JP2010178296A - Base station device and radio station device - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a base station device and a radio station device capable of efficiently collecting probe information. <P>SOLUTION: When a vehicle newly enters a communication area of a base station device, the base station device collects probe information by managing an in-vehicle unit ID transmitted by the vehicle, assigning sufficient resources to a vehicle located within a designated area desired to collect probe information selectively at short transmission intervals on the basis of an air flag which is information included in the probe information when collecting the probe information indicating whether or not the vehicle is located within the designated area, and assigning other resources than resources of the designated area to vehicles located within a non-designated area at long transmission intervals corresponding to the number of the vehicles. <P>COPYRIGHT: (C)2010,JPO&INPIT

Description

  The present invention relates to a base station apparatus and a radio station apparatus.

  Conventionally, as a technique for collecting probe information from a passing vehicle in order to grasp traffic conditions at an intersection or a specific area, for example, there are a navigation system and a signal control application.

  Specifically, in a navigation system, mobile history information (probe information) generated by a vehicle is centered at intervals of several minutes to several tens of minutes using a mobile phone or PHS (Personal Handy phone System). The latest road information and the optimal travel route are distributed to the vehicle.

  Also, in a signal control application, it is important to feed back the collected probe information in real time, unlike a navigation system that only needs to collect probe information at a certain time interval. And in order to grasp changes in traffic conditions in real time, it is necessary to shorten the probe information collection cycle, but the available radio resources are limited, so if the number of vehicles passing increases, the bandwidth will be insufficient. End up.

  Therefore, recently, even in the case of passing vehicles, even if the communication band is preferentially allocated to vehicles that particularly require resources or the number of vehicles in the communication area covered by the base station has increased, There is a technology for effectively using a band by changing the frequency itself of the wireless zone to be used.

JP 2003-224505 A

  However, the above-described conventional technique has a problem that the probe information cannot be collected efficiently. Specifically, when applying the above-described conventional technology, a vehicle is identified from a camera image or the like installed on the road side, and a lot of resources are allocated to a vehicle at a location where probe information is to be collected preferentially, or the traffic of the vehicle It is difficult to simply introduce a mechanism for changing the frequency band used by the base station according to the number of units. In addition, as a result of complicated processing by introducing various mechanisms, the above-described conventional technology cannot efficiently collect probe information.

  Therefore, in order to solve the above-described problems of the related art, an object of the present invention is to provide a base station apparatus and a radio station apparatus that can efficiently collect probe information.

  In order to solve the above-described problems and achieve the object, the present invention is based on current position information notified from a wireless station apparatus capable of wireless communication, and within a region where the current position of the wireless station apparatus is determined in advance. A first time zone included in a radio band used by the own device when it is determined by the region determination unit and the region determination unit to determine whether or not it is within the region. Included in the radio band used by the own apparatus when it is determined by the area determining means that the wireless station apparatus is not within the area at a time interval, the first time band allocating means allocating to the wireless time area used by the wireless station apparatus The second time zone, which is a time zone other than the first time zone, is used by the radio station device at a second time interval longer than the first time interval according to the number of the radio station devices. Assign to the second radio time domain And between band allocation unit, to have a be a requirement.

  According to the present invention, there is an effect that probe information can be efficiently collected.

FIG. 1 is a diagram for explaining an outline of a base station apparatus according to the present invention. FIG. 2 is a diagram illustrating a configuration example of the base station apparatus according to the first embodiment. FIG. 3 is a diagram illustrating an example of geographical information held and controlled by the area control unit. FIG. 4 is a diagram illustrating an example of information held and controlled by the in-designated in-vehicle device controller. FIG. 5 is a diagram showing an example of information held and controlled by the in-designated in-vehicle device controller. FIG. 6 is a diagram illustrating an example of information held and controlled by the in-designated in-vehicle device control unit. FIG. 7 is a diagram showing an example of information held and controlled by the in-designated in-vehicle device control unit. FIG. 8 is a diagram illustrating an example of information held and controlled by the communication resource control unit. FIG. 9 is a diagram for explaining an example of a data structure of a frame according to the first embodiment. FIG. 10 is a flowchart illustrating the flow of resource allocation processing according to the first embodiment. FIG. 11 is a flowchart illustrating the flow of message processing according to the first embodiment. FIG. 12 is a flowchart illustrating the flow of the communication resource control process according to the first embodiment. FIG. 13 is a diagram illustrating an image of a cue to be attached and detached. FIG. 14 is a flowchart illustrating a process flow in the vehicle-mounted device according to the first embodiment. FIG. 15 is a diagram illustrating a configuration example of the vehicle-mounted device according to the second embodiment. FIG. 16 is a flowchart illustrating the flow of the resource selection process according to the second embodiment. FIG. 17 is a diagram illustrating an example of designated area information according to the second embodiment. FIG. 18 is a flowchart illustrating a flow of processing in the vehicle-mounted device according to the second embodiment. FIG. 19 is a schematic diagram illustrating an example of a data structure of a frame according to the third embodiment. FIG. 20 is a diagram illustrating a computer that executes a time slot allocation program. FIG. 21 is a diagram illustrating a computer that executes a time zone selection program.

  Embodiments of a base station apparatus and a radio station apparatus according to the present invention will be described below with reference to the accompanying drawings. In addition, this invention is not limited by the following examples.

  For example, as shown in FIG. 1, the disclosed base station device passes through a designated area in which the probe information is preferentially collected and a non-designated area other than the designated area. The probe information is collected from the in-vehicle device mounted on the vehicle to be transferred, and the collected probe information is transferred to the server. In addition, FIG. 1 is a figure for demonstrating the outline | summary of the base station apparatus which concerns on this invention.

  In-vehicle devices are devices capable of wireless communication, such as a navigation system and a mobile terminal device. Hereinafter, an example in which probe information to be collected is vehicle information (using an in-vehicle device) will be described. However, there are various types of information depending on the use of information on a moving object such as a person or an object, that is, probe information.

  In the configuration described above, the base station apparatus determines whether or not the current position of the radio station apparatus is within a predetermined area based on the current position information notified from the radio station apparatus capable of radio communication. To do. And when it is determined that the base station apparatus is within the area, the radio time area used by the radio station apparatus at the first time interval in the first time zone included in the radio band used by the own apparatus. Assign to. In addition, when it is determined that the base station device is not in the area, the base station device sets the second time zone, which is a time zone other than the first time zone included in the radio zone used by the own device, to the number of radio station devices. Accordingly, the second time interval longer than the first time interval is assigned to the radio time region used by the radio station device.

  More specifically, as shown in (1) of FIG. 1, the in-vehicle device continuously receives signals from a GPS (Global Positioning System) satellite and measures the position of the own vehicle. In addition, the base station device continuously transmits a signal including the designated area information to vehicles located in the communication area of the base station device. The in-vehicle device receives a signal including the designated area information from the base station device. Subsequently, the in-vehicle device transmits a link establishment request including a predetermined in-vehicle device ID to the base station device.

