A multiplexing method of multimedia signal in ATM networks

Abstract

In the ATM network, which handles such multimedia services as voice, video, and data, a traffic control technique must be established to cope with various requirements of the media for transmission quality. From such a viewpoint, this paper discusses the multiplexing control method which can control the quality. Through the discussion, a control method is proposed which multiplexes the multimedia with various quality requirements and the details of the method are presented. The proposed multimedia multiplexing method contains two control schemes: the polling control for the number of queueing cells with an offset; and the control by monitoring the queue length. The two control methods are switched according to the number of waiting cells of the medium in the severest condition so that the cell delay and the cell loss are controlled. Using the proposed design, the optimal hardware configuration can be derived from the input model and the requirements. Based on the designed optimal hardware configuration, the multiplexing performance of the proposed control method is evaluated by a simulation. It is verified that the multiplexing performance meeting the requirement of each medium is obtained, and a higher throughput is obtained than the polling control without an offset or the queue length monitoring control, indicating that the proposed method is an excellent multiplexing control method.