JP2012010057A - Communication device and its operation method - Google Patents

Abstract

PROBLEM TO BE SOLVED: To early terminate polling in a communication device using two communication methods.SOLUTION: A polling telegraphic message is created by a wireless communication method N (S1), and transmitted to an exterior by the wireless communication method N (S3). If a response is transmitted (S5:YES), a telegraphic message including the polling telegraphic message by a wireless communication method M as data is created by the wireless communication method N (S13), and transmitted to a responder by the wireless communication method N (S15).

Description

  The present invention relates to a communication device and an operation method thereof.

  In recent years, the number of entrance / exit systems and ticket gate systems using contactless IC cards has increased.

  These systems include a host device (for example, an entry / exit management server) that creates a polling command, a relay device (for example, an IC card RW) that converts the polling command into a polling message using a predetermined communication method, and arbitrary communication means. And a mobile terminal (for example, an IC card) having an identification information management unit for managing identification information necessary for entry / exit, and a host device sends a polling command to the relay device and relays The device uses it as a trigger to repeatedly send polling messages at arbitrary intervals to detect the mobile terminal.

Application of Wireless Card System Technical Document ARIB TR-T10 1.0 Edition 13, [online], The Japan Radio Industry Association, [June 14, 2010 search], Internet <URL: http: // www. arib. or. jp / english / html / overview / doc / 3-TR-T10v1_0. pdf>

  By the way, not only communication methods used for non-contact IC cards but also communication methods such as PAN (Personal Area Network) and electric field communication can be used for the existing entrance / exit system. If you want to be able to use a new communication method without changing it and minimizing the change, the following restrictions occur.

  1) When a time stamp or transmission count value is attached to a polling message by an existing communication method, it is necessary to send the polling message to the mobile terminal and return the result to the existing communication unit.

  2) The polling message can be seen only as data by a communication unit using a new communication method. Therefore, the new communication unit transmits a message including a polling message by the existing communication method by the new communication method, extracts a response to the polling message by the existing communication method from the response message, and transmits it to the existing communication unit. There is a need to.

  3) In the polling process, when the new communication service is used as compared with the existing service, the polling process of the new communication unit and the transmission / reception process of the existing polling message by the new communication unit (about 3 mS in communication time. Equipment processing time is added).

  In the existing entrance / exit system, the polling interval is about 30 mS to 2S. Here, considering a timeout of 30 mS, when a new communication method is used based on the example of Non-Patent Document 1, the total polling communication time is about 5.6 mS, so the processing time in each communication device at the time of polling If the total is not within about 24.4 ms, it will time out. When the polling processing time in each communication device is 2.5 mS or more on average, a timeout occurs, and only polling processing takes 54 mS or more. Since the communication time other than polling and the processing time in each communication device is about 180 mS, it takes 234 mS or more in total. As in the case of Non-Patent Document 1, when the service processing of the entrance / exit system is considered to be about 200 mS, there is a problem that a delay of 34 mS or more occurs.

  FIG. 4 is a sequence diagram showing the operation of a conventional communication system, and shows a situation when the distance between the communication devices 1A and 2 is long and out of the communication range.

  In the communication device 1A, the communication unit 12 is an existing communication unit, and the communication unit 13A is a new communication unit. In the communication device 2, the communication unit 22 is an existing communication unit, and the communication unit 23 is a new communication unit.

  When the communication device 1A is activated, the information processing unit 11 transmits a polling command to the communication unit 12 (T101). When the polling command is transmitted, the communication unit 12 creates a polling message by the wireless communication method M. And transmitted to the communication unit 13A (T102).

  If the communication unit 13A receives the polling message by the wireless communication method M, the communication unit 13A creates a polling message by the wireless communication method N and sends it to the outside by the wireless communication method N (T103).

  When the distance between the communication devices 1A and 2 is long and out of the communication range, the polling message by the wireless communication method N from the communication unit 13A does not reach the communication device 2, and the communication unit 13A eventually times out.

  Since there is no response from the communication unit 13A, the communication unit 12 repeats timeout and transmission of a polling message.

  FIG. 5 is a sequence diagram showing the operation of the conventional communication system, and shows the situation when the distance between the communication devices 1A and 2 is short and within the communication range.

