WO2011030636A1 - 情報提供装置及び情報提供方法、無線通信装置及び無線通信方法、コンピューター・プログラム、並びに無線通信システム - Google Patents

情報提供装置及び情報提供方法、無線通信装置及び無線通信方法、コンピューター・プログラム、並びに無線通信システム Download PDF

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Publication number
WO2011030636A1
WO2011030636A1 PCT/JP2010/063165 JP2010063165W WO2011030636A1 WO 2011030636 A1 WO2011030636 A1 WO 2011030636A1 JP 2010063165 W JP2010063165 W JP 2010063165W WO 2011030636 A1 WO2011030636 A1 WO 2011030636A1
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WIPO (PCT)
Prior art keywords
client terminal
communication
information
server
predicted
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Ceased
Application number
PCT/JP2010/063165
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English (en)
French (fr)
Japanese (ja)
Inventor
真一郎 阿部
有沢　繁
臼居　隆志
征二 江坂
修平 園田
高田　昌幸
裕之 山菅
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Sony Corp
Original Assignee
Sony Corp
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Sony Corp filed Critical Sony Corp
Priority to EP10815233.1A priority Critical patent/EP2477419B1/en
Priority to RU2012108639/08A priority patent/RU2012108639A/ru
Priority to CN201080039913.4A priority patent/CN102484771B/zh
Priority to BR112012005151A priority patent/BR112012005151A2/pt
Priority to US13/394,404 priority patent/US9313721B2/en
Publication of WO2011030636A1 publication Critical patent/WO2011030636A1/ja
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W48/00—Access restriction; Network selection; Access point selection
    • H04W48/16—Discovering, processing access restriction or access information
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W52/00—Power management, e.g. Transmission Power Control [TPC] or power classes
    • H04W52/02—Power saving arrangements
    • H04W52/0209—Power saving arrangements in terminal devices
    • H04W52/0251—Power saving arrangements in terminal devices using monitoring of local events, e.g. events related to user activity
    • H04W52/0258—Power saving arrangements in terminal devices using monitoring of local events, e.g. events related to user activity controlling an operation mode according to history or models of usage information, e.g. activity schedule or time of day
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W64/00—Locating users or terminals or network equipment for network management purposes, e.g. mobility management
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02D—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN INFORMATION AND COMMUNICATION TECHNOLOGIES [ICT], I.E. INFORMATION AND COMMUNICATION TECHNOLOGIES AIMING AT THE REDUCTION OF THEIR OWN ENERGY USE
    • Y02D30/00—Reducing energy consumption in communication networks
    • Y02D30/70—Reducing energy consumption in communication networks in wireless communication networks

Definitions

  • the present invention relates to an information providing apparatus and information providing method for providing information to a client terminal for information transfer and synchronization processing with a server connected to a network via a base station or an access point, and the base station or access point
  • the present invention relates to a wireless communication apparatus and a wireless communication method, a computer program, and a wireless communication system that perform information transfer and synchronization processing with a server via a network, and in particular, an offline state that is not connected to a base station or an access point
  • Wireless communication is being used as a technology that eliminates the burden of wiring work in traditional wired communication, and further realizes mobile communication.
  • wireless LAN Local Area Network
  • IEEE The Institute of Electrical and Electronics Engineers 802.11
  • broadband Internet connection services using a wireless LAN represented by “Hot Spot (registered trademark)” have become widespread. That is, base stations or access points are installed in cafes, hotels, fast food, stations, airports, etc., and service areas where the Internet can be used are provided. Users can enjoy services such as access to an IP (Internet Protocol) telephone and WWW (World Wide Web) information space even when they are away from home. For this reason, a wireless LAN function is often installed in many information devices serving as client terminals.
  • IP Internet Protocol
  • a wireless communication system consisting of a server and a client terminal performs information transfer and synchronization processing with each other.
  • client terminals are battery-powered mobile terminals such as mobile phones and PDAs (Personal Digital Assistants), it is preferable to save power by stopping the transceiver during unnecessary time.
  • a scan operation for confirming a network existing at the current position is required.
  • active scan the client terminal periodically senses the access point by transmitting a probe request frame.
  • passive scan the client terminal does not transmit itself, and the awake mode in which the reception state is enabled only when the beacon frame is received from the access point and the sleep mode in which the reception state is disabled. repeat.
  • the passive scan since the transceiver is stopped in the sleep mode, battery consumption can be suppressed. Further, in the power saving mode at the time of passive scanning, it is possible to reduce the number of awakes by thinning out beacon reception and further reduce power consumption.
  • An object of the present invention is to provide an excellent information providing apparatus capable of suitably providing a client terminal with information for performing information transfer and synchronization processing with a server connected to a network via a base station or an access point And an information providing method, a computer program, and a wireless communication system.
  • Another object of the present invention is to provide an excellent wireless communication apparatus, wireless communication method, and computer that can suitably perform information transfer and synchronization processing with a server connected to a network via a base station or an access point. ⁇ To provide a program.
  • a further object of the present invention is to provide an excellent wireless communication apparatus and wireless communication capable of suitably performing information transfer and synchronization processing with a server while reducing power consumption in an offline state not connected to a base station or an access point. It is to provide a method and a computer program.
  • the present application has been made in consideration of the above-described problems, and the invention according to claim 1 is an information providing apparatus that operates as a server in a wireless communication system in which a server and a client terminal transfer and synchronize information with each other by wireless communication.
  • a communication unit that communicates by connecting to a client terminal;
  • a content analysis unit that estimates the destination of the user who owns the client terminal;
  • a movement prediction unit that estimates a current position of the client terminal and predicts a movement route from the current position to the destination;
  • a communication prediction unit that predicts the communication status of the client terminal on the predicted movement path and notifies the client terminal; It is the information provision apparatus which comprises.
  • the information providing apparatus further includes a private content database that holds a user's private content.
  • the content analysis unit is configured to analyze the content of the user's private content held in the private content database and estimate the user's destination based on the obtained action schedule. Yes.
  • the private content referred to here is a schedule, e-mail, and memo pad created or edited by the user.
  • the private content includes the user's action history.
  • the action history is the login ID of the user, the login date and time, the login location, the logoff date and time, the logoff location, the traffic history, the purchase history of various products, the broadcast program and other contents. Viewing history, operation history of various information devices, and the like.
  • the movement estimation part of the information provision apparatus of Claim 1 is comprised so that the said present position may be estimated based on the sensor information acquired from the said client terminal. Yes.
  • the sensor information referred to here is GPS (Global Positioning System) received radio wave information, WiFi base station received signal strength information (RSSI: Receiving Signal) measured at the client terminal. (Strength Indicator) and sensor information that can be used when estimating position information of the client terminal such as acceleration information measured by an acceleration sensor.
