期刊名称：International Journal of Innovative Research in Computer and Communication Engineering
印刷版ISSN：2320-9798
电子版ISSN：2320-9801
出版年度：2018
卷号：6
期号：1
页码：73
DOI：10.15680/IJIRCCE.2017.0601006
出版社：S&S Publications
摘要：Imperfect scheduling and out-of-order packet delivery makes contemporary cross-layer backpressurearchitecture to operate at much below their capacity because they do not support TCP . In this paper, we proposedXPRESS-TTT ,a throughput optimal cross layer backpressure architecture with TCP support designed to providemaximum throughput of network also provide a coordination among networks.TCP can be operated on top ofXPRESS-TTT because it is implemented at IP layer . In XPRESS-TTT, just like XPRESS network architecture herealso a mesh network is transformed into a wireless switch, where packet routing and scheduling decisions are made bya backpressure scheduler. The Proposed XPRESS-TTT avoids out-of-order packet delivery and variable packet size,optimally load-balances traffic across them when congestion occurs, improving data rate among networks. XPRESSTTTsignals congestion by sending a congestion indicator to TCP whenever the TCP windows size reaches over theoptimal size of window so we avoid transmitting packets through the network and wasting the wireless resources, onlyto drop them at the congestion queues further down the network. XPRESS-TTT uses TCP as transport protocol whichestablishes dedicated connection between source and destination which then avoids out-or-order delivery in multipathrouting. Our simulation result shows that XPRESS-TTT gives 60% more throughput than XPRESS.
关键词：Backpressure scheduling and routing;TCP;congestion control;wireless multihop network.
