Nest Nurtures New IoT Protocol

(via Nest Nurtures New IoT Protocol | EE Times)

어제 오늘 많이 기사가 나오네요. 

역시 구글인가~~ 무튼 링크된 기사를 읽어보면 다양한 무선기술들을 검토했으나 이러이러해서 개발하게 되었다는 얘기가 있어 인용해 본다.

Nest's engineers considered a wide variety of home automation protocols before deciding they needed to develop a new one. "WiFi has single points of failure like an access point," so it was not suitable for the device-to-device mesh, says Boross.

WiFi는 mesh network을 지향하는 이런 망에는 적합하지 않다.

ZigBee Pro lacks native IP support. Like other versions of ZigBee, it is limited to a 32-node mesh and has the potential for a single point of failure with its always-on network coordinator. ZigBee IP "doesn't have great power consumption profiles for some kinds of devices," in part because its "routing protocol is not as efficient," Boross contends.

ZigBee Pro는 IP layer 지원에 문제가 많고, 다른 버전의 ZigBee도 mesh를 구성하는데 일정한 제약이 있고 효율적이지 않다고 판다.

ZWave (like a number of other alternatives) was rejected because it does not support IP and is not open. In addition, "its gateway is complicated."

ZWave도 IP를 지원하지 않고, open되지 않아 거절되었고 또한 gateway가 너무 복잡했다.

The OpenWSN implementation of 6LoWPAN came the closest of all the options, but it lacks the built-in encryption and authentication functions Nest wanted. OpenWSN's Constrained Application protocol (CoAP) will run on Thread.

OpenWSN이 가장 가까운 솔루션인데 보안쪽에 약간 부족한 부분이 있다. CoAP의 경우에는 Thread에서도 동작이 가능하다.

이상. 머 어쨋든 또 하나 생기면 머리가 아포

=)