Abstract: Example embodiments of the present disclosure relate to an effective mechanism for reference signal (RS) configuration. In this solution, the terminal device determines at least one cyclic shift (CS) for an SRS transmission with four antenna ports, the at least one CS comprising: at least one first CS and at least one second CS, where the at least one second CS is different from the at least one first CS. Further, the terminal device transmits, to a network device and based on the at least one first CS and the at least one second CS, the SRS transmission over a comb-structure resource with a comb value of eight. In this way, the peak to average power ratio (PAPR) performance is improved.

Abstract: Embodiments of the present disclosure relate to methods, devices, and computer readable medium for communication. According to some embodiments, a method comprises determining, at a terminal device, that a negative acknowledgment (NACK) feedback is to be transmitted for at least one of a set of transport blocks (TBs) transmitted from a network device; selecting, from a mapping table associated with the set of TBs, a cyclic shift value mapped to a combination of the at least one TB; generating a sequence at least based on the selected cyclic shift value; and transmitting, to the network device, the NACK feedback for the at least one TB using the generated sequence.

Abstract: Embodiments of the present disclosure relate to methods, devices and computer readable media of communication. A terminal device receives, from a network device, a first configuration information transmitted on a first cell, wherein the first configuration information includes a set of TCI states, and the set of TCI states is associated with a second cell different from the first cell. The terminal device receives a first activation command to activate one or more TCI states, wherein the one or more TCI states comprise at least one TCI state from the set of TCI states. The terminal device applies the one or more activated TCI states from a first slot after a predefined timing. In this way, a beam for the second cell can be indicated according to the TCI state indicated by the first cell before serving cell change; accordingly, the latency, the overhead and the interruption time during the inter-cell mobility can be reduced.

Abstract: Embodiments of the present disclosure relate to methods, devices and computer readable mediums for beam management. In example embodiments, a method implemented at a first network device is provided. According to the method, a first group of resources are determined to be used by a terminal device for determining a first group of beams from the first network device. The first group of resources are different from a second group of resources configured by a second network device to the terminal device for determining a second group of beams from the second network device. The first group of resources are configured to the terminal device. A plurality of synchronization and/or reference signals are transmitted, using the first group of beams, on the first group of resources to the terminal device.

Abstract: Embodiments of the present disclosure relate to methods, devices and computer storage media for communication. A method comprises transmitting, from a first device to a second device, a plurality of repetitions for a physical channel for scheduling a communication between the first device and the second device, wherein the plurality of PDCCH repetitions indicate same offset information for the communication; determining, based on the same offset information and index information about a repetition of the plurality of repetitions, a time offset between the repetition and the communication; and performing, based on the time offset, the communication with the second device. Embodiments of the present disclosure enable both the network device and the terminal device to obtain, from the physical channel repetitions, the real time offset for a corresponding communication and improve reliability and robustness for the physical channel.

Abstract: Embodiments of the present disclosure relate to methods, devices and computer storage media for communication. According to embodiments of the present disclosure, a terminal device transmits, to a network device, a first hybrid automatic repeat request acknowledgement (HARQ-ACK) information corresponding to a first downlink control information (DCI) in a first physical downlink control channel (PDCCH), wherein the first DCI indicates a first transmission configuration indicator (TCI) state. If a condition is fulfilled, the terminal device applies the first TCI state. In this way, the terminal device understands when and/or whether to apply the indicated TCI state.

Abstract: Embodiments of the present disclosure relate to methods and apparatuses of synchronization signal transmission and receiving in a wireless communication system. The method of synchronization signal transmission in a wireless communication system may comprise transmitting a signal set containing one or more synchronization signals, wherein the one or more synchronization signals are transmitted in a predetermined signal transmission pattern within a signal transmission period, and wherein the predetermined signal transmission pattern indicates information on synchronization signal transmission. With embodiments of the present disclosure, it may indicate the information on synchronization signal transmission information by means of the signal transmission mode. Thus, especially for an initial access process, it can provide a common frame for both single beam based deployment and multi-beam based deployment.

Abstract: A method at a base station for performing data transmission to a user equipment in a communications system supporting carrier aggregation of at least one first carrier on which a short TTI is applied and at least one second carrier on which a long TTI is applied. The method transmits at least one DL scheduling grant corresponding to data transmission to the user equipment in a DL control region of at least one of a short TTI on a first carrier and a long TTI on a second carrier and performs DL data transmission towards the user equipment in a data transmission region of a short TTI on the first carrier and in the data transmission region of a long TTI on the second carrier as indicated by the at least one DL scheduling grant.

Abstract: Embodiments of the present disclosure relate to a method, device and computer readable storage medium of communication. The method comprises receiving, at a terminal device deployed with a plurality of sets of antenna ports, a downlink control information (DCI) message for scheduling at least one uplink transmission over at least two of the plurality of sets of antenna ports, the DCI message indicating: first information about sounding reference signal (SRS) resources associated with the at least one uplink transmission, second information about the precoding information associated with the at least one uplink transmission and third information indicating a transmission mode of the at least one uplink transmission; and transmitting, based on the DCI message, the at least one uplink transmission over the at least two of the plurality of sets of antenna ports to a network. In this way, a simultaneous transmission across multi-panels is well supported.

