Research And Implementation Of Measurement Algorithm And Probe For Wireless Network

With the fast development of mobile network,mobile network applications fast growth,network video service rapid develop,the number of active mobile intelligent network in China equipment reached 899 million,the mobile Internet video service is becoming the main entrance to the mobile Internet traffic,network video monitoring index is particularly important for video business development.Network bandwidth and packet delay are important indicators of network performance,these indicators directly affect the quality of the various services under the current network,network measurement has become an important means and basis for Internet service quality control,management and network maintenance operation.This paper research and implementation of packet delay,packet loss,bottleneck bandwidth,available bandwidth and IPTV relevant indicators,for available bandwidth measurement is not accurate in wireless network,available bandwidth measurement algorithm suitable for wireless networks is proposed,and experimental analysis and verification are carried out.On this basis,this paper is based on the existing distributed network measurement system TANC,research and implementation of the wireless network measurement probe,which can run on mobile devices,wireless probe through wireless network access,can measure the related indicators of network performance and video service.Compared with fixed network,wireless network has complex environment,instability and other factors.Mobile devices have limitations in computing resources and storage resources.These factors are considered in the design and implementation of wireless probes.This paper first introduces the research background and significance,analyzes and summarizes the existing network performance indicators and video service related index measurement algorithm.After a detailed study of the relevant indicators of delay and packet loss,bottleneck bandwidth,available bandwidth,IPTV measurement algorithm,proposed algorithm of available bandwidth measurement based on Savitzky-Golay filter in wireless network,carried out analysis and verification experiments.On this basis,the requirements of the wireless probe are analyzed,the specifications of the wireless probe are determined,and the design of each function module of the wireless probe is completed.The wireless probe is designed and implemented according to the characteristics of the wireless network and mobile devices.Finally,the wireless probe measurement indicators are tested,and the accuracy of each measurement is verified by experimental comparison.Meanwhile,the performance of wireless probe is tested,and the operation of wireless probe is analyzed and summarized.