JP4819077B2 - Communication verification device, communication verification method, and communication verification program - Google Patents

Description

  The present invention relates to a communication verification device, a communication verification method, and a communication verification program.

  In recent years, mobile communication, which is a communication method capable of communicating while moving one or both terminals, has become widespread. This mobile communication is a radio network controller (RNC), a radio base station device (BTS: Base Transceiver Station), an exchange, or a device such as a mobile device (hereinafter referred to as “mobile network related device”). ).

  Research and development and verification of such mobile network-related devices are actually performed by building a mobile network. Further, communication verification (for example, verification at the time of occurrence of handover) when the mobile body moves is performed by actually moving the mobile body.

  As described above, in order to verify a mobile network-related device, it is necessary to actually construct a mobile network or actually move a moving body, which is very troublesome. Thus, in recent years, several techniques for reducing this kind of complicated work have been proposed. For example, a pseudo base station apparatus that artificially generates a handover by changing transmission levels of a plurality of slots in a radio base station apparatus is disclosed. By using this technique, it is possible to verify handover by one pseudo base station apparatus.

JP-A-9-205670 Japanese Unexamined Patent Publication No. 6-0669849

  However, even if the above-described conventional technology is used, there is a problem that various errors cannot be generated intentionally and easily. Specifically, even if the above-described conventional technology is used, it is difficult to intentionally control the delay time of packets flowing in the mobile network, the loss rate and error rate of such packets, and the like. It was.

  The disclosed technology has been made in order to solve the above-described problems caused by the prior art, and various types of communication can be performed without actually constructing a large-scale network or actually moving a moving object. An object of the present invention is to provide a communication verification device, a communication verification method, and a communication verification program that can intentionally and easily generate an error.

In order to solve the above-described problems and achieve the object, a communication verification apparatus disclosed in the present application is connected to a mobile network, and a virtual mobile body that is a virtual mobile body and a predetermined terminal are connected via the mobile network. A communication verification device for communicating with a device, the communication state corresponding to a virtual area that is a plurality of virtual areas in a virtual network that is a virtual network generated by the communication verification device An error content that occurs in the communication state in association with a state number for identifying the mobile station, a movement condition for moving the virtual mobile body to one of a plurality of virtual areas in the virtual network, and a plurality of the virtual networks the association with the network number for identifying Sina to the home address of the virtual network, is defined Based on o, virtual wherein the moving body moving means for moving the virtual mobile to one of said plurality of virtual areas belonging to said plurality of virtual networks, virtual moving object moved by the moving body moving means is positioned A communication means for generating an error content corresponding to an area and performing communication using a home address of a virtual network to which the virtual area belongs , between the virtual mobile unit and the terminal device; To do.

  It should be noted that a method, apparatus, system, computer program, recording medium, data structure, etc., in which any component, expression, or any combination of the components of the communication verification device disclosed in the present application is effective as another aspect. is there.

  According to the communication verification apparatus disclosed in the present application, various errors during communication can be generated intentionally and easily without actually constructing a large-scale network or actually moving a moving object. There is an effect that can be done. As a result, it is possible to perform research and development and verification of mobile network-related devices in various environments without actually constructing a large-scale network or actually moving a mobile object.

  Embodiments of a communication verification apparatus, a communication verification method, and a communication verification program disclosed in the present application will be described below in detail with reference to the drawings. Note that the embodiment does not limit the communication verification device, the communication verification method, and the communication verification program disclosed in the present application.

  First, an outline of the communication verification apparatus according to the present embodiment will be described. FIG. 1 is a diagram illustrating a configuration example of a mobile network to which the communication verification apparatus according to the present embodiment is applied. The mobile network 1 shown in the figure includes a predetermined terminal device (hereinafter referred to as “CN: Correspondent Node”) 10, a home agent (hereinafter referred to as “HA: Home Agent”) 20, and a communication verification device 100. Wired connection or wireless connection through the network.

  The CN 10 is a terminal device that communicates with the communication verification device 100, and is, for example, a mobile personal digital assistant (PDA) or a personal computer that is not a mobile object. In FIG. 1, only one CN 10 is shown, but the communication verification apparatus 100 may communicate with a plurality of CNs.

  The HA 20 is a router on a mobile home network in Mobile IP. The HA 20 captures a packet addressed to the mobile body and transfers the packet to the mobile body when the mobile body moves out of the home network, or manages position information of the mobile body.

  The communication verification apparatus 100 generates a virtual network for verification (hereinafter referred to as “virtual network”) and a virtual mobile body (hereinafter referred to as “virtual mobile body”), and converts the virtual mobile body into virtual It is an apparatus that allows communication between the virtual mobile body and the CN 10 while moving in the network.

  Here, a virtual network generated by the communication verification apparatus 100 will be described with reference to FIG. FIG. 2 is a diagram illustrating an example of a virtual network generated by the communication verification apparatus 100.

  In the example shown in the figure, the communication verification device 100 generates three virtual networks N1 to N3. Then, the communication verification device 100 generates three communication states J1 to J3 in the virtual network N1, generates three communication states J4 to J6 in the virtual network N2, and includes three communication states J4 to J6 in the virtual network N3. Communication states J7 to J9 are generated.

  Virtual networks N1 to N3 indicate virtual ranges in which a virtual radio base station device (hereinafter referred to as “virtual base station”) can communicate with a virtual mobile body. For example, the virtual network N1 indicates a virtual range in which the virtual base station A can communicate with the virtual mobile body, and the virtual network N2 indicates a virtual range in which the virtual base station B can communicate with the virtual mobile body. The virtual network N3 indicates a virtual range in which the virtual base station C can communicate with the virtual mobile body. That is, when the virtual mobile body moves from the virtual network N1 to the virtual network N2, a “handover” in which a radio base station apparatus communicating with the virtual mobile body is switched occurs.

  The communication states J1 to J3 indicate communication states in the virtual network N1, in other words, indicate virtual areas (hereinafter referred to as “virtual areas”) in the virtual network N1. That is, the communication states J1 to J3 change according to the virtual area located in the virtual network N1, so that the communication state of the actual mobile body changes depending on the location in the actual network. Realize that. Here, the communication state means a delay time of a packet transmitted / received by the virtual mobile body, a packet loss rate, a packet error rate, and the like.

  Similarly, the communication states J4 to J6 indicate the communication state in the virtual network N2, in other words, the virtual area in the virtual network N2. Similarly, the communication states J7 to J9 indicate the communication state in the virtual network N3, in other words, the virtual area in the virtual network N3.

  Specifically, using the example shown in FIG. 2, when a virtual moving body is located in a virtual area whose communication state is the communication state J1, the delay time of a packet transmitted and received by the virtual moving body is “10 ms (milliseconds). ) ”, Indicating that the packet loss rate is“ 0% ”and the packet error rate is“ 0% ”.

