公开(公告)号：US20090180405A1

公开(公告)日：2009-07-16

申请号：US12195087

申请日：2008-08-20

Applicant: Alexei E. Ashikhmin ,  Jubin Jose ,  Philip Alfred Whiting

Inventor： Alexei E. Ashikhmin ,  Jubin Jose ,  Philip Alfred Whiting

IPC: H04B7/212

CPC classification number: H04B7/0452 ,  H04B7/0434 ,  H04B7/0626

Abstract: A multiple-input, multiple-output (MIMO) communication system is configured to perform user scheduling and associated precoding. The system includes multiple terminals and at least one base station configured to communicate with the terminals. The base station is operative to obtain channel vectors for respective ones of the terminals, to select a subset of the terminals based on magnitudes of the respective channel vectors, to compute a precoding matrix using the channel vectors of the selected subset of terminals, and to utilize the preceding matrix to control transmission to the selected subset of terminals. The system may be, for example, a time-division duplex (TDD) multi-user MIMO system in which the multiple terminals comprise autonomous single-antenna terminals.

Abstract translation: 多输入多输出（MIMO）通信系统被配置为执行用户调度和相关联的预编码。 该系统包括多个终端和被配置为与终端进行通信的至少一个基站。 基站可操作以获得各个终端的信道向量，基于各个信道向量的大小来选择终端的子集，以使用所选择的终端子集的信道向量来计算预编码矩阵，并且 利用前面的矩阵来控制到所选择的终端子集的传输。 该系统可以是例如时分双工（TDD）多用户MIMO系统，其中多个终端包括自主单天线终端。

公开(公告)号：US09148908B2

公开(公告)日：2015-09-29

申请号：US13701449

申请日：2011-06-03

Applicant: Vidur Bhargava ,  Sriram Vishwanath ,  Jubin Jose

Inventor： Vidur Bhargava ,  Sriram Vishwanath ,  Jubin Jose

IPC: H04L12/28 ,  H04W88/04 ,  H04W72/08 ,  H04W74/08 ,  H04W48/20

CPC classification number: H04B7/15507 ,  H04B7/2606 ,  H04B17/345 ,  H04B17/373 ,  H04L5/0057 ,  H04W28/021 ,  H04W48/20 ,  H04W52/0209 ,  H04W52/245 ,  H04W52/343 ,  H04W52/46 ,  H04W72/085 ,  H04W74/0816 ,  H04W84/047 ,  H04W84/18 ,  H04W88/04 ,  Y02D70/1222 ,  Y02D70/1242 ,  Y02D70/1262 ,  Y02D70/142 ,  Y02D70/144 ,  Y02D70/146 ,  Y02D70/162 ,  Y02D70/164 ,  Y02D70/22 ,  Y02D70/449

Abstract: A method, wireless device and computer program product for expanding the coverage of a cellular network. A wireless device (e.g., cellular telephone) is able to communicate with a base station in a cell of the cellular network over a non-cellular interface via another wireless device in the cell through the use of multi-hopping. A wireless device may request permission to communicate with the base station over a non-cellular interface via hopping off another wireless device when its signal strength is below a threshold. Alternatively, a wireless device may receive a request to communicate with the base station over a non-cellular interface via hopping off the wireless device that sent the request when that wireless device has excess capacity in its bandwidth with the base station. By enabling wireless devices to communicate with a base station in such a manner, the effective coverage area of the cellular network is expanded and the effective capacity of the cellular network is improved.

Abstract translation: 一种用于扩展蜂窝网络覆盖范围的方法，无线设备和计算机程序产品。 无线设备（例如，蜂窝电话）能够通过使用多跳跃通过小区中的另一无线设备在非蜂窝接口上与蜂窝网络的小区中的基站进行通信。 当无线设备的信号强度低于阈值时，无线设备可以通过跳过另一无线设备来请求通过非蜂窝接口与基站通信的许可。 或者，当无线设备在与基站的带宽中具有过多容量时，无线设备可以通过跳过发送请求的无线设备来接收通过非蜂窝接口与基站通信的请求。 通过使得无线设备能够以这样的方式与基站通信，蜂窝网络的有效覆盖区域被扩展，并且提高了蜂窝网络的有效容量。

