JP2018113599A - Communication processing system, communication monitoring device, communication monitoring method and communication monitoring program - Google Patents

Abstract

PROBLEM TO BE SOLVED: To grasp a communication state in a system without using a configuration for generating a packet for delay measurement that is not a real packet, in a communication processing system in which communications are performed while rewriting contents of communication data by multiple devices.SOLUTION: A communication processing system 1 comprises: a starting point device 11, an ending point device 12 and a relay device 13 which transmit or receive a communication packet; and a communication monitoring device 14. The starting point device 11 includes a data identifier application part 112 which applies a data identifier to a data part of a generated communication packet. Each of the devices includes: a reference time notification part for notifying a user of at least one of a reception time in which a communication packet is referenced in a process of reception processing and a transmission time in which a communication packet is referenced in a process of transmission processing, and the data identifier; and a processing part which performs data processing on data in any other region than a region of the data identifier in the communication packet.SELECTED DRAWING: Figure 1

Description

  The present invention relates to a communication processing system, a communication monitoring device, a communication monitoring method, and a communication monitoring program.

  A communication monitoring device is used to monitor a communication state in a system that performs data communication with a plurality of devices.

  For example, in the network analysis system disclosed in Patent Document 1, each probe device sends information about a pair of a packet arrival time and a hash value of the packet to the collector device at regular intervals. . The collector device stores a set of a probe device (measurement port) identifier, a hash value, and an arrival time. The network analysis system obtains the delay time by subtracting the arrival time at the first probe device from the arrival time at each probe device.

  In the relay device disclosed in Patent Document 2, the packet relay unit sets the path of the delay measurement packet and transfers it, and the delay measurement control unit gives the time when the delay measurement packet is generated and transmitted. A delay measurement packet is transmitted to the packet relay unit. The delay measurement control unit adds the time at which the delay measurement packet is received from the packet relay unit to the delay measurement packet, and measures the delay from the transmission time and the reception time. The delay measurement control unit sends an alarm to the network administrator when the measurement delay value exceeds the delay threshold value.

  As another related technique, Patent Document 3 discloses a data format including various IDs (IDentification) in a communication control system that controls a network-based robot existing in an infrastructure based on URC (Ubiquitous Robotic Companion). This data format includes a protocol ID field for approving interfacing between the robot, server and client, a session data ID field for distinguishing currently connected sessions, and any one of the three parties. And a profile data ID field for classifying the profile to be performed.

JP 2009-075205 A JP 2013-197643 A Special table 2008-529324 gazette

  In the configuration disclosed in Patent Document 1, since a hash value is used to identify the same packet in each section, each computer rewrites the contents of the packet and performs data communication with another computer. It is difficult to grasp the time transition of one piece of data.

  In the configuration disclosed in Patent Document 2, the packet relay unit sets the path of the delay measurement packet and transfers the packet, and the delay measurement control unit assigns the time when the delay measurement packet is generated and transmitted, and packet relay It is necessary to use a configuration for generating a delay measurement packet that is not actual data.

  Patent Document 3 discloses a technique for controlling a network-based robot using a data format including a session data ID field for distinguishing currently connected sessions and a profile data ID field for distinguishing profiles. To do. However, Patent Document 3 does not disclose a technique for grasping at what time transition one piece of data is communicated.

  In the communication processing system in which communication is performed while the contents of communication data are rewritten by a plurality of devices, the present invention grasps the communication state in the system without using a configuration for generating a delay measurement packet that is not actual data. The main object of the present invention is to provide a communication processing system, a communication monitoring apparatus, a communication monitoring method, and a communication monitoring program.

  A communication processing system according to one aspect of the present invention is a communication processing system including a plurality of monitoring target devices that transmit or receive communication packets and a communication monitoring device, and generates a communication packet among the plurality of monitoring target devices. The monitoring target device includes a data identifier assigning unit that assigns a data identifier to the data portion of the generated communication packet, and the plurality of monitoring target devices receive reception times referred to in the process of receiving the communication packet. And a reference time notification unit that notifies at least one of the transmission times referred to in the course of the transmission processing of the communication packet and the data identifier, and data processing for data in an area other than the data identifier area of the communication data A processing unit that performs the processing in the plurality of devices to be monitored for each data identifier Monitoring the time required for communication between multiple monitored devices.

  A communication monitoring apparatus according to an aspect of the present invention is a communication monitoring apparatus according to an aspect of the present invention, wherein a reception time at which a communication packet is referred to in a reception process in each of the monitoring target apparatuses and a transmission referred to in the transmission process of the communication packet. A reference time receiving unit that receives at least one of the times and a data identifier given to a data part of the communication packet by a monitoring target device that generates the communication packet among the plurality of monitoring target devices; the reception time; and Based on at least one of the transmission times and the data identifier, a processing time required for processing in the plurality of monitoring target devices and a communication time required for communication between the plurality of monitoring target devices are calculated for each data identifier. And a display unit that displays the calculated processing time and communication time for each data identifier.

  The communication monitoring method according to one aspect of the present invention includes at least one of a reception time when a communication packet is referred to in the process of reception processing and a transmission time referred to during the process of transmission of the communication packet in a plurality of monitoring target devices. Receiving a data identifier assigned to a data portion of the communication packet by a monitoring target device that generates the communication packet among the plurality of monitoring target devices, and at least one of the reception time and the transmission time and the data identifier And a time calculation unit that calculates a processing time required for processing in the plurality of monitoring target devices and a communication time required for communication between the plurality of monitoring target devices for each data identifier, The processing time and the communication time are displayed for each data identifier.

