In recent years, the application of the Internet of Things （IoT） has become an emerging business. The most important concept of next-generation network for providing a common global IT platform is combining seamless...In recent years, the application of the Internet of Things （IoT） has become an emerging business. The most important concept of next-generation network for providing a common global IT platform is combining seamless networks and networked things, objects or sensors. Also, wireless body area networks （WBANs） are becoming mature with the widespread usage of the IoT. In order to support WBAN, the platform, scenario and emergency service are necessary due to the sensors in WBAN being related to wearer＆#39;s life. The sensors on the body detect a lot of information about bioinformatics and medical signals, such as heartbeat and blood. Thus, the integration of IoT and network communication in daily life is important. However, there is not only a lack of common fabric for integrating IoT with current Internet and but also no emergency call process in the current network communication envi-ronment. To overcome such situations, the prototype of integrating IoT and emergency call process is discussed. A simulated boot-strap platform to provide the discussion of open challenges and solutions for deploying IoT in Internet and the emergency commu-nication system are analyzed by using a service of 3GPP IP multimedia subsystem. Finally, the prototype for supporting WBAN with emergence service is also addressed and the performance results are useful to service providers and network operators that they can estimate their migration to IoT by referring to this experience and experiment results. Furthermore, the queuing model used to achieve the performance of emergency service in IMS and the delay time of the proposed model is analyzed.展开更多
Mobility support for the next generation IPv6 networks has been one of the recent research issues due to the growing demand for wireless services over internet.In the other hand,3GPP has introduced IP Multimedia Subsy...Mobility support for the next generation IPv6 networks has been one of the recent research issues due to the growing demand for wireless services over internet.In the other hand,3GPP has introduced IP Multimedia Subsystem as the next generation IP based infrastructure for wireless and wired multimedia services.In this paper we present two context transfer mechanisms based on predictive and reactive schemes,to support seamless handover in IMS over Mobile IPv6.Those schemes reduce handover latency by transferring appropriate session information between the old and the new access networks.Moreover,we present two methods for QoS parameters negotiations to preserve service quality along the mobile user movement path.The performances of the proposed mechanisms are evaluated by simulations.展开更多
该文研究了IMS(IP Multimedia Subsystem)中的呼叫建立流程,以确定可以优化的信令流量,研究结果显示:S-CSCF(Serving Call Session Control Function)是IMS中的瓶颈点。为了降低会话建立时延,提高系统性能,提出了一种基于组的业务触发算...该文研究了IMS(IP Multimedia Subsystem)中的呼叫建立流程,以确定可以优化的信令流量,研究结果显示:S-CSCF(Serving Call Session Control Function)是IMS中的瓶颈点。为了降低会话建立时延,提高系统性能,提出了一种基于组的业务触发算法(Group based Service Triggering Algorithm,GSTA),然后对现有3GPP(3rd Generation Partnership Project)提出的业务触发算法(3GPP STA,3GPP Service Triggering Algorithm)和GSTA进行了性能建模,理论分析和仿真结果表明GSTA可以有效地降低S-CSCF的信令流量,增加了整个系统的吞吐量,同时显著减少了会话建立时延,提高了IMS网络的服务质量。展开更多
基金partly funded by Ministry of Science and Technology of R.O.C. under grants no.NSC 101-2221-E-197008-MY3
文摘In recent years, the application of the Internet of Things （IoT） has become an emerging business. The most important concept of next-generation network for providing a common global IT platform is combining seamless networks and networked things, objects or sensors. Also, wireless body area networks （WBANs） are becoming mature with the widespread usage of the IoT. In order to support WBAN, the platform, scenario and emergency service are necessary due to the sensors in WBAN being related to wearer＆#39;s life. The sensors on the body detect a lot of information about bioinformatics and medical signals, such as heartbeat and blood. Thus, the integration of IoT and network communication in daily life is important. However, there is not only a lack of common fabric for integrating IoT with current Internet and but also no emergency call process in the current network communication envi-ronment. To overcome such situations, the prototype of integrating IoT and emergency call process is discussed. A simulated boot-strap platform to provide the discussion of open challenges and solutions for deploying IoT in Internet and the emergency commu-nication system are analyzed by using a service of 3GPP IP multimedia subsystem. Finally, the prototype for supporting WBAN with emergence service is also addressed and the performance results are useful to service providers and network operators that they can estimate their migration to IoT by referring to this experience and experiment results. Furthermore, the queuing model used to achieve the performance of emergency service in IMS and the delay time of the proposed model is analyzed.
文摘Mobility support for the next generation IPv6 networks has been one of the recent research issues due to the growing demand for wireless services over internet.In the other hand,3GPP has introduced IP Multimedia Subsystem as the next generation IP based infrastructure for wireless and wired multimedia services.In this paper we present two context transfer mechanisms based on predictive and reactive schemes,to support seamless handover in IMS over Mobile IPv6.Those schemes reduce handover latency by transferring appropriate session information between the old and the new access networks.Moreover,we present two methods for QoS parameters negotiations to preserve service quality along the mobile user movement path.The performances of the proposed mechanisms are evaluated by simulations.
文摘该文研究了IMS(IP Multimedia Subsystem)中的呼叫建立流程,以确定可以优化的信令流量,研究结果显示:S-CSCF(Serving Call Session Control Function)是IMS中的瓶颈点。为了降低会话建立时延,提高系统性能,提出了一种基于组的业务触发算法(Group based Service Triggering Algorithm,GSTA),然后对现有3GPP(3rd Generation Partnership Project)提出的业务触发算法(3GPP STA,3GPP Service Triggering Algorithm)和GSTA进行了性能建模,理论分析和仿真结果表明GSTA可以有效地降低S-CSCF的信令流量,增加了整个系统的吞吐量,同时显著减少了会话建立时延,提高了IMS网络的服务质量。
