公开(公告)号：WO2010080631A3

公开(公告)日：2010-09-30

申请号：PCT/US2009068804

申请日：2009-12-18

Applicant: NEC LAB AMERICA INC

Inventor： PRASAD NARAYAN ,  KHOJASTEPOUR MOHAMMAD ALI ,  JIANG MEILONG ,  WANG XIAODONG ,  RANGARAJAN SAMPATH

IPC: H04B7/208 ,  H04B7/04 ,  H04W72/12

CPC classification number: 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

Abstract: 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.

Abstract translation: 用于向OFDMA-MU-MIMO系统中的任何给定用户传达或发送其他共同调度用户的调度信息的方法和系统，以允许用户对接收到的数据执行误差校正和/或对其接收到的信号执行干扰降低。 调度信息可以包括资源块分配，所采用的调制星座，采用的编码率，所使用的功率电平以及所使用的预编码器矩阵索引。 此外，调度信息可以部分通过专用参考符号层或导频流来传送。

公开(公告)号：WO2012021226A3

公开(公告)日：2012-03-29

申请号：PCT/US2011043013

申请日：2011-07-06

Applicant: NEC LAB AMERICA INC

Inventor： KHOJASTEPOUR MOHAMMAD ,  PRASAD NARAYAN ,  RANGARAJAN SAMPATH

IPC: H04L27/26 ,  H04B7/04 ,  H04B7/26

CPC classification number: H04B7/0452 ,  H04B7/0632 ,  H04B7/0639 ,  H04B7/0665 ,  H04L5/0023 ,  H04L5/0094

Abstract: Systems and methods for conveying wireless transmission allocation information are disclosed. In accordance with one method, an index indicating selected data stream parameters is received. In addition, an indication of a number of transmit antennas at a transmitter from which the data stream is transmitted is also received. Further, the selected parameters are determined from the index based on the number of transmit antennas at the transmitter. Moreover, data signals are received and processed with a processor in accordance with the selected data stream parameters.

Abstract translation: 公开了用于传送无线传输分配信息的系统和方法。 根据一种方法，接收指示所选数据流参数的索引。 另外，还接收发送数据流的发射机处的发射天线的数量的指示。 此外，所选择的参数是基于发射机处的发射天线的数量从索引确定的。 而且，数据信号根据选择的数据流参数由处理器接收和处理。

公开(公告)号：WO2010080632A2

公开(公告)日：2010-07-15

申请号：PCT/US2009068808

申请日：2009-12-18

Applicant: NEC LAB AMERICA INC

Inventor： PRASAD NARAYAN ,  KHOJASTEPOUR MOHAMMAD ALI ,  JIANG MEILONG ,  WANG XIAODONG ,  RANGARAJAN SAMPATH

IPC: H04B7/208 ,  H04B7/04 ,  H04W72/12

CPC classification number: 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

Abstract: 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.

Abstract translation: 在OFDMA-MU-MIMO系统中向任何给定用户传送或发送给其他协调调度用户的信息的方法和系统，以允许用户对接收到的数据执行纠错和/或对其接收信号的干扰减少。 调度信息可以包括资源块分配，采用的调制星座，采用的编码率，使用的功率电平和使用的预编码器矩阵索引。 此外，可以部分地通过专用参考符号层或导频流来传送调度信息。 此外，基站可以向MU-MIMO用户发送基站期望调度的用户总数或总用户数的上限的初步估计，以允许MU-MIMO用户确定 优选的预编码器矩阵索引和信道质量指标的指示。