JP6087261B2 - Program, end terminal, and end terminal state determination method - Google Patents

Description

  The present invention relates to a program for determining an end terminal usage state in a home network, the end terminal, and a method thereof.

  In recent years, with the spread of services using broadband networks, many end terminals such as personal computers, smartphones, tablets, game machines, and television receivers are connected to the home network.

  In order to enable ordinary users to easily determine the connection configuration of home networks to which various end terminals belong in this way, the device names of other end terminals connected to the home network from one end terminal (device classification, manufacturing A terminal product compatible with a protocol that can grasp the manufacturer, model name, and model number, for example, HTIP (Home-Network Topology Identifying Protocol), has been spreading.

  In addition, data utilization services have become widespread, and techniques for analyzing user behavior and recommending appropriate new services to users have attracted attention. The service provider wants to grasp the user's preference / behavior characteristics from the usage form of the user's end terminal and recommend a service suitable for the user.

  Conventionally, in order to grasp the usage status of each end terminal in a home network on one end terminal, a program according to an end terminal management protocol such as SNMP (Simple Network Management Protocol) has been used. Since this SNMP-compatible program can distinguish the end terminal state (active state / standby state), it is possible to use the end terminal by setting the standby state and the power-off state that does not respond to SNMP to the unused state. The situation can be grasped (for example, Patent Document 1).

JP 2013-218367 A (refer to paragraph 0007 in particular)

  However, SNMP-compliant programs are expensive to implement, while end terminals connected to the home network generally have low performance, so they are almost not equipped with SNMP, and other end points belonging to the same home network. There is a problem that it is impossible to distinguish whether the terminal is in an active state or a standby state.

  In view of the above-described background, the problem to be solved by the present invention is that the end terminal of the user is in an active state by the end terminal without being equipped with a function corresponding to a special protocol. Or stand-by state.

In order to solve the above problems, the present invention receives an end terminal corresponding to a connection protocol with another node in a home network and a device name specifying protocol from another end terminal in the home network according to the device name specifying protocol. Device information storage means for storing the device name and the average time required for receiving a response when transmitting a specific request according to the connection protocol to the other end terminal in an active state with its own communication processing performance Data acquisition means for acquiring from the database the value (Ton), the average value (Tst) of the time required to receive a response when the specific request is transmitted to the other end terminal in the standby state with its own communication processing performance And sending a specific request according to the connection protocol to the other end terminal until receiving a response to the specific request. Whether the status of the other end terminal is in an active state or a standby state based on a predetermined calculation that compares the closeness of the actual measurement means for measuring time, each of the Ton and Tst, and the measurement result of the actual measurement means. profile grams to function as distinguishing judging means is employed.

  The present invention also includes a step of constructing an experimental home network to which the first and second end terminals corresponding to a connection protocol with other nodes in the home network and a device name specifying protocol belong, and the experimental home network An average value (Ton) of the time required for receiving a response when the first end terminal transmits a specific request according to the connection protocol to the second end terminal in an active state, Average value (Tst) of time required for receiving a response when the first end terminal transmits the specific request to the second end terminal in the standby state, communication processing of the first end terminal A determination data creation step for creating a database in which the model information indicating the performance and the device name of the second end terminal are stored in association with each other; A device information storing step for storing a device name received by an end terminal from another end terminal in accordance with the device name specifying protocol in the user's home network; and in the user's home network, the end terminal The data acquisition step of acquiring the Ton and Tst corresponding to the model information and the device name of the separate end terminal from the database, and the end terminal to the separate end terminal in the user's home network An actual measurement step of transmitting a request and measuring a time taken to receive a response to the request; and the closeness of each of the Ton and Tst and the measurement result of the actual measurement step in the user's home network by the end terminal Based on a predetermined calculation of the content to be compared, the status of the other end terminal is activated End terminal state determination method comprising the states or distinguishing determination step or standby state, it was adopted.

  In addition, the present invention employs an end terminal in which a program for functioning as the determination unit or the like is installed.

