4G/LTE - PHY Signal

Reference Signal - Downlink - CSI Reference Signal

CSI reference signals are transmitted on one, two, four or eight antenna ports using p = 15 , p =15,16 , p =15,...,18 and p =15,...,22 , respectively.

Locations of CSI Reference Signal

In 36.211(V10.7.0) - 6.10.5.2 Mapping to resource elements, the location of CSI reference signal is defined as below.

<36.211(V10.7.0)-Table 6.10.5.2-1: Mapping from CSI reference signal configuration to (k', l' ) for normal cyclic prefix.>

Following is based on 36.211 Figure 6.10.5.2-1: Mapping of CSI reference signals (CSI configuration 0, normal cyclic prefix). This is an example showing the location of CSI RS when the CSI Reference Configuration 0 (i.e, k' = 9, l' = 5) is applied for the subframe with normal cyclic prefix.

<36.211(V10.7.0)-Table 6.10.5.2-2: Mapping from CSI reference signal configuration to (k', l' ) for extended cyclic prefix.>

Timing (Periodicity)  of CSI Reference Signal

<36.211(V10.7.0)-Table 6.10.5.3-1: CSI reference signal subframe configuration.>

+-rrcConnectionReconfiguration-r8 ::= SEQUENCE [000100]

  +-measConfig ::= SEQUENCE OPTIONAL:Omit

  +-mobilityControlInfo ::= SEQUENCE OPTIONAL:Omit

  +-dedicatedInfoNASList ::= SEQUENCE OF OPTIONAL:Omit

  +-radioResourceConfigDedicated ::= SEQUENCE [000001] OPTIONAL:Exist

  | +-srb-ToAddModList ::= SEQUENCE OF OPTIONAL:Omit

  | +-drb-ToAddModList ::= SEQUENCE OF OPTIONAL:Omit

  | +-drb-ToReleaseList ::= SEQUENCE OF OPTIONAL:Omit

  | +-mac-MainConfig ::= CHOICE OPTIONAL:Omit

  | +-sps-Config ::= SEQUENCE OPTIONAL:Omit

  | +-physicalConfigDedicated ::= SEQUENCE [0000000000] OPTIONAL:Exist

  | | +-pdsch-ConfigDedicated ::= SEQUENCE OPTIONAL:Omit

  | | +-pucch-ConfigDedicated ::= SEQUENCE OPTIONAL:Omit

  | | +-pusch-ConfigDedicated ::= SEQUENCE OPTIONAL:Omit

  | | +-uplinkPowerControlDedicated ::= SEQUENCE OPTIONAL:Omit

  | | +-tpc-PDCCH-ConfigPUCCH ::= CHOICE OPTIONAL:Omit

  | | +-tpc-PDCCH-ConfigPUSCH ::= CHOICE OPTIONAL:Omit

  | | +-cqi-ReportConfig ::= SEQUENCE OPTIONAL:Omit

  | | +-soundingRS-UL-ConfigDedicated ::= CHOICE OPTIONAL:Omit

  | | +-antennaInfo ::= CHOICE OPTIONAL:Omit

  | | +-schedulingRequestConfig ::= CHOICE OPTIONAL:Omit

  | | +-EXTENSION ::= SEQUENCE [00011111]

  | |   +-VERSION-BRACKETS1 ::= SEQUENCE OPTIONAL:Omit

  | |   +-VERSION-BRACKETS2 ::= SEQUENCE OPTIONAL:Omit

  | |   +-VERSION-BRACKETS3 ::= SEQUENCE OPTIONAL:Omit

  | |   +-VERSION-BRACKETS4 ::= SEQUENCE [0101000000] OPTIONAL:Exist

  | |   | +-csi-RS-ConfigNZPToReleaseList-r11 ::= SEQUENCE OF OPTIONAL:Omit

  | |   | +-csi-RS-ConfigNZPToAddModList-r11 ::= SEQUENCE OF SIZE(1..maxCSI-RS-NZP-r11[3]) [1] OPTIONAL:Exist

  | |   | | +-CSI-RS-ConfigNZP-r11 ::= SEQUENCE [1]

