| Summary: | 碩士 === 國立暨南國際大學 === 電機工程學系 === 101 === In IEEE 802.15.4 networks, routers cannot enter sleep mode to reduce power consumption and runs out of battery power quickly. In addition, the implementation of CSMA/CA protocol in IEEE 802.15.4 is different from that in IEEE 802.11. Because a node does not perform channel sensing during backoff, a collision may occurs when a node transmit a packet. As a result, IEEE 802.15.4 is unsuitable for wireless sensor networks (WSN). In this thesis, we design and implement the CSMA / CA protocol based on IEEE 802.11 by TI CC2530 for wireless sensor networks. For hardware-related programming, we have implemented the RF driver, the MAC Timer driver, the interrupt service routines, the channel sensing mechanism, and the two-way handshaking CSMA/CA protocol. A prototype platform was built and packets are successfully delivered between multiple nodes. In the future, the platform can be extended to a complete media access control (MAC) layer suitable for wireless sensor networks, such as the well-know S-MAC.
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