公开(公告)号：US20080298524A1

公开(公告)日：2008-12-04

申请号：US11757731

申请日：2007-06-04

申请人： Havish Koorapaty ,  Rajaram Ramesh ,  Kumar Balachandran

发明人： Havish Koorapaty ,  Rajaram Ramesh ,  Kumar Balachandran

IPC分类号： H04B1/10

CPC分类号： H04L27/2647 ,  H04L5/0048 ,  H04L25/0228

摘要： A receiver uses knowledge of pilot symbols transmitted by a neighboring sector to reduce interference in a received data symbol. The received data symbol is transmitted on one or more data subcarriers in a first sector. Overlapping pilot symbols transmitted on overlapping pilot carriers in a second sector are determined and used to generate channel estimates for the overlapping pilot carriers. The overlapping pilot symbols and pilot channel estimates are then used to reduce interference in the received data symbol.

摘要翻译： 接收机使用由相邻扇区发送的导频符号的知识来减少接收的数据符号中的干扰。 所接收的数据符号在第一扇区中的一个或多个数据子载波上发送。 确定在第二扇区中的重叠导频载波上发送的重叠导频符号，并用于生成重叠导频载波的信道估计。 然后使用重叠导频符号和导频信道估计来减少接收到的数据符号中的干扰。

公开(公告)号：US20080298285A1

公开(公告)日：2008-12-04

申请号：US11757679

申请日：2007-06-04

申请人： Rajaram Ramesh ,  Kumar Balachandran ,  Havish Koorapaty

发明人： Rajaram Ramesh ,  Kumar Balachandran ,  Havish Koorapaty

IPC分类号： H04B7/00 ,  H04L12/66

CPC分类号： H04W12/02 ,  H04L65/607 ,  H04W84/00

摘要： Secure, digital, packet-switched, voice telephony calls are wirelessly transmitted in an efficient manner that reduces air interface bandwidth consumption by encrypting only vocoder data frames containing encoded speech, and not encrypting vocoder data frames that do not contain speech, such as those containing silence parameters. The collective reduced bandwidth consumption across a large number of voice telephony calls may allow for the admission of one or more new calls during times of voice telephony congestion. Not encrypting the silence parameters does not compromise call privacy or security, since the silence data frames do not carry any speech. The classification of encoded data frames as containing speech or not may be performed in a variety of ways.

摘要翻译： 安全，数字，分组交换，语音电话呼叫以有效的方式无线传输，通过仅加密包含编码语音的声码器数据帧，而不加密不包含语音的声码器数据帧，减少空中接口带宽消耗，例如包含 沉默参数。 在大量语音电话呼叫中的集体降低的带宽消耗可以允许在语音电话拥塞期间允许一个或多个新的呼叫。 不加密静音参数不会影响呼叫隐私或安全性，因为静音数据帧不携带任何语音。 可以以各种方式来执行编码数据帧作为包含语音的分类。

公开(公告)号：US06871061B1

公开(公告)日：2005-03-22

申请号：US09063720

申请日：1998-04-21

申请人： Havish Koorapaty ,  Peter D. Karabinis

发明人： Havish Koorapaty ,  Peter D. Karabinis

IPC分类号： G01S1/00 ,  G01S5/10 ,  G01S5/14 ,  G01S19/25 ,  H04B7/185 ,  H04W52/02 ,  H04W64/00 ,  H04W84/06 ,  H04W88/02 ,  H04M11/04 ,  H04B7/00 ,  H04Q7/20 ,  G01S5/02

CPC分类号： G01S19/06 ,  G01S5/10 ,  H04B7/18554 ,  H04W52/0245 ,  H04W52/0254 ,  H04W52/0258 ,  H04W64/00 ,  H04W84/06 ,  H04W88/02 ,  Y02D70/164 ,  Y02D70/446

摘要： A mobile radiotelephone terminal having a satellite radiotelephone and a Global Positioning System (GPS) obtains a coarse position of the mobile radiotelephone terminal from satellite radiotelephone system communications. The GPS receiver uses the coarse position to determine an accurate position of the mobile radiotelephone terminal. Accordingly, by obtaining a coarse position from the satellite radiotelephone systems communications, the computation time for the GPS receiver to compute an accurate position of the mobile radiotelephone terminal may be reduced. By allowing a reduction of computation time by the GPS receiver, an accurate position may be obtained more quickly and/or with reduced power.

