JP2021009424A - Server and on-vehicle device - Google Patents

Abstract

To provide a technique for reducing a signaling amount in a vehicle wireless communication system.SOLUTION: A server is connected to vehicles by communication via a base station. The server includes: a notification area setting section for setting a notification area to notify a vehicle of vehicle information; and a communication control section for transmitting area information indicating the set notification area to a vehicle, and receiving vehicle information from a vehicle within the notification area.SELECTED DRAWING: Figure 4

Description

The present invention relates to a wireless communication system.

Currently, trials and verifications of LTE (Long Term Evolution) V2X (Vehicle-to-Everything) are progressing rapidly, and the attention of LTE V2X is very high. For connected cars including V2X, for example, securing inter-operability, cost efficiency by implementing higher layers, combined use and switching of multiple technologies, compliance with regulations in each country, data acquisition and distribution of LTE V2X platform, and database It is expected that management and usage methods will be considered.

In a typical vehicle wireless communication system, as shown in FIG. 1, each vehicle or in-vehicle device transmits vehicle information such as position information to an ITS (Intelligent Transport System) server via a base station, and the ITS server sends each vehicle. Alternatively, various information related to the surrounding area such as accident information and traffic jam information is transmitted to the in-vehicle device. At this time, in order to support various use cases of V2X by using unicast communication with each vehicle, a specific in-vehicle device or vehicle (for example, within a certain area) to which information is distributed on the downlink is specified. Therefore, it is necessary to track the position of the vehicle. Therefore, periodic or steady communication for acquiring the position information of the vehicle is required, and the amount of signaling increases.

In view of the above-mentioned problems, an object of the present invention is to provide a technique for reducing the amount of signaling in a vehicle wireless communication system.

In order to solve the above problems, one aspect of the present invention is a server that communicates with and connects to a vehicle via a base station, and includes a notification area setting unit that sets a notification area for causing the vehicle to notify vehicle information, and the above. The present invention relates to a server having a communication control unit that transmits area information indicating a set notification area to the vehicle and receives the vehicle information from a vehicle in the notification area.

According to the present invention, the amount of signaling in the vehicle wireless communication system can be reduced.

FIG. 1 is a schematic diagram showing an example of signaling from a vehicle to an ITS server. FIG. 2 is a schematic view showing an example of signaling from a vehicle to an ITS server according to an embodiment of the present invention. FIG. 3 is a schematic view showing a wireless communication system according to an embodiment of the present invention. FIG. 4 is a block diagram showing a functional configuration of a server according to an embodiment of the present invention. FIG. 5 is a schematic view showing an example of setting a notification area according to an embodiment of the present invention. FIG. 6 is a schematic view showing an example of expressing the starting point of the notification area according to the embodiment of the present invention. FIG. 7 is a schematic view showing an example of representation of the notification area according to an embodiment of the present invention. FIG. 8 is a schematic view showing an example of setting a notification area according to an embodiment of the present invention. FIG. 9 is a block diagram showing a functional configuration of an in-vehicle device according to an embodiment of the present invention. FIG. 10 is a block diagram showing a hardware configuration of a server, an in-vehicle device, and a base station according to an embodiment of the present invention.

Hereinafter, embodiments of the present invention will be described with reference to the drawings.

In the following embodiment, a vehicle wireless communication system in which an in-vehicle device can communicate with a server via a base station is disclosed. In the vehicle wireless communication system according to the embodiment described later, as shown in FIG. 2, the server such as the ITS server sets a notification area for notifying the vehicle of vehicle information (position information, etc.), and the set notification. Area information indicating the area is transmitted to each vehicle. Each vehicle determines whether the vehicle is in the notification area based on the area information received from the server, and if it is in the notification area, transmits the vehicle information to the server. As a result, the opportunity for transmitting vehicle information can be reduced as compared with the case where each vehicle periodically transmits vehicle information to the server regardless of the traveling position, and the amount of signaling between the in-vehicle device and the server can be reduced. Can be reduced.

First, a wireless communication system according to an embodiment of the present invention will be described with reference to FIG. FIG. 3 is a schematic view showing a wireless communication system according to an embodiment of the present invention.

As shown in FIG. 3, the wireless communication system 10 is, for example, a vehicle wireless communication system, and includes a base station 50, a server 100, and an in-vehicle device 200 mounted on each vehicle.

