Multi-rate geographic opportunistic routing in wireless ad hoc networks

Kai Zeng, Wenjing Lou, Yanchao Zhang

Research output: Chapter in Book/Report/Conference proceedingConference contribution

24 Scopus citations


Routing in wireless ad hoc networks is challenging mainly due to unreliable wireless links/channels. Geographic opportunistic routing (GOR) was proposed to cope with the unreliable transmissions by exploiting the broadcast nature and spatial diversity of the wireless medium. Previous studies on GOR has focused on networks with a single channel rate. The capability of supporting multiple channel rates, which is common in wireless systems, has not been carefully studied for GOR. In this paper, we carry out a study on the impacts of multiple rates, as well as candidate selection, prioritization and coordination, on the throughput of GOR. We propose a new local metric, expected one-hop throughput (EOT), to characterize the trade-off between the packet advancement and medium time cost. We further propose a local rate adaptation and candidate selection algorithm to maximize this metric. Simulation results show that the multi-rate GOR (MGOR) incorporating the rate adaptation and candidate selection algorithm efficiently forwards the packet to the destination with higher throughput than the corresponding geographic routing and pure opportunistic routing operating at any single rate. EOT is shown to be a good local metric to achieve high path throughput for MGOR.

Original languageEnglish (US)
Title of host publicationMilitary Communications Conference, MILCOM 2007
StatePublished - 2007
Externally publishedYes
EventMilitary Communications Conference, MILCOM 2007 - Orlando, FL, United States
Duration: Oct 29 2007Oct 31 2007

Publication series

NameProceedings - IEEE Military Communications Conference MILCOM


OtherMilitary Communications Conference, MILCOM 2007
Country/TerritoryUnited States
CityOrlando, FL

ASJC Scopus subject areas

  • Electrical and Electronic Engineering


Dive into the research topics of 'Multi-rate geographic opportunistic routing in wireless ad hoc networks'. Together they form a unique fingerprint.

Cite this