Base station and communication method

Abstract

This base station comprises: a reception unit that receives a warning message from a network node which performs distribution control of the warning message; and a control unit that applies a prescribed filter to the received warning message.

Description

Base Station and Communication Method

[0001] The present invention relates to a base station and a communication method in a communication system.

[0002] Conventional warning systems using mobile networks have mainly been used as public warning systems (PWS (Public Warning System)) and have had the function of simultaneously distributing disaster information and evacuation instructions to user terminals (UEs) in case of emergencies. However, since these systems send warnings without considering the attribute information of the distribution target users, it has been difficult to optimize the distribution for users with specific attributes. For example, evacuation instructions during disasters may have different levels of urgency depending on the age group and family composition.

[0003] 3GPP TS 23.041 V18.6.0 (2024-09)

[0004] However, the current system only distributes emergency information uniformly and lacks a mechanism to respond to individual needs and situations. Also, when distributing warnings limited to a specific area, distribution control based on the individual attribute information of users cannot be performed. Furthermore, in recent years, as responses to meteorological disasters and abnormal weather (e.g., heavy rain, high temperature) are required, the generation of warning messages corresponding to these new disaster types and the appropriate distribution of warnings according to user attributes are expected. However, the current technology has limited means to meet these needs.

[0005] The base station in the present embodiment includes a receiving unit that receives a warning message from a network node that performs distribution control of the warning message, and a control unit that applies a predetermined filter to the received warning message.

[0006] According to the present embodiment, the distribution of warning messages can be efficiently and effectively controlled by filtering in the radio access network.

[0007] This is a diagram illustrating an example of a communication system. This is a diagram showing an example of the architecture of the alarm system in this embodiment. This is a sequence diagram showing an example of the operation procedure of the alarm system in this embodiment. This is a diagram showing an example of the alarm type in this embodiment. This is a sequence diagram showing an example of the operation procedure of the alarm system in this embodiment, including filtering on the RAN side. This is a diagram showing an example of the functional configuration of the base station and network node in this embodiment. This is a diagram showing an example of the functional configuration of the terminal in this embodiment. This is a diagram showing an example of the hardware configuration of the base station, terminal and network node in this embodiment. This is a diagram showing an example of the vehicle configuration in this embodiment.

[0008] This embodiment will be described below with reference to the drawings. Note that the embodiments described below are examples, and the embodiments to which the present invention applies are not limited to those described below.

[0009] In the operation of the communication system of this embodiment, existing technologies will be used as appropriate. Existing technologies include, for example, existing communication methods based on the 3GPP standard, such as NR (New Radio) (5G) / 5GC (5G Core network). However, existing technologies are not limited to NR / 5GC, but also include LTE, LTE-Advanced and NR (5G) and later methods, or wireless LAN (Local Area Network).

[0010] In this embodiment, "configuring" wireless parameters means either pre-configuring predetermined values, or configuring wireless parameters notified by a network node or UE.

[0011] Figure 1 is a diagram illustrating an example of a communication system. As shown in Figure 1, the communication system consists of a UE and multiple network nodes. Hereafter, one network node will be assumed to correspond to each function, however, one network node may implement multiple functions, or multiple network nodes may implement one function. Furthermore, the "connection" described below may be a logical connection or a physical connection.

[0012] The RAN (Radio Access Network) is a network node with radio access functionality, which may include a base station 10, and is connected to the UE, AMF (Access and Mobility Management Function), and UPF (User plane function). The AMF is a network node that has functions such as terminating the RAN interface, terminating the NAS (Non-Access Stratum), registration management, connection management, reachability management, and terminal mobility management. The UPF is a network node that interconnects with the DN (Data Network) and has functions related to processing user plane data, such as PDU (Protocol Data Unit) session points to the outside, packet routing and forwarding, and user plane QoS (Quality of Service) handling. The UPF and DN constitute a network slice. In the wireless communication network of this embodiment, multiple network slices are constructed.

[0013] AMF is connected to UE, RAN, SMF (Session Management function), NSSF (Network Slice Selection Function), NEF (Network Exposure Function), NRF (Network Repository Function), UDM (Unified Data Management), AUSF (Authentication Server Function), PCF (Policy Control Function), and AF (Application Function). AMF, SMF, NSSF, NEF, NRF, UDM, AUSF, PCF, and AF are network nodes that are interconnected via interfaces based on their respective services: Namf, Nsmf, Nnssf, Nnef, Nnrf, Nudm, Nausf, Npcf, and Naf.

[0014] SMF is a network node with functions such as session management, IP (Internet Protocol) address allocation and management for UEs, DHCP (Dynamic Host Configuration Protocol) functionality, ARP (Address Resolution Protocol) proxy, and roaming functionality. NEF is a network node with the function of notifying other NFs (Network Functions) of capabilities and events. NSSF is a network node with functions such as selecting the network slice to which the UE connects, determining the allowed NSSAI (Network Slice Selection Assistance Information), determining the NSSAI to be set, and determining the AMF set to which the UE connects. PCF is a network node with the function of controlling network policies. AF is a network node with the function of controlling application servers. NRF is a network node with the function of discovering NF instances that provide services. UDM is a network node that manages subscriber data and authentication data. UDM is connected to UDR (User Data Repository) which holds this data.

