3101results about "Modulated-carrier systems" patented technology

This application provides a communication method and apparatus for reducing energy consumption while maintaining normal communication of a network apparatus. In the method, a terminal apparatus obtains operation mode information of a network apparatus, where an operation mode of the network apparatus includes one of a first operation mode or a second operation mode, and the first operation mode and the second operation mode belong to a same radio access technology. In the first operation mode, a transmission resource for a synchronization signal of the network apparatus has lower overheads or supports fewer functions. Alternatively, an access procedure in the first operation mode is different from an access procedure in the second operation mode. Based on the operation mode information, the terminal apparatus performs communication with the network apparatus by using the configuration information in one of the first operation mode and the second operation mode.

A first-type synchronization signal block (SSB) is transmitted on a cell at a first-type SSB time in a first mode. A second-type SSB is transmitted on the cell at a second-type SSB time on the basis of switching from the first mode to a second mode. The first type SSB includes a PSS, an SSS, and a PCBCH, and the second-type SSB has a different structure from the first-type SSB.

Methods, systems, and devices for wireless communications are described. A wireless device may perform a probabilistic shaping procedure using a shaping rate that is selected in accordance with a rule associated with a target spectral efficiency value, a modulation order, or both. Similarly, the wireless device may perform a channel coding procedure whose coding rate is selected in accordance with the rule. The rule may correspond to a relationship between the coding rate and the shaping rate. In some cases, the wireless device may select the shaping rate and the coding rate to be predefined values based on a target spectral efficiency value. In some examples, the wireless device may select the shaping rate and the coding rate based on a threshold coding rate, a quantity of punctured nodes used in the channel coding procedure, a quantity of layers corresponding to a multi-layer transmission, or any combination thereof.

Aspects presented herein may improve network energy saving by enabling a base station to transmit SSBs in a set of SSBs with different periodicities. In one aspect, a base station configures each SSB in a set of SSBs with an SSB transmission periodicity for a time period, the time period including multiple SSB burst set transmission occasions, where at least a first SSB and a second SSB in the set of SSBs are configured with different SSB transmission periodicities. The base station transmits the set of SSBs based on a corresponding SSB transmission periodicity of each SSB over the time period.

Disclosed are systems, apparatuses, processes, and computer-readable media for wireless communications. For example, an example of a process includes receiving a signal comprising a slot including at least one shared signal resource. The process further includes determining whether the slot is allocated for sensing and communications or is allocated for communications. The process further includes determining whether to demodulate the at least one shared signal resource using at least one sensing reference signal (RS) resource or at least one communication RS based whether the slot is allocated for sensing and communications or is allocated for communications.

A method by which a first device performs wireless communication and a device for supporting same are provided. The method can comprise the steps of: transmitting a random access preamble to a base station; receiving, from the base station, a random access response message related to the random access preamble; transmitting, to the base station, a radio resource control (RRC) setup request message on the basis of the random access response message; receiving, from the base station, an RRC setup message as a response to the RRC setup request message; and receiving, from the base station, an RRC message including a setup related to a Uu bandwidth part (BWP) and a setup related to a sidelink (SL) BWP, wherein first device cannot perform SL communication through the SL BWP on the basis of the fact that the numerology of the Uu BWP and the numerology of the SL BWP are different.

A transmission method and apparatus, a device, and a readable storage medium are disclosed. The method includes: sending, by a terminal, information for determining a position of a valid orthogonal basis and a coefficient of the valid orthogonal basis to a network side; wherein the information for determining the position of the valid orthogonal basis comprises at most two of spatial domain orthogonal basis, bitmap, or delay position. The method further comprises: receiving, by the terminal, first indication information that indicates the terminal not to send the spatial domain orthogonal basis and the delay position; sending the information for determining the position of the valid orthogonal basis to the network side comprises: sending the information for determining the position of the valid orthogonal basis to the network side, wherein the information does not comprise the bitmap, the delay position, and the spatial domain orthogonal basis.