  According to another aspect of the present invention, there is provided a communication monitoring program that allows a computer to receive, from a plurality of monitoring target devices, a reception time when a communication packet is referenced in each monitoring target device and a process of transmitting the communication packet. Processing for receiving at least one of the referred transmission times and a data identifier given to a data portion of the communication packet by the monitoring target device that generates the communication packet among the plurality of monitoring target devices; and the reception time And a processing time required for processing in the plurality of monitoring target devices and a communication time required for communication between the plurality of monitoring target devices for each data identifier based on at least one of the transmission times and the data identifier. And a process of displaying the calculated processing time and the communication time for each data identifier. To.

  According to the present invention, in a communication processing system in which communication is performed while the contents of communication data are rewritten by a plurality of devices, a communication state in the system is not used without using a configuration for generating a packet for delay measurement that is not actual data. Can be grasped.

FIG. 1 is a block diagram showing the configuration of the first embodiment. FIG. 2 is a diagram showing the configuration of the communication data in FIG. FIG. 3 is a diagram illustrating an example of a screen displayed by the communication monitoring apparatus of FIG. FIG. 4 is a flowchart showing the operation of the starting device of FIG. FIG. 5 is a flowchart showing the operation of the relay apparatus of FIG. FIG. 6 is a flowchart showing the operation of the end point device of FIG. FIG. 7 is a flowchart showing the operation of the communication monitoring apparatus of FIG. FIG. 8 is a block diagram showing the configuration of the second embodiment. FIG. 9 is a diagram illustrating an example of a screen displayed by the communication monitoring apparatus in FIG. 10 is a diagram illustrating an example of the configuration of the information processing apparatus that implements the starting device, the ending device, the relay device, and the transmission station, the receiving station, and each subsystem of FIG. 8.

  Hereinafter, a first embodiment will be described with reference to the drawings.

  The communication processing system 1 according to the present embodiment includes a start device 11 that generates communication data, an end device 12 that finally transmits communication data to the outside of the system, and a relay device 13 that relays data communication between the start device and the end device. And a plurality of devices to be monitored. Further, the communication processing system 1 according to the present embodiment collects at least one of the transmission time and the reception time of communication data from these monitoring target devices, and determines the communication time between the monitoring target devices and the processing time in each monitoring target device. A communication monitoring device 14 for monitoring is provided.

  In addition, each component of 1st Embodiment and each embodiment mentioned later has shown the block of the functional unit. A part or all of the starting point device 11, the ending point device 12, the relay device 13, the communication monitoring device 14, and the transmitting station, the receiving station, and each subsystem of the embodiments described later are as shown in FIG. You may implement | achieve by arbitrary combinations of the information processing apparatus 50 and a program. The information processing apparatus 50 includes the following configuration as an example.

CPU (Central Processing Unit) 51
・ ROM (Read Only Memory) 52
-RAM (Random Access Memory) 53
A program 54 loaded into the RAM 53
A storage device 55 for storing the program 54
A drive device 57 that reads and writes the recording medium 56
A communication interface 58 connected to the communication network 59
-Input / output interface 60 for data input / output
・ Bus 61 connecting each component
The starting point device 11, the ending point device 12, the relay device 13, the communication monitoring device 14, and the transmitting station, the receiving station, and each subsystem of each embodiment described later, the CPU 51 has a program 54 that realizes these functions. Realized by acquiring and executing. For example, the program 54 that realizes the function of each component of each device is stored in advance in the storage device 55, the ROM 52, or the RAM 53, and is read by the CPU 51 as necessary.

  The program 54 may be supplied to the CPU 51 via the communication network 59, or may be stored in the recording medium 56 in advance, and the drive device 57 may read the program and supply it to the CPU 51.

  There are various modified examples of the starting point device 11, the end point device 12, the relay device 13, the communication monitoring device 14, and the transmission station, receiving station, and each subsystem implementation method of each embodiment described later in the present embodiment. For example, each constituent element of the present embodiment and each of the embodiments described later may be realized by any combination of a separate information processing apparatus and program for each constituent element. In addition, a plurality of components included in each device may be realized by an arbitrary combination of one information processing device and a program.

  In addition, a part or all of the start device 11, the end device 12, the relay device 13, the communication monitoring device 14, and the transmission station, the reception station, and each subsystem of each embodiment described later may be other general-purpose or It is realized by a dedicated circuit (circuitry), a processor, or a combination thereof. These may be configured by a single chip or may be configured by a plurality of chips connected via a bus. A part or all of the starting point device 11, the ending point device 12, the relay device 13, the communication monitoring device 14, and the transmitting station, the receiving station, and each subsystem of each embodiment described later are the circuit and the program described above. It may be realized by a combination.

  A part or all of a starting point device 11, an ending point device 12, a relay device 13, a communication monitoring device 14, and a transmitting station, a receiving station, and each subsystem of each embodiment described later are a plurality of information processing devices and circuits. When realized by the above, a plurality of information processing devices, circuits, and the like may be centrally arranged or distributedly arranged. For example, the information processing apparatus, the circuit, and the like may be realized as a form in which each is connected via a communication network.

  Returning to FIG. 1, the first embodiment will be described. The originating device 11 includes a processing unit 111, a data identifier assigning unit 112, and a reference time notification unit 113. The processing unit 111 generates communication data and stores it in a TCP (Transmission Control Protocol) packet or a UDP (User Datagram Protocol) packet. The data identifier assigning unit 112 manages a unique identifier assigned to communication data, and assigns a data identifier to the TCP (or UDP) data part when storing the communication data in a TCP (or UDP) packet.

