34 results about "Time domain multiplexing" patented technology

The invention discloses a hospital internal network security isolation method based on an all-optical network architecture. The method comprises the following steps: S1, dividing a hospital internal network into a plurality of virtual optical slices by using an all-optical network slicing technology; s2, performing time domain isolation by using an optical time domain multiplexing technology, and transmitting data on different optical wavelengths by using a wavelength selective switching technology; s3, monitoring and managing bandwidth allocation through a software defined network control platform; s4, traffic prediction and resource optimization are carried out based on a decision tree integration algorithm; s5, detecting potential anomalies and security threats by using the graph neural network; s6, abnormal behaviors are detected through an isolation forest algorithm, and abnormal traffic is marked and isolated; s7, recording a network traffic log through a block chain technology; and S8, when a network fault occurs, using an intelligent self-healing mechanism to automatically switch redundant optical path resources and recover the optical path. According to the invention, all-optical network slicing and artificial intelligence technologies are fully utilized, and security isolation and resource optimization of a hospital internal network are realized.

A hybrid time domain multiplexing (TDM) and frequency domain multiplexing (FDM) configuration protocol for a doppler-based ultrasound fetal monitoring system (FMS) is provided. In an example, a FMS determines context information regarding an operating context of the FMS, the context information comprising a number of fetal sensor devices (FSDs) activated for monitoring a corresponding number of fetuses of a single mother, wherein the FSDs respectively comprise ultrasound transducers configured to measure fetal parameters of a single fetus, and wherein each of the FSDs are configurable to operate using either the FDM mode or the TDM mode. The FMS further configures respective operating modes (i.e., FDM mode or TDM mode) of the FSDs based on the context information and in accordance with a configuration protocol that varies the respective operating modes (i.e., FDM mode or TDM mode) of the FSDs under different operating contexts of the FMS.

Apparatuses, methods, and systems are disclosed for performing channel occupancy time sensing. One method includes receiving information configuring a single channel occupancy time for multi-beam transmission in an unlicensed channel. The method includes performing sensing for the single channel occupancy time. The sensing includes: omni-directional sensing at a beginning of the single channel occupancy time; directional sensing on a plurality of beams at the beginning of the single channel occupancy time; directional sensing on the plurality of beams in a time domain multiplexing manner before each transmission based on a time gap between transmissions; or some combination thereof.

An audio authentication and identity verification system and method that encodes dynamic cryptographic information across the audible and inaudible spectrum (0 Hz→30 kHz, scalable to 124 kHz). A rolling acoustic signature simultaneously embeds identity, time, date, and GPS location using a hybrid of frequency shift keying (FSK), phase shift keying (PSK), Morse style pulse duration modulation, and time domain multiplexing. To guarantee post-event privacy and integrity, the system further incorporates a dual custody audio architecture in which every authenticated recording is split into complementary bit interleaved segments stored separately, and the decryption key is fragmented via Shamir 3-of-5 secret sharing—preventing unilateral access or tampering. The system establishes a tamper proof, real time, and offline capable authentication layer that functions in air, through conventional microphones, and via dedicated emitter hardware.

A system for transmission of primary and secondary data, the system comprising: a bus; a parent node coupled to the bus; and a plurality of child nodes, each coupled to the bus, wherein: the parent node is configured to periodically transmit a time domain multiplexing (TDM) cycle beacon to the bus, wherein the TDM cycle beacon signals a start of a primary data transmission interval, and wherein the primary data transmission interval is a period reserved for transmission of primary data by the parent node and the plurality of child nodes; the parent node and each of the plurality of child nodes are operable to, responsive to the TDM cycle beacon, transmit primary data for a current TDM beacon period associated with the TDM cycle beacon to the bus during the primary data transmission interval; and the parent node and the plurality of child nodes are operable to transmit secondary data to the bus during a secondary data transmission interval between an end of the primary transmission interval and transmission by the parent node of a next TDM cycle beacon.

