US20010042113A1 - Method of distributing data packets of system software - Google Patents

Method of distributing data packets of system software Download PDF

Info

Publication number
US20010042113A1
US20010042113A1 US09159155 US15915598A US2001042113A1 US 20010042113 A1 US20010042113 A1 US 20010042113A1 US 09159155 US09159155 US 09159155 US 15915598 A US15915598 A US 15915598A US 2001042113 A1 US2001042113 A1 US 2001042113A1
Authority
US
Grant status
Application
Patent type
Prior art keywords
system
set
top
version
software
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
US09159155
Other versions
US6836793B1 (en )
Inventor
Bozo Cesar
Klaus Keil
Joachim Riemer
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Alcatel SA
Original Assignee
Alcatel SA
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

Links

Images

Classifications

    • GPHYSICS
    • G06COMPUTING; CALCULATING; COUNTING
    • G06FELECTRIC DIGITAL DATA PROCESSING
    • G06F8/00Arrangements for software engineering
    • G06F8/60Software deployment
    • G06F8/65Updates

Abstract

In a point-to-multipoint system (SYS), particularly a video-on-demand system, comprising a send unit (SERVER) in the form of a server and a plurality of receive units (DEC) in the form of decoders, a new version of the system software for the decoders is to be transferred to the latter. This is done by taking the following steps:
1. An announce signal containing the information that the new system software or part thereof will subsequently be transferred is transmitted from the server to all decoders simultaneously.
2. The system software or part thereof is transferred in the form of data packets from the server to all decoders simultaneously.
By the advance information in the form of an announce signal which is transmitted to all decoders by the broadcast method, the decoders are notified of the forthcoming transmission of the current version of the system software, whereupon they can prepare for the reception of the new version. The new version is also transmitted by the broadcast method, and ideally only once.

