JP2016116099A - Data processing method, data processing system and data processing program - Google Patents

Abstract

PROBLEM TO BE SOLVED: To cope with a plurality of communication protocols utilized by devices under a gateway terminal at one access point.SOLUTION: A protocol stack of a plurality of communication protocols used in a gateway terminal 30 at an access point is separated into a low-order common part and a high-order characteristic portion, the common portion is arranged in the gateway terminal 30, the characteristic portion is arranged in a server device 50 which is different from the gateway terminal 30, and a low-order layer of the common portion possessed by the gateway terminal 30 and a high-order layer of the characteristic portion possessed by the server device 50 are coordinated with each other.SELECTED DRAWING: Figure 2

Description

  The present invention relates to a technique for processing data from a device.

  Even for devices that use the same frequency band, different communication protocols are employed depending on applications and services provided. For example, in recent years, 920 MHz band radio allocated as an ISM band (Industrial, Scientific and Medical Band) is expected to be used in the HEMS (Home Energy Management System) market. ECHONET Lite, SEP (Smart Energy Profile), Wi- Various communication protocols such as SUN, KNX, ZIP, ENL, u-BusAir, etc. have been proposed.

  Which communication protocol is used to provide the service is determined by the service provider, and the service provider sells a device and an access point using the adopted communication protocol to the user and uses them. Providing services to users. For this reason, a user who wants to use a service or device needs to switch access points according to the service or device to be used, which is cumbersome and troublesome and requires a new purchase cost.

  For this reason, it is conceivable to adopt a method in which one device supports a plurality of communication protocols. Patent Document 1 proposes a method of switching a plurality of communication methods mounted on a terminal according to a communication situation.

JP 2007-181233 A

  In the case of Patent Document 1, a plurality of protocols are mounted on the access point. For example, by using an access point corresponding to two communication protocols A and B, it is possible to support two communication protocols.

  However, in order to support the communication protocol C in order to use a new service or device, an access point corresponding to the communication protocol C is newly added, or the current access point is changed to three communication protocols A and B. , C need to be exchanged.

  In general, an access point is provided by using a hardware extension function of a gateway terminal such as PCI or USB. Therefore, in the former method, since the number of PCI and USB ports of the gateway terminal is limited, the corresponding communication method is also limited. That is, there arises a problem due to restrictions due to the expandability of hardware and cost for exchanging access points. In the latter method, the number of communication protocols that can be dealt with due to the physical limitation of the upper limit of the storage capacity such as the RAM and ROM of the gateway terminal as well as the trouble and cost related to the cost of the gateway terminal replacement and firmware update. Will be limited. Therefore, there has been a problem that a communication protocol corresponding to a newly desired service cannot be added, and as a result, a new service cannot be used.

  The present invention has been made in view of the above circumstances, and an object of the present invention is to provide a method, a system, and a program that can handle a plurality of communication protocols used by devices under a gateway terminal with a single access point.

  In order to solve the above problems, the data processing method according to claim 1 is a data processing method in which data from a device is processed by a gateway terminal and a server device, wherein the gateway terminal is a communication used by each of a plurality of devices. A common processing step for processing data from a predetermined device using a lower layer protocol stack common to the protocol, and a transmission step for transmitting the processed data to the server device. A reception step of receiving data transmitted from the gateway terminal; a unique processing step of processing received data using a unique upper layer protocol stack that is different for each communication protocol used by the plurality of devices; It is summarized as having.

  The data processing method according to claim 2 is the protocol processing method according to claim 1, wherein, in the common processing step, the protocol stack includes only layers in which data communication between layers is not established due to occurrence of latency or packet loss. The gist is to process the data using.