  • GPS Global Positioning System
  • RSSI WiFi base station received signal strength information
  • Sensor information that can be used when estimating position information of the client terminal such as acceleration information measured by an acceleration sensor.
  • the movement prediction unit of the information providing apparatus uses the hidden Markov model for the movement route from the estimated current position to the destination. It is configured to be predicted by a learning algorithm.
  • the information providing apparatus described in claim 1 further includes a communication information database that holds communication information of a base station or an access point at each point.
  • the communication prediction unit is configured to predict a connection state between the client terminal and a base station or an access point on the movement route based on the communication information database.
  • the communication information referred to here is the transfer rate or the received radio wave intensity of the base station or access point at each point.
  • the communication predicting unit of the information providing apparatus is configured such that the client terminal cannot connect to any base station or access point on the movement route. When it is predicted that an area exists, it is configured to transmit in advance communication prediction information including an inaccessible state of the client terminal and conditions for connection with the base station or access point of the client terminal. .
  • the communication prediction information referred to here includes an offline prediction position or an offline prediction time at which the client terminal reaches the offline area as information on a connection impossible state
  • the information on the connectable condition includes an online return predicted position or an online return predicted time at which the client terminal returns to the online area.
  • the communication unit of the information providing device is configured such that the communication predicting unit predicts the connection impossible state and the client terminal satisfies the connectable condition. Up to this point, the connection is stopped.
  • the communication unit of the information providing device does not satisfy the connectable condition, but does not satisfy the predetermined condition, the client terminal It is configured to try to connect by releasing the suspension of the connection.
  • the invention according to claim 15 of the present application is A content analysis step to estimate the destination of the user who owns the client terminal; A movement predicting step for estimating a current position of the client terminal and predicting a moving route from the current position to the destination; A communication prediction step of predicting the communication status of the client terminal on the predicted movement path and notifying the client terminal; Is an information providing method.
  • a computer program for executing, on a computer, processing for operating as a server in a wireless communication system in which a server and a client terminal transfer and synchronize information with each other by wireless communication.
  • the computer A communication unit that communicates with a client terminal, Content analysis unit that estimates the destination of the user who owns the client terminal, A movement prediction unit that estimates a current position of the client terminal and predicts a movement route from the current position to the destination; A communication prediction unit that predicts the communication status of the client terminal on the predicted movement path and notifies the client terminal; It is a computer program to function as.
  • the computer program according to claim 16 of the present application defines a computer program written in a computer-readable format so as to realize predetermined processing on a computer.
  • a cooperative operation is exhibited on the computer, and the same effect as the information providing apparatus according to claim 1 of the present application is obtained. be able to.
  • the invention according to claim 17 of the present application is a wireless communication apparatus that operates as a client terminal in a wireless communication system in which a server and a client terminal transfer and synchronize information with each other by wireless communication.
  • a wireless communication device is a wireless communication apparatus that operates as a client terminal in a wireless communication system in which a server and a client terminal transfer and synchronize information with each other by wireless communication.
  • the invention according to claim 18 of the present application is Obtaining a predicted communication status on his travel path; Based on the communication status, controlling wireless communication operation with the base station or access point, and connection operation with the server via the base station or access point; A wireless communication method.
  • the invention according to claim 19 of the present application is a computer program for executing on a computer processing for operating as a client terminal in a wireless communication system in which a server and a client terminal transfer and synchronize information with each other by wireless communication.
  • said computer A communication unit for performing wireless communication with a base station or an access point;
  • the computer program according to claim 19 of the present application defines a computer program written in a computer-readable format so as to realize predetermined processing on a computer.
  • a cooperative operation is exhibited on the computer, and the same operational effect as the wireless communication device according to claim 17 of the present application is obtained. be able to.
  • the invention according to claim 20 of the present application is Estimating a user's destination based on the private content of the user who owns the client terminal, predicting a travel route from the current position of the client terminal to the destination, and the client terminal on the predicted travel route
  • a server that predicts the communication status of the client and notifies the client terminal; Based on the predicted communication status on the movement path, the client terminal that controls the connection operation with the server and the communication operation; Configured to perform information transfer and synchronization between the server and the client terminal, A wireless communication system.
  • system here refers to a logical collection of a plurality of devices (or functional modules that realize specific functions), and each device or functional module is in a single housing. It does not matter whether or not.
  • information for performing information transfer and synchronization processing with a server while reducing power consumption in an offline state not connected to a base station or an access point can be suitably provided to a client terminal.
  • An excellent information providing apparatus and information providing method, computer program, and wireless communication system can be provided.
  • an excellent wireless communication apparatus and wireless communication that can suitably perform information transfer and synchronization processing with a server while reducing power consumption in an offline state not connected to a base station or an access point.
  • a communication method and a computer program can be provided.
  • the client terminal predicts a destination to be moved from now on, predicts a movement route from the current position of the client terminal to the destination, It is possible to predict the position or time at which the client terminal goes off-line on the movement route, and the position or time at which the client terminal returns to the on-line state. Then, by notifying the client terminal of such communication prediction information, the client terminal can reduce power consumption associated with operating a communication function for searching for a base station and an access point when offline. Also. The client terminal can resume the communication function when the predicted online return position or time is reached, and can resume information transfer and synchronization processing with the server.
  • the current position of the client terminal can be specified or estimated based on the sensor information of the client terminal.
  • the travel route from the current position to the destination can be predicted by a learning algorithm using a hidden Markov model.
  • the communication state can be established. In other words, it grasps the transfer rate and radio wave intensity in the service area of each scattered access point, predicts the connection state of the client terminal with the base station or access point on the moving route, and uses this communication prediction information as the client Can be notified to the terminal.
  • a connection impossible state such as an offline predicted position or an offline predicted time when the client terminal reaches the offline area, and an online return when the client terminal returns to the online area.
  • Communication prediction information including a connectable condition such as a predicted position or online return predicted time can be provided to the client.
  • the client terminal returns the communication function when the online return predicted position or time is reached and the connectable condition is satisfied based on the position recognition or the time recognition.
  • the server and the client terminal release the suspension of the connection when the other predetermined condition is satisfied even if the connectable condition is not satisfied. And try to connect.
  • FIG. 1 is a diagram schematically showing a configuration of a communication system according to an embodiment of the present invention.
  • FIG. 2 is a diagram for explaining a procedure of data exchange between the server and the client terminal in the communication system shown in FIG.
  • FIG. 3 is a diagram for explaining a procedure of data exchange between the server and the client terminal in the communication system shown in FIG.
  • FIG. 4 is a diagram for explaining a procedure for exchanging data between the server and the client terminal in the communication system shown in FIG.
  • FIG. 5 is a diagram illustrating an operation example in which the client terminal controls the communication function based on the predicted offline position and the predicted online return position notified from the server.
  • FIG. 1 is a diagram schematically showing a configuration of a communication system according to an embodiment of the present invention.