The base station 50 receives downlink data from the server 100 and the core network (not shown), and transmits the received downlink data to the in-vehicle device 200 by various wireless signals. Further, the base station 50 transmits the radio signal received from the in-vehicle device 200 as uplink data to the server 100 and the core network. In the illustrated embodiment, only one base station 50 is shown, but typically a large number of base stations 50 are arranged to cover the communication area of the wireless communication system 10.

The server 100 is typically an ITS server, and receives vehicle information such as position information, traveling information, and vehicle ID from each in-vehicle device 200 via the base station 50, and accident information and traffic congestion in each in-vehicle device 200. Traffic information such as information, various control information for controlling and / or supporting the in-vehicle device 200 (support information for vehicle-to-vehicle communication, etc.) are transmitted.

The in-vehicle device 200 is typically mounted in advance in the vehicle, acquires vehicle information indicating the state of the vehicle such as position information and traveling information, and transmits the acquired vehicle information to the server 100 via the base station 50. , Receives various information from the server 100. However, the in-vehicle device 200 is not limited to this, and may be a user device (UE) such as a smartphone or tablet carried by a passenger of the vehicle such as a driver or a passenger. In this case, the vehicle-mounted device 200 may, for example, transmit the vehicle information acquired through the vehicle application installed in the user device to the server 100 and receive various information from the server 100.

The following examples will be described with reference to the in-vehicle device 200 mounted on a vehicle such as an automobile. However, the in-vehicle device 200 is not limited to this, and more generally, it may be a user device mounted on other means of transportation such as a train, a ship, an aircraft, a belt conveyor, and an escalator.

Next, a server according to an embodiment of the present invention will be described with reference to FIG. The server 100 according to the present embodiment distributes various information around each vehicle such as accident information and traffic jam information, and also provides support information for supporting wireless communication (inter-vehicle communication, etc.) by the in-vehicle device 200. It may be a possible ITS server. FIG. 4 is a block diagram showing a functional configuration of a server according to an embodiment of the present invention.

As shown in FIG. 4, the server 100 has a notification area setting unit 110 and a communication control unit 120.

The notification area setting unit 110 sets a notification area for causing the vehicle to notify the vehicle information. That is, the server 100 does not cause the server 100 to periodically transmit vehicle information regardless of the position of the vehicle, but only when the vehicle is in the notification area and / or in the notification area. , The vehicle-mounted device 200 may transmit the vehicle information to the server 100. As a result, the opportunity for transmitting vehicle information can be reduced, and the amount of signaling between the in-vehicle device 200 and the server 100 can be reduced.

In one embodiment, the notification area setting unit 110 may set the notification area based on the geographical characteristics or historical information about the area. Specifically, the notification area setting unit 110 may set the notification area based on geographical characteristics such as intersections, tunnels, areas around bridges, and school routes. Further, the notification area setting unit 110 may set the notification area based on the history information regarding the past events in the area such as the accident frequent occurrence area and the traffic congestion frequent occurrence area. As a result, the server 100 can transmit various information to the vehicle in order to encourage the vehicle in the notification area to travel more carefully.

Further, in one embodiment, the notification area setting unit 110 may dynamically set the notification area in response to information from the vehicle indicating that the vehicle is in a predetermined traveling state. For example, when a vehicle detects a hazard object such as an accident vehicle or an obstacle on the road, the in-vehicle device 200 transmits state transition information indicating that the vehicle has reached a predetermined running state to the server 100 together with position information. .. In response to the state transition information, the notification area setting unit 110 sets the area around the detected hazard object as the notification area. Further, the communication control unit 120 may specify a vehicle in and / or in the vicinity of the notification area as a communication target vehicle, and provide the in-vehicle device 20 with information on the specified communication target vehicle. In addition, when the vehicle is in a specific running state (blinker operation, brake operation, hazard lamp operation, parking / stopping, high-speed running, sudden stop by brake, etc.), the in-vehicle device 200 uses the state transition information and / or the running state as a server. In response to the state transition information and / or the traveling state by transmitting to 100, the notification area setting unit 110 may set the peripheral area of the vehicle in the traveling state as the notification area. For example, as shown in FIG. 5, when the blinker operation is performed in the vehicle for changing the course, the in-vehicle device 200 transmits the state transition information and / or the traveling state to the server 100 via the base station 50 together with the position information. .. Upon receiving the state transition information and / or the traveling state, the notification area setting unit 110 sets the area around the received position information as the notification area, and notifies each vehicle of the area information indicating the set notification area. Further, the communication control unit 120 may specify a vehicle in and / or in the vicinity of the notification area as a communication target vehicle, and provide the in-vehicle device 20 with information on the specified communication target vehicle. As a result, the server 100 can quickly grasp the high-risk area that is autonomously provided by each vehicle and requires more careful driving, and is more careful with respect to the vehicle in the notification area. It is possible to transmit various information to the vehicle to encourage a comfortable driving. Further, the above-mentioned dynamic notification area setting makes it possible to flexibly set the notification area according to the actual traffic condition as compared with the case where the notification area is statically preset.

