Documentation

lteRMCDL

Downlink reference measurement channel configuration

Syntax

  • rmccfgout = lteRMCDL(rc,duplexmode,totsubframes)
    example
  • rmccfgout = lteRMCDL(rmccfg,ncodewords)
    example

Description

example

rmccfgout = lteRMCDL(rc,duplexmode,totsubframes) returns a configuration structure for the reference channel defined by rc. This structure uses a channel-specific default configuration. The structure contains the configuration parameters required to generate a given reference channel waveform using the reference measurement channel (RMC) generator tool, lteRMCDLTool. The field names and default values comply with the definition found in TS 36.101, Annex A.3 [1]. duplexmode and totsubframes are optional input parameters that define the duplexing mode and total number of subframes to generate, respectively.

example

rmccfgout = lteRMCDL(rmccfg,ncodewords) returns a configuration structure for the reference channel partially, or wholly, defined by the input structure, rmccfg. ncodewords is an optional input argument defining the number of PDSCH codewords to modulate. The input structure, rmccfg, can define any of the listed fields or substructure fields. The output structure, rmccfgout, returns a fully configured structure retaining the defined fields. Any undefined fields are assigned based on the setting indicated by the field rc. If the rc field is undefined, the 'R.0' RMC configuration is used as the default. The values of RVSeq, TrBlkSizes, and CodedTrBlkSizes are set according to the modulation scheme and the code rate for the RMC. The RMC generator tool can use the rmccfgout structure to generate a waveform.

Examples

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Generate RMC configuration for RMC structure variable

This example shows creation of a configuration structure for reference measurement channel R.11 as specified in TS 36.101.

Create a configuration structure for RC R.11 as specified in TS 36.101

rmc.RC = 'R.11';
rmc.NCellID = 100;
rmc.PDSCH.TxScheme = 'SpatialMux';
rmcOut = lteRMCDL(rmc,2)
rmcOut = 

                 RC: 'R.11'
              NDLRB: 50
           CellRefP: 2
            NCellID: 100
       CyclicPrefix: 'Normal'
                CFI: 2
                 Ng: 'Sixth'
      PHICHDuration: 'Normal'
             NFrame: 0
          NSubframe: 0
       TotSubframes: 10
          Windowing: 0
         DuplexMode: 'FDD'
              PDSCH: [1x1 struct]
    OCNGPDCCHEnable: 'Off'
     OCNGPDCCHPower: 0
    OCNGPDSCHEnable: 'Off'
     OCNGPDSCHPower: 0
          OCNGPDSCH: [1x1 struct]

Display the contents of the PDSCH substructure

rmcOut.PDSCH
ans = 

           TxScheme: 'SpatialMux'
         Modulation: {'16QAM'  '16QAM'}
            NLayers: 2
                Rho: 0
               RNTI: 1
              RVSeq: [2x4 double]
                 RV: [0 0]
     NHARQProcesses: 8
       NTurboDecIts: 5
             PRBSet: [50x1 double]
         TrBlkSizes: [2x10 double]
    CodedTrBlkSizes: [2x10 double]
          DCIFormat: 'Format2'
        PDCCHFormat: 2
         PDCCHPower: 0
            CSIMode: 'PUSCH 3-1'
            PMIMode: 'Wideband'
             PMISet: 0

Generate an RMC configuration where the CFI varies per subframe

This example shows creation of a configuration structure for reference measurement channel R.0 in TDD mode as specified in TS 36.101. For this RMC and duplex mode combination, the value of CFI varies per subframe.

Set input arguments.

rc = 'R.0';
duplexmode = 'TDD';

Generate the configuration structure.

rmcOut = lteRMCDL(rc,duplexmode)
rmcOut = 

                 RC: 'R.0'
              NDLRB: 15
           CellRefP: 1
            NCellID: 0
       CyclicPrefix: 'Normal'
                CFI: [3 2 3 3 3 3 2 3 3 3]
                 Ng: 'Sixth'
      PHICHDuration: 'Normal'
             NFrame: 0
          NSubframe: 0
       TotSubframes: 10
          Windowing: 0
         DuplexMode: 'TDD'
              PDSCH: [1x1 struct]
    OCNGPDCCHEnable: 'Off'
     OCNGPDCCHPower: 0
    OCNGPDSCHEnable: 'Off'
     OCNGPDSCHPower: 0
          OCNGPDSCH: [1x1 struct]
                SSC: 4
          TDDConfig: 1

In TDD mode, looking at the rmcOut.CFI vector, we see variation which corresponds to per subframe CFI adjustment

rmcOut.CFI
ans =

     3     2     3     3     3     3     2     3     3     3

Generate an RMC config varying resource allocation per SF

This example shows creation of a configuration structure for reference measurement channel R.44 as specified in TS 36.101.