The connection protocol is naturally implemented for causing the end terminal to function as a node of the home network, such as an Internet control notification protocol and an address resolution protocol, and is not a special implementation. The device name specifying protocol is also becoming popular as described in the background above, and is not a special implementation.
Even a low-performance end terminal responds to a connection protocol specific request, but the connection protocol is a protocol that only checks the connectivity of the network. Only the state can be distinguished.
In the present invention, the standby state refers to a state in which power consumption is suppressed but power consumption can be suppressed because the end terminal is not used for a long period of time. The active state refers to a state in which a response to the specific request and a response to acceptance of user use can be made earlier than in the standby state, but power consumption is higher than in the standby state. At the time of filing of the present application, there is a social situation in which there are many products that respond to a specific request even if the device is compatible with a connection protocol and a device name specifying protocol even in a standby state.
For these products, the database can be constructed by examining the Ton and the like between end terminals corresponding to the connection protocol and the device name specifying protocol in advance experimentally. The user's end terminal can acquire Ton, Tst, etc., which serve as a standard for distinguishing whether another end terminal belonging to the same home network is in an active state or a standby state.
The configuration difference between the experimental home network and the actual user's home network that wants to know the terminal usage status of the user should be matched by using Ton or the like that equalizes the communication processing performance of the end terminal that is the transmission source of the specific request. Can do.
In this way, in the actual user's home network, the end terminal transmits the specific request to the other end terminal, measures the time until receiving a response to the specific request, and obtains the result and a preliminary experiment. If a predetermined calculation is performed to compare whether it is closer to Ton or Tst, it is possible to distinguish the active state or the standby state from the result with a certain degree of reliability.

  Therefore, the present invention makes it possible to distinguish whether another end terminal belonging to the same home network is in an active state or a standby state by the end terminal without implementing a function corresponding to a special protocol at the end terminal of the user. Can do.

Flowchart diagram of end terminal state determination according to the embodiment Configuration diagram of an experimental home network according to the embodiment Conceptual diagram of database according to the embodiment The conceptual diagram which shows the end terminal group which belongs to the user's home network based on an Example Functional block diagram realized on the user's end terminal by the program according to the embodiment FIG. 4 is a sequence diagram when performing state determination on another end terminal in the home network of FIG.

  Hereinafter, preferred embodiments of the present invention will be described. Here, in the present invention, Tsl is a time until the another end terminal automatically shifts from the active state to the standby state.

  The first embodiment is a program, and the second embodiment is an end terminal state determination method. The actual measurement unit according to the first embodiment or the end terminal in the actual measurement step according to the second embodiment transmits the first specific request to the other end terminal, and from this transmission, the end request is less than the Tsl. The second specific request is transmitted to the other end terminal within the elapsed time, the time (Tr) until receiving a response to the second specific request is measured, and the elapsed time exceeding Tsl from the transmission of the second specific request Later, the third specific request is transmitted to the other end terminal, and the time (T) until the response is received is measured. The determination unit according to the first embodiment, or the end terminal in the determination step according to the second embodiment, each of the Ton and the Tst, and a value from the T (the Tr−the Ton) ( The distinction is made based on a predetermined calculation of the content for comparing the closeness with the difference obtained by subtracting Tnw).

  Even if another end terminal that is an object of determination by the end terminal is in a standby state, it can be brought into an active state by the first specific request. Thereafter, since the other end terminal transmits a response to the second specific request before shifting to the standby state, it is possible to always measure the response time in the active state as Tr. Tnw obtained by subtracting Ton from Tr is a value indicating the network delay of the user environment. Since the third specific request is transmitted after Tsl has passed since the transmission of the second specific request, after the other end terminal sends a response to the second specific request, the other end terminal is in the standby state when there is no user use. Transition to the state. For this reason, T can be regarded as a time until receiving a response indicating an actual user usage situation. Therefore, in the first embodiment and the second embodiment, since the transmission delay time difference Tnw due to the difference between the user environment and the average model is reflected in the T indicating the actual user usage situation, the comparison is performed more reliably. It is possible to distinguish between a state and a standby state.

  The third embodiment is a program, and the fourth embodiment is an end terminal state determination method. The end terminal in the data acquisition unit according to the third embodiment or the data acquisition unit step according to the fourth embodiment further calculates the standard deviation (σon) of Ton and the standard deviation (σst) of Tst. get. In the determination unit according to the first embodiment or the end terminal in the determination step according to the second embodiment, the calculated values of (Ton + σon) and (Tst−σst) and the T The distinction is made on the basis of a predetermined calculation for comparing the closeness with the difference obtained by subtracting Tnw from.

