WO2007113716A2 - Transmission de données via un réseau IP et un réseau de diffusion - Google Patents

Transmission de données via un réseau IP et un réseau de diffusion Download PDF

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Publication number
WO2007113716A2
WO2007113716A2 PCT/IB2007/050983 IB2007050983W WO2007113716A2 WO 2007113716 A2 WO2007113716 A2 WO 2007113716A2 IB 2007050983 W IB2007050983 W IB 2007050983W WO 2007113716 A2 WO2007113716 A2 WO 2007113716A2
Authority
WO
WIPO (PCT)
Prior art keywords
network
server
broadcast
data
client
Prior art date
Application number
PCT/IB2007/050983
Other languages
English (en)
Other versions
WO2007113716A3 (fr
Inventor
Bo Liu
Gang Wang
Fang Liu
Jian Zhang
Original Assignee
Koninklijke Philips Electronics N.V.
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 Koninklijke Philips Electronics N.V. filed Critical Koninklijke Philips Electronics N.V.
Publication of WO2007113716A2 publication Critical patent/WO2007113716A2/fr
Publication of WO2007113716A3 publication Critical patent/WO2007113716A3/fr

Links

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
    • H04L12/1886—Arrangements for providing special services to substations for broadcast or conference, e.g. multicast with traffic restrictions for efficiency improvement, e.g. involving subnets or subdomains
    • 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
    • H04L12/1836—Arrangements for providing special services to substations for broadcast or conference, e.g. multicast with heterogeneous network architecture