The communication control unit 120 transmits the area information indicating the set notification area to the vehicle, and receives the vehicle information from the vehicle in the notification area. Specifically, the communication control unit 120 may transmit the area information by unicast or may transmit by multicast.

For example, the communication control unit 120 may specify a vehicle in the notification area and / or a vehicle in the vicinity of the notification area based on the acquired position information, and unicast the area information to the specified vehicle. According to unicast transmission, area information can be reliably transmitted by confirming delivery.

Alternatively, the communication control unit 120 may multicast the area information to the notification area and the surrounding area by using a distribution method such as MBMS (Multicast Broadcast Multicast Service) or ETWS (Earthquake and Tsunami Warning System). According to the multicast transmission, the area information can be easily transmitted without using the vehicle position information.

In one embodiment, the notification area setting unit 110 may set a geographical range starting from the position of the base station 50 as the notification area. Area information may be defined by the origin of the notification area and the geographical range from the origin. Specifically, as shown in FIG. 6, the starting point may be represented by a position relative to a specific base station 50, for example, relative to the base station 50 to which the in-vehicle device 200 is wirelessly connected. It may be represented by a position. Alternatively, the starting point may be represented by a relative position with respect to a reference point (such as a city hall building). Alternatively, the starting point may be represented by an absolute position that can be positioned by a GPS (Global Positioning System) satellite or the like. Then, the area information may be represented by the geographical range from the starting point expressed in this way. Specifically, the geographical range from the starting point may be represented by the shape, size and rotation of the geographical range centered on the starting point, as shown in FIG. 7A. For example, the geographical range is an angle (for example, an angle formed by an east-west direction) of a rectangle having a length in the major axis direction (for example, east-west direction) and the minor axis direction (for example, north-south direction) about the starting point. ) May be expressed as rotated. Alternatively, the geographical range from the starting point may be expressed as a polygon having a relative position from the starting point with the starting point as the center, as shown in FIG. 7B.

The method of expressing the area information is not limited to these, and any other appropriate method capable of defining the geographical range may be used. Further, the notification area is not limited to the geographical range on the plane, and may have a spatial range in the three-dimensional space. For example, when the in-vehicle device 200 is mounted on an aircraft such as a drone, the notification area can be set as a spatial range in a three-dimensional space.

Further, in one embodiment, the communication control unit 120 may cause the vehicle to transmit vehicle information when the vehicle enters the notification area. That is, the communication control unit 120 may cause the vehicle to transmit vehicle information when the vehicle straddles the notification area (Geofence). In this case, the entry of the vehicle into the notification area can be a trigger for reporting vehicle information. For example, as shown in FIG. 8A, when the vehicle enters the notification area from outside the notification area, the vehicle-mounted device 200 may transmit the vehicle information to the server 100. Further, when the vehicle leaves the notification area from the notification area, the in-vehicle device 200 may notify the end of communication. As a result, when the server 100 receives the vehicle information from the vehicle, it can determine that the vehicle has entered the notification area, and when it receives the communication end notification, it can determine that the vehicle has left the notification area.

Alternatively, in one embodiment, the communication control unit 120 may cause the vehicle to periodically transmit vehicle information while the vehicle is in the notification area. That is, the communication control unit 120 may make the vehicle continuously transmit the vehicle information while the vehicle is in the notification area (Geofence). This allows the server 100 to keep track of the vehicle while it is in the notification area. For example, as shown in FIG. 8B, the vehicle-mounted device 200 may periodically transmit vehicle information to the server 100 while the vehicle is in the notification area. The notification cycle may be set by the in-vehicle device 200 or the server 100. Specifically, the notification cycle may be adjusted according to the traveling state of the vehicle (for example, moving speed, driving condition). For example, the notification cycle may be set shorter as the vehicle moves faster. Further, when the blinker operation is detected in the vehicle, the notification cycle may be set to a value different from the value based on the moving speed. Generally, the movement speed decreases when the course is changed, but the notification cycle is not shortened as the speed decreases, but is set to the value before the course change or a value in the vicinity thereof so that the danger can be detected more quickly. May be good. In addition, when it is detected that the vehicle has started moving from a stopped state (for example, transition from brake operation to access operation, side brake off operation, etc.), the notification cycle is set to a value different from the value based on the moving speed. May be done. Further, when another vehicle is detected at a position D meters (for example, 100 meters) away in the notification area by vehicle-to-vehicle communication (PC5, etc.), the uplink communication (Uu) to the base station 50 is stopped. May be good.

