUSCH timing #2 and PUSCH timing #4 correspond to DMRS-2. Specifically, the mapping relationship between PUSCH timing and TCI state is: within the PUSCH configuration authorization period #1, PUSCH timing #1 corresponds to TCI state #0 and TCI state #1 (recorded as TCI state #0-1), and PUSCH timing #2 corresponds to TCI state #2 and TCI state #3 (recorded as TCI state #2-3); within the PUSCH configuration authorization period #2, PUSCH timing #3 corresponds to TCI state #4 and TCI state #5 (recorded as TCI state #4-5), and PUSCH timing #4 corresponds to TCI state #6 and TCI state #7 (recorded as TCI state #6-7).

[0203] It can be understood that for uneven mapping, different PUSCH opportunities among multiple PUSCH opportunities correspond to different numbers of reference signal indication information. The number of reference signal indication information corresponding to multiple PUSCH opportunities included in the PUSCH configuration authorization period (ntn-TCI-perCG-PUSCH) takes different values ​​for this field corresponding to each PUSCH configuration authorization period, thereby realizing uneven mapping of multiple reference signal indication information to multiple PUSCH opportunities. Specifically, the first configuration information indicates a set of reference signal indication information lists (such as the field ntn-TCI-stateListSet), which includes multiple reference signal indication information (ntn-TCI-stateList), and each ntn-TCI-stateList corresponds to a TCI-perCG-PUSCH, indicating multiple reference signal indication information corresponding to each PUSCH opportunity in a PUSCH configuration authorization period. Combined with Figure 7 For explanation, TCI-perCG-PUSCH=2 of PUSCH configuration authorization period #1, indicating that each PUSCH opportunity in PUSCH configuration authorization period #1 corresponds to 2 TCI states; TCI-perCG-PUSCH=4 of PUSCH configuration authorization period #2, indicating that each PUSCH opportunity in PUSCH configuration authorization period #1 corresponds to 4 TCI states; TCI-perCG-PUSCH=1 of PUSCH configuration authorization period #3, indicating that each PUSCH opportunity in PUSCH configuration authorization period #1 corresponds to 1 TCI state; TCI-perCG-PUSCH=2 of PUSCH configuration authorization period #4, indicating that each PUSCH opportunity in PUSCH configuration authorization period #4 corresponds to 2 TCI states. And the number of reference signal indication information included in each ntn-TCI-stateList may be different, and the multiple PUSCH opportunities included in a PUSCH configuration authorization period may correspond to all or part of the reference signal indication information of the PUSCH configuration authorization period. On the premise that each reference signal indication information has a corresponding PUSCH opportunity for mapping, there is no restriction on whether the multiple PUSCH opportunities included in a PUSCH configuration authorization period correspond to all or part of the reference signal indication information of the PUSCH configuration authorization period.

[0204] Exemplary, combined Figure 7For explanation, ntn-TCI-stateListSet={ntn-TCI-stateList#1,ntn-TCI-stateList#2,ntn-TCI-stateList#3,ntn-TCI-stateList#4}, wherein, ntn-TCI-stateList#1={TCI-State#0,TCI-State#1}, ntn-TCI-stateList#2={TCI-State#2,TCI-State#3,TCI-State#4,TCI-State#5}, ntn-TCI-stateList#3={TCI-State#6,TCI-State#7}, ntn-TCI-stateList#4={TCI-State#8,TCI-State#9,TCI-State#10,TCI-State#11}, and the above multiple ntn-TCI-stateLists sorted in ascending order of index respectively correspond to the PUSCH configuration authorization periods sorted in ascending order of index. Multiple PUSCH opportunities within each PUSCH configuration grant period correspond to DMRS-1 or DMRS-2, where DMRS-1 can represent DMRS port 1000 and DMRS-2 can represent DMRS port 1002, without limitation. Figure 7 In the example given, for PUSCH configuration authorization period #1, the PUSCH opportunity corresponding to DMRS-1 is PUSCH opportunity #1, and PUSCH opportunity #1 corresponds to TCI state #0-1; the PUSCH opportunity corresponding to DMRS-2 is PUSCH opportunity #2, and PUSCH opportunity #2 also corresponds to TCIstate #0-1. For PUSCH configuration authorization period #2, the PUSCH timing corresponding to DMRS-1 is PUSCH timing #3, and PUSCH timing #3 corresponds to TCI state #2-5; the PUSCH timing corresponding to DMRS-2 is PUSCH timing #4, and PUSCH timing #4 also corresponds to TCIstate #2-5; for PUSCH configuration authorization period #3, the PUSCH timing corresponding to DMRS-1 is PUSCH timing #5, and PUSCH timing #5 corresponds to TCI state #6; the PUSCH timing corresponding to DMRS-2 is PUSCH timing #6, and PUSCH timing #6 corresponds to TCIstate #7; for PUSCH configuration authorization period #4, the PUSCH timing corresponding to DMRS-1 is PUSCH timing #7, and PUSCH timing #7 corresponds to TCI state #8-9; the PUSCH timing corresponding to DMRS-2 is PUSCH timing #8, and PUSCH timing #8 corresponds to TCIstate #10-11.