  σon indicates the degree of variation in the population in the active state for obtaining Ton. For this reason, (Ton + σon) determines the determination criterion for the one that requires a relatively long time for receiving a response even in the active state, that is, the one that is closer to the standby state. On the other hand, σst indicates the degree of variation in the standby state population for obtaining Tst. For this reason, even when in the (Tst−σst) standby state, the determination criterion is set to a direction that does not require a relatively long time for receiving a response, that is, a direction closer to that in the active state. Therefore, the third embodiment and the fourth embodiment can more reliably distinguish between the active state and the standby state.

  The fifth embodiment is a program. In the fifth embodiment, the device information storage unit stores device names for all other end terminals corresponding to the device name specifying protocol in the home network. The actual measurement means and the determination means repeat the distinction with each of the other end terminals as the different end terminals. The device information storage unit stores the discrimination result for each of the other end terminals.

  If the program of the fifth embodiment is installed in the user's end terminal, the distinction result between the active state and the standby state is repeated for every other end terminal having compatibility in the home network, and the end terminal unit is repeated. Since the data is stored, the user can estimate the usage status of each other end terminal.

Embodiments of the present invention will be described below with reference to the accompanying drawings.
The end terminal state determination method according to the embodiment includes a step of constructing an experimental home network, a determination data creation step, a device information storage step, a data acquisition step, an actual measurement step, and a determination step.

  In the present invention, the “home network” refers to a local area network under a line terminating device connected to an access network lead-in line. An “end terminal” is a node in a home network that holds an IP (Internet Protocol) address and terminates an IP packet.

  The experimental home network includes the first and second end terminals corresponding to the connection protocol with other nodes in the home network and the device name specifying protocol. As shown in FIG. 2, the experimental home network of the embodiment is composed of first and second end terminals 1, 2, a router 3, and a transmission medium 4. The experimental home network is preferably configured as simple as possible in order to clarify as much as possible the causal relationship between the transmission delay between end terminals and the end terminal state (active state / standby state) of the transmission destination.

  Examples of the connection protocol include ICMP (Internet Control Message Protocol) and ARP (Address Resolution Protocol). ICMP and ARP send a request message, and the receiving end terminal receives a reply message to confirm the connection. The time from the transmission to the reception is called RTT (Round Trip Time). ICMP is used for notification of errors in datagram processing of the Internet protocol and notification of communication information. ARP dynamically assigns the corresponding MAC address from the IP address in the Ethernet environment. It is used to get. ICMP has an RTT measurement function. The embodiment employs ICMP as a connection protocol in order to utilize the RTT measurement function of ICMP.

  Examples of the device name specifying protocol include HTIP and UPnP (Universal Plug and Play).

  In the determination data creation step, a database is created. For this creation, the average time required for receiving a response when the first end terminal transmits a specific request according to the connection protocol to the second end terminal in the active state in the experimental home network. A value is obtained (hereinafter, this average value is referred to as Ton). In the embodiment, Ping is adopted in the ICMP request message as the specific request, and reception of a reply message corresponding to Ping is adopted as the response reception (the same applies hereinafter).

  Further, in the experimental home network, the average value of the time required for the first end terminal 1 to receive a response when the specific request is transmitted to the second end terminal 2 in the standby state is obtained (hereinafter referred to as “this”). The average value is called Tst).

  Ton and Tst are obtained for each combination of the model used as the first end terminal 1 and the model used as the second end terminal 2. Ton measures the time until the second end terminal 2 transmits a specific request to the second end terminal 2 and receives this response n seconds after the second end terminal 2 becomes active. Perform an experiment. A population for obtaining Ton is obtained by repeating the experiment while shifting the value of n at an appropriate interval. For Tst, a population is obtained by repeating an experiment in which the value of n is similarly shifted from the time when the second end terminal 2 enters the standby state. The confirmation of when the second end terminal 2 is in the active state or the standby state is performed by an appropriate method such as, for example, measurement of power consumption, visual confirmation of switching on / off of the screen. Further, from this confirmation, it is possible to know the time until the end terminal 2 automatically shifts from the active state to the standby state (hereinafter, this time is referred to as Tsl).

  Also, σon, which is a standard deviation, can be obtained from the population from which Ton is obtained, and σst, which is a standard deviation, can be obtained from the population from which Tst is obtained.

  In the case where the second end terminal 2 is a mobile communication device such as a smartphone, for example, Ping is returned immediately after shifting to the standby state (screen is turned off), but the response takes longer than in the active state. Ton and σon have values of several tens of milliseconds, but Tst and σst may have values of several hundred milliseconds and about 100 milliseconds. Also, within a few minutes after entering the standby state, the response to Ping takes more time, and the CPU starts up and responds to ICMP about 5 seconds after the Ping transmission. In the case of such a second end terminal 2, it is possible to specify the state of the device (active state / standby state) from the time until the response of the response confirmation packet such as ICMP or ARP is received.