The invention discloses an intelligent signal modulation identification method and system fusing time-frequency characteristics. The method comprises the following steps: extracting time-domain characteristics and frequency-domain characteristics in a radio signal in a complex baseband form; fusing the radio signal, the time domain feature and the frequency domain feature to obtain a multi-channel fusion feature; training a convolutional attention network model comprising a stem embedding layer, a plurality of cascaded feature extraction stages and a classification head; inputting the multi-channel fusion features into a trained convolutional attention network model, and performing feature extraction on the multi-channel fusion features through a stem embedding layer to obtain first extraction features; performing deep feature extraction on the first extraction feature through a plurality of cascaded feature extraction stages to obtain a second extraction feature; and inputting the second extraction feature into a classification head for signal modulation identification to obtain a signal modulation identification result corresponding to the radio signal. According to the invention, the accuracy of signal modulation identification can be improved.

The invention discloses a micro-action three-dimensional sensing method and system based on WiFi channel state information, and relates to the technical field of wireless signal sensing. The method comprises the following steps: collecting CSI data, preprocessing, and outputting a CSI amplitude matrix and a phase matrix; the phase difference of adjacent antenna pairs is used for counteracting common noise, a linear mapping model of displacement increment and phase change is constructed, and displacement calculation is achieved; designing a space-time TransFormer model, fusing CSI amplitude, phase difference, displacement increment and Doppler frequency shift characteristics through a time sequence and space joint attention mechanism, and outputting an initial three-dimensional trajectory; optimizing the initial three-dimensional trajectory by using a self-supervised learning mechanism based on physical consistency constraint; and finally, constructing a dynamic path filter, carrying out real-time filtering correction on the optimized trajectory in combination with extended Kalman filtering and Bayesian multipath fusion, and outputting a final three-dimensional trajectory, thereby realizing high-precision and low-delay trajectory reconstruction without labeling in a complex scene.

A beamforming front end (BFFE) for a receiver performs beamforming without needing to perform phase-shifting on each of a plurality of received signals. The BFFE comprises first variable gain amplifiers (VGAs) that respectively amplify the received signals by first gain values and second VGAs that respectively amplify the received signals by second gain values. Outputs of the first VGAs are combined into a first combined signal, and outputs of the second VGAs are combined into a second combined signal. The first and second combined signals are then used to produce an output signal corresponding to phase-shifting the received signals by amounts corresponding to the respective first and second gain values and then summing the results of the phase shifting. The output signal may be produced by mixing the first combined signal with an in-phase local oscillator signal and mixing the second combined signal with a quadrature local oscillator signal.

This disclosure provides methods, devices and systems for wireless positioning. An example method includes determining a first received signal strength indicator (RSSI) signature, the first RSSI signature including a respective RSSI associated with each access point (AP) of a first plurality of APs, where the first plurality of APs form at least a portion of a mesh network of APs, comparing the first RSSI signature with each reference RSSI signature of a first plurality of reference RSSI signatures, each reference RSSI signature of the first plurality of reference RSSI signatures including a respective RSSI associated with each AP of the first plurality of APs, and identifying a first position of the wireless STA based on the comparing of the first RSSI signature.

Embodiments of the application disclose a communication method and device. The method comprises: a first network device generates a first signal according to a first sequence, the first sequence being a product of a second sequence and a third sequence; the second sequence carrying data; an i-th element in the second sequence corresponding to an i-th subcarrier of N subcarriers in a first frequency domain resource, an i-th element in the third sequence corresponding to the i-th subcarrier in the first frequency domain resource, an i-th element in the first sequence being carried on the i-th subcarrier in the first frequency domain resource; the first frequency domain resource comprising M non-overlapping sub-frequency domain resources; the third sequence comprising M sub-sequences; a t-th sub-sequence in the M sub-sequences corresponding to a t-th sub-frequency domain resource in the M sub-frequency domain resources; a t-th relationship in M relationships being satisfied by the t-th sub-sequence in the M sub-sequences; and the first signal being sent. The ranging accuracy of the sensor-fusion signal is improved by using the embodiments of the application.

The apparatus may be a wireless device configured to estimate, for a first transmission in a first slot, a first channel associated with the first transmission, wherein the first transmission is associated with a first precoding, receive, in a second slot following the first slot, a second transmission associated with a second precoding, and estimate, based on the received second transmission and at least one of the received first transmission or the estimated first channel, a second channel associated with the second transmission.

