Networking method for power line communication based on asymmetric channel

Abstract

The invention discloses a networking method for power line communication based on an asymmetric channel, which comprises the following steps: starting from a central node to perform networking step bystep until all terminal nodes complete current-level networking to obtain an initialized topology table of a power line communication network, wherein the topology table comprises superior node information, uplink channel quality information and downlink channel quality information of all nodes; each terminal node selects the superior node with optimal bidirectional channel quality information tobe determined as the final superior node, which is updated to the topology table, according to own uplink channel quality information and downlink channel quality information in the topology table. The networking method can perform power communication networking in a more convenient and more economical way of saving communication resources, and a more stable and reliable communication network canbe provided.

Description

technical field [0001] The invention relates to the field of power line carrier communication, in particular to a networking method for power line communication based on asymmetric channels. Background technique [0002] Power line carrier (PLC for short) is the main means of communication in the construction of the current domestic electricity consumption information collection system. In the electricity consumption information collection system, this method is mainly used to complete the communication between residential users and distribution transformers, and to complete data collection and cost control. and other functional applications. [0003] At present, most power line carrier communication networks in the market adopt dynamic automatic relay mode. According to the specific networking plan, the address is allocated according to the relay level and response time of the power line carrier communication module at the meter end, and the automatic monitoring is perform...

AI Technical Summary

Problems solved by technology

Specifically, the current networking method mainly adopts the flooding algorithm, that is, for any routing node, when a non-repeated broadcast message is received, it will spread the message outward step by step, and finally traverse the entire network to realize Information coverage, this method is relatively easy to generate a large number of repeated messages, which wastes bandwidth and causes a large number of conflicts and collisions at the same time, reducing the success rate of message transmission

Moreover, the mechanism adopts the mechanism of "network-wide monitoring and conflict avoidance", and gradually covers the entire network through random search without knowing the network topology of the power grid. This technology will lead to low relay efficiency, and for "Islands" that cannot form links cannot be networked, which reduces the reliability of communication

In the practical application of power line carrier technology, the above problems will be manifested as long time for meter reading and low success rate.

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