公开(公告)号：US09712231B2

公开(公告)日：2017-07-18

申请号：US14252646

申请日：2014-04-14

Applicant: BROADCOM CORPORATION

Inventor： Yong Liu ,  Ron Porat ,  Nihar Jindal ,  Vinko Erceg ,  Matthew James Fischer ,  Chiu Ngok Eric Wong

IPC: H04B7/26 ,  H04W74/00

CPC classification number: H04B7/2612 ,  H04W74/006

Abstract: A wireless communication device is implemented to include a communication interface and a processor. The processor is configured to process communications associated with the other wireless communication devices within the wireless communication system to determine one or more traffic characteristics of those communications as well as one or more class characteristics of the other wireless communication devices. The processor is configured to classify the communications into one or more access categories based on the one or more traffic characteristics and is configured to classify the other devices into one or more device class categories based on the one or more class characteristics. The processor is then configured to generate one or more channel access control signals based on these classifications. The communication interface of the device is configured to transmit the one or more channel access control signals to one or more of the other devices.

公开(公告)号：US09548800B2

公开(公告)日：2017-01-17

申请号：US14186868

申请日：2014-02-21

Applicant: Broadcom Corporation

Inventor： Nihar Jindal

IPC: H04L5/00 ,  H04B7/04 ,  H04B7/06 ,  H04W76/00 ,  H04W84/12 ,  H04W88/06 ,  H04W88/08

CPC classification number: H04B7/0413 ,  H04B7/0689 ,  H04B7/0691 ,  H04L5/001 ,  H04L5/0023 ,  H04L5/0048 ,  H04L5/0091 ,  H04L5/0098 ,  H04W76/00 ,  H04W76/15 ,  H04W84/12 ,  H04W88/06 ,  H04W88/08

Abstract: Embodiments provide systems and methods for enabling a wireless multi-access communication system having a first frequency band and a second frequency band. The first frequency band can be used to establish a first channel using a non-Massive Multiple Input Multiple Output (M-MIMO) radio access technology (RAT). The first channel can be used to broadcast downlink/uplink control information (and, optionally, data) between an access point (AP) and a user device. The second frequency band can be used to establish a second channel using a M-MIMO RAT. The second channel can be used to communicate high speed downlink/uplink data between an AP and a user device. The non-M-MIMO RAT and the M-MIMO RAT can be of the same RAT family or of different RAT families.

Abstract translation: 实施例提供了用于启用具有第一频带和第二频带的无线多址通信系统的系统和方法。 可以使用第一频带来建立使用非质量多输入多输出（M-MIMO）无线电接入技术（RAT）的第一信道。 第一信道可用于在接入点（AP）和用户设备之间广播下行链路/上行链路控制信息（以及可选地，数据）。 可以使用第二频带来建立使用M-MIMO RAT的第二信道。 第二通道可用于在AP和用户设备之间传送高速下行链路/上行链路数据。 非M-MIMO RAT和M-MIMO RAT可以是同一RAT系列或不同RAT系列。

公开(公告)号：US09351179B2

公开(公告)日：2016-05-24

申请号：US14268677

申请日：2014-05-02

Applicant: Broadcom Corporation

Inventor： David Garrett ,  Nihar Jindal ,  Jun Zheng

IPC: H04W24/02 ,  H04L25/02

CPC classification number: H04W24/02 ,  H04L25/0222 ,  H04L25/0224 ,  H04L25/0228 ,  H04W8/005 ,  H04W48/12

Abstract: Systems and methods can analyze a present channel estimation and a previous channel estimation and/or two or more prior channel estimations to improve communication performance, sense environmental conditions, and make location and velocity determinations. The methods can include: (a) sending, by a transmitter, a first sounding frame and a second sounding frame to a receiver; (b) receiving, by the transmitter, a first channel estimation response from a receiver responsive to the first sounding frame, and a second channel estimation response from the receiver responsive to the second sounding frame; and (c) detecting, by the transmitter, based at least on the first channel estimation response and the second channel estimation response, if a change in characteristics of a channel between the transmitter and the receiver occurred between the first sounding frame and the second sounding frame.

