Cisco Patent Grants

Sensor measurement timestamp differences

Granted: December 17, 2024
Patent Number: 12170573
In one embodiment, a device may transmit, via a network to an application, a series of sensor measurements captured by the device, each sensor measurement having an associated timestamp based on a clock of the device. The device may receive, from the application, an indication that at least a portion of the series of sensor measurement were not received by the application. The device may determine, for those sensor measurements not received by the application, timestamp differences…

Simulation of Wi-Fi signal propagation in three-dimensional visualization

Granted: December 17, 2024
Patent Number: 12170546
The present disclosure is directed to 3-D visualization of wireless signal propagation representing wireless signal strength and interference in 3-D space. The present technology can identify a plurality of access points (APs) in the 3-D space, determine a wireless signal strength for each of the plurality of APs, and determine an interference with the wireless signal strength of each of the plurality of APs, wherein the interference is caused by a neighboring AP of the plurality of APs…

Power efficient transformer-based interface circuit to interface a differential current sinking DAC to laser anode

Granted: December 17, 2024
Patent Number: 12170525
An interface circuit that interfaces a digital-to-analog converter (DAC) to a vertical-cavity surface emitting laser. The apparatus includes a first cascode amplifier that receives as input positive and negative differential outputs of the DAC and provides a positive amplified output and a negative amplified output, and a second cascode amplifier having a positive input and a negative input. The positive input of the second cascode amplifier being coupled to the positive amplified output…

Sampling and holding electrical signals with rail-to-rail equivalent output swing

Granted: December 17, 2024
Patent Number: 12170509
A sample and hold circuit providing rail-to rail equivalent output is described. The circuit includes a sample and hold amplifier containing two separate sets of sampling capacitors, one set is coupled to a PMOS transistor differential stage and the other set is coupled to an NMOS transistor differential stage. The differential stages drive a current mirror based push-pull output differential stage to provide an output signal with ranges equivalent to a rail-to rail output signal swing.

Systems and methods for using signed device information to authenticate a user

Granted: December 10, 2024
Patent Number: 12166898
In one embodiment, a method includes establishing, by an identity agent installed on a device, a connection to a browser installed on the device and generating, by the identity agent, first device information, a public key, and a private key. The method also includes communicating, by the identity agent, the first device information and the public key to an authentication service and receiving, by the identity agent, a unique identifier from the authentication service. The method further…

Fan silencer module

Granted: December 10, 2024
Patent Number: 12167567
A fan silencer module includes a housing having a first end of the housing, a second end of the housing, and an interior surface between the first end of the housing and the second end of the housing. Acoustic absorbing material is disposed on the interior surface. A honeycomb air flow director is disposed at the second end of the housing. And an electromagnetic interference gasket surrounds an outer edge of the honeycomb air flow director. In an embodiment, a depth of the…

Application session persistence across dynamic media access control (MAC) address rotations

Granted: December 10, 2024
Patent Number: 12167485
A user device connected to a wireless network maintains session persistence through a MAC address change of a user device. The user device establishes a multi-path communication session including a first subflow associated with a first MAC address for the user device. When the user device changes from the first MAC address to a second MAC address, the user device establishes a second subflow of the multi-path communication session. The second subflow is associated with the second MAC…

Providing enhanced capacity for tenants in a neutral host network via multi-connectivity

Granted: December 10, 2024
Patent Number: 12167483
The present technology is directed to providing enhanced capacity for tenants in a neutral host network (NHN) via multi-connectivity such as dual connectivity or carrier aggregation. The present technology can identify, at a small cell gateway, signaling traffic passing from an access network to a respective core network of an NHN operating at mid-band frequencies and add an interface between the small cell gateway of the NHN and a base station of a tenant network operating at low-band…

Systems and methods to address call failures in 5G networks due to QOS flow description

Granted: December 10, 2024
Patent Number: 12167289
Disclosed are systems, apparatuses, methods, and computer-readable media to address bearer loss during inter-radio access technology (RAT) handovers. A method includes sending a create bearer request for establishing a service for the mobile device using a first connection; receiving a create bearer response message to setup a second connection for the mobile device to continue the service; and, in response to the create bearer response message, sending an update bearer request message…

Enforcing differential policies on user traffic in a 5G/EPC environment with congestion avoidance and real time policy enforcement

Granted: December 10, 2024
Patent Number: 12167277
A method of configuring a user plane function node in, e.g., a fifth generation mobile core architecture to process user plane traffic without reliance on control messages over the Sx/N4 or Gx/N7 interfaces. The method includes detecting a type of user traffic at a user plane function node in, e.g., a fifth generation mobile core architecture, selecting, on the user plane function node and based on the type of user traffic, a rule to be applied to the user traffic, and activating the…