Apparatuses, methods, and systems are disclosed for performing channel occupancy time sensing. One method includes receiving information configuring a single channel occupancy time for multi-beam transmission in an unlicensed channel. The method includes performing sensing for the single channel occupancy time. The sensing includes: omni-directional sensing at a beginning of the single channel occupancy time; directional sensing on a plurality of beams at the beginning of the single channel occupancy time; directional sensing on the plurality of beams in a time domain multiplexing manner before each transmission based on a time gap between transmissions; or some combination thereof.

A device comprises a control circuit configured to control a plurality of quantum bits. The control circuit comprises a digital-to-analog converter circuit and switching circuitry coupled to an output of the digital-to-analog converter circuit. The switching circuitry is responsive to switch control signals to selectively connect the output of the digital-to-analog converter circuit to one or more of a plurality of signal paths to generate control signals to control the plurality of quantum bits.

Embodiments described herein relate to methods and apparatus for transmitting radio data over a fronthaul network. The method comprises receiving radio data for transmission over the fronthaul network; and translating the radio data between a time domain multiplexing protocol and packet based protocol before transmitting the data over the fronthaul network; wherein the step of translating comprises: receiving control information indicative of a level of congestion over a part of the radio network using the packet based protocol; and modifying the radio data during the step of translating to control the level of congestion.

This application discusses systems and methods for synchronization signal block (SSB) to random access channel (RACH) occasion (RO) association to enable use of physical random access channel (PRACH) repetition. A network (e.g., a radio access network (RAN)) may provide RACH configuration information to a user equipment (UE) that enables the UE to identify a set of configured ROs. In some cases, the UE uses an RO group that includes a plurality of time domain multiplexed (TDM) ROs that are used for PRACH repetition of one or more random access procedures for a corresponding SSB. The UE may use the RACH configuration information to determine a mapping of the RO groups to the configured RO, determine a repetition level for each of the RO groups, identify a correspondence between an SSB of an RO group and the repetition level of the RO group, and the like. Other embodiments that do not use a formal RO group are also described.

An optical time domain multiplexing system and method of driving a time division multiplexed light field display to output a multiplexed light field image. The time domain multiplexing device for use in light field display comprises a series of optical components to manipulate the polarization of light, resulting in independent time states to create a multiplexed light field display.

A lithographic apparatus (100) includes a projection system and an inspection apparatus (400). The projection system projects an image of structures of a patterning device onto a substrate (420). The inspection apparatus (400) includes a photodetector (426), a demultiplexer (428), and an illuminator section with a multiplexer (506). The illuminator section directs a beam of illumination toward a target on the substrate. The multiplexer (506) transmits first and second portions of the beam via first and second pulses (510', 512', 514'), respectively. The first portion has a first illumination parameter and the second portion has a second illumination parameter. The multiplexer (506) interleaves, in time, the first and second pulses (5101, 512', 514'). The photodetector (426) receives pulses of scattered illumination from the target to generate a measurement signal based on the pulses of the scattered illumination. The demultiplexer (428) analyses the measurement signal to discriminate portions of the measurement signal according to illumination parameter based on timing of the pulses of the scattered illumination.

Various aspects of the present disclosure generally relate to wireless communication. In some aspects, an apparatus may transmit, to a tag device on a forward link, a first communication that includes a preamble sequence, control information in a control channel, and data in a data channel, where the preamble sequence, the control channel, and the data channel are time domain multiplexed. The apparatus may receive, from the tag device on a backward link, a second communication that is in response to the first communication. Numerous other aspects are described.

A physical random access channel transmitting method and apparatus, the method including: a terminal equipment transmits a second number of PRACHs on a first number of valid ROs, the first number of valid ROs being time-domain multiplexed, or the first number of valid ROs being frequency-domain multiplexed, or the first number of valid ROs being time-domain and frequency-domain multiplexed, and the first number and the second number being positive integers greater than or equal to 2.

