Abstract:

Mobile bluetooth devices have limited battery energy in opportunistic networks whose wireless devices are carried by humans. Moreover, nodes are often in the long disconnected state in opportunistic networks. Therefore, it is an important issue that how to design an effective node wakeup scheduling pattern so as to reduce energy consumption and keep the existing network connectivity. A bluetooth node wakeup scheduling policy, named BWM, is proposed. This policy studies the power consumption problem in bluetooth devices and constructs the bluetooth energy cost of the data transmit model. Furthermore, BWM studies the relationship of key parameters in wakeup scheduling mechanism and controls the wakeup period intervals in order to ensure the effective data throughput of nodes. The simulation results show that our policy can reduce the power consumption of nodes under the premise of effective data delivery ratio.

Key words: opportunistic networks;wake-up scheduling mechanism;power consumption