Open Access Open Access  Restricted Access Subscription or Fee Access

Minimization of Handoff Latency by Cell Sectoring Method

Debabrata Sarddar, Shubhajeet Chatterjee, Ramesh Jana, Shaik Sahil Babu, Utpal Biswas, M.K. Naskar


Presently, IEEE 802.11 based wireless local area networks (WLAN) have been widely deployed for business and personal applications. The main issue regarding wireless network technology is handoff or hand over management. When a mobile station (MS) moves outside the range of its current access point (AP) it needs to perform a link layer handover. This causes data loss and interruption in communication. According to IEEE 802.11 link layer2 (L2) handoff performed in three phases – scanning, authentication and re-association. Scanning process causes 90% of the total handoff delay. Throughout the last few years so many researches had been done to reduce the hand off delay.Here we propose a new scanning technique in which we divide a cell in three sectors and thus reducing the number of APs to be scanned by fixing the neighbour APs with respect to each sector. This process effectively reduces the handoff latency.


IEEE 802.11, Handoff Latency, GPS (Global Positioning System), Regression, Neighbor APs.

Full Text:



Yi-Bing Lin Imrich Chalmatc, “Wireless and Mobile Network Architectures,” pp. 17.

AKYILDIZ, I. F., XIE, J., and MOHANTY, S., "A survey on mobility management in next generation all-IP based wireless systems," IEEE Wireless Communications, vol. 11, no. 4, pp. 16-28, 2004.

STEMM, M. and KATZ, R. H., "Vertical handoffs in wireless overlay networks," ACM/Springer Journal of Mobile Networks and Applications(MONET), vol. 3, no. 4, pp. 335-350, 1998.

Jaeyoung Choi Student Member, IEEE, Taekyoung Kwon & Yanghee Choi, Senior Member IEEE, Sangheon Pack Member, , IEEE,Fast Handoff Support in IEEE 802.11 Wireless Networks.[5] Arunesh Mishra, Minho Shin & William Arbaugh, An Empirical Analysis of the IEEE 802.11 MAC Layer Handoff Process. [Anshuman Singh Rawat & Henning Schulzrinne Reducing MAC Layer Handoff Latency in IEEE 802.11 Wireless LANs.

Sangho Shin, Andrea G. Forte, Context Caching using Neighbor Graphs for Fast Handoffs in a Wireless Network.

Sangho Shin, Andrea G. Forte, Context Caching using Neighbor Graphs for Fast Handoffs in a Wireless Network.

S. Park and Y. Choi Pre-authenticated fast handoff in a public wireless LAN based on IEEE802.1x mode IFIP TC6 Personal Wireless Communications. Singapore, October 2002.

Jin Teng, Changqing Xu, Weijia Jia, Dong Xuan, D-scan: Enabling Fast and Smooth Handoffs in AP-dense802.11 Wireless Networks.

Chien-Chao Tseng, K-H Chi, M-D Hsieh & H-H Chang, Location-based Fast Handoff for 802.11 Networks. IEEE COMMUNICATIONS LETTERS, VOL9, NO 4 April 2005.

S.Kyriazakos, D. Drakoulis, G.Karetsos, Optimization of the Handover Algorithm based on the Position of the Mobile Terminals. Proceedings of Symposium on Communications and Vehicular Technology, October 2000.

In-Su Yoon, Sang-Hwa Chung, and Tae-Hoon Kim, A fast handover method for IEEE802.11 wireless networks using combined GPS and SNR

J. Pesola & S. Pokanen , Location-aided Handover in Heterogeneous Wireless Networks. in Proceedings of Mobile Location Workshop, May2003.

Jan Eric Hakegard, Multi-Cell WLAN Coverage and Capacity.


  • There are currently no refbacks.

Creative Commons License
This work is licensed under a Creative Commons Attribution 3.0 License.