  FIG. 2 is a diagram illustrating an example of a configuration of communication data. As shown in FIG. 2, the head portion of the communication data is a TCP (or UDP) header region, and the subsequent portion is a TCP (or UDP) data portion region. (Or UDP) Immediately after the packet header is a data identifier area. The processing unit 111 writes data in an area other than the data identifier area of the communication data. The data identifier assigning unit 112 assigns a data identifier immediately after the TCP (or UDP) packet header, which is the head of the data part when the processing unit 111 stores communication data in a TCP (or UDP) packet. This data identifier must be unique to the communication data, but may be reused if sufficient time can be secured to avoid duplication.

  The processing unit 111 performs starting point processing including processing for storing communication data in a TCP (or UDP) packet. When the processing unit 111 completes the starting point processing and the data identifier assigning unit 112 assigns the data identifier immediately after the TCP (or UDP) packet header, the processing unit 111 sets the address (address) of the relay device 13 that is the transmission destination, and the relay device The communication data is transmitted to the relay apparatus 13 via the network by performing a transmission process such as securing the communication path with the transmission 13.

  In addition, the reference time notification unit 113 refers to the TCP (or UDP) packet in the course of the transmission processing performed by the processing unit 111, and identifies the acquisition of the data identifier, the reference time, and transmission / reception. The reference time notification unit 113 extracts the data identifier from the communication data, specifies whether the data is transmitted from the originating device 11 or received by the originating device 11, and refers to the communication data based on the system clock. Specify the time. The reference time notifying unit 113 transmits the data identifier obtained by referring to the communication data, the transmission / reception, and the reference time together with the identifier of the originating device 11 to the communication monitoring device 14.

  The reference time notification unit 113 operates in the second layer or the third layer of the OSI reference model of the originating device 11. The OSI reference model is a function that communication devices should have based on the network structure design policy “OSI” (Open Systems Interconnection) established by the International Organization for Standardization (ISO). Is a model in which is divided into a hierarchical structure.

  The OSI reference model divides communication functions into seven layers and defines standard function modules for each layer. The first layer (physical layer) is responsible for electrical conversion and mechanical work for sending data to the communication line. The second layer (data link layer) secures a physical communication path with the communication partner and performs error detection of data flowing through the communication path. The third layer (network layer) selects a communication path for delivering data to the other party and manages addresses (addresses) in the communication path. The fourth layer (transport layer) performs data compression, error correction, retransmission control, etc. for reliably and efficiently delivering data to the other party. The fifth layer (session layer) establishes and releases a virtual route (connection) for communication programs to exchange data. The sixth layer (presentation layer) converts the data received from the fifth layer into a format that is easy for the user to understand, and converts the data sent from the seventh layer into a format suitable for communication. The seventh layer (application layer) provides various services using data communication to humans and other programs.

  As illustrated in FIG. 1, the relay device 13 includes a processing unit 131 and a reference time notification unit 132. Unlike the originating device 11, the relay device 13 does not include a data identifier assigning unit. The processing unit 131 performs data processing on data in an area other than the data identifier area of the communication data shown in FIG. The processing unit 131 may rewrite data in an area other than the data identifier area, but does not rewrite the data identifier area. The processing unit 131 performs reception processing for receiving communication data. The reference time notification unit 132 operates in the second layer or the third layer of the OSI reference model, similarly to the reference time notification unit 113 of the originating device 11. The reference time notification unit 132 obtains a data identifier by referring to the communication data in the course of the reception process of the communication data, specifies the transmission / reception, specifies the reference time based on the system clock, It transmits to the communication monitoring apparatus 14 with an identifier.

  In addition, when the processing unit 131 performs data processing on data in an area other than the data identifier area of the communication data, the processing unit 131 sets the address (address) of the relay device 13 or the end device 12 that is the transmission destination, and sets the communication path. A transmission process such as securing and transmitting is performed. The reference time notification unit 132 refers to the communication data in the course of performing the transmission process. The reference time notification unit 132 extracts a data identifier from the communication data, and specifies the reference time and the transmission / reception. The reference time notifying unit 132 adds the identifier of the relay device 13 to the reference time, in addition to the data identifier and transmission / reception obtained by referring to the communication data, and transmits it to the communication monitoring device 14.

  As illustrated in FIG. 1, the end point device 12 includes a processing unit 121 that performs end point processing including output processing outside the system, and a reference time notification unit 122. Unlike the relay device 13, the end device 12 does not include a data identifier assigning unit, unlike the start device 11.

  The reference time notification unit 122 operates in the second layer or the third layer of the OSI reference model of the end point device 12. The reference time notification unit 122 refers to the communication data in the process of receiving the communication data received from the relay device 13, acquires the data identifier, and specifies the reference time and the transmission / reception. The reference time notification unit 122 transmits the data identifier, the transmission / reception, and the reference time together with the identifier of the reference time notification unit 122 to the communication monitoring device 14. The processing unit 121 performs end point processing including output processing outside the system for data in an area other than the data identifier area of the received communication data. When output from the end point device 12 to the outside of the system, the reference time notification unit 122 acquires a data identifier in the course of the output process, and specifies the reference time and the transmission / reception. The reference time notification unit 122 transmits the data identifier, the transmission / reception, and the reference time together with the identifier of the reference time notification unit 122 to the communication monitoring device 14.

