Abstract
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 language | English (US) |
|---|---|
| Title of host publication | Proceedings - IEEE Military Communications Conference MILCOM |
| DOIs | |
| State | Published - 2007 |
| Externally published | Yes |
| Event | Military Communications Conference, MILCOM 2007 - Orlando, FL, United States Duration: Oct 29 2007 → Oct 31 2007 |
Other
| Other | Military Communications Conference, MILCOM 2007 |
|---|---|
| Country | United States |
| City | Orlando, FL |
| Period | 10/29/07 → 10/31/07 |
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ASJC Scopus subject areas
- Civil and Structural Engineering
- Electrical and Electronic Engineering
Cite this
Multi-rate geographic opportunistic routing in wireless ad hoc networks. / Zeng, Kai; Lou, Wenjing; Zhang, Yanchao.
Proceedings - IEEE Military Communications Conference MILCOM. 2007. 4454897.Research output: Chapter in Book/Report/Conference proceeding › Conference contribution
}
TY - GEN
T1 - Multi-rate geographic opportunistic routing in wireless ad hoc networks
AU - Zeng, Kai
AU - Lou, Wenjing
AU - Zhang, Yanchao
PY - 2007
Y1 - 2007
N2 - 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.
AB - 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.
UR - http://www.scopus.com/inward/record.url?scp=47949093926&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=47949093926&partnerID=8YFLogxK
U2 - 10.1109/MILCOM.2007.4454897
DO - 10.1109/MILCOM.2007.4454897
M3 - Conference contribution
SN - 1424415136
SN - 9781424415137
BT - Proceedings - IEEE Military Communications Conference MILCOM
ER -