1387 results about "Downlink transmission" patented technology

A communication method and apparatus, and a terminal, and pertains to the field of wireless communication. The communication method according to an embodiment of this application includes: processing, by a terminal, a target transmission based on bandwidth capability; where the bandwidth capability of the terminal is a predetermined value, the predetermined value is less than or equal to 5 MHz, and the target transmission includes a first downlink transmission and / or a first uplink transmission.

Embodiments of the present disclosure relate to methods and apparatuses for frequency domain resource assignment on multiple carriers scheduled by a single DCI. According to some embodiments of the disclosure, a UE may: determine a payload size of a DCI format, wherein the DCI format schedules a first plurality of carriers of a second plurality of carriers, wherein the second plurality of carriers is configured by a BS; receive, from the BS, the DCI format according to the determined payload size, wherein the first plurality of carriers is indicated by a first indicator of the DCI format or is configured by the BS; determine RBs assigned on the first plurality of carriers based on the DCI format; and receive downlink transmissions on the assigned RBs in the case that the DCI format schedules the downlink transmissions, or transmit uplink transmissions on the assigned RBs in the case that the DCI format schedules the uplink transmissions.

Methods, systems, and devices for wireless communications are described. The described techniques relate to improved methods, systems, devices, and apparatuses that support random-access occasion (RO) selection for reduced-capability (RedCap) user equipment (UEs). A RedCap UE operating in a half-duplex mode may use the techniques described herein to efficiently select an RO in which to transmit a random-access preamble based on a duration between a latest received downlink transmission and the RO satisfying a threshold duration. The UE may receive system information mapping a set of synchronization signal blocks (SSBs) to a set of ROs. The UE may then select an RO from the set of ROs in which to transmit the random-access preamble such that the UE has sufficient time to transition from a receive mode to a transmit mode to transmit the random-access preamble.

This disclosure provides methods, components, devices and systems for access point (AP)-aided downlink transmission opportunity (TXOP) preemption by stations (STAs) with low-latency uplink traffic. Some aspects more specifically relate to how a STA transmits a preemption indication (PRI) associated with a signature of the STA and how an AP, via reception of signature-based PRIs, may obtain information relating to which specific STAs have low-latency traffic ready for uplink transmission. Such signatures may relate to a resource allocation, such as a tone pattern, used to transmit at least a portion of a PRI. In some examples, the AP transmits a preemption scheduling (PRS) frame that includes channel access information, for each of the STA(s) that sent a PRI, associated with a downlink TXOP of the AP. Such channel access information may include at least a grant of permission for STA(s) to attempt uplink preemption of the downlink TXOP.

An apparatus for wireless communication at a UE is disclosed. The apparatus comprises memory and at least one processor coupled to the memory. The apparatus is configured to measure a CMR for each of one or more downlink transmission beams. The apparatus is further configured to transmit a L1 measurement report including one or more measurements for the CMR and a reception beam identifier (ID) for a reception beam for each of the one or more measurements. Different measurements associated with a same CMR are associated with different UE identified reception beams

A method, apparatus and computer readable medium for resource determination in wireless communication. Uplink transmission resource allocation in scenarios involving simultaneous uplink and downlink transmission are addressed by determining frequency-domain resources occupied by an uplink subband based on a protocol. The determination is based on the resource blocks (RBs) of an uplink bandwidth part (BWP) in an uplink slot. A reference RB is used to identify the subband's location, ensuring that the number of RBs occupied by the uplink subband is consistent with those occupied by the uplink BWP.

A wireless transmit / receive unit (WTRU) may be configured to receive configuration information associated with a first transmission configuration indicator (TCI) state group and a second TCI state group. The WTRU may be configured to report first respective measured downlink received power values and first respective determined power reduction values. The WTRU may be configured to report second respective measured downlink received power values and second respective determined power reduction values. The WTRU may be configured to receive an indication of the first TCI state group via a downlink transmission. The WTRU may be configured to determine a first TCI state from the first TCI state group based on downlink received power information and power reduction information. The WTRU may be configured to send an uplink transmission based on the first determined TCI state.

Embodiments include methods for a user equipment (UE) to synchronize timing with a wireless network. Such methods include receiving, from a first node serving a first cell in the wireless network, a first message that includes an absolute reference time and a corresponding reference event within downlink, DL, transmissions by the first node; and determining whether the UE received, from the first node, a timing adjustment value from which the UE can estimate a propagation delay of the DL transmissions. Such methods include, based on determining that the UE did not receive the timing adjustment value, performing one of the following: transmitting, to the first node, an indication that the UE did not receive the timing adjustment value; or declaring radio link failure with respect to the first cell and establishing a connection with a second cell capable of providing the information included in the first message.