  When the communication device 1A is activated, the information processing unit 11 transmits a polling command to the communication unit 12 (T101). When the polling command is transmitted, the communication unit 12 creates a polling message by the wireless communication method M. And transmitted to the communication unit 13A (T102).

  If the communication unit 13A receives the polling message by the wireless communication method M, the communication unit 13A creates a polling message by the wireless communication method N and sends it to the outside by the wireless communication method N (T103).

  When receiving the polling message by the wireless communication method N, the communication unit 23 creates a response message for the polling message, and sends the response message to the outside by the wireless communication method N (T111).

  If the communication unit 13A receives a response message by the wireless communication method N, the communication unit 13A can communicate with the response transmission source, that is, the communication unit 23 by the wireless communication method N on the condition that the response is a positive response. Make preparations.

  When the communication unit 13A can communicate with the communication unit 23 by the wireless communication method N, the communication unit 13A creates a message by the wireless communication method N including the polling message as data by the previously received wireless communication method M, It transmits to the communication part 23 (T113).

  The communication unit 23 receives a message by the wireless communication method N, extracts data from the message, that is, a polling message by the wireless communication method M, and transmits the data to the communication unit 22 by the wireless communication method M (T115).

  The communication unit 22 receives the polling message by the wireless communication method M, converts the polling message into a polling command, and transmits the polling command to the information processing unit 21 (T117).

  The information processing unit 21 receives the polling command, creates a response command (for example, a positive response command) to the polling command, and transmits the response command to the communication unit 22 (T119).

  The communication unit 22 converts the response command into a response message to the polling message by the wireless communication method M, and transmits the response command to the communication unit 23 by the wireless communication method M (T121).

  The communication unit 23 receives a message by the wireless communication method M, generates a message by the wireless communication method N including the message by the wireless communication method M as data, and transmits the message to the communication unit 13A by the wireless communication method N (T123).

  The communication unit 13A receives a message by the wireless communication method N, extracts data from the message by the wireless communication method N, that is, a response message to the polling message by the wireless communication method M, and transmits it to the communication unit 12 by the wireless communication method M ( T125).

  However, when the polling message (T102) of the communication unit 12 times out (time t1) before receiving the response message, that is, after transmitting the polling message by the wireless communication method M to the communication unit 13A (T102). Even if the communication unit 12 receives a response message after time t1 when a predetermined length of time has elapsed (T125), the communication unit 12 has already sent a polling message by the wireless communication method M to the communication unit 13A again at time t1. Transmitting (T131).

  Since the communication unit 13A can communicate with the communication unit 23 by the wireless communication method N, the communication unit 13A does not transmit the polling message by the wireless communication method N and includes the polling message by the wireless communication method M as data. A telegram by N is transmitted to the communication unit 23 (T133).

  The communication unit 23 receives a message by the wireless communication method N, extracts data from the message, that is, a polling message by the wireless communication method M, and transmits the data to the communication unit 22 by the wireless communication method M (T135).

  The communication unit 22 receives the polling message by the wireless communication method M, converts the polling message into a polling command, and transmits the polling command to the information processing unit 21 (T137).

  The information processing unit 21 receives the polling command, creates a response command (for example, a positive response command) for the polling command, and transmits the response command to the communication unit 22 (T139). The information processing unit 21 has an identifier indicating the information processing unit 21 in advance, and includes this in the response command.

  The communication unit 22 converts the response command into a response message to the polling message by the wireless communication method M, and transmits the response command to the communication unit 23 by the wireless communication method M (T141).

  The communication unit 23 receives a message by the wireless communication method M, generates a message by the wireless communication method N including the message by the wireless communication method M as data, and transmits the message to the communication unit 13A by the wireless communication method N (T143).

  The communication unit 13A receives a message by the wireless communication method N, extracts data from the message by the wireless communication method N, that is, a response message to the polling message by the wireless communication method M, and transmits it to the communication unit 12 by the wireless communication method M ( T145).

  Since the communication unit 13A has not transmitted a polling message by the wireless communication method N this time, for example, the communication unit 12 receives a response message before a timeout occurs.

  When the communication unit 12 receives the response message by the wireless communication method M, the communication unit 12 converts the message into a response command created by the information processing unit 21 and transmits it to the information processing unit 11 by wire (T147: time t2).

