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Power Consumption and Efficiency in Wireless Network Protocols

This article explores the power consumption and complexity of various wireless network protocols including 802.11a, 802.11b, 802.11g, and Bluetooth standards (802.15). It details the role of backbone and leaf nodes in ad-hoc networks, emphasizing energy-efficient communication through topology control protocols. Techniques such as asynchronous and synchronous sleep schedulers are discussed, showcasing how they help maintain connectivity while reducing power usage. Examples like BMAC, SMAC, and CBTC illustrate effective approaches in managing data transmission and energy conservation across different network frameworks.

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Power Consumption and Efficiency in Wireless Network Protocols

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  1. Power Consumption & Complexity 802.11a HiperLAN WLAN 802.11g 802.11b 802.15.1 Bluetooth 802.11 802.15.3 802.15.4 WPAN Data Rate 802.15 Wireless Standards

  2. Backbone Protocol (Ad-Hoc Network) • Some nodes chosen as backbone nodes • Backbone nodes stay on at all times • Leaf nodes can go to sleep • Establishes path between source and destination nodes • Examples: SPAN, PEAS 1 3 5 2 4

  3. Topology Control Protocols • Goal to Reduce Transmission power for controlling topology to remain connected, while at the same time saving energy • Examples: CBTC, Localized Delauney Triangulation Topology Control Homogeneous (Critical Transmitting Range) Heterogeneous Location Based Direction Based Neighbor Based Minimum Range Assignment Energy-Efficient Communication

  4. Asynchronous Sleep Schedulers • Senders Transmit for longer periods of time to guarantee nodes are awake to hear you • Receivers check the channel periodically to see if it data being transmitted • Examples : BMAC, WiseMAC Transmitter Preamble Data Sleep Receiver Sleep Check the Channel Check the Channel Check the Channel and receive

  5. Synchronous Sleep Schedulers • Assumes clock synchronization between nodes • Senders and receivers know when each other are on, so send only during those periods • Examples: SMAC, PAMAS, 802.11 PSM Transmitter: Awake Awake Asleep Asleep Asleep Send Packets Send Packets Receiver: Awake Awake Asleep Asleep Asleep Receive Packets

  6. Wide Area Network (WAN) 802.16e Nomadic 802.20 Mobile 802.21 Handoff 802.22 WRAN 2, 2.5, 3G Cellular Metropolitan Area Network (MAN) 802.16/WiMAX Fixed Wireless MAN Local Area Network (LAN) 802.11 Wi-Fi Personal Area Network (PAN) 802.15.1 Bluetooth 802.15.3 802.15.4 Zigbee

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