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：US20160095110A1

公开(公告)日：2016-03-31

申请号：US14862838

申请日：2015-09-23

Applicant: BROADCOM CORPORATION

Inventor： Yong (Gordon) Li ,  Guy Drory ,  Yonatan Cohen ,  Baoguo Yang ,  Matthew Fischer ,  Sharon Levy ,  Sindhu Verma ,  Shubhodeep Adhikari

IPC: H04W72/04 ,  H04W72/12

CPC classification number: H04W72/1215 ,  H04W74/0816 ,  H04W88/10

Abstract: A method includes detecting, using a WiFi access point, channel use data indicating traffic on a plurality of channels of an unlicensed LTE band in a wireless network. The method further includes providing the channel use data to a Long Term Evolution (LTE) access point. The method further includes selecting, using the LTE access point, a channel for use in transmitting data by the LTE access point from among the plurality of channels based on the channel use data from the WiFi access point. The method further includes providing, from the LTE access point, an indication of an upcoming transmission configured to transmit data on the channel to the WiFi access point. The method further includes broadcasting one or more messages from the WiFi access point to one or more WiFi nodes, the one or more messages configured to prevent the WiFi nodes from transmitting on the channel.

Abstract translation: 一种方法包括使用WiFi接入点检测指示无线网络中未许可的LTE频带的多个信道上的业务的信道使用数据。 该方法还包括向长期演进（LTE）接入点提供信道使用数据。 该方法还包括基于来自WiFi接入点的频道使用数据，从LTE接入点中选择用于从多个频道中的LTE接入点发送数据的信道。 该方法还包括从LTE接入点提供被配置为将信道上的数据发送到WiFi接入点的即将到来的传输的指示。 该方法还包括将一个或多个消息从WiFi接入点广播到一个或多个WiFi节点，所述一个或多个消息被配置为防止WiFi节点在该信道上发送。

公开(公告)号：US20140119205A1

公开(公告)日：2014-05-01

申请号：US13661261

申请日：2012-10-26

Applicant: BROADCOM CORPORATION

Inventor： Baoguo Yang ,  Joonsuk Kim ,  Lek (Sirikiat) Ariyavisitakul ,  Nelson R. Sollenberger

IPC: H04B15/00 ,  H04W24/00

CPC classification number: H04B1/7107 ,  H04J11/004 ,  H04L25/0204 ,  H04L25/0228

Abstract: Hybrid multi-cell channel estimation. At least two different operational modes associated with performing multi-cell channel estimation are combined and performed within different respective iterations of processing in order to generate a multi-cell channel estimate. A device, including at least one wireless interface to support communications with at least one other device and also including at least one processor to process signals received by or to be transmitted from, is operative to generate a multi-cell channel estimate corresponding to two or more respective cells with which the device may communicate. A first operational mode corresponds to time domain (TDOM) based per-tap serial interference cancellation (SIC), and a second operational mode corresponds to frequency domain (FDOM) based per-cell SIC. One implementation operates with no more than one iteration of TDOM based per-tap SIC, and no more than two iterations of FDOM based per-cell SIC.

Abstract translation: 混合多小区信道估计。 与执行多小区信道估计相关联的至少两种不同的操作模式在不同的相应的处理迭代中被组合和执行，以便生成多小区信道估计。 一种包括至少一个无线接口以支持与至少一个其他设备的通信并且还包括至少一个处理器以处理由或由其发送的信号的设备可用于生成对应于两个或更多个设备的多小区信道估计 设备可以与其通信的更多个别单元。 第一操作模式对应于基于时域（TDOM）的每抽头串行干扰消除（SIC），第二操作模式对应于基于频域（FDOM）的每小区SIC。 一个实现方式在不超过一次的基于TDOM的每抽头SIC下运行，并且不超过两次基于FDOM的每单元SIC迭代。

公开(公告)号：US20160088642A1

公开(公告)日：2016-03-24

申请号：US14862977

申请日：2015-09-23

Applicant: Broadcom Corporation

Inventor： Baoguo Yang ,  Gordon Li

IPC: H04W72/08 ,  H04W24/08 ,  H04W72/04

CPC classification number: H04W72/085 ,  H04W16/14 ,  H04W24/02 ,  H04W24/08 ,  H04W72/0446

Abstract: The disclosure is directed systems and methods for providing robust coexistence for LAA-LTE, including physical layer enhancements and options to support robust coexistence for LAA-LTE, and deployment and evaluation scenarios and methods.

Abstract translation: 本公开是用于为LAA-LTE提供强大共存的系统和方法，包括物理层增强和用于支持LAA-LTE的鲁棒共存的选项以及部署和评估场景和方法。

公开(公告)号：US20160127057A1

公开(公告)日：2016-05-05

申请号：US14885562

申请日：2015-10-16

Applicant: BROADCOM CORPORATION

Inventor： Baoguo Yang

IPC: H04B17/345 ,  H04W16/14

CPC classification number: H04B17/345 ,  H04W16/14

Abstract: Systems and methods allow LAA LTE equipment to coexist with other services in the unlicensed band such as WIFI or WLAN services. Systems and methods use LTE reference signals in the unlicensed spectrum that are not continuous and can be interrupted by a WIFI signal or other services in the unlicensed band or use a dynamic LAA ON burst or window to provide the LTE reference signals in some embodiments. The systems and methods can detect the presence of LTE signals using a one or more of a number of techniques.

Abstract translation: 系统和方法允许LAA LTE设备与诸如WIFI或WLAN服务之类的非许可频带中的其他服务共存。 系统和方法在非许可频谱中使用不连续的LTE参考信号，并且可以被WIFI信号或非许可频带中的其他服务中断，或者在一些实施例中使用动态LAA ON突发或窗口来提供LTE参考信号。 系统和方法可以使用多种技术中的一种或多种来检测LTE信号的存在。

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.