JP5821573B2 - Radio and computer program - Google Patents

Description

  The present invention relates to a radio apparatus employing digital voice communication, and a computer program for realizing the functions of the radio apparatus.

  In recent years, for example, in the world of amateur radio, digitization and networking of voice communication are becoming widespread in order to realize higher-speed communication and enjoy communication with clear voice (see, for example, Patent Document 1). . In amateur radio digital voice communication, a voice signal is encoded, converted into a digital signal, packetized, and transmitted.

  Hereinafter, an amateur radio system employing digital voice communication will be briefly described with reference to FIG.

  In the amateur radio system 100 shown in FIG. 7, repeaters 3a and 3b are installed for each of service areas (hereinafter simply referred to as “areas”) 2a and 2b covering a plurality of radio devices 1a to 1e. In the example of FIG. 7, the radio devices 1a, 1b, and 1c exist in the area 2a covered by the repeater 3a, and the radio devices 1d and 1e exist in the area 2b covered by the repeater 3b.

  Between adjacent repeaters 3a and 3b, voice and data are multiplexed using a microwave and transmitted. The area connected by the repeaters 3a and 3b is called zone 5. A plurality of zones 5 (5a, 5b, 5c) are connected by the Internet 6 via the gateway 4. In the following description, the wireless devices 1a to 1e are collectively referred to as the wireless device 1. Similarly, the areas 2a, 2b, etc. are collectively referred to as the area 2, the repeaters 3a, 3b, etc. are collectively referred to as the repeater 3, and the zones 5a, 5b, 5c are also collectively referred to as the zone 5.

  In the above-described amateur radio system 100, many voice audio signals have been packetized, and data indicating the transmission destination, the call sign of the transmission source, and the like are added to the header of the packet. The function of can be realized.

For example, by using the amateur radio system 100 of FIG. 7, various forms of communication as described below can be realized.
(1) Direct communication between the radios 1 in each area 2 (2) Communication via the repeater 3 between the radios 1 in each area 2 (3) Radio in different areas 2 in the same zone 5 Communication between repeaters 3 between devices 1 (4) Communication between gateways 4 between the wireless devices 1 in different zones 5 and the Internet 6

  On the other hand, in the amateur radio system employing the above-described digital voice communication, when communication is started, it is necessary to specify the call sign of the destination and the source repeater together with the call sign of the destination and the source.

  Therefore, when a wireless device is mounted on a moving body such as an automobile, the area to which the wireless device belongs is changed as the vehicle moves, so it is necessary to change the call sign of the sending repeater each time communication is performed. Regarding areas that move on a daily basis, it is known from experience which repeaters can communicate, and it is easy to select a repeater that can communicate during communication and set a call sign.

  However, when communicating at a place visited for the first time on a trip or business trip, it is difficult to easily know which repeaters can communicate at that place. For this reason, it is necessary to bring a comparison table between the address and the call sign of the area, or to check the call sign of the repeater at the place in advance using an Internet search tool or the like, which places a heavy burden on the user.

  As a method for automatically acquiring a call sign of a communicable repeater without imposing a burden on the user, it is conceivable to adopt a method proposed in a mobile phone system. That is, the location information and identification information (ID) of the base station (equivalent to a repeater) is stored in advance in the memory, and the closest base station is selected based on the information indicating the current location of the mobile phone acquired by the GPS receiver. This is a method of reading the identification information of the base station from the memory (see, for example, Patent Document 2).

JP 2010-193315 A JP 2002-165253 A

  In the above method, if the call sign of the repeater is stored in the memory instead of the identification information of the base station, the call sign of the communicable repeater can be automatically acquired. However, unlike a cellular phone system that employs a small zone cell system, in an amateur radio system, the size of an area differs for each repeater, and a plurality of areas may be set in an overlapping manner. Therefore, the method proposed in the mobile phone system cannot be applied as it is.

  The present invention has been made in view of such circumstances, and an object of the present invention is to provide a radio apparatus suitable for a digital amateur radio system capable of automatically acquiring a call sign of a communicable repeater.

