Sub-1G受限接入窗的离散事件网络仿真设计  

Discrete event simulation in Sub-1G networks for RAW

作　　者：王文鼐[1,2] 庄鑫[2] 叶玉婷[2] 王斌[1,2] 

机构地区：[1]南京邮电大学宽带无线通信与传感网技术教育部重点实验室,江苏南京210003 [2]南京邮电大学通信与信息工程学院,江苏南京210003

出　　处：《南京邮电大学学报（自然科学版）》2016年第2期35-40,共6页Journal of Nanjing University of Posts and Telecommunications：Natural Science Edition

摘　　要：以Sub-1G无线网络的吞吐性能为分析对象,基于离散事件网络仿真软件NS2,设计IEEE802.11ah受限接入窗(RAW)的仿真模型,着重于媒质访问控制、传输流程及状态控制定时器。在分析RAW及业务流量指征图(TIM)等技术规范的基础上,论述了帧处理、业务分组缓存和TIM编码的仿真实现方案。通过与传统分布式协调功能的对比实验,对仿真模型的逼真度和可行性进行验证。Aiming at the performance evaluation of Sub-1G wireless networks,based on the open-source discrete-event network simulator NS2,the extension is used to simulate restricted access window（ RAW）specified by IEEE 802. 11 ah,and the design focuses on the simulation model of media access control sublayer and types of state-control timer involved in transmission sequences. Based on the analysis of the specification of RAW and traffic indication map（ TIM）,and a simulation method is described for frame processing,traffic-packet buffering and TIM coding. Experimental results show that compared with the conventional distributed coordination,function,the Sub-1G simulation is proved to be verifiable and feasible.

关 键 词：Sub-1G网络 媒质访问控制 受限接入窗 离散事件仿真 

分 类 号：TN915[电子电信—通信与信息系统]