Aerohive Networks, Inc.

Juniper Networks, Inc.

Extreme Networks, Inc.

Wistron Neweb Corporation

Stellar Cyber, Inc.

Changming Liu

Jianlin Zeng

Sreekanth Reddy

Yong Kang

George Gang Chen

Liangfu Zhang

Chris Scheers

Peter Wu

Zhenye Cao

Huizhao Wang

Lin Chen

Xiaosong Yang

Hai Lin

Gregory M Lebovitz

Choung-Yaw Shieh

Matthew Stuart Gast

Jingsong Fu

Haofeng Kou

Arun K Goel

Yan Ke

Yonghui Cheng

William Hoppin

Purvi J Desai

Shang-Sian You

Mingliang Li

Yu Tao

Chi-Kang Su

Lee Chik Cheung

Joseph Fraher

Jun Tie

Yufeng Wu

Dalun Bao

Zhang Xu

Junjie Ma

Disclosed herein are apparatuses and a method for improving wireless communication characteristics by matching transmitter antenna patterns to receiver antenna patterns. An embodiment operates by generating a station profile for each of a plurality of stations based on a structure of each of the plurality of stations and an antenna pattern group of each of the plurality of stations. The embodiment then identifies a station profile of a first station from among the plurality of stations based on information received from the first station. Finally, the embodiment searches for an antenna pattern for the first station using the antenna pattern group corresponding to the station profile.

Antenna pattern matching and mounting

A technique for improving wireless communication characteristics involving matching transmitter antenna patterns to receiver antenna patterns. In a specific implementation, the transmitter antenna pattern adapts to changing parameters, such as when a smartphone is initially held in a first orientation and is later held in a second orientation. Because the transmitter antenna pattern matches receiver antenna patterns, signal quality between stations improves. In some implementations, antennas are organized and mounted to maximize spatial diversity to cause peak gains in different directions.

Minimum guaranteed wireless network bandwidth is provided to client network devices by monitoring the performance of network connections to identify client network devices experiencing network congestion. Congested network connections are then analyzed to determine the source of the network congestion. Depending upon the source of the network congestion, an embodiment of the invention may undertake steps to either improve the quality of the network connection or to mitigate the impact of this network connection on other network connections. High quality network connections may be allocated additional bandwidth, airtime, or other resources to reduce the network congestion. Low quality network connections are not allocated additional bandwidth, airtime, or other resources. Instead, the impact of this network connection on the other network connections is mitigated. Additionally, the low quality network connection may be transferred to another wireless networking device that may be able to provide a better quality network connection.

Bandwidth sentinel

A non-transitory computer-readable medium having a program stored thereon that, when executed by one or more processors, directs a computing system to secure a communication network. The program comprises a traffic inspection engine, a domain generation algorithm (DGA) inspection engine, and a message bus communicationally coupling the traffic inspection engine and the DGA inspection engine. The traffic inspection engine is configured to identify if a traffic session containing a domain name system (DNS) request and/or response in a communication network includes a DGA generated domain and send information about the identified DGA generated domain to the DGA inspection engine via the message bus. The DGA inspection engine is configured to verify if the identified DGA generated domain is registered, and send information about the registered DGA domain to the traffic inspection engine via the message bus. The traffic inspection engine is further configured to inspect, using the information about the registered DGA generated domain, if a subsequent traffic session in the communication network contains the registered DGA generated domain.

Timely detection of network traffic to registered DGA generated domains

Wireless networking devices scan for available channels and gather data about the channels and the RF environment. Using this information, each wireless networking device determines a cost value for each available channel and a quality value for its overall RF neighborhood. Each wireless networking device select the channel with the best cost value as a candidate channel for use. The wireless networking devices may submit channel requests to the arbiter for approval. If two or more wireless networking devices are requesting the same channel, the arbiter assigns the channel to the wireless networking device with the worst RF neighborhood quality. The arbiter informs the wireless networking devices if their channel requests are approved. If a wireless networking device's channel request is not approved, the wireless networking device will rescan the remaining available channels to select a different candidate channel to be approved.

Distributed channel selection for wireless networks

Preshared keys are assigned to client devices, users, or user groups. The set of valid preshared keys or keys derived therefrom is distributed to network devices such as wireless access points. A client device attempts to establish a secure network connection with a network device using its assigned preshared key. A network device identifies the client device's preshared key by selecting a candidate key from its set of valid preshared keys. The network device determines a validation cryptographic checksum based on the selected candidate key. If the validation cryptographic checksum matches the client's cryptographic checksum, the network device establishes a secure network connection with the client device using this candidate key. If the validation cryptographic checksum does not match the cryptographic checksum provided by the client device, the network device repeats this comparison using different candidate keys selected from its set of valid preshared keys until a match is found.