To achieve the above object, a radio apparatus according to the present invention converts an analog audio signal into A / D conversion and encoding to a digital audio signal, generates a packet including the digital audio signal, and converts the packet into a radio signal. A wireless device that converts and transmits to
As the packet, the header portion includes an identifier for identifying a transmission destination and a transmission source wireless device, and identifier data for identifying a repeater in an area to which the wireless devices belong, and the data portion includes the data of the digital audio signal. A transmitter that generates the included packets;
A controller for notifying the transmitter of the data of each identifier;
Memory storing a table including position information of the repeaters installed at a plurality of locations, information indicating a service area, information whether or not a user desires connection to the repeaters, and identifier data;
A position information acquisition device that acquires information indicating the position of the transmitter radio,
Prior to transmission, the controller
The information indicating the current position of the transmission source radio obtained from the position information acquisition device is compared with the position information of the repeater included in the table, and data of a plurality of repeaters close to the radio is obtained from the table. If the table contains information indicating that connection to the repeater is not desired , create a list excluding the repeater ,
Comparing the information indicating the current position of the wireless device and the information indicating the service area of the list, and selecting one repeater from a plurality of repeaters in which the current position of the wireless device is included in the service area;
And notifying the transmitting unit as an identifier of the signal source repeater sending an identifier of the selected repeater.

The wireless device according to the present invention further includes a receiving unit that demodulates the received wireless signal and extracts the packet,
In addition, the table and the list include uplink and downlink frequency data of the repeater,
Preferably, the controller reads an uplink frequency of the selected repeater from the list and notifies the transmitter of the selected frequency, and reads a downlink frequency and notifies the receiver of the frequency.

  A priority order is set for the repeaters included in the list, and the controller preferably selects a repeater having a higher priority order when selecting one repeater from the list. As a method of assigning priorities, the size of the extracted repeater area or the distance from the wireless device to the repeater may be used as a parameter. The service area is preferably set as a rectangle surrounded by lines indicating latitude and longitude, and includes the position where the repeater is installed in the rectangle.

  A GPS receiver is preferably used as the position information acquisition device. It is preferable to use a non-volatile memory as a memory for storing the table.

The computer program according to the present invention, the computer includes an identifier for identifying the signal destination and transmit the original radio transmission in the header portion, and a data identifier for identifying the repeater area that these radios belongs, data A computer program that causes a transmission unit that generates a packet including a digital audio signal in which an analog audio signal is A / D converted and encoded in the unit to function as a controller that notifies the data of each identifier ,
The controller is
Information indicating the current position of the transmission source radio obtained from the position information acquisition unit that acquires information indicating a position before the SL source radio, the location information of the repeater installed at a plurality of locations, service areas Information indicating whether or not the user wishes to connect to the repeater and the position information of the repeater included in a table including identifier data, and data of a plurality of repeaters close to the radio If it is extracted from the table and the table contains information indicating that the connection to the repeater is not desired, a list excluding the repeater is created,
Comparing the information indicating the current position of the wireless device and the information indicating the service area of the list, and selecting one repeater from a plurality of repeaters in which the current position of the wireless device is included in the service area;
And notifying the transmitting unit as an identifier of the signal source repeater sending an identifier of the selected repeater.

In the wireless device according to the present invention, a table including repeater position information, area information, call sign, and frequency is stored in the memory in advance, and the current position of the wireless device acquired by the position information acquisition device is determined as the repeater position. By comparing with the information and the information of the area, all the repeaters except the one that the wireless device is included in the area and the user does not want to connect to are extracted, and the repeater to communicate is selected from among them.

  As a result, according to the wireless device of the present invention, the call sign of a repeater that can be communicated can be automatically acquired without performing complicated operations by the user.

It is a block diagram which shows the structure of the radio | wireless machine concerning embodiment of this invention. It is a figure which shows the structure of the packet transmitted with a radio | wireless machine. It is a conceptual diagram which shows the state which the radio | wireless machine mounted in the motor vehicle passes through a some area. It is a figure which shows an example of the table (a) stored in memory, and the list | wrist (b) created based on this table. It is a figure which shows the positional information on the receiver displayed on the screen of a display part. It is a flowchart explaining the procedure at the time of selecting a repeater from the table stored in memory. It is a figure which shows the structure of the amateur radio | wireless system which employ | adopted the digital voice communication.