[0205] Optionally, if the first configuration information includes multiple ntn-TCI-PUSCH fields, it is possible to indicate for each PUSCH opportunity in multiple PUSCHs at least one reference signal indication information that can be mapped to each PUSCH opportunity, so that it is known how many reference signal indication information each PUSCH opportunity corresponds to. Therefore, when the first network device indicates multiple reference signal indication information, it can directly include all reference signal indication information through the ntn-TCI-stateListSet field, or it can indicate the reference signal indication information list (ntn-TCI-stateList) corresponding to each PUSCH configuration authorization period through the ntn-TCI-stateList, for example: ntn-TCI-stateListSet = {ntn-TCI-stateList#1, ntn-TCI-stateList#2, ntn-TCI-stateList#3, ntn-TCI-stateList#4}. The effects of the above two methods of indicating reference signal indication information are the same, and this application does not limit them.

[0206] Preset rule 3: According to the number of reference signal indication information corresponding to each SSB, according to the acquisition order of the reference signal indication information and the acquisition order of the SSB, a mapping relationship between multiple reference signal indication information and multiple PUSCH opportunities is established.

[0207] The contents from the first to the third refer to the contents from the first to the third of preset rule 1 and will not be repeated here.

[0208] Fourth, according to the order of acquisition of at least one SSB, the order of increasing resource indexes of multiple second reference signals, and the order of increasing PUSCH configuration authorization period index, multiple PUSCH opportunities are sorted to obtain multiple sequentially arranged PUSCH opportunities. Among them, the multiple sequentially arranged PUSCH opportunities can be used to generate a mapping relationship between multiple reference signal indication information and multiple PUSCH opportunities. Among them, the resource indexes of multiple second reference signals correspond to multiple PUSCH opportunities.

[0209] The following uses examples of uniformly mapping reference signal indication information to multiple PUSCH opportunities corresponding to multiple SSBs and non-uniformly mapping reference signal indication information to multiple PUSCH opportunities corresponding to multiple SSBs to illustrate.

[0210] First, combine Figure 8, the reference signal indication information is evenly mapped to multiple PUSCH opportunities corresponding to multiple SSBs respectively. If the first configuration information configures two SSBs: SSB#0 and SSB#1, each SSB corresponds to 4 PUSCH opportunities, and one PUSCH opportunity corresponds to 4 TCI states (ie, ntn-SSB-perCG-PUSCH=1 / 4), the TCI state is indicated by the field ntn-TCI-subset, that is, ntn-TCI-subset={ntn-TCI-State#0, ntn-TCI-State#1, ntn-TCI-State#2, ntn-TCI-State#3, ntn-TCI-State#4, ntn-TCI-State#5, ntn-TCI-State#6, ntn-TCI-State#7}, then a method similar to the preset rule 1 can be used to evenly map the TCI state to the PUSCH opportunity. Figure 8 In the example provided, SSB#0 corresponds to two PUSCH configuration authorization periods: PUSCH configuration authorization period #1 and PUSCH configuration authorization period #2, wherein PUSCH configuration authorization period #1 includes PUSCH opportunity #1 and PUSCH opportunity #2, and PUSCH configuration authorization period #2 includes PUSCH opportunity #3 and PUSCH opportunity #4, wherein PUSCH opportunity #1 and PUSCH opportunity #3 correspond to DMRS-1 resources, and PUSCH opportunity #2 and PUSCH #4 correspond to DMRS-2 resources. TCI states are evenly allocated to the four PUSCH opportunities corresponding to SSB#0, and each PUSCH opportunity corresponds to a TCI state. The same is true for SSB#1, which will not be repeated.

[0211] Please refer to Fig. 9 , Fig. 9 and Figure 8 The difference is that another uniform mapping method is used: for multiple PUSCH opportunities corresponding to each SSB, all TCI states of the SSB are allocated to each PUSCH opportunity. That is, PUSCH opportunity #1, PUSCH opportunity #2, PUSCH opportunity #3 or PUSCH opportunity #4 corresponds to TCI state #0-3, and PUSCH opportunity #5, PUSCH opportunity #6, PUSCH opportunity #7 or PUSCH opportunity #8 corresponds to TCI state #4-7.