  | |   | |   +-csi-RS-ConfigNZPId-r11 ::= INTEGER (1..maxCSI-RS-NZP-r11[3]) [1]

  | |   | |   +-antennaPortsCount-r11 ::= ENUMERATED [an8]

  | |   | |   +-resourceConfig-r11 ::= INTEGER (0..31) [0]

  | |   | |   +-subframeConfig-r11 ::= INTEGER (0..154) [0]

  | |   | |   +-scramblingIdentity-r11 ::= INTEGER (0..503) [0]

  | |   | |   +-qcl-CRS-Info-r11 ::= SEQUENCE [0] OPTIONAL:Exist

  | |   | |   | +-qcl-ScramblingIdentity-r11 ::= INTEGER (0..503) [0]

  | |   | |   | +-crs-PortsCount-r11 ::= ENUMERATED [n1]

  | |   | |   | +-mbsfn-SubframeConfigList-r11 ::= CHOICE OPTIONAL:Omit

  | |   | |   +-EXTENSION ::= SEQUENCE [1]

  | |   | |     +-VERSION-BRACKETS1 ::= SEQUENCE [1] OPTIONAL:Exist

  | |   | |       +-csi-RS-ConfigNZPId-v1310 ::= INTEGER (minCSI-RS-NZP-r13[4]..maxCSI-RS-NZP-r13[24]) [4]

  | |   | +-csi-RS-ConfigZPToReleaseList-r11 ::= SEQUENCE OF OPTIONAL:Omit

  | |   | +-csi-RS-ConfigZPToAddModList-r11 ::= SEQUENCE OF SIZE(1..maxCSI-RS-ZP-r11[4]) [1] OPTIONAL:Exist

  | |   | | +-CSI-RS-ConfigZP-r11 ::= SEQUENCE

  | |   | |   +-csi-RS-ConfigZPId-r11 ::= INTEGER (1..maxCSI-RS-ZP-r11[4]) [1]

  | |   | |   +-resourceConfigList-r11 ::= BIT STRING SIZE(16) [0000000000000000]

  | |   | |   +-subframeConfig-r11 ::= INTEGER (0..154) [0]

  | |   | |   +-EXTENSION ::= SEQUENCE

  | |   | +-epdcch-Config-r11 ::= SEQUENCE OPTIONAL:Omit

  | |   | +-pdsch-ConfigDedicated-v1130 ::= SEQUENCE OPTIONAL:Omit

  | |   | +-cqi-ReportConfig-v1130 ::= SEQUENCE OPTIONAL:Omit

  | |   | +-pucch-ConfigDedicated-v1130 ::= SEQUENCE OPTIONAL:Omit

  | |   | +-pusch-ConfigDedicated-v1130 ::= SEQUENCE OPTIONAL:Omit

  | |   | +-uplinkPowerControlDedicated-v1130 ::= SEQUENCE OPTIONAL:Omit

  | |   +-VERSION-BRACKETS5 ::= SEQUENCE [00000001] OPTIONAL:Exist

  | |   | +-antennaInfo-v1250 ::= SEQUENCE OPTIONAL:Omit

  | |   | +-eimta-MainConfig-r12 ::= CHOICE OPTIONAL:Omit

  | |   | +-eimta-MainConfigPCell-r12 ::= CHOICE OPTIONAL:Omit

  | |   | +-pucch-ConfigDedicated-v1250 ::= SEQUENCE OPTIONAL:Omit

  | |   | +-cqi-ReportConfigPCell-v1250 ::= SEQUENCE OPTIONAL:Omit

  | |   | +-uplinkPowerControlDedicated-v1250 ::= SEQUENCE OPTIONAL:Omit

  | |   | +-pusch-ConfigDedicated-v1250 ::= SEQUENCE OPTIONAL:Omit

  | |   | +-csi-RS-Config-v1250 ::= SEQUENCE [11] OPTIONAL:Exist

  | |   |   +-zeroTxPowerCSI-RS2-r12 ::= CHOICE [setup] OPTIONAL:Exist

  | |   |   | +-setup ::= SEQUENCE

  | |   |   |   +-zeroTxPowerResourceConfigList-r12 ::= BIT STRING SIZE(16) [0000000000000000]

