68 results about "Duplex system" patented technology

Systems, methods, apparatuses, and computer program products for enhancing dynamic CORESET adaptation with limited or no control channel overhead. One method may include receiving, by a UE, a plurality of PDCCH CORESET configurations associated with at least one SS; determining, by the UE, at least one of the PDCCH CORESET configurations is associated with a symbol or slot format from a corresponding set of symbols; and performing, by the UE, PDCCH monitoring on an active control resource set configuration associated with the set of determined slots or symbols.

Embodiments of the present disclosure relate to channel state information (CSI) framework in a full duplex (FD) system. According to some embodiments of the disclosure, a UE may: determine a first type of CSI reference signal (CSI-RS) and a second type of CSI-RS based on at least one CSI-RS resource setting and a specific configuration; and measure at least one of the first type of CSI-RS or the second type of CSI-RS to derive a channel measurement or interference measurement for a CSI report.

Systems, methods, and instrumentalities are disclosed herein associated with timing alignment in duplex. A wireless transmit / receive unit (WTRU) may be configured to determine a guard time period. The WTRU may receive information related to a grant allocation. The grant allocation may begin at a time associated with a number of starting symbol(s) within a subband. The WTRU may determine that the time associated with the number of starting symbol(s) is within the guard time period. The WTRU may calculate the difference between the time associated with the number of starting symbols and the start time of the guard time period. The WTRU may determine to puncture a part of the transmission that uses the grant allocation based on the size of the difference between the time associated with number of starting symbol(s) and the start time of the guard time period.

Embodiments of the present disclosure relate to methods and apparatuses for downlink (DL) transmission in a full duplex (FD) system. According to some embodiments of the present disclosure, a user equipment (UE) may include: a transceiver configured to receive configuration information which configures at least one subband; and a processor coupled to the transceiver and configured to determine, based on an indication, an active subband from the at least one subband for physical downlink shared channel (PDSCH) rate match or for uplink (UL) transmission or that none of the at least one subband is activated for PDSCH rate match.

Methods and apparatuses for transmission timing in full-duplex wireless communication systems. A method for transmitting an uplink (UL) signal or channel associated with a transmission timing procedure includes receiving first information for first parameters of a first transmission timing configuration associated with a first subset of slots from a set of slots on a cell, second information for second parameters of a second transmission timing configuration associated with a second subset of slots from the set of slots on the cell, and third information for a condition. The method further includes determining whether the condition is valid for transmission in a slot from the second subset of slots and transmitting the UL signal or channel in the slot based on the first transmission timing configuration when the condition is valid and the second transmission timing configuration when the condition is not valid.

The application discloses an implementation method suitable for a high-throughput satellite communication hybrid duplex system, which acquires double-network statistical basic data containing end station round-trip propagation delay distribution and phased array antenna transmission-reception switching characteristics; constructs a dual-coupling time planning mathematical model with original network and mirror network time window start and end time as optimization variables, and solves optimal time parameters under the conditions of satisfying physical constraints such as delay reachability, antenna switching safety and main station reception zero overlap; and the main station broadcasts time slot configuration instructions to cooperatively control all network end stations to perform hybrid duplex transmission-reception. The application also introduces a closed-loop feedback mechanism based on end station local observation, estimates delay drift by using network clock reference information, and corrects model input. The application realizes zero conflict hybrid duplex communication under complex physical constraints by converting static configuration into dynamic mathematical optimization solution, and improves satellite spectrum resource utilization rate and system operation stability.

Provided are a wired transmission time division duplex system and a node device thereof. The node device comprises a receiver configured to receive a data frame; a transmitter configured to send a processed data frame; a frame header detection circuit configured to identify a frame header and a preamble in a non-return-to-zero coding format from the data frame based on a specific code sequence, and obtain frame header information accordingly, and detect a level jump edge in the frame header and the preamble, and output a reference clock signal based on the detection result; and a clock and data recovery circuit configured to map a multi-level digital signal of a data segment after the frame header and the preamble into binary data bits using a corresponding pulse amplitude modulation format based on the frame header information, and recover a local receiving clock based on the reference clock signal. The slave node device effectively overcomes the synchronization difficulty and slow clock recovery in a multi-level pulse amplitude modulation system.

