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Two Stage Dropping Scheme Considering Latency of rtPS Class in IEEE 802.16/WiBro System  

Baek, Joo-Young (포항공과대학교 컴퓨터공학과)
Yoon, Jong-Pil (LG전자)
Kim, Sok-Hyong (포항공과대학교 컴퓨터공학과)
Suh, Young-Joo (포항공과대학교 컴퓨터공학과)
Publication Information
Journal of KIISE:Computing Practices and Letters / v.14, no.8, 2008 , pp. 783-787 More about this Journal
Abstract
IEEE 802.16/WiBro, one of the representative Broadband Wireless Access (BWA) systems, defines QoS negotiation between BS and SS and five service classes to guarantee QoS for flows. The five service classes are UGS, ertPS, rtPS, nrtPS, and BE, but the standard does not define how to provide services to flows according to the service classes. Existing research works have been studied about the scheduler architecture to effectively utilize the IEEE 802.16/WiBro systems. These works use the original packet scheduling algorithm for service classes. However, it is necessary to consider bandwidth allocation mechanisms in scheduling algorithms since bandwidth allocation mechanisms are different according to service classes. Especially, bandwidth allocation mechanisms should be considered for the scheduling of rtPS class since rtPS class uses the polling mechanism that takes time to allocate bandwidth and has the minimum latency constraint. Therefore, we propose two stage dropping scheme for rtPS class that is sensitive to latency, and thus it reduces the wasted resources and provides efficient service to rtPS class.
Keywords
IEEE 802.16/WiBro system; rtPS class; latency; dropping; QoS;
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  • Reference
1 Alexander Sayeko, Olli Alanen, Juha Karhla, and Timo Hamalainen, "Ensuring QoS requirements in 802.16 Scheduling," MSWiM, Oct. 2006
2 IEEE 802.16-2006, "IEEE standard for Local and Metropolitan Area Networks - Part 16: Air Interface for Fixed and Mobile Broadband Wireless Access Systems," Feb. 2006
3 G.Nair, J.Chou, T.Madejski, K.Perycz, D.Putzolu and J.Sydir, "IEEE 802.16 medium access control and service provisioning," Intel Technology Journal, Vol.8, No.3, pp. 213-228, 2004
4 G.Nair, J.Chou, T.Madejski, K.Perycz, D.Putzolu and J.Sydir, "IEEE 802.16 medium access control and service provisioning," Intel Technology Journal, Vol.8, No.3, pp. 213-228, 2004
5 IEEE 802.16-2004, "IEEE standard for Local and Metropolitan Area Networks - Part 16: Air Interface for Fixed Broadband Wireless Access Systems," Oct. 2004
6 Dong-Hoon Cho, Jung-Hoon Song, Min-Su Kim, and Ki-Jun Han, "Performance Analysis of the IEEE 802.16 Wireless Metropolitan Area Network," IEEE International Conference on Distributed Frameworks for Multimedia Applications, Feb. 2005