[0212] On the premise that all reference signal indication information is mapped to PUSCH opportunities, the present application does not limit the number of reference signal indication information mapped to each PUSCH opportunity.

[0213] Optionally, the first configuration information includes multiple ntn-TCI-perSSB-PUSCH fields, which are used to indicate the number of reference signal indication information mapped to multiple PUSCH opportunities corresponding to each SSB. Figure 8 For example, ntn-TCI-perSSB-PUSCH = 1; Fig. 9 This example corresponds to the case where ntn-TCI-perSSB-PUSCH=4.

[0214] Optionally, the first configuration information includes ntn-TCI-PerSSB, which is used to indicate the number of reference signal indication information corresponding to each SSB, because the content indicated by this field can be obtained through ntn-TCI-StateList, that is, the total number of reference signal indication information is obtained through ntn-TCI-StateList, and the total number of reference signal indication information is divided by the number of SSBs to be mapped to obtain ntn-TCI-PerSSB.

[0215] The following introduces the uneven mapping of reference signal indication information to multiple PUSCH opportunities corresponding to multiple SSBs.

[0216] Optionally, the first network device may indicate to the terminal multiple reference signal indication information corresponding to each SSB through the field ntn-TCI-SSBList, for example, ntn-TCI-SSBListSet = {ntn-TCI-StateList#0, ntn-TCI-StateList#1, ntn-TCI-StateList#2, ntn-TCI-StateList#3}, each ntn-TCI-StateList includes multiple reference signal indication information, and the reference signal indication information of multiple ntn-TCI-StateLists may be different. Refer to the introduction of the reference signal indication information in S401, and this application does not limit this.

[0217] Optionally, the first network device can indicate to the terminal the number of reference signal indication information mapped to the corresponding PUSCH opportunity in each SSB through the field ntn-TCI-SSB-PUSCH, and the number of reference signal indication information corresponding to multiple SSBs can be indicated by the field ntn-TCI-SSB-PUSCHList. For example, it can be expressed as follows: ntn-TCI-SSB-PUSCHList = {ntn-TCI-SSB-PUSCH#0, ntn-TCI-SSB-PUSCH#1, ntn-TCI-SSB-PUSCH#2, ntn-TCI-SSB-PUSCH#3}. Among them, each ntn-TCI-SSB-PUSCH can correspond to ntn-TCI-StateList. For example, ntn-TCI-SSB-PUSCH#0 corresponds to the above-mentioned ntn-TCI-StateList#0, which is used to indicate the number of TCI states mapped to the PUSCH opportunity corresponding to the SSB, and so on. Subsequently, the terminal can generate a mapping relationship according to the above configuration.

[0218] S403: The terminal determines target reference signal indication information.

[0219] It can be understood that the terminal measures the first reference signal corresponding to each reference signal indication information among the multiple reference signal indication information, and determines the target reference signal indication information according to the measurement result.

[0220] One possible implementation method is that the terminal may determine the reference signal indication information corresponding to the first reference signal with the highest signal quality as the target reference signal indication information. For example, if the first configuration information does not indicate the first threshold, the terminal determines the reference signal indication information corresponding to the first reference signal with the highest signal quality as the target reference signal indication information.

[0221] In a possible implementation manner, the terminal may determine the reference signal indication information corresponding to the first reference signal whose signal quality is greater than or equal to the first threshold as the target reference signal indication information. For example, if the first configuration information indicates the first threshold, the terminal may select a first reference signal with the best signal quality from at least one first reference signal whose signal quality is greater than or equal to the first threshold, and use the reference signal indication information corresponding to the first reference signal as the target reference signal indication information, or randomly select a first reference signal from the reference signals greater than or equal to the first threshold, and use the reference signal indication information corresponding to the first reference signal as the target reference signal indication information.

[0222] The first threshold may be indicated by the field ntn-RSRP-ThresholdTCI included in the first configuration information.

[0223] Through the above method, in the process of accessing the first network device (cell switching), the terminal selects a beam with better signal quality to send PUSCH to the first network device, which can ensure the communication quality of the terminal and improve the reliability of communication.

[0224] S404: The terminal determines a PUSCH opportunity corresponding to the target reference signal indication information from multiple PUSCH opportunities according to the target reference signal indication information and the above mapping relationship.

[0225] S405: The terminal sends a PUSCH to the first network device at a PUSCH timing corresponding to the target reference signal indication information through the beam corresponding to the first reference signal indicated by the target reference signal indication information. Correspondingly, the first network device receives the PUSCH from the terminal.

[0226] In a possible implementation manner, the first network device receives information on multiple PUSCH opportunities configured by the first configuration information to obtain a PUSCH from the terminal.

