A multi-gateway long-range radio dynamic route optimization method, medium and device

By constructing a LoRa multi-hop communication network model, calculating air interface occupancy time and expected number of link transmissions, and building a service-aware composite link cost, the problems of link reliability, air interface efficiency, and load balancing in mountainous distribution radio areas are solved, achieving fast response and efficient data transmission.

CN122420962APending Publication Date: 2026-07-17HEFEI UNIV OF TECH
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
HEFEI UNIV OF TECH
Filing Date
2026-05-07
Publication Date
2026-07-17

AI Technical Summary

Technical Problem

Existing power distribution IoT communication solutions struggle to simultaneously guarantee link reliability, air interface efficiency, load balancing, and service timeliness in mountainous transformer substations. Furthermore, traditional routing methods suffer from high control overhead and slow recovery when links degrade or nodes become congested, making them ill-suited for the rapid recovery requirements of event-driven scenarios.

Method used

A multi-gateway long-distance radio dynamic routing optimization method is adopted. By constructing a LoRa multi-hop communication network model, the air interface occupancy time (ToA), the expected number of transmissions per link, and the node load factor are calculated to construct the service-aware composite link cost. Combining the candidate path hop count and the gateway load factor, the total path cost is constructed, and an event-triggered function is set to perform local incremental repair, thereby realizing a dynamic routing closed loop.

Benefits of technology

It improves the transmission efficiency of LoRa multi-hop links, stabilizes paths and associations in multi-gateway scenarios, reduces rerouting control overhead, enhances network adaptability, improves the reliability and balance of data transmission, and reduces unnecessary global reconfiguration.

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Abstract

本发明的一种多网关远距离无线电动态路由优化方法、介质及设备,该方法针对山区配电台区中地形遮挡强、节点分布离散、链路慢时变明显以及周期业务与告警业务并存所导致的LoRa多跳组网性能下降问题,首先采集节点链路状态、队列状态、网关负载状态及业务类型信息,构建网络状态集合;其次分别计算LoRa空口占用时间ToA(Time‑of‑Arrival)、链路期望传输次数ETX(Expected‑Transmission‑Count)、节点负载因子与网关负载因子,并建立业务感知的复合链路代价模型;然后基于复合链路代价执行多网关路径选择,并引入网关关联迟滞判据抑制频繁切换;在链路退化、节点拥塞或业务突发时,触发事件驱动的局部增量修复机制,仅对受影响路径分支进行替换;最终输出更新后的路由表并完成数据转发。
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