  Further, when the virtual moving body is located in the virtual area whose communication state is the communication state J2, the delay time of packets transmitted and received by the virtual moving body is “50 ms (milliseconds)”, and the packet loss rate is “1%”. , Indicating that the packet error rate is “5%”.

  The communication verification apparatus 100 generates such virtual networks N1 to N3, and performs communication between the virtual moving body and the CN 10 while moving the virtual moving body to the virtual area indicated by the communication states J1 to J9. Make it. For example, when the virtual mobile body is located in the virtual area whose communication state is the communication state J3, the communication verification apparatus 100 generates a packet with a packet loss rate of “20%” and a packet error rate of “40%”. The generated packet is delayed by “200 ms” and transmitted to the CN 10.

  Further, the communication verification apparatus 100 moves the virtual mobile body from the predetermined virtual area of the virtual network N1 to the predetermined virtual area in the virtual network N2, that is, the virtual mobile body is moved across the virtual network. In this case, a location registration (Registration Request) message is transmitted to the HA 20 or a location registration response message is received from the HA 20. In this embodiment, the HA 20 shown in FIG. 1 uses the virtual network N1 shown in FIG. 2 as a home network.

  As described above, the communication verification apparatus 100 according to the present embodiment generates virtual networks having various communication states in the own apparatus, moves the virtual mobile body within the virtual network, and the virtual mobile body is located. According to the communication state (delay time, loss rate, error rate, etc.) of the virtual area, communication is performed between the virtual mobile body and the CN 10 or HA 20. Therefore, communication with the CN 10 or HA 20 can be performed according to various communication states. . That is, when the communication verification apparatus 100 according to the present embodiment is used, various errors are intentionally and easily generated during communication without actually constructing a large-scale network or actually moving a mobile object. As a result, research and development and verification of mobile network-related devices can be performed in various environments.

  Next, the configuration of the communication verification apparatus 100 will be described. FIG. 3 is a block diagram illustrating a configuration of the communication verification apparatus 100. Note that the communication verification apparatus 100 described below generates virtual networks N1 to N3 illustrated in FIG. 2 as virtual networks.

  As shown in FIG. 3, the communication verification apparatus 100 is connected to the information processing apparatus 30, and includes an interface (hereinafter referred to as “(I / F”)) unit 110, an I / F unit 120, and a storage unit 130. And a state setting unit 140 and a communication unit 150.

  The information processing apparatus 30 is an apparatus such as a personal computer that transmits various information and various instructions to the communication verification apparatus 100, and includes a scenario 31. The scenario 31 is a setting file in which information related to a virtual network generated by the communication verification apparatus 100, a communication state in the virtual network, a virtual mobile body, and the like is defined.

  An example of the scenario 31 is shown in FIG. In the scenario 31 shown in the figure, various types of information regarding the virtual networks N1 to N3 shown in FIG. 2 are defined. Specifically, in the scenario 31 shown in FIG. 4, HoA (Home Address) of the virtual networks N1 to N3 is defined in “/ * network definition * /”. In the example shown in the figure, “network_no = X” indicates one virtual network. In the following, it is assumed that “network_no = X” in FIG. 4 corresponds to the virtual network N “X” shown in FIG. For example, “network_no = 1” in FIG. 4 corresponds to the virtual network N1 in FIG. That is, in the example shown in FIG. 4, the HoA of the virtual network N1 is “192.168.1.0”, the HoA of the virtual network N2 is “192.168.2.0”, and the virtual network N3 It is defined that HoA is “192.168.20.0”.

  Further, in the scenario 31 shown in the figure, the virtual network to which the communication states J1 to J9 belong and the specific communication states of the communication states J1 to J9 are defined in “/ * Network characteristics of each state * /”. Yes. In the example shown in the figure, “state_N” indicates one communication state. In the following, it is assumed that “state_N” in FIG. 4 corresponds to the communication state J “N” in FIG. For example, “state_1” in FIG. 4 corresponds to the communication state J1 in FIG.

  That is, in the example shown in the figure, it is defined that the communication state J1 (state_1) is a communication state in the virtual network N1 (network_no = 1). Furthermore, when the virtual mobile body is located in the virtual area whose communication state is the communication state J1, the delay time (Delay) of the packet transmitted and received by the virtual mobile body is “10 ms”, and the loss rate (Loss) of the packet is It is defined that “0%” and the error rate (Error) is “0%”.

  Similarly, in the example shown in the figure, it is defined that the communication state J2 (state_2) is a communication state in the virtual network N1 (network_no = 1). Furthermore, when the virtual mobile body is located in the virtual area whose communication state is the communication state J2, the delay time of packets transmitted and received by the virtual mobile body is “50 ms”, and the loss rate of such packets is “1%”. The error rate is defined to be “5%”.

  Further, in the scenario 31 shown in the figure, in “/ * mobile node initial state definition * /”, the virtual mobile body firstly selects which virtual area among the virtual areas whose communication states are the communication states J1 to J9. Whether it is located is defined. In the example shown in the figure, “mn_X” indicates one virtual moving body. In the following, it is assumed that “mn_X” in FIG. 4 is the virtual mobile unit MN “X”. For example, “mn — 1” in FIG. 4 is assumed to be a virtual mobile MN (Mobile Node) 1. That is, in the example shown in the figure, it is defined that the virtual mobile unit MN1 is first located in a virtual area whose communication state is the communication state J1. As described above, the communication state J1 is defined in “/ * network characteristics of each state * /” to be a communication state in the virtual network N1, so the virtual mobile unit MN1 first The communication state in the virtual network N1 is located in the virtual area whose communication state is J1.

  In the following, it is assumed that the home links of the virtual mobile bodies MN1 to MN3 are virtual networks to which the communication state defined in “/ * mobile node initial state definition * /” of scenario 31 belongs. That is, the home link of the virtual mobile unit MN1 is the virtual network N1, the home link of the virtual mobile unit MN2 is the virtual network N2, and the home link of the virtual mobile unit MN3 is the virtual network N3.

  Similarly, in the example shown in the figure, it is defined that the virtual mobile unit MN2 is first located in a virtual area whose communication state in the virtual network N2 is the communication state J4. First, it is defined that the communication state in the virtual network N3 is located in a virtual area whose communication state is J7.

  Further, in the scenario 31 shown in the figure, the conditions for the virtual mobiles MN1 to MN3 to move the virtual area at “/ * change in mobile node time * /” (hereinafter, this condition is referred to as “movement condition”). And the virtual area of the movement destination of the virtual mobile bodies MN1 to MN3 is defined. In the example shown in the figure, the movement condition is defined in “time”. Specifically, when “10 s (seconds)” has elapsed, the virtual mobile unit MN1 is in communication state J1. It is defined to move from a virtual area to a virtual area whose communication state is communication state J3. Further, it is defined that when “15 seconds” has elapsed, the virtual mobile body MN1 is moved from the virtual area whose communication state is the communication state J3 to the virtual area whose communication state is the communication state J5.