A communications network for a vehicle comprising: a central processing node; a zonal node; an Ethernet network coupling the central processing node to the zonal node; and an edge network coupled to the zonal node, the edge network comprising a time domain multiplexing (TDM) bus and a plurality of edge transducers coupled to the TDM bus, wherein the zonal node comprises a network bridge for bridging transducer data received from the TDM bus to the Ethernet backbone network, wherein the network bridge comprises: interface circuitry for interfacing the network bridge with the TDM bus; clock recovery circuitry for recovering a clock signal for use by the edge network from an Ethernet frame received from the Ethernet network, wherein a TDM cycle of the TDM bus is synchronised to the recovered clock signal; acoustic data receiver circuitry coupled to the interface circuitry by a first low-latency data path, wherein the acoustic data receiver circuitry is configured to transmit acoustic data contained in Ethernet frames received at the network bridge from the Ethernet network to the interface circuitry; and acoustic data transmitter circuitry coupled to the interface circuitry by a second low-latency data path, wherein the acoustic data transmitter circuitry is configured to transmit Ethernet frames containing acoustic data received at the interface circuitry from the edge network to the Ethernet network.

Various aspects of this disclosure relate generally to wireless communication. In some aspects, a user equipment (UE) may use a low peak-to-average power ratio (PAPR) sequence generator to determine one or more demodulation reference signal (DMRS) scrambling sequences, each of the one or more DMRS scrambling sequences corresponding to a corresponding port among one or more ports associated with downlink multiple-input multiple-output (MIMO) communication, wherein the downlink MIMO communication is based on Discrete Fourier Transform Extended Orthogonal Frequency Division Multiplexing (DFT-s-OFDM). The UE may receive the downlink MIMO communication including DMRS according to an in-slot DMRS mode indicating one or more time-domain multiplexed symbols, each of the one or more time-domain multiplexed symbols being at least partially assigned at least one of the one or more DMRS scrambling sequences. Numerous other aspects are described.

A system for transmission of primary and secondary data, the system comprising: a bus; a parent node coupled to the bus; and a plurality of child nodes, each coupled to the bus, wherein: the parent node is configured to periodically transmit a time domain multiplexing (TDM) cycle beacon to the bus, wherein the TDM cycle beacon signals a start of a primary data transmission interval, and wherein the primary data transmission interval is a period reserved for transmission of primary data by the parent node and the plurality of child nodes; the parent node and each of the plurality of child nodes are operable to, responsive to the TDM cycle beacon, transmit primary data for a current TDM beacon period associated with the TDM cycle beacon to the bus during the primary data transmission interval; and the parent node and the plurality of child nodes are operable to transmit secondary data to the bus during a secondary data transmission interval between an end of the primary transmission interval and transmission by the parent node of a next TDM cycle beacon.

A method and apparatus for transmitting a physical random access channel are provided. The method includes a terminal device transmitting a second quantity of PRACH with a first quantity of active RO, wherein the first quantity of active RO is time-domain multiplexed, or the first quantity of active RO is frequency-domain multiplexed, or the first quantity of active RO is time-domain and frequency-domain multiplexed, and the first quantity and the second quantity are positive integers of 2 or more.

The invention relates to the technical field of digital imaging, in particular to a single-photon camera structure. Comprising a lens module, a superconducting detector module, a data processing module, a reading module, a gating module, a storage module, a main control end, an array unit, a time domain multiplexing unit and a reading frame unit. According to the present invention, a plurality of pixels are used to determine which pixel emits a signal, thereby reducing the need for readout lines, while enabling measurement of signals from the whole row or column of pixels at a time, rather than recording of data of each individual pixel, thereby greatly reducing the number of readout lines, and improving imaging quality and data processing efficiency through an algorithm.

Embodiments provided herein generally include apparatus, plasma processing systems, and methods for generating a waveform for plasma processing a substrate in a processing chamber. One embodiment includes a waveform generator having voltage source circuitry, a first switch coupled between the voltage source circuitry and a first output node of the waveform generator, the first output node configured to be coupled to a chamber, and a second switch coupled between the first output node and an electrical ground node. The waveform generator also includes a third switch coupled between the voltage source circuitry and a second output node of the waveform generator, the second output node configured to be coupled to the chamber, and a fourth switch coupled between the second output node and the electrical ground node.

