JP2010109928A - Repeater - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a repeater which restrains a second terminal apparatus switchable between a sleep state and a non-sleep state from unnecessarily waking up. <P>SOLUTION: A repeater 13 for relaying communication between a first terminal unit 11 and a second terminal unit 12 is provided with: a third storage unit 133 for storing an authorization indicative of whether or not transmission of information for waking up the second terminal unit 12 is limited; a third communication means 122 for transmitting information for waking up the second terminal unit 12 when receiving a service requirement message from the first terminal unit 11 in the case where there is no limitation with the foregoing authorization; and a wake-up authorization resister means 138 for giving the foregoing authorization to restrict transmission of information for waking up the second terminal unit 12 when a session establishment decision means 137 decides that the response contents of a response message received from the second terminal unit 12 are not the normal response contents. <P>COPYRIGHT: (C)2010,JPO&INPIT

Description

  The present invention relates to a relay device that mediates communication with a terminal device that can be switched to a sleep state.

  For example, when the service is provided by the terminal device, the power is supplied to only a part of the terminal device except for a certain time such as when the service is being provided. There is a terminal device that can be switched between a sleep state and a non-sleep state, which achieves low power consumption by setting the “non-sleep state” by supplying power to the entire terminal device only at a fixed time.

  However, since terminal devices that can be switched between a sleep state and a non-sleep state connected to the network are frequently accessed from other terminal devices connected to the network, the terminal devices that are in the sleep state are immediately in the non-sleep state. It is difficult to maintain the sleep state for a long time. Therefore, the purpose of reducing power consumption cannot be sufficiently achieved.

  As a technique for solving such a problem, for example, there is a technique described in Patent Document 1. According to this technique, when a relay device having a database that stores a correspondence relationship between a message and a response message thereof receives a message addressed to a terminal device in a sleep state, the message and a response message corresponding to the message Is stored in the database, a response message corresponding to the message is transmitted to the message transmission source instead of the terminal device in the sleep state. Only when the message is not stored in the database, the message may be transferred to the terminal device to put the terminal device in the sleep state into the non-sleep state. According to this technique, since the relay device makes a proxy response to the message stored in the database of the relay device, the number of times that the terminal device in the sleep state transitions to the non-sleep state can be reduced.

  However, in this technique, if the message is not stored in the relay device, the message is from a terminal device that cannot respond normally when the terminal device that can be switched between the sleep state and the non-sleep state is in the non-sleep state. However, the sleep state is set to the non-sleep state, and the terminal device in the sleep state is unnecessarily woken up.

For this reason, it becomes difficult for the terminal device to maintain the sleep state for a long time, and low power consumption cannot be achieved effectively.
JP 2000-165419 A

  According to the relay device of the present invention, when a terminal device that can be switched between the sleep state and the non-sleep state is in the non-sleep state, when the terminal device receives a message from the other terminal device that cannot respond normally. Does not wake up the terminal device in the sleep state.

  In order to achieve the above object, a relay device according to an embodiment of the present invention performs communication between a first terminal device and a second terminal device capable of switching between a sleep state and a non-sleep state. A relay device that relays a service request message including a service request content from the first terminal device to the second terminal device, and from the second terminal device to the first terminal device Whether to restrict transmission of information for switching from a sleep state to a non-sleep state to the first communication unit that receives a response message including a response content to the service request content A first storage means for storing the authority indicating the above, and when the service request message is received from the first terminal device when the authority is not limited, the second terminal device Second communication means for transmitting information for switching the sleep state from the sleep state to the non-sleep state to the second terminal device, a determination means for determining whether the response content is a normal response content, If the determination means determines that the response content is not normal, the authority is assumed to restrict transmission of information for switching the second terminal device from a sleep state to a non-sleep state in the first storage means. Registration means for registering.

  A relay device according to an embodiment of the present invention is a relay device that relays communication between a first terminal device and a second terminal device capable of switching between a sleep state and a non-sleep state. Receiving a service request message including a service request content from the first terminal device to the second terminal device, and responding to the service request message from the second terminal device to the first terminal device A first communication means for receiving a response message including contents and an authority indicating whether or not to restrict transmission of information for switching from a sleep state to a non-sleep state is stored for the second terminal device When the service request message is received from the first terminal device when there is no limitation on the storage means and the authority, the second terminal device is put into a non-sleep state from the sleep state. Second communication means for transmitting information for switching to a loop state to the second terminal apparatus, storage means for storing an upper limit response delay time stored in the second terminal apparatus, and the response message Determining means for determining whether or not the difference between the time at which the service request is received and the time at which the service request is received is larger than the upper limit response delay time; Registration means for registering the authority as limiting the transmission of information for switching the device from the sleep state to the non-sleep state.

  According to the relay device of the present invention, the terminal device in the sleep state can be prevented from being unnecessarily woken up, and the terminal device in the sleep state can maintain the sleep state for a long time. Can be achieved.

(First embodiment)
FIG. 1 is a block diagram showing a communication system according to the first embodiment. The communication system according to the present embodiment includes a first terminal device 11 that wants to receive a service, a second terminal device 12 that provides the service, and a relay device 13 that relays a message between the terminal devices.

  The second terminal device 12 is a device that can be switched between a sleep state and a non-sleep state. Here, the sleep state is a state in which high power consumption can be achieved although the function is low compared to the non-sleep state.

  In FIG. 1, only one terminal device 11 that wants to receive service is shown, but a plurality of other terminal devices can access the second terminal device 12.

  In addition, the first terminal device 11, the second terminal device 12, and the relay device 13 communicate with each other through the first communication path 14. Further, the second terminal device 12 and the relay device 13 communicate with each other through the second communication path 15. The first communication path 14 and the second communication path 15 are, for example, wireless communication paths. Note that both the first communication path 14 and the second communication path 15 may be wired communication paths.

