Broadband power line communication resource allocation method and device for electricity information collection

Abstract

The invention provides a broadband power line communication resource allocation method for electricity utilization information acquisition. The method comprises the steps that power line channel characteristic parameters of an electricity utilization information acquisition terminal are acquired; subcarrier bit capacity is estimated; subcarrier resource is allocated to gateways; the corresponding gateways are allocated to terminals according to the minimum subcarrier optimization criterion; the gateways allocate the subcarrier resource to the subordinating terminals; and the terminals transmit the electricity utilization information data of the terminals according to the allocated subcarrier resource. The invention also provides a device applying the resource allocation method. The device comprises a power line channel state acquisition module, a subcarrier bit capacity estimation module, a subcarrier gateway allocation module, a terminal gateway allocation module, a gateway terminal subcarrier allocation module and an electricity utilization information transmission module which are connected in turn. Channel gain of an electricity utilization information acquisition terminal channel between different gateways is considered so that resource allocation can be optimized, influence of noise on communication throughput, transmitting power and delay service quality can be overcome, and communication effectiveness can be enhanced.

Description

technical field [0001] The invention specifically relates to a broadband power line communication resource allocation method and device for collecting electricity information. Background technique [0002] Broadband Power Line Communication (BPLC) technology is a high-speed data communication technology that uses power lines as the medium. In view of the unique noise and attenuation environment of the power line channel, it brings new technical problems to high-speed and reliable data transmission. Orthogonal Frequency Division Multiplexing (OFDM) modulation technology has many advantages, and can construct broadband power line communication orthogonal Frequency division multiplexing (BPLC-OFDM) system is used to realize effective communication support for power consumption information collection business. The broadband power line communication OFDM system for electricity information collection divides the available frequency band of the power line channel into several sub-...

AI Technical Summary

Problems solved by technology

[0003] For the low-voltage broadband power line communication network with the traditional single gateway structure, the power consumption information collection terminal can only realize the transmission of power consumption information data to the power consumption information collection master station through a single gateway

When there is time-varying noise interference in the power line communication channel, the traditional single-gateway resource allocation method of the BPLC-OFDM system has the problems of high transmission power and long service delay.

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