公开(公告)号：EP2440000B8

公开(公告)日：2016-01-06

申请号：EP11192430.4

申请日：2009-12-18

申请人： NEC Corporation

发明人： Prasad, Narayan ,  Khojastepour, Mohammad Ali ,  Jiang, Meilong ,  Wang, Xiaodong ,  Rangarajan, Sampath

IPC分类号： H04L25/02 ,  H04B7/04 ,  H04W28/04 ,  H04W72/12 ,  H04L1/20 ,  H04L27/00 ,  H04L1/00 ,  H04L5/00 ,  H04W72/04 ,  H04B7/06 ,  H04W8/26

CPC分类号： H04W72/04 ,  H04B7/0452 ,  H04B7/0639 ,  H04B7/066 ,  H04L1/0003 ,  H04L1/0009 ,  H04L1/0025 ,  H04L1/0026 ,  H04L1/20 ,  H04L5/0007 ,  H04L25/0208 ,  H04W8/26 ,  H04W28/04 ,  H04W52/346 ,  H04W72/0446 ,  H04W72/12 ,  H04W72/1231 ,  H04W72/1289

摘要： Methods and systems for conveying or transmitting to any given user in an OFDMA-MU-MIMO system scheduling information of other co-scheduled users to permit the user to perform error-correction on received data and/or interference reduction on its received signals. The scheduling information can include resource block assignment, modulation constellations employed, coding rates employed, power levels utilized and precoder matrix indices used. Further, the scheduling information can be conveyed in part through dedicated reference symbol layers or pilot streams. Moreover, a base station may transmit a preliminary estimate of the total number of users the base station expects to schedule, or an upper-bound on the total number of users, to the MU-MIMO users to permit the MU-MIMO users to determine preferred precoder matrix indices and indications of channel quality indices.

公开(公告)号：EP2439999B1

公开(公告)日：2014-09-24

申请号：EP11192407.2

申请日：2009-12-18

申请人： NEC Corporation

发明人： Prasad, Narayan ,  Khojastepour, Mohammad Ali ,  Jiang, Meilong ,  Wang, Xiaodong ,  Rangarajan, Sampath

IPC分类号： H04W72/12 ,  H04L27/00 ,  H04L1/20 ,  H04L5/00 ,  H04W8/26 ,  H04W72/08 ,  H04W72/04 ,  H04L1/00 ,  H04W28/04

CPC分类号： H04W72/04 ,  H04B7/0452 ,  H04B7/0639 ,  H04B7/066 ,  H04L1/0003 ,  H04L1/0009 ,  H04L1/0025 ,  H04L1/0026 ,  H04L1/20 ,  H04L5/0007 ,  H04L25/0208 ,  H04W8/26 ,  H04W28/04 ,  H04W52/346 ,  H04W72/0446 ,  H04W72/12 ,  H04W72/1231 ,  H04W72/1289

摘要： Methods and systems for conveying or transmitting to any given user in an OFDMA-MU-MIMO system scheduling information of other co-scheduled users to permit the user to perform error-correction on received data and/or interference reduction on its received signals. The scheduling information can include resource block assignment, modulation constellations employed, coding rates employed, power levels utilized and precoder matrix indices used. Further, the scheduling information can be conveyed in part through dedicated reference symbol layers or pilot streams. Moreover, a base station may transmit a preliminary estimate of the total number of users the base station expects to schedule, or an upper-bound on the total number of users, to the MU-MIMO users to permit the MU-MIMO users to determine preferred precoder matrix indices and indications of channel quality indices.