JP2011029877A - Simulator for simulating communication environment - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To solve the problem that there is no simulator which reproduces radiowave propagation environment where an operation test of radio equipment which requires, for operation thereof, setting by a beacon or a LAN, GPS information, information from radio broadcasting etc., can be performed. <P>SOLUTION: In the simulator to which a plurality of pieces of radio equipment can be connected, and which simulates the radiowave propagation environment between the pieces of radio equipment, the simulator is provided with: a virtual propagation path which reproduces propagation characteristics between the plurality of pieces of radio equipment; and a signal generation circuit which generates a signal for operation including virtually created information to be used for a simulating operation of the radio equipment to be connected. Thus, the operation test of the connected radio equipment is performed using the signal for operation. <P>COPYRIGHT: (C)2011,JPO&INPIT

Description

  The present invention relates to an apparatus for performing an operation test of a wireless device. More specifically, the present invention relates to an apparatus for simulating a propagation path in which a propagation path is virtually formed and the propagation characteristics of the formed propagation path can be changed.

  In recent years, the environment surrounding the development of wireless devices has become more severe. As an example, there are restrictions on the output power and frequency used even in the development stage of the radio. In another example, it is difficult to send a radio wave and perform a communication test itself.

In order to solve such problems, various attempts have been made, and technological development is also progressing.
As an example of a related technique, Patent Document 1 describes a technique for virtually reproducing a radio wave propagation path between wireless devices using an information processing device and an attenuator. Japanese Patent Application Laid-Open No. 2004-133867 describes a technique that, in addition to virtually reproducing a radio wave propagation path, a circuit that generates a Doppler frequency is provided so that a time change of the radio wave propagation path such as fading can be reproduced.
Patent Document 2 describes a technique for reproducing a virtual propagation path by configuring a transmission path in a matrix shape in order to reproduce communication between a plurality of wireless devices. Furthermore, a technique is described in which a scenario is created by an information processing apparatus, and information related to the created scenario can be presented to an operator of a wireless device.

Japanese Patent Laid-Open No. 9-162813 Japanese Laid-Open Patent Publication No. 2003-60591

  However, the simulation apparatuses described in Patent Document 1 and Patent Document 2 are not considered at all for simulating the operation of some of the radio devices actually used.

  Some of the above-mentioned radios include a radio that requests some beacon for operation, a radio that requests information input using a LAN connection for setting, and receives signals from GPS and other radio broadcasts for operation. Although the required radio | wireless machine etc. are mentioned, patent document 1 or 2 is not considered at all about simulating the operation | movement of these radio | wireless machines. For this reason, in the simulation apparatus described in Patent Documents 1 and 2, it is not possible to perform an operation test of some wireless devices.

Accordingly, an object of the present invention is to solve the above-mentioned problems and to provide a simulation device capable of performing operation tests on many radio devices. Another object of the present invention is necessary for virtual operation of a radio device. An object of the present invention is to provide a simulation apparatus that can provide a certain operation signal.

  The simulation apparatus of the present invention is connected to a virtual propagation path that reproduces propagation characteristics between a plurality of wireless devices in a simulation device that connects a plurality of wireless devices and simulates a radio wave propagation environment between the wireless devices. And a signal generation circuit that generates an operation signal including information virtually used by the operation of the wireless device.

  ADVANTAGE OF THE INVENTION According to this invention, the simulation apparatus which can perform the operation test of the radio | wireless machine which requires the signal for operation | movement can be provided.

It is a lineblock diagram showing roughly a simulation device of one embodiment. It is the schematic which illustrates the internal structure of a virtual propagation path. It is a functional block diagram which shows a simulation apparatus functionally. It is a flowchart which shows operation | movement of the simulation apparatus of one Embodiment. It is a functional block diagram which shows the 1st example of an application functionally. It is a functional block diagram which shows the 2nd example of an application functionally. It is a functional block diagram which shows the 3rd example of an application functionally. It is a functional block diagram which shows the 4th example of an application functionally.

  An embodiment of the present invention will be described with reference to FIGS. The wireless device 900 used in the description of this embodiment cannot communicate with only a wireless device (including an antenna and a power supply), requires some external information, or operates an additional function of the wireless device. It is a radio that requires some external information.

