changelog

11e的草案 相信对相关研究人员很有用 如果你在这里搜到了

modifications, finished and tested
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- adapted EDCF model to ns-2.28
- cleaned slot boundary computation 
- updated EDCA to approved draft version 13.0:
	- increment of retry counter in case of internal collisions
	- new backoff decrement according to 11e draft v13.0

to be tested
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- RTS/CTS mechanism

TBD
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- block ACK / no ACK mechanism