版权所有:内蒙古大学图书馆 技术提供:维普资讯• 智图
内蒙古自治区呼和浩特市赛罕区大学西街235号 邮编: 010021
作者机构:Natl Taiwan Univ Sci & Technol Dept Elect Engn Taipei Taiwan
出 版 物:《COMPUTERS & ELECTRICAL ENGINEERING》 (计算机与电工)
年 卷 期:2015年第42卷
页 面:49-59页
核心收录:
学科分类:0808[工学-电气工程] 08[工学] 0812[工学-计算机科学与技术(可授工学、理学学位)]
基 金:National Science Council ROC [NSC 97-2219-E-011-008 NSC 98-2219-E-011-006 NSC 99-2219-E-011-006]
主 题:Heterogeneous network Cooperative networking Distributed Multi-Agent Scheme (DMAS) IP Multimedia Subsystem (IMS) Q-Learning algorithm Quality of Service (QoS)
摘 要:In this study, the Quality of Service (QoS) needed to support service continuity in heterogeneous networks is achieved by a Distributed Multi-Agent Scheme (DMAS) based on cooperation concepts and an awareness algorithm. A set of problem solving agents autonomously process local tasks and cooperatively interoperate via an in-cloud blackboard system to provide QoS and mobility information. A Q-Learning awareness algorithm calculates the exceptive rewards of a handoff to all access networks. These rewards are then used by problem solving agents to determine what actions must be performed. Agents located in the integrated IMS-4G-Cloud networks handle service continuity by using a handoff mechanism. Through operations and cooperation among active agents, these phases select a policy for predictive and anticipated IF Multimedia Subsystem (IMS) handoff management. Compared with conventional IMS handoff management, the proposed DMAS scheme achieves shorter handoff delay and better QoS for real-time service applications. (C) 2014 Elsevier Ltd. All rights reserved.