WO2001020849A1 - Procede de telechargement avec emploi d'un dispositif cote emission et d'un dispositif cote reception - Google Patents

Procede de telechargement avec emploi d'un dispositif cote emission et d'un dispositif cote reception Download PDF

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Publication number
WO2001020849A1
WO2001020849A1 PCT/JP1999/005049 JP9905049W WO0120849A1 WO 2001020849 A1 WO2001020849 A1 WO 2001020849A1 JP 9905049 W JP9905049 W JP 9905049W WO 0120849 A1 WO0120849 A1 WO 0120849A1
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WO
WIPO (PCT)
Prior art keywords
data
download
broadcast
information
receiving
Prior art date
Application number
PCT/JP1999/005049
Other languages
English (en)
Japanese (ja)
Inventor
Katsumi Shimada
Akinori Kamijo
Tomiko Ito
Original Assignee
Fujitsu Limited
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Fujitsu Limited filed Critical Fujitsu Limited
Priority to PCT/JP1999/005049 priority Critical patent/WO2001020849A1/fr
Publication of WO2001020849A1 publication Critical patent/WO2001020849A1/fr

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Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L12/00—Data switching networks
    • H04L12/02—Details
    • H04L12/16—Arrangements for providing special services to substations
    • H04L12/18—Arrangements for providing special services to substations for broadcast or conference, e.g. multicast

