In the Non-Beacon Enabled mode, the coordinator does not send periodic beacons, thus the network communication is not synchronous. The device is able to send frames to the coordinator that is always on. This allows the sensors to sleep most of the time and to optimize the power consumption of the network devices (sensor). The PAN-coordinator must always be awake, which increases its power consumption. This mode is not ideal for applications demanding low power consumption from the coordinator and a high data upstream from the sensor to the coordinator. The devices do not have to maintain connection, which consumes additional energy. This operation mode does not allow an inactive coordinator, thus it is not suitable for applications that aim for low power consumption on the coordinator.

Note that transfer is acknowledged by the coordinator. As soon as a device does not get a certain number of messages acknowledged it assumed that its orphaned by the Coordinator and sends out orphan notifications. A coordinator receiving an orphan notification starts a realignment. The coordinator itself does not notice if a device loses connection.

Advantages:

• Low-power consumption on sensors
• No additional delay in messaging with 100% airtime

Disadvantages:

• High-power consumption on coordinator