4G/LTE - UE Multiplexing

  

 

 

 

NOMA, Enhanced MU-MIMO, NAIC

 

NOMA stands for Non Orthogonal Multiple Access. Enhanced MU-MIMO stands for Enhanced Multi User MIMO and NAIC stands for Network Assisted Interference Cancellation.

Overall concept and motivations on why these concepts are being considered can be illustrated as below.

 

 

As of now (Mar 2016),  Only NAIC is officially included in 3GPP TS 36.300 / 36.331. Enhanced MU-MIMO is at the stage of TR under the name of MUST (TR 36.859) and NOMA may be combined into the activities of TR 36.859.

 

Following is the RRC components of NAIC included in Rel 12 ASN.

    +-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 [11111]

      | +-EXTENSION ::= SEQUENCE [1111]

      |   +-VERSION-BRACKETS1 ::= SEQUENCE [0] OPTIONAL:Exist

      |   | +-rlf-TimersAndConstants-r9 ::= CHOICE OPTIONAL:Omit

      |   +-VERSION-BRACKETS2 ::= SEQUENCE [0] OPTIONAL:Exist

      |   | +-measSubframePatternPCell-r10 ::= CHOICE OPTIONAL:Omit

      |   +-VERSION-BRACKETS3 ::= SEQUENCE [0] OPTIONAL:Exist

      |   | +-neighCellsCRS-Info-r11 ::= CHOICE OPTIONAL:Omit

      |   +-VERSION-BRACKETS4 ::= SEQUENCE [1] OPTIONAL:Exist

      |     +-naics-Info-r12 ::= CHOICE [setup] OPTIONAL:Exist

      |       +-setup ::= SEQUENCE [111]

      |         +-neighCellsToReleaseList-r12 ::= SEQUENCE OF SIZE(1..maxNeighCell-r12[8]) [1]

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

      |         +-neighCellsToAddModList-r12 ::= SEQUENCE OF SIZE(1..maxNeighCell-r12[8]) [1]

      |         | +-NeighCellsInfo-r12 ::= SEQUENCE [0]

      |         |   +-physCellId-r12 ::= INTEGER (0..503) [0]

      |         |   +-p-b-r12 ::= INTEGER (0..3) [0]

      |         |   +-crs-PortsCount-r12 ::= ENUMERATED [n1]

      |         |   +-mbsfn-SubframeConfig-r12 ::= SEQUENCE OF OPTIONAL:Omit

      |         |   +-p-aList-r12 ::= SEQUENCE OF SIZE(1..maxP-a-PerNeighCell-r12[3]) [1]

      |         |   | +-P-a ::= ENUMERATED [dB-6]

      |         |   +-transmissionModeList-r12 ::= BIT STRING SIZE(8) [00000000]

      |         |   +-resAllocGranularity-r12 ::= INTEGER (1..4) [1]

      |         |   +-EXTENSION ::= SEQUENCE

      |         +-servCellp-a-r12 ::= ENUMERATED [dB-6] OPTIONAL:Exist

     

 

 

Reference :

 

[1] RP-141405 :

     Motivation for Enhanced MU-MIMO and Network Assisted Interference Cancellation

[2] RP-141165 :

     Justification for NOMA in New Study on Enhanced MU-MIMO and Network Assisted Interference Cancellation

[3] Non-orthogonal Multiple Access and Massive MIMO for Improved Spectrum Efficiency

     by Anritsu

[4] 3GPP TR 36.859 - Study on Downlink Multiuser Superposition Transmission (MUST) for LTE (Release 13)

[5] 3GPP 36.300 - 23.9 Network-assisted interference cancellation/suppression