  The data processing method according to claim 3 is the data processing method according to claim 1 or 2, wherein the specific processing step includes a plurality of specific processes for processing data using the specific upper layer protocol stack. Processed by the means, the server device stores a transmission schedule in which a timing at which data is transmitted and a type of communication protocol used by the data are associated with each other, and refers to the transmission schedule, A determination step for determining the type of communication protocol used by data transmitted at the next timing, and a command for changing the setting of the lower layer corresponding to the determined type of communication protocol are transmitted to the gateway terminal A transmission step, wherein the gateway terminal is transmitted from the server device. A receiving step for receiving the received command, and a changing step for changing the setting of the lower layer based on the received command, wherein the server device determines the data transmitted from the gateway terminal as the determined A distribution step for distributing to the specific processing means using a communication protocol of a type, a holding step for storing data processed by the distributed specific processing means, and a type of type used by the stored data based on the transmission schedule And a transmission step of transmitting the data to the gateway terminal at a timing at which a communication protocol can be transmitted.

  The data processing method according to claim 4 is the data processing method according to claim 3, wherein the server device stores a difference in setting of the lower layer between communication protocol types; The gist of the present invention is to further include a transmission step of transmitting, to the gateway terminal, a command for changing the setting difference corresponding to the determined communication protocol type.

  The data processing method according to claim 5 is the data processing method according to claim 1 or 2, wherein the specific processing step includes a plurality of specific processes for processing data using the specific upper layer protocol stack. Processed by the means, the gateway terminal stores a transmission schedule in which data transmission timing is associated with a type of communication protocol used by the data, and refers to the transmission schedule, According to the change step of acquiring the type of communication protocol used by the data transmitted at the next timing and changing the setting of the lower layer corresponding to the acquired type of communication protocol, and the type of the acquired communication protocol A granting step for granting a flag sent to the data transmitted at the next timing; And the server device is configured to determine, based on a flag attached to data from the gateway terminal, a determination step of determining a type of communication protocol used by the data, and data from the gateway terminal. A distribution step for distributing to the specific processing means using the communication protocol of the type, and a granting step for adding a flag according to the type of communication protocol used by the data to the data processed by the distributed specific processing means; The gateway terminal holds a determination step of determining a type of communication protocol used by the data based on a flag given to the data from the server device, and the determined data Based on the holding step and the transmission schedule, the held data uses it. A transmission step of transmitting the data to the device in a transmittable timing another communication protocol, and summarized in that further comprising a.

  The data processing method according to claim 6 is the data processing method according to any one of claims 1 to 5, wherein the lower layers are a physical layer and a data link layer of a protocol stack according to a home energy management system. Is the gist.

  The data processing system according to claim 7, wherein the gateway terminal and the server device process data from the device, wherein the gateway terminal is a lower layer protocol common to communication protocols used by a plurality of devices, respectively. A common processing unit that processes data from a predetermined device using a stack; and a transmission unit that transmits the processed data to the server device. The server device transmits data transmitted from the gateway terminal. And a unique processing means for processing the received data using a unique upper layer protocol stack that is different for each communication protocol used by each of the plurality of devices.

  The data processing system according to claim 8 is the data processing system according to claim 7, wherein the common processing means is a protocol stack including only layers in which data communication between layers is not established due to occurrence of latency or packet loss. The gist is to process the data using.

  A gist of a data processing program according to a ninth aspect is to cause a computer to execute the data processing method according to any one of the first to sixth aspects.

  ADVANTAGE OF THE INVENTION According to this invention, the method, system, and program which can respond | correspond to the some communication protocol which the device under a gateway terminal uses with one access point can be provided.

It is a figure which shows the example of isolation | separation of a protocol stack. It is a figure which shows the basic composition of a data processing system. It is a figure which shows the basic processing flow of a data processing system. It is a figure which shows the structure of a data processing system. It is a figure which shows the processing flow based on the structure of FIG. It is a figure which shows the example of a transmission schedule. It is a figure which shows the processing flow based on the structure of FIG. It is a figure which shows the structure of a data processing system. It is a figure which shows the processing flow based on the structure of FIG. It is a figure which shows the structure of a data processing system. It is a figure which shows the processing flow based on the structure of FIG. It is a figure which shows the processing flow based on the structure of FIG. It is a reference figure at the time of explaining an effect.

  In order to solve the above-described problem, the present invention separates a protocol stack of a plurality of communication protocols used in a gateway terminal of an access point into a common part and a specific part, and arranges the common part in the gateway terminal. Is placed in a server device separate from the gateway terminal.

