Multiple user communication method of distribution network

A technology for multi-user communication and distribution network, applied in the field of multi-user communication in distribution network

Inactive Publication Date: 2005-03-02
TSINGHUA UNIV
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Problems solved by technology

This effect or coupling makes it possible for only one pair of users to communicate at the same time in the combination of CSMA and point-to-point OFDM communication.
[0007] From another perspective, the distribution network itself is a "huge" communication network, and the existing distribution network communication methods have not really utilized the network resources of the distribution network to achieve multi-user communication in the distribution network.

Method used

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  • Multiple user communication method of distribution network

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Embodiment Construction

[0034] The distribution network multi-user communication method proposed by the present invention first detects the occupancy state of the multi-user vector channel in the distribution network in real time; describes the three-phase circuit in the distribution network as a multi-user vector channel; decomposes the vector channel into a scalar channel; Real-time bit allocation is performed on the scalar channel according to the channel occupancy state detected in real time.

[0035] In the above method, the method for real-time detection of multi-user vector channel occupancy status includes the following steps:

[0036] (1) The user in the distribution network obtains the physical phase information of the user through real-time sampling of the power signal;

[0037] (2) The above-mentioned user detects whether there is an in-phase user occupying the channel. If there is no in-phase user occupying the channel, the above-mentioned user occupies the channel. If there is an in-pha...

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Abstract

This invention relates to a distribution network multiuser communication method which tests multiuser vector channel occupying state in the network by real-time, describes the three-phase circuit into multiuser vector channels to be resolved to scalar channels to be distributed in bit according to the real-time tested channel occupation state. The method equalizes the multiuser distribution network to multiuser communication vector channels to be resolved and get equivalent point-to-point channel model to realize dynamic bit distribution so as to realize dynamic bit distribution and multiuser high efficient communication.

Description

technical field [0001] The invention relates to a multi-user communication method in a distribution network, which belongs to the technical field of electrical engineering. Background technique [0002] The use of power lines as the signal transmission medium to realize communication is a technology that research and industrial departments such as electric power, communication, and network in various countries have been devoting to research and development. Power line communication is usually divided according to the voltage level of the power network, which can be divided into high voltage power line communication (above 100KV), medium voltage power line communication (1KV~100KV) and low voltage power line communication (below 1kV, 380V / 220V). As far as the characteristics of the power line communication channel are concerned, the high-voltage power line communication environment is the best, followed by the medium-voltage power line environment, and the worst is the low-vo...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04B3/54
Inventor 郭静波
Owner TSINGHUA UNIV
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