JP4534495B2 - Distributed processing system and method, data processing device, terminal device - Google Patents

Description

  The present invention relates to a distributed processing system and method for performing data processing using a plurality of processors, and a data processing device and a terminal device used in such a distributed processing system, and more specifically, pre-processing data and processed data by wireless communication The present invention relates to a distributed processing system and method for transmitting and receiving data, and a data processing apparatus and a terminal device used in the distributed processing system.

  In recent years, with the increasing complexity and sophistication of software, the amount of data processed by one processor is increasing. When the amount of data to be processed increases, a burden is imposed on the processor, and there is a problem that it takes time to complete the processing. In order to improve such a problem, a distributed processing system has been developed in which data processing is performed using a plurality of processors connected to each other without performing all processing by only one processor.

  As a distributed processing system, for example, a plurality of terminal devices are provided. When a new task execution is requested, the execution task processing speed of each processor is determined from the maximum execution speed of the task and the number of currently executed tasks. Then, the task movement time is obtained from the communication speed and the amount of communication associated with the movement of the task processing, and the processing is completed most quickly when the new task is executed on which processor from the execution task processing speed and the task movement time of each processor. There has been proposed a distributed processing system for determining whether or not (for example, Patent Document 1).

  By the way, in a distributed processing system, when a processor for processing data is installed in a plurality of electronic devices, each electronic device is connected by a wired line such as Ethernet (registered trademark), but each electronic device is connected by a wired line. As a result, the arrangement of the electronic device is restricted, and the inconvenience occurs such that the cord used for connection becomes an obstacle. Therefore, a distributed processing system in which each electronic device is connected by wire becomes inconvenient when used at home, for example.

  In order to avoid the inconveniences described above, a distributed processing system in which electronic devices are connected by a wireless communication network has been proposed.

  By connecting each electronic device via a wireless communication network, the distributed processing system can freely move the electronic device and execute distributed processing without being aware of the presence of the electronic device involved in the distributed processing. It becomes possible.

  However, when an electronic device is connected by a wireless communication network, it is necessary to perform authentication or the like in order to guarantee the security of data to be transmitted and received. In addition, since an electronic device connected by a wireless communication network can move out of a range where wireless communication with another electronic device is possible, each time an electronic device is requested to perform distributed processing. In addition, it is necessary to confirm that other electronic devices exist within a range where wireless communication is possible.

  In such a case, the electronic device authenticates another electronic device or confirms that the other electronic device exists within a wireless communication range before performing the distributed processing requested by the user. It is necessary to do. The electronic device needs to perform a predetermined process in order to authenticate another electronic device and to confirm that the other electronic device exists within a range where wireless communication is possible. Therefore, inconveniences such as time required for starting the distributed processing and complicated operations are required.

Japanese Patent Laid-Open No. 9-288648

  The present invention has been proposed in view of the conventional situation described above, and includes a data processing device and a terminal device connected by a wireless communication network. When a user requests distributed processing, the present invention An object of the present invention is to provide a distributed processing system and method in which a terminal device can request a distributed processing from a data processing device without confirming that the electronic device is within a wireless communicable range. To do. It is another object of the present invention to provide a data processing device and a terminal device used in such a distributed processing system and method.

The present invention includes a data processing device connectable via a wireless communication network and a portable terminal device, and the data processing device and the portable terminal device perform a series of data processing by distributing a load. A distributed processing system to be executed, wherein the data processing device includes data processing means for processing data transmitted from the portable terminal device, and the portable terminal transmitted from the portable terminal device. Based on the distributed processing request indicating the content of the distributed processing requested by the device to the data processing device, a determination result indicating whether or not the distributed processing requested by the distributed processing request is executable is created. detecting the determination result creating means, a presence notification packet creation unit configured to create the presence notification packet indicating the presence of the data processing apparatus, the data processing apparatus from the portable terminal device And transmission means for transmitting continuously the existence notification packet to the mobile terminal device without receiving the order of the signal, the portable terminal device is transmitted is created constantly by said data processing apparatus When the presence notification packet indicating the presence of the data processing device is moved to a range where wireless communication with the data processing device is possible, the data is transmitted without transmitting a signal for detecting the data processing device. By receiving from the processing device, confirmation means for confirming that the data processing device is within a wireless communication range and confirmation by the confirmation device that the data processing device is within a wireless communication range After that, a distributed processing request indicating the content of the distributed processing requested to the data processing device is created and transmitted to the data processing device. Creating means; judgment result confirmation means for confirming the content of the judgment result transmitted from the data processing device and indicating whether or not the distributed processing requested by the distributed processing request is executable; and the judgment result When it is confirmed by the confirmation means that the distributed processing requested by the distributed processing request is executable, pre-processing data that is data before the distributed processing is performed on the data processing device Transmission means for transmitting.