  Specifically, the lower layer protocol stack that is common among the protocol stacks of each communication protocol used by devices under the gateway terminal is left in the gateway terminal, and a unique upper layer protocol stack that differs for each communication protocol is stored in the server device. Separately deployed, the lower layer and upper layer protocol stacks of the gateway terminal and the server device are linked to each other. The lower layer refers to a layer classified into a group close to the physical layer when separating into two groups with an arbitrary layer in the OSI reference model as a boundary. The upper layer refers to a layer classified into a group close to the application layer.

  Here, if a packet is transmitted between layers via a network by leaving the common part on the gateway terminal side, communication may not be established due to a problem of latency or packet loss. Therefore, as a lower layer to be left on the gateway terminal side, a layer including restrictions on latency and packet loss in communication between layers, and a layer common to all communication protocol stacks used under the gateway terminal are selected. .

  In particular, when the common parts are counted from the physical layer to the application layer, the number of common parts is determined to be minimum. For example, a plurality of communication protocols used under a gateway terminal are shared and the same protocol is used up to the network layer. However, if a delay occurs in communication between the physical layer and the data link layer, communication is not established. If there is a restriction, the data link layer is left on the gateway terminal side. Although the network layer is also a common layer among multiple communication protocols, there is no latency or packet loss constraint in communication between the data link layer and the network layer, so communication can be established even through the network. It may be arranged on either side of the gateway terminal or the server device.

  Hereinafter, an embodiment for carrying out the present invention will be described with reference to the drawings. In this embodiment, a case where a plurality of HEMS communication protocols in the 920 MHz band are used in one access point will be described.

  As described above, the HEMS communication protocol includes ECHONET Lite (each method of A to C), SEP2.0, and the like. In the HEMS communication protocol, protocols that are commonly used in various systems, such as IEEE802.15.4 / g for the physical layer and IEEE802.5.4 / e for the data link layer, are standardized. In the HEMS communication protocol, if there is latency or packet loss in communication between the physical layer and the data link layer, communication between the device and the access point cannot be established. On the other hand, there are several methods in the network layer. In each of the systems described above, the network layer system is different, and there is a network layer that does not use a dedicated system, such as the ECHONET Lite C system.

  Therefore, when using a plurality of protocol stacks of HEMS communication protocols, as shown in FIG. 1, the lower layer up to the data link layer is arranged on the gateway terminal side as a common part, and the upper layer above the network layer is unique. Arranged as a part on the server device side, the lower layer of the common part and the upper layer of the unique part are operated in cooperation between different apparatuses. This makes it possible to support a plurality of HEMS communication protocols with one access point.

  FIG. 2 shows the configuration of the data processing system according to this embodiment. The data processing system 1 includes a device 10, a gateway terminal 30, and a server device 50.

  The plurality of devices 10 are data transmission terminals that wirelessly transmit data to the gateway terminal 30 using different HEMS communication protocols. For example, the transmitter 101 is configured to wirelessly transmit data using any HEMS communication protocol. One device 10 may support a plurality of HEMS communication protocols.

  The gateway terminal 30 accommodates a plurality of devices 10 and functions as a direct access point for the plurality of devices 10. For example, a receiving unit 301 that receives data from the device 10, a protocol stack common unit 302 that processes received data using a HEMS communication protocol (hereinafter, a common protocol stack) from the physical layer to the data link layer, and processing And a transmission unit 303 that transmits subsequent data to the server device 50 in the subsequent stage.

  The server device 50 is communicably connected to the gateway terminal 30 in a wired or wireless manner, and is a server that performs processing according to a specific part of the protocol stack of the HEMS communication protocol. Function as. For example, the reception unit 501 that receives data transmitted from the gateway terminal 30 and the HEMS communication protocol (hereinafter referred to as a specific protocol stack) from the network layer to the application layer are used in accordance with the HEMS communication protocol of the received data. And a plurality of protocol stack specific units 502 that perform processing. For example, the protocol stack A specific section 502a processes ECHONET Lite A format data, the protocol stack B specific section 502b processes ECHONET Lite B format data, and the protocol stack B specific section 502n processes SEP2.0 data. To do.

