公开(公告)号：US11714154B2

公开(公告)日：2023-08-01

申请号：US16867410

申请日：2020-05-05

Applicant: Cisco Technology, Inc.

Inventor： Zhigang Gao ,  Matthew A. Silverman ,  Fred J. Anderson ,  Huaiyi Wang

IPC: G01S3/14 ,  G01S3/74 ,  G01S5/02

CPC classification number: G01S3/143 ,  G01S3/74 ,  G01S5/0284

Abstract: Techniques for determining a location of a client device using recursive phase vector subspace estimation are described. One technique includes receiving a plurality of angle-of-arrival (AoA) measurements from a plurality of access points (APs). Each AoA measurement includes a plurality of entries for phase values measured from a signal received from a client device at the plurality of APs. At least one AoA measurement of the plurality of AoA measurements that includes at least one of: (i) one or more entries with missing phase values and (ii) one or more entries with erroneous phase values is identified, based on a recursive phase estimation. The plurality of AoA measurements are updated based on the identified at least one AoA measurement. The location of the client device is determined, based on the updated plurality of AoA measurements.

公开(公告)号：US20230156548A1

公开(公告)日：2023-05-18

申请号：US17529170

申请日：2021-11-17

Applicant: Cisco Technology, Inc.

Inventor： Fred J. Anderson ,  Shailender Potharaju ,  Indermeet Singh Gandhi ,  Clark Carty

IPC: H04W36/14 ,  H04W8/24 ,  H04W16/14

CPC classification number: H04W36/14 ,  H04W8/24 ,  H04W16/14 ,  H04W88/10

Abstract: System, methods, and computer-readable media for switching a dynamic radio of a single RU between Radio Access Technology (RAT) protocols based on a Software-Defined RAN intelligent controller (SD-RIC). The SD-RIC efficiently assigning RAN resources by converting a radio access point to either 5G or Wi-Fi based on the load conditions and the number of users seen on the network, so that it appropriately servers the customer and end devices. To determine the load conditions may be based on active users on a particular cell, and then the resource utilization cue is a connection latency. A single radio unit includes a primary radio and a secondary radio, each being independently tuned. The primary radio is static while a secondary one can be influenced based on the conditions, turning into N-RU or Wi-Fi.

公开(公告)号：US11024961B2

公开(公告)日：2021-06-01

申请号：US16875655

申请日：2020-05-15

Applicant: Cisco Technology, Inc.

Inventor： Fred J. Anderson ,  Danielle N. Bane ,  John M. Blosco ,  Paul J. Stager ,  Daniel N. Johnson ,  Timothy A. Frank ,  John M. Swartz

IPC: H04B7/0413 ,  H01Q3/36 ,  H04B7/06

Abstract: An electronically a steerable and switchable antenna array is provided that can produce a first beam with a first coverage range and a second beam with a second coverage range by selecting one of a first and a second beamwidth for both the first and second beams; in response to selecting the first beamwidth: switching signal inputs to narrow-beam antenna arrays; steering the first beam to one of a first positive, negative, or zero offset position; independently steering the second beam to one of a second positive, negative offset, or zero offset position; and transmitting signals received from the signal inputs via the first beam and the second beam; and in response to selecting the second beamwidth: switching signal inputs to wide-beam antenna arrays; and transmitting signals received from the signal inputs via the first beam and the second beam.

公开(公告)号：US10965349B2

公开(公告)日：2021-03-30

申请号：US16559356

申请日：2019-09-03

Applicant: Cisco Technology, Inc.

Inventor： Matthew Aaron Silverman ,  Fred J. Anderson ,  Ardalan Alizadeh ,  Huaiyi Wang

IPC: H04B7/0417 ,  H04B7/06 ,  H04L5/00

Abstract: In one embodiment, a method includes identifying a number of configured proactive repetitions in downlink transmissions from the base station, selecting k antenna states for receiving repetitive downlink transmissions among the number of antenna states, where k equals the number of configured proactive repetitions, and where each of the k antenna states corresponds to each of the repetitive downlink transmissions, transmitting a CSI report for each of the k antenna states to the base station, where a CSI report for an antenna state is used by the base station to adjust configurations for the corresponding downlink transmission, receiving signals for each of the k repetitive downlink transmissions from the base station using each of the k antenna states, and decoding the downlink transmission based on k sets of received signals, each of the k sets being received using each of the k selected antenna states.

公开(公告)号：US20240007985A1

公开(公告)日：2024-01-04

申请号：US17854427

申请日：2022-06-30

Applicant: Cisco Technology, Inc.

Inventor： Shailender Potharaju ,  Indermeet Singh Gandhi ,  Clark A. Carty ,  Fred J. Anderson

IPC: H04W64/00 ,  H04W48/04 ,  H04W48/16 ,  H04W72/04 ,  H04B17/327

CPC classification number: H04W64/00 ,  H04W48/04 ,  H04W48/16 ,  H04W72/0446 ,  H04B17/327

Abstract: A method comprises: at a radio access network configured to communicate with a user equipment (UE) wirelessly, an access and mobility management function (AMF), and a positioning service, and through which the UE attached to a network using an attach procedure with the AMF: upon receiving a request for a location of the UE from the positioning service, scheduling resource blocks, configured for acquiring location measurements, across multiple radio units (RUs) of the radio access network, such that the resource blocks are synchronized in time and frequency across the multiple RUs; by the multiple RUs, exchanging, with the UE, the resource blocks as synchronized, and acquiring the location measurements from the multiple RUs based on exchanging; and forwarding the location measurements to the positioning service to enable the positioning service to determine the location of the UE based on the location measurements.