Abstract translation: 系统和方法可以分析当前信道估计和先前的信道估计和/或两个或多个先前的信道估计，以改善通信性能，感测环境条件，并进行位置和速度确定。 所述方法可以包括：（a）由发射机向接收机发送第一探测帧和第二探测帧; （b）由所述发射机响应于所述第一探测帧接收来自接收机的第一信道估计响应，以及响应于所述第二探测帧的来自所述接收机的第二信道估计响应; 以及（c）至少基于第一信道估计响应和第二信道估计响应，由发射机检测发射机和接收机之间的信道的特性的变化是否发生在第一探测帧和第二探测帧之间 帧。

公开(公告)号：US09125081B2

公开(公告)日：2015-09-01

申请号：US14213031

申请日：2014-03-14

Applicant: Broadcom Corporation

Inventor： Arogyaswami Paulraj ,  Murat Mese ,  Yan Wang ,  Nihar Jindal ,  Louay Jalloul ,  Amin Mobasher ,  Sam Alex

IPC: H04W4/00 ,  H04W28/02 ,  H04B7/04 ,  H04W24/08 ,  H04W72/04 ,  H04L5/00 ,  H04W24/02 ,  H04W16/00 ,  H04B7/06 ,  H04W88/08

CPC classification number: H04W72/0433 ,  H04B7/0413 ,  H04B7/0452 ,  H04B7/0617 ,  H04L5/0023 ,  H04L5/0092 ,  H04L5/0094 ,  H04W16/00 ,  H04W16/04 ,  H04W24/02 ,  H04W24/08 ,  H04W28/0215 ,  H04W72/04 ,  H04W88/08 ,  H04W88/10

Abstract: Systems and methods for channel assignment configuration in a multiple access point (AP) environment are provided. The multiple APs can be homogeneous or heterogeneous and can implement one or more radio access technologies (RATs), including Massive Multiple Input Multiple Output (M-MIMO) RATs. A channel assignment configuration for a user equipment (UE) can identify one or more communication channels to be established to serve the UE by one or more of the APs.

Abstract translation: 提供了多接入点（AP）环境中信道分配配置的系统和方法。 多个AP可以是同质的或异构的，并且可以实现一个或多个无线电接入技术（RAT），包括大规模多输入多输出（M-MIMO）RAT。 用户设备（UE）的信道分配配置可以识别一个或多个待建立的通信信道，以便由一个或多个AP服务于UE。

公开(公告)号：US20150222406A1

公开(公告)日：2015-08-06

申请号：US14248220

申请日：2014-04-08

Applicant: BROADCOM CORPORATION

Inventor： Jun Zheng ,  Nihar Jindal ,  David Christopher Garrett

IPC: H04L5/00 ,  H04B7/06 ,  H04B7/04

CPC classification number: H04L5/0055 ,  H04B7/0417 ,  H04B7/0452 ,  H04B7/0626 ,  H04L1/1685 ,  H04L1/1825 ,  H04L5/0057

Abstract: A method for improving multiple-user (MU) multiple-input-multiple-output (MIMO) acknowledge (ACK) protocol efficiency includes: receiving a sounding frame from a device, sending a feedback response, which includes quantized channel state information (CSI) to the device, receiving an MU physical-layer protocol data unit (PPDU) frame from the device, and in response to receiving the MU PPDU frame, sending an ACK frame to the device without receiving a polling frame prior to the ACK frame.

Abstract translation: 一种用于改善多用户（MU）多输入多输出（MIMO）确认（ACK）协议效率的方法包括：从设备接收探测帧，发送反馈响应，其包括量化信道状态信息（CSI） 向设备接收来自设备的MU物理层协议数据单元（PPDU）帧，并且响应于接收到MU PPDU帧，在ACK帧之前不接收到轮询帧来向设备发送ACK帧。