  Next, processing operations performed by the data processing system 1 will be described. FIG. 3 is a diagram showing a processing flow of the data processing system 1.

  First, in step S101, for example, the device 10 wirelessly transmits data to the gateway terminal 30 of the access point using the HEMS communication protocol A of the ECHONET Lite A method.

  Next, in step S <b> 102, when the gateway terminal 30 receives data of the HEMS communication protocol A from the device 10 by the receiving unit 301, the gateway terminal 30 transfers the data to the protocol stack common unit 302.

  Next, in step S103, the protocol stack common unit 302 processes the data transferred from the reception unit 301 using the above-described common protocol stack, and transmits the processed data from the transmission unit 303 to the server device 50. Send.

  Next, in step S104, when the server device 50 receives the HEMS communication protocol A data from the gateway terminal 30 by the receiving unit 501, the protocol stack A specific unit that performs processing using the HEMS communication protocol A Transfer to 502a.

  Finally, in step S105, the protocol stack A specific unit 502a processes the data transferred from the reception unit 501 using the above-described specific protocol stack (here, the HEMS communication protocol A of the ECHONET Lite A method). .

[Data link layer setting method]
Next, a method for changing various settings of the data link layer will be described. The gateway terminal 30 uses the same data link layer for different communication protocols. However, various settings (setting targets, setting values) of the data link layer differ depending on the type and method of communication protocol (hereinafter simply referred to as type). For example, in the case of the communication protocol A, a network ID, a channel number, transmission power, and a PAN (Personal Area Network) ID are set. Therefore, hereinafter, a method for setting the data link layer in advance according to the timing at which the device 10 transmits data and the communication protocol used at that time will be described.

(Data link layer setting method 1)
First, a method in which the server device 50 has a transmission schedule and changes various settings of the data link layer corresponding to a predetermined communication protocol based on the transmission schedule will be described (setting method 1).

  FIG. 4 is a diagram showing a configuration of the data processing system 1 corresponding to the setting method 1. In addition to the configuration shown in FIG. 2, the server device 50 stores a transmission schedule DB 503 for storing a transmission schedule (type of communication protocol for each transmission timing) of data transmitted from the device 10, and the next based on the transmission schedule. A protocol determination unit 504 for determining the type of communication protocol used when data is transmitted, and a setting change command for transmitting a setting change command for changing various settings of the data link layer corresponding to the determined communication protocol type A transmission unit 505, a protocol distribution unit 506 that distributes received data to a protocol stack specific unit 502 that performs data processing using the determined type of communication protocol, a cache 507 that stores processed data, and a post-processing A transmission control unit 508 for transmitting data to the gateway terminal 30; Further comprising constructed a.

  In addition to the configuration shown in FIG. 2, the gateway terminal 30 is transmitted from the server device 50 and a setting change unit 304 that changes various settings of the data link layer based on a setting change command transmitted from the server device 50. And a receiving unit 305 for receiving the processed data.

  Next, the processing operation in the setting method 1 will be described. FIG. 5 is a diagram illustrating a processing flow when data is received from the device 10. Similarly to the case described with reference to FIG. 3, the data from the device 10 is processed by the protocol stack common unit 302 of the gateway terminal 30 and transferred to the server device 50, and the server device 50 uses the communication used by the device 10. It is assumed that the packet transferred from the gateway terminal 30 is processed using the protocol stack specific unit 502 corresponding to the protocol.

  First, in step S201, the protocol determination unit 504 acquires the type of communication protocol used at the time of the next data transmission from the transmission schedule DB 503. In step S202, the protocol determination unit 504 sets the acquired communication protocol type to the setting change command transmission unit 505. The data is transmitted to the protocol distribution unit 506.

  Here, the transmission schedule DB will be described. The transmission schedule DB 503 stores a transmission schedule in which data transmission timing from the device 10 is associated with the type of communication protocol used at that time. For example, as shown in FIG. 6, a schedule is managed in which the SEP 2.0 communication protocol is used at the transmission timing t, and the ECHONET Lite A communication protocol is used at the transmission timing t + 1. This transmission schedule may be constructed manually, for example, by collecting the communication protocol types of data transmitted from the devices 10 under the gateway terminal 30, and based on the data transmission time, the data of each communication protocol is collected. You may automate by the method of creating a transmission schedule.

