Performance Analysis of Contention-Based Ranging Mechanism for Idle-Mode Mobility
In this paper, the contention performance of message- and code-based initial ranging is investigated for two different scenarios or cases when idle mode is activated at the mobile stations (MSs). First scenario assumes a chosen set of MSs to follow mobility waypoint between the base stations (BSs), while other MSs remain stationary. Second scenario (worst case) presumes that all the MSs served by the BSs follow either mobility waypoint or random waypoint between the BSs. Under these scenarios, during periodic location update, MSs undergo contention-based network re-entry process. When more than one MSs undergo location update, it causes high contention amid MSs. Hence, this paper investigates the contention performance of message- and code-based ranging during periodic network re-entry. Simulations validate that the MSs in worst-case scenario with code ranging perform better in terms of idle-mode energy consumption (57.97 %) and percentage of time in idle mode (68.11 %) than message ranging under Rayleigh fading channel.
KeywordsMedium access control Idle mode Contention ranging
This work is supported in part by Department of Science and Technology (DST), Ministry of Science and Technology (MST), India, under the Innovation in Science Pursuit for Inspired Research (INSPIRE) support program of Assured Opportunity for Research Career (AORC).
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