The present invention teaches a system and method for improved signal recovery for range and coverage extension in a heterogeneous cooperative network of digital chaos transmissions with OFDM component signal transmission. The invention improves upon the state of art in side channel information from the transmit side containing information on the clipped amplitude. In-band transmission of the side information is achieved by exploiting the sparsity of the resulting clip amplitude position with improved levels of compression over the prior art using Gabor Transform Multiple Symbol Encoding transmitter. The information rate of the clipped amplitude is sub-Nyquist relative to the original OFDM component signal transmission, which allows very low power spreading by a cooperative digital chaos sequences at a transmit side and recovery of the clipped amplitude at a receive side. Further, an improved noise resistance side channel performance is achieved by decoding Gabor Transform symbols for symbol recovery.

A communications node operable to communicate with another communications node over a communications channel having a plurality of frequency resources, the communications node includes data defining a division of the communications channel into a plurality of contiguous sub-bands each having N frequency resources, wherein each frequency resource in a sub-band has a corresponding frequency resource in each of the other sub-bands, data defining an initial allocation of the frequency resources, a resource determination module operable to apply a frequency shift to the initially allocated frequency resources in accordance with a frequency hopping sequence to determine frequency resources to use for communicating information with the other communications node, wherein the frequency shift applied moves the initially allocated frequency resources to corresponding frequency resources in another sub-band, a transceiver for communicating information with the other communications node using the determined frequency resource.

Methods and apparatuses for carrier selection are described. In one example, a method of carrier selection for a frequency-hopping wireless communication device includes using a fixed set of available carriers to hop over during communications. The method includes allocating a subset of the available carriers to a long-range carrier class. In one example, the subset of available carriers consists of at least two carrier clusters spaced widely in the frequency spectrum. The method further includes monitoring a transmit power level in the wireless communication device. The method further includes using the long-range carrier class to hop over during communications if the wireless communication device transmit power is greater than a predetermined level.

A communications node operable to communicate with another communications node over a communications channel having a plurality of frequency resources, the communications node includes data defining a division of the communications channel into a plurality of contiguous sub-bands each having N frequency resources, wherein each frequency resource in a sub-band has a corresponding frequency resource in each of the other sub-bands, data defining an initial allocation of the frequency resources, a resource determination module operable to apply a frequency shift to the initially allocated frequency resources in accordance with a frequency hopping sequence to determine frequency resources to use for communicating information with the other communications node, wherein the frequency shift applied moves the initially allocated frequency resources to corresponding frequency resources in another sub-band, a transceiver for communicating information with the other communications node using the determined frequency resource.

A user equipment (UE) tunes a transceiver of the UE to a first frequency associated with a first channel, transmits a first short packet to a second UE on the first channel and determines whether a first indication was received from the second UE in response to the first short packet. The first indication indicates that the first channel satisfies one or more predetermined criteria. The UE transmits then the primary data to the second UE on the first channel in response to the first indication being received from the second UE.

The present application relates to wireless communications suitable for smart manufacturing and industrial automation. In particular, the application proposes a wireless communication device (UE) and a network device (BS), in particular suitable for cyclic communication. The BS is configured to provide a first information defining a hopping sequence to a UE, and to provide a second information to the UE defining when the hopping sequence should be repeated, in particular periodically repeated. The UE is accordingly configured to receive the first information from the BS, and to receive the second information from the BS. The hopping sequence specifies at least two spatial resources and/or at least two radio resources, which the UE is configured to use for transmissions to and/or from the BS.

Various solutions for frequency hopping design for grant-free transmission with respect to user equipment and network apparatus in mobile communications are described. An apparatus may receive a frequency hopping pattern from a network node. The apparatus may determine a frequency hopping location according to the frequency hopping pattern. The apparatus may perform an uplink grant-free transmission according to the frequency hopping position. The frequency hopping pattern may comprise user equipment specific information.

Embodiments provide a transmission method of wireless transmission of data within a communication system (e.g. a sensor network or telemetry system). The system includes a step of transmitting the data while using at least two time hopping patterns and/or frequency hopping patterns, a second pattern of the at least two patterns being a time- and/or frequency-shifted version of a first pattern of the at least two patterns.

A radio analyzer includes a memory configured to store a first reference signal, and a processor coupled to the memory and configured to calculate a first correlation value between a received wave and a non-modulated wave, calculate a second correlation value between the received wave and the first reference signal in a target section of the received wave, the first correlation value being smaller than a first threshold value in the target section, and detect a modulated wave from the received wave based on the second correlation value.

A communications node operable to communicate with another communications node over a communications channel having a plurality of frequency resources, the communications node includes data defining a division of the communications channel into a plurality of contiguous sub-bands each having N frequency resources, wherein each frequency resource in a sub-band has a corresponding frequency resource in each of the other sub-bands, data defining an initial allocation of the frequency resources, a resource determination module operable to apply a frequency shift to the initially allocated frequency resources in accordance with a frequency hopping sequence to determine frequency resources to use for communicating information with the other communications node, wherein the frequency shift applied moves the initially allocated frequency resources to corresponding frequency resources in another sub-band, a transceiver for communicating information with the other communications node using the determined frequency resource.