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1. 发明授权

US08045988B2 Softer and soft handoff in an orthogonal frequency division wireless communication system 有权
标题翻译：在正交频分无线通信系统中更软和更软切换
公开(公告)号：US08045988B2
公开(公告)日：2011-10-25
申请号：US12818078
申请日：2010-06-17
申请人： Arak Sutivong , Ayman Fawzy Naguib , Dhananjay Gore , Alexei Gorokhov , Tingfang Ji
发明人： Arak Sutivong , Ayman Fawzy Naguib , Dhananjay Gore , Alexei Gorokhov , Tingfang Ji
IPC分类号： H04W36/00
CPC分类号： H04B1/713 , H04B7/022 , H04B7/0491 , H04L5/0012 , H04L5/0023 , H04L5/0048 , H04L5/006 , H04L5/0069 , H04L25/0226 , H04L27/2613 , H04W36/18 , H04W48/08
摘要： Transmission patterns for pilot symbols transmitted from a mobile station or base station are provided. The patterns may be selected according to a location of the mobile station with respect to one or more antennas are provided. In some aspects, the pattern may be selected based upon the distance between the mobile station and the one or more antennas. In other aspect, the pattern may be based upon whether the mobile station is in handoff.
摘要翻译：提供从移动台或基站发送的导频符号的传输模式。可以根据移动台相对于一个或多个天线的位置来选择模式。在一些方面，可以基于移动台与一个或多个天线之间的距离来选择该模式。在另一方面，该模式可以基于移动台是否处于切换状态。

2. 发明申请

US20070115795A1 Frequency division multiple access schemes for wireless communication 失效
标题翻译：用于无线通信的频分多址方案
公开(公告)号：US20070115795A1
公开(公告)日：2007-05-24
申请号：US11325980
申请日：2006-01-04
申请人： Dhananjay Gore , Ravi Palanki
发明人： Dhananjay Gore , Ravi Palanki
IPC分类号： H04J11/00
CPC分类号： H04B7/2621 , H04B1/00 , H04B1/0003 , H04L5/0007 , H04L27/2602 , H04L27/2607 , H04L27/2614
摘要： Techniques for transmitting data using single-carrier frequency division multiple access (SC-FDMA) multiplexing schemes are described. In one aspect, data is sent on sets of adjacent subbands that are offset from one another to achieve frequency diversity. A terminal may be assigned a set of N adjacent subbands that is offset by less than N (e.g., N/2) subbands from another set of N adjacent subbands assigned to another terminal and would then observe interference on only subbands that overlap. In another aspect, a multi-carrier transmission symbol is generated with multi-carrier SC-FDMA. Multiple waveforms carrying modulation symbols in the time domain on multiple sets of subbands are generated. The multiple waveforms are pre-processed (e.g., cyclically delayed by different amounts) to obtain pre-processed waveforms, which are combined (e.g., added) to obtain a composite waveform. A cyclic prefix is appended to the composite waveform to generate the multi-carrier transmission symbol.
摘要翻译：描述了使用单载波频分多址（SC-FDMA）复用方案发送数据的技术。在一个方面，在彼此偏移的相邻子带的集合上发送数据以实现频率分集。可以向终端分配一组N个相邻子带，该组N个相邻子带从分配给另一终端的N个相邻子带的另一组偏移小于N（例如N / 2）个子带，然后将仅对重叠的子带观察到干扰。在另一方面，使用多载波SC-FDMA生成多载波传输符号。产生在多个子带组上的时域中承载调制符号的多个波形。多个波形被预处理（例如，循环地延迟不同的量）以获得预处理的波形，其被组合（例如，添加）以获得复合波形。循环前缀附加到复合波形以产生多载波传输符号。

