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21. 发明申请

US20060256761A1 Rate selection for eigensteering in a MIMO communication system 有权
公开(公告)号：US20060256761A1
公开(公告)日：2006-11-16
申请号：US11128843
申请日：2005-05-12
申请人： Arnaud Meylan , Santosh Abraham , Sanjiv Nanda
发明人： Arnaud Meylan , Santosh Abraham , Sanjiv Nanda
IPC分类号： H04Q7/24
CPC分类号： H04B7/0417 , H04B7/0421 , H04B7/0632 , H04B7/0643 , H04L1/0002 , H04L1/0015 , H04L1/0025 , H04L1/0026 , H04L1/06 , H04L1/1671 , H04L25/0204 , H04L25/0228 , H04L25/0248 , H04L25/0398 , H04L2025/03414 , H04L2025/03426 , H04L2025/03802
摘要： Techniques for selecting rates for data transmission on eigenmodes of a MIMO channel are described. An access point transmits an unsteered MIMO pilot via the downlink. A user terminal estimates the downlink channel quality based on the downlink unsteered MIMO pilot and transmits an unsteered MIMO pilot and feedback information via the uplink. The feedback information is indicative of the downlink channel quality. The access point estimates the uplink channel quality and obtains a channel response matrix based on the uplink unsteered MIMO pilot, decomposes the channel response matrix to obtain eigenvectors and channel gains for the eigenmodes of the downlink, and selects rates for the eigenmodes based on the estimated uplink channel quality, the channel gains for the eigenmodes, and the feedback information. The access point processes data based on the selected rates and transmits steered data and a steered MIMO pilot on the eigenmodes with the eigenvectors.

22. 发明授权

US07872981B2 Rate selection for eigensteering in a MIMO communication system 有权
标题翻译： MIMO通信系统中本征导向的速率选择
公开(公告)号：US07872981B2
公开(公告)日：2011-01-18
申请号：US11128843
申请日：2005-05-12
申请人： Arnaud Meylan , Santosh Abraham , Sanjiv Nanda
发明人： Arnaud Meylan , Santosh Abraham , Sanjiv Nanda
IPC分类号： G01R31/08 , H04W4/00 , H03B1/02 , H04B17/00
CPC分类号： H04B7/0417 , H04B7/0421 , H04B7/0632 , H04B7/0643 , H04L1/0002 , H04L1/0015 , H04L1/0025 , H04L1/0026 , H04L1/06 , H04L1/1671 , H04L25/0204 , H04L25/0228 , H04L25/0248 , H04L25/0398 , H04L2025/03414 , H04L2025/03426 , H04L2025/03802
摘要： Techniques for selecting rates for data transmission on eigenmodes of a MIMO channel are described. An access point transmits an unsteered MIMO pilot via the downlink. A user terminal estimates the downlink channel quality based on the downlink unsteered MIMO pilot and transmits an unsteered MIMO pilot and feedback information via the uplink. The feedback information is indicative of the downlink channel quality. The access point estimates the uplink channel quality and obtains a channel response matrix based on the uplink unsteered MIMO pilot, decomposes the channel response matrix to obtain eigenvectors and channel gains for the eigenmodes of the downlink, and selects rates for the eigenmodes based on the estimated uplink channel quality, the channel gains for the eigenmodes, and the feedback information. The access point processes data based on the selected rates and transmits steered data and a steered MIMO pilot on the eigenmodes with the eigenvectors.
摘要翻译：描述了用于选择MIMO信道的本征模式上的数据传输速率的技术。接入点经由下行链路发送非导向MIMO导频。用户终端基于下行链路非导向MIMO导频来估计下行链路信道质量，并通过上行链路发送非导向MIMO导频和反馈信息。反馈信息表示下行链路信道质量。接入点估计上行链路信道质量，并且基于上行链路非导向MIMO导频获得信道响应矩阵，分解信道响应矩阵以获得用于下行链路本征模式的特征向量和信道增益，并且基于所估计的本征模式选择本征模式的速率上行链路信道质量，本征模式的信道增益和反馈信息。接入点基于所选择的速率处理数据，并在本征矢量的本征模式上传输转向数据和转向MIMO导频。

