International audienceThe link budget of a Digital Video Broadcasting (DVB) handheld receiver is weak compared to fixed receivers because of its configurational disadvantages. In our proposition, the LTE network helps in resolving the DVB handheld outage by retransmitting the missing DVB sequences to the handheld receivers. Our model analyzes the load over the LTE access network due to the retransmission of the missing sequences of a DVB transmission.We assume a low-definition DVB TV service to be received by each of the handheld terminals. It was found that along with achieving a correct DVB flow using LTE network, it is also possible to save a fair amount of DVB transmission power for a reasonable load over the LTE network. We analyze our model for several different Inter-Site Distances (ISD) among eNodeBs. It is observed that with the smaller ISDs it is possible to further reduce the load over the LTE network

Watching television on a portable device is possible on broadcast and cellular systems. With broadcast technologies, due to the absence of a feedback channel it is not possible to guarantee an error free reception at the receivers. With cellular technologies, the transmission is based on unicast and the same content is transmitted as many times as the number of people who are watching the same program in the cell. We propose to combine both technologies and consider the concept of repair-ing a broadcast data flow for dualmode (cellular and broadcast) smartphones in real time in order to ensure a better quality of service. We propose to use the constrained application pro-tocol (CoAP) and specify a real-time flow repair (RFR) service based on CoAP in the cellular networks. We describe the archi-tecture to provide such a service. We analyze the load generated in the cellular radio access network due to the retransmission of the packets lost on the broadcast system and also develop a model for the evaluation of the residual errors in the RFR operations.

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