Apparatuses and methods for user equipment (UE) power class fallback in full-duplex (FD) systems. A method for operating a user equipment (UE) includes receiving information for an uplink (UL) transmission and a downlink (DL) reception on a cell and determining, based on the information, first and second UE maximum output powers for an UL transmission bandwidth according to first and second UE power classes associated with the UL transmission in first and second subsets of slots, respectively, from a set of slots on the cell. The method further includes determining first and second UL transmit powers based on the first and second UE maximum output powers, respectively and transmitting, based on first or second UL transmit power, an UL signal or channel in the first subset of slots or in the second subset of slots, respectively.

The application provides a parallel machine control method, a charger parallel system and a computer readable storage medium. The method comprises the following steps: after the charger parallel system is started, each charger connected to a communication bus sets a first timer to zero when a timing value of the first timer reaches a waiting time of the charger and no first data frame is received from the communication bus, and simultaneously uses a second timer to time and sends a first data frame to the communication bus at a preset period; the battery inspector receives the first data frame from the communication bus and generates a second data frame according to the received first data frame, and sends the second data frame to the communication bus, wherein the second data frame comprises state feedback information in response to a state reading command in the first data frame; all the chargers receive the second data frame from the communication bus and analyze the second data frame to obtain the state feedback information of the battery inspector. The application can effectively reduce the communication bus conflict in a half-duplex system.

The invention relates to the technical field of wireless communication, and particularly provides an information transmission method and device, electronic equipment and a computer program product. The method comprises: sending a random access response message to a terminal device, a cyclic redundancy check (CRC) of a physical downlink control channel (PDCCH) for scheduling the random access response message being scrambled by a first type radio network temporary identifier (RNTI) or a second type RNTI, the type of the terminal device comprising: a first type terminal device and / or a second type terminal device, the first type of terminal equipment corresponds to the first type of RNTI and / or the second type of RNTI, and the second type of terminal equipment corresponds to the second type of RNTI. According to the method and the device, the CRC is scrambled through the first type of RNTI or the second type of RNTI, different random access responses RARs are distinguished in a sub-band non-overlapping full-duplex SBFD system when the random access resource or opportunity RO index selected by the SBFD terminal and the non-SBFD terminal in the same time slot is the same as the preamble index, and then different optimal scheduling can be carried out on the SBFD terminal and the non-SBFD terminal.

The disclosure relates to a 5G or 6G communication system for supporting a higher data transmission rate. Apparatuses and methods for user equipment (UE) power class fallback in full-duplex (FD) systems. A method for operating a user equipment (UE) includes receiving information for an uplink (UL) transmission and a downlink (DL) reception on a cell and determining, based on the information, first and second UE maximum output powers for an UL transmission bandwidth according to first and second UE power classes associated with the UL transmission in first and second subsets of slots, respectively, from a set of slots on the cell. The method further includes determining first and second UL transmit powers based on the first and second UE maximum output powers, respectively and transmitting, based on first or second UL transmit power, an UL signal or channel in the first subset of slots or in the second subset of slots, respectively.

Methods and apparatuses for downlink and uplink transmissions in full-duplex systems. A method for operating a user equipment (UE) for receiving a physical downlink shared channel (PDSCH) includes receiving: first information for a first modulation and coding scheme (MCS) table associated with a first frequency-domain subband in a reception bandwidth on a cell, second information for a second MCS table associated with a second frequency-domain subband in the reception bandwidth, and third information for a condition. At least one of the first and second frequency-domain subbands is one of a subband full-duplex (SBFD) downlink (DL) subband, an SBFD flexible subband, or an SBFD uplink (UL) subband. The method further includes determining whether the condition is valid for reception in a slot or symbol and receiving the PDSCH in the slot or symbol based on the first MCS table when valid and the second MCS table when not valid.

