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公开(公告)号：US08625507B1
公开(公告)日：2014-01-07
申请号：US12932801
申请日：2011-03-07
申请人： Ozgur Gurbuz , David Pignatelli , David Stephenson , Eldad Perahia , Bretton Douglas , Ender Ayanoglu
发明人： Ozgur Gurbuz , David Pignatelli , David Stephenson , Eldad Perahia , Bretton Douglas , Ender Ayanoglu
CPC分类号： H04B7/0689 , H04B7/0413 , H04B7/0628 , H04B7/0871 , H04W28/22 , H04W84/12
摘要： An apparatus and method for operating a Multiple Input Multiple Output (MIMO)-capable subscriber node are disclosed. In one embodiment, an apparatus includes a MIMO-capable physical layer transceiver and a Medium Access Control (MAC) layer block that measures a received transmission to determine channel conditions. Upon receiving a transmission wherein said channel conditions meet specified conditions, the MAC layer block transmits a message to an access point indicating that the apparatus wants to switch between a non-MIMO mode and a MIMO mode, and upon receiving an acknowledgement, the MAC layer block switches between the non-MIMO mode and the MIMO mode. An apparatus for operating an access node is also disclosed.
摘要翻译： 公开了一种用于操作多输入多输出（MIMO）能力的用户节点的装置和方法。 在一个实施例中，一种装置包括MIMO能力的物理层收发机和媒体接入控制（MAC）层块，其测量接收到的传输以确定信道状况。 在接收到所述信道条件满足指定条件的传输时，MAC层块向接入点发送指示设备在非MIMO模式和MIMO模式之间切换的消息，并且在接收到确认时，MAC层 在非MIMO模式和MIMO模式之间进行块切换。 还公开了一种用于操作接入节点的装置。
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公开(公告)号：US07301924B1
公开(公告)日：2007-11-27
申请号：US10197300
申请日：2002-07-15
申请人： Ozgur Gurbuz , David Pignatelli , David Stephenson , Eldad Perahia , Bretton Douglas , Ender Ayanoglu
发明人： Ozgur Gurbuz , David Pignatelli , David Stephenson , Eldad Perahia , Bretton Douglas , Ender Ayanoglu
CPC分类号： H04B7/0689 , H04B7/0413 , H04B7/0628 , H04B7/0871 , H04W28/22 , H04W84/12
摘要： The MAC layer of a wireless communication standard is modified to facilitate MIMO (multiple input multiple output) processing and thereby increase capacity and/or spectral efficiency. In one implementation, the IEEE 802.11a standard is modified in this way. A contention free period (CFP) is divided between MIMO communications and non-MIMO communications. An access point may maintain a list of nodes operating in MIMO mode and nodes operating in non-MIMO mode.
摘要翻译： 修改无线通信标准的MAC层以促进MIMO（多输入多输出）处理，从而增加容量和/或频谱效率。 在一个实现中，以这种方式修改IEEE 802.11a标准。 无竞争时段（CFP）在MIMO通信和非MIMO通信之间划分。 接入点可以保持在MIMO模式下操作的节点列表以及以非MIMO模式工作的节点。
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公开(公告)号：US07929412B1
公开(公告)日：2011-04-19
申请号：US11974848
申请日：2007-10-16
申请人： Ozgur Gurbuz , David Pignatelli , David Stephenson , Eldad Perahia , Bretton Douglas , Ender Ayanoglu
发明人： Ozgur Gurbuz , David Pignatelli , David Stephenson , Eldad Perahia , Bretton Douglas , Ender Ayanoglu
CPC分类号： H04B7/0689 , H04B7/0413 , H04B7/0628 , H04B7/0871 , H04W28/22 , H04W84/12
摘要： An apparatus and method for operating a Multiple Input Multiple Output (MIMO)-capable subscriber node are disclosed. In one embodiment, an apparatus includes a MIMO-capable physical layer transceiver and a Medium Access Control (MAC) layer block that measures a received transmission to determine channel conditions. Upon receiving a transmission wherein said channel conditions meet specified conditions, the MAC layer block requests an access point for permission to switch between a non-MIMO mode and a MIMO mode, and upon receiving permission, the MAC layer block switches between the non-MIMO mode and the MIMO mode. An apparatus for operating an access node is also disclosed.