23. 发明授权

US09031044B2 Power control for wireless LAN stations 有权
标题翻译：无线局域网站功率控制
公开(公告)号：US09031044B2
公开(公告)日：2015-05-12
申请号：US12352733
申请日：2009-01-13
申请人： Hemanth Sampath , Richard van Nee , Santosh Abraham , Alok Aggarwal
发明人： Hemanth Sampath , Richard van Nee , Santosh Abraham , Alok Aggarwal
IPC分类号： H04W52/24 , H04W52/08 , H04W52/14
CPC分类号： H04W52/241 , H04W52/08 , H04W52/146 , H04W52/243 , H04W52/36 , H04W84/12 , Y02D70/00
摘要： Techniques and apparatus for controlling the transmit power of an uplink (UL) signal from a user terminal in a wireless communications system in an effort to achieve some target characteristic, such as a target carrier-to-interference (C/I) ratio, at an access point (AP) are provided. In this manner, such a user terminal may help avoid or compensate for imbalances in received radio frequency (RF) power between UL signals received from multiple user terminals by the AP. For example, the transmit power at each user terminal may be controlled in an effort to achieve a target post-processing C/I ratio of 28 dB per spatial stream in an effort to reduce large power imbalances and optimize throughput per user terminal. The user terminal and the AP may compose part of a multiple-input multiple-output (MIMO) communication system utilizing spatial-division multiple access (SDMA) techniques.
摘要翻译：用于在无线通信系统中用于控制来自用户终端的上行链路（UL）信号的发射功率的技术和装置，以努力实现诸如目标载波干扰（C / I）比等目标特性提供接入点（AP）。以这种方式，这样的用户终端可以帮助避免或补偿由AP从多个用户终端接收的UL信号之间的接收射频（RF）功率的不平衡。例如，可以控制每个用户终端处的发射功率，以努力实现每个空间流28dB的目标后处理C / I比，以减少大的功率不平衡并优化每个用户终端的吞吐量。用户终端和AP可以利用空分多址（SDMA）技术构成多输入多输出（MIMO）通信系统的一部分。

24. 发明授权

US08498578B2 Dynamic interference management for wireless networks 有权
标题翻译：无线网络的动态干扰管理
公开(公告)号：US08498578B2
公开(公告)日：2013-07-30
申请号：US12122480
申请日：2008-05-16
申请人： Santosh Abraham , Anastasios Stamoulis , Ashwin Sampath
发明人： Santosh Abraham , Anastasios Stamoulis , Ashwin Sampath
IPC分类号： H04B1/00 , H04B15/00 , H04B17/00
CPC分类号： H04W72/1231 , H04W84/12
摘要： Methods and apparatuses for dynamic interference management for wireless networks are disclosed. A node in a wireless network is configured to determine whether to cease transmissions during a period of time designated for a first node to transmit to a second node based on at least parameter relating to a channel between the first and second nodes.
摘要翻译：公开了用于无线网络的动态干扰管理的方法和装置。无线网络中的节点被配置为基于至少基于与第一和第二节点之间的信道相关的参数来确定在为第一节点指定的时间段期间是否停止传输到第二节点。

25. 发明授权

US08363587B2 Signaling methods for MMSE precoding with eigenmode selection 有权
标题翻译：用于本征模式选择的MMSE预编码的信令方法
公开(公告)号：US08363587B2
公开(公告)日：2013-01-29
申请号：US12408938
申请日：2009-03-23
申请人： Simone Merlin , Hemanth Sampath , Santosh Abraham , Alok Aggarwal , Vinay Sridhara , Sameer Vermani
发明人： Simone Merlin , Hemanth Sampath , Santosh Abraham , Alok Aggarwal , Vinay Sridhara , Sameer Vermani
IPC分类号： H04H20/71
CPC分类号： H04B7/065 , H04B7/0417 , H04B7/0434
摘要： Different methods of signaling between an access point and user terminals in a multiuser wireless system for performing a minimum mean square error (MMSE) precoding at the access point preceded with eigenmode selection are provided. For one embodiment of the present disclosure, a compact feedback may be utilized between a plurality of user terminals and the access point. For another embodiment of the present disclosure, a hybrid feedback may be utilized between the plurality of user terminals and the access point. For yet another embodiment of the present disclosure, a full feedback may be utilized between the plurality of user terminals and the access point.
摘要翻译：提供了在多用户无线系统中的接入点和用户终端之间用于在本征模式选择之前的接入点执行最小均方误差（MMSE）预编码的不同的信令方法。对于本公开的一个实施例，可以在多个用户终端和接入点之间使用紧凑的反馈。对于本公开的另一实施例，可以在多个用户终端和接入点之间使用混合反馈。对于本公开的另一个实施例，可以在多个用户终端和接入点之间使用完全反馈。