  • FIG. 2 is a diagram for explaining a procedure of data exchange between the server and the client terminal in the communication system shown in FIG.
  • FIG. 3 is a diagram for explaining a procedure of data exchange between the server and the client terminal in the communication
  • FIG. 6 is a diagram illustrating an operation example in which the client terminal controls the communication function based on the estimated offline time and the estimated online return time notified from the server.
  • FIG. 7 is a diagram illustrating an operation example in which the client terminal controls the communication function without notification of communication information from the server.
  • FIG. 8A is a flowchart (first half) illustrating processing procedures executed by the server and the client terminal for realizing the operations illustrated in FIGS. 5 and 6.
  • FIG. 8B is a flowchart (second half) showing a processing procedure executed by the server and the client terminal for realizing the operations shown in FIG. 5 and FIG.
  • FIG. 9A is a flowchart (first half) showing a processing procedure executed by the server and the client terminal for realizing the operations shown in FIG. 5 and FIG. FIG.
  • FIG. 9B is a flowchart (second half) illustrating processing procedures executed by the server and the client terminal for realizing the operations illustrated in FIGS. 5 and 6.
  • FIG. 10 is a diagram illustrating a configuration example of an information device that operates as a user client terminal.
  • FIG. 11 is a diagram schematically illustrating a functional configuration for the client terminal to transmit private content and sensor information.
  • FIG. 12 is a diagram illustrating a configuration example of an information device that operates as a server.
  • FIG. 13 is a diagram illustrating a configuration example of an information device that operates as a server.
  • FIG. 14 is a diagram illustrating an example of a prediction result of the movement path of the client terminal by the movement prediction algorithm calculation unit 1305.
  • FIG. 15 is a diagram illustrating an offline area determined on the moving route of the client terminal shown in FIG.
  • FIG. 1 schematically shows a configuration of a communication system according to an embodiment of the present invention.
  • information transfer and synchronization are performed between the server and the client terminal.
  • the network of the illustrated communication system includes a wired communication unit connected using a wired cable and a wireless communication unit connected by radio wave communication.
  • the wired communication unit includes, for example, a wired network such as an optical fiber and ADSL (Asymmetric Digital Subscriber Line).
  • the wireless communication unit is composed of WiFi, W-CDMA (Wideband-Code Division Multiple Access), LTE (Long Term Evolution), WiMAX (Worldwide Interoperability Wireless Network, etc.).
  • the wireless communication unit can be connected via a base station or an access point.
  • a server is installed in the wired communication department. Although only one server is illustrated in FIG. 1 for the sake of simplification of the drawing, a plurality of servers can be installed.
  • the server holds all data of a plurality of users and performs processing such as information transfer and synchronization with a plurality of client terminals.
  • the client terminal is connected to the communication system using either a wired communication unit or a wireless communication unit.
  • the client terminal B owned by the user B and the client terminal C owned by the user C are each connected to the communication system by a wired communication unit.
  • the client terminal A owned by the user A and the client terminal D owned by the user D are connected to the wireless communication unit via the nearest base station or access point (AP), respectively.
  • the service area of each base station or access point is an “online area” where the client terminals A and D are online. Further, in an area that is not a service area of any base station or access point, the client terminals A and D are in an offline state and correspond to an “offline area”.
  • New information is transferred from the server to each of the client terminals A to D.
  • each client terminal A to D performs a synchronization process with the server and stores necessary data in a storage device such as its own local disk.
  • a storage device such as its own local disk.
  • the client terminals A and D are battery-powered mobile terminals, and it is preferable to save power by stopping the transmitter / receiver during an unnecessary time such as an offline state that is not accommodated in any service area.
  • the client terminal connected to the server is connected to the wireless communication unit via a base station or an access point.
  • the client terminal When the user logs in to the client terminal, the client terminal transmits the sensor information used for position recognition extracted from the installed sensor to the server (see FIG. 2).
  • Client information such as position information measured based on GPS (Global Positioning System) received radio waves, received signal strength information (RSSI: Receiving Signal Strength Indicator), acceleration information measured by acceleration sensors Sensor information for estimating the position information of the client terminal, or sensor information for estimating the moving state of the client terminal such as an acceleration sensor or an image recognition device.
  • GPS Global Positioning System
  • RSSI Receiving Signal Strength Indicator
  • Sensor information for estimating the position information of the client terminal Sensor information for estimating the position information of the client terminal, or sensor information for estimating the moving state of the client terminal such as an acceleration sensor or an image recognition device.
  • the server has a communication information database for storing communication information transmitted from a plurality of client terminals in the past, and communication states of a plurality of wireless systems with respect to time and place, that is, positions of service areas of scattered access points. It knows the registration map, the transfer rate in each service area, radio wave intensity, etc. as communication information.
  • the server also includes a content analysis algorithm, a movement prediction algorithm, and a communication prediction algorithm.
  • the server estimates the current position or moving state of the client terminal based on the sensor information received from the client terminal.
  • the server analyzes the contents of the client terminal's private contents (text information such as schedules, emails, and notepads, and photographed image information) stored internally as a database based on the content analysis algorithm. Then, by comparing this analysis result with the estimated current position or moving state of the client terminal, the behavior of the client terminal is predicted, that is, the destination where the client terminal will move is predicted.
  • the server calculates the movement path of the client terminal from the current position to the destination based on the movement prediction algorithm.
  • the server compares the predicted movement prediction information (destination, movement route) with the communication information such as the received radio wave intensity of each access point, thereby determining the future communication information of the client terminal. That is, the client terminal connection failure state and connection condition on the movement route are determined.
  • the inaccessible state corresponds to the client terminal being in an offline area where it cannot connect to any base station or access point.
  • the connection condition corresponds to the client terminal moving to an online area where it can connect to any base station or access point.
  • the server determines that there is an inaccessible state, that is, an offline area, on the moving path of the client terminal, the server predicts the inaccessible state of the client terminal and the connectable conditions, and provides communication prediction information including these pieces of information. And transmitted before the client terminal becomes inaccessible (see FIG. 3). Specifically, the server calculates an offline prediction position or an offline prediction time at which the client terminal reaches the offline area as a connection impossible state. Further, the server calculates an online return predicted position or an online return predicted time at which the client terminal returns to the online area through the offline area as a connectable condition. Further, the server stops the connection with the client terminal that is predicted to be in a connection impossible state until the connection condition is satisfied. However, even when the connection condition is not satisfied, the connection with the client terminal may be canceled and the connection with the client terminal may be attempted when other predetermined conditions are satisfied (described later).
  • the client terminal When the client terminal receives the communication prediction information including the predicted position or the predicted time, the client terminal recognizes the current position recognized by its own position recognizing means such as GPS, WiFi, acceleration sensor, etc., or its own time recognizing means. The current time recognized by the server is compared with the predicted offline position or predicted time notified from the server. When the client terminal reaches the inaccessible state, that is, the offline area, the client terminal stops the communication function.