  The database holds Ton, Tst, σon, σst, model information indicating the communication processing performance of the first end terminal, and the device name of the second end terminal in association with each other. As illustrated conceptually in FIG. 3, the following data (experiment data) items can be stored as one record. Item: CPU performance is the drive frequency of the central processing unit of the first end terminal 1. Item: Device name is the device name of the second end terminal 2 notified by the device name specifying protocol. The device name is an information aggregate of a category defined in the protocol, a manufacturer name, and a model name. The model information indicating the communication processing performance of the end terminal is an information aggregate of device name and CPU performance. Note that when the model name alone or the model number alone indicates model information indicating the communication processing performance of the end terminal, such as when the model number is different for each CPU performance even with the same model name, that single information is used as model information. It can also be used. The item: Ton · σon is the value of Ton and the value of σon in the second end terminal 2. The item: Tst · σst is a value of Tst and a value of σst in the second end terminal 2. Item: Tsl is the value of Tsl in the second end terminal 2.

  The database may be created on the service provider side or on the user side. When the service provider creates the database, the means for providing the database to the user adopts an appropriate mode such as downloading the installation program via the Internet or distributing the recording medium, accessing the database server on the Internet, etc. Can do.

  The database of the embodiment is created on the service provider side and provided to the user.

  As illustrated in FIG. 4, in addition to the end terminal 10, end terminals 20 and 21 belong to the user's home network. Each end terminal 10, 20, 21 is composed of a device corresponding to a protocol for connection with other nodes in the home network and a device name specifying protocol. The connection protocol and the device name identification protocol correspond to the first end terminal and the second end terminal described above. With the device name identification protocol, it is possible to grasp the device names (device classification, manufacturer, model name, model number) of the other end terminals 20 and 21 connected to the home network from the end terminal 10. The device name identification protocol only needs to be able to know the device name of another end terminal so that it matches the device name in the database.

  The program of the embodiment is installed in the end terminal 10 connected in the user's home network. As shown in FIG. 5, this program is for causing the end terminal 10 to function as device information storage means 11, data acquisition means 12, actual measurement means 13, and determination means 14. Thus, the usage status of the different end terminals 20 and 21 connected to the home network is estimated. The usage status is information that summarizes information on whether or not the end terminal is in an active state or a standby state at a certain moment, that is, whether or not the user is using it on a time axis. Hereinafter, the end terminal 20 will be described as a representative example as another end terminal.

  The program and database according to the embodiment are installed in the end terminal 10.

  The device information storage unit 11 executes a device information storage step, and stores a device name received from another end terminal 20 in the home network according to a device name specifying protocol.

  The data acquisition unit 12 executes a data acquisition step, and is an average value of the time required to receive a response when a specific request is transmitted to another end terminal 20 in an active state with its own communication processing performance, that is, Ton corresponding to the combination of the own model information and the device name of the separate end terminal 20 is acquired from the database. Note that the model information of the device itself (end terminal 10) is stored in advance in the storage device for the device name etc. in order to support the device name identification protocol.

  Further, the data acquisition means 12 has an average value of the time required to receive a response when a specific request is transmitted to another end terminal 20 in the standby state with its own communication processing performance, that is, its own model information and another end Tst corresponding to the combination of the device names of the terminal 20 is acquired from the database.

  Further, the data acquisition unit 12 acquires σon corresponding to the acquired Ton and σst corresponding to the acquired Tst.

  Further, the data acquisition unit 12 acquires Tsl corresponding to its own model information and the device name of the separate end terminal 20.

  The actual measurement means 13 performs an actual measurement step, transmits a specific request according to the connection protocol to another end terminal 20, and measures the time until receiving a response to the specific request.

  The actual measurement means 13 of the embodiment transmits a first specific request to the other end terminal 20 at a predetermined timing. Next, the actual measurement means 13 transmits the second specific request to the other end terminal 20 within the elapsed time less than Tsl of the other end terminal 20 from this transmission, and measures the time until receiving the response to the second specific request (hereinafter, referred to as the following). This measurement time is referred to as Tr). Next, the actual measurement means 13 transmits the third specific request to the other end terminal 20 after the elapse of the time exceeding the Tsl of the other end terminal 20 from the transmission of the second specific request, and the time until receiving the response to the third specific request. (Hereinafter, this measurement time is referred to as T).

