Variable Guard Channels for Efficient Traffic Management

Guard channels improve the probability of successful handoffs by reserving a number of channels exclusively for handoffs. This concept has the risk of underutilization of radio spectrum due to the fact that fewer channels are granted to originating calls even if these guard channels are not always used, when originating calls are starving for the want of channels. The penalty is the reduction of total carried traffic. The optimum number of guard channels can help reduce this problem. This paper presents fuzzy logic based guard channel scheme wherein guard channels are reorganized on the basis of traffic density, so that guard channels are provided on need basis. This will help in incorporating more originating calls and hence high throughput of the radio spectrum

Authors:

• G. M. Mir
• N. A. Shah
• Moinuddin

Keywords:

• Free channels
• fuzzy logic
• guard channels
• Handoff

References:

[1] S. Tekinay and B. Jabbari, "A measurement-based prioritization scheme
for handovers in mobile cellular networks," IEEE JSAC, vol. 10, no. 8,
Oct. 1992.
[2] Mikael Gudmundson, "Analysis of Handover Algorithms.", IEEE
Vehicular Technology Conference July 1991, pp537-542
[3] Y-B. Lin, S. Mohan, and A. Noerpel, "Pcs channel assignment strategies
for handoff and initial access," in IEEE Personal Communications, pp.
47-56. 1994.
[4] H. Balakrishnan, S. Seshan, and R. Katz. "Improving reliable transport
and handoff performance in cellular wireless networks", ACM Wireless
Networks Vol. 1, No. 4, December 1995.
[5] R. Guerin, "Queueing-Blocking System with Two Arrival Streams and
Guard Channels," IEEE Trans. Comm., vol. 36, no. 2, pp. 153-163,
1988.
[6] Yan Jian, Vijay K. Bhargava, "Mobility Oriented Guard Channel
Assignment for Personal Communication Systems" IIEEE ICPWC,
1997, pp 15-18.
[7] P. M. Ichan, R. E. Sheriff, Y. F. hu, P. Conferto, C. Tocci, "Mobility
Management incorporating fuzzy Logic for a Heterogeneous IP
environment" IEEE Commun. Mag. Dec. 2001, pp 42-50.
[8] A. S. Acampora and M. Naghshineh, "Control and Quality of Service
Provisioning in High-Speed Micro-Cellular Networks," IEEE Pers.
Commun., vol. 1, 1994.
[9] N. A. Shah, G. M. Mir, Moinuddin "Efficient Guard Channels for
Accommodating More Traffic in Microcellular Mobile Communication"
4th JK Science Congress, Dept. of Science and Technology Govt. of
India, 2008
[10] K.R. Lo, C.J. Chang, C. Chang, and C.B. Shung, "A QoS Guaranteed
Fuzzy Channel Allocation Controller for Hierarchical Cellular
Systems," IEEE Trans. Vehicular Technology, vol. 49, pp. 1588- 1597,
Sept. 2000.
[11] K. Shum and C.W. Sung, "Fuzzy Layer Selection Method in
Hierarchical Cellular Systems," IEEE Trans. Vehicular Technology,
vol. 48, pp. 1840-1849, Nov. 1999.
[12] G. M. Mir, N. A. Shah, "Realization of QoS in Handoffs by hysteresis
using Fuzzy Logic" Journal of Mass Communicator, vol 2, issue 2, pp
13-20, June 2008.
[13] G. M. Mir, N. A. Shah, Moinuddin, "Decentralized Handoff for
Microcellular Mobile Communication System using Fuzzy Logic"
World Acadamy of Science, Engineering and Technology, vol 50, pp
866-870, Feb 2009.
[14] G. M. Mir, Moinuddin, N. A. Shah "Mobile Velocity Based
Bidirectional Call Overflow Scheme in Hierarchical Cellular System"
World Acadamy of Science, Engineering and Technology, vol 58, pp
827-830, Oct 2009.