公开(公告)号：US20170111926A1

公开(公告)日：2017-04-20

申请号：US14918420

申请日：2015-10-20

Applicant: CISCO TECHNOLOGY, INC.

Inventor： Ritesh K. Madan ,  Vikram Chandrasekhar ,  Rohit Umesh Nabar ,  Kedar Durgadas Shirali ,  Qing Zhao

IPC: H04W72/12 ,  H04W72/08 ,  H04W16/32 ,  H04W72/04

CPC classification number: H04W72/1273 ,  H04L5/0035 ,  H04L5/0073 ,  H04W16/32 ,  H04W72/0413 ,  H04W72/042 ,  H04W72/082 ,  H04W72/1226 ,  H04W72/1231 ,  H04W72/1289

Abstract: An example method is provided in one example embodiment and includes receiving performance metric information from a plurality of small cell radios, wherein the performance metric information includes, at least in part, a number of user equipment that are to be scheduled on a first type and a second type of subframes for each small cell radio; determining resource allocation parameters for the plurality of small cell radios; exchanging interference information between two or more small cell radios of the plurality of small cell radios that includes an indication of whether a particular small cell radio is interfering with or is interfered by another small cell radio of the two or more small cell radios; and scheduling downlink resource transmissions on the first type and the second type of subframes for user equipment served by the two or more small cell radios.

公开(公告)号：US20170041957A1

公开(公告)日：2017-02-09

申请号：US15057733

申请日：2016-03-01

Applicant: Cisco Technology, Inc.

Inventor： Rajesh Pazhyannur ,  Vikram Chandrasekhar ,  Raymond Yuk Chor Kwan

IPC: H04W74/08

CPC classification number: H04W74/0808 ,  H04L1/1812 ,  H04L1/203 ,  H04L2001/0093

Abstract: A first wireless device determines the duration of a clear channel assessment interval based on feedback signals before transmitting data to a second wireless device. The first wireless device receives feedback signals, such as acknowledgement (ACK) and negative acknowledgement (NAK) signals, from one or more second wireless devices. The first wireless device determines a ratio of NAK/ACK signals in the feedback signals for a predetermined amount of time. The first wireless device determines whether the wireless medium is free by monitoring for wireless signals during a clear channel assessment interval. The duration of the clear channel assessment interval is based on the ratio of NAK/ACK signals. If the wireless medium is free for the duration of the clear channel assessment, the first wireless device wirelessly transmits data to at least one of the second wireless devices.

Abstract translation: 第一无线设备在将数据发送到第二无线设备之前基于反馈信号来确定清除信道评估间隔的持续时间。 第一无线设备从一个或多个第二无线设备接收诸如确认（ACK）和否定确认（NAK）信号的反馈信号。 第一无线设备确定反馈信号中的NAK / ACK信号的比例达预定的时间量。 第一无线设备通过在清除信道评估间隔期间监视无线信号来确定无线介质是否空闲。 清除信道评估间隔的持续时间基于NAK / ACK信号的比率。 如果无线介质在清除信道评估期间是空闲的，则第一无线设备向第二无线设备中的至少一个无线地发送数据。

公开(公告)号：US20170041939A1

公开(公告)日：2017-02-09

申请号：US14818084

申请日：2015-08-04

Applicant: CISCO TECHNOLOGY, INC.

Inventor： Ritesh K. Madan ,  Rohit Umesh Nabar ,  Vikram Chandrasekhar ,  Kedar Durgadas Shirali

IPC: H04W72/08

CPC classification number: H04W16/10

Abstract: An example method is provided in one example embodiment and includes receiving at least one performance metric from each of a plurality of cells, the at least performance metric associated with a downlink transmission from the cell to one or more user equipment devices associated with the cell. The method further includes determining a fraction of resources for allocation within a fractional frequency reuse portion of a frequency spectrum based upon the received at least one performance metric, and determining a fraction of the resources for allocation within a reuse one portion of the frequency spectrum based upon the determined fraction of resources for allocation within the fractional frequency reuse portion of the frequency spectrum.

