公开(公告)号：US20200305103A1

公开(公告)日：2020-09-24

申请号：US16894511

申请日：2020-06-05

申请人： Cheng Chen ,  Juan Fang ,  Po-Kai Huang ,  Laurent Cariou ,  Carlos Cordeiro ,  Jeffrey R. Foerster ,  Dave A. Cavalcanti ,  Roya Doostnejad

发明人： Cheng Chen ,  Juan Fang ,  Po-Kai Huang ,  Laurent Cariou ,  Carlos Cordeiro ,  Jeffrey R. Foerster ,  Dave A. Cavalcanti ,  Roya Doostnejad

IPC分类号： H04W56/00

摘要： Systems, methods, and devices related to an EHT multi-AP group are described. The coordinated APs of the EHT group are synchronized to the coordinator AP using a periodic or non-periodic frame. Each coordinated AP then synchronizes STAs associated with the coordinated AP. In response to an MPDU, either triggered by a trigger frame from the coordinator AP or initiated by the STA, an ACK frame or NDP response is sent by each AP receiving the MPDU. The response to the MPDU is dependent on whether frame aggregation is used, as well as whether the trigger frame triggers transmission of MPDUs from multiple STAs.

公开(公告)号：US20220116833A1

公开(公告)日：2022-04-14

申请号：US17645842

申请日：2021-12-23

申请人： Juan Fang ,  Necati Canpolat ,  Laurent Cariou ,  Dave Cavalcanti ,  Cheng Chen ,  Dibakar Das ,  Roya Doostnejad ,  Po-Kai Huang ,  Minyoung Park ,  Ganesh Venkatesan

发明人： Juan Fang ,  Necati Canpolat ,  Laurent Cariou ,  Dave Cavalcanti ,  Cheng Chen ,  Dibakar Das ,  Roya Doostnejad ,  Po-Kai Huang ,  Minyoung Park ,  Ganesh Venkatesan

IPC分类号： H04W36/00 ,  H04W12/06

摘要： This disclosure describes systems, methods, and devices related to fast transition Wi-Fi roaming operations. A device may generate, during a first association of the device to a first access point, a request to authenticate the device to a second access point; send, during the first association, the request to authenticate; receive, during the first association, a response indicating that the device is authenticated to the second access point; generate, during the first association, a reassociation request to the second access point; determine that a time between sending the request to authenticate and generating the reassociation request is less than a threshold time; send, based on the determination that the time is less than the threshold time, the reassociation request to the second access point; and receive a reassociation response indicative of a second association of the device to the second access point.

公开(公告)号：US20200213160A1

公开(公告)日：2020-07-02

申请号：US16794911

申请日：2020-02-19

申请人： Roya Doostnejad ,  Juan Fang ,  Feng Jiang ,  Laurent Cariou ,  Dave Cavalcanti ,  Xiaogang Chen ,  Timothy F. Cox ,  Jeffrey Foester ,  Po-Kai Huang ,  Qinghua Li ,  Javier Perez-Ramirez

发明人： Roya Doostnejad ,  Juan Fang ,  Feng Jiang ,  Laurent Cariou ,  Dave Cavalcanti ,  Xiaogang Chen ,  Timothy F. Cox ,  Jeffrey Foester ,  Po-Kai Huang ,  Qinghua Li ,  Javier Perez-Ramirez

IPC分类号： H04L25/02

摘要： This disclosure describes systems, methods, and devices related to multi-user uplink channel sounding. A device may determine a channel sounding sequence with one or more access points (APs), wherein the channel sounding sequence comprises a null data packet announcement (NDPA) communicated with at least one of the one or more APs. The device may determine a first group of station devices (STAs) associated with a first basic service set (BSS). The device may cause to send a trigger frame to the first group of STAs to solicit an uplink NDP from each STA of the first group of STAs. The device may identify a first uplink NDP received from a first STA of the first group of STAs. The device may identify a second uplink NDP received from a second STA of a second group of STAs.

