E-UTRAN Dimensioning Guideline

This document provides guidelines for Long Term Evolution (LTE) air interface dimensioning campaigns. Air interface dimensioning is the first step performed in order to provide first estimation of the sites volumes which has to be taken into account when deploying an LTE radio network. A dimensioning campaign is executed in order to calculate, for a given geographical network area and a defined minimum quality of service to be guaranteed at the cell edge, a qualified estimate of the number of sites, their density, cell ranges and areas in correspondence with the pre-defined site layouts, clutter types and simulation cases. The results of radio dimensioning are also used by radio network planners as a first step in the radio planning process.



Contents:-


1. Air interface dimensioning process
2. Dimensioning Concept Details - Link budget

• General parameters
• Tx/Rx Path Parameters
• Frame structure
• Overhead Factors
• Link Adaptation
• Channel model
• Multi-antenna systems
• Frequency scheduling gain
• Link Budget Margins
• Maximum allowable path loss
• Clutter types and simulation cases
• Propagation models

3. Data and VoIP dimensioning

• Data dimensioning
• VoIP dimensioning
• HARQ – Hybrid Automatic Repeat Request
• HARQ gain calculation

4. Control channel link budget

• PBCH (Physical Broadcast Channel)
• PDCCH (Physical Downlink Control Channel)
• PCFICH (Physical Control Format Indicator Channel)
• PHICH (Physical Hybrid ARQ Indicator Channel)
• DL power boosting for control channels
• PUCCH (Physical Uplink Control Channel)

5. Site capacity

• Cell load impact
• UE speed impact
• 6-sector impact
• MIMO and beamforming impact
• Other capacity features
• Cell capacity estimation procedure

6. Traffic Model

7. Site count computation
8. Baseband dimensioning

• Flexi Multiradio BTS
• Peak L1 throughput
• Exemplary baseband dimensioning

9. Dimensioning parameters overview

• Coverage dimensioning (link budget)
• Capacity dimensionig

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