WO2010043373A1 - Procédé de fourniture d'informations d'indication d'erreur au niveau d'un dispositif d'extrémité - Google Patents

Procédé de fourniture d'informations d'indication d'erreur au niveau d'un dispositif d'extrémité Download PDF

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Publication number
WO2010043373A1
WO2010043373A1 PCT/EP2009/007343 EP2009007343W WO2010043373A1 WO 2010043373 A1 WO2010043373 A1 WO 2010043373A1 EP 2009007343 W EP2009007343 W EP 2009007343W WO 2010043373 A1 WO2010043373 A1 WO 2010043373A1
Authority
WO
WIPO (PCT)
Prior art keywords
error
data flow
hgw
end device
media data
Prior art date
Application number
PCT/EP2009/007343
Other languages
English (en)
Inventor
Oleg Neuwirt
Original Assignee
Nec Europe Ltd.
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 Nec Europe Ltd. filed Critical Nec Europe Ltd.
Publication of WO2010043373A1 publication Critical patent/WO2010043373A1/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
    • H04L12/28—Data switching networks characterised by path configuration, e.g. LAN [Local Area Networks] or WAN [Wide Area Networks]
    • H04L12/2803—Home automation networks
    • H04L12/283—Processing of data at an internetworking point of a home automation network
    • H04L12/2834—Switching of information between an external network and a home network
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L43/00—Arrangements for monitoring or testing data switching networks
    • H04L43/08—Monitoring or testing based on specific metrics, e.g. QoS, energy consumption or environmental parameters
    • H04L43/0805—Monitoring or testing based on specific metrics, e.g. QoS, energy consumption or environmental parameters by checking availability
    • H04L43/0817—Monitoring or testing based on specific metrics, e.g. QoS, energy consumption or environmental parameters by checking availability by checking functioning
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L12/00—Data switching networks
    • H04L12/28—Data switching networks characterised by path configuration, e.g. LAN [Local Area Networks] or WAN [Wide Area Networks]
    • H04L12/2803—Home automation networks
    • H04L12/2838—Distribution of signals within a home automation network, e.g. involving splitting/multiplexing signals to/from different paths
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L65/00—Network arrangements, protocols or services for supporting real-time applications in data packet communication
    • H04L65/60—Network streaming of media packets
    • H04L65/61—Network streaming of media packets for supporting one-way streaming services, e.g. Internet radio
    • H04L65/611—Network streaming of media packets for supporting one-way streaming services, e.g. Internet radio for multicast or broadcast