  In order to satisfy the transmission purpose of the second specific request and the third specific request in the different end terminals 20 and 21 of various models, the transmission intervals of the first and second specific requests, the second and third specific requests The transmission intervals are preferably short intervals of about 1 second each. In the embodiment, by adopting a transmission interval of (Tsl + 1) seconds, it is possible to secure a time margin for ensuring the transition between the active state / standby state in various different end terminals 20 and 21, The program is simplified.

  The actual measurement means 13 of the embodiment measures Tr and T by utilizing the RTT measurement function of ICMP.

  The determination unit 14 executes a determination step. Based on a predetermined calculation of the content for comparing the closeness between each of the acquired Ton and Tst and the measurement result of the actual measurement unit 13, the determination unit 14 Distinguishes the state from active state to standby state.

As the predetermined calculation, the embodiment employs the following expression 1.
(Expression 1) = | (T−Tnw) − (Ton + σon) |> | (T−Tnw) − (Tst + σst) |
Here, Tnw is a value obtained by subtracting acquired Ton from Tr. The determination means 14 calculates Tnw by the calculation of (Tr−Ton), and then performs the calculation of Expression 1. Therefore, the acquisition timing of the data acquisition unit 12 can be set as appropriate as long as Ton and the like necessary until the calculation of Expression 1 can be acquired from the database.

  That is, the determination unit 14 of the embodiment calculates each of Ton and Tst and Tnw from Tn according to the calculation element | (T) − (Ton) |> | (T) − (Tst) | It can be said that the distinction is made based on a predetermined calculation of the content for comparing the closeness with the reduced difference.

  Further, the determination means 14 of the embodiment uses the calculation element of | (T−Tnw) − (Ton) |> | (T−Tnw) − (Tst) | It can be said that the distinction is made based on a predetermined calculation of the content for comparing the closeness with the difference obtained by subtracting Tnw from T.

  Further, the determination unit 14 according to the embodiment performs a predetermined calculation with a content for comparing the closeness of the calculated values of (Ton + σon) and (Tst−σst) with the difference obtained by subtracting Tnw from T based on the entire expression 1. It can be said that the distinction is made based on the above. In the embodiment, only the entire expression 1 is distinguished, but the above-described calculation elements are calculated for each piece, and further, the consistency of the results is determined between the respective determination results obtained by the calculation of expression 1 and the like. You may do it.

  The device information storage unit 11 stores device names for all other end terminals 20 and 21 that support the device name identification protocol in the home network. The actual measurement means 13 and the determination means 14 repeat the above-mentioned distinction by setting each of the other end terminals 20 and 21 as another end terminal in a predetermined order. The predetermined order is, for example, the order of registration in the device information storage unit 11 and the order of confirmation of responses. The device information storage unit 11 stores the discrimination result by the determination unit 14 for each of the other end terminals 20 and 21.

  The detailed operation of each means in the embodiment will be described below with reference to FIGS. First, the device information storage unit 11 receives an information collection command (S1). This instruction may be automatically given from this program after the installation is completed, or may be transmitted from the service provider via the Internet, or may be sent to the user's home network as a new other end. Each time a terminal is added, it may be automatically given from this program.

  Upon receiving the command, the device information storage unit 11 generates a device name specifying packet whose destination is a broadcast address, passes it to the transmission unit in the end terminal 10, and transmits the packet from the transmission unit. The device information accumulating unit 11 receives response packets from the other end terminals 20 and 21 by the receiving unit, and identifies the device names of the other end terminals 20 and 21. The device information storage unit 11 registers the collected device name information in the device name storage unit. The device information accumulating unit 11 determines the device name from the ARP table of the end terminal 10 until the number of IP addresses assigned to the home network is ascertained and the device names can be collected. (S2 to S3). The device information storage unit 11 notifies the data acquisition unit 12 every time a new device name is registered.

  The data acquisition unit 12 acquires necessary information of a local address (for example, a local IP address or a MAC address) such as the registered device name, Ton, and Tst of the other end terminal 20 from the device name storage unit. The data acquisition unit 12 passes the acquired local address to the actual measurement unit 13.