Definitions

  • the present invention relates to a method and system for data communication via an IP network and a broadcast network
  • IP network e.g. Internet
  • IP network Internet or Intranet
  • Fig.l schematically shows a known structure of a server and a client in an IP communication network system.
  • a server 100 for providing data content comprises an IP interface 101, a request receiving module 102, and a content source 103.
  • the server 100 is connected to an IP network that is schematically shown as "IP" in Fig.l via the IP interface 101.
  • a client 200 or so-called User Equipment (UE), is also connected to IP to obtain data content.
  • the client 200 comprises an IP interface 201, a content receiving means 202, and a request sending means 203.
  • the content receiving means 202 is coupled with a content rendering device 204.
  • line type Ll shows the transmit path of requests for content from the user equipment to the server
  • line type L2 shows the transmit path of contents from the server to the client.
  • the client 200 sends a request for some content to the server 100 via request sending means 203, through IP interface 201 and the IP network.
  • a request is received by the request receiving module 102 after passing through the server IP interface 101.
  • the server 100 will transmit the requested content from the content source 103 to the client 200 via the IP network.
  • the requested content will be received by the content receiving means 202, and can be rendered to a user via the content rendering device 204.
  • the present invention proposes a communication system between a client (300) and a server (400) connected via an IP network and a broadcast network, which system comprises: a request generating unit (301) for the client (300) to generate a request for obtaining a data content stored on the server (400); a search unit (302) for the client (300) to search, in a data table stored with said client (300) and containing characteristics of data contents statistically requested the most to said server (400) via the IP network and scheduled to be broadcast via the broadcast network, whether or not said data content is listed; a first evaluation unit (304) for evaluating a first duration necessary for obtaining the data content from the server (400) via the IP network; a second evaluation unit (305) for evaluating from said characteristics a second duration necessary for obtaining the data content from the server (400) via the broadcast network; a sending unit (303) for sending the request to the server (400) via the IP network if the requested data content is not listed in the data table, or the second duration is longer than the first duration;
  • the present invention also proposes a system for sending a data content by a server to a client connected via an IP network and a broadcast network, which system comprises: a data table generating unit for generating a data table containing characteristics of data contents statistically requested the most to said server via the IP network and scheduled to be broadcast via the broadcast network; a data table broadcasting unit for broadcasting the data table from the server to the client; a broadcasting unit for the server to broadcast the data content according to the broadcast schedule of the data table.
  • the present invention also proposes a data communication method of performing the function of above system as disclosed according to this invention.
  • an IP network deals with "one-to-one" connections.
  • a server or a client has its unique address, different data may be transferred from the server to different clients according to different unique addresses of the different clients embedded in the data.
  • a broadcast network typically deals with "one-to- many" connections. The server always sends the data content to all the clients, all the clients connected to the broadcast network are deemed the same.
  • IP networks are usually constructed on the basis of telecommunication networks.
  • the broadcast network may be a cable TV network or radio network. Digital broadcast technology has been rapidly developed and standardized, which opens opportunities for some novel services such as the IP data cast service.
  • the server can generate a data table comprising characteristics of data contents statistically requested the most to said server via the IP network and scheduled to be broadcast via the broadcast network, and broadcast the data content requested the most according to such data table.
  • the client can search from the data table before requesting the data content from the server via the IP network; once the content is available or can be retrieved from the broadcast network in a shorter period, the client will no longer request the data content via the IP network.
  • the invention allows the broadcast network to take part of the workload of the IP network.
  • the requested data can be transmitted via the broadcast network instead of the IP network; on the other hand, since the data content requested the most is broadcast, many clients may retrieve the data content via the broadcast network directly instead of requesting it via the IP network. Therefore the potential request and thus network occupation can be reduced. As a result, the data communication efficiency can be increased, and the broadcast network resources be employed more efficiently.
  • the network service capability and quality can be improved. It is possible for a data service provider to adopt this solution to retain the customer by improving its service quality (e.g., less delay, lower costs). It is also possible for an end user supported by an IP network and broadcasting network to benefit from the solution, e.g. less delay, quick response from the network service.
  • Fig.l shows schematically a structure of a known IP communication network system.
  • Fig.2 shows schematically a new structure of a data communication network system according to the invention.
  • the invention discloses a communication system between a server and a client connected via an IP network and a broadcast network.
  • the server may be a website server, intranet server, a computer or other equipment, to receive requests from the client and provide the data content accordingly.
  • the client may be a computer, a mobile phone, a User Equement or any information equipment, to request the data content stored on the server and receive the data content accordingly.
  • the server and the client should be connected via both an IP network and a broadcast network.
  • Fig.2 schematically shows a new structure of a data communication system between a client 300 and a server 400 connected via an IP network and a broadcast network according to the invention.
  • the IP network is shown as "IP” in Fig.2
  • the broadcast network is shown as "B” in Fig.2.
  • line type Ll shows the transmit path of a request for content
  • line type L2 shows the transmit path of the content
  • line type L3 shows the transmit path of the broadcast information.
  • the client 300 comprises: a request generating unit 301 for generating a request by the client to obtain a data content stored on the server 400; a search unit 302 for searching in a data table stored with said client 300 and containing characteristics of data contents statistically requested the most to said server 400 via the IP network and scheduled to be broadcast via the broadcast network, whether or not said data content is listed; a first evaluation unit 304 for evaluating a first duration of obtaining the data content from the server via the IP network; a second evaluation unit 305 for evaluating from said characteristics a second duration of obtaining the data content from the server via the broadcast network; a sending unit 303 for sending the request to the server 400 via the IP network if the requested data content is not listed in the data table, or the second duration is longer than the first duration; a data content receiving unit 306 for receiving the data content from the broadcast network if the second duration is not longer than the first duration.
  • the data content could be all kinds of formats, such as video, audio, picture, flash, and also can be any kind of data unit.
  • the client 300 may also comprise the data table receiving unit 307 for receiving and storing the data table received from the server 400; and, a comparing unit 308 for comparing the first duration with the second duration so as to decide which duration is shorter.
  • the data content receiving unit 306 may comprise a data storage 309 for storing the data content received from the server 400; the data content receiving unit 306 may also receive data content from the server 400 via the IP network.
  • the server 400 comprises: a data table generating unit 401 for generating a data table that contains characteristics of data contents statistically requested the most to said server via the IP network and scheduled to be broadcast via the broadcast network; a data table broadcasting unit 402 for broadcasting the data table from the server to the client; a broadcasting unit 403 for the server 400 to broadcast the data content according to the broadcast schedule of the data table.
  • the server 400 may also comprise: a request receiving unit 404 for the server 400 to receive the request from the client via the IP network; a data content source 405 for storing the data content intended to be sent to the client 300; a ranking unit 406 for the server 400 to rank the requested data content according to the frequency of requests made to the server 400 via the IP network.
  • the request generating unit 301 of the client 300 generates a request for retrieving a data content stored on the server 400.
  • the search unit 302 can search in the data table stored in the data table receiving unit 307 to check whether the requested content is available via the broadcast network.
  • the data table is received from the server 400 by the data table receiving unit 307 and can be updated periodically by the server 400, which has the characteristics of data contents statistically requested the most to said server 400 via the IP network and scheduled to be broadcast via the broadcast network. If the requested data content is not listed in the data table, the sending unit 303 will request the data content from the server 400 via the IP network.
  • the client 300 will perform some evaluations for obtaining the data content. Firstly, the first evaluation unit 304 will evaluate a first duration necessary for obtaining the data content from the server 400 via the IP network; secondly, the second evaluating unit 305 will evaluate a second duration necessary for obtaining the data content from the server 400 via the broadcast network; the above two durations can be compared by the comparing unit 308. According to the evaluations result, if the second duration is longer than the first duration, the client 300 will continue to request the data content via the IP network; otherwise, the receiving unit 307 will receive the requested data content via the broadcast network according to the broadcast schedule of the data table 303.
  • the data table generating unit 401 firstly generates a data table containing characteristics of data contents statistically requested the most to said server via the IP network and scheduled to be broadcast via the broadcast network. Then the data table broadcasting unit 402 will broadcast the data table to the client 300. Subsequently, the broadcasting unit 403 will broadcast the data contents according to the broadcast schedule of the data table.
  • the data table may be generated by the server 400, may also be done by a device external from the server 400.
  • the request receiving unit 404 receives request(s) for the data content stored in the data content source 405 from the client 300 via the IP network; secondly, the ranking unit 406 ranks the requested data content according to the frequency of requests made to the server 400 via the IP network. According to the ranking of requested data content, data content requested the most will be determined to be broadcast and will be scheduled and listed in the data table.
  • the data table may include all characteristics or any information necessary to enable the related data content to be reliably received by the client 300 and on time, such as data ID, sending time, size, network ID or channel ID.
  • the data table can be an independent file, or a comprehensive table listing related information for many different data contents.
  • the data content received by the client can also be stored in a content buffer, so that the client may check the buffer first before requesting via the network or searching from the data table 303.
  • the receiving unit 307 may be coupled with a data rendering means, e.g. a monitor, so as to render the data content received.
  • a data rendering means e.g. a monitor
  • the requested data content may be broadcast according to the data table and meanwhile be transmitted to each client that sends the request via the IP network.
  • the client 300 or the server 400 may work independently, not relying on each other.

