IP over DVB

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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. Application examples include:

• Data broadcast (datacast), for example a data carousel sending programme information and media over and over again.
• IP 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 access 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 TV receiver, for example a DVB-H receiver.

All services except the first requires some kind of return channel. Examples of return channels are

• DVB-RCT (DVB return channel terrestrial)
• POTS modems
• ADSL
• GPRS
• 3G

Examples of protocols for IP over MPEG transport stream are:

• MPEG Multiprotocol encapsulation (MPE), or ETSI-DAT. EN 301 192, "Specifications for Data Broadcasting", European Telecommunications Standards Institute(ETSI), 2004.
• MPEG Unidirectional Lightweight Encapsulation (ULE) (RFC 4326)
• Unidirectional link (UDE)
• DVB-H IP datacasting IPDC

[edit] See also

• UDcast
• DVB-MHP (Multimedia Home Platform)