A communication method and apparatus

Abstract

The application provides a communication method and device, which can accurately deliver messages and improve user experience. The method comprises the following steps: a terminal device receives a first beam list, the first beam list is used to indicate at least one beam; and in the case that the first beam is included in the at least one beam, the terminal device receives a first message and / or indicates the first message to a user; wherein the terminal device is located in the coverage range of the first beam, and the first message is associated with the first beam list.

Description

Technical Field

[0001] This application relates to the field of communication technology, and in particular to a communication method and apparatus. Background Technology

[0002] In the public warning systems (PWS) transmission mode of non-terrestrial networks (NTN), when the terminal device needs to determine that it is within a preset warning area based on satellite positioning signals, it instructs the user to send warning information from the network device.

[0003] When a terminal device lacks location tracking capabilities, or is unable to locate itself under poor transmission conditions, it cannot obtain its own location information or determine whether it is within a warning area. Currently, in scenarios where the terminal device cannot determine whether it is within a warning area, it typically still sends a warning message to the user by default. This may cause users who are actually outside the warning area to receive a warning message, leading to unnecessary panic and alarm, and ultimately reducing the user experience. Summary of the Invention

[0004] This application provides a communication method and apparatus that can accurately transmit warning information and improve the user experience.

[0005] In a first aspect, this application provides a communication method applied to a terminal device, the method comprising: receiving a first beam list, the first beam list indicating at least one beam; and, if the first beam is included in the at least one beam, receiving a first message and / or indicating the first message to a user; wherein the terminal device is located within the coverage area of ​​the first beam, and the first message is associated with the first beam list.

[0006] In the above design, by configuring a beam list, terminal devices within the coverage area of ​​the beam list can receive and / or indicate messages (such as warning messages) corresponding to the beam list. This enables accurate message delivery without the need for location tracking, thereby improving user experience and reducing the probability of network congestion.

[0007] In one possible design, the first message may include a warning message or system information.

[0008] In one possible design, the first message includes system information, and the method further includes: receiving an update instruction for a first system information block; and updating the first system information block according to the system information included in the first message. This design allows only terminal devices within the coverage area corresponding to the beam list to receive the updated system information, thus saving reception power for terminal devices outside the coverage area of ​​the beam list.

[0009] In one possible design, the coverage area of ​​the beams corresponding to the first beam list is included within the coverage area of ​​the serving cell of the terminal device. This design allows terminal devices with partial beam coverage within the cell to receive the first message, saving energy consumption for receiving messages from other terminal devices within the cell, and making message transmission more flexible.

[0010] In one possible design, receiving the first beam list includes: receiving multiple beam lists, each beam list corresponding to multiple cells, the first beam list being included in the multiple beam lists, and the serving cell of the terminal device being included in the multiple cells. This design facilitates the terminal device's ability to determine whether to receive or instruct messages associated with the beam list based on its current beam during cell handover scenarios.

[0011] One possible design also includes receiving the identifier of the cell corresponding to each of the multiple beam lists. This design helps the terminal device distinguish the beam coverage area indicated by the beam lists in different cells, and thus quickly determine whether its own beam is included in the corresponding beam list.

[0012] In one possible design, the multiple beam lists are associated with different warning messages, or the multiple beam lists are associated with different system information. This design allows for flexible mapping between messages and beam list coverage areas. For warning messages, the beam list can also be understood as a warning area, thus enabling flexible mapping between warning messages and warning areas.

[0013] In one possible design, the first beam list includes an index of each of the at least one beams, the beam index including at least one of the following: a Synchronization Signal Block (SSB) index number, a Partial Bandwidth (BWP) index number, or a Transmission Configuration Indicator (TCI) index number.

[0014] In one possible design, before receiving the first beam list, the method further includes: determining that the location information of the terminal device has not been obtained.

[0015] Optionally, the terminal device may also receive priority information from the network device, which indicates that the priority of the first method is higher than the priority of the second method. The first method indicates that the terminal device determines whether to indicate a warning message to the user based on location, and the second method indicates that the terminal device determines whether to indicate a warning message to the user based on beam.

[0016] In one possible design, the first message includes a warning message, and the first beam list is carried on the Physical Downlink Control Channel (PDCCH) or a second system information block.

[0017] In one possible design, the first message includes system information, the first beam list is carried in a third system information block, and the first message is carried in a fourth system information block. In another possible design, the first message includes system information, and the first beam list and the first message are carried in a first system information block. This design eliminates the need to schedule different resources for different terminal devices based on the beam list, saving signaling overhead for resource scheduling and reducing the complexity of system scheduling.

[0018] Secondly, this application provides a communication method applied to a network device, the method comprising: sending a first beam list to a terminal device, the first beam list indicating at least one beam; and sending a first message associated with the first beam list to the terminal device, the first message including warning information or system information.

[0019] In one possible design, the first message includes system information, and the method further includes:

[0020] Send an update instruction for the first system information block, wherein the system information included in the first message is used for updating the first system information block.

[0021] In one possible design, the coverage area of ​​the beam corresponding to the first beam list is included in the coverage area of ​​the serving cell of the terminal device.

[0022] In one possible design, sending the first beam list to the terminal device includes: sending multiple beam lists to the terminal device, the multiple beam lists corresponding to multiple cells, the first beam list being included in the multiple beam lists, and the serving cell of the terminal device being included in the multiple cells.

[0023] In one possible design, the method further includes sending the identifier of the cell corresponding to each of the plurality of beam lists to the terminal device.

[0024] In one possible design, before sending the first beam list to the terminal device, the method further includes: receiving multiple beam lists from a core network device, and warning information or system information associated with each beam list in the multiple beam lists, the multiple beam lists including the first beam list.

[0025] In one possible design, the multiple beam lists are associated with different warning messages, or the multiple beam lists are associated with different system information.

[0026] In one possible design, the first beam list includes an index of each of the at least one beams, the beam index including at least one of the following: a Synchronization Signal Block (SSB) index number, a Partial Bandwidth (BWP) index number, or a Transmission Configuration Indicator (TCI) index number.

[0027] In one possible design, the first message includes a warning message, and the first beam list is carried on the Physical Downlink Control Channel (PDCCH) or a second system information block.

[0028] In one possible design, the first message includes system information, the first beam list is carried in a third system information block, and the first message is carried in a fourth system information block.

[0029] In one possible design, the first message includes system information, and the first beam list and the first message are carried in a fifth system information block.

[0030] Thirdly, this application provides a communication method applied to a network device, comprising: receiving a first area and a warning message associated with the first area from a core network device; and sending a first beam list and the warning message to a terminal device, wherein the beam coverage area corresponding to the first beam list is included in the first area.

[0031] In the above design, the network device maps the warning area (the first area associated with the warning information) indicated by the core network device to a beam list and indicates the beam list to the terminal device. This enables accurate message transmission without the need for the terminal device to locate the device, thereby improving the user experience and reducing the probability of network congestion.

[0032] In one possible design, the beam coverage area corresponding to the first beam list is included in the coverage area of ​​the network device, or the beam coverage area corresponding to the first beam list is included in the coverage area of ​​the first cell of the network device, where the first cell is the serving cell of the terminal device.

[0033] In one possible design, the first beam list includes an index of each of the at least one beams, the beam index including at least one of the following: a Synchronization Signal Block (SSB) index number, a Partial Bandwidth (BWP) index number, or a Transmission Configuration Indicator (TCI) index number.

[0034] In one possible design, the first beam list is carried on the physical downlink control channel (PDCCH) or system information block.

[0035] Fourthly, this application provides a communication device, which can be a terminal device, a device, module, or chip within the terminal device, or a device compatible with the terminal device. In one design, the communication device may include modules corresponding to the methods / operations / steps / actions described in the first aspect. These modules can be hardware circuits, software, or a combination of hardware circuits and software. In another design, the communication device may include a processing module and a communication module, the communication module including a transmitting unit and a receiving unit. Optionally, the communication module can also be described as a transceiver module or transceiver unit, and the processing module can also be described as a processing unit. Optionally, when the communication device is a chip within the terminal device, the communication module can also be described as an input / output circuit or a communication interface for performing input operations (corresponding to receiving operations) and output operations (corresponding to transmitting operations); the processing module can also be described as a processor, such as an integrated processor, microprocessor, or integrated circuit.

[0036] The following description uses the example of a communication device that includes a processing module and a communication module.

[0037] A communication module is configured to receive a first beam list, the first beam list being used to indicate at least one beam;

[0038] If the processing module determines that the first beam is included in the at least one beam, the communication module is further configured to receive a first message and / or indicate the first message to the user; wherein the terminal device is located within the coverage area of ​​the first beam, and the first message is associated with the first beam list.

[0039] In one possible design, the first message may include a warning message or system information.

[0040] In one possible design, the first message includes system information; the communication module is further configured to receive an update instruction for the first system information block; and the processing module is further configured to update the first system information block according to the system information included in the first message.

[0041] In one possible design, the coverage area of ​​the beam corresponding to the first beam list is included in the coverage area of ​​the serving cell of the terminal device.

[0042] In one possible design, the communication module, when used to receive the first beam list, is specifically used to: receive multiple beam lists, the multiple beam lists corresponding to multiple cells, the first beam list being included in the multiple beam lists, and the serving cell of the terminal device being included in the multiple cells.

[0043] In one possible design, the communication module is also used to receive the identifier of the cell corresponding to each of the multiple beam lists.

[0044] In one possible design, the multiple beam lists are associated with different warning messages, or the multiple beam lists are associated with different system information.

[0045] In one possible design, the first beam list includes an index of each of the at least one beams, the beam index including at least one of the following: a Synchronization Signal Block (SSB) index number, a Partial Bandwidth (BWP) index number, or a Transmission Configuration Indicator (TCI) index number.

[0046] In one possible design, the processing module is also configured to determine that the location information of the terminal device has not been obtained before the communication module receives the first beam list.

[0047] Optionally, the communication module is also used to receive priority information from the network device, which indicates that the priority of the first mode is higher than the priority of the second mode. The first mode indicates that the terminal device determines whether to indicate a warning message to the user based on the location, and the second mode indicates that the terminal device determines whether to indicate a warning message to the user based on the beam.

[0048] In one possible design, the first message includes a warning message, and the first beam list is carried on the Physical Downlink Control Channel (PDCCH) or a second system information block.

[0049] In one possible design, the first message includes system information, the first beam list is carried in a third system information block, and the first message is carried in a fourth system information block. In another possible design, the first message includes system information, and the first beam list and the first message are carried in a first system information block.

