专利快速检索-快速检索全球专利，免费商用专利数据库-IPRDB

1. 发明授权

US08243690B2 Bandwidth allocation base station and method for allocating uplink bandwidth using SDMA 有权
标题翻译：带宽分配基站和使用SDMA分配上行带宽的方法
公开(公告)号：US08243690B2
公开(公告)日：2012-08-14
申请号：US12169731
申请日：2008-07-09
申请人： Qinghua Li , Ozgur Oyman , Wendy C. Wong , Hujun Yin , Xintian E Lin
发明人： Qinghua Li , Ozgur Oyman , Wendy C. Wong , Hujun Yin , Xintian E Lin
IPC分类号： H04W4/00
CPC分类号： H04L5/0053 , H04L5/0026 , H04L5/0039 , H04L5/0044 , H04L5/0051 , H04L5/0062 , H04L5/0094
摘要： Embodiments of a base station and methods for allocating uplink bandwidth using SDMA are generally described herein. In some embodiments, uplink bandwidth request messages are received on a bandwidth request contention channel from one or more subscriber stations. The uplink bandwidth request messages are generated by the subscriber stations by modulating pilot subcarriers of a randomly selected disjoint pilot pattern with a randomly selected orthogonal sequence. The base station allocates uplink bandwidth to the subscriber stations when the uplink bandwidth request messages are successfully detected and decoded. The base station uses an SDMA technique to determine channel responses based on the orthogonal sequences to detect and decode the uplink bandwidth request messages.
摘要翻译：基站的实施例和使用SDMA分配上行链路带宽的方法在这里通常被描述。在一些实施例中，在来自一个或多个用户站的带宽请求争用信道上接收上行链路带宽请求消息。上行链路带宽请求消息由用户站通过随机选择的正交序列调制随机选择的不相交导频模式的导频子载波来生成。当上行链路带宽请求消息成功检测和解码时，基站向用户站分配上行带宽。基站使用SDMA技术来确定基于正交序列的信道响应以检测和解码上行链路带宽请求消息。

2. 发明授权

US09001759B2 Base station and method for resource allocation in a 3GPP LTE network 有权
标题翻译：用于3GPP LTE网络中的资源分配的基站和方法
公开(公告)号：US09001759B2
公开(公告)日：2015-04-07
申请号：US13558964
申请日：2012-07-26
申请人： Qinghua Li , Ozgur Oyman , Wendy C. Wong , Hujun Yin , Xintian E Lin
发明人： Qinghua Li , Ozgur Oyman , Wendy C. Wong , Hujun Yin , Xintian E Lin
IPC分类号： H04W4/00 , H04L5/00
CPC分类号： H04L5/0053 , H04L5/0026 , H04L5/0039 , H04L5/0044 , H04L5/0051 , H04L5/0062 , H04L5/0094
摘要： Embodiments of a base station and methods for allocating uplink bandwidth using SDMA are generally described herein. In some embodiments, uplink bandwidth request messages are received on a bandwidth request contention channel from one or more subscriber stations. The uplink bandwidth request messages are generated by the subscriber stations by modulating pilot subcarriers of a randomly selected disjoint pilot pattern with a randomly selected orthogonal sequence. The base station allocates uplink bandwidth to the subscriber stations when the uplink bandwidth request messages are successfully detected and decoded. The base station uses an SDMA technique to determine channel responses based on the orthogonal sequences to detect and decode the uplink bandwidth request messages.
摘要翻译：基站的实施例和使用SDMA分配上行链路带宽的方法在这里通常被描述。在一些实施例中，在来自一个或多个用户站的带宽请求争用信道上接收上行链路带宽请求消息。上行链路带宽请求消息由用户站通过随机选择的正交序列调制随机选择的不相交导频模式的导频子载波来生成。当上行链路带宽请求消息成功检测和解码时，基站向用户站分配上行带宽。基站使用SDMA技术来确定基于正交序列的信道响应以检测和解码上行链路带宽请求消息。

