Mobility

Modifications in IEEE 802.11 to Prevent Collisions Due to Interference in MANETS

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Executive Summary

Collisions due to interference signal are frequent in multi-hop wireless networks. Interference signal can be reduced below a threshold level if all parallel transmitter-receiver pairs maintain a minimum of 'Safe-distance' between them. A node observes a 'Significant' sudden increase or decrease in its received signal whenever another node within its 'Safe-distance' begins or ends its transmission. Thus, if any node observes a sudden increase in its received signal by more than the 'Significant' value, it infers that another node within its 'Safe-distance' has begun its transmission. Similarly, when any node observes a sudden decrease in its received signal by more than the 'Significant' value, it infers that another node within its 'Safe-distance' has completed its transmission.

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