Methods, systems, and devices for wireless communications are described. A first user equipment (UE) served by a first cell and a second UE served by a second cell may experience cross link interference (CLI). The UEs may have different subcarrier spacing (SCS) configurations. For example, the uplink SCS of the aggressor UE may be different from the downlink SCS of the victim UE. The serving base stations may configure the UEs with one or more parameters for generating and measuring a signal used to manage the CLI. The parameters may be based on the uplink SCS of the aggressor and the downlink SCS of the victim. The aggressor UE may apply the parameters to generate the CLI measurement signal, and the victim UE may apply the parameters to measure the CLI measurement signal, so the signal from the transmitter fits into the resource grid of the receiver.

A method for authenticating an application program interface (API) invoker enhances secure communication between API invokers and a Common Application Program Interface Framework (CAPIF). The method involves sending authentication information from the API invoker to the CAPIF function, which authenticates the invoker's identity. The process includes obtaining enrollment information to establish a secure transport layer security (TLS) connection with the CAPIF function. Advanced authentication mechanisms leverage an authentication and key management for applications (AKMA) anchor key, enabling secure derivation and verification of application function keys (KAF). Additionally, the CAPIF function uses received authentication data to retrieve API invoker configuration information, onboard signing keys, and certificates. These elements facilitate secure API access and interaction while ensuring compliance with authentication protocols.

The embodiment of the invention provides a communication method and a communication device. The method comprises: generating a first sequence of reference signals; the first sequence is mapped to M frequency domain resource units on K antenna ports, M positions of the M frequency domain resource units are indicated by a second sequence, the second sequence is generated according to a first parameter set, M and K are positive integers, and M is larger than or equal to K. Compared with predefining the position of the frequency domain resource unit for the reference signal, generating the second sequence according to the first parameter set enables the process of determining the reference signal pattern to be more flexible.

This disclosure provides a sounding reference signal (SRS) transmission method and apparatus. The method includes: A terminal device receives a cyclic shift offset value sent by a network device; determines a target SRS pattern from M SRS patterns based on the cyclic shift offset value, where the M SRS patterns correspond to N candidate cyclic shift offset values, each SRS pattern in the M SRS patterns includes a quantity of orthogonal frequency division multiplexing (OFDM) symbols and a quantity of SRS combs that are occupied by at least two SRS ports, the at least two SRS ports belong to a same SRS resource, N is greater than or equal to M, and M is an integer not less than 2; and sends an SRS based on the target SRS pattern.

Provided are an operation method of an NCR in a wireless communication system and the device. The NCR receives, from a base station, a control message related to beam indication for an access link and performs a forwarding operation on the basis of the control message. The control message includes a list of forwarding resources for the forwarding operation. Each forwarding resource included in the list is defined by a beam index and a time resource.

This disclosure relates to wireless communication methods that reduce power usage in a mobile station caused by monitoring Physical Downlink Control Channel (PDCCH). The mobile station can implement a PDCCH monitoring skipping behavior including skipping the monitoring of the PDCCH for a skipping period.

A device, computer readable medium and method for waking up a network device, involving user equipment, a first network device, and a second network device. The method includes determining and transmitting a wake-up signal from the user equipment based on transmit power, which is dynamically adjusted using communication protocol parameters such as initial transmit power, step increments, and maximum power thresholds. Wake-up signals are transmitted multiple times within a set period to ensure reliable reception. The first network device processes the wake-up signal, assesses signal quality, and interacts with the second network device to determine wake-up conditions based on agreed communication protocols and signal quality thresholds. The second network device manages wake-up coordination among multiple first network devices, identifying devices meeting quality conditions and transmitting wake-up indications and configuration details.

The embodiment of the invention provides a multi-tone signal sending method and device. The method comprises the steps that a first multi-tone signal is generated, the first multi-tone signal comprises N single-tone signals, the amplitude value of each single-tone signal is the same, the initial phases of at least two single-tone signals in the N single-tone signals are the same, or the absolute values of the initial phases of at least two single-tone signals in the N single-tone signals are the same, and N is an integer larger than or equal to 2; and sending the first multi-tone signal. According to the method disclosed by the invention, the average power of multi-tone signal transmission can be improved, and the transmission distance or the coverage range of the multi-tone signal can be further improved.

A communication device communicates a radio frame including a preamble and a data field of a physical layer (PHY). The preamble includes an L-STF (Legacy Short Training Field), an L-LTF (Legacy Long Training Field), an L-SIG (Legacy Signal Field), an EHT-SIG-A (Extremely High Throughput Signal A Field), an EHT-STF (EHT Short Training Field), and an EHT-LTF (EHT Long Training Field), and the EHT-SIG-A includes a subfield indicating whether data are concurrently transmitted from a plurality of communication devices to a common partner device.