公开(公告)号：US20150023449A1

公开(公告)日：2015-01-22

申请号：US14510313

申请日：2014-10-09

Applicant: BROADCOM CORPORATION

Inventor： Ron Porat ,  Nihar Jindal

IPC: H04L27/26 ,  H04L5/00

CPC classification number: H04L5/0048 ,  H04L5/0007 ,  H04L27/2613

Abstract: A wireless communication device includes a communication interface and a processor and is configured to generate a preamble of an OFDM packet that includes signal fields (SIGs) that specify first characteristics of a remainder of the OFDM packet that follows the SIG fields. A first at least one SIG includes information to specify second characteristics of a second at least one SIG that follows the first at least one SIG. The wireless communication device then transmits the OFDM packet to another wireless communication device. The second characteristics specifies any number of characteristics including any one or more of a size of a GI between the first at least one SIG and the second at least one SIG, a MCS used to generate the second at least one SIG, a length of the second at least one SIG, or a number of OFDM symbols of the second at least one SIG.

Abstract translation: 无线通信设备包括通信接口和处理器，并且被配置为生成包括指定跟随SIG字段的OFDM分组的其余部分的第一特征的信号字段（SIG）的OFDM分组的前导码。 第一至少一个SIG包括用于指定第一至少一个SIG之后的第二至少一个SIG的第二特征的信息。 无线通信设备然后将OFDM分组发送到另一无线通信设备。 第二特征指定包括在第一至少一个SIG和第二至少一个SIG之间的GI大小中的任何一个或多个的任何数量的特征，用于生成第二至少一个SIG的MCS， 第二至少一个SIG，或第二至少一个SIG的多个OFDM符号。

公开(公告)号：US20140362840A1

公开(公告)日：2014-12-11

申请号：US14296733

申请日：2014-06-05

Applicant: BROADCOM CORPORATION

Inventor： Chiu Ngok Eric Wong ,  Ron Porat ,  Nihar Jindal ,  Matthew James Fischer ,  Vinko Erceg

IPC: H04W88/06 ,  H04W84/12

CPC classification number: H04W88/06 ,  H04L1/00 ,  H04L1/0003 ,  H04L1/0009 ,  H04W72/12 ,  H04W84/12

Abstract: Coordination and synchronization is performed between two or more wireless network managers (e.g., access points (APs)). A first wireless network manager supports first communications with first other wireless communication devices, and a second wireless network manager supports second communications with those first and/or second other wirelessly case devices. The first and second wireless network managers also support communications with one another to coordinate the first and second communications supported with the first and/or second other wireless communication devices. Examples of coordination include selection of which other wireless communication devices are serviced or in communication with which of the first and second wireless network managers, selection of operational parameters (e.g., modulation coding set (MCS), beamforming, frequency band assignment, channel assignment, scheduling information, transmit power, etc.) for the first and second wireless communication devices, synchronization to a common clock (e.g., using timing synchronization function (TSF)).

Abstract translation: 在两个或多个无线网络管理器（例如，接入点（AP））之间执行协调和同步。 第一无线网络管理器支持与第一其他无线通信设备的第一通信，并且第二无线网络管理器支持与那些第一和/或第二其他无线情况设备的第二通信。 第一和第二无线网络管理器还支持彼此进行通信，以协调第一和/或第二其他无线通信设备支持的第一和第二通信。 协调的示例包括选择哪些其他无线通信设备被服务或与第一和第二无线网络管理者中的哪一个通信，选择操作参数（例如，调制编码集（MCS），波束成形，频带分配，信道分配， 调度信息，发送功率等），与公共时钟的同步（例如，使用定时同步功能（TSF））。

公开(公告)号：US20140160957A1

公开(公告)日：2014-06-12

申请号：US13730771

申请日：2012-12-28

Applicant: BROADCOM CORPORATION

Inventor： Jun Zheng ,  Nihar Jindal ,  Sirikiat Ariyavisitakul ,  Eric Ojard

IPC: H04W24/02

CPC classification number: H04W24/02 ,  H04L5/0048 ,  H04L25/0224 ,  H04W24/06

Abstract: A dedicated calibration device may be utilized by a wireless transceiver device, such as a base station, to compute compensation matrices. The wireless transceiver device and the dedicated calibration device can exchange training sequence signals. Based on the exchanged training sequence signals, the wireless transceiver device and the dedicated calibration device can estimate overall baseband to baseband channel responses taking into account the amplitude and phase responses of the respective transmit and receive radio chains, and the wireless transceiver device can determine the compensation matrices. Furthermore, the wireless transceiver device can estimate a baseband-to-baseband uplink channel response relative to actual user equipment, approximate a downlink channel response using only one of the determined compensation matrices, and perform beamforming to the actual user equipment using the approximated downlink channel response.