  FIG. 5 shows a state where the distance between the communication devices 1A and 2 is short and within the communication range. When the communication devices 1A and 2 are gradually approaching, the following is performed. appear.

  For example, if the time at which the communication devices 1A and 2 approach until the polling message (T103) from the communication unit 13A reaches the communication device 2 is immediately before time t1, the polling message (T103) of the communication unit 13A has already timed out. Therefore, the communication unit 13A waits until the communication unit 12 times out and transmits a polling message by the wireless communication method M again (T102), transmits the polling message (T103) again, and responds ( T111) must be received. Therefore, polling between the communication units 12 and 22 does not end at the time t2, and the polling ends after the polling message of the communication unit 12 times out again.

  The present invention has been made in view of the above-described problems, and an object of the present invention is to provide a technique capable of ending polling in a communication apparatus using two communication methods at an early stage.

  In order to solve the above-described problem, a first aspect of the present invention is a communication device including a first communication unit that communicates using a first communication method and a second communication unit that communicates using a second communication method. The second communication unit sends a polling message according to the second communication method to the outside, and after a response to the polling message is transmitted, the first communication unit polls the message according to the first communication method. Is transmitted to the outside by using the second communication method using the polling message as data, and the response to the polling message using the first communication method is extracted from the response message to the message. It transmits to the communication part of this.

  2nd this invention is a communication apparatus used with the communication apparatus which concerns on 1st this invention, Comprising: The 2nd communication method communicates with the 1st communication part which communicates with the 1st communication method The second communication unit sends out a response to a polling message by the second communication method from the outside, and the first communication method from the message by the second communication method from the outside A polling message is extracted from the first communication unit, transmitted to the first communication unit, and a message by the second communication method using a response from the first communication unit to the polling message as data is sent to the outside. .

  A third aspect of the present invention is an operation method of a communication apparatus including a first communication unit that communicates by a first communication method and a second communication unit that communicates by a second communication method, wherein the second communication unit After the communication unit sends out a polling message according to the second communication method and the second communication unit transmits a response to the polling message, the first communication unit uses the first communication method. When a polling message is transmitted, a message by the second communication method using the polling message as data is sent to the outside, and the second communication unit polls by the first communication method from a message in response to the message. A response to the electronic message is taken out and transmitted to the first communication unit.

  The fourth aspect of the present invention is a method of operating a communication apparatus used together with the communication apparatus according to the first aspect of the present invention. The communication apparatus includes a first communication unit that communicates with the first communication method and a second communication unit. A second communication unit that communicates with the communication method of the above, wherein the second communication unit sends an external response to a polling message according to the second communication method, and the second communication unit includes: The polling message by the first communication method is taken out from the message by the second communication method from the outside, transmitted to the first communication unit, and the response from the first communication unit to the polling message is used as data. It is characterized in that a message by the communication method 2 is sent to the outside.

  ADVANTAGE OF THE INVENTION According to this invention, the technique which can complete | finish polling in the communication apparatus which uses two communication methods at an early stage can be provided.

It is a block diagram of the communication system which concerns on this Embodiment. 4 is a flowchart showing a flow of processing in a communication unit 13 of the communication device 1. It is a sequence diagram which shows operation | movement of a communication system. It is a sequence diagram which shows operation | movement of the conventional communication system, and shows the mode in case the distance between communication apparatus 1A, 2 is long and is outside a communication range. It is a sequence diagram which shows operation | movement of the conventional communication system, and shows the mode in case the distance between communication apparatus 1A and 2 is short, and is in a communication range.

  Hereinafter, embodiments of the present invention will be described with reference to the drawings.

  FIG. 1 is a configuration diagram of a communication system according to the present embodiment.

  The communication device 1 includes an information processing unit 11 that performs information processing using information in the communication device 2, a communication unit 12 that is connected to the information processing unit 11 by wire, and a wireless communication method M (for example, a contactless card). The communication unit 12 includes a communication unit 13 that communicates with the communication unit 12 using a wireless communication method N (for example, electric field communication).

  The communication unit 13 is newly provided in the communication device 1. The communication device 1 before the communication unit 13 is provided is the communication device 2, that is, the communication unit 12 is connected to the communication device by the wireless communication method M. 2 was communicating.