  Further, the base station apparatus recognizes that a new vehicle has entered the communication area of the base station apparatus, and transmits a link establishment response including the in-vehicle apparatus ID to the in-vehicle apparatus. Then, the base station apparatus transmits resource allocation information to the in-vehicle device. At this time, when the in-vehicle device recognizes that the own vehicle is located in the non-designated area based on the geographical information of the designated area information received from the base station device, the in-vehicle device does not send a resource request by itself. Wait for resources to be allocated from the device. For example, the resources that can be used in the non-designated area are resources other than the resources in the designated area (remaining resources), and the transmission interval to which the resource is assigned is longer or the same as the transmission interval in the designated area.

  Further, the in-vehicle device uses the resource allocation information transmitted from the base station device to transmit the own vehicle information including the area flag “OFF” indicating that the own vehicle is in a non-designated area. Send to. Further, the base station device transmits the vehicle information received from the in-vehicle device to the server. In short, while the vehicle-mounted device is in the non-designated area (see (1) in FIG. 1), the vehicle information is transmitted according to the resources that can be used in the non-designated area and the resource allocation transmission interval.

  Next, as shown in (2) of FIG. 1, when the in-vehicle device recognizes that the host vehicle is in the designated area, the in-vehicle device transmits a resource allocation request including the in-vehicle device ID to the base station device. When the base station apparatus receives a resource allocation request including the in-vehicle device ID, the base station apparatus transmits resource allocation information to the in-vehicle device having the in-vehicle device ID. Note that, for example, resources that can be used in the designated area are determined in advance like resources in the non-designated area, and the transmission interval to which the resource is assigned is shorter or the same as the transmission interval in the non-designated area.

  In addition, the in-vehicle device uses the resource allocation information transmitted from the base station apparatus to transmit the own vehicle information including the area flag “ON” indicating that the own vehicle is in the designated area to the base station apparatus. Send. Further, the base station device transmits the vehicle information received from the in-vehicle device to the server. In short, while the vehicle-mounted device is in the designated area (see (2) in FIG. 1), the vehicle information is transmitted according to the resources available in the designated area and the resource allocation transmission interval.

  Next, in a state where the resource allocation in the designated area by the base station apparatus is received, the in-vehicle device recognizes that the host vehicle is in the non-designated area as shown in (3) of FIG. The own vehicle information including the area flag “OFF” indicating that the own vehicle is in the non-designated area is transmitted to the base station apparatus.

  Further, the base station device transmits the vehicle information received from the in-vehicle device to the server. And a base station apparatus transmits the resource allocation information according to the said non-designated area with respect to the vehicle equipment which exists in a non-designated area. In short, when the vehicle-mounted device moves from the designated area to the non-designated area (see (3) in FIG. 1), the vehicle information is transmitted according to the resources that can be used in the non-designated area and the resource allocation transmission interval.

  Next, as shown in (4) of FIG. 1, when the vehicle-mounted device leaves the communication area of the base station device, the vehicle-mounted device transmits a link disconnection request including the vehicle-mounted device ID to the base station device. In addition, the base station device that has received the link disconnection request excludes the vehicle-mounted device having the corresponding vehicle-mounted device ID from the resource allocation target, and transmits a link disconnection response to the vehicle-mounted device.

  In other words, the base station apparatus is sufficient in accordance with the number of vehicles expected to exist in each area in a designated area to which sufficient resources are allocated and a non-designated area to which resources other than resources to be allocated to the specified areas are allocated. Therefore, it is possible to efficiently collect probe information even in a limited resource.

[Configuration of base station apparatus]
Next, the configuration of the base station apparatus according to the first embodiment is described with reference to FIG. FIG. 2 is a diagram illustrating a configuration example of the base station apparatus according to the first embodiment.

  As illustrated in FIG. 2, the base station device 100 includes a control unit 110, for example, assigns resources to a wireless station device such as a connected on-vehicle device capable of wireless communication, and notifies from the wireless station device. Probe information to be transmitted to the server.

  The control unit 110 includes an internal memory for storing a control program, a program defining various processing procedures, and necessary data, and in particular, a reception unit 111, a transmission unit 112, a message processing unit 113, an area The controller 114, the in-designated in-vehicle device controller 115, the non-designated in-vehicle device controller 116, and the communication resource controller 117 are used to execute various processes.

  For example, the reception unit 111 receives various messages such as a link establishment request, a resource request, and a link disconnection request transmitted from the in-vehicle device and probe information such as vehicle information.

  The transmission unit 112 transmits various messages and various service information such as a synchronization signal, resource allocation information, link establishment response, resource allocation response, and link disconnection response. For example, when receiving probe information from the in-vehicle device, the transmission unit 112 transmits the probe information to the server.

  For example, the message processing unit 113 generates various messages to be transmitted to the in-vehicle device and processes various messages received from the in-vehicle device. Specifically, the message processing unit 113 performs processing required for link establishment and link disconnection according to a link establishment request and a link disconnection request from the in-vehicle device, and generates a link establishment response and a link disconnection response message.

  Further, when the message processing unit 113 receives a resource request from the in-vehicle device, the message processing unit 113 notifies the in-vehicle device control unit 115 in the designated area in order to manage the in-vehicle device as the in-vehicle device in the designated area. Is located in the non-designated area, the in-vehicle device control unit 116 in the non-designated area is notified in order to manage the on-vehicle device as a car-mounted device in the non-designated area. The message processing unit 113 transmits (transfers) probe information received from the in-vehicle device to the server, and transmits (transfers) various information received from the server to the in-vehicle device.

  For example, the area control unit 114 holds and controls various information related to the designated area and the non-designated area. Specifically, the area control unit 114, as geographical information in the communication area of the base station device 100, is a “designated area ID”, “center latitude / longitude”, and “radius” when the area is a circular area. (See FIG. 3). Although FIG. 3 shows an example in which the designated area is a circle, the designated area may have a shape different from a circle such as an ellipse or a polygon. FIG. 3 is a diagram illustrating an example of geographical information held and controlled by the area control unit 114.

  Further, the area control unit 114 holds and controls resource allocation information that can be allocated to in-vehicle devices located in the designated area and the non-designated area, and for resources assigned to the in-vehicle devices located in the designated area, The number of vehicles existing in the designated area is obtained in advance from the observed traffic volume, and the necessary resources are estimated according to the resource allocation cycle. Note that a predetermined amount of resources is secured for resources allocated to the in-vehicle devices in the non-designated area.

