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51. 发明授权

US08040942B2 Method and apparatus for determining an outage in communication systems 有权
标题翻译：用于确定通信系统中断的方法和装置
公开(公告)号：US08040942B2
公开(公告)日：2011-10-18
申请号：US12619318
申请日：2009-11-16
申请人： Naga Bhushan , Peter J. Black , Rashid Ahmed Akbar Attar
发明人： Naga Bhushan , Peter J. Black , Rashid Ahmed Akbar Attar
IPC分类号： H04B3/46 , H04B17/00 , H04Q1/20
CPC分类号： H04W52/26 , H04L1/0002 , H04L1/0021 , H04W52/223 , H04W52/24 , H04W52/265 , H04W52/267 , H04W52/34 , H04W52/367
摘要： A method of detecting an outage includes determining at a source of data a quality metric of a link over which data is to be transmitted, modifying the quality metric by a quality metric margin, and declaring an outage event when power required for transmission of a reference signal exceeds power required for transmission of the reference signal determined form the modified quality metric. An apparatus for detecting an outage includes means for determining at a source of data a quality metric of a link over which data is to be transmitted, means for modifying the quality metric by a quality metric margin, means for determining a maximum rate of data in accordance with said modified quality metric, and means for declaring an outage event when power required for transmission of data at the maximum rate of data exceeds maximum allowable transmission power.
摘要翻译：检测中断的方法包括在数据源处确定要发送数据的链路的质量度量，通过质量度量余量修改质量度量，以及在发送参考所需的功率时声明中断事件信号超过由修改的质量度量确定的参考信号传输所需的功率。用于检测中断的装置包括用于在数据源处确定要发送数据的链路的质量度量的装置，用于通过质量度量余量修改质量度量的装置，用于确定质量度量的最大速率的装置根据所述修改的质量度量，以及当以最大数据速率传输数据所需的功率超过最大允许传输功率时，用于声明中断事件的装置。

52. 发明申请

US20110134824A1 SYNCHRONIZED BROADCAST/MULTICAST COMMUNICATION 有权
公开(公告)号：US20110134824A1
公开(公告)日：2011-06-09
申请号：US12985331
申请日：2011-01-05
申请人： Matthew S. Grob , Peter J. Black , Srikant Jayaraman , Paul E. Jacobs
发明人： Matthew S. Grob , Peter J. Black , Srikant Jayaraman , Paul E. Jacobs
IPC分类号： H04W4/06
CPC分类号： H04L5/026 , H04L27/2607
摘要： Synchronized broadcast transmits a same broadcast content using a same waveform from multiple transmitters. Transmitters each apply a same spreading code for broadcast transmissions. In a spread-spectrum communication system having a time division multiplexed forward link, a synchronized broadcast transmission is inserted into a broadcast slot. One embodiment employs an Orthogonal Frequency Divisional Multiplex (OFDM) waveform for the synchronized broadcast. An OFDM receiver is then used to process the received synchronized broadcast transmission. An alternate embodiment implements a broadcast Pseudo-random Noise (PN) code for use by multiple transmitters. An equalizer is then employed to estimate the synchronized broadcast transmission.

53. 发明申请

US20110026497A1 MULTIPLEXING ON THE REVERSE LINK FEEDBACKS FOR MULTIPLE FORWARD LINK FREQUENCIES 有权
标题翻译：针对多个前向链路频率的反向链路反馈进行多路复用
公开(公告)号：US20110026497A1
公开(公告)日：2011-02-03
申请号：US12906378
申请日：2010-10-18
申请人： Ramin Rezaiifar , Parag Agashe , Peter J. Black
发明人： Ramin Rezaiifar , Parag Agashe , Peter J. Black
IPC分类号： H04W72/04
CPC分类号： H04W72/0466 , G11B5/40 , G11B5/8404 , H04J13/0003
摘要： The present patent application comprises a method and apparatus for multiplexing reverse link feedback channels on a single reverse link frequency supporting multiple forward link frequencies for forward link channels, comprising assigning the reverse link frequency to a mobile station, assigning one or more of the forward link frequencies to the reverse link frequency, and code division multiplexing a plurality of the reverse link feedback channels on the reverse link frequency
摘要翻译：本专利申请包括用于在支持前向链路信道的多个前向链路频率的单个反向链路频率上复用反向链路反馈信道的方法和装置，包括将反向链路频率分配给移动站，分配一个或多个前向链路频率到反向链路频率，并且在反向链路频率上对多个反向链路反馈信道进行码分复用

