Abstract: The present disclosure discloses a method and network device for improving location accuracy in multi-channel wireless networks. Specifically, to coordinate with other Access Points (APs) and improve location accuracy of client devices, each access point can (a) obtain a schedule of another neighboring AP; (b) switch to the operating channel of the neighboring AP at a scheduled time for communication exchanges between the neighboring AP and the client device, (c) listen to the communication exchanges between the neighboring AP and the client device; (d) collecting signal samples, e.g., signal strength associated with messages originated from the client device; and (e) send the report to the location engine to allow the location engine collect more signal samples associated with the client device, thereby more accurately determine the location of the client device; etc.

Abstract: The present disclosure discloses a system and method for detection network intrusion and activating a video surveillance system based on the network intrusion detection and processing video data accordingly. A network intrusion event caused by a particular device is detected. Responsive to responsive to detecting the network intrusion event, a current physical location of the particular device is estimated. Based on the current physical location, one or more predicted locations of the particular device are estimated. A video stream comprising images of the estimated one or more predicted locations of the particular device.

Abstract: The present disclosure discloses a method and network device for automatic delivery traffic indication message (DTIM) interval control for better mobile power save performance. The disclosed network device determines one or more characteristics for at least one client device connected to an Access Point (AP). The network device then dynamically selects a DTIM interval for the AP based on the characteristics for the at least one client device, and configures the AP to transmit a DTIM beacon frame at a frequency based on the dynamically selected DTIM interval. Alternatively, the network device can determine one or more characteristics for a client device, and dynamically select a Virtual Access Point (VAP) for providing network access to the client device based on the characteristics for the client device and a DTIM interval configured for the VAP, and then cause the client device to connect to the VAP.

Abstract: The present disclosure discloses a method and network device for adaptive management of wireless clients based on clients' radio behaviors and capabilities. Specifically, a disclosed network device can dynamically select a location tracking mechanism based on a probing characteristic of a client device. The disclosed network device can also dynamically selects a communication mechanism based on a power saving characteristics of a client device. Moreover, the disclosed network device can determine whether to select a new access point for a client device based on roaming characteristics of the client device. The adaptive management of client devices can be performed on a group of client devices with similar radio behaviors and/or capabilities on a per-radio rather than per-BSSID (basic service set identifier) basis.

Abstract: The present disclosure discloses a method and network device for maintaining captive portal user authentication. Specifically, the disclosed system determines an association status between a client and an access point in a wireless network, as well as whether to remove an entry corresponding to the client from a network layer (L3) cache based on the association status. If it is determined that the entry is to be removed, the disclosed system removes the entry corresponding to the client from the network layer (L3) cache. Note that, the association status can be determined based on one or more of an indication by a station management process at the network device, and a detection of radio link activities.

Abstract: A method directed to receiving, by a network device, client density data of a first access node in a plurality of access nodes in a network. Also, the network device receives client density data of a second access node in the plurality of access nodes. The network device determines whether the client density data of the first access node overlaps with the client density data of the second access node. In response to the received client density data of the first access node overlapping with the received client density data of the second access node, the network device identifies the first access node and the second access node as members of a virtual radio frequency (RF) neighborhood, wherein the virtual RF neighborhood comprises a subset of a RF neighborhood. Each member of the virtual RF neighborhood is capable of receiving beacons from other members of the virtual RF neighborhood.

Abstract: To facilitate management and configuration of VLAN memberships associated with applications or network protocols, a network device receives a packet from a wireless station which is a member of a virtual local area network (VLAN). The network device determines whether the packet is associated with a predefined application or network protocol. If so, the network device delivers the received packet to a dedicated VLAN which is accessible only to network devices associated with the predefined application or network protocol, regardless of destination address specified within the packet. If not, the network device delivers the received packet to an address or a group of addresses specified in a header of the received packet. In some embodiments, the VLAN is divided from a VLAN pool, and the dedicated VLAN corresponds to an address space that is outside the address space of the VLAN pool.

Abstract: Adapting scanning of frequency channels of different or varying widths to collect wideband spectrum data is disclosed. Scanning methods and/or configurations are modified based upon the type and signal strength of the interferers present or expected in the spectrum. The system includes: selecting a portion for scanning, wherein the portion includes contiguous and non-contiguous segments, partitioning the selected portion into a first plurality of channels, where at least two of the plurality of channels have different widths, each of the first plurality of channels including contiguous or non-contiguous segments; during a first scan of the selected portion, scanning the selected portion of the radio frequency spectrum at least by scanning a first channel with a first width and scanning a second channel with a second width that is different than the first width; and based on the first scan, collecting data representing the selected portion of the radio frequency spectrum.

Abstract: The present disclosure discloses a system and method for. classifying Wi-Fi signals from Fourier transform samples. Generally, classifying Wi-Fi signals from Fourier transform samples includes: collecting and dividing Fourier transform samples into frequency blocks; determining the bandwidth for the Fourier transform sample; and determining whether the Fourier transform sample corresponds to a narrowband signal. Further, if a determination is made that the Fourier transform sample does not correspond to a narrowband signal, channel utilization is calculated based on a determination that the FFT sample corresponds to a Wi-Fi signal. If it is determined that the Fourier transform sample corresponds to a narrowband signal, then a determination is made that the FFT sample corresponds to a Wi-Fi signal based on certain criteria. The certain criteria may include one or more of a slope value, a number of sub-peak bins, an analysis of adjacent channels, characteristic matching, or other criteria.

