ture and the number of network elements required during each network roll-out phase. Detailed network planning produces the documents needed for implementation of the network and is based on the master plan prepared in the previous module. After detailed network planning, source data for each network element identified in the dimensioning phase is prepared and audited, ready for implementation. 4.1.1 Network Assessment The main objective in network assessment is to study the existing network infrastructure and provide a feasibility report on its relevance to the network under design. During network assessment, the network growth and deployment is determined and new site interconnection requirements are given for a smooth Advanced Cellular Network Planning and Optimisation Edited by Ajay R Mishra © 2007 John Wiley & Sons, Ltd Core Network Planning and Optimisation Operator's NW Requirements RFI, RFP, RFQ Feasibility Study Deployment Plan Network Assessment Network Dimensioning Detailed Planning Existing Network Infrastructure Network Architecture Detailed Trunking & Interconnect Plan Network Elements' Capacity Subscriber & Service Profile Detailed Signalling & Roaming Plan Subscriber & Service Forecasts etc. Service Profile and Penetration etc. Naming and numbering Plan etc. Dimensioning Principles Deployment Plan Source Data Implemention Figure 4.1 Network design process (RFI, request for information; RFP, request for proposal; RFQ, request for quote) network implementation. The assessment phase may be performed for a new network or for expansion of an existing network. A network that is already planned or where preliminarily investments have been made, but not necessarily implemented, may also be assessed. Many aspects of the network may be studied to ensure proper network design and planning. Some of the studies that need to be performed include: Subscriber forecast Service penetration Numbering plan Traffic routing study Country regulations Tasks of the Network Assessment The following information can be colle