CONTENTS

Policy on Intellectual Property Right (IPR)
 1     Introduction
 2     Terms and definitions
        2.1     Spectrum resource
        2.2     Frequency channel occupancy measurement
        2.3     Frequency band occupancy measurement
        2.4     Measurement area
        2.5     Duration of monitoring (T_T)
        2.6     Sample measurement time (T_M)
        2.7     Observation time (T_Obs)
        2.8     Revisit time (T_R)
        2.9     Occupancy time (T_O)
       2.10     Integration time (T_I)
       2.11     Maximum number of channels (N_Ch)
       2.12     Transmission length
       2.13     Threshold
       2.14     Busy hour
       2.15     Access delay
       2.16     Frequency channel occupancy (FCO)
       2.17     Frequency band occupancy (FBO)
       2.18     Spectrum resource occupancy (SRO)
 3     Measurement parameters
        3.1     Selectivity
        3.2     Signal to noise ratio
        3.3     Dynamic range
        3.4     Threshold
                  3.4.1     Pre-set threshold
                  3.4.2     Dynamic threshold
        3.5     Measurement timing
        3.6     Directivity of the measurement antenna
 4     Site considerations
 5     Measurement procedure
        5.1     FCO measurement with a scanning receiver
        5.2     FBO with a sweeping analyser
        5.3     FBO with FFT methods
 6     Calculation of occupancy
        6.1     Combining measurement samples on neighbouring frequencies
        6.2     Classifying emissions in bands with different channel widths
 7     Presentation of results
        7.1     Traffic on a single channel
        7.2     Occupancy on multiple channels
        7.3     Frequency band occupancy
        7.4     Spectrum resource occupancy
        7.5     Availability of results
 8     Special occupancy measurements
        8.1     Frequency channel occupancy in frequency bands allocated to point-to-point systems of fixed service
        8.2     Separation of occupancy for different users in a shared frequency resource
        8.3     Spectrum occupancy measurement of WLAN (Wireless Local Area Networks) in 2.4 GHz ISM band
        8.4     Determining the necessary channels for the transition from analogue to digital trunked systems
        8.5     Estimation of RF use by different radio services in shared bands
 9     Uncertainty considerations
10     Interpretation and usage of results
       10.1     General
       10.2     Interpretation of occupancy results in shared channels
       10.3     Using occupancy data to assess spectrum utilization
11     Conclusions
Annex 1  Influence of measurement parameters on accuracy and confidence level
 A     Preface
A1     Statistical approach to define spectrum occupancy
A2     Impact of the measurement timing
A3     Accuracy and confidence level
A4     Parameters affecting the statistical confidence of occupancy measurement
       A4.1     Pulsed and lengthy signals and signal flow rate
       A4.2     Relative instability of revisit time
A5     Measurement considerations
       A5.1     Radio channels with lengthy signals
                  A5.1.1     Data collection and occupancy measurement rule for the case of small instability of the revisit time
                  A5.1.2     Data collection and occupancy measurement rule for the case of meaningful instability of the revisit time
                  A5.1.3     Selecting the number of samples on the base of the expected signal flow rate
       A5.2     Radio channels with pulsed signals
                  A5.2.1     Data collection and occupancy measurement rule
                  A5.2.2     Selecting the number of samples on the base of the expected occupancy level
       A5.3     Selecting the number of samples in the absence of a priori information on an occupancy level
       A5.4     Effect of reduced number of samples on the confidence level and the occupancy measurement error
Reference to Annex 1