Cellular operators are facing difficulties in supporting a huge increment in the subscribers due to spectrum and equipment restrictions. Substantial amount of investigation has been reported in the area of increasing call carrying capacity such as Reuse Partitioning and Directed Retry. However, such action increases the size of the network and results to higher installation, maintenance and optimization costs for the cellular operator. In this paper, a cost effective new channel reservation scheme based on subscribers’ average call duration has been reported. A cell has been considered which has very few allocated channels and is also unable to execute load balancing methods such as channel borrowing, call transfer etc. A cell with such restrictions may have higher blocking probability during busy hours, but the results show that the proposed scheme can effectively reduce the overall call-blocking for such cell. The resulted scheme is particularly useful in a cell having heavy traffic with mostly business calls.

1. Urvashi R Patel and Bhavesh N Gohil, “Cell Identity Assignment Techniques in Cellular Network:A Review,” 3rd IEEE International Conference on Computer Science and Information Technology (ICCSIT), pp. 594-596, 2010.
2. Jayshri Joshi and Girish Mundada, “A Hybrid Channel Allocation Algorithm to Reduce Call blocking probability using Hot-spot Notification,” 5th International Conference on Information and Automation for Sustainability (ICIAFs), pp. 404-410, 2010.
3. Xuming Fang, Changqian Zhu and Pingzhi Fan, “Greedy-Based Dynamic Channel Assignment Strategy for Cellular Mobile Networks,” IEEE Communications Letters, vol. 4, no. 7, pp. 215–217, july 2000.
4. Xue Jun Li and Peter Han Joo Chong, “A Dynamic Channel Assignment Scheme for TDMA-based Multihop Cellular Networks,” IEEE Transactions on Wireless Communications, Vol. 7, No. 6, pp. 1999-2003, June 2008.
5. Christian Hartmann, “Channel Allocation and Handover for The HSCSD Service in SDMA Systems,” 15th IEEE International Symposium on Personal, Indoor and Mobile Radio Communications (PIMRC), Vol. 2, pp. 1486-1490, 2004.
6. T. S. Rappaport, “Wireless communications : principles and practice,” Second Edition, Pearson Education India, ISBN: 9788131728826, 2009.
7. Ahmad Awada, Bernhard Wegmann, Ingo Viering, Anja Klein, “A Game-Theoretic Approach to Load Balancing in Cellular Radio Networks,” IEEE 21st International Symposium on Personal Indoor and Mobile Radio Communications (PIMRC), pp. 1184-1189, 2010.
8. Zexi Yang, and Zhisheng Niu, “A New Relay Based Dynamic Load Balancing Scheme in Cellular Networks,” IEEE 72nd Vehicular Technology Conference Fall (VTC 2010-Fall), pp. 1-5, 2010.
9. Wang Xi-jun, Tian Hui, Jiang Fan, Li Xiang-yan3, Hong Xuan-ji, Li Tai-ri, “Cell-Cluster Based Traffic Load Balancing in Cooperative Cellular Networks,” 7th IEEE Consumer Communications and Networking Conference (CCNC), pp. 1-5, 2010.

Cellular network Call carrying capacity Channel Allocation Estimation of Call Duration