  FIG. 1 is a configuration diagram schematically showing a simulation apparatus 1 according to an embodiment. The simulation apparatus 1 according to the present embodiment includes an information processing apparatus 10 that performs various types of information processing, a virtual propagation path 20 that reproduces a propagation environment between wireless devices, and a signal generation circuit 30.

  The information processing apparatus 10 is a general computer, and includes a control unit that performs arithmetic processing therein, a ROM, a RAM, a storage device, an input unit, an output unit, a network interface, and the like, and a display device and an input A device is connected. The information processing apparatus 10 may be a general-purpose information processing apparatus or a dedicated information processing apparatus. There is no particular limitation as long as a function described later can be provided.

  The virtual propagation path 20 simulates a propagation environment (propagation characteristics and the like) between the wireless devices 900 according to an instruction from the information processing apparatus 10. A plurality of wireless devices 900 are connected to the virtual propagation path 20, and a signal transmitted from one wireless device 900 is transmitted (propagated) to another wireless device 900. Specifically, both antennas of the wireless device 900 to be connected and another wireless device 900 to be connected are disconnected from the RF terminal. The RF terminals of both wireless devices 900 and the virtual propagation path 20 are connected using coaxial cables. By connecting in this way, it is assumed that the wireless device 900 and another wireless device 900 are connected in a virtual propagation environment. In addition, the virtual propagation path 20 can change the propagation characteristics of the virtual propagation path according to an instruction from the information processing apparatus 10. Details will be described later with reference to FIG.

  The signal generation circuit 30 generates a signal necessary for the operation of the wireless device according to an instruction from the information processing apparatus 10 and transmits the signal to the wireless device 900. In addition, a signal transmitted from the wireless device 900 is received and transmitted to the information processing apparatus 10.

  FIG. 2 is a schematic diagram illustrating the internal structure of the virtual propagation path 20. FIG. 2 shows a virtual propagation path 20 that enables connection of seven wireless devices. Note that the number of virtual propagation paths 20 is not particularly limited to seven.

  The virtual propagation path 20 includes a plurality of connectors 201 connected to the wireless device 900 disposed at the end, and a plurality of distributors that distribute electric signals from the wireless device 900 transmitted and received from the connector 201 to other connectors 201. 202, and a plurality of attenuators (attenuators) 203 provided between a distributor 202 and another distributor 202 and capable of adjusting the amount of attenuation by an attenuator control signal. The distributor 202 is connected to all the distributors 202 via the attenuators 203 and has a matrix shape. The attenuator control signal adjusts the attenuation amount of the attenuator 203 using information transmitted by the information processing apparatus 10.

FIG. 3 is a functional block diagram functionally showing the simulation apparatus 1.
The information processing apparatus 10 has a plurality of functions realized by a program, and has at least a propagation attenuation calculation function 110 and a signal instruction function 120.

  The propagation attenuation calculation function 110 calculates virtual propagation path attenuation information from data input from the input unit of the information processing apparatus 10, data calculated by other programs, data recorded in a storage device, and the like.

  The attenuation information of the virtual propagation path is transmitted to the virtual propagation path 20 and used to form a virtual propagation path between the wireless devices 900.

  The signal instruction function 120 is a function for creating and transmitting instruction information for instructing generation of the signal to a signal generation circuit that generates a signal for controlling the operation of the radio or a signal for controlling the operation of the additional function of the radio. . The instruction information is, for example, GPS radio waves, GPS signals, position information, synchronization signals, time information, and the like.

  In addition to the propagation attenuation calculation function 110 and the signal instruction function 120, the information processing apparatus 10 is provided with various functions and means as necessary to generate a signal required for forming a virtual propagation path and operating the radio. Used.

  The virtual propagation path 20 is provided with at least a propagation attenuation simulation function 210 and an attenuator control function 220. The propagation attenuation simulation function 210 receives the attenuation information of the virtual propagation path and the fading information transmitted from the information processing apparatus 10, and based on the use frequency band, the attenuation of the connector 201 and the distributor 202 that form the radio wave propagation path, and the like. The amount of attenuation of the attenuator 203 is simulated. The attenuator control function 220 adjusts the attenuation characteristic of the attenuator 203 using the attenuator control signal based on the calculation result. That is, the propagation attenuation simulation function 210 adjusts the attenuation amount of the virtual propagation path by adjusting the attenuator 203 using the attenuator control function 220.

