公开(公告)号：US20250119221A1

公开(公告)日：2025-04-10

申请号：US18906804

申请日：2024-10-04

Applicant: Cisco Technology, Inc.

Inventor： Jerome Henry ,  Laurent Pierrugues ,  Behrouz Shayesteh

IPC: H04B17/318

Abstract: In one aspect, a system includes a station device configured to transmit a signal; multiple access point devices in connection with the station device, the multiple access point devices configured to receive the signal transmitted from the station device, wherein the multiple access point devices are configured to convert the signal into a measurable form; and a processing unit operably connected to the multiple access point devices. The processing unit is configured to, for each subcarrier within the signal received by the multiple access point devices, determine a measurement of channel state information including an overall shape of the signal; determine a magnitude distance for each subcarrier; and determine a location of the station device based on a fit of the magnitude distance to a model, wherein the model is based on an environment with one or more obstacles causing an obscuration of the signal.

公开(公告)号：US12267915B2

公开(公告)日：2025-04-01

申请号：US17355686

申请日：2021-06-23

Applicant: Cisco Technology, Inc.

Inventor： Shankar Ramanathan ,  Nagendra Kumar Nainar ,  Robert E. Barton ,  Jerome Henry

IPC: H04W8/26 ,  H04W4/02 ,  H04W12/12

Abstract: A network infrastructure component determines a risk measurement associated with a wireless client device's use of a device address, and provides an advisory with respect to an address rotation strategy of the wireless client device based on the risk measurement. In some embodiments, the risk measurement is based on one or more of an exposure, by the wireless client device, of information on the wireless network that identifies the wireless client device and/or a characterization of a security of the wireless network environment in which the wireless client device operates.

公开(公告)号：US12267101B2

公开(公告)日：2025-04-01

申请号：US18301511

申请日：2023-04-17

Applicant: Cisco Technology, Inc.

Inventor： Matthew Aaron Silverman ,  Robert E. Barton ,  Brian D. Hart ,  Jerome Henry ,  Ardalan Alizadeh ,  Vishal S. Desai ,  John Matthew Swartz

IPC: H04B1/7183 ,  H04W84/12

Abstract: Access Point ranging and placement on a floorplan may be provided. A host AP may range each neighbor AP of the host AP. One or more neighbor APs that failed ranging with the host AP may be categorized in a failed neighbor AP list. The host AP may re-range each of the one or more neighbor APs in the failed neighbor AP list with a modified ranging parameter. At least one neighbor AP of the one or more neighbor APs may be categorized in the failed neighbor AP list that succeeded in re-ranging with the host AP in an extended range neighbor AP list.

公开(公告)号：US12262450B2

公开(公告)日：2025-03-25

申请号：US18476737

申请日：2023-09-28

Applicant: Cisco Technology, Inc.

Inventor： Jerome Henry ,  Nancy Cam-Winget ,  Simone Arena ,  Darrin Joseph Miller ,  Sudhir Kumar Jain ,  Einar Nilsen-Nygaard

IPC: H04W8/24 ,  H04L61/5053 ,  H04L101/622 ,  H04W28/02 ,  H04W28/086

Abstract: Embodiments identify a station that rotates an over the air station address. As address rotation was not originally designed into wireless networks, the rotation can introduce communication challenges for the station. The embodiments derive that traffic referencing two different over the air station addresses are associated with a single common station. This is accomplished by determining a similarity between properties of two sets of traffic. A first set of traffic references the first over the air station address and a second set of traffic references the second over the air station address. If the properties common across the two sets of traffic indicate sufficient similarity, the embodiments determine that both sets of traffic are associated with a single device. Network configuration of the device is then adjusted based on the determination.

公开(公告)号：US20250097774A1

公开(公告)日：2025-03-20

申请号：US18470106

申请日：2023-09-19

Applicant: Cisco Technology, Inc.

Inventor： Jerome Henry ,  Akram Sheriff ,  Robert Edgar Barton

IPC: H04W28/16 ,  H04L5/00 ,  H04W24/10 ,  H04W28/08

Abstract: A system and method are provided for timing measurement in a wireless network to determine a location of a station (STA). A channel stability is determined for a channel between an initiating station (ISTA) and a first responding station (RSTA). A request for a first timing-measurement exchange is sent from the ISTA and the first RSTA. Parameters are negotiated for the first timing-measurement exchange based on the determined channel stability, and then the timing-measurement exchange is performed to generate a first set of times. This process is then repeated for another timing-measurement exchange between the ISTA and a second RSTA to generate a second set of times. A location of the ISTA is determined based on the first and the second sets of times.

公开(公告)号：US20250093530A1

公开(公告)日：2025-03-20

申请号：US18467040

申请日：2023-09-14

Applicant: Cisco Technology, Inc.