[0050] Fifthly, this application provides a communication device, which can be a network device, a device, module, or chip within a network device, or a device compatible with a network device. In one design, the communication device may include modules corresponding to the methods / operations / steps / actions described in the second aspect. These modules can be hardware circuits, software, or a combination of hardware circuits and software. In another design, the communication device may include a processing module and a communication module, the communication module including a transmitting unit and a receiving unit. Optionally, the communication module can also be described as a transceiver module or transceiver unit, and the processing module can also be described as a processing unit. Optionally, when the communication device is a chip within a network device, the communication module can also be described as an input / output circuit or communication interface for performing input operations (corresponding to receiving operations) and output operations (corresponding to transmitting operations); the processing module can also be described as a processor, such as an integrated processor, microprocessor, or integrated circuit.

[0051] The following description uses the example of a communication device that includes a processing module and a communication module.

[0052] The communication module, under the control of the processing module, performs the following operations:

[0053] Send a first beam list to the terminal device, the first beam list being used to indicate at least one beam;

[0054] Send a first message associated with the first beam list to the terminal device. The first message includes warning information or system information.

[0055] In one possible design, the first message includes system information, a communication module, and is also used to send an update indication for a first system information block, wherein the system information included in the first message is used for updating the first system information block.

[0056] In one possible design, the coverage area of ​​the beam corresponding to the first beam list is included in the coverage area of ​​the serving cell of the terminal device.

[0057] In one possible design, when the communication module sends the first beam list to the terminal device, it is specifically configured to: send multiple beam lists to the terminal device, the multiple beam lists corresponding to multiple cells, the first beam list being included in the multiple beam lists, and the serving cell of the terminal device being included in the multiple cells.

[0058] In one possible design, the communication module is also used to send the identifier of the cell corresponding to each of the plurality of beam lists to the terminal device.

[0059] In one possible design, the communication module is further configured to receive multiple beam lists from the core network device, and warning information or system information associated with each beam list in the multiple beam lists, including the first beam list, before sending the first beam list to the terminal device.

[0060] In one possible design, the multiple beam lists are associated with different warning messages, or the multiple beam lists are associated with different system information.

[0061] In one possible design, the first beam list includes an index of each of the at least one beams, the beam index including at least one of the following: a Synchronization Signal Block (SSB) index number, a Partial Bandwidth (BWP) index number, or a Transmission Configuration Indicator (TCI) index number.

[0062] In one possible design, the first message includes a warning message, and the first beam list is carried on the Physical Downlink Control Channel (PDCCH) or a second system information block.

[0063] In one possible design, the first message includes system information, the first beam list is carried in a third system information block, and the first message is carried in a fourth system information block.

[0064] In one possible design, the first message includes system information, and the first beam list and the first message are carried in a fifth system information block.

[0065] Sixthly, this application provides a communication device, which can be a network device, a device, module, or chip within a network device, or a device compatible with a network device. In one design, the communication device may include modules corresponding to the methods / operations / steps / actions described in the third aspect. These modules can be hardware circuits, software, or a combination of hardware circuits and software. In another design, the communication device may include a processing module and a communication module, the communication module including a transmitting unit and a receiving unit. Optionally, the communication module can also be described as a transceiver module or transceiver unit, and the processing module can also be described as a processing unit. Optionally, when the communication device is a chip within a network device, the communication module can also be described as an input / output circuit or communication interface for performing input operations (corresponding to receiving operations) and output operations (corresponding to transmitting operations); the processing module can also be described as a processor, such as an integrated processor, microprocessor, or integrated circuit.

[0066] The following description uses the example of a communication device that includes a processing module and a communication module.

[0067] The communication module is used to receive warning information from the first area and associated with the first area from the core network equipment;

[0068] The processing module is used to send a first beam list and the warning information to the terminal device through the communication module, wherein the beam coverage area corresponding to the first beam list is included in the first area.

[0069] In one possible design, the beam coverage area corresponding to the first beam list is included in the coverage area of ​​the network device, or the beam coverage area corresponding to the first beam list is included in the coverage area of ​​the first cell of the network device, where the first cell is the serving cell of the terminal device.

[0070] In one possible design, the first beam list includes an index of each of the at least one beams, the beam index including at least one of the following: a Synchronization Signal Block (SSB) index number, a Partial Bandwidth (BWP) index number, or a Transmission Configuration Indicator (TCI) index number.

[0071] In one possible design, the first beam list is carried on the physical downlink control channel (PDCCH) or system information block.

[0072] In a seventh aspect, this application provides a communication device, including at least one processor and a memory; the memory is used to store computer programs or instructions, and when the device is running, the at least one processor executes the computer program or instructions to cause the communication device to either perform a method as described in the first aspect or any possible design of the first aspect, or perform a method as described in the second aspect or any possible design of the second aspect, or perform a method as described in the third aspect or any possible design of the third aspect.

[0073] Eighthly, this application provides another communication device, comprising: a logic circuit and an input / output interface; wherein the input / output interface can be understood as an interface circuit, and the logic circuit can be used to run code instructions to perform a method as described in the first aspect above or any possible design in the first aspect above, or to perform a method as described in the second aspect above or any possible design in the second aspect above, or to perform a method as described in the third aspect above or any possible design in the third aspect above.

[0074] Ninthly, this application also provides a computer-readable storage medium storing computer-readable instructions that, when executed on a computer, cause the computer to perform the method as described in the first aspect or any possible design of the first aspect, or to perform the method as described in the second aspect or any possible design of the second aspect, or to perform the method as described in the third aspect or any possible design of the third aspect.

[0075] In a tenth aspect, this application provides a computer program product containing instructions that, when run on a computer, causes the computer to perform the method as described in the first aspect or any possible design of the first aspect, or to perform the method as described in the second aspect or any possible design of the second aspect, or to perform the method as described in the third aspect or any possible design of the third aspect.

[0076] In one aspect, this application provides a chip system including a processor and further including a memory for implementing the methods in the first aspect or any possible design in the first aspect, or implementing the methods in the second aspect or any possible design in the second aspect, or implementing the methods in the third aspect or any possible design in the third aspect.

[0077] In a twelfth aspect, this application provides a communication system comprising a terminal device and a network device, wherein the terminal device is configured to perform the method described in the first aspect or any possible design of the first aspect, and the network device is configured to perform the method described in the second aspect or any possible design of the second aspect, or to perform the method described in the third aspect or any possible design of the third aspect.

[0078] For the technical effects that can be achieved by the second to twelfth aspects mentioned above, please refer to the description of the technical effects that can be achieved by the first aspect or the corresponding possible design scheme in the first aspect. This application will not repeat them here. Attached Figure Description

[0079] Figure 1A This is one of the architectural diagrams of a wireless communication system;

[0080] Figure 1B This is one of the architectural diagrams of a wireless communication system;

[0081] Figure 1C This is one of the architectural diagrams of a wireless communication system;

[0082] Figure 1D This is one of the architectural diagrams of a wireless communication system;

[0083] Figure 1E This is one of the architectural diagrams of a wireless communication system;

[0084] Figure 1F One of the architectural diagrams of a wireless communication system;

[0085] Figure 2A This is one of the architectural diagrams of PWS;

[0086] Figure 2B This is one of the architectural diagrams of PWS;

[0087] Figure 2C This is one of the architectural diagrams of PWS;

[0088] Figure 3 One of the flowcharts for the communication method provided in the embodiments of this application;

[0089] Figure 4 A schematic diagram illustrating the beam range provided in an embodiment of this application;

[0090] Figure 5 One of the flowcharts for the communication method provided in the embodiments of this application;

[0091] Figure 6A One of the flowcharts for the communication method provided in the embodiments of this application;

[0092] Figure 6B One of the flowcharts for the communication method provided in the embodiments of this application;

[0093] Figure 7 This is one of the structural schematic diagrams of the communication device in the embodiments of this application;

[0094] Figure 8 This is one of the structural schematic diagrams of the communication device in the embodiments of this application. Detailed Implementation

[0095] To make the objectives, technical solutions, and advantages of the embodiments of this application clearer, the embodiments of this application will be further described in detail below with reference to the accompanying drawings.

[0096] The at least one item mentioned in the embodiments of this application refers to one or more items. Multiple items refers to two or more items. "And / or" describes the relationship between related objects, indicating that three relationships can exist. For example, A and / or B can represent: A alone, A and B simultaneously, or B alone. The character " / " generally indicates that the preceding and following related objects have an "or" relationship. Furthermore, it should be understood that although the terms "first," "second," etc., may be used to describe objects in the embodiments of this application, these objects should not be limited to these terms. These terms are only used to distinguish the objects from each other.

[0097] The terms "comprising" and "having," and any variations thereof, used in the following description of embodiments of this application are intended to cover non-exclusive inclusion. For example, a process, method, system, product, or device that includes a series of steps or units is not limited to the listed steps or units, but may optionally include other steps or units not listed, or may optionally include other steps or units inherent to these processes, methods, products, or devices. It should be noted that in embodiments of this application, words such as "exemplary" or "for example" are used to indicate examples, illustrations, or descriptions. Any method or design described as "exemplary" or "for example" in embodiments of this application should not be construed as preferred or advantageous over other methods or designs. Specifically, the use of words such as "exemplary" or "for example" is intended to present the relevant concepts in a concrete manner.

[0098] The technical solutions provided in this application can be applied to fourth-generation (4G) mobile communication systems, such as Long Term Evolution (LTE) systems, or to 5G systems, such as New Radio (NR) systems, or to next-generation mobile communication systems or other similar communication systems, or to satellite mobile communication systems; no specific limitations are imposed. The technical solutions provided in this application can be applied to NTN (Network-to-Network) communication, or to non-NTN (Network-to-Network) communication, such as NR-D2D scenarios, or to vehicle-to-everything (V2X) communication scenarios, such as NR-V2X scenarios. For example, the technical solutions provided in this application can be applied to fields such as factory manufacturing, smart homes, intelligent driving, assisted driving, intelligent connected vehicles, or indoor commercial scenarios.

[0099] This application will present various aspects, embodiments, or features relating to systems that may include multiple devices, components, modules, etc. It should be understood and appreciated that individual systems may include additional devices, components, modules, etc., and / or may not include all the devices, components, modules, etc. discussed in conjunction with the accompanying drawings. Furthermore, combinations of these approaches are also possible.

[0100] Furthermore, in the embodiments of this application, words such as "exemplarily" and "for example" are used to indicate examples, illustrations, or descriptions. Any embodiment or design scheme described as an "example" in this application should not be construed as being more preferred or advantageous than other embodiments or design schemes. Specifically, the use of the term "example" is intended to present concepts in a concrete manner. In the embodiments of this application, "of," "corresponding, relevant," and "corresponding" may sometimes be used interchangeably, and it should be noted that their intended meanings are consistent unless their distinction is emphasized.

[0101] In a communication system, one network element can send signals to or receive signals from another network element. Signals can include information or data; a network element can also be referred to as an entity, network entity, device, communication device, communication module, node, communication node, etc. This application describes the system using a device as an example. For instance, a communication system can include at least one terminal device and at least one network device. The signal transmitting device can be a network device, and the signal receiving device can be a terminal device; or, the signal transmitting device can be a terminal device, and the signal receiving device can be a network device. Furthermore, it is understood that if the communication system includes multiple terminal devices, these terminal devices can also exchange signals; that is, both the signal transmitting device and the signal receiving device can be terminal devices.

