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1. 发明授权

US08428156B2 Rate control for multi-channel communication systems 有权
标题翻译：多通道通讯系统的速率控制
公开(公告)号：US08428156B2
公开(公告)日：2013-04-23
申请号：US11688235
申请日：2007-03-19
申请人： Hao Xu , Byoung-Hoon Kim , Durga Prasad Malladi
发明人： Hao Xu , Byoung-Hoon Kim , Durga Prasad Malladi
IPC分类号： H04K1/10 , H04L27/28
CPC分类号： H04L1/0002 , H04L1/0025 , H04L1/0026 , H04L5/0023 , H04L5/0037 , H04L5/0046 , H04L5/006 , H04L5/023 , H04L25/0206 , H04L27/2608
摘要： Various methods and systems for determining reverse-link data rates in a multi-user communication system are disclosed. For example, an apparatus for controlling a data rate of at least a first UE in a multi-user communication system is disclosed. The apparatus may include a channel estimation device configured to determine channel estimates for a plurality of different reverse-link signals to produce a plurality of channel estimates, a demodulation device configured to determine a first signal-to-noise (SNR) ratio for the first UE using the plurality of different channels estimates, and a data rate determining device configured to determine a first reverse-link data rate for the first UE using the first SNR.
摘要翻译：公开了用于在多用户通信系统中确定反向链路数据速率的各种方法和系统。例如，公开了一种用于在多用户通信系统中控制至少第一UE的数据速率的装置。该装置可以包括：信道估计装置，被配置为确定多个不同反向链路信号的信道估计以产生多个信道估计;解调装置，被配置为确定第一信道估计的第一信噪比 UE使用多个不同信道估计，以及数据速率确定装置，被配置为使用第一SNR确定第一UE的第一反向链路数据速率。

2. 发明授权

US09130791B2 Uplink channel estimation using a signaling channel 有权
标题翻译：使用信令信道的上行链路信道估计
公开(公告)号：US09130791B2
公开(公告)日：2015-09-08
申请号：US11687645
申请日：2007-03-17
申请人： Byoung-Hoon Kim , Durga Prasad Malladi , Hao Xu
发明人： Byoung-Hoon Kim , Durga Prasad Malladi , Hao Xu
IPC分类号： H04B17/00 , H04L25/02 , H04L27/26 , H04L1/00 , H04L1/02 , H04L1/06 , H04L5/02
CPC分类号： H04L5/0057 , H04B7/0413 , H04B7/0632 , H04B2201/70701 , H04L1/0002 , H04L1/02 , H04L1/06 , H04L5/023 , H04L25/0224 , H04L25/023 , H04L27/261 , H04W52/325 , H04W72/042
摘要： Techniques for efficiently deriving uplink channel estimates without consuming much additional uplink resources are described. A user equipment (UE) may send a request for uplink resources on a request channel (REQCH) whenever the UE desires to transmit data on the uplink. The UE may send the REQCH on a set of subcarriers and from multiple antennas, e.g., send REQCH data on data subcarriers and pilot on pilot subcarriers. A node B may receive the request, estimate the complex channel gains for the pilot subcarriers based on received pilot symbols, and coherently demodulate received data symbols based on the channel gain estimates. The Node B may estimate the complex channel gains for the data subcarriers based on demodulated data symbols and derive a channel estimate for each UE antenna based on the channel gain estimates for the pilot and data subcarriers. The Node B may use the channel estimates for MIMO scheduling, subband scheduling, and rate selection.
摘要翻译：描述了在不消耗大量附加上行链路资源的情况下有效地导出上行链路信道估计的技术。每当UE希望在上行链路上发送数据时，用户设备（UE）可以在请求信道（REQCH）上发送上行链路资源的请求。 UE可以在一组子载波上从多个天线发送REQCH，例如在数据子载波上发送REQCH数据，并在导频子载波上导频。节点B可以接收该请求，基于接收到的导频符号估计导频子载波的复信道增益，并且基于信道增益估计来相干地解调所接收的数据符号。节点B可以基于解调的数据符号估计数据子载波的复信道增益，并且基于导频和数据子载波的信道增益估计导出每个UE天线的信道估计。节点B可以使用用于MIMO调度，子带调度和速率选择的信道估计。

