Capture-Aware Staggering for Concurrent Transmissions
Source: University of South Carolina
Spatial reuse in wireless networks is limited by the SINR threshold requirement. To satisfy this, neighbors of a receiver are expected to remain silent while a reception is in progress. Moreover, since 802.11 requires bidirectional exchange (i.e., nodes reverse their roles as transmitters and receivers), neighbors of both the transmitter and receiver must keep quiet for the entire duration of communication. This degrades spatial reuse, leading to low network throughput. Several approaches have been proposed to address this problem. In the spatial domain, power control, rate control, and carrier-sense adaptations have successfully identified possibilities of concurrency, while respecting the SINR requirement.