[0227] In another possible implementation manner, the first network device determines the PUSCH timing corresponding to the target reference signal indication information in the same manner as the terminal, and receives the PUSCH from the terminal at the PUSCH timing.

[0228] Exemplarily, the first network device generates a mapping relationship between multiple reference signal indication information and multiple PUSCH opportunities based on a preset rule, determines the target reference signal indication information, determines the PUSCH opportunity corresponding to the target reference signal indication information from multiple PUSCH opportunities according to the target reference signal indication information and the mapping relationship, and receives the PUSCH from the terminal at the PUSCH opportunity corresponding to the target reference signal indication information through the beam corresponding to the first reference signal indicated by the target reference signal indication information. It can be understood that the above process is similar to the process of S402 to S404, and the corresponding description in S402 to S404 can be referred to without further elaboration.

[0229] Optionally, after the terminal receives the target reference signal indication information, the measurement result can also be sent to the first network device, so that the first network device determines the target reference signal indication information based on the measurement result, or the terminal indicates the determined target reference signal indication information to the first network device, so that the first network device determines the target reference signal indication information according to the indication of the terminal.

[0230] It can be understood that after receiving the PUSCH, the first network device can also determine the beam for subsequently sending signals to the terminal based on the beam of the received PUSCH, which can provide communication reliability and improve subsequent communication quality.

[0231] It can be understood that the solution of the present application, in addition to being used in RACH-less switching, is also applicable to information sending under CG-SDT. Specifically, the solution of the present application is applicable to scenarios including the sending of initial information.

[0232] based on Figure 4 According to the method shown, the first network device can configure multiple reference signal indication information and multiple PUSCH opportunities for the terminal. In this way, the terminal can determine the mapping relationship between multiple reference signal indication information and multiple PUSCH opportunities based on the configuration, and then determine the target PUSCH opportunity corresponding to the target reference signal indication information according to the target reference signal indication information and the mapping relationship, and send PUSCH on the target PUSCH opportunity through the beam corresponding to the first reference signal indicated by the target reference signal indication information. Because the beam corresponding to the above-mentioned first reference signal includes a fine beam, the fine beam has better directionality, so it can effectively improve the PUSCH transmission rate, reduce the delay of the random access process, and thus increase the probability of successful cell switching of the terminal.

[0233] The above mainly introduces the scheme provided by the present application from the perspective of the interaction between the terminal and the first network device. Accordingly, the present application also provides a communication device, which may be a terminal in the above method embodiment, or a device including the above terminal, or a component that can be used for the terminal; or, the communication device may be a first network device in the above method embodiment, or a device including the above first network device, or a component that can be used for the first network device. It can be understood that in order to realize the above functions, the above terminal or the first network device, etc., includes a hardware structure and / or software module corresponding to each function. Those skilled in the art should easily realize that, in combination with the units and algorithm operations of each example described in the embodiments disclosed herein, the present application can be implemented in the form of hardware or a combination of hardware and computer software. Whether a function is executed in the form of hardware or computer software driving hardware 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 exceed the scope of the present application.

[0234] The present application can divide the terminal and the first network device into functional modules according to the above method example. For example, each functional module can be divided according to each function, or two or more functions can be integrated into one processing module. The above integrated module can be implemented in the form of hardware or in the form of software functional modules. It can be understood that the division of modules in the present application is schematic and is only a logical function division. There may be other division methods in actual implementation.

[0235] For example, when the functional modules are divided in an integrated manner, Fig.10 The structure diagram of a communication device 100 is shown. The communication device 100 includes an interface module 1001 and a processing module 1002. The interface module 1001, which may also be referred to as an interface unit, is used to perform transceiver operations, and may be, for example, an interface circuit, a transceiver, a transceiver or a communication interface. The processing module 1002, which may also be referred to as a processing unit, is used to perform operations other than transceiver operations, and may be, for example, a processing circuit or a processor.

[0236] In some embodiments, the communication device 100 may further include a storage module ( Fig.10 ), for storing program instructions and data.

[0237] Exemplarily, the communication device 100 is used to implement the functions of a terminal. The communication device 100 is, for example, Figure 4 A terminal of the embodiment shown.

[0238] The interface module 1001 is used to receive first configuration information from a first network device, wherein the first configuration information is used to configure multiple reference signal indication information and multiple physical uplink shared channel PUSCH opportunities; each reference signal indication information in the multiple reference signal indication information is used to indicate at least one first reference signal, and the beam corresponding to the first reference signal includes a thin beam. For example, the interface module 1001 can be used to execute S401.