  • its own position recognizing means such as GPS, WiFi, acceleration sensor, etc.
  • the client terminal stops the communication function.
  • the client terminal shall indicate that the communication function is stopped by this system during the period when the communication function is autonomously stopped in the offline area.
  • FIG. 4 shows a state in which an icon indicating the offline state (OFF) is displayed on the upper right of the GUI (Graphical User Interface) screen of the client terminal.
  • the client terminal restores the stopped communication function when the connectable condition is satisfied. Specifically, the client terminal compares the current position by the position recognizing means held by itself or the current time by the time recognizing means with the predicted online return position or the predicted time notified from the server. Restore the stopped communication function. In addition, even when the communicable condition is not satisfied, the client may cancel the stop of the communication function and try to connect to the server when other predetermined conditions are satisfied (described later).
  • the offline area is an area where the client terminal and the server cannot communicate due to reasons such as the client terminal being out of service from any service area.
  • the offline predicted position is a position predicted to reach an offline area on the movement path of the client terminal, and the predicted movement path of the client terminal and the base station or access point stored in the communication information database. It is calculated from the result of comparing the location registration maps.
  • the offline prediction time is a time at which the client terminal moving along the movement route is predicted to reach the offline area. The distance calculated from the offline prediction position and the movement route from the current position and the moving speed of the client terminal. Is calculated from
  • the online area is an area where the client terminal exists within the service area and the client terminal and the server can communicate.
  • the predicted online return position is a position predicted to reach the online area again on the movement path of the client terminal, and the predicted movement path of the client terminal and the base station or access stored in the communication information database. It is calculated from the result of comparing the point location registration maps.
  • the predicted online return time is the time at which the client terminal moving along the moving route is predicted to reach the online area. The estimated time of online return and the distance calculated from the moving route from the current position and the client terminal Calculated from the moving speed.
  • the client terminal can reduce power consumption without intermittent reception in the offline area.
  • offline prediction area when distinguishing from the actual offline area, the offline area and online area based on the server prediction result are respectively referred to as “offline prediction area”, “online prediction area”, and offline prediction area.
  • the position and time at which the mobile phone arrives are called “offline predicted position” and “offline predicted time”, and the position and time to reach the online prediction area are called “online return predicted position” and “online return predicted time”, respectively. I will decide.
  • FIGS. 5 and 6 show examples of operations in which the client terminal controls its own communication function based on the communication prediction information notified from the server.
  • FIG. 7 shows an operation example in which the client terminal controls the communication function without notification of communication information from the server, in comparison with FIGS. 5 and 6.
  • the server notifies the client terminal of the offline predicted position and the online return predicted position as communication prediction information.
  • the client terminal When the client terminal receives the communication prediction information, the client terminal compares the current position recognized by the position recognition means possessed by the client terminal with the notified offline predicted position. Then, the client terminal stops the communication function when the current position reaches the offline predicted position. When the communication function is stopped, the power supply to the transceiver is stopped as shown in the figure.
  • beacons are intermittently received even when communication is not being performed.
  • the client terminal does not even perform intermittent reception when the communication function is stopped.
  • the client terminal compares the current position recognized by the position recognition means possessed by the client terminal with the notified online return predicted position. Then, when the current position reaches the online return predicted position, the client terminal returns the communication function.
  • the position recognition means possessed by the client terminal measures the current position information based on, for example, the GPS reception radio wave, the received radio wave intensity (RSSI) of the WiFi base station, the integration result of the acceleration information of the acceleration sensor, and the like.
  • RSSI received radio wave intensity
  • the moving state of the client terminal can be estimated based on acceleration information measured by the acceleration sensor, an image recognition result by the image recognition device, and the like.
  • the client terminal obtains detailed location information using the location recognition means, it becomes possible to control the communication function more accurately.
  • the offline predicted position is reached before the actual offline area, and the online return predicted position is reached before the actual online return position.
  • the server notifies the client terminal of the offline prediction time and the online return prediction time as communication prediction information.
  • the client terminal When the client terminal receives the communication prediction information, the client terminal compares the current time recognized by the time recognition means possessed by the client terminal with the notified offline prediction time. When the current time reaches the estimated offline time, the communication function is stopped. When the communication function is stopped, the power supply to the transceiver is stopped as shown in the figure. In this embodiment, since the client terminal does not even perform intermittent reception when the communication function is stopped, the effect of power saving is high even when compared with a power save mode during normal passive scan (same as above). .
  • the client terminal compares the current time recognized by the time recognition means possessed by itself with the predicted online return time. Then, when the current time reaches the online return prediction time, the client terminal returns the communication function.
  • the server does not notify the client terminal of the communication prediction information regarding the predicted position and the predicted time for reaching the offline area and returning to the online area.
  • the client terminal continues the intermittent beacon reception operation while stopping the transmission operation in the power save mode during the passive scan. That is, even when the offline area is reached, the power consumption of the client terminal is not significantly reduced.
  • whether to control the communication function using position information or time information differs for each system. For example, if position recognition is performed at regular time intervals, the predicted time may be reached first. If the client terminal does not include a position recognition unit, only the time recognition unit may be used to perform control as shown in FIG.
  • FIG. 8A and FIG. 8B show processing procedures executed by the server and the client terminal for realizing the operations shown in FIG. 5 and FIG. 6 in the form of flowcharts.
  • the client terminal basically determines its offline state / online state based on the communication prediction information received from the server.
  • the client terminal When the user logs in to the client terminal (step S11), the client terminal transmits sensor information used for position recognition extracted from the mounted sensor to the server (step S12). In this processing procedure, the client terminal transmits sensor information to the server at a relatively high frequency.
  • the server When the server receives the sensor information from the client terminal, the server specifies or estimates the current position of each client terminal based on the sensor information stored in the sensor information database (step S1).
  • the server analyzes the contents of the client terminal's private contents (text information such as schedules, emails, notepads, and captured image information) stored in the private contents database (described later). And the destination where the client terminal will move is predicted (step S2).
  • private contents text information such as schedules, emails, notepads, and captured image information
  • the server calculates the movement route of the client terminal from the current position specified or estimated from the sensor information to the predicted destination based on the movement prediction algorithm (step S3).
  • the server has a communication information database for storing communication information transmitted from a plurality of client terminals in the past, and communication states of a plurality of wireless systems with respect to time and place, that is, within the service area of each scattered access point. It knows the transfer rate, radio wave intensity, etc. (described above).
  • the server obtains the movement path of the client terminal in step S3, the server further predicts future communication information of the client terminal based on the communication prediction algorithm. That is, the server compares the predicted movement prediction information (destination, movement route) with communication information such as the received radio wave intensity of each access point to determine whether there is an offline area on the predicted movement route. Is determined (step S4).