[0015] The communication system in this embodiment is a warning system that uses a mobile network, for example, a PWS (Public Warning System). The PWS is a system that delivers warning information to users (UEs) via a mobile network (e.g., 5G, LTE) in the event of an emergency. Figure 2 shows an example of the architecture of the warning system in this embodiment. As shown in Figure 2, the PWS includes a UE 20, a RAN (NG-RAN) 10, an AMF 30A, a CBCF (Cell Broadcast Center Function) 30B, a CBE (Cell Broadcast Entity) 30C, and a UDM 30D. The RAN 10 may also be referred to as a RAN node, base station, NG-RAN node, gNB, or ng-eNB.

[0016] The AMF 30A forwards alarm messages received from the CBCF 30B via the N50 interface (for example, CBS (Cell Broadcast Service) messages in Write-Replace Warning Request format) to the corresponding RAN 10 via the N2 interface.

[0017] The CBCF 30B uses the AMF 30A's communication service to forward alarm messages to the RAN 10 and subscribes to receive notifications related to alarm distribution. The CBCF 30 has the following functions, for example:

[0018] - Assigning serial numbers: Assign a serial number to each CBS message.

[0019] - Modifying and deleting CBS messages: Modify or delete CBS messages held on the NG-RAN node.

[0020] - Initiate CBS message transmission: Send a fixed-length CBS message to the NG-RAN node for each language provided by each cell. For example, based on 3GPP TS 23.038, pad pages to 82 octets as needed.

[0021] - Broadcast cell determination: Determine the set of cells on which CBS messages should be broadcast, and indicate the geographical range of each CBS message within its serial number.

[0022] - Determining broadcast start and end times: Determine the broadcast start and end times for CBS messages and instruct the NG-RAN node to end the broadcast.

[0023] - Determining broadcast intervals: Determine the interval at which CBS messages will be repeated.

[0024] - Emergency Message Management: When sending an emergency message, assign an "emergency indicator" to distinguish it from a regular CBS message. This includes the cell ID / service area ID list, warning type, and warning message.

[0025] The CBE 30C generates and formats CBS messages. The CBE 30C then transmits the generated CBS messages to the CBCF 30B or the CBC (Cell Broadcast Center).

[0026] In Figure 2, one network node is assumed to correspond to each function shown, but one network node may implement multiple functions, or multiple network nodes may implement one function. In this embodiment, "connection" may be a logical connection or a physical connection.

[0027] In this embodiment, an alarm system is realized that can respond to new extreme weather and meteorological disasters (e.g., "high temperature," "high humidity").

[0028] Figure 3 is a sequence diagram showing an example of the operation procedure of the alarm system in this embodiment.

[0029] In step S101, network registration and security (e.g., mutual authentication) procedures are performed.

[0030] In step S102, the CBE 30C sends an Emergency Broadcast Request to the CBCF 30B. The Emergency Broadcast Request is an example of emergency information (warning information, warning message) and includes "Warning type", "Warning message", "Affected area", and "Duration". In this embodiment, as shown in Figure 4, new warning types indicating "heavy rain / torrential rain" and / or "high temperature / heatstroke" may be added. The names of the added warning types are not limited to the above and may be any name. The number of added warning types is not limited to one or two, but may be any number.

[0031] In step S103, CBCF 30B identifies AMF 30A that require emergency information delivery based on “Affected Area” information. CBCF 30B sends a Write-Replace Warning Request NG-RAN message containing the alarm message and delivery attributes to AMF 30A. The delivery attributes may include, for example, the alarm type, message identifier, serial number, NG-RAN TAI list, alarm area list, OMC ID, CWM indicator, alarm message acknowledgment request, Global RAN Node ID, and alarm area coordinates.

[0032] In step S104, AMF 30A sends a Write-Replace Warning Confirm NG-RAN message to CBCF 30B in response to the Write-Replace Warning Request NG-RAN message.

[0033] In step S105, CBCF 30B sends an Emergency Broadcast Response to CBE 30C in response to the Emergency Broadcast Request.

[0034] In step S106, AMF 30A forwards the Write-Replace Warning Message Request NG-RAN message to the NG-RAN node 10. AMF 30A uses a list of NG-RAN TAIs (Tracking Area Identifiers) to determine the NG-RAN node 10 within the distribution area. If the message does not contain a list of NG-RAN TAIs and AMF 30A has not received a Global RAN Node ID from CBCF 30B, the message is forwarded to all NG-RAN nodes 10 connected to AMF 30A according to the RAT Selector NG-RAN. On the other hand, if AMF 30A has received a Global RAN Node ID from CBCF 30B, AMF 30A forwards the message only to the NG-RAN node 10 indicated by its Global RAN Node ID information element (IE).

[0035] In step S107, the NG-RAN node 10 broadcasts an alarm message to the cell determined based on the Warning Area List NG-RAN information. The alarm message includes the alarm type and the warning area coordinates. The warning area coordinates are not required to be included in the alarm message.

[0036] For example, if a CBCF 30B sends alarm messages to multiple AMF 30A for the same alarm area, the NG-RAN node 10 may receive the same message from multiple AMF 30A. The NG-RAN node 10 detects duplicate messages by checking the message identifier and serial number fields in the alarm message. If duplicate messages are detected, the NG-RAN node 10 may broadcast only the message that was first received by the cell.

[0037] In step S108, the UE 20, upon receiving the alarm message, outputs (displays) the contents of the alarm message to the user. Depending on the alarm type included in the alarm message, the method of outputting to the user or whether or not outputting (displaying) is performed may be determined. In this embodiment, newly added alarm types (for example, "heavy rain / torrential rain" and / or "high temperature / heatstroke") and the contents corresponding to the alarm type may be displayed to the user.

[0038] In step S109, the NG-RAN node 10 sends a Write Replace Warning Message Response to the AMF 30A.