摘要翻译： 公开了一种用于操作多输入多输出（MIMO）能力的用户节点的装置和方法。 在一个实施例中，一种装置包括MIMO能力的物理层收发机和媒体接入控制（MAC）层块，其测量接收到的传输以确定信道状况。 在接收到其中所述信道条件满足指定条件的传输时，MAC层块请求接入点以允许在非MIMO模式和MIMO模式之间切换，并且在接收到许可后，MAC层块在非MIMO 模式和MIMO模式。 还公开了一种用于操作接入节点的装置。
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公开(公告)号：US07352718B1
公开(公告)日：2008-04-01
申请号：US10624653
申请日：2003-07-22
CPC分类号： H04L65/601 , H04B7/0413 , H04B7/10 , H04L1/0083 , H04L1/1607 , H04L1/1854 , H04L2001/0093 , H04W16/28 , H04W52/04 , H04W72/0406 , H04W88/10
摘要： Multiple Input Multiple Output (MIMO) technology in conjunction with the IEEE 802.11 standard enables simultaneous communication of data packets to or from multiple users in the same frequency. Spatial divisional multiple access (SDMA) is thus provided. In this way, system capacity can be increased to an extent that depends on available antenna resources and the multipath characteristics of the communication channel. Doubling or quadrupling of network throughput can be achieved.
摘要翻译： 结合IEEE 802.11标准的多输入多输出（MIMO）技术可以实现与同一频率的多个用户的数据包同时通信。 因此提供了空分多址（SDMA）。 以这种方式，可以将系统容量增加到取决于可用天线资源和通信信道的多径特性的程度。 可以实现网络吞吐量的两倍或四倍。
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公开(公告)号：US08737328B1
公开(公告)日：2014-05-27
申请号：US13135191
申请日：2011-06-28
CPC分类号： H04L65/601 , H04B7/0413 , H04B7/10 , H04L1/0083 , H04L1/1607 , H04L1/1854 , H04L2001/0093 , H04W16/28 , H04W52/04 , H04W72/0406 , H04W88/10
摘要： Multiple Input Multiple Output (MIMO) technology in conjunction with the IEEE 802.11 standard enables simultaneous communication of data packets to or from multiple users in the same frequency. Spatial divisional multiple access (SDMA) is thus provided. In this way, system capacity can be increased to an extent that depends on available antenna resources and the multipath characteristics of the communication channel. Doubling or quadrupling of network throughput can be achieved.
摘要翻译： 结合IEEE 802.11标准的多输入多输出（MIMO）技术可以实现与同一频率的多个用户的数据包同时通信。 因此提供了空分多址（SDMA）。 以这种方式，可以将系统容量增加到取决于可用天线资源和通信信道的多径特性的程度。 可以实现网络吞吐量的两倍或四倍。
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公开(公告)号：US07995525B1
公开(公告)日：2011-08-09
申请号：US12011561
申请日：2008-01-28
CPC分类号： H04L65/601 , H04B7/0413 , H04B7/10 , H04L1/0083 , H04L1/1607 , H04L1/1854 , H04L2001/0093 , H04W16/28 , H04W52/04 , H04W72/0406 , H04W88/10
摘要： Multiple Input Multiple Output (MIMO) technology in conjunction with the IEEE 802.11 standard enables simultaneous communication of data packets to or from multiple users in the same frequency. Spatial divisional multiple access (SDMA) is thus provided. In this way, system capacity can be increased to an extent that depends on available antenna resources and the multipath characteristics of the communication channel. Doubling or quadrupling of network throughput can be achieved.
摘要翻译： 结合IEEE 802.11标准的多输入多输出（MIMO）技术可以实现与同一频率的多个用户的数据包同时通信。 因此提供了空分多址（SDMA）。 以这种方式，可以将系统容量增加到取决于可用天线资源和通信信道的多径特性的程度。 可以实现网络吞吐量的两倍或四倍。
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公开(公告)号：US07352688B1
公开(公告)日：2008-04-01
申请号：US10335500
申请日：2002-12-31
申请人： Eldad Perahia , Bretton Douglas , David Pignatelli
发明人： Eldad Perahia , Bretton Douglas , David Pignatelli
IPC分类号： H04J11/00
CPC分类号： H04L27/2655 , H04B7/0413 , H04B7/10 , H04L5/0023 , H04L5/0048 , H04L25/0202 , H04L25/0226
摘要： A specialized preamble is provided to facilitate matrix channel estimation of a MIMO channel. In a particular implementation, a channel training preamble provided by the IEEE 802.11a standard is modified to facilitate MIMO channel estimation.
