NDLI: Mobile Velocity Based Bidirectional Call Overflow Scheme in Hierarchical Cellular System

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Mobile Velocity Based Bidirectional Call Overflow Scheme in Hierarchical Cellular System

Content Provider	CiteSeerX
Author	Mir, G. M. Shah, N. A.
Abstract	Abstract—In the age of global communications, heterogeneous networks are seen to be the best choice of strategy to ensure continuous and uninterruptible services. This will allow mobile terminal to stay in connection even they are migrating into different segment coverage through the handoff process. With the increase of teletraffic demands in mobile cellular system, hierarchical cellular systems have been adopted extensively for more efficient channel utilization and better QoS (Quality of Service). This paper presents a bidirectional call overflow scheme between two layers of microcells and macrocells, where handoffs are decided by the velocity of mobile making the call. To ensure that handoff calls are given higher priorities, it is assumed that guard channels are assigned in both macrocells and microcells. A hysteresis value introduced in mobile velocity is used to allow mobile roam in the same cell if its velocity changes back within the set threshold values. By doing this the number of handoffs is reduced thereby reducing the processing overhead and enhancing the quality of service to the end user. Keywords—Hierarchical cellular systems, hysteresis, overflow, threshold. I.
File Format	PDF
Access Restriction	Open
Subject Keyword	Guard Channel Handoff Process Hysteresis Value Set Threshold Value Hierarchical Cellular System Handoff Call Mobile Roam Heterogeneous Network Bidirectional Call Overflow Scheme Mobile Cellular System Uninterruptible Service Teletraffic Demand Mobile Velocity Efficient Channel Utilization Mobile Terminal Keywords Hierarchical Cellular System Different Segment Coverage Velocity Change Processing Overhead Global Communication
Content Type	Text
Resource Type	Article

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