  Hereinafter, a wireless device according to an embodiment of the present invention will be described with reference to the drawings.

<Configuration of radio>
FIG. 1 shows a configuration of a wireless device according to the present embodiment that employs digital voice communication. The wireless device 1 includes a microphone 11, a speaker 12, an AF amplifier 13, an audio codec 14, a transmission unit 15, a transmission / reception switching unit 16, an antenna 17, a reception unit 18, an interface unit 19, a controller 21, an operation unit 26, and a display unit 28. It is configured. In the figure, thick arrows indicate the flow of audio signals and data, and thin arrows indicate the flow of signals in the control system.

  The microphone 11 receives the sound for transmission as an input, generates an analog sound signal, and outputs the sound signal to the AF amplifier 13. On the other hand, the speaker 12 converts the analog audio signal output from the AF amplifier 13 into audio.

  The AF (Audio Frequency) amplifier 13 amplifies the analog audio signal input from the microphone 11 and supplies it to the audio codec 14. Further, the analog audio signal of the received audio supplied from the audio codec 14 is amplified and output to the speaker 12.

  The audio codec 14 performs A / D (analog / digital) conversion and encoding on the analog audio signal supplied from the AF amplifier 13 and outputs the result to the transmission unit 15. The audio codec 14 also decodes the digital audio signal supplied from the receiving unit 18, further D / A (digital / analog) converts it, and outputs it to the AF amplifier 13.

  The transmission unit 15 attaches a wireless communication header to the digital audio signal supplied from the audio codec 14 and divides the digital audio signal based on an output of a PTT switch 27 described later to generate a transmission packet. The packet configuration will be described in detail later with reference to FIG. The transmission unit 15 further modulates a carrier wave with digital data constituting the packet, performs frequency conversion as necessary, and transmits the result from the antenna 17 via the transmission / reception switching unit 16.

  The transmission / reception switching unit 16 guides the transmission signal from the transmission unit 15 to the antenna 17 when the PTT switch 27 is pressed and turns on, and guides the reception signal of the antenna 17 to the reception unit 18 when the PTT switch 27 is released and turns off. .

  The receiving unit 18 switches the reception frequency in accordance with the instruction signal from the controller 21, amplifies the reception signal in synchronization with the reception frequency, further demodulates and reproduces the packet. Then, the header part is removed from the reproduced packet, the audio data is supplied to the audio codec 14, and the other data (for example, a packet conforming to Ethernet [registered trademark]) is supplied to the interface unit 19.

  The interface unit 19 is connected to a GPS (Global Positioning System) receiver 29 via an external connection terminal 20 and supplies a packet supplied from the GPS receiver 29 to the controller 21. The interface unit 19 supplies the Ethernet-compliant packet supplied from the receiving unit 18 to an external device (for example, a personal computer) via the external connection terminal 20.

  In the present embodiment, the external GPS receiver 29 is used as the position information acquisition device. However, the GPS unit may be built in the wireless device 1 and the position information may be acquired from the GPS unit. . Further, the position information may be acquired from the link information of the Google map using a personal computer connected to the Internet.

  The controller 21 controls the operation of the wireless device 1. The controller 21 includes a CPU (Central Processing Unit) 22, a ROM (Read Only Memory) 23 that stores a program that defines the operation of the CPU 22, a RAM (Random Access Memory) 24 that functions as a work memory for the CPU 22, and FIG. A non-volatile memory 25 storing a table shown in FIG.

  The operation unit 26 includes a plurality of keys and switches, and transmits various inputs and user instructions to the controller 21. The operation unit 26 includes a PTT (Pres To Talk) switch 27. When the PTT switch 27 is pressed (turned on), the transmission / reception switching unit 16 is switched to the transmission side and transmission is performed from the antenna 17, and when released (turned off), the transmission / reception switching unit 16 is switched to the reception side and received. The audio signal is played back.

