Internet of Things for Architects

Transparent and aggregating gateways

In MQTT-SN, gateways can take on two distinct roles. First, a transparent gateway will manage many independent MQTT-SN streams from sensor devices and convert each stream into an MQTT message. An aggregating gateway will coalesce a number of MQTT-SN streams into a reduced number of MQTT streams sent to the cloud MQTT broker. An aggregating gateway is more complex in design but will reduce the amount of communication overhead and number of simultaneous connections left open on the server. For an aggregating gateway topology to function, the clients need to publish or subscribe to the same topic:

MQTT-SN ...