The traditional slotted ring network is one of the high speed networks, however its transmission delay in heavy network load is too long. We propose a reservation mechanism to improve this drawback. The mechanism is particularly useful in the heavy network load to get a lower delay for high priority packet transmission. We compare it with a traditional slotted ring network by using simulations, and the results show that this mechanism provides the lower delay when the network traffic load is heavy.

We introduce a new network access protocol for a CSMA-type multichannel local area network (MLAN). This new protocol has the capability of providing different network access priority among the various applications. From the earlier research, it has been shown that the CSMA-type MLAN is superior to a single channel of equal network bandwidth. On the basis of the developed MLAN architecture, we construct a new network access protocol to provide multiple transmission priorities for various applications e.g., text, voice, video, image, etc. This protocol is called multiple-priority multichannel local area network (MP-MLAN). The data transmission of MP-MLAN is collision-free, and we can find the throughput characteristics of MP-MLAN are higher and more stable than the conventional CSMA/CD or multichannel CSMA/CD network from the analysis results. A queueing analysis model for representing the MP-MLAN protocol is established and simulation results are also provided to evaluate the performance of this network.