Motorola Corporation

Freescale Semiconductor,inc.

The Mitre Corporation

Vijaykumar M Patel

Jheroen Pieter Dorenbosch

James Wade Marshall

Michael M Hoghooghi

Lyle G Saxton

Frank J Mammano

Howard H Ma

David J Chadwick

Chadwick David J

Food tray

A method in a communication network comprising a plurality of network controllers and a plurality of mobile nodes served by at least one of the plurality of network controllers is provided. The method includes the plurality of network controllers coordinating interference avoidance by co-operatively generating an interference avoidance database. The method further includes at least one of the plurality of network controllers updating the interference avoidance database, wherein updating the interference avoidance database includes receiving at least one interference avoidance related information from at least one of the plurality of mobile nodes. The method further includes the at least one of the plurality of network controllers communicating the updated interference avoidance database to at least one another of the plurality of network controllers

Dynamic frequency selection in wireless devices

A router () monitors () a data packet sent from an originator () via the router and addressed to a destination device () other than the router, and determines () whether the data packet is potentially harmful to the destination device. The router interrupts () transmission of the data packet in response to determining that the data packet is potentially harmful to the destination device, including communicating () with a second router to cause the second router to interrupt transmission of a future data packet; and transmits () the data packet in response to determining that the data packet is not potentially harmful to the destination device.

Method and apparatus for providing node security in a router of a packet network

A mobile wireless router ( ) includes a first wireless transceiver ( ) for accessing a wireless packet data channel ( ), and a network interface ( ) for coupling to a first network ( ). The mobile wireless router also includes a processor ( ) coupled to the first wireless transceiver and coupled to the network interface for controlling and communicating with the first wireless transceiver and the network interface. The processor is programmed to provide an internet protocol (IP) router function to terminal equipment (TE) ( ) coupled to the mobile wireless router through the first network, and is further programmed to appear, to another device ( ) in a second network ( ) coupled via the wireless packet data channel, to be an ordinary router.

Mobile wireless router

A communication system (100) is provided for transmitting data to mobile receivers utilizing a subcarrier within a commercial FM channel of a radio station (55). The data transmitted is first encoded in encoder (112), utilizing a forward error correction code. The sequence of the encoded data is altered in interleaver (116), subdivided into a plurality of subframes, in framing and synchronization circuit (120), which also adds channel state bits to each subframe. The framed data is modulated onto the subcarrier in the differential quadrature phased shift keying modulator (130), the output of which is coupled to the FM modulator (52) of radio station transmitter (50). The transmitted radio frequency signals may be received by a vehicle antenna (12) for coupling to the vehicle's FM receiver (80). The modulated subcarrier is recovered from the FM demodulator (84) of the receiver (80), the modulated subcarrier being demodulated to recover the encoded digital data therefrom. The channel state bits included with the data are extracted from the digital data and utilized to form a data reliability factor for each bit of the encoded data. The data reliability factors thus obtained are associated with each bit of the data in a deinterleaver (360). Deinterleaver (360) provides each data bit in proper sequence, with its associated data reliability factor to a decoder (370). The decoded digital data is provided to a vehicle traffic computer (90) for processing and presentation of traffic information to a user on a display (92).

Subcarrier communication system

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Fairfax Station, VA, United States of America

Vijaykumar M Patel