公开(公告)号：US20090232241A1

公开(公告)日：2009-09-17

申请号：US12046747

申请日：2008-03-12

申请人： Mahdi Shabany ,  Roya Doostnejad

发明人： Mahdi Shabany ,  Roya Doostnejad

IPC分类号： H04L5/12 ,  H04B7/02

CPC分类号： H04B7/0413 ,  H04L25/03178 ,  H04L25/03318 ,  H04L25/067 ,  H04L27/38 ,  H04L2025/0342 ,  H04L2025/03426

摘要： A low-complexity optimal soft MIMO detector is provided for a general spatial multiplexing (SM) systems with two transmit and NR receive antennas. The computational complexity of the proposed scheme is independent from the operating signal-to-noise ratio (SNR) and grows linearly with the constellation order. It provides the optimal maximum likelihood (ML) solution through the introduction of an efficient Log-likelihood ratio (LLR) calculation method, avoiding the exhaustive search over all possible nodes. The intrinsic parallelism makes it an appropriate option for implementation on DSPs, FPGAs, or ASICs. In specific, this MIMO detection architecture is very suitable to be applied in WiMax receivers based on IEEE 802.16e/m in both downlink (subscriber station) and uplink (base station).

摘要翻译： 为具有两个发射和NR个接收天线的通用空间复用（SM）系统提供了一种低复杂度最优软MIMO检测器。 所提出的方案的计算复杂度独立于操作信噪比（SNR），并与星座顺序线性增长。 它通过引入有效的对数似然比（LLR）计算方法来提供最佳最大似然（ML）解决方案，避免在所有可能的节点上进行详尽的搜索。 内在的并行性使其成为在DSP，FPGA或ASIC上实现的适当选择。 具体来说，这种MIMO检测架构非常适合于在下行链路（用户站）和上行链路（基站）中基于IEEE 802.16e / m的WiMax接收机中应用。

公开(公告)号：US20220345232A1

公开(公告)日：2022-10-27

申请号：US17761940

申请日：2019-12-27

申请人： Oner Orhan ,  Hosein Nikopour ,  Shilpa Talwar ,  Dor Shaviv ,  Roya Doostnejad ,  Adesoji J. Sajuyigbe

发明人： Oner Orhan ,  Hosein Nikopour ,  Shilpa Talwar ,  Dor Shaviv ,  Roya Doostnejad ,  Adesoji J. Sajuyigbe

IPC分类号： H04B17/21 ,  H04B7/06

摘要： Millimeter-wave (mmWave) and sub-mmWave technology, apparatuses, and methods that relate to transceivers and receivers for wireless communications are described. The various aspects include an apparatus of a communication device including an antenna array and processing circuitry coupled to the antenna array. The processing circuitry is configured to initialize a beam tracking algorithm based on received signals received at the antenna array, wherein antenna phases used in the beam tracking are bound by an upper phase limit and a lower phase limit, to generate a beam tracking result. The processing circuitry is further configured to generate a calibration vector based on the beam tracking result and receive subsequent transmissions using a codebook adapted based on the calibration vector.

公开(公告)号：US08060811B2

公开(公告)日：2011-11-15

申请号：US12046747

申请日：2008-03-12

申请人： Mahdi Shabany ,  Roya Doostnejad

发明人： Mahdi Shabany ,  Roya Doostnejad

IPC分类号： H03M13/03

CPC分类号： H04B7/0413 ,  H04L25/03178 ,  H04L25/03318 ,  H04L25/067 ,  H04L27/38 ,  H04L2025/0342 ,  H04L2025/03426

摘要： A low-complexity optimal soft MIMO detector is provided for a general spatial multiplexing (SM) systems with two transmit and NR receive antennas. The computational complexity of the proposed scheme is independent from the operating signal-to-noise ratio (SNR) and grows linearly with the constellation order. It provides the optimal maximum likelihood (ML) solution through the introduction of an efficient Log-likelihood ratio (LLR) calculation method, avoiding the exhaustive search over all possible nodes. The intrinsic parallelism makes it an appropriate option for implementation on DSPs, FPGAs, or ASICs. In specific, this MIMO detection architecture is very suitable to be applied in WiMax receivers based on IEEE 802.16e/m in both downlink (subscriber station) and uplink (base station).

