Name
Abstract | ||
|---|---|---|
How to shorten the time for channel waiting is critical to avoid network contention. Traditional MAC protocols with CSMA often assume that a transmission must be deferred if the channel is busy, so they focus more on the optimization of serial transmission performance. Recent advances in physical layer, however, allows a receiver to reengage onto a stronger incoming signal from an ongoing transmission or interference, and thus shows the potential of parallel transmissions. Indeed, even if the channel is busy, a node has opportunities to carry out a successful transmission. In this study, we propose opportunistic concurrency (OPC), a new MAC layer scheme, which enables sensor nodes to capture the opportunistic concurrency and carry out parallel transmissions instead of always waiting for a clear channel. Based on local concurrency map, which encodes the interactions among different links, OPC utilizes concurrency control algorithm to make transmission decision distributedly. Our experiments on a testbed consisting of 60 TelosB sensor motes identify the transmission opportunities in WSNs with OPC. Evaluation results show that OPC achieves a 17 percent reduction in packet latency, a 9.4 percent addition in throughput and a 10 percent reduction in power consumption compared with existing approaches. |
Year | DOI | Venue |
|---|---|---|
2015 | 10.1109/TPDS.2014.2329307 | Parallel and Distributed Systems, IEEE Transactions |
Keywords | Field | DocType |
concurrent mac protocol,wireless sensor networks,interference,concurrent computing,opc,signal to noise ratio | Key distribution in wireless sensor networks,Concurrency control,Concurrency,Computer science,Communication channel,Computer network,Real-time computing,Physical layer,Throughput,Concurrent computing,Wireless sensor network,Distributed computing | Journal |
Volume | Issue | ISSN |
26 | 7 | 1045-9219 |
Citations | PageRank | References |
1 | 0.35 | 17 |
Authors | ||
6 | ||
Name | Order | Citations | PageRank |
|---|---|---|---|
| Qiang Ma | 1 | 167 | 14.03 |
| Kebin Liu | 2 | 673 | 35.77 |
| Zhichao Cao | 3 | 172 | 23.04 |
| Tong Zhu | 4 | 89 | 5.60 |
| Xin Miao | 5 | 50 | 3.55 |
| Yunhao Liu | 6 | 8810 | 486.66 |