26. 发明申请

US20090245182A1 ADAPTIVELY REACTING TO RESOURCE UTILIZATION MESSAGES INCLUDING CHANNEL GAIN INDICATION 失效
标题翻译：适应资源利用信息包括通道增益指示
公开(公告)号：US20090245182A1
公开(公告)日：2009-10-01
申请号：US12055196
申请日：2008-03-25
申请人： Santosh Abraham , Ashwin Sampath , Anastasios Stamoulis
发明人： Santosh Abraham , Ashwin Sampath , Anastasios Stamoulis
IPC分类号： H04Q7/00
CPC分类号： H04W28/06
摘要： An adaptable decision parameter is used to determine whether to react to resource utilization messages. The decision parameter may comprise a decision threshold that is adapted based on received resource utilization messages. The decision parameter may comprise a probability that is used to determine whether to react to a received resource utilization message. Such a probability may be based on, for example, one or more channel conditions, the number of interferers seen by a node, the number of received resource utilization messages, or some other form of resource utilization message-related information.
摘要翻译：使用适应性决定参数来确定是否对资源利用消息做出反应。决策参数可以包括基于接收到的资源利用消息来适应的决策阈值。决策参数可以包括用于确定是否对接收到的资源利用消息做出反应的概率。这样的概率可以基于例如一个或多个信道条件，节点看到的干扰源的数量，接收的资源利用消息的数量，或资源利用消息相关信息的某种其他形式。

27. 发明授权

US08942636B2 Adaptive transmission of resource utilization messages based on throughput 有权
公开(公告)号：US08942636B2
公开(公告)日：2015-01-27
申请号：US12021215
申请日：2008-01-28
申请人： Rajarshi Gupta , Gavin Bernard Horn , Anastasios Stamoulis , Ashwin Sampath , Santosh Abraham
发明人： Rajarshi Gupta , Gavin Bernard Horn , Anastasios Stamoulis , Ashwin Sampath , Santosh Abraham
IPC分类号： H04B7/00 , H04W52/24 , H04W28/24 , H04W24/02 , H04W52/14
CPC分类号： H04W52/243 , H04W24/02 , H04W28/24 , H04W52/146 , H04W52/248
摘要： An adaptive scheme controls the transmission of interference management messages by wireless nodes. For example, the adaptive scheme may be used to determine whether and/or how to transmit resource utilization messages. Such a determination may be based on, for example, comparison of a quality of service threshold with a current quality of service level associated with received data. A quality of service threshold may be adapted based on the effect of previously transmitted resource utilization messages. A quality of service threshold for a given wireless node may be adapted based on the frequency at which the wireless node transmits resource utilization messages. A quality of service threshold for a given wireless node may be adapted based on information received from another wireless node. An adaptation scheme also may depend on the type of traffic received by a given wireless node. A quality of service threshold also may be adapted based on throughput information.

28. 发明授权

US08498247B2 Adaptively reacting to resource utilization messages including channel gain indication 失效
标题翻译：对资源利用消息进行适应性反应，包括信道增益指示
公开(公告)号：US08498247B2
公开(公告)日：2013-07-30
申请号：US12055196
申请日：2008-03-25
申请人： Santosh Abraham , Ashwin Sampath , Anastasios Stamoulis
发明人： Santosh Abraham , Ashwin Sampath , Anastasios Stamoulis
IPC分类号： H04W4/00
CPC分类号： H04W28/06
摘要： An adaptable decision parameter is used to determine whether to react to resource utilization messages. The decision parameter may comprise a decision threshold that is adapted based on received resource utilization messages. The decision parameter may comprise a probability that is used to determine whether to react to a received resource utilization message. Such a probability may be based on, for example, one or more channel conditions, the number of interferers seen by a node, the number of received resource utilization messages, or some other form of resource utilization message-related information.
摘要翻译：使用适应性决定参数来确定是否对资源利用消息做出反应。决策参数可以包括基于接收到的资源利用消息来适应的决策阈值。决策参数可以包括用于确定是否对接收到的资源利用消息做出反应的概率。这样的概率可以基于例如一个或多个信道条件，节点看到的干扰源的数量，接收的资源利用消息的数量，或资源利用消息相关信息的某种其他形式。

