Baseband Hopping on 1800

Dynamic Frequency HoppingAnalysis and Recommendation1212/24/2012Executive SummaryFrequency PortfolioStatistical AnalysisHopping StrategiesDiscrete Frequency HoppingRecommendations

2312/24/2012Frequency PortfolioFrequency Spectrum portfolio for Telenor Pakistan is

We are using following groups for BCCH/TCH planningFrequency BandARFCN (#)90024180044ClutterBandBCCH/TCH (#)Strategy 1Strategy 2*Urban/Suburban90018/612/12180010/3410/34Rural/Remote90015/918000/44* Discussed in case study3412/24/2012Statistical Analysis Band DemographicsDemographics for TRX count and drops per band*

On GSM layer, we generally have 2 TRXs per cell (1 BCCH + 1 TCH)As expected, we have more TRXs on DCS (capacity layer)DCS BCCH cells are rare

* Central Region Stats4512/24/2012Statistical Analysis Drops and TrafficTraffic and Drops distribution per band*

DCS contributes approx. half drops than GSM with three folds traffic

* Central Region Stats5612/24/2012Statistical Analysis Current HQICurrent HQI (High Quality Indicator) stats* are

Network is limited by 900 band in quality termsAny improvement in 900 band would translate into substantial network improvement

* Central Region Stats6712/24/2012Statistical Analysis Way ForwardOn GSM layer, strategies need to be developed to improve BCCH/TCH qualities

For BCCH Quality, BCCH retune based on MRs is recommendedFor TCH Quality, progressive hopping strategies can be used

* Central Region Stats7812/24/2012Hopping StrategiesFour possible hopping methodologies are:Reuse1Reuse3Baseband HoppingDiscrete Frequency Hopping (DFH)

8912/24/2012Hopping Strategies ExplanationFour possible hopping methodologies are:Reuse1One hopping list shared by all cells within a siteReuse3Separate hopping list for each cell with a siteBaseband HoppingTRXs with fixed frequencies call hops on different TRXs# of TRXs = # of ARFCNsDiscrete Frequency Hopping (DFH)Similar to Baseband, but planned TCH frequencies are put in a MAL and RF hopping is used# of TRXs