  In the scenario 31 described above, the passage of a predetermined time is defined as the movement condition. However, the movement condition (for example, “move with a probability of 10% every 5 seconds”) may be used as the movement condition. . Moreover, the definition format of the scenario 31 mentioned above is an example to the last, and a definition format is not restricted to the example shown in FIG. For example, in the scenario 31, various types of information may be defined in a CSV (Comma Separated Values) format, an XML (Extensible Markup Language) format, or the like.

  Returning to the description of FIG. 3, the I / F unit 110 is an interface that transmits and receives data between the information processing apparatus 30 and the communication verification apparatus 100. The information processing apparatus 30 includes the I / F unit 110. The scenario 31 is transmitted to the state setting unit 140.

  The I / F unit 120 is an interface that transmits and receives data between the communication verification apparatus 100 and the CN 10 or HA 20. The communication verification apparatus 100 communicates with the CN 10 or HA 20 via the I / F unit 120. Communicate between each other.

  The storage unit 130 is a storage device such as a nonvolatile memory or a hard disk device, and includes an address storage unit 131, an error content storage unit 132, and a current communication state storage unit 133. The address storage unit 131 stores the HoA of the virtual network generated by the communication verification apparatus 100. The address storage unit 131 is initialized by an initial setting unit 141 described later.

  An example of the address storage unit 131 is shown in FIG. As shown in the figure, the address storage unit 131 has an item such as HoA in association with the network number. The network number indicates a number for identifying the virtual network. In the address storage unit 131 shown in the figure, the reference number assigned to the virtual network shown in FIG. 2 is used as the network number. HoA indicates the HoA of the virtual network.

  That is, the first line of the address storage unit 131 illustrated in FIG. 5 indicates that the HoA of the virtual network N1 is “192.168.1.0”, and two lines of the address storage unit 131 illustrated in FIG. The eye indicates that the HoA of the virtual network N2 is “192.168.2.0”.

  The error content storage unit 132 stores the error content in each communication state in the virtual network. The error content storage unit 132 is initialized by the initial setting unit 141. An example of the error content storage unit 132 is shown in FIG. As shown in the figure, the error content storage unit 132 has items such as a delay time, a loss rate, and an error rate in association with the state number.

  The state number indicates a number for identifying a communication state in the virtual network. In the error content storage unit 132 shown in the figure, the reference numerals attached to the communication states shown in FIG. The delay time indicates a delay time of communication performed between the virtual mobile bodies MN1 to MN3 and the CN 10 or the like.

  The loss rate indicates a packet loss rate of a packet transmitted / received between the virtual mobile bodies MN1 to MN3 and the CN 10 or the like. For example, when the loss rate is “10%”, the virtual mobile bodies MN1 to MN3 do not transmit “10%” of the generated packets. In other words, when the loss rate is “10%”, the virtual mobile units MN1 to MN3 transmit “90%” of the generated packets to the CN 10 or the like.

  The error rate indicates a packet error rate of a packet transmitted / received between the virtual mobile units MN1 to MN3 and the CN 10 or the like. For example, when the error rate is “5%”, the virtual mobile units MN1 to MN3 garble the “5%” data in the generated packet (make it error data) and transmit it to the CN 10 or the like.

  That is, the first line of the error content storage unit 132 shown in FIG. 6 indicates that when the virtual mobile bodies MN1 to MN3 are located in the virtual area whose communication state is the communication state J1, the virtual mobile bodies MN1 to MN3 This indicates that packets of “0%” and error rate “0%” are transmitted / received with a delay of “10 ms”. Further, the second row of the error content storage unit 132 illustrated in FIG. 6 shows that when the virtual mobile bodies MN1 to MN3 are located in the virtual area whose communication state is the communication state J2, the virtual mobile bodies MN1 to MN3 This indicates that a packet with “1%” and an error rate of “5%” is transmitted / received with a delay of “50 ms”.

  The current communication state storage unit 133 stores a virtual area where the virtual mobile bodies MN1 to MN3 are currently located. The current communication state storage unit 133 is initialized by the initial setting unit 141 and updated by the mobile unit moving unit 142 described later.

  An example of the current communication state storage unit 133 is shown in FIG. As shown in the figure, the current communication state storage unit 133 has items such as a network number and a state number in association with the virtual mobile body number.

  The virtual mobile body number indicates a number for identifying the virtual mobile bodies MN1 to MN3 generated by the communication verification apparatus 100. Note that the reference numerals attached to the current communication state storage unit 133 and the above-described virtual moving body shown in FIG. The network number corresponds to the network number in the address storage unit 131 shown in FIG. The state number corresponds to the state number of the error content storage unit 132 illustrated in FIG.

  That is, the first line of the current communication state storage unit 133 shown in FIG. 7 indicates that the virtual mobile unit MN1 is currently located in a virtual area whose communication state in the virtual network N1 is the communication state J1. ing. Further, the second line of the current communication state storage unit 133 shown in FIG. 7 indicates that the virtual mobile unit MN2 is currently located in a virtual area whose communication state in the virtual network N2 is the communication state J4. ing.

  The state setting unit 140 illustrated in FIG. 3 is a processing unit that initially sets or updates various types of information in the storage unit 130, and includes an initial setting unit 141 and a moving body moving unit 142. The initial setting unit 141 is a processing unit that sets initial information in various storage units of the storage unit 130 based on various types of information defined in the scenario 31 received from the information processing apparatus 30. Here, the initial information setting process by the initial setting unit 141 will be specifically described by taking as an example the case where the scenario 31 shown in FIG. 4 is received.

  When the scenario 31 shown in FIG. 4 is received, the initial setting unit 141 sets the HoAs of the virtual networks N1 to N3 defined in “/ * network definition * /” of the scenario 31 in the address storage unit 131. . That is, the initial setting unit 141 sets HoA “192.168.1.0” in association with the network number “N1”, like the address storage unit 131 illustrated in FIG. Similarly, the initial setting unit 141 sets HoA “192.168.2.0” in association with the network number “N2”, and associates HoA “192.168.20” with the network number “N3”. .0 "is set.

  Further, the initial setting unit 141 stores the error contents (delay time etc.) of the communication states J1 to J9 defined in “/ * Network characteristics of each state * /” of the scenario 31 shown in FIG. Set in the unit 132. That is, as in the error content storage unit 132 illustrated in FIG. 6, the initial setting unit 141 is associated with the state number “J1”, the delay time “10 ms”, the loss rate “0%”, and the error rate “ 0% "is set. Similarly, the initial setting unit 141 sets a delay time, a loss rate, and an error rate in association with the state numbers “J2” to “J9”.

