Dual-mode inter-mode cooperation method and electric Internet of Things 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 failure of command frame and data frame routing transmission, the long time of message retransmission mechanism, and the inability to send beacon frames and network access requests to achieve the effect of forwarding command frames, improving the reliability of network data transmission, and improving the reliability of network networking

Active Publication Date: 2021-10-19
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 cooperation method and electric Internet of Things system
  • Dual-mode inter-mode cooperation method and electric Internet of Things system
  • Dual-mode inter-mode cooperation method and electric Internet of Things 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. like 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, const...

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. like 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 RF ...

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. like 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 is...

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Abstract

The invention provides a dual-mode inter-mode cooperation method and an electric Internet of Things system, and belongs to the field of electric Internet of Things wireless communication. The method comprises the steps that if a mode A of a sending node is disconnected through communication of a link A, the sending node performs inter-mode cooperation, requests a mode B of the sending node to construct a network frame and forwards the network frame through a link B, wherein the type of the network frame is an inter-mode forwarding frame; and after a receiving node receives the inter-mode forwarding frame through the mode B, inter-mode cooperation is carried out, and the inter-mode forwarding frame is sent to the mode A of the receiving node, so that the mode A of the receiving node obtains communication data. According to the method, a collaborative networking function is provided, inter-mode beacon frame and networking command frame forwarding is realized, and the network networking reliability is improved; and a single-hop service transmission path backup and a selection function is provided, data frame and command frame forwarding between single-hop modes is realized, and the network data transmission reliability is improved.

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 Applications(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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