A star‐type local area network having simultaneous multiple transmission capability
Tadao Saito, Hitosi Aida, Ichiro Inoue · Electronics and Communications in Japan (Part I Communications) · 1991
Abstract In the conventional header‐driven storageless LAN (HDSL), the simultaneous multiple transmission, in general, is impossible, which made it difficult to cope with the increase of the traffic due to the system expansion and other situations. This study proposes a star‐type LAN (multistar LAN) which realizes multiple simultaneous transmission by providing the center node with the multiple simultaneous switching function. In the multistar LAN, HDSL‐type communication is realized by the switching function of the center node. The assignment of the usage of the switching function is determined through the contention and arbitration among the data units sent from the grouped end node. This paper first outlines the structure and operation of the multistar LAN, and presents the theoretical and experimental evaluation of the traffic‐delay characteristics. The features of the multistar LAN features are that the delay for low traffic is small, the performance is less deteriorated for high traffic, and there is a flexibility in accommodating the increase of the traffic.