Further, the present invention is a data processing device that can be connected to a portable terminal device via a wireless communication network, and executes a series of data processing by distributing a load between the portable terminal device and the portable terminal device. The data processing means for processing data transmitted from the portable terminal device and the portable terminal device transmitted from the portable terminal device request the data processing device. A determination result creating means for creating a determination result indicating whether or not the distributed processing requested by the distributed processing request is executable based on the distributed processing request indicating the content of the distributed processing; a presence notification packet creation unit configured to create the presence notification packet indicating the presence, the portable terminal device without receiving a signal for detecting the data processing apparatus from the portable terminal device And a sending means for sending continuously the existence notification packet for.

Further, the present invention is a portable terminal device that is connectable to a data processing device via a wireless communication network, and performs a series of data processing by distributing a load with the data processing device. When the presence notification packet indicating the presence of the data processing device created by the data processing device and constantly transmitted is moved to a range where wireless communication with the data processing device is possible, the data processing device is Receiving from the data processing device without transmitting a signal for detection, confirmation means for confirming that the data processing device exists in a wireless communicable range; and the data processing by the confirmation means After confirming that the device is within the wireless communication range, create a distributed processing request indicating the content of the distributed processing requested to the data processing device, and A distributed processing request creating means for transmitting to the physical device, and a determination for confirming the content of the determination result transmitted from the data processing device and indicating whether or not the distributed processing requested by the distributed processing request is executable When the result confirming unit and the determination result confirming unit confirm that the distributed processing requested by the distributed processing request can be executed, before the distributed processing is performed on the data processing device. Transmission means for transmitting the pre-processing data which is the data of the above.

Furthermore, the present invention includes a data processing device connectable via a wireless communication network and a portable terminal device, and the data processing device and the portable terminal device distribute a load to distribute a series of data. A distributed processing method of a distributed processing system for executing processing, wherein the terminal device receives a presence notification packet indicating the presence of the data processing device that is created by the data processing device and is constantly transmitted from the data processing device. When the wireless communication device moves to a range where wireless communication with the data processing device is possible, the data processing device receives the signal for detecting the data processing device without transmitting it. A position confirmation step for confirming that the communication terminal is within a communicable range; and the portable terminal device is wirelessly connected to the data processing device in the position confirmation step. Create a distributed processing request that indicates the content of the distributed processing requested to the data processing device and sends it to the data processing device when it is confirmed that it exists within a reliable range A judgment result creation step for creating a judgment result by judging whether or not the data processing apparatus can execute the distributed processing indicated by the distributed processing request created in the distributed processing request creation step. A determination result confirmation step in which the portable terminal device confirms the content of the determination result created in the determination result creation step; and the portable terminal device performs the distributed processing in the determination result confirmation step. When it is confirmed that the distributed processing requested by the request is executable, the data before the distributed processing is performed on the data processing device Characterized in that it comprises a transmission step of transmitting the that pre-processing data.

  According to the present invention, the terminal device can request distributed processing from the data processing device in a state where the terminal device is not connected to the distributed processing device by wire. Therefore, the terminal device can be freely moved regardless of the installation location of the data processing device.