  The signal generation circuit 30 is provided with at least a signal transmission function 310.

  The signal transmission function 310 has a role of receiving various instruction information transmitted from the information processing apparatus 10 and converting the instruction information into a format that can be read by the wireless device 900. That is, a signal instructed from the information processing apparatus 10 is transmitted to the wireless device 900.

  In such a configuration, the simulation apparatus 1 according to the embodiment can construct a virtual propagation path and supply signals necessary for the operation of the wireless device.

Next, the operation of the simulation apparatus 1 according to the embodiment of the present invention will be described.
FIG. 4 is a flowchart illustrating the operation of the simulation apparatus 1 according to the embodiment. The operation of the simulation apparatus 1 will be described with reference to FIG. The number of connected wireless devices 900 is three, and each wireless device is represented by 900A to 900C.
The radio test is performed on the assumption that the radios are distributed every several kilometers.

  The wireless devices 900A to 900C used have a function of changing the transmission radio wave intensity depending on the distance from the communication partner wireless device. Further, the distance from the communication partner wireless device is the same as that of the wireless devices 900A to 900C. It is assumed that the information can be input from the information input terminal. Although the information input terminal is described as being provided for each wireless device, in practice, an RF terminal may be used or a test terminal on the base of the wireless device may be used.

  A person who performs a test of the wireless device inputs position information of the wireless devices 900A to 900C to the information processing device 10 using the input device of the information processing device 10 (step S401). The position information is three-dimensionally, that is, X. Y. It may be represented by the Z axis, or may be represented by latitude, longitude, and altitude.

The control unit of the information processing device 10 calculates the distance between the wireless devices using the input position information of the wireless devices 900A to 900C according to the program (step S402).
The control unit of the information processing apparatus 10 calculates the propagation attenuation amount from the calculated distance information using the propagation attenuation calculation function 110 (step S403).
The control unit of the information processing apparatus 10 transmits information including the calculated propagation attenuation amount as attenuation information to the virtual propagation path 20 (step S404).
The control unit of the information processing apparatus 10 uses the signal instruction function 120 to create position information that is information on each virtual position provided to the wireless devices 900A to 900C (step S405).
The control unit of the information processing apparatus 10 transmits the created position information as instruction information to the signal generation circuit 30 (step S406).

The virtual transmission path 20 receives the attenuation information transmitted from the information processing apparatus 10, and uses the propagation attenuation simulation function 210 and the attenuator control function 220 to attenuate the attenuation characteristics of the attenuator 203 between the wireless devices 900A to 900C. Are individually changed (step S407).
Note that by changing the attenuation characteristics of the attenuator 203 individually, the attenuation characteristics of the virtual propagation path between the wireless devices 900A to 900C are changed. That is, the virtual propagation path between 900A to 900C is formed from the positional relationship between the radios 900A to 900C input to the information processing apparatus 10.

  The signal generation circuit 30 receives the instruction information transmitted from the information processing apparatus 10, generates a signal in a format that can be identified by the radio using the signal transmission function 310, and generates the signal in the radio 900A to the radio 900C. An operation signal is transmitted (step S408).

  By the above operation, the radios 900A to 900C receive the signal transmitted from the signal generation circuit from the information input terminal, and acquire the position information or distance information of the transmission partner from the signal, thereby obtaining the distance from the communication partner. Based on this, it is possible to change the transmitted radio wave intensity.

Through the above series of operations, the simulation apparatus 1 according to the embodiment can form a virtual propagation path between the radios 900A to 900C. At the same time, position information (distance information) can be provided (transmitted) to the radio devices 900A to 900C.
That is, it is possible to provide a simulation apparatus that can supply signals (position information and distance information) necessary for the operation of the wireless device.

  Next, in order to clarify the operation of the simulation apparatus 1 of the embodiment, a plurality of adaptation examples will be given and the operation will be described.

FIG. 5 is a functional block diagram functionally showing the first adaptation example.
The first application example shows a simulation apparatus 1 for receiving a GPS radio wave, specifying its own position, and performing an operation test of a radio having a function of notifying its communication partner of its own position information. To do.

