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131. 发明授权

US08331465B2 Adaptive two-dimensional channel interpolation 有权
标题翻译：自适应二维信道插值
公开(公告)号：US08331465B2
公开(公告)日：2012-12-11
申请号：US12064566
申请日：2006-08-22
申请人： Jianglei Ma , Ming Jia , Hua Xu , Wen Tong , Peiying Zhu , Dong-Sheng Yu , Hang Zhang
发明人： Jianglei Ma , Ming Jia , Hua Xu , Wen Tong , Peiying Zhu , Dong-Sheng Yu , Hang Zhang
IPC分类号： H04K1/10
CPC分类号： H04L27/2611 , H04B7/06 , H04B7/08 , H04L5/0007 , H04L5/0023 , H04L25/0226 , H04L25/0232 , H04L27/2626 , H04L27/2647
摘要： A method and apparatus for improving channel estimation within an OFDM communication system. Channel estimation in OFDM is usually performed with the aid of pilot symbols. The pilot symbols are typically spaced in time and frequency. The set of frequencies and times at which pilot symbols are inserted is referred to as a pilot pattern. In some cases, the pilot pattern is a diagonal-shaped lattice, either regular or irregular. The method first interpolates in the direction of larger coherence (time or frequency). Using these measurements, the density of pilot symbols in the direction of faster change will be increased thereby improving channel estimation without increasing overhead. As such, the results of the first interpolating step can then be used to assist the interpolation in the dimension of smaller coherence (time or frequency).
摘要翻译：一种用于改善OFDM通信系统内的信道估计的方法和装置。 OFDM中的信道估计通常借助于导频符号来执行。导频符号通常在时间和频率上间隔开。将导频符号插入的频率和时间的集合称为导频模式。在一些情况下，导频图案是对角线形格子，规则的或不规则的。该方法首先在较大相干性（时间或频率）的方向内插。使用这些测量，导频符号在更快变化方向上的密度将增加，从而改善信道估计而不增加开销。因此，第一内插步骤的结果然后可以用于辅助尺寸较小的相干性（时间或频率）的内插。

132. 发明申请

US20120307930A1 Scattered Pilot Pattern And Channel Estimation Method For MIMO-OFDM Systems 有权
标题翻译：用于MIMO-OFDM系统的分散导频模式和信道估计方法
公开(公告)号：US20120307930A1
公开(公告)日：2012-12-06
申请号：US13586660
申请日：2012-08-15
申请人： Jianglei Ma , Ming Jia , Peiying Zhu , Wen Tong
发明人： Jianglei Ma , Ming Jia , Peiying Zhu , Wen Tong
IPC分类号： H04B7/04
CPC分类号： H04L27/2613 , H04B7/04 , H04B7/0413 , H04B7/0684 , H04L1/0618 , H04L5/0023 , H04L5/0048 , H04L25/0204 , H04L25/022 , H04L25/0234 , H04L25/0244 , H04L27/2602 , H04L27/2627 , H04W52/42
摘要： A method and apparatus are provided for reducing the number of pilot symbols within a MIMO-OFDM communication system, and for improving channel estimation within such a system. For each transmitting antenna in an OFDM transmitter, pilot symbols are encoded so as to be unique to the transmitting antenna. The encoded pilot symbols are then inserted into an OFDM frame to form a diamond lattice, the diamond lattices for the different transmitting antennae using the same frequencies but being offset from each other by a single symbol in the time domain. At the OFDM receiver, a channel response is estimated for a symbol central to each diamond of the diamond lattice using a two-dimensional interpolation. The estimated channel responses are smoothed in the frequency domain. The channel responses of remaining symbols are then estimated by interpolation in the frequency domain.
摘要翻译：提供了一种用于减少MIMO-OFDM通信系统内的导频符号的数量并改善这种系统内的信道估计的方法和装置。对于OFDM发射机中的每个发射天线，导频符号被编码为对于发射天线是唯一的。然后将编码的导频符号插入到OFDM帧中以形成菱形晶格，使用相同频率的不同发射天线的菱形晶格，但是在时域中通过单个符号彼此偏移。在OFDM接收机处，使用二维插值来估计针对钻石晶格的每个菱形的中心的符号的信道响应。估计的信道响应在频域中被平滑化。然后通过在频域中的内插来估计剩余符号的信道响应。