3. 发明申请

US20070098099A1 PRECODING FOR SEGMENT SENSITIVE SCHEDULING IN WIRELESS COMMUNICATION SYSTEMS 有权
标题翻译：无线通信系统中分段敏感调度的预测
公开(公告)号：US20070098099A1
公开(公告)日：2007-05-03
申请号：US11553870
申请日：2006-10-27
申请人： Dhananjay Gore , Hemanth Sampath , Jibing Wang , Tamer Kadous , Gwendolyn Barriac
发明人： Dhananjay Gore , Hemanth Sampath , Jibing Wang , Tamer Kadous , Gwendolyn Barriac
IPC分类号： H04K1/10 , H04L1/02
CPC分类号： H04B7/0456 , H04L1/0016 , H04L1/0026 , H04L1/0675 , H04L5/023 , H04L25/0206 , H04L27/2602 , H04L27/2608
摘要： Techniques to enhance the performance in a wireless communication system using segments called subbands and using precoding are shown. According to one aspect, the bandwidth for transmission to an access terminal is constrained to a preferred bandwidth which is less than the bandwidth available for transmission to an access terminal and precoding information related to the subcarriers within the constrained bandwidth is provided to a transmitter. The precoding information related to the subcarriers within a constrained bandwidth provides feedback about the forward link channel properties relative to different subbands and may be fed back on a channel associated with the bandwidth.
摘要翻译：示出了使用称为子带并使用预编码的段来增强在无线通信系统中的性能的技术。根据一个方面，用于传输到接入终端的带宽被限制到比可用于传输到接入终端的带宽的优选带宽，并且将与受限带宽内的子载波相关的预编码信息提供给发射机。与受限带宽内的子载波相关的预编码信息提供关于相对于不同子带的前向链路信道属性的反馈，并且可以在与带宽相关联的信道上反馈。

4. 发明申请

US20070098050A1 Pilot symbol transmission in wireless communication systems 有权
标题翻译：无线通信系统中的导频符号传输
公开(公告)号：US20070098050A1
公开(公告)日：2007-05-03
申请号：US11511735
申请日：2006-08-28
申请人： Aamod Khandekar , Avneesh Agrawal , Dhananjay Gore
发明人： Aamod Khandekar , Avneesh Agrawal , Dhananjay Gore
IPC分类号： H04B1/00 , H04K1/10
CPC分类号： H04J13/102 , H04B1/713 , H04L5/0026 , H04L5/0051 , H04L25/0204 , H04L25/0226 , H04L25/03866
摘要： Pilot symbols transmitted from different sectors of a same base station are multiplied with a same cell specific scrambling code and a first code having low cross correlation and second codes having low cross correlation. The second code is constant over the length of the first code, but may vary for repetitions of the first code.
摘要翻译：从相同基站的不同扇区发送的导频符号与相同的小区特定扰码和具有低互相关的第一码和具有低互相关的第二码相乘。第二个代码在第一个代码的长度上是恒定的，但是对于第一个代码的重复可能会有所不同。

5. 发明申请

US20060291371A1 Softer and soft handoff in an orthogonal frequency division wireless communication system 有权
标题翻译：在正交频分无线通信系统中更软和更软切换
公开(公告)号：US20060291371A1
公开(公告)日：2006-12-28
申请号：US11132765
申请日：2005-05-18
申请人： Arak Sutivong , Ayman Naguib , Dhananjay Gore , Alexei Gorokhov , Tingfang Ji
发明人： Arak Sutivong , Ayman Naguib , Dhananjay Gore , Alexei Gorokhov , Tingfang Ji
IPC分类号： H04J11/00
CPC分类号： H04B1/713 , H04B7/022 , H04B7/0491 , H04L5/0012 , H04L5/0023 , H04L5/0048 , H04L5/006 , H04L5/0069 , H04L25/0226 , H04L27/2613 , H04W36/18 , H04W48/08
摘要： Transmission patterns for pilot symbols transmitted from a mobile station or base station are provided. The patterns may be selected according to a location of the mobile station with respect to one or more antennas are provided. In some aspects, the pattern may be selected based upon the distance between the mobile station and the one or more antennas. In other aspect, the pattern may be based upon whether the mobile station is in handoff.
摘要翻译：提供从移动台或基站发送的导频符号的传输模式。可以根据移动台相对于一个或多个天线的位置来选择模式。在一些方面，可以基于移动台与一个或多个天线之间的距离来选择模式。在另一方面，该模式可以基于移动台是否处于切换状态。