  In the simulation apparatus 1 of the first application example, at least the information processing apparatus 10 has a propagation attenuation calculation function 110 and a signal instruction function 120, and the virtual propagation path 20 includes a propagation attenuation simulation function 210, an attenuator. The signal generation circuit 30 includes a signal transmission function 310 and a GPS radio wave reception function 320.

The GPS radio wave reception function 320 includes a GPS antenna and a GPS radio wave processing device (GPS module), receives GPS radio waves from GPS satellites, and acquires time information, position information, and the like as GPS information. Here, the GPS information refers to information obtained by the GPS radio wave processing device processing GPS radio waves.
It should be noted that receiving GPS radio waves from a plurality of satellites and acquiring position information and the like is not necessary and will not be described.

  The signal transmission function 310 receives the instruction information (information on the position of the wireless device in the virtual space) transmitted from the information processing apparatus 10 and receives the GPS information acquired from the GPS radio wave reception function 320, that is, the actual position information. Overwriting is performed as simulated GPS information, converted into a format that can be read by the wireless device 900, and the simulated GPS information is transmitted to the wireless device 900.

In such a configuration, the simulation apparatus 1 of the first application example operates as follows.
The test environment is distributed between several radios every several kilometers, and the radios 900A to 900C to be used are from the output side (secondary side) of the GPS radio wave processing device provided in each radio, It is assumed that simulated GPS information is input instead of GPS information, and each wireless device recognizes position information and the like based on the simulated GPS information.

  A person who performs a test of the wireless device inputs position information of the wireless devices 900A to 900C to the information processing device 10 using the input device of the information processing device 10 (step S401).

The control unit of the information processing apparatus 10 calculates the distance between the wireless devices using the input position information of the wireless devices 900A to 900C (step S402).
The control unit of the information processing apparatus 10 calculates the propagation attenuation amount from the calculated distance information (step S403).
The control unit of the information processing apparatus 10 transmits attenuation information to the virtual propagation path 20 (step S404).
The control unit of the information processing apparatus 10 creates position information provided to the wireless devices 900A to 900C (step S405).
The control unit of the information processing apparatus 10 transmits the created position information as instruction information to the signal generation circuit 30 (step S406).
The virtual transmission path 20 receives the attenuation information, individually changes the attenuation characteristics of the attenuator 203 between the radios 900A to 900C, and forms a virtual propagation path (step S407).

  The signal generation circuit 30 receives the instruction information transmitted from the information processing apparatus 10, and uses the GPS radio wave reception function 320 and the signal transmission function 310 to convert GPS information including actual position information into the position included in the instruction information. The simulated GPS information including the information is overwritten and generated, and the generated simulated GPS information is transmitted to the wireless devices 900A to 900C (step S408).

  Through the above operation, the wireless devices 900A to 900C can receive the simulated GPS information, acquire the position information from the simulated GPS information, and notify the communication partner of their own position information.

Through the above series of operations, the simulation apparatus 1 according to the embodiment can form a virtual propagation path between the radios 900A to 900C. At the same time, simulated GPS information including virtual position information can be transmitted to the radio devices 900A to 900C.
That is, it is possible to provide a simulation device that can supply information (simulated GPS information) necessary for the operation of the wireless device.

  Next, a second adaptation example is shown. The second application example will be described with reference to a simulation apparatus 1 in the case of receiving a GPS radio wave, extracting synchronization information (time information), and performing an operation test of a radio having a function used for communication.

FIG. 6 is a functional block diagram functionally showing the second adaptation example.
In the simulation apparatus 1 of the second application example, at least the information processing apparatus 10 has a propagation attenuation calculation function 110 and a signal instruction function 120, and the virtual propagation path 20 includes a propagation attenuation simulation function 210, an attenuator. The signal generation circuit 30 includes a signal transmission function 310 and a GPS radio wave reception function 320.
The signal transmission function 310 receives the instruction information (synchronization information and time information) transmitted from the information processing apparatus 10, overwrites the actual time information and synchronization information acquired from the GPS radio wave reception function 320, and wirelessly The data is converted into a format that can be read by the wireless device 900, and the synchronization information and time information are transmitted to the wireless device 900.

