Dynamic power line carrier communication channel allocation method based on TDMA and CSMA/CA

A technology of power line carrier and communication channel, which is applied in the field of communication, can solve the problems of low channel utilization and poor adaptability, and achieve good network performance, small network conflicts and good adaptability

Inactive Publication Date: 2018-04-17
HARBIN INST OF TECH
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  • Description
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Problems solved by technology

[0008] The present invention is to solve the problem of poor adaptability and low channel utilization rate of the existing power line carrier co...

Method used

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  • Dynamic power line carrier communication channel allocation method based on TDMA and CSMA/CA
  • Dynamic power line carrier communication channel allocation method based on TDMA and CSMA/CA
  • Dynamic power line carrier communication channel allocation method based on TDMA and CSMA/CA

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specific Embodiment

[0059] Construct three typical physical network topologies, such as Figure 4 As shown, the black solid node is CCO. From Type 1 to Type 3, the concentration of nodes in the network is from high to low, and the network structure is from simple to complex.

[0060] After all the nodes are powered on, the CCO periodically broadcasts the status of the network, and other nodes join the network through direct or indirect registration in accordance with the PRIME (Power Line Intelligent Metering Evolution) standard, and the CCO joins the network according to the child nodes The sequence assigns each child node a separate time slot respectively. During the networking and the communication process after the networking is completed, if a child node does not send a request in its own main time slot, other nodes that arrive at the main node frame listening period and have a sending request can compete in the empty time slot channel.

[0061] Set the priority of the child nodes in the ...

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Abstract

The invention provides a dynamic power line carrier communication channel allocation method based on TDMA and CSMA/CA, and relates to the communication field. The method is used for solving the problems that an existing power line carrier communication channel allocation method is poor in adaptivity and low in channel utilization rate. According to the dynamic power line carrier communication channel allocation method, the TDMA protocol is utilized to allocate channels to all nodes in a communication network, and when an idle time slot is generated after channel allocation is completed, the CSMA/CA protocol is utilized to allocate channels to non-main nodes. The advantages of TDMA and the advantages of CSMA/CA are combined, and the channel utilization rate is increased in the real-time changing process of the network load while network conflicts are reduced. The dynamic power line carrier communication channel allocation method can be applied to multiple fields such as smart home, building automation and rail traffic.

Description

technical field [0001] The invention belongs to the communication field, in particular to a method for dynamically allocating power line carrier communication channels. Background technique [0002] At present, among the network resources, the power transmission and distribution network has the widest coverage and has the function of data communication. Compared with other communication methods, the power line-based communication technology has the biggest advantages of convenient connection, wide distribution, convenient development and no maintenance. Using low-voltage power line network for communication can be applied in smart home, remote meter reading, building automation and other fields. However, the topological structure of the power line communication channel and network has a strong time-varying nature, which requires the design of a matching channel dynamic allocation method. [0003] The existing power line carrier communication channel allocation method has t...

Claims

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Application Information

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IPC IPC(8): H04L5/00H04B3/54
CPCH04L5/003H04B3/542
Inventor 刘晓胜邹德琴张佳瑞徐殿国
Owner HARBIN INST OF TECH
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