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10 2015 LoRa® Alliance Technical Marketing Workgroup good link and is close to a gateway, there is no reason for it to always use the lowest data rate and fill up the available spectrum longer than it needs to. By shiing the data rate higher, the time on air is shortened opening up more potential space for other nodes to transmit. Adaptive data rate also optimizes the battery lifetime of a node. In order to make adaptive data rate work, symmetrical up link and down link is required with sufficient downlink capacity. ese features enable a LoRaWAN™ network to have a very high capacity and make the network scalable. A network can be deployed with a minimal amount of infrastructure, and as capacity is needed, more gateways can be added, shiing up the data rates, reducing the amount of overhearing to other gateways, and scaling the capacity by 6-8x. Other LPWAN alternatives do not have the scalability of LoRaWAN™ due to technology trade-offs, which limit downlink capacity or make the downlink range asymmetrical to the uplink range. Device Classes – Not All Nodes Are Created Equal End-devices serve different applications and have different requirements. In order to optimize a variety of end application profiles, LoRaWAN™ utilizes different device classes. e device classes trade off network downlink communication latency versus battery lifetime. In a control or actuator-type application, the downlink communication latency is an important factor. A Battery powered sensors • Most energy efficient • Must be supported by all devices • Downlink available only after sensor TX B Battery Powered actuators • Energy efficient with latency controlled downlink • Slotted communication synchronized with a beacon C Main powered actuators • Devices which can afford to listen continuously • No latency for downlink communication Battery Lifetime Downlink Network Communication Latency WHAT IS LoRaWAN™?

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