[0239] The processing module 1002 is configured to generate a mapping relationship between multiple reference signal indication information and multiple PUSCH opportunities based on a preset rule. For example, the processing module 802 may be configured to execute S402.

[0240] The processing module 1002 is further configured to determine target reference signal indication information. For example, the processing module 802 may also be configured to execute S403.

[0241] The processing module 1002 is further configured to, after determining the PUSCH opportunity corresponding to the target reference signal indication information from multiple PUSCH opportunities according to the target reference signal indication information and the mapping relationship, control the interface module 1001 to send the PUSCH at the PUSCH opportunity corresponding to the target reference signal indication information through the beam corresponding to the first reference signal indicated by the target reference signal indication information. For example, the processing module 802 can be configured to execute S404 and S408.

[0242] In one possible implementation, multiple PUSCH opportunities are included in multiple PUSCH configuration authorization periods, and the first configuration information is also used to configure resources of multiple second reference signals and the number of reference signal indication information corresponding to the multiple PUSCH configuration authorization periods; the preset rule is: for multiple PUSCH opportunities in multiple PUSCH configuration authorization periods, obtain multiple sequentially arranged PUSCH configuration authorization periods according to the ascending order of resource indexes of multiple second reference signals and the ascending order of PUSCH configuration authorization period indexes; establish a mapping relationship between multiple reference signal indication information and multiple sequentially arranged PUSCH configuration authorization periods according to the order of obtaining the reference signal indication information and the number of reference signal indication information corresponding to each PUSCH configuration authorization period.

[0243] In one possible implementation, multiple PUSCH opportunities are included in multiple PUSCH configuration authorization periods, and the first configuration information is also used to configure the number of reference signal indication information corresponding to each PUSCH opportunity in the multiple PUSCH configuration authorization periods; the preset rule is: according to the number of reference signal indication information corresponding to each PUSCH opportunity, according to the order of obtaining the reference signal indication information, establish a mapping relationship between multiple reference signal indication information and multiple PUSCH opportunities.

[0244] In one possible implementation, the first configuration information is also used to configure resources for multiple second reference signals, and the resource indexes of the multiple second reference signals correspond to multiple PUSCH opportunities. The processing module 1002 is also used to sort the multiple PUSCH opportunities in the ascending order of the resource indexes of the multiple second reference signals and the ascending order of the PUSCH configuration authorization period index to obtain multiple PUSCH opportunities arranged in sequence. The multiple PUSCH opportunities arranged in sequence are used to generate a mapping relationship between multiple reference signal indication information and multiple PUSCH opportunities.

[0245] In a possible implementation, the first configuration information is also used to configure the index of each SSB in at least one SSB, and the number of reference signal indication information corresponding to each SSB; the preset rule is: according to the number of reference signal indication information corresponding to each SSB, according to the order of obtaining the reference signal indication information and the order of obtaining the SSB, a mapping relationship between multiple reference signal indication information and multiple PUSCH opportunities is established.

[0246] In one possible implementation, the first configuration information is also used to configure resources for multiple second reference signals, and the resource indexes of the multiple second reference signals correspond to multiple PUSCH opportunities. The processing module 1002 is also used to sort the multiple PUSCH opportunities according to the order of acquisition of at least one SSB, the ascending order of the resource indexes of the multiple second reference signals, and the ascending order of the PUSCH configuration authorization period index, to obtain multiple PUSCH opportunities arranged in sequence, and the multiple PUSCH opportunities arranged in sequence are used to generate a mapping relationship between multiple reference signal indication information and multiple PUSCH opportunities.

[0247] In a possible implementation manner, the first configuration information is further used to configure multiple PUSCH configuration grant periods.

[0248] In a possible implementation manner, the processing module 1002 is further configured to determine multiple PUSCH configuration grant period indexes according to the number of multiple reference signal indication information and resource indexes of multiple second reference signals.

[0249] In a possible implementation manner, one reference signal indication information among the multiple reference signal indication information corresponds to at least one PUSCH opportunity among the multiple PUSCH opportunities.

[0250] In a possible implementation manner, different PUSCH opportunities among the multiple PUSCH opportunities correspond to the same amount of reference signal indication information.

[0251] In a possible implementation manner, different PUSCH opportunities among the multiple PUSCH opportunities correspond to different amounts of reference signal indication information.

[0252] In a possible implementation manner, the signal quality of the first reference signal indicated by the target reference signal indication information is the best, or the signal quality of the first reference signal indicated by the target reference signal indication information is greater than a first threshold.

[0253] In a possible implementation manner, the reference signal indication information includes at least one of a TCI state or a reference signal identifier ID.

[0254] When used to implement the functions of the terminal, for other functions that the communication device 100 can implement, refer to Figure 4 The relevant introduction of the illustrated embodiment will not be repeated in detail.