Set input arguments and generate the configuration structure.

rc = 'R.44';

rmcOut = lteRMCDL(rc);

For this RMC, the size of the resource allocation varies per subframe. Evidence of this is seen by viewing the PRBSet and observing that the length of resource allocation vectors in the PRBSet cell array vary per subframe

rmcOut.PDSCH.PRBSet
ans = 

  Columns 1 through 4

    [41x1 double]    [50x1 double]    [50x1 double]    [50x1 double]

  Columns 5 through 9

    [50x1 double]    []    [50x1 double]    [50x1 double]    [50x1 double]

  Column 10

    [50x1 double]

Generate an RMC config and override a default setting

Create a new customized parameter set by overriding selected values of an existing preset RMC. To define a single codeword full-band 10MHz PDSCH using 4 CRS port spatial multiplexing and 64QAM modulation, begin by initializing an RMC configuration structure to R.13. Looking at TS 36.101, Table A.3.1.1-1, see the RMC R.13 matches desired configuration except the default QPSK modulation must be adjusted.

Create an R.13 RMC configured structure and display rmc.PDSCH.

rmcOverride.RC = 'R.13';
rmc = lteRMCDL(rmcOverride,1);
rmc.PDSCH
ans = 

           TxScheme: 'SpatialMux'
         Modulation: {'QPSK'}
            NLayers: 1
                Rho: 0
               RNTI: 1
              RVSeq: [0 1 2 3]
                 RV: 0
     NHARQProcesses: 8
       NTurboDecIts: 5
             PRBSet: [50x1 double]
         TrBlkSizes: [3624 4392 4392 4392 4392 0 4392 4392 4392 4392]
    CodedTrBlkSizes: [12032 12800 12800 12800 12800 0 12800 12800 12800 12800]
          DCIFormat: 'Format2'
        PDCCHFormat: 2
         PDCCHPower: 0
            CSIMode: 'PUSCH 1-2'
            PMIMode: 'Wideband'
             PMISet: 0

Override the default modulation, execute lteRMCDL and display rmc.PDSCH again. The returned PDSCH transport block sizes and physical channel capacities are updated to maintain the R=1/3 coding rate when the modulation is overridden.

rmcOverride.PDSCH.Modulation = '64QAM';
rmc = lteRMCDL(rmcOverride,1);
rmc.PDSCH
ans = 

           TxScheme: 'SpatialMux'
         Modulation: {'64QAM'}
            NLayers: 1
                Rho: 0
               RNTI: 1
              RVSeq: [0 0 1 2]
                 RV: 0
     NHARQProcesses: 8
       NTurboDecIts: 5
             PRBSet: [50x1 double]
         TrBlkSizes: [15264 15264 15264 15264 15264 0 15264 15264 15264 15264]
    CodedTrBlkSizes: [36096 38400 38400 38400 38400 0 38400 38400 38400 38400]
          DCIFormat: 'Format2'
        PDCCHFormat: 2
         PDCCHPower: 0
            CSIMode: 'PUSCH 1-2'
            PMIMode: 'Wideband'
             PMISet: 0

Note the RV sequence is also updated to reflect that defined for the 64QAM modulation.

Input Arguments

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rc — Reference measurement channel'R.0' | 'R.1' | 'R.2' | 'R.3' | 'R.4' | 'R.5' | 'R.6' | 'R.7' | 'R.8' | 'R.9' | 'R.10' | 'R.11' | 'R.12' | 'R.13' | 'R.14' | 'R.25' | 'R.26' | 'R.27' | 'R.28' | 'R.43' | 'R.44' | 'R.45' | 'R.45-1' | 'R.48' | 'R.50' | 'R.51' | 'R.6-27RB' | 'R.12-9RB' | 'R.11-45RB'

Reference measurement channel, specified as a one of the strings listed in the table, as defined in TS 36.101, [1]. The given rc defaults to the transmission scheme shown.

