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Location-Aided Opportunistic Forwarding in Multirate and Multihop Wireless Networks (2009)
| Content Provider | CiteSeerX |
|---|---|
| Author | Yang, Zhenyu Lou, Wenjing Zeng, Kai |
| Abstract | Abstract—Routing in multihop wireless networks is challeng-ing, mainly due to unreliable wireless links/channels. Geographic opportunistic routing (GOR) was proposed to cope with the un-reliable transmissions by exploiting the broadcast nature of the wireless medium and the spatial diversity of the network topology. Previous studies on GOR have focused on networks with a single channel rate. The capability of supporting multiple channel rates, which is common in current wireless systems, has not carefully been 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 performance of GOR. We propose a new local metric, i.e., the opportunistic effective one-hop throughput (OEOT), to characterize the tradeoff between one-hop packet advancement and packet forwarding time. We further propose a local rate adaptation and candidate-selection algorithm to approach the optimum of this metric. The simulation results show that the multirate GOR (MGOR) incorporating the rate adaptation and candidate-selection algorithm achieves higher throughput and lower delay than the corresponding single-rate and multirate traditional geographic routing and single-rate op-portunistic routing protocols. Index Terms—Geographic routing (GR), multihop wireless networks, multirate, opportunistic routing, throughput. I. |
| File Format | |
| Journal | IEEE Trans. Vehicular Technology |
| Publisher Date | 2009-01-01 |
| Access Restriction | Open |
| Content Type | Text |
