CN1738225A - Ring topology data bus bandwidth reuse method - Google Patents
Ring topology data bus bandwidth reuse method Download PDFInfo
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- CN1738225A CN1738225A CN 200510029307 CN200510029307A CN1738225A CN 1738225 A CN1738225 A CN 1738225A CN 200510029307 CN200510029307 CN 200510029307 CN 200510029307 A CN200510029307 A CN 200510029307A CN 1738225 A CN1738225 A CN 1738225A
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Abstract
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
What the present invention relates to is a kind of method of communication technical field, specifically is the method that a kind of ring topology data bus bandwidth utilizes again.
Background technology
Data/address bus claims data highway again, is the communication system that is made of bus communication control device, transmission medium, network topology structure and communication protocol etc.Bandwidth is utilized and is meant in the network except that transmitting specified Working service, whether possesses the ability that transmits extra traffic.That the topological structure of data/address bus has is always linear, annular, star etc., and wherein modal is ring topology.In the ring topology, each node links to each other with point-to-point link with next-door neighbour's node, forms a closed loop, signal one-way transmission in the ring.Information after one week of ring, is got back to former sending node along a direction, and is disallowable then.In ring topology, the fault of node or link may cause the paralysis of network.Cause the collapse of looped network for fear of link failure, a backup loop often is provided, promptly often adopt twin nuclei.In two fine unidirectional loop topological structures, professional optical fiber transmits identical service signal simultaneously with protection optical fiber, thereby does not have the ability that bandwidth is utilized again.And two-way ring topology all has the ability that bandwidth is utilized again, but will realize this ability, is to be cost with the complexity of sacrificing network survivability and switching operation, rerouting algorithm.For two-way ring topology, at loop just often, the protection optical fiber loop can be opened extra traffic, and when loop breaks down need switch the time, professional fiber-optic signal is switched to protection optical fiber, and the extra traffic in the protection optical fiber is with conductively-closed.Therefore, if data/address bus adopts two-way ring topology, the also ability that just under the normal situation of network, can provide bandwidth to utilize again.And two-way ring topology is compared with two fine unidirectional loop topological structures, needs more optical fiber and R-T unit, so system is also complicated and expensive more.
Find through literature search prior art, " SDH self-healing network and Self-healing Rings " article that Xie Bing etc. deliver at " communication technology " (the 9th phase of calendar year 2001 No.9pp:68-70), that introduces in this article that the unidirectional loop topological structure do not have a bandwidth utilizes function again, and two-way ring topology has the function that bandwidth is utilized again, but the function of utilizing again of this bandwidth is just can finish under the prerequisite that network does not break down.Therefore, there is certain limitation in the function of utilizing again of this bandwidth.
Summary of the invention
The objective of the invention is to data/address bus at existing loop network topological structure in existing deficiency aspect the bandwidth usage, propose the method that a kind of loop network topology data bus bandwidth utilizes again.It can be configured under the situation of two-way ring topology need not, just can increase exponentially the message transmission rate of node-to-node in the data/address bus.
The present invention is achieved by the following technical solutions, the present invention is directed to the data bus structure of present widely used ring topology, proposes a kind of new slot allocation method.In the method, reasonable disposition by the data/address bus node, data are in the transmission course of ring topology network, after information is sent to destination node from source node, pick out the data of transmitting in this time slot, therefore the node after the destination node can be reused this slot transmission data, thereby improves the bandwidth availability ratio of data/address bus.
In common ring topology, each node links to each other with point-to-point link with next-door neighbour's node, forms a closed loop, signal one-way transmission in the ring.Information after one week of ring, is got back to former sending node along a direction, and is disallowable then.In the present invention, node configuration to annular data/address bus adopts: source node-destination node-source node-destination node, the method configuration, after information is transferred to destination node from source node, this information shared time slot in transmission course will turn back to source node and just be cleared in common annular data/address bus, and in the present invention after information arrives destination node, the shared time slot of information is cleared at once, the source node of back can be reused this time slot like this, thereby increases exponentially the bandwidth availability ratio of data/address bus.
