Jaehyuk Choi, Joon Yoo, Sunghyun Choi, Member, IEEE, and Chongkwon Kim, Member, IEEE
Very interesting paper. I need to organize my thoughts. The core idea is brilliant: the stations advertise their backoff values. I have the feeling that the proposed implementation can be improved.
Merits: It proactively prevent collisions from the very beginning. In comparition, CSMA/ECA has a transitory operation with performance similar to legacy CSMA/CA. In can tolerate a large number of stations delivering acceptable throughput and fairness.
Shortcomings: It requires the modification of the MAC headers, which makes the coexistence with legacy stations trickier. The collision avoidance mechanism relies in additional signaling included in those header. If errors or collisions occur, that signaling is lost and the operation of EBA falls to the same as legacy CSMA/CA.
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