公开(公告)号：US20190191369A1

公开(公告)日：2019-06-20

申请号：US16281284

申请日：2019-02-21

Applicant: Cisco Technology, Inc.

Inventor： Vishal Desai ,  Tak Ming Pang ,  John Blosco

IPC: H04W48/20 ,  H04L12/26 ,  H04L5/00 ,  H04W24/02 ,  H04W52/18

CPC classification number: H04W48/20 ,  H04L5/006 ,  H04L43/08 ,  H04L43/10 ,  H04L43/16 ,  H04W24/02 ,  H04W52/18 ,  H04W52/245 ,  H04W84/12

Abstract: In one embodiment, a method implemented on a computing device includes: selecting a wireless access point (AP) to process from among a deployment of wireless access points (APs), defining a neighborhood based on the AP and neighboring APs, where the neighboring APs are within a one-hop radius of the AP, calculating a client distribution optimal received signal strength indicator (RSSI), where the client distribution optimal RSSI (CD optimal) is a minimum receiver start of packet detection threshold (RX-SOP) setting for maintaining existing client device coverage by the AP, calculating a neighbor relations optimal RSSI threshold (NR optimal), where the NR optimal is a function of at least a transmit power control threshold (TPC) for maintaining visibility between the AP and the neighboring APs, calculating an RX-SOP setting for the AP as a function of CD optimal and NR optimal, and applying the RX-SOP setting to the AP.

公开(公告)号：US10111206B2

公开(公告)日：2018-10-23

申请号：US15288772

申请日：2016-10-07

Applicant: Cisco Technology, Inc.

Inventor： Vishal Satyendra Desai ,  John Blosco ,  Allen Huotari

IPC: H04W72/04 ,  H04W74/08 ,  H04W48/18 ,  H04W88/10 ,  H04W88/08

Abstract: Embodiments herein describe using a dual assess point (AP) to establish two access points that both are established by two individual radios (e.g., two 5 GHz radios). Generally, APs experience highly degraded performance when two co-located radios operate within the same band. In one embodiment, AP devices can deploy same band radios using a macro-micro cell approach. Thus, the AP may intelligently hand off client devices between the micro and macro cell in a way that optimizes the system for overall throughput and low packet latency while creating minimal oscillation of clients between cells. The embodiments in this disclosure disclose techniques that direct clients in a manner that optimizes these factors.

公开(公告)号：US10340975B2

公开(公告)日：2019-07-02

申请号：US15379726

申请日：2016-12-15

Applicant: Cisco Technology, Inc.

Inventor： Matthew A. Silverman ,  Paul J. Stager ,  John Blosco ,  Corey D. Metsker

IPC: H04W88/08 ,  H04B1/525 ,  H04B1/10 ,  H04W84/12

Abstract: Receiving filter design that reduces out-of-channel interference for APs is disclosed. An AP includes a first radio and a second radio disposed in a body of the AP. The first radio transmits first signals in a frequency band while the second radio receives second signals in the same frequency band. The AP includes an interference mitigation controller that determines a receiving filter for the second radio to mitigate interference between the first radio and the second radio based on the second signals received by the second radio when the first radio transmits the first signals in the frequency band. The interference mitigation controller applies the receiving filter to signals received by the second radio during a time period that the first radio is transmitting signals in the frequency band while the second radio is receiving signals in the frequency band.

公开(公告)号：US20150131593A1

公开(公告)日：2015-05-14

申请号：US14600300

申请日：2015-01-20

Applicant: Cisco Technology, Inc

Inventor： Paul J. Stager ,  Matthew A. Silverman ,  Zhigang Gao ,  John Blosco ,  Raghuram Rangarajan

IPC: H04W72/08 ,  H04L5/00 ,  H04W72/04

CPC classification number: H04W72/082 ,  H04L5/0073 ,  H04W24/02 ,  H04W72/0426 ,  H04W72/046 ,  H04W84/12 ,  H04W88/08

Abstract: In a wireless local area network, each of multiple access points, in a high density deployment, are configured to suppress co-channel interference. A first access point having a plurality of antennas beamforms a transmission to a wireless client device within a null-space or with the weakest singular eigenmodes of a wireless channel between the first access point and at least one co-channel second access point. Techniques are presented herein for situations in which any given access point has two or more co-channel access points. In addition, an access point may perform receive side suppression with respect to a transmission (made by a co-channel access point to one of its associated wireless client devices) that is received from that co-channel access point.

