SRS-CarrierSwitching
SRS-CarrierSwitching is an RRC information element of 3GPP TS 38.331 (38331), the 5G NR Radio Resource Control (RRC) protocol.
Definition
The IE SRS-CarrierSwitching is used to configure SRS carrier switching when PUSCH is not configured or to configure independent SRS power control from that of PUSCH.
SRS-CarrierSwitching ::= SEQUENCE {
srs-SwitchFromServCellIndex INTEGER (0..31) OPTIONAL, -- Need M
srs-SwitchFromCarrier ENUMERATED {sUL, nUL},
srs-TPC-PDCCH-Group CHOICE {
typeA SEQUENCE (SIZE (1..32)) OF SRS-TPC-PDCCH-Config,
typeB SRS-TPC-PDCCH-Config
} OPTIONAL, -- Need M
monitoringCells SEQUENCE (SIZE (1..maxNrofServingCells)) OF ServCellIndex OPTIONAL, -- Need M
...
}Fields (6)
| Field | Description |
|---|---|
| srs-SwitchFromServCellIndex INTEGER (0..31) · OPTIONAL Need M | Indicates the serving cell whose UL transmission may be interrupted during SRS transmission on a PUSCH-less SCell. During SRS transmission on a PUSCH-less SCell, the UE may temporarily suspend the UL transmission on a serving cell with PUSCH in the same CG to allow the PUSCH-less SCell to transmit SRS. (see TS 38.214 [19], clause 6.2.1.3). |
| srs-SwitchFromCarrier ENUMERATED {sUL, nUL} since v15.2.0 | The UE ignores this field in case of independent SRS power control from that of PUSCH. |
| srs-TPC-PDCCH-Group CHOICE { · OPTIONAL Need M | Network configures the UE with either typeA-SRS-TPC-PDCCH-Group or typeB-SRS-TPC-PDCCH-Group, if any. |
| typeA SEQUENCE (SIZE (1..32)) OF SRS-TPC-PDCCH-Config | Type A trigger configuration for SRS transmission on a PUSCH-less SCell, or for SRS transmission on a serving cell with independent SRS power control from that of PUSCH (see TS 38.213 [13], clause 11.4). In this release, the network configures at most one entry (the first entry) of typeA , and the first entry corresponds to the serving cell in which the SRS-CarrierSwitching field is configured. SRS carrier switching to SUL carrier is not supported in this version of the specification. |
| typeB SRS-TPC-PDCCH-Config | Type B trigger configuration for SRS transmission on a PUSCH-less SCell, or for SRS transmission on a serving cell with independent SRS power control from that of PUSCH (see TS 38.213 [13], clause 11.4). |
| monitoringCells SEQUENCE (SIZE (1..maxNrofServingCells)) OF ServCellIndex · OPTIONAL Need M | A set of serving cells for monitoring PDCCH conveying SRS DCI format with CRC scrambled by TPC-SRS-RNTI (see TS 38.212 [17], TS 38.213 [13], clause 7.3.1, 11.4). |