133. 发明授权

US08320826B2 Power control at a relay station in a wireless network 有权
标题翻译：在无线网络中的中继站进行功率控制
公开(公告)号：US08320826B2
公开(公告)日：2012-11-27
申请号：US12197767
申请日：2008-08-25
申请人： Nimal Senarath , David Steer , Derek Yu , Hang Zhang , Peiying Zhu , Wen Tong , Israfil Bahceci
发明人： Nimal Senarath , David Steer , Derek Yu , Hang Zhang , Peiying Zhu , Wen Tong , Israfil Bahceci
IPC分类号： H04B3/36
CPC分类号： H04B7/2606 , H04B7/15535
摘要： A wireless network includes a base station and a relay station for extending wireless coverage of the base station. Downlink data is sent by the base station and relayed through the relay station to a mobile station, where the downlink data is associated with a preamble that is sent directly from the base station to the mobile station. A transmit power of the relay station is adjusted for transmitting the downlink data from the relay station to the mobile station to reduce a difference between a first power level of the preamble received at the mobile station and a second power level of the downlink data received at the mobile station. The uplink transmit power of the mobile station for the data sent to the relay station is adjusted to compensate for the difference in path loss from mobile station to base station and mobile station to relay station and to compensate for the difference in noise_plus_interference level at relay station compared to that of the base station.
摘要翻译：无线网络包括用于扩展基站的无线覆盖的基站和中继站。下行链路数据由基站发送并通过中继站中继至移动台，移动台与下行链路数据相关联，前导码直接从基站发送到移动台。调整中继站的发射功率，以将下行链路数据从中继站发送到移动台，以减少在移动台处接收到的前导码的第一功率电平与第一功率电平之间的差异，移动台。调整发送到中继站的数据的移动站的上行发送功率，以补偿从移动站到基站和移动站到中继站的路径损耗差异，并补偿中继站的noise_plus_interference等级的差异与基站相比。

134. 发明授权

US08300570B2 Ranging regions for wireless communication relay stations 有权
标题翻译：无线通信中继站测距区域
公开(公告)号：US08300570B2
公开(公告)日：2012-10-30
申请号：US12299259
申请日：2007-06-01
申请人： Hang Zhang , Jianglei Ma , Peiying Zhu , Wen Tong
发明人： Hang Zhang , Jianglei Ma , Peiying Zhu , Wen Tong
IPC分类号： H04B7/14
CPC分类号： H04B7/15542 , H04W88/04 , H04W92/10
摘要： One embodiment of the present invention provides a unique ranging technique in wireless communication environments that employ relay stations associated with a base station. Each relay station, and optionally the base station itself, can be allocated a unique ranging region having unique ranging resources that may be used by a mobile station to initiate a ranging function with the corresponding relay station or base station.
摘要翻译：本发明的一个实施例提供了采用与基站相关联的中继站的无线通信环境中的唯一测距技术。每个中继站以及可选的基站本身都可以被分配唯一的测距区域，该测距区域具有唯一的测距资源，该测距资源可以由移动台用于与对应的中继站或基站发起测距功能。

135. 发明授权

US08284852B2 Multi-user MIMO systems and methods 有权
标题翻译：多用户MIMO系统和方法
公开(公告)号：US08284852B2
公开(公告)日：2012-10-09
申请号：US13251394
申请日：2011-10-03
申请人： Wen Tong , Ming Jia , Jianming Wu , Dong-Sheng Yu , Peiying Zhu
发明人： Wen Tong , Ming Jia , Jianming Wu , Dong-Sheng Yu , Peiying Zhu
IPC分类号： H04L27/28
CPC分类号： H04W72/085 , H04B7/0452 , H04B7/0478 , H04B7/0628 , H04B7/063 , H04B7/0632 , H04B7/0673 , H04B7/0697 , H04L1/0003 , H04L1/0009 , H04L1/0015 , H04L1/0026 , H04L1/0675 , H04L5/0023 , H04L5/0057 , H04W24/08 , H04W72/06
摘要： A method and system are provided for scheduling data transmission in a Multiple-Input Multiple-Output (MIMO) system. The MIMO system may comprise at least one MIMO transmitter and at least one MIMO receiver. Feedback from one or more receivers may be used by a transmitter to improve quality, capacity, and scheduling in MIMO communication systems. The method may include generating or receiving information pertaining to a MIMO channel metric and information pertaining to a Channel Quality Indicator (CQI) in respect of a transmitted signal; and sending a next transmission to a receiver using a MIMO mode selected in accordance with the information pertaining to the MIMO channel metric, and an adaptive coding and modulation selected in accordance with the information pertaining to the CQI.
摘要翻译：提供了一种用于在多输入多输出（MIMO）系统中调度数据传输的方法和系统。 MIMO系统可以包括至少一个MIMO发射机和至少一个MIMO接收机。来自一个或多个接收机的反馈可以被发射机用于改善MIMO通信系统中的质量，容量和调度。该方法可以包括产生或接收关于MIMO信道度量的信息和关于发射信号的与信道质量指示符（CQI）有关的信息; 以及使用根据与所述MIMO信道度量有关的信息选择的MIMO模式以及根据与所述CQI有关的信息选择的自适应编码和调制，向接收机发送下一个传输。