Abstract translation: 在无线局域网中，高密度部署中的多个接入点中的每一个被配置为抑制同信道干扰。 具有多个天线的第一接入点波束在零空间内或在第一接入点与至少一个同频道第二接入点之间的无线信道的最弱奇异本征模式中形成向无线客户端设备的传输。 本文给出了任何给定接入点具有两个或更多个同频道接入点的情况的技术。 此外，接入点可以针对从该同频道接入点接收到的传输（由与其相关联的无线客户端设备之一的同频道接入点进行的）进行接收侧抑制。

公开(公告)号：US11470579B2

公开(公告)日：2022-10-11

申请号：US17066972

申请日：2020-10-09

Applicant: Cisco Technology, Inc.

Inventor： Vishal Satyendra Desai ,  John Blosco ,  Allen Huotari

IPC: H04W72/04 ,  H04W48/18 ,  H04W88/10 ,  H04W36/16 ,  H04W74/08 ,  H04W36/32 ,  H04W84/04 ,  H04W36/22 ,  H04W48/20 ,  H04W88/08 ,  H04W36/04

Abstract: Embodiments herein describe using a dual assess point (AP) to establish two access points that both are established by two individual radios (e.g., two 5 GHz radios). Generally, APs experience highly degraded performance when two co-located radios operate within the same band. In one embodiment, AP devices can deploy same band radios using a macro-micro cell approach. Thus, the AP may intelligently hand off client devices between the micro and macro cell in a way that optimizes the system for overall throughput and low packet latency while creating minimal oscillation of clients between cells. The embodiments in this disclosure disclose techniques that direct clients in a manner that optimizes these factors.

公开(公告)号：US10805906B2

公开(公告)日：2020-10-13

申请号：US16054603

申请日：2018-08-03

Applicant: Cisco Technology, Inc.

Inventor： Vishal Satyendra Desai ,  John Blosco ,  Allen Huotari

IPC: H04W72/04 ,  H04W48/18 ,  H04W88/10 ,  H04W36/16 ,  H04W74/08 ,  H04W36/32 ,  H04W84/04 ,  H04W36/22 ,  H04W36/04 ,  H04W48/20 ,  H04W88/08

Abstract: Embodiments herein describe using a dual assess point (AP) to establish two access points that both are established by two individual radios (e.g., two 5 GHz radios). Generally, APs experience highly degraded performance when two co-located radios operate within the same band. In one embodiment, AP devices can deploy same band radios using a macro-micro cell approach. Thus, the AP may intelligently hand off client devices between the micro and macro cell in a way that optimizes the system for overall throughput and low packet latency while creating minimal oscillation of clients between cells. The embodiments in this disclosure disclose techniques that direct clients in a manner that optimizes these factors.

公开(公告)号：US08971443B2

公开(公告)日：2015-03-03

申请号：US13780598

申请日：2013-02-28

Applicant: Cisco Technology, Inc.

Inventor： John Blosco ,  James Friedmann ,  Greg Corsetto

IPC: H04L27/00 ,  H04B7/06 ,  H04B7/04

CPC classification number: H04B7/0691 ,  H04B7/0413 ,  H04B7/0671

Abstract: Techniques are presented to reduce the number of antennas used for a transmission for a given antenna configuration and data rate. At a wireless communication device having a plurality of antennas and capable of sending a transmission via one or more of the plurality of antennas, a determination is made of a data rate and antenna configuration to be used for a transmission. A comparison is made between a total transmit power for a minimum number of antennas for the data rate to be used for the transmission and a total transmit power associated with the antenna configuration for the transmission. When the total transmit power for a minimum number of antennas for the data rate is greater than the total transmit power associated with the antenna configuration for the transmission, the transmission is sent with the minimum number of antennas.

Abstract translation: 呈现技术以减少用于给定天线配置和数据速率的传输的天线数量。 在具有多个天线并且能够经由多个天线中的一个或多个天线发送传输的无线通信设备中，确定要用于传输的数据速率和天线配置。 对于要用于传输的数据速率的最小数量天线的总发射功率和与用于传输的天线配置相关联的总发射功率进行比较。 当用于数据速率的最小数量的天线的总发射功率大于与用于传输的天线配置相关联的总发射功率时，以最小数量的天线发送传输。

公开(公告)号：US20140098681A1

公开(公告)日：2014-04-10

申请号：US13645565

申请日：2012-10-05

Applicant: CISCO TECHNOLOGY, INC.