According to the present invention, when one of the terminal device and the data processing device moves to a range where the terminal device can wirelessly communicate with the data processing device, regardless of the intention of the user of the terminal device, the terminal device By receiving from the data processing device the presence notification packet indicating the presence of the data processing device that is created and constantly transmitted by the data processing device without sending a signal for detecting the data processing device. Then, it is confirmed that the data processing device exists in a range where wireless communication is possible. That is, when the terminal device moves to a range where wireless communication with the data processing device is possible, the terminal device ends the existence confirmation of the data processing device before the user requests the terminal device to execute the distributed processing. Is possible.

Therefore, according to the present invention, it is possible to reduce the time required from the time when the user requests the terminal device to execute the distributed processing until the distributed processing ends. Even if the user does not operate the terminal device, when one of the terminal device and the data processing device moves to a range where the terminal device can wirelessly communicate with the data processing device , the terminal device Confirm existence.

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

  As shown in FIG. 1, a distributed processing system 1 to which the present invention is applied includes a terminal device 3 and a data processing device 4 connected via a wireless communication network 2. There may be a plurality of terminal devices 3 connected to the data processing device 4 via the wireless communication network 2.

  The distributed processing system 1 according to the present embodiment is used in a public place or the like, and the data processing device 4 is installed in, for example, a station, a library, a restaurant, an office building, or the like. The terminal device 3 is an electronic device such as a PDA (Personal Digital Assistants) normally carried by the user. In the distributed processing system 1 to which the present invention is applied, the data processing device 4 performs data processing requested from the terminal device 3. In the present embodiment, the terminal device 3 also performs data processing at the same time.

  In the present embodiment, the terminal device 3 and the data processing device 4 communicate based on the IEEE 802.11 specification. That is, when transmitting desired data, as shown in FIG. 2, first, the data transmission side transmits RTS (Request To Send) to the data reception side. When receiving the RTS, the data receiving side transmits a CTS (Clear To Send) to the surroundings to notify the surrounding terminal devices of the start of packet exchange. Then, the data transmission side transmits desired data to the data reception side. The data receiving side receives desired data. When the desired data is correctly received, the data receiving side transmits an ACK (Acknowledgement) to the data transmitting side.

  The terminal device 3 performs distributed processing on the data processing device 4 when a user requests data processing that requires high processing capability such as execution of a plurality of applications and display of images with high resolution. Request. When the terminal device 3 requests the data processing device 4 to perform distributed processing, data processing is performed at a high speed, or a large amount of data that cannot be processed by the processor 12 is processed.

  The terminal device 3 includes a wireless communication unit 11 and a processor 12. The wireless communication unit 11 and the processor 12 are connected to each other, for example, via a bus (not shown).

  The wireless communication unit 11 transmits data to the data processing device 4 by wireless communication, receives data transmitted from the data processing device 4 by wireless communication, and the like.

  The processor 12 performs data processing and confirmation of the content of data transmitted from the data processing device 4. Further, the processor 12 creates data such as an authentication request to be transmitted to the data processing device 4 and a distributed processing entry request. Specifically, when requesting distributed processing to the data processing device 4, the distributed processing request packet 20 shown in FIG. 3 is created.

  The distributed processing request packet 20 is configured such that a MAC (Media Access Control) Header 22 and an FCS (Frame Check Sequence) 23 are added to the Frame Body 21.

  The MAC header 22 includes the type of packet to be transmitted, a destination, a destination address, and the like. The FCS 23 is error detection data such as CRC (Cyclic Redudancy Check Code). The frame body 21 includes a unit ID 24 indicating identification data as the terminal device 3, a task type 25 indicating the type of the task scheduled to be requested, a task rate 26 indicating the requested TAT (Turn Around Time), and a task indicating the scheduled execution time of the task scheduled to be requested. Period 27 is provided.

  The TAT transmits data before the terminal device 3 performs data processing (hereinafter referred to as pre-processing data) for one processing unit to the data processing device 4, and then the data processing device 4 performs data processing. This is the time until data after data processing (hereinafter referred to as processed data) is returned to the terminal device 3.

  Returning to FIG. 1, the data processing device 4 performs data processing in response to a request from the terminal device 3.

  The data processing device 4 includes a wireless communication unit 31, a CPU 32, a task memory 33, and a processor 34. The wireless communication unit 31, the CPU 32, the task memory 33, and the processor 34 are connected to each other via a bus (not shown), for example.

