Abstract
The aim of this paper is to investigate the transmi ssion of data between client and server through dif ferent IEEE 802.11 wireless LAN multi- HOP network. To improve this issue, the tran smission opportunity (TXOP) mechanism is defined in the IEEE 802.11e standard, with which a wireless node can transmit multiple fr ames consecutively for a maximum channel occupancy time, called TXOP limit. This paper considers the performance of the TXOP me chanism for multi-hop wireless networks. Focusing oa three-node chain topology, we model it as a tandem queuing network w ith two nodes. The E2ET is derived and the analysis is validated by simulation. Numerical results show that the TXOP mechanism work s well for multi-hop wireless networks. It is also shown that adjusting TXOP limit is significantly important in order to increa se the overall throughput. In terms of multi-hop wi reless networks, there is little analytical work with regard to the E2ET performance . One of the rationales for the analytical difficulty for multi-hop wireless networks is that IEEE 802.11 MAC protocol is too co mplex to model the behavior of multi-hop frame tran smissions.
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