Definitions

  • the present invention relates to a down-loading method and a transmitting device applied thereto and a receiving device.
  • the present invention relates to a download method and a transmitting device and a receiving device applied thereto, and a method of downloading data from a transmitting device to a plurality of receiving devices connected to the transmitting device, and a transmission applied to the method. It relates to the receiving device and the receiving device. Background art
  • the subscriber line terminating equipment connected to one line terminating equipment operates differently even if the program that runs it is different, or even if the equipment has the same manufacturer.
  • the version of the program to be used may be different.
  • the following method is known as a method for determining whether to receive data broadcast by a receiving device when data is simultaneously transmitted to multiple devices by broadcasting.
  • the transmitting device arranges the data for each device on the receiving side in a fixed order and transmits it by broadcast, and each receiving device determines the number of data to be taken out of the transmitted data. It is stored in advance, and each receiving device counts the number of received data and receives the data corresponding to its own device.
  • Such a method is described, for example, in Japanese Patent Application Laid-Open No. Hei 2-206865.
  • the program is divided into blocks, and information as to which block the receiving device takes in is determined in advance and held.
  • the transmitting device sequentially sends a block by broadcast, and each receiving device selects a block corresponding to its own device and loads it directly into memory.
  • Such a method is described in, for example, Japanese Patent Application Laid-Open No. 60-205632.
  • the following method is known as a method of transmitting file data by broadcast and updating the files of multiple target devices at once.
  • the above methods (b) and (c) are different from (a) in that they are transmitted by broadcast. It is more efficient than the law.
  • the order of transmission data is determined in advance, and information about which data is to be received is transmitted to each subscriber line termination device on the receiving side beforehand. The problem is that complicated operations become difficult.
  • a program to be transmitted is divided into blocks in advance, and information on which block is received by each subscriber line termination device on the receiving side is transmitted in advance.
  • a complicated operation is required in advance to specify which data is received by the line termination device, and it is not possible to download different programs to different subscriber line termination devices at the same time.
  • the update information is always added to the header of each packet, and if the data length of one bucket is short, such as an ATM cell (53 bytes), the ratio of file data
  • the size is small and waste is large.
  • the present invention provides a download method capable of improving data fe efficiency and downloading data in a short period of time without performing complicated operations in advance, and testing a transmitting device and a receiving device applied thereto.
  • a general purpose a download method capable of improving data fe efficiency and downloading data in a short period of time without performing complicated operations in advance, and testing a transmitting device and a receiving device applied thereto.
  • the present invention selects " ⁇ " among a plurality of receiving devices connected to a transmitting device, and broadcasts the selected device to the selected receiving device from the transmitting device.
  • a download method for downloading data
  • the transmitting device broadcasts a download start message including the target device designation information and the broadcast identifier to all the receiving devices.
  • the knitting transmitting device broadcasts a data message including the same broadcast identifier and data as the knitting start message to all receiving devices,
  • the attribute information of the own device stores a broadcast identifier from the down-port start message, Thereafter, when the broadcast identifier of the data message is equal to the broadcast identifier stored in the own device, each receiving device is configured to capture the data of the data message.
  • a complicated message is not required in advance to specify which receiving device receives which data, and a message having information for identifying the target device, Since the data for data transmission is separated from the data for data transmission, there is no need to set update information in the data for data transmission, which improves the data efficiency and the data with the information for specifying the location and the data for data transmission
  • the data can be downloaded in a short time to broadcast the message.
  • FIG. 1 is a system configuration diagram of an embodiment of an ATM-PON to which the present invention is applied.
  • FIG. 2 is a block diagram of an embodiment of a part to which the present invention is applied in a subscriber line termination device.
  • FIG. 3 is a block diagram of an embodiment of a portion to which the present invention is applied in a line termination device.
  • FIG. 4 is a diagram showing the format of a PLOAM cell and a download cell for download start.
  • FIG. 5 is a flowchart of one embodiment of the processing executed by the subscriber line terminal.
  • FIG. 6 is a data flow of the first embodiment of the system to which the present invention is applied.