Transmission Scheme

Duplex Mode

RMC Number

'Port0' — Single-antenna port, Port 0

'FDD' or 'TDD'

'R.0', 'R.1', 'R.2', 'R.3', 'R.4', 'R.5', 'R.6', 'R.7', 'R.8', 'R.9', 'R.6-27RB'

'TxDiversity' — Transmit diversity scheme

'FDD' or 'TDD'

'R.10', 'R.11', 'R.11-45RB', 'R.12', 'R.12-9RB'

'SpatialMux' — Closed-loop spatial multiplexing scheme

'FDD' or 'TDD'

'R.13', 'R.14'

'TDD''R.43'

'MultiUser' — Multi-user MIMO scheme

'FDD' or 'TDD'

- -

'Port5' — Single-antenna port, Port 5 (UE-specific beamforming)

'FDD' or 'TDD'

'R.25', 'R.26', 'R.27', 'R.28'

'Port7-14' — Up to eight-layer transmission, ports 7–14.'FDD''R.43', 'R.44', 'R.45', 'R.45-1', 'R.48', 'R.50', 'R.51'
'TDD''R.44', 'R.45', 'R.45-1', 'R.48', 'R.50', 'R.51'

    Note:   Reference channels 'R.6-27RB','R.12-9RB', and 'R.11-45RB' are custom RMCs that are configured for non-standard bandwidths but maintain the same code rate as the standard versions.

Data Types: char

duplexmode — Duplexing mode'FDD' (default) | optional | 'TDD'

Duplexing mode, specified as a string. It represents the frame structure type.

Data Types: char

totsubframes — Total number of subframes10 (default) | optional | positive numeric scalar

totsubframes specifies the total number of subframes that form the resource grid, used by lteRMCDLTool, to generate the waveform.

Data Types: double

rmccfg — Reference channel configurationstructure

Reference channel configuration, specified as a structure. The structure defines any, or all, of the fields or subfields contained in the output structure, rmccfgout. Any undefined fields are given appropriate default values. rmccfg must contain at least the RC field.

Parameter FieldRequired or OptionalValuesDescription
RCOptional

'R0' (default), 'R1', 'R2', 'R3', 'R4', 'R5', 'R6', 'R7', 'R8', 'R9', 'R10', 'R11', 'R12', 'R13', 'R14', 'R25', 'R26', 'R27', 'R28', 'R43', 'R44', 'R45', 'R45-1', 'R48', 'R50', 'R51', 'R6-27RB', 'R12-9RB', 'R11-45RB'

Reference measurement channel (RMC) number or type, as specified in TS 36.101, Annex A.3

Data Types: struct

ncodewords — Number of PDSCH codewords to modulateoptional | 1 | 2

Number of PDSCH codewords to modulate. ncodewords can be 1 or 2. The default used is the value defined in TS 36.101, [1] for the RMC configuration given by RC.

Data Types: double

Output Arguments

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rmccfgout — RMC configuration outputstructure

RMC configuration output structure

Returned as a scalar structure. The RMC generator tool can use the rmccfgout structure to generate a waveform. rmccfgout contains these fields.

Parameter FieldValuesDescription
RC

'R0' (default), 'R1', 'R2', 'R3', 'R4', 'R5', 'R6', 'R7', 'R8', 'R9', 'R10', 'R11', 'R12', 'R13', 'R14', 'R25', 'R26', 'R27', 'R28', 'R43', 'R44', 'R45', 'R45-1', 'R48', 'R50', 'R51', 'R6-27RB', 'R12-9RB', 'R11-45RB'

Reference measurement channel (RMC) number or type, as specified in TS 36.101, Annex A.3.

'R.6-27RB', 'R.12-9RB', and 'R.11-45RB' are custom RMC configured for non-standard bandwidths but with the same code rate as the standardized versions

NDLRB

Positive scalar integer (6, ..., 110). Standard bandwidth values are 6, 15, 25, 50, 75, and 100. NDLRB also accepts the standardized bandwidths in string format from the set {'1.4MHz', '3MHz', ‘5MHz', '10MHz', ‘15MHz', ‘20MHz'}.