  The wireless communication unit 31 transmits data to the terminal device 3 through wireless communication and receives data transmitted from the terminal device 3 through wireless communication.

  The CPU 32 confirms the contents of the received data and creates data to be transmitted to the terminal device 3. Further, the CPU 32 creates a presence notification packet 40 as shown in FIG. 4 and transmits it constantly via the wireless communication unit 31.

  The presence notification packet 40 is configured such that the MAC Body 22 and the FCS 23 are added to the Frame Body 41.

  The frame body 41 is a unit ID 42 that identifies the data processing device 4, a processor type 43 that indicates the type of the processor 34, a processor version 44 that indicates the version of the processor 34 or the operating system, and the data processing device 4 is in operation or is stopped. A processor status 45 indicating the state of the data processing device 4 is provided.

  By receiving the presence notification packet 40, the terminal device 3 can detect that the data processing device 4 exists within a wireless communication range. That is, when the data processing device 4 constantly transmits the presence notification packet 40, the terminal device 3 detects the presence of the data processing device 4 within the wireless communication range, for example, the presence of the data processing device 4. Thus, it is possible to easily detect the signal while avoiding the power consumption caused by transmitting the signal.

  Note that the distributed processing request packet 20 and the presence notification packet 40 are meaningless data packets for terminal devices unrelated to the distributed processing system 1.

  Also, in the distributed processing system 1, by determining the format of the frame bodies 21, 41, the distributed processing request packet 20 and the presence notification packet 40 having the same format are transmitted regardless of the wireless communication method used.

  Returning to FIG. 1, the task memory 33 stores tasks executed by the data processing device 4. In the present embodiment, all tasks stored in the storage unit (not shown) of the terminal device 3 are stored in the task memory 33. Since all the tasks stored in the storage unit of the terminal device 3 are stored in the task memory 33, the terminal device 3 assigns a task to be used when the data processing device 4 requests distributed processing to the data processing device. 4 need not be transmitted. Therefore, the distributed processing system 1 can shorten the time taken to start data processing.

  The processor 34 executes the task and performs data processing requested from the terminal device 3. In the present embodiment, the processor 34 executes a task stored in the task memory 33 to perform data processing. The processor 34 may be configured to execute a task that is not stored in the task memory 33, such as a task transmitted from the terminal device 3 by wireless communication.

  Next, in the distributed processing system 1, a method in which the terminal device 3 requests the data processing device 4 for distributed processing and the data processing device 4 executes a task to process data will be described in detail with reference to FIG. Explained.

  The data processing device 4 transmits the presence notification packet 40 except when it is stopped or malfunctioning. When the terminal device 3 moves to a position where it can receive the presence notification packet 40 transmitted from the data processing device 4, the terminal device 3 receives the presence notification packet 40 in step S1. Moreover, the terminal device 3 receives the beacon transmitted from the data processing device 4 in step S2.

  Upon receiving the presence notification packet 40, the terminal device 3 creates an authentication request indicating that the data processing device 4 requires authentication in step S3, transmits the authentication request to the data processing device 4, and starts the authentication process. .

  Through the authentication process, the reliability of communication performed between the terminal device 3 and the data processing device 4 is confirmed. When the reliability of the communication performed between the terminal device 3 and the data processing device 4 is confirmed, the data processing device 4 authenticates the terminal device 3 and transmits data indicating that the authentication has been performed in step S4. By receiving data indicating that the terminal device 3 has been authenticated, the authentication process ends.

  When the authentication process ends, the terminal device 3 creates an association request indicating that the data processing device 4 requests an association in step S5, transmits the association request to the data processing device 4, and starts the association process.

  In the association process, additional functions defined between the terminal apparatus 3 and the data processing apparatus 4 among the additional functions defined in the distributed processing system 1 are confirmed. The transmission band required for the communication between the two is confirmed. When the operation performed in the association process is completed, the data processing device 4 creates an association process termination indicating that the association process is terminated, and transmits it to the terminal device 3 in step S6. When the terminal device 3 receives the end of the association process, the association process ends.