A radio frequency (RF) IoT device may be configured to receive a group discovery query for a set of IoT devices from an RF source device. The group may be based on at least one of (a) an IoT device class, (b) a measurement type, (c) a data priority, (d) a type of information carried by the set of IoT devices, (e) a presence of data, (f) an amount of the data, (g) a distance from the RF source device, or (h) a set of identifiers for the one or more IoT devices in the group. The RF IoT device may be configured to transmit a response to the group discovery query based on the IoT device belonging to the set of IoT devices.

Methods, systems, and devices for wireless communications are described. A user equipment (UE) may use the techniques described herein to identify slots in which to transmit multiple sounding reference signal (SRS) resource sets triggered by one or more downlink control information (DCI) messages. In one aspect, the UE may determine a next available slot for transmitting an SRS resource set based on the available information at a timestamp and on a reference slot (e.g., the slot in which the latest DCI message is received or a slot that is offset from the slot in which the latest DCI message is received). In yet another aspect, the UE may receive one or more indications of slots in which to transmit the multiple SRS resource sets. In yet another aspect, the UE may follow one or more rules to identify slots in which to transmit the multiple SRS resource sets.

This document generally relates to wireless communication that includes: a user device that determines a sidelink positioning reference signal (SL-PRS) configuration, and transmits a periodic SL-PRS according to the SL-PRS configuration. Additionally, a user device receives a SL-PRS, and performing at least one measurement based on the periodic SL-PRS.

The invention discloses a signal modulation identification method fused to Transform and a hybrid expert mechanism, and belongs to the technical field of wireless communication and artificial intelligence crossing. The method solves the problem that the model capacity and the adaptability to complex signals are limited by a fixed feed-forward network in the automatic modulation identification of the conventional Transform model. According to the technical scheme, the method comprises the steps of inputting dual-channel time sequence signals of in-phase components and orthogonal components; extracting preliminary features through convolution operation; the features are input into a Transform architecture integrating an attention mechanism and a hybrid expert mechanism; in the hybrid expert mechanism, calculating a routing weight through a gating network with noise routing and sparsely activating an expert network; merging expert outputs according to routing weights to obtain depth features; and finally, outputting a modulation identification result through the classifier. According to the method, the calculation efficiency is maintained while the model parameter scale is expanded, and the recognition accuracy in a complex channel environment is improved.

An apparatus and method are provided for performing a subband operation for cross division duplex (XDD) technology to enhance coverage in wireless communication systems. A method includes identifying, by a user equipment (UE), an uplink (UL) or downlink (DL) subband configuration provided from a gNB to the UE, and determining a priority between a UL transmission and a DL reception based on whether a collision between DL and UL operations occurs in a time domain, wherein the UE is a half-duplex UE which performs the UL transmission at different times than when the UE performs the DL reception.

Disclosed are a method and device for transmitting and receiving a wireless signal in a wireless communication system. A method for transmitting a physical random access channel (PRACH) according to an embodiment disclosed herein comprises the steps of: receiving configuration information related to uplink transmission from a base station; and transmitting the PRSCH to the base station on the basis of the configuration information. The configuration information includes information about the subcarrier spacing (SCS) of the PRACH and information about the SCS of a physical uplink shared channel (PUSCH), and the number of resource blocks (RBs) occupied by the PUSCH can be determined, on the basis of i) the SCS of the PRACH, ii) the SCS of the PUSCH, and iii) the length of the PRACH sequence, as the minimum number of RBs to which a PRACH sequence can be mapped, wherein the number of RBs occupied by the PUSCH is expressed as the number of RBs for the PUSCH.

Methods and apparatuses for PUSCH transmission for partial coherent UE with 8 antenna ports are disclosed. In one embodiment, a UE comprises a transceiver and a processor coupled to the transceiver, wherein the processor is configured to receive, via the transceiver, a DCI scheduling a PUSCH, wherein the DCI includes an antenna port(s) field indicating the number of DMRS ports that determines a rank of the scheduled PUSCH, and the DCI further includes a TPMI field indicating one or two precoding matrices; and determine the precoding matrix for the scheduled PUSCH according to the rank and the one or two precoding matrices.