Next, an in-vehicle device according to an embodiment of the present invention will be described with reference to FIG. FIG. 9 is a block diagram showing a functional configuration of an in-vehicle device according to an embodiment of the present invention.

As shown in FIG. 9, the vehicle-mounted device 200 has a vehicle management unit 210 and a wireless control unit 220.

The vehicle management unit 210 manages the state of the vehicle. Specifically, the vehicle management unit 210 monitors the vehicle state such as the position and running state of the vehicle, and provides the monitoring result to the wireless control unit 220.

The wireless control unit 220 transmits vehicle information to the server 100 when the vehicle is within the notification area set by the server 100. For example, the vehicle management unit 210 determines whether the vehicle is in the notification area set by the server 100 based on the area information received from the server 100 and the current position of the vehicle, and determines that the vehicle is in the notification area. The position information of the vehicle may be notified to the wireless control unit 220. Upon receiving the position information, the wireless control unit 220 may determine that the vehicle is in the notification area and transmit the received position information to the server 100 as vehicle information.

In one embodiment, when the vehicle management unit 210 detects that the vehicle is in a predetermined running state (blinker operation, brake operation, hazard lamp operation, parking / stopping, high-speed running, sudden stop by brake, etc.), the wireless control unit The 220 may notify the server 100 that the vehicle has reached a predetermined traveling state. Specifically, when the vehicle management unit 210 detects that the running state of the vehicle is in a predetermined running state (blinker operation, brake operation, hazard lamp operation, parking / stopping, high-speed running, sudden stop by brake, etc.), The radio control unit 220 may be notified of the state transition information indicating that the vehicle has reached a predetermined running state together with the position information. Upon receiving the state transition information and the position information, the wireless control unit 220 may transmit the received position information and the state transition information to the server 100. Upon receiving the position information and the state transition information, the server 100 sets the notification area based on the received position information, identifies the vehicle in and / or in the vicinity of the notification area as the communication target vehicle, and identifies the communication target. Provide information about the vehicle to the requesting vehicle.

In one embodiment, the radio control unit 220 may transmit vehicle information when the vehicle enters the notification area, or may periodically transmit vehicle information while the vehicle is in the notification area. Such a method of reporting vehicle information may be set by the in-vehicle device 200 or the server 100. Further, when the vehicle information is periodically transmitted while the vehicle is in the notification area, the wireless control unit 220 may adjust the notification cycle according to the traveling state (for example, moving speed, driving condition) of the vehicle. .. For example, the notification cycle may be set shorter as the vehicle moves faster. Further, when the blinker operation is detected in the vehicle, the notification cycle may be set to a value different from the value based on the moving speed. In addition, when it is detected that the vehicle has started moving from a stopped state (for example, transition from brake operation to access operation, side brake off operation, etc.), the notification cycle is set to a value different from the value based on the moving speed. May be done.

Next, an operation as an example of the server 100 and the in-vehicle device 200 when the vehicle changes lanes will be described. For example, when the vehicle 1 changes lanes, the vehicle-mounted device 200 of the vehicle 1 transmits a target vehicle request for requesting information about another vehicle 2 to the server 100. Specifically, when the blinker operation is detected in the vehicle 1, the in-vehicle device 200 determines that the vehicle 1 changes lanes, and together with the position information of the vehicle 1, information on another vehicle 2 to be subject to inter-vehicle communication. The target vehicle request for requesting may be transmitted to the server 100.

