Power-efficient and QoS-aware scheduling in Bluetooth scatternet for wireless PANs

Yang Ick Joo, Tae Jin Lee, Doo Seop Eom, Yeonwoo Lee, Kyun Hyon Tchah

Research output: Contribution to journalArticle

8 Citations (Scopus)

Abstract

In this paper, we propose a power-efficient and QoS (Quality of Service)-aware MAC (Medium Access Control) scheduling algorithm for Bluetooth scatternet. If the inter-piconet scheduler in a bridge node between piconets operates simply by the Round Robin (RR) policy, a number of time slots may be wasted due to the guard time for piconet switching and the exchange of POLL-NULL packets. To overcome the link wastage problem in Bluetooth scatternet scheduling, several algorithms have recently been proposed. Although they can provide all of the links of a bridge node with fair service opportunities, they may cause waste of wireless resources since different Bluetooth devices may have various traffic characteristics. In addition, since Bluetooth devices are often required to operate under limited battery capacity, the number of unnecessary piconet switching has to be minimized for the power-efficient operation of a Bluetooth scatternet. Therefore, we propose a mechanism to support the power-efficient operation of a Bluetooth scatternet while guaranteeing various QoS requirements of Bluetooth devices. The proposed algorithm is compliant with the current Bluetooth specification, and we demonstrate its improved performance via simulations.

Original languageEnglish
Pages (from-to)1067-1072
Number of pages6
JournalIEEE Transactions on Consumer Electronics
Volume49
Issue number4
DOIs
Publication statusPublished - 2003 Nov

Keywords

  • Bluetooth
  • QoS
  • Scatternet
  • Scheduling
  • Wireless personal area networks

ASJC Scopus subject areas

  • Media Technology
  • Electrical and Electronic Engineering

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