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5G NR Measurement Configuration: Meas Object, Report Config, Meas ID

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5G New Radio (NR), measurement configuration involves setting up parameters and procedures for the measurement of various radio-related quantities, such as signal strength, quality, and interference. The configuration includes three main components: Measurement Object, Report Configuration, and Measurement Identity.

  1. Measurement Object (MeasObject):
    • The Measurement Object defines what is being measured. It includes parameters such as the frequency or frequency range, cell identity, and physical cell identity. These parameters determine the scope and context of the measurement.
    • In the context of 5G NR, measurements can be made on intra-frequency, inter-frequency, or intra-system (intra-RAT) cells. Intra-frequency measurements are those within the same carrier frequency, while inter-frequency measurements involve different carrier frequencies. Intra-system measurements may involve measuring neighboring cells in the same radio access technology (RAT).
    • The Measurement Object also includes configuration parameters like the bandwidth and subcarrier spacing.
  2. Report Configuration (ReportConfig):
    • The Report Configuration defines how and when the measurement results should be reported. It includes parameters such as reporting mode, reporting interval, and reporting quantity.
    • Reporting modes can be event-triggered or periodic. In event-triggered reporting, measurements are reported when a certain condition is met (e.g., a threshold is crossed). Periodic reporting involves regular, scheduled reports.
    • Reporting intervals determine how often the measurement reports are sent, and reporting quantities specify the type of information to be included in the reports (e.g., RSRP, RSRQ, SINR).
    • Hysteresis and offset parameters may also be included to avoid frequent reporting due to small variations.
  3. Measurement Identity (MeasID):
    • The Measurement Identity is a unique identifier associated with a specific measurement configuration. It is used to link measurement configuration with measurement instances and reports.
    • Multiple Measurement Identities can be configured simultaneously, allowing for different measurement configurations to coexist. This is particularly useful in scenarios where the device needs to measure multiple cells or frequencies.
    • The Measurement Identity is used by the UE (User Equipment) to associate measurement results with the corresponding configuration when sending reports to the network.

The Measurement Object defines what is being measured, the Report Configuration specifies how and when the measurements are reported, and the Measurement Identity uniquely identifies a particular measurement configuration. Together, these components form the basis for configuring and managing measurements in 5G NR, allowing the network to monitor and optimize the performance of the radio link.