[0102] Figure 1A An exemplary schematic diagram of the architecture of a communication system 1000 to which this application embodiment applies is shown. For example... Figure 1A As shown, the communication system includes a wireless access network 100 and a core network 200. Optionally, the communication system 1000 may also include an Internet 300. The wireless access network 100 may include at least one wireless access network device (such as...). Figure 1A 110a and 110b in the above), may also include at least one terminal device (such as Figure 1A (Referring to 120a-120j in the original text). Terminal devices connect wirelessly to wireless access network (WLAN) devices, which in turn connect wirelessly or via wired connections to the core network. The core network devices and WLAN devices can be independent physical devices, or they can integrate the functions of the core network devices and the logical functions of the WLAN devices onto a single physical device. Alternatively, a single physical device can integrate some core network device functions and some WLAN device functions. Terminal devices and WLAN devices can be interconnected via wired or wireless connections. Figure 1A This is just an illustration; the communication system may also include other network devices, such as wireless repeaters and wireless backhaul devices. Figure 1A It is not shown in the middle.

[0103] The network devices involved in the embodiments of this application include, for example, radio access network (RAN) devices. RAN devices can be base stations, evolved NodeBs (eNodeBs), transmission reception points (TRPs), transmission points (TPs), next-generation NodeBs (gNBs) in 5G mobile communication systems, base stations in future mobile communication systems, or access nodes in WiFi systems; they can also be modules or units that perform some of the functions of a base station, for example, they can be central units (CUs), distributed units (DUs), or radio units (RUs). The CU (Radio Control Unit) performs the functions of the Radio Resource Control Protocol (RRC) and Packet Data Convergence Protocol (PDCP) of the base station, and can also perform the functions of the Service Data Adaptation Protocol (SDAP). The DU (Radio Link Control Unit) performs the functions of the Radio Link Control (RRC) and Medium Access Control (MAC) layers of the base station, and can also perform some or all of the physical layer functions. For specific descriptions of the above-mentioned protocol layers, please refer to the relevant technical specifications of the 3rd Generation Partnership Project (3GPP). The CU and DU can be set up separately or included in the same network element, such as in the baseband unit (BBU). The RU (Radio Receiver Unit) can be included in radio frequency equipment or radio frequency units, such as in the remote radio unit (RRU), active antenna unit (AAU), or remote radio head (RRH). In different systems, the CU, DU, or RU may also have different names, but those skilled in the art will understand their meaning. For example, in an open radio access network (ORAN) system, a CU can also be called an open CU (open-CU, O-CU), a DU can also be called an open DU (open-DU, O-DU), and a RU can also be called an open RU (open-RU, O-RU).In this application, any of the following units—CU (or CU control plane (CU-CP), CU user plane (CU-UP), DU, and RU)—can be implemented through software modules, hardware modules, or a combination of software and hardware modules. CU-CP can also be called open-CU-CP (O-CU-CP), and CU-UP can also be called open-CU-UP (O-CU-UP).

[0104] Communication between network devices and terminal devices can follow a specific protocol layer structure. For example, this protocol layer structure may include a control plane protocol layer structure and a user plane protocol layer structure. For instance, the control plane protocol layer structure may include at least one of the following: a radio resource control (RRC) layer, a packet data convergence protocol (PDCP) layer, a radio link control (RLC) layer, a media / medium access control (MAC) layer, or a physical (PHY) layer. Similarly, the user plane protocol layer structure may include at least one of the following: a service data adaptation protocol (SDAP) layer, a PDCP layer, an RLC layer, a MAC layer, or a physical layer.

[0105] At the physical layer, uplink communication can include the transmission of uplink physical channels and uplink signals. Uplink physical channels include the Physical Random Access Channel (PRACH), Physical Uplink Control Channel (PUCCH), and Physical Uplink Shared Channel (PUSCH), etc. Uplink signals include the Sounding Reference Signal (SRS), the PUCCH Demodulation Reference Signal (PUCCH-DMRS), the PUSCH Demodulation Reference Signal (PUSCH-DMRS), the Demodulation Reference Signal (DMRS), the Phase Tracking Reference Signal (PTRS), and the Positioning Reference Signal (SRS), etc. The Positioning Reference Signal, for example, is the SRS for Positioning or the Positioning SRS.

[0106] At the physical layer, downlink communication can include the transmission of downlink physical channels and downlink signals. Downlink physical channels include the physical broadcast channel (PBCH), physical downlink control channel (PDCCH), physical downlink shared channel (PDSCH), etc. Downlink signals include the primary synchronization signal (PSS) / secondary synchronization signal (SSS), physical downlink control demodulation reference signal (PDCCH-DMRS), physical downlink shared channel demodulation reference signal (PDSCH-DMRS), DMRS, PTRS, CSI-RS, cell reference signal (CRS), tracking reference signal (TRS), positioning reference signal (positioning RS), synchronization signal block (SSB), etc.

[0107] Please refer to Figure 1B This is a schematic diagram of an O-RAN system architecture provided in an embodiment of this application. The O-RAN system in the embodiments provided in this application may include... Figure 1B Other components besides those shown. For example... Figure 1BAs shown, the access network equipment (RAN, such as an eNB, gNB, or next-generation access network equipment) communicates with the core network (CN) equipment via a backhaul link and with the user equipment (UE) via an air interface. For example, the baseband unit (BBU) in the access network equipment communicates with the core network via a backhaul link, and the radio unit (RU) in the access network equipment communicates with at least one UE via an air interface. The BBU communicates with at least one RU via a fronthaul link. The BBU and RU may be co-located or not. The BBU includes at least one control unit (CU) and at least one distributed unit (DU), which can communicate via at least one midhaul link. In the embodiments of this application, the first communication device can configure information of the auxiliary communication device to the terminal device (e.g., UE), and can also send signaling to the terminal device for activating or deactivating one or more communication devices. The sending of these signaling messages can be done by the CU and / or DU in the first communication device to the terminal device.

[0108] Please refer to Figure 1C This is a schematic diagram of an O-RAN system architecture provided in an embodiment of this application. Figure 1C As shown, O-RAN can include O-CU-CP, O-CU-UP, O-DU, and O-RU. The system architecture can also include an open cloud (O-cloud), a service management and orchestration framework, an open eNB (O-eNB), a near-real-time (RT) RAN Intelligent Controller (RIC), and a non-real-time RIC. The non-RTIC can manage, configure, manage, and control radio resources of at least one of multiple O-CU-CP, O-CU-UP, DU, or O-eNB. Figure 1CAs shown, the interfaces defined by 3GPP include, for example, E1, F1 (e.g., F1-c, F1-u), NG (e.g., NG-c, NG-u), Xn (e.g., Xn-c, Xn-u), and X2 (e.g., X2-c, X2-u). For example, O-RAN communication systems also include interfaces such as O1, O2, E2, A1, and Open Fronthaul (FH) interfaces (e.g., Open-FH Control (M)-plane, and Open-FH Control, User and Synchronization (CUS)-plane). Figure 1C The names of the interfaces and the connection methods of the units shown are examples. In actual applications, the O-RAN system may include more or fewer interfaces, or more or fewer units.

[0109] Wireless access network equipment can be macro base stations (such as...) Figure 1A 110a in the text), can also be a micro base station or an indoor station (such as... Figure 1A 110b) in the text can also be a relay node or a donor node, etc. The embodiments of this application do not limit the specific technology or device form used in the wireless access network equipment. For ease of description, the following description uses a base station as an example of a wireless access network device.

[0110] Terminal devices can also be referred to as user equipment (UE), mobile stations, mobile terminal devices, etc. Terminal devices can be widely used in various scenarios, such as device-to-device (D2D), vehicle-to-everything (V2X) communication, machine-type communication (MTC), Internet of Things (IoT), virtual reality, augmented reality, industrial control, autonomous driving, telemedicine, smart grids, smart furniture, smart offices, smart wearables, smart transportation, smart cities, etc. Terminal devices can be mobile phones, tablets, computers with wireless transceiver capabilities, wearable devices, vehicles, drones, helicopters, airplanes, ships, robots, robotic arms, smart home devices, sensors, etc. The embodiments of this application do not limit the specific technologies or device forms used in the terminal devices.

[0111] The aforementioned terminal devices can establish connections with the operator's network through interfaces provided by the operator's network (such as N1), and use data and / or voice services provided by the operator's network. The terminal devices can also access the Domain Name System (DNS) through the operator's network, and use operator services deployed on the DNS, and / or services provided by third parties. These third parties can be service providers outside of the operator's network and the terminal devices, and can provide other data and / or voice services to the terminal devices. The specific form of these third parties can be determined according to the actual application scenario and is not limited here.

[0112] Terminal devices can also be referred to as terminals, user equipment (UE), mobile stations, mobile terminal devices, etc. Terminal devices can be widely used in various scenarios, such as device-to-device (D2D), vehicle-to-everything (V2X) communication, machine-type communication (MTC), Internet of Things (IoT), virtual reality, augmented reality, industrial control, autonomous driving, telemedicine, smart grids, smart furniture, smart offices, smart wearables, smart transportation, smart cities, etc. Terminal devices can be mobile phones, tablets, computers with wireless transceiver capabilities, wearable devices, vehicles, drones, helicopters, airplanes, ships, robots, robotic arms, smart home devices, roadside units (RSUs), etc. The embodiments of this application do not limit the specific technologies or device forms used in the terminal devices.

[0113] Base stations and terminal equipment can be fixed or mobile. They can be deployed on land, including indoors or outdoors, handheld or vehicle-mounted; on water; or in the air on aircraft, balloons, and satellites. The embodiments of this application do not limit the application scenarios of the base stations and terminal equipment.

[0114] The roles of base stations and terminal devices can be relative, for example, Figure 1AThe helicopter or drone 120i can be configured as a mobile base station. For terminal devices 120j that access the wireless access network 100 via 120i, terminal device 120i is a base station; however, for base station 110a, 120i is a terminal device, meaning that 110a and 120i communicate via a wireless air interface protocol. Of course, 110a and 120i can also communicate via a base station-to-base station interface protocol; in this case, 120i is also a base station relative to 110a. Therefore, both base stations and terminal devices can be collectively referred to as communication devices. Figure 1A The 110a and 110b in the text can be referred to as communication devices with base station functions. Figure 1A The 120a-120j in the text can be referred to as communication devices with terminal equipment functions.

[0115] Communication between base stations and terminal devices, between base stations, and between terminal devices can be conducted using licensed spectrum, unlicensed spectrum, or both simultaneously. Communication can be conducted using spectrum below 6 GHz, spectrum above 6 GHz, or both simultaneously. The embodiments of this application do not limit the spectrum resources used for wireless communication.