  However, after the communication unit 13 is provided, the communication device 1 is the communication device 2, that is, the communication unit 13 is a new communication method, that is, a wireless communication method N different from the wireless communication method M. Communicate with 2.

  The communication unit 13 includes a relay unit 131 that communicates with the communication unit 12 by the wireless communication method M, and a relay unit 132 that is connected to the relay unit 131 by wire and communicates with the communication device 2 by the wireless communication method N.

  The communication device 2 communicates with the communication unit 22 by the wireless communication method M, the information processing unit 21 having information necessary for the communication device 1, the communication unit 22 connected to the information processing unit 21 by wire, and the wireless communication method M. Includes a communication unit 23 that communicates by the wireless communication method N.

  The communication unit 23 is newly provided in the communication device 2. The communication device 2 before the communication unit 23 is provided is the communication device 1, that is, the communication unit 22 is connected to the communication device M by the wireless communication method M. 1 was communicating.

  However, after the communication unit 23 is provided, the communication device 2 communicates with the communication device 1, that is, the communication unit 23 communicates with the communication device 2 by the wireless communication method N.

  The communication unit 23 is connected to the relay unit 231 that communicates with the communication unit 22 by the wireless communication method M, and is connected to the relay unit 231 by wire, and communicates with the communication device 1 (that is, the relay unit 132 of the communication device 1) by the wireless communication method N. And a relay unit 232 that performs the operation.

  FIG. 2 is a flowchart showing the flow of processing in the communication unit 13 of the communication device 1.

  The relay unit 132 of the communication unit 13 creates a polling message by the wireless communication method N (S1), and sends it to the outside by the wireless communication method N (S3).

  Next, the relay unit 132 of the communication unit 13 determines whether a response to the polling message has been transmitted (S5). If the relay unit 132 of the communication unit 13 determines that a response has not been transmitted (S5: NO), it determines whether or not a timeout has occurred (a predetermined time has elapsed from the time of step S3) (S7), and no timeout has occurred. If so, the process returns to step S5.

  If the response is transmitted (S5: YES), the relay unit 132 of the communication unit 13 can communicate with the response transmission source, that is, the communication unit 23 by the wireless communication method N on the condition that the response is an affirmative response. Is prepared (transition to the connected state) (S9).

  Next, the relay unit 131 of the communication unit 13 determines whether or not a polling message by the wireless communication method M is transmitted from the communication unit 12 to the relay unit 131 of the communication unit 13 (S11). When the relay unit 131 of the communication unit 13 determines that the polling message has not been transmitted, the relay unit 131 returns to step S11.

  When the polling message is transmitted (S11: YES), the relay unit 131 of the communication unit 13 transmits the polling message by the wireless communication method M to the relay unit 132 of the communication unit 13 by wire, and relays the communication unit 13 The unit 132 creates a message by the wireless communication method N using the transmitted polling message by the wireless communication method M as data (S13), and transmits it to the other party, that is, the communication unit 23 by the wireless communication method N (S15).

  Next, the relay unit 132 of the communication unit 13 determines whether or not a message by the wireless communication method N is transmitted to the relay unit 132 of the communication unit 13 (S17).

  This message is a message according to the wireless communication method N including a response to the polling message by the wireless communication method M transmitted from the communication unit 12 to the relay unit 131 of the communication unit 13, that is, a response by the wireless communication method M as data.

  If the relay unit 132 of the communication unit 13 determines that a message by the wireless communication method N has not been transmitted (S17: NO), the relay unit 132 determines whether a timeout has occurred (a predetermined time has elapsed from the time of step S15) ( S19) If not timed out, return to step S17, and if timed out, return to step S1.

  When the message by the wireless communication method N is transmitted (S17: YES), the relay unit 132 of the communication unit 13 extracts the response to the data, that is, the polling message by the wireless communication method M, from the message by the wireless communication method N (S21). ), To the relay unit 131 of the communication unit 13, and the relay unit 131 of the communication unit 13 transmits a response to the communication unit 12 (S23), and ends the process.

  FIG. 3 is a sequence diagram showing the operation of the communication system.

  FIG. 3 shows a state in which the communication devices 1 and 2 approach each other and communication is started.

  When the communication device 1 is activated, the communication unit 13 sends a polling message by the wireless communication method N to the outside (T1).

