Title :
Performance analysis of packet errors on IEEE 802.11-based DCF and EDCF
Author :
Sungjin Shin ; Jong-moon Chung
Author_Institution :
Sch. of Electr. & Electron. Eng., Yonsei Univ., Seoul, South Korea
Abstract :
The effect of packet size differences, that has not been taken into account in existing papers on the IEEE 802.11 distributed coordinated function (DCF) and 802.11e enhanced distributed coordinated function (EDCF), has been investigated, and improved throughput equations that lead to accurate performance representation in erroneous wireless channels are provided. Wi-Fi devices that use the DCF and the EDCF reduce the risk of data packet transmission failure using request to send (RTS) and clear to send (CTS) packets by removing the hidden node problem. However, as the bit error rate (BER) increases (especially near the signal coverage edge of the other communicating device), even though RTS/CTS packets may succeed in communication, data packets may fail due to packet errors based on their larger packet sizes. This phenomenon is confirmed through actual measurements and mathematical performance analysis is carried out to accurately express the performance of 802.11-based communications in erroneous conditions.
Keywords :
computer network performance evaluation; computer network reliability; error statistics; packet radio networks; wireless LAN; wireless channels; BER; CTS packets; IEEE 802.11-based DCF; IEEE 802.11-based EDCF; IEEE 802.11-based communications; RTS packets; Wi-Fi devices; bit error rate; clear to send packets; data packet transmission failure risk reduction; distributed coordinated function; enhanced distributed coordinated function; hidden node problem removal; mathematical performance analysis; packet errors; packet size difference effect; performance analysis; request to send packets; throughput equations; wireless channels; wireless fidelity devices;
Journal_Title :
Electronics Letters
DOI :
10.1049/el.2014.3381
