IPTV - Turnkey Answer for TV Operators
Portable TV company doesn't use the cell phone network to broadcast the TV signals. Instead, it uses a split up network to spread, transfer and transmitted the TV signals to the cellular phones. It just employs the mobile phone system to provide interactivity and consumer authorization with the TV company provider. Considering that the 3G mobile phone system from AT&T and Verizon are generally ready to carry IP traffic, it is apparently obvious that the simplest implementation for portable TV is applying IPTV. A good example is AT&T previously applying IPTV in its U-verse support (internet, phone and TV).
To realize why cellular TV doesn't use IPTV, the unicast nature of the cellular phone network must be explained. The current 3G (UMTS, EVDO) cell phone network are created to carry unicast traffic just, i.e. indicate level relationship needs to be identify between an individual and the Press server in order for the system to supply the TV traffic to the mobile phone. Since TV is a broadcast service, i.e. an indicate multipoint connection is needed for mobile IPTV service. To apply indicate multipoint relationship, the cell phone network needs to create an IP connection between the Press host and each portable individual getting the transmitted simultaneously. These many contacts will quickly overrun the capacity of the mobile phone network and prevents different style and information traffic that needs to utilize the network.
For mobile TV to make use of IPTV, the IP multicast function must be implemented on the mobile phone network. Multicasting is the means of transmitting just one video signal simultaneously to multiple end users. All visitors obtain exactly the same indicate at the same time frame but you can find no split up streams (connections) for every single recipient. IP multicast is commonly found in the delivery of broadcast TV companies around IP networks. It significantly decreases the quantity of bandwidth necessary to transfer high quality IPTV content across a network. This is because only a single duplicate of each and every movie flow needs to be provided for a router, which often makes a replicate of that stream for the seeking devices. Not merely does multicast reduce the bandwidth demands of the network nevertheless the running energy of the Media machine can also be held somewhat minimal as it just sends one copy of an IPTV flow at a time.
Though the current 3G cellular system from AT&T and Verizon does not need IP multicast, but, the next 3G cellular system upgrade from equally companies might are the IP multicast feature. For AT&T Wireless, another network update is going to be HSPA (High Speed Supply Access) which supports the MBMS (Multimedia Transmitted Multicast Services) feature. For Verizon Wireless, another upgrade is going to be EVDO Rev A which helps the BCMCS (Broadcast and Multicast Services) feature. Ergo, the long run portable TV support from equally AT&T Instant and Verizon Instant may use IPTV implementation.
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