Apparatus and methods are provided to enhance communications for NTN. In some aspects, a base station (BS) comprises a processor configured to schedule an uplink transmission in response to an uplink transmission request from a user equipment (UE) using one or more subframes ranging from a first uplink subframe to a last uplink subframe. The processor is further configured to determine or receive a timing advance (TA) indicating amount of subframes transmitted during a time delay between the UE and the BS and schedule a downlink transmission aligned with the uplink transmission. The downlink transmission is blocked from subframes ranging from TA plus one or more subframes ahead of the first uplink subframe to TA minus one or more subframes ahead of the last uplink subframe. The processor is further configured to transmit and receive, via a non-terrestrial equipment, the uplink and the downlink.

The invention discloses an LEO satellite power distribution and association method and system based on a cellular-free architecture in the technical field of wireless communication, and the method comprises the steps: carrying out the maximum ratio transmission precoding of all satellite access points, and generating a coding modulation signal; after the target users receive the coded modulation signals, receiving signals are formed at a receiving end, and the signal-to-interference ratio and the downlink transmission rate of each target user are calculated through the receiving signals; accumulating downlink transmission rates of all target users through a central satellite, and calculating system energy efficiency in combination with total power consumption of all satellite access points; and constructing an objective function with maximization of the system energy efficiency, solving the objective function through an iterative optimization algorithm under the constraint condition of a satellite transmitting power upper limit and a user-satellite coverage relationship, and determining an optimal power allocation and user-satellite association scheme. The method can adapt to the high-speed motion characteristic of the LEO satellite, and the system energy efficiency and the resource utilization rate are remarkably improved.

A user equipment (UE) may transmit a configured-grant uplink control information (CG-UCI) to a base station during a channel occupancy time (COT) initiated by the UE in a shared spectrum, the CG-UCI comprising COT sharing information, the COT sharing information indicating, at least, an index value corresponding to a combination of: an indication of an offset to a beginning of a downlink transmission opportunity during the COT; an indication of a duration of the downlink transmission opportunity during the COT; and an indication of a channel access priority class (CAPC) value used by the UE to initiate the COT. The base station may transmit a downlink transmission to the UE within the downlink transmission opportunity and in accordance with the COT sharing information in the transmitted CG-UCI. Apparatuses are also disclosed.

A WTRU operating in an inactive state may be associated with a first cell. The WTRU may be configured to receive configuration information for a time period associated with small data transmission failure detection and a search space associated with small data transmission. The WTRU may be configured to send a first small data transmission and start the time period. The WTRU may be configured to monitor for a downlink transmission in the search space during the time period. If a condition for cell reselection is satisfied during the time period or the restarted time period, the WTRU may be configured to suspend a data radio bearer (DRB) associated with small data transmission, select a second cell, perform a random access procedure associated with the second cell, and send a small data transmission. The random access procedure may include sending a request to resume a radio resource control (RRC) connection.

A method and an apparatus for transmitting and receiving channel state information (CSI) in a wireless communication system are disclosed. A method of performing downlink reception by a user equipment (UE) in a wireless communication system according to an embodiment of the present disclosure may comprise: receiving, from a base station, configuration information for two or more control resource set (CORESET) groups, each of the two or more CORESET groups including at least one CORESET; receiving, from the base station, information indicating two or more transmission configuration indicator (TCI) states; and based on the two or more TCI states, updating TCI state information for the two or more CORESET groups. Here, at least one of the two or more CORESET groups may include a specific CORESET associated with a plurality of TCI states.

A wireless transmit receive unit (WTRU) may receive an indication of a transmitted synchronization signal block (SSB) included in a SSB burst and an indication of a skipped SSB in the SSB burst. The skipped SSB is not transmitted by the base station in the SSB burst. The WTRU may determine to send an indication that the WTRU wants to use the skipped SSB for or after the initial access procedure. The WTRU may transmit a random access preamble using a random access resource and receive at least one downlink transmission using a beam associated with the skipped SSB.

A communication method and a communication device, the communication method comprising: a terminal device receiving indication information, the indication information being used for enabling first information comprising a transmission opportunity conflicting with an SSB, the first information being used for indicating whether a transmission opportunity in a configuration authorization CG window is used; and sending the first information according to the indication information. Through the method, the first information (such as UTO-UCI) can be enabled through the indication information to indicate whether the transmission opportunity conflicting with the SSB in the CG window is used or not, so that the network equipment can determine when to measure the SSB in the same-frequency measurement and / or different-frequency / different-system measurement process of the terminal equipment; therefore, uplink and downlink transmission with the terminal equipment can be carried out on the time unit when the terminal equipment does not execute SSB measurement, resource waste can be avoided, and the capacity of a network system is improved.

