公开(公告)号：US20070091805A1

公开(公告)日：2007-04-26

申请号：US11531384

申请日：2006-09-13

申请人： Sean Ramprashad ,  Christine Pepin ,  Ulas Kozat

发明人： Sean Ramprashad ,  Christine Pepin ,  Ulas Kozat

IPC分类号： H04L12/26 ,  H04Q7/00 ,  H04J3/16

CPC分类号： H04W28/10 ,  H04L47/10 ,  H04L47/14 ,  H04L47/22 ,  H04L47/36

摘要： Wireless access efficiency is improved in a multi-hop, multiple-flow network by optimizing multi-flows over the entire network. This approach also benefits individual flows. These mechanisms apply joint routing and traffic-shaping techniques to multiple-flows at intermediate hops. Even though the routing and traffic-shaping techniques may adversely affect flows at some hops, when considered over multiple hops (for a given flow) and over multiple flows (for a given hop or number of hops), significant performance may be achieved for all flows. System performance is achieved by controlling the routing paths of multiple flows in a multi-hop, multi-flow wireless network, and applying traffic shaping in a systematic way, rather than relying on an opportunistic (i.e., randomly or independently optimized) approach. In a multi-hop environment, additional advantages of transparency to both the originating application (at the application layer) and terminating application (at the application layer) are achieved.

摘要翻译： 通过优化整个网络上的多流，在多跳，多流网络中提高了无线接入效率。 这种方法也有利于个人流动。 这些机制将联合路由和流量整形技术应用于中间跳的多流。 尽管路由和流量整形技术可能会对某些跳跃的流量造成不利影响，但是在多跳（对于给定流量）和多个流量（对于给定的跳数或跳数）来说）时，可以对所有的流量实现显着的性能 流动。 通过控制多跳，多流无线网络中的多个流的路由路径，并以系统的方式应用流量整形，而不是依靠机会主义（即随机或独立优化）方法来实现系统性能。 在多跳环境中，实现了始发应用（在应用层）和终止应用（在应用层）的透明度的附加优点。

公开(公告)号：US20060241940A1

公开(公告)日：2006-10-26

申请号：US11408125

申请日：2006-04-19

申请人： Sean Ramprashad

发明人： Sean Ramprashad

IPC分类号： G10L19/02

CPC分类号： G10L19/032 ,  G10L19/028

摘要： A method and apparatus is disclosed herein for a quantizing parameters using partial information on atypical subsequences. In one embodiment, the method comprises partially classifying a first plurality of subsequences in a target vector into a number of selected groups, creating a refined fidelity criterion for each subsequence of the first plurality of subsequences based on information derived from classification, dividing a target vector into a second plurality of subsequences, and encoding the second plurality of subsequences, including quantizing the second plurality of subsequences given the refined fidelity criterion.

摘要翻译： 本文公开了使用非典型子序列部分信息的量化参数的方法和装置。 在一个实施例中，该方法包括将目标矢量中的第一多个子序列部分地分类为多个所选择的组，基于从分类导出的信息为第一多个子序列的每个子序列创建精确保真度准则，将目标矢量 进入第二多个子序列，并对第二多个子序列进行编码，包括量化给定精确保真度准则的第二多个子序列。

公开(公告)号：US20120113953A1

公开(公告)日：2012-05-10

申请号：US13288241

申请日：2011-11-03

申请人： Haralabos Papadopoulos ,  Sean Ramprashad ,  Giuseppe Caire

发明人： Haralabos Papadopoulos ,  Sean Ramprashad ,  Giuseppe Caire

IPC分类号： H04W74/04 ,  H04W72/04

CPC分类号： H04B7/0452 ,  H04B7/024 ,  H04L5/0023 ,  H04L5/0035 ,  H04L5/0037 ,  H04L5/0069

摘要： A method and apparatus is disclosed herein for scheduling and transmission for downlink multi-user MIMO (MU-MIMO). In one embodiment, the method comprises allocating a subset of time-frequency resources in the time-frequency plane to each distinct bin class, where each bin class comprises one or more bins of user terminals across the topology, and wherein user terminals in the one or more bins of each bin class are served across the topology by the subset of time-frequency resources. The method also comprises performing joint downlink MU-MIMO transmission using a plurality of bin class-dependent wireless transmission architectures at the plurality of base stations, where one or more bin classes is associated with one of the plurality of bin class-dependent architectures, and where each of the plurality of bin class-dependent architectures use different combinations of scheduling training and MU-MIMO transmission across the topology.