Upon receiving the target vehicle request, the server 100 sets the area around the vehicle 1 as a notification area (Geofence), and multicasts or unicasts the area information indicating the set notification area to the vehicles 2 around the vehicle 1. To do. Specifically, the server 100 sets the lane in which the vehicle 1 exists and the lane adjacent to the lane as the notification area based on the received position information, and provides the area information indicating the set notification area to the vehicles around the vehicle 1. Multicast or unicast transmission to 2. When the surrounding vehicle 2 that has received the area information is in the notification area, it transmits vehicle information such as position information, running state, and vehicle ID to the server 100, and the server 100 transmits the vehicle information such as the vehicle ID to the server 100 based on the received vehicle information. Vehicle 2 to be the target of vehicle-to-vehicle communication can be determined, and vehicle information of each other can be transmitted to the paired vehicles 1 and 2.

When the lane change is completed, the vehicle-mounted device 200 of the vehicle 1 notifies the server 100 of the end of the lane change. Specifically, when it is detected that the blinker operation is turned off in the vehicle 1, the in-vehicle device 200 may determine that the lane change is completed and transmit the lane change end notification to the server 100. Upon receiving the lane change end notification, the server 100 may notify the vehicle 2 of the cancellation of the notification area.

Next, an operation as an example of the server 100 and the in-vehicle device 200 when the vehicle passes through the intersection where the notification area is set will be described. For example, when each vehicle straddles the notification area (Geofence) set at the intersection from outside the notification area to within the notification area, the vehicle is subject to inter-vehicle communication together with vehicle information such as position information, running state, and vehicle ID. The target vehicle request for requesting information about the vehicle 2 may be transmitted to the server 100.

When a vehicle in the notification area periodically transmits vehicle information to the server 100, the server 100 identifies vehicles around the source vehicle of the target vehicle request, and the source vehicle and surrounding vehicles. Based on the vehicle information received from, the vehicle to be the target of vehicle-to-vehicle communication can be determined, and each other's vehicle information can be transmitted to the paired vehicle.

When the source vehicle passes through the intersection, that is, when the notification area is crossed from the inside of the notification area to the outside of the notification area, the in-vehicle device 200 determines that the intersection has been completed and transmits the intersection passage end notification to the server 100. You may. Upon receiving the intersection passage end notification, the server 100 may notify the surrounding vehicles of the cancellation of the notification area.

The block diagram used in the description of the above embodiment shows a block of functional units. These functional blocks (components) are realized by any combination of hardware and / or software. Further, the means for realizing each functional block is not particularly limited. That is, each functional block may be realized by one physically and / or logically coupled device, or directly and / or indirectly by two or more physically and / or logically separated devices. (For example, wired and / or wireless) may be connected and realized by these plurality of devices.

For example, the base station 50, the server 100, and the in-vehicle device 200 according to the embodiment of the present invention may function as a computer that processes the wireless communication method of the present invention. FIG. 10 is a block diagram showing a hardware configuration of a base station 50, a server 100, and an in-vehicle device 200 according to an embodiment of the present invention. The base station 50, the server 100, and the in-vehicle device 200 are physically configured as a computer device including a processor 1001, a memory 1002, a storage 1003, a communication device 1004, an input device 1005, an output device 1006, a bus 1007, and the like. You may.

In the following description, the word "device" can be read as a circuit, device, unit, or the like. The hardware configuration of the base station 50, the server 100, and the in-vehicle device 200 may be configured to include one or more of the devices shown in the figure, or may be configured not to include some of the devices. ..

Each function of the base station 50, the server 100, and the in-vehicle device 200 is performed by the processor 1001 performing calculations by loading predetermined software (program) on hardware such as the processor 1001 and the memory 1002, and communication by the communication device 1004. It is realized by controlling the reading and / or writing of data in the memory 1002 and the storage 1003.

Processor 1001 operates, for example, an operating system to control the entire computer. The processor 1001 may be composed of a central processing unit (CPU) including an interface with a peripheral device, a control device, an arithmetic unit, a register, and the like. For example, each of the above components may be implemented in processor 1001.

Further, the processor 1001 reads a program (program code), a software module, and data from the storage 1003 and / or the communication device 1004 into the memory 1002, and executes various processes according to these. As the program, a program that causes a computer to execute at least a part of the operations described in the above-described embodiment is used. For example, the processing by each component of the base station 50, the server 100, and the in-vehicle device 200 may be realized by a control program stored in the memory 1002 and operated by the processor 1001, and is also realized for other functional blocks. You may. Although it has been described that the various processes described above are executed by one processor 1001, they may be executed simultaneously or sequentially by two or more processors 1001. Processor 1001 may be mounted on one or more chips. The program may be transmitted from the network via a telecommunication line.

