Capacity Estimation for Cellular LTE Using AMR Codec with Semi-persistent Scheduling

Conference paper
Part of the Advances in Intelligent Systems and Computing book series (AISC, volume 308)

Abstract

Long-term evolution (LTE) network is a fully IP-based and does not include a circuit-switched domain for voice communication as known from GSM and UMTS networks. Continuous switching from active to inactive state is one of the challenging tasks for VoIP in LTE. Because of these switching and retransmissions, control channels come into function. Control channel is one of the major limitations for capacity in VoIP. In this paper, we analyzed different scheduling techniques to reduce the number of control channels in the network. We estimated the maximum number of LTE users can be supported over enhanced node B (eNodeB) using different bandwidth levels. From the numerical results, we observed that AMR codec with semi-persistent scheduling scheme is utilizing less number of control channels and accommodates more number of users.

Keywords

LTE 3GPP TTI VoIP AMR 

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Copyright information

© Springer India 2015

Authors and Affiliations

  1. 1.Department of Computer Science and EngineeringIIIT BhubaneswarBhubaneswarIndia

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