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51. 发明授权

US5381425A System for encoding and decoding of convolutionally encoded data 失效
标题翻译：用于对卷积编码数据进行编码和解码的系统
公开(公告)号：US5381425A
公开(公告)日：1995-01-10
申请号：US858713
申请日：1992-03-27
申请人： Donald L. Bitzer , Mladen A. Vouk , Vijay Srinivasan , Sunny K. Lo , Ajay Dholakia , Elena M. Gonzalez , Tina M. Lee , LiFeng Wang , Havish Koorapaty
发明人： Donald L. Bitzer , Mladen A. Vouk , Vijay Srinivasan , Sunny K. Lo , Ajay Dholakia , Elena M. Gonzalez , Tina M. Lee , LiFeng Wang , Havish Koorapaty
IPC分类号： H03M13/23 , H03M13/00
CPC分类号： H03M13/23
摘要： A convolutional encoding/decoding system encodes a data bit stream into n bit parity sets from k bit data bit sets, using code words of length L. The system is dependent upon the finding that unique data to parity tables can be generated where both data and parity bit blocks are w bits in length. The value of w=n(L-k)/(n-k). An encoded parity bit stream is subjected to Exclusive OR operation through a connection mask or masks that are dependent upon the encoding code words. The Exclusive OR operation generates syndrome symbols indicative of the presence of errors in the parity bit stream and which are employed to address a correction table. Parity correction values are derived from the correction table and are used to revise the parity bit stream, which is then decoded, using a parity to data table. A number of parity correction procedures are disclosed.
摘要翻译：卷积编码/解码系统使用长度为L的码字将数据比特流编码为来自k位数据位集合的n位奇偶校验集。系统依赖于在数据和数据位两者之间可以产生唯一数据到奇偶校验表的发现奇偶校验位块的长度为w位。 w = n（L-k）/（n-k）的值。编码奇偶校验位流通过连接掩码或取决于编码码字的掩码进行异或运算。异或运算产生指示奇偶校验位流中存在错误的校正子符号，并且用于寻址校正表。奇偶校正值从校正表导出，并且用于修正奇偶校验位流，然后使用奇偶校验到数据表进行解码。公开了一些奇偶校正程序。

52. 发明授权

US09236991B2 Network node, user equipment and methods therein 有权
标题翻译：网络节点，用户设备及其中的方法
公开(公告)号：US09236991B2
公开(公告)日：2016-01-12
申请号：US13502700
申请日：2012-02-07
申请人： Mattias Frenne , Christian Hoymann , George Jongren , Johan Furuskog , Daniel Larsson , Jung-Fu Cheng , Havish Koorapaty
发明人： Mattias Frenne , Christian Hoymann , George Jongren , Johan Furuskog , Daniel Larsson , Jung-Fu Cheng , Havish Koorapaty
IPC分类号： H04W4/00 , H04L5/00
CPC分类号： H04L5/0051 , H04L5/0007 , H04L5/0094
摘要： A method in a user equipment device for estimating a channel upon receiving an enhanced control channel (eCCH) from a network node in a telecommunications system includes distributing the eCCH over multiple resource pairs, where each of the multiple resource block pairs includes a number of resources. Each of the resources is associated with a respective antenna port. The user equipment device identifies an antenna port that is associated with multiple ones of the resources. The multiple ones of the resources are present in different resource block pairs of the multiple resource block pairs over which the eCCH is distributed. Identifying the antenna port is based on how the eCCH is mapped to the multiple resource block pairs. The user equipment device estimates the downlink channel for the eCCH based on the identified antenna port in the multiple ones of the resources in the multiple resource block pairs.
摘要翻译：用于在电信系统中从网络节点接收到增强控制信道（eCCH）时估计信道的用户设备中的方法包括：通过多个资源对分配所述eCCH，其中所述多个资源块对中的每一个包括多个资源。每个资源与相应的天线端口相关联。用户设备设备识别与多个资源相关联的天线端口。资源中的多个资源存在于分配有eCCH的多个资源块对的不同资源块对中。识别天线端口是基于eCCH如何映射到多个资源块对。用户设备设备基于多个资源块对中的多个资源中所识别的天线端口估计用于eCCH的下行链路信道。

