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交会是认知无线网络中必不可少的操作,次级用户间通过交会完成通信链路的建立。盲交会策略中次级用户不需要网络集中控制者和公共控制信道来辅助,独立地完成交会。盲交会策略的设计借助于信道跳频技术避免主用户活动的影响,提高交会的性能。文章介绍了交会的基本概念、分类策略、系统模型和主要性能评价指标,详细介绍了基于信道跳频的盲交会策略。总结对比了最具代表性策略的性能,并对未来研究方向提出了展望。
Rendezvous is an essential operation in a cognitive wireless network, and subordinate users complete the establishment of a communication link through rendezvous. The sub-level users in the blind intersection strategy do not need the network centralized controller and the public control channel to assist and complete the rendezvous independently. The design of blind intersection strategy is based on the channel hopping technology to avoid the impact of the main user activities and improve the performance of rendezvous. The article introduces the basic concept of intersection, classification strategy, system model and main performance evaluation index, and introduces the blind intersection strategy based on channel frequency hopping in detail. Summarizes and compares the performance of the most representative strategies, and puts forward the prospect of future research directions.