Aruba Networks Patent Grants

Enforcing station fairness with MU-MIMO deployments

Granted: February 21, 2017
Patent Number: 9577727
A non-transitory computer readable medium including instructions which, when executed by one or more hardware processors, causes performance of operations. The operations include: obtaining a first pathloss value for a first data transmitted between a first device and a second device; receiving, at a first component of the first device, a second data to be transmitted to the second device; based at least on the first pathloss value: selecting a first subset of the second data for…

Mitigating interference in wireless systems

Granted: February 21, 2017
Patent Number: 9577796
According to one embodiment of the invention, a non-transitory computer readable medium for configuring a noise floor of a network device based on the detection of a non-Wi-Fi signal is described. One embodiment of the non-transitory computer readable medium comprises instructions that detect a non-Wi-Fi signal, determine a noise floor based on at least one attribute of the non-Wi-Fi signal and configure the noise floor of the network device such that the network device receives signals…

Determining whether to use a local authentication server

Granted: February 21, 2017
Patent Number: 9578003
The present disclosure discloses a method and a system for determining whether to use a local authentication server. Specifically, a first network device executing a first authentication server receives a request for authentication from a client device. The first network device determines whether the client device was previously successfully authenticated by a second authentication server executing on a second network device within a particular period of time. If so, the first network…

Method and system for dynamic determination of potential access points for propagating client information

Granted: February 21, 2017
Patent Number: 9578487
A method includes determining a subset, of a set of access points, that a client device is likely to roam to from a first access point in the set of access points; transmitting to each of the subset of access points, without transmitting to a second access point in the set of access points that is not included in the subset, information associated with the client device; wherein the information associated with the client device is used by the client device or by the third access point…

Dynamic control of channel sounding for transmit beamforming

Granted: February 14, 2017
Patent Number: 9571249
The present disclosure discloses a system and method for dynamic control of channel sounding for transmit beamforming. Generally, sounding frames are periodically transmitted by a network device to a particular device at a first sounding interval. First feedback information is received from the particular device. The first feedback information corresponds to the sounding frames transmitted at the first sounding interval. Based on one or more current conditions included in the feedback…

Method and system for prioritizing network packets

Granted: February 14, 2017
Patent Number: 9571404
According to one embodiment, a system is described that comprises a network device adapted to receive a media stream including a plurality of network packets. The network device of the system processes the media stream, targeted for a client device communicatively coupled to the network device, by performing a number of operations. A first operation comprises partitioning the plurality of network packets into a plurality of subsets, each subset in the plurality of subsets corresponding…

Distributed radio management

Granted: February 7, 2017
Patent Number: 9565627
The present disclosure discloses a distributed radio management system that is capable of dynamically tuning a radio antenna to a particular radio frequency channel and/or radio frequency band. The disclosed network device includes a transceiver, an antenna, and a component on a wireless signal path between the transceiver and the antenna. The component includes functionality to dynamically switch between processing signals corresponding to a first radio frequency band and processing…

MU-MIMO implementation with configurable antenna system

Granted: January 24, 2017
Patent Number: 9553650
Disclosed herein is a system, apparatus, and method for using an antenna system comprising individually configurable antenna circuitries in a wireless network device to simulate the standard MU-MIMO transmissions as specified in the IEEE 802.11ac standard with antenna beamforming. The individually configurable antenna circuitries can be configured to transmit radio frequency (RF) signals with specific radiation patterns including directional beam patterns. Client devices may be grouped…

Method and system for synchronization of data streams

Granted: January 24, 2017
Patent Number: 9553906
A method includes: while streaming video frames on a network toward a client device, detecting a loss of connectivity between the network and the client device; responsive to detecting the loss of the connectivity between the network and the client device, ceasing the streaming of the video frames toward the client device; subsequent to detecting the loss of connectivity, determining that the connectivity between the network and the client device has been re-established; responsive to…

Spectrum-aware RF management and automatic conversion of access points to spectrum monitors and hybrid mode access points

Granted: January 17, 2017
Patent Number: 9549332
Methods of operating devices on a wireless network as access points (AP) or spectrum monitors (SM). An adaptive radio management (ARM) process operating on the digital network senses network conditions based on data from APs and SMs on the network, and in response to conditions changes devices from AP operation to SM operation, and from SM operation back to AP operation. A method for providing wideband spectrum analysis functions on a radio operating as an AP on a channel proving client…

