Relay Device for LoRa Class B Mode Signal Forwarding
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Solution Overview
Problem
Conventional LoRa network systems face challenges in maintaining communication between Class B mode terminals and base stations due to signal attenuation or excessive distance, leading to failed data transmission.
Innovation Solution
Implementing a relay device that operates in Class B mode to receive and forward data frames between terminals in Class C mode and base stations, using mode identifiers and period information to ensure effective communication by simulating Class B mode operations, thereby reducing power consumption and improving data transmission efficiency.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If a Class B mode terminal is installed underground or at a long deployment distance, then the terminal can be deployed in difficult-to-reach locations, but the signal strength is attenuated making communication with the base station impossible
Solution Approach 1:
A relay device is introduced as an intermediary between the Class C mode terminal and the base station. The relay device receives uplink data from the terminal, processes it with appropriate mode identifiers, and forwards it to the base station. Similarly, it receives downlink data from the base station and forwards it to the terminal, enabling communication in scenarios where direct communication is impossible due to signal attenuation or excessive distance
2Reliability
If a relay device is introduced to enable communication between terminals and base stations, then communication reliability is improved, but the device complexity increases
Solution Approach 1:
The relay device is designed to operate in Class B mode and perform multiple functions: receiving uplink data from Class C mode terminals, adding or modifying mode identifiers in data frames, forwarding data to the base station, receiving downlink data from the base station, and relaying it to terminals. This multi-functional design reduces the need for separate specialized devices for each function
3Device complexity
If direct communication is used between Class B mode terminals and base stations, then the network structure is simple, but data transmission fails when signal attenuation or distance is excessive
Solution Approach 1:
The relay device acts as a mediator that extends the communication range between Class C mode terminals and base stations. By receiving and forwarding data frames with appropriate mode identifiers, it enables data transmission in scenarios where direct communication would fail due to signal attenuation or excessive distance, thereby improving data transmission efficiency without requiring a complete redesign of the network architecture
Data Source
AI summary
The present application discloses communication methods and systems. The communication method includes: receiving a first uplink data frame from a terminal operating in a second mode, wherein the first uplink data frame comprises a first mode identifier and a terminal identifier, and the first mode identifier is used to indicate to a base station that the terminal is operating in a first mode; determining that the terminal operates in the second mode, according to a first information set and the terminal identifier; sending the first uplink data frame to the base station; receiving a first downlink data frame from the base station; and forwarding the first downlink data frame to the terminal.