摘要
给出了一个宽带无线IP实验系统。该系统由 4～ 6个移动终端、2个无线接入点和 2个无线接入服务器组成 ,可提供 2～ 11Mbps的高速无线传输 ,支持IEEE80 2 .11b协议和移动IP协议 ,具有可靠的信息安全机制 ,可支持在移动环境下的WWW浏览、FTP、VOD等业务。提出了高效的UMPA的多址协议 ,该协议利用自组织算法来确定网络中的用户数 。
A wideband wireless IP prototype system is presented. The prototype system consists of 2 wireless access points and 2 wireless access servers and 4～6 mobile terminals, which are located in two independent subnetworks. The IEEE 802.11b and Mobile IP protocols are implemented in the system. It provides Video on Demand, FTP and WWW Browser services for mobile users with high security. The wireless channel data rate is 2～11Mbps. A new multiple access, called UPMA (User dependent Perfect schedule Multiple Access), is proposed. By using the proposed self organizing algorithm, UPMA can determine the active user number in the network, so that the packet transmissions in the channel can be perfectly scheduled. The simulation results show that UPMA has very high efficiency.
出处
《高技术通讯》
EI
CAS
CSCD
2001年第7期49-54,共6页
Chinese High Technology Letters
基金
863计划 (863 3 17 0 3 0 3 99)
国家自然科学基金 (69872 0 2 8)
教育部青年骨干教师计划资助项目