Description

  • [0001]
    This invention relates to a method of distributing data packets of system software as set forth in the preamble of claim 1.
  • [0002]
    In a point-to-multipoint system, particularly a service-on-demand system, a server is provided as a send unit, and the receive units are decoders. The decoders are designed as set-top boxes. The system software of the set-top boxes needs to be updated when a new version of the system software is available.
  • [0003]
    From an article by Carl W. Symborski, “Updating Software And Configuration Data In A Distributed Communications Network”, Proceedings of the Computer Networking Symposium, IEEE Comput. Soc. Press, 1988, pages 331-338, a procedure for distributing data packets of system software in a point-to-multipoint system is known. The procedure is executed in a receive unit and consists of the following steps:
  • [0004]
    1. Wait until a predetermined period of time has expired or a notice has been received that a new version of the system software may be available.
  • [0005]
    2. Request information from the server as to whether a new version is available.
  • [0006]
    3. Compare the version communicated by the server with the version available in the receive unit.
  • [0007]
    4. If no change is detected, return to step 1.
  • [0008]
    5. If a change is detected, request the new version from the server.
  • [0009]
    6. Replace the old version with the new one.
  • [0010]
    7. Store the new version.
  • [0011]
    8. Return to step 1.
  • [0012]
    Thus, to obtain the new version of the system software, this procedure always requires an action by the receive unit together with a request to the server. If a plurality of receive units are present, each receive unit must request the new version by itself. Because of the structure of the distribution system, the new version, which is generally identical for all receive units, is transmitted from the send unit to the receive units separately. If there are 500 receive units, the send unit must transmit the new version 500 times, once to each receive unit. This takes a certain time. Thus, the transmission of further information is unnecessarily blocked, at least in a predetermined frequency range, for a certain period of time.
  • [0013]
    From an article by K. Rath and J. W. Wendorf, “Set-Top Box Control Software: a Key Component in Digital Video”, Philips Journal of Research (1996), Vol. 50, No. 1/2, pages 185-199, a method of distributing data packets of system software in a point-to-multipoint system is known in which a receive unit designed as a set-top box obtains a new version of the system software telemetrically via a network. The set-top box sends a request to the server or obtains the new version from the server automatically on a periodic basis. The former corresponds essentially to the procedure described above. The latter involves the establishment of a connection between the server and an individual set-top box, which eliminates the need for the set-top box to actively request a new version but does not prevent the multiple transmission of the same information.
  • [0014]
    It is therefore an object of the invention to provide a method whereby the system software can be updated in a simple manner.
  • [0015]
    According to the invention, this object is attained by a method as set forth in claim 1. The method is characterized in that by advance information in the form of an announce signal which is transmitted to all receive units by the broadcast method, the receive units are notified of the forthcoming transmission of the current version of the system software, whereupon they can prepare for the reception of the new version. The new version is also transmitted by the broadcast method, and ideally only once. If individual receive units should not have received the advance information, the method may, for example, be automatically repeated at a later time or the remaining receive units may request the new version from the server separately. Thus, compared with the prior art, the transmission time is ideally shortened by a factor corresponding to the number of receive units present, i.e., by a factor 500 if there are 500 receive units. If, for example, 10% of the receive units should not have received the advance information, the transmission time is still shortened by a factor of 250 (in case of automatic repetition) or approximately 100 (if separate requests are made).
  • [0016]
    Further advantageous features of the invention are defined in the dependent claims.
  • [0017]
    The invention will become more apparent from the following description of an embodiment when taken in conjunction with the accompanying drawing. The single figure of the drawing is a schematic representation of a point-to-multipoint system according to the invention for carrying out the method according to the invention.
  • [0018]
    The point-to-multipoint SYS comprises a send unit SERVER, a network NET, and a plurality of receive units DEC.
  • [0019]
    The point-to-multipoint system SYS is designed, for example, as a service-on-demand system. The send unit SERVER contains a server which is connected via the network NET to the receive units DEC, which are designed as decoders. The point-to-multipoint system SYS makes available a downstream channel and an upstream channel. Via the upstream channel, e.g., a narrow-band channel, customers can transmit information from their decoders through the network NET to the server. The information consists, for example, of request signals by means of which a video film, for example, is requested, which is then broadcast over the downstream channel, e.g., a broadband channel, to all decoders or to a group of decoders in a subarea dependent on the topology of the network. A logon authorization, granted, for example, by issuing a key for each transmission, ensures that only the decoder from which the video film was requested has the right and capability to receive the transmitted video film.
  • [0020]
    The decoders are designed, for example, as set-top boxes. Each set-top box has system software, i.e., programs that make up the operating system. The system software serves, for example, to receive and process the menu broadcast by the server for the selection of video films and the like. From time to time, the system software is upgraded and updated, or modified to eliminate systematic errors. Each set-top box then needs an update of its system software. A new version of the system software needs to be transferred to the set-top box. This is done by downloading the new version from the server to the set-top boxes. The new version or, if possible, only the changes in the new version from the old one are transmitted in the form of data packets from the server to the set-top boxes through the network NET. As a rule, the system software is the same for all set-top boxes, so that ideally, one download will suffice to transmit the necessary data packets of the new version to all set-top boxes.
  • [0021]
    The method of distributing the data packets of the system software is carried out in the following steps, which are taken one after the other:
  • [0022]
    1. From the send unit SERVER, which contains the server, an announce signal containing the information that the system software of the set-top boxes or part of this software will subsequently be transmitted is sent to all receive units DEC, which contain the set-top boxes, simultaneously.
  • [0023]
    2. From the send unit SERVER, the system software or part thereof is sent in the form of data packets to all receive units DEC simultaneously.
  • [0024]
    Thus, by the first step, all set-top boxes connected to the network NET are informed that the new version or the changes from the old version will be transmitted by the server shortly. Each set-top box thus has sufficient time to prepare for the reception of the new software. For example, the set-top box may go through a initialization phase in which various checks are made and a buffer storage area is enabled to buffer and subsequently load the system software. The announce signal is received by all set-top boxes, since instead of an address in the header of a data packet, which serves to select a given set-top box, a so-called default address, e.g., XXXXXXXX, is used, which can be received by all set-top boxes.
  • [0025]
    In the second step, the data packets of the new system software are transmitted from the server to all set-top boxes by the broadcast method. This is also done using the default address. All set-top boxes can receive the transmitted data packets. A single transmission of the data packets thus suffices to transfer the new version of the system software to all set-top boxes prepared by the announce signal. Thus, in ideal circumstances, the system software of all set-top boxes is updated by a single transfer of the new system software.
  • [0026]
    The announce signal may contain information as to which version of the system software will be transmitted and how much storage capacity is needed. This enables the set-top boxes to determine in advance whether the data packets shortly to be transmitted are to be received or not. If, for example, a set-top box has already received the new version of the system software, e.g., in response to a previous request, via a PCMCIA card, or otherwise, the reception of the new version and the preparation therefor would be unnecessary. The information on the storage capacity required enables the set-top box to check whether sufficient storage space is available for receiving the latest version and, if so, to reserve a corresponding area of the new version.
  • [0027]
    Between steps 1 and 2 of the method for distributing the data packets of the new system software, the receive units DEC, i.e., the set-top boxes, can buffer the version of this system software, compare it with the version available in the respective set-top box, and, if the two versions are identical, prevent the reception of the data packets transmitted in step 2.
  • [0028]
    The receive units DEC, i.e., the set-top boxes, then acknowledge the receipt of the last data packet transmitted by the send unit SERVER and belonging to the system software. This has the advantage that the transmission of the data packets is not interfered with by the acknowledgements from the set-top boxes. A repetition of the transmission of individual data packets for individual set-top boxes is not provided for, since this would introduce delays. If a set-top box does not receive individual data packets for some reason or other, it must wait for another transfer of a complete version if this is provided for, or request the new version from the server, which will then send a complete version to the respective set-top box separately.
  • [0029]
    The acknowledge signals from the set-top boxes contain information for identifying the set-top boxes, e.g., the address of the respective set-top box. The server can thus determine which of the set-top boxes have received the transmitted data packets and which have not. To this end, the server stores in a list, for example, the addresses of those set-top boxes which have acknowledged receipt of the data packets. This may be accomplished, for example, by storing the addresses directly in a separate memory area or by providing the respective addresses of the set-top boxes with an identifier if all of them have already been stored in a list. By comparing the received acknowledgements with the number of set-top boxes available, the server can determine to how many set-top boxes the new version has been successfully transmitted. From this, a success ratio can be determined, e.g., 80%. Based on this ratio, the server can decide whether or not to repeat the transmission with the preceding announce signal at a later time. Furthermore, the address information can be used to determine whether transmission errors are present in locally limited areas, e.g., if no acknowledgement is received from those set-top boxes which are connected to a subarea dependent on the topology of the network.