  • the server calculates the offline predicted position or offline predicted time of the client terminal, and the online return predicted position or online return predicted time. (Step S5), the calculated information is transmitted to the client terminal as communication prediction information (Step S6).
  • the offline predicted position is calculated from the result of comparing the movement path of the client terminal predicted by the server with the position registration map of the base station or access point held by the server.
  • the offline prediction time is calculated from the distance calculated from the offline prediction position and the moving route from the current location, and the moving speed of the client terminal.
  • the client terminal transmits sensor information used for position recognition to the server at a relatively high frequency (described above), and communication prediction information is also transmitted from the server at a high frequency (step S6).
  • the client terminal can estimate that the current position has reached the offline predicted position when the communication predicted information is received from the server, or that the current time is the offline predicted time. Therefore, the client terminal stops the communication function in response to receiving the communication prediction information from the server (step S13). At this time, the server side may also stop the connection with the client terminal that is predicted to be offline.
  • the client terminal compares the current position by the position recognizing means held by itself or the current time by the time recognizing means with the predicted online return position or the predicted online return time notified from the server (step S14).
  • the offline state is maintained until the return predicted position or online return predicted time is reached, and the communication function is stopped.
  • step S14 the client terminal returns the communication function being stopped (step S16). At this time, if it is predicted that the client terminal returns to the online state, the server side resumes the connection with the client.
  • the online return predicted position is calculated from the result of comparing the movement path of the client terminal predicted by the server and the location registration map of the base station or access point held by the server.
  • the predicted online return time is calculated from the distance calculated from the predicted online return position, the travel route from the current location, and the moving speed of the client terminal.
  • step S14 even when the client terminal does not reach the online return predicted position or the online return predicted time, that is, the condition for returning the communication function is not satisfied (No in step S14), the client terminal satisfies the predetermined special condition. In the case (Yes in step S15), the communication function being stopped is restored (step S16).
  • the user may be included that the user has instructed to return to the online state by manual operation. Even if the client terminal is predicted to be in the offline area due to the cooperative action of the server and client terminal, the user may be able to detect that the current location is in the online area and respect the user's judgment. Because it should.
  • the client terminal controls the communication function only depending on the communication prediction information from the server, not its own sensor information, the notification of the sensor information from the client terminal and the notification of the communication prediction information from the server are relatively high. However, there is a concern that there is an error between the actual position or time and the communication prediction information. Therefore, it is considered preferable to have a mechanism capable of returning from the offline state to the online state on the client terminal side as in step S15.
  • the client terminal After returning the communication function (step S16), the client terminal checks whether it can return to the online state, that is, whether it can connect to the nearest base station or access point (step S17). .
  • a client terminal determines whether it is online based on communication prediction information from the server, not its own sensor information, it has not yet reached the offline area in reality, but is online You may not be able to return to. Therefore, when the online state cannot be restored yet (No in step S17), the client terminal temporarily stops the communication function (step S18) to avoid unnecessary power consumption. Note that, even on the server side, the connection with the client terminal predicted to be in the offline state may be stopped.
  • Step S17 when the client terminal can return to the online state (Yes in Step S17), it resumes the connection with the server (Step S19). Then, the client terminal connects to the server and performs processing such as information transfer and synchronization. On the server side, if it is predicted that the client terminal will return to the online state, the connection with the client is resumed.
  • the client terminal returns to step S12 and transmits sensor information to the server at a predetermined frequency.
  • FIGS. 5 and 6 show other examples of processing procedures executed by the server and the client terminal for realizing the operations shown in FIGS. 5 and 6, respectively, in the form of flowcharts.
  • the client terminal receives the communication prediction information from the server, but also has a communication information database, and accurately recognizes the position information of the offline area and the online area based on its own position recognition means. Shall be able to.
  • the client terminal acquires sensor information used for position recognition from the mounted sensor and transmits it to the server at a relatively low frequency (step S32).
  • the server When the server receives the sensor information from the client terminal, the server specifies or estimates the current position of each client terminal based on the sensor information stored in the sensor information database (step S21).
  • the server stores the contents of the client terminal's private contents stored in the private contents database (text information such as schedules, emails, notepads, and captured image information) based on the content analysis algorithm. Analysis is performed to predict the destination where the client terminal will move (step S22).
  • the server calculates the movement path of the client terminal from the current position specified or estimated from the sensor information to the predicted destination based on the movement prediction algorithm (step S23).
  • the server has a communication information database for storing communication information transmitted from a plurality of client terminals in the past, and communication states of a plurality of wireless systems with respect to time and place, that is, within the service area of each scattered access point. It knows the transfer rate, radio wave intensity, etc. (described above).
  • the server obtains the movement path of the client terminal in step S23, the server further predicts future communication information of the client terminal based on the communication prediction algorithm. That is, the server compares the predicted movement prediction information (destination, movement route) with communication information such as the received radio wave intensity of each access point to determine whether there is an offline area on the predicted movement route. Is determined (step S24).
  • the server calculates the offline predicted position or offline predicted time of the client terminal and the online return predicted position or online return predicted time. (Step S25), the calculated information is transmitted to the client terminal as communication prediction information (Step S26).
  • the client terminal transmits the sensor information used for position recognition to the server at a relatively low frequency (described above), and the communication prediction information is also transmitted from the server at a low frequency (step S26). ).
  • the client terminal When the client terminal receives the communication prediction information including the predicted position or the predicted time from the server, the client terminal recognizes the current position recognized by the position recognizing means such as GPS, WiFi, acceleration sensor or the like, or the time recognizing means. The recognized current time is compared with the offline predicted position or predicted time notified from the server. When the client terminal reaches the offline prediction area, the client terminal stops the communication function (step S33).
  • the position recognizing means such as GPS, WiFi, acceleration sensor or the like, or the time recognizing means.
  • the recognized current time is compared with the offline predicted position or predicted time notified from the server.
  • the client terminal stops the communication function (step S33).
  • the client terminal In the offline state, the client terminal refers to its own communication information database for the current position by the position recognition means held by itself (step S34), and checks whether or not it has approached the offline area (step S35). . If the client terminal approaches the offline area, the client terminal stops the communication function (step S36). At this time, the server side may also stop the connection with the client terminal that is predicted to be offline.
  • the client terminal In the offline state, the client terminal refers to its own communication information database for the current position by the position recognition means held by itself, and checks whether or not it has approached the online area (step S37). When the client terminal approaches the online area (Yes in step S37), the client terminal restores the communication function being stopped (step S38). At this time, if it is predicted that the client terminal returns to the online state, the server side resumes the connection with the client.
  • the client terminal can accurately recognize the position information of the offline area and the online area based on its own position recognition means (described above). Unlike the processing procedure shown in FIG. 8B, it is necessary to return the communication function by satisfying a special condition, or to recognize the offline state after returning the communication function and temporarily stop the communication function. Absent.
