Portable TV support does not use the cellular phone network to send the TV signals. Instead, it works on the split network to deliver, broadcast and transmitted the TV signals to the mobile phones. It just employs the mobile phone system to provide interactivity and consumer authorization with the TV service provider. Because the 3G cellular phone network from AT&T and Verizon are both ready to hold IP traffic, it appears to be evident that the easiest implementation for portable TV is using IPTV. An example is AT&T previously using IPTV in its U-verse support (internet, telephone and TV).
To understand why portable TV doesn't use IPTV, the unicast nature of the cellular phone system needs to be explained. The existing 3G (UMTS, EVDO) mobile phone system are designed to bring unicast traffic just, i.e. point to level connection needs to be create between an individual and the Press machine in order for the system to deliver the TV traffic to the mobile phone.
Because TV is a transmitted support, i.e. an indicate multipoint relationship is required for portable TV service. To apply point to multipoint relationship, the cellular phone network needs to create an IP relationship involving the Press host and each mobile individual obtaining the Abonnement iptv samsung simultaneously. These many contacts will easily overrun the capability of the mobile phone network and prevents other voice and data traffic that requires to utilize the network.
For mobile TV to make use of IPTV, the IP multicast feature must be applied on the cellular phone network. Multicasting is the technique of shifting a single video indicate simultaneously to multiple conclusion users. All audiences get the same indicate at once but you will find no split up streams (connections) for each recipient. IP multicast is commonly used in the delivery of transmitted TV services around IP networks. It considerably decreases the quantity of bandwidth needed to transfer top quality IPTV material across a network.
This is because just a single duplicate of each and every video flow needs to be delivered to a modem, which often makes a copy of the supply for the seeking devices. Not just does multicast reduce steadily the bandwidth demands of the network however the handling power of the Press host can be held fairly minimal because it just directs one replicate of an IPTV stream at a time.
Though the current 3G mobile network from AT&T and Verizon does not have IP multicast, but, the following 3G portable system update from equally companies may include the IP multicast feature. For AT&T Wireless, the next system upgrade will be HSPA (High Pace Packet Access) which helps the MBMS (Multimedia Transmitted Multicast Services) feature. For Verizon Instant, another upgrade will soon be EVDO Rev A which supports the BCMCS (Broadcast and Multicast Services) feature. Hence, the long run portable TV service from equally AT&T Wireless and Verizon Instant may possibly use IPTV implementation.