Abstract: The present disclosure discloses a system and method for classifying Wi-Fi signals from Fourier transform samples. Generally, classifying Wi-Fi signals from Fourier transform samples includes: collecting and dividing Fourier transform samples into frequency blocks; determining the bandwidth for the Fourier transform sample; and determining whether the Fourier transform sample corresponds to a narrowband signal. Further, if a determination is made that the Fourier transform sample does not correspond to a narrowband signal, channel utilization is calculated based on a determination that the FFT sample corresponds to a Wi-Fi signal. If it is determined that the Fourier transform sample corresponds to a narrowband signal, then a determination is made that the FFT sample corresponds to a Wi-Fi signal based on certain criteria. The certain criteria may include one or more of a slope value, a number of sub-peak bins, an analysis of adjacent channels, characteristic matching, or other criteria.

Abstract: The present disclosure discloses a system and method for enhanced dynamic multicast optimization based on network condition measurement. The system includes a processor and a memory storing instructions that, when executed, cause the system to: measure a network condition for a multicast group using one or more metrics; determine whether to convert all stations in the multicast group to unicast based on the network condition; and responsive to determining not to convert the all stations in the multicast group to unicast, determine, based on the network condition, a sub set of the multicast group for converting the subset of the multicast group to unicast, wherein the subset includes less than all stations in the multicast group.

Abstract: The present disclosure discloses a system and method for communicating with a distribution system via an uplink access point. The system includes a processor and a memory storing instructions that, when executed, cause the system to: receive, at a first network device, an original packet from a client device; identify a source MAC address of the original packet as a MAC address of the client device; identify an IP address of the original packet as an IP address of the client device; generate a modified packet from the original packet by changing the source MAC address from the MAC address of the client device to a MAC address of the first network device; preserve the IP address in the modified packet to be the IP address of the client device; and forward the modified packet from the first network device to a second network device.

Abstract: A method is described for dynamically assigning tasks to entities of different types within a network system based on preferences to perform the tasks on particular entities and/or network/device conditions. This ability to dynamically assign processing of tasks between disparate devices in a network system provides a more efficient network configuration and utilization of resources while not compromising throughput, overall network security, and/or network flexibility.

Abstract: The present disclosure discloses a system and method for monitoring link quality between internetworking devices. The system includes a processor and a memory storing instructions that, when executed, cause the system to: generate, at a first internetworking device, a marker-request packet that includes a current marker ID; send, from the first internetworking device, the marker-request packet to a second internetworking device; receive, at the first internetworking device, a marker-reply packet that responds to the marker-request packet from the second internetworking device, the marker-reply packet including the current marker ID and a previous marker ID; and determine, at the first network device, a link quality between the first internetworking device and the second internetworking device based at least in part on the marker-reply packet.

Abstract: Embodiments of the present disclosure relate to physical layer resource utilization in wireless local area networks. In particular, the present disclosure relates to a policy-based control mechanism for wireless network physical layer resources such as transmit beamforming. Specifically, the disclosed system receives a set of network policy criteria, and information associated with each of a plurality of client devices connected to a network device. The disclosed system then selects a subset of client devices in a wireless network based on the set of network policy criteria and information associated with each of the plurality of client devices. Furthermore, the disclosed system provides the subset of client devices for using one or more of wireless network physical layer resources. Here, the wireless network physical layer resources are limited to a threshold number of client devices. Moreover, the number of client devices in the subset does not exceed the threshold number.

Abstract: In general, in one aspect, embodiments relate to receiving, by a system of one or more network devices from a client device, a request to access one or more applications, determining, by the system, that the client device has already been authenticated to access a network, and based on determining that the client device has already been authenticated to access the network, causing authenticating of the client device for accessing the one or more applications.

Abstract: Disclosed herein is a system, apparatus, and method for optimizing sounding and feedback overhead in a wireless digital network utilizing a beamforming technique by adaptively changing the frequency of sounding transmissions.

Abstract: According to one embodiment of the disclosure, a non-transitory computer readable medium is described for an network device, where the medium comprising instructions which, when executed by one or more hardware processors, cause performance of a number of operations. These operations include configuring a first network device to provide network access to a client device using a first Basic Service Set Identification (BSSID) and determining that the first network device is not responsive. Based on determining that the first network device is not responsive, the one or more hardware processors further configure a second network device to provide the network access to the client device using the same first BSSID that was previously used by the first network device without the client device disassociating with the first BSSID.

Abstract: Disclosed is a system, apparatus, and method for RF management using network-device-to-network-device channel estimation and standard beamforming techniques. The exemplary method comprises: obtaining a first information corresponding to a first device that is a target device for transmitting at least one of a plurality of wireless signals by a network device; obtaining a second information corresponding to a second device that is to be avoided by propagation of any wireless signals transmitted by the network device; computing a radiation pattern for transmitting the plurality of wireless signals based at least on the first information associated with the first device and the second information associated with the second device; and transmitting the plurality of wireless signals based on the radiation pattern.

Abstract: A wireless network is adapted with a wireless network switch in communication with a plurality of access points, which are in communication with one or more stations. Specifically, a network device may receive a plurality of request messages on a plurality of wireless communication channels through a plurality of access points. The request messages are originated from a single station. Furthermore, the network can extract a plurality of channel identifiers from the request messages, and generates a filtered radio frequency neighborhood list dynamically based on the extracted channel identifiers.