[0255] Alternatively, illustratively, the communication device 100 is used to implement the function of the first network device. Figure 4 The first network device of the illustrated embodiment.

[0256] The interface module 1001 is used to send first configuration information, where the first configuration information is used to configure multiple reference signal indication information and multiple PUSCH opportunities; the reference signal indication information is used to indicate at least one first reference signal, and the beam corresponding to the first reference signal includes a thin beam. For example, the interface module 1001 can be used to execute S401.

[0257] In one possible implementation, the first configuration information is also used to configure at least one of the following: resources of multiple second reference signals, multiple PUSCH configuration authorization periods, the number of reference signal indication information corresponding to multiple PUSCH configuration authorization periods, the number of reference signal indication information corresponding to each PUSCH opportunity in multiple PUSCH configuration authorization periods, the index of each SSB in at least one synchronization signal and a physical layer broadcast channel block SSB, or the number of reference signal indication information corresponding to each SSB, and one PUSCH configuration authorization period among the multiple PUSCH configuration authorization periods includes at least one PUSCH opportunity among the multiple PUSCH opportunities.

[0258] In a possible implementation manner, the reference signal indication information includes at least one of a transmission configuration indicator state TCIstate or a reference signal identifier ID.

[0259] In a possible implementation manner, the interface module 1001 is further configured to receive the PUSCH at multiple PUSCH opportunities.

[0260] When used to implement the function of the first network device, for other functions that the communication device 100 can implement, refer to Figure 4 The relevant introduction of the illustrated embodiment will not be repeated in detail.

[0261] In a simple embodiment, those skilled in the art will appreciate that the communication device 100 may use Figure 3 For example, Figure 3 The processor 301 in the communication device 100 can call the computer-executable instructions stored in the memory 303 to enable the communication device 100 to execute the method in the above embodiment.

[0262] For example, Fig.10 The functions / implementation processes of the interface module 1001 and the processing module 1002 can be Figure 3 The processor 301 in the embodiment calls the computer execution instruction stored in the memory 303 to implement. Or, Fig.10 The function / implementation process of the processing module 1002 in Figure 3 The processor 301 in the embodiment calls the computer execution instruction stored in the memory 303 to implement, Fig.10 The function / implementation process of the interface module 1001 in Figure 3 The communication interface 304 in is implemented.

[0263] It is understandable that one or more of the above modules or units can be implemented by software, hardware or a combination of the two. When any of the above modules or units is implemented in software, the software exists in the form of computer program instructions and is stored in a memory, and a processor can be used to execute program instructions and implement the above method flow. The processor can be built into an SoC (system on chip) or an ASIC, or it can be an independent semiconductor chip. In addition to the core used to execute software instructions for calculation or processing in the processor, necessary hardware accelerators may also be further included, such as a field programmable gate array (FPGA), a PLD (programmable logic device), or a logic circuit that implements a dedicated logic operation.

[0264] When the above modules or units are implemented in hardware, the hardware can be any one or any combination of a CPU, a microprocessor, a digital signal processing (DSP) chip, a microcontroller unit (MCU), an artificial intelligence processor, an ASIC, a SoC, an FPGA, a PLD, a dedicated digital circuit, a hardware accelerator or a non-integrated discrete device, which can run the necessary software or not rely on the software to execute the above method flow.

[0265] Optionally, the present application also provides a chip system, including: at least one processor and an interface, the at least one processor is coupled to a memory through the interface, and when the at least one processor executes a computer program or instruction in the memory, the method in any of the above method embodiments is executed. In one possible implementation, the chip system also includes a memory. Optionally, the chip system can be composed of a chip, or it can include a chip and other discrete devices, which is not specifically limited in the present application.

[0266] Optionally, the present application also provides a computer-readable storage medium. All or part of the processes in the above method embodiments can be completed by a computer program to instruct the relevant hardware, and the program can be stored in the above computer-readable storage medium. When the program is executed, it can include the processes of the above method embodiments. The computer-readable storage medium can be an internal storage unit of the communication device of any of the above embodiments, such as a hard disk or memory of the communication device. The above computer-readable storage medium can also be an external storage device of the above communication device, such as a plug-in hard disk equipped on the above communication device, a smart memory card (smart med ia card, SMC), a secure digital (secure digital, SD) card, a flash card (flash card), etc. Further, the above computer-readable storage medium can also include both the internal storage unit of the above communication device and an external storage device. The above computer-readable storage medium is used to store the above computer program and other programs and data required by the above communication device. The above computer-readable storage medium can also be used to temporarily store data that has been output or is to be output.