3. 发明授权

US08081698B2 Method and apparatus for selection mechanism between OFDM-MIMO and LFDM-SIMO 有权
标题翻译： OFDM-MIMO与LFDM-SIMO之间的选择机制的方法和装置
公开(公告)号：US08081698B2
公开(公告)日：2011-12-20
申请号：US11770600
申请日：2007-06-28
申请人： Hao Xu , Byoung-Hoon Kim , Durga Prasad Malladi
发明人： Hao Xu , Byoung-Hoon Kim , Durga Prasad Malladi
IPC分类号： H04B7/02
CPC分类号： H04L1/0025 , H04B7/0689 , H04L1/0002 , H04L1/0021 , H04L27/2601 , H04L27/2614 , H04W52/245 , H04W52/367 , H04W52/42
摘要： Systems and methodologies are described that facilitate switching between various combinations of MIMO, SIMO, SISO and OFDM, LFDM and IFDM. According to various aspects, a method for a wireless communication network is provided that includes: receiving a first set of data information, wherein the first set of information comprising a first value, determining if the first value is above a threshold and transmitting an indication to switch to using a first transmission technique if determined that the first value is above the threshold.
摘要翻译：描述了促进MIMO，SIMO，SISO和OFDM，LFDM和IFDM的各种组合之间的切换的系统和方法。根据各方面，提供了一种用于无线通信网络的方法，包括：接收第一组数据信息，其中所述第一组信息包括第一值，确定所述第一值是否高于阈值，并将指示发送到如果确定第一值高于阈值，则切换到使用第一传输技术。

4. 发明授权

US08914015B2 Grouping of users for MIMO transmission in a wireless communication system 有权
标题翻译：在无线通信系统中对用于MIMO传输的用户进行分组
公开(公告)号：US08914015B2
公开(公告)日：2014-12-16
申请号：US11686951
申请日：2007-03-15
申请人： Byoung-Hoon Kim , Durga Prasad Malladi
发明人： Byoung-Hoon Kim , Durga Prasad Malladi
IPC分类号： H04M3/00 , H04L1/06 , H04B7/04 , H04L1/00 , H04B7/06
CPC分类号： H04B7/0452 , H04B7/0417 , H04B7/0632 , H04B7/0665 , H04L1/0002 , H04L1/0009 , H04L1/0015 , H04L1/002 , H04L1/0025 , H04L1/0026 , H04L1/0035 , H04L1/06
摘要： Techniques for supporting MIMO transmission are described. User equipments (UEs) are classified into a first group of UEs to be scheduled individually and a second group of UEs that can be scheduled together. The classification may be based upon the number of transmit and receive antennas, sector loading, data requirements, long-term channel statistics, the number of UEs, etc. Channel quality indicator (CQI) information received from the UEs is interpreted in different manners depending on the groups to which the UEs belong. A single UE may be selected at a time from the first group or multiple UEs may be selected at a time from the second group for MIMO transmission. A MIMO transmission may be sent to a single UE in the first group or multiple UEs in the second group at rates selected based upon the CQI information.
摘要翻译：描述了支持MIMO传输的技术。用户设备（UE）被分类为要单独调度的第一组UE和可以一起调度的第二组UE。分类可以基于发射和接收天线的数量，扇区负载，数据需求，长期信道统计，UE的数量等。从UE接收的信道质量指示符（CQI）信息以不同的方式被解释，这取决于在UE所属的组上。可以从第一组一次选择单个UE，或者可以从第二组一次选择多个UE进行MIMO传输。可以基于CQI信息选择的速率将MIMO传输发送到第一组中的单个UE或第二组中的多个UE。

5. 发明授权

US08687620B2 Fast cell search 有权
标题翻译：快速小区搜索
公开(公告)号：US08687620B2
公开(公告)日：2014-04-01
申请号：US13359018
申请日：2012-01-26
申请人： Durga Prasad Malladi , Byoung-Hoon Kim , Tao Luo
发明人： Durga Prasad Malladi , Byoung-Hoon Kim , Tao Luo
IPC分类号： H04J3/06
CPC分类号： H04W48/16 , H04J11/0069 , H04L27/2613 , H04L27/2655 , H04L27/2675
摘要： Systems and methodologies are described that facilitate searches for a cell in a wireless communication environment. A mobile device can employ a searcher that can detect timing information respectively associated with PSCs and cells to determine the cell with the highest correlation. The searcher can detect SSCs, which can include detecting associated phase information, to determine the SSC with the highest correlation, CP length, and/or other information to facilitate identifying a desired cell having the strongest signal to establish communication between the mobile device and the desired cell. PSCs respectively associated with cells can have different positions in the symbol sequences, and SSCs can respectively be phase shifted at different angles to facilitate detection and identification of a cell(s), where a PSC can be utilized as a phase reference by the associated SSC.
摘要翻译：描述了便于在无线通信环境中搜索小区的系统和方法。移动设备可以使用搜索器，其可以检测分别与PSC和小区相关联的定时信息，以确定具有最高相关性的小区。搜索器可以检测SSC，其可以包括检测相关联的相位信息，以确定具有最高相关性，CP长度和/或其他信息的SSC，以便于识别具有最强信号的期望小区，以建立移动设备与想要的细胞。分别与单元相关联的PSC可以在符号序列中具有不同的位置，并且SSC可以分别以不同的角度相移以促进单元的检测和识别，其中PSC可以被相关联的SSC用作相位参考。