[0116] In the embodiments of this application, the functions of the base station can be executed by modules (such as chips) within the base station, or by a control subsystem that includes base station functions. This control subsystem, including base station functions, can be a control center in the aforementioned application scenarios such as smart grids, industrial control, intelligent transportation, and smart cities. Similarly, the functions of the terminal device can be executed by modules (such as chips or modems) within the terminal device, or by a device that includes terminal device functions.

[0117] In this application, the base station sends downlink signals or downlink information to the terminal device, with the downlink information carried on the downlink channel; the terminal device sends uplink signals or uplink information to the base station, with the uplink information carried on the uplink channel. In order to communicate with the base station, the terminal device needs to establish a radio connection with a cell controlled by the base station. The cell with which the terminal device has established a radio connection is called the serving cell of that terminal device.

[0118] The core network involved in this application embodiment may include equipment for processing and forwarding signaling and data of terminals, with terminals accessing the core network through base stations. For example, the core network may include core network equipment such as access and mobility management functions (AMF), session management functions (SMF), user plane gateways, and location management equipment. The user plane gateway can be a server with functions such as mobility management, routing, and forwarding of user plane data, generally located on the network side, such as a serving gateway (SGW), packet data network gateway (PGW), or user plane function (UPF). AMF and SMF are equivalent to the mobility management entity (MME) in a long-term evolution (LTE) system. AMF is mainly responsible for admissions, while SMF is mainly responsible for session management. Of course, the core network may also include other network elements, which are not listed here.

[0119] Please refer to Figure 1D and Figure 1E This diagram illustrates the network architecture of several communication systems applicable to embodiments of this application. The communication system may include satellites, network devices, and terminal devices. It may also include gateways and core network devices. Figure 1D and Figure 1E An exemplary network architecture combining NTN and terrestrial networks is illustrated below. This will be described in conjunction with the accompanying drawings.

[0120] The satellite can be a highly elliptical orbit (HEO) satellite, a geostationary earth orbit (GEO) satellite, a medium earth orbit (MEO) satellite, or a low-earth orbit (LEO) satellite. In the embodiments of this application, the satellite's operating mode can be transparent mode, such as... Figure 1D As shown; alternatively, the satellite's operating mode can also be regenerative mode, such as... Figure 1E As shown, the embodiments in this application do not limit this.

[0121] When a satellite operates in transparent relay mode, it provides transparent forwarding functionality. A gateway functions as a network device (e.g., a base station) or partially functions as one, and in this case, the gateway can be considered a network device (e.g., a base station). Alternatively, the network device (e.g., the base station) can be deployed separately from the gateway. In this case, the feeder link latency includes both the latency from the satellite to the gateway and the latency from the gateway to the gNB. The transparent relay mode discussed later assumes that the gateway and gNB are located together or close to each other. For cases where the gateway and gNB are far apart, the feeder link latency is simply the sum of the latency from the satellite to the gateway and the latency from the gateway to the gNB.

[0122] When a satellite is operating in regeneration mode, it has data processing capabilities and functions as a network device (such as a base station) or partially functions as a network device (such as a base station). In this case, the satellite can be regarded as a network device (such as a base station).

[0123] Satellites can communicate wirelessly with terminals via broadcast communication signals and navigation signals. Optionally, each satellite can provide communication, navigation, and positioning services to terminal devices through multiple beams. For example, each satellite uses multiple beams to cover the service area, and the relationship between different beams can be one or more of time-division, frequency-division, and space-division.

[0124] A gateway (also known as a ground station, earth station, or gateway) is a network device used to connect satellites and ground-based networks (such as ground base stations). One or more satellites can connect to one or more ground-based network devices (such as ground base stations) through one or more gateways; this is not a limitation. The link between a satellite and a terminal is called a service link, and the link between a satellite and a gateway is called a feeder link. Network devices can be deployed separately from gateways; therefore, the latency of the feeder link can include both the latency from the satellite to the gateway and the latency from the gateway to the network device.

[0125] The network devices in this application embodiment may include network devices deployed on satellites (such as satellite base stations), network devices deployed on gateways, or network devices deployed on the ground (such as ground base stations). For example, the network devices may be as described above. Figure 1A , Figure 1B and Figure 1C The RAN nodes shown are examples of this. Please refer to the preceding description for related details, which will not be repeated here.

[0126] Core network equipment is a device located on the ground that can communicate with NTN devices within the NTN system. For example, CN could be... Figure 1A , Figure 1B and Figure 1CThe relevant CNs are described above and will not be repeated here.

[0127] The terminal can be Figure 1A , Figure 1B and Figure 1C The terminals involved are described above and will not be repeated here.

[0128] The embodiments of this application can also be applied to other communication system architectures, such as air-to-ground (ATG) communication systems, which include at least one network device and at least one high-altitude terminal. High-altitude terminals include, for example, high-altitude aircraft and onboard terminals. Figure 1D and Figure 1E The satellites in the relay system can also be replaced with other relay equipment, such as high altitude platform stations (HAPS) and other NTN equipment. Figure 1D or Figure 1E The communication system shown is merely an example and does not limit the communication systems to which the methods provided in the embodiments of this application are applicable. For example, please refer to... Figure 1F This is a schematic diagram of a network architecture for another communication system applicable to embodiments of this application. The communication system includes at least one network device and at least one high-altitude terminal device. High-altitude terminal devices may include, for example, high-altitude aircraft and onboard terminal devices.

[0129] This application relates to a public warning system (PWS) architecture.

[0130] For example Figure 2AThis illustration shows a PWS architecture that includes a cell broadcast center function (CBCF) network element, a public warning system interworking function (PWS-IWF) network element, an AMF network element, a RAN node, and a UE. CBCF is a network function within the 5G core network. The CBCF network element can connect to one or more AMF network elements. The CBCF network element is responsible for managing Cell Broadcast Service (CBS) messages, including one or more of the following: sequence number allocation; modifying or deleting CBS messages held by RAN nodes (such as NG-RAN nodes); initiating broadcasts by sending fixed-length CBS messages to RAN nodes for each language provided by the cell, and padding the page to 82 octets if necessary; determining the set of cells to which CBS messages should be broadcast and indicating the geographical scope of each CBS message within the sequence number; determining when CBS messages should begin broadcasting; determining when CBS message broadcasting should stop and subsequently instructing each RAN node to stop broadcasting CBS messages; determining the period at which CBS message broadcasts should be repeated; and assigning an "emergency indication" to distinguish CBS messages from ordinary CBS messages when CBS sends an emergency message, including "cell identifier / service area identifier list," "warning type," and "warning message." If the "warning type" is "test," only UEs specifically designed for testing purposes can display the warning information. CBCF network elements support service-based interfaces. CBCF network elements use AMF's communication services to forward warning information to RAN nodes and subscribe to receive notifications related to sending warning information. AMF can be associated with one or more CBCF interfaces. For example, if AMF is allowed to have HTTP / 2 application layer association with one or more CBCFs, AMF can connect to multiple NG-RAN node interfaces.

[0131] For example Figure 2B This illustration shows a PWS architecture that includes CBCF network elements, cell broadcast entities (CBE), AMF network elements, RAN nodes, and UEs. The CBE is responsible for processing CBS message formatting, such as dividing the CBS message into multiple sub-blocks.

[0132] For example Figure 2CThis illustration shows a PWS architecture including a PWS-IWF, a cell broadcast center (CBC) network element, a CBE, an AMF network element, a RAN node, and a UE. The CBC is a network function within the 5G core network. The CBC can connect to multiple base station controllers (BSCs), radio network subsystems (RNSs), mobility management entities (MMEs), and PWS-IWFs, and can connect to multiple CBEs. The CBC is responsible for managing CBS messages, including one or more of the following: assigning sequence numbers; modifying or deleting CBS messages held by BSC / RNC / eNodeB / NG-RAN nodes; initiating broadcasts by sending fixed-length CBS messages for each language provided by the cell to BSC / RNC / eNodeB / NG-RAN nodes, and padding the page to a length of 82 octets if necessary; determining the set of cells to which CBS messages should be broadcast and indicating the geographical range of each CBS message within the sequence number; determining when CBS messages should begin broadcasting; determining when CBS messages should stop broadcasting and subsequently instructing each BSC / RNC / eNodeB / NG-RAN node to stop broadcasting CBS messages; determining the period at which CBS message broadcasts should be repeated; determining the cell broadcast channel in the Global System for Mobile Communications (GSM) on which CBS messages are broadcast; and assigning an "emergency indication" to distinguish CBS messages from ordinary CBS messages when CBS sends an emergency message, including "cell identifier / service area identifier list," "warning type," and "warning message." If the "Warning Type" is "Test", then only UEs designed specifically for testing purposes will be able to display warning messages.

[0133] In one possible implementation, for CBS message processing, the BSC / RNC acts as a concentrator, controlling multiple cells in the broadcast area. Therefore, when a request related to cell broadcast (CB) is sent to the BSC / RNC, the CBC should process the cell list. The BSC / RNC should connect to only one CBC interface, and a BSC can connect to multiple base transceiver stations (BTSs). An RNC can connect to several Node Bs. The MME can connect to one or more CBCs, allowing the MME to have stream control transmission protocol (SCTP) transmission associations established with one or more CBCs; an MME can establish interfaces with multiple eNodeBs.

[0134] Furthermore, it is understood that the PWS architecture in the above example includes a service-based interface, namely the Namf interface. The PWS architecture in the above example includes one or more of the following reference points: reference point N2 between the RAN and AMF, reference point N50 between the AMF and CBCF, reference point N50 between the AMF and PWS-IWF, and reference point SBc between the PWS-IWF and CBC.

[0135] In a shared NG-RAN, a single public CBCF provides PWS, and this public CBCF connects to the shared NG-RAN via one or more AMFs; or a single public CBCF provides PWS, and this public CBCF connects to the shared NG-RAN via one or more AMFs and one or more PWS-IWFs. The deployment and configuration of the public CBCF or public CBC depend on the agreement between the shared operators. The shared operators need to coordinate the PWS between each other.

[0136] In NTN's PWS transmission mode, if the terminal is in poor transmission conditions, such as light indoor conditions or lacks positioning capabilities, it may be unable to determine its location based on satellite positioning signals. Consequently, the terminal cannot determine whether it is within a warning area. Currently, even when the terminal cannot determine its location based on positioning, it still displays the warning information sent by the network device to the user. This may cause users outside the warning area to receive the warning information, resulting in unnecessary panic and alarm. Furthermore, users outside the warning area, upon seeing the warning information, may connect to the internet to check the situation, call relatives, friends, or relevant departments, which could easily increase network load and cause network congestion.

[0137] Based on this, this application provides a communication method that determines whether the terminal should receive or indicate a message (such as a warning message) corresponding to the beam list by judging whether the beam in which the terminal is located is included in a specified beam list. This method can achieve accurate message transmission without location, improve user experience, and reduce the probability of network congestion.