  Further, the initial setting unit 141 sets the communication state of the virtual area in which the virtual mobile body defined in “/ * mobile node initial state definition * /” of the scenario 31 shown in FIG. Set in the storage unit 133. That is, the initial setting unit 141 sets the state number “J1” in association with the virtual mobile unit number “MN1” as in the current communication state storage unit 133 illustrated in FIG. At this time, the initial setting unit 141 determines that the state number “J1” is the communication state in the virtual network N1 based on “network_no = X” defined in “/ * network characteristics of each state * /” of the scenario 31. And “N1” is set in the network number of the current communication state storage unit 133. Similarly, the initial setting unit 141 sets the network number “N2” and the state number “J4” in association with the virtual mobile body number “MN2”.

  The moving body moving unit 142 is a processing unit that moves the virtual area in which the virtual moving body is located based on various types of information defined in the scenario 31 received from the information processing apparatus 30. Here, the case where the scenario 31 shown in FIG. 4 is received will be described as an example, and the moving body moving process by the moving body moving unit 142 will be specifically described.

  As shown in FIG. 4, in “/ * mobile node time change * /” of scenario 31, when “10 seconds” have elapsed, the virtual mobile unit MN1 is moved from the virtual area whose communication state is the communication state J1. , It is defined to move to a virtual area whose communication state is communication state J3. Accordingly, the mobile unit 142 receives the state number of the current communication state storage unit 133 corresponding to the virtual mobile unit number “MN1” after “10 seconds” have elapsed since the initial setting process by the initial setting unit 141 is completed. , “J1” is updated to “J3”. Since the communication state J3 is a communication state in the virtual network N1, the mobile unit 142 keeps the network number of the current communication state storage unit 133 corresponding to the virtual mobile unit number “MN1” as “N1”. And

  Further, in the scenario 31 shown in FIG. 4, when “15 seconds” have elapsed, the virtual mobile unit MN1 is moved from the virtual area whose communication state is the communication state J3 to the virtual area whose communication state is the communication state J4. It is defined to move. Accordingly, the moving body moving unit 142 corresponds to the virtual moving body number “MN1” after “15 seconds” have elapsed since the process of moving the virtual moving body MN1 from the communication state J1 to the communication state J3 is completed. The state number of the current communication state storage unit 133 is updated from “J3” to “J5”. At this time, since the state J5 is the communication state in the virtual network N2, the mobile unit 142 changes the network number of the current communication state storage unit 133 corresponding to the virtual mobile unit number “MN1” from “N1” to “N2”. Update to

  The communication unit 150 is a processing unit that performs communication between the virtual mobile body and the CN 10 or the HA 20 in accordance with an instruction from the information processing apparatus 30. The communication module 151, the address filter unit 152, and the emulation unit 153 And a log output unit 154.

  The communication module 151 includes a CN communication unit 151a and an HA communication unit 151b. The CN communication unit 151a is a module for realizing communication between the virtual mobile bodies MN1 to MN3 and the CN10.

  Specifically, when the CN communication unit 151a receives an instruction from the information processing device 30 to perform communication between the predetermined virtual mobile units MN1 to MN3 and the CN 10, the predetermined virtual mobile unit MN1 to MN1. The network number of the virtual network in which MN3 is currently located is acquired from the current communication state storage unit 133. Subsequently, the CN communication unit 151a acquires the HoA corresponding to the network number acquired above from the address storage unit 131. Subsequently, the CN communication unit 151 a generates a packet in which the acquired HoA is set as a transmission source address, and outputs the generated packet to the emulation unit 153.

  In addition, when a predetermined packet is transmitted from the CN 10 to the communication verification device 100, the CN communication unit 151a transmits the packet to the I / F unit 120, the emulation unit 153, and the address filter unit 152. Receive via.

  For example, it is assumed that the information processing apparatus 30 instructs the CN communication unit 151a to transmit a packet from the virtual mobile unit MN1 to the CN10. Here, it is assumed that the address storage unit 131 is in the state shown in FIG. The current communication state storage unit 133 is assumed to be in the state shown in FIG. In such a case, the CN communication unit 151a acquires the network number “N1” of the virtual network in which the virtual mobile unit MN1 is currently located from the current communication state storage unit 133. Subsequently, the CN communication unit 151 a acquires HoA “192.168.1.0” corresponding to the network number “N1” from the address storage unit 131. Then, the CN communication unit 151a generates a packet in which the acquired HoA “192.168.1.0” is set as the transmission source address.

  The HA communication unit 151b is a module for realizing communication between the virtual mobile bodies MN1 to MN3 and the HA 20. Specifically, when the HA communication unit 151b receives an instruction from the information processing device 30 to perform communication between the predetermined virtual mobile units MN1 to MN3 and the HA 20, the predetermined virtual mobile unit MN1 to MN1. The network number of the virtual network in which MN3 is currently located is acquired from the current communication state storage unit 133. Subsequently, the HA communication unit 151b acquires the HoA corresponding to the network number acquired above from the address storage unit 131. Subsequently, the HA communication unit 151 b generates a location registration message including the acquired HoA, and outputs the generated location registration message to the emulation unit 153.

  In addition, when a location registration response message is transmitted from the HA 20 to the communication verification apparatus 100, the HA communication unit 151b sends the location registration response message to the I / F unit 120 and the emulation unit 153. And via the address filter unit 152. In addition, when an encapsulated packet is transmitted from the HA 20 to the communication verification apparatus 100, the HA communication unit 151b transmits the packet to the I / F unit 120, the emulation unit 153, and the address filter unit 152. And receive via.

  For example, it is assumed that the information processing apparatus 30 instructs the HA communication unit 151b to transmit a location registration message from the virtual mobile unit MN1 to the HA20. Here, it is assumed that the address storage unit 131 is in the state shown in FIG. In addition, the current communication state storage unit 133 is not in the state shown in FIG. 7, but “N2” is stored in the network number corresponding to the virtual mobile number “MN1”, and “J5” is stored in the state number. It shall be. In this case, the HA communication unit 151b acquires the network number “N2” of the virtual network where the virtual mobile unit MN1 is currently located from the current communication state storage unit 133. Subsequently, the HA communication unit 151 b acquires HoA “192.168.2.0” corresponding to the network number “N2” from the address storage unit 131. Then, the HA communication unit 151b generates a location registration message including the acquired HoA “192.168.2.0”.

  The address filter unit 152 is a processing unit that discards packets received from the CN 10 or the HA 20 and location registration response messages other than the packets addressed to the virtual mobile units MN1 to MN3 generated by the communication verification device 100.

  Specifically, the address filter unit 152 determines whether or not the destination address set in the packet received from the CN 10 or the HA 20 is included in the HoA stored in the address storage unit 131. When the destination address set in the received packet or the like is included in the HoA of the address storage unit 131, the address filter unit 152 outputs the packet or the like to the communication module 151. On the other hand, when the destination address set in the received packet or the like is not included in the HoA of the address storage unit 131, the address filter unit 152 discards the packet or the like.

  The emulation unit 153 is a processing unit that generates various errors in communication performed between the virtual moving body and the CN 10 or the HA 20 based on the communication state of the virtual area where the virtual moving body is located.

