公开(公告)号：US20240430794A1

公开(公告)日：2024-12-26

申请号：US18341637

申请日：2023-06-26

Applicant: Cisco Technology, Inc.

Inventor： Clark A. Carty ,  Dan Duckworth ,  Kasi R. Nalamalapu ,  Jun Liu ,  Ruifeng Xue

IPC: H04W52/02

Abstract: Various methods, systems, and/or processes are described herein to create more sustainable configurations of wireless Access Points (APs), switches, and other network devices based upon network speed, client demand, among other factors. Clients may wirelessly couple to an AP using a variety of different technologies. The clients may be distributed over these frequency bands in an optimal manner allowing minimum use of transceiver power. The network link speed between the AP and the Ethernet switch may also be dynamically adjusted. These configurations may dynamically change over time as client demand or network traffic increases or decreases. In certain other configurations, the APs may have a higher wireless throughput than the ethernet connections to the network. In these instances, sustainable configurations can be achieved by powering down transceivers, radio chains, and/or processor cores. Traffic and other events may trigger the need for new sustainable configurations to be generated and applied.

公开(公告)号：US20240187983A1

公开(公告)日：2024-06-06

申请号：US18073661

申请日：2022-12-02

Applicant: Cisco Technology, Inc.

Inventor： Ruifeng Xue ,  Kai Ma ,  Xiangpeng Yao ,  Li Zhang ,  Baojun Zhang ,  Jun Liu

IPC: H04W52/02

CPC classification number: H04W52/0206

Abstract: A method, computer system, and computer program product are provided for dynamic power saving for wireless access points. It is determined that a wireless client has not requested to connect to a first access point for a first threshold duration of time. Power is disabled to one or more front-end modules of a plurality of front-end modules associated with the first access point except for one designated front-end module that remains powered. Monitoring is performed for an incoming request to connect to the first access point. Power is restored to the one or more front-end modules of the plurality of front-end modules.

公开(公告)号：US20220190919A1

公开(公告)日：2022-06-16

申请号：US17688114

申请日：2022-03-07

Applicant: Cisco Technology, Inc.

Inventor： Xiangpeng Yao ,  Jianquan Lou ,  Alpesh Umakant Bhobe ,  Baojun Zhang ,  Jun Liu

IPC: H04B10/2525 ,  H04B10/2507 ,  H04B10/079

Abstract: A method in which a plurality of transmit signals are generated at data rates that are offset from each other by inserting an idle data block into a data stream for one or more transmit signals of the plurality of transmit signals to increase a data rate for the one or more transmit signals, thereby minimizing detectable electromagnetic interference at a particular frequency. The method further includes converting each transmit signal of the plurality of transmit signals to a corresponding optical transmit signal of a plurality of optical transmit signals for transmission via a corresponding channel of a plurality of channels of an optical network device and transmitting the plurality of optical transmit signals via respective ones of the plurality of channels for transmission on respective optical fibers.

公开(公告)号：US11063781B2

公开(公告)日：2021-07-13

申请号：US16660447

申请日：2019-10-22

Applicant: Cisco Technology, Inc.

Inventor： Jun Liu ,  Jing Wang ,  Yong Wang ,  Kathy Xia Ke

IPC: H04L12/18 ,  H04L12/46 ,  H04L12/66 ,  H04W40/22 ,  H04W84/12

Abstract: Systems and methods herein can convert downstream group addressed packets to unicast packets and send them to Workgroup Bridges (WGBs) by Downlink (DL) Multiple-User (MU) Orthogonal Frequency Division Multiple Access (OFDMA) (DL-MU-OFDMA). A Wireless Controller (WLC)/Access Point (AP) can extend current Inter-Access Point Protocol (IAPP) messages for broadcast and deploy Internet Group Management Protocol (IGMP) processing for multicast messages. The APs can maintain WGB entries for each group address. When there is a downstream broadcast packet received at the AP, the AP can search the entries in the domain and can build a 4-address unicast packet for each WGB, then transmit those converted packets in parallel by DL-OFDMA. After receiving those converted packets over the air, the WGB simply rebuilds 802.3 packets and forwards the 802.3 packets to the corresponding VLAN domain.

公开(公告)号：US20210127309A1

公开(公告)日：2021-04-29

申请号：US17142638

申请日：2021-01-06

Applicant: Cisco Technology, Inc.