  By the association process, the terminal device 3 can determine whether or not the data processing device 4 can perform desired data processing before creating the distributed processing entry request.

  When the data processing is requested by the user of the terminal processing 3, the terminal device 3 creates a distributed processing entry request and transmits it to the data processing device 4 in step S7. When the data processing device 4 receives the distributed processing entry request, the distributed processing entry process starts.

  When receiving the distributed processing entry request, the data processing device 4 transmits task data indicating a task registered in the task memory 33 to the terminal device 3 in step S8.

  When the terminal device 3 receives the task data, the terminal device 3 selects a task that requests the data processing device 4 to execute. Further, the terminal device 3 generates the distributed processing request packet 20 with the selected task as Task Type 25, and transmits it to the data processing device 4 in step S9. By transmitting the distributed processing request packet 20, the terminal device 3 notifies the data processing device 4 of the requested distributed processing content such as a scheduled task and a request TAT.

  The data processing device 4 receives the distributed processing request packet 20 and determines whether or not the distributed processing requested by the terminal device 3 can be executed, for example, based on whether or not the request TAT can be realized. decide.

  In the present embodiment, whether or not the requested TAT can be realized depends on, for example, an expected TAT (hereinafter, predicted TAT) based on an evaluation result of an empty channel and an evaluation result of a wireless PHY (Physical Layer) mode. It is determined whether or not the calculated expected TAT satisfies the requested TAT.

  First, the evaluation of an empty channel is performed by measuring the number of times T1 at which the carrier sense is performed with respect to the number of measurements T0 after measuring a predetermined number of times (Tmax) at predetermined time intervals to determine whether a desired channel is at the carrier sense. Is calculated by calculating the channel usage rate α and determining that the measured channel is an empty channel when the channel usage rate α is less than a predetermined value. .

  Specifically, first, as shown in FIG. 6, T0 and T1 are reset in step S21.

  Next, in step S22, it is measured whether or not the desired channel is set to carrier sense. If it is set to carrier sense, the process proceeds to step S23, T1 is increased by 1, and then the process proceeds to step S24. If the carrier sense is not set, the process proceeds to step S24 as it is.

  Next, after increasing T0 by 1 in step S24, the process proceeds to step S25. In step S25, it is determined whether or not T0 is less than Tmax. When T0 is less than Tmax, the process returns to step S22, and when T0 is Tmax, the process proceeds to step S26.

  In step S26, α is calculated by dividing T1 by T0.

  The evaluation of the wireless PHY mode is performed by using the wireless PHY mode that can be used by the data processing device 4 for communication with the terminal device 3 and sending predetermined data (hereinafter referred to as evaluation data) to the terminal device 3. And the wireless PHY mode having a high transmission rate is determined. In the present embodiment, evaluation is performed in the wireless PHY mode by sequentially transmitting evaluation data from a mode with a low transmission rate and confirming whether the evaluation data can be transmitted.

  In the present embodiment, the names 0, 1, 2,... M (where M is a natural number) are assigned to the wireless PHY modes that can be used with the terminal device 3, and the numerical values are large. Indeed, it is a mode with a high transmission rate. Further, the smaller the numerical value, the slower the transmission rate, but the longer the transmission distance.

  The wireless PHY mode evaluation method will be specifically described. First, as shown in FIG. 7, in step S31, the data processing device 4 uses the wireless PHY used when performing wireless communication with the terminal device 3. Set mode mode to 0.

  Next, in step S <b> 32, the data processing device 4 transmits evaluation data to the terminal device 3 in the set wireless PHY mode.

  Next, in step S <b> 33, the data processing device 4 determines whether or not an ACK is returned from the terminal device 3. When ACK is returned, the process proceeds to step S34, and when ACK is not returned, the evaluation of the wireless PHY mode is terminated.

  Next, in step S34, the data processing device 4 sets Sel to a numerical value set as the wireless PHY mode, and proceeds to step S35.

  Next, in step S35, the wireless PHY mode is set to Sel + 1, and the process proceeds to step S36.