[0138] Please see Figure 3 Taking the interaction between network devices and terminal devices as an example, the communication method provided in this application mainly includes the following steps.

[0139] S301, the network device sends at least one beam list and at least one message associated with the beam list.

[0140] In this embodiment, each beam list indicates at least one beam, and the beam list includes an index for at least one beam. The beam index can be represented by at least one of the following: Synchronization Signal Block (SSB) index number, Bandwidth Part (BWP) index number, or Transmission Configuration Indicator (TCI) index number. It is understood that different beams can be distinguished based on BWP, TCI, or SSB; that is, different beams correspond to different BWP, TCI, or SSB. Based on this, the terminal device and network device can represent the beam index using the BWP index number, TCI index number, or SSB index number. Furthermore, the beams described in the embodiments of this application can also be replaced with BWP, TCI, or SSB, and the index number can also be replaced by an identifier.

[0141] Optionally, multiple beam lists can be associated with the same message, or different beam lists can be associated with different messages. In this embodiment, the message associated with a beam list refers to a message including warning information, which can also be described as a warning message; or, the message associated with a beam list refers to a message including system information, which can also be described as a system message or a system information block, wherein the system information block (SIB) can be SIB1, SIB6, SIB7, SIB8, SIB19 or other system information blocks. Furthermore, it is understood that "warning" in this embodiment can also be described as an early warning, that is, warning information can also be described as early warning information, warning message can also be described as early warning message, and warning area can also be described as early warning area; this embodiment does not limit this.

[0142] Optionally, network devices can send at least one beam list and at least one message associated with that beam list via broadcast or multicast. For example, a network device can indicate at least one beam list and at least one message associated with that beam list in a specific broadcast message. Some examples of specific broadcast messages include: Material Information Block (MIB), SIB1, SIB6, SIB7, SIB19, Other System Information (OSI) messages, and Physical Broadcast Channel (PBCH) messages. This design eliminates the need to schedule different resources for different terminal devices based on the beam list, saving signaling overhead for resource scheduling and reducing the complexity of system scheduling.

[0143] Optionally, during the RRC connection establishment phase and subsequent communication, network devices can send at least one beam list and at least one beam list associated message to terminal devices via RRC signaling / DCI / group DCI / MAC CE, or send at least one beam list and at least one beam list associated message along with data transmission, or configure an independent PDSCH to carry at least one beam list and at least one beam list associated message, sending the PDSCH to terminal devices via unicast or multicast. Examples of RRC signaling include: RRC setup message, RRC reconfiguration message, and RRC resume message. This design, sending beam lists and associated messages to terminal devices individually or in groups, allows for flexible control of parameter values ​​for each terminal device or group of terminal devices, thereby optimizing system parameters and accurately sending messages to terminal devices within a specified area. For example, based on the different regions (or locations) where the terminal devices are located, different beam lists can be configured for terminal devices in different regions (or locations). Different beam lists are associated with different warning messages. This allows for the configuration of appropriate beam lists for terminal devices in different regions, enabling more accurate sending of corresponding warning messages to terminal devices through the beam lists and improving the accuracy of sending warning messages to terminal devices.

[0144] In one possible implementation, the network device sends a first beam list and a first message, the first message being associated with the first beam list. The first message may include warning information or system information. For example, the network device sends the first beam list and the first message to terminal devices within a first cell. The coverage area of ​​the beams corresponding to the first beam list is included within the coverage area of ​​the first cell, or it can be understood that the beams indicated by the first beam list are beams within the coverage area of ​​the first cell.

[0145] like Figure 4 For example, taking a first message including a warning message, where the warning area corresponds to beams 3 and 4 within the coverage area of ​​cell 1, and beams 6, 7, and 8 within the coverage area of ​​cell 2: When the network device is satellite 1, satellite 1 can send beam list 1 {beam 3, beam 4} to terminal devices within cell 1; assuming the beam index uses the SSB index number, beam list 1 can also be represented as {SSB3, SSB4}; assuming the beam index uses the BWP index number, beam list 1 can also be represented as {BWP3, BWP4}. When the network device is satellite 2, satellite 2 can send beam list 2 {beam 6, beam 7, beam 8} to terminal devices within cell 2; assuming the beam index uses the SSB index number, beam list 2 can also be represented as {SSB6, SSB7, SSB8}; assuming the beam index uses the BWP index number, beam list 2 can also be represented as {BWP6, BWP7, BWP8}.

[0146] Optionally, beam list 1 and beam list 2 may be associated with the same warning information or system information; beam list 1 and beam list 2 may be associated with different warning information, or beam list 1 and beam list 2 may be associated with different system information.

[0147] In another possible implementation, the network device sends multiple beam lists and warning or system information associated with each beam list. Optionally, the multiple beam lists correspond to different cells, and different cells belong to one network device or different network devices. For example, the network device sends multiple beam lists and warning or system information associated with each beam list to terminal devices in a first cell.

[0148] For example Figure 4 As illustrated, beam list 1 corresponds to cell 1, meaning beams 3 and 4 in beam list 1 are beams within the coverage area of ​​cell 1; beam list 2 corresponds to cell 2, meaning beams 6, 7, and 8 are beams within the coverage area of ​​cell 2. Optionally, different beam lists can be associated with the same message (such as warning messages or system information), or different beam lists can be associated with the same message (such as warning messages or system information).

[0149] Optionally, the network device can be satellite 1 or satellite 2. Satellite 1 can send beam list 1 and associated messages, as well as beam list 2 and associated messages, to terminal devices in cell 1. Satellite 2 can send beam list 1 and associated messages, as well as beam list 2 and associated messages, to terminal devices in cell 2. Optionally, the network device can also send the identifier of the cell corresponding to each beam list in multiple beam lists to indicate the correspondence between beam lists and cells.

[0150] The following example, using the first beam list and its associated first message, illustrates the transmission method of network devices.

[0151] Example 1: The first message includes a warning message. The network device can send the first beam list via PDCCH, PDSCH, or the first system information block. That is, the first beam list can be carried on PDCCH, DCI, PDSCH, or the first system information block. It is understood that the first system information block here indicates a SIB, which can be SIB1 or other SIBs such as SIB6, SIB7, or SIB8. Optionally, in this example, the beam list can be replaced with a warning beam list or a warning beam index number list.

[0152] Optionally, when multiple beam lists are associated with the same warning information, the network device can broadcast the same warning information to the cells it manages; this can be understood as carrying the warning information in the cell-level broadcast message. Alternatively, when multiple beam lists are associated with different warning information, and each beam list corresponds to a different cell, the network device can send different warning information according to the cells corresponding to different beam lists. Taking the first cell corresponding to the first beam list as an example, the network device can send the first beam list to the first cell. The beam coverage area corresponding to the beam list can be understood as the warning area. This design enables flexible mapping between warning information and warning areas, and the terminal device can determine whether it is in the warning area by decoding different broadcast messages.

[0153] Optionally, the network device can send the first beam list via PDCCH, implemented as follows: The network device can use a bitmap in the PDCCH to indicate the beams corresponding to the first beam list. For example, if all beams under the network device are numbered 0 to 13, a 14-bitmap in the PDCCH (00011000000000) can indicate beam list 1 {beam 3, beam 4}, indicating that terminal devices within the coverage area of ​​the beams corresponding to beam list 1 need to receive warning information and that warning information should be indicated to the user. In this design, the terminal device can determine whether further warning information needs to be received after receiving the PDCCH, avoiding unnecessary warning information and thus saving energy. Alternatively, when the network device only indicates warning information transmission in the PDCCH, the reserved bits of the PDCCH can be reused to indicate the first beam list, thereby saving signaling overhead. For example, the reserved bits can be predefined bits used to indicate time-frequency resource information or frequency domain interleaving information when transmitting paging information. Similarly, network devices can also use bitmaps in the PDCCH, DCI, first system information block, SIB6, SIB7, or SIB8 to indicate the beams corresponding to the first beam list. This design allows for more accurate transmission of updated system information to terminal devices via the beam list, improving the accuracy of updating system information to terminal devices.

[0154] Optionally, the network device can send the first beam list through the first system information block, and may also carry warning information associated with the first beam list in the first system information block. For multiple beam lists, the network device can send multiple beam lists and associated warning information through multiple system information blocks respectively. The beam range corresponding to a beam list (or warning beam index number list) can be understood as a warning area, and different beam lists can correspond to different warning areas. The advantage of the network device sending the warning beam index number list to the terminal device through multiple system information blocks is that by carrying different warning beam index number lists in different system information blocks, the terminal device can determine whether it is in the corresponding warning area by decoding different system information blocks, and then determine whether to indicate warning information to the user. Optionally, different beam lists can be associated with different warning information, that is, different warning areas can be associated with different warning information, supporting flexible mapping between warning information and warning areas. For example, warning information sent through SIB6, SIB7, and SIB8 can be mapped to different warning beam index number lists or different warning areas respectively. For example, network devices carry beam list 1 and associated warning information (such as fire warning) in SIB6, and beam list 2 and associated warning information (such as tsunami warning) in SIB7.

[0155] Example 2: The first message includes system information and is carried within a system information block. Optionally, the first beam list and the first message may be carried within the same system information block, or the first beam list and the first message may be carried within different system information blocks.

[0156] Optionally, the network device may also send an update instruction for the first system information block, wherein the system information included in the first message is used to update the first system information block. In one possible implementation, the first message is carried within the aforementioned first system information block, and the first message can also be understood as the updated first system information block. Terminal devices within the beam range corresponding to the first beam list can receive the updated first system information block and update (or replace) the currently stored first system information block locally. The first system information block may be SIB6, SIB7, or SIB8.

[0157] In one possible implementation, the first beam list is carried in the third system information block, and the first message is carried in the fourth system information block. For example, the third system information block is SIB1, and the fourth system information block includes one or more of SIB6, SIB7, and SIB8, to instruct terminal devices within the coverage area of ​​the beam corresponding to the first beam list to receive the fourth system information block.

[0158] Optionally, the fourth system information block can be either an initial system information block or an updated system information block, and this application embodiment does not limit this. (Example of SIB1 carrying only one SIB update indication) Taking the first beam list carried in SIB1 and the fourth system information block as the updated SIB6 as an example, SIB1 can also carry an update indication for SIB6, for example, the update indication uses valueTag to indicate whether SIB6 has been updated. Based on this, after receiving SIB1, if it is determined that the terminal device is within the coverage area of ​​the beam corresponding to the first beam list, and it is determined according to valueTag that SIB6 has been updated, the terminal device can receive the updated SIB6 and update (or replace) the locally stored SIB6 according to the updated SIB6; or, if it is determined that the terminal device is not within the coverage area of ​​the beam corresponding to the first beam list, the terminal device will not receive the updated SIB6; or, if it is determined that the terminal device is within the coverage area of ​​the beam corresponding to the first beam list, but it is determined according to valueTag that SIB6 has not been updated, the terminal device will not receive the updated SIB6. (Example of update indications for multiple SIBs in SIB1) Taking the first beam list carried in SIB1 and the fourth system information block including updated SIB6 and updated SIB7 as an example, SIB1 can also carry update indications for SIB6 and SIB7. Based on this, after receiving SIB1, the terminal device can determine whether to receive updated SIB6 and updated SIB7 by judging whether the terminal device is within the coverage area of ​​the beam corresponding to the first beam list, whether the update indication of SIB6 indicates that SIB6 has been updated, and whether the update indication of SIB7 indicates that SIB7 has been updated. The specific implementation process can be understood by referring to the example above, and this application embodiment will not elaborate on this.

