ADAPTIVE WIRELESS NETWORKING FOR VIDEO STREAMING

Abstract

ALTHOUGH WIRELESS TECHNOLOGIES HAVE EVOLVED SIGNIFICANTLY OVER THE PAST DECADES, THE WIRELESS BANDWIDTH, HOWEVER, IS STILL INSUFFICIENT TO SUPPORT THE FAST-GROWING MOBILE VIDEO STREAMING TRAFFIC. IN THIS THESIS, WE WORK TOWARDS DESIGNING EFFECTIVE SOLUTIONS IN IMPROVING THE VIDEO STREAMING QUALITY AND THE NETWORK SCALABILITY.

FIRST, WE INVESTIGATE MIXED RESOLUTIONS TILING VIDEO WHERE TILES IN A VIDEO FRAME CAN COME FROM DIFFERENT RESOLUTION STREAMS. APPLYING THIS SCHEME TO ADAPTIVE WIRELESS MULTICAST, WE HAVE THE FOLLOWING OPTIMAL ADAPTIVE MULTICAST ALLOCATION PROBLEM: GIVEN THE SUBSET OF TILES THAT EACH USER REQUESTED, THE LINK RATE OF EACH USER, AND THE AVAILABLE TIME SLOTS, AT WHICH RESOLUTION AND AT WHICH LINK RATE EACH TILE SHOULD BE SENT, TO MAXIMIZE THE OVERALL VIDEO QUALITY BY ALL USERS. BY APPLYING DYNAMIC PROGRAMMING, WE DESIGN AN EFFICIENT ALGORITHM TO OPTIMALLY SOLVE THE PROBLEM ABOVE.

SECOND, WE EXPLORE THE GENERAL MULTI-SESSIONS MULTICAST ALLOCATION PROBLEM, WH