A method for operating a user equipment (UE) comprises receiving configuration information including a list of component carriers (CCs) and at least K transmission configuration indicator (TCI) states, where K>1 and each TCI state includes a TCI state identifier (ID) and a quasi co-location information (QCL-Info). The method further includes receiving an activation command via medium access control-control element (MAC-CE) to activate N TCI state IDs from K TCI state IDs, wherein N<K and the activation command is common across the list of CCs, determining a TCI state Ti for a CC i in the list of CCs based on the activated N TCI state IDs, and transmitting an uplink (UL) transmission or receiving a downlink (DL) transmission for the CC i based on a QCL-Info included in the determined TCI state Ti.

The invention provides a satellite signal transmitting method, device and equipment and a computer storage medium, and the method comprises the steps: determining a target first signal and a target satellite through signal quality evaluation parameters of a plurality of first signals received by first ground equipment, and then carrying out the transmission of a satellite signal based on a pseudo-range of the target first signal and an error correction parameter of the target satellite, calculating the downlink transmission time of the second signal, then obtaining the receiving moment when the first ground equipment receives the target first signal, calculating the theoretical emission moment of the second signal based on the receiving moment and the downlink transmission time of the second signal, and obtaining the superframe duration and the theoretical emission moment of the second signal; and calculating the first uplink transmission time delay when the second ground equipment transmits the third signal to the target satellite, and finally adjusting the actual transmission time of the third signal of the second ground equipment according to the first uplink transmission time delay, so that the actual transmission time of the third signal is aligned with the theoretical transmission time of the second signal, thereby improving the transmission success rate of the satellite signal.

The invention provides a method for testing the communication bandwidth of a 10-gigabit network between an FPGA (Field Programmable Gate Array) and a CPU (Central Processing Unit), which is applied to a radar system. The FPGA completes a function of regularly generating data and a function of downlink transmission of the data; the 10-gigabit network exchange board card completes data transmission and sends data to the CPU board card through a 10-gigabit network; and the CPU board card receives the data and calculates the communication bandwidth and the network quality. According to the invention, the limitation of traditional single-port point-to-point transmission or simple multi-port parallel transmission on synchronization, load balancing or protocol overhead is solved, and a solution is provided for how to effectively utilize multiple ports, enable the multiple ports to simultaneously and efficiently work and ensure parallel transmission of data without mutual interference.

The invention discloses a reconfigurable intelligent surface (RIS)-assisted multiple-input-multiple-output (MIMO) implicit channel estimation method based on a graph attention network, which is used for efficient downlink transmission in a multi-user scene. Firstly, a graph attention network is designed, user nodes and RIS nodes are modeled in a unified mode, received pilot signals serve as initial features, spatial feature expression is enhanced in combination with user three-dimensional position information, and therefore interference between users and a spatial correlation structure are accurately represented; secondly, end-to-end feature aggregation is achieved based on a message passing mechanism, a base station beam forming matrix and an RIS reflection coefficient are directly predicted under the condition that explicit channel estimation is not needed, and the total transmitting power constraint and the unit mode constraint are met through normalization processing so as to complete joint optimization; according to the method, the users and the speed of the system can be remarkably improved under limited pilot frequency overhead, and the method has excellent generalization performance and robustness in a multi-user complex propagation environment.

A base station may transmit, to a wireless device, one or more messages indicating transmission configuration indicator (TCI) states for downlink transmissions. The base station may transmit, to the wireless device, a medium access control control element (MAC CE) activating a plurality of TCI states of the TCI states. The base station may transmit, to the wireless device based on a reference signal identified during a random access procedure and before receiving downlink control information (DCI) indicating a TCI state from the plurality of TCI states, one or more downlink signals.

A system and method for enabling downlink signal transmission in a Multiple-Input Multiple-Output (MU-MIMO) system is provided. The method comprises of creating a scheduling information based on MU-MIMO Scheduling of a plurality of User equipments (UES), multiplexing the plurality of UES paired based on the scheduling decisions across time, frequency and code, inputting transport blocks of each UE pushed on to a Downlink shared channel (DLSCH), performing bit processing of each of the CRC encoded UEs, inputting Code-rate (MCS) for data modulation mapping on a post bit processed data, assigning DM-RS ports to the UE based on allocated MCS and number of antenna ports from a scheduling information structure, adding, a Partial Port Occupancy information (P-Poi) for each UE along with the scheduler information structure required for demodulation at UE and enabling optimal channel estimation at UE by adding new DM-RS port combinations using reserved fields in the DCI messaging.

A user equipment according to an aspect is registered with a first mobile network by using a first subscriber identity module (SIM) and registered with a second mobile network using a second SIM. The user equipment includes a processor. The processor executes a process of receiving, from the first mobile network, configuration information for configuring either a non-execution timing for not executing downlink transmission from the first mobile network to the user equipment or an execution timing for executing the downlink transmission. The processor executes a process of transmitting, to the second mobile network, identification information for identifying a timing configured according to the configuration information.