Abstract translation: 在一个示例实施例中提供了示例性方法，并且包括从多个小区中的每一个接收至少一个性能度量，所述至少一个性能度量与从所述小区到与所述小区相关联的一个或多个用户设备设备的下行链路传输相关联。 该方法还包括基于所接收的至少一个性能度量来确定在频谱的分数频率重用部分内的用于分配的资源的一部分，以及在基于频谱的重用一部分中确定用于分配的资源的一部分 在频谱的分数频率重用部分中确定的用于分配的资源分数。

公开(公告)号：US20170041805A1

公开(公告)日：2017-02-09

申请号：US15227099

申请日：2016-08-03

Applicant: Cisco Technology, Inc.

Inventor： Vikram Chandrasekhar ,  Kedar Shirali ,  Qing Zhao ,  Rajesh Pazhyannur

IPC: H04W16/14 ,  H04L1/18 ,  H04W72/04

CPC classification number: H04W16/14 ,  H04L1/1812 ,  H04L1/1896 ,  H04W74/0816

Abstract: A mobile device obtains data to be wirelessly transmitted over a shared spectrum in an uplink channel to a base station. The uplink channel is formatted with a frame/subframe structure with a predetermined timing. The mobile device determines whether the shared spectrum is free for transmission according to a Listen Before Transmit procedure. When the shared spectrum is free for transmission, the mobile device selects a start time in the uplink channel that mitigates interference from other mobile devices in proximity to the mobile device. Beginning at the start time, the mobile device transmits the data over the shared spectrum in the uplink channel to the base station.

Abstract translation: 移动设备获取在上行链路信道中通过共享频谱无线发送的数据到基站。 上行链路信道用预定定时的帧/子帧结构格式化。 移动设备根据“在侦听之前”过程确定共享频谱是否可用于传输。 当共享频谱不需要传输时，移动设备选择上行链路信道中的起始时间，以减轻来自移动设备附近的其他移动设备的干扰。 从开始时开始，移动设备通过上行链路信道中的共享频谱将数据发送到基站。

公开(公告)号：US20170026914A1

公开(公告)日：2017-01-26

申请号：US14809201

申请日：2015-07-25

Applicant: CISCO TECHNOLOGY, INC.

Inventor： Ritesh K. Madan ,  Rohit Umesh Nabar ,  Vikram Chandrasekhar ,  Kedar Durgadas Shirali ,  Qing Zhao

IPC: H04W52/24 ,  H04W52/14

CPC classification number: H04W52/244 ,  H04W52/146 ,  H04W52/241 ,  H04W52/242 ,  H04W52/243

Abstract: A method is provided in one example embodiment and may include calculating, by one or more of a plurality of small cell radios, one or more sets of candidate power control parameters using a first interference constraint for uplink user equipment (UE) transmissions for UE served by the one or more of the plurality of small cell radios; determining, at a central management entity, whether an average of a sum of an expected interference for UE associated with the plurality of small cell radios violates a second interference constraint for any of the one or more sets of candidate power control parameters; and generating one or more messages for each of the plurality of small cell radios identifying one or more particular sets of power control parameters that provide for meeting the second interference constraint.

公开(公告)号：US20160135185A1

公开(公告)日：2016-05-12

申请号：US14881479

申请日：2015-10-13

Applicant: Cisco Technology, Inc.

