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61. 发明申请

US20080056193A1 PRE-ALLOCATED RANDOM ACCESS IDENTIFIERS 有权
标题翻译：预分配随机访问标识符
公开(公告)号：US20080056193A1
公开(公告)日：2008-03-06
申请号：US11469794
申请日：2006-09-01
申请人： Yair Bourlas , Adam E. Newham , Lei Wang , Srikanth Gummadi
发明人： Yair Bourlas , Adam E. Newham , Lei Wang , Srikanth Gummadi
IPC分类号： H04Q7/00
CPC分类号： H04L27/2601 , H04B7/2668 , H04J11/0073 , H04L5/0051 , H04W36/0016 , H04W36/08 , H04W64/006 , H04W72/048 , H04W72/14 , H04W74/004 , H04W74/006 , H04W74/0833 , H04W74/085 , H04W74/0875 , H04W74/0891 , H04W76/28 , H04W88/02 , H04W88/08
摘要： Systems and methods of pre-allocating identifiers to wireless devices for use in requesting resources over a random access channel are described. A wireless communication system includes a random access channel over which wireless devices can anonymously send requests for resources. The base stations receiving and processing the anonymous requests reduces the probability of random access channel collisions and conserves the resources needed to support the anonymous requests by pre-allocating one or more codes to select wireless devices. The wireless devices having the pre-allocated codes can transmit a particular code over the random access channel as a request for resources that uniquely identifies the requester.
摘要翻译：描述了将标识符预分配给无线设备以用于在随机接入信道上请求资源的系统和方法。无线通信系统包括随机接入信道，无线设备可通过该随机接入信道匿名地发送资源请求。接收和处理匿名请求的基站降低随机接入信道冲突的概率，并通过预分配一个或多个代码来选择无线设备来节省支持匿名请求所需的资源。具有预先分配的代码的无线设备可以通过随机接入信道发送特定的代码，作为唯一地标识请求者的资源的请求。

62. 发明申请

US20060171488A1 Phase advance compensation for MIMO time-switch preamble modes 有权
标题翻译： MIMO时间切换前导码模式的相位提前补偿
公开(公告)号：US20060171488A1
公开(公告)日：2006-08-03
申请号：US11046085
申请日：2005-01-28
申请人： John Rosenlof , Kirupairaj Asirvatham , Srikanth Gummadi
发明人： John Rosenlof , Kirupairaj Asirvatham , Srikanth Gummadi
IPC分类号： H04L27/06
CPC分类号： H04L27/2657 , H04L27/2675 , H04L2027/003
摘要： A communications receiver is provided that includes a first and second compensators 64 and 68, a pilot tracker 60, and a demodulator 66. The first compensator 64 is operable to adjust an input signal based on both a coarse frequency offset and a fine frequency offset to produce an adjusted input signal. The pilot tracker 60 determines an estimated residual frequency offset based on at least a portion of the adjusted input signal. The demodulator 66 determines at least a first symbol sequence and a second symbol sequence based on the adjusted input signal. The second compensator 68 is operable to adjust the first symbol sequence and the second symbol sequence based on the estimate residual frequency offset.
摘要翻译：提供一种通信接收机，其包括第一和第二补偿器64和68，导频跟踪器60和解调器66.第一补偿器64可操作以基于粗频率偏移和精细频率偏移来调整输入信号产生调整后的输入信号。导频跟踪器60基于经调整的输入信号的至少一部分来确定估计的残余频率偏移。解调器66基于经调整的输入信号确定至少第一符号序列和第二符号序列。第二补偿器68可操作以基于估计残余频率偏移来调整第一符号序列和第二符号序列。

