Active routing method and device

An active and routing technology, applied in digital transmission systems, data exchange networks, electrical components, etc., can solve problems such as poor network stability, achieve the effect of reducing overhead and solving network instability

Active Publication Date: 2015-10-07
BEIJING SMARTCHIP MICROELECTRONICS TECH COMPANY +3
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The purpose of the present invention is to overcome the defect that the routing technology in the prior art is greatly affected ...

Method used

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  • Active routing method and device

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0094] In Embodiment 1, topology maintenance includes two cases of differential update and periodic update. For details, see image 3 As shown, including step 301-:

[0095] Step 301: Scan the topology table to determine node expiration time and link expiration time respectively.

[0096] Step 302: Judging whether the node expiration time is less than the current time, if the node expiration time is less than the current time, proceed to step 303, otherwise proceed to step 310.

[0097] Step 303: Delete the corresponding node in the topology table.

[0098] Step 304: Determine whether the link expiration time is less than the current time. If the link expiration time is less than the current time, go to step 305; otherwise, go to step 310.

[0099] Step 305: Delete the corresponding link in the topology table.

[0100] Step 306: Re-determine a new source node tree rooted at the local node according to the changed topology table, recalculate routes from the local node to oth...

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Abstract

The invention discloses an active routing method and device, and the method comprises the steps: broadcasting a first greeting message to a neighbor node, and receiving a second greeting message at the same time, wherein the second greeting message is broadcasted by the neighbor node and comprises an address identification of the neighbor node; recording the address identification of the neighbor node, and updating a neighbor node table of a local node; broadcasting topology subtree information to the neighbor node; updating a topology table after routing convergence, and determining a local routing table; extracting a destination node when a data package is received, and determining the shortest path of the destination node according to the local routing table; transmitting the data package to a next jump node, indicating the next jump node to continuously transmit a data package according to the shortest path of the destination node till the data package reaches the destination node. The method can reduce the cost in network messages, can find the change of nodes and network state timely and quickly, and better solves a technical problem of network instability caused by a complex severe channel characteristic.

Description

technical field [0001] The present invention relates to the technical field of routing in the field of power line carrier communication, in particular to an active routing method and device. Background technique [0002] As a unique communication technology in the power industry, Power Line Communications (PLC) technology has the advantages of wide coverage and low cost, and has been widely used in power user information collection systems, smart homes and other fields. PLC technology can be divided into narrowband PLC and broadband PLC. Among them, Broadband Power Line Communication (BPLC), referred to as BPLC, refers to power line carrier communication with a bandwidth limited between 2-30 MHz and a communication rate usually above 1 Mbps. Compared with narrowband power carrier (PLC) technology, broadband power carrier technology has many advantages such as high speed, anti-noise, long transmission distance, and high coverage. main carrier technology. [0003] However, ...

Claims

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Application Information

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IPC IPC(8): H04L12/721H04L12/751H04L45/02
CPCH04L45/02H04L45/12H04B3/54
Inventor 白晖峰王东山王立城高飞胡科军
Owner BEIJING SMARTCHIP MICROELECTRONICS TECH COMPANY
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