公开(公告)号：US20070280146A1

公开(公告)日：2007-12-06

申请号：US11442853

申请日：2006-05-30

申请人： Shirish Nagaraj ,  Henry Hui Ye

发明人： Shirish Nagaraj ,  Henry Hui Ye

IPC分类号： H04B7/185

CPC分类号： H04W52/223 ,  H04W72/1231

摘要： There is provided a system and method for estimating uplink signal power. More specifically, in one embodiment, there is provided a method comprising receiving a packet transmitted over an air interface, computing a probability that the packet has a same actual power offset as a previously decoded packet based on one or more previously received packets, and calculating a signal power estimate based on the transition probability

摘要翻译： 提供了一种用于估计上行链路信号功率的系统和方法。 更具体地，在一个实施例中，提供了一种方法，包括：接收通过空中接口发送的分组，基于一个或多个先前接收的分组计算分组具有与先前解码的分组相同的实际功率偏移的概率，并计算 基于转移概率的信号功率估计

公开(公告)号：US20130225144A1

公开(公告)日：2013-08-29

申请号：US13404452

申请日：2012-02-24

申请人： Phil Fleming ,  Shirish Nagaraj ,  Raghavendra M. Ramakrishna ,  Michael Honig

发明人： Phil Fleming ,  Shirish Nagaraj ,  Raghavendra M. Ramakrishna ,  Michael Honig

IPC分类号： H04B15/00

CPC分类号： H04J11/0053 ,  H04J11/0056 ,  H04J2211/001

摘要： Systems and techniques for managing interference between pico cells in a pico cluster. Pico eNodeBs are configured in groups for each of a plurality of UEs, based on factors such as signal to noise ratio and geographic location. All signals from UEs may be measured by all eNodeBs in the cluster, but a pico group decodes packets only of UEs associated with the pico group. Decoded packets are exchanged between pico groups, and when a pico group is unable to decode packets of an associated UE, is uses the decoded packets received in exchanges to reconstruct an interference signal. The interference signal is subtracted from the received signal and the resulting received signal is used to decode the packets of the UE.

摘要翻译： 用于管理微微群集中微微小区之间的干扰的系统和技术。 基于诸如信噪比和地理位置的因素，为多个UE中的每一个配置Pico eNodeB。 来自UE的所有信号可以由集群中的所有eNodeB测量，但是微微组仅解码与微微组相关联的UE的分组。 解密的分组在微微组之间交换，并且当微微组不能解码相关联的UE的分组时，使用在交换机中接收的解码分组来重构干扰信号。 从接收到的信号中减去干扰信号，并将所得到的接收信号用于解码UE的分组。

公开(公告)号：US07684512B2

公开(公告)日：2010-03-23

申请号：US11408019

申请日：2006-04-21

申请人： Shirish Nagaraj

发明人： Shirish Nagaraj

IPC分类号： H04L27/00

CPC分类号： H04L5/023 ,  H04L27/261

摘要： In an example method of scheduling mobile users, mobile users are assigned to one of at least a first layer and a second layer, where each of the first and second layers are associated with a same frequency band. The mobile users are further assigned, in the first layer, to different frequency sub-bands in the frequency band such that the users in the first layer have non-overlapping first sub-band assignments. The mobile users are further assigned, in the second layer, to different frequency sub-bands in the frequency band such that the users in the second layer have non-overlapping second sub-band assignments. The mobile users are then scheduled for transmission based on the first and second layer and the first and second sub-band assignments. In a further example decoding method, layer transmissions are decoded in succession with interference cancellation performed between each layer decoding step. In a second example decoding method, mobile users in multiple layers and within assigned channels are jointly decoded.

摘要翻译： 在调度移动用户的示例性方法中，移动用户被分配到至少第一层和第二层中的一个，其中第一层和第二层中的每一层与相同的频带相关联。 移动用户在第一层中被进一步分配到频带中的不同频率子带，使得第一层中的用户具有不重叠的第一子带分配。 移动用户在第二层中被进一步分配到频带中的不同频率子带，使得第二层中的用户具有非重叠的第二子带分配。 然后，基于第一和第二层以及第一和第二子带分配来调度移动用户的传输。 在另一示例性解码方法中，层间传输被连续地解码，每个层解码步骤之间执行干扰消除。 在第二示例解码方法中，多层和分配频道内的移动用户被联合解码。

公开(公告)号：US07486954B2

公开(公告)日：2009-02-03

申请号：US11089339

申请日：2005-03-25

申请人： Jung Ah Lee ,  Shirish Nagaraj ,  Anil M. Rao

发明人： Jung Ah Lee ,  Shirish Nagaraj ,  Anil M. Rao

IPC分类号： H04Q7/20

CPC分类号： H04W36/22 ,  H04W28/22 ,  H04W52/365

摘要： In the method, rate control for at least one soft handoff user is selectively performed based on a soft handoff loading metric indicative of loading from soft handoff users on the channel.

