公开(公告)号：US20120327888A1

公开(公告)日：2012-12-27

申请号：US13596961

申请日：2012-08-28

申请人： Hari Sankar ,  Srikanth Gummadi

发明人： Hari Sankar ,  Srikanth Gummadi

IPC分类号： H04W72/04

CPC分类号： H04L5/0053 ,  H04L5/023 ,  H04W72/121 ,  H04W72/1289

摘要： Methods and apparatuses for reducing the overhead associated with transmitting MAPs are provided by grouping client stations in different constellations into one of two or more groups/allocations based partially upon their respective channel conditions. As a result of grouping, client stations within each group/allocation share a single resource allocation and in addition, the different groups of client stations can be scheduled such that variable modulation repeat-coding schemes can be implemented for map transmissions to each group, thereby reducing the repetition rates and overhead associated with map transmissions.

摘要翻译： 通过部分地基于它们各自的信道条件将不同星座中的客户站分组成两个或多个组/分配中的一个来提供用于减少与发送MAP相关联的开销的方法和装置。 作为分组的结果，每个组/分配中的客户端站共享单个资源分配，此外，可以调度不同的客户端组，使得可以实现可变调制重复编码方案用于到每个组的映射传输，从而 减少与地图传输相关的重复率和开销。

公开(公告)号：US20090264142A1

公开(公告)日：2009-10-22

申请号：US12327732

申请日：2008-12-03

申请人： Hari Sankar ,  Ron Porat ,  Danjie Pan ,  Wee Peng Goh ,  Srikanth Gummadi ,  Lei Wang

发明人： Hari Sankar ,  Ron Porat ,  Danjie Pan ,  Wee Peng Goh ,  Srikanth Gummadi ,  Lei Wang

IPC分类号： H04B7/00 ,  H04W72/00 ,  H04L27/28

CPC分类号： H04L5/0032 ,  H04L1/0026 ,  H04L5/0007 ,  H04L5/0037 ,  H04L5/0057 ,  H04L5/0062 ,  H04L5/0066 ,  H04L25/0204 ,  H04W72/0406 ,  H04W72/0453 ,  H04W72/048 ,  H04W72/082

摘要： Methods and apparatus are described for mitigating intercell interference in wireless communication systems utilizing substantially the same operating frequency band across multiple neighboring coverage areas. The operating frequency band may be shared across multiple neighboring or otherwise adjacent cells, such as in a frequency reuse one configuration. The wireless communication system can synchronize one or more resource allocation regions or zones across the multiple base stations, and can coordinate a permutation type within each resource allocation zone. The base stations can coordinate a pilot configuration in each of a plurality of coordinated resource allocation regions. Subscriber stations can be assigned resources in a coordinated resource allocation region based on interference levels. A subscriber station can determine a channel estimate for each of multiple base stations in the coordinated resource allocation region to mitigate interference.

摘要翻译： 描述了用于减轻跨越多个相邻覆盖区域的基本上相同的工作频带的无线通信系统中的小区间干扰的方法和装置。 操作频带可以在多个相邻或相邻的小区之间共享，例如在频率重用一个配置中。 无线通信系统可以跨多个基站同步一个或多个资源分配区域或区域，并且可以协调每个资源分配区域内的置换类型。 基站可以协调多个协调资源分配区域中的每一个中的导频配置。 可以基于干扰级别在协调的资源分配区域中为用户站分配资源。 订户站可以确定协调资源分配区域中的多个基站中的每个基站的信道估计以减轻干扰。

公开(公告)号：US20090257406A1

公开(公告)日：2009-10-15

申请号：US12100339

申请日：2008-04-09

申请人： Hari Sankar ,  Srikanth Gummadi

发明人： Hari Sankar ,  Srikanth Gummadi

IPC分类号： H04J3/00 ,  H04L27/00

CPC分类号： H04L5/0053 ,  H04L5/023 ,  H04W72/121 ,  H04W72/1289

摘要： Methods and apparatuses for reducing the overhead associated with transmitting MAPs are provided by grouping client stations in different constellations into one of two or more groups/allocations based partially upon their respective channel conditions. As a result of grouping, client stations within each group/allocation share a single resource allocation and in addition, the different groups of client stations can be scheduled such that variable modulation repeat-coding schemes can be implemented for map transmissions to each group, thereby reducing the repetition rates and overhead associated with map transmissions.