[0039] In step S110, AMF 30A sends NonUeN2InfoNotify (Write-Replace Warning Indication NG-RAN) to CBCF 30B.

[0040] In step S111, AMF 30A determines whether the delivery was successful or unsuccessful based on the Write-Replace Warning Response message from NG-RAN node 10, and creates a trace record.

[0041] Thus, the alarm system in this embodiment can provide the user with alarm messages corresponding to new alarm types.

[0042] For example, the urgency of evacuation during a disaster may differ depending on age group and family structure. The alarm system in this embodiment allows control over the distribution of alarm messages according to the alarm level (warning / emergency level). In this embodiment, filtering is applied to alarm messages on the RAN side.

[0043] Figure 5 is a sequence diagram showing an example of the operation procedure of the alarm system in this embodiment, including filtering on the RAN side.

[0044] In step S11, the PWS system 30 (CBCF 30B, CBE 30C) transmits the PWS filter settings to the gNB 10. The PWS filter settings are information regarding the filters applied to PWS notifications. The PWS notification is an example of an alert message (emergency information, warning information), and is, for example, a notification including at least one of the Emergency Broadcast Request in step S102 or the Write-Replace Warning Request NG-RAN message in step S103 of FIG. 3. The PWS notification includes an "alert type", an "alert message", an "affected area", and a "period (valid period of the message)".

[0045] The PWS filter may be, for example, a condition (criterion) for specifying the users and / or areas to which the PWS notification is to be distributed. That is, the PWS filter has a function of filtering the distribution targets. For example, using the PWS filter, the alert message may be limited and distributed to a specific geographical area affected by a disaster or an emergency. For example, using the PWS filter, the PWS notification may be filtered from the distribution targets based on user attributes (such as the age of the user, family composition, etc.). Further, for example, using the PWS filter, the distribution targets and the distribution method may be changed according to the alert type (such as earthquake, tsunami, etc.) and / or the alert level (urgency).

[0046] For example, different PWS filters may be set for each gNB 10 based on the location information of the gNB 10. The location information of the gNB 10 may be, for example, the geographical location where the gNB 10 is installed (including indoors or outdoors) or the location of the cell (area) provided by the gNB 10.

[0047] In step S12, the gNB 10 sets the PWS filter based on the received PWS filter settings.

[0048] In step S13, the PWS system 30 transmits a set including one or more PWS notifications to the gNB 10 via the AMF 30A.

[0049] In step S14, the gNB 10 applies a PWS filter to one or more PWS notifications it has received.

[0050] In step S15, the gNB 10 generates an SIB based on the PWS notifications to which the PWS filter has been applied. For example, the gNB 10 generates an SIB based on one or more received PWS notifications that conform to the PWS filter. The generated SIB includes the contents of the PWS notification ("alarm type", "alarm message", "affected area", and "duration (message validity period)").

[0051] In step S16, gNB 10 sends an SIB containing the PWS notification. UE 20 receives the SIB containing the sent PWS notification.

[0052] Thus, the alarm system in this embodiment can filter alarm messages on the RAN side.

[0053] According to this embodiment, by applying filtering to alarm messages on the RAN side, alarm messages can be delivered only to affected areas and target users, thereby reducing wasted network resources.

[0054] According to this embodiment, filtering based on user attribute information (e.g., age, family structure) and alarm type becomes possible, enabling the provision of messages suitable for specific targets.

[0055] According to this embodiment, it becomes possible to apply different PWS filter settings to each node based on the location information of the RAN node (gNB), enabling flexible responses according to the characteristics of disasters and emergencies.

[0056] According to this embodiment, filtering processing on the RAN side enables rapid processing of emergency messages and real-time delivery to the necessary recipients.

[0057] According to this embodiment, by generating an SIB based on notification content to which a PWS filter has been applied, it is possible to accurately deliver necessary information while minimizing the number of messages received by the user device.

[0058] According to this embodiment, it becomes possible to provide detailed notifications according to the type and urgency of disasters and emergencies, which can contribute to reducing damage and promoting rapid evacuation.

[0059] (Device Configuration) Next, an example of the functional configuration of the base station (NG-RAN 10), network node (UPF 30, AS 40), and terminal (UE 20) that perform the processing and operations described above will be explained. The base station 10, network node, and terminal 20 include the functions that implement the embodiment described above. However, the base station 10, network node, and UE 20 may each have only some of the functions in the embodiment.

[0060] <Base Station and Network Nodes> Figure 6 shows an example of the functional configuration of a base station 10 and network nodes (UPF 30, AS 40). As shown in Figure 6, the base station 10 has a transmitting unit 110, a receiving unit 120, a setting unit 130, and a control unit 140. The functional configuration shown in Figure 6 is merely an example. Any functional classification and functional unit names are acceptable as long as they enable the operation according to this embodiment. Network nodes may have the same functional configuration as the base station 10. Furthermore, network nodes with multiple different functions in the system architecture may be composed of multiple network nodes separated by function.

[0061] The transmitting unit 110 includes the function of generating a signal to be transmitted to the UE 20 or other network nodes and transmitting the signal by wire or wireless. The receiving unit 120 includes the function of receiving various signals transmitted from the UE 20 or other network nodes and obtaining information from the received signals, for example, information from a higher layer. A communication unit including the transmitting unit 110 and the receiving unit 120 may be configured.

[0062] The setting unit 130 stores pre-configured setting information and various setting information to be transmitted to the UE 20 in a storage device, and reads it from the storage device as needed.

