公开(公告)号：US20130170533A1

公开(公告)日：2013-07-04

申请号：US13629034

申请日：2012-09-27

Applicant: Nec Laboratories America, Inc.

Inventor： Mohammad A. Khojastepour ,  Xinyu Zhang ,  Karthikeyan Sundaresan ,  Sampath Rangarajan

IPC: H04B7/04

CPC classification number: H04B7/0456 ,  H04B7/024

Abstract: In a multiple-input multiple-output (MIMO) wireless system supporting Coordinated Multi-Point (CoMP) transmission and having a first base station, a second base station, and a user equipment, a communications method implemented in the first base station is disclosed. In an aspect, the communications method includes exchanging, with the second base station through local information exchange, first information about a first channel between the first base station and the user equipment and second information about a second channel between the second base station and the user equipment, and computing at least one of a precoding matrix, a receiver filter, and a projection matrix, wherein the user equipment estimates the first information and the second information, and shares the first information and the second information with the first base station. Other apparatuses and some methods for wireless communications also are disclosed.

Abstract translation: 在支持协调多点（CoMP）传输并具有第一基站，第二基站和用户设备的多输入多输出（MIMO）无线系统中，公开了在第一基站中实现的通信方法 。 一方面，通信方法包括通过本地信息交换与第二基站交换关于第一基站和用户设备之间的第一信道的第一信息和关于第二基站与用户之间的第二信道的第二信息 设备，以及计算预编码矩阵，接收机过滤器和投影矩阵中的至少一个，其中用户设备估计第一信息和第二信息，并与第一基站共享第一信息和第二信息。 还公开了用于无线通信的其它装置和一些方法。

公开(公告)号：US20130064218A1

公开(公告)日：2013-03-14

申请号：US13671659

申请日：2012-11-08

Applicant: NEC LABORATORIES AMERICA, INC.

Inventor： Karthikeyan Sundaresan ,  Sampath Rangarajan

IPC: H04B15/00 ,  H04W72/04

CPC classification number: H04W72/04 ,  H04L5/0023 ,  H04W72/042 ,  H04W72/0486 ,  H04W84/045

Abstract: A method implemented in a wireless network including a first base station and a second base station is disclosed. The method includes, upon a change in a load condition, transmitting from the second base station to the first base station load information through backhaul in order to coordinate the first base station and the second base station, allocating, to the second base station, one or more tiles corresponding to one or more time-frequency resource blocks of orthogonal frequency division multiple access (OFDMA), and allocating remaining tiles to the first base station. Other methods and apparatuses are also disclosed.

Abstract translation: 公开了一种在包括第一基站和第二基站的无线网络中实现的方法。 该方法包括在负载状况发生变化时，通过回程从第二基站向第一基站发送负载信息，以便协调第一基站和第二基站，向第二基站分配一个 或更多对应于正交频分多址（OFDMA）的一个或多个时频资源块的瓦片，以及将剩余的瓦片分配给第一基站。 还公开了其它方法和装置。