  The display unit 28 is composed of a liquid crystal display or the like, and is used to display various data. The screen of the display unit 28 displays that the wireless device 1 has received an amateur radio signal (that there has been a call), the call sign of the transmission source (own station) and the transmission destination (partner station), nickname, etc. The

<Packet configuration>
Next, the configuration of the packet generated by the transmission unit 15 will be described with reference to FIG. The packet configuration indicates how and in which order a series of data of digital voice communication is transmitted together.

  The packet Pa is composed of a header part Ph and a data part Pd. The header part Ph includes a synchronization signal h1, a flag h2, a call sign h3 of a destination repeater, a call sign h4 of a source repeater, a destination call sign h5, and a source call sign h6.

  In the header part Ph, the synchronization signal h1 is a signal indicating that the input signal is synchronized and is a signal. The flag h2 is data representing repeater communication, direct communication, a repeater control signal, and the like, and is composed of data of a plurality of bits.

  The call sign h3 of the destination repeater is, for example, the call sign of the repeater in the area to which the transmission destination radio belongs, and the call sign h4 of the transmission source repeater is the call sign of the repeater in the area to which the transmission source radio belongs. . The destination call sign h5 is the call sign of the radio station of the counterpart station to be transmitted, and the source call sign h6 is the call sign of the radio station of the own station. These call signs (h3 to h6) serve as identifiers for identifying transmission destinations and transmission source radio apparatuses, as well as repeaters that relay radio signals. The destination call sign h5 may be a CQ that calls an unspecified station.

  In the data part Pd, an audio frame d1 including a digitized audio signal and a data frame d2 including data such as a small still image and a memo are alternately arranged, and an end frame d3 indicating the end of the packet is added at the end. Has been.

<Amateur radio communication operation>
Next, an amateur radio communication operation will be described with reference to FIGS. 1 and 2 and FIG. 7 described above. Hereinafter, as a typical case, a case where a station of the radio device 1a in an arbitrary area calls a station of the radio device 1d in a different area will be described.

  Prior to communication, the user operates the operation unit 26 of the wireless device 1a to store information necessary for communication, for example, the call sign of the transmission source (own station) and the transmission repeater in the nonvolatile memory 25. deep.

  At the time of communication, the user operates the operation unit 26 of the wireless device 1a, designates a call sign previously assigned to the wireless device 1d of the transmission destination and a call sign of the transmission destination repeater, and gives an instruction for calling.

  Information input from the operation unit 26 is notified to the transmission unit 15 by the controller 21, and a packet is generated by the transmission unit 15 in accordance with an instruction from the controller 21. As shown in FIG. 2, in the header part Ph of the packet Pa, the call sign h3 of the destination repeater 3b, the call sign h4 of the source repeater 3a, the call sign h5 of the radio 1d as the transmission destination (the partner station), and Each information of the call sign h6 of the wireless device 1a which is the transmission source (own station) is included.

  The packet Pa generated by the transmission unit 15 and converted into a radio signal is transmitted via the transmission / reception switching unit 16 and the antenna 17. The packet Pa transmitted from the wireless device 1a is relayed by the repeaters 3a and 3b on the designated route and reaches the wireless device 1d.

  The wireless signal received by the wireless device 1d is supplied to the receiving unit 18 via the antenna 17 and the transmission / reception switching unit 16, and demodulated by the receiving unit 18 to reproduce the packet Pa. Further, the header part Ph is removed from the packet Pa reproduced by the receiving unit 18 and supplied to the audio codec 14 or the interface unit 19 according to the contents of the data part Pd.

  The audio data supplied to the audio codec 14 is decoded, further converted into an analog audio signal, and supplied to the AF amplifier 13. The audio signal amplified by the AF amplifier 13 is output from the speaker 12 to reproduce the voice of the transmission source user.

  The packet Pa reproduced by the receiving unit 18 is supplied to the controller 21. The CPU 22 of the controller 21 determines whether or not the received packet Pa is a valid packet by ECC (Error Check Code) check or the like.

  The CPU 22 stores the data of the header part Ph of the packet Pa determined to be valid in the RAM 24 and analyzes the information of the header part Ph. The CPU 22 displays the transmission destination call sign and the transmission source call sign of the received packet Pa on the display unit 28 based on the analysis result.