6. 发明申请

US20060274691A1 Reception of H-ARQ transmissions with interference cancellation in a quasi-orthogonal communication system 有权
公开(公告)号：US20060274691A1
公开(公告)日：2006-12-07
申请号：US11147830
申请日：2005-06-07
申请人： Ayman Naguib , Alexei Gorokhov , Dhananjay Gore , Tingfang Ji , Arak Sutivong
发明人： Ayman Naguib , Alexei Gorokhov , Dhananjay Gore , Tingfang Ji , Arak Sutivong
IPC分类号： H04Q7/00
CPC分类号： H04L1/1819 , H04B2001/7152 , H04L5/0023 , H04L25/0224
摘要： To receive packets with interference cancellation, block transmissions for the packets are received on time-frequency blocks used by these packets. Receiver spatial processing is performed on input symbols to obtain detected symbols. Each packet is demodulated and decoded based on all detected symbols obtained for all block transmissions received for the packet. For each packet that is decoded correctly, the transmission for the packet is terminated, the interference due to the packet is estimated, and the estimated interference is subtracted from the input symbols for all time-frequency blocks used by the packet. Receiver spatial processing is performed on the interference-canceled symbols to obtain new detected symbols for all time-frequency blocks used by all correctly decoded packets. Each packet decoded in error and overlapping at least partially with any correctly decoded packet may be demodulated and decoded based on all detected symbols available for that packet.

7. 发明申请

US20060234646A1 Rate selection for a quasi-orthogonal communication system 有权
标题翻译：准正交通信系统的速率选择
公开(公告)号：US20060234646A1
公开(公告)日：2006-10-19
申请号：US11150417
申请日：2005-06-10
申请人： Ayman Naguib , Alexei Gorokhov , Tingfang Ji , Dhananjay Gore , Arak Sutivong
发明人： Ayman Naguib , Alexei Gorokhov , Tingfang Ji , Dhananjay Gore , Arak Sutivong
IPC分类号： H04B7/00 , H04B1/00
CPC分类号： H04L1/0019 , H04L1/0003 , H04L1/0016 , H04L1/06 , H04L25/0212 , H04L25/0228 , H04L25/0242 , H04L25/0256
摘要： To select a rate for a transmitter in a communication system, a receiver obtains a channel response estimate and a received SINR estimate for the transmitter, e.g., based on a pilot received from the transmitter. The receiver computes a hypothesized SINR for the transmitter based on the channel response estimate and the received SINR estimate. The receiver then selects a rate for the transmitter based on (1) the hypothesized SINR and (2) characterized statistics of noise and interference at the receiver for the transmitter, which may be given by a probability density function (PDF) of SINR loss with respect to the hypothesized SINR. A look-up table of rate versus hypothesized SINR may be generated a priori for the PDF of SINR loss. The receiver may then apply the hypothesized SINR for the transmitter to the look-up table, which then provides the rate for the transmitter.
摘要翻译：为了在通信系统中选择发射机的速率，接收机例如基于从发射机接收到的导频，获得用于发射机的信道响应估计和接收到的SINR估计。接收机基于信道响应估计和接收的SINR估计来计算发射机的假设SINR。接收机然后基于（1）假设的SINR和（2）用于发射机的接收机处的噪声和干扰的特征统计来选择发射机的速率，其可以由SINR丢失的概率密度函数（PDF）给出，尊重假设的SINR。速率与假设SINR的查找表可能会先于SINR损失的PDF生成。然后，接收机可以将发射机的假设SINR应用于查找表，然后查找表提供发射机的速率。