  When the distance between the communication devices 1 and 2 is long, the polling message by the wireless communication method N from the communication unit 13 does not reach the communication device 2, and the communication unit 13 repeats the timeout and transmission of the polling message.

  When the communication device 1 is activated, the information processing unit 11 transmits a polling command to the communication unit 12 by wire (T2). When the polling command is transmitted, the communication unit 12 performs a polling message by the wireless communication method M. Is transmitted to the communication unit 13 (T3).

  Since the communication unit 12 does not transmit a response from the communication unit 13 to the communication unit 12, the communication unit 12 repeats the transmission of the polling message by the timeout and the wireless communication method M.

  Here, it is assumed that the information processing unit 11 is not set to time out. Therefore, the information processing unit 11 waits for a response to the polling command.

  When the communication devices 1 and 2 approach each other and the relay unit 232 of the communication unit 23 receives a polling message by the wireless communication method N from the communication unit 13, the relay unit 232 creates a message of a response to the polling message, A response message is sent to the outside by the wireless communication method N (T11).

  The communication unit 13 receives a response message by the wireless communication method N.

  About the polling message | telegram by the wireless communication method M already transmitted from the communication part 12, it will time out soon (time t1).

  Since the communication unit 12 has timed out, the communication unit 12 again creates a polling message by the wireless communication method M and transmits the polling message to the relay unit 131 of the communication unit 13 by the wireless communication method M (T13).

  The relay unit 131 of the communication unit 13 receives the polling message by the wireless communication method M, transmits the polling message to the relay unit 132 of the communication unit 13 by wire, and the relay unit 132 transmits the polling message by the wireless communication method M. A telegram based on the wireless communication method N as data is created (that is, step S13 in FIG. 2 is executed), and transmitted to the communication unit 23 by the wireless communication method N (that is, step S15 in FIG. 2 is executed) (T15).

  The relay unit 232 of the communication unit 23 receives a message by the wireless communication method N and transmits it to the relay unit 231 of the communication unit 23 by wire. The relay unit 231 extracts data, that is, a polling message by the wireless communication method M from the message, and transmits the data to the communication unit 22 by the wireless communication method M (T17).

  The communication unit 22 receives the polling message by the wireless communication method M, converts the polling message into a polling command, and transmits the polling command to the information processing unit 21 (T19).

  The information processing unit 21 receives the polling command, creates a response command to the polling command (for example, an affirmative response command), and transmits the response command to the communication unit 22 by wire (T21). The information processing unit 21 has an identifier indicating the information processing unit 21 in advance and is included in the response command.

  The communication unit 22 converts the response command into a response message to the polling message by the wireless communication method M, and transmits the response command to the relay unit 231 of the communication unit 23 by the wireless communication method M (T23).

  The relay unit 231 of the communication unit 23 receives a response message to the polling message by the wireless communication method M, transmits the message to the relay unit 232 of the communication unit 23 by wire, and the relay unit 232 uses the wireless communication method M. A message by the wireless communication method N including a response message to the polling message as data is generated and transmitted to the communication unit 13 by the wireless communication method N (T25).

  The relay unit 132 of the communication unit 13 receives a message by the wireless communication method N and transmits it to the relay unit 131 of the communication unit 13 by wire. The relay unit 131 extracts data, that is, a response message to the polling message by the wireless communication method M from the message, and transmits it to the communication unit 12 by the wireless communication method M (T27).

  The communication unit 12 receives a response message by the wireless communication method M, converts the message into a response command created by the information processing unit 21, and transmits it to the information processing unit 11 by wire (T29: time t2).

  Thus, in the present embodiment, polling between the information processing units 11 and 21 is finished, and polling between the communication units 12 and 22 and polling between the communication units 13 and 23 are also finished during that period.

  If the response command indicates an affirmative response, the information processing unit 11 communicates with the information processing unit 21 through the communication unit 12, the communication unit 13, the communication unit 23, and the communication unit 22 in the same sequence. If the communication is completed, a polling command is transmitted to the communication unit 12, and this is repeated until the response command indicates an affirmative response.

  Even when the response command indicates a negative response, the information processing unit 11 transmits a polling command to the communication unit 12 and repeats this until the response command indicates an affirmative response.

