User's Manual

SME VoIP System Guide, Version 1.5
Proprietary and Confidential
Chapter: SME VoIP Network Planning/Optimization
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4 SME VoIP Network Planning/Optimization
In this chapter, we describe SME VoIP radio network planning techniques including dimensioning, detailed
capacity and coverage planning, and network optimisation.
4.1 Network Requirements
Network requirement is essential to determine elements necessary to achieve the overall expectations of
the customer. Typical network requirements includes (but not limited to):
The geographical area to be covered
The type or architecture of building and/or topology, etc.
The estimated traffic on each zone or region or building
The blocking criteria in each traffic area.
The relevant quality targets expected to be achieved
4.2 Deployment Considerations
The following radio considerations must be examined before deploying a SME VoIP System. These includes
(but not limited to):
Building Penetration:
When a signal strikes a building it is diffracted or absorbed; therefore to some extend the signal is reduced.
The amount of absorption is dependent of the kind of building and its environment, the amount of solid
structure. This is an important consideration in coverage planning.
Interference Sources:
Signals to receiving antenna can be weakened by virtue of interference from other signals. These signals
may be from the same network or other man-made objects. Interference sources must be identified and
avoided or minimized.
4.3 Site Planning
4.3.1 Deployment kit
Based on propagation models, the coverage of areas is done with the use of radio planning tools. In the RTX
SME VoIP Network, the radio planning tool available is called Deployment Kit. Detail description and use of
this document is available in a separate document(s) [1][2].
4.3.2 Location Probability
The quality of coverage is determined by location probability. For practical purposes, the location
probability of 50% is equal to the sensitivity of receiver in a specific region. This is also measured by the
Deployment Kit [1][2].