Collision Avoidance in wireless designs is necessary for efficient use of power and bandwidth.
Following are Collision Avoidance specifications and designs:
Ethernet Frame Types: http://www.networkmagazine.com/article/NMG20000727S0013/2 IEEE 802.3 - Ethernet CSMA/CD (Carrier Sense Multiple Access with Collision Detect): http://standards.ieee.org/getieee802/802.3.html
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