Why Portable TV Does Not Use IPTV

It only uses the mobile phone system to supply interactivity and consumer authorization with the TV support provider. Considering that the 3G cellular phone system from AT&T and Verizon are generally able to transport IP traffic, it is apparently apparent that the simplest implementation for cellular TV is applying IPTV. A good example is AT&T currently applying IPTV in its U-verse company (internet, phone and TV).

To understand just why cellular TV doesn't use IPTV, the unicast nature of the cell phone system needs to be explained. The present 3G (UMTS, EVDO) cellular phone system are made iptv provider hold unicast traffic just, i.e. indicate stage relationship must be create between the consumer and the Press host for the system to provide the TV traffic to the portable phone.

Because TV is a broadcast service, i.e. an indicate multipoint connection is required for cellular TV service. To apply point out multipoint relationship, the cellular phone system wants to setup an IP relationship involving the Press machine and each portable person obtaining the broadcast simultaneously. These several associations may simply overrun the ability of the cell phone network and prevents different style and data traffic that needs to use the network.

For cellular TV to use IPTV, the IP multicast feature must be executed on the cellular phone network. Multicasting could be the means of sending just one video signal simultaneously to multiple end users. All visitors get exactly the same indicate at once but there are no split channels (connections) for each recipient. IP multicast is generally used in the distribution of transmitted TV companies around IP networks.

It somewhat reduces the total amount of bandwidth needed to broadcast good quality IPTV content across a network. This is because merely a single duplicate of each movie supply needs to be provided for a router, which in turn makes a replicate of that supply for the requesting devices. Not merely does multicast reduce steadily the bandwidth needs of the network but the control power of the Press machine may also be held fairly low since it just directs one replicate of an IPTV stream at a time.

Though the existing 3G portable network from AT&T and Verizon does not have IP multicast, however, the following 3G mobile network update from equally companies might range from the IP multicast feature. For AT&T Instant, the following system upgrade will soon be HSPA (High Speed Package Access) which helps the MBMS (Multimedia Transmitted Multicast Services) feature. For Verizon Instant, the next update is going to be EVDO Rev A which supports the BCMCS (Broadcast and Multicast Services) feature. Hence, the near future cellular TV company from equally AT&T Wireless and Verizon Instant may use IPTV implementation.