Methods and apparatuses are provided for managing transitions between sub-band frequency division duplex (SBFD) and non-SBFD modes in full duplex communication systems. A RACH occasion is configured spanning across a SBFD symbol, a subsequent non-SBFD symbol, and a period between the symbols for transitioning between SBFD communications and non-SBFD communications. A wireless device may determine whether a UE is to switch from a first uplink configuration associated with SBFD communications to a second uplink configuration associated with non-SBFD communications during a configuration transition period. The device may communicate a RACH preamble before, during, or after the switch. A timing of the configuration transition period may be based on scheduling restrictions, reported UE capabilities, determined guard symbol lengths, or configured SBFD or non-SBFD modes for RACH occasions. Thus, uninterrupted PRACH transmission across SBFD and non-SBFD symbols may be achieved, enhancing the efficiency of data communication in full duplex systems.

A wireless communication method is disclosed. The method comprises performing, by the communication unit with a wireless communication node, a communication, via a Time Division Duplexing, TDD, system, comprising radio frames comprising uplink radio subframes configured for uplink communication, downlink radio subframes configured for downlink communication and / or a guard period between the downlink radio subframes and the uplink radio subframes, wherein the guard period comprises one or more continuous radio frames; wherein the communication comprises the wireless communication terminal monitoring a channel, signal, and / or occasion.

Methods and apparatus for transmission and reception in a full duplex system. A method of operating a user equipment (UE) includes receiving a first candidate subband full duplex (SBFD) configuration associated with a first transmission configuration indicator (TCI) state configuration on a cell; receiving a second candidate SBFD configuration associated with a second TCI state configuration on the cell; and identifying the TCI state code point. The method further includes (i) selecting a first candidate SBFD configuration when the value of the TCI state code point is associated with a first TCI state configuration, or (ii) selecting a second candidate SBFD configuration when the value of the TCI state code point is associated with a second TCI state configuration, and receiving or transmitting a channel or signal based on the selected SBFD configuration.

The invention discloses a 5G network ultra-far coverage method, system and device for marine economy and a medium, and belongs to the technical field of wireless communication, and the method comprises the steps: building a geometric propagation relation based on the earth curvature according to the hanging height of an antenna and the height of a terminal device, and calculating a sight distance coverage distance through a geometric figure formed by a base station antenna, a terminal and the earth center; adaptively selecting a working frequency band according to the sight distance coverage distance and the service bandwidth requirement, determining an antenna gain requirement and a beam width requirement according to the wavelength characteristic of the working frequency band, and selecting an antenna; when a time division duplex system is adopted, the cyclic prefix length and the guard interval length are configured according to the propagation time delay so as to expand the coverage distance; and when the frequency of the working frequency band is relatively high, a multi-cell joint receiving and uplink channel quality enhancement technology is configured. According to the method, the sight distance coverage range is accurately calculated by establishing the geometric propagation model based on the earth curvature, and ultra-long-distance coverage of the sea area is realized through frequency band antenna collaborative optimization and frame structure parameter configuration.

Systems and techniques are provided for wireless communications. A network entity can transmit a first configuration of a backoff indicator (BI) associated with a prioritized random access procedure, the first configuration corresponding to a first type of random access channel (RACH) occasions (ROs). The network entity can transmit a second configuration of the BI, the second configuration corresponding to a second type of ROs different from the first type of ROs. The network entity can transmit, to a user equipment (UE), information including a BI value corresponding to a backoff for the prioritized random access procedure by the UE, wherein the BI value indicates a first time value for the backoff based on the first configuration and indicates a second time value for the backoff based on the second configuration.

Methods, systems, and devices for wireless communications are described. A user equipment (UE) may receive random access configuration information that indicates a set of target power parameters and a set of power offset parameters. The set of target power parameters may be associated with a first slot type or a second slot type, and the set of power offset parameters may be associated with the first slot type or the second slot type. The UE may transmit a random access message during a random access occasion of the first slot type according to a first target power parameter of the set of target power parameters and a power ramping parameter.