  The communication monitoring device 14 collects the reception time, transmission time, and the like at each device in a series of communication, as a result, starting with the output from the start device 11 and ending with the output from the end device 12 to the outside of the system. Based on the data identifier, the communication monitoring device 14 sorts communication information up to the output from the end point device 12 in order of time, starting from the output from the start point device 11. If the times are the same, the communication information is organized according to the order of transmission on the communication path. The communication monitoring device 14 includes a reference time reception unit 141, a time calculation unit 142, and a display unit 143. The reference time receiving unit 141 determines whether at least one of the reception time and the transmission time of communication data from each reference time notification unit 113, 122, 132, the data identifier, and the transmission / reception, the start device 11, the end device 12, and the relay device Received with 13 identifiers. The time calculation unit 142 performs processing in the start device 11, the end device 12, and the relay device 13 for each data identifier from the reception time and transmission time of the communication data of the start device 11, the end device 12, and the relay device 13 for each data identifier. The time and the communication time required for communication between them are calculated. The display unit 143 displays the calculated processing time and communication time on the screen.

  FIG. 3 is a diagram illustrating an example of a screen displayed by the communication monitoring apparatus. As shown in FIG. 3, for example, the communication monitoring device 14 displays the devices on the communication path in advance in the order of transmission on the screen, and receives the reception time and transmission time of each device for each data identifier as a result of organizing the communication information. Is displayed. In FIG. 3, the data identifier AAAAA data has a transmission time of 01:00:02 at the originating device, a reception time of 01:00:03, and a transmission time of 01:00:05 at the relay device. The reception time at the end device is 01:00:06, and the transmission time is 01:00:08.

  In this case, as shown in FIG. 3, the communication monitoring device 14 includes processing time (difference between reception time and transmission time) in each device, network transmission time between devices (transmission time of the transmission side device and reception side device). Difference in reception time). For example, in the data example of the above data identifier AAAAA, as shown in FIG. 3, the communication time between the originating device and the relay device is the difference between the reception time of the relay device and the transmission time of the origin device 0:00 : 01 is displayed, and 00:00:02, which is the difference between the reception time and the transmission time, is displayed as the processing time in the relay apparatus. Also, the communication time between the relay device and the end device is displayed as 00:00:01 which is the difference between the reception time of the end device and the transmission time of the relay device, and the reception time as the processing time in the end device. 00:00:02, which is the difference in transmission time, is displayed.

  In addition, the communication monitoring device 14 is configured such that the first threshold value regarding the processing time in the device (from input to output to the device) and the communication time between devices (from output from one device to input to the next device) A second threshold value relating to these fluctuations is stored in advance, and if there is an aggregate result that exceeds these threshold values, a warning or warning may be issued to the operator with a display or sound. When the display unit 143 holds, for example, 00:00:03 as a processing time threshold in the relay device, the display unit 143 displays the processing time in the relay device with the data identifier AAAAB and the relay device with the data identifier AAAAC as shown in FIG. Since the processing time at the time exceeds the threshold, a specific pattern or background color that calls attention to the background of the display value may be displayed.

  Next, the operation of this embodiment will be described. First, the operation of the starting device in FIG. 1 will be described. FIG. 4 is a flowchart showing the operation of the starting device of FIG. First, the processing unit 111 generates communication data and stores it in a TCP (or UDP) packet (step S1). At this time, the processing unit 111 writes data in an area other than the data identifier area of the data part of the communication data. Next, the data identifier assigning unit 112 assigns a data identifier to the TCP (or UDP) data part (step S2). The reference time notifying unit 113 refers to the communication data in the process of completing the starting point processing and performing the transmission processing, and performs communication based on the acquisition of the data identifier, the reference time, transmission / reception, and the system clock. The time when the data is referred to is specified (step S3). The reference time notification unit 113 transmits the data identifier obtained by referring to the communication data, the reference time, and the reference time together with the identifier of the originating device 11 to the communication monitoring device 14 (step S4). The processing unit 111 transmits the communication data to the relay device 13 via the network (step S5).

  Next, the operation of the relay apparatus in FIG. 1 will be described. FIG. 5 is a flowchart showing the operation of the relay apparatus of FIG. First, in the process of receiving communication data received by the relay device 13, the reference time notification unit 132 acquires the data identifier by referring to the communication data in the same manner as the reference time notification unit 113 of the originating device 11, and is reception. Is identified. Further, the reference time notification unit 132 specifies the reception time referred to based on the system clock (step S6). The reference time notification unit 113 transmits the data identifier, reception, and reception time obtained by referring to the communication data to the communication monitoring device 14 together with the identifier of the relay device 13 (step S7). When the communication data received by the relay device 13 arrives, the processing unit performs data processing as a relay device on data in a region other than the data identifier region of the communication data shown in FIG. 2 (step S8). The processing unit 131 may rewrite data in an area other than the data identifier area.

  In the process in which the processing unit 131 completes the data processing as the relay device and performs the transmission processing of the communication data, the reference time notification unit 132 refers to the communication data, extracts the data identifier, and specifies the transmission / reception and the reference time (Step S9). The reference time notification unit 113 adds the identifier of the reference time notification unit 132 of the relay device 13 to the data identifier, the transmission / reception, and the reference time obtained by referring to the communication data, and transmits to the communication monitoring device 14 ( Step S10). The processing unit 131 transmits the communication data to the relay device 13 via the network (step S11).