  | |   |   |   +-zeroTxPowerSubframeConfig-r12 ::= INTEGER (0..154) [0]

  | |   |   +-ds-ZeroTxPowerCSI-RS-r12 ::= CHOICE [setup] OPTIONAL:Exist

  | |   |     +-setup ::= SEQUENCE

  | |   |       +-zeroTxPowerCSI-RS-List-r12 ::= SEQUENCE OF SIZE(1..maxDS-ZTP-CSI-RS-r12[5]) [1]

  | |   |         +-ZeroTxPowerCSI-RS-r12 ::= SEQUENCE

  | |   |           +-zeroTxPowerResourceConfigList-r12 ::= BIT STRING SIZE(16) [0000000000000000]

  | |   |           +-zeroTxPowerSubframeConfig-r12 ::= INTEGER (0..154) [0]

  | |   +-VERSION-BRACKETS6 ::= SEQUENCE [0] OPTIONAL:Exist

  | |   | +-pdsch-ConfigDedicated-v1280 ::= SEQUENCE OPTIONAL:Omit

  | |   +-VERSION-BRACKETS7 ::= SEQUENCE [0000000001010] OPTIONAL:Exist

  | |   | +-pdsch-ConfigDedicated-v1310 ::= SEQUENCE OPTIONAL:Omit

  | |   | +-pucch-ConfigDedicated-r13 ::= SEQUENCE OPTIONAL:Omit

  | |   | +-pusch-ConfigDedicated-r13 ::= SEQUENCE OPTIONAL:Omit

  | |   | +-pdcch-CandidateReductions-r13 ::= CHOICE OPTIONAL:Omit

  | |   | +-cqi-ReportConfig-v1310 ::= SEQUENCE OPTIONAL:Omit

  | |   | +-soundingRS-UL-ConfigDedicated-v1310 ::= CHOICE OPTIONAL:Omit

  | |   | +-soundingRS-UL-ConfigDedicatedUpPTsExt-r13 ::= CHOICE OPTIONAL:Omit

  | |   | +-soundingRS-UL-ConfigDedicatedAperiodic-v1310 ::= CHOICE OPTIONAL:Omit

  | |   | +-soundingRS-UL-ConfigDedicatedAperiodicUpPTsExt-r13 ::= CHOICE OPTIONAL:Omit

  | |   | +-csi-RS-Config-v1310 ::= SEQUENCE [1] OPTIONAL:Exist

  | |   | | +-eMIMO-Type-r13 ::= CHOICE [setup] OPTIONAL:Exist

  | |   | |   +-setup ::= CHOICE [nonPrecoded-r13]

  | |   | |     +-nonPrecoded-r13 ::= SEQUENCE [11111]

  | |   | |       +-p-C-AndCBSRList-r13 ::= SEQUENCE OF SIZE(1..2) [1] OPTIONAL:Exist

  | |   | |       | +-P-C-AndCBSR-r13 ::= SEQUENCE

  | |   | |       |   +-p-C-r13 ::= INTEGER (-8..15) [-8]

  | |   | |       |   +-cbsr-Selection-r13 ::= CHOICE [nonPrecoded-r13]

  | |   | |       |   | +-nonPrecoded-r13 ::= SEQUENCE

  | |   | |       |   |   +-codebookSubsetRestriction1-r13 ::= BIT STRING SIZE(ALIGNED)

  | |   | |       |   |   +-codebookSubsetRestriction2-r13 ::= BIT STRING SIZE(ALIGNED)

  | |   | |       |   +-EXTENSION ::= SEQUENCE

  | |   | |       +-codebookConfigN1-r13 ::= ENUMERATED [n1]

  | |   | |       +-codebookConfigN2-r13 ::= ENUMERATED [n1]

  | |   | |       +-codebookOverSamplingRateConfig-O1-r13 ::= ENUMERATED [n4] OPTIONAL:Exist

