Distributed dynamic power-aware buffering for multi-Gbps video streaming in IEEE 802.11ad fast session transfer

This paper proposes a distributed and stochastic algorithm for power-aware buffer management in 60 GHz IEEE 802.11ad wireless video streaming. Since 60 GHz wireless packets are very weak in non-line-of-sight scenarios due to the high attenuation, related 60 GHz wireless algorithms have been investigated including beamforming, relaying, fast session transfer (FST). Among them, FST defines the policy for the inter-operation between 2.4/5 GHz and 60 GHz wireless channels. This paper designs a distributed and stochastic algorithm that computes the amounts of power allocations for streaming video packets in the multi-hop wireless networks of FST devices. The algorithm aims on the joint optimization of (i) minimization of the sum of time average expected power consumption and (ii) video transmission buffer stability. Our simulation results show the improvement and the tradeoffs between the two optimization criteria.