[0267] Optionally, the present application also provides a computer program product. All or part of the processes in the above method embodiments can be completed by a computer program to instruct related hardware, and the program can be stored in the above computer program product. When the program is executed, it can include the processes of the above method embodiments.

[0268] Optionally, the present application also provides a computer instruction. All or part of the processes in the above method embodiments can be completed by computer instructions to instruct related hardware (such as a computer, a processor, a terminal or a first network device, etc.). The program can be stored in the above computer-readable storage medium or in the above computer program product.

[0269] Optionally, the present application also provides a communication system, including: the terminal in the above embodiment and a first network device.

[0270] Through the description of the above implementation methods, technical personnel in the relevant field can clearly understand that for the convenience and simplicity of description, only the division of the above-mentioned functional modules is used as an example. In actual applications, the above-mentioned functions can be assigned to different functional modules as needed, that is, the internal structure of the device can be divided into different functional modules to complete all or part of the functions described above.

[0271] In the several embodiments provided in the present application, it should be understood that the disclosed devices and methods can be implemented in other ways. For example, the device embodiments described above are only schematic, for example, the division of modules or units is only a logical function division, and there may be other division methods in actual implementation, such as multiple units or components can be combined or integrated into another device, or some features can be ignored or not executed. Another point is that the mutual coupling or direct coupling or communication connection shown or discussed can be through some interfaces, indirect coupling or communication connection of devices or units, which can be electrical, mechanical or other forms.

[0272] The units described as separate components may or may not be physically separated, and the components shown as units may be one physical unit or multiple physical units, that is, they may be located in one place or distributed in multiple different places. Some or all of the units may be selected according to actual needs to achieve the purpose of the present embodiment.

[0273] In addition, each functional unit in each embodiment of the present application may be integrated into one processing unit, or each unit may exist physically separately, or two or more units may be integrated into one unit. The above-mentioned integrated unit may be implemented in the form of hardware or in the form of software functional units.

[0274] The above are only specific implementations of the present application, but the protection scope of the present application is not limited thereto, and any changes or substitutions within the technical scope disclosed in the present application should be included in the protection scope of the present application. Therefore, the protection scope of the present application should be based on the protection scope of the claims.

Claims

1. A communication method, characterized in that: The method comprises: Receive first configuration information, where the first configuration information is used to configure multiple reference signal indication information and multiple physical uplink shared channel PUSCH opportunities; each reference signal indication information in the multiple reference signal indication information is used to indicate at least one first reference signal, and the beam corresponding to the first reference signal includes a thin beam; Based on a preset rule, generate a mapping relationship between the multiple reference signal indication information and the multiple PUSCH opportunities; Determine the target reference signal indication information, and after determining the PUSCH opportunity corresponding to the target reference signal indication information from the multiple PUSCH opportunities based on the target reference signal indication information and the mapping relationship, send PUSCH at the PUSCH opportunity corresponding to the target reference signal indication information through the beam corresponding to the first reference signal indicated by the target reference signal indication information.

2. The method according to claim 1, characterized in that The multiple PUSCH opportunities are included in multiple PUSCH configuration authorization periods, and the first configuration information is further used to configure resources of multiple second reference signals and the number of reference signal indication information corresponding to the multiple PUSCH configuration authorization periods; The preset rule is: for multiple PUSCH opportunities in the multiple PUSCH configuration authorization periods, according to the ascending order of resource indexes of the multiple second reference signals and the ascending order of indexes of the PUSCH configuration authorization period, obtain multiple sequentially arranged PUSCH configuration authorization periods; according to the order of obtaining reference signal indication information and the number of reference signal indication information corresponding to each PUSCH configuration authorization period, establish a mapping relationship between the multiple reference signal indication information and the multiple sequentially arranged PUSCH configuration authorization periods.

3. The method according to claim 1, characterized in that The multiple PUSCH opportunities are included in multiple PUSCH configuration authorization periods, and the first configuration information is further used to configure the number of reference signal indication information corresponding to each PUSCH opportunity in the multiple PUSCH configuration authorization periods; The preset rule is: according to the number of reference signal indication information corresponding to each PUSCH opportunity and in accordance with the order in which the reference signal indication information is acquired, a mapping relationship between the multiple reference signal indication information and the multiple PUSCH opportunities is established.

4. The method according to claim 3, characterized in that The first configuration information is further used to configure resources of multiple second reference signals, where resource indexes of the multiple second reference signals correspond to the multiple PUSCH opportunities, and the method further includes: According to the increasing order of resource indexes of the multiple second reference signals and the increasing order of the PUSCH configuration authorization period index, the multiple PUSCH opportunities are sorted to obtain a plurality of sequentially arranged PUSCH opportunities, and the plurality of sequentially arranged PUSCH opportunities are used to generate a mapping relationship between the plurality of reference signal indication information and the plurality of PUSCH opportunities.

