Low-delay and low-power-consumption downlink communication mechanism based on Lora

A communication mechanism and low power consumption technology, applied in the field of communication, can solve the problems of not being able to support active downlink communication, increasing terminal power consumption, and not being able to meet low power consumption applications, so as to reduce node power consumption, increase business cycle, reduce The effect of power consumption

Active Publication Date: 2020-05-08
CHINA KEY SYST & INTEGRATED CIRCUIT
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Problems solved by technology

Among them, CLASS A terminals have the lowest power consumption, but they can only support downlink and uplink transmission, and cannot support active downlink communication. CLASS B and CLASS C support active downlink, but greatly increase the power consumption of the terminal, which cannot meet low-power applications. scene

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  • Low-delay and low-power-consumption downlink communication mechanism based on Lora
  • Low-delay and low-power-consumption downlink communication mechanism based on Lora
  • Low-delay and low-power-consumption downlink communication mechanism based on Lora

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Embodiment Construction

[0049] The preferred embodiments of the present invention will be described below in conjunction with the accompanying drawings. It should be understood that the preferred embodiments described here are only used to illustrate and explain the present invention, and are not intended to limit the present invention.

[0050] In order to achieve the purpose of the present invention, a Lora-based downlink communication mechanism with low latency and low power consumption is provided in one of the embodiments of the present invention, including the following steps:

[0051] S1. After the Lora gateway is powered on, the beacon frame is sent through the service channel, and the beacon frame sending cycle is BeaconPeriod; the registered Lora node regularly receives the beacon frame for synchronization to ensure that the clock error between the Lora node and the Lora gateway does not exceed 3ms;

[0052] S2. After the Lora node is powered on, it first initiates a network access request t...

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Abstract

The invention discloses a low-delay and low-power-consumption downlink communication mechanism based on Lora. The low-delay and low-power-consumption downlink communication mechanism comprises the following steps: S1, a Lora gateway issues a beacon frame through a service channel; Lora nodes which access the network receive beacon frames at regular time for synchronization; S2, the Lora nodes acquires information such as network beacon time, an address number under an allocated channel, a packet number, a channel radio frequency parameter and the like through the network access interaction information; and S3, calculating downlink interception reference time and an interception period according to the information obtained in the S2. The Lora chip is in the dormant state in other time periods except CAD interception and time sequence reception time periods, and an MCU is allowed to be dormant; if no other service needs to be executed, the MCU can enter a low-power-consumption mode, andtherefore power consumption of a communication module group is reduced to a great extent.

Description

technical field [0001] The invention belongs to the technical field of communication, and in particular relates to a Lora-based downlink communication mechanism with low delay and low power consumption. Background technique [0002] The Internet of Things provides a new dimension of communication for people in the field of information and communication technology. Low power consumption, wide coverage, large capacity, and low cost are the development directions of IoT technology. At the same time, intelligent IoT systems must also have elements such as perception, decision-making, and execution. [0003] Lora is a long-distance wireless communication technology that realizes ultra-long-distance wireless communication under low power consumption conditions. LoraWan is a low-power wide-area network communication protocol specification based on Lora technology launched by the Lora Alliance. The protocol divides terminals into three types: CLASS A, CLASS B, and CLASS C. Among t...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04W52/02
CPCH04W52/0216H04W52/0248Y02D30/70
Inventor 潘长城刘军唐健乔倪申翔杜存功郭皓捷刘峰严俊生
Owner CHINA KEY SYST & INTEGRATED CIRCUIT
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