3. 发明授权

US08472467B2 Wireless device and methods for opportunistic scheduling in a contention-based wireless network 有权
标题翻译：基于竞争的无线网络中的机会调度的无线设备和方法
公开(公告)号：US08472467B2
公开(公告)日：2013-06-25
申请号：US12491381
申请日：2009-06-25
申请人： Ozgur Oyman , Qinghua Li , Xintian E Lin
发明人： Ozgur Oyman , Qinghua Li , Xintian E Lin
IPC分类号： H04L12/413
CPC分类号： H04W74/085
摘要： Embodiments of a wireless device and method for channel access are generally described herein. In some embodiments, the wireless device is configured to measure channel quality and set a backoff delay for channel access based on the channel quality. Shorter backoff delays are set for better channel quality and longer backoff delays are set for poorer channel quality.
摘要翻译：本文中通常描述用于信道访问的无线设备和方法的实施例。在一些实施例中，无线设备被配置为基于信道质量来测量信道质量并设置用于信道接入的回退延迟。设置较短的退避延迟以获得更好的信道质量，并为较差的信道质量设置较长的退避延迟。

4. 发明授权

US08131306B2 Wireless access network and method for allocating data subcarriers within a downlink subframe based on grouping of user stations 有权
标题翻译：无线接入网络和方法，用于基于用户站的分组在下行链路子帧内分配数据子载波
公开(公告)号：US08131306B2
公开(公告)日：2012-03-06
申请号：US11687393
申请日：2007-03-16
申请人： Minnie Ho , Qinghua Li , Xintian E Lin , Vallabhajosyula S. Somayazulu , Shilpa Talwar
发明人： Minnie Ho , Qinghua Li , Xintian E Lin , Vallabhajosyula S. Somayazulu , Shilpa Talwar
IPC分类号： H04W72/00
CPC分类号： H04W72/042 , H04B7/02 , H04L5/00 , H04W72/0453 , H04W72/048 , H04W88/08
摘要： Embodiments of a wireless access network and method for allocation time and frequency resources are generally described herein. Other embodiments may be described and claimed. In some embodiments, a base station allocates contiguous groups of data subcarriers of a downlink subframe to closed-loop user stations, and allocates the remaining data subcarriers of the downlink subframe to open-loop user stations to increase frequency diversity.
摘要翻译：本文一般地描述用于分配时间和频率资源的无线接入网络和方法的实施例。可以描述和要求保护其他实施例。在一些实施例中，基站将下行链路子帧的连续的数据子载波组分配给闭环用户站，并且将下行链路子帧的剩余数据子载波分配给开环用户站以增加频率分集。

5. 发明授权

US07649955B2 MIMO receiver and method for beamforming using CORDIC operations 有权
标题翻译： MIMO接收机和使用CORDIC操作的波束成形方法
公开(公告)号：US07649955B2
公开(公告)日：2010-01-19
申请号：US11618122
申请日：2006-12-29
申请人： Xintian E Lin , Qinghua Li , Tein Yow Yu
发明人： Xintian E Lin , Qinghua Li , Tein Yow Yu
IPC分类号： H04B7/02
CPC分类号： G06F7/4818 , G06F17/16 , H04B7/0478 , H04B7/0663 , H04L25/0248
摘要： Embodiments of a MIMO receiver and method for beamforming using CORDIC operations are generally described herein. Other embodiments may be described and claimed. In some embodiments, complex singular value decomposition (SVD) operations are performed on a channel matrix using CORDIC operations to generate vector elements of a beamforming matrix. An inner product of a first of the vector elements and each of a plurality of stored codewords is computed using CORDIC operations. A recursive dimensional reduction on the beamforming matrix is performed based on the quantized first vector element is performed using CORDIC operations. In some embodiments, the MIMO receiver includes reprogrammable CORDIC circuitry.
摘要翻译： MIMO接收机的实施例和使用CORDIC操作的波束成形的方法在这里通常被描述。可以描述和要求保护其他实施例。在一些实施例中，使用CORDIC操作在信道矩阵上执行复数奇异值分解（SVD）操作，以生成波束形成矩阵的矢量元素。使用CORDIC操作来计算第一矢量元素和多个存储码字中的每一个的内积。基于使用CORDIC操作执行量化的第一向量元素，执行波束成形矩阵的递归尺寸减小。在一些实施例中，MIMO接收机包括可编程CORDIC电路。