Inventor： Vikram Chandrasekhar ,  James Seymour ,  Rajesh Pazhyannur ,  Andrew Myles

IPC: H04W72/04 ,  H04L5/00 ,  H04W16/14

CPC classification number: H04L5/0007 ,  H04L5/0032 ,  H04L5/0044 ,  H04L5/0071 ,  H04L5/0087 ,  H04L5/0091 ,  H04L5/14 ,  H04W16/14 ,  H04W72/1263 ,  H04W72/1278

Abstract: Modifications to frame/subframe structure are presented herein so that a wirelessdevice can transmit its data within a fraction of a subframe. The device obtains data to be transmitted in an unlicensed spectrum and determines whether an entire subframe is required to completely communicate the data. If the data is small enough to not require the entire subframe, then the device generates a burst transmission to minimize the time period of the subframe used to communicate the data. The device transmits the burst transmission and a parameter indicating the duration of the burst transmission.

Abstract translation: 本文给出了对帧/子帧结构的修改，使得无线设备可以在子帧的一小部分内传送其数据。 该装置获得将在未许可频谱中发送的数据，并且确定是否需要整个子帧来完全传送数据。 如果数据足够小以至不需要整个子帧，则设备产生突发传输以最小化用于传送数据的子帧的时间段。 设备发送突发传输和指示突发传输的持续时间的参数。

公开(公告)号：US20160135080A1

公开(公告)日：2016-05-12

申请号：US14933056

申请日：2015-11-05

Applicant: Cisco Technology, Inc.

Inventor： Rajesh Pazhyannur ,  Brian Hart ,  Andrew Myles ,  Vikram Chandrasekhar

IPC: H04W28/04 ,  H04L12/26 ,  H04W72/04 ,  H04B17/318

CPC classification number: H04W28/04 ,  H04B17/318 ,  H04L43/16 ,  H04W16/14 ,  H04W72/044 ,  H04W74/0808 ,  H04W84/12

Abstract: Presented herein are mechanisms to reduce collisions in deployments with Wi-Fi and Shared Access LTE (SAC-LTE) equipment as well SAC-LTE equipment from multiple operators. The mechanisms enhance the baseline energy detection mechanism by incorporating methods to decode cross-technology physical layer elements and media access control (MAC) layer elements in the Wi-Fi system to elements in the SAC-LTE system. The methods described improve the detection potential for transmitters, thereby reducing chances of cross-technology collisions.

Abstract translation: 这里提出的是利用Wi-Fi和共享接入LTE（SAC-LTE）设备以及来自多个运营商的SAC-LTE设备来减少部署中的冲突的机制。 这些机制通过并入将Wi-Fi系统中的跨技术物理层元素和媒体访问控制（MAC）层元素解码为SAC-LTE系统中的元素的方法来增强基线能量检测机制。 所描述的方法提高了发射机的检测潜力，从而减少了跨技术冲突的机会。

公开(公告)号：US20160037490A1

公开(公告)日：2016-02-04

申请号：US14450040

申请日：2014-08-01

Applicant: CISCO TECHNOLOGY, INC.

Inventor： Rajesh S. Pazhyannur ,  Vikram Chandrasekhar ,  Ahmadreza Hedayat

IPC: H04W72/04

CPC classification number: H04W72/042 ,  H04W16/14 ,  H04W72/0446 ,  H04W72/0453 ,  H04W72/1215 ,  H04W74/0816

Abstract: An example method is provided in one example embodiment and may determining, by a first communication device, whether one or more other communication devices are communicating wireless signals in a particular channel of an unlicensed band of the communication network; scheduling one or more Long Term Evolution Unlicensed (LTE-U) sub-frames within a frame schedule for a user equipment (UE) based, at least in part, on determining that one or more communication devices are communicating wireless signals in the particular channel; and communicating the one or more LTE-U sub-frames to the UE according to the frame schedule.

Abstract translation: 在一个示例实施例中提供了示例性方法，并且可以由第一通信设备确定一个或多个其他通信设备是否在通信网络的非许可频带的特定信道中传送无线信号; 至少部分地基于确定一个或多个通信设备在特定信道中传送无线信号来为用户设备（UE）在帧调度内调度一个或多个长期演进未许可（LTE-U）子帧 ; 以及根据所述帧调度向所述UE传送所述一个或多个LTE-U子帧。