[0063] The control unit 140 performs the processing described in the embodiment. The control unit 140 also performs processing related to communication with the UE 20. The signal transmission function in the control unit 140 may be included in the transmission unit 110, and the signal reception function in the control unit 140 may be included in the reception unit 120.

[0064] <UE> Figure 7 is a diagram showing an example of the functional configuration of UE 20 (terminal). As shown in Figure 7, UE 20 has a transmitting unit 210, a receiving unit 220, a setting unit 230, and a control unit 240. The functional configuration shown in Figure 7 is just one example. Any functional classification and functional unit names are acceptable as long as they enable the operation according to this embodiment.

[0065] The transmitting unit 210 creates a transmission signal from the transmission data and transmits the transmission signal wirelessly. The receiving unit 220 wirelessly receives various signals and obtains signals from higher layers from the received physical layer signals. The receiving unit 220 also has the function of receiving control signals or reference signals transmitted from network nodes. A communication unit including the transmitting unit 210 and the receiving unit 220 may be configured.

[0066] The configuration unit 230 stores various configuration information received from network nodes by the receiving unit 220 in its storage device and reads it from the storage device as needed. The configuration unit 230 also stores pre-configured configuration information.

[0067] The control unit 240 performs the processing described in the embodiment. The signal transmission function in the control unit 240 may be included in the transmission unit 210, and the signal reception function in the control unit 240 may be included in the reception unit 220.

[0068] (Hardware Configuration) The block diagrams (Figures 6 and 7) used in the description of the above embodiments show functional units. These functional blocks (components) are realized by any combination of at least one of hardware and software. Furthermore, the method of realizing each functional block is not particularly limited. That is, each functional block may be realized using one device that is physically or logically coupled, or it may be realized using two or more physically or logically separated devices that are directly or indirectly connected (for example, using wired or wireless connections). A functional block may be realized by combining the one device or the multiple devices with software.

[0069] Functions include, but are not limited to, judgment, decision, determination, calculation, calculation, processing, derivation, investigation, exploration, confirmation, reception, transmission, output, access, resolution, selection, selection, establishment, comparison, assumption, expectation, assumption, broadcasting, notifying, communicating, forwarding, configuring, reconfiguring, allocating (mapping), and assigning. For example, a functional block (configuration part) that enables transmission is called a transmitting unit or transmitter. In all cases, as mentioned above, the method of implementation is not particularly limited.

[0070] For example, the base station 10, network node, UE 20, etc. in one embodiment of the present disclosure may function as a computer that processes the wireless communication method of the present disclosure. Figure 8 is a diagram showing an example of the hardware configuration of the base station 10 and UE 20 according to one embodiment of the present disclosure. The network node may have a hardware configuration similar to that of the base station 10. The base station 10 and UE 20 described above may be physically configured as a computer device including a processor 1001, a storage device 1002, an auxiliary storage device 1003, a communication device 1004, an input device 1005, an output device 1006, a bus 1007, etc.

[0071] In the following explanation, the term "device" can be replaced with "circuit," "device," "unit," etc. The hardware configuration of base station 10 and UE 20 may include one or more of the devices shown in the figure, or it may be configured to omit some of the devices.

[0072] Each function in the base station 10 and UE 20 is realized by loading predetermined software (programs) onto hardware such as the processor 1001 and storage device 1002, which allows the processor 1001 to perform calculations, control communication by the communication device 1004, and control at least one of data reading and writing in the storage device 1002 and auxiliary storage device 1003.

[0073] The processor 1001 controls the entire computer, for example, by running an operating system. The processor 1001 may consist of a central processing unit (CPU) that includes interfaces with peripheral devices, control devices, arithmetic units, registers, etc. For example, the control unit 140, control unit 240, etc., described above may be implemented by the processor 1001.

[0074] Furthermore, the processor 1001 reads programs (program code), software modules, or data from at least one of the auxiliary storage device 1003 and the communication device 1004 into the storage device 1002, and executes various processes accordingly. The program used is one that causes the computer to execute at least a part of the operations described in the above embodiment. For example, the control unit 140 of the base station 10 shown in Figure 6 may be implemented by a control program stored in the storage device 1002 and operated by the processor 1001. Also, for example, the control unit 240 of the UE 20 shown in Figure 7 may be implemented by a control program stored in the storage device 1002 and operated by the processor 1001. Although the above-described processes have been explained as being executed by one processor 1001, they may be executed simultaneously or sequentially by two or more processors 1001. The processor 1001 may be implemented by one or more chips. The program may also be transmitted from the network via a telecommunications line.

[0075] The storage device 1002 is a computer-readable recording medium and may consist of at least one of the following: ROM (Read Only Memory), EPROM (Erasable Programmable ROM), EEPROM (Electrically Erasable Programmable ROM), RAM (Random Access Memory), etc. The storage device 1002 may also be called a register, cache, main memory, etc. The storage device 1002 can store executable programs (program code), software modules, etc., for implementing a communication method according to one embodiment of the present disclosure.

[0076] The auxiliary storage device 1003 is a computer-readable recording medium and may consist of at least one of the following: an optical disc such as a CD-ROM (Compact Disc ROM), a hard disk drive, a flexible disk, a magneto-optical disk (e.g., a compact disk, a digital multipurpose disk, a Blu-ray® disk), a smart card, flash memory (e.g., a card, a stick, a key drive), a floppy® disk, a magnetic strip, etc. The above-mentioned storage medium may also be a database, server, or other suitable medium that includes at least one of the storage device 1002 and the auxiliary storage device 1003.

