PTRS-UplinkConfig
PTRS-UplinkConfig is an RRC information element of 3GPP TS 38.331 (38331), the 5G NR Radio Resource Control (RRC) protocol.
Definition
The IE PTRS-UplinkConfig is used to configure uplink Phase-Tracking-Reference-Signals (PTRS).
PTRS-UplinkConfig ::= SEQUENCE {
transformPrecoderDisabled SEQUENCE {
frequencyDensity SEQUENCE (SIZE (2)) OF INTEGER (1..276) OPTIONAL, -- Need S
timeDensity SEQUENCE (SIZE (3)) OF INTEGER (0..29) OPTIONAL, -- Need S
maxNrofPorts ENUMERATED {n1, n2},
resourceElementOffset ENUMERATED {offset01, offset10, offset11 } OPTIONAL, -- Need S
ptrs-Power ENUMERATED {p00, p01, p10, p11}
} OPTIONAL, -- Need R
transformPrecoderEnabled SEQUENCE {
sampleDensity SEQUENCE (SIZE (5)) OF INTEGER (1..276),
timeDensityTransformPrecoding ENUMERATED {d2} OPTIONAL -- Need S
} OPTIONAL, -- Need R
...,
[[
maxNrofPorts-SDM-r18 ENUMERATED {n1, n2} OPTIONAL -- Need R
]]
}Fields (10)
| Field | Description |
|---|---|
| transformPrecoderDisabled SEQUENCE { · OPTIONAL Need R since v15.3.0 | Configuration of UL PTRS without transform precoder (with CP-OFDM). |
| frequencyDensity SEQUENCE (SIZE (2)) OF INTEGER (1..276) · OPTIONAL Need S since v15.3.0 | Presence and frequency density of UL PT-RS for CP-OFDM waveform as a function of scheduled BW If the field is absent, the UE uses K_PT-RS = 2 (see TS 38.214 [19], clause 6.1). |
| timeDensity SEQUENCE (SIZE (3)) OF INTEGER (0..29) · OPTIONAL Need S since v15.3.0 | Presence and time density of UL PT-RS for CP-OFDM waveform as a function of MCS If the field is absent, the UE uses L_PT-RS = 1 (see TS 38.214 [19], clause 6.1). |
| maxNrofPorts ENUMERATED {n1, n2} since v15.3.0 | The maximum number of UL PTRS ports for CP-OFDM (see TS 38.214 [19], clause 6.2.3.1). |
| resourceElementOffset ENUMERATED {offset01, offset10, offset11 } · OPTIONAL Need S since v15.3.0 | Indicates the subcarrier offset for UL PTRS for CP-OFDM. If the field is absent, the UE applies the value offset00 (see TS 38.211 [16], clause 6.4.1.2.2). |
| ptrs-Power ENUMERATED {p00, p01, p10, p11} since v15.3.0 | UL PTRS power boosting factor per PTRS port (see TS 38.214 [19], clause 6.1, table 6.2.3.1.3). |
| transformPrecoderEnabled SEQUENCE { · OPTIONAL Need R since v15.3.0 | Configuration of UL PTRS with transform precoder (DFT-S-OFDM). |
| sampleDensity SEQUENCE (SIZE (5)) OF INTEGER (1..276) since v15.3.0 | Sample density of PT-RS for DFT-s-OFDM, pre-DFT, indicating a set of thresholds T={NRBn, n=0,1,2,3,4}, that indicates dependency between presence of PT-RS and scheduled BW and the values of X and K the UE should use depending on the scheduled BW, see TS 38.214 [19], clause 6.1, table 6.2.3.2-1. |
| timeDensityTransformPrecoding ENUMERATED {d2} · OPTIONAL Need S since v15.3.0 | Time density (OFDM symbol level) of PT-RS for DFT-s-OFDM. If the field is absent, the UE applies value d1 (see TS 38.214 [19], clause 6.1). |
| maxNrofPorts-SDM-r18 ENUMERATED {n1, n2} · OPTIONAL Need R since v18.0.0 | The maximum number of UL PTRS ports for CP-OFDM (see TS 38.214 [19], clause 6.2.3.1). |