公开(公告)号：US20230413384A1

公开(公告)日：2023-12-21

申请号：US18460403

申请日：2023-09-01

Applicant: Cisco Technology, Inc.

Inventor： Fred J. Anderson ,  Anand Oswal ,  Rajesh S. Pazhyannur ,  Arun G. Khanna ,  Paul Jeffrey Stager ,  David Stuart Kloper ,  Brian Hart ,  Qing Zhao ,  Jie Cheng Jiang

IPC: H04W88/10 ,  H04W72/0453

CPC classification number: H04W88/10 ,  H04W72/0453 ,  H04W84/042

Abstract: Systems, methods, and computer-readable media for an integrated Wi-Fi Access Point and cellular network Radio Unit (RU) include a communication system interfacing with a wired network for communicating Wi-Fi traffic and cellular network traffic, the communication system integrating a Wi-Fi Access Point (AP) with a cellular network Radio Unit (RU). The Wi-Fi traffic and cellular network traffic can be processed in the communication system. The communication system can interface with at least one programmable Radio Frequency (RF) front end configured for wireless communication over one or more frequency bands for Wi-Fi traffic and one or more frequency bands for cellular network traffic (e.g., 5G, LTE, Wi-Fi).

公开(公告)号：US11785670B2

公开(公告)日：2023-10-10

申请号：US17805347

申请日：2022-06-03

Applicant: Cisco Technology, Inc.

Inventor： Fred J. Anderson ,  Anand Oswal ,  Rajesh S. Pazhyannur ,  Arun G. Khanna ,  Paul Jeffrey Stager ,  David Stuart Kloper ,  Brian Hart ,  Qing Zhao ,  Jie Cheng Jiang

IPC: H04W88/10 ,  H04W72/0453 ,  H04W84/04 ,  H04W84/12

CPC classification number: H04W88/10 ,  H04W72/0453 ,  H04W84/042 ,  H04W84/12

Abstract: Systems, methods, and computer-readable media for an integrated Wi-Fi Access Point and cellular network Radio Unit (RU) include a communication system interfacing with a wired network for communicating Wi-Fi traffic and cellular network traffic, the communication system integrating a Wi-Fi Access Point (AP) with a cellular network Radio Unit (RU). The Wi-Fi traffic and cellular network traffic can be processed in the communication system. The communication system can interface with at least one programmable Radio Frequency (RF) front end configured for wireless communication over one or more frequency bands for Wi-Fi traffic and one or more frequency bands for cellular network traffic (e.g., 5G, LTE, Wi-Fi).

公开(公告)号：US20220295489A1

公开(公告)日：2022-09-15

申请号：US17805347

申请日：2022-06-03

Applicant: Cisco Technology, Inc.

Inventor： Fred J. Anderson ,  Anand Oswal ,  Rajesh S. Pazhyannur ,  Arun G. Khanna ,  Paul Jeffrey Stager ,  David Stuart Kloper ,  Brian Hart ,  Qing Zhao ,  Jie Cheng Jiang

IPC: H04W72/04

Abstract: Systems, methods, and computer-readable media for an integrated Wi-Fi Access Point and cellular network Radio Unit (RU) include a communication system interfacing with a wired network for communicating Wi-Fi traffic and cellular network traffic, the communication system integrating a Wi-Fi Access Point (AP) with a cellular network Radio Unit (RU). The Wi-Fi traffic and cellular network traffic can be processed in the communication system. The communication system can interface with at least one programmable Radio Frequency (RF) front end configured for wireless communication over one or more frequency bands for Wi-Fi traffic and one or more frequency bands for cellular network traffic (e.g., 5G, LTE, Wi-Fi).

公开(公告)号：US11357005B2

公开(公告)日：2022-06-07

申请号：US16845696

申请日：2020-04-10

Applicant: Cisco Technology, Inc.

Inventor： Fred J. Anderson ,  Anand Oswal ,  Rajesh S. Pazhyannur ,  Arun G. Khanna ,  Paul Jeffrey Stager ,  David Stuart Kloper ,  Brian Hart ,  Qing Zhao ,  Jie Cheng Jiang

IPC: H04W72/04 ,  H04W88/10 ,  H04W84/04 ,  H04W84/12

Abstract: Systems, methods, and computer-readable media for an integrated Wi-Fi Access Point and cellular network Radio Unit (RU) include a communication system interfacing with a wired network for communicating Wi-Fi traffic and cellular network traffic, the communication system integrating a Wi-Fi Access Point (AP) with a cellular network Radio Unit (RU). The Wi-Fi traffic and cellular network traffic can be processed in the communication system. The communication system can interface with at least one programmable Radio Frequency (RF) front end configured for wireless communication over one or more frequency bands for Wi-Fi traffic and one or more frequency bands for cellular network traffic (e.g., 5G, LTE, Wi-Fi).

公开(公告)号：US20190068289A1

公开(公告)日：2019-02-28

申请号：US15722083

申请日：2017-10-02

Applicant: Cisco Technology, Inc.

Inventor： Fred J. Anderson ,  Oscar Bejarano Chavez ,  Matthew A. Silverman ,  Paul J. Stager

IPC: H04B10/564 ,  H04B10/079 ,  H04B7/024 ,  H04W52/02

Abstract: Presented herein are techniques to ensure power emitted by APs during a cooperative MIMO transmission is within certain limits. For a transmission to be made from two or more wireless access points using cooperative multiple-input multiple-output (MIMO) techniques, a measure of separation is determined between the two or more access points. Precoding of signals to be transmitted by the two or more access points is adjusted so as to derate the signals to be transmitted or disable the cooperative nature of the transmission from the two or more access point depending on the measure of separation so that a combined output power from the two or more access points is within a limit.