Definitions

  • the present invention relates to a method for providing error indication information at an end device, said end device being connected to a customer premises network (CPN) and being capable in receiving and handling data flows from said CPN, wherein - during normal operation - said CPN is connected to an operator network via a home gateway (HGW), and wherein - during normal operation - a media data flow is received by said end device, said media data flow being transmitted on a communication path spanning at least parts of said operator network, said HGW and at least parts of said CPN.
  • CPN customer premises network
  • HGW home gateway
  • the end device is connected to a customer premises network (CPN).
  • the CPN is generally a network within the user's home, a company, an area or a city, or the like.
  • the CPN might have various topologies and may include different wireless and cable based network technologies, like W- LAN (Wireless Local Area Network), UMTS (Universal Mobile Telecommunication System), WiMAX (Worldwide interoperability for Microwave Access), Ethernet, or power line communication.
  • W- LAN Wireless Local Area Network
  • UMTS Universal Mobile Telecommunication System
  • WiMAX Worldwide interoperability for Microwave Access
  • Ethernet or power line communication.
  • the CPN is connected to an operator network, via a Home Gateway (HGW).
  • HGW Home Gateway
  • the operator network provides access to the Internet and/or remote services provided by a service provider.
  • the link to the operator network is generally established by a DSL (Digital Subscriber Line), cable TV connection, or fibre optics.
  • the HGW routes data packets between the operator network and the end device for which the data packets are destined.
  • the HGW is generally transparent for the transmitted data packets.
  • a communication session between the end device within the CPN and a remote server which can be accessed via the operator network is established.
  • a media data flow is generated by the server and is transmitted on a communication path to the end device.
  • the communication path covers at least parts of the operator network, the HGW and at least parts of the CPN.
  • the media data flow is received and handled by the end device. For instance, at an IPTV environment, the media data flow contains video data which are displayed on a video screen connected to or being part of the end device.
  • a network operator of the operator network can provide help using special, network immanent detection mechanisms. These detection mechanisms work well as long as the operator has full control on the communication path to the end device. Problems arise, when the end device is connected to the operator network via a CPN and a HGW. Generally, the CPN is not under control of the operator of the operator network. Problems on the communication path may result from problems within the CPN and cannot be detected by the network operator.
  • the aforementioned object is accomplished by a method comprising the features of claim 1.
  • a method comprising the features of claim 1.
  • such a method is characterized by the steps of determining a status indicator representative of the status of communication on said communication path, determining the presence of an error case based on said status indicator, replacing said media data flow with an error data flow by said HGW, said error data flow containing error indication information based on the determined error case, and directing said error data flow to said end device.
  • the error indication information is not generated at the end device but at a central device within the CPN.
  • the HGW is such a central device which may be used for generation of error indication information.
  • the HGW generates an error data flow which contains error indication information and which is transmitted to the end device.
  • a status indicator representative of the status of communication on the communication path is determined.
  • This status indicator might be each different kind of information which is capable in representing a status. It might be an error code, a piece of text, a protocol message, or the like.
  • the HGW replaces the media data flow, which should - A -
  • the end device may display the error indication information transmitted with the error data flow on a display of the end device.
  • the error indication information might be represented in different ways.
  • One possibility is a text message which is displayed at the end device. This offers the benefit of low amount of data which has to be transmitted.
  • Another possibility comprises an audio representation of the error indication information.
  • This audio representation might by output at the sound system of the end device.
  • This kind of error representation might be suitable in cases where the end device is a sound system which plays an internet radio program.
  • the error indication information is represented as audiovisual content in the error data flow. This content may be displayed on a video screen which is part of the end device or which is connected to the end device and may be output to the user by the sound system of the end device.
  • the audiovisual content might be a video, animated content with text displayed like a ticker, or the like.
  • the error data flow is generated based on an error message.
  • the error messages are stored in a non-volatile memory.
  • the non-volatile memory may be contained in the HGW.
  • the non-volatile memory is preferably implemented by a flash-ROM or another low-cost memory device.
  • the non-volatile memory may also be formed by a hard disc. It may even be formed by a RAM (Random Access Memory) which is buffered by an associated power supply like a battery. The used memory device should keep information even if external power supply is disconnected.
  • the error messages may be updated or customized using remote configuration means.
  • the possible errors might change as well.
  • New error messages may be transmitted to the HGW during normal operation of the system and may be stored in the non-volatile memory.
  • new error messages which for instance indicate maintenance works, may be determined and may be transmitted to the end device.
  • This error message may also include information about the kind of maintenance and the duration of the shutdown of the network entities under maintenance.
  • the remote configuration means may be controlled by an operator of the operator network. However, the remote configuration means may also be used by an administrator of the CPN to provide error information about failures within the CPN. This might include maintenance works within the CPN or cases, where only a restricted bandwidth is available for the end device.
  • One error case may be determined in cases of an unavailable network connection to the operator network. This may be an unavailable DSL signal or a disturbed connection on the DSL. It may also result from a router breakdown in the operator network. An inaccessible communication partner within the operator network may also cause an error case. This may for instance be the case, if a server streaming content via the media data flow is inaccessible, shutdown, or has to handle too many connections.
  • Another error cases may comprise insufficient QoS provided on the communication path or on parts of the communication path. Constraints may be located in the operator network or in the CPN. This kind of error case might comprise a congested operator network or a congested CPN.
  • a congested CPN may result from another end device occupying a high bandwidth at the CPN.
  • Another error case may be determined, when problems with the end device occur. This may result from a wrongly configured network interface or from a low quality of an access link to the end device (e.g. due to low signal quality of the W-LAN connecting the end device to the CPN).
  • an error case may be reported back to the operator network. This may be performed by transmitting an error reporting message to the operator network.
  • the error reporting message may help the network operator to discover and solve problems at communication with a certain CPN or certain end devices.
  • the HGW is provided by the network operator for providing their services. In such cases, the network operator can trust the HGW and can also trust the messages which are transmitted by the HGW.
