| 1. | Chapter 2 studies the cac schemes for cbr traffic in atm networks
第二章研究了atm网络cbr业务连接允许控制机制。 |
| 2. | Chapter 3 studies the model - based cac schemes for vbr traffic in atm networks
第三章研究了atm网络基于模型的vbr业务连接允许控制机制。 |
| 3. | Chapter 4 studies the measurement - based cac schemes for vbr traffic in atm networks
第四章研究了atm网络基于测量的vbr业务连接允许控制机制。 |
| 4. | The research for connection admission control is a important question of real - time communication on atm
对连接允许控制的研究是atm网实时通信中的一个重要课题。 |
| 5. | In chapter 3 , we analyze performance of a delay on atm network at first , then we discussed connection admission control with respond - time analysis
第三章中首先分析一下atm网的延迟特性，用响应时间分析法作连接允许控制的讨论。 |
| 6. | Chapter 1 introduces the basic concepts of cac and its importance . cac schemes are classified based on such an idea that cac should be structured differently for each service category . it explains the present status and problems in cac schemes and atm signaling system , and hence makes the research background clear
全文共分六章：第一章阐述了cac的基本概念及重要性，针对“不同的业务类型由于具有不同的业务特性和qos要求，因而需要建立不同类型的cac机制”这一思想对cac机制进行了分类，分析了atm网络连接允许控制机制和信令系统的研究现状及存在的问题，说明了本文的研究内容并给出了相应的研究成果。 |
| 7. | Consequently a new cac scheme for cbr traffic , lv ~ ? { ~ l ~ : atm ~ iija ~ jlijf ~ linear approximation cac scheme based on the lowest rate replacing , is presented . instead of using the tail of the infinite queue length distribution as an estimate to clr , this cac scheme obtains clr by the upper bound on it , and qos can be well guaranteed in our scheme
在此基础上，提出了一种新的cbr业务连接允许控制机制；基于最小速率替换的线性近似cac机制，该机制能够提供服务质量保证，并且采用了有限容量缓冲区情况下cbr业务信元丢失率的上界，而不是将clr用无限容量缓冲区排队系统的队长尾部分布来近似。 |
| 8. | A cac scheme for vbr traffic based on the rate - modified model is presented . in this scheme , the source model is obtained from the source traffic descriptor ( pcr , scr , mbs ) declared by the users at connection setup time and the direct effect of the relative values of the burst length and the buffer space on the cell loss performance is taken into account , which make our scheme be consistent with the standards and improve the resource utilization
提出了一种基于速率改进模型的vbr业务连接允许控制机制，该机制所采用的业务模型依赖于用产在呼叫连接建立阶段所提交的业务源流量描述符（ pcr ， scr ， mbs ） ， n博士学位论文： atm网络连接允许控制机制的研究并且直接体现了业务突发长度与缓冲区容量之间相对关系对信元丢失性能的影响，从而保持了与现有标准的兼容，并提高了资源利用率。 |
| 9. | Consequently , a measurement - based cac scheme is presented . it does not require any models describing the statistic of the traffic . instead , in our scheme , network monitors and measures the incoming traffic statistics , and makes decisions to admit or reject based on the measured statistics , which enable it to overcome the drawbacks of the model - based cac schemes
在此基础上，提出了一种基于测量的vbr业务连接允许控制机制，该机制不需要用户事先为业务源建立相应的业务模型并向网络提交其业务模型参数，而是通过对业务流的统计特性进行实时测量来进行接纳控制，从而能够克服基于模型的vbr业务cac机制所固有的缺陷。 |
| 10. | Different service has its own traffic characteristics and differentiated quality of service ( qos ) requirement . so it is necessary to study traffic control mechanisms enabling the network to meet various qos constraints defined for different services while achieving high resource utilization , in which connection admission control ( cac ) plays an important role
由于不同类型的业务具有不同的业务特性和服务质量（ qos ）需求，这就要求atm网络能够提供相应的机制以便在高效地提高资源利用率的同时确保不同类型业务的qos ，而连接允许控制（ cac ）则是其中一种十分重要的机制。 |