  In step S36, it is determined whether or not the numerical value set as the wireless PHY mode in step S35 is larger than M. If the numerical value is larger than M, the evaluation of the wireless PHY mode is finished, and is set to M or less. Then, the process returns to step S32. The data processing device 4 determines a wireless PHY mode that can be used for communication with the terminal device 3 based on the wireless PHY mode set at the end of the evaluation of the wireless PHY mode. By determining the wireless PHY mode, the fastest transmission rate Rmax when performing communication with the terminal device 3 is determined.

  The expected TAT is obtained using the channel usage rate α and the fastest transmission rate Rmax determined by the method described above. Specifically, when the wireless communication overhead to be used is β (where 0 ≦ β ≦ 1), the amount of data transmitted to and received from the terminal device 3 is D, the calculation processing time is Tcalc, and the communication time is Tcom. , Determined by Equation 1 described below.

Expected TAT = Tcalc + Tcomm
= Tcalc + D / {Rmax × (1-α) × (1-β)} Equation 1

  The data processing device 4 determines that the distributed processing requested from the terminal device 3 can be executed when the predicted TAT is equal to or less than the requested TAT, and requests the terminal device 3 when the predicted TAT is larger than the requested TAT. It is determined that the distributed processing that has been performed cannot be executed.

  Returning to FIG. 4, when the data processing device 4 determines whether or not the distributed processing requested by the terminal device 3 is executable, it creates a determination result and transmits it to the terminal device 3 in step S <b> 10. To do. When the terminal device 3 receives the determination result, the distributed processing entry process ends.

  When the terminal device 3 receives the determination result transmitted from the data processing device 4, the terminal device 3 confirms the content of the determination result. If a request for distributed processing is possible, the pre-processing data is transmitted to the data processing device 4 in step S11, and the distributed processing process is started.

  When the pre-processing data is transmitted from the terminal device 3, the data processing device 4 receives the transmitted data, processes the data to obtain processed data, and transmits the processed data to the terminal device 3. Moreover, in this Embodiment, the processor 12 of the terminal device 3 also performs a task, and processes data. To the pre-processing data and the processed data, an ID indicating the content of the data, the fact that it is before or after the processing is added.

  Then, when the processing of all the data is completed, the terminal device 3 creates a distributed processing end indicating that the distributed processing is ended in step S12 and transmits it to the data processing device 4.

  Note that when the terminal device 3 requests the data processing device 4 to perform different data processing, the distributed processing system 1 performs the processing subsequent to step S7 again.

  The distributed processing system 1 may be used in the home. When the distributed processing system 1 is used in the home, the terminal device 3 requests the data processing device 4 to perform data processing when the user requests data processing exceeding the processing capacity of the processor 12. It is also good.

  As shown in FIG. 8, the data processing device 4 may be provided with a plurality of wireless communication units 31a, 31b, 31c. By providing the plurality of wireless communication units 31a, 31b, and 31c, the data processing device 4 can reduce a decrease in processing capability that occurs when the distributed processing requested by the plurality of terminal devices 3 is simultaneously performed. Become.

  In addition, the plurality of wireless communication units 31a, 31b, and 31c may correspond to different wireless communication methods. For example, the wireless communication unit 31a is compatible with a wireless local area network (LAN), the wireless communication unit 31b is compatible with an ultra wide band (UWB) wireless PAN (personal area network), and the wireless communication unit 31c is infrared. It may be compatible with communication.

  Since the plurality of wireless communication units 31a, 31b, and 31c correspond to different wireless communication methods, the data processing device 4 can perform distributed processing requested from a terminal device that supports the plurality of wireless communication methods. Can be performed.

  As described above, in the distributed processing system 1 to which the present invention is applied, the terminal device 3 performs distributed processing on the data processing device 4 while being connected to the data processing device 4 via the wireless communication network 2. It becomes possible to request. That is, the terminal device 3 and the data processing device 4 are not connected by wire. Therefore, according to the distributed processing system 1 to which the present invention is applied, the terminal device 3 can be freely moved regardless of the position where the data processing device 4 is installed.

