Hybrid Coded Replication in LoRa Networks

Protocols for Bio-Inspired Resource Discovery and Erasure Coded Replication in P2P Networks

Efficient resource discovery and availability improvement are very important issues in unstructured P2P networks. In this paper, a bio-inspired resource discovery scheme inspired by the principle of elephants migration is proposed. A replication scheme based on Q-learning and erasure codes is also introduced. Simulation results show that the proposed schemes significantly increases query success rate and availability, and reduces the network traffic as the resources are effectively distributed to well-performing nodes.

Coded Relaying in LoRa Sensor Networks

To enhance the reliability of LoRa sensor networks, we propose two opportunistic forwarding protocols in which relays overhear sensor-to-gateway messages and periodically forward them to a gateway. To reduce the number of transmissions, the relays forward XOR sums of the overheard messages. One protocol employs a single relay node, while two relays cooperate in the other. With a single relay, our proposed protocol requires fewer relay transmissions to achieve similar loss rates as conventional uncoded forwarding in which every received message is immediately forwarded. We demonstrate up to 55%…

消息复制以提高LR-FHSS直连卫星物联网的可靠性

Message Replication for Improving Reliability of LR-FHSS Direct-to-Satellite IoT

针对LR-FHSS直连卫星物联网上行链路可靠性问题，提出两种消息复制方案（独立帧复制与单帧多副本），均能提高可靠性，并给出基于流量特征的最优方法选择指南。