136. 发明授权

US08279836B2 Soft handoff in OFDMA system 有权
公开(公告)号：US08279836B2
公开(公告)日：2012-10-02
申请号：US13221621
申请日：2011-08-30
申请人： Jianglei Ma , Wen Tong , Ming Jia , Peiying Zhu , Mo-Han Fong , Hang Zhang
发明人： Jianglei Ma , Wen Tong , Ming Jia , Peiying Zhu , Mo-Han Fong , Hang Zhang
IPC分类号： H04W36/00
CPC分类号： H04W36/18 , H04B7/022 , H04B7/0691
摘要： Soft handoff in an OFDMA system is disclosed. If the pilot signal strength for a base station exceeds the defined threshold, the base station is added to an active set list. Subcarriers in a plurality of orthogonal frequency division multiplexing (OFDM) symbols are divided and allocated into subchannels. The OFDM symbols are divided and multiplexed. A soft handoff zone with a first dimension of the subchannels and a second dimension of the divided and multiplexed OFDM symbols is defined. The soft handoff zone has subcarriers with a subchannel definition, for example, an identical permutation.

137. 发明授权

US08264996B2 Signalling channel and radio system for power saving in wireless devices 有权
标题翻译：用于无线设备节能的信令通道和无线电系统
公开(公告)号：US08264996B2
公开(公告)日：2012-09-11
申请号：US12684540
申请日：2010-01-08
申请人： Shiquan Wu , Wen Tong , Claude Royer , Edward Sich
发明人： Shiquan Wu , Wen Tong , Claude Royer , Edward Sich
IPC分类号： G08C17/00
CPC分类号： H04W52/0216 , H04B1/7103 , H04B2201/70714 , H04L5/0016 , H04L27/2618 , H04L27/2647 , H04L27/265 , H04W52/0229 , Y02D70/122 , Y02D70/1242
摘要： Wireless devices, transmitters, systems and methods are provided that have a narrow band signalling channel and a wide band channel, for example an OFDM channel. In order to save power, the wireless device is nominally powered down with the exception of a receiver specific to the narrow band signalling channel. Once instructed to do so over the narrow band signalling channel, the wireless device wakes up the rest of its wide band receive circuitry.
摘要翻译：提供了具有窄带信令信道和宽带信道（例如OFDM信道）的无线设备，发射机，系统和方法。为了节省电力，除了窄带信令信道专用的接收机之外，无线设备名义上关闭电源。一旦通过窄带信令信道指示这样做，无线设备唤醒其宽带接收电路的其余部分。

138. 发明授权

US08254284B2 Hybrid ARQ schemes with soft combining in variable rate packet data applications 有权
标题翻译：混合ARQ方案在可变速率分组数据应用中具有软组合
公开(公告)号：US08254284B2
公开(公告)日：2012-08-28
申请号：US12344933
申请日：2008-12-29
申请人： Wen Tong , Leo L. Strawczynski , Shalini S. Periyalwar , Claude Royer
发明人： Wen Tong , Leo L. Strawczynski , Shalini S. Periyalwar , Claude Royer
IPC分类号： H04J3/22
CPC分类号： H04W72/0406 , H04L1/0002 , H04L1/0066 , H04L1/1816 , H04L1/1819 , H04L1/1845 , H04L5/0055 , H04W28/04 , Y02D50/10
摘要： A system and method for transmitting high speed data on fixed rate and for variable rate channels. The system and method provides the flexibility of adjusting the data rate, the coding rate, and the nature of individual retransmissions. Further, the system and method supports partial soft combining of retransmitted data with previously transmitted data, supports parity bit selection for successive retransmissions, and supports various combinations of data rate variations, coding rate variations, and partial data transmissions.
摘要翻译：用于以固定速率和可变速率信道发送高速数据的系统和方法。该系统和方法提供了调整数据速率，编码率和个别重传性质的灵活性。此外，该系统和方法支持重发数据与先前传输的数据的部分软组合，支持连续重发的奇偶校验位选择，并支持数据速率变化，编码速率变化和部分数据传输的各种组合。

