Why Mobile TV Does Not Use IPTV
Cell tv may be watched on a clever or 3G cell cellphone, which includes the LG Vu or Samsung SCH u620 smart telephone. Both AT&T wireless and Verizon wireless provide cell tv offerings. For Verizon, it’s miles VCAST tv and for AT&T, it’s far AT&T cell television. Both AT&T and Verizon cellular television use MediaFLO technology from Qualcomm to broadcast the VHF (719 MHz center frequency) virtual tv alerts to the cell phones. Cellular television provider from one-of-a-kind carrier bundle one-of-a-kind set of television channels in its broadcast (in the variety of 10 to 12 television channels in a simple package).
Cell tv provider does no longer use the mobile cellphone network to transmit the tv signals. Alternatively, it makes use of a separate community to distribute, transmit and broadcast the television indicators to the cellular phones. It most effective uses the cell smartphone network to offer interactivity and consumer authorization with the television service issuer. iptv lista For the reason that 3G mobile smartphone community from AT&T and Verizon are each succesful to carry IP visitors, it seems to be apparent that the simplest implementation for cell tv is using IPTV. An amazing instance is AT&T already the usage of IPTV in its U-verse carrier (internet, phone and tv).
To recognize why mobile television does no longer use IPTV, the unicast nature of the cellular smartphone community needs to be defined. The contemporary 3G (UMTS, EVDO) cell smartphone community are designed to carry unicast traffic handiest, i.E. Factor to factor connection desires to be set up among the user and the Media server so as for the network to supply the tv traffic to the cellular smartphone. Because television is a printed carrier, i.E. A point to multipoint connection is required for cell television carrier. To put into effect factor to multipoint connection, the cell smartphone community wishes to set up an IP connection among the Media server and every cellular consumer receiving the broadcast simultaneously. Those many connections will effortlessly overrun the potential of the cell phone network and blocks other voice and facts traffic that needs to use the community.
For cellular tv to apply IPTV, the IP multicast characteristic needs to be implemented at the cell telephone network. Multicasting is the approach of transmitting a single video signal concurrently to more than one cease users. All viewers obtain the equal sign on the same time however there aren’t any separate streams (connections) for every recipient. IP multicast is extensively used within the transport of broadcast tv offerings over IP networks. It drastically reduces the quantity of bandwidth required to transmit excessive quality IPTV content across a community. This is because best a unmarried replica of each video flow wishes to be sent to a router, which in flip makes a replica of that move for the soliciting for gadgets. No longer handiest does multicast reduce the bandwidth requirements of the community however the processing energy of the Media server can also be kept relatively low because it handiest transmits one reproduction of an IPTV flow at a time.
Although the current 3G cell network from AT&T and Verizon does not have IP multicast, but, the subsequent 3G cell community upgrade from each carriers might also consist of the IP multicast function. For AT&T wireless, the following network improve can be HSPA (high velocity Packet access) which supports the MBMS (Multimedia Broadcast Multicast services) feature. For Verizon wireless, the following improve might be EVDO Rev A which supports the BCMCS (Broadcast and Multicast services) characteristic. Subsequently, the future cell tv service from both AT&T wi-fi and Verizon wi-fi may use IPTV implementation.