End-to-End QoS Improvement of HSDPA End-User Multi-Flow Traffic Using RAN Buffer Management

Date

2008-11

Advisors

Journal Title

Journal ISSN

ISSN

Volume Title

Publisher

IEEE

Type

Conference

Peer reviewed

Yes

Abstract

High speed downlink packet access (HSDPA) was introduced to UMTS radio access segment to provide higher capacity for new packet switched services. As a result, packet switched sessions with multiple diverse traffic flows such as concurrent voice and data, or video and data being transmitted to the same user are a likely commonplace cellular packet data scenario. In HSDPA, radio access network (RAN) buffer management schemes are essential to support the end-to-end QoS of such sessions. Hence in this paper we present the end-to-end performance study of a proposed RAN buffer management scheme for multi-flow sessions via dynamic system-level HSDPA simulations. The scheme is an enhancement of a time-space priority (TSP) queuing strategy applied to the node B MAC-hs buffer allocated to an end user with concurrent real-time (RT) and non-real-time (NRT) flows during a multi-flow session. The experimental multi- flow scenario is a packet voice call with concurrent TCP-based file download to the same user. Results show that with the proposed enhancements to the TSP-based RAN buffer management, end-to-end QoS performance gains accrue to the NRT flow without compromising RT flow QoS of the same end user session.

Description

Keywords

3.5 G cellular network, High Speed Downlink Packet Access, buffer management, radio access network, resource allocation, QoS, end-to-end Quality of Service

Citation

Yerima, S. Y. and Al-Begain, K. (2008) End-to-End QoS Improvement of HSDPA End-User Multi-Flow Traffic Using RAN Buffer Management. In: Proceedings of 2008 IEEE/IFIP New Technologies, Mobility and Security (NTMS),

Rights

Research Institute

Cyber Technology Institute (CTI)