The memory 1002 is a computer-readable recording medium, and is composed of at least one such as a ROM (Read Only Memory), an EPROM (Erasable Programmable ROM), an EEPROM (Electrically Erasable Programmable ROM), and a RAM (Random Access Memory). May be done. The memory 1002 may be referred to as a register, a cache, a main memory (main storage device), or the like. The memory 1002 can store a program (program code), a software module, or the like that can be executed to carry out the wireless communication method according to the embodiment of the present invention.

The storage 1003 is a computer-readable recording medium, for example, an optical disk such as a CD-ROM (Compact Disc ROM), a hard disk drive, a flexible disk, an optical magnetic disk (for example, a compact disk, a digital versatile disk, a Blu-ray). It may consist of at least one (registered trademark) disk), smart card, flash memory (eg, card, stick, key drive), floppy (registered trademark) disk, magnetic strip, and the like. The storage 1003 may be referred to as an auxiliary storage device. The storage medium described above may be, for example, a database, server or other suitable medium containing memory 1002 and / or storage 1003.

The communication device 1004 is hardware (transmission / reception device) for performing communication between computers via a wired and / or wireless network, and is also referred to as, for example, a network device, a network controller, a network card, a communication module, or the like. For example, each of the above components may be realized in the communication device 1004.

The input device 1005 is an input device (for example, a keyboard, a mouse, a microphone, a switch, a button, a sensor, etc.) that receives an input from the outside. The output device 1006 is an output device (for example, a display, a speaker, an LED lamp, etc.) that outputs to the outside. The input device 1005 and the output device 1006 may have an integrated configuration (for example, a touch panel).

Further, each device such as the processor 1001 and the memory 1002 is connected by a bus 1007 for communicating information. The bus 1007 may be composed of a single bus or may be composed of different buses between the devices.

Further, the base station 50, the server 100 and the in-vehicle device 200 include a microprocessor, a digital signal processor (DSP: Digital Signal Processor), an ASIC (Application Specific Integrated Circuit), a PLD (Programmable Logic Device), and an FPGA (Field Programmable Gate Array). It may be configured to include such hardware, and a part or all of each functional block may be realized by the hardware. For example, processor 1001 may be implemented on at least one of these hardware.

The notification of information is not limited to the embodiments / embodiments described herein, and may be made by other methods. For example, information notification includes physical layer signaling (for example, DCI (Downlink Control Information), UCI (Uplink Control Information)), upper layer signaling (for example, RRC (Radio Resource Control) signaling, MAC (Medium Access Control) signaling, etc. It may be carried out by notification information (MIB (Master Information Block), SIB (System Information Block)), other signals, or a combination thereof. Further, the RRC signaling may be referred to as an RRC message, and may be, for example, an RRC Connection Setup message, an RRC Connection Reconfiguration message, or the like.

Each aspect / example described herein includes LTE (Long Term Evolution), LTE-A (LTE-Advanced), SUPER 3G, IMT-Advanced, 4G, 5G, FRA (Future Radio Access), W-CDMA. (Registered Trademarks), GSM (Registered Trademarks), CDMA2000, UMB (Ultra Mobile Broadband), IEEE 802.11 (Wi-Fi), IEEE 802.16 (WiMAX), IEEE 802.20, UWB (Ultra-WideBand), It may be applied to systems utilizing Bluetooth®, other suitable systems and / or next-generation systems extended based on them.

The processing procedures, sequences, flowcharts, and the like of each aspect / embodiment described in the present specification may be rearranged as long as there is no contradiction. For example, the methods described herein present elements of various steps in an exemplary order, and are not limited to the particular order presented.

In some cases, the specific operation performed by the base station 50 in the present specification may be performed by its upper node. In a network consisting of one or more network nodes having a base station, various operations performed for communication with the terminal are performed on the base station and / or other network nodes other than the base station (for example,). It is clear that it can be done by (but not limited to) MME or S-GW. Although the case where there is one network node other than the base station is illustrated above, it may be a combination of a plurality of other network nodes (for example, MME and S-GW).

Information and the like can be output from the upper layer (or lower layer) to the lower layer (or upper layer). Input / output may be performed via a plurality of network nodes.

The input / output information and the like may be stored in a specific location (for example, a memory), or may be managed by a management table. Input / output information and the like can be overwritten, updated, or added. The output information and the like may be deleted. The input information or the like may be transmitted to another device.

