Alpha

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

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

First seen v15.1.0 (2018-04) · Not changed since

Definition

The IE Alpha defines possible values of a the pathloss compensation coefficient for uplink power control. Value alpha0 corresponds to the value 0, Value alpha04 corresponds to the value 0.4, Value alpha05 corresponds to the value 0.5 and so on. Value alpha1 corresponds to value 1. See also clause 7.1 of TS 38.213 [13].

Alpha ::=                       ENUMERATED {alpha0, alpha04, alpha05, alpha06, alpha07, alpha08, alpha09, alpha1}

Used by (6)

• P0-PUSCH-AlphaSet
• P0AlphaSet-r17
• PUSCH-PowerControl
• PUSCH-PowerControl-v1610
• SRS-PosResourceSet-r16
• SRS-ResourceSet

In the viewer

• Read Alpha in v19.4.0
• History of Alpha across versions
• All versions of TS 38.331
• ASN.1 index