<Repeater call sign acquisition method>
Next, a method for acquiring a call sign of a repeater in an area to which a radio belongs will be described with reference to FIGS.

  First, with reference to FIG. 3, an area which is a premise of the present invention will be described. FIG. 3 shows a state in which a wireless device mounted on the automobile 7 passes through a plurality of areas 2. The automobile 7 is assumed to move from point P to U as indicated by an arrow.

  As shown in FIG. 3, four repeaters 3c to 3f are installed in the displayed area, and for each repeater, the areas 2c to 2f are set as a rectangle surrounded by lines of latitude and longitude. The area that can be covered by one repeater 3 varies greatly depending on the location conditions, and actually has a complicated shape. If this shape is stored in the non-volatile memory 25 as it is, the storage capacity becomes enormous. Therefore, in this embodiment, a square surrounded by a line indicating latitude and longitude with the installation position of the repeater 3 as the center of gravity is shown in the area 2. It is said.

  As a matter of course, each of the areas 2c to 2f is set in a range in which communication with the wireless device 1 can be reliably realized by the repeaters 3c to 3f. When the range in which the radio wave reaches is uneven depending on the topography, the position of the repeater 3 may be shifted from the center of gravity of the area 2. If the storage capacity of the nonvolatile memory 25 permits, the area 2 may be set according to the terrain.

  The size of the areas 2c to 2f varies depending on the location conditions of the repeaters 3d to 3f, and the area becomes large when the area is installed in a high-view place such as the repeater 3c. On the other hand, when it is installed in a place with many obstacles in the city like the repeater 3d, the area becomes small.

  In addition, unlike a mobile phone system, in an amateur radio system, a place that is not covered by an area (before point P in FIG. 3 or after point U) or a place that is covered by a plurality of areas (from point Q in FIG. 3). Between T). As a matter of course, communication via the repeater 2 cannot be performed in a place that is not covered in any area.

  On the other hand, in a place (between points P and Q in FIG. 3) covered by one area (for example, 2c), the call sign of the repeater 3c is set as the call sign of the source repeater in the header part Ph of the packet Pa. Need to be set. In a place (between points Q and R in FIG. 3) covered by two areas (for example, 2c and 2d), the repeater 3c or the repeater 3d has a call sign of the source repeater in the header part Ph of the packet Pa. One of the call signs needs to be set.

  When the user of the wireless device 1 moving in the car 7 does not know the call sign of the repeater 3 in the area 2 to which the user currently belongs, the user can obtain the position information acquired by the GPS receiver 29 and the controller 21. The call sign of the repeater 3 is acquired using the data in the table stored in the nonvolatile memory 25.

  FIG. 4A shows an example of the table T stored in the nonvolatile memory 25. Usually, the table T includes information on repeaters in Japan (if the storage capacity permits, the world). The contents of the table in FIG. 4A correspond to the arrangement of repeaters in FIG.

  The list format table includes seven types of data D1 to D7. The position information D1 is information indicating the position of the place where the repeater 3 is installed, and includes data LAT indicating latitude and data LON indicating longitude. For example, the position information of the first-stage repeater 3c is represented by (LAT1, LON1).

  The range information D2 is information indicating the size of the area 2. As shown in FIG. 3, the area 2 is surrounded by a square whose center of gravity is the installation position of the repeater 2, and the range information D <b> 2 representing the size indicates the length (km) of each side.

  The connection information D3 is information indicating whether or not the user wishes to connect to the repeater 2. Some repeaters, such as those used for emergency, should be avoided if possible. If the user does not wish to connect to such a repeater, the connection information D3 is “impossible”; otherwise, it is “possible”.

  A call sign D4 indicates a call sign assigned to each repeater. Data D5, D6, and D7 are data relating to the frequency when communication is performed between the repeater 3 and the wireless device 1. The transmission / reception frequency of the repeater 3 is set to be shifted so as not to cause interference between adjacent repeaters.