  In addition, the period for assigning resources, which is the time interval for assigning resources to in-vehicle devices located in designated areas and non-designated areas, is determined in advance for designated areas and dynamically based on the number of vehicles for non-designated areas. It is determined. For example, in the designated area, 100 resources are allocated as sufficient resources even when the number of vehicles is large, and when the number of vehicles is 100, resources are allocated to all vehicles. Further, for example, in the non-designated area, 10 resources are allocated as resources, and when the number of vehicles is 100, resources are allocated to 10 vehicles and the remaining 90 units are allocated. The vehicle waits for resources to be allocated (resources are allocated at a rate of once every 10 times). In short, in the designated area, sufficient resources are transmitted at a short transmission interval. In the non-designated area, the transmission is performed at a long transmission interval according to the number of vehicles that use a resource other than the designated area and wait for the resource to be allocated. Regarding the transmission interval, it is not necessary to make the transmission interval of the designated area shorter than the transmission interval of the non-designated area, but if the designated area is congested and the non-designated area is empty, In order to prevent the number of transmissions of probe information of vehicles to exceed the number of transmissions of probe information of vehicles located in the designated area, it is preferable that the transmission interval of the designated area is shorter than the transmission interval of the non-designated area.

  For example, the in-designation in-vehicle device control unit 115 holds and controls the ID of the in-vehicle device located in the designated area. Specifically, as shown in FIG. 4, the in-designated in-vehicle device control unit 115 assigns resources to each in-vehicle device ID and in-vehicle device located in each designated area for each area ID for identifying the designated area. Hold the time. Note that the number of in-vehicle devices located in each designated area differs for each designated area. For example, in the designated area with the area ID “1”, the in-vehicle device IDs “2” and “5” and the area ID “2” are provided. In the designated area, an in-vehicle device having an in-vehicle device ID “1” is present. Moreover, FIG. 4 is a figure which shows the example of the information hold | maintained and controlled by the vehicle-mounted apparatus control part 115 in a designated area.

  Further, the information held and controlled by the in-designated in-vehicle device controller 115 may be in the queue format instead of the table format shown in FIG. For example, as shown in FIG. 5, the in-designated in-vehicle device controller 115 manages the in-vehicle device having the in-vehicle device ID “2” and the resource allocation time “t2” in the designated area of the area ID “1”. After the in-vehicle device ID “2”, there is an in-vehicle device with an in-vehicle device ID “5” (not shown). When managing in-vehicle devices in a queue format, the number of in-vehicle devices existing in each designated area (queue length) differs for each designated area. FIG. 5 is a diagram illustrating an example of information held and controlled by the in-designated-in-vehicle device control unit 115.

  For example, the in-non-designated-area in-vehicle device control unit 116 holds and controls the ID of the in-vehicle device located in the non-designated area. Specifically, as shown in FIG. 6, the in-non-designated-area in-vehicle device control unit 116 includes an area ID for identifying the non-designated area, an in-vehicle device ID located in the non-designated area, and a resource for each in-vehicle device. Is stored in association with the time at which is assigned. FIG. 6 shows a case where the area ID of the non-designated area is “0”, and the non-designated areas with the area ID “0” include the on-vehicle machines with the on-vehicle machine IDs “51” and “7”. Is in the area. Moreover, FIG. 6 is a figure which shows the example of the information hold | maintained and controlled by the vehicle equipment control part 116 in a non-designated area.

  Further, the information held and controlled by the in-designated-area in-vehicle device controller 116 may be in a queue format instead of the table format shown in FIG. For example, as shown in FIG. 7, the in-non-designated-area in-vehicle device control unit 116 manages the in-vehicle device having the in-vehicle device ID “51” and the resource allocation time “t51” in the designated area of the area ID “0”. And after the said vehicle equipment ID "51", the vehicle equipment of vehicle equipment ID "7" exists (not shown). FIG. 7 is a diagram illustrating an example of information held and controlled by the in-non-designated in-vehicle device controller 116.

  The communication resource control unit 117, for example, allocates resources to each on-vehicle device held by the in-designated in-vehicle device control unit 115 and the non-designated in-vehicle device control unit 116, by the area control unit 114. The resource allocation information reflecting the resource allocation result is generated.

  Specifically, as shown in FIG. 8, the communication resource control unit 117 manages the area ID and the determined number of resources in association with each other, geographical information of the designated area, link establishment response, link disconnection response, and resource The resource amount that can be allocated to each use of various control messages such as allocation response, collection of probe information, and other various services is managed, and the resource is allocated according to each resource amount. FIG. 8 shows a case where the area ID of the non-designated area is “0”, and the number of resources represents the number of in-vehicle devices to which resources can be allocated for each area in one frame. That is, in one frame, resources can be allocated to the total number of resources “r0 + r1 +... + Rn” in-vehicle devices. FIG. 8 is a diagram illustrating an example of information held and controlled by the communication resource control unit 117.

  Here, the data structure of the frame will be described with reference to FIG. FIG. 9 is a diagram for explaining an example of a data structure of a frame according to the first embodiment.

  For example, as illustrated in FIG. 9, a frame with the horizontal axis representing time and the vertical axis representing frequency includes a synchronization signal, resource allocation information, a downlink communication subframe, and an uplink communication subframe. For example, this frame is transmitted to the vehicle-mounted device by the base station apparatus 100 at a cycle of 5 msec, and the designation of resources to each vehicle-mounted device is performed at intervals of 2 seconds. That is, when the vehicle-mounted device has the vehicle-mounted device ID of the host vehicle in the transmitted frame, the vehicle-mounted device transmits the probe information using the specified resource, and the designation of this resource (the case where the vehicle-mounted device ID is included) The interval is 2 seconds.

  The synchronization signal is a signal indicating the start position of the frame, and the in-vehicle device sets the internal time based on the synchronization signal. The resource allocation information indicates the resource allocation status for each in-vehicle device, and the resource allocation status includes at least one in-vehicle device ID and downlink or uplink resource information allocated to each in-vehicle device.

  Moreover, resource information is represented by the group of the time domain (tm-tn) and frequency domain (fi-fj) allocated to each vehicle equipment. Note that the resource information may not be the set of the time domain and the frequency domain shown in FIG. 9, and may be, for example, only the time domain or only the frequency domain. The in-vehicle device ID may be a broadcast ID instead of a predetermined ID. When the broadcast ID is set, resources are allocated to all the in-vehicle devices.

  The downlink communication subframe and the uplink communication subframe are resources used for transmission / reception of a control signal, probe information, and the like between the base station apparatus 100 and the vehicle-mounted device. Note that a random access resource is defined as a control signal resource in a part of the uplink subframe. This random access resource is shared by all on-vehicle devices, and the transmission of messages such as link establishment requests, link disconnection requests, and resource requests, which are control signals, is individually performed from the base station apparatus 100 to each on-vehicle device. The message is transmitted by the resource (random access) autonomously selected by the in-vehicle device without being allocated.

  Although an example of a frame structure in WiMAX (Worldwide Interoperability for Microwave Access: registered trademark) is shown here, different wireless communication methods such as CDMA (Code Division Multiple Access) using code division may be used.