  The first terminal device 11 includes a first communication unit 111, a service request unit 112, and a first storage unit 113.

  The first communication unit 111 communicates with the second terminal device 12 and the relay device 13 using the first communication path 14.

  The service request unit 112 is a unit for setting a predetermined service request content and requesting a service by the first communication unit 111.

  Further, the first storage unit 113 stores a first identifier that is an identifier for specifying the first communication unit 111 of the first terminal device 11. The first identifier is necessary and sufficient if it is unique on the first communication path 14 at a certain point in time.

  The second terminal device 12 is a device that makes a service request when a service request that can be provided is received from another terminal device.

  The second terminal apparatus 12 includes a second communication unit 121, a third communication unit 122, a wakeup identifier determination unit 124, a wakeup unit 125, a response unit 123, and a second storage unit 126.

  When the second terminal device is in the sleep state, the second terminal device is in a state in which only the minimum necessary functions can be executed to wake up (switch from the sleep state to the non-sleep state). For example, the second terminal apparatus 12 in the sleep state can execute the third communication unit 122, the wakeup identifier determination unit 124, and the wakeup unit 125. On the other hand, in the non-sleep state, it is a state that can execute functions other than the minimum necessary function for waking up. At least, the second communication unit 121 can send and receive messages to and from the relay device 13 via the first communication path 14, and can provide a service in response to a service request from the first terminal device 11.

  The second communication means 121 is means for performing communication through the first communication path 14 when in the non-sleep state. In the present embodiment, communication is performed with the first terminal device 11 and the relay device 13.

  The third communication unit 122 is a unit that performs communication through the second communication path 15 in the sleep state. In the present embodiment, communication with the relay device 13 is performed.

  The wakeup identifier determination unit 124 stores the wakeup identifier transmitted by the relay device 13 and received by the third communication unit 122 as described later and the second storage unit 126 described later by the second terminal device 12. It is means for determining whether or not the wakeup identifier matches. If they match, the wakeup means 125 is instructed to wake up the second terminal device 12.

  The second storage unit 126 stores the second identifier, the wakeup identifier, the expected service request content, and the normal response content. The second identifier is an identifier that identifies the second communication unit 121 of the second terminal device 12. Similar to the first identifier, the second identifier is necessary and sufficient if it is unique on the first communication path 14 at a certain point in time.

  FIG. 2 shows an example of the wake-up unit 125 according to this embodiment. The wakeup unit 125 includes a relay control unit 1251 that controls connection / disconnection of the power supply line between the power supply unit 127 and the voltage conversion unit 1252, and a voltage supplied from the power supply unit 127 is used as a power supply for the second communication unit 121. A voltage conversion unit 1252 that converts the voltage into a voltage suitable for the input is included. The relay control unit 1251 controls the power supply line to be disconnected in the sleep state. On the other hand, when the wakeup identifier determination means 124 determines that they match, the disconnected power line is switched to the connected state. As a result, the voltage conversion unit 1252 supplies the voltage to the second communication unit 121 to wake up the second communication unit 121 (become a non-sleep state). The relay control unit 1251 energizes other parts (not shown in FIG. 2) of the second terminal device 12 in the non-sleep state. For example, in the non-sleep state, the response means 123 is also energized.

  The response means 123 is a means for setting a response message in response to a service request from the first terminal apparatus 11 and sending the response message by the second communication means 121 in the non-sleep state. The response message is a message including the normal response content stored in the second storage unit 126 when the service request content from the first terminal device 11 can be normally provided. On the other hand, if the service cannot be normally provided in response to the service request from the first terminal device 11, the response content is other than the normal response content. The case where a normal service cannot be provided in response to a service request is, for example, a case where authentication between the first terminal apparatus 11 and the second terminal apparatus 12 fails or an error occurs.

  The relay device 13 includes a communication monitoring unit 131, a fifth communication unit 132, a communication content recording unit 136, a second terminal device registration unit 135, a session establishment registration unit 134, and a session establishment availability determination unit 137. , A wake-up authority registration unit 138, a wake-up identifier selection unit 1310, a wake-up authority confirmation unit, and a third storage unit 133.

  The communication monitoring unit 131 includes a fourth communication unit 1311. The fourth communication unit 1311 is a unit that performs communication through the first communication path 14. In the present embodiment, communication is performed with the first terminal device 11 and the second terminal device 12. The communication monitoring unit 131 is a unit that monitors communication between the first terminal device 11 and the second terminal device 12. The communication monitoring unit 131 includes a unit that analyzes the type of the received message received by the fourth communication unit 1311 and classifies the received message type for each message type.

  The fifth communication means 132 is means for performing communication through the second communication path 15. In the present embodiment, communication with the second terminal device 12 is performed.

  The third storage unit 133 includes a wake-up authority management table 1331, a wake-up identifier management table 1332, a communication content recording table 1333, and a session establishment condition management table 1334.

  The wakeup identifier management table 1332 stores a correspondence relationship between the second identifier and the wakeup identifier. The wake-up identifier is an identifier for causing the second terminal apparatus 12 specified by the second identifier to be woken up.

  The session establishment condition management table 1334 stores a second identifier, expected service request content, and normal response content. The expected service request content and the normal response content are service request content that can be provided by the second terminal device 12 specified by the second identifier, and the normal response content is the second terminal device specified by the second identifier. 12 is a response content that responds when the service is normally provided.

  The communication content record table 1333 stores a first identifier, a second identifier, service request content, and response content. The first identifier and the second identifier are identifiers that identify the first terminal device 11 and the second terminal device 12 that communicate with each other.

