公开(公告)号：US20250080470A1

公开(公告)日：2025-03-06

申请号：US18818919

申请日：2024-08-29

Applicant: Cisco Technology, Inc.

Inventor： Binita GUPTA ,  Malcolm M. SMITH ,  Brian D. HART ,  Venkataprasad CHIRREDDY

IPC: H04L47/2441 ,  H04W28/02

Abstract: The present disclosure provides techniques for QoS negotiation for uplink and downlink traffic. A network device receives a Stream Classification Service (SCS) request from an associated station (STA). The SCS request comprises one or more sets of traffic class (TCLAS) information and a preferred traffic identifier (TID) value for a data flow transmitted between the STA and the network device. The network device determines a type of service of the data flow by analyzing the one or more sets of TCLAS information. The network device confirms that the type of service does not align with the preferred TID value under one or more defined network policies. In response to the confirmation, the network device sends an SCS response to the STA comprising adjustments of at least one of the one or more sets of TCLAS information or the preferred TID value to a new TID value.

公开(公告)号：US20240381430A1

公开(公告)日：2024-11-14

申请号：US18452471

申请日：2023-08-18

Applicant: Cisco Technology, Inc.

Inventor： Malcolm M. SMITH ,  Brian D. HART ,  Matthew A. SILVERMAN ,  Robert E. BARTON

IPC: H04W74/08

Abstract: A signaling mechanism is provided that includes a restricted random access resource unit (XRA RU) that restricts uplink random access, such as by using Uplink Orthogonal frequency-division multiple access-based Random Access (UORA), to a subset of a plurality of stations that are associated with an Access Point (AP). In one aspect, an AP allocates a resource unit as an XRA RU that restricts uplink random access to a subset of a plurality of stations (STAs) that are associated with the AP. The AP transmits an uplink trigger that includes the XRA RU. The AP restricts use of the XRA RU to the subset of the plurality of STAs. In this way, STAs of the subset can attempt contention-based random access with the XRA RU while other STAs are prevented from attempting random access with the XRA RU.

公开(公告)号：US20240380559A1

公开(公告)日：2024-11-14

申请号：US18359737

申请日：2023-07-26

Applicant: Cisco Technology, Inc.

Inventor： Matthew A. SILVERMAN ,  Brian D. HART ,  Sivadeep R. KALAVAKURU ,  Ardalan ALIZADEH ,  John M. SWARTZ

IPC: H04L5/00

Abstract: The present disclosure describes a network and a method of operating the network. The method includes determining that a portion of a first channel of a first access point overlaps a portion of a second channel of a second access point and in response to determining that the portion of the first channel overlaps the portion of the second channel, adjusting the first access point so that the first access point refrains from transmitting using frequencies in the portion of the first channel that the second access point uses to transmit pilot tones in the portion of the second channel.

公开(公告)号：US20240365247A1

公开(公告)日：2024-10-31

申请号：US18309710

申请日：2023-04-28

Applicant: Cisco Technology, Inc.

Inventor： Brian D. HART ,  Matthew A. SILVERMAN ,  Malcolm M. SMITH

IPC: H04W52/28 ,  H04W28/02

CPC classification number: H04W52/281 ,  H04W28/0268

Abstract: A preemption service in a wireless network is described. The preemption network increases the reliability of preemption traffic to be quickly delivered over the wireless network. The active preemption service in wireless networks causes the devices in a wireless network to enter a low transmit power state where every device transmits at a power lower than a high or maximum transmission power. Preemption traffic is transmitted from authorized devices at a high or maximum power, over the lower power transmissions, in order to provide an increased guarantee that the preemption traffic will arrive at the intended recipient.

公开(公告)号：US20240340781A1

公开(公告)日：2024-10-10

申请号：US18295687

申请日：2023-04-04

Applicant: Cisco Technology, Inc.

Inventor： Shailender POTHARAJU ,  Srinath GUNDAVELLI ,  Brian D. HART ,  Timothy P. STAMMERS

IPC: H04W48/18 ,  H04W48/02 ,  H04W48/08

CPC classification number: H04W48/18 ,  H04W48/02 ,  H04W48/08 ,  H04W84/12

Abstract: Embodiments herein describe techniques for mapping cellular slices to a Wi-Fi Network. It may be advantageous to port the slice constructs from a cellular network (e.g., 5G) to the Wi-Fi system. In one embodiment, templates are established for each slice which define different parameters that are used when the slice is implemented on a cellular network and a Wi-Fi network. A service provider can establish a template for each slice. In one embodiment, the template includes parameters for each slice for both cellular and Wi-Fi networks.

公开(公告)号：US20240334324A1

公开(公告)日：2024-10-03

申请号：US18194500

申请日：2023-03-31

Applicant: Cisco Technology, Inc.