54. 发明授权

US07848298B2 De-coupling forward and reverse link assignment for multi-carrier wireless communication systems 有权
标题翻译：多载波无线通信系统的去耦合前向和反向链路分配
公开(公告)号：US07848298B2
公开(公告)日：2010-12-07
申请号：US11190107
申请日：2005-07-25
申请人： Rashid A. Attar , Peter J. Black , Naga Bhushan
发明人： Rashid A. Attar , Peter J. Black , Naga Bhushan
IPC分类号： H04B7/216
CPC分类号： H04W28/18
摘要： A method and system for de-coupling forward and reverse link assignment for multi-carrier wireless communication systems. A method may assign two or more forward link code division multiple access (CDMA) carriers to transmit data from a base station to an access terminal; assign one or more reverse link CDMA carriers to transmit data from the access terminal to the base station; and limit reverse link overhead transmissions corresponding to the two or more forward link CDMA carriers.
摘要翻译：一种用于解耦多载波无线通信系统的前向和反向链路分配的方法和系统。方法可以分配两个或更多个前向链路码分多址（CDMA）载波，以将数据从基站发送到接入终端; 分配一个或多个反向链路CDMA载波以将数据从接入终端发送到基站; 并且限制对应于两个或更多个前向链路CDMA载波的反向链路开销传输。

55. 发明授权

US07742447B2 Method and apparatus for performing acquisition in power save mode for wireless communication systems 有权
标题翻译：用于在无线通信系统的节电模式下进行采集的方法和装置
公开(公告)号：US07742447B2
公开(公告)日：2010-06-22
申请号：US11153641
申请日：2005-06-14
申请人： Abhay A. Joshi , James A. Hutchison , Peter J. Black , Simon Turner , Thunyachate Ekvetchavit
发明人： Abhay A. Joshi , James A. Hutchison , Peter J. Black , Simon Turner , Thunyachate Ekvetchavit
IPC分类号： H04Q7/00
CPC分类号： H04W48/18 , H04W88/06 , Y02D70/1224
摘要： Techniques to efficiently attempt acquisition of a packet data system (e.g., an IS-856 system). If a terminal has acquired one or more channels in a voice/data system (e.g., an IS-2000 system), then it can attempt acquisition on channels in the packet data system that are co-located with the acquired channels in the voice/data system. Multiple acquisition modes may be used, and on-going acquisition attempts on the co-located channels may be performed using one acquisition mode at a time in order to reduce power consumption. Acquisition attempts may be performed in a “ping-pong” manner to improve the likelihood of acquisition. For a ping-pong search, an acquisition attempt is made on the most recently acquired channel prior to an acquisition attempt on each of the remaining channels. Received signal strength estimates may also be obtained for selected channels and may be used to determine whether or not to attempt acquisition on these channels.
摘要翻译：有效地尝试采集分组数据系统（例如，IS-856系统）的技术。如果终端已经在语音/数据系统（例如，IS-2000系统）中获取了一个或多个信道，则它可以尝试在分组数据系统中与语音/数据系统中所获取的信道共同位置的信道上的采集，数据系统可以使用多个采集模式，并且可以一次使用一个采集模式来执行同位置信道上的持续采集尝试，以便降低功耗。收购尝试可以以“乒乓”方式进行，以提高获取的可能性。对于乒乓搜索，在对每个剩余通道进行采集尝试之前，在最近获取的通道上进行采集尝试。也可以对所选择的信道获得接收的信号强度估计，并且可以用于确定是否尝试在这些信道上进行采集。

56. 发明申请

US20100142479A1 INTERFERENCE CANCELLATION FOR WIRELESS COMMUNICATIONS 有权
公开(公告)号：US20100142479A1
公开(公告)日：2010-06-10
申请号：US12564607
申请日：2009-09-22
申请人： Peter J. Black , Christopher G. Lott , Rashid A. Attar , Yu-Cheun Jou , Jun Ma
发明人： Peter J. Black , Christopher G. Lott , Rashid A. Attar , Yu-Cheun Jou , Jun Ma
IPC分类号： H04W36/00
CPC分类号： H04W52/54 , H04B1/7107 , H04B1/71072 , H04L1/0048 , H04L1/0052 , H04L25/03006 , H04W36/18 , H04W52/08 , H04W52/12 , H04W52/362 , H04W52/40
摘要： Techniques for improving the capacity of a wireless communications system using interference cancellation (IC). In an early decoding and IC aspect, a frame transmitted from a user to a base station may be decoded prior to the entire frame being received by the base station. The remaining portion of the frame may then be re-constructed at the base station prior to its reception, and cancelled from the receive signal to reduce the interference to frames received from other users. In a power control aspect for early decoding and IC, the power control target level at a local base station may be adjusted in response to successfully early decoding a frame, without affecting the overall outer loop power control operation. Further aspects include late decoding techniques for utilizing the IC of other users' signals to improve the probability of decoding a given user's frames, as well as techniques for traffic channel demodulation using channel re-estimation.

