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PHY (RAN1) LTE/LTE-A 6.3 Enhanced Downlink Multiple Antenna Transmission 6.3.1 CSI RS 6.4 Uplink Multiple Antenna Transmission 6.4.1 Transmission modes and Signalling requirements for SU-MIMO 6.5 UL RS issues relevant to LTE-A Work Items 6.5.1 DM RS 6.5.3 SRS MIMO LTE/LTE-A 6.3 Enhanced Downlink Multiple Antenna Transmission 6.3.2 CSI feedback 6.4 Uplink Multiple Antenna Transmission 6.4.4 PDCCH TxD LTE-A 5

Tentative Schedule RAN1#62bis 9 am Coffee 10:30-11:00 Lunch Coffee 16:00-16:30 Monday Tuesday Wednesday Thursday Friday 1, 2, 3 4 LSs 6, 6.1 CRs, Params PUCCH TxD 6.4.4 eicic 6.8.1.1 6.6.1 R-PDCCH search space 6.3.2.1 6.3.2.3 Relay 6.6.2 6.6.3 6.6.4 CA 6.2.2 HSPA TDD 5.1.2 5.2 5.3 5.4 HSPA FDD 5.1.1 Net Pos 6.7 eicic 6.8.1.1 6.8.1.2 (6.8.2) CA 6.2.1 8:30 UL UL 9:30 MIMO & RS 6.5.2 6.4.1 6.4.2 6.4.3 (6.5.1) Feedback Feed- Back 6.3.2 6.3.3 DCI CA 6.2.1 6.2.3 MIMO UL RS 6.5.1 6.5.2 CSI RS 6.3.1 Continuation if necessary: 6.2 CA 6.3.2 Feedback 6.6 Relay 6.8 eicic Revisions etc 8:00 Grand Ballroom AB Nice (Floor 2) (Floor 3) Grand Ballroom A Grand Ballroom B 6

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SC-FDMA symbol s 1 t 1 SC-FDMA symbol s 1 s 2 s 3 s 4 s 5 s 6 s 7 s 8 s 9 s 10 s 11 s 12 Alamouti STBC s 2 s 3 s 4 s 5 s 6 s 7 s 8 s 9 s 10 t 2 t 3 t 4 t 5 t 6 t 7 t 8 t 9 t 10 s 11 t 11 t 12 s 12 s 2 -s 1 s 4 -s 3 s 6 -s 5 s 8 -s 7 s 10 -s 9 t 1 t 2 t 3 t 4 t 5 t 6 t 7 t 8 t 9 t 10 s 12 t 11 t 12 -s 11 DFT-12 DFT-12 f 5 f 6 f 7 f 8 f 9 0 1 2 f 5 f 6 f 7 f 8 f 9 0 1 2 IFFT IFFT OCC w 1 SC-FDMA symbol to be transmitted on antenna 1 OCC w 1 SC-FDMA symbol to be transmitted on antenna 2 13

SC-FDMA symbol s 1 Encoded data DFT-12 f 5 f 6 f 7 f 8 f 9 0 1 2 SC-FDMA symbol s 1 s 2 s 3 s 4 s 5 s 6 s 7 s 8 s 9 s 10 s 11 s 12 f 5 f 6 f 7 f 8 f 9 0 1 2 Alamouti SFBC with low CM f 5 f 7 f 8 f 9 0 s 2 s 3 s 4 s 5 s 6 s 7 s 8 s 9 s 10 f 6 f 5 1 s 11 s 12 f 6 f 7 f 8 f 9 0 2 1 f 5 f 7 f 8 f 9 0 -s 6 s 5 -s 4 s 3 -s 2 s 1 -s 7 s 8 -s 9 s 10 2 f 6 f 5 1 f 6 f 7 f 8 f 9 0 -s 11 2 s 12 2 1 IFFT IFFT OCC w 1 SC-FDMA symbol to be transmitted on antenna 1 OCC w 1 SC-FDMA symbol to be transmitted on antenna 2 14

SC-FDMA symbol Encoded data S/P DFT-6 s 1 0 s 2 0 IFFT OCC w 1 SC-FDMA symbol to be transmitted on antenna 1 DFT-6 0 s 1 0 s 2 IFFT OCC w 1 SC-FDMA symbol to be transmitted on antenna 2 SC-FDMA symbol OCC w 1 Encoded data DFT-12 s 1 s 2 s 3 s 4 IFFT S/P OCC w 2 SC-FDMA symbol to be transmitted on antenna 1 SC-FDMA symbol to be transmitted on antenna 2 15

Candidates STBC SFBC FSTD SORTD Pros - Only one orthogonal resource is needed for data symbols - The A/N performance is good in general particularly in flat fading - Only one orthogonal resource is needed for data symbols - The A/N performance is good in general particularly in frequency selective fading - Only one orthogonal resource is needed for data symbols - It shows the best A/N performances among the alternatives - It would have minimum specification efforts Cons - The A/N performance is worse than SORTD - It needs two 12-point DFT operations to make STBC signals - The A/N performance is worse than SORTD - The A/N performance is worst among the alternatives - A new 6-point DFT/IDFT function is necessary in Rel-10 - It requires two orthogonal resources for data symbols SORTD 2 Format 3 No: Qualcomm, CATT, Huawei, HiSilicon, ZTE, AT&T Yes: Esicsson, ST-Ericsson, LGe Format 3 SORTD SORTD - 16