  Next, in step S203, the setting change command transmission unit 505 transmits a setting change command for changing various settings of the data link layer corresponding to the type of the transmitted communication protocol to the gateway terminal 30.

  In step S204, when the gateway terminal 30 receives the setting change command from the server device 50, the setting change unit 304 uses the data link layer used by the protocol stack common unit 302 based on the setting information included in the setting change command. Change various settings. For example, when the type of communication protocol used at the time of the next data transmission is the ECHONET Lite A method, and the setting target of the data link layer corresponding to the type of the communication protocol is the network ID, channel number, transmission power, and PAN ID Change the values of all these settings.

  In parallel with step S204, in step S205, in the server device 50, the protocol distribution unit 506 determines the distribution destination of the data transferred from the gateway terminal 30 next to the communication protocol transmitted from the protocol determination unit 504. This is set in the protocol stack specific unit 502 using the type.

  Subsequently, when the device 10 transmits data to the gateway terminal 30 in step S206, the gateway terminal 30 receives the data in the reception unit 301 in step S207, and uses the common protocol stack in the protocol stack common unit 302. After the data is processed, the transmission unit 303 transmits the processed data to the server device 50.

  Thereafter, in step S208, when the server device 50 receives the data from the gateway terminal 30 by the receiving unit 501, the server device 50 passes the data to the protocol distribution unit 506, and the protocol distribution unit 506 transmits the data based on the set distribution destination to the protocol. The data is transferred to the stack specific unit 502, and the protocol stack specific unit 502 processes the transferred data.

  Next, the processing operation when transmitting processed data from the access point to the device 10 will be described. FIG. 7 is a diagram illustrating a processing flow when data is transmitted to the device 10.

  First, in step S301, the protocol stack specific unit 502 processes the data distributed by the protocol distribution unit 506, and then temporarily stores the data and the type of communication protocol used by the data in the cache 507. To do.

  Next, in step S302, the transmission control unit 508 stores the data held in the cache 507 at a timing at which the gateway terminal 30 can receive the communication protocol based on the type of communication protocol acquired from the protocol determination unit 504. It transmits to the gateway terminal 30.

  Next, in step S303, when the gateway terminal 30 receives the data by the receiving unit 305, the gateway terminal 30 transfers the data to the protocol stack common unit 302. The protocol stack common unit 302 uses the common protocol stack to receive the data from the reception unit 301. The transferred data is processed, and the data is transmitted to the device 10 in step S304.

(Data link layer setting method 2)
In the setting method 1 described above, a case has been described in which all the various settings (setting targets, setting values) of the data link layer corresponding to a predetermined communication protocol are transmitted. On the other hand, there are common settings between communication protocols depending on the combination of communication protocols to be used. For example, in the two communication protocols A and B, it is conceivable that the set power of the data link layer is set to the same value. In such a case, since it is not necessary to re-change common settings in accordance with the timing of switching the communication protocol, it is a waste of resources to transmit all pieces of setting information every time.

  Therefore, in the setting method 2, setting information common to the communication protocols and unique setting information different for each communication protocol are extracted from various setting information of the data link layer. For example, the common setting information is transmitted to the gateway terminal 30 at the time of initial setting transmission, and only the unique setting information is transmitted at the timing of switching the communication protocol type.

  FIG. 8 is a diagram showing a configuration of the data processing system 1 corresponding to the setting method 2. The server device 50 stores, in addition to the configuration of the setting method 1, unique setting information that differs between communication protocols among various setting information of the data link layer (that is, a setting difference between types of communication protocols in the data link layer). The configuration difference DB 509 is further provided. The unique setting information may be manually performed, or may be automatically extracted and updated every time a new communication protocol appears under the gateway terminal 30. The configuration of the gateway terminal 30 is the same as the configuration of the setting method 1.