Abstract translation: 专用校准装置可以由无线收发器装置（例如基站）利用来计算补偿矩阵。 无线收发器装置和专用校准装置可以交换训练序列信号。 基于交换的训​​练序列信号，无线收发器设备和专用校准设备可以考虑到相应的发射和接收无线电链的幅度和相位响应来估计总体基带到基带信道响应，并且无线收发器设备可以确定 补偿矩阵。 此外，无线收发器设备可以估计相对于实际用户设备的基带到基带上行链路信道响应，仅使用所确定的补偿矩​​阵之一近似下行链路信道响应，并且使用近似下行链路信道对实际用户设备执行波束成形 响应。

公开(公告)号：US09564956B2

公开(公告)日：2017-02-07

申请号：US14270975

申请日：2014-05-06

Applicant: Broadcom Corporation

Inventor： David Garrett ,  Nihar Jindal ,  Jun Zheng ,  Srinath Puducheri Sundaravaradhan

IPC: H04B7/06 ,  H04B7/04 ,  H04L25/02

CPC classification number: H04B7/0617 ,  H04B7/0452 ,  H04B7/0619 ,  H04L25/0204 ,  H04L25/0226

Abstract: A systems and method of channel estimation can be used in wireless environments. The systems and method can: (a) determine, by a transmitter, a number of receivers with which to communicate wirelessly, the number of receivers being at least one and corresponding to at least a first receiver; and (b) generate, by the transmitter, a frame to transmit to the first receiver, the frame generated based on a total number of receivers that is higher than the determined number of receivers.

Abstract translation: 可以在无线环境中使用信道估计的系统和方法。 系统和方法可以：（a）由发射机确定与无线通信的接收机的数量，接收机的数目至少为一个，并对应于至少第一接收机; 和（b）由所述发射机产生一帧以发送给所述第一接收机，所述帧基于接收机总数高于所确定的接收机数量而生成。

公开(公告)号：US09379790B2

公开(公告)日：2016-06-28

申请号：US14142581

申请日：2013-12-27

Applicant: Broadcom Corporation

Inventor： Nihar Jindal ,  Murat Mese ,  Arogyaswami Paulraj ,  Louay Jalloul ,  Amin Mobasher ,  Sam Alex

IPC: H04B7/04 ,  H04B7/02 ,  H04B7/06 ,  H04W16/28 ,  H04W72/04

CPC classification number: H04B7/0413 ,  H04B7/024 ,  H04B7/0617 ,  H04W16/28 ,  H04W72/046

Abstract: In wireless operating environments, wireless user devices are often within the coverage area of multiple base stations. The base station providing the best uplink for the user device may be different than the base station providing the best downlink for the user device. Systems and techniques for asymmetric uplink and downlink communications for a user device are provided. In embodiments, the user device initially synchronizes with a base station. Both the uplink and downlink are initially served by this base station. A determination is then made whether to handoff the downlink for the user device to another base station. When a determination is indicated, the downlink is handed off to the second base station. Thereafter, periodic measurements are made. The determinations whether to handoff the uplink and downlink for the user device are made independently.

Abstract translation: 在无线操作环境中，无线用户设备通常在多个基站的覆盖区域内。 为用户设备提供最佳上行链路的基站可以不同于为用户设备提供最佳下行链路的基站。 提供了用于用户设备的用于不对称上行链路和下行链路通信的系统和技术。 在实施例中，用户设备最初与基站同步。 上行链路和下行链路两者最初由该基站服务。 然后确定是否将用户设备的下行链路切换到另一个基站。 当指示确定时，下行链路被切换到第二基站。 此后，进行周期测量。 决定是否切换用户设备的上行链路和下行链路是独立进行的。