  The service request content is a service request content requested by the first terminal device 11 to the second terminal device 12 via the relay device 13. Even if the service request content is in a form that can be read by humans, it has undergone conversion (hashing, compression, etc.) determined in advance between the first terminal device 11, the relay device 13, and the second terminal device 12. It may be.

  The response content is a response content to be transmitted to the first terminal device 11 when the second terminal device 12 provides or cannot provide the service. The response contents when the service can be provided include, for example, information indicating that the data transfer process unique to the service provided by the second terminal device 12 has been successful, the first terminal device 11 and the second terminal device 12. For example, information indicating that the authentication process with the server succeeded. The response content may be in a human-readable format, or may have been subjected to predetermined conversion (hashing, compression, etc.) between the relay device 13 and the second terminal device 12.

  The wake-up authority management table 1331 stores a first identifier, a second identifier, service request contents, and presence / absence of a wake-up authority. The wake-up authority management table 1331 is indicated by the content of the service request for the first terminal device 11 specified by the first identifier that is requested by the second terminal device 12 specified by the second identifier. When the service can be normally provided and the normal response content can be sent to the first terminal device 11, the first identifier, the second identifier, the service request content, and “with wake-up authority” are stored.

  On the other hand, the wake-up authority management table 1331 indicates that the second terminal apparatus 12 cannot normally provide a service to the first terminal apparatus 11, and the response contents that are not normal are displayed to the first terminal apparatus 11. Is stored as “no wake-up authority”.

  The communication content recording unit 136 identifies each of the first terminal device 11 and the second terminal device 12 which are terminal devices that transmit and receive the service request and response content received by the communication monitoring unit 131 and the service request and response content. The first identifier and the second identifier are recorded in the communication content recording table 1333 described above.

  The second terminal device registration unit 135 records the second identifier and the wakeup identifier received by the communication monitoring unit 131 from the second terminal device 12 specified by the second identifier in the wakeup management identifier management table. It is.

  The session establishment registration unit 134 records the second identifier, the expected service request content, and the normal response content received by the communication monitoring unit 131 from the second terminal device 12 specified by the second identifier in the session establishment condition management table 1334. It is means to do.

  The session establishment possibility determination unit 137 compares the communication content recording table 1333 and the session establishment condition management table 1334, and each of the second identifier, service request content, and response content recorded in the communication content recording table 1333 indicates that the session is established. This is means for determining whether or not the second identifier, the expected service request content, and the normal response content stored in the condition management table 1334 match.

  The wake-up authority registration means 138 is a means for recording the first identifier, the second identifier, the contents of the service request, and the presence / absence of the wake-up authority in the wake-up authority management table. When the wakeup authority registration unit 138 determines that the session establishment possibility determination unit 137 matches, the wakeup authority registration unit 138 stores the first identifier, the second identifier, and the service request content recorded in the communication content recording table 1333 in the wakeup authority management table 1331. And “Wake-up authority” is recorded. On the other hand, when the wake-up authority registration unit 138 determines that the session establishment possibility determination unit 137 does not match, the wake-up authority management unit 1331 stores the first identifier and the second identifier recorded in the communication content recording table 1333. Record service request contents and no wake-up authority.

  The wakeup identifier selection unit 1310 refers to the wakeup identifier management table 1332 and is a unit that selects a wakeup identifier corresponding to the second identifier that is the destination identifier included in the service request content received by the communication monitoring unit 131. is there.

  The wake-up authority determination unit 139 refers to the wake-up authority management table 1331 and stores the first identifier, the second identifier, and the service request content of the service request message received by the communication monitoring unit 131 in the wake-up authority management table 1331. It is means for determining whether or not there is a wake-up authority for the first identifier, the second identifier, and the service request contents when stored, not stored, and stored. In addition, as a case where the first identifier, the second identifier, and the service request content of the service request message received by the communication monitoring unit 131 are not stored in the wake-up authority management table 1331, for example, the first identifier specified by the first identifier is used. One terminal apparatus 11 may first transmit a service request message including service request contents to the second terminal apparatus 12 specified by the second identifier via the relay apparatus 13.

  Next, an operation method of the communication system according to the present embodiment will be described. FIG. 3 is a diagram showing an operation flow of the communication system according to the present embodiment. FIG. 4 illustrates a flowchart of the operation method of the relay device 13 according to the present embodiment. FIG. 5 is a diagram illustrating a flowchart of the operation method of the second terminal apparatus 12 according to the present embodiment.

  First, the second terminal apparatus 12 in the non-sleep state transmits a session establishment condition management information message to the relay apparatus 13 through the first communication path 14 by the second communication unit 121 (S201). . FIG. 6 is a diagram illustrating an aspect of the session establishment condition management information message. The session establishment condition management information message is a message in which the left end is the head and the destination identifier (first identifier), source identifier (second identifier), message type, expected service request content, and normal response content are arranged from the head. . The message type is a code indicating that the message content is the expected service request content and the normal response content.

  The second terminal device 12 in the non-sleep state transmits a wakeup identifier management information message to the relay device 13 through the first communication path 14 by the second communication unit 121 (S201). . FIG. 7 is a diagram illustrating an aspect of a wakeup identifier management information message. The wakeup identifier management information message is a message in which the left end is the head and the destination identifier (second identifier), source identifier (first identifier), message type, and wakeup identifier are arranged from the head.

  Thereafter, the second terminal device 12 in the non-sleep state may sleep at an arbitrary timing.

  Next, the fourth communication unit 1311 of the communication monitoring unit 131 of the relay device 13 receives the session establishment condition management information message from the second terminal device 12 through the first communication path 14. Next, the session establishment registration unit 134 registers the second identifier, the expected service request content, and the normal response content extracted by the communication monitoring unit 131 in the session establishment condition management table 1334 (S101).

