Energy efficient medium access control protocol for IEEE 802.11 WLANs
First Claim
1. An energy efficient medium access control protocol for IEEE 802.11 WLANs scheduling a delivery of each of power saving host for reducing waiting time and a collision between the transmitting data and making each awake host overhear the transmitting data one another for adjusting an announcement traffic indication message (ATIM) window size by using characters of fully connected of wireless LAN topology.
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Abstract
IEEE 802.11 power management scheme for an ad hoc network is based on the Carrier Sense Multiple Access with Collision Avoidance (CSMA/CA) access procedure to transmit/receive their data frames. CSMA/CA may waste the scarce energy and bandwidth due to frame collisions and lengthen the frame delay due to waiting backoff time. In addition, IEEE 802.11 power management scheme does not specify how to tune the ATIM window size in a beacon interval. However, the ATIM window size affects the power consumption and throughput of a network considerably. The fixed ATIM window size cannot always accommodate the various traffic conditions. To conquer these problems and to improve the performance of networks, we propose a energy efficient MAC protocol for IEEE 802.11 networks by scheduling transmission after the ATIM window and adjusting the ATIM window dynamically to adapt to the traffic status.
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4 Claims
- 1. An energy efficient medium access control protocol for IEEE 802.11 WLANs scheduling a delivery of each of power saving host for reducing waiting time and a collision between the transmitting data and making each awake host overhear the transmitting data one another for adjusting an announcement traffic indication message (ATIM) window size by using characters of fully connected of wireless LAN topology.
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