Carrier resource distribution method and device based on broadband OFDM power line communication

Abstract

The invention discloses a carrier resource distribution method and device based on broadband OFDM power line communication. At least one cluster node CL is included, and each cluster node is connectedwith M leaf nodes LFm; the method comprises the following steps: firstly, the carrier resource is sold to M leaf nodes by taking the cluster node as an auctioneer of the carrier resource, and the bandwidth distributed for the cluster node is Btot; secondly, the M leaf nodes are used as bidders to acquire a channel for transmitting data by mutually competing the carrier resource of the cluster node, and the bandwidth bidding price submitted by the leaf node LFm is bm; and then, the cluster node distributes the bandwidth bm for the leaf node LFm according to the bandwidth bidding price submitted by the leaf node LFm. Through the distribution method and device disclosed by the invention, the carrier distribution fairness and the resource utilization maximation in the broadband OFDM power line communication are solved, the good resource sharing between the cluster node and the leaf nodes is realized, and the utilization factor of the carrier reaches the maximum.

Description

technical field [0001] The present invention relates to the field of power line communication, in particular to a carrier resource allocation method and device based on broadband OFDM power line communication. Background technique [0002] Power Line Carrier (PLC) communication technology is a unique communication method for power systems, that is, it uses existing power lines to transmit signals through carrier waves. Now, power line communication is the mainstream technology in electrical construction, and the energy data acquisition system based on it has been widely adopted in many cities in China. The remote channel adopts special wireless network, GPRS, CDMA, optical fiber, dial-up and other technologies, and the local channel adopts RS-485, low-voltage narrowband PLC, low-voltage broadband PLC, and micro-power wireless communication. Among them, low-voltage power line carrier communication is a special communication method that uses low-voltage distribution lines as ...

AI Technical Summary

Problems solved by technology

[0004] In the carrier resource allocation of broadband OFDM power line communication at the present stage, there is a bandwidth resource allocation based on relay auctions, but this solution only discusses the situation that one collector corresponds to one electric meter, and does not consider the increasing demand for electric meters and limited carrier resources. the contradiction between

There is also bandwidth resource allocation based on VCG auctions. The concentrator in the network should provide a certain degree of QoS guarantee in terms of fairness. However, the method based on VCG does not consider fairness performance, which is obviously undesirable in the resource allocation environment.

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