公开(公告)号：US08767765B2

公开(公告)日：2014-07-01

申请号：US13464857

申请日：2012-05-04

Applicant: Jubin Jose ,  Sundar Subramanian ,  Xinzhou Wu ,  Thomas Joseph Richardson

Inventor： Jubin Jose ,  Sundar Subramanian ,  Xinzhou Wu ,  Thomas Joseph Richardson

IPC: H04B7/212 ,  H04W74/08

CPC classification number: H04W74/08 ,  H04L1/0003 ,  H04L1/0007 ,  H04L1/0009 ,  H04L2001/0093 ,  H04W28/06 ,  H04W36/0088 ,  H04W72/02 ,  H04W84/12 ,  H04W92/18

Abstract: A wireless communications device operates in a system where communications resources may be used by multiple devices concurrently. A device, with an acquired set of recurring time intervals, selects, e.g., pseudo-randomly, an interval or intervals to be used as a combined data transmission and channel measurement time interval. The other time intervals in its set are to be used as data transmission time intervals. The combined use type interval facilitates the measurement of interference on the device's channel while still allowing the device to transmit some data during the interval. A combined use interval includes a first portion for data transmission and a second portion for channel measurement. In some embodiments, the first portion is fixed size and the second portion occurs at the very end of the interval. In some embodiments, the duration of the first portion is varied over time such that the channel measurement start time varies.

Abstract translation: 无线通信设备在可以由多个设备同时使用通信资源的系统中操作。 具有所获得的一组循环时间间隔的装置例如选择伪随机地选择要用作组合数据传输和信道测量时间间隔的间隔或间隔。 其集合中的其他时间间隔将用作数据传输时间间隔。 组合使用类型间隔有助于测量设备信道上的干扰，同时仍允许设备在间隔期间传输一些数据。 组合使用间隔包括用于数据传输的第一部分和用于信道测量的第二部分。 在一些实施例中，第一部分是固定尺寸，第二部分发生在间隔的最后端。 在一些实施例中，第一部分的持续时间随着时间而变化，使得信道测量开始时间变化。

公开(公告)号：US20130201857A1

公开(公告)日：2013-08-08

申请号：US13813349

申请日：2011-07-29

Applicant: Vidur Bhargava ,  Sriram Vishwanath ,  Jubin Jose

Inventor： Vidur Bhargava ,  Sriram Vishwanath ,  Jubin Jose

IPC: H04W72/08

CPC classification number: H04W72/085 ,  H04K3/222 ,  H04K3/28 ,  H04K3/45 ,  H04K2203/16 ,  H04K2203/18 ,  H04W16/14 ,  H04W28/22 ,  H04W72/02 ,  H04W72/0486 ,  H04W72/082 ,  H04W88/06

Abstract: A hybrid cellular and non-cellular multi-hop communication device, including a hand-held wireless device having one or more antennas, a cellular wireless interface connected to at least some of the one or more antennas, and a non-cellular wireless interface connected to at least some of the one or more antennas. The non-cellular wireless interface may include a rate allocator configured to select a physical-layer rate of transmission of data from the non-cellular wireless interface based on a queue length of data to be transmitted from the hand-held cellular device and a transmitter configured to wirelessly transmit data from the queue and adjust physical-layer transmission parameters based on a physical-layer rate selected by the rate allocator.

Abstract translation: 一种混合蜂窝和非蜂窝多跳通信设备，包括具有一个或多个天线的手持无线设备，连接到所述一个或多个天线中的至少一些天线的蜂窝无线接口以及连接的非蜂窝无线接口 到所述一个或多个天线中的至少一些天线。 非蜂窝无线接口可以包括速率分配器，其被配置为基于将要从手持蜂窝设备发送的数据的队列长度和发射机选择来自非蜂窝无线接口的数据传输的物理层速率 被配置为从队列无线地发送数据，并且基于由速率分配器选择的物理层速率来调整物理层传输参数。

公开(公告)号：US08140070B2

公开(公告)日：2012-03-20

申请号：US12320864

申请日：2009-02-06

Applicant: Alexei Ashikhmin ,  Jubin Jose ,  Thomas Marzetta

Inventor： Alexei Ashikhmin ,  Jubin Jose ,  Thomas Marzetta

IPC: H04W24/00

CPC classification number: H04B7/0617 ,  H04B7/0434

Abstract: Methods for suppressing inter-cell interference during data transmission using a preceding matrix are provided. Inter-cell interference is suppressed by precoding data (or information) signals for transmission from base station to mobile or vice versa. Methods according to example embodiments also increase intra-cell data transmission rates. The precoding matrix is generated based on estimated channel coefficients for propagation channels between a base station and mobiles inside and outside the base station's coverage area.