  | |   | |       +-codebookOverSamplingRateConfig-O2-r13 ::= ENUMERATED [n4] OPTIONAL:Exist

  | |   | |       +-codebookConfig-r13 ::= INTEGER (1..4) [1]

  | |   | |       +-csi-IM-ConfigIdList-r13 ::= SEQUENCE OF SIZE(1..2) [1] OPTIONAL:Exist

  | |   | |       | +-CSI-IM-ConfigId-r13 ::= INTEGER (1..maxCSI-IM-r13[24]) [1]

  | |   | |       +-csi-RS-ConfigNZP-EMIMO-r13 ::= CHOICE [setup] OPTIONAL:Exist

  | |   | |         +-setup ::= SEQUENCE [1]

  | |   | |           +-nzp-resourceConfigList-r13 ::= SEQUENCE OF SIZE(1..2) [1]

  | |   | |           | +-NZP-ResourceConfig-r13 ::= SEQUENCE

  | |   | |           |   +-resourceConfig-r13 ::= INTEGER (0..31) [0]

  | |   | |           |   +-EXTENSION ::= SEQUENCE

  | |   | |           +-cdmType-r13 ::= ENUMERATED [cdm2] OPTIONAL:Exist

  | |   | +-ce-Mode-r13 ::= CHOICE OPTIONAL:Omit

  | |   | +-csi-RS-ConfigNZPToAddModListExt-r13 ::= SEQUENCE OF SIZE(1..maxCSI-RS-NZP-v1310[21]) [1] OPTIONAL:Exist

  | |   | | +-CSI-RS-ConfigNZP-r11 ::= SEQUENCE [1]

  | |   | |   +-csi-RS-ConfigNZPId-r11 ::= INTEGER (1..maxCSI-RS-NZP-r11[3]) [1]

  | |   | |   +-antennaPortsCount-r11 ::= ENUMERATED [an8]

  | |   | |   +-resourceConfig-r11 ::= INTEGER (0..31) [0]

  | |   | |   +-subframeConfig-r11 ::= INTEGER (0..154) [0]

  | |   | |   +-scramblingIdentity-r11 ::= INTEGER (0..503) [0]

  | |   | |   +-qcl-CRS-Info-r11 ::= SEQUENCE [0] OPTIONAL:Exist

  | |   | |   | +-qcl-ScramblingIdentity-r11 ::= INTEGER (0..503) [0]

  | |   | |   | +-crs-PortsCount-r11 ::= ENUMERATED [n1]

  | |   | |   | +-mbsfn-SubframeConfigList-r11 ::= CHOICE OPTIONAL:Omit

  | |   | |   +-EXTENSION ::= SEQUENCE [1]

  | |   | |     +-VERSION-BRACKETS1 ::= SEQUENCE [1] OPTIONAL:Exist

  | |   | |       +-csi-RS-ConfigNZPId-v1310 ::= INTEGER (minCSI-RS-NZP-r13[4]..maxCSI-RS-NZP-r13[24]) [4]

  | |   | +-csi-RS-ConfigNZPToReleaseListExt-r13 ::= SEQUENCE OF OPTIONAL:Omit

  | |   +-VERSION-BRACKETS8 ::= SEQUENCE [0] OPTIONAL:Exist

  | |     +-cqi-ReportConfig-v1320 ::= SEQUENCE OPTIONAL:Omit

  | +-EXTENSION ::= SEQUENCE [00000]

  |   +-VERSION-BRACKETS1 ::= SEQUENCE OPTIONAL:Omit

  |   +-VERSION-BRACKETS2 ::= SEQUENCE OPTIONAL:Omit

  |   +-VERSION-BRACKETS3 ::= SEQUENCE OPTIONAL:Omit

  |   +-VERSION-BRACKETS4 ::= SEQUENCE OPTIONAL:Omit

  |   +-VERSION-BRACKETS5 ::= SEQUENCE OPTIONAL:Omit

  +-securityConfigHO ::= SEQUENCE OPTIONAL:Omit

  +-nonCriticalExtension ::= SEQUENCE OPTIONAL:Omit