无线Mesh网络环境下的SLA机制  

SLA mechanism in wireless Mesh network

作　　者：赵耀培[1,2] 杨扬[1] 

机构地区：[1]北京科技大学计算机与通信工程学院,北京100083 [2]山东管理学院科研处,山东济南250100

出　　处：《计算机工程与设计》2015年第11期2881-2885,2897,共6页Computer Engineering and Design

基　　金：国家自然科学基金项目(61070182;61170209;61272508)

摘　　要：对无线Mesh网络环境中SLA机制进行研究,建立一套无线Mesh环境下基于不同服务等级的冲突避免机制,在MAC层设计基于多服务等级的冲突避免算法(multipriority collision avoidance,MPCA),针对不同SLA策略的数据流采用不同退避算法。该算法支持突发业务流传输,能够保证高服务等级业务的实时性。仿真结果表明,MPCA能有效提高用户感知服务质量、服务可靠性以及可用性和稳定性。SLA mechanism in wireless Mesh network was studied.A collision avoidance mechanism based on different service levels in wireless network was presented.The collision avoidance algorithm based on multiple service levels in MAC was designed,named as multipriority collision avoidance（MPCA）.Considering the data stream with different strategies of SLA,MPCA adopted different retreating algorithms.MPCA supported the transmission of sudden business flow,and assured the instantaneity of business with high service level.The simulation results show that MPCA can effectively improve service quality of customers＇ perception,service reliability,usability and stability.

关 键 词：服务等级SLA 冲突避免算法 无线MESH网络 突发业务流 服务质量 

分 类 号：TN915[电子电信—通信与信息系统]