nstallation, infrastructure surveillance, maintenance, backhaul and administration costs. Business accounts - Options include DIY, with many software systems available, or hiring a part-time accountant who can either train on an existing accounting system or set one up for the venture. A small-scale WMAN venture should require no more than a day or two a month to manage all the business accounts. Summary of Part V Wireless metropolitan area networking is set for future growth following the publication of the initial IEEE 802.16 suite of standards and the progress towards mobility and mesh networking under development by Task Groups TGe, TGf and TGg. These standards provide the essential networking capabilities required in WMAN applications, scalability, service flexibility and quality of Implementing Wireless MANs service - capabilities that are beyond simpler MACs such as that specified in the original IEEE 802.11 standard. Standard compliance and interoperability is being progressed by the WiMAX Forum, and as certified products start to emerge, the promise of ubiquitous wireless broadband access that motivated the original IEEE 802.16 development will begin to be realised. This page intentionally left blank THE FUTURE OF WIRELESS NETWORKING TECHNOLOGY Introduction Besides showing the current status of wireless networking technologies, Parts III to IV have highlighted the areas where, over the full wireless range from a few centimetres to many kilometres, the further development and enhancement of these technologies is continuing. Aspects such as quality of service, roaming and satisfying the ever increasing demand for data bandwidth are the focus areas of many current developments. In this chapter some key developments are outlined that go beyond the incremental enhancement of existing wireless networking concepts. These developments, such as cognitive radio and media independent handoff, typically bridge across distance scales and are likely to be significant drivers of change in the fundamental nature of wire