Optical waveguide passivation for moisture protection

Granted: December 10, 2024
Patent Number: 12164150
In part, in one aspect, the disclosure relates to a method for passivating a waveguide of an optical circuit. The method includes etching a suspended waveguide in the optical circuit; the suspended waveguide having a top surface, a bottom surface, and side surfaces; and covering the top surface and side surfaces of the suspended waveguide with a passivation coating having a thickness that ranges from between about 10 nm to about 20 nm. In one embodiment, the method further includes…

Telemetry over quic

Granted: December 10, 2024
Patent Number: 12166825
In one embodiment, an illustrative method herein may comprise: obtaining, by a device, one or more independent telemetry streams, wherein each of the one or more independent telemetry streams is uniquely identifiable by a span identifier; translating, by the device, each of the one or more independent telemetry streams into a corresponding QUIC protocol stream; mapping, by the device, the span identifier of each of the one or more independent telemetry streams to a respective stream…

Synergistic DNS security update

Granted: December 10, 2024
Patent Number: 12166772
Systems and methods provide for synergistic domain name system DNS security updates for an enterprise network operating under a Software Defined Wide Area Network (SD-WAN). A system may be configured to collect positive and/or negative unified threat defense (UTD) results, deploy a rules-based model that, when a threat or clearance is detected across several SD-WAN edge network devices, triggers an update to a local security blacklist/whitelist, wherein the update comprises a signature,…

Quasi-output queue behavior of a packet switching device achieved using virtual output queue ordering independently determined for each output queue

Granted: December 10, 2024
Patent Number: 12166696
In one embodiment, quasi-Output Queue behavior of a packet switching device is achieved using virtual output queue (VOQ) ordering independently determined for each particular output queue (OQ), including using maintained latency information of the VOQs of the particular OQ. In one embodiment, all packets from all VOQs with a same port-priority destination experience similar latency within specific time-window, which is similar to the packet service provided by an Output Queue switch…

Encrypted tunnel migration

Granted: December 10, 2024
Patent Number: 12166677
Techniques for load balancing encrypted traffic based on security parameter index (SPI) values of packet headers and sets of 5-tuple values of the packet headers are described herein. Additionally, techniques for including quality of service (QoS)-type information in SPI value fields of packet headers are also described herein. The QoS-type information may indicate a particular traffic class according to which the packet is to be handled. Further, techniques for pre-configuring a backend…

Efficient handling of fragmented packets in multi-node all-active clusters

Granted: December 10, 2024
Patent Number: 12166675
An efficient method to handle fragmented packets in multi-node all-active clusters. In one particular embodiment, a method includes receiving an initial fragment packet at a node in a cluster, creating a secondary flow table, linking the secondary flow table to a primary flow table, determining the primary flow owner of the initial fragment packet, and transmitting initial and succeeding fragment packets out of the cluster through, if possible, the primary flow owner.

Virtual meeting scheduling and monitoring based on sustainability attributes

Granted: December 10, 2024
Patent Number: 12166598
Devices, systems, methods, and processes for dynamically generating indications regarding the sustainability of one or more virtual meeting options is described herein. Virtual meetings can have participants join from all over the world and from very different computing devices which can each be powered by different power source types. When selecting a time for a virtual meeting between a number of participants, a large number of combinations may occur with each option having a different…

MUX and DEMUX circuits with improved bandwidth

Granted: December 10, 2024
Patent Number: 12166501
A combinational circuit (e.g., multiplexer or demultiplexer) comprises a sub-circuit that comprises first and second current paths from an input of the combinational circuit to an output of the combinational circuit, such that substantially all input current at the input of the combinational circuit is conducted by the sub-circuit via the first and second current paths to the output of the combinational circuit. The first current path comprises a first inductor and a first switch; and…

Dynamic configuration of a machine learning system

Granted: December 10, 2024
Patent Number: 12165390
Systems, methods, and computer-readable media are disclosed for dynamically adjusting a configuration of a pre-processor and/or a post-processor of a machine learning system. In one aspect, a machine learning system can receive raw data at a pre-processor where the pre-processor being configured to generate pre-processed data, train a machine learning model based on the pre-processed data to generate output data, process the output data at a post-processor to generate inference data, and…

Telemetry-based model driven manufacturing test methodology

Granted: December 10, 2024
Patent Number: 12164400
An approach is presented herein to use an in-situ algorithmic decision methodology during each stage of testing before 2C/4C to decide how long to test, how much margin should be used for each device under the test (DUT) to shorten or eliminate 2C/4C testing. Each DUT will be tested differently based on the risk level or the likelihood of failure at 2C/4C. To be able to achieve this, low-level hardware (HW) based sensors (on the printed circuit board assembly (PCBA), in power module, in…