Name
Title | ||
|---|---|---|
Joint Directional LBT and Beam Training for Channel Access in Unlicensed 60GHz mmWave |
Abstract | ||
|---|---|---|
The coexistence of 5G and WiFi at unlicensed 60GHz mmWave band is quite different from that at low frequency, since the communication at high frequency is based on narrow beams. With respect to channel access, the omnidirectional listen before talk (LBT) used at low frequency cannot identify the direction of interference precisely, and is not applicable any more. Furthermore, if the directional LBT for MIMO is adopted, the process of beam sweeping is absolutely necessary, and likely to incur large signalling overhead and delay. Considering the similarity between the beam sweeping in directional LBT and the succeeding beam training process, we propose a channel access mechanism with joint directional LBT and beam training for the coexistence of 5G/wiFi devices at mmWave band. More specifically, with the help of request to send (RTS) and clear to send (CTS) interaction in the directional LBT process, the best beam pair for communication is identified simultaneously. This scheme not only significantly reduces the signalling overhead and delay during the channel access of coexisting devices at mmWave band, but also solves the exposed nodes problem and hidden nodes problem. The simulation results verify the advantages of this scheme in terms of beam search complexity, signalling overhead and sum capacity. |
Year | DOI | Venue |
|---|---|---|
2018 | 10.1109/GLOCOMW.2018.8644418 | 2018 IEEE Globecom Workshops (GC Wkshps) |
Keywords | Field | DocType |
Interference,Training,Monitoring,Transmitters,Receivers,Radio frequency,Delays | Omnidirectional antenna,Signalling,Computer science,Communication channel,Computer network,MIMO,Beam search,Radio frequency,Electronic engineering,Beam (structure),Interference (wave propagation) | Conference |
ISSN | ISBN | Citations |
2166-0069 | 978-1-5386-4920-6 | 0 |
PageRank | References | Authors |
0.34 | 0 | 3 |