In such a configuration, the simulation apparatus 1 of the second application example operates as follows.
The test environment is that the radios communicate with each other using the TDMA (Time Division Multiple Access) system, and a plurality of radios construct a radio network with the master radio and the slave radio, and GPS It is assumed that communication is performed by synchronizing between radios using a slave synchronization system having a satellite as a main station, and further, the radios are arranged at intervals of several kilometers.

  A person who performs a test of the wireless device uses the input device of the information processing device 10 to input the position information, synchronization information, and time information of the wireless devices 900A to 900C to the information processing device 10 (step S401).

  The control unit of the information processing apparatus 10 calculates the distance between the wireless devices using the input position information (step S402). The control unit of the information processing apparatus 10 calculates the propagation attenuation amount from the calculated distance information (step S403). The control unit of the information processing apparatus 10 transmits attenuation information to the virtual propagation path 20 (step S404). The control unit of the information processing apparatus 10 creates synchronization information and time information to be provided to the wireless devices 900A to 900C (step S405). The control unit of the information processing apparatus 10 transmits the created synchronization information and time information as instruction information to the signal generation circuit 30 (step S406).

  The virtual transmission path 20 receives the attenuation information, individually changes the attenuation characteristics of the attenuator 203 between the radios 900A to 900C, and forms a virtual propagation path (step S407).

  The signal generation circuit 30 receives the instruction information, generates synchronization information and time information included in the instruction information as simulated GPS information using the GPS radio wave reception function 320 and the signal transmission function 310, and transmits the wireless device 900A to the wireless device. The generated simulated GPS information is transmitted to 900C (step S408).

  Through the above operation, the wireless devices 900A to 900C can receive the simulated GPS information, acquire the synchronization information and time information from the simulated GPS information, and synchronize with the communication partner.

  Through the above series of operations, the simulation apparatus 1 according to the embodiment can form a virtual propagation path between the radios 900A to 900C. At the same time, simulated GPS information including virtual synchronization information and time information can be transmitted to the wireless devices 900A to 900C.

  That is, it is possible to provide a simulation device that can supply information (simulated GPS information) necessary for the operation of the wireless device.

  Next, a third adaptation example is shown. The third adaptation example shows and describes the simulation apparatus 1 when receiving a GPS radio wave, extracting position information and synchronization information, and performing an operation test of a radio device having a function used for communication.

FIG. 7 is a functional block diagram functionally showing the third adaptation example.
In the simulation apparatus 1 of the third application example, at least the information processing apparatus 10 has a propagation attenuation calculation function 110 and a signal instruction function 120, and the virtual propagation path 20 includes a propagation attenuation simulation function 210, an attenuator. The signal generation circuit 30 includes a signal transmission function 310 and a GPS radio signal generation function 330.
The GPS radio signal creation function 330 is a function that virtually creates a GPS radio wave transmitted from a GPS satellite.
The signal transmission function 310 receives instruction information (information on the position of the wireless device, information on time used for synchronization information) transmitted from the information processing apparatus 10, and generates a virtual GPS generated by the GPS radio signal generation function 330. GPS simulated information that is a radio wave is generated and transmitted to the wireless device 900.

In such a configuration, the simulation apparatus 1 of the third application example operates as follows.
It is assumed that the test environment is such that communication is performed between the wireless devices using a TDMA (Time Division Multiple Access) system, and further, the wireless devices are distributed every several kilometers.

  A person who performs a test of the radio device inputs position information and time information (synchronization information) of the radio devices 900A to 900C to the information processing device 10 using the input device of the information processing device 10 (step S401).

  The control unit of the information processing apparatus 10 calculates the distance between the wireless devices using the input position information (step S402). The control unit of the information processing apparatus 10 calculates the propagation attenuation amount from the calculated distance information (step S403). The control unit of the information processing apparatus 10 transmits attenuation information to the virtual propagation path 20 (step S404). The control unit of the information processing apparatus 10 creates time information to be provided to the wireless devices 900A to 900C (step S405). The control unit of the information processing apparatus 10 transmits the created time information as instruction information to the signal generation circuit 30 (step S406).

  The virtual transmission path 20 receives the attenuation information, individually changes the attenuation characteristics of the attenuator 203 between the radios 900A to 900C, and forms a virtual propagation path (step S407).