6. 发明授权

US08634403B2 Fast cell search 有权
公开(公告)号：US08634403B2
公开(公告)日：2014-01-21
申请号：US11972523
申请日：2008-01-10
申请人： Durga Prasad Malladi , Byoung-Hoon Kim , Tao Luo
发明人： Durga Prasad Malladi , Byoung-Hoon Kim , Tao Luo
IPC分类号： H04J3/06
CPC分类号： H04W48/16 , H04J11/0069 , H04L27/2613 , H04L27/2655 , H04L27/2675
摘要： Systems and methodologies are described that facilitate searches for a cell in a wireless communication environment. A mobile device can employ a searcher that can detect timing information respectively associated with PSCs and cells to determine the cell with the highest correlation. The searcher can detect SSCs, which can include detecting associated phase information, to determine the SSC with the highest correlation, CP length, and/or other information to facilitate identifying a desired cell having the strongest signal to establish communication between the mobile device and the desired cell. PSCs respectively associated with cells can have different positions in the symbol sequences, and SSCs can respectively be phase shifted at different angles to facilitate detection and identification of a cell(s), where a PSC can be utilized as a phase reference by the associated SSC.

7. 发明授权

US08630184B2 Uplink control channel format 有权
标题翻译：上行控制通道格式
公开(公告)号：US08630184B2
公开(公告)日：2014-01-14
申请号：US12191577
申请日：2008-08-14
申请人： Byoung-Hoon Kim , Durga Prasad Malladi
发明人： Byoung-Hoon Kim , Durga Prasad Malladi
IPC分类号： H04W24/10
CPC分类号： H04L1/0026 , H04L1/003 , H04L1/1671 , H04L5/0023 , H04L5/0053 , H04L5/0057 , H04L25/03343 , H04L2025/03426 , H04L2025/03802
摘要： Systems and methodologies are described that facilitate encoding feedback or control information into a compact payload. In particular, a rank indicator, a precoding matrix indicator and channel quality indicators are packaged into a control channel payload that fits into a single sub-frame. The payload format is determined based at least in part on an antenna configuration or channel quality indicator granularity. In addition, hybrid automatic repeat requests can be included in the payload.
摘要翻译：描述了有助于将反馈或控制信息编码成紧凑的有效载荷的系统和方法。特别地，等级指示符，预编码矩阵指示符和信道质量指示符被封装成适合于单个子帧的控制信道有效载荷。至少部分地基于天线配置或信道质量指示符粒度确定有效载荷格式。此外，有效载荷中可以包含混合自动重复请求。

8. 发明授权

US08509710B2 MIMO transmission with explicit and implicit cyclic delays 有权
标题翻译：具有显式和隐式循环延迟的MIMO传输
公开(公告)号：US08509710B2
公开(公告)日：2013-08-13
申请号：US12235466
申请日：2008-09-22
申请人： Byoung-Hoon Kim , Durga Prasad Malladi , Xiaoxia Zhang , Taesang Yoo
发明人： Byoung-Hoon Kim , Durga Prasad Malladi , Xiaoxia Zhang , Taesang Yoo
IPC分类号： H04B1/18
CPC分类号： H04B7/0671 , H04B7/0413 , H04L5/0023 , H04L5/0048 , H04L25/0204 , H04L25/0226 , H04L25/0242 , H04L27/2613
摘要： Techniques for transmitting data using a combination of explicit cyclic delay and implicit cyclic delay are described. A transmitter may perform first processing for cyclic delay diversity (or explicit cyclic delay processing) based on a first set of cyclic delay values known to a receiver. The transmitter may perform precoding based on a precoding matrix either before or after the explicit cyclic delay processing. The transmitter may perform second processing for cyclic delay diversity (or implicit cyclic delay processing) based on a second set of cyclic delay values unknown to the receiver. The transmitter may perform both explicit and implicit cyclic delay processing for data and may perform only implicit cyclic delay processing for pilot. One entity may select the first set of cyclic delay values and inform the other entity. The transmitter may autonomously select the second set of cyclic delay values without informing the receiver.
摘要翻译：描述了使用显式循环延迟和隐式循环延迟的组合来发送数据的技术。发射机可以基于接收机已知的第一组循环延迟值来执行循环延迟分集（或显式循环延迟处理）的第一处理。发射机可以在显式循环延迟处理之前或之后基于预编码矩阵执行预编码。发射机可以基于接收机未知的第二组循环延迟值来执行循环延迟分集（或隐式循环延迟处理）的第二处理。发射机可以对数据执行显式和隐式循环延迟处理，并且可以仅对导频执行隐式循环延迟处理。一个实体可以选择第一组循环延迟值并通知另一个实体。发射机可以自主地选择第二组循环延迟值而不通知接收机。