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Data Exchanges In Wide-Area Networks (AREA)
  • Information Transfer Between Computers (AREA)
  • Two-Way Televisions, Distribution Of Moving Picture Or The Like (AREA)

Abstract

La présente invention concerne une méthode pour fournir un contenu via un réseau IP et un réseau de diffusion, ladite méthode comprenant les étapes consistant à : recevoir une requête depuis un équipement d'un utilisateur visant à obtenir un contenu ; évaluer s'il convient de diffuser le contenu en fonction d'un critère spécifique ; générer l'information de diffusion du contenu si ledit contenu a été évalué comme pouvant être diffusé ; diffuser l'information de diffusion ; diffuser le contenu. L'invention concerne également, de manière correspondante, une méthode d'obtention de contenus, un système de fourniture et un système d'obtention de contenus via les informations de diffusion. Selon la présente invention, le rendement du réseau quant à la transmission de contenus peut être amélioré.
PCT/IB2007/050983 2006-03-31 2007-03-21 Transmission de données via un réseau IP et un réseau de diffusion WO2007113716A2 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CN200610073362 2006-03-31
CN200610073362.9 2006-03-31

Publications (2)

Publication Number Publication Date
WO2007113716A2 true WO2007113716A2 (fr) 2007-10-11
WO2007113716A3 WO2007113716A3 (fr) 2007-11-29

Family

ID=38255554

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/IB2007/050983 WO2007113716A2 (fr) 2006-03-31 2007-03-21 Transmission de données via un réseau IP et un réseau de diffusion

Country Status (1)

Country Link
WO (1) WO2007113716A2 (fr)

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20040221019A1 (en) * 2003-04-30 2004-11-04 Speedera Networks, Inc. Automatic migration of data via a distributed computer network
US20050154996A1 (en) * 2003-08-11 2005-07-14 Core Mobility, Inc. Systems and methods for populating a ticker using multiple data transmission modes

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20040221019A1 (en) * 2003-04-30 2004-11-04 Speedera Networks, Inc. Automatic migration of data via a distributed computer network
US20050154996A1 (en) * 2003-08-11 2005-07-14 Core Mobility, Inc. Systems and methods for populating a ticker using multiple data transmission modes

Also Published As

Publication number Publication date
WO2007113716A3 (fr) 2007-11-29

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