  • the client terminal When the client terminal returns to the communication function, it connects to the server and performs processing such as information transfer and synchronization. Thereafter, the client terminal returns to step S32 and transmits the sensor information to the server at a predetermined frequency.
  • FIG. 10 shows a configuration example of an information device such as a mobile phone that operates as a user client terminal.
  • the configuration of the power supply system in the device such as a battery is omitted, but the client terminal is assumed to be battery driven.
  • a CPU (Central Processing Unit) 1001 controls the operation of each unit according to a program stored in a ROM (Read Only Memory) 1002 or a program loaded from a storage unit 1004 to a RAM (Random Access Memory) 1003. Execute the process.
  • the RAM 1003 appropriately stores data necessary for the CPU 1001 to execute various processes.
  • the CPU 1001, the ROM 1002, and the RAM 1003 are connected to each other via a bus 1005.
  • the bus 1005 includes a storage unit 1004, a mobile phone transmission / reception unit 1006, a wireless LAN communication unit 1007, an operation unit 1008, an LED 1009, a vibrator 1010, a voice input / output control unit 1011, a microphone 1012, a voice input / output control unit 1013, and a display 1014.
  • the imaging unit 1015, the sensor group 1016, the internal clock unit 1017, and the non-contact IC module 1018 are connected. In the information device, a moving image or a still image can be taken using the imaging unit 1015.
  • the cellular phone transceiver 1006 can operate as a fully functioning cellular radio transceiver according to any known standard including standards such as W-CDMA and LTE.
  • the wireless LAN communication unit 1007 can operate according to a standard wireless LAN standard such as WiFi or WiMAX. In this embodiment, it is assumed that the wireless LAN communication unit 1007 can completely stop the communication function according to a command from the CPU 1001 in addition to performing an intermittent reception operation in the power save mode during passive scanning.
  • a standard wireless LAN standard such as WiFi or WiMAX.
  • the operation unit 1008 is configured with buttons, a jog dial, and the like, and accepts operations from the user. User operations include phone number input and various settings, as well as character input such as mail creation and schedule entry.
  • the LED 1009 emits light, for example, to direct the user's attention to the information device when presenting information to the user.
  • Vibrator 1010 applies vibration to the device main body to direct the user's attention at the time of incoming call, for example.
  • the microphone 1012 converts the user's voice into an electrical audio signal
  • the speaker 1013 converts the audio signal into an audible signal that can be heard by the user.
  • the voice input / output control unit 1011 supplies a basic analog output signal to the speaker 1013 and accepts an analog audio input from the microphone 1012.
  • Display 1014 allows the operator to view dialed digits and images, call status, menu options, and other service information when used as a normal mobile phone. Further, at the time of photographing by the imaging unit 1015, it can be used for display / reproduction output of a through image or a photographed image.
  • the imaging unit 1015 includes an optical system, an image sensor, and an image processor (all not shown).
  • the optical system includes a single lens or a plurality of lenses, and the image sensor captures an image formed by the optical system.
  • the image processor stores the compressed image data or RAW image data captured by the image sensor for storage in the storage unit 1004, output from the display 1014, or transmission by the mobile phone transmission / reception unit 1006 and the wireless LAN communication unit 1007. To process.
  • the image captured by the imaging unit 1015 is private content. Further, it can be sensor information for recognizing a captured image by the imaging unit 1015 and estimating a moving state of the client terminal.
  • the sensor group 1016 includes one or more sensors that can acquire sensor information that can be used for position recognition.
  • sensors that can acquire sensor information that can be used for position recognition. Examples of this type of sensor include a GPS module, an acceleration sensor module, and a geomagnetic sensor module.
  • the internal clock unit 1017 supplies time information such as the current time to the system. Based on the time information timed by the internal clock unit 1017, it is possible to estimate the arrival of the offline prediction time and the online return prediction time.
  • the non-contact IC module 1018 is a proximity IC module conforming to ISO / IEC14443 such as FeliCa (registered trademark), and can be used for authentication processing and billing processing. From the non-contact IC module 1018, traffic history and purchase history can be acquired.
  • FIG. 11 schematically shows a functional configuration for the client terminal to transmit private content and sensor information.
  • the private content is, for example, a mail history, a schedule history, a memo history, or the like processed through an application such as a mail software, a scheduler, or a notepad executed by the CPU 1001.
  • Action history such as billing information and operation history of various devices can be included in the private content.
  • Sensor information is sensor information measured by the sensor group 1016 and includes one or more pieces of information that can be used for position recognition. For example, position information acquired by the GPS module, acceleration information acquired by the acceleration sensor module, geomagnetic information acquired by the geomagnetic sensor module, and the like. Furthermore, operation history performed by the user on the operation unit 1008 and time information measured by the internal clock unit 1017 can be included in the sensor information. Alternatively, sensor information for estimating the moving state of the client terminal, such as an acceleration sensor or an image recognition result of a captured image by the imaging unit 1015, can be included.
  • the transfer rate acquired by the antenna module including the mobile phone transmission / reception unit 1006 and the wireless LAN communication unit 1007 and the received radio wave intensity of the base station or access point may be included in the sensor information.
  • These sensor information is stored in the storage unit 1004 and transferred to the server at a predetermined frequency in an online state after the user logs in to the client terminal.
  • FIG. 12 shows a configuration example of an information device that operates as a server.
  • the server can be constructed in the form of starting a predetermined server application on a general computer system such as a personal computer.
  • the CPU 1201 executes various application programs under an execution environment provided by the operating system.
  • the operating system (OS: Operating System) controls the basic operation of a computer represented by, for example, the so-called Windows XP (registered trademark) of Microsoft Corporation or the so-called Mac OS (registered trademark) of Apple Computer Corporation. It is a program to do.
  • the CPU 1201 is connected to a front side bus (FSB) 1202, and the FSB 1202 is further connected to a north bridge 1203.
  • the north bridge 1203 includes an AGP (Accelerated Graphics Port) 1204 and a hub interface 1210.
  • the north bridge 1203 is connected to the cache memory 1208 and the RAM 1209 which is the main memory, and controls access operations to these memory devices.
  • the RAM 1209 is configured by, for example, a DRAM (Dynamic RAM), and stores a program executed by the CPU 1201 or work data necessary for the operation of the CPU 1201.
  • the cache memory 1208 is configured by a memory device such as SRAM (Static RAM) that can execute a higher-speed write or read operation, and caches, that is, temporarily stores a program or data used by the CPU 1201.
  • the north bridge 1203 is connected to the video controller 205 via the AGP 1204.
  • the video controller 1205 generates image data corresponding to the data received from the CPU 1201 or stores the image data received from the CPU 1201 as it is in a built-in video memory (not shown) and also stores the image data in the video memory.
  • An image corresponding to the data is displayed on the LCD 1206 or the VGA 1207.