Number of downlink (DL) resource blocks (RBs)

CellRefP

1, 2, 4

Number of cell-specific reference signal (CRS) antenna ports

NCellD

Nonnegative scalar integer (0, …, 503)

Physical layer cell identity

CyclicPrefix

'Normal' (default), 'Extended'

Cyclic prefix length

CFI

1, 2, or 3. scalar or if the CFI varies per subframe, a vector of length 10 (corresponding to a frame).

Control format indicator (CFI) value. In TDD mode, CFI varies per subframe for the RMCs ('R.0', 'R.5', 'R.6', 'R.6-27RB', 'R.12-9RB')

See footnote 1

Ng

'Sixth', 'Half', 'One', 'Two'

HICH group multiplier

PHICHDuration

'Normal', 'Extended'

PHICH duration

NFrame

0 (default), nonnegative scalar integer

Frame number

NSubFrame

0 (default), nonnegative scalar integer

Subframe number

TotSubFrames

Positive scalar integer

Total number of subframes to generate

Windowing

Nonnegative scalar integer

Number of time-domain samples over which windowing and overlapping of OFDM symbols is applied

DuplexMode

'FDD' (default), 'TDD'

Duplexing mode, specified as:

  • 'FDD' for Frequency Division Duplex or

  • 'TDD' for Time Division Duplex

The following fields are only present when DuplexMode is 'TDD'.

  TDDConfig

0 (default), 1, 2, 3, 4, 5, 6

Uplink or downlink configuration

  SSC

0 (default), 1, 2, 3, 4, 5, 6, 7, 8, 9

Special subframe configuration (SSC)

The following field is only present for 'Port7-14' transmission scheme
  CSIRSPeriod

'On' (default), 'Off', Icsi-rs (0,...,154), [Tcsi-rs Dcsi-rs]

CSI-RS subframe configurations for one or more CSI-RS resources. Multiple CSI-RS resources can be configured from a single common subframe configuration or from a cell array of configurations for each resource.

The following fields are only present for 'Port7-14' transmission scheme and only required if CSIRSPeriod is not set to 'Off‘.

  CSIRSConfig

Scalar integer

Array CSI-RS configuration indices. See TS 36.211, Table 6.10.5.2-1 .

  CSIRefP

1 (default), 2, 4, 8

Array of number of CSI-RS antenna ports

The following field is only present for 'Port7-14' transmission scheme
  ZeroPowerCSIRSPeriod

'Off' (default), 'On', Icsi-rs, (0,...,154), [Tcsi-rs Dcsi-rs]

Cell array of zero-power CSI-RS resource subframe configuration

The following field is only present for 'Port7-14' transmission scheme and only required if ZeroPowerCSIRSPeriod is not set to 'Off‘.

  ZeroPowerCSIRSConfig

16-bit bitmap string (truncated if not 16 bits or '0' MSB extended), or a numerical list of CSI-RS configuration indices.

Zero-power CSI-RS resource configuration index list. See TS 36.211, Section 6.10.5.2 and the 4 CSI reference signal column in Tables 6.10.5.2-1 and 6.10.5.2-2.

PDSCH

Scalar structure

PDSCH transmission configuration substructure

OCNGPDCCHEnable

'Off', 'On'

Enable PDCCH OCNG

See footnote 2

OCNGPDCCHPower

Scalar integer, 0 (default)

PDCCH OCNG power in dB

OCNGPDSCHEnable

'Off', 'On'

Enable PDSCH OCNG

OCNGPDSCHPower

Scalar integer, defaults to PDSCH.Rho (default)

PDSCH OCNG power in dB

OCNGPDSCH

Scalar structure

PDSCH OCNG configuration substructure

OCNG

'Off', 'On'. ‘Disable' and 'Enable' are also accepted.

OFDMA channel noise generator.

    Note:   This parameter will be removed in a future release. Use the PDCCH and PDSCH-specific OCNG parameters instead.

  1. CFI is equal to the number of symbols allocated to:

    • PDCCH - 1 for NDLRB < 10

    • PDCCH for NDLRB >= 10

    For the RMCs, the number of symbols allocated to PDCCH varies with channel bandwidth setting,

    • Two symbols for 20 MHz, 15 MHz, and 10 MHz

    • Three symbols for 5 MHz and 3 MHz

    • Four symbols for 1.4 MHz

    In the TDD mode, only two OFDM symbols are allocated to PDCCH in subframes 1 and 6 irrespective of the channel bandwidth. Therefore, the CFI value varies per subframe for the 5 MHz, 3 MHz and 1.4 MHz channel bandwidths. Specifically, for bandwidths where PDCCH symbol allocation is not two in other subframes.