[Resource allocation process flow]
Next, the flow of resource allocation processing according to the first embodiment will be described with reference to FIG. FIG. 10 is a flowchart illustrating the flow of resource allocation processing according to the first embodiment. Here, a resource allocation process in the case where a passing vehicle deviates from the non-designated area, the designated area, the non-designated area, and the communication area of the base station apparatus 100 will be described.

  For example, as shown in FIG. 10, the in-vehicle device continuously receives signals from GPS satellites and the like, and measures the position of the host vehicle (step S101). In addition, the base station device 100 continuously transmits a signal including the designated area information to vehicles located in the communication area of the base station device 100 (step S102). The geographical information indicating the designated area is determined in advance by a system operator or the like.

  In addition, when the vehicle-mounted device receives a signal including the designated area information from the base station device 100, the vehicle-mounted device transmits a link establishment request including a predetermined vehicle-mounted device ID to the base station device 100 (step S103). Note that the in-vehicle device ID is not predetermined, and may be dynamically determined each time the vehicle enters the communication area of the base station device 100.

  Moreover, the base station apparatus 100 recognizes that a vehicle has newly entered the communication area of the base station apparatus 100 by a link establishment request from the in-vehicle apparatus, and transmits a link establishment response including the in-vehicle apparatus ID to the in-vehicle apparatus. (Step S104). Then, the base station apparatus 100 transmits resource allocation information to the in-vehicle device (step S105). When the in-vehicle device that has received the link establishment response recognizes that the vehicle is located in a non-designated area based on the geographical information of the designated area information received from the base station device 100, the in-vehicle device transmits a resource request. Without waiting for resources to be allocated from the base station apparatus 100. Further, when recognizing that the in-vehicle device is located in the non-designated area, the base station apparatus 100 manages the in-vehicle device ID of the in-vehicle device as the in-vehicle device located in the non-designated area.

  Then, the in-vehicle device uses the resource allocation information transmitted from the base station device 100 to obtain probe information including an area flag “OFF” indicating that the host vehicle is in a non-designated area. 100 is transmitted (step S106). Moreover, the base station apparatus 100 transmits the probe information received from the in-vehicle device to the server (step S107).

  Next, when the in-vehicle device recognizes that the host vehicle is in the designated area, the in-vehicle device transmits a resource allocation request including the in-vehicle device ID to the base station device 100 (step S108). Further, when receiving the resource allocation request including the in-vehicle device ID, the base station apparatus 100 manages the in-vehicle device having the in-vehicle device ID as a resource allocation target in a short period according to the designated area, and sends a resource allocation response. It transmits with respect to onboard equipment (step S109). Then, the base station apparatus 100 allocates resources at a predetermined short period, and transmits resource allocation information indicating that resources have been allocated to the in-vehicle device (step S110).

  In addition, the in-vehicle device uses the resource allocation information transmitted from the base station apparatus 100 to obtain probe information including an area flag “ON” indicating that the host vehicle is in the designated area. (Step S111). Moreover, the base station apparatus 100 transmits the probe information received from the in-vehicle device to the server (step S112).

  Next, in a state where the base station apparatus 100 receives the resource allocation in the designated area (step S113), when the in-vehicle device recognizes that the own vehicle is in the non-designated area, the own vehicle is not designated. Probe information including an area flag “OFF” indicating presence in the area is transmitted to the base station apparatus 100 (step S114).

  Moreover, the base station apparatus 100 transmits the probe information received from the in-vehicle device to the server (step S115). In addition, the base station apparatus 100 that has received the probe information including the area flag “OFF” indicating that it is in the non-designated area from the in-vehicle device manages the in-vehicle device as the in-vehicle device in the non-designated area. In addition, resource allocation information indicating that resources for the non-designated area have been allocated is transmitted to the in-vehicle device (step S116).

  Next, when the vehicle-mounted device leaves the communication area of the base station device 100, the vehicle-mounted device transmits a link release request (link disconnection request) including the vehicle-mounted device ID to the base station device 100 (step S117). In addition, the base station device 100 that has received the link disconnection request excludes the vehicle-mounted device having the corresponding vehicle-mounted device ID from the resource allocation target, and transmits a link release response (link disconnection response) to the vehicle-mounted device. (Step S118).

  Here, a case has been described in which the in-vehicle device notifies the base station apparatus 100 of the departure from the designated area by a flag defined in the header portion of the frame, but a control message for notifying the departure of the designated area has been described. The base station apparatus 100 may determine the position of the vehicle contained in the probe information received by the base station apparatus 100 and the geographical information of the designated area by collating them. good.

Message processing
Next, the flow of message processing according to the first embodiment will be described with reference to FIG. FIG. 11 is a flowchart illustrating the flow of message processing according to the first embodiment.

  As shown in FIG. 11, for example, when the message type is a link establishment request (step S201, link establishment request), the base station device 100 stores the vehicle unit ID included in the link establishment request in the non-designated area. It manages as a vehicle-mounted device to be in service, and transmits a link establishment response to the vehicle-mounted device (step S202).

  Further, for example, when the message type is a resource request (step S201, resource request), the base station device 100 sets the vehicle-mounted device ID included in the resource request as a vehicle-mounted device located in the designated area from the non-designated area. The management is switched and a resource allocation response is transmitted to the in-vehicle device (step S203).

  Further, for example, when the message type is a link disconnection request (step S201, link disconnection request), the base station apparatus 100 is located in the non-designated area or the designated area with the vehicle-mounted device ID included in the link disconnection request. The link disconnection response is transmitted to the in-vehicle device by being excluded from the management as the in-vehicle device (step S204).

  Further, for example, when the message type is probe information (step S201, probe information), the base station apparatus 100 determines whether or not the management of the vehicle-mounted device ID included in the probe information is the latest coverage area. If it is determined that the area is not the latest area, the information is updated, and the probe information is transmitted to the server (step S205). In addition, when a located area is updated, the resource applicable to the said located area is allocated.

[Communication resource control processing]
Next, the flow of communication resource control processing according to the first embodiment will be described with reference to FIG. FIG. 12 is a flowchart illustrating the flow of the communication resource control process according to the first embodiment.

  For example, as illustrated in FIG. 12, when there is an unallocated resource (Yes in Step S301), the base station device 100 determines whether the attach time at the head of the queue has exceeded the transmission interval (Step S302). ). Here, the unallocated resource is whether there is a vehicle in a resource allocation waiting state that appears when the number of vehicles to which resources are allocated is larger than the allocated resource amount. In the designated area, in order to allocate a sufficient amount of resources, there are almost no unallocated resources.

  Also, for example, when the frame transmission interval is 5 msec and the vehicle is not congested, even if resources are allocated at intervals of 5 msec, the moving distance of the vehicle is very short and the probe information changes less. Therefore, it is preferable to allocate resources at a transmission interval that is somewhat long, such as once every 100 msec, and whether or not the transmission interval is exceeded is determined by whether or not a time longer than the minimum transmission interval of probe information has passed. It is processing.

