公开(公告)号：US20170142592A1

公开(公告)日：2017-05-18

申请号：US14969202

申请日：2015-12-15

Applicant: Broadcom Corporation

Inventor： Matthew J. Fischer ,  Baoguo Yang ,  Nelson Sollenberger ,  Gordon Y. Li ,  Vinko Erceg

IPC: H04W16/14 ,  H04W72/12 ,  H04W74/06

CPC classification number: H04W16/14 ,  H04W72/0446 ,  H04W72/1263 ,  H04W74/04 ,  H04W74/0816 ,  H04W84/042 ,  H04W84/12

Abstract: In some aspects, the disclosure is directed to methods and systems for coexistence management. A first access point is scheduled a time to begin transmission of a packet to a user device in an unlicensed frequency band using a first RAT. The time to begin the transmission is scheduled to avoid transmission overlap with a second access point using a second RAT in the unlicensed frequency band, and scheduled according to information from the second access point regarding operation in the unlicensed frequency band using the second RAT. One of the first and second RATs includes one of a WLAN RAT or a LTE based RAT, and another of the first and second RATs includes a remaining one of the WLAN RAT or the LTE based RAT, in one or more embodiments. The first access point receives updated information regarding operation in the unlicensed frequency band using the second RAT. Using the updated information, an updated time for the first access point to begin the transmission using the first RAT is determined, the updated time determined to avoid transmission overlap with the second RAT in the unlicensed frequency band. The first access point transmits, according to the determined updated time, the packet in the unlicensed frequency band using the first RAT.

公开(公告)号：US20170142742A1

公开(公告)日：2017-05-18

申请号：US14969209

申请日：2015-12-15

Applicant: Broadcom Corporation

Inventor： Matthew J. Fischer ,  Baoguo Yang ,  Nelson Sollenberger ,  Gordon Y. Li ,  Vinko Erceg

IPC: H04W72/12 ,  H04W74/08 ,  H04L12/851 ,  H04W28/08

CPC classification number: H04W72/1215 ,  H04L47/30 ,  H04W16/14 ,  H04W24/02 ,  H04W28/08

Abstract: In some aspects, the disclosure is directed to methods and systems for coexistence management. A first access point operating in an unlicensed frequency band using a first RAT receives, from a second access point operating in the unlicensed frequency band using a second RAT, information regarding operation of the second access point in the unlicensed frequency band. It is determined, using the received information, that the first access point or the second access point is using a first share of the unlicensed frequency band that is below a predetermined threshold, indicating an imbalance of usage between the first RAT and the second RAT. A transmission parameter of the first access point for operating in the unlicensed frequency band using the first RAT is adjusted according to the determination. The first access point transmits the one or more packets using the adjusted transmission parameter, to cause the first access point or the second access point to use an updated share of the unlicensed frequency band that is closer to the predetermined threshold than the first share.

公开(公告)号：US09036826B2

公开(公告)日：2015-05-19

申请号：US13720672

申请日：2012-12-19

Applicant: Broadcom Corporation

Inventor： Jes Thyssen ,  Huaiyu Zeng ,  Nelson Sollenberger ,  Juin-Hwey Chen

IPC: H04B3/20 ,  H04M9/08

CPC classification number: H04M9/082

Abstract: A system that utilizes closed-form solutions to perform echo cancellation is described. The system includes a filter, filter parameter determination logic and a combiner. The filter is configured to process a far-end audio signal in accordance with one or more filter parameters to generate an estimated echo signal. The filter parameter determination logic is configured to update estimated statistics associated with the far-end audio signal and a microphone signal based on instantaneous statistics associated with the far-end audio signal and the microphone signal, and calculate the one or more filter parameters based upon the updated estimated statistics. The combiner is configured to generate an estimated near-end audio signal by subtracting the estimated echo signal from the microphone signal.

Abstract translation: 描述了利用闭式解决方案来执行回波消除的系统。 该系统包括滤波器，滤波器参数确定逻辑和组合器。 滤波器被配置为根据一个或多个滤波器参数处理远端音频信号以产生估计回波信号。 滤波器参数确定逻辑被配置为基于与远端音频信号和麦克风信号相关联的瞬时统计信息来更新与远端音频信号相关联的估计统计量和麦克风信号，并且基于以下方式计算一个或多个滤波器参数 更新的估计统计数据。 组合器被配置为通过从麦克风信号中减去估计的回波信号来产生估计的近端音频信号。

公开(公告)号：US20130216057A1

公开(公告)日：2013-08-22

申请号：US13720672

申请日：2012-12-19

Applicant: Broadcom Corporation

Inventor： Jes Thyssen ,  Huaiyu Zeng ,  Nelson Sollenberger ,  Juin-Hwey Chen

IPC: H04M9/08

CPC classification number: H04M9/082

Abstract: A system that utilizes closed-form solutions to perform echo cancellation is described. The system includes a filter, filter parameter determination logic and a combiner. The filter is configured to process a far-end audio signal in accordance with one or more filter parameters to generate an estimated echo signal. The filter parameter determination logic is configured to update estimated statistics associated with the far-end audio signal and a microphone signal based on instantaneous statistics associated with the far-end audio signal and the microphone signal, and calculate the one or more filter parameters based upon the updated estimated statistics. The combiner is configured to generate an estimated near-end audio signal by subtracting the estimated echo signal from the microphone signal.

Abstract translation: 描述了利用闭式解决方案来执行回波消除的系统。 该系统包括滤波器，滤波器参数确定逻辑和组合器。 滤波器被配置为根据一个或多个滤波器参数处理远端音频信号以产生估计回波信号。 滤波器参数确定逻辑被配置为基于与远端音频信号和麦克风信号相关联的瞬时统计信息来更新与远端音频信号相关联的估计统计量和麦克风信号，并且基于以下方式计算一个或多个滤波器参数 更新的估计统计数据。 组合器被配置为通过从麦克风信号中减去估计的回波信号来产生估计的近端音频信号。