Cisco Technology, Inc.

Greg Corsetto

David Stuart Kloper

Raghuram Rangarajan

Brian Donald Hart

Santosh Ghanshyam Pandey

Allen Huotari

John Martin Blosco

Sujai Hajela

James Friedmann

An access point (AP) includes a transceiver to service wireless client traffic on wireless channels within a channel bandwidth. The AP services wireless client traffic in a first channel bandwidth and sets a receiver bandwidth to include the first channel bandwidth and a second channel bandwidth initially not available for servicing wireless client traffic. Concurrent with servicing the wireless client traffic in the first channel bandwidth, the AP searches the second channel bandwidth for any interference signal. If no interference signal is found in the second channel bandwidth, the AP declares the second channel bandwidth free of interference.

Concurrent on-channel servicing of wireless client traffic and off-channel pre-scanning for radar in a wireless access point

Techniques are presented for detecting rogue wireless beacon devices. Wireless transmissions from beacon devices are received at a plurality of receiver devices. The wireless transmissions of the beacon devices comprise packets that carry information used for location-based services for mobile wireless devices. Content of one or more fields of the packets transmitted by the beacon devices and received by one or more of the receiver devices is obtained. The content of one or more fields of the packets is analyzed to detect an unauthorized beacon device. The analyzing operation may involve comparing the content of the one or more fields of the packets against a list that contains one or more identifiers for authorized beacon devices. In another form, analyzing may involve analyzing the content of the one or more fields of the packets with pattern information related to advertising content or advertising source.

Rogue wireless beacon device detection

Techniques are presented to reduce the number of antennas used for a transmission for a given antenna configuration and data rate. At a wireless communication device having a plurality of antennas and capable of sending a transmission via one or more of the plurality of antennas, a determination is made of a data rate and antenna configuration to be used for a transmission. A comparison is made between a total transmit power for a minimum number of antennas for the data rate to be used for the transmission and a total transmit power associated with the antenna configuration for the transmission. When the total transmit power for a minimum number of antennas for the data rate is greater than the total transmit power associated with the antenna configuration for the transmission, the transmission is sent with the minimum number of antennas.

Dynamically adjusting number of transmit antennas for MIMO systems to use greater transmit power

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Mountain View, CA, United States of America

Greg Corsetto