  2. The PDCCH OCNG fills the unused PDCCH resource elements with QPSK symbols using either single port or transmit diversity depending on the number of cell RS ports.

PDSCH substructure

The substructure PDSCH relates to the physical channel configuration and contains these fields:

Parameter FieldValuesDescription
TxScheme

Default TxScheme is RMC-dependent. Valid values include: 'SpatialMux', 'Port0', 'TxDiversity', 'CDD', 'MultiUser', 'Port5', 'Port7-8', 'Port8', 'Port7-14'

PDSCH transmission scheme, specified as one of the following options.
  • 'Port0' — Single-antenna port, port 0

  • 'TxDiversity' — Transmit diversity scheme

  • 'CDD' — Large delay CDD scheme

  • 'SpatialMux' — Closed-loop spatial multiplexing

  • 'MultiUser' — Multiuser MIMO scheme

  • 'Port5' — Single-antenna port, port 5

  • 'Port7-8' — Single-antenna port, port 7 (when NLayers = 1). Dual layer transmission, ports 7 and 8 (when NLayers = 2).

  • 'Port8' — Single-antenna port, port 8

  • 'Port7-14' — Up to eight-layer transmission, ports 7–14

Modulation

('QPSK', '16QAM', '64QAM', '256QAM') String or cell array of strings.

Modulation type, specified as a string or cell array of strings. If 2 blocks, each cell is associated with a transport block.

NLayers

1 (default), 2, 3, 4, 5, 6, 7, 8

Number of transmission layers

NTxAnts

Nonnegative scalar integer

Number of transmission antenna ports. This argument is only present for UE-specific demodulation reference symbols.

Rho

0 (default), Scalar

PDSCH resource element power allocation, in dB

RNTI

Scalar integer

Radio network temporary identifier (RNTI) value (16 bits)

RVSeq

Integer vector (0,1,2,3)[a]

Specifies the sequence of Redundancy Version (RV) indicators for each HARQ process. The number of elements in each row is equal to the number of transmissions in each HARQ process. If RVSeq is a row vector in a two codeword transmission, then the same RV sequence is applied to both codewords

RV

Integer vector (0,1,2,3)[b]

Specifies the redundancy version for one or two codewords used in the initial subframe number, NSubframe. This parameter field is only for informational purposes and is Read-Only.

NHARQProcesses(1, 2, 3, 4, 5, 6, 7, 8)

Nonnegative scalar integer

Number of HARQ processes

NTurboDecits

5 (default), Nonnegative scalar integer

Number of turbo decoder iteration cycles

PRBSetColumn vector or cell array.

Zero-based physical resource block (PRB) indices corresponding to the slot wise resource allocations for this PDSCH. PRBSet can be assigned as:

  • a column vector, the resource allocation is the same in both slots of the subframe,

  • a two-column matrix, this parameter specifies different PRBs for each slot in a subframe,

  • a cell array of length 10 (corresponding to a frame, if the allocated physical resource blocks vary across subframes).

PRBSet varies per subframe for the RMCs 'R.25'(TDD), 'R.26'(TDD), 'R.27'(TDD), 'R.43'(FDD), 'R.44', 'R.45', 'R.48', 'R.50', and 'R.51'.

[c]
TrBlkSizes

One or two row numeric matrix

Transport block sizes for each subframe in a frame

CodedTrBlkSizes

One or two row numeric matrix

Coded transport block sizes for one or two codewords. This parameter field is only for informational purposes.

DCIFormat

'Format0', 'Format1', 'Format1A', 'Format1B', 'Format1C', 'Format1D', 'Format2', 'Format2A', 'Format2B', 'Format2C', 'Format2D', 'Format3', 'Format3A', 'Format4'

Downlink control information (DCI) format type string of PDCCH associated with the PDSCH. See lteDCI.