  Further, the fourth communication unit 1311 of the communication monitoring unit 131 of the relay apparatus 13 receives the wakeup identifier management information message from the second terminal apparatus 12 through the first communication path 14. Next, the second terminal device registration unit 135 registers the second identifier and the wakeup identifier extracted by the communication monitoring unit 131 in the wakeup identifier management table 1332 (S101).

  Next, the first terminal device 11 uses the first communication unit 111 to connect to the first communication path 14 and applies the first identifier to the first communication path 14, thereby Establish communication. Next, the first terminal apparatus 11 sets a service request message by the service request unit 112 and transmits the service request message to the relay apparatus 13 by the first communication unit 111. FIG. 8 is a diagram illustrating an aspect of the service request message. The service request message is, for example, a signal in which the left end is the head and a first identifier that is a transmission source identifier, a second identifier that is a destination identifier, a message type, and service request contents are arranged from the head. Here, the message type is a code indicating that the message is a service request.

  Next, the 4th communication means 1311 of the communication monitoring means 131 of the relay apparatus 13 receives a service request message from the 1st terminal device 11 through the 1st communication path 14 (S102).

  Next, the communication content recording unit 136 extracts the first identifier, the second identifier, and the service request content included in the service request message extracted by the communication monitoring unit 131, and records them in the communication content recording table 1333 (S103).

  Next, the wake-up authority determination unit 139 of the relay device 13 refers to the wake-up authority management table 1331, and the first identifier, the second identifier, and the service request content of the entry newly registered in the communication content recording table 1333. Is determined whether there is a match (S104). If there is a match, it is determined whether or not there is a wake-up authority for the first identifier, the second identifier, and the content of the service request (S105). That is, when there is a service request indicated by the service request content from the first terminal device 11 specified by the first identifier to the second terminal device 12 specified by the second identifier, the relay device 13 It is determined whether or not there is an authority to wake up the second terminal device 12.

  When the wake-up authority determining unit 139 determines that there is a match and determines that there is a wake-up authority, the wake-up selecting unit refers to the wake-up identifier management table 1332 and is included in the service request message. A wake-up identifier corresponding to the second identifier is acquired (S106). Then, the wakeup identifier is transmitted by the fifth communication means 132 through the second communication path 15 (S107). Thereafter, the second terminal apparatus 12 receives the wakeup identifier, and the second terminal apparatus 12 that has woken up transmits a response message to the first terminal apparatus 11. Thereafter, the relay device 13 receives the response message (S108).

  On the other hand, when the wake-up authority determining unit 139 determines that there is a match, and it is determined that there is no wake-up authority, the wake-up identifier selecting unit 1310 of the relay device 13 does not acquire the wake-up identifier (S109). . As a result, the relay device 13 does not perform an operation to wake up the second terminal device 12. Thereafter, the relay device 13 ends the operation. The relay device 13 may transmit an error message indicating that the second terminal device 12 is not authorized to wake up to the first terminal device 11.

  When the wakeup authority determining unit 139 determines that there is no match, the wakeup identifier selecting unit 1310 refers to the wakeup identifier management table 1332 and corresponds to the second identifier included in the service request message. The wakeup identifier to be acquired is acquired (S110). Then, the wakeup identifier is transmitted by the fifth communication means 132 through the second communication path 15 (S111).

  Hereinafter, the operation of the communication system when the wake-up authority determining unit 139 determines that there is no match will be described.

  The second terminal device 12 in the sleep state receives the wake-up identifier from the relay device 13 through the second communication path 15 by the third communication unit 122 (S202).

  Next, the wakeup identifier determination unit 124 determines whether or not the received wakeup identifier matches the wakeup identifier stored in the second storage unit 126 (S203).

  When it is determined that they match, the wakeup identifier determination unit 124 instructs the wakeup unit 125 to wake up the second terminal apparatus 12. Upon receiving the instruction, the wake-up unit 125 wakes up the second terminal device 12 (S204). On the other hand, if they do not match, the wakeup means 125 is not instructed to wake up the second terminal apparatus 12. As a result, if they do not match, the second terminal apparatus 12 does not wake up (S205).

  When the wake-up is performed, the second terminal device 12 in the non-sleep state receives the service request content by the second communication unit 121. Then, the second terminal device 12 tries to provide a service to the first terminal device 11 (S206). As a result, the second terminal device 12 may be able to normally provide a service to the first terminal device 11 or may not be able to normally provide a service.

  After attempting to provide the service, the second terminal device 12 transmits a response message to the first terminal device 11 via the first communication path 111 and the relay device 13 by the first communication unit 111. (S207). FIG. 9 is a diagram illustrating an aspect of a response message. The response message is a message in which the left end is the head and the first identifier that is the destination identifier, the second identifier that is the transmission source identifier, the message type, and the response content are arranged from the head. Here, the response content is response information to the service request content received from the first terminal device 11.

  Next, the relay device 13 receives a response message by the communication monitoring unit 131 (S112). Next, the communication monitoring unit 131 extracts a first identifier that is a destination identifier, a second identifier that is a transmission source identifier, and a response content from the response message. The communication content recording unit 136 then enters the entry of the received response message in an entry in which the first identifier that is the destination identifier of the response message matches the first identifier that is the transmission source identifier recorded in the communication content recording table 1333. Record the response. As a result, one entry of the communication content record table 1333 is completed (S113).