  Next, the operation of the end point device in FIG. 1 will be described. FIG. 6 is a flowchart showing the operation of the end point device of FIG. First, in the process of reception processing in which communication data received from the relay device 13 arrives at the processing unit 121, the reference time notification unit 122 performs communication in the same manner as the reference time notification unit 113 of the originating device 11 and the reference time notification unit 132 of the relay device 13. The data identifier is obtained by referring to the data, the transmission / reception is specified, and the reference time is specified based on the system clock (step S12). The reference time notification unit 122 transmits the data identifier obtained by referring to the communication data, the transmission / reception, and the reference time together with the identifier of the end point device 12 to the communication monitoring device 14 (step S13). When the communication data received from the relay device 13 arrives, the processing unit 121 performs data processing as end point processing on data in a region other than the data identifier region of the communication data packet shown in FIG. 2 (step S14).

  Next, the operation of the communication monitoring apparatus in FIG. 1 will be described. FIG. 7 is a flowchart showing the operation of the communication monitoring apparatus of FIG. First, the communication monitoring device 14 determines whether at least one of the reception time and transmission time of communication data from each of the reference time notification units 113, 122, and 132, the data identifier, and the transmission / reception, the start device 11, the end device 12, and the relay device. It is received together with the identifier of 13 (step S15). The time calculation unit 142 performs processing in the start device 11, the end device 12, and the relay device 13 for each data identifier from the reception time and transmission time of the communication data of the start device 11, the end device 12, and the relay device 13 for each data identifier. The time and the communication time required for communication between them are calculated (step S16). The display unit 143 displays the calculated processing time and communication time on the screen (step S17). At this time, the communication monitoring device 14 sets a threshold for the maximum value of the processing time in the device (from input to output to the device) and the communication time between devices (from output from one device to input to the next device). If it is held in advance and there is a part exceeding this threshold in the total result, the operator may be alerted with a display or sound.

  As described above, according to the present embodiment, a data identifier is assigned to a data portion of communication data in a device that stores communication data in a packet among monitored devices. The monitoring target device performs data processing on data in a region other than the data identifier region of the communication data, and rewrites data in a region other than the data identifier region as necessary, but does not rewrite the data identifier region. Then, the reference time notification unit extracts the data identifier from the communication data, specifies the reference time and the transmission / reception, and transmits these to the communication monitoring device together with the identifier of the monitoring target device.

  With this configuration, in a system in which data communication is performed while the content of communication data is rewritten, the input / output times of the devices are specified, and the software processing in which device requires time, or between which devices A comprehensive output indicating whether network communication takes time. For this reason, the operator can easily identify the problem location (device or network). In addition, the transition (fluctuation) of the change amount of the communication time can be grasped. As a result, it is possible to easily grasp the insufficiency of the apparatus, deterioration over time, and the like, and it is possible to perform specific corrective actions (performance improvement and preventive repair). Further, the reference time notification unit is not greatly affected by the processing load of other application software operating on the monitoring target device operating on the second or third layer of the OSI reference model of each monitoring target device, and notifies the monitoring device. An error in transmission time and reception time can be reduced.

  Next, a second embodiment will be described. FIG. 8 is a diagram illustrating the configuration of the second embodiment. The communication processing system of the second embodiment is a positioning satellite ground system.

  As shown in FIG. 8, the positioning satellite ground system 2 includes a transmission station 21 including a transmission unit 211 that transmits a positioning upload signal from the ground to the satellite, and a reception unit 221 that receives a broadcast signal transmitted from the satellite to the ground. A receiving station 22 is provided. The positioning upload signal is a signal that is a source of the direction signal. The positioning upload signal is transmitted from the generation subsystem 23 to the satellite via the transmission subsystem 24. The broadcast signal is data that is sent from the positioning satellite to the user's positioning terminal and used for specifying location information, and the positioning upload signal is used as source data. The positioning satellite ground system 2 receives a broadcast signal and uses it for confirmation of signal quality and generation of the next positioning upload signal. Due to the characteristics of positioning satellite ground systems, positioning signal transmission delays, fluctuations, and discarding greatly affect service quality (positioning accuracy). Since the positioning satellite ground system provides a stable positioning service, it is necessary to detect and deal with transmission problems at an early stage. For this reason, the positioning satellite ground system includes a communication monitoring device 27 for monitoring the communication time in the system.

  As shown in FIG. 8, the positioning satellite ground system 2 includes a generation subsystem 23 that generates a positioning upload signal, a transmission subsystem 24 that transmits the positioning upload signal to the satellite, a reception subsystem 25 that receives a broadcast signal, and a broadcast signal. There are four subsystems of the evaluation subsystem 26 for checking the quality of the system.

  The generation subsystem 23 includes an application unit 231 that generates a positioning upload signal, a data identifier assignment unit 232, a packet communication unit 233, and a reference time notification unit 234. The packet communication unit 233 receives the communication packet of the broadcast signal processed by the application unit 261 of the evaluation subsystem 26 via Ethernet (registered trademark), and then the packet communication unit 233 receives the received broadcast signal. The communication packet is transferred to the application unit 231 of the generation subsystem 23. The reference time notification unit 234 mediates communication in the process and refers to the communication packet of the positioning upload signal. The reference time notification unit 234 acquires the data identifier by this reference, and specifies the time when the communication packet is referenced as the reception time in the generation subsystem 23. The reference time notification unit 234 transmits the acquired data identifier, the reference time referring to the data, transmission / reception, and its own data identifier to the communication monitoring device 27.

