A method comprising determining that interference may occur in a wireless network an apparatus is connected to, obtaining a first link that is of a first type, obtaining a second link that is of a second type, determining data to be transmitted from the apparatus to another apparatus connected to the wireless network, determining that a transmission occurs in the first link and transmitting the data in the second link, wherein the transmission in the first link has a longer duration than transmitting the data in the second link and the transmission in the first link and transmitting the data in the second link overlap in time.

Methods, devices and systems that use a control channel to coordinate quality of data communications in software-defined heterogenous multi-hop ad hoc networks are described. In some embodiments, an example apparatus for wireless communication in a network includes performing, using a control plane, network management functions over a control channel that has a first bandwidth, implements a frequency-hopping operation, and operates at in a first frequency band, and performing, using a data plane that is physically and logically decoupled from the control plane, data forwarding functions, based on a routing decision, over at least one data channel that has a second bandwidth and operates in a second frequency band different from the first frequency band.

A method of detecting an operation to spoof a first positioning device carried by a first vehicle moving in a zone in which at least one second vehicle carrying a second positioning device is also moving, the method comprising the step of causing at least one first positioning value to be calculated for each vehicle from initial satellite signals received by each device; the method being characterized in that it further comprises the steps of: causing the second device to initiate a latching stage in order to make a new search for satellite signals and using the new satellite signals received by the second device to calculate a second positioning value for the second vehicle at the same instant as the first value; comparing the first and second values relating to the second vehicle; and issuing a warning when the two values do not coincide.

Methods, devices and systems that use a control channel to coordinate quality of data communications in software-defined heterogenous multi-hop ad hoc networks are described. In some embodiments, an example apparatus for wireless communication in a network includes performing, using a control plane, network management functions over a control channel that has a first bandwidth, implements a frequency-hopping operation, and operates at in a first frequency band, and performing, using a data plane that is physically and logically decoupled from the control plane, data forwarding functions, based on a routing decision, over at least one data channel that has a second bandwidth and operates in a second frequency band different from the first frequency band.

Systems and methods in which devices synchronize their clocks for purposes of data transmission are described. Particularly, the disclosed systems and methods provide detection and mitigation of interference by malicious (or non-malicious) wireless devices with communication of time synchronized data over wireless networks. Systems and methods are provided where times statistics related to multiple instances of wireless time synchronization are collected and collated. Devices in the system can discipline their internal clocks based on the collated time statistics.

A method for utilizing a jamming-resistant receiver (JrRx) device includes receiving, by a BJM engine, a plurality of individual subcarrier signals that comprises separate signal portions of a combined signal stream, wherein the combined signal stream is a combination formed by a source signal stream from a sender device and one or more interfering jamming signals from a plurality of unknown jammer devices and computing, by the BJM engine, a respective plurality of BJM filters for the plurality of individual subcarrier signals in the absence of channel information corresponding to the interfering jamming signals. The method further includes applying, by the BJM engine, the plurality of BJM filters to the respective plurality of individual subcarrier signals to decode data packets of the plurality of individual subcarrier signals in order to produce a plurality of source signal stream portions as decoded output, and recovering, by the BJM engine, the source signal stream by combining the decoded output from each of the plurality of BJM filters.

Methods, devices and systems that use a control channel to coordinate quality of data communications in software-defined heterogenous multi-hop ad hoc networks are described. In some embodiments, an example apparatus for wireless communication in a network includes performing, using a control plane, network management functions over a control channel that has a first bandwidth, implements a frequency-hopping operation, and operates at in a first frequency band, and performing, using a data plane that is physically and logically decoupled from the control plane, data forwarding functions, based on a routing decision, over at least one data channel that has a second bandwidth and operates in a second frequency band different from the first frequency band.

A method for locating a terrestrial transmitting source of an unknown signal that is transmitted via satellite to a terrestrial receiver, wherein the method includes comparing a power fluctuation of the unknown signal with a power fluctuation of at least one known signal allocated to a terrestrial transmitting source and determining a degree of similarity between the power fluctuation of the unknown signal and the power fluctuation of the at least one known signal.

A method for mitigating interference in a receiver, where the received signal is transmitted in a fashion having equivalent information content in at least two distinct bands. The method compares mean power per unit bandwidth in suitably normalised sidebands and sets a rejection threshold based upon the measured levels. Bands above the threshold may be rejected from further processing. The bands may include sidebands produced by a modulation process that produces sidebands having the same informational content. The threshold may be set relative to the band having the lowest mean power per unit bandwidth or according to some other function of the bands. Also extends to a signal processor in a receiver, and a receiver. The primary focus of the application is toward the Galileo Public Regulated Service (PRS) Satellite navigation signal.

Methods, devices and systems that use a control channel to coordinate quality of data communications in software-defined heterogenous multi-hop ad hoc networks are described. In some embodiments, an example apparatus for wireless communication in a network includes performing, using a control plane, network management functions over a control channel that has a first bandwidth, implements a frequency-hopping operation, and operates at in a first frequency band, and performing, using a data plane that is physically and logically decoupled from the control plane, data forwarding functions, based on a routing decision, over at least one data channel that has a second bandwidth and operates in a second frequency band different from the first frequency band.