| 采用两种信道接入机制的认知无线电网络 |
| |
| 引用本文： | 李亭,郑宝玉,孟庆民. 采用两种信道接入机制的认知无线电网络[J]. 信息技术, 2011, 0(6): 11-13,17 |
| |
| 作者姓名： | 李亭 郑宝玉 孟庆民 |
| |
| 作者单位： | 南京邮电大学信号处理与传输研究院,南京,210003 |
| |
| 摘 要： | 时隙Aloha和CSMA是有效的随机接入协议,它们能组成更先进的媒体接入协议。研究了采用时隙Aloha和CSMA的认知无线电网络。其中,主用户比次用户有更高的优先权,次用户需检测信道,避免干扰主用户。因此,主用户采用时隙Aloha接入信道,次用户采用CSMA感知时隙Aloha的时隙,在空闲时隙传输数据包。
|
| 关 键 词： | 认知无线电 媒体访问控制 时隙Aloha 载波侦听多路访问 |
Cognitive radio networks using two MAC protocols |
| |
| LI Ting,ZHENG Bao-yu,MENG Qing-min. Cognitive radio networks using two MAC protocols[J]. Information Technology, 2011, 0(6): 11-13,17 |
| |
| Authors: | LI Ting ZHENG Bao-yu MENG Qing-min |
| |
| Affiliation: | (Institute of Signal Processing and Transmission,Nanjing University of Posts and Telecommunications, Nanjing 210003,China) |
| |
| Abstract: | Both slotted Aloha and CSMA are efficient random access protocols,which can form a more advanced media access protocol.This paper studied the utilization of slotted Aloha and CSMA in cognitive radio networks.Primary users have higher priority than secondary users,and secondary users need to detect channel to avoid interference with primary users.Therefore,primary users access the channel by slotted Aloha,secondary users detect idle time slots of slotted Aloha by CSMA,and transmit data in these time slots. |
| |
| Keywords: | cognitive radio MAC slotted Aloha CSMA |
| 本文献已被 CNKI 万方数据 等数据库收录！ |
|
