Design And Implementation Of SWP Interface In Near Field Communication

On the basis of Radio Frequency Identification and wireless Communication technology, Near Field Communication (NFC) in recent years developed as a short-range wireless Communication. NFC is fully compatible with the existing contactless technology, and developed its unique technical advantages. NFC can provide convenient,safe,fast and automatic communication.NFC widened contactless technology application domain. Not only can be applied to the identification,access control,ticket fare and other fields, but also can be used in the wireless communication of mobile phones,PDA and notebook etc. The biggest advantage of NFC is its application in mobile payment, which makes that using mobile phone payment in a supermarket or in the parking lot and using mobile phone paid subscription concert tickets become possible.NFC is a recently developed new technology; the technical standard is still in perfect, so the study about NFC technology becomes important. This artical researched a subsystem about near field communication, named SWP interface between NFC chip and SIM card.Firstly, this paper introduces NFC protocol and communication theory, and the rationship beween NFC and other wireless communications. Then gradually thinning, analyzes standards about the interface between UICC (Universal Integrated Circuit Card) and CLF (Contactless Front-end), puts forward the solutions according to the understanding of the standard, this solution is used to connect SIM card and CLF and provide the communication each other. The forth part and the fifth part introduce design and implementation of SWP interface in hardware and software, and design about two types of applications of NFC, card simulation mode and reader mode application. Finally, using INSIDE Company's reader and NFC chip tests SWP interface. In test part, describes test environment and process, introduces the problems encountered and the solving methods.