  Next, the processing operation in the setting method 2 will be described. FIG. 9 is a diagram showing a processing flow in the setting method 2.

  First, in step S401, the protocol determination unit 504 acquires the type of communication protocol used for the next data transmission from the transmission schedule DB 503. In step S402, the protocol determination unit 504 sets the acquired communication protocol type to the setting change command transmission unit 505. The data is transmitted to the protocol distribution unit 506.

  Next, in step S403, when the setting change command transmission unit 505 transmits the setting change command for the first time, the setting change command for changing all the various settings of the data link layer corresponding to the type of the transmitted communication protocol. It transmits to the gateway terminal 30. On the other hand, if setting change information has been transmitted in the past, unique setting information corresponding to the type of the next communication protocol is acquired from the setting difference DB 509, and a setting change command for changing only the unique setting information Is transmitted to the gateway terminal 30.

  For example, when the communication protocol used at the time of the next data transmission is A and the setting change command is generated for the first time, all the various setting information of the data link layer corresponding to the communication protocol A (for example, the network ID, channel number, transmission power, PAN ID) are set, and transmitted as a setting change command together with each setting value to be set. Thereafter, when the communication protocol used at the time of the next data transmission is switched from A to B, and the transmission power is also a setting object among the above setting objects, various setting information of the data link layer corresponding to the communication protocol B Among them, a setting change command for setting a part (for example, network ID, channel number, PAN ID) excluding the transmission power is transmitted.

  Thereafter, in step S404, when the gateway terminal 30 receives the setting change command from the server device 50, the setting change unit 304 determines the data link layer used by the protocol stack common unit 302 based on the setting information included in the setting change command. Change various settings. In the above example, when the former setting change command is received, the network ID, channel number, transmission power, and PAN ID of the data link layer are changed. On the other hand, when the latter setting change command is received, only the other setting information except the transmission power is changed.

  In this way, by transmitting only the changed setting location according to the communication protocol and updating the setting, it is possible to reduce the data amount and speed up the setting process. In addition, each process of step S405-step S408 is the same as that of each process of step S205-step S208, respectively.

(Data link layer setting method 3)
Next, a case where the transmission schedule is held on the gateway terminal side will be described (setting method 3). The contents of the transmission schedule are the same as those described in setting method 1.

  FIG. 10 is a diagram showing a configuration of the data processing system 1 corresponding to the setting method 3. In addition to the configuration shown in FIG. 2, the server device 50 has a protocol determination unit 504 that determines the type of the communication protocol of the received data based on the flag added to the received data, and the type of the determined communication protocol. A protocol distribution unit 506 that distributes received data to the protocol stack specific unit 502 that performs processing, a flag assignment unit 510 that assigns a flag corresponding to the type of communication protocol of the data to the processed data, and the flag assignment And a transmission unit 511 that transmits the processed data to the gateway terminal 30.

  In addition to the configuration shown in FIG. 2, the gateway terminal 30 includes a transmission schedule DB 306 that stores a transmission schedule of data transmitted from the device 10, and a communication protocol used at the time of next data transmission from the transmission schedule. The setting change unit 304 that changes various settings of the data link layer corresponding to the acquired communication protocol, and the flag of the acquired type for the processed data transmitted from the device 10 A flag assigning unit 307 to be assigned, a receiving unit 305 that receives processed data to which the flag is assigned from the server device 50, and a communication protocol of the data after the processing based on the flag given to the processed data. A protocol determination unit 308 that determines the type, a cache 309 that stores the processed data, and a post-processing A transmission control section 310 that transmits data to the device 10, further comprising constructed a.

  Next, the processing operation in the setting method 3 will be described. FIG. 11 is a diagram illustrating a processing flow when data is received from the device 10.

  First, in step S501, the setting changing unit 304 acquires the type of communication protocol used at the time of the next data transmission from the transmission schedule DB 306, changes various settings of the data link layer corresponding to the acquired communication protocol, Further, the type of the acquired communication protocol is notified to the flag assigning unit 307.