  When the application unit 231 generates a communication packet by converting the positioning upload signal into a TCP (or UDP) packet, the data identifier assigning unit 232 sets a data identifier at the head portion of the data portion of the communication packet. The data identifier is an identifier that can uniquely identify the positioning upload signal. The application unit 231 only needs to comply with the rule of storing the data identifier at the head of the data portion of the communication packet of the positioning upload signal, and need not be dedicated to this embodiment.

  Further, the packet communication unit 233 transmits the communication packet of the positioning upload signal in which the data identifier is set to the transmission subsystem 24 via the Ethernet. The reference time notification unit 234 mediates communication in the process and refers to the communication packet of the positioning upload signal. A data identifier is acquired by this reference, and the time referred to by this data is specified as the transmission time from the generation subsystem 23. The reference time notification unit 234 transmits the data identifier, reference time, transmission / reception, and its own data identifier to the communication monitoring device 27.

  The transmission subsystem 24 includes an application unit 241 that performs processing of the transmission subsystem on the communication packet of the positioning upload signal, a packet communication unit 242, and a reference time notification unit 243. The packet communication unit 242 of the transmission subsystem 24 receives the communication packet of the positioning upload signal in which the data identifier is set from the generation subsystem 23 via Ethernet. Thereafter, the packet communication unit 242 passes the received communication packet of the positioning upload signal to the application unit 241 of the transmission subsystem 24. The reference time notification unit 243 mediates communication in the process and refers to the communication packet of the positioning upload signal. The reference time notification unit 243 obtains the data identifier by this reference and specifies the time when the communication packet is referenced as the reception time in the transmission subsystem 24. The reference time notifying unit 243 transmits the acquired data identifier, the reference time referring to the data, the transmission / reception, and the own data identifier to the communication monitoring device 27.

  The application unit 241 performs processing of the transmission subsystem on the communication packet of the positioning upload signal and outputs it to the packet communication unit 242. The packet communication unit 242 transmits the communication packet of the positioning upload signal processed by the application unit 241 to the transmission station 21 via the Ethernet. The reference time notification unit 243 refers to the communication packet of the positioning upload signal during the transmission process. The reference time notification unit 243 acquires a data identifier by this reference, and specifies the time when the data is referred to as the transmission time from the transmission subsystem 24. The reference time notifying unit 243 transmits the acquired data identifier, the reference time referring to the data, the transmission / reception, and the own data identifier to the communication monitoring device 27.

  The packet communication unit 212 of the transmission station 21 receives the communication packet of the positioning upload signal in which the data identifier is set from the transmission subsystem 24 via the Ethernet. Thereafter, the packet communication unit 212 passes the received communication packet of the positioning upload signal to the application unit 214 of the transmitting station 21. The reference time notification unit 213 mediates communication in the process and refers to the communication packet of the positioning upload signal. The reference time notification unit 213 acquires a data identifier by this reference and specifies the time when the communication packet is referenced as the reception time at the transmitting station 21. The reference time notification unit 213 transmits the acquired data identifier, the reference time referring to the data, transmission / reception, and its own data identifier to the communication monitoring device 27.

  The communication monitoring device 27 includes a reference time receiving unit 271, a time calculating unit 272, and a display unit 273. The reference time reception unit 271 receives the reference time of the positioning upload signal from each reference time notification unit 234, 243, 213. The time calculation unit 272 arranges this time for each data identifier, so that the processing time required in the transmission subsystem on the communication path for each positioning upload signal, between the generation subsystem 23 and the broadcast subsystem, and The communication time required for network communication between the broadcasting subsystem and the transmitting station is calculated.

  The display unit 273 displays the calculated processing time and communication time on the screen. The communication monitoring device 27 has a first threshold value relating to processing time in each subsystem and a communication time value between subsystems and a second threshold value relating to fluctuation time. If these threshold values are exceeded, A warning may be issued to the operator by display or sound, and attention may be given.

  FIG. 9 is a diagram illustrating an example of a screen displayed by the communication monitoring apparatus. As shown in FIG. 9, for example, the communication monitoring device 27 displays the devices on the communication path in advance in the order of transmission on the screen, and receives the reception time and transmission time of each device for each data identifier as a result of organizing the communication information. Is displayed. In FIG. 9, the data identifier AAAAA data is received at the generation subsystem at 01: 00: 0, the transmission time is 01:00:02, and the reception time at the transmission subsystem is 01:00: 03, the transmission time is 01:00:05, the reception time at the transmission station is 01:00:06, and the transmission time is 01:00:08.

  In this case, as shown in FIG. 9, the communication monitoring device 27 includes processing time (difference between reception time and transmission time) in each device, network transmission time between devices (transmission time of the transmission side device and reception side device). Difference in reception time). For example, in the example of the data with the above-described data identifier AAAAA, as shown in FIG. 9, the processing time in the generation subsystem is displayed as 00:00:02 that is the difference between the reception time and the transmission time, As the communication time with the transmission subsystem, 00:00:01 which is the difference between the reception time of the transmission subsystem and the transmission time of the generation subsystem is displayed. In addition, 00:00:02, which is the difference between the reception time and the transmission time, is displayed as the processing time in the transmission subsystem, and the reception time of the transmission station and the transmission are transmitted as the communication time between the transmission station and the transmission subsystem. The difference between the transmission times of the subsystems is displayed as 00:00:01. In addition, as the processing time at the transmitting station, 00:00:02, which is the difference between the reception time and the transmission time, is displayed.