[0159] Optionally, the beam range corresponding to the first beam list can be understood as a warning area. The updated SIB6 / SIB7 / SIB8 (i.e., the fourth system information block) refers to the updated warning information carried in SIB6 / SIB7 / SIB8. This design can prevent terminal devices in non-warning areas from receiving the corresponding updated SIBs, thereby saving energy consumption for terminal devices in non-warning areas to receive updated SIBs.

[0160] In another possible implementation, the first beam list and the first message are carried in the same system information block, such as the fifth system information block. The fifth system information block can be one of SIB1, SIB6, SIB7, or SIB8. Optionally, the fifth system information block can be an initial system information block or an updated system information block; this application embodiment does not limit this. Taking the updated SIB6 as an example, after receiving the updated SIB6, terminal devices within the coverage area of ​​the beam corresponding to the first beam list can update (or replace) their locally stored SIB6. Based on this, it can also be understood that network devices can send multiple system information blocks, each carrying a different beam list, to transmit the system information blocks to a designated terminal device. For example, the updated SIB6 carries a first beam list so that only terminal devices within the coverage area of ​​the beams corresponding to the first beam list can receive the updated SIB6; similarly, the updated SIB7 carries a second beam list so that only terminal devices within the coverage area of ​​the beams corresponding to the second beam list can receive the updated SIB7.

[0161] Optionally, the beam list described in Example 2 can also be described as a beam index number list, a beam list of system information, or a beam index number list of system information. This application embodiment does not limit this.

[0162] In the above scheme, the network device instructs terminals within the beam range corresponding to the beam list to receive the warning or system information by sending a beam list along with associated warning or system information. In another possible implementation, the network device can also instruct terminals within the beam range corresponding to the non-warning beam list not to receive warning information, or instruct that warning information not be sent to users within the beam range corresponding to the non-warning beam list, by sending a beam list not associated with warning information, such as a non-system information beam list (or a non-system information beam index number list). Similarly, the network device can also instruct terminals within the beam range corresponding to the non-system information beam list not to receive system information by sending a beam list not associated with system information, such as a non-system information beam list (or a non-system information beam index number list).

[0163] In the above scheme, the network device uses a beam list to indicate terminals within the beam coverage area that need to receive warning information or system information. In another possible implementation, the network device can also use a cell list to indicate terminals within the cell coverage area that need to receive warning information or system information. For example, the network device can send at least one list of physical cell identifiers (PCIs), and the warning information or system information associated with each PCI list. Accordingly, if the terminal's cell (serving cell) is included in the cell corresponding to the PCI list, the terminal can receive the warning information and indicate the warning information to the user, or the terminal can receive the system information. If the terminal's cell (serving cell) is not included in the cell corresponding to the PCI list, the terminal does not receive the warning information and / or does not indicate the warning information to the user, or the terminal does not receive the system information. The terminal can determine its own cell's PCI based on a broadcast signal (such as an SSB). Taking the example of the network device using a cell list to indicate terminals within the cell coverage area that need to receive warning information, the cell list can also be described as a warning cell index number list or a warning PCI list. If the coverage areas of multiple adjacent cells correspond to a warning area, a PCI list is constructed based on these cells. The PCI list includes the IDs of the multiple cells. Optionally, the cell ID can be replaced with a cell index number, a cell PCI, or a cell identifier, etc.

[0164] In another possible implementation, the network device can also use a cell list and a beam list within the cell to indicate that terminals within the coverage area of ​​the corresponding beam in the cell need to receive warning information or system information. Taking warning information as an example, this method can also be understood as: the network device can use a warning PCI list and a warning beam index number list within the cell to indicate the warning area. See, for example... Figure 4 Satellite 1 can broadcast warning information (such as fire or earthquake warnings), the ID of cell 1 (e.g., ID 1), and a beam list to terminal devices within cell 1.

[0165] 1. {SSB3, SSB4}. Satellite 2 broadcasts warning information, the ID of cell 2 (e.g., ID2), and a beam list to terminal devices within cell 2.

[0166] 2{SSB6, SSB7, SSB8}. See also... Figure 4Satellite 1 can broadcast warning information (such as fire warnings, earthquake warnings, etc.), the ID of cell 1 (e.g., ID 1), beam list 1 {SSB3, SSB4}, the ID of cell 2 (e.g., ID 2), and beam list 2 {SSB6, SSB7, SSB8} to terminal devices within cell 1; Satellite 2 can broadcast warning information (such as fire warnings, earthquake warnings, etc.), the ID of cell 1 (e.g., ID 1), beam list 1 {SSB3, SSB4}, the ID of cell 2 (e.g., ID 2), and beam list 2 {SSB6, SSB7, SSB8} to terminal devices within cell 2.

[0167] In the above scheme, the terminal device can determine its beam range based on the downlink broadcast signal. For example, it can determine the beam index number by detecting the downlink SSB signal, meaning the beam index number corresponds to the SSB index number. Alternatively, the terminal can determine the SSB index number of its signal coverage area based on the detected SSB signal. Another example is that the terminal can determine the BWP or TCI index number corresponding to its signal coverage area based on the detected downlink reference signal corresponding to the BWP or TCI. Yet another example is that the terminal can determine the BWP or TCI index number corresponding to its signal coverage area based on the BWP or TCI index number configured for it by the base station.

[0168] S302, The terminal device receives at least one beam list.

[0169] In this context, each beam list in at least one beam list is used to indicate at least one beam. For example, corresponding to the description in S301, the serving cell of the terminal device can be the first cell, that is, the terminal device described in S302 is a terminal device within the first cell, or the signal coverage area of ​​the terminal device in the first cell.

[0170] In one possible implementation, the network device sends a first beam list to a terminal device within a first cell, and the terminal device receives the first beam list. In another possible implementation, the network device sends multiple beam lists to the terminal devices within the first cell, and the terminal devices receive the multiple beam lists. Optionally, the multiple beam lists correspond to multiple cells, and the multiple cells include the first cell. The first cell is a cell that provides services to the terminal device, or the terminal device can receive the signal from the first cell, or the signal from the first cell covers the terminal device. When the network device indicates the identifier of the cell corresponding to each beam list in the multiple beam lists, the terminal device can determine the correspondence between the multiple beam lists and the multiple cells based on the cell identifier.

[0171] Furthermore, the terminal device may perform the following steps S303, S304a and S304b, or perform steps S305-S306.

[0172] S303, the terminal device receives at least one message associated with a beam list.

[0173] In one possible design, the terminal device can receive messages associated with at least one beam list from the network device via the serving cell. For example, corresponding to the terminal device receiving a first beam list in S302, it receives a first message associated with the first beam list. Alternatively, corresponding to the terminal device receiving multiple beam lists in S302, it receives messages associated with each beam list (such as warning messages or system information). It is understood that multiple beam lists can be associated with the same message, or multiple beam lists can be associated with different warning messages, or multiple beam lists can be associated with different system information.

[0174] Taking the terminal device receiving a first message associated with the first beam list as an example, if the first message includes a warning message, after receiving the first message, the terminal device can determine whether the beam it is in belongs to at least one beam indicated by the first beam list. The beam where the terminal device is located can be referred to as the first beam. This means that the terminal device is within the coverage area of ​​the first beam and can receive information sent by network devices using the first beam. Optionally, the terminal device can determine that its beam is the first beam by detecting SSB signals or other broadcast signals. Based on the determination result, the terminal device can further execute S304a or S304b.

[0175] S304a, if it is determined that the first beam is included in at least one beam indicated by the first beam list, the terminal device displays or indicates a first message to the user. The first message includes a warning message.

[0176] Similarly, in scenarios where the first message includes system information, if the terminal device determines that the first beam is included in at least one beam indicated by the first beam list, and if the terminal device currently stores the first system information block locally, the terminal device can update the first system information block based on the system information in the first message. For example, if the first message is an updated first system information block, the terminal device can replace the previously stored first system information block with the updated first system information block to complete the update. If the first message is an initial system information block, the terminal device can directly save or apply the information carried by the initial system information block.

[0177] S304b, if the terminal device determines that the first beam is not included in at least one beam indicated by the first beam list, it does not display or indicate the first message to the user.

[0178] S305, the terminal device receives a first message when it determines that the first beam is included in at least one beam indicated by the first beam list.

[0179] The terminal device is located within the coverage area of ​​the first beam, or alternatively, the first beam is the beam in which the terminal device is located. The terminal device can receive information sent by the network device using the first beam.

[0180] Optionally, if the first message includes a warning message, the terminal device may also execute step S306. If the first message includes system information, the terminal device may save or apply the system information in the first message, or update the first system information block according to the system information in the first message.

[0181] S306, The terminal device displays or indicates the first message to the user.

[0182] The above solution indicates warning areas or areas of SIB to be updated through a beam list. Terminal devices within the beam range of the beam list can indicate warning information to users, achieving accurate message delivery without obtaining terminal location, which can improve user experience and reduce the probability of network congestion.

[0183] In one possible design, Figure 3 Based on the illustrated method, in addition to sending a beam list and associated messages, the network device can also send a location range indicating the warning area. If the terminal device can locate its own position and determine that it is within the warning area, it can indicate the warning information received from the network device to the user. If the terminal device cannot determine its own position or the network device does not indicate the location range of the warning area to the UE, and the network device has already sent a beam list to the terminal device or the terminal device has received a beam list sent by the network device, the terminal device can, based on its own beam and the beam list sent by the network device, proceed according to the above method. Figure 3The described scheme determines whether to receive warning information from network devices and whether to indicate the warning information to the user. The warning area can be a circular area indicated by a center reference point and its radius, or a polygonal area indicated by a polygonal reference point. Optionally, by protocol agreement, when the terminal device can determine its location, it will preferentially determine whether to receive or indicate the warning message to the user based on its own location information and the location range of the warning area. Furthermore, if the terminal device determines that its location is not within the warning area, it may not receive the warning message, thereby reducing reception power consumption. The protocol mentioned in this document can also be referred to as a standard, technical standard, specification, or technical specification.

