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Dual-mode inter-mode collaboration method and power Internet of Things network system

An inter-mode and network technology, applied in the dual-mode inter-mode coordination method and a power Internet of Things network system, can solve the problem of long message retransmission mechanism, failure to send command frames and data frames, and failure to send beacon frames and network access requests to achieve the effect of improving the reliability of network data transmission, realizing command frame forwarding, and improving the reliability of network networking

Active Publication Date: 2021-11-19
BEIJING SMARTCHIP MICROELECTRONICS TECH COMPANY +3
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, HPLC also has the disadvantages of complex channels, large interference, and strong time-varying parameters, and is prone to the problem of unstable HPLC channels. There are still shortcomings in some application scenarios, such as high-urgency emergency repair scenarios.
[0003] The existing dual-network dual-mode technology has the following problems: First, the networking between HPLC and RF lacks coordination
When the communication of one mode is limited, it is impossible to send beacon frames and network access requests through another mode
In addition, because the beacon frame is sent by broadcast, it may happen that the link between the upper and lower nodes is unstable, and the lower node does not receive the beacon frame (such as RF beacon frame) sent by the upper node, which will cause the lower node Unable to trigger incoming request
Second, there may be inconsistencies between the link status (such as communication success rate, link signal-to-noise ratio or RSSI value) collected by the original source node (such as CCO) and the actual link status. Failed to send on a relay node
Third, the message retransmission mechanism of command frames and data frames takes too long. Once the message fails to be sent during the routing process, the original source node can only rely on timeout to judge the routing failure, which makes the service delay relatively large.

Method used

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  • Dual-mode inter-mode collaboration method and power Internet of Things network system
  • Dual-mode inter-mode collaboration method and power Internet of Things network system
  • Dual-mode inter-mode collaboration method and power Internet of Things network system

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0150] This embodiment is an embodiment of direct communication between the HPLC module and the wireless module (RF module) to send the beacon frame. Specifically, if the RF link fails to send, the RF beacon frame is forwarded through the HPLC link for detailed description. Such as image 3 As shown, the RF link of node 1 fails to send, and the RF data link layer requests the HPLC data link layer to forward the inter-mode information unit, carrying the destination address (all F), the address of this node, the length and mode of the inter-mode information unit The inter-mode information unit includes the original destination address type, original destination address, original source address type, original source address, SDU byte count, SDU, etc., wherein the RF beacon frame is included in the SDU.

[0151] After the HPLC data link layer of node 1 receives the request, it judges that the "destination address" is all F, then uses the inter-module information unit as an SDU, co...

Embodiment 2

[0155] This embodiment is an embodiment of direct communication between the HPLC module and the wireless module (RF module) to send command frames or data frames. Specifically, if the HPLC link fails to send, the data frame is forwarded through the RF link for detailed description. Such as Figure 4 As shown, the HPLC link of node 1 fails to send, and the HPLC data link layer requests the RF data link layer to forward the inter-module information unit, carrying the destination address (the address of the destination node to which the HPLC module requests the RF module to be forwarded), the current node Address, inter-mode information unit length and inter-mode information unit, where the inter-mode information unit includes SDU, SDU length, original destination address, original source address, SDU type, link identifier and RF optimal route carried by the original source node, etc. , where the HPLC data frame is contained in the SDU.

[0156] After receiving the request, the ...

Embodiment 3

[0161] This embodiment is an embodiment of sending a beacon frame through indirect communication between the HPLC module and the wireless module (RF module) through the inter-module scheduling layer. Specifically, if the HPLC link fails to send, the beacon frame is forwarded through the RF link for details. illustrate. Such as Image 6 As shown, the RF link attempt of node 1 fails to send, and the RF data link layer sends the "NLDE-DMode-DATA.indication" primitive to the intermodal scheduling layer. The "NLDE-DMode-DATA.indication" primitive is an extension to the existing RF protocol, and carries the following information: destination address (fill in F), local node address, length of the inter-mode information unit, and the inter-mode information unit, where the mode The inter-information unit includes original destination address type, original destination address, original source address type, original source address, SDU byte count, SDU, etc., wherein the RF beacon frame...

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Abstract

The invention provides a dual-mode inter-mode collaboration method and an electric power Internet of Things network system, which belong to the field of electric power Internet of Things wireless communication. The method includes: if the module A of the sending node is disconnected through the communication of the A link, the sending node performs inter-module coordination, and requests the module B of the sending node to construct a network frame and forward it through the B link, and the type of the network frame is module After the receiving node receives the inter-module forwarding frame through module B, it performs inter-module coordination and sends the inter-module forwarding frame to module A of the receiving node, so that module A of the receiving node obtains communication data. The method provides cooperative networking function, realizes inter-module beacon frame and networking command frame forwarding, improves network networking reliability; provides single-hop service transmission path backup and selection function, and realizes single-hop inter-mode data frame and command frame forwarding , Improve the reliability of network data transmission.

Description

technical field [0001] The present invention relates to the field of electric power Internet of Things wireless communication, in particular to a dual-mode inter-mode collaboration method and an electric power Internet of Things network system. Background technique [0002] The local communication network is an important part of the power Internet of Things. Narrowband PLC in the early stage of local communication had problems such as not supporting interconnection, slow transmission speed, and inability to cope with crosstalk. It has been gradually replaced by high-speed PLC (HPLC, high-speed powerline communication) communication, and has been widely used in the field of meter reading. However, HPLC also has the disadvantages of complex channels, large interference, and strong time-varying parameters. It is prone to the problem of unstable HPLC channels, and there are still shortcomings in some application scenarios, such as high-urgency emergency repair scenarios. In ord...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04L12/711H04L12/703G16Y10/35H04L45/247H04L45/28
CPCH04L45/22H04L45/28G16Y10/35
Inventor 赵春平袁剑黄其华
Owner BEIJING SMARTCHIP MICROELECTRONICS TECH COMPANY
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