  • the VGA 1207 is a VGA (Video Graphics Array) type display.
  • the LCD 1206 or the VGA 1207 displays an image or text based on data supplied from the video controller 1205.
  • the north bridge 1203 is interconnected with the south bridge 1211 via the hub interface 210.
  • the south bridge 1211 includes an AC link interface 1211A, a USB (Universal Serial Bus) interface 1211B, an IDE (Integrated Drive Electronics) interface 1211C, a PCI (Peripheral Component Interconnect) interface 1111D, an LPC12L A LAN interface 1211F and the like are incorporated, and input / output operations of various devices connected via devices connected to the AC link bus 1212, the USB bus 1217, and the IDE bus 1222 are controlled.
  • USB Universal Serial Bus
  • IDE Integrated Drive Electronics
  • PCI Peripheral Component Interconnect
  • a modem 1213, a sound controller 1214, and the like are connected to the AC link bus 1212.
  • the sound controller 1214 takes in sound from the microphone 1215, generates data corresponding to the sound, and outputs the data to the RAM 1209.
  • the sound controller 1214 drives the speaker 1216 and causes the speaker 1216 to output sound.
  • USB interface 1211B transmits data to a USB device (not shown) connected via the USB bus 1217 and receives data from the device.
  • the IDE interface 1211C is composed of two IDE controllers, a primary IDE controller and a secondary IDE controller, a configuration register, and the like (both not shown).
  • An HDD (Hard Disk Drive) 1223 is connected to the primary IDE controller via an IDE bus 1222.
  • an IDE device such as a CD-ROM drive 1224 or an HDD (not shown) is attached to the secondary IDE controller.
  • Various application programs executed by the CPU 1201 are installed in the HDD 1223.
  • Various data and contents can be stored in the HDD 1223.
  • a communication information database, a sensor information database, and a private content database are constructed using the HDD 1223.
  • the wireless LAN communication unit 1225 is connected to the network by wireless LAN communication such as IEEE802.11a / b.
  • the LAN interface 211F transmits data to a network connected to the wireless LAN communication unit 1225 and receives data.
  • the computer system operating as a server may perform processing such as information transfer and synchronization with a client terminal via a wireless LAN.
  • a ROM 1252, an I / O (Input / Output) interface 1253, and a controller 1256 are connected to the LPC bus 1251.
  • a ROM (Read Only Memory) 1252 stores BIOS (Basic Input Output System) and the like.
  • BIOS Basic Input Output System
  • the BIOS is composed of a group of basic input / output commands, and controls data input / output between the OS or application program and peripheral devices.
  • a serial terminal 1254 and a parallel terminal 1255 are connected to the I / O interface 1253, and serial input / output and parallel input / output of data with devices connected to the respective terminals is performed.
  • User input devices such as a keyboard 1258 and a mouse 1257 can be connected to the controller 1256.
  • the PCI bus 1226 is connected to a card interface 1229, an IEEE 1394 interface 1227, and other PCI devices (not shown).
  • the card interface 1229 supplies data supplied from an expansion card connected to a card slot (not shown) to the CPU 1201 or the RAM 1209, and also supplies data supplied from the CPU 1201 to the expansion card connected to the slot. Output.
  • An example of the expansion card is a wired LAN card 1230.
  • the IEEE 1394 interface 1227 transmits / receives data (data stored in a packet) conforming to the IEEE 1394 standard via the IEEE 1394 port 1228.
  • an information device when an information device (see FIG. 12) operates as a server, it receives communication information, private content, and sensor information from a client terminal, and predicts communication with the moving client terminal. Send information.
  • FIG. 13 schematically shows a functional configuration for the server to provide the communication prediction information through a cooperative operation with the client terminal.
  • the server includes a communication information database 1301, a sensor information database 1302, and a private content database 1303. These databases are constructed using the HDD 1223.
  • the communication information database 1301 stores communication information such as transfer rate and received radio wave intensity transmitted from a plurality of client terminals in the past.
  • the gist of the present invention is not limited to the method of constructing the communication information database based on the communication information collected from a plurality of client terminals, and the communication information database may be constructed by other methods.
  • the server can grasp the communication state of a plurality of wireless systems with respect to time and place, that is, the transfer rate and radio wave intensity in the service area of each scattered access point.
  • the sensor information database 1302 stores sensor information transmitted from a plurality of client terminals in the past.
  • the sensor information mentioned here includes position information measured based on GPS) received radio waves mounted on the client terminal, received signal strength information (RSSI) of the WiFi base station, acceleration information measured by an acceleration sensor, and the like. Sensor information that can be used for recognition is included.
  • the server can specify or estimate the current position of each client terminal based on the sensor information stored in the sensor information database 1302.
  • the private content database 1303 stores private content (text information such as schedules, emails, notepads, captured image information, purchase history, traffic history, etc.) sent from multiple client terminals in the past. is doing.
  • the server can analyze the contents of the private content stored in the database and predict the destination of the moving client terminal, for example.
  • the use of the private content database is not limited to the destination prediction.
  • the upload controller 1310 is a functional module realized by the CPU 1001 executing a predetermined application program, for example.
  • the upload controller 1310 uploads communication information such as received radio wave intensity and transfer rate to the communication information database 1301 on the server side, and sensor information such as position information, acceleration information, geomagnetic information, purchase history / traffic history, etc. as sensor information.
  • Upload to the database 1302 and upload private contents such as mail history, schedule history, memo history, purchase history / traffic history to the private content database 1303.
  • the server also includes a content analysis algorithm calculation unit 1304, a movement prediction algorithm calculation unit 1305, and a communication prediction algorithm calculation unit 1306 in order to provide a communication prediction service to each client terminal.
  • the content analysis algorithm computing unit 1304 analyzes the content written in the private content of the client terminal stored in the private content database 1303, and determines the destination to which the client terminal will move from the content analysis algorithm.
  • the destination prediction information is supplied to the movement prediction algorithm calculation unit 1305.
  • the movement prediction algorithm calculation unit 1305 predicts the movement route to the destination predicted by the content analysis algorithm calculation unit 1304 from the current position of the client terminal specified or estimated based on the sensor information using the movement prediction algorithm. Then, this movement prediction information is supplied to the communication prediction algorithm calculation unit 1306.
  • the movement prediction algorithm calculation unit 1305 uses the movement history of the user who uses the client terminal so far, or the movement history of not only the corresponding user but also other users, Predict how it will move.
  • the travel history is used to determine the probability of the travel route for this time and this day of the week, and the highest travel route is selected.
  • a learning algorithm using a Hidden Markov Model HMM
  • a travel route is predicted from travel route candidates obtained from the travel history.
  • the movement path that is, the connection between points is expressed by a standard stochastic state transition machine.
  • the probabilistic state transition machine is pre-learned, and when performing the communication prediction service, the current position information of the user is input to the probability state transition machine.