Inventor： Akram Ismail Sheriff ,  Xiaoguang Jason Chen ,  Jun Liu ,  Robert Edgar Barton ,  Jerome Henry

IPC: H04W36/00 ,  H04W4/40 ,  H04W36/32 ,  H04W36/38

Abstract: In one embodiment, a device in a wireless network receives telemetry data from a plurality of autonomous vehicles. The telemetry data is indicative of radio signal quality metrics experienced by the vehicles at a particular location over time. The device forms an array of wireless roaming thresholds by applying regression to the telemetry data. The device computes an optimum roaming threshold from the array of wireless roaming thresholds to be used by the vehicles when approaching the location. The device triggers, based on the computed optimum threshold, one or more of the autonomous vehicles to initiate access point roaming when approaching the particular location.

公开(公告)号：US20210119815A1

公开(公告)日：2021-04-22

申请号：US16660447

申请日：2019-10-22

Applicant: Cisco Technology, Inc.

Inventor： Jun Liu ,  Jing Wang ,  Yong Wang ,  Kathy Xia Ke

IPC: H04L12/18 ,  H04L12/46 ,  H04W40/22 ,  H04L12/66

Abstract: Systems and methods herein can convert downstream group addressed packets to unicast packets and send them to Workgroup Bridges (WGBs) by Downlink (DL) Multiple-User (MU) Orthogonal Frequency Division Multiple Access (OFDMA) (DL-MU-OFDMA). A Wireless Controller (WLC)/Access Point (AP) can extend current Inter-Access Point Protocol (IAPP) messages for broadcast and deploy Internet Group Management Protocol (IGMP) processing for multicast messages. The APs can maintain WGB entries for each group address. When there is a downstream broadcast packet received at the AP, the AP can search the entries in the domain and can build a 4-address unicast packet for each WGB, then transmit those converted packets in parallel by DL-OFDMA. After receiving those converted packets over the air, the WGB simply rebuilds 802.3 packets and forwards the 802.3 packets to the corresponding VLAN domain.

公开(公告)号：US10708756B2

公开(公告)日：2020-07-07

申请号：US16214444

申请日：2018-12-10

Applicant: Cisco Technology, Inc.

Inventor： Linyu Lu ,  Jun Liu ,  Xia Ke ,  Xiaoguang Jason Chen

IPC: H04W8/02 ,  H04W12/06 ,  H04W76/10 ,  H04W36/32 ,  H04W84/00 ,  H04W92/10

Abstract: An apparatus includes a first wireless bridge device configured to transmit signals to and receive signals from wireless network access points located along a pathway, and a second wireless bridge device configured to transmit signals to and receive signals from the wireless network access points. The first wireless bridge device and the second wireless bridge device are coupled to and communicate with each other. When the first wireless bridge device is wirelessly connected to a first access point and about to initiate a roaming mode to attempt to wirelessly connect to a second access point, the first wireless bridge device notifies the second wireless bridge device of the initiating of the roaming mode and determines whether the second wireless bridge device is in the roaming mode while the apparatus is moving along the pathway.

公开(公告)号：US10194308B2

公开(公告)日：2019-01-29

申请号：US15472417

申请日：2017-03-29

Applicant: Cisco Technology, Inc.

Inventor： Linyu Lu ,  Jun Liu ,  Xia Ke ,  Xiaoguang Jason Chen

IPC: H04W8/02 ,  H04W12/06 ,  H04W76/10 ,  H04W92/10

Abstract: An apparatus includes a first wireless bridge device configured to transmit signals to and receive signals from wireless network access points located along a pathway, and a second wireless bridge device configured to transmit signals to and receive signals from the wireless network access points. The first wireless bridge device and the second wireless bridge device are coupled to and communicate with each other. When the first wireless bridge device is wirelessly connected to a first access point and about to initiate a roaming mode to attempt to wirelessly connect to a second access point, the first wireless bridge device notifies the second wireless bridge device of the initiating of the roaming mode and determines whether the second wireless bridge device is in the roaming mode while the apparatus is moving along the pathway.

公开(公告)号：US10063467B2

公开(公告)日：2018-08-28

申请号：US14714611

申请日：2015-05-18

Applicant: Cisco Technology, Inc.

Inventor： Jun Liu ,  Zhiyong Fang ,  Bin Shi ,  Feng Cai

IPC: H04L12/721 ,  H04L12/46 ,  H04L12/715

CPC classification number: H04L45/38 ,  H04L12/4633 ,  H04L45/64

Abstract: A tunnel endpoint of a virtual network monitors the flows between the tunnel endpoint and at least one other tunnel endpoint. The virtual network spans a physical network. A flow identifier for each flow is determined based on packet headers of packets in each respective flow. A path identifier for each flow is also determined based on the packet headers of the packets in each respective flow. Each path identifier indicates a route that the respective flow takes in the physical network to reach the respective destination tunnel endpoint. The path identifier and the flow identifier of the respective flows are then transmitted to a controller of the virtual network.