  The actual measurement means 13 starts checking the status of all other end terminals (S4). Here, the actual measurement means 13 manages to perform predetermined measurement for all other end terminals as one round. This management is performed by temporarily storing measurement execution history information in a memory. The measurement means 13 measures the other end terminals corresponding to the next confirmation order when the other end terminals that have not completed the state check for the lap have remained “N” (S4, S6). On the other hand, when the state check of all other end terminals has been completed for the lap, the actual measurement means 13 clears the memory of the execution history information, and measures again from the other end terminals corresponding to the head of the check order. Perform (S4, S5, S6). The management of status confirmation may be determined with reference to the measurement result of the actual measurement unit 13 and the discrimination result of the determination unit 14 stored in the device name storage unit of the end terminal 10.

  In S6, the actual measurement means 13 generates two specific request packets addressed to the local addresses passed to the other end terminals, passes them one by one to the transmission unit, and transmits the first specific request from the transmission unit. The second specific request is transmitted from the transmission unit within (Tsl + 1) seconds from the transmission. Then, the actual measurement means stores the packet transmission time at the time of the second specific request (S6a to S6c). The response reception (S6b) for the first specific request is not particularly utilized.

  The actual measurement means 13 receives the response packet for the second specific request by the receiving unit, and measures Tr by subtracting the transmission time stored in S6 from the reception time. The actual measurement means 13 passes the measured Tr to the determination means 14 (S6d).

  The determination unit 14 acquires the model information of the end terminal 10 from the storage unit such as the own device name of the end terminal 10, acquires the Ton corresponding to the CPU having the same performance value from the database via the data acquisition unit 12, and is passed. Tnw is calculated using Tr and acquired Ton, and this value is stored (S7).

  The actual measurement means 13 passes the specific request packet generated in advance after the process of S6 to the transmission unit, and when (Tsl + 1) seconds have elapsed from the transmission time of the second specific request, the transmission unit receives the third specific request. And the transmission time is stored (S8).

  The actual measurement means 13 receives the response packet for the third specific request by the receiving unit, and measures T by subtracting the transmission time stored in S8 from the reception time. The actual measurement means 13 passes the measured Tr and T to the determination means 14 (S9a).

  When the determination unit 14 receives Tr and T from the actual measurement unit 13, the determination unit 14 acquires Ton, Tst, σon, and σst from the data acquisition unit 12 and performs the calculation of Expression 1 (S9).

  Here, in the case of “Y” where | (T−Tnw) − (Ton + σon) |> | (T−Tnw) − (Tst + σst) | is satisfied, the user's home network environment is reflected in the measurement result. Since the value (T-Tnw) means a value closer to the experimental result (Tst + σst) in the standby state, it is distinguished from the other end terminal 20 being in the standby state (S10). On the other hand, when “N” is not established, it means that (T−Tnw) is a value closer to the experimental result (Ton + σon) in the active state, so that it is distinguished from the other end terminal 20 being in the active state. (S11). The determination unit 14 transmits the distinguished state to the device name accumulation unit, and accumulates the distinguished state together with the device name as the accumulated data state in the device name accumulation unit.

  When (Tsl + 1) seconds elapse from the transmission time of the third specific request, the actual measurement unit 13 returns to S4 again and repeats the subsequent processing. That is, in the home network of FIG. 4, the remaining end terminal 21 becomes another end terminal, the end terminal 20 becomes another end terminal, and the state distinction is executed by the end terminal 10 in the same manner. The state confirmation is completed, and the state confirmation is started again in the order of the end terminal 20 and the end terminal 21 again. These repetitions are executed until an information collection end command is received (S4 to S12).

  As described above, the embodiment uses the existing connection protocol such as ICMP / ARP and the device name identification protocol for the terminal 10 without implementing the function corresponding to the special protocol in the end terminal 10, and the terminal 10 10 can distinguish whether the other end terminals 20 and 21 belonging to the same home network are in an active state or a standby state. Since the user's home network environment and the standard deviation of the experimental value are also reflected in the distinction, the embodiment can obtain a distinction result of a particularly reliable state.

  The technical scope of the present invention is not limited to the above-described embodiment, but includes all modifications within the scope of the technical idea based on the description of the scope of claims.