摘要翻译： 具有卫星无线电话机和全球定位系统（GPS）的移动无线电话终端从卫星无线电话系统通信获得移动无线电话终端的粗略位置。 GPS接收机使用粗略位置来确定移动无线电话终端的准确位置。 因此，通过从卫星无线电话系统通信获取粗略位置，可以减少GPS接收机计算移动无线电话终端的准确位置的计算时间。 通过允许由GPS接收机减少计算时间，可以更快速地和/或以降低的功率获得准确的位置。

公开(公告)号：US06463450B1

公开(公告)日：2002-10-08

申请号：US09384111

申请日：1999-08-26

申请人： Kumar Balachandran ,  Havish Koorapaty

发明人： Kumar Balachandran ,  Havish Koorapaty

IPC分类号： G06F1717

CPC分类号： G06F17/17

摘要： A method and apparatus for determining the location of the peak of a signal using an adaptive filter bank. The method includes the steps of providing a set of calculated output points for the function using a predetermined calculation interval. A maximum output point of the set is then determined, and the output points of the function are interpolated within the region of the maximum. A maximum of the interpolated output points approaches the peak of the function. The apparatus includes a plurality of interconnected digital filters operating on the function to calculate output values, and at least one control unit in communication with the digital filters. The control unit is operable to control the output of the filters and to select a first maximum of the output values. The control unit allows progressive interpolation of output values surrounding the first maximum to determine whether the interpolated output values approach a peak.

摘要翻译： 一种用于使用自适应滤波器组确定信号的峰值的位置的方法和装置。 该方法包括以下步骤：使用预定的计算间隔为功能提供一组计算的输出点。 然后确定集合的最大输出点，并且在最大值的区域内插入函数的输出点。 内插输出点的最大值接近函数的峰值。 该装置包括多个互连的数字滤波器，用于计算输出值的功能，以及与数字滤波器通信的至少一个控制单元。 控制单元可操作以控制滤波器的输出并选择输出值的第一最大值。 控制单元允许对包围第一最大值的输出值进行逐行插值，以确定内插输出值是否接近峰值。

公开(公告)号：US09900131B2

公开(公告)日：2018-02-20

申请号：US13430865

申请日：2012-03-27

申请人： Havish Koorapaty ,  Robert Baldemair ,  Jung-Fu Cheng ,  Mattias Frenne ,  Daniel Larsson

发明人： Havish Koorapaty ,  Robert Baldemair ,  Jung-Fu Cheng ,  Mattias Frenne ,  Daniel Larsson

IPC分类号： H04W28/26 ,  H04B7/005 ,  H04L5/00 ,  H04L27/26

CPC分类号： H04L5/0048 ,  H04L5/0007 ,  H04L5/0053 ,  H04L27/2611

摘要： Devices and methods for transmitting information in resource blocks between a base station and one or more communication devices are disclosed. In each resource block (RB) used for a data or control channel transmission, a plurality of non-overlapping regions of resource elements (REs) are defined. Each region is associated with one or multiple unique reference symbols (RSs), and may be further associated with one or more antenna ports. When user equipment (UE) demodulates the information it receives in a particular region of an RB, it uses the RS and/or antenna port associated with that region. The RS and/or antenna port information may be used, for example, to estimate a channel of the communication network or to demodulate and decode the data contained within the associated regions.