  Then, when the attach time at the head of the queue shown in FIG. 13 exceeds the transmission interval (Yes at Step S302), the base station device 100 detaches the vehicle unit ID from the head of the queue (Step S303). Subsequently, the base station apparatus 100 generates resource allocation information and allocates uplink communication resources for transmitting probe information to the in-vehicle device (step S304).

  Thereafter, the base station apparatus 100 attaches the ID of the vehicle-mounted device to which the resource is allocated to the tail of the queue illustrated in FIG. 13 and assigns time information to which the resource is allocated (step S305). Further, when there is no unallocated resource (No at Step S301), or when the transmission interval is less than the minimum transmission interval of the probe information (No at Step S302), the base station device 100 completes the resource allocation in the frame. Then, the generated resource allocation information is transmitted to the in-vehicle device (step S306). FIG. 13 is a diagram illustrating an image of a cue to be attached and detached.

[Processing in vehicle-mounted device according to Embodiment 1]
Next, the flow of processing in the in-vehicle device according to the first embodiment will be described with reference to FIG. FIG. 14 is a flowchart illustrating a process flow in the vehicle-mounted device according to the first embodiment.

  As shown in FIG. 14, for example, when the in-vehicle device enters the communication area (road vehicle area) of the base station device 100 (Yes in step S401), the in-vehicle device transmits a link establishment request to the base station device 100 ( Step S402). Then, the in-vehicle device determines whether or not the own vehicle has entered a new designated area based on the geographical information included in the designated area information and the own vehicle position information obtained by positioning using a GPS satellite or the like. (Step S403).

  Subsequently, when the vehicle-mounted device enters a new designated area (Yes at Step S403), the vehicle-mounted device transmits a resource request to the base station apparatus 100 using the random access resource (Step S404). Thereafter, the in-vehicle device receives a resource allocation message from the base station device 100 (step S405), generates probe information, and transmits the generated probe information to the base station device 100 (step S406).

  When the in-vehicle device becomes difficult to receive a signal from the base station device 100 or leaves the communication area of the base station device 100 according to geographical information or the like (Yes in step S407), the base station device 100 A link disconnection request is transmitted to (step S408). Note that when the vehicle-mounted device is within the communication area of the base station device 100 (No at Step S407), the vehicle-mounted device executes the process at Step S403.

  In addition, when the own vehicle has not entered a new designated area (No in step S403), the vehicle-mounted device is located in a non-designated area or is already located in a designated area. Since the resource request has been transmitted to the base station apparatus 100 in step S404 when entering the designated area, the system waits for resources to be allocated from the base station apparatus 100 (step S409). When the resource is allocated (Yes at Step S409), the vehicle-mounted device performs the process at Step S406. When the resource is not allocated (No at Step S409), the vehicle-mounted device performs Step S403 as confirmation of the located area.

[Effects of Example 1]
As described above, when the current position of the vehicle-mounted device is a designated area where the probe information is to be collected intensively, the base station device 100 allocates a designated area resource that is a sufficiently large number of resources at a short transmission interval, When it is a non-designated area, non-designated area resources other than the designated area resources are allocated at a long transmission interval according to the number of vehicles, so that probe information can be efficiently collected.

  In the first embodiment, the case where the base station apparatus allocates resources has been described. However, the present invention is not limited to this, and the vehicle-mounted device can also select resources. The second embodiment is suitable for a wireless communication method such as a wireless local area network (LAN) that does not require resource allocation by the base station device.

  Therefore, in the following second embodiment, a case where the in-vehicle device selects a resource will be described with reference to FIGS.

[Configuration of in-vehicle device]
First, the configuration of the vehicle-mounted device according to the second embodiment will be described with reference to FIG. FIG. 15 is a diagram illustrating a configuration example of the vehicle-mounted device according to the second embodiment.

  As illustrated in FIG. 15, the in-vehicle device 150 includes a control unit 160 and transmits probe information according to, for example, resources to be used. Specifically, whether the in-vehicle device 150 is within the area where the current position of the in-vehicle apparatus 150 is within a predetermined area based on area information notified from the base station apparatus capable of wireless communication. Determine whether or not. Then, when it is determined that the vehicle-mounted device 150 is within the area, the in-vehicle device 150 is based on the time zone group information in the area notified from the base station apparatus, and is included in the first radio band used by the base station apparatus. The time zone is selected as the radio time region used by the own device at the first time interval. Further, when it is determined that the vehicle-mounted device 150 is not within the area, the in-vehicle device 150 is based on the time zone group information outside the area notified from the base station apparatus, and is included in the first radio band used by the base station apparatus. A second time zone, which is a time zone other than the time zone, is selected as a radio time region used by the own device at a second time interval longer than the first time interval.

  The control unit 160 has an internal memory for storing a control program, a program defining various processing procedures, and necessary data, and in particular, a reception unit 161, a transmission unit 162, a positioning processing unit 163, an area It has the control part 164 and the message process part 165, and performs various processes by these.

  For example, the reception unit 161 receives a signal transmitted from the base station apparatus and notifies the message processing unit 165 of the signal. Also, the transmission unit 162 transmits signals such as various messages notified from the message processing unit 165 to the base station apparatus. In addition, for example, the positioning processing unit 163 measures the position of the host vehicle using a signal from a GPS satellite or the like.

  For example, the area control unit 164 manages geographical information of the designated area. Further, for example, when the in-vehicle device 150 autonomously selects a resource for transmitting probe information, the area control unit 164 transmits the transmission cycle of the designated area and the non-designated area received from the base station apparatus, and the available resources. Manage group information.

  In addition, the area control unit 164, for example, based on the geographical information held by the area control unit 164 and the position information of the own vehicle measured by the positioning processing unit 163, the host vehicle is present in the designated area. It is determined whether or not to make a range. In the second embodiment, unlike the first embodiment, resource allocation by the base station apparatus is not performed, and therefore it is not always necessary to set the area flag.

  For example, the message processing unit 165 generates various messages to be transmitted to the base station apparatus and processes various messages transmitted from the base station apparatus. Specifically, the message processing unit 165 generates a link establishment request or link disconnection request message when establishing or disconnecting a link with the base station apparatus. Further, the message processing unit 165 processes messages of a link establishment response and a link disconnection response that are responses to the link establishment request and the link disconnection request.

  In addition, the message processing unit 165 generates probe information and requests the transmission unit 162 to transmit it. The probe information includes, for example, the own vehicle position (latitude, longitude, altitude, etc.), vehicle speed, acceleration / deceleration, moving direction, and operating states of various in-vehicle devices (not shown) (wiper and turn signal) measured by the positioning processing unit 163. Etc.), etc., etc.) and are connected to various in-vehicle devices.