摘要翻译： 通过部分地基于它们各自的信道条件将不同星座中的客户站分组成两个或多个组/分配中的一个来提供用于减少与发送MAP相关联的开销的方法和装置。 作为分组的结果，每个组/分配中的客户端站共享单个资源分配，此外，可以调度不同的客户端组，使得可以实现可变调制重复编码方案用于到每个组的映射传输，从而 减少与地图传输相关的重复率和开销。

公开(公告)号：US08626072B2

公开(公告)日：2014-01-07

申请号：US13472040

申请日：2012-05-15

申请人： Hari Sankar ,  Ron Porat ,  Danjie Pan ,  Wee Peng Goh ,  Srikanth Gummadi ,  Lei Wang

发明人： Hari Sankar ,  Ron Porat ,  Danjie Pan ,  Wee Peng Goh ,  Srikanth Gummadi ,  Lei Wang

IPC分类号： H04B1/00

CPC分类号： H04L5/0032 ,  H04L1/0026 ,  H04L5/0007 ,  H04L5/0037 ,  H04L5/0057 ,  H04L5/0062 ,  H04L5/0066 ,  H04L25/0204 ,  H04W72/0406 ,  H04W72/0453 ,  H04W72/048 ,  H04W72/082

摘要： Methods and apparatus are described for mitigating intercell interference in wireless communication systems utilizing substantially the same operating frequency band across multiple neighboring coverage areas. The operating frequency band may be shared across multiple neighboring or otherwise adjacent cells, such as in a frequency reuse one configuration. The wireless communication system can synchronize one or more resource allocation regions or zones across the multiple base stations, and can coordinate a permutation type within each resource allocation zone. The base stations can coordinate a pilot configuration in each of a plurality of coordinated resource allocation regions. Subscriber stations can be assigned resources in a coordinated resource allocation region based on interference levels. A subscriber station can determine a channel estimate for each of multiple base stations in the coordinated resource allocation region to mitigate interference.

摘要翻译： 描述了用于减轻跨越多个相邻覆盖区域的基本上相同的工作频带的无线通信系统中的小区间干扰的方法和装置。 操作频带可以在多个相邻或相邻的小区之间共享，例如在频率重用一个配置中。 无线通信系统可以跨多个基站同步一个或多个资源分配区域或区域，并且可以协调每个资源分配区域内的置换类型。 基站可以协调多个协调资源分配区域中的每一个中的导频配置。 可以基于干扰级别在协调的资源分配区域中为用户站分配资源。 订户站可以确定协调资源分配区域中的多个基站中的每个基站的信道估计以减轻干扰。

公开(公告)号：US08724580B2

公开(公告)日：2014-05-13

申请号：US13596961

申请日：2012-08-28

申请人： Hari Sankar ,  Srikanth Gummadi

发明人： Hari Sankar ,  Srikanth Gummadi

IPC分类号： H04W4/00

CPC分类号： H04L5/0053 ,  H04L5/023 ,  H04W72/121 ,  H04W72/1289

摘要： Methods and apparatuses for reducing the overhead associated with transmitting MAPs are provided by grouping client stations in different constellations into one of two or more groups/allocations based partially upon their respective channel conditions. As a result of grouping, client stations within each group/allocation share a single resource allocation and in addition, the different groups of client stations can be scheduled such that variable modulation repeat-coding schemes can be implemented for map transmissions to each group, thereby reducing the repetition rates and overhead associated with map transmissions.

摘要翻译： 通过部分地基于它们各自的信道条件将不同星座中的客户站分组成两个或多个组/分配中的一个来提供用于减少与发送MAP相关联的开销的方法和装置。 作为分组的结果，每个组/分配中的客户端站共享单个资源分配，此外，可以调度不同的客户端组，使得可以实现可变调制重复编码方案用于到每个组的映射传输，从而 减少与地图传输相关的重复率和开销。

公开(公告)号：US08270352B2

公开(公告)日：2012-09-18

申请号：US12100339

申请日：2008-04-09

申请人： Hari Sankar ,  Srikanth Gummadi

发明人： Hari Sankar ,  Srikanth Gummadi

IPC分类号： H04W4/00

CPC分类号： H04L5/0053 ,  H04L5/023 ,  H04W72/121 ,  H04W72/1289

摘要： Methods and apparatuses for reducing the overhead associated with transmitting MAPs are provided by grouping client stations in different constellations into one of two or more groups/allocations based partially upon their respective channel conditions. As a result of grouping, client stations within each group/allocation share a single resource allocation and in addition, the different groups of client stations can be scheduled such that variable modulation repeat-coding schemes can be implemented for map transmissions to each group, thereby reducing the repetition rates and overhead associated with map transmissions.