  Specifically, when receiving a packet or a location registration message from the communication module 151, the emulator unit 153 stores the current communication state storage state number of the virtual area where the virtual mobile body that is the transmission source of the packet is currently located. Acquired from the unit 133. Then, an error content such as a delay time corresponding to the acquired state number is acquired from the error content storage unit 132, and an error is generated in the packet received from the communication module 151 according to the acquired error content.

  Further, when the emulating unit 153 receives a predetermined packet or a location registration response message from the CN 10 or the HA 20 via the I / F unit 120, the emulating unit 153 is a virtual area where the destination virtual moving body such as the packet is currently located Is acquired from the current communication state storage unit 133. Then, the error content corresponding to the acquired communication state is acquired from the error content storage unit 132, and the acquired error content is generated in the received packet or the like.

  For example, it is assumed that the information processing apparatus 30 instructs the virtual mobile unit MN1 to transmit a packet to the CN10. Here, it is assumed that the error content storage unit 132 is in the state shown in FIG. 6, and the current communication state storage unit 133 is in the state shown in FIG. In such a case, the CN communication unit 151a outputs a predetermined packet to the emulation unit 153.

  The emulation unit 153 that has received the packet from the CN communication unit 151a first acquires the state number “J1” from the current communication state storage unit 133 as the communication state of the virtual area where the virtual mobile unit MN1 is currently located. . Subsequently, the emulation unit 153 acquires the delay time “10 ms”, the loss rate “0%”, and the error rate “0%” corresponding to the state number “J1” from the error content storage unit 132. Subsequently, the emulation unit 153 waits for “10 ms”, and then transmits the packet received from the CN communication unit 151a to the CN 10. Here, since the loss rate is “0%” and the error rate is “0%”, the emulation unit 153 does not cause loss and error in the packet to be transmitted.

  For example, it is assumed that the information processing device 30 instructs the virtual mobile unit MN1 to transmit a location registration message to the HA 20. Here, it is assumed that the error content storage unit 132 is in the state shown in FIG. In addition, the current communication state storage unit 133 is not in the state shown in FIG. 7, but “N2” is stored in the network number corresponding to the virtual mobile number “MN1”, and “J5” is stored in the state number. It shall be. In such a case, the HA communication unit 151b outputs a predetermined location registration message to the emulation unit 153.

  Upon receiving the location registration message from the HA communication unit 151b, the emulation unit 153 first sets the state number “J5” from the current communication state storage unit 133 as the communication state of the virtual area where the virtual mobile unit MN1 is currently located. get. Subsequently, the emulation unit 153 acquires a delay time “70 ms”, a loss rate “5%”, and an error rate “5%” corresponding to the state number “J5” from the error content storage unit 132. Subsequently, the emulation unit 153 loses “5%” of the location registration message received from the HA communication unit 151b and garbles the data of “5%” in the location registration message. Then, after waiting for “70 ms”, the emulation unit 153 transmits a location registration message in which a loss and an error have occurred to the HA 20.

  For example, it is assumed that a packet addressed to the virtual mobile MN1 is received from the CN10. Here, it is assumed that the error content storage unit 132 is in the state shown in FIG. In addition, the current communication state storage unit 133 is not in the state shown in FIG. 7, but “N2” is stored in the network number corresponding to the virtual mobile number “MN1”, and “J5” is stored in the state number. It shall be.

  In such a case, the emulation unit 153 first acquires the state number “J5” from the current communication state storage unit 133 as the communication state corresponding to the virtual area where the virtual mobile unit MN1 is currently located. Subsequently, the emulation unit 153 acquires a delay time “70 ms”, a loss rate “5%”, and an error rate “5%” corresponding to the state number “J5” from the error content storage unit 132. Subsequently, the emulating unit 153 causes “5%” of the packet received from the CN 10 to be lost and “5%” of the packet received from the CN 10 to be garbled. Then, after waiting for “70 ms”, the emulation unit 153 transmits the packet that caused the loss and the error to the address filter unit 152.

  The log output unit 154 is a processing unit that outputs a communication state between the virtual terminal apparatuses MN1 to MN3 and the CN 10 or the HA 20 to a predetermined file. For example, the log output unit 154 outputs the loss rate and error rate of packets received from the CN 10 and the HA 20 and the location registration response message to a predetermined file. For example, the log output unit 154 outputs the time from when a predetermined packet or the like is transmitted to the CN 10 or the HA 20 until the acknowledgment is returned to a file.

  Next, location registration processing by the communication verification device 100 and the HA 20 will be described. FIG. 8 is a sequence diagram illustrating a location registration processing procedure performed by the communication verification apparatus 100 and the HA 20. Here, a location registration processing procedure when the virtual mobile unit MN1 transmits a location registration message to the HA 20 will be described.

  As shown in the figure, when the information processing device 30 instructs the virtual mobile unit MN1 to transmit a location registration message to the HA 20, the communication verification device 100 determines whether the virtual mobile unit MN1 is currently located. A location registration message including the HoA of the virtual network to which the area belongs is transmitted to the HA 20 (step S101).

  The HA 20 that has received the location registration message stores HoA and CoA (Care of Address) in association with each other in a predetermined storage unit, and then transmits a location registration response message to the communication verification apparatus 100 (step S102). .

  Thereafter, when the CN 10 transmits a packet to the virtual mobile unit MN1 (step S103), the HA 20 captures the packet and encapsulates the packet, and then transmits the encapsulated packet to the communication verification apparatus 100 (step S104). ).

  Next, the initial information setting process by the initial setting unit 141 shown in FIG. 3 will be described. FIG. 9 is a flowchart showing an initial information setting process procedure by the initial setting unit 141 shown in FIG. As illustrated in FIG. 9, when the scenario 31 is received from the information processing device 30 (Yes in step S201), the initial setting unit 141 of the communication verification device 100 sets the HoA of the virtual network defined in the scenario 31 as the address The setting is made in the storage unit 131 (step S202).

  Subsequently, the initial setting unit 141 sets an error content such as a delay time defined in the scenario 31 in the error content storage unit 132 (step S203). Subsequently, the initial setting unit 141 sets the communication state of the virtual area where the virtual mobile body defined in the scenario 31 is first located in the current communication state storage unit 133 (step S204).

  Next, the moving body moving process by the moving body moving unit 142 shown in FIG. 3 will be described. FIG. 10 is a flowchart showing a moving body moving process procedure by the moving body moving unit 142 shown in FIG. As shown in FIG. 10, when the moving condition defined in the scenario 31 is satisfied (Yes in step S301), the mobile unit 142 stores the current communication state based on the information defined in the scenario 31. The state number of the unit 133 is updated (step S302).

  At this time, when the virtual moving body is moved across the virtual network (Yes at Step S303), the moving body moving unit 142 sets the network number of the current communication state storage unit 133 to the virtual area to which the virtual moving body is moved. Update to the network number of the virtual network to which it belongs (step S304).

