Abstract
With the development of wireless sensor networks, many building energy management systems are getting to adopt wireless sensor network as their communication infrastructure. However, the existing wireless sensor network protocols cannot satisfy the energy-saving demand of building energy management systems. Considering the characteristics of the building energy management system wireless sensor networks, a novel energy-efficient routing scheme is proposed called relay participated–new-type building energy management system. Nodes in the building energy management system wireless sensor networks are divided into two types: energy-limited nodes (battery powered) and energy-unlimited nodes (main powered, solar charger, or heat energy powered). Relay participated–new-type building energy management system allows energy-unlimited nodes to temporarily receive packets that are routed to a nearby energy-limited nodes. In this way, time synchronization for low-power sleep at media access control layer is no longer required, which reduces the delay and control overhead at media access control layer dramatically. Relay participated–new-type building energy management system reduces energy usage of energy-limited nodes and extend the lifetime of wireless sensor networks in new-type building energy management systems. Simulation results show that the relay participated–new-type building energy management system protocol significantly improves energy efficiency of limited energy nodes and reduces latency as compared to ad hoc on-demand distance vector–sensor medium access control and low-energy adaptive clustering hierarchy.
Highlights
In recent years, rising energy costs, limited energy resources, increased energy demands, and global warming attract the world’s attention on the global energy conservation
RP-new-type building energy management systems (NTBEMS) relies on the network layer routing information to avoid time synchronization at data link layer to simplify the communication operation of data link layer, which reduces power consumption and decreases the latency of wireless sensor network (WSN) in NTBEMS
In section ‘‘Performance results,’’ we provide simulation results that illustrate the advantage of RP-NTBEMS scheme in WSN of NTBEMS
Summary
In recent years, rising energy costs, limited energy resources, increased energy demands, and global warming attract the world’s attention on the global energy conservation. Wireless nodes of NTBEMS are divided into two types: energy-limited nodes (battery supply) and energy-unlimited nodes (main power). In WSN of NTBEMS, energy-unlimited nodes distribute uniformly, which forms the backbone of the basic communication network These nodes can keep working without sleep because of their negligible power consumption as compared to other electronic devices. Energy-limited nodes will ask its relevant energyunlimited nodes if they have packets for themselves when wake up This scheme takes full advantage of the wireless node heterogeneity in NTBEMS WSNs to meet the energy-limited nodes sleep mechanism which contributes to reducing the energy consumption of energy-limited nodes and prolonging the lifetime of the entire WSN of NTBEMS. We use the relevance between energy-limited nodes and energy-unlimited nodes in network layer to simplify communication operation of the MAC layer, reducing a lot of control signal overhead, such as time synchronization, which can save the energy consumption of energy-limited nodes. RPNTBEMS will reduce energy consumption of energylimited nodes and extend the lifetime of WSN in NTBEMS
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