Intel Corporation

Qualcomm Incorporated

Cpacket Networks Inc.

Mobilian Corporation

Ron Nevo

Michael Vakulenko

Ephraim Zehavi

Sergio Kolor

Shlomo Nizri

Atai Levy

Ran Ginosar

Xudong Zhao

Brett A Monello

Douglas Cooper

Dror Shindelman

Oren Haggai

Ilan Kessler

Theodore Hetke

Moshe Tanach

Tzahi Grunzweig

Enhraim Zehavi

Sheng Lundquist

Breet A Monello

A system has a firewall ingress node carrying network traffic. An attack injector creates a network attack flow on the firewall ingress node and thereby forms with the network traffic a composite firewall input signal on the firewall ingress node. A firewall egress node carries a response signal corresponding to the composite firewall input signal. A network monitor is connected to the firewall ingress node and the firewall egress node. The network monitor includes a homodyne detector to multiply the response signal by an oscillating driver signal to form a product that is integrated over time to form a homodyne detector response signal that is larger when the homodyne detector response signal has some component with the same frequency as the oscillating driver signal.

Network monitor with a homodyne detector for early identification of network attacks

A non-transitory computer readable storage medium has instructions executed by a processor to receive network session information from network monitoring devices distributed throughout an enterprise network. The network session information characterizes communications between a client device within the enterprise network and a server external to the enterprise network. The network session information is transformed into vectors of network communication session parameters. The vectors are combined into different time series of data. A similarity measure is computed between the different time series of data to detect unique sessions between the client device and a middlebox network device within the enterprise network or unique sessions between a middle box network device within the enterprise network and the server. The unique sessions are evaluated to infer relationships between networked devices within the enterprise network. A visualization of the relationships to characterize enterprise network topology is supplied.

Apparatus and method for passive detection of middleboxes within computer networks

In a mobile wireless telecommunications system, which includes base stations () of a first type operating over a first air interface, and base stations () of a second type operating over a second air interface, a method for reselection by a mobile station () camped on a cell associated with a first base station (), which is of the first type, of a second base station (), which is of the second type. The method includes receiving signals over the second air interface from the second base station () and evaluating a characteristic of the signals. Responsive to the characteristic, the second base station () is selected in place of the first base station (), and the mobile station () camps on a cell associated with the second base station ().

Idle mode handling in a hybrid GSM/CDMA network

In situations in which a given communication device may be a slave node on multiple communication sub-networks, a communication resource of the communication device may be allocated so as to serve the various sub-networks according to a device-centric control protocol.

Communication resource scheduling among multiple links

A multi-protocol wireless apparatus is provided with at least one wireless transceiver to transmit and receive signals in accordance with a first and a second protocol to and from first and second network devices of a first and a second wireless network communicatively coupled to the apparatus. The apparatus is further provided with at least one controller manager to operate the at least one wireless transceiver to perform the transmits and receives in accordance with the first and second protocols in a coordinated manner, taking into consideration quality of service criteria to be achieved for the respective protocols.

Multiple wireless communication protocol methods and apparatuses including quality of service considerations

A wireless communications device may reduce power consumption by determining that a received communications sequence is not addressed to the wireless communications device, determining how long the communications sequence will last, and placing its own receive circuitry into a low power state until the communications sequence has ended.

Receive-aware power saving in a wireless communications device

A wireless device is provided with a first wireless transceiver and a second wireless transceiver operative in a coordinated manner and coupled to at least one controller manager. The first wireless transceiver transmits and receives signals in accordance with a first protocol to and from a first network device of a first wireless network communicatively coupled to the apparatus, and the second wireless transceiver transmits and receives signals in accordance with a second protocol to and from a second network device of a second wireless network communicatively coupled to the apparatus. The wireless device is further provided with a network manager to coordinate the transmit and receive operations of the first wireless transceiver and said the second wireless transceiver in order to enable the wireless device to communicate contemporaneously with the first and second wireless networks. The network manager may be further configured to coordinate the first and second network devices of the first and second wireless networks. This coordination may include, for example, selection of network devices of either the first or the second network as dominant devices that operationally dominate network devices of the other network. The coordination further includes notifying at least one of the dominated devices, from time to time, to temporarily suspend signal transmission in order to proactively avoid frequency interference with the dominant devices.