摘要翻译： 本文公开了一种用于下行链路多用户MIMO（MU-MIMO）的调度和传输的方法和装置。 在一个实施例中，该方法包括将时间 - 频率平面中的时间 - 频率资源的子集分配给每个不同的分类类别，其中每个分类包括跨越拓扑的一个或多个用户终端的小区，并且其中一个中的用户终端 或者更多的每个bin类的bin通过时间 - 频率资源子集在整个拓扑中提供。 该方法还包括使用在多个基站处的多个类别相关的无线传输架构来执行联合的下行链路MU-MIMO传输，其中一个或多个分组类别与多个类别依赖架构中的一个相关联，以及 其中所述多个二进制类别依赖架构中的每一个使用跨越所述拓扑的调度训练和MU-MIMO传输的不同组合。

公开(公告)号：US08638746B2

公开(公告)日：2014-01-28

申请号：US13288241

申请日：2011-11-03

申请人： Haralabos Papadopoulos ,  Sean Ramprashad ,  Giuseppe Caire

发明人： Haralabos Papadopoulos ,  Sean Ramprashad ,  Giuseppe Caire

IPC分类号： H04Q7/00

CPC分类号： H04B7/0452 ,  H04B7/024 ,  H04L5/0023 ,  H04L5/0035 ,  H04L5/0037 ,  H04L5/0069

摘要： A method and apparatus is disclosed herein for scheduling and transmission for downlink multi-user MIMO (MU-MIMO). In one embodiment, the method comprises allocating a subset of time-frequency resources in the time-frequency plane to each distinct bin class, where each bin class comprises one or more bins of user terminals across the topology, and wherein user terminals in the one or more bins of each bin class are served across the topology by the subset of time-frequency resources. The method also comprises performing joint downlink MU-MIMO transmission using a plurality of bin class-dependent wireless transmission architectures at the plurality of base stations, where one or more bin classes is associated with one of the plurality of bin class-dependent architectures, and where each of the plurality of bin class-dependent architectures use different combinations of scheduling training and MU-MIMO transmission across the topology.

摘要翻译： 本文公开了一种用于下行链路多用户MIMO（MU-MIMO）的调度和传输的方法和装置。 在一个实施例中，该方法包括将时间 - 频率平面中的时间 - 频率资源的子集分配给每个不同的分类类别，其中每个分类包括跨越拓扑的一个或多个用户终端的小区，并且其中一个中的用户终端 或者更多的每个bin类的bin通过时间 - 频率资源子集在整个拓扑中提供。 该方法还包括使用在多个基站处的多个类别相关的无线传输架构来执行联合的下行链路MU-MIMO传输，其中一个或多个分组类别与多个类别依赖架构中的一个相关联，以及 其中所述多个二进制类别依赖架构中的每一个使用跨越所述拓扑的调度训练和MU-MIMO传输的不同组合。

公开(公告)号：US20050100022A1

公开(公告)日：2005-05-12

申请号：US10706724

申请日：2003-11-12

申请人： Sean Ramprashad

发明人： Sean Ramprashad

IPC分类号： H04L1/00 ,  H04L12/28 ,  H04L12/56 ,  H04W72/10 ,  H04W72/12 ,  H04W74/08 ,  H04W84/12

CPC分类号： H04W72/1242 ,  H04L47/10 ,  H04L47/14 ,  H04L47/2416 ,  H04L47/2433 ,  H04L47/2441 ,  H04L47/283 ,  H04L47/32 ,  H04W74/0875 ,  H04W84/12

摘要： A WLAN system adapted to apply QoS differentiation to a media stream to be transmitted from a transmitting station (STA) to a receiving STA of that system. The transmitting STA processes the media stream to generate a base sub-stream and one or more enhancement sub-streams for subsequent transmission over a wireless communication channel and assigns different priorities to different sub-streams. Depending on the channel conditions, the transmitting STA may select to discard, without transmission, portions of data from enhancement sub-streams. The selection process is based on the assigned priority and operates to preserve as much of relatively high-priority data as possible. The receiving STA then processes the received data to generate a reconstructed media stream, which provides signal quality equal to or better than the signal quality supported by the base sub-stream. Advantageously, a WLAN system of the invention is adapted to change signal quality dynamically and incrementally in a manner commensurate with current channel conditions without the need for communication between the higher and lower network layers. In addition, it provides gradual and graceful degradation of signal quality when channel conditions deteriorate as opposed to abrupt degradation inherent in analogous prior art systems.

摘要翻译： 适用于将QoS区分应用于要从发射站（STA）发送到该系统的接收STA的媒体流的WLAN系统。 发送STA处理媒体流以生成基本子流和一个或多个增强子流，用于通过无线通信信道进行后续传输，并将不同的优先级分配给不同的子流。 根据信道条件，发送STA可以选择在不传输的情况下丢弃来自增强子流的数据的部分。 选择过程基于分配的优先级，并且操作以尽可能多地保留相对高优先级的数据。 然后，接收STA处理所接收的数据以产生重建的媒体流，其提供等于或优于由基本子流支持的信号质量的信号质量。 有利地，本发明的WLAN系统适于以与当前信道条件相称的方式动态地和递增地改变信号质量，而不需要较高和较低网络层之间的通信。 此外，当通道条件恶化而不是类似的现有技术系统中固有的突然劣化时，它提供信号质量的逐渐和优雅的降级。