Inventor： Brian D. HART ,  Pooya MONAJEMI

IPC: H04W52/02

CPC classification number: H04W52/0216 ,  H04W52/0238

Abstract: Embodiments herein describe waking up client devices using a physical layer protocol data unit (PPDU) with a preamble extension field with a length that permits the client device to wake up a higher power (or higher capability) radio. In one embodiment, a first portion of a preamble of the PPDU is received at the client device using a lower power (or lower capability) receiver. This triggers the client device to wake up its higher power receiver, which occurs while the client device receives the preamble extension field. At the end of the preamble extension field, the client device then receives the remaining portion of the PPDU using its higher power receiver.

公开(公告)号：US20240334288A1

公开(公告)日：2024-10-03

申请号：US18193410

申请日：2023-03-30

Applicant: Cisco Technology, Inc.

Inventor： Malcolm M. SMITH ,  Pooya MONAJEMI ,  Brian D. HART ,  Matthew A. SILVERMAN

IPC: H04W36/18 ,  H04W8/02 ,  H04W36/08 ,  H04W48/16

CPC classification number: H04W36/18 ,  H04W8/02 ,  H04W36/08 ,  H04W48/16 ,  H04W84/12

Abstract: Techniques for improved mobility support in wireless networks are provided. A first beacon from a first wireless AP is received, where the first beacon comprises a network identifier (NID) and a service set identifier (SSID). A client device associates to the first wireless AP. Based on the NID, a set of services supported by the first wireless AP are determined. A second beacon is received from a second wireless AP, where the second beacon comprises the first NID, and the client device associates to the second wireless AP based on determining, based on the NID, that the second wireless AP supports the set of services.

公开(公告)号：US20210058221A1

公开(公告)日：2021-02-25

申请号：US16550080

申请日：2019-08-23

Applicant: Cisco Technology, Inc.

Inventor： Mukesh TANEJA ,  Brian D. HART

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

Abstract: Bi-directional and full-duplex communication is provided by allocating Resource Units (RU) to Stations (STAs), wherein a first RU of a plurality of RUs in a Protocol Data Unit (PDU) is allocated to a first STA of a plurality of connected STAs as a bidirectional (BD) RU for full-duplex communications with the first STA; transmitting a generalized-trigger to the plurality of connected STAs to assign the plurality of RUs; transmitting downlink (DL) communications on DL RUs of the plurality RUs and the BD RU; and receiving uplink (UL) communications on UL RUs of the plurality of RUs and the BD RU. The UL RUs may be delayed by a predefined amount of time relative to the DL RUs of the plurality of RUs. In some embodiments, the BD RU Traffic is a reassigned RU scheduled for an opposite direction of communication in the PDU.

公开(公告)号：US20190238368A1

公开(公告)日：2019-08-01

申请号：US16378411

申请日：2019-04-08

Applicant: Cisco Technology, Inc.

Inventor： Mithat C. DOGAN ,  Brian D. HART ,  Jiunming HUANG ,  Matthew A. SILVERMAN

IPC: H04L25/02 ,  H04L25/03 ,  H04B7/0413

CPC classification number: H04L25/0246 ,  H04B7/0413 ,  H04L25/0204 ,  H04L25/0244 ,  H04L25/03159 ,  H04W84/12 ,  H04W88/12

Abstract: The embodiments herein use a factorization based technique for determining filter coefficients for a subset of the subcarriers in a wireless frequency band. Once the filter coefficients for the subset of the subcarriers are calculated, the network device uses these filter coefficients to identify the filter coefficients in a neighboring subcarrier. To do so, the network device uses pseudo-inverse iteration to convert the already calculated filter coefficients into filter coefficients for a neighboring subcarrier. The network device can repeat this process for the next set of neighboring subcarriers until all the filter coefficients have been calculated.

公开(公告)号：US20180234141A1

公开(公告)日：2018-08-16

申请号：US15431539

申请日：2017-02-13

Applicant: Cisco Technology, Inc.

Inventor： Matthew A. SILVERMAN ,  Paul J. STAGER ,  David S. KLOPER ,  Brian D. HART ,  Qing ZHAO

IPC: H04B7/0452 ,  H04L12/26

CPC classification number: H04B7/0452 ,  H04L41/0893 ,  H04L43/0894

Abstract: Embodiments herein describe a network device (e.g., an access point) that dynamically arranges multi-user (MU) multiple input multiple output (MIMO) compatible client devices into MU-MIMO groups. That is, the network device uses network metrics and historical data to change the assignment of client devices in the MU-MIMO groups which may improve MU-MIMO efficiency by reducing the amount of power that leaks between the clients devices in the group. In one embodiment, the AP identifies a MU-MIMO group based on a performance evaluation such as evaluating network metric or determining if the group is underutilized. The AP can replace the identified MU-MIMO group with a substitute MU-MIMO group where the substitute MU-MIMO group is selected based on historical data corresponding to the client devices assigned to the substitute MU-MIMO group.