The determination may be made by a value represented by 1 bit (0 or 1), by a boolean value (Boolean: true or false), or by comparing numerical values (for example, a predetermined value). It may be done by comparison with the value).

Each of the embodiments / examples described in the present specification may be used alone, in combination, or switched with execution. Further, the notification of predetermined information (for example, the notification of "being X") is not limited to the explicit one, but is performed implicitly (for example, the notification of the predetermined information is not performed). May be good.

Although the present invention has been described in detail above, it is clear to those skilled in the art that the present invention is not limited to the embodiments described herein. The present invention can be implemented as modifications and modifications without departing from the spirit and scope of the present invention as defined by the claims. Therefore, the description of the present specification is for the purpose of exemplification and does not have any limiting meaning to the present invention.

Software, whether referred to as software, firmware, middleware, microcode, hardware description language, or by any other name, is an instruction, instruction set, code, code segment, program code, program, subprogram, software module. , Applications, software applications, software packages, routines, subroutines, objects, executables, execution threads, procedures, features, etc. should be broadly interpreted to mean.

Further, software, instructions, and the like may be transmitted and received via a transmission medium. For example, the software uses wired technology such as coaxial cable, fiber optic cable, twist pair and digital subscriber line (DSL) and / or wireless technology such as infrared, wireless and microwave to websites, servers, or other When transmitted from a remote source, these wired and / or wireless technologies are included within the definition of transmission medium.

The information, signals, etc. described herein may be represented using any of a variety of different techniques. For example, data, instructions, commands, information, signals, bits, symbols, chips, etc. that may be referred to throughout the above description are voltages, currents, electromagnetic waves, magnetic fields or magnetic particles, light fields or photons, or any of these. It may be represented by a combination of.

In addition, the terms described in the present specification and / or the terms necessary for understanding the present specification may be replaced with terms having the same or similar meanings. For example, the channel and / or symbol may be a signal. Also, the signal may be a message. Further, the component carrier (CC) may be referred to as a carrier frequency, a cell, or the like.

The terms "system" and "network" as used herein are used interchangeably.

Further, the information, parameters, etc. described in the present specification may be represented by an absolute value, a relative value from a predetermined value, or another corresponding information. .. For example, the radio resource may be indexed.

The names used for the above parameters are not limited in any way. Further, mathematical formulas and the like using these parameters may differ from those expressly disclosed herein. Since the various channels (eg, PUCCH, PDCCH, etc.) and information elements (eg, TPC, etc.) can be identified by any suitable name, the various names assigned to these various channels and information elements are in any respect. However, it is not limited.

A base station can accommodate one or more (eg, three) cells (also called sectors). When a base station accommodates multiple cells, the entire coverage area of the base station can be divided into multiple smaller areas, each smaller area being a base station subsystem (eg, small indoor base station RRH: Remote). Communication services can also be provided by Radio Head). The term "cell" or "sector" refers to a part or all of the coverage area of a base station and / or base station subsystem that provides communication services in this coverage. In addition, the terms "base station," "eNB," "cell," and "sector" may be used interchangeably herein. Base stations are sometimes referred to by terms such as fixed station, NodeB, eNodeB (eNB), access point, femtocell, and small cell.

Mobile stations can be subscriber stations, mobile units, subscriber units, wireless units, remote units, mobile devices, wireless devices, wireless communication devices, remote devices, mobile subscriber stations, access terminals, mobile terminals, wireless, depending on the trader. It may also be referred to as a terminal, remote terminal, handset, user agent, mobile client, client, or some other suitable term.

As used herein, the terms "determining" and "determining" may include a wide variety of actions. "Judgment", "decision" is, for example, calculating, computing, processing, deriving, investigating, looking up (eg, table, database or another). It can include searching in the data structure), and considering that confirming is "judgment" and "decision". Also, "judgment" and "decision" are receiving (for example, receiving information), transmitting (for example, transmitting information), input (input), output (output), and access. (Accessing) (for example, accessing data in memory) may be regarded as "judgment" or "decision". In addition, "judgment" and "decision" mean that "resolving", "selecting", "choosing", "establishing", "comparing", etc. are regarded as "judgment" and "decision". Can include. That is, "judgment" and "decision" may include that some action is regarded as "judgment" and "decision".