摘要翻译： 在该方法中，基于指示来自软切换用户在信道上的加载的软切换加载度量来选择性地执行至少一个软越区切换用户的速率控制。

公开(公告)号：US20070195734A1

公开(公告)日：2007-08-23

申请号：US11356242

申请日：2006-02-17

申请人： Suman Das ,  Shirish Nagaraj ,  Harish Viswanathan

发明人： Suman Das ,  Shirish Nagaraj ,  Harish Viswanathan

IPC分类号： H04J11/00 ,  H04B7/216 ,  H04B7/00

CPC分类号： H04W52/243 ,  H04L5/0016 ,  H04L5/0048 ,  H04L27/0008 ,  H04W52/146 ,  H04W52/16 ,  H04W52/24 ,  H04W52/247 ,  H04W52/36 ,  H04W52/362 ,  H04W52/367

摘要： Methods of reverse link power control are provided. A first example method includes first measuring a first type of interference, second measuring a second type of interference, determining a ratio between the first and second measurements and broadcasting the determined ratio to a plurality of mobile units. A second example method includes receiving a broadcasted ratio indicating a ratio between two different types of interference and calculating a power level for reverse link transmissions based on the received broadcasted ratio. A third example method includes first adjusting OFDMA transmission power based on first feedback signals during an OFDMA transmission and second adjusting OFDMA transmission power based on second feedback signals during periods between OFDMA transmissions. A fourth example method includes receiving a plurality of interference indicating signals from different base stations and determining whether to adjust a maximum transmit power threshold based on the plurality of interference indicating signals, the maximum transmit power threshold indicating the maximum permitted transmission power level below which transmissions are constrained.

摘要翻译： 提供了反向链路功率控制的方法。 第一示例性方法包括：首先测量第一类型的干扰，第二测量第二类型的干扰，确定第一和第二测量之间的比率，并将确定的比率广播到多个移动单元。 第二示例性方法包括接收指示两种不同类型的干扰之间的比率的广播比率，并且基于所接收的广播比率来计算用于反向链路传输的功率电平。 第三示例性方法包括：在OFDMA传输期间，基于第一反馈信号，在OFDMA传输期间，基于第二反馈信号，第二调整OFDMA传输功率，来调整OFDMA传输功率。 第四示例性方法包括从不同的基站接收多个干扰指示信号，并且基于多个干扰指示信号确定是否调整最大发射功率阈值，所述最大发射功率阈值指示最大允许发射功率电平， 受到约束

公开(公告)号：US20050265249A1

公开(公告)日：2005-12-01

申请号：US10853102

申请日：2004-05-26

申请人： Shirish Nagaraj

发明人： Shirish Nagaraj

IPC分类号： G01R31/08

CPC分类号： H04B1/707

摘要： In a method of detecting signaling information in a signal received in a wireless communication system, signaling information for a signal received in a subsequent time instant may be detected using an estimated value for the subsequent time instant. The estimated value for the subsequent time instant may be determined based on one or more measured parameters related to an estimated value for detecting signaling information in a current time instant.

摘要翻译： 在检测在无线通信系统中接收的信号中的信令信息的方法中，可以使用随后的时刻的估计值来检测在随后的时刻接收到的信号的信令信息。 可以基于与当前时刻的用于检测信令信息的估计值相关的一个或多个测量参数来确定随后时间的估计值。

公开(公告)号：US20150282171A1

公开(公告)日：2015-10-01

申请号：US14430699

申请日：2012-09-24

申请人： Shirish NAGARAJ ,  Xiaoyong YU ,  NOKIA SIEMENS NETWORKS OY

发明人： Xiaoyong Yu ,  Shirish Nagaraj

IPC分类号： H04W72/04 ,  H04L5/00 ,  H04L25/02 ,  H04L27/26 ,  H04L25/03

CPC分类号： H04W72/0453 ,  H04B7/0857 ,  H04L5/0005 ,  H04L5/0035 ,  H04L25/0204 ,  H04L25/0206 ,  H04L25/0212 ,  H04L25/022 ,  H04L25/0224 ,  H04L25/03159 ,  H04L27/0014 ,  H04L27/2657 ,  H04L27/266 ,  H04L2027/0067

摘要： A method includes, for a selected user equipment for signals corresponding in part to the selected user equipment and received by antennas from a number of cells, wherein each cell has one or more antennas, and wherein each signal is from an individual one of the antennas, performing the following: estimating carrier frequency offset for each cell using one or more of the signals from the cell; performing frequency offset correction on each signal from each cell by using at least the estimated carrier frequency offset for an associated cell; estimating a channel for each frequency offset corrected signal; and combining, using the estimated channels, each of the frequency offset corrected signals to generate one or more estimates of one or more symbols transmitted from the selected user equipment. A second frequency offset correction may be performed subsequent to the combining. Apparatus, computer programs, and software are also disclosed.