  • FIG. 7 is a data diagram of a second embodiment of the system to which the present invention is applied.
  • FIG. 8 is a data flow of the third embodiment of the system to which the present invention is applied.
  • FIG. 9 is a data flow of a fourth embodiment of the system to which the present invention is applied.
  • FIG. 1 shows a system configuration diagram of an embodiment of an ATM-PON to which the present invention is applied.
  • N subscriber line terminators 1 0, -1 ON 2 and the optical path 14 are connected in a star shape.
  • Terminal devices 16 to 16 N are connected to the respective subscriber line terminating devices 10 to 1 ON.
  • the downstream ATM cells from the line terminating device 12 to each of the subscriber line terminating devices 1 Oj to 1 ON are branched at the optical splitter 18, and all the subscriber line terminating devices 1 (to 10 The same ATM cell is transmitted to N.
  • Each network unit 1 0, to 1 0 N refers to the header part of the received ATM cell, it has a function to determine whether Heck JiSo. That is, if it is determined from the header of the received ATM cell that the ATM cell is a broadcast cell, the ATM cell is received by all the subscriber line terminating devices 10 to 1 ON. At this time, each subscriber line terminating device receives the ATM cell if the header is the value associated with the own device, and if the header is not the value associated with the own device, the ATM cell receives the ATM cell. ATM cells are discarded without being received.
  • FIG. 2 is a block diagram showing an embodiment of a part to which the present invention is applied in a subscriber line termination device.
  • a transmission / reception unit 21 transmits / receives ATM cells to / from a line termination device 12.
  • the ATM cell received by the transmission / reception unit 21 is supplied to the reception data distribution unit 22.
  • the reception data distributing unit 22 receives the received ATM cell from a PL OAM (Physica 1 Layer Operation on Ad m inistrati on Ma int ence nce) cell for starting the download or a cell of normal data addressed to the own device. It is determined whether the cell is a download data cell addressed to the own device.
  • PL OAM Physical Layer Operation on Ad m inistrati on Ma int ence nce
  • the received data distribution unit 22 supplies the target device designation information extracted from the PL0 AM cell to the determination means 23 by itself, and outputs the normal data addressed to the own device. If it is a cell, it is supplied to the normal data processing unit 25, and if it is a down-to-one data cell addressed to its own device, it is supplied to the down-to-data processing unit 26.
  • the device TO information storage unit 24 is a non-volatile memory, and includes “device serial number”, “production date”, “hardware version J”, “device type”, and “production Maker identification number ”and“ Software / firmware version ”are stored. Attribute information for identifying each device is stored in the device when the device is manufactured. That is, the equipment information storage unit 24 is an existing circuit.
  • the own device address determination means 23 reads the attribute information of the own device from the device attribute information storage unit 24, compares the attribute information with the target device designation information extracted from the PL OAM cell, and outputs a PL 0 AM for starting the download. It is determined whether or not the cell is addressed to the own device, and the result of the determination is notified to the reception data distribution unit 22.
  • the reception data distribution unit 22 extracts the program broadcast identifier from the PL0 AM cell for starting the download, It is stored in the register in the reception data distribution unit 22.
  • the normal data processing unit 25 performs the normal data processing supplied from the reception data distribution unit 22.
  • the download data processing unit 26 extracts program data from the download data cell addressed to the own device supplied from the reception data distribution unit 22 and stores the program data in the download data storage unit 27.
  • FIG. 3 is a block diagram showing an embodiment of a portion to which the present invention is applied in the line terminating device.
  • a sequence control unit 31 activates a download data transmission identifier definition unit 32 and a download data transmission destination definition unit 33 according to a program download procedure.
  • the download data overnight transmission identifier definition unit 32 is activated, the program broadcast identifier, which is defined in advance, is downloaded.
  • the download start PLO AM cell generation unit 34 and the download data overnight generation unit 3 5 To supply.
  • the download data transmission destination definition section 33 is started, it supplies a transmission destination defined in advance to the download start PL0 AM cell creation section 34.
  • the download start PL ⁇ AM cell creation unit 34 is supplied with the program broadcast identifier and the transmission destination, creates the download start PL0 AM cell shown in FIG. 4 (A), and sends it together with the broadcast data transmission request. This is supplied to the transmission / reception section 37.
  • the PL OAM cell for starting the download has a broadcast header at the beginning as shown in Fig. 4 (A). This part corresponds to a 5-byte ATM header containing VPI / VC I (virtual path identifier Z virtual channel identifier), and indicates the broadcast of PT (payload type) power OAM in the ATM header.