Exclusive preshared key authentication

A technique for deploying proximity beacons involves coupling proximity beacon transmitters and/or hubs to an enterprise network device. The coupling can be by way of physically connecting communication interfaces of the network device and the proximity beacon transmitter or hub. In some implementations, the communication interface can be implemented as a USB interface. In some implementations, the communication interface can be embedded within the network device, such that the communication interface can provide the physical connection in the form of an embedded or internal connection.

Deployment of proximity beacon drives

Wireless access points detect neighboring wireless access points in different subnets. Upon connecting with a wireless client, a wireless access point determines predictive roaming information for the wireless client. Predictive roaming information identifies the wireless client; its home network subnet; and includes connection information associated with the wireless client. The wireless access point forwards the predictive roaming information associated with a wireless client to neighboring wireless access points while the wireless client is still connected with the wireless access point. Neighboring wireless access points store received predictive roaming information. Upon connecting with a wireless client, a neighboring wireless access point determines if the wireless client matches the stored predictive roaming information. If so, the neighboring wireless access point uses the predictive roaming information to quickly connect with the wireless client and to establish a tunnel to redirect network traffic associated with the wireless client through to its home subnet.

Predictive and nomadic roaming of wireless clients across different network subnets

A method and system for selecting a route in a wireless network for the transmission of a data packet between wireless nodes in the network using a modified link-state routing algorithm. A subset of nodes called portal nodes within the network are elected to do the broadcasting for the entire network. A wireless node identifies a unicast route back to its root portal node, and sends a link-state register message to this portal node. These link-state register messages received by each portal node are aggregated by them and are broadcast to each of the wireless nodes for storage. When a data packet is thereafter received by a wireless node from a neighboring node, it detects if the data packet satisfies one of a plurality of predetermined conditions and rebroadcasts the data packet to neighboring wireless nodes if none of the conditions is satisfied.

Routing method and system for a wireless network

Airtime usage may be used as a factor in controlling network traffic flow to and from client devices via a wireless network interface. Received packets or other data are assigned to a quality of service profile. Additionally, a cost value for communicating the received data is determined at least in part based on an actual or estimated airtime usage for the received packet. The cost value is used to allocate wireless network airtime to data. The allocation of wireless network airtime may be varied dynamically based on operating conditions. The cost value may be based on factors including the airtime used to communicate data; whether the data is a retransmission; and wireless network overhead. The cost value of data may also be different depending on whether the data is being sent from a client device or to a client device.

Airtime-based packet scheduling for wireless networks

Techniques for managing IoT devices through multi-protocol infrastructure network devices are disclosed. A system utilizing such techniques can include a multi-protocol infrastructure network device and a WAN based IoT device management system and various network device based engines. A method utilizing such techniques can include management according to WAN based IoT device policies and LAN based IoT device policies.

IoT device management using multi-protocol infrastructure network devices

A network device comprising, a first radio module configured to transmit and receive first radio signals in a first frequency band, a first antenna array configured to transmit and receive the first radio signals for the first radio module in the first frequency band, a second radio module configured to transmit and receive second radio signals in the first frequency band, a second antenna array configured to transmit and receive the second radio signals for the second radio module in the first frequency band, wherein, in operation, the first radio module and the second radio modules function concurrently using the first frequency band while at least 40 dB of antenna isolation is maintained between the first antenna array and the second antenna array.

Single band dual concurrent network device

A network device of a subnet determines predictive roaming information for a wireless client. Predictive roaming information can identify the wireless client and a home network subnet of the wireless client. The network device provides predictive roaming information associated with a wireless client to neighboring subnets. Neighboring subnets store received predictive roaming information, and use the predictive roaming information if the wireless client roams to them.

Predictive roaming between subnets

A proximity beacon signal transmitted by a network device-coupled proximity beacon transmitter is received at a network device. A RSSI reporting message is generated at the network device based on the proximity beacon signal. A position of the network device-coupled proximity beacon transmitter with respect to the network device is determined using the RSSI reporting message. A location of the network device within a region is determined using the RSSI reporting message and network device map data for the region. The location of the network device-coupled proximity beacon transmitter in the region is determined based on the position of the network device-coupled proximity beacon transmitter with respect to the network device and the location of the network device within the region.

Growing community of inventors

Cupertino, CA, United States of America

Changming Liu