We propose a model of multicast real-time in DQDB network, examine the desired properties and the difficulties in achieving these properties, and introduce its main message process.

• 我们提出一种在DQDB网络中实现多点实时通信的模型，分析了期望的性质和实现的主要问题，并介绍了在该模型下消息处理过程。