  Next, the session establishment possibility determination unit of the relay device 13 refers to the session establishment condition management table 1334 and refers to the second identifier of one entry of the completed communication content recording table 1333, the service request content, the response content, and the session establishment condition. It is determined whether or not the second identifier, the expected service request content, and the normal response content recorded in the management table 1334 are in the session establishment condition management table 1334 (S114). If there is a match, the first terminal device 11 having the first identifier that made the service request recorded in the completed communication content recording table 1333 has received service normally from the second terminal device 12, and The response content is received. On the other hand, if there is no match, the first terminal device 11 having the first identifier that made the service request recorded in the completed communication content recording table 1333 can receive service provision from the second terminal device 12. The normal response content could not be received from the second terminal device 12.

  When the session establishment possibility determination unit 137 determines that there is a match, the wakeup authority registration unit 138 has the first identifier, the second identifier, the service request content, and the wakeup authority in the wakeup authority management table 1331. The fact is registered (S115). On the other hand, if it is determined that there is no match, the wakeup authority registration unit 138 registers in the wakeup authority management table 1331 that the first identifier, the second identifier, the service request content, and no wakeup authority exist ( S116). When the first terminal device 11 having the first identifier registered to have no wake-up authority makes a service request to the second terminal device 12, as described above, the wake-up authority determining means 139 However, it is determined that there is no wake-up authority for the first terminal device 11, and the first terminal device 11 cannot wake up the second terminal device 12. As a result, the second terminal device 12 is authorized to wake up the second terminal device 12 for the first terminal device 11 that makes a service request that cannot receive the normal response content from the second terminal device 12 after the second time. Can not give. As a result, the second terminal device 12 in the sleep state can be unnecessarily woken up and the second terminal device 12 can be kept in the sleep state for a long time. The low power consumption effect of the device 12 can be improved.

  As described above, according to the communication system according to the present embodiment, the restriction that the second terminal apparatus 12 is not waked up with respect to the first terminal apparatus 11 that has made a service request that the second terminal apparatus 12 cannot provide a service. Since the opportunity to wake up the second terminal apparatus 12 unnecessarily can be reduced, the low power consumption effect of the second terminal apparatus 12 can be improved.

  In the present embodiment, when there is a service request message from the first terminal device 11 to the second terminal device 12, it is determined that the response content to the service request message is not normal response content. Again, when there is a service request message from the first terminal device 11 to the second terminal device 12, the relay device 13 does not wake up the second terminal device 12, Even if it is determined that the response content to the service request message from the first terminal device 11 to the second terminal device 12 is not the normal response content, if the determination is less than a certain number of times, a range less than the certain number of times Then, when there is a service request from the first terminal device 11 to the second terminal device 12 thereafter, the relay device 13 wakes up the second terminal device 12. It may be set to flop. As an example, this can be achieved by introducing a grace number for each combination of the first identifier, the second identifier, and the service request as a parameter related to the wake-up authority registration unit 138. For example, when the number of grace times is 3, even if the session establishment possibility determination unit 137 determines that the response content is not normal, it is not the normal response content for the first identifier, the second identifier, and the service request content. If the determination is within three times, the second terminal apparatus 12 may be waked up.

  Further, in the present embodiment, the function is not particularly limited, but the third communication unit 122 in the sleep state is limited to a function that can receive only a message having characteristics equivalent to the wakeup identifier. You may do it. In this case, for example, the third communication unit 122 in the second terminal device 12 that sleeps transmits a response according to the message received through the second communication path 15 or receives through the second communication path 15. It is not possible to execute advanced processing such as determining whether or not to wake itself up based on the sender identifier of the message. By limiting the third communication unit 122 in this way, power consumption can be further reduced in the sleep state.

(Second Embodiment)
FIG. 11 is a block diagram showing a communication system according to the second embodiment. In the communication system of the present embodiment, as a condition for determining whether or not to give the wake-up authority, the relay device 23 receives the first response message from the time when the response message from the second terminal device 22 to the first terminal device 21 is received. The difference from the first embodiment is that the difference time obtained by subtracting the time when the service request from the terminal device 21 to the second terminal device 22 is received is larger than the upper limit response delay time. That is, in the communication system of the present embodiment, the wake-up authority is not given when the difference time is larger than the upper limit response delay time, and the wake-up authority is given when it is smaller than the upper limit response delay time.

  The communication system according to the present embodiment includes a first terminal device 21, a relay device 23, and a second terminal device 22, as in the first embodiment. Similarly to the first embodiment, the first terminal device 21, the second terminal device 22, and the relay device 23 communicate with each other through the first communication path 14. In addition, the second terminal device 22 and the relay device 23 communicate with each other through the second communication path 15.

  In addition, the first terminal device 21 includes a first communication unit 211, a service request unit 212, and a first storage unit 213, as in the first embodiment. Similarly to the first embodiment, the second terminal device 22 includes the second communication unit 221, the third communication unit 222, the response unit 223, the wakeup identifier determination unit 224, the wakeup unit 225, 2 storage units 226. Similarly to the first embodiment, the relay device 23 includes a communication monitoring unit 231, a session establishment registration unit 234, a second terminal device registration unit 235, a communication content recording unit 236, and a session establishment possibility determination. A means 237, a wakeup authority registration means 238, a wakeup authority determination means 239, a wakeup identifier determination means 224, a fifth communication means 232, and a third storage unit 233 are provided. As in the first embodiment, the third storage unit 233 includes a wake-up authority management table 2331, a communication content recording table 2333, a wake-up identifier management table 2332, and a session establishment condition management table 2334. Prepare.

  Hereinafter, a configuration different from that of the first embodiment will be described for each device.

  The second storage unit 226 of the second terminal device 22 is different from the second storage unit 226 according to the first embodiment in that the upper limit response delay time is further stored. Here, the upper limit response delay time is, for example, the time it takes for the second terminal device 22 in the sleep state to transmit a response message after waking up. The upper limit response delay time must be set to a fixed time. For example, the upper limit response delay time is, for example, a method that is set in advance by the administrator of the second terminal device 22, or a method that sets the time required to wake up when the second terminal device 22 wakes up. Alternatively, there is a method of setting the sum of the time required to wake up and the time from when the service request message is received until the response message is transmitted.