The application provides a communication method and a base station, and belongs to the technical field of wireless communication, and the method comprises the following steps: performing at least one of the following according to resources and / or parameters associated with downlink scheduling of a second base station in a cross-interference time slot: uplink scheduling in the cross-interference time slot; uplink demodulation in the cross-interference time slot; and configuring an uplink demodulation reference signal. The application provides an interference cancellation method without a channel calibration process between a disturbing base station and a disturbed base station in a full-duplex system or other systems with cross-interference time slots, and the interference cancellation method also does not require the disturbing base station to exchange downlink data of the disturbing base station in the cross-interference time slot with the disturbed base station.

This disclosure provides systems, devices, apparatus, and methods, including computer programs encoded on storage media, for power control in FD systems based on a PL-RS for measuring self-interference. In aspects, a base station may configure a PL-RS for one or more beam pairs and schedule a DL transmission including the PL-RS. A UE may measure self-interference corresponding to the one or more beam pairs based on the PL-RS and adjust an UL Tx power for a FD operation based on the self-interference measured for the one or more beam pairs. The UE may subsequently transmit an UL transmission for the FD operation based on the adjustment to the UL Tx power, such that the base station may receive an UL transmission having an UL Tx power that is based on the measured self-interference associated with the PL-RS.

This disclosure describes systems, methods, and devices related to optimized transmission. A device may receive, in a SBFD operation, an assignment for a resource block group (RBG) for an uplink (UL) transmission over at least one slot. The device may determine, for each slot, a number of physical resource blocks (PRBs) based on whether the assigned RBG overlaps with an uplink subband boundary, wherein the number of PRBs is determined as the number of PRBs in the RBG that are part of usable PRBs for UL in an SBFD slot and as the number of assigned PRBs in a non-SBFD slot. The device may calculate a transport block size (TBS) for transport block processing over multiple slots based on a total number of PRBs determined for the slots. The device may transmit, over a physical uplink shared channel (PUSCH), a transport block of the size calculated.

Apparatuses and methods for uplink transmission in full-duplex systems. A method includes receiving first information for first parameters that include a first time-domain resource allocation (TDRA) table associated with a first subset of slots from a set of slots on a cell and second information for second parameters that include a second TDRA table associated with a second subset of slots from the set of slots on the cell. The method further includes determining a first TDRA entry from the first TDRA table and a second TDRA entry from the second TDRA table and transmitting a first repetition of a physical uplink shared channel (PUSCH) in a first slot from the first subset of slots on the cell based on the first TDRA entry and a second repetition of the PUSCH in a second slot from the second subset of slots on the cell based on the second TDRA entry.

The application discloses a mirror suppression mixing device with in-band self-interference cancellation capability, wherein a central station comprises a signal processing module, a 90-degree electrical coupler a, a photodetector x, a photodetector y, a polarization beam splitter and an optical power amplifier; a transmission medium is a single-mode optical fiber; a remote base station comprises a laser, a polarization controller, a polarization multiplexing-double drive-Mach-Zehnder modulator, an optical filter, a receiving antenna, a transmitting antenna, a direct current source x, a direct current source y, an electrical beam splitter a and an electrical beam splitter b, an electrical beam combiner a and an electrical beam combiner b, a 90-degree electrical coupler b, a local oscillator signal generator, an electrical attenuator and an electrical delay line. The application also provides a mirror suppression mixing method with in-band self-interference cancellation capability. The application not only can play the high spectral efficiency advantage of the in-band full duplex system, but also is not affected by the dispersion-induced power periodic fading phenomenon caused by optical fiber transmission, can effectively eliminate self-interference signals under the in-band full duplex system, and can effectively suppress the mirror interference caused by the open channel reception.

