Analysis of Radio Resource Allocation in LTE Uplink

Safdar Nawaz Khan Marwat, Thushara Weerawardane, Yasir Zaki, Carmelita Goerg, Andreas Timm-Giel

Research output: Contribution to journalArticle

Abstract

Long term evolution (LTE) uses orthogonal frequency division multiple access (OFDMA) and single carrier frequency division multiple access (SC-FDMA) as the downlink and uplink transmission schemes respectively. The Quality of Service (QoS) provision to users is one of the key objectives of the wireless network operators. This paper analyses an uplink LTE radio scheduler, called bandwidth and QoS aware (BQA) scheduler and evaluates its QoS performance. The BQA uplink scheduler is designed to provide efficient and fair allocation of the radio resources to users according to: the QoS of various traffic classes and the instantaneous channel conditions. The scheduler functionality is divided into time domain packet scheduling (TDPS) and frequency domain packet scheduling (FDPS). In this paper, an innovative feature, that is user QoS provisioning with dynamic QoS weights, is employed for the BQA scheduler along with multi-bearer users support. The QoS performance of the BQA scheduler is analyzed in several simulation scenarios using heterogeneous traffic environment. The results show that the BQA scheduler guarantees provision of QoS to users.

Original languageEnglish (US)
Pages (from-to)2305-2322
Number of pages18
JournalWireless Personal Communications
Volume79
Issue number3
DOIs
StatePublished - 2014

Keywords

  • QoS
  • SC-FDMA
  • Scheduling
  • Uplink

ASJC Scopus subject areas

  • Computer Science Applications
  • Electrical and Electronic Engineering

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    Marwat, S. N. K., Weerawardane, T., Zaki, Y., Goerg, C., & Timm-Giel, A. (2014). Analysis of Radio Resource Allocation in LTE Uplink. Wireless Personal Communications, 79(3), 2305-2322. https://doi.org/10.1007/s11277-014-1986-6