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LTE-BL/CE (LTE-M1) - PUSCH Subframe Assignment


In LTE-M1, PUSCH can be transmitted repeatedly to increase cell coverage. This process is defined in 36.213-8.0 UE procedure for transmitting the physical uplink shared channel and can be illustrated as follows :



The two tables defining N values are defined as follows.


< 36.213-Table 8.2b: PUSCH repetition levels (DCI Format 6-0A) >


< 36.213-Table 8.2c: PUSCH repetition levels (DCI Format 6-0B) >


The importantant thing to be noticed is that there are big difference between CEmodeA and CEmodeB in terms of max Number Repetition.  In General, CE Mode B perform much more repetition.

PUSCH-maxNumRepetitionCEmodeA/B would be configured in RRC Connection Setup or RRC Connection Reconfiguration via following IEs(information elements)


PUSCH-ConfigCommon-v1310 ::=    SEQUENCE {

  pusch-maxNumRepetitionCEmodeA-r13  ENUMERATED { r8, r16, r32 }

  pusch-maxNumRepetitionCEmodeB-r13  ENUMERATED {r192,r256,r384,r512,r768,r1024,r1536,r2048}  

  pusch-HoppingOffset-v1310          INTEGER (1..maxAvailNarrowBands-r13)






[1] 3GPP TS 36.213 V13.2.0 (2016-06) Physical layer procedures