29. 发明授权

US08401018B2 Method and apparatus for scheduling in a wireless network 有权
标题翻译：用于在无线网络中进行调度的方法和装置
公开(公告)号：US08401018B2
公开(公告)日：2013-03-19
申请号：US11086085
申请日：2005-03-21
申请人： Arnaud Meylan , Santosh Abraham
发明人： Arnaud Meylan , Santosh Abraham
IPC分类号： H04W72/00
CPC分类号： H04W72/1252 , H04B7/0447 , H04L1/0015 , H04L1/1854 , H04L25/0226 , H04L47/14 , H04L47/24 , H04L47/26 , H04W80/04
摘要： Techniques for scheduling flows and links for transmission are described. Each link is an oriented source-destination pair and carries one or more flows. Each flow may be associated with throughput, delay, feedback (e.g., acknowledgments (ACKs)) and/or other requirements. A serving interval is determined for each flow based on the requirements for the flow. A serving interval is determined for each link based on the serving intervals for all of the flows sent on the link. Each link is scheduled for transmission at least once in each serving interval, if system resources are available, to ensure that the requirements for all flows sent on the link are met. The links are also scheduled in a manner to facilitate closed loop rate control. The links are further scheduled such that ACKs for one or more layers in a protocol stack are sent at sufficiently fast rates.
摘要翻译：描述用于调度流和用于传输的链路的技术。每个链路是一个定向的源 - 目的地对，并携带一个或多个流。每个流程可以与吞吐量，延迟，反馈（例如确认（ACK））和/或其他要求相关联。根据流量的要求为每个流量确定服务间隔。基于在链路上发送的所有流的服务间隔，为每个链路确定服务间隔。如果系统资源可用，则每个链路被调度至少在每个服务间隔中传输一次，以确保满足在链路上发送的所有流的要求。这些链路的安排也是为了方便闭环速率控制。进一步调度链路，使得以足够快的速率发送协议栈中的一个或多个层的ACK。

30. 发明申请

US20100238912A1 SIGNALING METHODS FOR MMSE PRECODING WITH EIGENMODE SELECTION 有权
标题翻译：用于MMSE预编码与信号选择的信令方法
公开(公告)号：US20100238912A1
公开(公告)日：2010-09-23
申请号：US12408938
申请日：2009-03-23
申请人： Simone Merlin , Hemanth Sampath , Santosh Abraham , Alok Aggarwal , Vinay Sridhara , Sameer Vermani
发明人： Simone Merlin , Hemanth Sampath , Santosh Abraham , Alok Aggarwal , Vinay Sridhara , Sameer Vermani
IPC分类号： H04W4/00 , H04B7/00
CPC分类号： H04B7/065 , H04B7/0417 , H04B7/0434
摘要： Different methods of signaling between an access point and user terminals in a multiuser wireless system for performing a minimum mean square error (MMSE) precoding at the access point preceded with eigenmode selection are provided. For one embodiment of the present disclosure, a compact feedback may be utilized between a plurality of user terminals and the access point. For another embodiment of the present disclosure, a hybrid feedback may be utilized between the plurality of user terminals and the access point. For yet another embodiment of the present disclosure, a full feedback may be utilized between the plurality of user terminals and the access point.
摘要翻译：提供了在多用户无线系统中的接入点和用户终端之间用于在本征模式选择之前的接入点执行最小均方误差（MMSE）预编码的不同的信令方法。对于本公开的一个实施例，可以在多个用户终端和接入点之间使用紧凑的反馈。对于本公开的另一实施例，可以在多个用户终端和接入点之间使用混合反馈。对于本公开的另一个实施例，可以在多个用户终端和接入点之间使用完全反馈。

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