  Next, packet transmission processing by the communication unit 150 shown in FIG. 3 will be described. FIG. 11 is a flowchart illustrating a transmission processing procedure of a packet or the like by the communication unit 150 illustrated in FIG. Here, a transmission processing procedure when the virtual mobile body transmits a packet to the CN 10 will be described.

  As illustrated in FIG. 11, when the information processing apparatus 30 instructs to perform communication between a predetermined virtual mobile body and the CN 10 (Yes in step S401), the CN communication unit 151a of the communication unit 150 takes such a process. The network number of the virtual network where the predetermined virtual moving body is currently located is acquired from the current communication state storage unit 133 (step S402).

  Subsequently, the CN communication unit 151a acquires the HoA corresponding to the network number acquired in step S402 from the address storage unit 131 (step S403), and generates a packet in which the acquired HoA is set as a transmission source address. (Step S404).

  Subsequently, the emulation unit 153 acquires the state number of the virtual area where the predetermined virtual moving body is currently located from the current communication state storage unit 133 (step S405). Subsequently, the emulation unit 153 acquires the delay time, loss rate, and error rate corresponding to the acquired state number from the error content storage unit 132 (step S406).

  Subsequently, the emulation unit 153 generates a loss in the packet generated by the CN communication unit 151a according to the loss rate acquired from the error content storage unit 132 (step S407). Subsequently, the emulation unit 153 generates an error in the packet generated by the CN communication unit 151a according to the error rate acquired from the error content storage unit 132 (step S408). Then, after the delay time acquired from the error content storage unit 132 has elapsed (Yes in step S409), the emulation unit 153 transmits the packet that caused the error to the CN 10 via the I / F unit 120 ( Step S410).

  Next, reception processing of packets and the like by the communication unit 150 illustrated in FIG. 3 will be described. FIG. 12 is a flowchart illustrating a reception processing procedure of a packet or the like by the communication unit 150 illustrated in FIG. Here, the reception processing procedure when the communication verification apparatus 100 receives a predetermined packet from the CN 10 will be described.

  As illustrated in FIG. 12, when a packet is received from the CN 10 (Yes in step S501), the emulation unit 153 of the communication verification apparatus 100 determines that the destination virtual mobile body of the received packet is currently present from the current communication state storage unit 133. A state number corresponding to the virtual area located is acquired (step S502). Subsequently, the emulation unit 153 acquires the delay time, the loss rate, and the error rate corresponding to the state number acquired in step S502 from the error content storage unit 132 (step S503).

  Subsequently, the emulation unit 153 generates a loss in the packet received from the CN 10 according to the loss rate acquired from the error content storage unit 132 (step S504), and the CN 10 according to the error rate acquired from the error content storage unit 132 An error is generated in the packet received from (step S505). Subsequently, after the delay time acquired from the error content storage unit 132 has elapsed (Yes at Step S506), the emulation unit 153 outputs the packet that caused the loss and the error to the address filter unit 152 (Step S507). .

  The address filter unit 152 that has received the packet from the emulator unit 153 determines whether or not the destination address set in the packet is included in the HoA stored in the address storage unit 131. When the destination address set in the received packet is included in the HoA of the address storage unit 131 (Yes in step S508), the address filter unit 152 outputs the packet or the like to the communication module 151 (step S509). . On the other hand, when the destination address set in the received packet or the like is not included in the HoA of the address storage unit 131 (No in step S508), the address filter unit 152 discards the packet or the like (step S510).

  The CN communication unit 151a of the communication module 151 that has received the packet from the address filter unit 152 performs a predetermined reception process such as acquisition of user data included in the packet (step S511). Then, the log output unit 154 outputs the status of communication between the virtual mobile unit MN1 and the CN 10 to a predetermined file (step S512).

  As described above, the communication verification apparatus 100 according to the present embodiment generates the virtual networks N1 to N3 and the virtual mobile bodies MN1 to MN3 based on the scenario 31, and sets the virtual mobile bodies MN1 to MN3 to the virtual network. N1 to N3 are moved, and communication is performed between the virtual mobile unit and the CN 10 according to the communication state (delay time, loss rate, error rate, etc.) of the virtual area where the virtual mobile unit is located. It is possible to communicate with the CN 10 or the like depending on the communication state. That is, if the communication verification apparatus 100 according to the present embodiment is used, various errors are intentionally and easily generated without actually constructing a large-scale network or actually moving a mobile object. As a result, R & D and verification of mobile network-related devices can be performed in various environments.

  Moreover, since the communication verification apparatus 100 according to the present embodiment can generate a plurality of virtual networks N1 to N3, it actually constructs a large-scale network or actually moves a mobile object. Therefore, it is possible to easily construct an environment in which the IP address of a mobile unit is changed during communication or an environment in which a handover occurs, and in such an environment, research and development and verification of mobile network related devices can be performed. it can.

  In addition, the communication verification apparatus 100 according to the present embodiment can change the configuration of the virtual network, the error contents in each communication state, the configuration of the virtual mobile body, and the like by simply changing the information defined in the scenario 31. Can be changed.

  In the above-described embodiment, an example in which the communication verification device 100 transmits a packet to the CN 10 or a location registration message to the HA 20 according to an instruction from the information processing device 30 has been described. The verification apparatus 100 may transmit a packet to the CN 10 or a location registration message to the HA 20 periodically (for example, once per minute).

  In the above-described embodiment, an example in which the communication verification device 100 transmits a location registration message to the HA 20 in accordance with an instruction from the information processing device 30 has been described. When moving across the virtual area, a location registration message may be automatically transmitted to the HA 20. In such a case, the HA communication unit 151b of the communication verification device 100 monitors the current communication state storage unit 133 and transmits a location registration message to the HA 20 when the network number of the current communication state storage unit 133 is updated. .

  Further, in the above-described embodiment, an example in which the emulation unit 153 generates an error such as a delay time both at the time of transmission and reception of a packet has been described. However, the emulation unit 153 is only at the time of transmission. An error may be generated in the packet or the like, or an error may be generated in the packet or the like only at the time of reception.

  Further, the processing procedures, control procedures, specific names, information including various data and parameters shown in the above-mentioned documents and drawings 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 and integration of each device is not limited to the one shown in the figure, and all or a part thereof is functionally or physically distributed in arbitrary units according to various loads or usage conditions. Can be integrated and configured. Further, all or any part of each processing function performed in each device is realized by a CPU (Central Processing Unit) and a program analyzed and executed by the CPU, or hardware by wired logic. Can be realized as

  Further, the configuration of the communication verification apparatus 100 shown in FIG. 3 can be variously changed without departing from the gist. For example, the functions of the state verification unit 140 and the communication unit 150 of the communication verification device 100 can be implemented as software, and can be executed by a computer to realize the same function as the communication verification device 100. An example of a computer that executes a communication verification program 1071 in which the functions of the state setting unit 140 and the communication unit 150 are implemented as software will be described below.

