nts to 50% of mobile phones being NFC enabled by 2010. Summary The simple PAN landscape, dominated by IrDA and Bluetooth, is becoming increasingly diverse, as shown in Figure 10-15, with many new technologies being developed that will offer the user a wide range of choices in terms of data throughput, range, power consumption and battery life. WUSB (Optional) WUSB (Mandatory) IrDA VFIR Bluetooth Bluetooth Bluetooth Class 1 Class 2 Class 3 IrDA SIR Zigbee Range (meters) Figure 10-15: PAN Technologies; Range vs. Data Rate Wireless PAN Standards Several of these technologies, such as ZigBee and NFC, have specific niche applications and in the short term the main choice for general personal area networking will be between Bluetooth and one of emerging high speed UWB radio based technologies such as wireless USB. Looking to the future, the IEEE 802.15 working group has chartered a standing committee (IEEE P802.15 SCwng) to look at the technologies that will lead to the next generation of wireless PANs. The next chapter looks at some of the considerations that impact on the choice of PAN technology for a given application, and some further practical aspects such as the security and vulnerabilities of the various PAN technologies. This page intentionally left blank CHAPTER Implementing Wireless PANs Wireless PAN Technology Choices The task of planning and implementing a wireless PAN is significantly simpler than the process discussed in Chapter 7 for wireless LANs, but the same three initial steps can also be applied here: Establish the user requirements; what is it that the user wants to be able to achieve with the PAN and what are the expectations of performance? Establish the technical requirements; what attributes does the technological solution need to possess in order to deliver these user requirements? Evaluate the available technologies; how do each of the available or emerging PAN technologies rank against the technical requirements? Establishing User Requirements User requirements are independent of specific t