Link on-off prediction based multipath transfer optimization for aircraft
JIANG Zhuo1,2, WU Qian2,3, LI Hewu2,3, WU Jianping1,2
1. Department of Computer Science and Technology, Tsinghua University, Beijing 100084, China;
2. Institute of Network Sciences and Cyberspace, Tsinghua University, Beijing 100084, China;
3. Tsinghua National Laboratory for Information Science and Technology, Tsinghua University, Beijing 100084, China
Abstract：The two main technologies used for aircraft internet access are satellite and air-to-ground (ATG) communication systems. When an aircraft flies over areas with overlapping signals, communicating with multiple paths may greatly improve transmission performance. This paper presents an optimization scheme for multipath transmissions in such aircraft multiple access scenarios. The slow link state discovery rates and inefficient data scheduling are improved by a link on-off prediction based data scheduling algorithm. The severe out-of-order condition caused by a long link round trip time (RTT) and loss rate differences is improved by transmitting a data level negative acknowledgement with all subflows from the receiver so that the sender can quickly identify and retransmit lost packets. Simulations show that this method is better than existing mechanisms for both the aggregated bandwidth and the average number of out of order packets.
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JIANG Zhuo, WU Qian, LI Hewu, WU Jianping. Link on-off prediction based multipath transfer optimization for aircraft. Journal of Tsinghua University(Science and Technology), 2017, 57(12): 1239-1244.
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2017, Vol. 57 