  • the error reporting messages may also be transmitted on a secure channel.
  • the error reporting messages are used at the operator network for triggering error handling mechanisms.
  • Some errors might be solved automatically using standard error handling mechanisms. For instance, in cases of an inaccessible media server, the request of end device might be directed to another media server providing the same content.
  • error handling mechanisms may comprise reducing quality of the media data flow and transmitting contents on a reduced resolution as long as constraints exist.
  • the error reporting messages may be transmitted to the operator network as soon as the connection is available again. It is also possible that only in certain error cases error reporting messages are generated and transmitted. In cases of a breakdown of a router within the operator network, a error reporting message rather burdens the operator network than offering any benefit, as the error is generally already known to the network operator.
  • signalling messages and/or signalling sequences which are transmitted on the communication path may be monitored and evaluated. Also the media data flow may be monitored in order to determine an error case. If for instance many interruptions in the media data flow are detected or if many data packets has to be discarded due to bit errors, communication on the communication path just offers poor quality. Instead of displaying a media data flow with poor quality, it might be beneficial for the user experience to direct an error data flow to the end device which informs about the kind of error case.
  • the status of single network entities which are involved in communication on the communication path may be queried or monitored. This may provide information about the kind of error or may indicate ways how the error could be solved. This may include sending a querying message to a DSL modem for getting information about the status of DSL. Such kind of querying messages may be send periodically or if an error case is detected. In this way, information about the reason of the failure might be collected and may be used for generating the error message.
  • the error data flow may replace the media data flow completely. However, it is also possible that the content of the media data flow is included in the error data flow. This may be used if a interrupted media data flow is available or if the media data flow was reduced in its quality. The error data flow may then contain the media data and display additional information about the reason of the reduced quality.
  • the media data flow may be decrypted by the HGW.
  • the HGW is a trusted device
  • the operator network may reply to queries of the HGW for transmitting the key(s) used at the media data flow and may sent the key(s) to the HGW.
  • the HGW can also monitor signalling messages, signalling sequences and/or the media data flow for encrypted data flows.
  • the key(s) may be used to encrypt the error data flow transmitted to the end device. No new session has to be established between the end device and the HGW, but the HGW "hijacks" the data flow and replaces the media data flow by the error data flow. As the HGW is a trusted device, this kind of session snooping does not compromise security of the system.
  • the method may also be used for transmitting warning messages.
  • the HGW may be triggered to transmit an error data flow which contains the content of the media data flow as well as additional error indication information.
  • the error indication information is replaced by the warning message.
  • This warning message may be displayed as a ticker which may be displayed at the bottom of the picture.
  • the step of determining the status indicator and the step of determining the presence of an error case are performed by the HGW.
  • the HGW may also control other network entities in order retrieve information about the status of the communication on the communication path.
  • the method concerning the invention is used in connection with IPTV (Internet Protocol Television).
  • IPTV Internet Protocol Television
  • the method concerning the invention is independent to the signalling used between the end device and its respective communication partner, e.g. a media streaming server.
  • signalling protocols comprise multicast IGMP (Internet Group Management Protocol), SIP (Session Initiation Protocol) or RTSP (Real Time Streaming Protocol).
  • IGMP Internet Group Management Protocol
  • SIP Session Initiation Protocol
  • RTSP Real Time Streaming Protocol
  • error messages of the session initiation signalling may be used.
  • the session protocol may be extended. This allows transmitting special error indication information to the HGW in different error cases.
  • the method concerning the invention is independent to the used network technology.
  • CPN or HGW is commonly used in connection with TISPAN, the present invention should not be regarded as being limited to the usage of certain network technologies, topologies or protocols. Each technology which supports the method concerning the invention may be used.
  • Fig. is a schematic view of an example of an application scenario of a method according to the present invention.
  • FIG. shows a schematic view of an example of an application scenario of a method according to the invention.
  • a Costumer Premises Network which is symbolized by the left dashed box comprises a home gateway (HGW) which is connected to several end devices.
  • HGW home gateway
  • the Fig. shows three end devices which can be connected to the HGW in different ways.
  • One possibility might be a connection via W-LAN or other wireless techniques.
  • the connection between end device and HGW may also be cable based, like at Ethernet.
  • the HGW is connected to an operator network via DSL.
  • the DSL and the operator network provide connection to the internet and/or remote services.
  • the HGW comprises a flash-ROM which stores error messages for use at generating error indication information.
  • This flash-ROM can be programmed, updated, or customized using remote configuration means.
  • the HGW continuously monitors the quality of connection to the operator network using different means. For this reason, the HGW monitors the media data flow which is - in normal operation - transmitted from the operator network via the HGW to end device 1. From this information, the HGW determines a status indicator which is representative of the status of the communication on the communication path. Using this status indicator, the HGW determines the presence of an error case. If an error case is determined, the HGW replaces the media data flow which may be still transmitted to the end device 1 in poor quality with an error data flow. This error data flow is generated by the HGW based on error messages stored in the flash-ROM on the HGW.
  • end device 1 can display an audiovisual message to its user which indicates the presence of an error case.
  • This error indication information may contain details like certain suggestions for error recovery or - if the error results from problems within the operator network - how long the failure is expected to continue.
  • high quality error indication information can be provided to the user without reducing interoperability of single end devices.
  • the end device does not have do provide its own error indication mechanisms, but only have do provide capability to display a media data flow. In error cases, the end device does not have to detect the error and does not have to provide certain error indication mechanisms.
  • the error indication information is generated by the HGW and is displayed on the end device like a standard media data flow.
  • Each future deployment of IPTV or other services can be combined with a method concerning the invention.
  • End users can connect new end devices to the HGW and can use the benefits of present invention without exhausting configurations of the end device. Thus the end devices work instantaneously with services "out of the box". Complexity of the end device signalling logic is reduced by providing an "intelligent" HGW which provides the error indication information.
  • the flash-ROM which can be configured using remote configuration means, the error messages can be adapted to each kind of error.