  The data D5 is a downlink frequency, that is, a transmission frequency from the repeater 3 to the wireless device 1. On the other hand, the uplink frequency, that is, the transmission frequency from the wireless device 1 to the repeater 3 is calculated using the data D5, D6, and D7. The offset D7 indicates a difference between the downlink frequency D5 and the uplink frequency, and DUP D6 indicates a direction in which the difference is shifted. When DUP D6 is +, the value of offset D7 is added to the value of frequency D5. When DUP D6 is-, the frequency of uplink is obtained by subtracting the value of offset D7 from the value of frequency D5. .

  On the other hand, the GPS sentence output from the GPS receiver 29 includes information indicating latitude and longitude. FIG. 5 is an example in which information DP indicating the current position of the wireless device 1 acquired by the GPS receiver 29 is displayed on the display unit 28. In the figure, “MY POSITION” indicates the position information of the wireless device 1 as the transmission source, “34 ° 37′000 ″ N” indicates latitude, and “135 ° 36′000 ″ E” indicates longitude. ing.

  The CPU 22 of the controller 21 creates a repeater list using the current position information DP of the wireless device 1 and the repeater position information D1 of the table T shown in FIG.

  Specifically, the CPU 22 compares the position information DP of the wireless device 1 and the latitude and longitude of the position information D1 of the repeater 3 of the table T, and approaches the wireless device 1 from the table T (for example, within 50 km from east, west, south, and north). Repeater data is extracted to create a list L shown in FIG. The created list L is temporarily stored in the RAM 24.

  As described above, the table T corresponds to the arrangement of the repeaters in FIG. 3, and the data of the repeater 3c is posted on the first level of the created list, and the data of the repeater 3d is posted on the second level. ing. When creating the list, repeaters whose connection information D3 of the table T is “impossible” are excluded from extraction targets. The repeater listed in the third row of the table corresponds to the repeater 3e in FIG. 3, and the area 2e is indicated by a broken line in order to distinguish it from other repeaters.

  The list L includes data D8, D4, D5, and D9. Among these, the call sign D4 and the downlink frequency D5 are read from the table T.

Area information D 8 indicates the position of area 2 of repeater 3. For example, the area information D8 in the first stage corresponds to the area 2c in FIG. 3, the data D81 indicates the latitude of the north-south boundary of the square area 2c, and the data D82 indicates the longitude of the east-west boundary of the area 2c. The area information D8 is calculated by the CPU 22 based on the position information D1 and range information D2 of the table T.

  A frequency D9 indicates an uplink frequency of the repeater 3. The frequency D9 is calculated by the CPU 22 based on the data D5, D6, and D7 of the table T.

  The CPU 22 extracts a repeater in which the current position of the wireless device 1 is included in the area 2 from the list L stored in the RAM 24, and further selects a repeater having the highest priority from among the repeaters.

  As a method of assigning priorities, the size of the extracted repeater area or the distance from the wireless device to the repeater is preferably used as a parameter. Which parameter is to be prioritized is determined by input to the operation unit 26 by the user.

  The size of the area of the repeater is determined by the value of the area information D8 listed in the list L. On the other hand, when the priority order is set for the distance from the wireless device to the repeater, the CPU 22 calculates the distance based on the position information DP of the wireless device 1 and the position information D1 of the repeater 3 of the table T, and based on the value. to decide.

  The CPU 22 notifies the transmission unit 15 of the call sign of the repeater selected from the list L in this way, and the transmission unit 15 sets the notified call sign as the call sign of the sending repeater of the header part Ph. Create a packet.

  At the same time, the CPU 22 reads out the uplink and downlink frequencies (D9, D5) of the repeater from the list L, notifies the transmitter 15 of the uplink frequency and notifies the receiver 18 of the downlink frequency. The transmission unit 15 sets the transmission frequency to the notified frequency, and the reception unit 18 sets the reception frequency to the notified frequency.

<Procedure for selecting a repeater in the area to which the radio belongs from Table T>
Prior to communication, the controller 21 extracts the repeater 3 adjacent to the wireless device 1 from the non-volatile memory 25, selects one repeater from the area to which the wireless device 1 belongs, and reads the call sign and communication frequency of the repeater. . A procedure for selecting the repeater 3 in the area to which the wireless device 1 belongs from the table T stored in the nonvolatile memory 25 will be described with reference to the flowchart of FIG.