  • VPI / VC I virtual path identifier Z virtual channel identifier
  • PT payload type
  • the length of the block indicates the instruction of the device and the data length of the specified data of the target device.
  • Finger ⁇ method of the target device "a device serial number”, “date of manufacture eyes”, ⁇ hardware version number j, “device type”, “manufacturer identification number j,” Sofutue ⁇ / / firmware version number " Specify one of The specified data of the target device is
  • a program broadcast identifier and a trailer are set at the end, and the PLOAM cell for starting download ends.
  • the program broadcast identifier sets a unique value for each program that is downloaded.
  • Fig. 4 (B) shows a PLOAM cell for starting download in which the actual value is written in the data block.
  • the block length a1 indicates 5 bytes
  • the target device specification method a2 value 1 The upper 1 digit of 1 1 matches the vendor code (manufacturing identification number) and the lower 1 digit matches.
  • the vendor code “500” is specified in the designated device a3.
  • the length b 1 of the next block indicates 10 bytes, and the designation method of the target device
  • the value 1 of b 2 indicates that the upper 1 digit of the 3 5 indicates the version number and the lower 1 digit indicates the in-range match.
  • the specified data b3 indicates the version number from "0 1 0 1" to "0 1 0 3".
  • the download data creation unit 35 is supplied with the program broadcast identifier, and is supplied with the preset download data, that is, the program data from the download data storage unit 36, and the download data shown in FIG. Data cell Is created and supplied to the transmission / reception unit 37 together with the download data transmission request.
  • the download data creation unit 35 creates down-load data at predetermined time intervals that can be continuously received by the subscriber line termination device in accordance with an instruction from the broadcast interval setting unit 38.
  • the download data cell has a broadcast header at the beginning as shown in Fig. 4 (C).
  • This part is equivalent to a 5-byte ATM header containing VPI ZVCI (virtual path identifier Z virtual channel identifier), and the PT (payload evening) in the ATM header indicates the broadcast.
  • a program broadcast identifier, a fiber flag, and program data are set.
  • the program broadcast identifier is the same value as the value set by the program broadcast identifier of the PLOAM cell for starting the download.
  • the «flag indicates that the value 1 is ⁇ and the value 0 is final. Data constituting the program to be downloaded is sequentially set as program data.
  • the transmission / reception unit 37 transmits / receives ATM cells to / from the subscriber line terminating devices 10 and -1ON.
  • the transmission / reception section 37 transmits the PL0 AM cell for download start to the optical transmission line 14 in response to a transmission request from the download start PL0 AM cell generation section 34, and the download port data generation section 35
  • the download data cell is transmitted to the optical feit path 14 in response to a transmission request from.
  • FIG. 5 shows a flowchart of an embodiment of a process executed by the subscriber line terminal.
  • step S10 one ATM cell is received from the optical transmission line 14.
  • step S12 whether or not the ATM cell has a broadcast header is used to determine whether or not it is broadcast data. If not, the flow proceeds to normal data reception processing. If it is broadcast data, the flow advances to step S14 to determine whether or not a download start command identifier or a program broadcast identifier is present at the head of the information field.
  • the process proceeds to other broadcast data.
  • the download start command identifier is set, since this ATM cell is a PL0 AM cell for starting download, it is currently being downloaded in step S16, that is, receiving the download. It is determined whether or not the program broadcast identifier for this is stored in the reception data distribution unit 22 of its own device. If it is not currently waiting to receive a download, in step S18, the target device specification information, which consists of the block length, the target device action, and the target device specification data, is compared with the If of its own device. Then, it is determined whether or not the own device is the target device.
  • step S20 If the own device is not the target device, the received ATM cell is discarded in step S20, and the process proceeds to step S10. If the own device is the target device, the program broadcast identifier is stored in the received data distribution unit 22 in step S22, and the process proceeds to step S10.
  • step S16 If it is currently waiting for download reception in step S16, the process proceeds to step S24, and since download reception has already been started, the newly received download start PLO AM cell is discarded. And proceed to step S10.
  • step S14 determines whether it is currently in the download receiver in step S26, that is, the program broadcast identifier for It is determined whether or not it is stored in the reception data distribution unit 22. If the download is not currently available, the received ATM cell is discarded in step S28, and the process proceeds to step S10.