Method and system for controlling access to shared devices

Granted: January 10, 2017
Patent Number: 9544331
A non-transitory computer readable medium includes computer readable program code including instructions for subsequent to a client device associating with an access point, receiving a request for a set of allowed shared devices, removing, by the access point and to obtain the set of allowed shared devices, a shared device from a set of shared devices based on a client device user of the client device failing to have a permission required by a device sharing policy of the shared device,…

Method and system for network service health check and load balancing

Granted: January 10, 2017
Patent Number: 9544332
A non-transitory computer readable medium includes instructions which, when executed by one or more network devices, causes performance of operations. The operations include sending, to shared devices, one or more status queries regarding one or more device conditions for each of the shared devices, obtaining responses to the one or more status queries from each of the plurality of shared devices, the responses including the one or more device conditions for each of the shared devices,…

Distributed method for client optimization

Granted: January 10, 2017
Patent Number: 9544840
The present disclosure discloses a distributed method and network device for providing client optimization in WLANs. Specifically, a first access point detects a plurality of client devices. The first access point also receives information identifying a first set of client devices associated with the second access point. Then first access point then identifies a subset of the detected plurality of client devices that are also identified in the first set of client devices associated with…

Authentication survivability for assigning role and VLAN based on cached radius attributes

Granted: December 27, 2016
Patent Number: 9531700
A system and method is described that allows the assignment of roles and/or VLANs to an authenticated client device even when an external remote authentication dial in user service (RADIUS) server is inaccessible. In particular, using RADIUS key-reply attributes stored locally after a previous successful authentication using the external RADIUS server, an internal RADIUS server may perform authentication and pass the stored RADIUS key-reply attributes to an authentication module for…

Method and system for aggregating WiFi signal data and non-WiFi signal data

Granted: December 13, 2016
Patent Number: 9521566
Methods of aggregating spectrum data captured from a narrowband radio to form a spectrum covering a much wider frequency band. Frequency data, such as FFT spectrum data captured from a narrowband receiver such as an IEEE 802.11 Wi-Fi receiver are combined to display representative real-time FFT, average FFT, and FFT duty cycle data of a wideband spectrum. Data is captured from narrow band radios such as access points, station monitors, or client devices on a wireless network. A wideband…

Provisioning devices for secure wireless local area networks

Granted: December 6, 2016
Patent Number: 9515824
Before establishing a connection between a first and a second devices, the first device determines whether a third device is a trusted or untrusted device. If it is a trusted device, the first device receives from the third device a public key and information indicating the public key of the second device; and, uses the public key by combining its own private key and the public key of the second device to generate a shared secret, and using the shared secret to communicate to the second…

Dynamic determination of transmission parameters based on packet priority and network conditions

Granted: December 6, 2016
Patent Number: 9515941
According to one embodiment, a non-transitory computer readable medium is described that comprises instructions which, when executed by one or more hardware processors, cause dynamic determination of one or more transmission parameters for transmitting a particular network packet of a plurality of network packets. The transmission parameters are determined based on (a) a classification associated with the particular network packet and (b) one or more current conditions. Subsequent to…

Device and method for split DNS communications

Granted: December 6, 2016
Patent Number: 9515988
Automatically configuring split DNS operation in a wireless network device connected to a network. The wireless network device snoops one or more exchanged DHCP messages to obtain domain name(s) associated with the organization that are now used as target domain name suffix(es) for split DNS operations. For subsequent DNS queries, information within the message is analyzed to determine if the request includes a domain delimiter. If no delimiter, the DNS query message is sent to an…

Location based access

Granted: December 6, 2016
Patent Number: 9516503
A non-transitory computer readable medium for location based access includes instructions which, when executed by one or more devices, causes performance of operations including identifying a physical location of a client device, determining that the physical location of the client device meets a criterion for allowing access through an entryway, identifying a permission level associated with the client device, determining that the permission level associated with the client device meets…

Dynamic use of RTS and/or CTS frames

Granted: December 6, 2016
Patent Number: 9516672
A method is described for intelligently toggling request-to-send/clear-to-send (RTS/CTS) mechanisms on and off for a channel between an access point and a client device. In particular, the method may determine one or more characteristics related to the transmission of frames and toggle RTS/CTS based on these characteristics. The characteristics may describe (1) the airtime used to transmit frames, (2) the data rate used to transmit frames, (3) traffic measurements on the wireless channel…