  Now, in FIG. 5 described above, if the time when the communication devices 1A and 2 approach until the polling message (T103) from the communication unit 13A reaches the communication device 2 is immediately before the time t1, the polling message ( Since T103) has already timed out, the communication unit 13A waits until the communication unit 12 times out and again transmits a polling message by the wireless communication method M (T102), and again polls (T103). And a response (T111) must be received. Therefore, polling between the communication units 12 and 22 does not end at the time t2, and the polling ends after the polling message of the communication unit 12 times out again.

  However, in the present embodiment, the time when the communication devices 1 and 2 approach each other is immediately before time t1, that is, the response (T11) to the polling message (T1) is transmitted immediately before time t1. Even if it exists, as described above, polling can be terminated at time t2.

  As described above, the communication unit 13 sends a polling message by the wireless communication method N to the outside (S3, T1), and after the response to the polling message is transmitted (S5: YES, T11), the communication unit 12 If a polling message by the wireless communication method M is transmitted (S11: YES, T13), a message by the second communication method using the polling message as data is sent to the outside (S13, S15, T15), and a response to the message is received. A response to the polling message by the first communication method is extracted from the message (S17: YES, T25) (S21) and transmitted to the communication unit 12 (S23, T27), and the communication unit 23 performs the second communication from the outside. A response to the polling message (T1) by the method is sent to the outside (T11), and the first communication from the message (T15) by the second communication method from the outside. The polling message by the method is taken out and transmitted to the communication unit 22 (T17), and the message by the second communication method using the response from the communication unit 22 to the polling message as data is sent to the outside (T25). The time until polling between the communication units 12 and 22 is completed after 1 and 2 are close to each other can be shortened.

  In the present embodiment, the wireless communication method has been described as an example. However, each communication method may be performed using wired communication.

  A computer program for causing a computer to cause the apparatus to execute the operation method of the communication apparatus 1 or the communication apparatus 2 according to the present embodiment is a semiconductor memory, a magnetic disk, an optical disk, a magneto-optical disk, a magnetic tape, or the like Can be recorded on a computer-readable recording medium, and can be widely distributed by being transmitted through a communication network such as the Internet.

DESCRIPTION OF SYMBOLS 1, 2 ... Communication apparatus 11, 21 ... Information processing part 12, 13, 22, 23 ... Communication part 131, 132, 231, 232 ... Relay part

Claims (4)

A communication device comprising a first communication unit that communicates with a first communication method and a second communication unit that communicates with a second communication method,
The second communication unit is
Sending out a polling message by the second communication method,
After a response to the polling message is transmitted, if a polling message by the first communication method is transmitted from the first communication unit, a message by the second communication method using the polling message as data is transmitted to the outside. And
A communication device that extracts a response to a polling message by the first communication method from a response message to the message and transmits the response to the first communication unit. A communication device used with the communication device according to claim 1,
A first communication unit that communicates using a first communication method and a second communication unit that communicates using a second communication method;
The second communication unit is
Sending out a response to the polling message by the second communication method from outside,
The polling message by the first communication method is taken out from the message by the second communication method from the outside, transmitted to the first communication unit, and the response from the first communication unit to the polling message is used as data. A communication device that sends out a message by the communication method of 2 to the outside. An operation method of a communication apparatus including a first communication unit that communicates with a first communication method and a second communication unit that communicates with a second communication method,
The second communication unit sends out a polling message according to the second communication method;
If the polling message by the first communication method is transmitted from the first communication unit after the response to the polling message is transmitted, the second communication unit uses the polling message as data. Send a message by communication method to the outside,
The operation method of the communication apparatus, wherein the second communication unit extracts a response to the polling message by the first communication method from a response message to the message and transmits the response to the first communication unit. A method of operating a communication device used with the communication device according to claim 1,
The communication apparatus includes a first communication unit that communicates using a first communication method and a second communication unit that communicates using a second communication method.
The second communication unit sends out a response to a polling message by the second communication method from the outside,
The second communication unit extracts a polling message according to the first communication method from a message according to the second communication method from the outside, transmits the polling message to the first communication unit, and the first communication unit with respect to the polling message A method of operating a communication device, characterized in that a message by a second communication method using a response from the terminal as data is sent to the outside.

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