  Moreover, according to the distributed processing system 1 to which the present invention is applied, the terminal device 3 can request the data processing device 4 to perform distributed processing even when the terminal device 3 is portable. Therefore, for example, the data processing device 4 is installed in a public place such as a station, and the portable terminal device 3 can request the data processing device 4 to perform distributed processing while the user is moving. It can be used in various ways. Furthermore, even when used in the home, it is possible to give diversity to the installation locations of the data processing device 4 and the terminal device 3, and the convenience is improved.

  Further, in the distributed processing system 1 to which the present invention is applied, the presence of the data processing device 4 immediately after the terminal device 3 moves to a range where wireless communication with the data processing device 4 can be performed regardless of the intention of the user of the terminal device 3. It is possible to confirm authentication and finish processing such as authentication and association. Therefore, according to the distributed processing system 1 to which the present invention is applied, it is possible to shorten the time required for the distributed processing to end after the user requests the terminal device 3 to execute the distributed processing. Further, the user can confirm the presence of the data processing device 4 and eliminate the troublesome operation of the terminal device 3 to perform authentication.

It is a schematic diagram which shows the structure of the distributed processing system to which this invention is applied. It is a figure which shows the communication procedure when performing radio | wireless communication by the IEEE802.11 system. It is a figure which shows the structure of a distributed process request packet. It is a figure which shows the structure of a presence notification packet. It is a figure which shows the data communication performed between a terminal device and a data processor, when performing a distributed process with the distributed processing system to which this invention is applied. It is a flowchart which shows the evaluation method of the empty channel which a data processor performs. It is a flowchart which shows the evaluation method of the radio | wireless PHY mode which a data processor performs. It is a block diagram which shows a data processor provided with a some radio | wireless communication means.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Distributed processing system, 2 Wireless communication network, 3 Terminal device, 4 Data processing apparatus, 11 Wireless communication part, 12 Processor, 20 Distributed processing request packet, 21 Frame Body, 22 MAC Header, 23 FCS, 24 Unit ID, 25 Task Type, 26 Task Rate, 27 Task Period, 31 Wireless communication unit, 32 CPU, 33 Task memory, 34 Processor, 40 Presence notification packet, 41 Frame Body, 42 Unit ID, 43 Processor Type, 44 Processor Version, 45 Processor

Claims (12)

