甚低功耗无线通信技术-ZigBee.docx

drawn broad attention. A complete ZigBee’s protocol suite consists of high-layer

application specifications, the application convergence layer, the network layer, the

data link layer, and the physical layer. ZigBee Alliance focuses on defining the

protocols above the network layer. The Physical (PHY) layer and the Media Access

Control (MAC) layer are defined by the IEEE 802.15.4 standard. The IEEE 802.15.4

physical layer adopts technologies of mapping from bit to symbol, conversion from

symbol to chip sequence and Offset Quadrature Phase-shift Keying (OQPSK)

802.15.4 MAC layer adopts Carrier Sense Multiple Access with Collision Avoidance