Inventor： Paul J. Stager ,  Matthew A. Silverman ,  Zhigang Gao ,  John Blosco ,  Raghuram Rangarajan

IPC: H04B15/00 ,  H04W24/00 ,  H04W84/12

CPC classification number: H04W72/082 ,  H04L5/0073 ,  H04W24/02 ,  H04W72/0426 ,  H04W72/046 ,  H04W84/12 ,  H04W88/08

Abstract: In a wireless local are network, each of multiple access points, in a high density deployment, are configured to suppress co-channel interference. A first access point having a plurality of antennas beamforms a transmission to a wireless client device within a null-space or with the weakest singular eigenmodes of a wireless channel between the first access point and at least one co-channel second access point. Techniques are presented herein for situations in which any given access point has two or more co-channel access points. In addition, an access point may perform receive side suppression with respect to a transmission (made by a co-channel access point to one of its associated wireless client devices) that is received from that co-channel access point.

Abstract translation: 在无线本地是网络中，以高密度部署的多个接入点中的每一个被配置为抑制同信道干扰。 具有多个天线的第一接入点波束在零空间内或在第一接入点与至少一个同频道第二接入点之间的无线信道的最弱奇异本征模式中形成向无线客户端设备的传输。 本文给出了任何给定接入点具有两个或更多个同频道接入点的情况的技术。 此外，接入点可以针对从该同频道接入点接收到的传输（由与其相关联的无线客户端设备之一的同频道接入点进行的）进行接收侧抑制。

公开(公告)号：US10701627B2

公开(公告)日：2020-06-30

申请号：US16281284

申请日：2019-02-21

Applicant: Cisco Technology, Inc.

Inventor： Vishal Desai ,  Tak Ming Pang ,  John Blosco

IPC: H04W52/02 ,  H04W48/20 ,  H04W52/18 ,  H04L5/00 ,  H04L12/26 ,  H04W24/02 ,  H04W52/24 ,  H04W84/12

Abstract: In one embodiment, a method implemented on a computing device includes: selecting a wireless access point (AP) to process from among a deployment of wireless access points (APs), defining a neighborhood based on the AP and neighboring APs, where the neighboring APs are within a one-hop radius of the AP, calculating a client distribution optimal received signal strength indicator (RSSI), where the client distribution optimal RSSI (CD optimal) is a minimum receiver start of packet detection threshold (RX-SOP) setting for maintaining existing client device coverage by the AP, calculating a neighbor relations optimal RSSI threshold (NR optimal), where the NR optimal is a function of at least a transmit power control threshold (TPC) for maintaining visibility between the AP and the neighboring APs, calculating an RX-SOP setting for the AP as a function of CD optimal and NR optimal, and applying the RX-SOP setting to the AP.

公开(公告)号：US10251123B2

公开(公告)日：2019-04-02

申请号：US15644785

申请日：2017-07-09

Applicant: Cisco Technology, Inc.

Inventor： Vishal Desai ,  Tak Ming Pang ,  John Blosco

IPC: H04W52/02 ,  H04W48/20 ,  H04W52/18 ,  H04L5/00 ,  H04L12/26 ,  H04W24/02 ,  H04W84/12

Abstract: In one embodiment, a method implemented on a computing device includes: selecting a wireless access point (AP) to process from among a deployment of wireless access points (APs), defining a neighborhood based on the AP and neighboring APs, where the neighboring APs are within a one-hop radius of the AP, calculating a client distribution optimal received signal strength indicator (RSSI), where the client distribution optimal RSSI (CD optimal) is a minimum receiver start of packet detection threshold (RX-SOP) setting for maintaining existing client device coverage by the AP, calculating a neighbor relations optimal RSSI threshold (NR optimal), where the NR optimal is a function of at least a transmit power control threshold (TPC) for maintaining visibility between the AP and the neighboring APs, calculating an RX-SOP setting for the AP as a function of CD optimal and NR optimal, and applying the RX-SOP setting to the AP.