Performance Analysis of IEEE 802.11b DCF-Basic Access and RTS/CTS in CBTC Under Field Conditions

This paper provides performance evaluation of Communication based train control (CBTC) system in terms of extensive saturation throughput and average delay for both basic access and RTS/CTS (Request to send/Clear to send) access mechanism. An experiment is designed to simulate considering varying no of contending stations and slot transmission probability in CBTC under the Wireless LAN Medium Access Control (MAC) and Direct sequence spread spectrum (DSSS) PHY specification for the 2.4 GHz band. It is assumed the saturation condition where N no of stations are contending for one shared channel and each station always has a packet available for transmission. Slot transmission probability is considered as the probability with which a station transmits its packet in a randomly chosen slot. We have considered a specific case of constant back off window wherein slot transmission probability is only dependent on min contention window ($\mathbf{CW}_{\mathbf{min}}$). All simulations have been performed under these assumptions.

[1]  Koushik Kar,et al.  Throughput modelling and fairness issues in CSMA/CA based ad-hoc networks , 2005, Proceedings IEEE 24th Annual Joint Conference of the IEEE Computer and Communications Societies..

[2]  Bhupendra Singh,et al.  Improved system behavior of communication based train control (CBTC) with random packet drops during handover under field condition , 2017, 2017 4th International Conference on Signal Processing and Integrated Networks (SPIN).

[3]  Tao Tang,et al.  Handoff management in communication-based train control networks using stream control transmission protocol and IEEE 802.11p WLANs , 2012, EURASIP J. Wirel. Commun. Netw..

[4]  A. Girotra,et al.  Performance Analysis of the IEEE 802 . 11 Distributed Coordination Function , 2005 .

[5]  Bin Ning,et al.  Train-Ground Communication in CBTC Based on 802.11b: Design and Performance Research , 2009, 2009 WRI International Conference on Communications and Mobile Computing.

[6]  Victor C. M. Leung,et al.  Dynamic Frequency Allocation in Fractional Frequency Reused OFDMA Networks , 2008 .

[7]  Ilenia Tinnirello,et al.  Performance Study of IEEE 802.11 DCF and IEEE 802.11e EDCA , 2007 .

[8]  J. J. Garcia-Luna-Aceves,et al.  Delay analysis of IEEE 802.11 in single-hop networks , 2003, 11th IEEE International Conference on Network Protocols, 2003. Proceedings..

[9]  Tao Tang,et al.  Cross-Layer Handoff Design in MIMO-Enabled WLANs for Communication-Based Train Control (CBTC) Systems , 2012, IEEE Journal on Selected Areas in Communications.

[10]  Tao Tang,et al.  Research on the influence of communication delay on safety location of train in communication based train control (CBTC) , 2009, 2009 IEEE Intelligent Vehicles Symposium.

[11]  Geoffrey Ye Li,et al.  Cross-layer optimization for OFDM wireless networks-part I: theoretical framework , 2005, IEEE Trans. Wirel. Commun..

[12]  Michael O. Odetayo,et al.  Estimation of Medium Access Control Layer Packet Delay Distribution for IEEE 802.11 , 2014, ArXiv.

[13]  Bhupendra Singh,et al.  Performance improvement of communication based high speed train control system with packet drops during handover under worst case scenario , 2017, 2017 7th International Conference on Cloud Computing, Data Science & Engineering - Confluence.

[14]  Xiaoxin Qiu,et al.  On the performance of adaptive modulation in cellular systems , 1999, IEEE Trans. Commun..

[15]  V. Vitsas,et al.  Throughput and delay analysis of IEEE 802.11 protocol , 2002, Proceedings 3rd IEEE International Workshop on System-on-Chip for Real-Time Applications.

[16]  José Soler,et al.  Radio Communication for Communications-Based Train Control (CBTC): A Tutorial and Survey , 2017, IEEE Communications Surveys & Tutorials.