A wireless transmit and receive unit (WTRU) may perform measurements on reference signals (RSs) received from other WTRUs in order to estimate cross-link interference (CLI) in a full-duplex system. The WTRU may receive, from a network, an indication of one or more reference signals (RSs) to be used by the WTRU to perform the measurements. The WTRU may have the capability to identify and measure the RSs autonomously. The WTRU may also receive an indication of one or more TCI-states to be used when performing CLI measurements. The WTRU may use the current downlink TCI-state to perform the measurement. The TCI-state may be specific to each RS. The RS may be a sounding reference signal (SRS). The CLI may be measured using reference signal received power (RSRP). The WTRU may continuously monitor SRSs and send CLI reports to the network upon detection of an event associated with the measurement.

This invention proposes a collaborative uplink / downlink channel extrapolation method for large-scale MIMO systems. Addressing the issues of limited uplink pilot bandwidth and uplink / downlink timing asynchrony in time-division duplex systems, this method proposes a collaborative channel reconstruction scheme between the User Equipment (UE) and the Base Station (BS). Specifically, the method includes: at the UE, extracting downlink propagation delay parameters from a small number of high-energy downlink beam observations using a smoothed MUSIC algorithm, and feeding back only the low-dimensional delay parameters to the base station; at the BS, estimating the uplink / downlink delay offset using uplink narrowband pilot observations, and calibrating the fed-back delay parameters; at the BS, using complementary subspace projection technology, further estimating the lost delay paths in the downlink observations from the uplink observations, and merging them to obtain a complete delay set; based on the complete delay set, reconstructing the full-band uplink channel using a compressed sensing algorithm. This method significantly reduces computational complexity while maintaining channel extrapolation accuracy.

The invention relates to the technical field of signal processing, and discloses a simultaneous same-frequency full-duplex self-interference elimination method and system, and the method comprises the steps: carrying out the data preprocessing of a generated self-interference signal, generating a self-interference signal containing a nonlinear factor, and constructing a training data set according to the self-interference signal; establishing a plurality of CNN-LSTM attention models for extracting nonlinear features and time sequence features of the self-interference signals; an auxiliary sub-module is introduced in the training stage of the model, so that the model has internal knowledge migration, and knowledge distillation of a feature level is realized; training the model, and performing parameter optimization by adopting a loss function which considers the amplitude and the phase of the complex signal at the same time; based on the trained model, linear and nonlinear two-stage self-interference elimination is carried out on the received signal, self-interference suppression in a full duplex system is realized, and the problems that the existing full duplex nonlinear self-interference elimination method based on deep learning is insufficient in feature extraction capability, limited in supervision information and low in training speed are effectively solved through the method.

The present disclosure relates to a 5G or 6G communication system for supporting a higher data transmission rate. An apparatus and method for adaptation of listening of a physical downlink control channel (PDCCH) in a full duplex (FD) system. A method in which a user equipment (UE) receives a PDCCH includes receiving first and second sets of parameters for receiving first and second PDCCHs associated with first and second subsets of slots, respectively. The method further includes receiving a first PDCCH from the first PDCCH providing a downlink control information (DCI) format, the DCI format including a field indicating that reception of the second PDCCH is skipped, and based on the field, skipping reception of the second PDCCH in a slot from a second subset of slots at a first occasion, the first occasion after receiving the first PDCCH and before an end of the duration.

A wireless device receives downlink control information (DCI) scheduling downlink receptions in subband full duplex (SBFD) symbols and non-SBFD symbols. An offset between reception of the DCI and a starting symbol of the downlink receptions is less than a threshold. Based on the offset being less than the threshold, the wireless device receives the downlink receptions in a default symbol type among the SBFD symbols and the non-SBFD symbols.

Various aspects of the present disclosure generally relate to wireless communication. In some aspects, a network entity may receive first information indicating a pattern of one or more subband full-duplex (SBFD) time intervals and one or more non-SBFD time intervals. The network entity may receive second information associated with multiple repetitions of an uplink control channel communication, wherein the second information is indicative of a valid time interval type for the multiple repetitions, and wherein the valid time interval type is either an SBFD type or a non-SBFD type. The network entity may transmit one or more repetitions, of the multiple repetitions, during one or more time intervals having the valid time interval type. Numerous other aspects are described.