Claims (7)

  1. 1. A method of distributing data packets of system software in a point-to-multipoint system (SYS) from a send unit (SERVER) to a plurality of receive units (DEC),
    characterized in
    that the following steps are taken one after the other:
    1. An announce signal containing the information that the system software or part thereof will subsequently be transmitted is transmitted from the send unit (SERVER) to all receive units (DEC) simultaneously.
    2. The system software or part thereof is transmitted in the form of data packets from the send unit (SERVER) to all receive units (DEC) simultaneously.
  2. 2. A method as claimed in
    claim 1
    , characterized in that the announce signal contains information as to which version of the system software will be transmitted.
  3. 3. A method as claimed in
    claim 2
    , characterized in that between steps 1 and 2, the receive units (DEC) buffer the version of the system software identified in the announce signal, compare said version with the version available in the respective receive unit (DEC), and, if the two versions are identical, inhibit the reception of the data packets transmitted in step 2.
  4. 4. A method as claimed in any one of the preceding claims, characterized in that the receive units (DEC) acknowledge only the receipt of the last data packet transmitted by the send unit (SERVER) and belonging to the system software or part thereof.
  5. 5. A method as claimed in
    claim 4
    , characterized in that the acknowledge signals from the receive units (DEC) contain information identifying the receive units (DEC), and that the send unit (SERVER) stores in a list information identifying those receive units (DEC) which have acknowledged the receipt of the data packets, in order to record which receive unit (DEC) has received the transmitted data packets and which has not.
  6. 6. A method as claimed in any one of the preceding claims, characterized in that the point-to-multipoint system is a service-on-demand system comprising a server as the send unit (SERVER) and decoders as the receive unit (DEC).
  7. 7. A method as claimed in
    claim 6
    , characterized in that the decoders are designed as set-top boxes, and that the transmitted data packets serve to update the system software of the set-top boxes.
US09159155 1997-09-23 1998-09-23 Method of distributing data packets of system software where the receiving units acknowledge only proper reception Expired - Fee Related US6836793B1 (en)