Abstract translation: 提供了使用前面的矩阵来抑制数据传输期间的小区间干扰的方法。 通过预编码数据（或信息）信号来抑制小区间干扰，用于从基站到移动的传输，反之亦然。 根据示例实施例的方法还增加小区内数据传输速率。 基于用于基站和基站覆盖区域内外的移动台之间的传播信道的估计信道系数来生成预编码矩阵。

公开(公告)号：US20100203912A1

公开(公告)日：2010-08-12

申请号：US12320864

申请日：2009-02-06

Applicant: Alexei Ashikhmin ,  Jubin Jose ,  Thomas Marzetta

Inventor： Alexei Ashikhmin ,  Jubin Jose ,  Thomas Marzetta

IPC: H04B7/00

CPC classification number: H04B7/0617 ,  H04B7/0434

Abstract: Methods for suppressing inter-cell interference during data transmission using a preceding matrix are provided. Inter-cell interference is suppressed by precoding data (or information) signals for transmission from base station to mobile or vice versa. Methods according to example embodiments also increase intra-cell data transmission rates. The precoding matrix is generated based on estimated channel coefficients for propagation channels between a base station and mobiles inside and outside the base station's coverage area.

Abstract translation: 提供了使用前面的矩阵来抑制数据传输期间的小区间干扰的方法。 通过预编码数据（或信息）信号来抑制小区间干扰，用于从基站到移动的传输，反之亦然。 根据示例实施例的方法还增加小区内数据传输速率。 基于用于基站和基站覆盖区域内外的移动台之间的传播信道的估计信道系数来生成预编码矩阵。

公开(公告)号：US07907552B2

公开(公告)日：2011-03-15

申请号：US12195087

申请日：2008-08-20

Applicant: Alexei E. Ashikhmin ,  Jubin Jose ,  Philip Alfred Whiting

Inventor： Alexei E. Ashikhmin ,  Jubin Jose ,  Philip Alfred Whiting

IPC: H04J3/00

CPC classification number: H04B7/0452 ,  H04B7/0434 ,  H04B7/0626

Abstract: A multiple-input, multiple-output (MIMO) communication system is configured to perform user scheduling and associated precoding. The system includes multiple terminals and at least one base station configured to communicate with the terminals. The base station is operative to obtain channel vectors for respective ones of the terminals, to select a subset of the terminals based on magnitudes of the respective channel vectors, to compute a precoding matrix using the channel vectors of the selected subset of terminals, and to utilize the preceding matrix to control transmission to the selected subset of terminals. The system may be, for example, a time-division duplex (TDD) multi-user MIMO system in which the multiple terminals comprise autonomous single-antenna terminals.

Abstract translation: 多输入多输出（MIMO）通信系统被配置为执行用户调度和相关联的预编码。 该系统包括多个终端和被配置为与终端进行通信的至少一个基站。 基站可操作以获得各个终端的信道向量，基于各个信道向量的大小来选择终端的子集，以使用所选择的终端子集的信道向量来计算预编码矩阵，并且 利用前面的矩阵来控制到所选择的终端子集的传输。 该系统可以是例如其中多个终端包括自主单天线终端的时分双工（TDD）多用户MIMO系统。

公开(公告)号：US09794949B2

公开(公告)日：2017-10-17

申请号：US13813349

申请日：2011-07-29

Applicant: Vidur Bhargava ,  Sriram Vishwanath ,  Jubin Jose

Inventor： Vidur Bhargava ,  Sriram Vishwanath ,  Jubin Jose

IPC: H04L12/26 ,  H04W72/08 ,  H04K3/00 ,  H04W28/22 ,  H04W72/02 ,  H04W16/14 ,  H04W72/04 ,  H04W88/06

CPC classification number: H04W72/085 ,  H04K3/222 ,  H04K3/28 ,  H04K3/45 ,  H04K2203/16 ,  H04K2203/18 ,  H04W16/14 ,  H04W28/22 ,  H04W72/02 ,  H04W72/0486 ,  H04W72/082 ,  H04W88/06