[0184] Optionally, the network device may also indicate priority information to the terminal device, for example, by broadcasting a message. This priority information indicates that the first method has a higher priority than the second method. The first method represents the terminal device's method of determining whether to indicate a warning message to the user based on location, and the second method represents the terminal device's method of determining whether to indicate a warning message to the user based on beamwidth; or, the first method represents the terminal device's method of determining whether to indicate a warning message to the user based on beamwidth, and the second method represents the terminal device's method of determining whether to indicate a warning message to the user based on location. Furthermore, in one possible implementation, if the network device does not send a beamwidth list or the location range of the warning area to the terminal device, the terminal device may indicate a warning message to the user by default.

[0185] Optionally, the list of warning beams sent by the network devices mentioned above can be determined based on the warning areas indicated by the core network devices. See also Figure 5 This application also provides a communication method, which describes the interaction process between core network devices and network devices. The method mainly includes the following steps.

[0186] S501, the core network device sends the first area and the warning information associated with the first area to the network device.

[0187] The first area can be understood as the designated warning area.

[0188] In one possible design, a first area corresponds to at least one beam list, and different beam lists correspond to different cells. The core network device can indicate the first area to the network device by sending at least one beam list within the first area. Accordingly, the number of warning messages for the first area is one, and at least one beam list within the first area is associated with the same warning message; or, the number of warning messages associated with the first area is multiple, and different beam lists within at least one beam list in the first area are associated with different warning messages.

[0189] For example, such as Figure 6A The diagram illustrates that core network element 1 obtains the warning information and the corresponding warning area from a warning message provider. This warning message provider can be provided by an authoritative department or public safety agency. Core network element 1 determines the corresponding list of warning cell / beam coverage areas based on the warning area; that is, the warning area is represented by this list. The list uses cell IDs and beam IDs to indicate the cells and beams within the coverage area of ​​the warning area. Core network element 1 sends the warning information and the list of warning cell / beam coverage areas to core network element 2. Core network element 2 determines the corresponding network device based on the list and sends the warning information and the list to the corresponding network device, where the cell / beam corresponding to the signal transmitted by that network device is in the list of warning cell / beam coverage areas.

[0190] by Figure 4 Taking the illustrated warning area as an example, the coverage area of ​​the warning area corresponds to beams 3 and 4 in cell 1, and beams 6, 7, and 8 in cell 2. Core network element 1 can determine beam list 1 {beams 3 and 4} corresponding to cell 1, and beam list 2 {beams 6, 7, and 8} corresponding to cell 2. Core network element 1 indicates the warning information, beam list 1, and beam list 2 corresponding to the warning area to core network element 2. Optionally, core network element 2 sends the warning information and the beam list corresponding to the cells managed by the network device to the network device, with the network device as the reference. Figure 4 Taking satellite 1 as an example, core network element 2 sends warning information and beam list 1 to satellite 1; or optionally, core network element 2 sends warning information and a complete beam list corresponding to the warning area to the network device, with the network device as the reference. Figure 4 Taking satellite 1 as an example, core network element 2 sends warning information, beam list 1, and beam list 2 to satellite 1; then satellite 1 determines the corresponding beam list based on the cell signal it transmits. For example, if satellite 1 transmits the signal of cell 1, then the beam list corresponding to cell 1 can be determined to be beam list 1.

[0191] It is understandable that core network element 1 and core network element 2 can be the same network element or form a single network element, or they can be two network elements deployed together. For example, in the PWS architecture, core network element 1 can be a CBC or CBCF; core network element 2 can be an AMF or MME.

[0192] In another possible design, the first region can correspond to a geographic area, identified by a mapped cell ID. In a warning scenario, this geographic area can be the location range of the warning area. For example, the Earth's surface can be divided into grids, with each grid assigned a different mapped cell ID; the warning area corresponds to one of these grids. It's understood that the mapped cell ID is a logical identifier used to identify a geographic area, and it includes the geographic area identifier. Optionally, the mapped cell ID can also include a timestamp, indicating the validity period (or effective time) of the mapped cell ID.

[0193] For example, such as Figure 6B As illustrated, core network element 1 obtains warning information and the corresponding warning area from a warning message provider. The warning area indicates the region where the warning information is broadcast. The warning message provider can be provided by an authoritative department or public safety agency, and there can be one or more warning messages and corresponding warning areas. Core network element 1 sends a mapped cell ID or a set of mapped cell IDs including multiple mapped cell IDs to core network element 2.

[0194] Taking a mapped cell ID as an example, core network element 2 can determine the corresponding network device based on the mapped cell ID and send the warning information along with the mapped cell ID to that network device. Where the cell indicated by the mapped cell ID overlaps with the cells managed by the network device, the network device can transmit cell signals within the coverage area of ​​the overlapping cells.

[0195] After receiving a warning message and a mapped cell ID, the network device determines at least one beam list or cell list based on the beams within the coverage area corresponding to the mapped cell ID. Figure 4Taking the illustrated warning area as an example, if the mapped cell ID indicates the warning area, then the beams within the coverage area corresponding to the mapped cell ID include beams 3 and 4 in cell 1, and beams 6, 7 and 8 in cell 2.

[0196] In one possible design, the network device can create a beam list by combining the coverage area corresponding to the mapped cell ID with the beams that overlap within the network device's coverage area. The first region is... Figure 4 Taking the warning area described in the text as an example, if the network device is satellite 1, the beam list obtained by satellite 1 is beam list 1 {beam 3, beam 4}; or, if the network device is satellite 2, the beam list obtained by satellite 2 is beam list 2 {beam 6, beam 7, beam 8}. In another possible design, the network device can also divide the beams within the coverage area corresponding to the mapped cell ID into beam lists corresponding to different cells. Taking the first area as... Figure 4 Taking the warning area described in the text as an example, the network device (satellite 1 or satellite 2) can determine that cell 1 corresponds to beam list 1 {beam 3, beam 4} and cell 2 corresponds to beam list 2 {beam 6, beam 7, beam 8}.

[0197] It is understandable that core network element 1 and core network element 2 can be the same network element, or core network element 1 and core network element 2 can be two network elements deployed together. For example, in the PWS architecture, core network element 1 can be CBC or CBCF; core network element 2 can be AMF or MME.

[0198] S502, the network device sends at least one beam list and warning message to the terminal device.

[0199] Corresponding to S3501, such as Figure 6A or Figure 6B This illustrates that after receiving a warning message and the corresponding beam list, the network device can send at least the warning message and the beam list corresponding to that cell to the terminal devices within the cell. The first area is... Figure 4Taking the warning area described in the text as an example, if the network device is satellite 1 and only beam list 1 is obtained, satellite 1 sends a warning message and beam list 1 corresponding to cell 1 to the terminal device in cell 1; or, if the network device is satellite 2 and only beam list 2 is obtained, satellite 2 sends a warning message and beam list 2 corresponding to cell 2 to the terminal device in cell 2; or, if the network device is satellite 1 and both beam list 1 and beam list 2 are obtained, satellite 1 sends a warning message, beam list 1 corresponding to cell 1, and beam list 2 corresponding to cell 2 to the terminal device in cell 1; or, if the network device is satellite 2 and both beam list 1 and beam list 2 are obtained, satellite 2 sends a warning message, beam list 1 corresponding to cell 1, and beam list 2 corresponding to cell 2 to the terminal device in cell 2.

[0200] Accordingly, the terminal device determines whether its own beam belongs to the beam list indicated by the network device based on its own beam and the beam list, and then determines whether to indicate a warning message to the user. For specific implementation details, please refer to [link to implementation details]. Figure 3 The solutions described herein are understood, and the embodiments of this application will not be elaborated upon in detail.

[0201] Based on the same concept, see [link / reference] Figure 7 This application provides a communication device 700, which includes a processing module 701 and a communication module 702. The communication device 700 can be a network device, or a communication device applied to or used in conjunction with a network device to implement a communication method executed on the network device side; alternatively, the communication device 700 can be a terminal device, or a communication device applied to or used in conjunction with a terminal device to implement a communication method executed on the terminal device side.

[0202] The communication module can also be called a transceiver module, transceiver, transceiver unit, or transceiver device. The processing module can also be called a processor, processing board, processing unit, or processing device. Optionally, the communication module is used to perform the sending and receiving operations on the network device side or terminal device side in the above method. The device in the communication module that implements the receiving function can be regarded as a receiving unit, and the device in the communication module that implements the sending function can be regarded as a sending unit. That is, the communication module includes a receiving unit and a sending unit.

[0203] When the communication device 700 is applied to a network device, the processing module 701 can be used to implement... Figure 3 The processing functions of the network device in the illustrated embodiment, the communication module 702 can be used to implement Figure 3 The network device described in the illustrated embodiment has transmit and receive functions. Alternatively, the communication device can be understood with reference to the third aspect of the invention and the possible designs within that third aspect.

[0204] When the communication device 700 is applied to a terminal device, the processing module 701 can be used to implement... Figure 3 The processing functions of the terminal device in the illustrated embodiment, the communication module 702 can be used to implement Figure 3 The terminal device in the illustrated embodiment has transmit and receive functions. Alternatively, the communication device can be understood with reference to the fourth aspect of the invention and the possible designs within that aspect.

[0205] Furthermore, it should be noted that the aforementioned communication module and / or processing module can be implemented through virtual modules. For example, the processing module can be implemented through software functional units or virtual devices, and the communication module can be implemented through software functions or virtual devices. Alternatively, the processing module or communication module can also be implemented through physical devices. For example, if the communication device is implemented using a chip / chip circuit, the communication module can be an input / output circuit and / or a communication interface, performing input operations (corresponding to the aforementioned receiving operation) and output operations (corresponding to the aforementioned sending operation); the processing module is an integrated processor, microprocessor, or integrated circuit.

[0206] The module division in this embodiment is illustrative and represents only one logical functional division. In actual implementation, other division methods may be used. Furthermore, the functional modules in each embodiment of this application can be integrated into a single processor, exist as separate physical entities, or be integrated into a single module. The integrated modules described above can be implemented in hardware or as software functional modules.

[0207] Based on the same technical concept, embodiments of this application also provide a communication device 800. For example, the communication device 800 may be a chip or a chip system. Optionally, in embodiments of this application, the chip system may be composed of chips, or may include chips and other discrete devices.

[0208] The communication device 800 can be used to implement the function of any network element in the communication system described in the foregoing embodiments. The communication device 800 may include at least one processor 810 coupled to a memory. Optionally, the memory may be located within the communication device, integrated with the processor, or located outside the communication device. For example, the communication device 800 may also include at least one memory 820. The memory 820 stores computer programs, computer programs or instructions, and / or data necessary for implementing any of the above embodiments; the processor 810 may execute the computer program stored in the memory 820 to complete the methods in any of the above embodiments.

[0209] The communication device 800 may also include a communication interface 830, through which the communication device 800 can interact with other devices. For example, the communication interface 830 may be a transceiver, circuit, bus, module, pin, or other type of communication interface. When the communication device 800 is a chip-based device or circuit, the communication interface 830 may also be an input / output circuit, capable of inputting information (or receiving information) and outputting information (or sending information). The processor may be an integrated processor, microprocessor, integrated circuit, or logic circuit, and the processor can determine the output information based on the input information.