5. The method according to claim 1, characterized in that The first configuration information is further used to configure at least one synchronization signal and an index of each SSB in a physical layer broadcast channel block SSB, and the number of reference signal indication information corresponding to each SSB; The preset rule is: according to the number of reference signal indication information corresponding to each of the SSBs, according to the acquisition order of the reference signal indication information and the acquisition order of the SSBs, a mapping relationship between the multiple reference signal indication information and the multiple PUSCH opportunities is established.

6. The method according to claim 5, characterized in that The first configuration information is further used to configure resources of multiple second reference signals, where resource indexes of the multiple second reference signals correspond to the multiple PUSCH opportunities, and the method further includes: According to the order of acquisition of the at least one SSB, the ascending order of the resource indexes of the multiple second reference signals, and the ascending order of the PUSCH configuration authorization period index, the multiple PUSCH opportunities are sorted to obtain a plurality of sequentially arranged PUSCH opportunities, and the plurality of sequentially arranged PUSCH opportunities are used to generate a mapping relationship between the plurality of reference signal indication information and the plurality of PUSCH opportunities.

7. The method according to any one of claims 2 to 6, characterized in that: The first configuration information is also used to configure the multiple PUSCH configuration authorization periods.

8. The method according to claim 2, 4 or 6, characterized in that: The method further comprises: The multiple PUSCH configuration grant period indexes are determined according to the number of the multiple reference signal indication information and the resource indexes of the multiple second reference signals.

9. The method according to any one of claims 1 to 8, characterized in that One of the plurality of reference signal indication information corresponds to at least one of the plurality of PUSCH opportunities.

10. The method according to any one of claims 1 to 9, characterized in that Different PUSCH opportunities among the multiple PUSCH opportunities correspond to the same amount of reference signal indication information.

11. The method according to any one of claims 1 to 9, characterized in that Different PUSCH opportunities among the multiple PUSCH opportunities correspond to different amounts of reference signal indication information.

12. The method according to any one of claims 1 to 11, characterized in that: The signal quality of the first reference signal indicated by the target reference signal indication information is the best, or the signal quality of the first reference signal indicated by the target reference signal indication information is greater than a first threshold.

13. The method according to any one of claims 1 to 12, characterized in that: The reference signal indication information includes at least one of a transmission configuration indicator state TCI state or a reference signal identifier ID.

14. A communication method, characterized in that: The method comprises: Determine first configuration information, where the first configuration information is used to configure multiple reference signal indication information and multiple physical uplink shared channel PUSCH opportunities; the reference signal indication information is used to indicate at least one first reference signal, and the beam corresponding to the first reference signal includes a thin beam; Send the first configuration information.

15. The method according to claim 14, characterized in that The first configuration information is further used to configure at least one of the following: resource indexes of multiple second reference signals, the multiple PUSCH configuration authorization periods, the number of reference signal indication information corresponding to the multiple PUSCH configuration authorization periods, the number of reference signal indication information corresponding to each PUSCH opportunity in the multiple PUSCH configuration authorization periods, the index of each SSB in at least one synchronization signal and a physical layer broadcast channel block SSB, or the number of reference signal indication information corresponding to each SSB, One PUSCH configuration grant period among the plurality of PUSCH configuration grant periods includes at least one PUSCH opportunity among the plurality of PUSCH opportunities.

16. The method according to claim 14 or 15, characterized in that The reference signal indication information includes at least one of a transmission configuration indicator state TCI state or a reference signal identifier ID.

17. The method according to any one of claims 14 to 16, characterized in that: The method further comprises: A PUSCH is received on the plurality of PUSCH opportunities.

18. A communication device, characterized in that: The method comprises a unit or module for executing the method according to any one of claims 1 to 13, or comprises a unit or module for executing the method according to any one of claims 14 to 17.

19. A communication device, characterized in that: include: A processor, the processor is coupled to a memory, the memory is used to store programs or instructions, when the program or instructions are executed by the processor, the device executes the method as claimed in any one of claims 1 to 13, or executes the method as claimed in any one of claims 14 to 17.

20. A computer-readable storage medium having a computer program or instruction stored thereon, characterized in that: When the computer program or instruction is executed, the computer executes the method according to any one of claims 1 to 13, or the method according to any one of claims 14 to 17.

21. A computer program product, comprising computer program code, characterized in that: When the computer program code is executed on a computer, the computer is enabled to implement the method according to any one of claims 1 to 13, or to implement the method according to any one of claims 14 to 17.

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