  Subsequently, when the device 10 transmits data to the gateway terminal 30 in step S502, the gateway terminal 30 receives the data in the reception unit 301 in step S503, and uses the common protocol stack in the protocol stack common unit 302. After the data is processed, the data is transmitted to the flag assigning unit 307.

  Next, in step S504, the flag assigning unit 307 receives the data processed by the protocol stack common unit 302 and assigns a flag according to the type of communication protocol notified from the setting change unit 304. In step S505, The data with the flag is transmitted to the server device 50 through the transmission unit 303.

  Next, in step S506, the server device 50 passes the data received by the reception unit 501 to the protocol determination unit 504. In step S507, the protocol determination unit 504 performs communication based on the flag added to the data. The protocol type is determined, and the data and the communication protocol type are transmitted to the protocol distribution unit 506.

  In step S508, the protocol distribution unit 506 distributes data to the protocol stack specific unit 502 corresponding to the type of communication protocol notified from the protocol determination unit 504.

  Finally, in step S509, the protocol stack specific unit 502 processes the distributed data.

  Next, a processing operation when transmitting processed data from the access point to the device 10 will be described. FIG. 12 is a diagram illustrating a processing flow when data is transmitted to the device 10.

  First, in step S601, the protocol stack specific unit 502 processes the distributed data, and then transmits the processed data to the flag assigning unit 510. The flag assigning unit 510 uses the processed data. A flag corresponding to the type of communication protocol being used is assigned. Thereafter, the transmission unit 511 transmits the processed data to which the flag is assigned to the gateway terminal 30.

  Next, in step S602, when the gateway terminal 30 receives the processed data to which the flag has been added by the receiving unit 305, the protocol determination unit 308 performs the processing based on the flag added to the processed data. The type of the communication protocol of the processed data is determined, and the data and the determined communication protocol type are set as a set and temporarily held in the cache 309.

  Next, in step S603, the transmission control unit 310 refers to the type of communication protocol used at the time of the next data transmission notified from the setting change unit 304, and subordinates the data held in the cache 309 to the gateway terminal 30. When the transmission protocol type of the data is the same as the communication protocol notified from the setting change unit 304, the data is read from the cache 309 and transmitted to the protocol stack common unit 302. To do.

  Finally, in step S604, the protocol stack common unit 302 processes the data transmitted from the transmission control unit 310 and transmits the data to the device 10.

  The setting method 2 described above may be applied to the setting method 3. That is, the gateway terminal 30 holds the setting difference DB 509 of the server device 50, sets common setting information at the time of initial setting transmission, and sets only unique setting information at the timing of switching the communication protocol type. Thereby, since the number of setting objects decreases, the processing in the setting change unit 304 is reduced, and the processing load on the gateway terminal 30 can be reduced.

  As described above, the protocol stacks of a plurality of communication protocols used in the gateway terminal 30 of the access point are separated into a lower common part and an upper specific part, the common part is arranged in the gateway terminal 30, and the specific part is Since the lower layer of the common part of the gateway terminal 30 and the upper layer of the unique part of the server device 50 are arranged in the server device 50 separate from the terminal 30, as shown in FIG. It is possible to remove restrictions due to the hardware expandability of the terminal 30 (the limit of the number of PCIs, the number of USB ports, etc.) and support various communication protocols with one access point. When supporting a new communication protocol, it is only necessary to add a unique protocol stack on the server device side, so that it is possible to reduce operational costs and maintenance costs in addition to access point manufacturing and installation costs. Become. Further, since only the minimum functions are mounted on the gateway terminal side, it is possible to expand the functions of the gateway terminal with insufficient RAM and ROM in cooperation with the server device.