63. 发明申请

US20050147022A1 Preamble transmit power tailoring system, a method of tailoring preamble transmit power and an OFDM transmitter employing the same 审中-公开
标题翻译：前导码发射功率调整系统，一种定制前导码发射功率的方法和采用它的OFDM发射机
公开(公告)号：US20050147022A1
公开(公告)日：2005-07-07
申请号：US10744147
申请日：2003-12-22
申请人： Srinath Hosur , Srikanth Gummadi , Anuj Batra , Michael Polley
发明人： Srinath Hosur , Srikanth Gummadi , Anuj Batra , Michael Polley
IPC分类号： H04B7/005 , H04J11/00 , H04L27/26
CPC分类号： H04W52/325 , H04L27/2614 , H04L27/2626 , H04W52/367 , H04W52/52
摘要： A preamble transmit power tailoring system for use with an Orthogonal Frequency Division Multiplexing (OFDM) transmitter, a method of tailoring preamble transmit power, and an OFDM transmitter. In one embodiment, the preamble transmit power tailoring system includes (1) a peak power estimator configured to calculate, based on a payload to be transmitted by the OFDM transmitter and an associated transmit power limitation value, an available power headroom and (2) a preamble power enhancer, associated with the peak power estimator, configured to increase transmit power of at least a portion of a preamble for the payload subject to the available power headroom.
摘要翻译：一种与正交频分复用（OFDM）发射机一起使用的前导码发射功率调整系统，一种定制前导码发送功率的方法和一种OFDM发射机。在一个实施例中，前导码发射功率调整系统包括：（1）峰值功率估计器，被配置为基于要由OFDM发射机发射的有效载荷和相关联的发射功率限制值，计算可用的功率余量，以及（2）与峰值功率估计器相关联的前导码功率增强器被配置为增加对可用功率余量的有效载荷的前导码的至少一部分的发射功率。

64. 发明授权

US06754475B1 Transmission performance measurement and use thereof 有权
标题翻译：传输性能测量及其使用
公开(公告)号：US06754475B1
公开(公告)日：2004-06-22
申请号：US10185974
申请日：2002-06-28
申请人： Robert Mark Harrison , Kamyar Rohani , Srikanth Gummadi
发明人： Robert Mark Harrison , Kamyar Rohani , Srikanth Gummadi
IPC分类号： H03C162
CPC分类号： H04L1/0001 , H04B7/04 , H04B7/0615 , H04B7/0689 , H04L1/0025 , H04L1/0026
摘要： A method for and wireless communications unit adapted for measuring transmission performance for a signal emanating from an antenna is discussed. The wireless communications unit includes a receiver for receiving the signal in a first and a second time interval to provide, respectively, a first and a second signal; and a channel processor for assessing a relative channel metric corresponding to the first and second signal, the relative channel metric indicative of the transmission performance of a transmission mode. A corresponding method and base transmitter is also arranged and adapted for adjusting a transmission mode based on measured transmission performance and includes a transmitter for sending the signal in the first and second time interval and a base channel processor for determining a channel metric corresponding to the first and second signal, the channel metric indicative of the transmission performance; the transmitter further sending a control signal corresponding to the transmission mode adjusted according to the transmission performance.
摘要翻译：讨论了一种用于测量从天线发出的信号的传输性能的方法和无线通信单元。无线通信单元包括接收器，用于在第一和第二时间间隔中接收信号以分别提供第一和第二信号; 以及信道处理器，用于评估对应于第一和第二信号的相对信道度量，表示传输模式的传输性能的相对信道度量。相应的方法和基站发射机也被布置并适于基于测量的传输性能来调整传输模式，并且包括用于在第一和第二时间间隔内发送信号的发射机和用于确定与第一和第二时间间隔对应的信道度量的基本信道处理器和第二信号，表示传输性能的信道度量; 发射机进一步发送对应于根据传输性能调整的传输模式的控制信号。

65. 发明授权

US09088958B2 Methods and apparatus for identifying subscriber station mobility 有权
标题翻译：用于识别用户站移动性的方法和装置
公开(公告)号：US09088958B2
公开(公告)日：2015-07-21
申请号：US13301549
申请日：2011-11-21
申请人： Srikanth Gummadi , Ron Porat , Todd R. Sutton
发明人： Srikanth Gummadi , Ron Porat , Todd R. Sutton
IPC分类号： H04W64/00 , H04W52/28 , H04W24/00 , H04W28/18
CPC分类号： H04W4/027 , H04L5/0007 , H04W24/00 , H04W24/08 , H04W28/18 , H04W52/282 , H04W64/006 , H04W72/048
摘要： Methods and apparatus for identifying a subscriber station which is in motion, determining a mobility metric indicative of a level of mobility of the subscriber station and varying or updating one or more operating parameters based on the mobility metric. An apparatus can determine a measure of mobility based on one or a combination of a plurality of factors, such as variations in signal strength, variations in a channel estimate, or variations in phase or frequency of a particular signal or signal component. The one or more measures of mobility can be combined to form a single measure of mobility, the measure of mobility can be quantized to a predetermined number of mobility levels and one or more operating parameters can be varied or adjusted based on the mobility level.
摘要翻译：用于识别运动中的用户站的方法和装置，确定表示用户台的移动性水平的移动性度量，并且基于移动性度量改变或更新一个或多个运行参数。装置可以基于多个因素的一个或组合来确定移动性的度量，例如信号强度的变化，信道估计的变化，或特定信号或信号分量的相位或频率的变化。移动性的一个或多个测量可以被组合以形成移动性的单个度量，可以将移动性的量度量化到预定数量的移动性水平，并且可以基于移动性水平来改变或调整一个或多个操作参数。