9. 发明申请

US20120122446A1 FAST CELL SEARCH 有权
标题翻译：快速细胞搜索
公开(公告)号：US20120122446A1
公开(公告)日：2012-05-17
申请号：US13359018
申请日：2012-01-26
申请人： Durga Prasad Malladi , Byoung-Hoon Kim , Tao Luo
发明人： Durga Prasad Malladi , Byoung-Hoon Kim , Tao Luo
IPC分类号： H04W56/00
CPC分类号： H04W48/16 , H04J11/0069 , H04L27/2613 , H04L27/2655 , H04L27/2675
摘要： Systems and methodologies are described that facilitate searches for a cell in a wireless communication environment. A mobile device can employ a searcher that can detect timing information respectively associated with PSCs and cells to determine the cell with the highest correlation. The searcher can detect SSCs, which can include detecting associated phase information, to determine the SSC with the highest correlation, CP length, and/or other information to facilitate identifying a desired cell having the strongest signal to establish communication between the mobile device and the desired cell. PSCs respectively associated with cells can have different positions in the symbol sequences, and SSCs can respectively be phase shifted at different angles to facilitate detection and identification of a cell(s), where a PSC can be utilized as a phase reference by the associated SSC.
摘要翻译：描述了便于在无线通信环境中搜索小区的系统和方法。移动设备可以使用搜索器，其可以检测分别与PSC和小区相关联的定时信息，以确定具有最高相关性的小区。搜索器可以检测SSC，其可以包括检测相关联的相位信息，以确定具有最高相关性，CP长度和/或其他信息的SSC，以便于识别具有最强信号的期望小区，以建立移动设备与想要的细胞。分别与单元相关联的PSC可以在符号序列中具有不同的位置，并且SSC可以分别以不同的角度相移以促进单元的检测和识别，其中PSC可以被相关联的SSC用作相位参考。

10. 发明申请

US20110310952A1 METHOD AND APPARATUS FOR BLOCK-WISE DECISION-FEEDBACK EQUALIZATION FOR WIRELESS COMMUNICATION 失效
标题翻译：用于无线通信的块式决策反馈均衡的方法和装置
公开(公告)号：US20110310952A1
公开(公告)日：2011-12-22
申请号：US12818976
申请日：2010-06-18
申请人： Yongbin Wei , Byoung-Hoon Kim , Durga Prasad Malladi
发明人： Yongbin Wei , Byoung-Hoon Kim , Durga Prasad Malladi
IPC分类号： H04L27/01
CPC分类号： H04L25/03146 , H04L25/03159
摘要： Techniques for performing decision feedback equalization are described. A feed-forward filter response and a feedback filter response are derived based on a channel estimate and a reliability parameter and further without constraint on the feedback filter response or with a constraint of no feedback for an on-time sample. The reliability parameter is indicative of the reliability of the feedback used for equalization and may be frequency dependent or frequency invariant. Different feed-forward and feedback filter responses may be derived with different constraints on the feedback filter and different assumptions for the reliability parameter. Equalization is performed with the feed-forward and feedback filter responses. If equalization is performed for multiple iterations then, for each iteration, the reliability parameter may be updated, the feed-forward and feedback filter responses may be derived based on the updated reliability parameter, and equalization may be performed with the filter responses for the iteration.
摘要翻译：描述用于执行判决反馈均衡的技术。基于信道估计和可靠性参数导出前馈滤波器响应和反馈滤波器响应，并且进一步不受反馈滤波器响应的约束或者对于准时采样的无反馈的约束。可靠性参数表示用于均衡的反馈的可靠性，并且可以是频率依赖的或频率不变的。不同的前馈和反馈滤波器响应可以通过反馈滤波器的不同约束和可靠性参数的不同假设得出。使用前馈和反馈滤波器响应执行均衡。如果对多次迭代执行均衡，那么对于每个迭代，可以更新可靠性参数，可以基于更新的可靠性参数导出前馈和反馈滤波器响应，并且可以用迭代的滤波器响应来执行均衡。

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