불완전 채널 감지하의 IEEE 802.11 DCF 포화상태 성능 분석 = Saturated Performance Analysis of IEEE 802.11 DCF with Imperfect Channel Sensing

국문 초록 (Abstract)

본 논문은 불완전한 채널 감지를 고려한 포화 상태에서의 IEEE 802.11 carrier-sense multiple access with collision-avoidance(CSMA/CA)의 성능을 분석한다. 불완전한 채널 감지는 missed-detection과 false alarm을 포함하는데, 이러한 불완전한 채널 감지가 IEEE 802.11의 성능에 미치는 영향을 분석하고 이를 수식적으로 표현한다. 물리 계층의 불완전한 채널 감지를 표현하기 위해, 본 논문에서는 기존의 2차원 마코프 프로세스 모델을 수정했다. 모의실험 결과와 제안된 모델의 이론적인 결과가 일치하는 것을 보였다. 이러한 실험결과를 바탕으로, 감지 확률이 IEEE 802.11의 성능에 있어 가장 중요한 요소임을 확인하였다.

다국어 초록 (Multilingual Abstract)

In this paper, performance of IEEE 802.11 carrier-sense multiple access with collision-avoidance (CSMA/CA) protocols in saturated traffic conditions is presented taking into account the impact of imperfect channel sensing. The imperfect channel sensing includes both missed-detection and false alarm and their impact on the performance of IEEE 802.11 is analyzed and expressed as a closed form. To include the imperfect channel sensing at the physical layer, we modified the state transition probabilities of well-known two state Markov process model. Simulation results closely match the theoretical expressions confirming the effectiveness of the proposed model. Based on both theoretical and simulated results, the probability of detection is concluded as a dominant factor for the performance of IEEE 802.11.

참고문헌 (Reference)

1 F. Daneshgaran, "Unsaturated throughput analysis of IEEE802. 11 in presence of non-ideal transmission channeland capture effects" 7 (7): 1276-1286, 2008

2 M. Ergena, "Throughput analysis andadmission control in IEEE 802.11a" 10 (10): 705-716, 2005

3 A. Alshanyour, "Throughput Analysisof IEEE 802. 11 DCF in the Presence ofTransmission Errors" 28 (28): 349-364, 2010

4 J. Robinson, "Saturation throughputanalysis of IEEE802.11e enhanced distributedcoordination function" 33 (33): 917-928, 2004

5 I. Tinnirello, "Refinements onIEEE 802. 11 Distributed Coordination FunctionModeling Approaches" 59 (59): 1055-1067, 2010

6 Y. Zheng, "PerformanceAnalysis of IEEE 802.11 DCF in ImperfectChannels" 55 (55): 1648-1656, 2006

7 G. Bianchi, "Performance analysis of the IEEE802. 11 distributed coordination function" 18 (18): 535-547, 2000

8 Y. Xiao, "Performance analysis of priority schemesfor IEEE802.11 and IEEE802.11e wireless LANs" 4 (4): 1506-1515, 2005

9 P. Chatzimisios, "Performance Analysis of IEEE 802. 11 MACprotocol for WLAN" 545-569, 2005

10 G. Prakash, "Non-Saturation ThroughputAnalysis of IEEE 802. 11 Distributed CoordinationFunction" 51 (51): 157-167, 2011

11 D. Malone, "Modelling the802. 11 distributed coordination function innon-saturated heterogeneous conditions" 15 (15): 159-172, 2007

12 K. Duffy, "Modeling the802.11 distributed coordination function innon-saturated conditions" 9 (9): 715-717, 2005

13 T. D. Senthilkumar, "Enhancement toIEEE 802. 11 Distributed Coordination Function toReduce Packet Retransmissions Under ImperfectChannel Conditions" 1-25, 2011

14 S. Nagaraj, "Differential preamble detection in packet-basedwireless networks" 8 (8): 599-607, 2009

15 J. W. Chong, "Cross-LayerPerformance Analysis for CSMA/CA Protocols:Impact of Imperfect Sensing" 59 (59): 1100-1108, 2010

16 C. Foh, "A Markovianframework for performance evaluation of IEEE802. 11" 6 (6): 1276-1285, 2007