SS-RSSI-Measurement

RRC IE · TS 38.331 v19.4.0 (2026-09) · clause 6.3.2

SS-RSSI-Measurement is an RRC information element of 3GPP TS 38.331 (38331), the 5G NR Radio Resource Control (RRC) protocol.

First seen v15.2.0 (2018-06) · Not changed since

Definition

The IE SS-RSSI-Measurement is used to configure RSSI measurements based on synchronization reference signals.

SS-RSSI-Measurement ::=             SEQUENCE {
    measurementSlots                    BIT STRING (SIZE (1..80)),
    endSymbol                           INTEGER(0..3)
}

Fields (2)

Field	Description
measurementSlots BIT STRING (SIZE (1..80))	Indicates the slots in which the UE can perform RSSI measurements. The length of the BIT STRING is equal to the number of slots in the configured SMTC window (determined by the duration and by the subcarrierSpacing). The first (left-most / most significant) bit in the bitmap corresponds to the first slot in the SMTC window, the second bit in the bitmap corresponds to the second slot in the SMTC window, and so on. The UE measures in slots for which the corresponding bit in the bitmap is set to 1. In case this field is configured for a SCell with ca-SlotOffset-r16 , the bits in the bitmap corresponds to the slots that are fully contained in the SMTC window.
endSymbol INTEGER(0..3)	Within a slot that is configured for RSSI measurements (see measurementSlots ) the UE measures the RSSI from symbol 0 to symbol endSymbol . This field identifies the entry in Table 5.1.3-1 in TS 38.215 [9], which determines the actual end symbol.

Field

Description

measurementSlots

BIT STRING (SIZE (1..80))

Indicates the slots in which the UE can perform RSSI measurements. The length of the BIT STRING is equal to the number of slots in the configured SMTC window (determined by the duration and by the subcarrierSpacing). The first (left-most / most significant) bit in the bitmap corresponds to the first slot in the SMTC window, the second bit in the bitmap corresponds to the second slot in the SMTC window, and so on. The UE measures in slots for which the corresponding bit in the bitmap is set to 1. In case this field is configured for a SCell with ca-SlotOffset-r16 , the bits in the bitmap corresponds to the slots that are fully contained in the SMTC window.

endSymbol

INTEGER(0..3)

Within a slot that is configured for RSSI measurements (see measurementSlots ) the UE measures the RSSI from symbol 0 to symbol endSymbol . This field identifies the entry in Table 5.1.3-1 in TS 38.215 [9], which determines the actual end symbol.

SS-RSSI-Measurement

Definition

Fields (2)

Used by (5)

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