  Further, the message processing unit 165 selects a resource from the probe information transmission resource group based on the transmission cycle, resource group information, and the like managed by the area control unit 164.

[Resource selection process]
Next, the flow of resource selection processing according to the second embodiment will be described with reference to FIG. FIG. 16 is a flowchart illustrating the flow of the resource selection process according to the second embodiment.

  For example, as shown in FIG. 16, the in-vehicle device 150 continuously receives a signal from a GPS satellite or the like, and measures the position of the host vehicle (step S501). In addition, the base station device continuously transmits a signal including the designated area information to vehicles located in the communication area of the base station device (step S502). The geographical information indicating the designated area is determined in advance by a system operator or the like.

  In addition, as shown in FIG. 17, the designated area information includes a resource group “t0 to tn” that can be used by vehicles in the designated area and the non-designated area, a probe information transmission period “p0 to pn”, and the like. It is out. In FIG. 17, the non-designated area is area ID “0”, the designated area is area ID “1” to area ID “n”, and the vehicle-mounted device 150 is within the time allotted to the area where the vehicle is located. , Send probe information autonomously. In addition, the arrows in FIG. 17 indicate a state in which probe information is transmitted (transmission cycle is “p0”) at times “t0” to “t1” when the in-vehicle device group located in the non-designated area is allocated. FIG. 17 is a diagram illustrating an example of designated area information according to the second embodiment.

  Moreover, the vehicle equipment 150 transmits the link establishment request | requirement containing vehicle equipment ID with respect to a base station apparatus (step S503). When the base station device recognizes that the in-vehicle device 150 has newly entered the communication area of the base station device, the base station device transmits a link establishment response including the in-vehicle device ID of the in-vehicle device 150 to the in-vehicle device 150 ( Step S504).

  Further, when the in-vehicle device 150 recognizes that the own vehicle is located in the non-designated area based on the location information of the own vehicle and the geographical information of the designated area notified from the base station device, A resource for transmitting probe information is selected from the non-designated area resource group notified from the station apparatus, and the probe information is transmitted to the base station apparatus using the selected resource (step S505). Further, the base station apparatus transmits the probe information received from the in-vehicle device 150 to the server (step S506). Note that while the vehicle-mounted device 150 is in the non-designated area, the probe information is transmitted every time the probe information transmission cycle for the non-designated area notified from the base station apparatus elapses.

  Next, when the in-vehicle device 150 recognizes that the own vehicle is located in the designated area based on the location information of the own vehicle and the geographical information of the designated area notified from the base station device, A resource for transmitting probe information is selected from the designated area resource group notified from the station apparatus, and the probe information is transmitted to the base station apparatus using the selected resource (step S507). Further, the base station apparatus transmits the probe information received from the in-vehicle device 150 to the server (step S508). Note that while the vehicle-mounted device 150 is in the designated area, the probe information is transmitted every time the probe information transmission cycle for the designated area notified from the base station apparatus elapses.

  Next, when the in-vehicle device 150 recognizes that the own vehicle is located in the non-designated area based on the location information of the own vehicle and the geographical information of the designated area notified from the base station device, A resource for transmitting probe information is selected from the resource group for non-designated areas notified from the base station apparatus, and the probe information is transmitted to the base station apparatus using the selected resource (step S509). Further, the base station device transmits the probe information received from the in-vehicle device 150 to the server (step S510).

  Next, the in-vehicle device 150 releases the link when the own vehicle leaves the communication area of the base station device based on the location information of the own vehicle and the geographical information of the designated area notified from the base station device. A request (link disconnection request) is transmitted to the base station apparatus (step S511). When the base station apparatus receives a link disconnection request from the in-vehicle device 150, the base station apparatus excludes the in-vehicle device ID of the in-vehicle device 150 from the resource allocation target and sends a link release response (link disconnection response) to the in-vehicle device 150. Transmit (step S512).

[Processing in vehicle-mounted device according to Embodiment 2]
Next, the flow of processing in the vehicle-mounted device 150 according to the second embodiment will be described with reference to FIG. FIG. 18 is a flowchart illustrating a process flow in the vehicle-mounted device 150 according to the second embodiment.

  For example, as illustrated in FIG. 18, when the vehicle-mounted device 150 can correctly receive a signal from the base station device and enters the communication area (road vehicle area) of the base station device (Yes in step S601), A link establishment process is performed to establish a link with the base station apparatus (step S602).

  Then, the in-vehicle device 150 determines whether or not the own vehicle is located in the designated area based on the geographical information of the designated area information and the position information of the measured own vehicle (step S603). Subsequently, in-vehicle device 150 selects a resource to be used for transmitting probe information from the specified area resource group notified from the base station device when the host vehicle is in the specified area (Yes in step S603). (Step S604).

  Thereafter, the in-vehicle device 150 transmits the probe information to the base station apparatus using the selected resource (step S605). And when the vehicle equipment 150 becomes difficult to receive the signal from a base station apparatus or leaves | separates from the communication area of a base station apparatus according to geographical information etc. (step S606 affirmation), with respect to the said base station apparatus The link disconnection request is transmitted (step S607). In-vehicle device 150 executes the process of step S603 when located in the communication area of the base station device (No in step S606).

  Further, when the vehicle is located in a non-designated area (No at step S603), the vehicle-mounted device 150 uses resources for transmitting probe information from the non-designated area resource group notified from the base station device. Is selected (step S608).

  In this embodiment, the in-vehicle device and the base station device perform the link establishment (or disconnection) procedure. However, the in-vehicle device broadcasts the probe information and causes the base station device to receive the probe information. By doing so, the procedure for establishing (or disconnecting) the link may be omitted.

[Effects of Example 2]
As described above, when the current position of the in-vehicle device 150 is a designated area for which probe information is to be collected intensively, the in-vehicle device 150 selects the resource for the designated area notified from the base station device and does not designate it. When the area is an area, the resource for the non-designated area notified from the base station apparatus is selected and the probe information is transmitted, so that the probe information can be efficiently collected.

Although the embodiments of the present invention have been described so far, the present invention may be implemented in various different forms other than the embodiments described above. Therefore, different embodiments in (1) frame configuration, (2) configuration of base station apparatus and in-vehicle device, (3) time zone allocation program, and (4) time zone selection program will be described.

(1) Frame configuration In the first embodiment and the second embodiment, the case where the information source of probe information is a vehicle (on-vehicle device) in general has been described. However, the present invention is not limited to this and is a special vehicle. It can also be implemented.

  When collecting probe information of special vehicles, for example, resources are allocated at a predetermined time interval regardless of whether or not the vehicle is in the designated area. Specifically, when the link establishment request between the base station device and the vehicle (on-vehicle device) is requested, the on-vehicle device type information on the general vehicle and the special vehicle (emergency vehicle, public transportation vehicle, etc.) is set, so that the base Allows in-vehicle device management for each vehicle type in the station device. As shown in FIG. 19, for example, as shown in FIG. 19, an uplink resource is secured in advance for a special vehicle (specific vehicle), and the resource is allocated from the base station device or the resource is selected by the special vehicle itself. It is realized by doing. FIG. 19 is a diagram for explaining an example of a data structure of a frame according to the third embodiment.