  FIG. 13 is a functional block diagram showing a computer 1000 that executes the communication verification program 1071. The computer 1000 includes a CPU 1010 that executes various arithmetic processes, an input device 1020 that receives input of data from a user, a monitor 1030 that displays various information, a medium reading device 1040 that reads a program and the like from a recording medium, a network A network interface device 1050 for exchanging data with other computers via a network, a RAM (Random Access Memory) 1060 for temporarily storing various information, and a hard disk device 1070 are connected via a bus 1080. .

  The hard disk device 1070 corresponds to the communication verification program 1071 having the same functions as those of the state setting unit 140 and the communication unit 150 shown in FIG. 3 and various data stored in the storage unit 130 shown in FIG. The communication verification data 1072 and the scenario 31 shown in FIG. 3 are stored. Note that the communication verification data 1072 or the scenario 31 can be appropriately distributed and stored in another computer connected via a network.

  Then, the CPU 1010 reads out the communication verification program 1071 from the hard disk device 1070 and develops it in the RAM 1060, whereby the communication verification program 1071 functions as the communication verification process 1061. Then, the communication verification process 1061 expands the data read from the communication verification data 1072 and the scenario 31 as appropriate to the area allocated to itself on the RAM 1060, and executes various data processing based on the expanded data and the like. .

  Note that the communication verification program 1071 does not necessarily have to be stored in the hard disk device 1070, and the computer 1000 may read and execute this program stored in a storage medium such as a CD-ROM. . The computer 1000 stores the program in another computer (or server) connected to the computer 1000 via a public line, the Internet, a LAN (Local Area Network), a WAN (Wide Area Network), or the like. You may make it read and run a program from these.

  The following additional notes are further disclosed with respect to the embodiment including the above examples.

(Supplementary Note 1) A communication verification apparatus that is connected to a mobile network and allows communication between a virtual mobile body that is a virtual mobile body and a predetermined terminal device via the mobile network,
Occurs in the communication state in association with a state number for identifying a communication state corresponding to a virtual area that is a plurality of virtual areas in a virtual network that is a virtual network generated by the communication verification device Based on a scenario in which an error content and a moving condition for moving the virtual moving body to any one of a plurality of virtual areas in the virtual network are defined. Moving body moving means for moving to either
Communication means for generating an error content corresponding to a virtual area in which the virtual moving body moved by the moving body moving means is located, and performing communication between the virtual moving body and the terminal device. A communication verification device characterized by the above.

(Supplementary note 2) In the scenario, a home address of the virtual network is further defined in association with a network number for identifying a plurality of virtual networks,
The moving body moving means moves the virtual moving body to any one of a plurality of virtual areas belonging to the plurality of virtual networks,
The communication unit causes communication between the virtual mobile unit and the terminal device using a home address of a virtual network to which a virtual area where the virtual mobile unit moved by the mobile unit moves is located. The communication verification apparatus according to appendix 1, characterized by:

(Supplementary Note 3) The communication means may be configured such that the virtual moving body is different from the virtual network to which the current virtual area belongs from the virtual area where the virtual moving body is currently located by the moving body moving means. When moving to a new virtual area that is a virtual area belonging to a network, the packet including the home address of the virtual network to which the new virtual area belongs is transmitted from the virtual mobile unit to a home agent that is the terminal device. The communication verification apparatus according to Supplementary Note 2, which is a feature.

(Additional remark 4) The said communication means discards the said received packet when the destination address of the received packet which is a packet received from the said terminal device is not contained in the home address defined in the said scenario The communication verification device according to appendix 2 or 3, further comprising:

(Additional remark 5) In the scenario, as the error content, a loss rate and an error rate of a packet to be transmitted / received to / from the terminal device, and a delay time generated when the packet is transmitted / received are defined,
The communication means generates a loss and an error in a transmission packet according to a loss rate and an error rate defined in the scenario when transmitting a packet from the virtual mobile body to the terminal device, and the delay time When the virtual mobile unit receives a packet from the terminal device, a loss and an error are generated in the received packet according to the loss rate and error rate defined in the scenario. The communication verification device according to any one of appendices 1 to 4, wherein reception processing is performed on the assumption that the received packet is received after the delay time has elapsed.

(Additional remark 6) The said communication means is further provided with the log output means which outputs the condition of communication between the said terminal devices to a predetermined file, The additional description 1-5 characterized by the above-mentioned Communication verification device.

(Appendix 7) Address storage means for storing the home address in association with the network number;
Current communication state storage means for storing a state number of a communication state corresponding to the current virtual area in association with the network number;
An error content storage means for storing the error content in association with the state number;
The address filter means discards the received packet when the destination address of the received packet is not included in the home address stored in the address storage means;
The communication unit obtains an error content corresponding to a state number stored in the current communication state storage unit from the error content storage unit, generates an error according to the error content, and the virtual moving body and the virtual mobile unit The communication verification device according to any one of appendices 1 to 6, wherein communication is performed with a terminal device.

(Supplementary note 8) Communication verification for performing communication between a virtual mobile body, which is a virtual mobile body generated by a communication verification apparatus connected to the mobile network, and a predetermined terminal device via the mobile network A method,
The communication verification device is
Occurs in the communication state in association with a state number for identifying a communication state corresponding to a virtual area that is a plurality of virtual areas in a virtual network that is a virtual network generated by the communication verification device Based on a scenario in which an error content and a moving condition for moving the virtual moving body to any one of a plurality of virtual areas in the virtual network are defined. A moving body moving step for moving to either
A communication step of generating an error content corresponding to a virtual area in which the virtual moving body moved by the moving body moving step is located, and performing communication between the virtual moving body and the terminal device. A communication verification method characterized by the above.

(Additional remark 9) Communication verification which performs communication between the virtual mobile body which is a virtual mobile body produced | generated by the communication verification apparatus connected to this mobile network, and a predetermined | prescribed terminal device via a mobile network A communication verification program for causing a computer to execute the method,
Occurs in the communication state in association with a state number for identifying a communication state corresponding to a virtual area that is a plurality of virtual areas in a virtual network that is a virtual network generated by the communication verification device. Based on a scenario in which an error content and a moving condition for moving the virtual moving body to any of a plurality of virtual areas in the virtual network are defined, the virtual moving body is moved to any of the plurality of virtual areas. Moving body moving procedure to move
A communication procedure for causing a computer to perform communication between the virtual moving body by generating an error content corresponding to a virtual area where the virtual moving body moved by the moving body moving procedure is located is executed. The communication verification program characterized by making it carry out.