57. 发明申请

US20100111152A1 METHOD AND APPARATUS FOR DETERMINING AN OUTAGE IN COMMUNICATION SYSTEMS 有权
标题翻译：用于确定通信系统中的丢失的方法和装置
公开(公告)号：US20100111152A1
公开(公告)日：2010-05-06
申请号：US12619318
申请日：2009-11-16
申请人： Naga Bhushan , Peter J. Black , Rashid Ahmed Akbar Attar
发明人： Naga Bhushan , Peter J. Black , Rashid Ahmed Akbar Attar
IPC分类号： H04B17/00
CPC分类号： H04W52/26 , H04L1/0002 , H04L1/0021 , H04W52/223 , H04W52/24 , H04W52/265 , H04W52/267 , H04W52/34 , H04W52/367
摘要： A method of detecting an outage includes determining at a source of data a quality metric of a link over which data is to be transmitted, modifying the quality metric by a quality metric margin, and declaring an outage event when power required for transmission of a reference signal exceeds power required for transmission of the reference signal determined form the modified quality metric. An apparatus for detecting an outage includes means for determining at a source of data a quality metric of a link over which data is to be transmitted, means for modifying the quality metric by a quality metric margin, means for determining a maximum rate of data in accordance with said modified quality metric, and means for declaring an outage event when power required for transmission of data at the maximum rate of data exceeds maximum allowable transmission power.
摘要翻译：检测中断的方法包括在数据源处确定要发送数据的链路的质量度量，通过质量度量余量修改质量度量，以及在发送参考所需的功率时声明中断事件信号超过由修改的质量度量确定的参考信号传输所需的功率。用于检测中断的装置包括用于在数据源处确定要发送数据的链路的质量度量的装置，用于通过质量度量余量修改质量度量的装置，用于确定质量度量的最大速率的装置根据所述修改的质量度量，以及当以最大数据速率传输数据所需的功率超过最大允许传输功率时，用于声明中断事件的装置。

58. 发明授权

US07672383B2 Noise variance estimation in wireless communications for diversity combining and log-likelihood scaling 失效
标题翻译：无线通信中的噪声方差估计用于分集组合和对数似然度比例
公开(公告)号：US07672383B2
公开(公告)日：2010-03-02
申请号：US11047347
申请日：2005-01-28
申请人： June Namgoong , Hao Xu , Peter J. Black , Srikant Jayaraman
发明人： June Namgoong , Hao Xu , Peter J. Black , Srikant Jayaraman
IPC分类号： H04L27/28
CPC分类号： H04L1/20 , H04B1/1027 , H04L27/2647
摘要： Noise variance estimation in wireless communications. Noise variance estimation includes receiving a signal including an OFDM symbol having, in-band tones including in-band pilot tones, and band-edge tones including band-edge pilot tones and guard tones, estimating an effective noise variance for the in-band tones using the in-band pilot tones and channel estimates for the in-band pilot tones, and estimating an effective noise variance for the band-edge tones using the band-edge pilot tones, channel estimates for the band-edge pilot tones, and the guard tones.
摘要翻译：无线通信中的噪声方差估计。噪声方差估计包括接收包括具有包括带内导频音频的带内音调和包括带边导频音和保护音的带边音调的OFDM符号的信号，估计带内音调的有效噪声方差使用带内导频音调和频带内导频音调的估计，以及使用带边导频音估计带边音调的有效噪声方差，对带边导频音进行信道估计，以及守卫色调。