公开(公告)号：US09780931B2

公开(公告)日：2017-10-03

申请号：US13494040

申请日：2012-06-12

申请人： Havish Koorapaty ,  Robert Baldemair ,  Jung-Fu Cheng ,  Mattias Frenne ,  Daniel Larsson

发明人： Havish Koorapaty ,  Robert Baldemair ,  Jung-Fu Cheng ,  Mattias Frenne ,  Daniel Larsson

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

CPC分类号： H04L5/0048 ,  H04L5/0023 ,  H04L5/0026 ,  H04L5/0053 ,  H04L25/0204 ,  H04L25/0228 ,  H04L27/2611

摘要： Devices and methods for transmitting information in resource blocks between a base station and one or more communication devices are disclosed. In each resource block (RB) used for a data or control channel transmission, a plurality of non-overlapping regions of resource elements (REs) are defined. Each region is associated with one or multiple unique reference symbols (RSs). When user equipment (UE) demodulates the information it receives in a particular region of a resource block (RB), it uses the reference symbol (RS) associated with that region. The reference symbol (RS) information may be used, for example, to estimate a channel of the communication network or to demodulate and decode the data contained within the associated regions.

公开(公告)号：US09735939B2

公开(公告)日：2017-08-15

申请号：US13580654

申请日：2012-04-26

申请人： Havish Koorapaty ,  Jung-Fu Cheng ,  Mattias Frenne ,  Johan Furuskog ,  Daniel Larsson ,  Stefan Parkvall

发明人： Havish Koorapaty ,  Jung-Fu Cheng ,  Mattias Frenne ,  Johan Furuskog ,  Daniel Larsson ,  Stefan Parkvall

IPC分类号： H04W72/04 ,  H04L5/00 ,  H04W72/12

CPC分类号： H04L5/0053 ,  H04L5/0007 ,  H04W72/121 ,  H04W72/1289

摘要： A method in a network node for transmitting control information to a user equipment in a telecommunications system is provided. The control information is scheduled in time intervals of a downlink shared data channel, wherein the control information is allocated resource elements in resource blocks of a time-frequency Orthogonal Frequency Division Multiplexing, OFDM, grid in the time intervals in which the control information is scheduled. The network node determines for a time interval, a set of user equipments for which control information is scheduled in the time interval. Also, it selects for a user equipment comprised in the determined set of user equipments, at least one group of user equipments amongst one or more groups of user equipments to which the user equipment is assigned. It also prepares a group signal corresponding to the selected one group of user equipments by allocating resource elements in the resource blocks of the time interval to the group signal. Furthermore, the network node transmits the prepared group signal in the allocated resource element in the time interval to the user equipment such that the user equipment is enabled to determine whether the control information that is allocated resource elements in the time interval is intended for the user equipment or not.A network node, a method in user equipment and a user equipment are also provided.

公开(公告)号：US20140301283A1

公开(公告)日：2014-10-09

申请号：US13885723

申请日：2013-03-19

申请人： Mattias Frenne ,  Jung-Fu Cheng ,  Johan Furuskog ,  Havish Koorapaty ,  Daniel Larsson

发明人： Mattias Frenne ,  Jung-Fu Cheng ,  Johan Furuskog ,  Havish Koorapaty ,  Daniel Larsson

IPC分类号： H04W72/04

CPC分类号： H04W72/042 ,  H04B7/0413 ,  H04B7/0456 ,  H04B7/0686 ,  H04B7/0691 ,  H04L1/0068 ,  H04L1/0069 ,  H04L5/001 ,  H04L5/0023 ,  H04L5/0037 ,  H04L5/0051 ,  H04L5/0053 ,  H04L27/2627 ,  H04W72/0406 ,  H04W72/044 ,  H04W72/0453 ,  H04W88/02

摘要： Time-frequency resources in a single PRB pair are used for both frequency-localized transmissions as well as distributed transmissions. A first control message is transmitted (2710) to a first user equipment (UE) using a first PRB pair, using first subsets of resource elements that are aggregated in a frequency-localized manner and that are transmitted using a single antenna port. A second control message to a second UE is simultaneously transmitted (2710), also using the first PRB pair, using second subsets of resources that are aggregated in a frequency-distributed manner across the first PRB pair and one or more additional PRB pairs and that are transmitted using at least two antenna ports, including the single antenna port used to transmit the symbols in the first non-overlapping subsets of resource elements.