  • step S30 the program broadcast identifier of the received ATM cell is compared with the program broadcaster stored in the reception data sorting unit 22 of the own device. It is determined whether or not they match, and if they do not match, the received ATM cell is discarded in step S28, and the flow advances to step S10. If they match, the process proceeds to step S32, where the program data is extracted from the received ATM cell and stored in the download data storage unit 27.
  • step S34 it is determined whether or not the flag indicates that the received ATM cell is a flag. move on. Also, in the final case, in step S36, the program broadcast identifier of the received data sorting unit 22 is erased to cancel the state of waiting for download, and it is notified whether or not the down mode has been normally performed. Therefore, the reception result is notified to the user terminal device or the line termination device connected to the own device, and the process proceeds to step S10.
  • FIG. 6 shows a data flow of the first embodiment of the system to which the present invention is applied.
  • the subscriber line termination device 10 is connected to the manufacturer identification number (the vendor code).
  • W de 500
  • a software / firmware version 0101
  • the network unit 1 Omicron iota 500
  • the subscriber line termination device 10 3 has a manufacturer identification number of 700
  • PLOAM cell SEL 1 having a download start command (assuming, for example, that the manufacturer's identification number is equal to 500 as the target device designation information) is broadcast, and the subscriber line termination device 10 ,, 10 2, 10 3 respectively and the ratio 0 compare the manufacturer identification number of the manufacturer identification number and PLOAM cell SEL1 of JiSo location, subscriber »tip device 10 which matches both force], 10 2 PLOAM cell SE
  • the program broadcast identifiers of L1 are stored, and these are in a reception standby state.
  • FIG. 7 shows a data flow of a second embodiment of the system to which the present invention is applied.
  • the PLOAM cell SELA 1 having the download start command is broadcast, and the PLOAM cells 10> and 10 2 whose target designation information matches the
  • the PL 0 AM cell SEL B 1 having the download start command of the program broadcast identifier B is broadcast before the data cell SELAn is broadcast.
  • the PLOAM cell SEL B 1 is ignored because the subscriber line terminating equipment 1 (, 10 2) is in the middle of the down port of the program broadcast identifier A.
  • network unit 10 3 target designation information is reception standby state to save the own apparatus and one 3 ⁇ 4f order PL_ ⁇ AM cell S ELB 1 program broadcast identifier B.
  • the network unit 103 when downloading data cell S ELB2 the following programs broadcast identifier is PLOAM cell Le SEL 1 same as B is broadcast, captures the downloaded data in the data cell SELB 2 .
  • FIG. 8 shows a data flow of the third embodiment of the system to which the present invention is applied.
  • the PL 0 AM cells SEL 1 a and SEL lb having the download start command are broadcast.
  • the fiber flag is set and the PL0 AM cell SEL1a is set. Ends a, sets the data block that does not fit in the information field of the following PLOAM cell SEL 1 b, and finally sets the program broadcast identifier.
  • PLOAM cell SEL 1 a, SEL 1 b targeting information Subscriber line terminating apparatus matches with the own apparatus 10 !, 10 2 to stored program Doho ⁇ Besshi the PLOAM cell SEL 1 b listens to ⁇ State.
  • FIG. 9 shows a data flow of a fourth embodiment of the system to which the present invention is applied.
  • the PL 0 AM cell S ELC 1 having a download start command is transmitted.
  • Program broadcast! ⁇ Broadcast without setting IJ child.
  • all the network unit 10, 10 2, 10 3 is a reception standby state by a program Doho ⁇ Besshi blank.
  • the target device of the program download is specified by using the attribute information (for example, software / firmware version number) originally stored in the device, and it is possible to determine which subscriber line termination device receives which data. Do not use il ⁇ for complicated operations in advance to specify. Also, by separating the PL0 AM cell that has a download start command with information for identifying the target device and the download data cell for program transmission, the download data cell updates the target model name and other information in the download data cell. Without setting information, data efficiency is improved.
  • the attribute information for example, software / firmware version number
  • each designated subscriber line termination device fetches and stores the independently downloaded program data, downloading of data such as programs is completed in a short time. It can be performed.
  • the download data cell before transmitting the download data cell, set the total amount of blue cells or the number of cells of the download data cell to be transmitted to the PLOA cell to be transmitted in advance, and use it to divide the data into multiple cells.
  • a method of determining the end of the downloaded download data cell may be used.
  • the subscriber line terminating devices 101 to 10 N correspond to the receiving device described in the claims
  • the line terminating device 12 corresponds to the transmitting device
  • the P LOAM cell corresponds to the download start message.
  • the download data cell corresponds to the data message
  • the down-call start PL0 AM cell creation unit 34 corresponds to the first broadcast means
  • the down-call data creation unit 35 corresponds to the second broadcast.
  • the receiving data distribution unit 22 corresponds to the broadcast identifier stage
  • the download data processing unit 26 corresponds to the data acquisition means.

