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A fast-confirmed lorawan system and its implementation method

An implementation method and fast technology, applied in transmission systems, digital transmission systems, error prevention, etc., can solve problems such as difficult time-sensitive applications, achieve the effects of shortening data confirmation time, reliable data transmission, and speeding up the confirmation process

Active Publication Date: 2020-04-24
ASR MICROELECTRONICS (SHENZHEN) CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The total time of this RECEIVE_DELAY2 plus ACK_TIMEOUT is about 4s, which is unacceptable for time-sensitive applications

Method used

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  • A fast-confirmed lorawan system and its implementation method
  • A fast-confirmed lorawan system and its implementation method
  • A fast-confirmed lorawan system and its implementation method

Examples

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Embodiment Construction

[0031] see image 3 , which is the implementation method of the LoRaWAN system quickly confirmed by this application, which includes the following steps.

[0032] Step S302: The gateway that forwards downlink data to node A last time is taken as the main gateway of node A. The downlink data is sent by the server to node A, and needs to be transferred by only one gateway.

[0033] For example, node A sends a Join Request message to the server through one or more gateways, and the server sends a Join Accept message to node A through gateway B. At this time, gateway B is the primary gateway of node A.

[0034] For another example, node A sends a Confirmed Data Up message to the server through one or more gateways, and the server sends response information to node A through gateway C. At this time, gateway C is the master gateway of node A.

[0035] Step S304: Node A sends uplink data to the server.

[0036] Step S306: After receiving the uplink data, the master gateway of no...

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Abstract

The invention discloses an implementation method of a LoRaWAN system capable of achieving quick confirmation. The implementation method comprises the steps that S302, a gateway which forwards downlinkdata to a node A most recently serves as a main gateway of the node A; S304, the node A sends uplink data to a server; S306, the main gateway of the node A immediately replies an LACK frame to the node A after receiving the uplink data, and forwards the uplink data to a server; s308, if the node A receives the LACK frame replied by the main gateway within a preset time, whether the LACK frame corresponds to the previously sent uplink data or not is judged; if not, the step S310 is executed; if the node A does not receive the LACK frame within the preset time, the step S310 is executed; and S310, the node A retransmits the uplink data to the server after delaying for a period of time, and returns to the step S306. According to the invention, the node can quickly confirm whether the previously sent uplink data is correctly received by the main gateway, so that the data transmission is more reliable.

Description

technical field [0001] The present application relates to a LoRaWAN system, in particular to a fast confirmation scheme for confirming uplink frames in the LoRaWAN system. Background technique [0002] LoRaWAN (Long Range Wide Area Network) system is a long-distance, low-power wide area network. Its network architecture includes nodes (End Nodes), gateways (Gateway) and servers, and servers are divided into network servers that directly communicate with gateways and application servers located at the back end of network servers. LoRa (Long Range, long-distance) technology is used for wireless communication between nodes and gateways. The gateway and the server use the TCP / IP protocol to communicate. The gateway forwards the LoRaWAN protocol data between the node and the server. [0003] In the LoRaWAN system, the node sends data to the server through one or more gateways, which is called uplink, and the server only sends data to the uniquely determined node through one ga...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04L1/16H04L1/18
CPCH04L1/1607H04L1/1893
Inventor 郝瑞林刘大伟叶红亮
Owner ASR MICROELECTRONICS (SHENZHEN) CO LTD
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