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HCFA: Hybrid Coupled Flat Architecture for QoS Enhancement of Multimedia Applications in Mobile WiMAX Broadband Access Network

International Journal of Computer Applications
Foundation of Computer Science (FCS), NY, USA
Year of Publication: 2016
K. Chandrakala, D. Saraswady

K Chandrakala and D Saraswady. HCFA: Hybrid Coupled Flat Architecture for QoS Enhancement of Multimedia Applications in Mobile WiMAX Broadband Access Network. International Journal of Computer Applications 148(13):31-37, August 2016. BibTeX

	author = {K. Chandrakala and D. Saraswady},
	title = {HCFA: Hybrid Coupled Flat Architecture for QoS Enhancement of Multimedia Applications in Mobile WiMAX Broadband Access Network},
	journal = {International Journal of Computer Applications},
	issue_date = {August 2016},
	volume = {148},
	number = {13},
	month = {Aug},
	year = {2016},
	issn = {0975-8887},
	pages = {31-37},
	numpages = {7},
	url = {},
	doi = {10.5120/ijca2016911303},
	publisher = {Foundation of Computer Science (FCS), NY, USA},
	address = {New York, USA}


Worldwide Interoperability for Microwave Access (WiMAX) is the fourth generation (4G) core technology based on the IEEE 802.16 family. The challenge in the coming years for mobile networks will be to offer high bitrates data services to customers in mobility. Future mobile architectures are being standardized to offer mobility between heterogeneous access technologies. The design of these architectures does not take into account the scalability requirement since they are centralized with many network levels and dependency. Existing and future generations of wireless technologies are competition for providing seamless computing solutions using mobility management. To perform fast and seamless handovers for efficient data transfer there is a need for good mobility and session management framework. The high latency and high cost are the major drawback of a centralized high speed 3G/4G network. On the other hand, flat architecture of 3G/4G does not support high speed mobility even though it provides less latency. This paper proposes a novel architectural design using the entity, namely adaptive convergence router (ACR) for both low latency and seamless mobility which is introduced in the existing WiMAX flat architecture. It stores information and simultaneously checks for resource availability and handoff control for every second and maintains the database, and adaptively controls the session handoff with better QoS. The mobile station sends resource request message to the ACR and it grants recourses according to the available bandwidth. So according to the proposed novel architecture, users can share three simultaneous paths according to their needs. The real time users can use centralized path, non real time users can share flat architecture path and combined hybrid path can be used for multimedia users. This mechanism provides load sharing and reduces the congestion so that less latency with seamless mobility can be achieved. The performance of the proposed architecture is evaluated through simulation by using OPNET modeler considering the metrics like throughput and delay


  1. IEEE 802.16e-2005: IEEE Standard for Local and Metropolitan Area Networks-Part 16: Air Interface for Fixed and Mobile Broadband Wireless Access Systems
  2. Ed Agis et. Global, Interoperable Broadband Wireless Networks: Extending WiMAX Technology to Mobility. Intel Technology Journal,8(3):173-187, 2004.
  3. IEEE 802.16-2004: IEEE Standard for Local and Metropolitan Area Networks-Part 16: Air Interface for Fixed Broadband Wireless Access Systems.
  4. Sayan Kumar Ray and Harsha irisena.”Handover in Mobile WiMAX Networks”The State of Art and Research Issues,” IEEE Communications Letters, vol. 12, no. 3, 2010.
  5. R. Q. Huet al. “On the Evolution of Handoff management and Network Architecture in WiMAX.” In Proc. IEEE Mobile WiMAX Symposium, pages 144-149, Florida, USA, 25-29 March 2007.
  6. Semin Sim and Seung-Jae han, “Seamless IP Mobility Support for Flat Architecture Mobile WiMAX Networks”Tavel, P. 2007 Modeling and Simulation Design. AK Peters Ltd.
  7. K. Daoud, P. Herbelin, K. Guillouard, and N. Crespi, “Performance and Implementation of UFA: a SIP-based Ultra Flat Mobile Network Architecture,” in Proceedings of PIMRC 2009, Tokyo, Japan, September 13–16, 2009, pp. 1–6
  8. Zong-Hua Liu and Jyh-Cheng Chen, “Design and Analysis of the Gateway Relocation and Admissionthe is Control Algorithm in Mobile WiMAX Networks”, IEEE Transactions on Mobile Computing, vol. 11, no. 1, pp. 5-18, January 2012.
  9. Ji Hoon Lee, Sangheon Pack, Taekyoung Kwon and Yanghee Choi, “Reducing Handover Delay by Location Management in Mobile WiMAX Multicast and Broadcast Services”, IEEE Transactions on Vehicular Technology, vol. 60, no. 2, pp. 605-617, February 2011.
  10. N. Saxena and A. Roy, “Novel framework for proactive handover with seamless multimedia over WLANs,” IET Commun., vol. 5, no. 9,pp. 1204–1212, Jun. 2011.
  11. Ray S K, Pawlikowski K, and Sirisena H, A Fast MAC-Layer Handover for an IEEE 802.16e-Based WMAN, AccessNets, Chonggang Wang,Ed.: Springer Berlin Heidelberg, 2009, vol. 6, pp. 102-117
  12. Hamdy M, Abdel-Rahman A S, Semary N, Evaluation of Mobile WiMAX IEEE802.16e Handover Load Balancing Trends, The 9thInternational Conference on Informatics and Systems (INFOS2014), December 2014,pp. CNs-25-31
  13. Khatkar A, Singh Y, and Nandal V, A QoS Oriented Analysis of ertPS, rtPS and nrtPS flows in WiMAX, International Journal of Advanced Research in Computer Science and Software Engineering, vol. 3, no. 7, July 2013, pp. 85-90.
  14. D. Lee, D. Won, M. Piran, and D. Suh, “Reducing handover delays for seamless multimedia service in IEEE 802.11 networks,” Electron. Lett., vol. 50, no. 15, pp. 1100–1102, Jul. 2014.


MWiMAX, mobility, scalability, flat architecture, QoS