[0077] The communication device 1004 is hardware (transmitting / receiving device) for communicating between computers via at least one of a wired network and a wireless network, and is also referred to as a network device, network controller, network card, communication module, etc. The communication device 1004 may be configured to include, for example, a high-frequency switch, duplexer, filter, frequency synthesizer, etc., in order to implement at least one of frequency division duplex (FDD) and time division duplex (TDD). For example, the transmitting and receiving antenna, amplifier section, transmitting and receiving section, transmission path interface, etc., may be implemented by the communication device 1004. The transmitting and receiving section may be implemented in a physically or logically separated manner, with a transmitting section and a receiving section.

[0078] The input device 1005 is an input device that accepts input from an external source (e.g., a keyboard, mouse, microphone, switch, button, sensor, etc.). The output device 1006 is an output device that outputs to an external source (e.g., a display, speaker, LED lamp, etc.). The input device 1005 and the output device 1006 may be configured as an integrated unit (e.g., a touch panel).

[0079] Furthermore, each device, such as the processor 1001 and the storage device 1002, is connected by a bus 1007 for communicating information. The bus 1007 may be configured using a single bus, or different buses may be configured for each device.

[0080] Furthermore, the base station 10 and UE 20 may be configured to include hardware such as a microprocessor, a digital signal processor (DSP), an ASIC (Application Specific Integrated Circuit), a PLD (Programmable Logic Device), and an FPGA (Field Programmable Gate Array), and some or all of each functional block may be realized by such hardware. For example, the processor 1001 may be implemented using at least one of these hardware components.

[0081] Figure 9 shows an example of the configuration of vehicle 2001. As shown in Figure 9, vehicle 2001 includes a drive unit 2002, a steering unit 2003, an accelerator pedal 2004, a brake pedal 2005, a shift lever 2006, front wheels 2007, rear wheels 2008, an axle 2009, an electronic control unit 2010, various sensors 2021 to 2029, an information service unit 2012, and a communication module 2013. Each aspect / embodiment described in this disclosure may be applied to a communication device mounted on vehicle 2001, for example, to the communication module 2013.

[0082] The drive unit 2002 consists of, for example, an engine, a motor, or a hybrid of an engine and a motor. The steering unit 2003 includes at least a steering wheel (also called a handle) and is configured to steer at least one of the front wheels and the rear wheels based on the operation of the steering wheel, which is operated by the user.

[0083] The electronic control unit 2010 consists of a microprocessor 2031, memory (ROM, RAM) 2032, and communication ports (IO ports) 2033. Signals from various sensors 2021 to 2029 installed in the vehicle 2001 are input to the electronic control unit 2010. The electronic control unit 2010 may also be called an ECU (Electronic Control Unit).

[0084] Signals from various sensors 2021 to 2029 include current signals from current sensor 2021 for sensing motor current, front and rear wheel rotation speed signals acquired by rotation speed sensor 2022, front and rear wheel air pressure signals acquired by air pressure sensor 2023, vehicle speed signals acquired by vehicle speed sensor 2024, acceleration signals acquired by acceleration sensor 2025, accelerator pedal depression signals acquired by accelerator pedal sensor 2029, brake pedal depression signals acquired by brake pedal sensor 2026, shift lever operation signals acquired by shift lever sensor 2027, and detection signals acquired by object detection sensor 2028 for detecting obstacles, vehicles, pedestrians, etc.

[0085] The Information Service Unit 2012 consists of various devices for providing (outputting) various types of information such as driving information, traffic information, and entertainment information, including a car navigation system, audio system, speakers, television, and radio, and one or more ECUs that control these devices. The Information Service Unit 2012 uses information acquired from external devices via a communication module 2013, etc., to provide various multimedia information and multimedia services to the occupants of the vehicle 2001. The Information Service Unit 2012 may include input devices that accept input from the outside (e.g., keyboard, mouse, microphone, switch, button, sensor, touch panel, etc.) and output devices that perform output to the outside (e.g., display, speaker, LED lamp, touch panel, etc.).

[0086] The driver assistance system unit 2030 consists of various devices that provide functions to prevent accidents or reduce the driver's workload, such as millimeter-wave radar, LiDAR (Light Detection and Ranging), cameras, positioning locators (e.g., GNSS), map information (e.g., high-definition (HD) maps, autonomous vehicle (AV) maps), gyro systems (e.g., IMU (Inertial Measurement Unit), INS (Inertial Navigation System)), AI (Artificial Intelligence) chips, and AI processors, as well as one or more ECUs that control these devices. The driver assistance system unit 2030 also transmits and receives various information via the communication module 2013 to realize driver assistance functions or autonomous driving functions.

[0087] The communication module 2013 can communicate with the microprocessor 2031 and components of the vehicle 2001 via its communication port. For example, the communication module 2013 sends and receives data via the communication port 2033 between the drive unit 2002, steering unit 2003, accelerator pedal 2004, brake pedal 2005, shift lever 2006, front wheels 2007, rear wheels 2008, axle 2009, the microprocessor 2031 and memory (ROM, RAM) 2032 in the electronic control unit 2010, and sensors 2021-29 provided in the vehicle 2001.

[0088] The communication module 2013 is a communication device that can be controlled by the microprocessor 2031 of the electronic control unit 2010 and can communicate with external devices. For example, it can send and receive various types of information with external devices via wireless communication. The communication module 2013 may be located either inside or outside the electronic control unit 2010. The external device may be, for example, a base station or a mobile station.

[0089] The communication module 2013 may transmit at least one of the following to an external device via wireless communication: signals from the various sensors 2021-2028 input to the electronic control unit 2010, information obtained based on said signals, and information based on input from an external source (user) obtained via the information service unit 2012. The electronic control unit 2010, the various sensors 2021-2028, the information service unit 2012, etc., may also be called input units that accept input. For example, the PUSCH transmitted by the communication module 2013 may include the information based on the above input.