  The user operates the operation unit 26 to instruct the controller 21 to acquire call sign data of the repeater 3. The controller 21 acquires information (LAT, LON) indicating the current position of the wireless device 1 shown in FIG. 5 from the GPS receiver 29 connected to the wireless device 1 in accordance with a user instruction (step S1).

  Specifically, the controller 21 captures a packet including position information transmitted from the GPS receiver 29 via the interface unit 19 in accordance with an instruction signal from the operation unit 26, extracts the position information DP from the packet, and temporarily stores it in the RAM 24. To store.

  Next, the controller 21 reads the position information D1 of the repeater from the table T stored in the non-volatile memory 25, compares it with the position information DP acquired from the GPS receiver 29, and repeats adjacent repeaters based on the latitude LAT and longitude LON. 3 is extracted (step S2). At this time, repeaters whose connection information D3 is “impossible” are excluded from extraction targets.

  Subsequently, the controller 21 calculates area information D8 for each extracted repeater based on the position information D1 and range information D2 of the table T (step S3). In addition, the controller 21 calculates the uplink frequency D9 based on the data D5, D6 and D7 of the table T (same step).

  Then, the controller 21 creates a list L including these data (same step). The list L includes the repeater call sign D4 and the downlink frequency D5 in addition to the calculated area information D8 and the uplink frequency D9.

  Subsequently, the controller 21 compares the area information D8 of the repeater listed in the list L with the position information DP of the repeater 3 acquired from the GPS receiver 29 (step S4). Then, the controller 21 extracts the repeater 3 in which the current position of the wireless device 1 is included in the area, and when there are a plurality of repeaters, selects the repeater having the highest priority set in advance (same step).

  Subsequently, the controller 21 reads the call sign D4 of the selected repeater from the list L and notifies the transmission unit 15 (step S5). Further, the controller 21 reads out the frequency data of the selected repeater from the list L, notifies the transmitter unit 15 of the uplink frequency D9, and notifies the receiver unit 18 of the downlink frequency D5 (same step).

  Subsequently, the transmission unit 15 sets the transferred call sign in the packet as the call sign of the source repeater, and switches the transmission frequency to the notified uplink frequency (step S6). On the other hand, the reception unit 18 switches the reception frequency to the notified downlink frequency (step S7).

  When the preparation for communication is completed in this way, the controller 21 outputs a beep sound or the like from the speaker 12 to notify the user of the wireless device 1 that the preparation for communication has been completed. The user then operates the PTT switch 27 to start communication with other stations.

As described above, the wireless device according to the present invention stores a table including repeater position information, area information, call sign, and frequency in a memory in advance, and the current position of the wireless device acquired by the position information acquisition device. Is automatically extracted from all the repeaters except those that are included in the area and the user does not want to connect, by comparing the position information and area information of the repeaters stored in the memory, The call sign of one repeater that performs communication is taken out from the list. As a result, the call sign of a communicable repeater can be automatically acquired without performing complicated operations by the user.

  Also, because the table contains data for the uplink and downlink frequencies of the repeater, the frequency is read and notified to the transmitter and receiver, so that the transmit frequency and the receive frequency are set to values corresponding to the repeater. It can be switched automatically.

  In the present embodiment, the call sign of the repeater with the highest priority among the repeaters extracted from the list is notified to the transmission unit, but communication with the selected repeater is not possible due to an obstacle or the like. There is a case. In such a case, communication with the repeater 3 can be reliably ensured by notifying the transmission unit of the call sign of the next highest repeater. Further, the user may perform the selection of the repeater extracted from the list without leaving it to the controller.

  In the present embodiment, the case where the wireless device is mounted on the mobile body has been described, but the present invention can also be applied to a semi-fixed station and a wireless device of a fixed station. In this case, when installing the radio device, if the GPS receiver is connected to acquire position information of the radio device, and then the GPS receiver is removed from the radio device, it is not necessary to always connect the GPS receiver. .

  In this embodiment, the data included in the table T is stored in the non-volatile memory so that the data is not lost when the radio is turned off. However, the data is stored in the RAM backed up by the battery. Also good.