Abstract: A hybrid cellular and non-cellular multi-hop communication device, including a hand-held wireless device having one or more antennas, a cellular wireless interface connected to at least some of the one or more antennas, and a non-cellular wireless interface connected to at least some of the one or more antennas. The non-cellular wireless interface may include a rate allocator configured to select a physical-layer rate of transmission of data from the non-cellular wireless interface based on a queue length of data to be transmitted from the hand-held cellular device and a transmitter configured to wirelessly transmit data from the queue and adjust physical-layer transmission parameters based on a physical-layer rate selected by the rate allocator.

公开(公告)号：US08891391B2

公开(公告)日：2014-11-18

申请号：US13459058

申请日：2012-04-27

Applicant: Narayan Prasad ,  Honghai Zhang ,  Luca Venturino ,  Jubin Jose ,  Sampath Rangarajan

Inventor： Narayan Prasad ,  Honghai Zhang ,  Luca Venturino ,  Jubin Jose ,  Sampath Rangarajan

IPC: H04W72/00 ,  H04L5/00 ,  H04L12/24 ,  H04W72/04 ,  H04W28/04 ,  H04W72/08

CPC classification number: H04W72/0446 ,  H04L5/0035 ,  H04L5/0073 ,  H04W28/04 ,  H04W72/082

Abstract: A method to allocate resources in a wireless MIMO system, by enforcing per-cell orthogonality to avoid intra-cell interference; and allocating resources based on interference handling.

Abstract translation: 一种在无线MIMO系统中分配资源的方法，通过实施每小区正交性以避免小区内干扰; 并基于干扰处理分配资源。

公开(公告)号：US20130083722A1

公开(公告)日：2013-04-04

申请号：US13701449

申请日：2011-06-03

Applicant: Vidur Bhargava ,  Sriram Vishwanath ,  Jubin Jose

Inventor： Vidur Bhargava ,  Sriram Vishwanath ,  Jubin Jose

IPC: H04W88/04

CPC classification number: H04B7/15507 ,  H04B7/2606 ,  H04B17/345 ,  H04B17/373 ,  H04L5/0057 ,  H04W28/021 ,  H04W48/20 ,  H04W52/0209 ,  H04W52/245 ,  H04W52/343 ,  H04W52/46 ,  H04W72/085 ,  H04W74/0816 ,  H04W84/047 ,  H04W84/18 ,  H04W88/04 ,  Y02D70/1222 ,  Y02D70/1242 ,  Y02D70/1262 ,  Y02D70/142 ,  Y02D70/144 ,  Y02D70/146 ,  Y02D70/162 ,  Y02D70/164 ,  Y02D70/22 ,  Y02D70/449

Abstract: A method, wireless device and computer program product for expanding the coverage of a cellular network. A wireless device (e.g., cellular telephone) is able to communicate with a base station in a cell of the cellular network over a non-cellular interface via another wireless device in the cell through the use of multi-hopping. A wireless device may request permission to communicate with the base station over a non-cellular interface via hopping off another wireless device when its signal strength is below a threshold. Alternatively, a wireless device may receive a request to communicate with the base station over a non-cellular interface via hopping off the wireless device that sent the request when that wireless device has excess capacity in its bandwidth with the base station. By enabling wireless devices to communicate with a base station in such a manner, the effective coverage area of the cellular network is expanded and the effective capacity of the cellular network is improved.

Abstract translation: 一种用于扩展蜂窝网络覆盖范围的方法，无线设备和计算机程序产品。 无线设备（例如，蜂窝电话）能够通过使用多跳跃通过小区中的另一无线设备在非蜂窝接口上与蜂窝网络的小区中的基站进行通信。 当无线设备的信号强度低于阈值时，无线设备可以通过跳过另一无线设备来请求通过非蜂窝接口与基站通信的许可。 或者，当无线设备在与基站的带宽中具有过多容量时，无线设备可以通过跳过发送请求的无线设备来接收通过非蜂窝接口与基站通信的请求。 通过使得无线设备能够以这样的方式与基站通信，蜂窝网络的有效覆盖区域被扩展，并且提高了蜂窝网络的有效容量。