8. 发明申请

US20060233131A1 Channel quality reporting for adaptive sectorization 有权
标题翻译：渠道质量报告适应部门化
公开(公告)号：US20060233131A1
公开(公告)日：2006-10-19
申请号：US11261822
申请日：2005-10-27
申请人： Dhananjay Gore , Alexei Gorokhov , Tingfang Ji , Aamod Khandekar , Tamer Kadous
发明人： Dhananjay Gore , Alexei Gorokhov , Tingfang Ji , Aamod Khandekar , Tamer Kadous
IPC分类号： H04Q7/00
CPC分类号： H04W72/08 , H04B1/7143 , H04B7/043 , H04B7/0632 , H04B7/065 , H04B7/0689 , H04B7/0697 , H04L1/0026 , H04L1/0027 , H04L1/20 , H04L5/0023 , H04L5/0037 , H04L5/0051 , H04L5/0057 , H04L5/006
摘要： Apparatuses and methodologies are described that enhance performance in a wireless communication system using beamforming transmissions. According to one aspect, the channel quality is monitored. Channel quality indicators can be used to select a scheduling technique, such as space division multiplexing (SDM), multiple-input multiple output (MIMO) transmission and opportunistic beamforming for one or more user devices. In addition, the CQI can be used to determine the appropriate beam assignment or to update the beam pattern.
摘要翻译：描述了使用波束成形传输来增强在无线通信系统中的性能的装置和方法。根据一个方面，监视信道质量。信道质量指示符可以用于选择诸如空分复用（SDM），多输入多输出（MIMO）传输和一个或多个用户设备的机会波束成形的调度技术。另外，可以使用CQI来确定适当的波束分配或更新波束图案。

9. 发明申请

US20060034163A1 Pilot transmission schemes for a multi-antenna system 有权
公开(公告)号：US20060034163A1
公开(公告)日：2006-02-16
申请号：US10890718
申请日：2004-07-13
申请人： Dhananjay Gore , Avneesh Agrawal , Tamer Kadous
发明人： Dhananjay Gore , Avneesh Agrawal , Tamer Kadous
IPC分类号： H04B1/707 , H04J11/00
CPC分类号： H04L25/0226 , H04B7/0452 , H04B7/0684 , H04L27/2613
摘要： Efficient pilot transmission schemes for multi-antenna communication systems are described. In general, MISO receivers prefer a pilot transmitted in one spatial direction, and MIMO receivers typically require a pilot transmitted in different spatial directions. In one pilot transmission scheme, a first set of T scaled pilot symbols is generated with a first training vector and transmitted (e.g., continuously) from T transmit antennas, where T>1. If MIMO receiver(s) are to be supported by the system, then at least T−1 additional sets of T scaled pilot symbols are generated with at least T−1 additional training vectors and transmitted from the T transmit antennas. The training vectors are for different (e.g., orthogonal) spatial directions. Each MISO receiver can estimate its MISO channel based on the first set of scaled pilot symbols. Each MIMO receiver can estimate its MIMO channel based on the first and additional sets of scaled pilot symbols.

10. 发明申请

US20050163194A1 Interference estimation in a wireless communication system 审中-公开
标题翻译：无线通信系统中的干扰估计
公开(公告)号：US20050163194A1
公开(公告)日：2005-07-28
申请号：US11022489
申请日：2004-12-22
申请人： Dhananjay Gore , Avneesh Agrawal , Arvind Keerthi
发明人： Dhananjay Gore , Avneesh Agrawal , Arvind Keerthi
IPC分类号： H04B1/713 , H04B7/005 , H04L5/02
CPC分类号： H04B1/7143 , H04B1/715 , H04B2001/7154 , H04L5/023 , H04W52/38 , H04W52/42 , H04W52/44
摘要： Interference may be controlled by selectively blanking or attenuating transmit powers. A method of estimating interference caused by a transmitting entity in a wireless communication system comprises determining a desired level of accuracy in an interference estimate, determining a required number of blanks per subband set to achieve the desired level of accuracy, inserting the required number of blanks per subband set into a frequency hopping (FH) sequence, and transmitting according to the FH sequence.
摘要翻译：可以通过选择性地消隐或衰减发射功率来控制干扰。一种在无线通信系统中估计由发射实体引起的干扰的方法包括：确定干扰估计中期望的准确度水平，确定每个子带集所需的空白数以达到期望的精度水平，插入所需数量的空白每个子带设置成跳频（FH）序列，并根据FH序列进行发送。

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