  Further, a program for causing a computer to execute the function of the controller of the present embodiment may be recorded on a recording medium (for example, a CD-ROM) and distributed, or distributed over a network. The computer program is recorded and installed on a computer recording medium.

DESCRIPTION OF SYMBOLS 1, 1a-1e Radio | wireless machine 2, 2a, 2b Area 3, 3a, 3b Repeater 4 Gateway 5a, 5b, 5c Zone 6 Internet 11 Microphone 12 Speaker 13 AF amplifier 14 Voice codec 15 Transmission part 16 Transmission / reception switching part 17 Antenna 18 Reception Unit 19 interface unit 21 controller 25 non-volatile memory 26 operation unit 27 PTT switch 28 display unit 100 amateur radio system Pa packet Ph head unit Pd data unit T table L list

Claims (9)

An analog audio signal is A / D converted and encoded to be converted into a digital audio signal, then a packet including the digital audio signal is generated, and the packet is converted into a radio signal and transmitted.
As the packet, the header portion includes an identifier for identifying a transmission destination and a transmission source wireless device, and identifier data for identifying a repeater in an area to which the wireless devices belong, and the data portion includes the data of the digital audio signal. A transmitter that generates the included packets;
A controller for notifying the transmitter of the data of each identifier;
Memory storing a table including position information of the repeaters installed at a plurality of locations, information indicating a service area, information whether or not a user desires connection to the repeaters, and identifier data;
A position information acquisition device that acquires information indicating the position of the transmitter radio,
Prior to transmission, the controller
The information indicating the current position of the transmission source radio obtained from the position information acquisition device is compared with the position information of the repeater included in the table, and data of a plurality of repeaters close to the radio is obtained from the table. If the table contains information indicating that connection to the repeater is not desired , create a list excluding the repeater ,
Comparing the information indicating the current position of the wireless device and the information indicating the service area of the list, and selecting one repeater from a plurality of repeaters in which the current position of the wireless device is included in the service area;
Radios and notifies the transmission unit as an identifier of the signal source repeater sending an identifier of the selected repeater. A receiver that demodulates the received radio signal and extracts the packet;
In addition, the table and the list include uplink and downlink frequency data of the repeater,
The controller according to claim 1, wherein the controller reads an uplink frequency of the selected repeater from the list and notifies the transmitter of the selected frequency, and reads a downlink frequency and notifies the receiver of the frequency. The radio described. Priority is set for the repeaters included in the list,
The wireless device according to claim 1 or 2 , wherein the controller selects a repeater having a high priority when selecting one repeater from the list. The wireless device according to claim 3 , wherein the priority is set using a size of a service area of the repeater as a parameter. The wireless device according to claim 3 , wherein the priority is set by using a distance from the wireless device to the repeater as a parameter. The said service area is set by the rectangle enclosed with the line which shows the latitude and the longitude, The position where the said repeater was installed in the rectangle is included, The Claim 1 thru | or 5 characterized by the above-mentioned. Radio. The location is characterized by using a GPS receiver as the information acquiring apparatus, the wireless apparatus according to any one of claims 1 to 6. Characterized by using a nonvolatile memory as a memory for storing the table, radio according to any one of claims 1 to 7. Computer
Identifier for identifying the signal destination and transmit the original radio transmission in the header section, and includes a data identifier for identifying the repeater area that these radios belongs, code analog audio signal is A / D converted data unit A computer program that causes a transmitter that generates a packet including a digital audio signal to function as a controller that notifies the data of each identifier ,
The controller is
Information indicating the current position of the transmission source radio obtained from the position information acquisition unit that acquires information indicating a position before the SL source radio, the location information of the repeater installed at a plurality of locations, service areas Information indicating whether or not the user wishes to connect to the repeater and the position information of the repeater included in a table including identifier data, and data of a plurality of repeaters close to the radio If it is extracted from the table and the table contains information indicating that the connection to the repeater is not desired, a list excluding the repeater is created,
Comparing the information indicating the current position of the wireless device and the information indicating the service area of the list, and selecting one repeater from a plurality of repeaters in which the current position of the wireless device is included in the service area;
Computer program and notifies the transmission unit as an identifier of the signal source repeater sending an identifier of the selected repeater.

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