公开(公告)号：US20140286238A1

公开(公告)日：2014-09-25

申请号：US14221438

申请日：2014-03-21

Applicant: BROADCOM CORPORATION

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

IPC: H04L12/931 ,  H04W80/00

CPC classification number: H04W80/00

Abstract: A wireless communication device is configured to generate frames based on any of a number of different frame formats for transmission to one or more other recipient wireless communication devices. The frame may be implemented to include data intended for two or more recipient devices. The device encodes first data intended for a first recipient device using first one or more coding parameters and encodes second data intended for a second recipient device using second one or more coding parameters. The manner by which the first and second data have been encoded is indicated within one or more other fields within the frames based on the selected frame format. In one example, a single preamble specifies the first and second one or more coding parameters. In another example, an initial preamble and one or more respective sub-preambles specify the first and second one or more coding parameters.

Abstract translation: 无线通信设备被配置为基于用于传输到一个或多个其他接收者无线通信设备的多个不同帧格式中的任何一个来生成帧。 该帧可以被实现为包括用于两个或更多个接收设备的数据。 设备使用第一个或多个编码参数来编码用于第一接收方设备的第一数据，并使用第二个一个或多个编码参数对用于第二接收方设备的第二数据进行编码。 基于选择的帧格式，在帧内的一个或多个其他字段内指示第一和第二数据被编码的方式。 在一个示例中，单个前导码指定第一和第二一个或多个编码参数。 在另一示例中，初始前同步码和一个或多个相应的子前导码指定第一和第二个一个或多个编码参数。

公开(公告)号：US10361826B2

公开(公告)日：2019-07-23

申请号：US15185967

申请日：2016-06-17

Applicant: BROADCOM CORPORATION

Inventor： Ron Porat

IPC: H04L5/00 ,  H04W76/14 ,  H04L27/00 ,  H04L27/26

Abstract: A wireless communication device (alternatively, device, WDEV, etc.) includes a processing circuitry configured to support communications with other WDEV(s) and to generate and process signals for such communications. In some examples, the device includes a communication interface and a processing circuitry, among other possible circuitries, components, elements, etc. to support communications with other WDEV(s) and to generate and process signals for such communications. A WDEV generates and transmits an OFDM packet that specifies resource allocation of a communication channel for other WDEVs. The WDEV then support communications with the other WDEVs based on the resource allocation of the communication channel. The OFDM packet includes an OFDMA indicator bit and a multi-purpose field that serves different purposes based on setting of the OFDMA indicator bit (e.g., the multi-purpose field is used for different purposes when the OFDMA indicator bit indicates OFDMA or non-OFDMA resource allocation).

公开(公告)号：US10313054B2

公开(公告)日：2019-06-04

申请号：US14979885

申请日：2015-12-28

Applicant: BROADCOM CORPORATION

Inventor： Ba-Zhong Shen ,  Matthias Korb ,  Andrew John Blanksby ,  Ron Porat

IPC: H03M13/00 ,  H04L1/00 ,  H03M13/03 ,  H03M13/11

Abstract: A communication device (alternatively, device) includes a processor configured to support communications with other communication device(s) and to generate and process signals for such communications. In some examples, the device includes a communication interface and a processor, among other possible circuitries, components, elements, etc. to support communications with other communication device(s) and to generate and process signals for such communications. In some examples, a device encodes information using a low density parity check (LDPC) code to generate an LDPC coded signal and transmits the LDPC coded signal to another communication device. in other examples, a device receives an LDPC coded signal from another communication device and decodes the LDPC coded signal using an LDPC matrix. The LDPC matrix includes a left hand side matrix and a right hand side matrix (e.g., having CSI (Cyclic Shifted Identity) sub-matrices on a main diagonal and another diagonal adjacently located to the main diagonal).