[0090] The communication module 2013 receives various information (traffic information, signal information, inter-vehicle information, etc.) transmitted from an external device and displays it on the information service unit 2012 provided in the vehicle 2001. The information service unit 2012 may also be called an output unit, which outputs information (for example, outputs information to devices such as displays and speakers based on the PDSCH (or data / information decoded from the PDSCH) received by the communication module 2013). The communication module 2013 also stores the various information received from the external device in a memory 2032 that can be used by the microprocessor 2031. Based on the information stored in the memory 2032, the microprocessor 2031 may control the drive unit 2002, steering unit 2003, accelerator pedal 2004, brake pedal 2005, shift lever 2006, front wheels 2007, rear wheels 2008, axles 2009, sensors 2021-2029, etc., provided in the vehicle 2001.

[0091] <Notes> (Note 1) A base station comprising: a receiving unit that receives alarm messages from a network node that controls the distribution of alarm messages; and a control unit that applies a predetermined filter to the received alarm messages. (Note 2) The base station according to Note 1, wherein the receiving unit receives setting information for the predetermined filter from the network node. (Note 3) The base station according to Note 1, comprising: a transmitting unit that broadcasts information including alarm messages to which the predetermined filter has been applied. (Note 4) The base station according to Note 1, wherein the predetermined filter is a filtering condition based on at least one of the following: the type of alarm of the alarm message, the geographical area to be distributed, the user attributes to be distributed, or the urgency of the alarm message. (Note 5) The base station according to Note 3, wherein the control unit applies the predetermined filter to one or more alarm messages, and the transmitting unit broadcasts information including only alarm messages that conform to the predetermined filter. (Appendix 6) A communication method performed by a base station, comprising the steps of: receiving an alarm message from a network node that controls the distribution of alarm messages; and applying a predetermined filter to the received alarm message.

[0092] In any of the above configurations, the alarm system can efficiently and effectively control the distribution of alarm messages through filtering in the wireless access network.

[0093] (Supplement to Embodiments) Although these embodiments have been described above, the disclosed invention is not limited to these embodiments, and those skilled in the art will understand various modifications, alterations, alternatives, substitutions, etc. Specific numerical examples have been used to facilitate understanding of the invention, but unless otherwise specified, these numerical values ​​are merely examples, and any appropriate values ​​may be used. The division of items in the above description is not essential to the present invention, and matters described in two or more items may be combined as needed, and matters described in one item may be applied to matters described in another item (as long as they do not contradict each other). The boundaries of functional units or processing units in the functional block diagram do not necessarily correspond to the boundaries of physical parts. The operation of multiple functional units may be physically performed by one part, or the operation of one functional unit may be physically performed by multiple parts. The processing procedures described in the embodiments may be rearranged as long as they do not contradict each other. For the convenience of explaining the processing, the base station 10 and UE 20 have been described using functional block diagrams, but such devices may be implemented in hardware, software, or a combination thereof. The software operated by the processor of the base station 10 according to this embodiment and the software operated by the processor of the UE 20 according to this embodiment may be stored in any suitable storage medium such as random access memory (RAM), flash memory, read-only memory (ROM), EPROM, EEPROM, register, hard disk (HDD), removable disk, CD-ROM, database, server, or other appropriate storage medium.

[0094] Furthermore, notification of information is not limited to the embodiments described herein and may be carried out by other means. For example, notification of information may be carried out by physical layer signaling (e.g., DCI (Downlink Control Information), UCI (Uplink Control Information)), upper layer signaling (e.g., RRC (Radio Resource Control) signaling, MAC (Medium Access Control) signaling), broadcast information (MIB (Master Information Block), SIB (System Information Block)), other signals, or combinations thereof. Also, RRC signaling may be called RRC messages, and may be, for example, RRC Connection Setup messages, RRC Connection Reconfiguration messages, etc.

[0095] Each aspect / embodiment described in this disclosure refers to LTE (Long Term Evolution), LTE-A (LTE-Advanced), SUPER 3G, IMT-Advanced, 4G (4th generation mobile communication system), 5G (5th generation mobile communication system), 6th generation mobile communication system (6G), xth generation mobile communication system (xG) (xG (where x is, for example, an integer or decimal)), FRA (Future Radio Access), NR (new Radio), New radio access (NX), Future generation radio access (FX), W-CDMA (registered trademark), GSM (registered trademark), CDMA2000, UMB (Ultra Mobile Broadband), IEEE 802.11 (Wi-Fi (registered trademark)), IEEE 802.16 (WiMAX (registered trademark)), IEEE 802.20 may apply to at least one system utilizing UWB (Ultra-WideBand), Bluetooth®, or other appropriate systems, and to next-generation systems extended, modified, created, or defined based thereon. Alternatively, multiple systems may be applied in combination (e.g., a combination of at least one of LTE and LTE-A with 5G).

[0096] The processing procedures, sequences, flowcharts, etc., of each aspect / embodiment described herein may be reordered, provided they are consistent with each other. For example, the methods described herein present various step elements in an exemplary order and are not limited to that specific order.

[0097] In this specification, specific operations performed by the base station 10 may, in some cases, be performed by its upper node. In a network consisting of one or more network nodes having a base station 10, it is clear that various operations performed for communication with the UE 20 can be performed by the base station 10 and at least one of the other network nodes (for example, an MME or S-GW, but not limited to these). Although the above example illustrates the case where there is one other network node besides the base station 10, the other network node may be a combination of multiple other network nodes (for example, an MME and an S-GW).

