Cross-layer enhanced real-time packet scheduling over CDMA networks

Hui Chen, Chun Bun Henry Chan, Victor C M Leung

Research output: Chapter in book / Conference proceedingConference article published in proceeding or bookAcademic researchpeer-review

1 Citation (Scopus)

Abstract

Most existing scheduling algorithms for real-time traffic in code division multiple access (CDMA) networks bound the bit error rate (BER) in order to guarantee the packet error rate (PER) of each packet. However, there is a tradeoff between PER and the packet drop rate (PDR) caused by delay violations, i.e., by slightly degrading the PER, more packets can be sent thus lowering PDR This paper defines a new problem for scheduling real-time traffic in time division multicode CDMA networks, which optimizes the PER and PDR jointly across the physical and link layers. These two metrics make up the total packet loss ratio (PLR). A novel cross-layer enhanced real-time packet scheduling algorithm is proposed to optimize the PLR experienced by each user in each frame, and distribute it fairly between users over the long term. Simulation results show that the proposed algorithm provides fairness in packet losses among users of different traffic classes, and achieves superior performance over previous algorithms in reducing PLR and increasing system capacity.
Original languageEnglish
Title of host publicationProceedings - 2006 IEEE International Conference on Networks, ICON 2006 - Networking-Challenges and Frontiers
Pages243-248
Number of pages6
Volume1
DOIs
Publication statusPublished - 1 Dec 2006
Event2006 IEEE International Conference on Networks, ICON 2006 - Networking-Challenges and Frontiers - Singapore, Singapore
Duration: 13 Sep 200615 Sep 2006

Conference

Conference2006 IEEE International Conference on Networks, ICON 2006 - Networking-Challenges and Frontiers
Country/TerritorySingapore
CitySingapore
Period13/09/0615/09/06

ASJC Scopus subject areas

  • Computer Networks and Communications
  • Communication

Cite this