Priority Applications (3)

Application Number Priority Date Filing Date Title
DE1997141870 DE19741870A1 (en) 1997-09-23 1997-09-23 A method of distributing data packets of system software
DE19741870 1997-09-23
DE19741870.8 1997-09-23

Publications (2)

Publication Number Publication Date
US20010042113A1 true true US20010042113A1 (en) 2001-11-15
US6836793B1 US6836793B1 (en) 2004-12-28

Family

ID=7843288

Family Applications (1)

Application Number Title Priority Date Filing Date
US09159155 Expired - Fee Related US6836793B1 (en) 1997-09-23 1998-09-23 Method of distributing data packets of system software where the receiving units acknowledge only proper reception

Country Status (7)

Country Link
US (1) US6836793B1 (en)
EP (1) EP0903666B1 (en)
JP (2) JPH11163943A (en)
CN (1) CN1186902C (en)
CA (1) CA2245384A1 (en)
DE (1) DE19741870A1 (en)
ES (1) ES2237830T3 (en)

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20040174319A1 (en) * 2003-01-21 2004-09-09 Mitsubishi Denki Kabushiki Kaisha Information transmission apparatus and information transmission method
WO2007050067A1 (en) * 2005-10-26 2007-05-03 Thomson Licensing A system and method for advertising the availability of a software upgrade
US20070106777A1 (en) * 2005-11-04 2007-05-10 Internet Initiative Japan Inc. Automatic functionality generating mechanism for network connecting appliances
US20070195770A1 (en) * 2006-02-20 2007-08-23 Fujitsu Limited Network controller, receiving terminal device, content delivery system, network control method, and content receiving method
US20070288985A1 (en) * 2006-06-13 2007-12-13 Candelore Brant L Method and system for uploading content to a target device
US20100058403A1 (en) * 2008-08-29 2010-03-04 Vaidyanathan Ramaswami Distributing On-Demand Multimedia Content

Families Citing this family (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20020014799A (en) * 1999-05-20 2002-02-25 추후제출 Broadcast download technique
DE10050546B4 (en) * 2000-10-12 2008-07-24 Rohde & Schwarz Gmbh & Co. Kg Measuring method for distributing a firmware program code on multiple measuring devices
US20030135575A1 (en) * 2002-01-14 2003-07-17 Richard Marejka Self-monitoring and trending service system with cascaded pipeline linking numerous client systems
US7376713B2 (en) * 2002-06-27 2008-05-20 International Business Machines Corporation Apparatus, system and method of distributing block data on a private network without using TCP/IP
US7673297B1 (en) * 2003-09-03 2010-03-02 The Directv Group, Inc. Automatic software update detection and flexible installer for set-top boxes
US7500235B2 (en) * 2003-09-05 2009-03-03 Aol Time Warner Interactive Video Group, Inc. Technique for updating a resident application and associated parameters in a user terminal through a communications network
US7099753B2 (en) * 2004-04-27 2006-08-29 The Boeing Company Automatic generation of telemetry flight software, accompanying specifications, and decode files
US8424041B2 (en) * 2005-09-07 2013-04-16 Sony Corporation Method and system for downloading content to a content downloader
US20070288986A1 (en) * 2006-06-13 2007-12-13 Candelore Brant L Method and system for downloading content to a target device