  The communication content recording table 2333 of the third storage unit 233 of the relay device 23 is different from the communication content recording table 2333 according to the first embodiment in that the service request time and the response time are further stored.

  The session establishment condition management table 2334 of the relay device 23 is different from the session establishment condition management table 2334 according to the first embodiment in that the upper limit response delay time is further stored.

  Next, an operation method of the communication system according to the present embodiment will be described. FIG. 12 is a diagram illustrating a flowchart of the operation method of the relay device 23 according to the present embodiment.

  Hereinafter, differences from the operation method of the communication system according to the first embodiment will be described in detail, and the same points as the operation method of the communication system according to the first embodiment will be omitted as appropriate. .

  First, the second terminal device 22 in the non-sleep state transmits a session establishment condition management information message through the first communication path 14 to the relay device 23 by the second communication unit 221. FIG. 10 is a diagram illustrating an aspect of the session establishment condition management information message. The session establishment condition management information message is a message including an upper limit response delay time in addition to a destination identifier (first identifier), a transmission source identifier (second identifier), a message type, an expected service request content, and a normal response content. is there.

  In addition, the second terminal device 22 in the non-sleep state transmits a wakeup identifier management information message to the relay device 23 through the first communication path 14 by the second communication unit 221. The wakeup identifier management information message is a message similar to the wakeup identifier management information message according to the first embodiment.

  Next, the fourth communication unit 2311 of the communication monitoring unit 231 of the relay device 23 receives the session establishment condition management information message from the second terminal device 22 through the first communication path 14. Next, the session establishment registration unit 234 registers the second identifier, expected service request content, normal response content, and upper limit response delay time extracted by the communication monitoring unit 231 in the session establishment condition management table 2334 (S301). ).

  Similarly to the first embodiment, the fourth communication unit 2311 of the communication monitoring unit 231 of the relay device 23 receives the wakeup identifier management information message, and the second terminal device registration unit 235 receives the second The identifier and the wakeup identifier are registered in the wakeup identifier management table 2332 (S301).

  Next, the first terminal device 21 that has established communication with the relay device 23 transmits a service request message to the relay device 23 by the first communication unit 211 as in the first embodiment.

  Next, the 4th communication means 2311 of the communication monitoring means 231 of the relay apparatus 23 receives a service request message similarly to 1st Embodiment (S302). In addition to the first identifier, the second identifier, and the service request content, the communication monitoring unit 231 further extracts the time when the service request message was received and communicated (hereinafter referred to as service request time). Then, the communication content recording unit 236 records the first identifier, the second identifier, the service request content, and the service request time included in the service request message extracted by the communication monitoring unit 231 in the communication content recording table 2333 (S303). ).

  Next, the wake-up authority determining unit 239 of the relay apparatus 23 refers to the wake-up authority management table 2331 and, as in the first embodiment, the first entry newly registered in the communication content recording table 2333. It is determined whether or not there is the same combination as the combination of the identifier, the second identifier, and the service request content (S304). If there is the same combination, whether or not there is a wake-up authority for the combination. Is determined (S305).

  When the wake-up authority determining unit 239 determines that there is a match and determines that there is a wake-up authority, the wake-up selecting unit acquires the wake-up identifier as in the first embodiment. (S306) The wakeup identifier is transmitted through the second communication path 15 by the fifth communication means 232 (S307). Similarly to the first embodiment, after that, the second terminal device 22 that has received the wakeup identifier wakes up and transmits a response message to the relay device 23 and the first terminal device 21. Thereafter, the relay device 23 receives the response message (S308).

  When the wake-up authority determining unit 239 determines that there is a match, and determines that there is no wake-up authority, the relay device 23 uses the second terminal device 22 as in the first embodiment. Is not performed (S309).

  If the wake-up authority determining unit 239 determines that there is no match, the wake-up identifier selecting unit 2310 acquires the wake-up identifier (310) as in the first embodiment, and the wake-up identifier selecting unit 2310 The up identifier is transmitted by the fifth communication means 232 through the second communication path 15 (311).

  Hereinafter, an operation of the communication system when the wake-up authority determining unit 239 determines that there is no match will be described.

  Similar to the first embodiment, the second terminal device 22 in the sleep state receives the wakeup identifier, and the received wakeup identifier matches the wakeup identifier stored in the second storage unit 226. In this case, the second terminal device 22 wakes up. If they do not match, the second terminal device 22 does not wake up, as in the first embodiment.

  When the wake-up is performed, the second terminal device 22 in the non-sleep state attempts to provide a service to the first terminal device 21, and sends a response message to the first terminal device 21 via the relay device 23. Send to.

  Next, the 4th communication means 2311 of the communication monitoring means 231 of the relay apparatus 23 receives a response message similarly to 1st Embodiment (S312). The communication monitoring unit 231 further extracts the response message reception time (hereinafter referred to as response time) in addition to the first identifier as the destination identifier, the second identifier as the transmission source identifier, and the response content from the response message. . The communication content recording unit 236 then adds the first identifier that is the destination identifier of the response message and the entry that matches the first identifier that is the transmission source identifier recorded in the communication content recording table 2333 to the received response message. In addition to the response contents, the response time is recorded. As a result, one entry of the communication content recording table 2333 is completed (S313).

  Next, the session establishment possibility determination unit 237 of the relay device 23, like the first embodiment, manages the second identifier of one entry of the completed communication content record table 2333, the service request content, the response content, and the session establishment condition management. It is determined whether or not the second identifier, the expected service request content, and the normal response content recorded in the table 2334 are in the session establishment condition management table 2334 (S314).

