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根据信源数据特征和信道质量来改变传输参数的自适应机制是保证移动多媒体业务有效传输的重要方法之一。针对具有移动接入的多媒体业务的特点，给出了一种适用于未来多媒体综合业务移动传输的分层新结构，并介绍基于此结构的自适应宽带多媒体数字传输系统设计模型。
According to the source data characteristics and channel quality to change the transmission parameters of the adaptive mechanism is to ensure the effective transmission of mobile multimedia services, one of the important ways. Aiming at the characteristics of multimedia services with mobile access, a new layered architecture suitable for mobile multimedia services in the future is given. The design model of adaptive broadband multimedia digital transmission system based on this architecture is also introduced.