摘要翻译： 为具有两个发射和NR个接收天线的通用空间复用（SM）系统提供了一种低复杂度最优软MIMO检测器。 所提出的方案的计算复杂度独立于操作信噪比（SNR），并与星座顺序线性增长。 它通过引入有效的对数似然比（LLR）计算方法来提供最佳最大似然（ML）解决方案，避免在所有可能的节点上进行详尽的搜索。 内在的并行性使其成为在DSP，FPGA或ASIC上实现的适当选择。 具体来说，这种MIMO检测架构非常适合于在下行链路（用户站）和上行链路（基站）中基于IEEE 802.16e / m的WiMax接收机中应用。

公开(公告)号：US09491776B2

公开(公告)日：2016-11-08

申请号：US14498526

申请日：2014-09-26

申请人： Ehsan Aryafar ,  Roya Doostnejad ,  Shilpa Talwar

发明人： Ehsan Aryafar ,  Roya Doostnejad ,  Shilpa Talwar

IPC分类号： H04W72/12 ,  H04L5/14 ,  H04L5/00 ,  H04W72/04

CPC分类号： H04W72/1231 ,  H04L5/0073 ,  H04L5/14 ,  H04W72/046

摘要： Certain embodiments herein relate to scheduling interference between wireless devices in a manner that reduced interference associated with full duplex communication. Signal strength and interference information associated with communication between wireless devices may be collected and forwarded to a processing device, such as a central controller. The central controller may utilize such information to generate a conflict graph that depicts interference relationships between the wireless devices. Using the conflict graph, the central controller may determine whether requested communications may be scheduled along with concurrently scheduled communications without resulting in interference affecting the communications. In one embodiment, a requested communication may be scheduled with other concurrently scheduled communications if the aggregated throughput is increased with the addition of the requested communication.

摘要翻译： 本文中的某些实施例涉及以减少与全双工通信相关联的干扰的方式来调度无线设备之间的干扰。 可以收集与无线设备之间的通信相关联的信号强度和干扰信息，并将其转发到诸如中央控制器的处理设备。 中央控制器可以利用这样的信息来产生描绘无线设备之间的干扰关系的冲突图。 使用冲突图，中央控制器可以确定所请求的通信可以与并行调度的通信一起被调度，而不会造成影响通信的干扰。 在一个实施例中，如果通过添加所请求的通信来增加聚合的吞吐量，则可以利用其他并行调度的通信来调度所请求的通信。

公开(公告)号：US20160029404A1

公开(公告)日：2016-01-28

申请号：US14498526

申请日：2014-09-26

申请人： EHSAN ARYAFAR ,  Roya Doostnejad ,  Shilpa Talwar

发明人： EHSAN ARYAFAR ,  Roya Doostnejad ,  Shilpa Talwar

IPC分类号： H04W72/12 ,  H04L5/14

CPC分类号： H04W72/1231 ,  H04L5/0073 ,  H04L5/14 ,  H04W72/046

摘要： Certain embodiments herein relate to scheduling interference between wireless devices in a manner that reduced interference associated with full duplex communication. Signal strength and interference information associated with communication between wireless devices may be collected and forwarded to a processing device, such as a central controller. The central controller may utilize such information to generate a conflict graph that depicts interference relationships between the wireless devices. Using the conflict graph, the central controller may determine whether requested communications may be scheduled along with concurrently scheduled communications without resulting in interference affecting the communications. In one embodiment, a requested communication may be scheduled with other concurrently scheduled communications if the aggregated throughput is increased with the addition of the requested communication.

