公开(公告)号：US09768843B2

公开(公告)日：2017-09-19

申请号：US14222202

申请日：2014-03-21

Applicant: Broadcom Corporation

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

IPC: H04B7/04 ,  H04B7/0456 ,  H04B7/0413 ,  H04B7/06

CPC classification number: H04B7/0456 ,  H04B7/0413 ,  H04B7/0617 ,  H04B7/0691

Abstract: Systems and methods for enabling a wireless backhaul network between access points (APs) in a wireless network are provided. In an embodiment, the wireless backhaul network is enabled using a Massive Multiple Input Multiple Output (MIMO) radio access technology (RAT). In another embodiment, the wireless backhaul network is established using the same RAT as used by the APs to serve user devices, and can utilize the same time and frequency resources used for user communication.

公开(公告)号：US09729285B2

公开(公告)日：2017-08-08

申请号：US14302612

申请日：2014-06-12

Applicant: BROADCOM CORPORATION

Inventor： Ron Porat ,  Matthew James Fischer ,  Nihar Jindal ,  Vinko Erceg

IPC: H04W4/00 ,  H04L5/00

CPC classification number: H04L5/003 ,  H04L5/0007 ,  H04L5/0053

Abstract: A communication device includes a processor configured to generate OFDMA packets using various OFDMA packet structures and to transmit such OFDMA packets, via a communication interface, to at least one other communication device. The processor is also configured to receive, interpret, and process such OFDMA packets. One example of an OFDMA packet includes common SIG for two or more other wireless communication devices modulated across all sub-carriers of the OFDMA packet. The common SIG is followed by first SIG and first data for a first other wireless communication device modulated across first subset of the sub-carriers of the OFDMA packet and is also followed by second SIG and second data for a second other wireless communication device modulated across second subset of the sub-carriers of the OFDMA packet. Another example of an OFDMA packet includes the common SIG followed directly by first data and second data modulated as described above.

公开(公告)号：US09496933B2

公开(公告)日：2016-11-15

申请号：US14142310

申请日：2013-12-27

Applicant: Broadcom Corporation

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

IPC: H04W4/00 ,  H04B7/04 ,  H04L5/00 ,  H04B7/06 ,  H04W88/10

CPC classification number: H04B7/0452 ,  H04B7/0689 ,  H04L5/0005 ,  H04L5/0007 ,  H04L5/0053 ,  H04W88/10

Abstract: As wireless networks evolve, network providers may utilize legacy LTE devices as well as devices that support massive multi-input, multiple output (M-MIMO). Systems and methods for simultaneously servicing legacy LTE devices and M-MIMO devices are provided. In embodiments, a transmission zone for M-MIMO communications is defined within a legacy, non M-MIMO radio frame. The location of the M-MIMO transmission zone is transmitted to user devices. For example, an identification of the location of the M-MIMO transmission zone is transmitted in a system information message. In a further example, the location of the M-MIMO transmission zone is transmitted in the downlink control information. The location of the M-MIMO transmission zone may be defined dynamically based on a variety of criteria. In addition or alternatively, a set of pre-defined transmission zones may be utilized.

Abstract translation: 随着无线网络的发展，网络提供商可以利用传统的LTE设备以及支持大量多输入多输出（M-MIMO）的设备。 提供了用于同时维护传统LTE设备和M-MIMO设备的系统和方法。 在实施例中，在传统的非M-MIMO无线电帧内定义用于M-MIMO通信的传输区域。 M-MIMO传输区的位置被传送到用户设备。 例如，在系统信息消息中发送M-MIMO传输区域的位置的标识。 在另一示例中，在下行控制信息中发送M-MIMO传输区的位置。 M-MIMO传输区域的位置可以基于各种标准动态定义。 另外或替代地，可以使用一组预定义的传输区域。

公开(公告)号：US09287995B2

公开(公告)日：2016-03-15

申请号：US14039462

申请日：2013-09-27

Applicant: Broadcom Corporation

Inventor： Nihar Jindal ,  Jun Shi ,  Sriram Sundararajan ,  Arya Behzad ,  Marcellus Forbes ,  Ling Su

IPC: H04W4/00 ,  H04B15/00 ,  H04L5/00

CPC classification number: H04B15/00 ,  H04L5/0048

Abstract: A communication device, such as a smart phone, includes transmit/receive logic to cancel an interfering signal component. The interfering signal component may originate from a communication interface on the device itself. For example, transmissions from the communication interface may interfere with received signals at other communication interfaces on the device. Transmit/receive logic on others of the communication interfaces may use known characteristics of the interfering signal component to cancel the interfering signal component.