  In addition, the communication monitoring device 27 sets threshold values for the maximum values of the processing time in the device (from input to output to the device) and the communication time between devices (from output from one device to input to the next device). If there is an aggregation result that exceeds this threshold, the operator may be warned with a display or sound, and attention may be given. When the display unit 273 holds, for example, 00:00:03 as the processing time threshold in the transmission subsystem, the display unit 273 displays the processing time in the transmission subsystem of the data identifier AAAAB and the data identifier AAAAC as shown in FIG. Since the processing time in the transmission subsystem exceeds the threshold value, a specific pattern or background color that calls attention to the background of the display value may be displayed.

  With this configuration, the operator can easily grasp the actual communication status of the positioning upload signal. That is, if there is a part where communication time is longer than expected or a part where the time fluctuates greatly, the operator can immediately grasp.

  The broadcast signal can be monitored by the communication monitoring device 27 basically in the same manner as the positioning upload signal. The broadcast signal is sent from the satellite to the generation subsystem 23 via the reception station 22, the reception subsystem 25 and the evaluation subsystem 26. The receiving station 22 includes a receiving unit 221 that receives a broadcast signal transmitted from the satellite to the ground, and an application unit that generates a communication packet obtained by converting the signal transmitted from the satellite to the ground and received by the receiving unit into a TCP (or UDP) packet. 222, a data identifier giving unit (second data identifier giving unit) 223, a packet communication unit 224, and a reference time notification unit 225. When the application unit 222 converts the broadcast signal into a TCP (or UDP) packet, the data identifier assigning unit 223 sets the data identifier at the head portion of the data portion of the communication packet of the broadcast signal. The data identifier is an identifier that can uniquely identify the broadcast signal. Further, the packet communication unit 224 transmits a broadcast signal communication packet in which the data identifier is set to the reception subsystem 25 via the Ethernet. The reference time notification unit 225 mediates communication in the process and refers to the communication packet of the broadcast signal. The data identifier is acquired by this reference, and the time referred to by this data is specified as the transmission time from the receiving station 22. The reference time notification unit 225 transmits the data identifier, reference time, transmission / reception, and its own data identifier to the communication monitoring device 27. The data identifier for the broadcast signal is set by the data identifier assigning unit 223 of the receiving station 22 that first handles this data as a terrestrial system.

  The reception subsystem 25 includes an application unit 251 that performs processing of the reception subsystem 25 on communication packets of broadcast signals, a packet communication unit 252, and a reference time notification unit 253. The packet communication unit 252 receives a communication signal of a broadcast signal in which a data identifier is set from the receiving station 22 via Ethernet. Thereafter, the packet communication unit 252 passes the received packet to the application unit 251. The reference time notification unit 253 mediates communication in the process and refers to the communication packet of the broadcast signal. The reference time notification unit 253 acquires the data identifier by this reference, and specifies the time when the communication packet of the broadcast signal is referenced as the reception time in the reception subsystem 25. The reference time notification unit 253 transmits the acquired data identifier, the reference time referring to the data, transmission / reception, and its own data identifier to the communication monitoring device 27.

  The application unit 251 performs reception subsystem processing on the communication packet of the broadcast signal, and outputs it to the packet communication unit 252. The packet communication unit 252 transmits the broadcast signal communication packet processed by the application unit 251 to the evaluation subsystem 26 via the Ethernet. The reference time notification unit 253 refers to the communication packet of the broadcast signal during the transmission process. The reference time notification unit 253 obtains a data identifier based on this reference, and specifies the time when the data is referred to as the transmission time from the reception subsystem 25. The reference time notification unit 253 transmits the acquired data identifier, the reference time referring to the data, transmission / reception, and its own data identifier to the communication monitoring device 27.

  The evaluation subsystem 26 includes an application unit 261 that performs processing of the evaluation subsystem on communication packets of broadcast signals, a packet communication unit 262, and a reference time notification unit 263. The packet communication unit 262 receives a communication packet of a broadcast signal in which a data identifier is set from the reception subsystem 25 via Ethernet. Thereafter, the packet communication unit 262 passes the received packet to the application unit 261. The reference time notification unit 263 mediates communication in the process and refers to the communication packet of the broadcast signal. The reference time notification unit 263 obtains a data identifier by this reference, and specifies the time when the communication packet of the broadcast signal is referenced as the reception time in the evaluation subsystem 26. The reference time notification unit 263 transmits the acquired data identifier, the reference time referring to the data, transmission / reception, and its own data identifier to the communication monitoring device 27.

  The application unit 261 performs processing of the evaluation subsystem on the communication packet of the broadcast signal and outputs it to the packet communication unit 262. The packet communication unit 262 transmits the broadcast signal communication packet processed by the application unit 261 to the generation subsystem 23 via the Ethernet. The reference time notification unit 263 refers to the communication packet of the broadcast signal during the transmission process. The reference time notification unit 263 obtains a data identifier by this reference, and specifies the time when the data is referenced as the transmission time from the evaluation subsystem 26. The reference time notification unit 263 transmits the acquired data identifier, the reference time referring to the data, transmission / reception, and its own data identifier to the communication monitoring device 27.

  The communication monitoring device 27 has communication paths with the reference time notification units 213, 225, 234, 243, 253, and 263, and collects information on the data identifier, reference time, and transmission / reception from each reference time notification unit. To do. The communication monitoring device 27 organizes the information and notifies the operator of the communication status.