[0098] The information or signals described in this disclosure may be output from a higher layer (or lower layer) to a lower layer (or higher layer). They may also be input and output via multiple network nodes.

[0099] Input and output information may be stored in a specific location (e.g., memory) or managed using a management table. Input and output information may be overwritten, updated, or appended to. Output information may be deleted. Input information may be transmitted to other devices.

[0100] The determination in this disclosure may be made by a value represented by one bit (0 or 1), by a Boolean value (true or false), or by a numerical comparison (for example, a comparison with a predetermined value).

[0101] Software should be broadly interpreted to mean instructions, instruction sets, code, code segments, program code, programs, subprograms, software modules, applications, software applications, software packages, routines, subroutines, objects, executable files, execution threads, procedures, functions, and so on, whether they are called software, firmware, middleware, microcode, hardware description languages, or by any other name.

[0102] Furthermore, software, instructions, information, etc., may be transmitted and received via a transmission medium. For example, if software is transmitted from a website, server, or other remote source using at least one of wired technology (such as coaxial cable, fiber optic cable, twisted pair, or digital subscriber line (DSL)) and wireless technology (such as infrared or microwave), then at least one of these wired and wireless technologies is included in the definition of a transmission medium.

[0103] The information, signals, etc. described in this disclosure may be represented using any of the various different techniques. For example, the data, instructions, commands, information, signals, bits, symbols, chips, etc. that may be referred to throughout the above description may be represented by voltage, current, electromagnetic waves, magnetic fields or magnetic particles, optical fields or photons, or any combination thereof.

[0104] In addition, terms used in this disclosure and terms necessary for understanding this disclosure may be replaced with terms having the same or similar meanings. For example, at least one of the channel and symbol may be a signal (signaling). Also, a signal may be a message. Furthermore, a component carrier (CC) may be called a carrier frequency, cell, frequency carrier, etc.

[0105] The terms “system” and “network” as used in this disclosure are interchangeable.

[0106] Furthermore, the information, parameters, etc., described in this disclosure may be expressed using absolute values, relative values ​​from a given value, or other corresponding information. For example, wireless resources may be indicated by an index.

[0107] The names used for the parameters described above are not restrictive in any way. Furthermore, the formulas and other expressions using these parameters may differ from those expressly disclosed in this disclosure. Various channels (e.g., PUCCH, PDCCH, etc.) and information elements can be identified by any suitable name, and therefore, the various names assigned to these various channels and information elements are not restrictive in any way.

[0108] In this disclosure, terms such as "Base Station (BS)", "wireless base station", "base station equipment", "fixed station", "NodeB", "eNodeB (eNB)", "gNodeB (gNB)", "access point", "transmission point", "reception point", "transmission / reception point", "cell", "sector", "cell group", "carrier", and "component carrier" may be used interchangeably. Base stations may also be referred to by terms such as macrocell, small cell, femtocell, and picocell.

[0109] A base station can accommodate one or more (e.g., three) cells. If a base station accommodates multiple cells, the entire coverage area of ​​the base station can be divided into multiple smaller areas, each of which may also be provided with communication services by a base station subsystem (e.g., a Remote Radio Head (RRH)). The terms “cell” or “sector” refer to part or all of the coverage area of ​​at least one of the base station and / or base station subsystems that provide communication services in that coverage.

[0110] In this disclosure, the transmission of information by a base station to a terminal may be interpreted as the base station instructing the terminal to perform control or operation based on the information.

[0111] In this disclosure, terms such as "Mobile Station (MS)," "user terminal," "User Equipment (UE)," and "terminal" may be used interchangeably.

[0112] A mobile station may also be referred to by those skilled in the art as a subscriber station, mobile unit, subscriber unit, wireless unit, remote unit, mobile device, wireless device, wireless communication device, remote device, mobile subscriber station, access terminal, mobile terminal, wireless terminal, remote terminal, handset, user agent, mobile client, client, or several other appropriate terms.

[0113] At least one of the base station and the mobile station may be called a transmitting device, a receiving device, a communication device, etc. At least one of the base station and the mobile station may also be a device mounted on a mobile body, the mobile body itself, etc. The mobile body refers to a movable object, and its speed of movement is arbitrary. This also includes the case when the mobile body is stationary. The mobile body includes, but is not limited to, vehicles, transport vehicles, automobiles, motorcycles, bicycles, connected cars, excavators, bulldozers, wheel loaders, dump trucks, forklifts, trains, buses, handcarts, rickshaws, ships and other watercraft, airplanes, rockets, satellites, drones (registered trademark), multicopters, quadcopters, balloons, and items mounted on them. The mobile body may also be a mobile body that moves autonomously based on operation commands. It may be a vehicle (e.g., a car, an airplane, etc.), an unmanned mobile body (e.g., a drone, an autonomous vehicle, etc.), or a robot (manned or unmanned). Furthermore, at least one of the base station and the mobile station may include devices that do not necessarily move during communication operations. For example, at least one of the base station and the mobile station may be an IoT (Internet of Things) device such as a sensor.

[0114] Furthermore, the term "base station" in this disclosure may be interpreted as "user terminal." For example, the various aspects / embodiments of this disclosure may be applied to a configuration in which communication between a base station and a user terminal is replaced with communication between multiple terminals (which may be called, for example, D2D (Device-to-Device), V2X (Vehicle-to-Everything), etc.). In this case, the terminal may have the functions that the base station has as described above. Also, terms such as "uplink" and "downlink" may be interpreted as terms corresponding to terminal-to-terminal communication (for example, "side"). For example, uplink channel, downlink channel, etc., may be interpreted as side channel.

