Measurement Result Recording (MRR)

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Measurement Result Recording (MRR) is a tool for measuring the radio characteristics of the connections between MSs and the network. MRR records information on the radio characteristics of the dedicated channels and calculates statistics on the data recorded.
MRR utilises the data that the BSC receives from the BTS in Measurement Results. These data include the results of the measurements performed by both the BTS and the MS.
The purpose of the feature is to provide the operator with a facility for compiling statistics on the radio interface. The feature makes it easier for the operator to supervise the radio network. It also makes it possible for the operator to determine correlations within the collected data.
The MRR application can be used for:
  • Supervision of the network performance
  • Troubleshooting of the network
  • Comparison of the network performance before and after a change is made to the network
MRR is a feature in the Operation and Support System (OSS). Recordings can be defined, scheduled, ended, stored and processed in OSS. The user can generate a large number of reports that can be used to analyse each recording and make comparisons. MRR is based on a function in the BSC, where it is possible to initiate and to end a recording by command. All data are recorded initially by the BSC and stored in a binary file that can be output directly or forwarded to OSS for further processing.
The measured radio characteristics are:
  • Signal strength in both Uplink (UL) and Downlink (DL).
  • Signal Quality in both UL and DL.
  • Timing Advance (TA).
  • Power level used by the MS and Power reduction of the BTS.
  • UL and DL Pathloss.
  • Pathloss difference (Pathloss DL - Pathloss UL).
The radio characteristics can be recorded for one or more cell sets simultaneously by initiating one or more recordings. A cell set can comprise one or more cells.
The user can filter the data received from a Measurement Result by specifying recording thresholds. Recording thresholds can be specified for either one or two specified radio characteristics. The use of recording thresholds allows the user to determine: radio performance, the causes of poor radio performance and correlations between different radio characteristics. As a special filtering option, connections using Adaptive Multi Rate full rate (AMR FR) can be selected to be included or excluded from the results.


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