6. 发明授权

US07616704B2 Broadband multicarrier transmitter with subchannel frequency diversity for transmitting a plurality of spatial streams 有权
标题翻译：具有用于发送多个空间流的子信道频率分集的宽带多载波发射机
公开(公告)号：US07616704B2
公开(公告)日：2009-11-10
申请号：US11075030
申请日：2005-03-08
申请人： Qinghua Li , Xintian E Lin , Alexei V Davydov
发明人： Qinghua Li , Xintian E Lin , Alexei V Davydov
IPC分类号： H04L27/00 , H04L27/28 , H04B7/02
CPC分类号： H04B7/0669 , H04B7/0617 , H04B7/068 , H04L1/0625 , H04L5/0023 , H04L25/0204 , H04L27/0008 , H04L27/2626 , H04L27/36
摘要： A multicarrier transmitter assigns for each of a plurality of spatial channels, sets of the constellation symbols to subcarriers of each subchannel. Constellation symbol assignments to the subchannels are circularly rotated among some of the spatial channels so that subchannels use different sets of subcarriers for each spatial channel for enhanced frequency diversity.
摘要翻译：多载波发射机为每个子信道的子载波分配多个空间信道中的每个星座符号的集合。对于子信道的星座符号分配在一些空间信道中循环旋转，使得子信道对于每个空间信道使用不同的子载波集合用于增强的频率分集。

7. 发明授权

US07206550B2 Antenna subsystem calibration apparatus and methods in spatial-division multiple-access systems 有权
标题翻译：天线子系统校准装置和空分多址系统的方法
公开(公告)号：US07206550B2
公开(公告)日：2007-04-17
申请号：US10749904
申请日：2003-12-29
申请人： Qinghua Li , Xintian E Lin
发明人： Qinghua Li , Xintian E Lin
IPC分类号： H04B1/00 , H04B7/00
CPC分类号： H04B7/0619 , H04B7/0617
摘要： A wireless local area network (WLAN) includes an access point (AP), which provides communications channels to a plurality of stations. The AP supports spatial-division, multiple-access (SDMA) and accordingly includes a plurality of antenna subsystems. In order to achieve zero-forcing downlink beamforming, internal calibration procedures are occasionally performed within the AP. An internal calibration procedure includes an antenna subsystem transmitting a calibration signal. Received signals are measured at other antenna subsystems, and from these measurements, the transmit and receive chain gains are calculated for each antenna subsystem. One or more of these gains are adjusted to satisfy a primary condition, which is that the ratio of the transmit chain gain and the receive chain gain for all of the antenna subsystems are approximately equal (i.e., all of these ratios are equal to a calibration constant).
摘要翻译：无线局域网（WLAN）包括向多个站提供通信信道的接入点（AP）。 AP支持空分多址（SDMA），相应地包括多个天线子系统。为了实现迫零下行链路波束形成，AP内部偶尔执行内部校准过程。内部校准程序包括发送校准信号的天线子系统。在其他天线子系统中测量接收信号，并从这些测量中计算每个天线子系统的发射和接收链增益。调整这些增益中的一个或多个以满足主要条件，即，所有天线子系统的发射链增益和接收链增益的比率近似相等（即，所有这些比率都等于校准不变）。