Family Cites Families (19)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4654654A (en) * 1983-02-07 1987-03-31 At&T Bell Laboratories Data network acknowledgement arrangement
DE3842289C2 (en) 1987-12-18 1997-12-18 Hitachi Ltd Procedures for developing programs for a distributed data processing system
JPH04175952A (en) * 1990-11-09 1992-06-23 Hitachi Ltd Software resource distribution control system
JPH05145548A (en) * 1991-11-19 1993-06-11 Hitachi Inf & Control Syst Inc Down-load control system for information communication network system
US5421009A (en) * 1993-12-22 1995-05-30 Hewlett-Packard Company Method of remotely installing software directly from a central computer
DE4408544C2 (en) * 1994-03-14 1997-06-19 Siemens Nixdorf Inf Syst automatic installation
US5666293A (en) * 1994-05-27 1997-09-09 Bell Atlantic Network Services, Inc. Downloading operating system software through a broadcast channel
US5768539A (en) * 1994-05-27 1998-06-16 Bell Atlantic Network Services, Inc. Downloading applications software through a broadcast channel
DE4429969A1 (en) 1994-08-24 1996-02-29 Sel Alcatel Ag A process for a program package change in a multi-computer system and the computer for
DE4438698A1 (en) * 1994-10-29 1996-05-02 Sel Alcatel Ag Method of loading multi-computer systems
DE4438697A1 (en) * 1994-10-29 1996-05-02 Sel Alcatel Ag Method for loading multi-computer systems
US6128648A (en) * 1994-11-23 2000-10-03 International Business Machines Corporation Information handling system and method for maintaining coherency between network servers and mobile terminals
GB9425429D0 (en) * 1994-12-16 1995-02-15 Ibm Data conferencing network
US5553083B1 (en) * 1995-01-19 2000-05-16 Starburst Comm Corp Method for quickly and reliably transmitting frames of data over communications links
JPH08241206A (en) * 1995-03-07 1996-09-17 Mitsubishi Electric Corp Data communication processing method
US5671225A (en) * 1995-09-01 1997-09-23 Digital Equipment Corporation Distributed interactive multimedia service system
JP3326672B2 (en) * 1995-09-26 2002-09-24 日本電信電話株式会社 Message retransmission method and system
GB2311389B (en) * 1996-03-18 2000-06-07 Ibm Software installation in data processing network
US5848064A (en) * 1996-08-07 1998-12-08 Telxon Corporation Wireless software upgrades with version control

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20040174319A1 (en) * 2003-01-21 2004-09-09 Mitsubishi Denki Kabushiki Kaisha Information transmission apparatus and information transmission method
US7636773B2 (en) * 2003-01-21 2009-12-22 Mitsubishi Denki Kabushiki Kaisha Information transmission apparatus and information transmission method
WO2007050067A1 (en) * 2005-10-26 2007-05-03 Thomson Licensing A system and method for advertising the availability of a software upgrade
US20070106777A1 (en) * 2005-11-04 2007-05-10 Internet Initiative Japan Inc. Automatic functionality generating mechanism for network connecting appliances
US7660266B2 (en) * 2005-11-04 2010-02-09 Internet Initiative Japan, Inc. Automatic functionality generating mechanism for network connecting appliances
US20070195770A1 (en) * 2006-02-20 2007-08-23 Fujitsu Limited Network controller, receiving terminal device, content delivery system, network control method, and content receiving method
US20070288985A1 (en) * 2006-06-13 2007-12-13 Candelore Brant L Method and system for uploading content to a target device
US20100058403A1 (en) * 2008-08-29 2010-03-04 Vaidyanathan Ramaswami Distributing On-Demand Multimedia Content
US8589993B2 (en) 2008-08-29 2013-11-19 At&T Intellectual Property I, L.P. Distributing on-demand multimedia content

