An innovative channel management strategy for highly reliable handoff in cellular networks
✍ Scribed by Seung S. Hong; Tai M. Chung
- Publisher
- John Wiley and Sons
- Year
- 2002
- Tongue
- English
- Weight
- 232 KB
- Volume
- 15
- Category
- Article
- ISSN
- 1074-5351
- DOI
- 10.1002/dac.546
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✦ Synopsis
Abstract
In this paper, we have resolved the problem of forced call termination that occurs when mobile traffic is concentrated on a hot‐spot cell in cellular networks. Enhanced Channel Management Scheme (ECMS) is an innovative way to increase the flexibility of channel usage over non‐uniform traffic distribution. ECMS exploits mobile hosts initiated or active in overlapping areas between cells. The scheme consists of three phases to monitor the status of channels on each base station and to make a channel reservation using the availability list maintained for the candidate‐MH selection. When the traffic load in a cell is intolerably high, ECMS invokes the load‐balancing procedure to distribute its traffic to adjacent cells. The reserved channels are used to support the safe and fast handoff. From the simulation, we observed that ECMS outperformed other compatible channel assignment schemes such as directed handoff schemes in blocking probability and channel utilization. Copyright © 2002 John Wiley & Sons, Ltd.