公开(公告)号：US09954711B2

公开(公告)日：2018-04-24

申请号：US14736479

申请日：2015-06-11

Applicant: BROADCOM CORPORATION

Inventor： Ron Porat

IPC: H04W72/04 ,  H04L27/26 ,  H04L1/00 ,  H04L5/00

CPC classification number: H04L27/2646 ,  H04L1/00 ,  H04L5/00 ,  H04L5/0044 ,  H04L5/0048 ,  H04L5/0094 ,  H04L27/2637 ,  H04W72/0453

Abstract: A wireless communication device (alternatively, device) includes a communication interface and a processor, among other possible circuitries, components, elements, etc. to support communications with other wireless communication device(s) and to generate and process signals for such communications. A device is configured to generate various orthogonal frequency division multiplexing (OFDM) and/or orthogonal frequency division multiple access (OFDMA) packets (e.g., frames, signals, etc.) that are based on any of group of set of OFDM/A frame structures. Across the various OFDM/A frame structures, the ratio of pilot sub-carriers to data sub-carriers across resource units (RUs) decreases as the total number of sub-carriers across the RUs increases. In addition, some of the OFDM/A frame structures include different total number of sub-carriers yet same number of pilot sub-carriers. The device is configured to perform adaptation among and between the various OFDM/A frame structures based on any one or more considerations.

公开(公告)号：US09923999B2

公开(公告)日：2018-03-20

申请号：US14927813

申请日：2015-10-30

Applicant: BROADCOM CORPORATION

Inventor： Ron Porat

IPC: H04B7/00 ,  H04L29/06 ,  H04L27/26 ,  H04L5/00 ,  H04W72/04

CPC classification number: H04L69/22 ,  H04L5/0005 ,  H04L27/2613 ,  H04L27/263 ,  H04W72/04

Abstract: Frame formatting for communications within single user, multiple user, multiple access, and/or MIMO wireless communications. A signal is processed within a communication device using at least two respective downclocking ratios (e.g., a first downclocking ratio applied to a first portion of the signal such as a frame or packet extracted there from, a second downclocking ratio applied to a second portion of the signal). Alternatively, a signal is divided into more than two respective portions, and different respective downclocking ratios are applied to those different respective portions (e.g., a first downclocking ratio applied to a first portion of the signal, and so on up to an n-th downclocking ratio applied to an n-th portion of the signal). Some implementations apply a singular or common downclocking ratio to more than one portion of the signal (which may be contiguous/adjacent or non-contiguous/non-adjacent within the signal).

公开(公告)号：US09923680B2

公开(公告)日：2018-03-20

申请号：US15261513

申请日：2016-09-09

Applicant: Broadcom Corporation

Inventor： Ron Porat ,  Sriram Venkateswaran

IPC: H04L5/00 ,  H04W72/04 ,  H04B7/06 ,  H04B7/0408 ,  H04B7/0452 ,  H04L12/28 ,  H04L12/46 ,  H04L27/26

CPC classification number: H04L5/001 ,  H04B7/0408 ,  H04B7/0452 ,  H04B7/0617 ,  H04B7/0636 ,  H04L5/0007 ,  H04L5/0041 ,  H04L5/0048 ,  H04L12/2854 ,  H04L12/4604 ,  H04L27/261 ,  H04W72/0453

Abstract: A wireless communication device (alternatively, device, WDEV, etc.) includes at least one processing circuitry configured to support communications with other WDEV(s) and to generate and process signals for such communications. In some examples, the device includes a communication interface and a processing circuitry, among other possible circuitries, components, elements, etc. to support communications with other WDEV(s) and to generate and process signals for such communications. The WDEV receives a null data packet (NDP) announcement frame that specifies a sub-carrier (SC) or tone grouping factor, a communication channel bandwidth, and other WDEV(s) to respond with beamforming feedback. The WDEV process the NDP announcement frame to determine it is to respond, and if so, then receives a NDP sounding frame that includes long training fields (LTFs) and pilots at predetermined locations and generates beamforming feedback of communication channel estimates at SCs as determined based on a sub-carrier roster look up table (LUT).