59. 发明申请

US20100039925A1 METHOD OF DETERMINING THE LOCATION OF THE FFT WINDOW AND THE DELAY SPREAD FOR THE PLATINUM BROADCAST CHANNEL ESTIMATOR 有权
标题翻译：确定FFT窗口的位置的方法和用于铂金广播信道估计器的延迟扩展
公开(公告)号：US20100039925A1
公开(公告)日：2010-02-18
申请号：US12606009
申请日：2009-10-26
申请人： Naga Bhushan , June Namgoong , Peter J. Black
发明人： Naga Bhushan , June Namgoong , Peter J. Black
IPC分类号： H04J4/00 , H04J9/00 , H04B7/216 , H04L27/28
CPC分类号： H04L27/2662 , H04L25/022 , H04L27/2665
摘要： In one embodiment, the invention comprises a channel estimation method, comprising determining a FFT window position, and calculating a delay spread. In another embodiment, the step of determining a FFT window position comprises setting an initial position of the FFT window, computing an energy for each tap, time averaging said energy for each tap, comparing an average energy of each tap with a first threshold multiplied by the average energy of all taps, comparing the average energy of each tap with a second threshold multiplied by a maximum average energy in alias components, updating the set of paths if the average energy of the tap is greater than said second threshold multiplied by the maximum average energy in alias components; and refining the FFT window position.
摘要翻译：在一个实施例中，本发明包括信道估计方法，包括确定FFT窗口位置，并计算延迟扩展。在另一个实施例中，确定FFT窗口位置的步骤包括设置FFT窗口的初始位置，计算每个抽头的能量，对每个抽头的所述能量进行平均的时间，将每个抽头的平均能量与乘以所有抽头的平均能量，将每个抽头的平均能量与第二阈值乘以别名分量中的最大平均能量，如果抽头的平均能量大于所述第二阈值乘以最大值，则更新该组路径别名成分中的平均能量; 并精简FFT窗口位置。

60. 发明申请

US20090303976A1 INCREASING CAPACITY IN WIRELESS COMMUNICATION 有权
标题翻译：在无线通信中增加能力
公开(公告)号：US20090303976A1
公开(公告)日：2009-12-10
申请号：US12424030
申请日：2009-04-15
申请人： Yu-Cheun Jou , Peter J. Black , Rashid Ahmed A. Attar
发明人： Yu-Cheun Jou , Peter J. Black , Rashid Ahmed A. Attar
IPC分类号： H04B7/216
CPC分类号： H04W52/44 , H04B2201/709709 , H04L1/0002 , H04L1/0025 , H04L1/0027 , H04L1/0029 , H04L1/0045 , H04L1/1607 , H04L1/1854 , H04L1/1887 , H04L2001/0092 , H04W52/58
摘要： Techniques to increase capacity in a wireless communications system. In an aspect, systematic non-transmission, or “blanking,” of minimal-rate frames transmitted in a communications system is provided. In an exemplary embodiment, eighth rate frames in a cdma2000 voice communications system are systematically substituted with null-rate frames carrying zero traffic bits. Provisions are nevertheless made for the transmission of certain designated as “critical” by, e.g., a vocoder. The receiver detects the presence of null rate or non-null rate transmissions and processes the received frames accordingly, including updating an outer loop power control only in response to non-null rate frames. Further techniques for changing the pilot transmission gating pattern to assist the receiver in detecting null rate frames are provided. In another aspect, early termination of a signal transmission over a wireless communications link is provided. In an exemplary embodiment, a base station (BS) transmits power control groups (PCG's) for a frame over a forward link (FL) to a mobile station (MS) until accurate reception of the frame is acknowledged by the MS over a reverse link (RL), possibly before all PCG's of the frame are received over the FL. Possible ACK signaling methods are defined for channels associated with a cdma2000 wireless communications system. In another exemplary embodiment, techniques for reverse link early termination are also provided.
摘要翻译：提高无线通信系统容量的技术。在一方面，提供了在通信系统中传输的最小速率帧的系统非传输或“消隐”。在示例性实施例中，cdma2000语音通信系统中的第八速率帧被系统地替换为带有零业务位的零速率帧。然而，对于由例如声码器指定为“关键”的某些设备进行了规定。接收机检测到零速率或非零速率传输的存在并相应地处理接收到的帧，包括仅响应于非空速率帧来更新外部环路功率控制。提供了用于改变导频传输门控模式以辅助接收机检测零速率帧的其它技术。在另一方面，提供了通过无线通信链路的信号传输的提前终止。在示例性实施例中，基站（BS）通过前向链路（FL）向移动站（MS）发送用于帧的功率控制组（PCG），直到MS通过反向链路确认帧的准确接收（RL），可能在帧的所有PCG之前都被接收到FL。针对与cdma2000无线通信系统相关的通道定义了可能的ACK信令方法。在另一示例性实施例中，还提供了用于反向链路提前终止的技术。

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