摘要翻译： 一种方法包括：对于所选择的用户设备，对于部分与所选用户设备相对应并且由多个小区的天线接收的信号，其中每个小区具有一个或多个天线，并且其中每个信号来自所述天线中的单个天线 执行以下操作：使用来自该小区的一个或多个信号来估计每个小区的载波频率偏移; 通过至少使用相关联的小区的估计的载波频率偏移来对来自每个小区的每个信号执行频率偏移校正; 估计每个频偏补偿信号的信道; 以及使用估计的信道组合每个频偏校正信号以产生从所选择的用户设备发送的一个或多个符号的一个或多个估计。 可以在组合之后执行第二频率偏移校正。 还公开了装置，计算机程序和软件。

公开(公告)号：US08712460B2

公开(公告)日：2014-04-29

申请号：US11355977

申请日：2006-02-17

申请人： Suman Das ,  Shirish Nagaraj ,  Harish Viswanathan

发明人： Suman Das ,  Shirish Nagaraj ,  Harish Viswanathan

IPC分类号： H04B7/00

CPC分类号： H04W52/243 ,  H04W52/146 ,  H04W52/241 ,  H04W52/247

摘要： Methods of reverse link power control are provided. In a first example reverse link power control process, a signal-to-interference+noise (SINR) is measured for a plurality of mobile stations. A power control adjustment is determined for each of the mobile stations based on the measured SINR for the mobile station and a fixed target SINR, the fixed target SINR being used in the determining step for each mobile station and sending the power control adjustments to the mobile stations. In a second example reverse link power control process, one or more signals are transmitted to a base station. A power control adjustment indicator indicating an adjustment to a transmission power level is received. The received power control adjustment is determined based on a measured signal-to-interference+noise ratio (SINR) for the one or more transmitted signals and a fixed target SINR threshold, the fixed target SINR threshold being used for power control adjustment of a plurality of mobile stations.

摘要翻译： 提供了反向链路功率控制的方法。 在第一示例性的反向链路功率控制过程中，针对多个移动站测量信号与干扰+噪声（SINR）。 基于移动站的测量SINR和固定目标SINR确定每个移动站的功率控制调整，在每个移动台的确定步骤中使用固定目标SINR，并将功率控制调整发送到移动台 车站。 在第二示例性的反向链路功率控制过程中，一个或多个信号被发送到基站。 接收指示对发送功率电平的调整的功率控制调整指示符。 所接收的功率控制调整基于用于一个或多个发送信号的测量信号与干扰+噪声比（SINR）和固定目标SINR阈值来确定，固定目标SINR阈值用于多个功率控制调整 的移动台。

公开(公告)号：US08700042B2

公开(公告)日：2014-04-15

申请号：US11409162

申请日：2006-04-21

申请人： Shirish Nagaraj ,  Subramanian Vasudevan

发明人： Shirish Nagaraj ,  Subramanian Vasudevan

IPC分类号： H04W36/30

CPC分类号： H04B15/00 ,  H04B1/71072 ,  H04B2201/70702 ,  H04J11/004 ,  H04J11/005 ,  H04W24/02

摘要： Successfully decoded data received from a mobile terminal as well as the transmission format of that data is relayed over the backhaul from a base station receiver that successfully decoded the mobile terminal's transmission to the base stations in the mobile terminal's active set that presumably were unable to decode the mobile terminal's transmission due to inadequate signal-to-noise ratio. A base station that receives this transmission from the relaying base station that did'successfully decode and demodulate the mobile terminal's transmission is then able to reconstruct the data and subtract it from the total interference, thereby increasing the signal-to-noise ratio at this base station for its in-cell processing.

摘要翻译： 从移动终端接收的成功解码的数据以及该数据的传输格式通过来自基站接收机的回程被中继，所述基站接收机将移动终端的传输成功地解码为移动终端的活动集中的基本无法解码的基站 由于信噪比不足，移动终端的传输。 接收来自已经成功解码和解调移动终端的传输的中继基站的这种传输的基站然后能够重建数据并从总干扰中减去数据，从而增加该基站的信噪比 车站用于其小区内处理。

公开(公告)号：US20080159237A1

公开(公告)日：2008-07-03

申请号：US11645606

申请日：2006-12-27

申请人： Francis Dominique ,  Shirish Nagaraj ,  Hongwei Kong ,  Walid Elias Nabhane

发明人： Francis Dominique ,  Shirish Nagaraj ,  Hongwei Kong ,  Walid Elias Nabhane

IPC分类号： H04B7/216

CPC分类号： H04W52/44 ,  H04W52/0229 ,  H04W52/325 ,  H04W76/20 ,  H04W76/28 ,  Y02D70/1242 ,  Y02D70/23 ,  Y02D70/25

摘要： Whether a receiver supports blind data channel detection is determined, and transmission of control channel information associated with a data channel is disabled if the determining step determines the receiver is capable of detecting the data channel without the use of control channel information. Data is transmitted to the receiver on the data channel without the control channel information after disabling of the transmission of the control channel information.

摘要翻译： 如果确定步骤确定接收机能够在不使用控制信道信息的情况下检测数据信道，则确定接收机是否支持盲目数据信道检测，并且与数据信道相关联的控制信道信息的传输被禁用。 在禁止发送控制信道信息之后，将数据发送到数据信道上的接收机，而无需控制信道信息。