66. 发明申请

US20140355572A1 METHOD AND APPARATUS FOR AUTOMATIC GAIN CONTROL FOR TD-SCDMA SYSTEMS 审中-公开
标题翻译： TD-SCDMA系统自动增益控制方法与装置
公开(公告)号：US20140355572A1
公开(公告)日：2014-12-04
申请号：US14128353
申请日：2011-07-25
申请人： Aamod Dinkar Khandekar , Srikanth Gummadi , Kang Wang , Minkui Liu
发明人： Aamod Dinkar Khandekar , Srikanth Gummadi , Kang Wang , Minkui Liu
IPC分类号： H04W74/08 , H04W52/52
CPC分类号： H04W74/0891 , H04W52/52
摘要： A method and apparatus in wireless communications is provided. The method may include measuring received powers levels for a first window of samples, and computing a gain value based on the measured received powers levels. The method may also include determining an offset duration such that the first window of samples and a second window of samples both are included within a downlink region that has downlink power within a threshold level. The method may additionally include applying the gain value to the second window of samples, and the second window of samples may occur after the offset duration.
摘要翻译：提供了一种无线通信中的方法和装置。该方法可以包括测量第一采样窗口的接收功率电平，以及基于测量的接收功率电平来计算增益值。该方法还可以包括确定偏移持续时间，使得第一采样窗口和第二采样窗口都包括在具有阈值电平内的下行链路功率的下行链路区域内。该方法可以另外包括将增益值应用于第二采样窗口，并且第二采样窗口可以在偏移持续时间之后发生。

67. 发明授权

US08767726B2 Convergence sublayer for use in a wireless broadcasting system 有权
标题翻译：用于无线广播系统的收敛子层
公开(公告)号：US08767726B2
公开(公告)日：2014-07-01
申请号：US12906693
申请日：2010-10-18
申请人： Brian P Petry , Dennis P Connors , Gene W. Marsh , Srikanth Gummadi , Keerthi S Govind , William S Burchill , Seema Madan
发明人： Brian P Petry , Dennis P Connors , Gene W. Marsh , Srikanth Gummadi , Keerthi S Govind , William S Burchill , Seema Madan
IPC分类号： H04L12/56
CPC分类号： H04L65/601 , H04H20/12 , H04H20/26 , H04H20/67 , H04H20/95 , H04L47/621 , H04L65/4076 , H04L65/605 , H04N21/235 , H04N21/2362 , H04N21/2381 , H04N21/2383 , H04N21/242 , H04N21/26208 , H04N21/6131 , H04N21/64315 , H04N21/64322 , H04N21/64707
摘要： A method of encapsulating data and a single frequency network configured to perform the method are disclosed. A content stream of data packets is received, and the data packets in the content stream are formatted in accordance with a first protocol. Information identifying a container size established for the content stream is received. The data packets formatted in accordance with the first protocol are fragmented and packed to form data units formatted in accordance with a second protocol, and the data units are sized based on the container size. The data units formatted in accordance with the second protocol are encapsulated to form second protocol data packets. The second protocol data packets are provided to a transmitter that is synchronized to one or more transmitters in a single frequency network so that each transmitter in the single frequency network broadcasts a same signal that includes the second protocol data packets.
摘要翻译：公开了一种封装数据的方法和被配置为执行该方法的单频网络。接收数据分组的内容流，根据第一协议对内容流中的数据分组进行格式化。接收识别为内容流建立的容器大小的信息。根据第一协议格式化的数据分组被分段和打包以形成根据第二协议格式化的数据单元，并且基于容器大小对数据单元进行大小。根据第二协议格式化的数据单元被封装以形成第二协议数据分组。第二协议数据分组被提供给与单个频率网络中的一个或多个发射机同步的发射机，使得单个频率网络中的每个发射机广播包括第二协议数据分组的相同信号。