摘要翻译： 提供专用前置码以便于MIMO信道的矩阵信道估计。 在特定实现中，由IEEE 802.11a标准提供的信道训练前导码被修改以便于MIMO信道估计。
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公开(公告)号：US08374105B1
公开(公告)日：2013-02-12
申请号：US12011546
申请日：2008-01-28
申请人： Eldad Perahia , Bretton Douglas , David Pignatelli
发明人： Eldad Perahia , Bretton Douglas , David Pignatelli
CPC分类号： H04L27/2655 , H04B7/0413 , H04B7/10 , H04L5/0023 , H04L5/0048 , H04L25/0202 , H04L25/0226
摘要： A specialized preamble is provided to facilitate matrix channel estimation of a MIMO channel. In a particular implementation, a channel training preamble provided by the IEEE 802.11a standard is modified to facilitate MIMO channel estimation.
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9.发明授权Decoding method and apparatus using channel state information for use in a wireless network receiver 有权使用无线网络接收机中使用的信道状态信息的解码方法和装置公开(公告)号：US07359311B1
公开(公告)日：2008-04-15
申请号：US10418694
申请日：2003-04-18
申请人： Milind D. Paranjpe , Brian Hart , David J. Pignatelli , Ender Ayanoglu , Eldad Perahia , Philip J. Ryan , Bretton Lee Douglas , Uri Parker
发明人： Milind D. Paranjpe , Brian Hart , David J. Pignatelli , Ender Ayanoglu , Eldad Perahia , Philip J. Ryan , Bretton Lee Douglas , Uri Parker
IPC分类号： H04J11/00
CPC分类号： H04L27/2647 , H04L1/20 , H04L5/0007 , H04L5/0048 , H04L25/0228
摘要： A method, apparatus, and carrier medium for determining channel state information (CSI) in an OFDM radio receiver. The receiver is for receiving packets of OFDM data as a result of OFDM data being transmitted. The method includes forming an estimate of the channels of the subcarriers for received OFDM data to provide frequency responses of the channels of the subcarriers, and forming a measure of quality (“channel state information,” “CSI”) for the channels of the subcarriers based on the relative strength of the frequency responses. The forming of the CSI does not require estimating the relative amount of noise or interference in each channel. The formed CSI is used in demodulating and decoding received OFDM data.
摘要翻译： 一种用于在OFDM无线电接收机中确定信道状态信息（CSI）的方法，装置和载波介质。 该接收机是用于接收OFDM数据的数据包作为发送OFDM数据的结果。 该方法包括形成用于接收的OFDM数据的子载波的信道的估计，以提供子载波的信道的频率响应，并且形成用于子载波的信道的质量度量（“信道状态信息”，“CSI”） 基于频率响应的相对强度。 CSI的形成不需要估计每个信道中的相对噪声或干扰量。 所形成的CSI用于解调和解码接收的OFDM数据。
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10.发明申请公开(公告)号：US20060104253A1
公开(公告)日：2006-05-18
申请号：US11300960
申请日：2005-12-15
申请人： Bretton Douglas , Eldad Perahia
发明人： Bretton Douglas , Eldad Perahia
IPC分类号： H04Q7/24
摘要： A method including wirelessly receiving a packet at a wireless station belonging to a cell of a wireless network, the network for communicating according to a wireless network standard, each transmitting station of the cell able to transmit a packet that includes cell identification information; and ascertaining at the physical layer level whether or not the received packet is from another station of the cell by ascertaining whether or not the received packet includes the cell identification information of the cell.
摘要翻译： 一种方法，包括在属于无线网络的小区的无线站处无线地接收分组，所述无线网络根据无线网络标准进行通信，所述小区的每个发射台能够发送包括小区识别信息的分组; 并且通过确定所接收的分组是否包括小区的小区识别信息，在物理层级确定接收到的分组是否来自小区的另一个台。
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