53. 发明授权

US09094906B2 Multi-stage timing and frequency synchronization 有权
标题翻译：多级定时和频率同步
公开(公告)号：US09094906B2
公开(公告)日：2015-07-28
申请号：US13659310
申请日：2012-10-24
申请人： Jiann-Ching Guey , Jung-Fu Cheng , Havish Koorapaty
发明人： Jiann-Ching Guey , Jung-Fu Cheng , Havish Koorapaty
IPC分类号： H04L27/26 , H04W56/00
CPC分类号： H04W56/001 , H04L27/2657 , H04L27/2662 , H04L27/2675 , H04L27/2686 , H04W56/00 , H04W56/0035
摘要： According to exemplary embodiments of the invention, timing and frequency offset estimation is divided into two or more stages. In each stage, a different subset of the available reference symbols is selected to perform timing synchronization, frequency synchronization, or joint timing and frequency synchronization. In each non-final stage, a respective set of the reference symbols is used to perform timing synchronization or frequency synchronization in order to narrow the uncertainty window for the timing or frequency offset, and thus reduce the search space for the final stage. In the final stage, a different set of reference symbols may be used to perform joint timing and frequency synchronization over the reduced search space.
摘要翻译：根据本发明的示例性实施例，定时和频率偏移估计被分为两个或多个阶段。在每个阶段中，选择可用参考符号的不同子集以执行定时同步，频率同步或联合定时和频率同步。在每个非最后阶段中，使用相应的参考符号组来执行定时同步或频率同步，以便缩小定时或频率偏移的不确定性窗口，从而减少最终级的搜索空间。在最后阶段，可以使用不同的参考符号集来在减少的搜索空间上执行联合定时和频率同步。

54. 发明授权

US08965428B2 Systems, methods and devices for reducing impact of fading dips on radio channels 有权
标题翻译：用于减少衰落对无线电信道影响的系统，方法和设备
公开(公告)号：US08965428B2
公开(公告)日：2015-02-24
申请号：US13556625
申请日：2012-07-24
申请人： Havish Koorapaty , Jan-Erik Berg , Jonas Hansryd
发明人： Havish Koorapaty , Jan-Erik Berg , Jonas Hansryd
IPC分类号： H04B15/00
CPC分类号： H04L25/0228 , H04L5/0023 , H04L5/0048 , H04L5/006 , H04L25/0204 , H04L25/022 , H04L25/03343
摘要： The impact of a fading dip in a radio channel on the communication between a first and a second antenna may be reduced by receiving a sounding signal at the first antenna or the second antenna over the radio channel and measuring the frequency response of the radio channel using this sound signal that was received. The radio frequency signal that is used to communicate between the first antenna and the second antenna is adjusted in response to the frequency response that was measured in order to reduce an impact of the fading dip in the radio channel on the radio frequency signal during operation. Related systems, methods, and devices are disclosed.
摘要翻译：无线电信道中的衰落下降对第一和第二天线之间的通信的影响可以通过在无线电信道上在第一天线或第二天线处接收到探测信号并且使用收到的这个声音信号。用于在第一天线和第二天线之间进行通信的射频信号是响应于测量的频率响应进行调整的，以便减少无线电信道中的衰落下降对操作期间射频信号的影响。公开了相关系统，方法和设备。

