End-tn-End Measurement-Based Admission control

基于端到端测量的准入控制

基本信息

批准号：
14350199
负责人：
MASE Kenichi
金额：
$ 9.47万
依托单位：
Niigata University
依托单位国家：
日本
项目类别：
Grant-in-Aid for Scientific Research (B)
财政年份：
2002
资助国家：
日本
起止时间：
2002 至 2005
项目状态：
已结题

来源：
https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-14350199/
关键词：
VoIP Admission Control Internet Measurement QoS MOS SIP Voice Quality MoS VolP

项目摘要

When the traffic congestion occurs in VoIP network, voice quality may be degraded due to packet loss, delay and jitter. Admission control is required to limit the number of on-going VoIP sessions to maintain voice transmission quality. To this aim, a signaling protocol such as RSVP (Resource reservation Protocol) can be used. High level quality of voice quality is guaranteed with this method, since the forwarding devices such as the router make resource reservation before performing voice communication. However, this method suffers from scalability problems, because routers need to maintain per flow information for resource reservation. Moreover, all routers in the network should support RSVP. There is another method called end point admission control. In this method, only source and destination nodes are in charge of admission control and intermediate routers has no special functions for admission control, leading to higher scalability. This research focuses on end-to-end measurement-based admission control and quality of services management methods. The proposed method employs a way to make a decision of whether a call can be admitted or not depending on the network congestion state that is measured using probing probe packets between end points. This research has achieved several goals as listed below.1.Mechanisms for end-to-end measurement-based admission control.2.Admission control with alternate path environment.3.Network design for networks with end-to-end measurement-based admission control.4.Trial implementation of phone5.VoIP quality management systemBottleneck bandwidth measurement for an end-to-end network path

当VoIP网络中发生交通拥堵时，由于数据包丢失，延迟和抖动，语音质量可能会降低。需要入场控制以限制正在进行的VoIP会话的数量以保持语音传输质量。为此，可以使用诸如RSVP（资源保留协议）之类的信号传导协议。通过这种方法可以保证高水平的语音质量，因为在执行语音交流之前，诸如路由器之类的转发设备进行资源保留。但是，此方法存在可扩展性问题，因为路由器需要维护每个流信息以进行资源保留。此外，网络中的所有路由器均应支持RSVP。还有另一种称为终点入学控制的方法。在这种方法中，只有源和目的地节点可以控制入院控制，而中级路由器没有用于入院控制的特殊功能，从而导致更高的可扩展性。这项研究重点介绍基于端到端测量的录取控制和服务管理方法的质量。所提出的方法采用一种方法来决定是否可以根据网络拥塞状态接收呼叫，该网络拥塞状态使用端点之间的探针数据包进行测量。这项研究已实现了下面列出的几个目标。1。基于端到端测量的机构招生控制。2。带有替代路径环境的入境控制。3。网络设计具有基于端到端测量的网络的NETWork设计。