CMT-CC: Cross-Layer Cognitive CMT for Efficient Multimedia Distribution over Multi-homed Wireless Networks

摘要

This paper proposes CMT-CC, a novel cross-layer cognitive concurrent multipath transfer (CMT) solution necessitating the following aims: (i) cross-layer design, (ii) fairness to TCP-like flows, and (iii) improve users' quality of experience for multimedia streaming service. To satisfy above requirements, a newly cross-layer network condition sensor is designed in CMT-CC in order to cognize network condition and distinguishes the causes of network condition change. An intelligent multimedia content distributor is further introduced in CMT-CC for enabling adaptive multimedia distribution behavior appropriate for the varying wireless network condition. To make CMT-CC preserve fairness to TCP flows on congested links, a weighted moving congestion window based TCP-friendly congestion control mechanism is developed in CMT-CC. The results gained by a close realistic simulation topology show how the proposed CMT-CC solution significantly improves throughput, as well as multimedia delivery performance while still remaining fair to TCP-like flows.