#62 s_n Channel selector Ch1 Ch2 Ch3 Adder Antenna port 0 Ch4 Channel selector Ch5 Ch6 Ch7 Adder Antenna port 1 Ch8 17

A/ N bits Antenna port#1 Antenna port#2 b0 b1 b2 b3 Ch#1 Ch#2 Ch#3 Ch#4 Ch#5 Ch#6 Ch#7 Ch#8 0 0 0 0 s0 s0 0 0 0 1 s1 s1 0 0 1 0 s2 s2 0 0 1 1 s3 s3 0 1 0 0 s0 s0 0 1 0 1 s1 s1 0 1 1 0 s2 s2 0 1 1 1 s3 s3 1 0 0 0 s0 s0 1 0 0 1 s1 s1 1 0 1 0 s2 s2 1 0 1 1 s3 s3 1 1 0 0 s0 s0 1 1 0 1 s1 s1 1 1 1 0 s2 s2 1 1 1 1 s3 s3 s_n Channel selector Ch1 Ch2 Ch3 Adder Antenna port 0 Ch4 Channel selector Ch1 Ch2 Ch3 Adder Antenna port 1 Ch4 18

A/ N bits Antenna port#1 Antenna port#2 b0 b1 b2 b3 Ch#1 Ch#2 Ch#3 Ch#4 Ch#1 Ch#2 Ch#3 Ch#4 0 0 0 0 s0 s0 0 0 0 1 s1 s1 0 0 1 0 s2 s2 0 0 1 1 s3 s3 0 1 0 0 s0 s0 0 1 0 1 s1 s1 0 1 1 0 s2 s2 0 1 1 1 s3 s3 1 0 0 0 s0 s0 1 0 0 1 s1 s1 1 0 1 0 s2 s2 1 0 1 1 s3 s3 1 1 0 0 s0 s0 1 1 0 1 s1 s1 1 1 1 0 s2 s2 1 1 1 1 s3 s3 s_n Channel selector Ch1 Ch2 Ch3 Adder Antenna port 0 Ch4 -conj(s_n) when Ch2 is selected for ant0 Otherwise, 0 conj(s_n) when Ch1 is selected for ant0 Otherwise, 0 Ch1 Ch2 Adder Antenna port 1 -conj(s_n) when Ch4 is selected for ant0 Otherwise, 0 Ch3 conj(s_n) when Ch3 is selected for ant0 Otherwise, 0 Ch4 19

Data Bits Antenna Port #1 Antenna Port #2 bo b1 b2 b3 CE#0 CE#1 CE#2 CE#3 CE#0 CE#1 CE#2 CE#3 0 0 0 0 s0 0 0 0 0 s0 0 0 0 0 0 1 s1 0 0 0 0 s1 0 0 0 0 1 0 s2 0 0 0 0 s2 0 0 0 0 1 1 s3 0 0 0 0 s3 0 0 0 1 0 0 0 s0 0 0 -s0 0 0 0 0 1 0 1 0 s1 0 0 -s1 0 0 0 0 1 1 0 0 s2 0 0 -s2 0 0 0 0 1 1 1 0 s3 0 0 -s3 0 0 0 1 0 0 0 0 0 s0 0 0 0 0 s0 1 0 0 1 0 0 s1 0 0 0 0 s1 1 0 1 0 0 0 s2 0 0 0 0 s2 1 0 1 1 0 0 s3 0 0 0 0 s3 1 1 0 0 0 0 0 s0 0 0 -s0 0 1 1 0 1 0 0 0 s1 0 0 -s1 0 1 1 1 0 0 0 0 s2 0 0 -s2 0 1 1 1 1 0 0 0 s3 0 0 -s3 0 Candidates SORTD MSORTD SCBC Pros - It shows the best performances in all considered scenarios and in all bit ranges - For 2 A/N bits, the second resources for SORTD can be directly induced without concerning resource overhead from two DL grants in carrier aggregation - The same resource overhead can be kept in 3 and 4 A/N bits - Same resource overhead can be kept as single tx transmission while getting spatial diversity gain Cons - The required orthogonal resources become double - The number of needed orthogonal resources for 3 and 4 A/N bits is 6 and 8, respectively - No solution for 2 A/N bits - Even worse A/N performance than single antenna transmission due to performance loss in resource selection domain - Loss in resource domain results in performance degradation for Pr(NACK->ACK) - Spatial diversity gain only on constellation domain which is relative to Pr(ACK->NACK/ DTX) - A/N performance is worse than SORTD - No SNR gain over single tx in 2 A/N bits 20