  If there is a match, the session establishment determination unit of the relay device 23 determines that the session establishment determination unit has a difference time obtained by subtracting the service request time from the response time recorded in the communication record table. It is determined whether the upper limit response delay time recorded in the established session establishment condition management table 2334 is larger or smaller (S315).

  When the session establishment determination unit of the relay device 23 determines that the session establishment determination unit is small, the wakeup authority registration unit 238 has the first identifier, the second identifier, the service request content, and the wakeup authority in the wakeup authority management table 2331. The fact is registered (S316). On the other hand, if it is determined that it is larger, the first identifier, the second identifier, the contents of the service request, and the fact that there is no wake-up authority are registered (S317).

  On the other hand, when it is determined that there is no match in the session condition management table, the wakeup authority registration unit 238 does not have the first identifier, the second identifier, the service request content, and the wakeup authority in the wakeup authority management table 2331. The fact is registered (S318).

  As described above, the first terminal apparatus 21 having the first identifier that makes a service request to the second terminal apparatus 22 having the second identifier registered that there is no wake-up authority determines the wake-up authority. The means 239 determines that there is no wake-up authority and cannot wake up the second terminal device 22. As a result, the second terminal device 22 is authorized to wake up the second terminal device 22 to the first terminal device 21 that makes a service request that cannot receive the normal response content from the second terminal device 22 after the second time. Can not give. As a result, the chances of unnecessarily waking up the second terminal device 22 in the sleep state can be reduced, and the sleep state of the second terminal device 22 can be maintained for a long time. The low power consumption effect of the device 22 can be improved.

  In the communication system according to the present embodiment, when the relay device 23 cannot receive a response message within the upper limit response delay time after receiving the service request, the second terminal device 22 is communicated via the relay device 23. Thus, the first terminal device 21 that transmits the service request can be given a restriction that the second terminal device 22 is not woken up. As a result, the second terminal device 22 wakes up only when the time taken until the response time after the wake-up is equal to or shorter than the upper limit response delay time. Therefore, the relay device 23 is connected to the first terminal device 21. Information to be communicated with the second terminal device 22, for example, the time to hold the information recorded in the communication content recording table 2333 may be equal to or shorter than the upper limit response delay time. Increases efficiency. In other words, the time for which the relay device 23 should hold the information recorded in the communication content recording table 2333 can be set in accordance with the upper limit response delay time stored in the second storage unit 226 by the second terminal device 22. The resource utilization efficiency of the relay device 23 is improved. Further, since the upper limit response delay time is determined for each second terminal device, the relay device 23 determines the time for holding the information recorded in the communication content recording table 2333 for each second terminal device. Therefore, the resource utilization efficiency of the relay device 23 is improved. For example, the processing load for managing the communication content recording table 2333 can be reduced, and the memory size for holding the communication content recording table 2333 can be reduced.

  In the present embodiment, the session establishment determination means determines whether the second identifier, service request contents, and response contents recorded in the communication contents recording table 2333 match those recorded in the session establishment condition management table 2334. After determining whether or not the difference time obtained by subtracting the service request time from the response time recorded in the communication record table is greater than or less than the upper limit response delay time recorded in the session establishment condition management table 2334 However, after determining whether the above-described difference time is larger or smaller than the upper limit response delay time, it may be determined whether the second identifier, the service request content, and the response content match.

  In the present embodiment, when there is a service request message from the first terminal device 21 to the second terminal device 22, the difference time between the time of the service request message and the time of the response message is the upper limit response. If it is determined that the delay time is greater than or equal to the delay time, when the service request message is received from the first terminal device 21 to the second terminal device 22 again, the relay device 23 determines that the second terminal device 22 Even if it is determined that the difference time between the service request message from the first terminal device 21 to the second terminal device 22 and the response message is equal to or greater than the upper limit response delay time. If the determination is less than or equal to a certain number of times, a service request from the first terminal device 21 to the second terminal device 22 is subsequently made within the range of the certain number of times or less. , The relay device 13 may set the second terminal device 22 to wake up. As an example, this can be achieved by introducing a grace number for each combination of the first identifier, the second identifier, and the service request as a parameter related to the wake-up authority registration unit 238. For example, when the grace number is 3, even when the session establishment possibility determination unit 237 determines that the difference time is larger than the upper limit response delay time, the first identifier, the second identifier, and the service request content With regard to the second terminal device 22, it may be possible to wake up the second terminal device 22 as long as it is determined that it is within three times that the upper limit response delay time is exceeded.

  Note that the present invention is not limited to the first embodiment and the second embodiment as they are, and can be embodied by modifying the components without departing from the scope of the invention in the implementation stage. Moreover, various inventions can be formed by appropriately combining a plurality of constituent elements disclosed in the first embodiment and the second embodiment. For example, some components may be deleted from all the components shown in the first embodiment and the second embodiment. Furthermore, you may combine the component covering 1st Embodiment and 2nd Embodiment suitably.

  For example, the configurations of the wake-up authority management table, wake-up identifier management table, communication content recording table, and session establishment condition management table in the third storage unit according to each embodiment are not limited to the configurations shown in each embodiment. . For example, the communication content recording table is a table in which the first identifier, the second identifier, and the response content are recorded, and the service request content is not recorded. The session establishment condition management table records the second identifier and the normal response content. Alternatively, a table in which the expected service request content is not recorded may be used. In this case, whether or not the first terminal device specified by the first identifier has the authority to wake up the second terminal device specified by the second identifier is determined based on whether the response content is normal response content. Depending on

  The wake-up authority management table may be a table in which the first identifier, the second identifier, and the presence / absence of the wake-up authority are recorded, and the service request content is not recorded. In this case, the wake-up authority determining means does not depend on the service request by the first terminal device specified by the first identifier, but the second identifier specified by the second identifier for the first terminal device specified by the first identifier. 2 determines whether or not there is an authority to wake up the second terminal device.

