摘要
宽带卫星通信比一般的通信系统具有覆盖面积大,性能稳定等优势,能够大幅度提升通信网络的用户容量和整体质量,而其中的CFDAMA多址接入协议相对于传统的接入方式能实现更好的网络性能,但并不能适应实际应用中具有突发性和多样性的网络业务流。在此基础上通过对CFDAMA-PR协议的分析,提出了一种用户优先级排序的改进接入协议CFDAMA-PRI,优化了星上调度算法,降低了数据分组的传输时延,提高了链路的传输效率和用户接入的公平性。
Compared with other communication systems, broadband satellite communication enjoys the supriorites of covering a larger area and stable performance, and could greatly enhance user capacity and o- verall quality of the communication network. Meanwhile, in terms of multiple access protocol in broadband satellite communication, CFDAMA could achieve a better network performance in comparison with traditional access protocol, but could not adapt bursting and variant network data. In light of this and based on the analysis of CFDAMA-PR, a modified protocol named CFDAMA-PRI is propsed. With user priority ranking to optimize satellite resource scheduling algorithm, it could reduce the time-delay of data packets, and improve the transmission efficiency of channel and the fairness of user access.
出处
《通信技术》
2014年第12期1375-1379,共5页
Communications Technology
