In order to improve the performance of energy consumption for 6LoWPAN network
a channel contention mechanism based on superframe sleep period was proposed.Then a Markov chain model was established for the mechanism.Based on this model
the mathematical analysis on the steady-state probability of sending state
channel conflict probability and node average energy consumption was performed
and moreover the influence of the protocol parameters λ、minBE and NB on the network performance such as energy consumption was also analyzed.Finally
it is showed by the theoretical analysis that our model describes the MAC protocol of 6LoWPAN very well.The new mechanism reduces the network energy consumption