 know what direc- tion the leadership of cellular service providers might take that will succeed. It may not work to be conservative and wait for customer interest because customers do not know what they will do with a new service until it is in their hands. On the other hand, in- vesting large amounts of money in a new service is risky. Even if there are customers out there, an alternative technology could take the market for any of several reasons. The competing service might arrive sooner, it might be less expensive, or it might have more successful marketing. It is interesting to note that the 4G standard does not mention voice services at all. We have not heard of any effort to address the unresolved telephony issues from the limited success of the 3G initiative. Two things telephony folks might like to see include standardization of frequency allocation around the world and a truly unified telephony standard. 3 49.2.4 Beyond the cell phone Although WLL for data probably will go to Wi-Fi or other technologies, there may still be value in deploying WLL using cellular network technology. If nations that do not have robust, widespread current landline networks want to build out their national telephone systems, cellular telephony WLL is a sound technology that could become cost-effective. If not, then simple cellular networks supporting mobile telephones may Of course, the authors would prefer a standardized CDMA telephony standard. Downloaded from Digital Engineering Library @ McGraw-Hill (www.digitalengineeringlibrary.com) Copyright © 2004 The McGraw-Hill Companies. All rights reserved. Any use is subject to the Terms of Use as given at the website. CDMA Now and in the Future CDMA Now and in the Future serve, with entire countries skipping the era of the landline telephone and going straight to wireless or perhaps satellite service. We also foresee changes to the user terminal. The first changes are small but essen- tial. We need better ways to connect laptops to the Internet through mobile wireless and to us