Jitter analysis of real-time services in IEEE 802.15.4 WSNs and wired IP concatenated networks

doi:10.1016/S1005-8885(16)60039-0

中国邮电高校学报(英文) ›› 2016, Vol. 23 ›› Issue (4): 1-8.doi: 10.1016/S1005-8885(16)60039-0

• Networks • 下一篇

Jitter analysis of real-time services in IEEE 802.15.4 WSNs and wired IP concatenated networks

那飞¹,迟学芬¹,董雯¹,于海凤

收稿日期:2016-03-30 修回日期:2016-07-07 出版日期:2016-08-30 发布日期:2016-08-30
通讯作者: 迟学芬 E-mail:chixf@jlu.edu.cn
基金资助:
异质业务背景下4G移动网络分析模型和性能优化研究

Jitter analysis of real-time services in IEEE 802.15.4 WSNs and wired IP concatenated networks

Received:2016-03-30 Revised:2016-07-07 Online:2016-08-30 Published:2016-08-30

摘要/Abstract

摘要： It is challenging and significant to explore the impacts of non-real-time services on real-time services from the perspective of jitter. Most of current researches on jitter made too many mathematical hypotheses on networks and traffic. This paper puts forward a tandem queuing model to characterize the real communication scenario where heterogeneous services are served by IEEE 802.15.4 wireless sensor networks (WSNs), and then the packets served successfully are fed to Internet protocol (IP) networks. By analyzing the contention access processes in IEEE 802.15.4 WSNs, the authors derive the departure processes of the two types of services, i.e., the arrival processes of IP networks. The IP network is modeled as a queuing system, in which the real-time service is forwarded accompanied by the non-real-time service. Investigating the jitter of real-time services is intractable. Therefore, this paper abstracts this problem as a dynamic queuing system evolving on a dynamic time interval. Referring the transient analysis method (TAM), this paper obtains the queue length in a random time interval which is scaled by the arrival of real-time services. Queue length evolution is closely connected with the jitter. Benefiting from the derivation in probability generation domain, the jitter of real-time services is obtained.

关键词: jitter, heterogeneous M2M services, transient analysis, IEEE 802.15.4 WSNs, IP networks

Abstract: It is challenging and significant to explore the impacts of non-real-time services on real-time services from the perspective of jitter. Most of current researches on jitter made too many mathematical hypotheses on networks and traffic. This paper puts forward a tandem queuing model to characterize the real communication scenario where heterogeneous services are served by IEEE 802.15.4 wireless sensor networks (WSNs), and then the packets served successfully are fed to Internet protocol (IP) networks. By analyzing the contention access processes in IEEE 802.15.4 WSNs, the authors derive the departure processes of the two types of services, i.e., the arrival processes of IP networks. The IP network is modeled as a queuing system, in which the real-time service is forwarded accompanied by the non-real-time service. Investigating the jitter of real-time services is intractable. Therefore, this paper abstracts this problem as a dynamic queuing system evolving on a dynamic time interval. Referring the transient analysis method (TAM), this paper obtains the queue length in a random time interval which is scaled by the arrival of real-time services. Queue length evolution is closely connected with the jitter. Benefiting from the derivation in probability generation domain, the jitter of real-time services is obtained.

Key words: jitter, heterogeneous M2M services, transient analysis, IEEE 802.15.4 WSNs, IP networks

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Jitter analysis of real-time services in IEEE 802.15.4 WSNs and wired IP concatenated networks

Jitter analysis of real-time services in IEEE 802.15.4 WSNs and wired IP concatenated networks

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