Distributed processing comprising a data processing device and a portable terminal device connectable via a wireless communication network, wherein the data processing device and the portable terminal device perform a series of data processing by distributing a load A system,
The data processing device includes: data processing means for processing data transmitted from the portable terminal device; and the portable terminal device transmitted from the portable terminal device to the data processing device. A determination result creating means for creating a determination result indicating whether or not the distributed processing requested by the distributed processing request can be executed based on the distributed processing request indicating the content of the requested distributed processing; and the data processing Presence notification packet creating means for creating a presence notification packet indicating the presence of the device, and the portable terminal device without receiving a signal for detecting the data processing device from the portable terminal device; A transmission means for constantly transmitting the presence notification packet,
When the portable terminal device moves the presence notification packet indicating the presence of the data processing device that is created and constantly transmitted by the data processing device to a range where wireless communication with the data processing device is possible In addition, confirmation means for confirming that the data processing device exists in a range in which wireless communication is possible by receiving from the data processing device without transmitting a signal for detecting the data processing device, After the confirmation means confirms that the data processing device is within a wireless communicable range, the data processing device creates a distributed processing request indicating the content of the distributed processing requested to the data processing device The distributed processing request creation means for transmitting to the data processing device and the distributed processing requested by the distributed processing request transmitted from the data processing device can be executed. When the determination result confirmation means for confirming the contents of the determination result indicating whether or not the distributed processing requested by the distributed processing request is executable by the determination result confirmation means, A distributed processing system comprising: transmission means for transmitting pre-processing data that is data before the distributed processing is performed to a data processing device. A data processing device that can be connected to a portable terminal device via a wireless communication network, and performs a series of data processing by distributing a load between the portable terminal device,
Data processing means for processing data transmitted from the portable terminal device;
The distribution requested by the distributed processing request based on the distributed processing request transmitted from the portable terminal device and indicating the content of the distributed processing requested by the portable terminal device to the data processing device. A judgment result creating means for creating a judgment result indicating whether or not the process is executable;
Presence notification packet creating means for creating a presence notification packet indicating the presence of the data processing device;
Transmission means for constantly transmitting the presence notification packet to the portable terminal device without receiving a signal for detecting the data processing device from the portable terminal device. Processing equipment.   3. An authentication means for authenticating the portable terminal device based on an authentication request for requesting authentication of the portable terminal device transmitted from the portable terminal device. Data processing equipment. A task storage means for storing tasks;
3. The data processing apparatus according to claim 2, wherein the data processing means processes data transmitted from the portable terminal device by executing a task stored in the task storage means.   The determination result creating means calculates an expected turnaround time that is expected to be actually required, and the expected turnaround time is requested to the data processing device transmitted from the portable terminal device. When the requested turnaround time is less than or equal to the request turnaround time, the content of the determination result can be distributed. When the expected turnaround time is longer than the request turnaround time, the content of the determination result is requested distributed. The data processing apparatus according to claim 2, wherein the data processing apparatus is not executable.   3. The data processing apparatus according to claim 2, further comprising a plurality of wireless communication means, wherein each wireless communication means can be used to execute distributed processing with different portable terminal devices.   7. The data processing apparatus according to claim 6, wherein the plurality of wireless communication means include devices having different communication methods. A portable terminal device that can be connected to a data processing device via a wireless communication network and performs a series of data processing by distributing a load between the data processing device,
The data processing device is detected when a presence notification packet indicating the presence of the data processing device, which is created by the data processing device and is constantly transmitted, is moved to a range where wireless communication with the data processing device is possible. Confirmation means for confirming that the data processing device is present in a wireless communicable range by receiving from the data processing device without transmitting a signal for
After the confirmation means confirms that the data processing device is within a wireless communicable range, the data processing device creates a distributed processing request indicating the content of the distributed processing requested to the data processing device. A distributed processing request creation means to be transmitted to
A determination result confirmation means for confirming the content of the determination result transmitted from the data processing device and indicating whether or not the distributed processing requested by the distributed processing request is executable;
When the determination result confirmation unit confirms that the distributed processing requested by the distributed processing request can be executed, the processing that is data before the distributed processing is performed on the data processing device A portable terminal device comprising: transmission means for transmitting previous data. With entry request creating means for creating an entry request for requesting entry of distributed processing to the data processing device,
9. The portable terminal device according to claim 8, wherein the entry request is transmitted before the distributed processing request is transmitted to the data processing device.   The distributed processing request creation means selects a task to be requested to be executed from the data processing apparatus from a list of task identifiers stored in the storage means of the data processing apparatus, and executes the selected task. 9. The portable terminal device according to claim 8, wherein the request for distributed processing is created.   9. The portable terminal device according to claim 8, wherein the distributed processing request creation means creates the distributed processing request including a requested turnaround time which is a turnaround time requested to the data processing device. . Distributed processing comprising a data processing device and a portable terminal device connectable via a wireless communication network, wherein the data processing device and the portable terminal device perform a series of data processing by distributing a load A system distributed processing method,
The terminal device moves the presence notification packet created by the data processing device and indicating the presence of the data processing device that is constantly transmitted from the data processing device to a range where wireless communication with the data processing device is possible. Position confirmation that confirms that the data processing device exists within a wireless communication range by receiving from the data processing device without transmitting a signal for detecting the data processing device. Steps,
The portable terminal device indicates the content of the distributed processing requested to the data processing device when it is confirmed in the position confirmation step that the data processing device is within a wireless communicable range. A distributed processing request creation step of creating a distributed processing request and transmitting the request to the data processing device;
A determination result creation step for creating a determination result by determining whether the data processing apparatus is capable of executing the distributed processing indicated by the distributed processing request created in the distributed processing request creation step;
A determination result confirmation step in which the portable terminal device confirms the content of the determination result created by the determination result creation step;
When the portable terminal device confirms that the distributed processing requested by the distributed processing request can be executed in the determination result confirmation step, the distributed processing is performed on the data processing device. A distributed processing method comprising: a transmission step of transmitting pre-processing data which is previous data.

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