This application discusses systems and methods for synchronization signal block (SSB) to random access channel (RACH) occasion (RO) association to enable use of physical random access channel (PRACH) repetition. A network (e.g., a radio access network (RAN)) may provide RACH configuration information to a user equipment (UE) that enables the UE to identify a set of configured ROs. In some cases, the UE uses an RO group that includes a plurality of time domain multiplexed (TDM) ROs that are used for PRACH repetition of one or more random access procedures for a corresponding SSB. The UE may use the RACH configuration information to determine a mapping of the RO groups to the configured RO, determine a repetition level for each of the RO groups, identify a correspondence between an SSB of an RO group and the repetition level of the RO group, and the like. Other embodiments that do not use a formal RO group are also described.

This invention is a technique for coordinate multi-point wireless transmission between a plurality of geographically separated transmission points (TP) and at least one user equipment (UE).For coordinated multi-point communication (CoMP), UE measures the downlink wireless propagation channel corresponding to multiple geographically separated transmission points. The network configures multiple channel state indicator-reference signal (CSI-RS) resources, each of which is associated with a TP. UE measures the downlink channel using the multiple configured CSI-RS resources, and reports multiple CSIs in the uplink feedback channel. Each CSI report is defined as a “CSI-process”, where a CSI-process with a lower CSI-process-index has a higher priority. Multiple CSI-processes can be reported periodically. Each periodic CSI feedback comprises a single CSI-process. Different CSI-processes are time-domain-multiplexed on different uplink feedback time instances, and are not multiplexed in the same feedback time instance. If two CSI-processes collide in the time domain, the CSI-process of a higher priority is reported, and the CSI-process of a lower priority is dropped. The UE can also feedback multiple CSI-processes in an aperiodic manner, where multiple CSI-processes are reported simultaneously. Aperiodic feedback by the UE is triggered by an n-bit CSI-triggering field in an uplink grant transmitted by the network. Each codepoint of the n-bit triggering field triggers feedback of a subset of CSI-processes configured by the higher-layer. If a UE is configured with CoMP and without carrier aggregation (CA), CSI-processes are ordered by decreasing CSI-process priority. If a UE is configured with CoMP and carrier aggregation simultaneously, CSI-processes are ordered firstly by decreasing carrier index, and secondly by decreasing CSI-process priority.

Aspects of the present disclosure describe systems and methods that advantageously enable vibration-induced optical phase measurement at a centralized optical line terminal (OLT) in a PON architecture. In sharp contrast to existing distributed fiber sensing systems and methods, the optical phase measurements of the present disclosure do not rely on back scattering mechanisms and maintain a sufficient optical signal to noise ratio (OSNR) even after round-trip splitting loss in the PON.

A physical random access channel transmission method and apparatus, the method comprising: a terminal device sends a second number of PRACHs on a first number of ROs, the first number of ROs being time-domain multiplexed, or the first number of ROs being frequency-domain multiplexed, or the first number of ROs being time-domain and frequency-domain multiplexed, the first number of ROs being time-domain and frequency-domain multiplexed, or the first number of ROs being time-domain and frequency-domain multiplexed; the first number and the second number are positive integers greater than or equal to 2.

The invention relates to a time domain multiplexing method and device, communication equipment and a computer readable storage medium. The method comprises the following steps: determining a first energy supply window width of a wireless frame corresponding to a backscattering cell in a backscattering cell cluster; according to the first energy supply window width, determining a time domain overlapping width between wireless frames corresponding to adjacent backscattering cells; and performing time domain multiplexing on the backscattering cells in the backscattering cell cluster according to the time domain overlapping width. By adopting the method, the time domain resource utilization rate of the environment backscattering system can be improved.

An optical time domain multiplexing system and method of driving a time division multiplexed light field display to output a multiplexed light field image. The time domain multiplexing device for use in light field display comprises a series of optical components to manipulate the polarization of light, resulting in independent time states to create a multiplexed light field display.

The application discloses a kind of certainty wireless communication method, system and device based on active resource planning, belong to 6G mobile communication field.The application utilizes the global predictability of network side running all user equipment protocol safety state machine (PSSM) under dynamic security foundation (DSF) framework, accurately obtains the logical decision time sequence of each service flow in future planning window, directly allocates deterministic time-frequency resource for each logical decision time by resource allocation algorithm, generates resource use time table and issues to user equipment.User equipment transmits and receives according to table in planning window, without real-time signaling interaction.The application also provides three kinds of implementation modes of explicit planning, implicit planning (derived by planning key) and temporary planning (switching dedicated), and works cooperatively through resource pool division and mapping table version control and two-step arbitration.Resource use time table allows multiple user equipment to share the same physical resource at different logical times through time domain multiplexing, fundamentally eliminates resource collision, realizes zero signaling, zero queuing, sub-millisecond switching interruption deterministic communication, provides complete deterministic scheduling system from "security bottom" to "extreme performance" for 6G network.