Abstract translation: 诸如智能电话的通信设备包括用于消除干扰信号分量的发送/接收逻辑。 干扰信号分量可以来自设备本身的通信接口。 例如，来自通信接口的传输可能干扰设备上其他通信接口处的接收信号。 通信接口的其他发送/接收逻辑可以使用干扰信号分量的已知特征来消除干扰信号分量。

公开(公告)号：US09197473B2

公开(公告)日：2015-11-24

申请号：US14297739

申请日：2014-06-06

Applicant: Broadcom Corporation

Inventor： Ron Porat ,  Nihar Jindal

IPC: H04L5/00 ,  H04L27/26 ,  H04L29/06

CPC classification number: H04L27/2602 ,  H04L5/0007 ,  H04L5/003 ,  H04L5/0053 ,  H04L27/2613 ,  H04L27/2634 ,  H04L69/22

Abstract: A wireless communication device (‘device’) is configured to generate an OFDM/A packet that includes at least one OFDM/A symbol that includes at least one SIG having SIG information modulated on only even (or odd) sub-carriers and does not include any information modulated on odd (or even) sub-carriers of a set of OFDM/A sub-carriers. The set of OFDM/A sub-carriers may be all or less than all of available sub-carriers. The device may generate the packet to include a preamble and a payload such that the payload, which may be composed of at least one additional OFDM/A symbol, includes data modulated on some or all of the sub-carriers of the set of OFDM/A sub-carriers. The device can modulate and transmit SIG information and data differently within the preamble and the payload (e.g., with higher ordered modulation or MCS for the data and less power per sub-carrier than for the preamble).

Abstract translation: 无线通信设备（“设备”）被配置为生成包括至少一个OFDM / A符号的OFDM / A分组，OFDM / A码元包括至少一个SIG，其具有仅在偶数（或奇数）个子载波上调制的信号信息，并且不 包括在一组OFDM / A子载波的奇数（或甚至）个子载波上调制的任何信息。 OFDM / A子载波的集合可以全部或者小于所有可用的子载波。 设备可以生成分组以包括前同步码和有效载荷，使得可以由至少一个附加OFDM / A符号组成的有效载荷包括在OFDM / A / NACK中的一些或全部子载波上调制的数据， 一个子载体。 该装置可以在前同步码和有效载荷内（例如，对于数据具有更高阶调制或MCS，并且每个子载波的功率比对于前同步码小），可以不同地调制和发送SIG信息和数据。

公开(公告)号：US20150236763A1

公开(公告)日：2015-08-20

申请号：US14263766

申请日：2014-04-28

Applicant: Broadcom Corporation

Inventor： David Garrett ,  Jun Zheng ,  Nihar Jindal

IPC: H04B7/04 ,  H04B7/12 ,  H04L25/02

CPC classification number: H04B7/0617 ,  H04B7/0408 ,  H04B7/0452 ,  H04B7/0626 ,  H04B7/12 ,  H04L1/06 ,  H04L1/0618 ,  H04L25/0204 ,  H04L25/0224 ,  H04L25/0228

Abstract: In some aspects, the disclosure is directed to methods and systems for performing channel estimation between a beamformer and a beamformee. A beamformer can determine that a beamformee is configured to perform channel estimation for up to a pre-configured number of transmit spatial streams from the beamformer. The pre-configured number of transmit spatial streams can be less than a plurality of transmit spatial streams of the beamformer. The beamformer can determine a plurality of subsets of transmit spatial streams from the plurality of transmit spatial streams. The beamformer can send a plurality of sounding frames to the beamformee for channel estimation based at least on the determined plurality of subsets of transmit spatial streams.

Abstract translation: 在一些方面，本公开涉及用于在波束形成器和波束形成器之间执行信道估计的方法和系统。 波束形成器可以确定波束形成器被配置为执行来自波束形成器的高达预配置数量的发射空间流的信道估计。 预配置的发射空间流数可以小于波束形成器的多个发射空间流。 波束形成器可以从多个发射空间流中确定发射空间流的多个子集。 波束形成器可以至少基于确定的多个传输空间流子集，向波束形成器发送多个探测帧用于信道估计。

公开(公告)号：US20150236411A1

公开(公告)日：2015-08-20

申请号：US14275291

申请日：2014-05-12

Applicant: Broadcom Corporation

Inventor： David Garrett ,  Jun Zheng ,  Nihar Jindal

IPC: H01Q3/24 ,  H04L5/00

CPC classification number: H01Q3/24 ,  H04B7/0617 ,  H04B7/0689 ,  H04L5/0048

Abstract: In some aspects, the disclosure is directed to methods and systems for transmitting to static and non-static devices. An access point having a plurality of antennas can send a plurality of sounding frames from the plurality of antennas to a plurality of devices. The access point can identify, based on responses to the plurality of sounding frames, at least one static device from the plurality of devices. The access point can assign, based on the responses to the plurality of sounding frames, to each of the at least one static device, a corresponding one of the plurality of antennas for operation in a directional mode for transmissions to the corresponding static device, and the remaining antennas from the plurality of antennas for operation in an omnidirectional mode.

