On dynamic packet fragmentation for traffic integration over bandwidth-limited links

  • Authors:

  • Liang Guo;Whay Chiou Lee;Ying-ieh Lin

  • Affiliations:

  • Applied Research and Technology Center, Motorola, 111 Locke Drive, Marlborough, MA 01752, USA.;Applied Research and Technology Center, Motorola, 111 Locke Drive, Marlborough, MA 01752, USA.;Airvana, 19 Alpha Road, Chelmsford, MA 01824, USA

  • Venue:
  • International Journal of Communication Networks and Distributed Systems
  • Year:
  • 2009

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Abstract

We consider a home networking system for integrating packetised isochronous and best-effort traffic over a shared link with limited bandwidth, wherein the isochronous traffic comprises multiple isochronous flows, each associated with a periodic packet arrival process having a constant isochronous packet transmission period. In such a system, best-effort packets of variable size can render it impossible to guarantee QoS of the isochronous traffic. We propose a dynamic packet fragmentation method to integrate isochronous and best-effort traffic. In particular, the method supports packet fragmentation with fixed size or variable size packets. We show that the method effectively increases link utilisation and best-effort traffic throughput, without violating the delay and jitter requirements for isochronous traffic.