Multicasting MDC videos to receivers with different screen resolution

A primary challenge in multicasting video in a wireless LAN has been to deal with the client diversity in terms of channel diversity: clients may have different channel characteristics and hence receive different numbers of packet transmissions from the AP. Various schemes exploiting layered video coding schemes such as MRC and MDC have been proposed to address this problem. With the advent of smartphones, a new form of client heterogeneity, that different portable devices have different screen resolution and hence desire different numbers of layers, has become increasingly prominent. In this paper, we propose a practical transmission strategy selection method that takes into consideration this new form of client diversity and show it can increase the number of layers received by clients by up to 62%, compared to a scheme that is oblivious of the client screen resolution diversity.