  Further, as shown in FIG. 19, the non-designated area may be divided into a plurality of small areas, and the resources allocated to the non-designated area may be divided by the small areas. In this case, resource allocation is performed for each small area. In addition, the application of the division to the small area may be changed according to the date and time determined by the system operator or the like, or may be dynamically changed according to the observed traffic situation.

(2) Configuration of base station apparatus and in-vehicle device Also, information including processing procedure, control procedure, specific name, various data and parameters shown in the above documents and drawings (for example, “designated area”) And the specific name of the “non-designated area” can be arbitrarily changed unless otherwise specified.

  Further, each component of each illustrated apparatus is functionally conceptual and does not necessarily need to be physically configured as illustrated. That is, the specific form of distribution / integration of each device is not limited to that shown in the figure. For example, the reception unit 111 and the transmission unit 112, and similarly, the reception unit 161 and the transmission unit 162 transmit and receive various messages and the like. All or a part of them can be functionally or physically distributed / integrated in arbitrary units according to various burdens or usage conditions, such as integration as a “transmission / reception unit”. Further, all or a part of each processing function performed in each device may be realized by a CPU and a program that is analyzed and executed by the CPU, or may be realized as hardware by wired logic.

(3) Time Zone Allocation Program By the way, in the first embodiment, the case where various processes are realized by hardware logic has been described. However, the present invention is not limited to this, and a program prepared in advance is stored in a computer. You may make it implement | achieve by performing by. Therefore, in the following, an example of a computer that executes a time zone allocation program having the same function as that of the base station apparatus 100 described in the above embodiment will be described with reference to FIG. FIG. 20 is a diagram illustrating a computer that executes a time slot allocation program.

  As shown in FIG. 20, the computer 11 as a base station apparatus includes an HDD 13, a CPU 14, a ROM 15, a RAM 16, and the like that are connected by a bus 18.

  The ROM 15 has a time zone allocation program that exhibits the same function as that of the base station apparatus 100 shown in the first embodiment, that is, as shown in FIG. 20, an area determination program 15a and a first time zone allocation program 15b. And a second time zone allocation program 15c are stored in advance. Note that these programs 15a to 15c may be integrated or distributed as appropriate, similarly to each component of the base station apparatus 100 shown in FIG.

  Then, when the CPU 14 reads out these programs 15a to 15c from the ROM 15 and executes them, as shown in FIG. 20, the programs 15a to 15c have an area determination process 14a, a first time zone allocation process 14b, The second time zone allocation process 14c functions. The process 14a to the process 14c include the message processing unit 113, the area control unit 114, the in-designated in-vehicle device control unit 115, the in-non-designated in-vehicle device control unit 116, and the communication resources illustrated in FIG. This corresponds to the control unit 117.

  Then, the CPU 14 executes a time zone allocation program based on the data recorded in the RAM 16.

  Note that the programs 15a to 15c are not necessarily stored in the ROM 15 from the beginning. For example, a flexible disk (FD), a CD-ROM, a DVD disk, a magneto-optical disk, It is connected to the computer 11 via a “portable physical medium” such as an IC card, or a “fixed physical medium” such as an HDD provided inside or outside the computer 11, and further via a public line, the Internet, a LAN, a WAN, etc. Each program may be stored in “another computer (or server)” or the like, and the computer 11 may read and execute each program from now on.

(4) Time Zone Selection Program In the second embodiment, the case where various processes are realized by hardware logic has been described. However, the present invention is not limited to this, and a program prepared in advance is used as a computer. You may make it implement | achieve by performing by. Therefore, in the following, an example of a computer that executes a time zone selection program having the same function as the in-vehicle device 150 shown in the above embodiment will be described with reference to FIG. FIG. 21 is a diagram illustrating a computer that executes a time zone selection program.

  As shown in FIG. 21, the computer 22 as the in-vehicle device has an HDD 23, a CPU 24, a ROM 25, a RAM 26, and the like connected by a bus 28.

  In the ROM 25, a time zone selection program that exhibits the same function as the vehicle-mounted device 150 shown in the second embodiment, that is, as shown in FIG. 21, an area determination program 25a, a first time zone selection program 25b, and The second time zone selection program 25c is stored in advance. Note that these programs 25a to 25c may be integrated or distributed as appropriate, like the components of the in-vehicle device 150 shown in FIG.

  Then, the CPU 24 reads out these programs 25a to 25c from the ROM 25 and executes them, so that as shown in FIG. 21, the programs 25a to 25c are an area determination process 24a, a first time zone selection process 24b, The second time zone selection process 24c functions. The processes 24a to 24c correspond to the positioning processing unit 163, the area control unit 164, and the message processing unit 165 shown in FIG.

  Then, the CPU 24 executes a time zone selection program based on the data recorded in the RAM 26.

  The programs 25a to 25c are not necessarily stored in the ROM 25 from the beginning. For example, a flexible disk (FD), a CD-ROM, a DVD disk, a magneto-optical disk, It is connected to the computer 22 via a “portable physical medium” such as an IC card, or a “fixed physical medium” such as an HDD provided inside or outside the computer 22, and further via a public line, the Internet, a LAN, a WAN, etc. Each program may be stored in “another computer (or server)” or the like, and the computer 22 may read and execute each program from now on.

  The following additional notes are further disclosed with respect to the embodiments including the first to third embodiments.

(Appendix 1) Area determination means for determining whether or not the current position of the radio station apparatus is within a predetermined area based on current position information notified from a radio station apparatus capable of radio communication;
A radio time area used by the radio station apparatus at a first time interval for a first time zone included in a radio band used by the own apparatus when the area determination unit determines that the area is within the area. A first time zone assignment means to assign to
If it is determined by the area determination means that the area is not within the area, a second time zone that is a time zone other than the first time zone included in the radio zone used by the own device is A second time zone allocating means for allocating to a radio time region used by the radio station device at a second time interval longer than the first time interval according to the number;
A base station apparatus comprising:

(Additional remark 2) When the said area determination means is notified of the time slot | zone allocation request | requirement from the said radio station apparatus, based on the present position information notified from the said radio station apparatus, the present position of the said radio station apparatus previously The base station apparatus according to Supplementary Note 1, wherein it is determined whether or not the area is within a predetermined area.

(Additional remark 3) When the said radio station apparatus is a predetermined specific apparatus, it has further the time slot | zone priority allocation means to allocate the time slot | zone which can be used preferentially with respect to the said radio station apparatus, It is characterized by the above-mentioned. The base station apparatus according to appendix 1.

