Abstract
Due to the popularity of the IEEE 802.11-based LANs and fast development of the IEEE 802.16e MANs, we can expect a heterogeneous network consisting of 802.11-based and 802.16e networks in the near future. In such an environment, heterogeneous handoff is possible. How to keep guaranteeing the handoff connection its QoS demand, and in the meantime, avoid impacting on other connections is a challenge to support real-time applications in a heterogeneous network. In this paper, we develop a heterogeneous network in NS-2 simulator. In addition, we implement application mapping function, call admission control, and scheduling in this heterogeneous network to observe the QoS performance of a handoff connection. The simulation results show that our implemented modules support handoff connections’ QoS demands in respect of throughput, and delay. In addition, the implemented call admission control algorithm reduces the blocking rate efficiently.
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IEEE Std. 802.11e-2005, IEEE Standard for Telecommunications and Information Exchange Between Systems-LAN/MAN Specific Requirements-Part 11: Wireless LAN Medium Access Control (MAC) and physical layer (PHY) specifications: Medium Access Control (MAC) Enhancements for Quality of Service (QoS) (2005)
IEEE 802.16e/D5-2004, IEEE Standard for Local and Metropolitan Area Networks-Part 16: Air Interface for Fixed Broadband Wireless Access Systems-Amendment for Physical and Medium Access Control Layers for Combined Fixed and Mobile Operation in Licensed Bands (September 18, 2004)
NS-2 simulator, http://www.isi.edu/nsnam/ns/
Jiang, C.-H., Tsai, T.-C.: Token bucket based CAC and packet scheduling for IEEE 802.16 broadband wireless access networks. In: IEEE CCNC 2006, pp. 183–187 (2006)
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© 2007 Springer-Verlag Berlin Heidelberg
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Ho, CY., Chao, HL. (2007). An Implementation of QoS Framework for Heterogeneous Networks. In: Denko, M.K., et al. Emerging Directions in Embedded and Ubiquitous Computing. EUC 2007. Lecture Notes in Computer Science, vol 4809. Springer, Berlin, Heidelberg. https://doi.org/10.1007/978-3-540-77090-9_21
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DOI: https://doi.org/10.1007/978-3-540-77090-9_21
Publisher Name: Springer, Berlin, Heidelberg
Print ISBN: 978-3-540-77089-3
Online ISBN: 978-3-540-77090-9
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