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本文介绍了一种新的局部网结构—Bus-Ring和介质送取控制方式—TOKEN CAPTURE,新网的外形结构仍是环形的,但每个结点的接口处理机有一个三态门来旁路,这样,报文经过每个结点时没有延迟,报文在网络中被所有结点同时收到,基于这种网络结构,可以实现令牌截取控制方式,在网络中,令牌不是逐个结点地顺序转送,而是由要求发送信息的结点在环路上截取令牌,建立令牌时采用侦听和碰撞检测技术,如同CSMA/CD,这样,在网络轻载时,可以使用CSMA/CD方式,重载时,使用TOKEN CAPTURE方式,这种新型网络增加了送取方式的灵活性,减少了报文经过每个结点的延迟和令牌传递时间,计算机仿真结果表明Bus-Ring网络性能优于总线网。
This paper introduces a new local network architecture -Bus-Ring and media access control method-TOKEN CAPTURE, the new network is still the shape of the ring structure, but each node’s interface processor has a tri-state door next to In this way, the message passes through each node with no delay, and the message is received by all the nodes in the network at the same time. Based on this network structure, token interception control can be implemented. In the network, the token is not one by one Instead, the nodes sending the message intercept the token in the loop and the snooping and collision detection technique in token establishment, as in CSMA / CD. In this way, when the network is lightly loaded, the CSMA / CD mode, using TOKEN CAPTURE mode when overloaded, this new type of network increases the flexibility of the delivery mode and reduces the delay and token delivery time of the packet passing through each node. Computer simulation results show that Bus-Ring Network performance is better than the bus network.