zigbee wireles networkingzigbee wireless networking.docVIP

Hello Zigbee To achieve the low power and the low cost criteria, Zigbee added a constraint to the technology: Low data rate. Just don’t expect stream voice or videos over Zigbee. Yes, I have seen companies stream voice over Zigbee, but that’s not intended use, and it consume way too much bandwidth for most Zigbee networks. Zigbee Is High Reliable ● IEEE 802.15.4 with O-QPSK and DSSS ● CSMA-CA ● 16 bit CRCs ● Acknowledgment at each hop ● Mesh network to find reliable route ● End-to-end acknowledgment to verify data made it to destination Zigbee Is Cost-Effect ● It uses 2.4GHz spectrum for worldwide distribution ● There are certification houses with expertise in 802.14.5 and Zigbee ● There are module vendors who provide ready-to-do Zigbee board ● Its core technology is free of patent infringements ● It requires only low cost development environments ● Zigbee experts are available for consulting or custom engineering ● There are Application Profiles for ready-made vendors interoperability Zigbee Is Low-Power ... ... ... Zigbee Is High Secure For securing the network, Zigbee use the National Institute of Standard and Technology(NIST) Advance Encryption Standard(AES). This standard, AES-128, is block cipher that encrypts and decrypts packets in a manner that is difficult to crack. It’s one of well-konwn and well-respected standard. ● It’s an internationally recognized an truster standard ● It’s free of patent infringements ● It’s implementable on an 8-bit processor Zigbee provides both encryption, which means the packets cannot be understand by listening nodes who not aware of the key, and authentication, which means a malicious node cannot inject the false packets into the network and expect the Zigbee node to do anything with them other than throw them away. Zigbee Is an Open Global Standard ... ... ... ... ... Zigbee Is Low Data Rate In order to achieve low cost and low po