Systems and methods for predicting network interference. First history data on terrestrial network cell-to-user device transmissions in a terrestrial network is obtained. And second history data on user device-to-non-terrestrial network satellite transmissions in a non-terrestrial network is obtained. An artificial intelligence mechanism is employed on the first and second history data to generate a model of historical terrestrial network cell downlink transmission interference on historical non-terrestrial network satellite uplink transmissions of a non-terrestrial network satellite in the non-terrestrial network. The current terrestrial network cell downlink transmission interference on current non-terrestrial network satellite uplink transmissions is predicted based on the generated model. At least one bandwidth utilization scheme is modified for at least one terrestrial network cell of the terrestrial network and the non-terrestrial network satellite of the non-terrestrial network based on the predicted current terrestrial network cell downlink transmission interference.

A base station and / or a wireless device may perform a communication procedure. A downlink transmission for initiating the communication may indicate an antenna panel for transmission of an uplink signal from the wireless device. A slot for transmission of the uplink signal may be determined based on an antenna panel activation delay.

Various aspects of the present disclosure relate to a user equipment (UE) that receives, from a base station, a signaling indicating an orthogonal angular momentum (OAM) multiplexing configuration of one or more configured OAM modes. The UE can apply at least one of the configured OAM modes for receiving a downlink transmission and / or transmitting an uplink transmission. The base station transmits the OAM multiplexing configuration of the one or more configured OAM modes to be applied at the UE, and the base station can then receive, from the UE, an uplink transmission with at least one of the configured OAM modes applied.

Various aspects of the present disclosure relate to a base station and methods that manage cross-link interference during wireless communication especially in dynamic time division duplexing (TDD) using flexible symbols. In one aspect, a processor of an originating base station is configured to cause the base station to: determine downlink transmission parameters to communicate downlink resources to the one or more user equipment (UEs); and identify a spatial pattern to communicate the downlink resources to the one or more UEs. The processor is further configured to cause the base station to communicate, to a second base station, a spatial pattern information element (IE) containing at least one indication of the spatial pattern for cross-link interference management, the spatial pattern IE enabling the second base station to mitigate interference.

Configured grant (CG) channel occupancy time (COT) sharing procedure is disclosed. A user equipment (UE) sharing a COT may indicate in the uplink control indicator (UCI) the remaining COT duration, an offset indication identifying where the uplink transmission is expected to end, and a channel access priority class (CAPC) which may be used by the base station to determine which type of data may be included in downlink transmissions in the shared COT. Where the energy detection (ED) threshold has not been configured for COT sharing, the UE may reduce the information included in the UCI. The base station may alternatively configured which information for the UE to include in the UCI for potential COT sharing. The COT sharing information may further be compressed by coding such information into tables or leveraging knowledge of transmission characteristics, such as configured end points.

This disclosure provides systems, methods and apparatus, including computer programs encoded on computer storage media, for transmitting sounding reference signal (SRS) resources with frequency hopping. In some implementations, a user equipment (UE) may use different SRS ports, different antenna ports, different numbers and sizes of SRS resources, different periodicities, different offsets, different transmission comb values, different number of symbols, different power control parameters, and / or different transmission comb offset values for SRS transmissions on different frequency subbands of the frequency hopping pattern to ensure that sounding operations cover all antennas of the UE, cover the entire frequency range of interest, and provide sufficiently dense SRS transmissions from which a base station can determine the best channel for DL transmissions while also using a minimum amount of SRS resources and consuming minimal power in the UE.

Provided are an operation method performed by a first distributed unit (DU) of a first parent node communicating with a mobile terminal (MT) of an IAB node in a wireless communication system, and a device using the method. The first parent node acquires first configuration information about the first DU, acquires second configuration information about a second DU of a second parent node communicating with the MT, and restricts, on the basis of the first configuration information and the second configuration information, downlink transmission or uplink reception operations of the first DU if predetermined conditions are satisfied.

The invention discloses a container isolation and double-node management fused data integration governance method and system, and relates to the technical field of data integration governance. Communication time sequence data between a plurality of groups of main nodes and branch nodes of a hydropower station is monitored in real time, and deep analysis is performed by using a neural network model CNN; indexes such as data drift rate and data coverage difference can be accurately identified, and the data synchronization condition can be evaluated in real time. The accuracy of data synchronization between the nodes is promoted to be improved, and the data consistency and timeliness are ensured. By constructing the communication state model and deeply analyzing the data, the communication state can be accurately evaluated, and key communication indexes such as the uplink and downlink transmission ratio, the burst load index and the like can be identified. Once it is found that the communication state is unstable, the first governance strategy, the second governance strategy and the third governance strategy can be triggered, so that the data transmission path is optimized, the network load is adjusted, resource allocation is effectively optimized, and the overall operation efficiency of the system is improved.