Effects of mobility on reliable transport protocols

Ramon Caceres, Liviu Iftode

Research output: Contribution to conferencePaperpeer-review

38 Scopus citations

Abstract

We explore the effects of host motion on the performance of active transport-level connections. Motion causes increased delays and packet losses while the network learns how to route data to a host's new location. Transport protocols interpret these delays and losses as signs of network congestion. They consequently throttle their transmissions, further degrading performance. We quantify this degradation through measurements of protocol behavior in a wireless networking testbed. We show how current retransmission policies introduce unacceptably long pauses in communication (800 milliseconds and longer), and propose a fast retransmissions scheme that can reduce these pauses to levels more suitable for human interaction (200 milliseconds). Our work demonstrates that reliable transport protocols must be made aware of mobility, and suggests how to adapt these protocols to mobile computing environments.

Original languageAmerican English
Pages12-20
Number of pages9
StatePublished - 1994
Externally publishedYes
EventProceedings of the 1994 IEEE 14th International Conference on Distributed Computing Systems - Poznan, Pol
Duration: Jun 21 1994Jun 24 1994

Other

OtherProceedings of the 1994 IEEE 14th International Conference on Distributed Computing Systems
CityPoznan, Pol
Period6/21/946/24/94

ASJC Scopus subject areas

  • Software
  • Hardware and Architecture
  • Computer Networks and Communications

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