Why Cell TV Does Not Use IPTV

Cell TV will be watched on a sensible or 3G cell phone, such because the LG Vu or Samsung SCH u620 good cellphone. Each AT&T Wi-fi and Verizon Wi-fi provide cellular TV companies. For Verizon, it’s VCAST TV and for AT&T, it’s AT&T Cell TV. Each AT&T and Verizon Cell TV use MediaFLO applied sciences from Qualcomm to broadcast the VHF (719 MHz Heart frequency) digital TV indicators to the cellphones. Cell TV service from completely different service bundle completely different set of TV channels in its broadcast (within the vary of 10 to 12 TV channels in a fundamental bundle).

Cell TV service doesn’t use the cell phone community to transmit the TV indicators. As an alternative, it makes use of a separate community to distribute, transmit and broadcast the TV indicators to the cellphones. It solely makes use of the cell phone community to supply interactivity and consumer authorization with the TV service supplier lista iptv. Because the 3G cell phone community from AT&T and Verizon are each succesful to hold IP site visitors, it appears to be apparent that the best implementation for cellular TV is utilizing IPTV. A superb instance is AT&T already utilizing IPTV in its U-verse service (web, cellphone and TV).

To know why cellular TV doesn’t use IPTV, the unicast nature of the cell phone community must be defined. The present 3G (UMTS, EVDO) cell phone community are designed to hold unicast site visitors solely, i.e. level to level connection must be set up between the consumer and the Media server to ensure that the community to ship the TV site visitors to the cell phone. Since TV is a broadcast service, i.e. a degree to multipoint connection is required for cellular TV service. To implement level to multipoint connection, the cell phone community must arrange an IP connection between the Media server and every cellular consumer receiving the published concurrently. These many connections will simply overrun the capability of the cell phone community and blocks different voice and information site visitors that should use the community.

For cellular TV to make use of IPTV, the IP multicast function must be applied on the cell phone community. Multicasting is the strategy of transmitting a single video sign concurrently to a number of finish customers. All viewers obtain the identical sign on the similar time however there aren’t any separate streams (connections) for every recipient. IP multicast is broadly used within the supply of broadcast TV companies over IP networks. It considerably reduces the quantity of bandwidth required to transmit prime quality IPTV content material throughout a community. It’s because solely a single copy of each video stream must be despatched to a router, which in flip makes a replica of that stream for the requesting gadgets. Not solely does multicast cut back the bandwidth necessities of the community however the processing energy of the Media server will also be stored comparatively low as a result of it solely transmits one copy of an IPTV stream at a time.

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