How is power management implemented in a ZigBee network?
What will be an ideal response?
Packet routing requires a lot of processing overhead and some additional traffic, which diminishes the power-saving effect of ZigBee devices and also reduces the data throughput. In addition, ZigBee devices are designed to be very small-such as a light switch-and for this reason they are more likely to be equipped with low-speed, power-efficient CPUs. In a ZigBee PAN, only the devices that perform routing or are coordinators incur overhead and, consequently, consume more power. The 802.15.4 standard favors battery-powered devices but does not prevent devices from being connected to another power source, such as an electrical outlet. There is also no limitation on devices having additional data-processing power. Most FFDs, which are routing capable ZigBee devices, typically connect to external power sources, although they can run on battery power during outages. One example is an FFD that includes a temperature sensor and is configured to transmit every 30 seconds, such as those monitoring critical machinery.
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What will be an ideal response?
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