摘要
本文给出了多模可重构终端(RT)的概念,并且设计了RT的基本功能结构模型,使其能够与各类异种无线接入网络(RANs)进行通信.文中针对RT如何选择RANs和无线接入技术(RATs)的问题,提出了一种具体的解决方案.该方案由终端和无线接入网络分工合作完成,终端方面是建立或者改变连接的发起方,负责与本地无线环境密切相关的信息处理,向网络传递用户需求等通信参数.文中通过RT接入管理的三层贝叶斯网络运算模型来实现上述功能.网络方面负责解决网络间合作的问题,拥有选择RANs和RATs的最终决策权.文中给出了网络方面为RT选择最佳RATs的流程图和算法.最后,仿真结果验证了上述方案的有效性.
The conception of multi-mode reconfigurable terminals （RT） is given. And the basic functional architecture of RT is designed,so that RT could communicate with different kinds of radio access networks （RANs）. A scheme for RT selection of RANs and radio access technologies （RATs） is proposed, which is co-operated by RT and RANs. The RT, which is the initiator of connection establishment and link changes, is responsible for processing the information associated with the local wireless environment. Then it transmits the parameters of user requirements to the network. The implement of the above functions is based on the three levels Bayesian Network model for RT＇s radio access management. The network, which has the final decision-making tight of RATs selection,takes charge of the issues related to the network composition. Finally,computer simulations proved the valid of this scheme.
出处
《电子学报》
EI
CAS
CSCD
北大核心
2007年第10期1833-1837,共5页
Acta Electronica Sinica
关键词
多模终端
可重构
无线接入
贝叶斯网络
multi-mode terminals
reconfigurable
radio access
Bayesian network
