文章提出了一种基于证书的群组通信方案。
This thesis brings out a novel group communication scheme based on digital certificate.
流动语音(Fluid Voice)：一个移动群组通信系统。
但在群组通信中，COM无法实现多个客户之间的直接通信。
But com doesn't accomplish the direct communication of many clients in multicast communication.
安全的群组通信是网格环境下开展大量的协作与资源共享的必要手段。
Secure group communication is a critical means to implement a great deal of collaboration and resource sharing in grid environment.
采用IP组播技术的群组通信将是包交换通信网络中非常重要的一类应用。
Group communication based on IP-multicast technology will be an important part of packet switch networks.
多播是一种群组通信的手段，要求将信息从一个数据源同时传送到多个目的地。
Multicasting is a means of group communications. It delivers information from a source to several destinations in the same time.
它是一种应用于一对一通信和群组通信的半双工的移动通信业务，具有很大的市场潜力。
It is a mobile communication business of half duplexing for instant one-on-one or one-to-group communications, which has great market potential.
协同编著系统一般需要支持多人共同协作，因而需要有一个点到多点的群组通信平台的支持。
Considering that multi-people cooperation is necessary condition cooperative editor work, a group platform supporting one-multi communication is indispensable.
随着大型群组通信带宽的增加、规模的扩展以及应用的增多，会议密钥建立的应用越来越广泛。
With the increase in bandwidth, size, and application of large group communication, a growing application area in network is conference-key establishment.
安全群组通信的研究是一个十分活跃的研究领域，群组密钥管理机制的研究是其中最具有挑战性的工作。
Secure group Communication System has been an active research domain, in which the group key management scheme is the most challenging work.
相对于端到端的通信，安全群组通信更为复杂，从基本算法、系统及安全协议到安全实现都还存在需解决的问题。
Secure group communication is more complicated than peer to peer communication, and poses a number of challenges ranging from basic algorithms, systems and secure protocols to secure implementation.
文章主要描述建立群组通信抽象模型的过程和结论以及参照新型运输协议XTP和计算机会议应用的模型映射和评价。
The group communication model which the authors get, the projections for lightweight transport protocols XTP and computer conferencing applications are described in this paper.
随着3g时代的来临，各种新型业务应用应运而生，而即时通信，呈现服务，群组通信在各类业务中占有这极其重要的地位。
While 3g is coming, the various applications occur. In all these services, instant message communication and group communication are in the very important position.
视频会议多点到多点的群组通信方式，对于视频会议的任何一个成员都要占用带宽，对带宽有很高要求，而网络资源是有限的。
Video conference is a communication mode with multipoint to multipoint, which requires high bandwidth for every member in the conference, but the bandwidth in the Internet is limited.
因此，本课程讲述了CSCW的群组通信原理，讨论点对多点和多点对多点通信模型下的路由问题、可靠传输问题和安全问题。
This course introduces the theory of group communication of CSCW. We discuss the route, reliable transfer and security problems under point-to-multipoint, multipoint-to-multipoint communication.
在基本知识查询和处理语言(KQML)的基础上进行扩充，使得KQML能够支持多智能体群组密钥更新协议和安全群组通信协议。
Extends the base knowledge query and manipulation language (KQML) to support multi-agent group re-keying protocols and secure group communication protocol.
群组语音通信很好的实现了网络语音会议，为用户大大节省了通信费用。
The group voice communication is very good realization network conference, has greatly saved the correspondence expense for users.
组播是面向群组接收者的首选网络通信技术，但缺乏安全机制限制了组播在各种网络业务中的广泛应用。
Multicast is the current prime network technique focusing on the group receivers, but the absence of security mechanism has limited its application in various network services.
群组密钥协商(GKA)是保证随后安全通信的重要手段之一。
Group Key Agreement (GKA) is one of the important methods to ensure the subsequent secure communication.
为了减小群组购买中联盟形成的时间、通信成本，引入参照群组作为群组购买中联盟形成的机制。
Reference group is introduced as the mechanism for setting up a coalition so as to minimize the cost of communication and time.
针对大型动态群组组播通信密钥更新开销大的问题，提出一种高效的混合组播密钥管理方案。
This paper proposes an efficient hybrid multicast key management scheme to solve the problem of high key update cost in large dynamic multicast group.
针对大型动态群组组播通信密钥更新开销大的问题，提出一种高效的混合组播密钥管理方案。
This paper proposes an efficient hybrid multicast key management scheme to solve the problem of high key update cost in large dynamic multicast group.
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