[1] Chen Geng, Xia Weiwei, Xu Bo, Shen Lianfeng, et al. A priority-based dynamic load transfer algorithmfor cellular/WLAN integrated networks [J]. Journal of Southeast University (English Edition), 2012, 28 (1): 14-20. [doi:10.3969/j.issn.1003-7985.2012.01.003]

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A priority-based dynamic load transfer algorithmfor cellular/WLAN integrated networks()

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Journal of Southeast University (English Edition)[ISSN:1003-7985/CN:32-1325/N]

Volumn:

28

Issue:

2012 1

Page:

14-20

Research Field:

Information and Communication Engineering

Publishing date:

2012-03-30

Info

Title:

A priority-based dynamic load transfer algorithmfor cellular/WLAN integrated networks

Author(s):

Chen Geng¹;  Xia Weiwei¹;  Xu Bo²;  Shen Lianfeng¹

¹National Mobile Communications Research Laboratory, Southeast University, Nanjing 210096, China
² Institute of Communications Engineering, PLA University of Science and Technology, Nanjing 210016, China

Keywords:

cellular network;  WLAN;  dynamic load transfer;  blocking probability;  Markov model

PACS:

TN915

DOI:

10.3969/j.issn.1003-7985.2012.01.003

Abstract:

For the integration network of a cellular network and a wireless local area network(WLAN), a priority-based dynamic load transfer(PDLT)algorithm is proposed. The dynamic vertical handoffs by call admission control are jointly determined by the network conditions and the traffic characteristics in combination with the location-condition of mobile terminals. When there is no bandwidth resource available in the cellular network or WLAN, the proposed PDLT algorithm allows an incoming voice call or data call within the overlapping area of the cellular network and the WLAN to be directed to the spare network; meanwhile, by dynamically computing the occupancy of the bandwidth resource, the proposed PDLT algorithm also allows an ongoing voice call or data communication to be transferred to the network with a sufficient bandwidth resource according to the given threshold to balance the number of voice/data calls in the two networks. The analysis results of a two-dimensional Markov model and the simulation results show that the PDLT algorithm can effectively enhance the whole integrated network’s traffic, reduce the blocking probability of new calls and increase the data throughput, and thus decrease the response time for various services.

References:

[1] Falowo O E. Joint call admission control algorithm for reducing call blocking/dropping probability in heterogeneous wireless networks supporting multihoming[C]//2010 IEEE Globecom Workshops. Miami, FL, USA, 2010: 611-615.
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[9] Kuo Y L, Lu C H, Wu E H K, et al. An admission control strategy for differentiated services in IEEE 802.11[C]//GLOBECOM’03: IEEE Global Telecommunications Conference. San Francisco, CA, USA, 2003:707-712.
[10] Song W, Jiang H, Zhuang W H. Performance analysis of the WLAN-first scheme in cellular/WLAN interworking[J]. IEEE Transactions on Wireless Communications, 2007, 6(5): 1932-1943.
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Memo

Memo:

Biographies: Chen Geng(1984—), male, graduate; Shen Lianfeng(corresponding author), male, professor, lfshen@seu.edu.cn.
Foundation items: The National Science and Technology Major Project(No.2011ZX03005-004-03), the National Natural Science Foundation of China(No.61171081), the Research Fund of the National Mobile Communications Research Laboratory of Southeast University(No. 2011A08).
Citation: Chen Geng, Xia Weiwei, Xu Bo, et al.A priority-based dynamic load transfer algorithm for cellular/WLAN integrated networks.[J].Journal of Southeast University(English Edition), 2012, 28(1):14-20.[doi:10.3969/j.issn.1003-7985.2012.01.003]

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