IP over DVB
Encyclopedia
IP over DVB or IP over MPEG implies that Internet Protocol
datagrams are transferred over the MPEG transport stream
, and are distributed using some digital television system, for example DVB-H
, DVB-T
, DVB-S
or DVB-C
.
Internet Protocol
The Internet Protocol is the principal communications protocol used for relaying datagrams across an internetwork using the Internet Protocol Suite...
datagrams are transferred over the MPEG transport stream
Transport stream
MPEG transport stream is a standard format for transmission and storage of audio, video, and Program and System Information Protocol data, and is used in broadcast systems such as DVB and ATSC....
, and are distributed using some digital television system, for example DVB-H
DVB-H
DVB-H is one of three prevalent mobile TV formats. It is a technical specification for bringing broadcast services to mobile handsets. DVB-H was formally adopted as ETSI standard EN 302 304 in November 2004. The DVB-H specification can be downloaded from the official DVB-H website...
, DVB-T
DVB-T
DVB-T is an abbreviation for Digital Video Broadcasting — Terrestrial; it is the DVB European-based consortium standard for the broadcast transmission of digital terrestrial television that was first published in 1997 and first broadcast in the UK in 1998...
, DVB-S
DVB-S
DVB-S is an abbreviation for Digital Video Broadcasting — Satellite; it is the original Digital Video Broadcasting forward error coding and demodulation standard for satellite television and dates from 1994, in its first release, while development lasted from 1993 to 1997...
or DVB-C
DVB-C
DVB-C stands for Digital Video Broadcasting - Cable and it is the DVB European consortium standard for the broadcast transmission of digital television over cable...
.
Application examples
- Data broadcast (datacast), for example a data carousel sending programme information and media over and over again.
- IP MulticastIP MulticastIP multicast is a method of sending Internet Protocol datagrams to a group of interested receivers in a single transmission. It is often employed for streaming media applications on the Internet and private networks. The method is the IP-specific version of the general concept of multicast...
, for sending media efficiently to a limited group of subscribing users, using only the transmitter towers where users for the moment are situated. - interactive TV services,
- To provide Internet access by utilizing DVB system as a broadband downlink, in combination with some narrow-band duplex system. Examples:
- Satellite Internet accessSatellite Internet accessSatellite Internet access is Internet access provided through satellites. The service can be provided to users world-wide through low Earth orbit satellites. Geostationary satellites can offer higher data speeds, but their signals can not reach some polar regions of the world...
for example to buildings on the country side with satellite dish, using a telephone modem as back-channel - Broadband Internet access to trains
- Mobile broadband Internet access to cellular phones including a mobile TVMobile TVMobile television usually means television watched on a small handheld device. It may be a pay TV service broadcast on mobile phone networks or received free-to-air via terrestrial television stations from either regular broadcast or a special mobile TV transmission format...
receiver, for example a DVB-HDVB-HDVB-H is one of three prevalent mobile TV formats. It is a technical specification for bringing broadcast services to mobile handsets. DVB-H was formally adopted as ETSI standard EN 302 304 in November 2004. The DVB-H specification can be downloaded from the official DVB-H website...
receiver.
- Satellite Internet access
Return channels
All services except the first requires some kind of return channel.- DVB-RCTDVB-RCTDVB-RCT , provides a method by which the DVB-T platform can become a bi-directional, asymmetric, broadband and wireless path between broadcasters and customers...
(DVB return channel terrestrial) - POTSPOTSPOTS may refer to:* Plain old telephone service, basic wireline telecommunication connection** POTS codec, a digital audio device** DSL filter, also known as a POTS filter* Postural orthostatic tachycardia syndrome, a medical condition...
modems - ADSL
- GPRS
- 3G3G3G or 3rd generation mobile telecommunications is a generation of standards for mobile phones and mobile telecommunication services fulfilling the International Mobile Telecommunications-2000 specifications by the International Telecommunication Union...
- DOCSISDOCSISData Over Cable Service Interface Specification is an international telecommunications standard that permits the addition of high-speed data transfer to an existing cable TV system...
(Cable Modems)
Protocols for IP over MPEG transport stream
- MPEG Multiprotocol encapsulationMultiprotocol EncapsulationMultiprotocol Encapsulation, or MPE for short, is a Data link layer protocol definedby DVB which has been published as part of ETSI EN 301 192...
(MPE), or ETSI-DAT. EN 301 192, "Specifications for Data Broadcasting", European Telecommunications Standards Institute(ETSI), 2004. - MPEG Unidirectional Lightweight EncapsulationUnidirectional Lightweight EncapsulationThe Unidirectional Lightweight Encapsulation is a Data link layer protocol for the transportation of network layer packets over MPEG transport streams....
(ULE) (RFC 4326) - Unidirectional link (UDE)
- DVB-HDVB-HDVB-H is one of three prevalent mobile TV formats. It is a technical specification for bringing broadcast services to mobile handsets. DVB-H was formally adopted as ETSI standard EN 302 304 in November 2004. The DVB-H specification can be downloaded from the official DVB-H website...
IP datacastingDatacastingDatacasting is the broadcasting of data over a wide area via radio waves. It most often refers to supplemental information sent by television stations along with digital television, but may also be applied to digital signals on analog TV or radio...
IPDC