Quality of Service Control for WLAN-based Converged Personal Network Service


  • Eun-Chan Park Department of Information and Communication Engineering, Dongguk University-Seoul, Korea
  • Bongkyo Moon Department of Information and Communication Engineering, Dongguk University-Seoul, Korea
  • In-Hwan Kim Mobile Device Development Team, SK Telecom, Seoul, Korea
  • Gu-Min Jeong School of Electrical Engineering, Kookmin University, Seoul, Korea


CPNS, QoS, fairness, WLAN, TCP


This paper proposes a framework for quality of service (QoS) control in WLAN-based converged personal network service (CPNS). First, we show that the CPNS devices in WLANs occupy the shared wireless channel in an unfair manner; and thus, QoS is degraded. The reasons of such problem are analyzed from two viewpoints of (i) channel access mechanism according to carrier sensing multiple access protocol of WLAN and (ii) TCP congestion control mechanism in response to packet loss. To improve QoS and assure fair channel sharing, we propose an integrated QoS control framework consisting of admission control and rate control. Based on the available capacity, the admission control determines whether or not a specific QoS service can be admitted. The rate control is implemented using congestion window control or token bucket algorithm. The proposed mechanism differentiates QoS service from best-effort (BE) service such that the QoS service is preferentially served to satisfy its QoS requirements and the BE service is served to share the remaining resource in a fair manner. The extensive simulation results confirm that the proposed scheme assures QoS and fair channel sharing for WLAN-based CPNS.


Open Mobile Alliance, Converged Personal Network Service Architecture Candidate Version 1.0, OMA-AD-CPNS-V1_0-20100615-C, Jun 2010.

Open Mobile Alliance, Converged Personal Network Service Requirements, Candidate Version 1.0, OMA-RD-CPNS-V1_0-20091117-C, Nov. 2009.

IEEE 802.11 Working Group, Part 11: Wireless LAN medium access control (MAC) and physical layer (PHY) specification, IEEE Std 802.11-2007, June 2007.

The Network Simulator, ns-2, http://www.isi.edu/nsnam/ns/

IEEE 802.11 Working Group, Part 11: Wireless LAN medium access control (MAC) and physical layer (PHY) specification, Amendment 8: Medium Access Control (MAC) Quality of Service Enhancements IEEE Std 802.11e-2005, Nov. 2005.

I. Aad and C. Castelluccia, Differentiation Mechanisms for IEEE 802.11, in Proc. of IEEE INFOCOM, 209-218, 2001. http://dx.doi.org/10.1109/infcom.2001.916703

Q. Ni, L. Romdhani, and T. Turletti, A Survey of QoS Enhancements for IEEE 802.11 Wireless LAN, Wiley Journal of Wireless Communication and Mobile Computing, 4(5):547- 566, 2004. http://dx.doi.org/10.1002/wcm.196

H. Zhu, M. Li, I. Chlamtac, and B. Prabhakaran, A survey of Quality of Service in IEEE 802.11 Networks, IEEE Wireless Communications, 11(4):6-14, 2004. http://dx.doi.org/10.1109/MWC.2004.1325887

T. Nandagopal, T.-E. Kim, X. Gao, and V. Bharghavan, Achieving MAC Layer Fairness in Wireless Packet Networks, in Proc. of ACM MobiCom, 87-98, 2000. http://dx.doi.org/10.1145/345910.345925

D. Qiao and K.G. Shin, Achieving Efficient Channel Utilization and Weighted Fairness for Data Communications in IEEE 802 WLAN under the DCF, in Proc. of Int. Workshop Quality of Service (IWQoS), 227-236, 2002.

M. Bottigliengo, C. Casetti, C.-F. Chiasserini, and M. Meo, Smart Traffic Scheduling in 802.11 WLANs with Access Point, in Proc. IEEE Vehicular Technology Conf.-Fall (VTC03), 2227-2231, 2003.

S. Kim, B.-S. Kim, and Y. Fang, Downlink and Uplink Resource Allocation in IEEE 802.11 Wireless LANs, IEEE Trans. Vehicular Technology, vol. 54, no. 1, pp. 320-327, Jan. 2005. http://dx.doi.org/10.1109/TVT.2004.838887

S. Pilosof, R. Ramjee, D. Raz, Y. Shavitt, and P. Sinha, Understanding TCP Fairness over Wireless LAN, in Proc. of IEEE INFOCOM, pp. 863-872, 2003. http://dx.doi.org/10.1109/infcom.2003.1208924

Y. Wu, Z. Niu, and J. Zheng, Study of the TCP Upstream/Downstream Unfairness Issue with Per-Flow Queuing over Infrastructure-Mode WLANs, Wireless Comm. and Mobile Computing, vol. 5, no. 4, pp. 459-471, 2005. http://dx.doi.org/10.1002/wcm.303

D.J. Leith, P. Clifford, D. Malone, and A. Ng, TCP Fairness in 802.11e WLANs, IEEE Communications Letters, vol. 9, no. 11, pp. 964-966, 2005. http://dx.doi.org/10.1109/LCOMM.2005.11004

S. Choi, K. Park, and C. Kim, Performance Impact of Inter-Layer Dependence in Infrastructure WLANs, IEEE Trans. Mobile Computing, vol. 5, no. 7, pp. 829-845, 2006. http://dx.doi.org/10.1109/TMC.2006.102

F. Calì, M. Conti, E. Gregori, Dynamic Tuning of the IEEE 802.11 Protocol to Achieve a Theoretical Throughput Limit, IEEE Trans. on Networking, vol. 8, no. 6, pp. 785-799, Dec. 2000. http://dx.doi.org/10.1109/90.893874

A. Kamerman and L. Monteban, WaveLAN-II: A High-performance wireless LAN for the unlicensed band, Bell Lab Technical Journal, pp. 118-133, 1997.

J. Choi, K. Park, and C.-K. Kim, Analysis of Cross-Layer Interaction in Multirate 802.11 WLANs, IEEE Trans. on Mobile Computing, vol. 8, no. 5, pp. 682-693, May 2009. http://dx.doi.org/10.1109/TMC.2008.166

G. Bianchi, Performance Analysis of the IEEE 802.11 Distributed Coordination Function, IEEE Journal on Selected Areas in Communications, vol. 18, no. 3, pp. 535-547, March 2000. http://dx.doi.org/10.1109/49.840210



Most read articles by the same author(s)

Obs.: This plugin requires at least one statistics/report plugin to be enabled. If your statistics plugins provide more than one metric then please also select a main metric on the admin's site settings page and/or on the journal manager's settings pages.