  The signal generation circuit 30 receives the instruction information, uses the GPS radio wave signal generation function 330 and the signal transmission function 310 to generate time information and the like included in the instruction information as GPS simulation information, and the wireless device 900A to the wireless device The generated GPS simulation information is transmitted to 900C (step S408).

  With the above operation, the wireless devices 900A to 900C can operate in the same manner as when receiving GPS radio waves, acquire time information from GPS simulated information, and enable communication.

  Through the above series of operations, the simulation apparatus 1 according to the embodiment can form a virtual propagation path between the radios 900A to 900C. At the same time, GPS simulation information including virtual position information and synchronization information can be transmitted to the wireless devices 900A to 900C.

That is, it is possible to provide a simulation device that can supply GPS simulation information (GPS radio wave information) necessary for the operation of the wireless device.
Note that GPS information may be provided instead of GPS radio waves. At this time, the GPS radio signal generation function 330 generates GPS information, and the generated GPS information may be input from the output side of the GPS radio wave processing device of each radio.

  Next, a fourth adaptation example is shown. In the fourth application example, GPS radio waves are received, position information, synchronization information, and time information are extracted, and an operation test of a radio device having a function used for communication is performed. The simulation apparatus 1 in the case of changing the time will be described and described.

FIG. 8 is a functional block diagram functionally showing the fourth adaptation example.
In the simulation apparatus 1 of the fourth application example, at least the information processing apparatus 10 has a propagation attenuation calculation function 110, a signal instruction function 120, and a scenario creation function 130, and the virtual propagation path 20 includes a propagation attenuation simulation function. 210, an attenuator control function 220, and the signal generation circuit 30 has a signal transmission function 310 and a GPS radio signal generation function 330.
The scenario creation function 130 creates a scenario and transmits various information to the propagation attenuation calculation function 110, the signal instruction function 120, and the like. That is, it is possible to reproduce a change in propagation environment due to a moving wireless device, specific weather conditions, or fading. Furthermore, the time axis can be shortened.

In such a configuration, the simulation apparatus 1 of the fourth application example operates as follows.
In the test environment, the wireless devices communicate with each other using the TDMA method, and the wireless devices are arranged at positions set in the scenario and move with time.

  A person who performs a test of the wireless device inputs a scenario to the information processing apparatus 10 using the input device of the information processing apparatus 10 (step S401).

  The control unit of the information processing apparatus 10 acquires position information, synchronization information, and time information of each wireless device from the input scenario, and calculates a distance between the wireless devices (step S402). The control unit of the information processing apparatus 10 calculates the propagation attenuation amount from the calculated distance information (step S403). The control unit of the information processing apparatus 10 transmits attenuation information to the virtual propagation path 20 (step S404). The control unit of the information processing apparatus 10 creates position information, synchronization information, and time information to be provided to the wireless devices 900A to 900C (step S405). The control unit of the information processing apparatus 10 transmits the created information as instruction information to the signal generation circuit 30 (step S406).

  The virtual transmission path 20 receives the attenuation information, individually changes the attenuation characteristics of the attenuator 203 between the radios 900A to 900C, and forms a virtual propagation path (step S407).

  The signal generation circuit 30 receives the instruction information, uses the GPS radio signal generation function 330 and the signal transmission function 310 to generate position information, synchronization information, and time information included in the instruction information as GPS simulation information, and wirelessly The created GPS simulation information is transmitted to device 900A to wireless device 900C (step S408).

  Through the above operation, the wireless devices 900A to 900C receive GPS simulation information, acquire position information, synchronization information, and time information, and enable communication.

Through the above series of operations, the simulation apparatus 1 according to the embodiment can form a virtual propagation path between the radios 900A to 900C. At the same time, GPS simulation information including virtual position information, synchronization information, and time information can be transmitted to the radio devices 900A to 900C.
In addition, because tests can be performed according to the scenario, various test environments can be virtually realized. For example, when a radio moves on the ground, the sea, and the air with time change, a high-speed movement test and a radio handover test can be performed. Furthermore, the interval of the synchronization information can be shortened and an acceleration test can be performed. In addition, it can reproduce the change of GPS radio wave condition due to entering and exiting tunnels and conduct tests.
That is, it is possible to provide a simulation apparatus that can supply information useful for the operation and test of the wireless device.