DESCRIPTION OF SYMBOLS 1 ... Data processing system 10 ... Device 101 ... Transmission part 30 ... Gateway terminal 301 ... Reception part 302 ... Protocol stack common part 303 ... Transmission part 304 ... Setting change part 305 ... Reception part 306 ... Transmission schedule DB
307: Flag assigning unit 308: Protocol determining unit 309 ... Cache 310 ... Transmission control unit 50 ... Server device 501 ... Receiving unit 502 ... Protocol stack specific unit 503 ... Transmission schedule DB
504 ... Protocol determination unit 505 ... Setting change command transmission unit 506 ... Protocol distribution unit 507 ... Cache 508 ... Transmission control unit 509 ... Setting difference DB
510 ... Flag giving unit 511 ... Transmitting unit S101-S105, S201-S208, S301-S304, S401-S408, S501-S509, S601-S604 ... step

Claims (9)

In a data processing method for processing data from a device at a gateway terminal and a server device,
The gateway terminal is
A common processing step of processing data from a predetermined device using a lower layer protocol stack common to communication protocols used by a plurality of devices;
Transmitting the processed data to the server device,
The server device
A receiving step of receiving data transmitted from the gateway terminal;
A unique processing step of processing received data using a unique upper layer protocol stack that is different for each communication protocol used by each of the plurality of devices;
A data processing method characterized by comprising: In the common processing step,
The data processing method according to claim 1, wherein data is processed using a protocol stack including only layers in which data communication between layers is not established due to occurrence of latency or packet loss. The specific processing step is processed by a plurality of specific processing means for processing data using the specific upper layer protocol stack,
The server device
A storage step for storing a transmission schedule in which data transmission timing is associated with a type of communication protocol used by the data;
A determination step of referring to the transmission schedule and determining a type of communication protocol used by data transmitted at the next timing;
A transmission step of transmitting to the gateway terminal a command for changing the setting of the lower layer corresponding to the determined communication protocol type,
The gateway terminal is
A receiving step of receiving a command transmitted from the server device;
A change step for changing the setting of the lower layer based on the received command;
The server device
A distribution step of distributing the data transmitted from the gateway terminal to the specific processing means using the determined type of communication protocol;
A holding step for holding data processed by the assigned unique processing means;
A transmission step of transmitting the data to the gateway terminal at a timing capable of transmitting a type of communication protocol used by the stored data based on the transmission schedule;
The data processing method according to claim 1, further comprising: The server device
A storage step of storing a difference in setting of the lower layer between types of communication protocols;
A transmission step of transmitting, to the gateway terminal, a command for changing the setting difference corresponding to the determined communication protocol type;
The data processing method according to claim 3, further comprising: The specific processing step is processed by a plurality of specific processing means for processing data using the specific upper layer protocol stack,
The gateway terminal is
A storage step for storing a transmission schedule in which data transmission timing is associated with a type of communication protocol used by the data;
A step of referring to the transmission schedule, obtaining a type of a communication protocol used by data transmitted at the next timing, and changing a setting of the lower layer corresponding to the type of the obtained communication protocol;
A granting step of granting a flag according to the type of the acquired communication protocol to the data transmitted at the next timing;
The server device
A determination step of determining a type of a communication protocol used by the data based on a flag attached to the data from the gateway terminal;
A distribution step of distributing data from the gateway terminal to the specific processing means using the determined type of communication protocol;
An addition step of assigning a flag corresponding to the type of communication protocol used by the data to the data processed by the assigned unique processing means;
The gateway terminal is
A determination step of determining a type of a communication protocol used by the data based on a flag attached to the data from the server device;
A holding step for holding the determined data;
A transmission step of transmitting the data to the device at a timing capable of transmitting a communication protocol of a type used by the stored data based on the transmission schedule;
The data processing method according to claim 1, further comprising:   The data processing method according to claim 1, wherein the lower layer is a physical layer and a data link layer of a protocol stack related to Home Energy Management System. In a data processing system that processes data from a device with a gateway terminal and a server device,
The gateway terminal is
Common processing means for processing data from a predetermined device using a lower layer protocol stack common to communication protocols used by a plurality of devices,
Transmission means for transmitting the processed data to the server device,
The server device
Receiving means for receiving data transmitted from the gateway terminal;
Specific processing means for processing received data using a unique upper layer protocol stack that is different for each communication protocol used by the plurality of devices,
A data processing system comprising: The common processing means includes
The data processing system according to claim 7, wherein data is processed using a protocol stack including only layers in which data communication between layers is not established due to occurrence of latency or packet loss.   A data processing program for causing a computer to execute the data processing method according to claim 1.

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