公开(公告)号：US09831929B2

公开(公告)日：2017-11-28

申请号：US14821939

申请日：2015-08-10

Applicant: BROADCOM CORPORATION

Inventor： Ron Porat ,  Matthew James Fischer ,  Eric J. Ojard

IPC: H04W4/00 ,  H04B7/0417 ,  H04B7/0456 ,  H04B7/04 ,  H04W88/02 ,  H04W88/08 ,  H04B7/06

CPC classification number: H04B7/0417 ,  H04B7/043 ,  H04B7/0456 ,  H04B7/0641 ,  H04B7/065 ,  H04B7/0658 ,  H04W88/02 ,  H04W88/08

Abstract: Differential feedback within multiple user, multiple access, and/or MIMO wireless communications. After full feedback signal(s) have been received by a communication device (e.g., one that is to be performing beamforming for use in subsequent signal transmission), differential feedback signal(s) are received. Those differential feedback signal(s) are employed to update the full feedback signal(s) thereby generating updated/modified full feedback signals. Over time, such updated/modified full feedback signals may subsequently be further updated based upon later received inferential feedback signal(s). Such differential feedback signaling takes advantage of time and/or frequency correlation in a communication channel to provide for reduced feedback overhead by feeding back a difference or delta (Δ) relative to a previous value. For example, instead of providing full feedback signals in each respective/successive communication, feedback overhead is reduced by providing a difference or delta (Δ).

公开(公告)号：US09780846B2

公开(公告)日：2017-10-03

申请号：US15161360

申请日：2016-05-23

Applicant: BROADCOM CORPORATION

Inventor： Ron Porat ,  Jun Zheng

IPC: H04L27/34 ,  H04B7/0413 ,  H04L27/26 ,  H04W84/12

CPC classification number: H04B7/0413 ,  H04B2201/70706 ,  H04L27/2621 ,  H04L27/2666 ,  H04W84/12 ,  Y02B80/50 ,  Y02D70/00 ,  Y02D70/142 ,  Y02D70/144

Abstract: Selective processing of one or more packets to be transmitted from a wireless communication device to another wireless communication device is effective to reduce the peak to average power ratio (PAPR) of the transmission. The one or more packets are transmitted via two or more sub-bands of an available transmission medium. The number of coefficients or factors within that sequence corresponds to the number of sub-bands via which the one or more packets are to be transmitted. Also, a phase ramp or time-domain cyclic shift may be added to one or more of the packets after having undergone multiplication by one of the coefficients or factors within the sequence.

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：US20170048033A1

公开(公告)日：2017-02-16

申请号：US15185967

申请日：2016-06-17

Applicant: BROADCOM CORPORATION

Inventor： Ron Porat

IPC: H04L5/00 ,  H04W72/04 ,  H04B7/04

CPC classification number: H04L5/0023 ,  H04L5/0037 ,  H04L5/0092 ,  H04L5/0094 ,  H04L27/0008 ,  H04L27/2602 ,  H04W76/14

Abstract: A wireless communication device (alternatively, device, WDEV, etc.) includes a processing circuitry configured to support communications with other WDEV(s) and to generate and process signals for such communications. In some examples, the device includes a communication interface and a processing circuitry, among other possible circuitries, components, elements, etc. to support communications with other WDEV(s) and to generate and process signals for such communications. A WDEV generates and transmits an OFDM packet that specifies resource allocation of a communication channel for other WDEVs. The WDEV then support communications with the other WDEVs based on the resource allocation of the communication channel. The OFDM packet includes an OFDMA indicator bit and a multi-purpose field that serves different purposes based on setting of the OFDMA indicator bit (e.g., the multi-purpose field is used for different purposes when the OFDMA indicator bit indicates OFDMA or non-OFDMA resource allocation).

Abstract translation: 无线通信设备（可选地，设备，WDEV等）包括被配置为支持与其他WDEV的通信并且生成和处理用于这种通信的信号的处理电路。 在一些示例中，该设备包括通信接口和处理电路以及其他可能的电路，组件，元件等，以支持与其他WDEV的通信，并且生成和处理用于这种通信的信号。 WDEV生成并发送指定用于其他WDEV的通信信道的资源分配的OFDM分组。 然后，WDEV基于通信信道的资源分配来支持与其他WDEV的通信。 OFDM分组包括OFDMA指示符位和用于基于OFDMA指示符位的设置而不同目的的多用途字段（例如，当OFDMA指示符位指示OFDMA或非OFDMA时，多用途字段用于不同目的 资源分配）。