  In addition, the operation method in each embodiment is merely an example, and the order of operations may be changed.

  For example, in the first embodiment and the second embodiment, after the wakeup authority determination unit confirms the presence or absence of the wakeup authority, the wakeup identifier selection unit acquires the wakeup identifier depending on the presence or absence of authority, or If not, the wake-up identifier is transmitted to the second terminal device by the fifth communication means. However, the wakeup identifier selection means obtains the wakeup identifier after the wakeup identifier selection means acquires the wakeup authority, and the wakeup identifier authority judgment means determines whether or not the wakeup authority is obtained. The up identifier may be transmitted by the fifth communication means or may not be transmitted.

1 is a block diagram showing a communication system according to a first embodiment. The figure which shows the structure of the wakeup means which concerns on 1st Embodiment. The figure which shows the operation | movement flow of the communication system which concerns on 1st Embodiment. The figure which shows the flowchart of the operating method of the relay apparatus which concerns on 1st Embodiment. The figure which shows the flowchart of the operation | movement method of the 2nd terminal device which concerns on 1st Embodiment. The figure which shows the one aspect | mode of a session establishment condition management information message. The figure which shows the one aspect | mode of a wakeup identifier management information message. The figure which shows the one aspect | mode of a service request message. The figure which shows the one aspect | mode of a response message. The figure which shows the one aspect | mode of a session establishment condition management information message. The block diagram which shows the communication system which concerns on 2nd Embodiment. The figure which shows the flowchart of the operating method of the relay apparatus which concerns on 2nd Embodiment.

Explanation of symbols

11, 21 ... 1st terminal device 111, 211 ... 1st communication means 112, 212 ... Service request means 113, 213 ... 1st memory | storage part 12, 22 ... 2nd Terminal devices 121, 221 ... second communication means 122, 222 ... third communication means 123, 223 ... response means 124, 224 ... wake-up identifier determination means 125, 225 ... Wake-up means 1251 ... relay control unit 1252 ... voltage conversion unit 126, 226 ... second storage unit 127 ... power supply unit 13, 23 ... relay device 131, 231 ... communication monitoring Means 1311, 2311 ... Fourth communication means 132, 232 ... Fifth communication means 133, 233 ... Third storage 1331, 2331 ... Wake-up authority management table 1332 2332 ... Wake-up identifier management tables 1333, 2333 ... Communication content recording tables 1334, 2334 ... Session establishment condition management tables 134, 234 ... Session establishment registration means 135, 235 ... Second terminal Device registration unit 136, 236 ... Communication content recording unit 137, 237 ... Session establishment possibility determination unit 138, 238 ... Wake-up authority registration unit 139, 239 ... Wake-up authority determination unit 1310, 2310 ..Wake-up identifier selection means 14, 24 ... first communication path 15, 25 ... second communication path

Claims (5)

A relay device that relays communication between a first terminal device and a second terminal device capable of switching between a sleep state and a non-sleep state,
The service request message including the service request content from the first terminal device to the second terminal device is received, and the response content to the service request content from the second terminal device to the first terminal device First communication means for receiving a response message including:
First storage means for storing an authority indicating whether or not to restrict transmission of information for switching from a sleep state to a non-sleep state for the second terminal device;
When the service request message is received from the first terminal device when there is no restriction by the authority, information for switching the second terminal device from a sleep state to a non-sleep state is transmitted to the second terminal device. A second communication means for transmitting to;
Determining means for determining whether the response content is normal response content;
If the determination means determines that the response content is not normal, the authority is assumed to restrict transmission of information for switching the second terminal device from a sleep state to a non-sleep state in the first storage means. A relay device comprising: a registration means for registering And a second storage means for storing the expected service request content and the normal response content which is a response to the expected service request content,
The determination means determines whether the response content is a normal response content, whether the combination of the expected service request content and the normal response content matches the combination of the service request content and the response content The relay apparatus according to claim 1, wherein the determination is based on whether or not.   If the number of times that the determination unit determines that the content is not normal response content is equal to or less than a predetermined number of times even if the determination unit determines that the content is not normal response content, the registration unit moves the second terminal device from a sleep state to a non-sleep state The relay apparatus according to claim 1, wherein the authority that restricts transmission of information for switching to a state is not registered. A relay device that relays communication between a first terminal device and a second terminal device capable of switching between a sleep state and a non-sleep state,
The service request message including the service request content from the first terminal device to the second terminal device is received, and the response content to the service request message from the second terminal device to the first terminal device First communication means for receiving a response message including:
Storage means for storing an authority indicating whether to restrict transmission of information for switching from the sleep state to the non-sleep state for the second terminal device;
When the service request message is received from the first terminal device when there is no restriction by the authority, information for switching the second terminal device from a sleep state to a non-sleep state is transmitted to the second terminal device. A second communication means for transmitting to;
Storage means for storing an upper limit response delay time stored in the second terminal device;
Determining means for determining whether a difference between a time at which the response message is received and a time at which the service request is received is greater than the upper limit response delay time;
A relay apparatus comprising: a registering unit that registers the authority as limiting the transmission of information for switching the second terminal device from a sleep state to a non-sleep state when it is determined that the determination unit is large.   The registration unit is configured to switch the second terminal device from a sleep state to a non-sleep state if the number of times determined to be large is equal to or less than a predetermined number even when the determination unit determines that the determination unit is large. The relay apparatus according to claim 4, wherein the authority that restricts transmission of information is not registered.

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