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  • Engineering & Computer Science (AREA)
  • Automation & Control Theory (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Computing Systems (AREA)
  • Environmental & Geological Engineering (AREA)
  • Data Exchanges In Wide-Area Networks (AREA)

Abstract

L'invention porte sur un procédé de fourniture d'informations d'indication d'erreur au niveau d'un dispositif d'extrémité, ledit dispositif d'extrémité étant connecté à un réseau des locaux d'abonné (CPN) et étant capable de recevoir et de traiter des flux de données provenant dudit CPN, durant un fonctionnement normal, ledit CPN étant connecté à un réseau d'opérateur par l'intermédiaire d'une passerelle domestique (HGW) et, durant un fonctionnement normal, un flux de données multimédia étant reçu par ledit dispositif d'extrémité, ledit flux de données multimédia étant transmis sur un trajet de communication s'étendant sur au moins des parties dudit réseau d'opérateur, ladite HGW et au moins des parties dudit CPN, ledit dispositif étant caractérisé par les étapes consistant à déterminer un indicateur d'état représentatif de l'état de communication sur ledit trajet de communication, à déterminer la présence d'un cas d'erreur sur la base dudit indicateur d'état, à remplacer ledit flux de données multimédia par un flux de données d'erreur par ladite HGW, ledit flux de données d'erreur contenant des informations d'indication d'erreur selon le cas d'erreur déterminé, et à diriger ledit flux de données d'erreur vers ledit dispositif d'extrémité.
PCT/EP2009/007343 2008-10-14 2009-10-13 Procédé de fourniture d'informations d'indication d'erreur au niveau d'un dispositif d'extrémité WO2010043373A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
EP08017955 2008-10-14
EP08017955.9 2008-10-14

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US11330242B2 (en) 2010-08-11 2022-05-10 Ge Video Compression, Llc Multi-view signal codec

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5917537A (en) * 1994-09-12 1999-06-29 Bell Atlantic Level 1 gateway for video dial tone networks
US20050002400A1 (en) * 2003-06-21 2005-01-06 Karol Mark J. System and method for notification of internet users about faults detected on an IP network
EP1659743A1 (fr) * 2004-11-19 2006-05-24 Research In Motion Limited Méthode et système pour l'identification de la dégradation d'un service media par détermination du taux de perte de paquets
WO2007098286A2 (fr) * 2006-02-27 2007-08-30 Vonage Holdings Corp. Procede et systeme pour fournir une messagerie a l'etat passif

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5917537A (en) * 1994-09-12 1999-06-29 Bell Atlantic Level 1 gateway for video dial tone networks
US20050002400A1 (en) * 2003-06-21 2005-01-06 Karol Mark J. System and method for notification of internet users about faults detected on an IP network
EP1659743A1 (fr) * 2004-11-19 2006-05-24 Research In Motion Limited Méthode et système pour l'identification de la dégradation d'un service media par détermination du taux de perte de paquets
WO2007098286A2 (fr) * 2006-02-27 2007-08-30 Vonage Holdings Corp. Procede et systeme pour fournir une messagerie a l'etat passif

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US11330242B2 (en) 2010-08-11 2022-05-10 Ge Video Compression, Llc Multi-view signal codec
US11843757B2 (en) 2010-08-11 2023-12-12 Ge Video Compression, Llc Multi-view signal codec

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