PDCCHFormat

0, 1, 2, 3

Aggregation level of PDCCH associated with PDSCH

PDCCHPowerScalar

PDCCH power in dB

CSIMode

'PUCCH 1-0', 'PUCCH 1-1', 'PUSCH 1-2', 'PUSCH 3-0', 'PUSCH 3-1'

CSI reporting mode

PMIMode

'Wideband' (default), 'Subband'

PMI reporting mode

The following field is only present for TxScheme = 'SpatialMux'.
  PMISet

Integer vector (0, ..., 15)

Precoder matrix indication (PMI) set. It can contain either a single value, corresponding to single PMI mode, or multiple values, corresponding to multiple or subband PMI mode. The number of values depends on CellRefP, transmission layers and TxScheme. For more information about setting PMI parameters, see ltePMIInfo.

The following field is only present for TxScheme = 'Port7-8', 'Port8', or 'Port7-14'.
  NSCID

0 (default), 1

Scrambling identity (ID)

Present only for 'Port7-8', 'Port8', and 'Port7-14' transmission schemes.

The following field is only present for UE-specific beamforming ('Port5', 'Port7-8', 'Port8', or 'Port7-14').
  W

Numeric matrix, [] (default)

Present only for wideband UE-specific beamforming ('Port5', 'Port7-8','Port8','Port7-14'). The NLayers-by-NTxAnts precoding matrix chosen according to TS 36.101 Annex B.4. The resulting precoding matrix is randomly selected from:

  • the set defined in TS 36.211 Section 6.3.4 for 'Port5', 'Port7-8' and 'Port8' transmission schemes

  • or from the set associated with CSI reporting as defined in TS 36.213 Section 7.2.4 for the 'Port7-14' transmission scheme.

For R.48, the precoding matrix corresponding to PMI=0 is used.

[a] A one or two row matrix (for one or two codewords)

[b] A one or two column matrix (for one or two codewords)

[c] The function returns valid TrBlkSizes and CodedTrBlkSizes set to 0 when PRBSet is empty, indicating there is no PDSCH allocation in this frame.

OCNGPDSCH substructure

The substructure, OCNGPDSCH, defines the OCNG patterns in associated RMCs and tests according to TS 36.101, Section A.5 [1]. OCNGPDSCH contains these fields which can also be customized with the full range of PDSCH-specific values.

Parameter FieldValuesDescription
Modulation

('QPSK', '16QAM', '64QAM', '256QAM') String or cell array of strings.

Modulation type, specified as a string or cell array of strings. If 2 blocks, each cell is associated with a transport block.

TxScheme

Default TxScheme is RMC-dependent. Valid values include: 'SpatialMux', 'Port0', 'TxDiversity', 'CDD', 'MultiUser', 'Port5', 'Port7-8', 'Port8', 'Port7-14'

OCNG transmission scheme, specified as one of the following options.
  • 'Port0' — Single-antenna port, port 0

  • 'TxDiversity' — Transmit diversity scheme

  • 'CDD' — Large delay CDD scheme

  • 'SpatialMux' — Closed-loop spatial multiplexing

  • 'MultiUser' — Multiuser MIMO scheme

  • 'Port5' — Single-antenna port, port 5

  • 'Port7-8' — Single-antenna port, port 7 (when NLayers = 1). Dual layer transmission, ports 7 and 8 (when NLayers = 2).

  • 'Port8' — Single-antenna port, port 8

  • 'Port7-14' — Up to eight-layer transmission, ports 7–14

RNTI

Scalar integer

default 0

Radio network temporary identifier (RNTI) value (16 bits) for OCNG

References

[1] 3GPP TS 36.101. "User Equipment (UE) radio transmission and reception." 3rd Generation Partnership Project; Technical Specification Group Radio Access Network; Evolved Universal Terrestrial Radio Access (E-UTRA). URL: http://www.3gpp.org.

[2] 3GPP TS 36.211. "Physical channels and modulation." 3rd Generation Partnership Project; Technical Specification Group Radio Access Network; Evolved Universal Terrestrial Radio Access (E-UTRA). URL: http://www.3gpp.org.

[3] 3GPP TS 36.213. "Physical layer procedures." 3rd Generation Partnership Project; Technical Specification Group Radio Access Network; Evolved Universal Terrestrial Radio Access (E-UTRA). URL: http://www.3gpp.org.

[4] 3GPP TS 36.321. "Medium Access Control (MAC) protocol specification." 3rd Generation Partnership Project; Technical Specification Group Radio Access Network; Evolved Universal Terrestrial Radio Access (E-UTRA). URL: http://www.3gpp.org.

Introduced in R2014a

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