  In addition to the above adaptation examples, the signal generation circuit 30 generates a signal that simulates GPS information received from a GPS radio wave and transmitted from the GPS module, and broadcast radio wave specific information (time signal information, synchronization information, By providing a circuit that simulates and generates a carrier wave or the like, and a device having a DHCP function that allocates an IP address to the wireless device, various wireless devices can be supported.

That is, as described in the above application example, the simulation apparatus 1 according to the embodiment can provide a simulation apparatus that can supply information (signal) necessary for the operation (simulation operation) of the wireless device.
Furthermore, a simulation apparatus that can virtually supply GPS information such as time information and beacons such as broadcast radio waves can be provided.
Furthermore, it is possible to provide a simulation apparatus that can be connected via a LAN or the like and can supply various information.

  Furthermore, it is possible to provide a simulation apparatus that can perform a test in a special environment such as an anechoic chamber or a basement.

  In the description of the embodiment and the application example, the signal generation circuit 30 is connected to the wireless device 900 by wire, but is not limited to wire. Communication waves such as infrared communication, wireless LAN, and broadcast radio waves may be generated and transmitted wirelessly to the wireless device.

  Further, the operation information provided to the wireless device 900 may be provided using a plurality of terminals and methods. For example, position information may be input from an RF terminal, and synchronization information and time information may be input to the GPS radio wave processing apparatus.

  In addition, bidirectional communication may be used instead of unidirectional communication with the wireless device 900. In this case, the test can be performed efficiently if the setting of the wireless device is field-backed.

  Moreover, although GPS was demonstrated to the example, it is not necessary to be caught in GPS in particular. In order to allocate the IP address described above, it is possible to connect a signal generation circuit and a wireless device by IEEE 802.3, or to simulate and transmit a broadcast radio wave. That is, it is meaningful to provide useful information (desired information) such as a GPS signal and an IP address to the wireless device.

DESCRIPTION OF SYMBOLS 1 Simulation apparatus 10 Information processing apparatus 20 Virtual propagation path 30 Signal generation circuit 110 Propagation attenuation calculation function 120 Signal instruction function 130 Scenario creation function 210 Propagation attenuation simulation function 220 Attenuator control function
310 Signal Transmission Function 320 GPS Radio Wave Reception Function 330 GPS Radio Signal Creation Function 900 Radio

Claims (6)

In a simulation device that connects multiple wireless devices and simulates the radio wave propagation environment between the wireless devices,
A virtual propagation path that reproduces the propagation characteristics between multiple wireless devices,
A signal generation circuit for generating an operation signal including information virtually created by using the operation of the connected radio; and
A simulation apparatus characterized by comprising: The simulation device according to claim 1,
In addition, a scenario creation means for creating a scenario that simulates the passage of time between the wireless device and the wireless environment in the virtual space,
The signal generation circuit includes:
Means for generating position information of a radio in the virtual space defined in the scenario as one of the operation signals;
A simulation apparatus comprising: means for transmitting the operation signal to the wireless device. The simulation apparatus according to claim 1 or 2,
Furthermore, a GPS radio wave receiving means for receiving a GPS radio wave transmitted from a GPS satellite is provided,
The signal generation circuit includes:
A simulation apparatus comprising: means for generating position information of a wireless device in the virtual space as one of the operation signals by using GPS radio waves received by the GPS radio wave receiving means. The simulation apparatus according to claim 1 or 2,
GPS radio wave generation means for generating and transmitting GPS simulation information for simulating GPS radio waves transmitted from GPS satellites,
The signal generation circuit includes:
Adjusting the GPS simulation information generated by the GPS radio wave generation means using position information of a wireless device in a virtual space, and transmitting the adjusted GPS simulation information as one of the operation signals. A featured simulation device. The simulation apparatus according to claim 1 or 2,
Means for virtually generating GPS information contained in GPS radio waves,
The signal generation circuit includes:
Using means for virtually generating the GPS information, and having means for generating, as one of the operation signals, simulated GPS information including position information of the wireless device in a virtual space transmitted to the wireless device. A featured simulation device. A simulation device according to any one of claims 1 to 5,
The simulation apparatus further includes means for virtually generating GPS synchronization information as one of the operation signals.

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