ferent phases so the investment need not be huge upfront Coverage planning for the network: Will it be a greenfield (fresh and independent) network? Will it be deployed as an overlay with other existing 3G or 2G cells? Locations that will be deployed first as part of a deployment strategy: Will a tough location with lots of users and variable traffic be chosen as the first cell location to help understand the ability of the system to tackle load and observe system performance degradation? Will easier locations with not too very challenging capacity or system dynamics be chosen to start deployment, to help tune the network parameters before venturing into tougher and more demanding cell locations? Services supported by the network: Will all services be enabled from the start or will the deployment start with the most important business essential services and branch out to other additional services later? Will certain services be supported in one's own network like VoLTE or will initial deployments support voice by handing off to other networks to enable staggered investments? Will operation and maintenance components be enabled from the start and what capabilities from the following will be enabled and when? Logging and monitoring of service availability Remote management of network elements, including automatic restart and reconfiguration Automatic system performance tuning CHAPTER 4 NETWORK ROADMAPS Usage Models Every operator has to invest considerable attention to how the elements of users, services, subscriptions, applications, and traffic shape up in the network that is being deployed. Defining models of usage for the same and the key performance indicators (KPIs) of the network with which they are tracked gives the operator much needed information and a framework to analyze directions intended for the network and assess performance of the same. In the category of devices, the following classification could be used: Handheld devices Smart phones With or without touchscreen and usage with data, applications B