The present invention shares different time slots by different nodes and comes shared channel resources.The node of annular data/address bus is according to source node-destination node-source node-destination node ... method when configuration, the source node of reusing a certain time slot should be positioned at after the destination node that receives these time slot data.
The present invention proposes the method that a kind of data bus bandwidth of loop network topological structure is utilized again, by the reasonable disposition of data/address bus node and new slot allocation method, can effectively improve the bandwidth availability ratio of data/address bus.This method can be widely used in the current various annular data/address bus.
Description of drawings
Fig. 1 is node configuration of the present invention and time slot allocation schematic diagram
Embodiment
As shown in Figure 1, the present invention is applicable in the data/address bus of ring topology, in the method, reasonable disposition by the data/address bus economize on electricity, the node configuration that is data/address bus adopts: source node-destination node-source node-destination node, the method configuration, after information is sent to destination node from source node, the shared time slot of information is cleared at once, other source node after the destination node can use this time slot to send data at once, thereby the bandwidth that guarantees data/address bus can be reused the bandwidth availability ratio of raising data/address bus by other node.
Embodiment 1
As shown in Figure 1, in annular data/address bus, node sequence is according to the method configuration of source node 1-source node 2-destination node 1-source node 3-destination node 2-destination node 3, wherein node 1 and 3 takies time slot 1, node 2 takies time slot 2, and information sends to destination node 1 from source node 1 and takies time slot 1, when this time slot arrives source node 3, source node 3 is removed the data of this time slot, utilizes this time slot to send data to destination node 3 again.This example allows two pairs of nodes to reuse time slot 1 and transmits data, in fact the network bandwidth of node-to-node is doubled.
Claims (4)
1, the method utilized again of a kind of ring topology data bus bandwidth, it is characterized in that, data bus structure at ring topology, configuration by the data/address bus node, data after information is sent to destination node from source node, are picked out the data of transmitting in this time slot in the transmission course of ring topology network, node after the destination node can be reused this slot transmission data like this, thereby improves the bandwidth availability ratio of data/address bus.
2, the method utilized again of ring topology data bus bandwidth according to claim 1 is characterized in that, shares different time slots by each node and comes shared channel resources.
3, the method utilized again of ring topology data bus bandwidth according to claim 1 is characterized in that, the configuration of described node is adopted: source node-destination node-source node-destination node ..., the method configuration.
4, the method for utilizing again according to claim 1 or 3 described ring topology data bus bandwidths, it is characterized in that, the node of annular data/address bus is according to source node-destination node-source node-destination node ... method when configuration, the source node of reusing a certain time slot should be positioned at after the destination node that receives these time slot data.
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| CN 200510029307 CN1738225A (en) | 2005-09-01 | 2005-09-01 | Ring topology data bus bandwidth reuse method |
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| CN 200510029307 CN1738225A (en) | 2005-09-01 | 2005-09-01 | Ring topology data bus bandwidth reuse method |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101420380B (en) * | 2008-11-28 | 2012-11-14 | 西安邮电学院 | Double-layer double-loop on chip network topology construction |
| CN101822000B (en) * | 2007-08-07 | 2012-12-12 | 诺基亚西门子通信公司 | Method to be run in and device of a network as well as communication system comprising such device |
| CN105681214A (en) * | 2015-12-28 | 2016-06-15 | 无锡城市云计算中心有限公司 | Large-scale network transmission optimization method and system |
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2005
- 2005-09-01 CN CN 200510029307 patent/CN1738225A/en active Pending
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101822000B (en) * | 2007-08-07 | 2012-12-12 | 诺基亚西门子通信公司 | Method to be run in and device of a network as well as communication system comprising such device |
| CN101420380B (en) * | 2008-11-28 | 2012-11-14 | 西安邮电学院 | Double-layer double-loop on chip network topology construction |
| CN105681214A (en) * | 2015-12-28 | 2016-06-15 | 无锡城市云计算中心有限公司 | Large-scale network transmission optimization method and system |
| CN105681214B (en) * | 2015-12-28 | 2018-11-27 | 无锡城市云计算中心有限公司 | A kind of large scale network transmission optimization method and system |
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Open date: 20060222 |