55. 发明授权

US08811331B2 Pilot design using costas arrays 有权
标题翻译：使用costas阵列的飞行员设计
公开(公告)号：US08811331B2
公开(公告)日：2014-08-19
申请号：US12420404
申请日：2009-04-08
申请人： Havish Koorapaty , Jiann-Ching Guey , Kumar Balachandran , Rajaram Ramesh
发明人： Havish Koorapaty , Jiann-Ching Guey , Kumar Balachandran , Rajaram Ramesh
IPC分类号： H04L5/22 , H04L5/00 , H04W72/04
CPC分类号： H04L5/0048 , H04L5/0007 , H04L5/005 , H04L5/0051 , H04L27/2613 , H04W72/0446
摘要： A multi-pilot frame handler (36) of a radio access network node (28) is arranged to prepare a block of a frame of information to include a first pilot signal of a pilot signal first type and a first pilot signal of a pilot signal second type. The pilot signal of the pilot signal first type is expressed as a first Costas array base pattern of resource elements of the block; the pilot signal of the second type is expressed as a second Costas array base pattern of resource elements of the block. The multi-pilot frame handler (36) is arranged to prepare the block so that any pilot signal of the pilot signal first type is carried by at least some subcarriers of a first set of subcarriers of the block and any pilot signal of the pilot signal second type is carried by at least some subcarriers of a second set of subcarriers of the block.
摘要翻译：布置无线电接入网络节点（28）的多导频帧处理器（36）以准备信息帧的块，以包括导频信号第一类型的第一导频信号和导频信号的第一导频信号第二种。导频信号第一类型的导频信号被表示为块的资源元素的第一个科斯塔斯阵列基本模式; 第二类型的导频信号被表示为块的资源元素的第二个科斯塔斯阵列基本模式。多导频帧处理器（36）被布置为准备该块，使得导频信号第一类型的任何导频信号由块的第一组子载波的至少一些子载波和导频信号的任何导频信号第二类型由块的第二组子载波的至少一些子载波承载。

56. 发明授权

US08804615B2 Quick paging in telecommunication systems 有权
标题翻译：电讯系统中的快速寻呼
公开(公告)号：US08804615B2
公开(公告)日：2014-08-12
申请号：US12808779
申请日：2008-12-18
申请人： Rajaram Ramesh , Havish Koorapaty , Kumar Balachandran
发明人： Rajaram Ramesh , Havish Koorapaty , Kumar Balachandran
IPC分类号： H04W4/00
CPC分类号： H04W68/025
摘要： In an orthogonal frequency division multiple access communication system, unused frequency resources during a conventional preamble signal are used for a quick paging mechanism. A set of quick paging signals is sent over the unused frequency resources to signal one or more subscriber stations.
摘要翻译：在正交频分多址通信系统中，在常规前导码信号期间的未使用频率资源用于快速寻呼机制。一组快速寻呼信号通过未使用的频率资源发送，以信号通知一个或多个用户台。

57. 发明申请

US20130121267A1 Network Node, User Equipment and Methods Therein for Transmitting and Receiving Control Information 有权
标题翻译：网络节点，用户设备和方法，用于发送和接收控制信息
公开(公告)号：US20130121267A1
公开(公告)日：2013-05-16
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
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.
摘要翻译：提供了一种用于向电信系统中的用户设备发送控制信息的网络节点中的方法。在下行链路共享数据信道的时间间隔中调度控制信息，其中控制信息在控制信息被调度的时间间隔内被分配在时间 - 频率正交频分复用OFDM网格的资源块中的资源元素。网络节点在时间间隔内确定在时间间隔内为其调度控制信息的一组用户设备。此外，它选择包括在确定的一组用户设备中的用户设备，在分配了用户设备的一组或多组用户设备中的至少一组用户设备。它还通过将时间间隔的资源块中的资源元素分配给组信号来准备与所选择的一组用户设备相对应的组信号。此外，网络节点在分配的资源元素中将准备好的组信号在时间间隔中发送到用户设备，使得用户设备能够确定在时间间隔中被分配的资源元素的控制信息是否意在为用户设备不是。还提供了网络节点，用户设备中的方法和用户设备。