摘要翻译： 单个PRB对中的时频资源用于频率本地化传输以及分布式传输。 使用第一PRB对，使用以频率定位的方式聚合并且使用单个天线端口发送的资源元素的第一子集来向第一用户设备（UE）发送第一控制消息（2710）。 使用第二个资源子集同时发送到第二个UE的第二个控制消息（2710），第二个资源子集以频率分布的方式跨越第一个PRB对和一个或多个附加的PRB对进行聚合， 使用至少两个天线端口发送，包括用于在资源元素的第一非重叠子集中发送符号的单个天线端口。

公开(公告)号：US08654687B2

公开(公告)日：2014-02-18

申请号：US13109524

申请日：2011-05-17

申请人： Havish Koorapaty ,  Jung-Fu Cheng

发明人： Havish Koorapaty ,  Jung-Fu Cheng

IPC分类号： H04L5/14

CPC分类号： H04L1/0002 ,  H04B7/2643 ,  H04W84/045 ,  H04W92/20

摘要： A system and method to use existing Long Term Evolution (LTE) and Worldwide Interoperability for Microwave Access (WiMAX) based signaling to effectuate dual-channel Time Division Duplex (TDD) communication between two transceivers giving preference to one type of subframes (either downlink or uplink) for data transmission. In backhaul communications between pico (or femto) and macro base stations, using LTE and WiMAX's TDD mode in such a manner effectively reduces unnecessary transmissions of pilot and synchronization sequence in downlink signaling, thereby reducing the level of pilot overhead and minimizing interference when data is not being transmitted. Similarly, the use of existing LTE (or WiMAX) implementations of TDD radio frames in this manner may achieve radio silence for some duration (e.g., when no uplink sub-frames are transmitted) when operating in a license-exempt spectrum, thereby allowing other license-exempt devices to potentially share the radio channel during the silence period.

摘要翻译： 使用现有长期演进（LTE）和全球微波接入互操作性（WiMAX）的信令的系统和方法来实现两个收发器之间的双信道时分双工（TDD）通信，其优先于一种类型的子帧（下行链路或 上行链路）进行数据传输。 在微微（或毫微微）和宏基站之间的回程通信中，以这种方式使用LTE和WiMAX的TDD模式有效地减少了下行链路信令中的导频和同步序列的不必要的传输，从而降低了导频开销的水平，并且当数据为 不被传送 类似地，以这种方式使用TDD无线电帧的现有LTE（或WiMAX）实施方式可以在一些持续时间内实现无线电静音（例如，当没有发送上行链路子帧时）在免许可频谱中操作，从而允许其他 许可证免除设备在沉默期间可能共享无线电频道。

公开(公告)号：US08526305B2

公开(公告)日：2013-09-03

申请号：US12548045

申请日：2009-08-26

申请人： Rajaram Ramesh ,  Kumar Balachandran ,  Havish Koorapaty ,  Stephen Grant

发明人： Rajaram Ramesh ,  Kumar Balachandran ,  Havish Koorapaty ,  Stephen Grant

IPC分类号： H04J1/16

CPC分类号： H04W48/14 ,  H04W48/20 ,  H04W52/0206 ,  H04W52/0274 ,  Y02D70/00 ,  Y02D70/1222 ,  Y02D70/1262 ,  Y02D70/146 ,  Y02D70/164

摘要： The present invention provides systems and methods that enable a base station to consume less power. According to an embodiment of the invention, the base station reduces its power consumption by not continuously broadcasting control information. In such an embodiment, a mobile station that seeks access to a network to which the base station provides access does not search for broadcast control information prior to transmitting an access message to the base station, but rather simply transmits on a predetermined access channel an access request message. A base station that receives the access request message may unicast control information to the mobile station.

摘要翻译： 本发明提供使基站能够消耗更少功率的系统和方法。 根据本发明的实施例，基站通过不连续地广播控制信息来降低其功耗。 在这样的实施例中，寻求对基站提供访问的网络的访问的移动站在向基站发送接入消息之前不搜索广播控制信息，而是简单地在预定接入信道上发送接入 请求消息。 接收访问请求消息的基站可以向移动台单播控制信息。