A signal is transmitted at a high speed in a direction opposite to a transmitting direction of a main large-capacity channel. A first transmitting unit transmits a first signal including a clock component to an external device through a transmission path as a differential signal. A second transmitting unit superimposes a second signal including a clock component on the transmission path as an in-phase signal to transmit to the external device. A state notifying unit communicates with the external device through a pair of differential transmission paths included in the transmission path and notifies the external device of a connection state of its own device by a DC bias potential of at least one of the pair of differential transmission paths.

A radio frequency (RF) communications system may include an RF transmitter having multicarrier transmitter circuitry that transmits frequency bands over a frequency range. A controller may selectively transmit real information over at least one of the frequency bands and selectively transmits fake information within the frequency range. The controller's operation is based on embedded machine learning model and real-time effectiveness feedback from built-in spectral analyzer. An RF receiver receives the real information from the RF transmitter.

Physical layer structures and access schemes for use in such networks are described and in particular initial access channel (IACH) structures are proposed. A spectrum efficient downlink (DL) IACH design supports different types of User Equipment (UE) capabilities and different system bandwidths. An IACH includes the synchronization channel (SCH) and broadcast-control channel (BCH). A non-uniform SCH for all system bandwidths is provided, as well as scalable bandwidth BCH depending on system bandwidth. An initial access procedure is provided, as well as an access procedure.

Networks that support 5G communication may support different numerologies across and even within a symbol, slot, or subframe. Sequences, such as reference signals or data scrambled with a scrambling code, may be transmitted on resources with such mixed numerologies. In an aspect of the disclosure, a method, a computer-readable medium, and an apparatus are provided. The apparatus may be a user equipment. The UE may be configured to receive an indication of assigned resources for communicating with a base station. The UE may also be configured to determine a numerology associated with the assigned resources, and to determine one or more indices based on the numerology. The UE may also generate a sequence based on the one or more indices and communicate with the base station based on the sequence.

The technology disclosed relates to accelerating replay access to numerous streams via a channel aggregation hierarchy, muxing events from input buffers that receive event streams, into a physically aggregated stream in memory. A subscriber accesses events from the streams via the channel hierarchy; demuxing the physical aggregated stream and caching the events from the physical aggregated stream into event cache memory; caching references to selected events, which belong to active channels that have subscribers, in a caching structure including channel cache lists of the references, the caching structure including stream level channel cache lists, intermediate level channel cache lists, and, if the physical aggregate channel has subscribers, a physical aggregate channel cache list; and receiving a replay access request that specifies a channel and that specifies a starting point for the replay, and responsively delivering events from the event cache memory using a cache list corresponding to the specified channel.

Systems, methods, and apparatus are provided for automated identification of open space in a wireless communications spectrum, by identifying sources of signal emission in the spectrum by automatically detecting signals, analyzing signals, comparing signal data to historical and reference data, creating corresponding signal profiles, and determining information about the open space based upon the measured and analyzed data in near real-time.

A transmitter device, a receiver device and a transceiver device for a multicarrier modulation scheme. The transmitter device is configured to obtain a plurality of signature roots based on receiving a feedback message from a receiver device, construct a Lagrange matrix or a Vandermonde matrix from the plurality of signature roots, and generate a multicarrier modulated signal based on the Lagrange matrix or the Vandermonde matrix. The receiver device is configured to determine a plurality of signature roots, construct a Lagrange matrix or a Vandermonde matrix from the plurality of signature roots, and perform a demodulation of a multicarrier modulated signal based on the Lagrange matrix or the Vandermonde matrix. The transceiver device comprises a transmitter device configured to generate a multicarrier modulated signal, and a receiver device configured to perform a demodulation of the multicarrier modulated signal.

Embodiments of this application disclose a method and an apparatus for transmitting a DMRS, and relate to the field of communications technologies. The method and the apparatus are applicable to an NR system. The method for transmitting a DMRS may include: determining a time-frequency resource used to carry a DMRS; and then sending the DMRS by using the time-frequency resource.

A base station includes: a controller that performs control to transmit a plurality of signals that is common to each terminal to a terminal located in a coverage area of its own base station by transmitting the plurality of signals at the same timing while frequency multiplexing the plurality of signals on a frequency domain in an area where the signals can be transmitted simultaneously using a beam within the coverage area, and transmitting the plurality of signals a plurality of times while changing the area; and an antenna that transmits the plurality of signals area by area while changing a direction of the beam under the control of the controller.

A terminal device determines the time domain location, where the time domain location is a time domain location of the RSS of the neighbor cell in the timing of the neighbor cell; determines a first sequence parameter of the RSS of the neighbor cell; and measures the RSS of the neighbor cell based on the time domain location and the first sequence parameter of the RSS of the neighbor cell.