Aspects of the present disclosure generally relate to wireless communications. In some aspects, a user equipment (UE) may determine one or more demodulation reference signal (DMRS) scrambling sequences using a low peak-to-average power ratio (PAPR) sequence generator, each of the one or more demodulation reference signal (DMRS) scrambling sequences corresponding to a respective port of one or more ports, the one or more ports are associated with downlink multiple-input multiple-output (MIMO) communications, wherein the downlink MIMO communications are based on Discrete Fourier Transform Expansion Orthogonal Frequency Division Multiplexing (DFT-s-OFDM) communications. The UE may receive the downlink MIMO communication comprising a DMRS according to an intra-slot DMRS pattern, the intra-slot DMRS pattern indicating one or more time domain multiplexed symbols, each of the one or more time domain multiplexed symbols being at least partially allocated with at least one of the one or more DMRS scrambling code sequences. Numerous other aspects are described.

The invention discloses a financial community identification method, device, equipment and program product, and the method comprises the steps: obtaining transaction data, constructing a transaction network diagram based on the transaction data, determining an adjacent matrix of the transaction network diagram to obtain a quantum state code, carrying out the Gaussian glass color sampling of the quantum state code based on a time domain multiplexing photon quantum circuit, and obtaining a quantum state code; the sub-graph forming probability corresponding to each node in the transaction network graph is obtained, and the time domain multiplexing photon quantum circuit comprises a space interferometer layer and a time delay circulation layer. And determining the financial community based on the probability of each node. In the invention, the space interferometer layer can expand the number of effective optical modes, and a large number of beam splitters and phase modulators are not needed, so that the hardware complexity is reduced. Through the time delay cycle layer, all optical modes are detected, the number of detectors is reduced, and the hardware cost is reduced. Based on the parallelism of quantum sampling, the time complexity of financial community identification is reduced, and the real-time performance is ensured.

A system for transmitting primary and secondary data, the system comprising: a bus; a parent node coupled to the bus; and a plurality of child nodes each coupled to the bus, wherein: the parent node is configured to periodically transmit a time-domain multiplexing (TDM) periodic beacon to the bus, wherein the TDM periodic beacon signals the start of a primary data transmission interval, and wherein the primary data transmission interval is a period reserved for the transmission of primary data by the parent node and the plurality of child nodes; each of the parent node and the plurality of child nodes is operable to transmit primary data of a current TDM beacon period associated with the TDM periodic beacon to the bus during the primary data transmission interval in response to the TDM periodic beacon; and the parent node and the plurality of child nodes are operable to transmit secondary data to the bus during a secondary data transmission interval between the end of the primary transmission interval and the transmission of the next TDM periodic beacon by the parent node.

The invention relates to a hybrid time domain multiplexing and frequency domain multiplexing configuration for an ultrasound fetal heart rate monitoring system. A hybrid time domain multiplexing (TDM) and frequency domain multiplexing (FDM) configuration protocol for a Doppler-based ultrasound fetal monitoring system (FMS) is provided. In an example, an FMS determines contextual information about an operational context of the FMS, the contextual information including a number of fetal sensor devices (FSDs) activated to monitor a corresponding number of fetuses of a single mother, where the FSDs each include an ultrasound transducer configured to measure a fetal parameter of the single fetus, and the ultrasound transducer is configured to transmit the measured fetal parameter to the FMS. And wherein each of the FSDs may be configured to operate using an FDM mode or a TDM mode. The FMS also configures a respective operating mode (i.e., FDM mode or TDM mode) of the FSD based on the context information and according to a configuration protocol that changes the respective operating mode (i.e., FDM mode or TDM mode) of the FSD under different operating contexts of the FMS.