68. 发明授权

US08532052B2 Pre-allocated random access identifiers 有权
标题翻译：预先分配的随机访问标识符
公开(公告)号：US08532052B2
公开(公告)日：2013-09-10
申请号：US13565405
申请日：2012-08-02
申请人： Yair Bourlas , Adam E. Newham , Lei Wang , Srikanth Gummadi
发明人： Yair Bourlas , Adam E. Newham , Lei Wang , Srikanth Gummadi
IPC分类号： H04W4/00 , H04W36/00
CPC分类号： H04L27/2601 , H04B7/2668 , H04J11/0073 , H04L5/0051 , H04W36/0016 , H04W36/08 , H04W64/006 , H04W72/048 , H04W72/14 , H04W74/004 , H04W74/006 , H04W74/0833 , H04W74/085 , H04W74/0875 , H04W74/0891 , H04W76/28 , H04W88/02 , H04W88/08
摘要： Systems and methods of pre-allocating identifiers to wireless devices for use in requesting resources over a random access channel are described. A wireless communication system includes a random access channel over which wireless devices can anonymously send requests for resources. The base stations receiving and processing the anonymous requests reduces the probability of random access channel collisions and conserves the resources needed to support the anonymous requests by pre-allocating one or more codes to select wireless devices. The wireless devices having the pre-allocated codes can transmit a particular code over the random access channel as a request for resources that uniquely identifies the requester.
摘要翻译：描述了将标识符预分配给无线设备以用于在随机接入信道上请求资源的系统和方法。无线通信系统包括随机接入信道，无线设备可通过该随机接入信道匿名地发送对资源的请求。接收和处理匿名请求的基站降低随机接入信道冲突的概率，并通过预分配一个或多个代码来选择无线设备来节省支持匿名请求所需的资源。具有预先分配的代码的无线设备可以通过随机接入信道发送特定的代码，作为唯一地标识请求者的资源的请求。

69. 发明申请

US20130028296A1 CHIP X2 CORRELATION HYPOTHESES USING CHIP X1 SAMPLES 审中-公开
标题翻译：使用芯片X1样品的芯片X2相关假设
公开(公告)号：US20130028296A1
公开(公告)日：2013-01-31
申请号：US13192003
申请日：2011-07-27
申请人： Aamod D. Khandekar , Dario Fertonani , Srikanth Gummadi
发明人： Aamod D. Khandekar , Dario Fertonani , Srikanth Gummadi
IPC分类号： H04B1/707
CPC分类号： H04B1/7075 , H04B2001/70724 , H04B2201/70707 , H04B2201/70713 , H04B2201/70727
摘要： A UE may store received samples of a wireless signal at cx1 to reduce memory usage, but then may correlate those samples with cx2 timing hypotheses to improve performance. The received sequence is resampled at cx2 instead of cx1. The UE still performs the correlation of the cx2 timing hypotheses for the performance gain, but the reference waveform is resampled with cx2 time offset. A Fast Fourier Transform (FFT) may be taken of the received and reference waveforms. In the frequency domain, resampling may be performed by multiplying the FFT of the reference waveform by a phase ramp—a pointwise multiplication in the frequency domain with a constant magnitude sequence whose phase varies linearly.
摘要翻译： UE可以以cx1存储无线信号的接收样本以减少存储器使用，但是然后可以将这些采样与cx2定时假设相关联以提高性能。接收的序列在cx2而不是cx1重采样。 UE仍然执行cx2定时假设与性能增益的相关性，但参考波形用cx2时间偏移重采样。可以对接收和参考波形进行快速傅里叶变换（FFT）。在频域中，重采样可以通过将参考波形的FFT乘以频域中的相位斜坡 - 点相乘乘以其相位线性变化的恒定幅度序列来执行。

70. 发明授权

US08204442B2 Intercell interference mitigation 有权
标题翻译：小区干扰减轻
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。

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