DU Min, HUANG Jian, SHI Wei-ren, et al. Low time delay WSNs MAC protocol based on competition and TDMA[J]. 2014, 33(10): 111-114. DOI: 10.13873/J.1000-9787(2014)10-0111-04.
Aiming at accumulative latency problem of classic S-MAC protocol
propose LH-MAC protocol
a low time delay hybrid MAC protocol based on competition and TDMA for wireless sensor networks(WSNs).According to number of hops
LH-MAC provides service with different priorities
so that the packets which have achieved multi-hop transsion have more probability to access to the channel and to realize low time delay transmission of remote node.Comparing to S-MAC and the LH-MAC
simulation results show that LH-MAC reduce end-to-end time delay effectively under the premise of energy efficiency.