DESCRIPTION OF SYMBOLS 1 1st end terminal 2 2nd end terminal 3 Router 4 Transmission medium 10 End terminal 20, 21 Other end terminals 11 Equipment information storage means 12 Data acquisition means 13 Actual measurement means 14 Determination means

Claims (8)

An end terminal that supports the connection protocol with other nodes in the home network and the device name identification protocol
Device information storage means for storing a device name received according to the device name identification protocol from another end terminal in the home network;
Average value (Ton) of the time required to receive a response when a specific request according to the connection protocol is transmitted to the other end terminal in the active state with its own communication processing performance, Data acquisition means for acquiring, from a database, an average value (Tst) of the time required to receive a response when a specific request is transmitted to the other end terminal in the standby state;
Actual measurement means for transmitting a specific request according to the connection protocol to the other end terminal and measuring a time until receiving a response to the specific request;
In order to function as a determination unit that distinguishes the state of the other end terminal from an active state or a standby state based on a predetermined calculation for comparing the closeness between each of the Ton and Tst and the measurement result of the measurement unit. profile grams. The actual measurement means transmits the first specific request to the other end terminal, and the elapsed end time is less than a time (Tsl) from the transmission until the other end terminal automatically shifts from the active state to the standby state. The second specific request is transmitted to another end terminal, the time (Tr) until receiving a response to the second specific request is measured, and after the time exceeding Tsl from the transmission of the second specific request, the another end terminal is measured. The third specific request is transmitted to the server, and the time (T) until the response is received is measured.
The determination means performs the distinction based on a predetermined calculation for comparing the closeness between each of the Ton and Tst and a difference obtained by subtracting the value (Tnw) of (Tr−Ton) from the T. The program according to claim 1 to be performed. The data acquisition means further acquires a standard deviation (σon) of the Ton and a standard deviation (σst) of the Tst,
The determination means performs the distinction based on a predetermined calculation for comparing the closeness between the calculated values of (Ton + the σon) and (the Tst−the σst) and the difference obtained by subtracting the Tnw from the T. The program according to claim 2 which performs. The device information storage means stores device names for all other end terminals that support the device name specifying protocol in the home network,
The actual measurement means and the determination means repeat the distinction with each of the other end terminals as the different end terminals,
The program according to any one of claims 1 to 3, wherein the device information storage unit stores the discrimination result for each of the other end terminals. Constructing an experimental home network to which the first and second end terminals corresponding to the connection protocol with other nodes in the home network and the device name specifying protocol belong;
Within the experimental home network, the average value of the time required for the first end terminal to receive a response when transmitting a specific request according to the connection protocol to the second end terminal in an active state (Ton), an average value (Tst) of the time required for receiving a response when the first end terminal transmits the specific request to the second end terminal in the standby state, the first end A determination data creation step of creating a database in which the model information indicating the communication processing performance of the terminal and the device name of the second end terminal are stored in association with each other;
In the user's home network, a device information storage step for storing a device name received by an end terminal from another end terminal according to the device name specifying protocol;
In the user's home network, the end terminal acquires the Ton and Tst corresponding to the model information of the user and the device name of the other end terminal from the database; and
In the user's home network, the end terminal transmits the specific request to the other end terminal, and measures the time until receiving a response to the specific request; and
In the user's home network, the end terminal activates the state of the other end terminal based on a predetermined calculation of content that compares the closeness of each of the Ton and Tst with the measurement result of the actual measurement step. An end terminal state determination method comprising: a determination step for distinguishing between a state and a standby state. In the actual measurement step, the end terminal transmits the first specific request to the another end terminal, and is less than a time (Tsl) from this transmission until the other end terminal automatically shifts from the active state to the standby state. The second specific request is transmitted to the other end terminal within the elapsed time, the time (Tr) until receiving a response to the second specific request is measured, and the elapsed time exceeding Tsl from the transmission of the second specific request Later, the third specific request is transmitted to the other end terminal, and the time (T) until the response is received is measured.
In the determination step, the end terminal performs a predetermined calculation for comparing the closeness between each of the Ton and the Tst and a difference obtained by subtracting a value (Tnw) of (Tr−Ton) from the T. The end terminal state determination method according to claim 5, wherein the distinction is performed based on the determination. In the data acquisition step, the end terminal further acquires a standard deviation (σon) of the Ton and a standard deviation (σst) of the Tst,
In the determination step, the end terminal performs a predetermined calculation for comparing the closeness between the calculation values of (Ton + the σon) and (the Tst−the σst) and the difference obtained by subtracting the Tnw from the T The end terminal state determination method according to claim 6, wherein the distinction is performed based on the terminal.   An end terminal in which the program according to any one of claims 1 to 4 is mounted.

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