139. 发明授权

US08165094B2 Soft handoff in OFDMA system 有权
标题翻译： OFDMA系统中的软切换
公开(公告)号：US08165094B2
公开(公告)日：2012-04-24
申请号：US13221601
申请日：2011-08-30
申请人： Jianglei Ma , Wen Tong , Ming Jia , Peiying Zhu , Mo-Han Fong , Hang Zhang
发明人： Jianglei Ma , Wen Tong , Ming Jia , Peiying Zhu , Mo-Han Fong , Hang Zhang
IPC分类号： H04W36/00
CPC分类号： H04W36/18 , H04B7/022 , H04B7/0691
摘要： Soft handoff in an OFDMA system is disclosed. If the pilot signal strength for a base station exceeds the defined threshold, the base station is added to an active set list. Subcarriers in a plurality of orthogonal frequency division multiplexing (OFDM) symbols are divided and allocated into subchannels. The OFDM symbols are divided and multiplexed. A soft handoff zone with a first dimension of the subchannels and a second dimension of the divided and multiplexed OFDM symbols is defined. The soft handoff zone has subcarriers with a subchannel definition, for example, an identical permutation.
摘要翻译：披露了OFDMA系统中的软切换。如果基站的导频信号强度超过定义的阈值，则将基站添加到活动集列表中。多个正交频分复用（OFDM）符号中的子载波被划分并分配给子信道。 OFDM符号被分割和多路复用。定义了具有子信道的第一维度和分割和多路复用的OFDM符号的第二维度的软切换区域。软切换区具有子信道定义的子载波，例如相同的置换。

140. 发明授权

US08165009B2 Adaptive scheduling of voice traffic in a multi-carrier communication environment 有权
标题翻译：多载波通信环境中语音流量的自适应调度
公开(公告)号：US08165009B2
公开(公告)日：2012-04-24
申请号：US10599103
申请日：2005-03-24
申请人： Jianming Wu , Wen Tong , Peiying Zhu
发明人： Jianming Wu , Wen Tong , Peiying Zhu
IPC分类号： H04J11/00
CPC分类号： H04W72/12 , H04L1/0009 , H04L1/08 , H04L1/1867 , H04L5/0007 , H04L5/0037 , H04L5/006 , H04L5/0064 , H04W28/26 , H04W72/085 , H04W72/1263
摘要： The present invention provides a technique for scheduling data, and in particular, scheduling real-time or voice data for transmissions during a transmit time interval in a multi-carrier communication environment. For each transmit time interval, channel condition indicia for multiple users is determined, and an iterative scheduling process is then implemented based in part on the channel condition indicia. The iterative scheduling initially preassigns select tones for each of the remaining users that have not been permanently assigned tones for the given transmit time interval. Next, the remaining user having the least favorable channel conditions is selected as an active user. The newly selected active user is then permanently assigned the select tones that were initially pre-assigned to that particular user. The permanently assigned tones are removed from consideration, and the process is repeated until all the remaining users are permanently assigned unique tones for scheduling.
摘要翻译：本发明提供了一种用于调度数据的技术，特别是在多载波通信环境中的传输时间间隔期间调度实时或话音数据以进行传输。对于每个发送时间间隔，确定多个用户的信道条件标记，并且部分地基于信道条件标记来实现迭代调度过程。迭代调度最初预分配对于给定发送时间间隔未被永久分配的音调的剩余用户中的每一个选择音调。接下来，选择具有最不利条件的剩余用户作为活动用户。然后，将新选择的活动用户永久分配给最初预分配给该特定用户的选择音。从考虑中删除永久分配的音调，并重复该过程，直到所有剩余用户被永久分配唯一的音调进行调度。

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