(Supplementary note 4) Any one of Supplementary notes 1 to 3, further comprising: a link disconnection response transmission unit configured to transmit a link disconnection response to the link disconnection request when a link disconnection request is received from the wireless station device. The base station apparatus as described in one.

(Additional remark 5) The area | region which determines whether the present position of an own apparatus is in the predetermined area | region based on the area | region information where the predetermined area | region notified from the base station apparatus in which radio | wireless communication is possible A determination means;
When it is determined by the area determination means that the area is within the area, based on the time zone group information in the area notified from the base station apparatus, the radio band used by the base station apparatus includes A first time zone selecting means for selecting one time zone as a radio time region used by the own device at a first time interval;
When it is determined by the area determination means that it is not within the area, based on the time zone group information outside the area notified from the base station apparatus, the radio station included in the radio band used by the base station apparatus Second time zone selection for selecting a second time zone, which is a time zone other than the first time zone, as a radio time region used by the own device at a second time interval longer than the first time interval. Means,
A radio station apparatus comprising:

(Supplementary note 6) The radio station apparatus according to supplementary note 5, wherein the area determination unit continuously determines whether or not the current position of the own apparatus is within the area.

(Supplementary note 7) The radio station apparatus according to supplementary note 5, further comprising time zone priority selection means for preferentially selecting a time zone that can be used when the own device is a predetermined specific device. .

(Additional remark 8) It further has a link cutting | disconnection request | requirement transmission means which transmits a link cutting | disconnection request | requirement with respect to the said base station apparatus, when an own apparatus remove | deviates from the communication area | region of the said base station apparatus including the inside and the outside of the area | region. The radio station apparatus according to any one of appendix 5 to appendix 7, characterized by:

(Supplementary note 9) A region determination procedure for determining whether or not the current position of the wireless station device is within a predetermined region based on current position information notified from a wireless station device capable of wireless communication;
A radio time region used by the radio station device at a first time interval in a first time zone included in a radio band used by the device when it is determined by the region determination procedure to be within the region. A first time zone assignment procedure to assign to
If it is determined by the region determination procedure that the wireless station device is not within the region, a second time zone that is a time zone other than the first time zone included in the wireless zone used by the own device is A second time zone allocation procedure for allocating to a radio time region used by the radio station device at a second time interval longer than the first time interval according to the number;
A time zone allocation program which causes a computer to execute

(Supplementary Note 10) An area determination step for determining whether or not the current position of the wireless station apparatus is within a predetermined area based on current position information notified from a wireless station apparatus capable of wireless communication;
A radio time region used by the radio station device at a first time interval in a first time zone included in a radio band used by the own device when it is determined by the region determination step that it is within the region. A first time zone assignment process assigned to
When it is determined that the area is not within the area by the area determination step, a second time zone that is a time zone other than the first time zone included in the radio zone used by the own device is determined by the radio station device. A second time zone allocating step of allocating to a radio time region used by the radio station device at a second time interval longer than the first time interval according to a number;
A time zone allocating method characterized by comprising:

(Additional remark 11) Area | region which determines whether the present position of an own apparatus is in the predetermined area | region based on the area | region information in which the area | region notified from the base station apparatus in which radio | wireless communication is possible is defined Judgment procedure;
When it is determined by the region determination procedure that it is within the region, the base station device includes a radio band used by the base station device based on time zone group information in the region notified from the base station device. A first time zone selection procedure for selecting one time zone as a radio time domain used by the device at a first time interval;
When it is determined by the region determination procedure that it is not within the region, based on time zone group information outside the region notified from the base station device, the base station device includes the radio band used by the base station device Second time zone selection for selecting a second time zone, which is a time zone other than the first time zone, as a radio time region used by the own device at a second time interval longer than the first time interval. Procedure and
A time zone selection program characterized by causing a computer to execute.

(Additional remark 12) Area | region which determines whether the present position of an own apparatus is in the predetermined area | region based on the area | region information where the predetermined area | region notified from the base station apparatus in which radio | wireless communication is possible A determination process;
When it is determined by the region determination step that the region is within the region, the base station device includes a radio band used by the base station device based on time zone group information in the region notified from the base station device. A first time zone selection step of selecting one time zone as a radio time domain used by the device at a first time interval;
When it is determined by the region determination step that the region is not within the region, based on time zone group information outside the region notified from the base station device, the base station device includes the wireless band used by the base station device Second time zone selection for selecting a second time zone, which is a time zone other than the first time zone, as a radio time region used by the own device at a second time interval longer than the first time interval. Process,
A method for selecting a time zone, comprising:

DESCRIPTION OF SYMBOLS 100 Base station apparatus 110 Control part 111 Reception part 112 Transmission part 113 Message processing part 114 Area control part 115 In-vehicle equipment control part in designated area 116 In-vehicle equipment control part in non-designated area 117 Communication resource control part 150 In-vehicle equipment 160 Control part 161 Reception unit 162 Transmission unit 163 Positioning processing unit 164 Area control unit 165 Message processing unit

Claims (6)

Area determining means for determining whether or not the current position of the radio station apparatus is within a predetermined area based on current position information notified from a radio station apparatus capable of radio communication;
A radio time area used by the radio station apparatus at a first time interval for a first time zone included in a radio band used by the own apparatus when the area determination unit determines that the area is within the area. A first time zone assignment means to assign to
If it is determined by the area determination means that the area is not within the area, a second time zone that is a time zone other than the first time zone included in the radio zone used by the own device is A second time zone allocating means for allocating to a radio time region used by the radio station device at a second time interval longer than the first time interval according to the number;
A base station apparatus comprising:   The area determination unit is configured to determine a current position of the radio station apparatus based on current position information notified from the radio station apparatus when a time zone allocation request is notified from the radio station apparatus. The base station apparatus according to claim 1, wherein it is determined whether or not it is within a region.   2. A time zone priority assigning unit for preferentially assigning a usable time zone to the radio station device when the radio station device is a predetermined specific device. The base station apparatus as described in. Area determining means for determining whether or not the current position of the own apparatus is within a predetermined area based on area information in which the area is notified from a base station apparatus capable of wireless communication;
When it is determined by the area determination means that the area is within the area, based on the time zone group information in the area notified from the base station apparatus, the radio band used by the base station apparatus includes A first time zone selecting means for selecting one time zone as a radio time region used by the own device at a first time interval;
When it is determined by the area determination means that it is not within the area, based on the time zone group information outside the area notified from the base station apparatus, the radio station included in the radio band used by the base station apparatus Second time zone selection for selecting a second time zone, which is a time zone other than the first time zone, as a radio time region used by the own device at a second time interval longer than the first time interval. Means,
A radio station apparatus comprising:   The radio station apparatus according to claim 4, wherein the area determination unit continuously determines whether or not the current position of the own apparatus is within the area.   5. The radio station apparatus according to claim 4, further comprising a time zone priority selection unit that preferentially selects a time zone that can be used when the own device is a predetermined specific device.

Images