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  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Data Exchanges In Wide-Area Networks (AREA)

Abstract

Un dispositif côté émission émet un télégramme de démarrage de téléchargement contenant une information qui désigne le dispositif objet et un identificateur de diffusion à l'intention de tous les dispositifs côté réception, puis un autre télégramme qui renferme le même identificateur de diffusion que celui contenu dans le premier télégramme et des données à l'intention de tous les dispositifs côté réception. Chaque dispositif côté réception stocke l'identificateur de réception inclus dans le télégramme de démarrage de téléchargement lorsque l'information attribut le concernant est conforme à l'information désignant le dispositif objet contenue dans ce même télégramme, puis saisit les données du télégramme de données lorsque l'identificateur de diffusion contenu dans ledit télégramme coïncide avec l'identificateur de diffusion stocké en lui-même. Ainsi, aucune opération compliquée n'est requise par avance pour désigner le dispositif côté réception appelé à recevoir des données. Comme le télégramme contenant l'information qui désigne un dispositif objet et le télégramme pour la transmission de données sont utilisés séparément, il n'est pas nécessaire d'inclure des informations de mise à jour dans le télégramme de transmission de données, ce qui améliore l'efficacité de la transmission de données. Comme par ailleurs le télégramme contenant des informations permettant de désigner un dispositif objet et le télégramme de transmission de données sont diffusés, le téléchargement de données peut s'effectuer plus rapidement.
PCT/JP1999/005049 1999-09-16 1999-09-16 Procede de telechargement avec emploi d'un dispositif cote emission et d'un dispositif cote reception WO2001020849A1 (fr)

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Application Number Priority Date Filing Date Title
PCT/JP1999/005049 WO2001020849A1 (fr) 1999-09-16 1999-09-16 Procede de telechargement avec emploi d'un dispositif cote emission et d'un dispositif cote reception

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PCT/JP1999/005049 WO2001020849A1 (fr) 1999-09-16 1999-09-16 Procede de telechargement avec emploi d'un dispositif cote emission et d'un dispositif cote reception

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Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2006148412A (ja) * 2004-11-18 2006-06-08 Hitachi Communication Technologies Ltd 伝送システム
JP2007201852A (ja) * 2006-01-27 2007-08-09 Hitachi Communication Technologies Ltd ソフトウェア転送方法
JP2007241780A (ja) * 2006-03-10 2007-09-20 Fujitsu Access Ltd 宅内通信装置のアップグレード方法及び局側通信装置
JP2007282148A (ja) * 2006-04-12 2007-10-25 Fujitsu Access Ltd Ｐｏｎシステム及び自動ダウンロード方法
JP2007334602A (ja) * 2006-06-14 2007-12-27 Brother Ind Ltd アップデートデータ配信システム、そのアップデートデータ配信システムにおける端末装置、アップデートデータ配信装置、接続管理装置及びアップデートデータ配信方法並びにそれに用いるプログラム
JP2013258533A (ja) * 2012-06-12 2013-12-26 Hitachi Ltd 通信システムおよびデータのダウンロード方法

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH10173648A (ja) * 1996-12-13 1998-06-26 Hitachi Ltd 情報の送受信方法及びそれを用いたシステム
JPH10257451A (ja) * 1997-03-07 1998-09-25 Sony Corp データ送信装置、受信装置およびデータ伝送システム、ならびにデータ伝送方法

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH10173648A (ja) * 1996-12-13 1998-06-26 Hitachi Ltd 情報の送受信方法及びそれを用いたシステム
JPH10257451A (ja) * 1997-03-07 1998-09-25 Sony Corp データ送信装置、受信装置およびデータ伝送システム、ならびにデータ伝送方法

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2006148412A (ja) * 2004-11-18 2006-06-08 Hitachi Communication Technologies Ltd 伝送システム
JP2007201852A (ja) * 2006-01-27 2007-08-09 Hitachi Communication Technologies Ltd ソフトウェア転送方法
JP4709020B2 (ja) * 2006-01-27 2011-06-22 株式会社日立製作所 ソフトウェア転送方法
JP2007241780A (ja) * 2006-03-10 2007-09-20 Fujitsu Access Ltd 宅内通信装置のアップグレード方法及び局側通信装置
JP2007282148A (ja) * 2006-04-12 2007-10-25 Fujitsu Access Ltd Ｐｏｎシステム及び自動ダウンロード方法
JP2007334602A (ja) * 2006-06-14 2007-12-27 Brother Ind Ltd アップデートデータ配信システム、そのアップデートデータ配信システムにおける端末装置、アップデートデータ配信装置、接続管理装置及びアップデートデータ配信方法並びにそれに用いるプログラム
JP2013258533A (ja) * 2012-06-12 2013-12-26 Hitachi Ltd 通信システムおよびデータのダウンロード方法

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