It is a figure which shows the structural example of the mobile network to which a communication verification apparatus is applied. It is a figure which shows an example of the virtual network which a communication verification apparatus produces | generates. It is a block diagram which shows the structure of a communication verification apparatus. It is a figure which shows an example of a scenario. It is a figure which shows an example of an address memory | storage part. It is a figure which shows an example of an error content memory | storage part. It is a figure which shows an example of the present communication state memory | storage part. It is a sequence diagram which shows the location registration processing procedure by a communication verification apparatus and HA. It is a flowchart which shows the initial information setting process procedure by the initial setting part shown in FIG. It is a flowchart which shows the mobile body movement process procedure by the mobile body moving part shown in FIG. It is a flowchart which shows the transmission processing procedure of the packet etc. by the communication part shown in FIG. It is a flowchart which shows the reception processing procedure of the packet etc. by the communication part shown in FIG. It is a functional block diagram which shows the computer which performs a communication verification program.

Explanation of symbols

1 Mobile network 10 CN
20 HA
DESCRIPTION OF SYMBOLS 30 Information processing apparatus 31 Scenario 100 Communication verification apparatus 110 I / F part 120 I / F part 130 Storage part 131 Address storage part 132 Error content storage part 133 Current communication state storage part 140 Status setting part 141 Initial setting part 142 Mobile body movement Unit 150 communication unit 151 communication module 151a CN communication unit 151b HA communication unit 152 address filter unit 153 emulation unit 154 log output unit 1000 computer 1010 CPU
1020 Input device 1030 Monitor 1040 Media reader 1050 Network interface device 1060 RAM
1061 Communication verification process 1070 Hard disk device 1071 Communication verification program 1072 Communication verification data 1080 Bus

Claims (8)

A communication verification device that is connected to a mobile network and allows communication between a virtual mobile body that is a virtual mobile body and a predetermined terminal device via the mobile network,
Occurs in the communication state in association with a state number for identifying a communication state corresponding to a virtual area that is a plurality of virtual areas in a virtual network that is a virtual network generated by the communication verification device Error status, a movement condition for moving the virtual mobile body to any one of a plurality of virtual areas in the virtual network, and a home of the virtual network in association with a network number for identifying the plurality of virtual networks A moving body moving means for moving the virtual moving body to any of the plurality of virtual areas belonging to the plurality of virtual networks based on a scenario in which an address is defined;
An error content corresponding to a virtual area in which the virtual moving body moved by the moving body moving unit is located is generated, and a home address of a virtual network to which the virtual area belongs is set between the virtual moving body and the terminal device. communication verification apparatus characterized by comprising a communication unit to perform communication using. The communication means uses the moving body moving means to move the virtual moving body from a current virtual area which is a virtual area where the virtual moving body is currently located to a virtual network belonging to a virtual network different from the virtual network to which the current virtual area belongs. If it is a mobile to a new virtual area in the area, according to claim 1, a packet containing the home address of the new virtual area belongs virtual network, characterized in that to transmit to the mobile virtual or Raho over arm agent The communication verification apparatus described in 1. The communication unit further includes an address filter unit that discards the received packet when a destination address of the received packet that is a packet received from the terminal device is not included in a home address defined in the scenario. The communication verification apparatus according to claim 1 or 2 , wherein In the scenario, as the error content, a loss rate and an error rate of a packet to be transmitted / received to / from the terminal device, and a delay time generated when the packet is transmitted / received are defined,
The communication means generates a loss and an error in a transmission packet according to a loss rate and an error rate defined in the scenario when transmitting a packet from the virtual mobile body to the terminal device, and the delay time When the virtual mobile unit receives a packet from the terminal device, a loss and an error are generated in the received packet according to the loss rate and error rate defined in the scenario. the communication verification apparatus according to any one of claims 1-3, characterized in that to perform the reception processing as that received the received packet after the delay time has elapsed. The communication verification apparatus according to any one of claims 1 to 4 , wherein the communication unit further includes a log output unit that outputs a state of communication with the terminal device to a predetermined file. . A communication verification device that is connected to a mobile network and allows communication between a virtual mobile body that is a virtual mobile body and a predetermined terminal device via the mobile network,
Occurs in the communication state in association with a state number for identifying a communication state corresponding to a virtual area that is a plurality of virtual areas in a virtual network that is a virtual network generated by the communication verification device The error rate and the error rate of the packet transmitted / received to / from the terminal device as the error content to be transmitted, the delay time generated when transmitting / receiving the packet, and the virtual mobile unit to any one of a plurality of virtual areas in the virtual network A moving body moving means for moving the virtual moving body to any of the plurality of virtual areas based on a scenario in which a moving condition for moving is defined;
When the error content corresponding to the virtual area in which the virtual moving body moved by the moving body moving unit is located is acquired from the scenario and a packet is transmitted from the virtual moving body to the terminal device, When a loss and an error are generated in a transmission packet according to the defined loss rate and error rate, the transmission packet is transmitted after the delay time has elapsed, and the virtual mobile unit receives the packet from the terminal device Communication means for generating a loss and an error in a received packet according to the loss rate and error rate defined in the scenario, and performing reception processing as if the received packet was received after the delay time had elapsed. A communication verification apparatus characterized by that. A communication verification method for performing communication between a virtual mobile body, which is a virtual mobile body generated by a communication verification apparatus connected to the mobile network, and a predetermined terminal device via a mobile network ,
The communication verification device is
Occurs in the communication state in association with a state number for identifying a communication state corresponding to a virtual area that is a plurality of virtual areas in a virtual network that is a virtual network generated by the communication verification device Error status, a movement condition for moving the virtual mobile body to any one of a plurality of virtual areas in the virtual network, and a home of the virtual network in association with a network number for identifying the plurality of virtual networks A moving body moving step of moving the virtual moving body to any of the plurality of virtual areas belonging to the plurality of virtual networks based on a scenario in which an address is defined;
An error content corresponding to a virtual area in which the virtual moving body moved by the moving body moving step is generated is generated, and a home address of a virtual network to which the virtual area belongs is set between the virtual moving body and the terminal device. The communication verification method characterized by including the communication process which performs the used communication. A communication verification method for causing a computer to perform communication between a virtual mobile body, which is a virtual mobile body generated by a communication verification apparatus connected to the mobile network, and a predetermined terminal device via the mobile network A communication verification program to be executed,
Occurs in the communication state in association with a state number for identifying a communication state corresponding to a virtual area that is a plurality of virtual areas in a virtual network that is a virtual network generated by the communication verification device. Error contents, movement conditions for moving the virtual mobile body to one of a plurality of virtual areas in the virtual network, and a home address of the virtual network in association with a network number for identifying the plurality of virtual networks And a moving body moving procedure for moving the virtual moving body to any one of the plurality of virtual areas belonging to the plurality of virtual networks , based on a scenario defined by:
The error content corresponding to the virtual area where the virtual mobile body moved by the mobile body moving procedure is located is generated, and the home address of the virtual network to which the virtual area belongs is set between the virtual mobile body and the terminal device. communication verification program, characterized in that to execute a communication procedure in a computer to perform communication using.

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