Inventor： Ardalan Alizadeh ,  Navid Reyhanian ,  Audrey Yazdanparast ,  Peiman Amini ,  Jerome Henry

IPC: G01S19/48

Abstract: Described herein are devices, systems, methods, and processes for managing the computational complexity in geolocating a large number of network devices (e.g., access points (APs)) in indoor environments. A number of network devices may be partitioned into smaller groups or batches based on neighbor knowledge about the network devices. Each batch of network devices can include just devices located on a same floor, or may include devices located across different floors. Every batch may include at least one anchor network device. The geolocation of the network devices can be determined, batch-by-batch, based on fusing global navigation satellite system (GNSS) pseudorange measurements and inter-network device ranging measurements. The geolocation accuracy for each partition can be evaluated utilizing such metrics as the average residual error. If the error for a batch is greater than a threshold, remedial measures may be taken to reduce the error and improve the geolocation accuracy.

公开(公告)号：US12256355B2

公开(公告)日：2025-03-18

申请号：US18200231

申请日：2023-05-22

Applicant: Cisco Technology, Inc.

Inventor： Malcolm Muir Smith ,  Jerome Henry

IPC: H04W56/00 ,  H04L43/0864

Abstract: This technology allows time synchronization in wireless networks with mobile stations. A wireless network controller transmits instructions to access points (“APs”) within the wireless network to monitor transmissions for time synchronization. One or more second APs observe fine time measurement (“FTM”) exchanges between a first AP and a mobile station. A particular second AP determines whether to perform a time synchronization with the first AP based on the detection of the FTM exchange or a determination that the station is moving toward the second AP. For time synchronization, the second AP determines the time that the first AP transmitted the FTM exchange and the time of transmission from the first AP to the second AP. The second AP synchronizes a second AP clock to the summation of the time of the transmission of the FTM exchange and the time of transmission from the first AP to the second AP.

公开(公告)号：US20250085442A1

公开(公告)日：2025-03-13

申请号：US18466716

申请日：2023-09-13

Applicant: Cisco Technology, Inc.

Inventor： Jerome Henry ,  Peiman Amini ,  Ardalan Alizadeh ,  Niloo Bahadori

IPC: G01S19/50 ,  G01S19/30 ,  G01S19/48

Abstract: Devices, systems, methods, and processes for accurately determining a location of a device are described herein. The device may receive Global Navigation Satellite System (GNSS) data from two satellites in two time periods. The device can determine two pseudo range differences corresponding to the two satellites. The device may further determine two contours based on the two pseudo range differences. An overlap between the two contours may be utilized by the device to determine the location. The device can also determine the location of the device based on a contour and an estimated location. The device may utilize a Global Positioning System (GPS) database, an Access Points (AP) database, or one or more servers to retrieve the estimated location. The device can further configure an operating frequency and an output power based on the location in real-time.

公开(公告)号：US20250080564A1

公开(公告)日：2025-03-06

申请号：US18460786

申请日：2023-09-05

Applicant: Cisco Technology, Inc.

Inventor： Robert Edgar Barton ,  Bhavik Pradeep Shah ,  Indermeet Singh Gandhi ,  Jerome Henry

IPC: H04L9/40

Abstract: Provided herein are techniques to facilitate vulnerability management for one or more endpoint devices of a network based on network infrastructure security context. In one example, a computer-implemented method may include determining a base vulnerability score for a particular vulnerability that is detected for an endpoint device of an enterprise network; determining topology information for the endpoint device within the enterprise network; translating the particular vulnerability to triggering information; performing a comparison between the security policies for the one or more network security mechanisms of network security infrastructure and the triggering information to determine whether the endpoint device is protected from the particular vulnerability being triggered for the endpoint device; and generating an updated vulnerability score for the particular vulnerability by adjusting the base vulnerability score based on whether the endpoint device is protected from the particular vulnerability being triggered for the endpoint device.

公开(公告)号：US12231395B2

公开(公告)日：2025-02-18

申请号：US18476821

申请日：2023-09-28

Applicant: Cisco Technology, Inc.

Inventor： Jerome Henry ,  Robert E. Barton ,  Stephen Michael Orr

IPC: H04L61/5038 ,  H04W84/12 ,  H04L101/622

Abstract: Techniques herein facilitate a device address rotation management protocol that may be implemented for a wireless local area network (WLAN), which can be used to influence when wireless client devices or stations may rotate their Media Access Control (MAC) addresses, how to perform such rotations, and/or the like. In one example, a method may include providing, by an access point (AP), a first communication indicating that the AP supports a MAC address rotation management protocol; obtaining, by the AP, a second communication from a wireless station (STA) indicating that the STA intends to perform a MAC address rotation; and transmitting, by the AP, a third communication to influence the MAC address rotation of the STA, the third communication comprising a rotation status indicator and timing information.