公开(公告)号：US20110085520A1

公开(公告)日：2011-04-14

申请号：US12614436

申请日：2009-11-08

申请人： Yu-Cheun Jou ,  Rashid A. Attar ,  Peter J. Black

发明人： Yu-Cheun Jou ,  Rashid A. Attar ,  Peter J. Black

IPC分类号： H04B7/216 ,  H04B15/00

CPC分类号： H04B1/7107 ,  H04B1/10

摘要： Disclosed are methods and apparatus for interference cancellation in a wireless communication system. In particular, the disclosed methods and apparatus provide for interference cancellation in a wireless device, including extending linear interference cancellation techniques, such as quasi-linear interference cancellation (QLIC), in the wireless device to a first orthogonal set, which may be a first quasi orthogonal function (QOF) set for a cdma2000 system to cancel interference from that set upon another desired QOF set. QLIC may also be extended to cancellation of signals from non-intended base stations as well. Accordingly, the present methods and apparatus afford reduced interference through QLIC by canceling signals due to either undesired QOF sets or non-intended base stations, which in turn results in an increase in forward link capacity.

摘要翻译： 公开了一种用于无线通信系统中的干扰消除的方法和装置。 具体地，所公开的方法和装置提供无线设备中的干扰消除，包括将无线设备中的线性干扰消除技术（诸如准线性干扰消除（QLIC））扩展到第一正交集合，其可以是第一正交集合 为cdma2000系统设置的准正交函数（QOF），以消除来自该组的另一个所需QOF集的干扰。 也可以将QLIC扩展到从非预定基站消除信号。 因此，本方法和装置通过消除由于不期望的QOF组或非预期基站导致的信号，通过QLIC降低了干扰，这又导致前向链路容量的增加。

公开(公告)号：US20100061496A1

公开(公告)日：2010-03-11

申请号：US12564633

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： H04B1/10

CPC分类号： H04L25/0224 ,  H04B1/7107 ,  H04B2201/70701 ,  H04L25/0204 ,  H04L25/0228 ,  H04W52/36 ,  H04W52/48

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.

摘要翻译： 使用干扰消除（IC）来提高无线通信系统容量的技术。 在早期的解码和IC方面，可以在从基站接收的整个帧之前对从用户发送到基站的帧进行解码。 帧的剩余部分然后可以在其接收之前在基站重新构建，并且从接收信号中取消，以减少对从其他用户接收到的帧的干扰。 在用于早期解码和IC的功率控制方面，本地基站的功率控制目标电平可以响应成功地早期解码帧来调整，而不影响整个外环功率控制操作。 其他方面包括用于利用其他用户信号的IC来提高对给定用户的帧进行解码的概率的后期解码技术，以及使用信道重新估计的业务信道解调技术。

公开(公告)号：US08611305B2

公开(公告)日：2013-12-17

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： H04W36/14

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.

公开(公告)号：US08594252B2

公开(公告)日：2013-11-26

申请号：US12564633

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： H04L1/00 ,  H04L27/28

CPC分类号： H04L25/0224 ,  H04B1/7107 ,  H04B2201/70701 ,  H04L25/0204 ,  H04L25/0228 ,  H04W52/36 ,  H04W52/48

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.

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。

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.

公开(公告)号：US08854944B2

公开(公告)日：2014-10-07

申请号：US12614436

申请日：2009-11-08

申请人： Yu-Cheun Jou ,  Rashid A. Attar ,  Peter J. Black

发明人： Yu-Cheun Jou ,  Rashid A. Attar ,  Peter J. Black

IPC分类号： H04B1/10 ,  H04B1/7107

CPC分类号： H04B1/7107 ,  H04B1/10

摘要： Disclosed are methods and apparatus for interference cancellation in a wireless communication system. In particular, the disclosed methods and apparatus provide for interference cancellation in a wireless device, including extending linear interference cancellation techniques, such as quasi-linear interference cancellation (QLIC), in the wireless device to a first orthogonal set, which may be a first quasi orthogonal function (QOF) set for a cdma2000 system to cancel interference from that set upon another desired QOF set. QLIC may also be extended to cancellation of signals from non-intended base stations as well. Accordingly, the present methods and apparatus afford reduced interference through QLIC by canceling signals due to either undesired QOF sets or non-intended base stations, which in turn results in an increase in forward link capacity.

摘要翻译： 公开了一种用于无线通信系统中的干扰消除的方法和装置。 具体地，所公开的方法和装置提供无线设备中的干扰消除，包括将无线设备中的线性干扰消除技术（诸如准线性干扰消除（QLIC））扩展到第一正交集合，其可以是第一正交集合 为cdma2000系统设置的准正交函数（QOF），以消除来自该组的另一个所需QOF集的干扰。 也可以将QLIC扩展到从非预定基站消除信号。 因此，本方法和装置通过消除由于不期望的QOF组或非预期基站导致的信号，通过QLIC降低了干扰，这又导致前向链路容量的增加。

公开(公告)号：US09408165B2

公开(公告)日：2016-08-02

申请号：US12424019

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： H04L12/26 ,  H04W52/44 ,  H04L1/18 ,  H04W52/58 ,  H04L1/16 ,  H04L1/00

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。

公开(公告)号：US09078269B2

公开(公告)日：2015-07-07

申请号：US12212622

申请日：2008-09-17

申请人： Mehmet Yavuz ,  Sanjiv Nanda ,  Peter J. Black ,  Bibhu Mohanty

发明人： Mehmet Yavuz ,  Sanjiv Nanda ,  Peter J. Black ,  Bibhu Mohanty

IPC分类号： H04W4/00 ,  H04W72/08 ,  H04W52/24 ,  H04W48/08 ,  H04W72/04

CPC分类号： H04W72/082 ,  H04W48/08 ,  H04W52/244 ,  H04W72/0406

摘要： Interference that occurs during wireless communication may be managed through the use of fractional reuse and other techniques. In some aspects fractional reuse may relate to HARQ interlaces, portions of a timeslot, frequency spectrum, and spreading codes. Interference may be managed through the use of a transmit power profile and/or an attenuation profile. Interference also may be managed through the use of power management-related techniques.

摘要翻译： 可以通过使用分数重用和其他技术来管理在无线通信期间发生的干扰。 在某些方面，分数重用可涉及HARQ交错，时隙的一部分，频谱和扩展码。 可以通过使用发射功率分布和/或衰减分布来管理干扰。 干扰也可以通过使用与电源管理相关的技术进行管理。

公开(公告)号：US08983480B2

公开(公告)日：2015-03-17

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 ,  H04J13/00 ,  G11B5/40 ,  G11B5/84

CPC分类号： H04W72/0466 ,  G11B5/40 ,  G11B5/8404 ,  H04J13/0003

摘要： 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 is provided. The design includes 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： 提供一种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。 该设计包括将反向链路频率分配给移动台，将一个或多个前向链路频率分配给反向链路频率，以及对反向链路频率上的多个反向链路反馈信道进行码分复用。