In this paper, we describe the development of a mobile butterfly-watching learning (BWL) system to realize outdoor independent learning for mobile learners. The mobile butterfly-watching learning system was designed in a wireless mobile ad-hoc le

认知无线电中MAC层协议的综述性文章，很全面，值得一看。-A survey on MAC protocols for cognitive radio networks Claudia Cormio , Kaushik R. Chowdhury