  As described above, also in the present embodiment, as in the first embodiment, a data identifier is assigned to a data portion of communication data in a device that stores communication data in a packet among devices to be monitored. The monitoring target device performs data processing on data in a region other than the data identifier region of the communication data, and rewrites data in a region other than the data identifier region as necessary, but does not rewrite the data identifier region. Then, the reference time notification unit operating in the second layer or the third layer of the OSI reference model of each monitoring target device extracts the data identifier from the communication data, specifies the transmission / reception and the reference time, and uses these to identify the monitoring target device. It is transmitted to the communication monitoring device together with the identifier. With this configuration, the same effects as in the first embodiment can be obtained in this embodiment.

  While the present invention has been described with reference to the embodiments, the present invention is not limited to the above embodiments. Various changes that can be understood by those skilled in the art can be made to the configuration and details of the present invention within the scope of the present invention.

DESCRIPTION OF SYMBOLS 1 Communication processing system 11 Originating device 12 Ending device 13 Relay device 14 Communication monitoring device 111, 121, 131 Processing unit 112 Data identifier assigning unit 113, 122, 132 Reference time notifying unit 2 Positioning satellite ground system 21 Transmitting station 22 Receiving station 23 Generation subsystem 24 Transmission subsystem 25 Reception subsystem 26 Evaluation subsystem 27 Communication monitoring device 214, 222, 231, 241, 251, 261 Application unit 223 232 Data identifier assignment unit 212, 224, 233, 242, 252, 262 Packet communication unit 213, 225, 234, 243, 253, 263 Reference time notification unit 271 Reference time reception unit 272 Time calculation unit 273 Display unit 50 Information processing device 51 CPU
52 ROM
53 RAM
54 program 55 storage device 56 recording medium 57 drive device 58 communication interface 59 communication network 60 input / output interface 61 bus

Claims (10)

In a communication processing system having a plurality of monitoring target devices that transmit or receive communication packets and a communication monitoring device,
The monitoring target device that generates the communication packet among the plurality of monitoring target devices includes a data identifier giving unit that gives a data identifier to a data part of the generated communication packet,
The plurality of monitoring target devices notify at least one of a reception time referring to the communication packet in the course of reception processing and a transmission time referring to the communication packet in the course of transmission processing and the data identifier And a processing unit that performs data processing on data in an area other than the area of the data identifier of the communication packet,
The communication monitoring device monitors a processing time required for processing in the plurality of monitoring target devices and a communication time required for communication between the plurality of monitoring target devices for each data identifier;
A communication processing system.   The communication processing system according to claim 1, wherein the reference time notification unit operates in a second layer or a third layer of an OSI (Open Systems Interconnection) reference model of a monitoring target device that generates the communication packet. The communication processing system according to claim 1, wherein the data identifier assigning unit assigns the data identifier immediately after a packet header, which is a head of a data portion of the communication packet. The communication monitoring device has a first threshold value related to the processing time or the communication time, and issues a warning when the processing time or the communication time exceeds the first threshold value. The communication processing system according to any one of the above. The communication monitoring device has a second threshold value regarding fluctuation of the processing time or the communication time, and issues a warning when the fluctuation of the processing time or the communication time exceeds the second threshold value. The communication processing system according to any one of 1 to 4. A transmission station that includes a transmission unit that transmits a positioning upload signal from the ground to the satellite, and a reception station that includes a reception unit that receives a broadcast signal transmitted from the satellite to the ground,
The monitoring target device that generates the communication packet among the plurality of monitoring target devices packetizes the positioning upload signal to generate the communication packet,
The communication processing system according to claim 1. A transmission station including a transmission unit that transmits a positioning upload signal from the ground to the satellite; and a reception station that includes a reception unit that receives a broadcast signal transmitted from the satellite to the ground.The reception station receives the broadcast signal. An application unit that packetizes and generates the communication packet; and a second data identifier assigning unit that assigns the data identifier to the data part of the communication packet.
The communication processing system according to claim 1. At least one of a reception time when a communication packet is referred to in the process of reception processing in a plurality of monitoring target devices and a transmission time referred to during the transmission process of the communication packet, and the communication packet among the plurality of monitoring target devices A reference identifier for receiving a data identifier given to the data part of the communication packet by the monitoring target device that generates
Based on at least one of the reception time and the transmission time and the data identifier, processing time required for processing in the plurality of monitoring target devices and communication between the plurality of monitoring target devices for each data identifier A time calculation unit for calculating communication time;
A display unit for displaying the calculated processing time and the communication time for each data identifier;
A communication monitoring device. At least one of a reception time when a communication packet is referred to in the process of reception processing in a plurality of monitoring target devices and a transmission time referred to during the transmission process of the communication packet, and the communication packet among the plurality of monitoring target devices Receiving the data identifier given to the data part of the communication packet by the monitoring target device that generates
Based on at least one of the reception time and the transmission time and the data identifier, processing time required for processing in the plurality of monitoring target devices and communication between the plurality of monitoring target devices for each data identifier Calculate the communication time,
Displaying the calculated processing time and the communication time for each data identifier;
Communication monitoring method. On the computer,
At least one of a reception time when a communication packet is referred to in the process of reception processing in a plurality of monitoring target devices and a transmission time referred to during the transmission process of the communication packet, and the communication packet among the plurality of monitoring target devices Receiving the data identifier assigned to the data portion of the communication packet by the originating device that generates
Based on at least one of the reception time and the transmission time and the data identifier, processing time required for processing in the plurality of monitoring target devices and communication between the plurality of monitoring target devices for each data identifier Processing to calculate communication time;
Processing for displaying the calculated processing time and the communication time for each data identifier;
Monitoring program that executes

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