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Performance Evaluation of Uplink ACK Packets Transmission IEEE 802.16e WiMAX Systems
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 Title & Authors
Performance Evaluation of Uplink ACK Packets Transmission IEEE 802.16e WiMAX Systems
Jun, Kyung-Koo;
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 Abstract
The need for broadband wireless data networks such as IEEE 802.16e WiMAX systems increases as a variety of wireless information devices like smart phones are adopted rapidly in everyday life. Since most of mobile applications employ TCP as their transport layer protocol, the performance improvement of TCP in WiMAX systems is crucial. This paper proposes an efficient method to transmit uplink piggyback ACK packets by exploiting the uplink packet buffering which happens because of the resource allocation scheme of the WiMAX systems. The proposed method can support not only the ACK filtering but also the merging of the piggyback ACK packets. As a result, the bandwidth reduction in the piggyback ACK packet transmission leads to the improvement of the downlink throughput. The simulation results show that the bandwidth for the ACK packets reduces more than 90%, and the downlink throughput increases at least 30%.
 Keywords
WiMAX;TCP downlink;throughput;ACK filtering;Piggyback;
 Language
Korean
 Cited by
 References
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