58. 发明申请

US20130121246A1 Multi-Stage Timing and Frequency Synchronization 有权
标题翻译：多级定时和频率同步
公开(公告)号：US20130121246A1
公开(公告)日：2013-05-16
申请号：US13659310
申请日：2012-10-24
申请人： Jiann-Ching Guey , Jung-Fu Cheng , Havish Koorapaty
发明人： Jiann-Ching Guey , Jung-Fu Cheng , Havish Koorapaty
IPC分类号： H04W56/00
CPC分类号： H04W56/001 , H04L27/2657 , H04L27/2662 , H04L27/2675 , H04L27/2686 , H04W56/00 , H04W56/0035
摘要： According to exemplary embodiments of the invention, timing and frequency offset estimation is divided into two or more stages. In each stage, a different subset of the available reference symbols is selected to perform timing synchronization, frequency synchronization, or joint timing and frequency synchronization. In each non-final stage, a respective set of the reference symbols is used to perform timing synchronization or frequency synchronization in order to narrow the uncertainty window for the timing or frequency offset, and thus reduce the search space for the final stage. In the final stage, a different set of reference symbols may be used to perform joint timing and frequency synchronization over the reduced search space.
摘要翻译：根据本发明的示例性实施例，定时和频率偏移估计被分为两个或多个阶段。在每个阶段中，选择可用参考符号的不同子集以执行定时同步，频率同步或联合定时和频率同步。在每个非最后阶段中，使用相应的参考符号组来执行定时同步或频率同步，以便缩小定时或频率偏移的不确定性窗口，从而减少最终级的搜索空间。在最后阶段，可以使用不同的参考符号集来在减少的搜索空间上执行联合定时和频率同步。

59. 发明授权

US08391201B2 System and method for transmit time computation at a relay station 有权
标题翻译：中继站发射时间计算的系统和方法
公开(公告)号：US08391201B2
公开(公告)日：2013-03-05
申请号：US11957522
申请日：2007-12-17
申请人： Ali S. Khayrallah , Havish Koorapaty
发明人： Ali S. Khayrallah , Havish Koorapaty
IPC分类号： H04B7/14
CPC分类号： H04B7/15592
摘要： Communications between a base station and a mobile station is improved through using a relay station. A transmit timing of relayed signals from the relay station is controlled so that the signals from the base station and the relay station arrive to the mobile station aligned with each other within a predetermined tolerance.
摘要翻译：通过使用中继站，提高了基站与移动台之间的通信。控制来自中继站的中继信号的发送定时，使得来自基站和中继站的信号到达移动站，并在预定的公差范围内相互对齐。

60. 发明授权

US08331272B2 Aggregation of resources over multiple frames in a TDD communication system 有权
标题翻译： TDD通信系统中多帧资源的聚合
公开(公告)号：US08331272B2
公开(公告)日：2012-12-11
申请号：US12430605
申请日：2009-04-27
申请人： Rajaram Ramesh , Havish Koorapaty , Kumar Balachandran
发明人： Rajaram Ramesh , Havish Koorapaty , Kumar Balachandran
IPC分类号： H04B7/00 , H04W4/00 , H04J3/00
CPC分类号： H04W72/042 , H04L5/0007 , H04W72/0446
摘要： According to embodiments of the present invention, multiple frames or sub-frames on an uplink channel may be aggregated into one logical unit for demodulation and decoding to allow one data packet to span over multiple frames. Multi-frame aggregation is enabled by modifying the uplink resource allocation messages transmitted to the user terminals. The multi-frame resource allocation message includes a BEGIN FLAG field indicating whether a corresponding frame is the first frame in a multi-frame allocation and a REMAINING RESOURCES field to indicate the number of units (e.g., slots or frames) remaining in the multi-frame allocation.
摘要翻译：根据本发明的实施例，可将上行链路信道上的多个帧或子帧聚合成一个逻辑单元进行解调和解码，以允许一个数据分组跨越多个帧。通过修改发送到用户终端的上行链路资源分配消息来启用多帧聚合。多帧资源分配消息包括一个BEGIN FLAG字段，指示对应的帧是多帧分配中的第一帧还是剩余资源字段，以指示多帧分配中剩余的单元数量（例如，时隙或帧）帧分配。

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