摘要翻译： 通过部分地基于它们各自的信道条件将不同星座中的客户站分组成两个或多个组/分配中的一个来提供用于减少与发送MAP相关联的开销的方法和装置。 作为分组的结果，每个组/分配中的客户端站共享单个资源分配，此外，可以调度不同的客户端组，使得可以实现可变调制重复编码方案用于到每个组的映射传输，从而 减少与地图传输相关的重复率和开销。

公开(公告)号：US08204442B2

公开(公告)日：2012-06-19

申请号：US12327732

申请日：2008-12-03

申请人： Hari Sankar ,  Ron Porat ,  Danjie Pan ,  Wee Peng Goh ,  Srikanth Gummadi ,  Lei Wang

发明人： Hari Sankar ,  Ron Porat ,  Danjie Pan ,  Wee Peng Goh ,  Srikanth Gummadi ,  Lei Wang

IPC分类号： H04B1/00

CPC分类号： H04L5/0032 ,  H04L1/0026 ,  H04L5/0007 ,  H04L5/0037 ,  H04L5/0057 ,  H04L5/0062 ,  H04L5/0066 ,  H04L25/0204 ,  H04W72/0406 ,  H04W72/0453 ,  H04W72/048 ,  H04W72/082

摘要： Methods and apparatus are described for mitigating intercell interference in wireless communication systems utilizing substantially the same operating frequency band across multiple neighboring coverage areas. The operating frequency band may be shared across multiple neighboring or otherwise adjacent cells, such as in a frequency reuse one configuration. The wireless communication system can synchronize one or more resource allocation regions or zones across the multiple base stations, and can coordinate a permutation type within each resource allocation zone. The base stations can coordinate a pilot configuration in each of a plurality of coordinated resource allocation regions. Subscriber stations can be assigned resources in a coordinated resource allocation region based on interference levels. A subscriber station can determine a channel estimate for each of multiple base stations in the coordinated resource allocation region to mitigate interference.

摘要翻译： 描述了用于减轻跨越多个相邻覆盖区域的基本上相同的工作频带的无线通信系统中的小区间干扰的方法和装置。 操作频带可以在多个相邻或相邻的小区之间共享，例如在频率重用一个配置中。 无线通信系统可以跨多个基站同步一个或多个资源分配区域或区域，并且可以协调每个资源分配区域内的置换类型。 基站可以协调多个协调资源分配区域中的每一个中的导频配置。 可以基于干扰级别在协调的资源分配区域中为用户站分配资源。 订户站可以确定协调资源分配区域中的多个基站中的每个基站的信道估计以减轻干扰。

公开(公告)号：US20120069753A1

公开(公告)日：2012-03-22

申请号：US13175279

申请日：2011-07-01

申请人： Hari Sankar ,  Wenjun Li ,  Farrokh Abrishamkar ,  Srikanth Gummadi

发明人： Hari Sankar ,  Wenjun Li ,  Farrokh Abrishamkar ,  Srikanth Gummadi

IPC分类号： H04W24/00

CPC分类号： H04L25/0218 ,  H04L25/0228 ,  H04L25/024

摘要： Channel estimation at a user equipment includes estimating channel quality of at least one channel. A first algorithm or a second algorithm is selected based on the estimated channel quality. Channel estimation is performed based on the selected algorithm. The first algorithm may be a midamble multiplication-based algorithm. The second algorithm may be a midamble division algorithm. Channel estimation may also include estimating noise of a channel and adaptively setting a threshold based on the estimated noise to refine the channel estimation. The estimating channel quality, selecting of a first or second algorithm and channel estimation may be performed iteratively for contributing signals on a channel. An adaptive threshold may be modified across iterations. The channel estimation may also include determining a delay profile of a channel to refine the channel estimation.

