Ring topology data bus bandwidth reuse method
A data bus, ring topology technology, applied in the field of communication, to achieve the effect of improving bandwidth utilization
Inactive Publication Date: 2006-02-22
SHANGHAI JIAO TONG UNIV
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Therefore, this bandwidth reuse function has certain limitations
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Embodiment 1
[0012] Such as figure 1 As shown, in the ring data bus, the order of nodes is configured according to the method of source node 1-source node 2-destination node 1-source node 3-destination node 2-destination node 3, wherein nodes 1 and 3 occupy time slot 1, and node 2 occupies time slot 2, information is sent from source node 1 to destination node 1 and occupies time slot 1, when the time slot arrives at source node 3, source node 3 clears the data of the time slot, and reuses the time slot to send data to the destination node 3. This example allows two pairs of nodes to reuse time slot 1 to transmit data, which actually doubles the network bandwidth from node to node.
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Disclosed a reusing method of bandwidth of loop topological data bus, belongs to the communication technology. According to the structure of loop topological data bus, via the arrangement of data bus nodes, in the data transmission of loop topological network, the data transmitted in the time slot is deleted after the data is transmitted from the originating node to the destination node, so the nodes after the destination node can use the data in said time slot repeatedly, to improve the utilization of bandwidth of data bus. The nodes of loop data bus are arranged as originating node-destination node-originating node-destination node and the like. The invention provides a reusing method of bandwidth of loop topological data bus, and it can improve the utilization of data bus effectively by the reasonable arrangement of data bus nodes and the new method of time slot distribution. The invention can be applied in present variable loop data bus.
Description
technical field [0001] The invention relates to a method in the technical field of communication, in particular to a method for reusing the bandwidth of a ring topology data bus. Background technique [0002] The data bus, also known as the data trunk line, is a communication system composed of a bus communication control device, a transmission medium, a network topology, and a communication protocol. Bandwidth reuse refers to whether the network has the ability to transmit additional services in addition to the specified work services. The topology of the data bus includes bus, ring, star, etc., the most common of which is the ring topology. In the ring topology, each node is connected to the adjacent node with a point-to-point link to form a closed loop, and the signal in the ring is transmitted in one direction. After the information goes around the ring in one direction, it returns to the original sending node and is then discarded. In a ring topology, failure of a no...
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Inventor 宋宁李孝鹏
Owner SHANGHAI JIAO TONG UNIV