WF on CQI Table for eMTC ZTE, Sony, Nokia, Ericsson, Samsung… R1-1578833GPP TSG RAN WG1 #83 Anaheim, USA, 15th – 22nd November, 2015 Agenda item 6.2.1.8.

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Presentation transcript:

WF on CQI Table for eMTC ZTE, Sony, Nokia, Ericsson, Samsung… R GPP TSG RAN WG1 #83 Anaheim, USA, 15th – 22nd November, 2015 Agenda item

Background The number of subframes M (>1) that CSI reference resource spans is predefined or implicitly derived from CE level. The value of M Alt 1: reuse existing CQI table for 64QAM, no new CQI entries Measurement is based M subframes Alt 1.1: reuse existing CQI table for 64QAM, while 6 entries corresponding to the highest SEs are reserved Measurement is based M subframes Alt 2: replacing 6 entries in the existing CQI table for 64QAM Measurement is based M subframes

Proposal for CQI table for MTC UE For MTC UE in Mode A, choose from the options below Option 1: Replacing 6 entries in the existing CQI table for 64QAM with QPSK Option 2: Add only one new QPSK entry with lower code rate (64QAM entries in the existing CQI table are not used )

Proposed table for option 1 (Values taken from various companies tdocs) CQI indexmodulationcode rate x 1024efficiency 0out of range 1QPSK QPSK QPSK QPSK QPSK QPSK QPSK QPSK QPSK QPSK QPSK QPSK QAM QAM QAM

Proposed table for option 2 (Values taken from various companies tdocs) CQI indexmodulationcode rate x 1024efficiency 0out of range 1QPSK[40][0.0781] 2QPSK QPSK QPSK QPSK QPSK QPSK QAM QAM QAM