摘要翻译： 在用户设备处的信道估计包括估计至少一个信道的信道质量。 基于估计的信道质量来选择第一算法或第二算法。 基于选择的算法执行信道估计。 第一种算法可以是基于midamble乘法的算法。 第二种算法可以是中间码分割算法。 信道估计还可以包括估计信道的噪声并且基于所估计的噪声自适应地设置阈值以改善信道估计。 可以迭代地执行估计信道质量，第一或第二算法的选择和信道估计，以在信道上提供信号。 可以跨迭代修改自适应阈值。 信道估计还可以包括确定信道的延迟分布以细化信道估计。

公开(公告)号：US20210359741A1

公开(公告)日：2021-11-18

申请号：US16625591

申请日：2018-06-20

申请人： Juan MONTOJO ,  Alexei Yurievitch GOROKHOV ,  Peter GAAL ,  Yu ZHANG ,  Joseph Binamira SORIAGA ,  Tingfang JI ,  Hari SANKAR ,  Alexandros MANOLAKOS ,  Qualcomm Incorporated

发明人： Juan Montojo ,  Alexei Yurievitch Gorokhov ,  Peter Gaal ,  Yu Zhang ,  Joseph Binamira Soriaga ,  Tingfang Ji ,  Hari Sankar ,  Alexandros Manolakos

IPC分类号： H04B7/06 ,  H04B7/0413

摘要： Techniques are discussed herein identify transmission strategies and to communicate those identified transmission strategies in a transparent communication environment. In some examples, a user equipment (UE) may identify a new transmission strategy for a downlink channel different from a current transmission strategy for the down link channel. The UE may transmit a channel state information (CSI) message that includes an indication of the new transmission strategy identified by the UE. In some examples, a base station may identify the new transmission strategy for the downlink channel. The base station may transmit a codebook subset restriction (CSR) indicator that includes an indication of the new transmission strategy identified by the base station. In some examples, the UE may modify its feedback strategy based on the new transmission strategy.

公开(公告)号：US08629803B2

公开(公告)日：2014-01-14

申请号：US13412487

申请日：2012-03-05

申请人： Ganesh Pattabiraman ,  Subramanian Meiyappan ,  Arun Raghupathy ,  Hari Sankar

发明人： Ganesh Pattabiraman ,  Subramanian Meiyappan ,  Arun Raghupathy ,  Hari Sankar

IPC分类号： G01S19/46

CPC分类号： H04B1/7087 ,  G01S1/08 ,  G01S5/10 ,  G01S19/11 ,  G01S19/24 ,  G01S19/42 ,  G01S19/46 ,  H04B1/709 ,  H04B7/2618 ,  H04B2201/7073 ,  H04W4/02 ,  H04W56/005 ,  H04W72/005 ,  H04W72/0446 ,  H04W72/048

摘要： Systems and methods are described for determining position of a receiver. The positioning system comprises a transmitter network including transmitters that broadcast positioning signals. The positioning system comprises a remote receiver that acquires and tracks the positioning signals and/or satellite signals. The satellite signals are signals of a satellite-based positioning system. A first mode of the remote receiver uses terminal-based positioning in which the remote receiver computes a position using the positioning signals and/or the satellite signals. The positioning system comprises a server coupled to the remote receiver. A second operating mode of the remote receiver comprises network-based positioning in which the server computes a position of the remote receiver from the positioning signals and/or satellite signals, where the remote receiver receives and transfers to the server the positioning signals and/or satellite signals.

摘要翻译： 描述了用于确定接收机的位置的系统和方法。 定位系统包括发射机网络，其包括广播定位信号的发射机。 该定位系统包括一个远程接收器，用于获取和跟踪定位信号和/或卫星信号。 卫星信号是基于卫星定位系统的信号。 远程接收机的第一模式使用基于终端的定位，其中远程接收机使用定位信号和/或卫星信号来计算位置。 定位系统包括耦合到远程接收器的服务器。 远程接收机的第二操作模式包括基于网络的定位，其中服务器根据定位信号和/或卫星信号计算远程接收器的位置，其中远程接收器接收并向服务器传送定位信号和/或 卫星信号。