  • the travel route prediction can be obtained.
  • the movement prediction algorithm calculation unit 1305 analyzes private contents such as a schedule table, an e-mail, and a memo pad so that a future schedule can be obtained. A method is also used for predicting the destination. As a result, it is possible to predict how to move in the future with respect to the current position and the current time.
  • the communication prediction algorithm calculation unit 1306 compares the movement prediction information (destination, movement route) predicted by the movement prediction algorithm calculation unit 1305 with the communication information stored in the communication information database 1301, thereby Predict future communication information.
  • the communication prediction algorithm calculation unit 1306 uses an offline prediction position or an offline prediction time at which the client terminal goes offline and an online return prediction position at which the client terminal returns to the online state or The predicted online recovery time is predicted, and this communication prediction information is notified to the client terminal.
  • the communication information stored in the communication information database 1301 includes communication history and radio wave intensity measurement history of each user, communication history and radio wave intensity history collected from a plurality of users, mobile phone carrier companies and WiFi.
  • the communication prediction algorithm calculation unit 1306 can know the radio wave environment information such as the communication area of WiFi, the mobile phone, and the communication speed. Then, the communication prediction algorithm calculation unit 1306 compares the radio wave environment information with the prediction of the movement route, so that what communication carrier goes offline when and at which position on the predicted movement route of the client terminal. That is, the offline area for each communication carrier is determined.
  • the client terminal controls its own communication function based on the communication prediction information from the communication prediction algorithm calculation unit 1306 of the server. That is, when the client terminal reaches the offline prediction position or the offline prediction time notified as the communication prediction information, the client terminal stops the communication function such as the mobile phone transmission / reception unit 1006 or the wireless LAN communication unit 1007. In addition, the client terminal when offline is online based on time determined using position recognition using GPS, WiFi, an acceleration sensor, or time recognition means such as an internal clock unit 1017 possessed by the client terminal. When it is determined that the predicted return position or time has been reached, the communication function is returned.
  • the client terminal can reduce power consumption associated with operating a communication function for searching for a base station and an access point when offline. Also.
  • the client terminal has a plurality of wireless communication functions such as the mobile phone transmission / reception unit 1006 and the wireless LAN communication unit 1007, it is possible to reduce power consumption by stopping only the wireless communication function that has been offline for a long time. is there.
  • the communication information database is centrally managed on the server side.
  • the client terminal basically determines its own offline state / online state based on the communication prediction information received from the server. Therefore, the communication prediction service of the client terminal can be realized according to the processing procedure shown in FIG.
  • the client terminal side may also hold the base station and access point map data (or communication information such as the received radio wave intensity of each access point) by itself.
  • the client terminal can accurately determine whether the current position is online or offline by combining with the position information acquired by the position recognition means.
  • the client terminal can control ON / OFF of the communication function without notification of communication prediction information from the server according to the processing procedure shown in the flowchart format in FIGS. 9A and 9B.
  • FIG. 14 shows an example of the prediction result of the movement path of the client terminal by the movement prediction algorithm calculation unit 1305.
  • the movement prediction algorithm calculation unit 1305 in the server first grasps the current location and current time of the client terminal. Then, the movement prediction algorithm calculation unit 1305 determines the future from the current position and the current time based on the movement history of the user using this client terminal so far, or the movement history of not only the user but also other users. Predict how it will move.
  • the movement prediction algorithm calculation unit 1305 uses the movement history as a movement prediction algorithm, obtains the probability of the movement route at this time and this day of the week, and selects the highest movement route. Alternatively, the movement prediction algorithm calculation unit 1305 uses a learning algorithm to which a hidden Markov model is applied as the movement prediction algorithm, and predicts a movement path from one or more movement path candidates calculated from the movement history.
  • the movement prediction algorithm calculation unit 1305 predicts the destination of the client terminal and the movement route to the destination using only the movement history.
  • the movement prediction algorithm calculation unit 1305 analyzes the user's private content stored in the private content database 1303 such as a schedule, mail, and memo pad, thereby determining the corresponding user's schedule, The ground may be predicted.
  • the communication prediction algorithm calculation unit 1306 obtains the communication prediction information including the offline prediction position or offline prediction time and the online return prediction position or time for each offline area, for example, when the client terminal approaches the offline area. Notice.
  • the server predicts the movement path of the client terminal, further predicts an offline area (for each communication carrier) on the predicted movement path, and predicts communication with the client terminal. Information can be notified. On the other hand, based on the notified communication prediction information, the client terminal should return the existence of an offline area on its own movement path, that is, the position or time at which the communication function can be stopped, and the communication function. You can clear the location or time. Since the client terminal does not even perform intermittent reception when the communication function is stopped, a high power saving effect can be realized as compared with a power save mode at the time of normal passive scan.
  • the embodiments relating to a communication system having WiFi, W-CDMA, LTE, and WiMAX as wireless communication units have been mainly described.
  • the gist of the present invention is not limited to this.
  • the present invention can be similarly applied even when wireless communication services provided by various communication carriers are included in the wireless communication unit.
  • the content analysis algorithm, the movement prediction algorithm, the communication prediction algorithm, the private content database, the sensor information database, and the communication information database are all described mainly on the server side. Even if at least a part of the algorithm and database is provided on the client side, the present invention can be realized in the same manner.
  • ROM 1253 ... I / O interface 1254 ... Controller 1260 ... Battery 1301 ... Communication information database 1302 ... Sensor information database 1303 ... Private content database 1304 ... Content analysis algorithm computing unit 1305 ... Movement prediction algorithm computing unit 1306 ... Communication prediction algorithm computing unit 1310: Upload controller

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PCT/JP2010/063165 2009-09-14 2010-08-04 情報提供装置及び情報提供方法、無線通信装置及び無線通信方法、コンピューター・プログラム、並びに無線通信システム Ceased WO2011030636A1 (ja)

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EP10815233.1A EP2477419B1 (en) 2009-09-14 2010-08-04 Wireless communication device, wireless communication method and computer program
RU2012108639/08A RU2012108639A (ru) 2009-09-14 2010-08-04 Устройство предоставления информации и способ предоставления информации, устройство беспроводной связи и способ беспроводной связи, компьютерная программа и система беспроводной связи
CN201080039913.4A CN102484771B (zh) 2009-09-14 2010-08-04 信息提供装置和信息提供方法、无线通信装置和无线通信方法、及无线通信系统
BR112012005151A BR112012005151A2 (pt) 2009-09-14 2010-08-04 aparelho de fornecimento de informação, método de fornecimento de informação, programa de computador, aparelho de comunicação sem fio, método de comunicação sem fio, e, sistema de comunicação sem fio
US13/394,404 US9313721B2 (en) 2009-09-14 2010-08-04 Information providing apparatus and information providing method, wireless communication apparatus and wireless communication method, computer program, and wireless communication system

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