Multiple wireless communication protocol methods and apparatuses

Techniques for supporting multiple potentially overlapping wireless protocols with a single electronic system are disclosed. In the description that follows, the overlapping protocols are Bluetooth and IEEE 802.11 for wireless networking; however, other overlapping protocols can be supported in a similar manner. A transaction control policy and a collision map are provided to determine which protocol to enable/disable when a conflict arises. Based on the transaction control policy and the collision map, one or more transceivers that operate according to the wireless protocols can be selectively enabled/disabled to avoid actual conflicts.

Multi-wireless network configurable behavior

A wireless device is provided with a wireless transceiver having a joint signal transmit/receive section, and a number of signal up/down conversion sections to transmit and receive signals wirelessly in accordance with a first and a second protocol. The wireless device is further provided with a controller/signal processing section to control and perform, in a coordinated manner, the transmit and receive operations in accordance with the two protocols. In various embodiments, the wireless device is further provided with a processor programmed to implement a time sharing schedule to facilitate the coordinated control and performance of the transmit and receive operations. In some of these embodiments, the processor is further programmed to monitor the transmit and receive workloads of the two protocols and adaptively perform the coordinated control and signal processing, based at least in part on the observed workloads. In various embodiments, the protocols may be selected pairs of Bluetooth, 802.11, 802.11, 802.11, Home RF and the like. The wireless device may also be used as a master device or a gateway device of two wireless networks.

Wireless apparatus having a transceiver equipped to support multiple wireless communication protocols

A wireless device is provided with a wireless transceiver to transmit and receive signals in accordance with a first protocol to and from network devices of a first wireless network, and a controller manager to control operation of the wireless transceiver. The wireless device is further provided with a wireless receiver to receive signals transmitted in accordance with a second protocol by network devices of a second wireless network, and the controller manager is equipped to control operation of the wireless transceiver based at least in part on at least one signaling characteristic of the received signals from network devices of the second wireless network, to reduce interference with proximately located ones of the network devices of the second wireless network. In various embodiments, the controller manager suspends operation of the wireless transceiver whenever interference is predicted. In other embodiments, the controller manager causes an appropriate filter to be applied whenever interference is predicted.

Wireless apparatus interference avoidance/resolution method and apparatuses

A collection of wirelessly networked devices including first devices wirelessly networked together using a first wireless protocol that is a frequency hopping protocol, and second devices wirelessly networked together using a second wireless protocol, are operated in a coordinated manner, including proactive reduction of interference between the networked devices. In one embodiment, the first devices include at least a first and a second subset operating with a first and a second frequency hopping pattern respectively. The proactive reduction effort includes synchronized operations of the first and second subsets of the first devices, and the second devices operate in a manner complementary to the synchronized operations of the first devices. In one embodiment, the collection of wirelessly networked devices includes at least one wireless device that operates in both wireless networks in accordance with both wireless protocols. The multi-protocol device is equipped to at least facilitate prospective anticipation of whether transmission of a long packet that spans multiple ones of successive frequencies by a device of the first wireless network will cause interference with devices of the second wireless network.

Multiple wireless communication protocol methods and apparatuses including proactive reduction of interference

In a GSM mobile wireless telecommunications system, a method for conveying signaling between a mobile station and a base station via a CDMA air interface includes generating a signaling message based on a GSM interface standard. Data link services are provided to process the message for transmission over the CDMA air interface, and the processed message is then transmitted over the CDMA air interface. Preferably, the data link services are provided by a data link layer, which produces an IS-95 message for transmission.

Signaling data link for a GSM-CDMA air interface

A wireless device is provided with at least one wireless transceiver and at least one controller manager to transmit and receive signals wirelessly to and from network devices of a first and second wireless network, in a coordinated manner, in accordance with a first and a second protocol respectively. The wireless device is further provided with a network manager to coordinate the network devices of the first and second wireless networks to reduce interference between the network devices of the two wireless networks. In various embodiments, the reduction is effectuated through proactive avoidance of interference with dominant devices by dominated devices, whenever an interference is predicted to occur. In other embodiments, the reduction is effectuated through corresponding application of appropriate filtering to correspondingly cancel the respective interfering signals, whenever an interference is predicted to occur.

Growing community of inventors

Hillsboro, OR, United States of America

Ron Nevo