Browse > Article
http://dx.doi.org/10.9728/dcs.2013.14.4.429

A Study on QoS Routing Performance Enhancement by using LSQR Scheduling in WiMAX Mesh Networks  

Tak, Wooyoung (경희대학교 대학원 컴퓨터공학과)
Lee, Gowoon (경희대학교 대학원 컴퓨터공학과)
Joh, Hangki (경희대학교 대학원 컴퓨터공학과)
Ryoo, Intae (경희대학교 컴퓨터공학과)
Publication Information
Journal of Digital Contents Society / v.14, no.4, 2013 , pp. 429-437 More about this Journal
Abstract
Recently, wireless mesh network has been focused as a core technology for resolving the issues of shadow zone and distributed bypass route as it has broad service coverage as well as good scalability features. It, however, provides users with relatively lower QoS than infrastructure-based networks. In order for addressing this QoS issue and also enhancing the routing performance of mobile WiMax mesh network, this paper proposes a load sensing QoS routing (LSQR) scheme. In the proposed LSQR, each node figures out network congestion status and selects a bypass route accordingly. With this scheme, we can expect good load balancing effect by changing the routing paths from centralized links to distributed links under a heavy traffic condition. From the simulation results using NS-2, it has been verified that the LSQR shows lower packet loss rates and data transmission delays than the existing representative routing schemes.
Keywords
LSQR; Scheduling; QoS; WiMax; Mesh Network;
Citations & Related Records
연도 인용수 순위
  • Reference
1 Jae-Sung Roh, Hwi-Jin Ye, "A Study on the Performance of Home Embedded System Using a Wireless Mesh Network ," Digital Contents Society, vol. 8, no.3, pp. 323-328, 2007.
2 IEEE 802.16, "IEEE Standard for Local and Metropolitan Area Networks Part 16: Air Interface for Fixed and Mobile Broadband Wireless Access Systems Amendment 2: Physical and Medium Access Control Layers for Combined Fixed and Mobile Operation in Licensed Bands and Corrigendum 1," 2006.
3 Alasti, M., Neekzad, B,, Jie Hui, Vannithamby, R,"Quality of Service in WiMAX and LTE Networks", IEEE Communications Magazine, Vol.48 Issue.5, May 2010, pp.104-111.
4 Ian Akyildiz, Xudon Wang, Weilin Wang, "Wireless Mesh Networks: A Survey," Elsevier Computer Networks, Vol. 47, No. 4, pp.445-487, Mar. 2005.   DOI   ScienceOn
5 H. Badis and K. A. Agha, "Quality of Service for Ad Hoc Optimized Link State Routing Protocol," IETF Draft, draft-badis-manet-qolsr- 05.txt, March 2007.
6 T. Clausen et al., "Optimized Link State Routing Protocol," IETF MANET RFC 3626, Oct., 2003.
7 Kuran M. S., Gur G., Tugcu T., Alagoz F., "Application of the Cross-Layer Paradigm for Improving the Performance of WiMAX", IEEE Wireless Commun. vol.17, Issue. 3, pp.86-95. June, 2010.