E1 double-loop network with loop self-healing function

A dual-ring network and functional technology, applied in the field of communication, can solve problems such as interruption of ring network communication

Active Publication Date: 2017-06-23
广州广哈通信股份有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Benefits of technology

In this patented technology there are two types of networks: one where all communication between devices takes place through an interconnected path called a circuit (E1) while another type uses only one way for transmission instead of multiple paths like either route from device A to B or even across different parts of the world. These systems have unique feature such as redundancy and fail-over capabilities which ensure reliable connections during faults without interrupting any further communications.

Problems solved by technology

The technical problem addressed in this patented text relates to how reliable telecommunication networks are designed without interruptions caused when one section becomes unusable due to any issues such as signal loss during faulty wiring connections between sections.

Method used

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  • E1 double-loop network with loop self-healing function
  • E1 double-loop network with loop self-healing function
  • E1 double-loop network with loop self-healing function

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0033] Such as figure 1 As shown, an E1 double-ring network with ring self-healing function. It includes a number of active nodes connected sequentially in a loop.

[0034] Each active node is configured with a first E1 interface and a second E1 interface. The receiving interface (rx0) of the first E1 interface of each active node is connected to the second active node of the previous active node (the previous active node refers to the active node that sends data to this active node through the active ring). The sending interface (tx1) of the E1 interface is cyclically connected with each active node to form the active ring 10 . And, the receiving interface (rx1) of the second E1 interface of each active node is connected to the sending interface (tx0) of the first E1 interface of the previous active node, and each active node is connected in a loop to form the backup ring 20 .

[0035] This active node ("this active node" said by the present invention refers to any active ...

Embodiment 2

[0053] Such as Figure 5 As shown, the data loopback method described in Embodiment 1 can also be used in the case where the active node of the ring network fails. However, if multiple non-adjacent active nodes in the ring network fail, the data loopback method will divide the ring network into multiple independent small ring networks.

[0054] Such as Figure 6 As shown, on the basis of Embodiment 1, each active node in this embodiment further includes a first multi-choice switch 14 and a second multi-choice switch 15 . The fixed terminal (one end of the switch that cannot be switched) of the first multi-choice switch 14 is connected with the receiving interface (rx0) of the first E1 interface of the next active node. The fixed terminal of the second multi-choice switch 15 is connected with the receiving interface (rx1) of the second E1 interface of the previous active node.

[0055] The present invention adopts the first multi-choice switch 14 and the second multi-choice ...

Embodiment 3

[0060] In Embodiment 2, when a node failure occurs in the active node, the failed active node will exit the ring network due to the bypass function of the one-to-many switch, so as to realize the self-healing of the ring network. At this time, the failed active node cannot communicate with other active nodes on the ring. Therefore, in this embodiment, the redundancy of active and standby nodes is adopted to increase the reliability of the ring network.

[0061] Specifically, such as Figure 8 As shown, the ring network also includes several standby nodes. The standby node has the same structure as the active node. Each standby node is connected in parallel with each active node through the serial port to realize active-standby redundancy. The standby node is used to replace the work of the active node in parallel with it when the active node fails.

[0062] Such as Figure 9 As shown, the difference from Embodiment 2 is that the first multi-choice switch 14 and the second...

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Abstract

The invention discloses an E1 double-loop network with a loop self-healing function. A current main node receives data of a previous main node through a first E1 interface, and a second E1 interface sends processed data to a later main node. The current main node receives data of the later main node through the second E1 interface. The received data is transmitted to the first E1 interface, and the first E1 interface sends the transmitted data to the previous main node. When a link fails, the previous main node loops back the data sent by the second E1 interface into the data received by the second E1 interface, and the later main node loops back the data sent by the first E1 interface into the data received by the first E1 interface. Through connection of the first E1 interface and the second E1 interface, the nodes of the loop network serve as main and spare loops opposite in direction of data flow. The data of the main loop is looped back to the spare loop at the previous node of a faulty link, the data of the spare loop is transmitted reversely to the later node of the faulty link, and therefore, it is ensured that the communication is not interrupted.

Description

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Claims

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Application Information

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Owner 广州广哈通信股份有限公司
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