8. 发明授权

US08301155B2 Base station and method for resource allocation using localized and distributed resource blocks 有权
标题翻译：使用本地化和分布式资源块进行资源分配的基站和方法
公开(公告)号：US08301155B2
公开(公告)日：2012-10-30
申请号：US13400762
申请日：2012-02-21
申请人： Minnie Ho , Qinghua Li , Xintian E Lin , Vallabhajosyula S. Somayazulu , Shilpa Talwar
发明人： Minnie Ho , Qinghua Li , Xintian E Lin , Vallabhajosyula S. Somayazulu , Shilpa Talwar
IPC分类号： H04W72/00
CPC分类号： H04W72/042 , H04B7/02 , H04L5/00 , H04W72/0453 , H04W72/048 , H04W88/08
摘要： Embodiments of a base station and method for resource allocation using localized and distributed resource blocks are generally described herein. The base station comprises processing circuitry to allocate localized resources to user stations based on receipt of channel quality information received from the user stations and to allocate distributed resource to user stations based on non-receipt of channel quality information. The base station also comprises physical layer circuitry to transmit control information on a physical channel to indicate the resources that are allocated to each scheduled user station.
摘要翻译：本文一般地描述基站的实施例和使用本地化和分布式资源块的资源分配方法。基站包括处理电路，用于基于从用户站接收的信道质量信息的接收来向用户站分配本地化的资源，并且基于未接收到信道质量信息来向用户站分配分布式资源。基站还包括用于在物理信道上发送控制信息以指示分配给每个调度的用户站的资源的物理层电路。

9. 发明授权

US08446971B2 Communication station and method for efficiently providing channel feedback for MIMO communications 有权
标题翻译：用于有效提供MIMO通信的信道反馈的通信站和方法
公开(公告)号：US08446971B2
公开(公告)日：2013-05-21
申请号：US12861685
申请日：2010-08-23
申请人： Qinghua Li , Huaning Niu , Xintian E Lin , Yuan Zhu , Thomas J. Kenney , Eldad Perahia , Honggang Li
发明人： Qinghua Li , Huaning Niu , Xintian E Lin , Yuan Zhu , Thomas J. Kenney , Eldad Perahia , Honggang Li
IPC分类号： H04L27/28
CPC分类号： H04L25/03955 , H04B7/024 , H04B7/0452 , H04B7/0478 , H04B7/0482 , H04B7/0639 , H04B7/0641 , H04B7/066 , H04L2025/03414
摘要： Embodiments of a communication station and methods for efficiently providing channel feedback for MIMO communications over an OFDM channel are generally described herein. In some embodiments, receiving stations may perform a recursive differential quantization of channel information across time and/or frequency to generate quantized differential channel feedback. The quantized differential channel feedback from each receiving station may be used by a transmitting station to precode MIMO transmissions to one or more of the receiving stations. The quantized differential channel feedback may be either a quantized differential channel matrix or a quantized differential beamforming matrix.
摘要翻译：通常在本文中描述通信站的实施例和用于在OFDM信道上有效地提供用于MIMO通信的信道反馈的方法。在一些实施例中，接收站可以在时间和/或频率上执行信道信息的递归差分量化，以产生量化的差分信道反馈。来自每个接收站的量化的差分信道反馈可以由发射站用于对接收站中的一个或多个的MIMO传输进行预编码。量化的差分信道反馈可以是量化差分信道矩阵或量化差分波束形成矩阵。

10. 发明授权

US08369790B2 Communication overhead reduction apparatus, systems, and methods 有权
公开(公告)号：US08369790B2
公开(公告)日：2013-02-05
申请号：US10751001
申请日：2003-12-30
申请人： Qinghua Li , Xintian E Lin
发明人： Qinghua Li , Xintian E Lin
IPC分类号： H04B17/00
CPC分类号： H04B7/0684 , H04B7/0417 , H04B7/0697 , H04L5/0046 , H04W52/42 , H04W56/001 , H04W84/12 , H04W84/18
摘要： An apparatus and a system, as well as a method and article, may operate to transmit a first number of training symbols corresponding to a first number of communication chains to solicit a response including a second number of training symbols corresponding to a second number of communication chains. The first and second number of communication chains may form a portion of a multiple-input, multiple-output (MIMO) system.

你已经成功收藏专利！

检索式保存成功!

IPRDB

热门服务

关于我们

友情链接

联系方式