全英文资料，讲述了：zigbee与IEEE 802.15.4的比较；IEEE 802.15.4频段和传输速率；IEEE 802.15.4网络结构、数据帧格式、MAC命令帧格式、PHY层和MAC层等。-All information in English, tells the story: zigbee comparison with the IEEE 802.15.4　IEEE 802.15.4 frequency bands and transmission rate　IEEE 802.15.4 network, the data frame format, MAC command frame format, PHY layer and MAC layer.