The terms "connected", "coupled", or any variation thereof, mean any direct or indirect connection or connection between two or more elements, and each other. It can include the presence of one or more intermediate elements between two "connected" or "combined" elements. The connection or connection between the elements may be physical, logical, or a combination thereof. As used herein, the two elements are by using one or more wires, cables and / or printed electrical connections, and, as some non-limiting and non-comprehensive examples, radio frequencies. It can be considered to be "connected" or "coupled" to each other by using electromagnetic energies such as electromagnetic energies having wavelengths in the region, microwave region and light (both visible and invisible) regions.

The reference signal may also be abbreviated as RS (Reference Signal) and may be referred to as a pilot depending on the applied standard.

As used herein, the phrase "based on" does not mean "based on" unless otherwise stated. In other words, the statement "based on" means both "based only" and "at least based on".

Any reference to elements using designations such as "first", "second" as used herein does not generally limit the quantity or order of those elements. These designations can be used herein as a convenient way to distinguish between two or more elements. Thus, references to the first and second elements do not mean that only two elements can be adopted there, or that the first element must somehow precede the second element.

The "means" in the configuration of each of the above devices may be replaced with a "part", a "circuit", a "device" and the like.

As long as "include", "include", and variations thereof are used herein or in the claims, these terms are similar to the term "comprising". Is intended to be inclusive. Furthermore, the term "or" as used herein or in the claims is intended not to be an exclusive OR.

The radio frame may consist of one or more frames in the time domain. Each one or more frames in the time domain may be referred to as a subframe. Subframes may further consist of one or more slots in the time domain. Slots may further be composed of one or more symbols (OFDM symbols, SC-FDMA symbols, etc.) in the time domain. Radio frames, subframes, slots, and symbols all represent time units when transmitting signals. Radio frames, subframes, slots, and symbols may have different names corresponding to each. For example, in an LTE system, a base station schedules each mobile station to allocate radio resources (frequency bandwidth, transmission power, etc. that can be used by each mobile station). The minimum time unit for scheduling may be called TTI (Transmission Time Interval). For example, one subframe may be referred to as TTI, a plurality of consecutive subframes may be referred to as TTI, and one slot may be referred to as TTI. A resource block (RB) is a resource allocation unit in the time domain and frequency domain, and may include one or more consecutive subcarriers in the frequency domain. The time domain of the resource block may also include one or more symbols and may be one slot, one subframe, or one TTI in length. One TTI and one subframe may each consist of one or more resource blocks. The structure of the radio frame described above is merely an example, the number of subframes contained in the radio frame, the number of slots contained in the subframe, the number of symbols and resource blocks contained in the slots, and the subs contained in the resource block. The number of carriers can be changed in various ways.

Although the examples of the present invention have been described in detail above, the present invention is not limited to the above-mentioned specific embodiments, and various modifications are made within the scope of the gist of the present invention described in the claims.・ Can be changed.

10 Wireless communication system 50 Base station 100 Server 200 In-vehicle device

Claims (8)

A server that communicates with a vehicle via a base station.
A notification area setting unit that sets a notification area for causing the vehicle to notify vehicle information,
A communication control unit that transmits area information indicating the set notification area to the vehicle and receives the vehicle information from the vehicle in the notification area.
Server with. The server according to claim 1, wherein the notification area setting unit dynamically sets the notification area in response to information from the vehicle indicating that the vehicle has reached a predetermined running state. The server according to claim 1 or 2, wherein the notification area setting unit sets the notification area based on geographical characteristics or historical information about the area. The communication control unit causes the vehicle to transmit the vehicle information when the vehicle enters the notification area, or periodically transmits the vehicle information to the vehicle while the vehicle is in the notification area. The server according to any one of claims 1 to 3 to be transmitted. An in-vehicle device that communicates with a server via a base station.
The vehicle management department that manages the condition of the vehicle and
A wireless control unit that transmits vehicle information to the server when the vehicle is within the notification area set by the server.
In-vehicle device having. The vehicle according to claim 5, wherein when the vehicle management unit detects that the vehicle is in a predetermined running state, the wireless control unit notifies the server that the vehicle is in a predetermined running state. apparatus. 5. The wireless control unit transmits the vehicle information when the vehicle enters the notification area, or periodically transmits the vehicle information while the vehicle is in the notification area. Or the in-vehicle device according to 6. The vehicle-mounted device according to claim 7, wherein when the vehicle information is periodically transmitted while the vehicle is in the notification area, the wireless control unit adjusts the notification cycle according to the traveling state of the vehicle.

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