Also Published As

Publication number Publication date Type
EP0903666B1 (en) 2005-04-20 grant
JPH11163943A (en) 1999-06-18 application
JP2009104603A (en) 2009-05-14 application
CN1186902C (en) 2005-01-26 grant
ES2237830T3 (en) 2005-08-01 grant
EP0903666A1 (en) 1999-03-24 application
CA2245384A1 (en) 1999-03-23 application
US6836793B1 (en) 2004-12-28 grant
DE19741870A1 (en) 1999-03-25 application
CN1212541A (en) 1999-03-31 application

Similar Documents

Publication Publication Date Title
US6170006B1 (en) Video on demand service system for performing automatic expanding processing of data and title information
US5526492A (en) System having arbitrary master computer for selecting server and switching server to another server when selected processor malfunctions based upon priority order in connection request
US5227778A (en) Service name to network address translation in communications network
US6366964B1 (en) Method of and apparatus for dynamically enumerating objects representing devices within an IEEE 1394 serial bus networking
US6961560B2 (en) Method and device for prompt and efficient service discovery in wireless networks
US7054910B1 (en) Data replication facility for distributed computing environments
US6308207B1 (en) Distributed service subsystem architecture for distributed network management
US8281349B2 (en) Data providing system
US6775244B1 (en) Gathering of device discovery information
US5970488A (en) Real-time distributed database system and method
US6981034B2 (en) Decentralized management architecture for a modular communication system
US7176808B1 (en) System and method for updating a network of remote sensors
US6405239B1 (en) Using a hierarchical file system for indexing data broadcast to a client from a network of servers
US6697859B1 (en) Apparatus, method, program, and information processing system for prioritized data transfer to a network terminal
US6134599A (en) System and method for organizing devices in a network into a tree using suitability values
US7062555B1 (en) System and method for automatic selection of service provider for efficient use of bandwidth and resources in a peer-to-peer network environment
US5331635A (en) Network system having function of updating routing information
US20020154655A1 (en) System and method for combining requests for data bandwidth by a data provider for transmission of data over an asynchronous communication medium
US5347272A (en) System for determining communication routes in a network
US6237146B1 (en) System and method of bidirectional digital video communication over a cable
US5978839A (en) Data sharing method in a plurality of computer systems
US20020072355A1 (en) Method for distributing application software in mobile communication system
US5500852A (en) Method and apparatus for network variable aliasing
US20030041336A1 (en) Selective downloading of specific code images to broadband terminals
US6442596B1 (en) Shared data views for large-scale multimode environments

Legal Events

Date Code Title Description
AS Assignment

Owner name: ALCATEL, FRANCE

Free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNORS:CESAR, BOZO;KEIL, KLAUS;RIEMER, JOACHIM;REEL/FRAME:009562/0108

Effective date: 19981008

CC Certificate of correction
FPAY Fee payment

Year of fee payment: 4

FPAY Fee payment

Year of fee payment: 8

AS Assignment

Owner name: CREDIT SUISSE AG, NEW YORK

Free format text: SECURITY AGREEMENT;ASSIGNOR:LUCENT, ALCATEL;REEL/FRAME:029821/0001

Effective date: 20130130

Owner name: CREDIT SUISSE AG, NEW YORK

Free format text: SECURITY AGREEMENT;ASSIGNOR:ALCATEL LUCENT;REEL/FRAME:029821/0001

Effective date: 20130130

AS Assignment

Owner name: ALCATEL LUCENT, FRANCE

Free format text: RELEASE BY SECURED PARTY;ASSIGNOR:CREDIT SUISSE AG;REEL/FRAME:033868/0001

Effective date: 20140819

REMI Maintenance fee reminder mailed
LAPS Lapse for failure to pay maintenance fees
FP Expired due to failure to pay maintenance fee

Effective date: 20161228