Abstract translation: 在一些方面，本公开涉及用于传送到静态和非静态设备的方法和系统。 具有多个天线的接入点可以将多个探测帧从多个天线发送到多个设备。 接入点可以基于对多个探测帧的响应来识别来自多个设备的至少一个静态设备。 所述接入点可以基于对所述多个探测帧的响应，将所述至少一个静态设备中的每一个分配给所述多个天线中的相应一个天线，用于以定向模式操作以传输到相应的静态设备，以及 来自多个天线的剩余天线用于全向模式的操作。

公开(公告)号：US09112563B1

公开(公告)日：2015-08-18

申请号：US14279162

申请日：2014-05-15

Applicant: BROADCOM CORPORATION

Inventor： Nihar Jindal

IPC: H04L27/00 ,  H04B7/06 ,  H04B7/04 ,  H04L25/02 ,  H04L27/26

CPC classification number: H04B7/0617 ,  H04B7/061 ,  H04L5/0023 ,  H04L25/0204 ,  H04L25/022 ,  H04L27/2626

Abstract: A method for per-tone transmit (TX) antenna selection beamforming includes obtaining an estimate of a per-tone channel amplitude information corresponding to each antenna of multiple antennas of a transmitter. A spatial mapping matrix of the transmitter is determined using the obtained estimate of the per-tone channel amplitude information corresponding to the antennas. Each tone includes an orthogonal frequency-division multiplexing (OFDM) sub-carrier, and the per-tone channel amplitude information corresponding to each antenna is associated with a propagation channel between that antenna and a receive (RX) antenna of a receiver. The spatial mapping matrix is determined to allow transmission of data corresponding to each tone through one of the antennas, and to allow each of the antennas to be active during a transmission time of the transmitter.

Abstract translation: 用于每音调发射（TX）天线选择波束成形的方法包括获得与发射机的多个天线的每个天线相对应的每个音调信道幅度信息的估计。 使用所获得的与天线对应的每音调信道幅度信息的估计来确定发射机的空间映射矩阵。 每个音调包括正交频分复用（OFDM）子载波，并且对应于每个天线的每音调信道幅度信息与该天线与接收机的接收（RX）天线之间的传播信道相关联。 空间映射矩阵被确定为允许通过天线中的一个发送对应于每个音调的数据，并且允许每个天线在发射机的传输时间期间有效。

公开(公告)号：US20140362935A1

公开(公告)日：2014-12-11

申请号：US14297739

申请日：2014-06-06

Applicant: BROADCOM CORPORATION

Inventor： Ron Porat ,  Nihar Jindal

IPC: H04L27/26 ,  H04L29/06

CPC classification number: H04L27/2602 ,  H04L5/0007 ,  H04L5/003 ,  H04L5/0053 ,  H04L27/2613 ,  H04L27/2634 ,  H04L69/22

Abstract: A wireless communication device (‘device’) is configured to generate an OFDM/A packet that includes at least one OFDM/A symbol that includes at least one SIG having SIG information modulated on only even (or odd) sub-carriers and does not include any information modulated on odd (or even) sub-carriers of a set of OFDM/A sub-carriers. The set of OFDM/A sub-carriers may be all or less than all of available sub-carriers. The device may generate the packet to include a preamble and a payload such that the payload, which may be composed of at least one additional OFDM/A symbol, includes data modulated on some or all of the sub-carriers of the set of OFDM/A sub-carriers. The device can modulate and transmit SIG information and data differently within the preamble and the payload (e.g., with higher ordered modulation or MCS for the data and less power per sub-carrier than for the preamble).

Abstract translation: 无线通信设备（“设备”）被配置为生成包括至少一个OFDM / A符号的OFDM / A分组，OFDM / A码元包括至少一个SIG，其具有仅在偶数（或奇数）个子载波上调制的信号信息，并且不 包括在一组OFDM / A子载波的奇数（或甚至）个子载波上调制的任何信息。 OFDM / A子载波的集合可以全部或者小于所有可用的子载波。 设备可以生成分组以包括前同步码和有效载荷，使得可以由至少一个附加OFDM / A符号组成的有效载荷包括在OFDM / A码组的一些或全部子载波上调制的数据， 一个子载体。 该装置可以在前同步码和有效载荷内（例如，对于数据具有更高阶调制或MCS，并且每个子载波的功率比对于前同步码小），可以不同地调制和发送SIG信息和数据。

公开(公告)号：US09906964B2

公开(公告)日：2018-02-27

申请号：US14510510

申请日：2014-10-09

Applicant: BROADCOM CORPORATION

Inventor： Ron Porat ,  Nihar Jindal

IPC: H04W24/02 ,  H04L5/00 ,  H04L27/34

CPC classification number: H04W24/02 ,  H04L5/00 ,  H04L5/0037 ,  H04L5/0046 ,  H04L27/3488

Abstract: A wireless communication device includes a communication interface and a processor that operate to generate a first transmission stream by processing first information based on first parameter(s) and a second transmission stream by processing second information based on second parameter(s). In some examples, the second at least one parameter is relatively less robust than the first at least one parameter, and the second information augments the first information when combined with the first information. The wireless communication device then transmits the first transmission stream and the second transmission stream to at least one other wireless communication device. Examples of such parameters include forward error correction (FEC) code, error correction code (ECC), modulation coding set (MCS), modulation type including a mapping of constellation points arranged in a constellation, power (e.g., transmit (TX) power), orthogonal frequency division multiplexing (OFDM) configuration, and/or a multiple-input-multiple-output (MIMO) configuration.