摘要翻译： 本文中的某些实施例涉及以减少与全双工通信相关联的干扰的方式来调度无线设备之间的干扰。 可以收集与无线设备之间的通信相关联的信号强度和干扰信息，并将其转发到诸如中央控制器的处理设备。 中央控制器可以利用这样的信息来产生描绘无线设备之间的干扰关系的冲突图。 使用冲突图，中央控制器可以确定所请求的通信可以与并行调度的通信一起被调度，而不会造成影响通信的干扰。 在一个实施例中，如果通过添加所请求的通信来增加聚合的吞吐量，则可以利用其他并发调度的通信来调度所请求的通信。

公开(公告)号：US20120014483A1

公开(公告)日：2012-01-19

申请号：US13242808

申请日：2011-09-23

申请人： Mahdi Shabany ,  Roya Doostnejad

发明人： Mahdi Shabany ,  Roya Doostnejad

IPC分类号： H04L27/06

CPC分类号： H04B7/0413 ,  H04L25/03178 ,  H04L25/03318 ,  H04L25/067 ,  H04L27/38 ,  H04L2025/0342 ,  H04L2025/03426

摘要： A low-complexity optimal soft MIMO detector is provided for a general spatial multiplexing (SM) systems with two transmit and NR receive antennas. The computational complexity of the proposed scheme is independent from the operating signal-to-noise ratio (SNR) and grows linearly with the constellation order. It provides the optimal maximum likelihood (ML) solution through the introduction of an efficient Log-likelihood ratio (LLR) calculation method, avoiding the exhaustive search over all possible nodes. The intrinsic parallelism makes it an appropriate option for implementation on DSPs, FPGAs, or ASICs. In specific, this MIMO detection architecture is very suitable to be applied in WiMax receivers based on IEEE 802.16e/m in both downlink (subscriber station) and uplink (base station).

摘要翻译： 为具有两个发射和NR个接收天线的通用空间复用（SM）系统提供了一种低复杂度最优软MIMO检测器。 所提出的方案的计算复杂度独立于操作信噪比（SNR），并与星座顺序线性增长。 它通过引入有效的对数似然比（LLR）计算方法来提供最佳最大似然（ML）解决方案，避免在所有可能的节点上进行详尽的搜索。 内在的并行性使其成为在DSP，FPGA或ASIC上实现的适当选择。 具体来说，这种MIMO检测架构非常适合于在下行链路（用户站）和上行链路（基站）中基于IEEE 802.16e / m的WiMax接收机中应用。

公开(公告)号：US08799751B2

公开(公告)日：2014-08-05

申请号：US13242808

申请日：2011-09-23

申请人： Mahdi Shabany ,  Roya Doostnejad

发明人： Mahdi Shabany ,  Roya Doostnejad

IPC分类号： H03M13/03

CPC分类号： H04B7/0413 ,  H04L25/03178 ,  H04L25/03318 ,  H04L25/067 ,  H04L27/38 ,  H04L2025/0342 ,  H04L2025/03426

摘要： A low-complexity optimal soft MIMO detector is provided for a general spatial multiplexing (SM) systems with two transmit and NR receive antennas. The computational complexity of the proposed scheme is independent from the operating signal-to-noise ratio (SNR) and grows linearly with the constellation order. It provides the optimal maximum likelihood (ML) solution through the introduction of an efficient Log-likelihood ratio (LLR) calculation method, avoiding the exhaustive search over all possible nodes. The intrinsic parallelism makes it an appropriate option for implementation on DSPs, FPGAs, or ASICs. In specific, this MIMO detection architecture is very suitable to be applied in WiMax receivers based on IEEE 802.16e/m in both downlink (subscriber station) and uplink (base station).

摘要翻译： 为具有两个发射和NR个接收天线的通用空间复用（SM）系统提供了一种低复杂度最优软MIMO检测器。 所提出的方案的计算复杂度独立于操作信噪比（SNR），并与星座顺序线性增长。 它通过引入有效的对数似然比（LLR）计算方法来提供最佳最大似然（ML）解决方案，避免在所有可能的节点上进行详尽的搜索。 内在的并行性使其成为在DSP，FPGA或ASIC上实现的适当选择。 具体来说，这种MIMO检测架构非常适合于在下行链路（用户站）和上行链路（基站）中基于IEEE 802.16e / m的WiMax接收机中应用。