[0210] The coupling in this embodiment is an indirect coupling or communication connection between devices, units, or modules, which can be electrical, mechanical, or other forms, used for information exchange between devices, units, or modules. The processor 810 may operate in conjunction with the memory 820 and the communication interface 830. This embodiment does not limit the specific connection medium between the processor 810, the memory 820, and the communication interface 830.

[0211] Optional, see Figure 8 The processor 810, the memory 820, and the communication interface 830 are interconnected via a bus 840. The bus 840 can be a peripheral component interconnect (PCI) bus or an extended industry standard architecture (EISA) bus, etc. The bus can be divided into an address bus, a data bus, a control bus, etc. For ease of representation, Figure 8 The bus is represented by a single thick line, but this does not mean that there is only one bus or one type of bus.

[0212] In the embodiments of this application, the processor may be a general-purpose processor, a digital signal processor, an application-specific integrated circuit (ASIC), a field-programmable gate array (FPGA), or other programmable logic devices, discrete gate or transistor logic devices, or discrete hardware components, capable of implementing or executing the methods, steps, and logic block diagrams disclosed in the embodiments of this application. The general-purpose processor may be a microprocessor or any conventional processor. The steps of the methods disclosed in the embodiments of this application can be directly manifested as being executed by a hardware processor, or executed by a combination of hardware and software modules within the processor.

[0213] In the embodiments of this application, the memory can be non-volatile memory, such as a hard disk drive (HDD) or a solid-state drive (SSD), or it can be volatile memory, such as random-access memory (RAM). Memory is any other medium capable of carrying or storing desired program code in the form of instructions or data structures, and accessible by a computer, but is not limited thereto. The memory in the embodiments of this application can also be a circuit or any other device capable of implementing storage functions, used to store program instructions and / or data.

[0214] In one possible implementation, the communication device 800 can be applied to a network device. Specifically, the communication device 800 can be a network device or a device capable of supporting a network device and implementing the functions of the network device in any of the above embodiments. The memory 820 stores computer programs (or instructions) and / or data that implement the functions of the network device in any of the above embodiments. The processor 810 can execute the computer program stored in the memory 820 to complete the method executed by the network device in any of the above embodiments. Applied to a network device, the communication interface in the communication device 800 can be used to interact with a terminal device, sending information to the terminal device or receiving information from the terminal device.

[0215] In another possible implementation, the communication device 800 can be applied to a terminal device. Specifically, the communication device 800 can be a terminal device or a device capable of supporting the terminal device and implementing the functions of the terminal device in any of the above embodiments. The memory 820 stores computer programs (or instructions) and / or data that implement the functions of the terminal device in any of the above embodiments. The processor 810 can execute the computer program stored in the memory 820 to complete the method executed by the terminal device in any of the above embodiments. Applied to a terminal device, the communication interface in the communication device 800 can be used to interact with network devices, sending information to or receiving information from network devices.

[0216] Since the communication device 800 provided in this embodiment can be applied to a network device to complete the method executed by the network device, or applied to a terminal device to complete the method executed by the terminal device, the technical effects it can achieve can be referred to the above method examples, and will not be repeated here.

[0217] Based on the above embodiments, this application provides a communication system, including a network device and a terminal device, wherein the network device and the terminal device can implement... Figure 3 The method provided in the illustrated embodiments.

[0218] The technical solutions provided in this application can be implemented, in whole or in part, through software, hardware, firmware, or any combination thereof. When implemented using software, they can be implemented, in whole or in part, in the form of a computer program product. The computer program product includes one or more computer instructions. When the computer program instructions are loaded and executed on a computer, all or part of the processes or functions described in the embodiments of this application are generated. The computer can be a general-purpose computer, a special-purpose computer, a computer network, a terminal device, a network device, or other programmable device. The computer instructions can be stored in a computer-readable storage medium or transmitted from one computer-readable storage medium to another. For example, the computer instructions can be transmitted from one website, computer, server, or data center to another website, computer, server, or data center via wired (e.g., coaxial cable, optical fiber, digital subscriber line (DSL)) or wireless (e.g., infrared, wireless, microwave, etc.) means. The computer-readable storage medium can be any available medium that a computer can access or a data storage device such as a server or data center that integrates one or more available media. The available media may be magnetic media (e.g., floppy disks, hard disks, magnetic tapes), optical media (e.g., digital video discs (DVDs)), or semiconductor media, etc.

[0219] In the embodiments of this application, provided there is no logical contradiction, the embodiments may reference each other. For example, the methods and / or terms between method embodiments may reference each other, the functions and / or terms between device embodiments may reference each other, and the functions and / or terms between device embodiments and method embodiments may reference each other.

[0220] Obviously, those skilled in the art can make various modifications and variations to the embodiments of this application without departing from the scope of the embodiments of this application. Therefore, if these modifications and variations to the embodiments of this application fall within the scope of the claims of the embodiments of this application and their equivalents, the embodiments of this application are also intended to include these modifications and variations.

Claims

1. A communication method, characterized in that, Applied to a terminal device, the method includes: Receive a first beam list, the first beam list being used to indicate at least one beam; In cases where the first beam is included in the at least one beam, a first message is received and / or the first message is indicated to the user; wherein the terminal device is located within the coverage area of ​​the first beam, and the first message is associated with the first beam list.

2. The method as described in claim 1, characterized in that, The first message may include warning messages or system information.

3. The method as described in claim 2, characterized in that, The first message includes system information, and the method further includes: Receive update instructions for the first system information block; The first system information block is updated based on the system information included in the first message.

4. The method according to any one of claims 1-3, characterized in that, The coverage area of ​​the beam corresponding to the first beam list is included in the coverage area of ​​the serving cell of the terminal device.

5. The method as described in claim 4, characterized in that, The receiving first beam list includes: The device receives multiple beam lists, each corresponding to a multiple cell, and the first beam list is included in the multiple beam lists. The serving cell of the terminal device is included in the multiple cells.

6. The method as described in claim 5, characterized in that, Also includes: Receive the identifier of the cell corresponding to each of the multiple beam lists.

7. The method as described in claim 5 or 6, characterized in that, The multiple beam lists are associated with different warning messages, or the multiple beam lists are associated with different system information.

8. The method according to any one of claims 1-7, characterized in that, The first beam list includes an index for each of the at least one beams, and the beam index includes at least one of the following: Synchronization Signal Block (SSB) index number, Partial Bandwidth (BWP) index number, or Transmission Configuration Indicator (TCI) index number.

9. The method according to any one of claims 1-8, characterized in that, Before receiving the first beam list, the following is also included: It was determined that the location information of the terminal device was not obtained.

10. The method according to any one of claims 1-9, characterized in that, The first message includes a warning message, and the first beam list is carried on the Physical Downlink Control Channel (PDCCH) or the second system information block.

11. The method according to any one of claims 1-9, characterized in that, The first message includes system information, the first beam list is carried in the third system information block, and the first message is carried in the fourth system information block.

12. The method according to any one of claims 1-9, characterized in that, The first message includes system information, and the first beam list and the first message are carried in the first system information block.

13. A communication method, characterized in that, Applied to network devices, the method includes: Send a first beam list to the terminal device, the first beam list being used to indicate at least one beam; Send a first message associated with the first beam list to the terminal device. The first message includes warning information or system information.

14. The method as described in claim 13, characterized in that, The first message includes system information, and the method further includes: Send an update instruction for the first system information block, wherein the system information included in the first message is used for updating the first system information block.

15. The method as described in claim 13 or 14, characterized in that, The coverage area of ​​the beam corresponding to the first beam list is included in the coverage area of ​​the serving cell of the terminal device.

16. The method as described in claim 15, characterized in that, Sending the first beam list to the terminal device includes: Multiple beam lists are sent to the terminal device, each beam list corresponding to multiple cells. The first beam list is included in the multiple beam lists, and the serving cell of the terminal device is included in the multiple cells.

17. The method as described in claim 16, characterized in that, Also includes: The identifier of the cell corresponding to each of the multiple beam lists is sent to the terminal device.

18. The method according to any one of claims 13-17, characterized in that, Before sending the first beam list to the terminal device, the method further includes: Receive multiple beam lists from core network devices, as well as warning or system information associated with each beam list, wherein the multiple beam lists include the first beam list.

19. The method according to any one of claims 16-18, characterized in that, The multiple beam lists are associated with different warning messages, or the multiple beam lists are associated with different system information.

20. The method according to any one of claims 13-19, characterized in that, The first beam list includes an index for each of the at least one beams, and the beam index includes at least one of the following: Synchronization Signal Block (SSB) index number, Partial Bandwidth (BWP) index number, or Transmission Configuration Indicator (TCI) index number.

21. The method according to any one of claims 13-20, characterized in that, The first message includes a warning message, and the first beam list is carried on the Physical Downlink Control Channel (PDCCH) or the second system information block.

22. The method according to any one of claims 13-20, characterized in that, The first message includes system information, the first beam list is carried in the third system information block, and the first message is carried in the fourth system information block.

23. The method according to any one of claims 13-20, characterized in that, The first message includes system information, and the first beam list and the first message are carried in the fifth system information block.

24. A communication method, characterized in that, Applied to network devices, including: Receive warning messages from the first area and associated with the first area from the core network equipment; A first beam list and the warning information are sent to the terminal device, wherein the beam coverage area corresponding to the first beam list is included in the first area.

25. The method as described in claim 24, characterized in that, The coverage area of ​​the beam corresponding to the first beam list is included in the coverage area of ​​the network device, or the coverage area of ​​the beam corresponding to the first beam list is included in the coverage area of ​​the first cell of the network device, where the first cell is the serving cell of the terminal device.

26. The method as described in claim 24 or 25, characterized in that, The first beam list includes an index for each of the at least one beams, and the beam index includes at least one of the following: Synchronization Signal Block (SSB) index number, Partial Bandwidth (BWP) index number, or Transmission Configuration Indicator (TCI) index number.

27. The method according to any one of claims 24-26, characterized in that, The first beam list is carried in the Physical Downlink Control Channel (PDCCH) or the System Information Block.

28. A communication system, characterized in that, It includes a communication device for performing the method as described in any one of claims 1-12, and a communication device for performing the method as described in any one of claims 13-27.

29. A communication device, characterized in that, include: At least one processor coupled to a memory, the processor being configured to invoke computer program instructions stored in the memory to perform the method as claimed in any one of claims 1-27.

30. A computer-readable storage medium, characterized in that, The computer-readable storage medium stores instructions that, when executed on a computer, cause the computer to perform the method as described in any one of claims 1-27.

31. A computer program product, characterized in that, Includes computer execution instructions, which, when executed on a computer, cause the computer to perform the method as described in any one of claims 1-27.

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