[0115] Similarly, the term "user terminal" in this disclosure may be replaced with "base station." In this case, the base station may be configured to have the same functions as the user terminal described above.

[0116] As used in this disclosure, the terms “determining” and “determining” may encompass a wide variety of actions. “Determining” may include, for example, judging, calculating, computing, processing, deriving, investigating, looking up, searching, or inquiring (e.g., searching in a table, database, or other data structure), or ascertaining. “Determining” may also include receiving (e.g., receiving information), transmitting (e.g., sending information), inputting, outputting, or accessing (e.g., accessing data in memory). Furthermore, "judgment" and "decision" can include considering something as having been "judged" or "decided" after resolving, selecting, choosing, establishing, comparing, etc. In other words, "judgment" and "decision" can include considering something as having been "judged" or "decided" after some action. Also, "judgment (decision)" can be reinterpreted as "assuming," "expecting," or "considering."

[0117] The terms “connected,” “coupled,” or any variation thereof, mean any direct or indirect connection or coupling between two or more elements, and may include the presence of one or more intermediate elements between two elements that are “connected” or “coupled” with each other. The coupling or connection between elements may be physical, logical, or a combination thereof. For example, “connection” may be reinterpreted as “access.” As used in this disclosure, two elements may be considered to be “connected” or “coupled” with each other using at least one of one or more wires, cables, and printed electrical connections, and, in some non-limiting and non-exclusive examples, electromagnetic energy having wavelengths in the radio frequency domain, microwave domain, and optical (both visible and invisible) domain.

[0118] The reference signal can also be abbreviated as RS (Reference Signal), and may be called a pilot depending on the applicable standard.

[0119] In this disclosure, the phrase "based on" does not mean "based solely on" unless otherwise specified. In other words, the phrase "based on" means both "based solely on" and "based at least on."

[0120] Any reference to elements using the designations “first,” “second,” etc., as used in this disclosure does not generally limit the quantity or order of those elements. These designations may be used in this disclosure as a convenient way to distinguish between two or more elements. Accordingly, references to the first and second elements do not imply that only two elements may be employed, or that the first element must precede the second element in any way.

[0121] In the configuration of each of the above devices, "means" may be replaced with "part," "circuit," "device," etc.

[0122] Where the terms “include,” “including,” and variations thereof are used in this disclosure, these terms are intended to be inclusive, as is the term “comprising.” Furthermore, the term “or” as used in this disclosure is not intended to mean exclusive OR.

[0123] In this disclosure, if articles are added through translation, such as a, an, and the in English, this disclosure may include the fact that the noun following these articles is plural.

[0124] In this disclosure, the term "A and B are different" may mean "A and B are different from each other." The term may also mean "A and B are each different from C." Terms such as "separate" and "combine" may be interpreted similarly to "different."

[0125] Each aspect / embodiment described in this disclosure may be used individually, in combination, or switched between as needed during implementation. Furthermore, notification of specific information (e.g., notification that "X is") is not limited to explicit notification, but may also be implicit (e.g., by not providing such notification).

[0126] Although the present disclosure has been described in detail above, it will be clear to those skilled in the art that the present disclosure is not limited to the embodiments described herein. The present disclosure can be implemented in modified and altered forms without departing from the intent and scope of the present disclosure as defined by the claims. Therefore, the descriptions in the present disclosure are illustrative and not intended to be restrictive in any way.

[0127] 10 Base station 110 Transmitting unit 120 Receiving unit 130 Setting unit 140 Control unit 20 Terminal 210 Transmitting unit 220 Receiving unit 230 Setting unit 240 Control unit 30 Network node 1001 Processor 1002 Storage device 1003 Auxiliary storage device 1004 Communication device 1005 Input device 1006 Output device 2001 Vehicle 2002 Drive unit 2003 Steering unit 2004 Accelerator pedal 2005 Brake pedal 2006 Shift lever 2007 Front wheel 2008 Rear wheel 2009 Axle 2010 Electronic control unit 2012 Information service unit 2013 Communication module 2021 Current sensor 2022 Rotation speed sensor 2023 Air pressure sensor 2024 Vehicle speed sensor 2025 Acceleration sensor 2026 Brake pedal sensor 2027 Shift lever sensor 2028 Object detection sensor 2029 Accelerator pedal sensor 2030 Driver assistance system unit 2031 Microprocessor 2032 Memory (ROM, RAM) 2033 Communication port (I / O port)

Claims

1. A base station comprising: a receiving unit that receives alarm messages from a network node that controls the distribution of alarm messages; and a control unit that applies a predetermined filter to the received alarm messages.

2. The base station according to claim 1, wherein the receiving unit receives the setting information of the predetermined filter from the network node.

3. The base station according to claim 1, comprising a transmitting unit that broadcasts information including an alarm message to which the predetermined filter has been applied.

4. The base station according to claim 1, wherein the predetermined filter is a filtering condition based on at least one of the following: the type of alarm of the alarm message, the geographical area to be delivered, the user attributes to be delivered, or the urgency of the alarm message.

5. The base station according to claim 3, wherein the control unit applies the predetermined filter to one or more alarm messages, and the transmission unit broadcasts information containing only alarm messages that conform to the predetermined filter.

6. A communication method performed by a base station, comprising the steps of: receiving an alarm message from a network node that controls the distribution of alarm messages; and applying a predetermined filter to the received alarm message.

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