Power-saving method of terminal node of power line communication system

Abstract

The present invention seeks to protect a power-saving method of a terminal node of a power line communication system. Specific power-saving functions are controlled and managed by a central coordinator in a unified manner. Power-saving modes of all other coordinators of the central coordinator comprise three modes: a sleeping mode, an awakening mode and an activating mode. The coordinators in the sleeping mode receive and send no data, and the whole coordinator is in a power-off state. The coordinators in the awakening mode analyze a beacon frame and detect whether other coordinators send data requests. The coordinators in the awakening mode receive data but do not send data. When receiving coordinator data sent from other coordinators, the coordinators in the awakening mode enter the activating mode immediately. The coordinators in the activating mode have all functions like data receiving and sending.

Description

technical field [0001] The invention belongs to the broadband power carrier communication technology, and mainly proposes a power saving scheme for each device in the broadband power carrier communication system. Background technique [0002] Broadband carrier communication (abbreviation: PLC) network uses low-voltage power lines as the communication medium to realize the convergence, transmission and interaction of low-voltage power users' electricity consumption information. According to the structural characteristics of the power line, the topology tree structure of the broadband carrier communication network, such as figure 1 shown. This structure is a multi-level network with central control site (referred to as: CCO) as the center, proxy control site (abbreviated as: PCO) as the relay, and connecting all sites (abbreviated as STA). The sites without sub-sites are also called terminals. site. [0003] In the actual broadband carrier communication network topology, th...

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Problems solved by technology

However, if the work site does not adopt the power-saving mechanism and there are a large number of work sites in the network, the overall power consumption will be relatively large, which is not conducive to energy saving. Secondly, the electronic components on the site will work in real time, which also leads to It is easy to age. After a period of use, the probability of abnormal operation of the site increases, and the workload of repair or replacement is also very large, which increases the cost of operation and maintenance.

[0005] Because the station routing relationship of the PLC system is in a tree structure, this brings certain difficulties to power saving. In actual operation, the system requires each station to periodically report the discovery list to maintain and optimize the routing table of the PLC system. Therefore, The central control site, agent control site, and end site send data at random times. At this time, the target site or proxy site receiving data may be in a power-saving state. If the sending site is not sure of the power-saving state of the target site and the sites on the path , then it will result in failure to send data

However, it is almost impossible to send station records or detect the power saving status of stations passing through the communication route.

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