Abstract: Embodiments of the present invention disclose methods, devices, and computer readable medium for communication. According to embodiments of the present disclosure, a terminal device reports one or more capabilities of the terminal device to a network device. The one or more capabilities indicate that the terminal device supports an artificial intelligent/machine learning (AI/ML) model. The terminal device receives an indication which triggers a channel state information (CSI) report for the AI/ML model from the network device. The terminal device measures a set of reference signals for the CSI report. In this way, the AI/ML model can be trained to improve accuracy of the beam management.

Abstract: Embodiments of the present disclosure provide a method, a device and a computer readable medium for communication based on a multi-TRP codebook. According to a method for communication, a terminal device measures downlink channel conditions related to a plurality of network devices in communication with the terminal device. The terminal device selects a precoding matrix from a codebook based on the downlink channel conditions, elements in a column of the codebook represent respective beam sets for the plurality of network devices, and the precoding matrix indicates respective beams for the plurality of network devices. The terminal device transmits an index of the precoding matrix to at least one of the plurality of network devices. The embodiments of the present disclosure enable multi-TRP PMI feedback based on the proposed multi-TRP codebook.

Abstract: Embodiments of the present disclosure relate to methods, devices and computer storage media for communication. According to this solution, a terminal device detects a beam failure on a first component carrier (CC). The terminal device applies at least one ne quasi co-location (QCL) parameters as the ones associated with a first reference signal for downlink reception on the first CC until a first timing, or applies a spatial domain filter as the one associated with the first reference signal or as for a physical random access channel (PRACH) transmission for uplink transmission on the first CC until the first timing. In this way, the failed CC can still be under control of common beam update/activation.

Abstract: Example embodiments of the present disclosure relate to an effective mechanism for handling the panel-related information. In this solution, the terminal device transmits a correspondence report to a network device, where the correspondence report indicates a first correspondence between at least one first capability value set and at least one first RS. The terminal device further communicates with the network device according to a feedback state of the correspondence report, where the feedback state is an ACK or a NACK. In this way, the misalignment between the network device and the terminal device is avoided.

Abstract: Example embodiments of the present disclosure relate to an effective mechanism for processing the CSI reports. In this solution, the terminal device determines a first priority value for a first channel state information (CSI) report at least in part based on an association relationship between the first CSI report and a set of capability parameters and further transmits the CSI report to a network device based on the determined priority value. In this way, a feasibly solution for calculating priority value is achieved, which may be satisfy requirements of different scenarios.

Abstract: Embodiments of the present disclosure relate to a method, device and computer readable storage medium of communication. The method comprises determining, at a terminal device, an uplink resource for at least one uplink transmission. The method further comprises performing, the at least one uplink transmission based on one TCI state or more than one transmission configuration indicator (TCI) state based on at least one of the following: a number of TCI states associated with the uplink resource, or a number of uplink resource sets associated with the uplink resource, each uplink resource set corresponding to a TCI state. In this way, the multi-TRP based physical uplink control channel (PUCCH) transmission is enabled.

Abstract: A charging circuit includes at least two direct current-direct current (DC-DC) conversion circuits coupled between a power supply end and a charging end of the charging circuit. A voltage input end of the DC-DC conversion circuit is coupled to the power supply end, and a voltage output end of the DC-DC conversion circuit is coupled to the charging end. The at least two DC-DC conversion circuits include a first DC-DC conversion circuit and a second DC-DC conversion circuit. The first DC-DC conversion circuit is configured to perform voltage conversion on a voltage at the power supply end, to output a first charging signal to the battery. The second DC-DC conversion circuit is configured to perform voltage conversion on the voltage at the power supply end to output a second charging signal to the battery.

Abstract: A method at a base station for performing data transmission to a user equipment in a communications system supporting carrier aggregation of at least one first carrier on which a short TTI is applied and at least one second carrier on which a long TTI is applied. The method transmits at least one DL scheduling grant corresponding to data transmission to the user equipment in a DL control region of at least one of a short TTI on a first carrier and a long TTI on a second carrier and performs DL data transmission towards the user equipment in a data transmission region of a short TTI on the first carrier and in the data transmission region of a long TTI on the second carrier as indicated by the at least one DL scheduling grant.

Abstract: Embodiments of the present disclosure relate to methods, devices and computer readable media for communications. A method implemented at a terminal device comprises in response to switching to a second frequency part, determining a time duration for the terminal device to use a first reference signal received from a network device in a first frequency part as a Quasi Co-location (QCL) reference signal. The terminal device performs communication with the network device before the time duration ends based on a first set of properties obtained by measuring at least the first reference signal. The method also comprises obtaining, within the time duration, a second set of properties by measuring at least a second reference signal received from the network device in the second frequency part, the second reference signal and the first reference signal having a first identification.

Abstract: Embodiments of the present disclosure relate to methods, devices and computer storage media for communication. A method comprises receiving, at a terminal device, from a network device, at least one configuration for a first list of cells, wherein the first list of cells comprises a first cell and a second list of cells, and at least a first spatial reception parameter of the second list of cells refers to the first cell based on the at least one configuration; and performing a first beam failure recovery procedure on the first list of cells; or performing the first beam failure recovery procedure on the first cell, and performing a second beam failure recovery procedure on the second list of cells, wherein the second beam failure recovery procedure is same with or related to the first beam failure recovery procedure.

Abstract: According to embodiments, solutions on asynchronous MTRP transmission are proposed. A terminal device receives a first configuration from a network device. The first configuration indicates a time offset between a first transmission reception point (TRP) and a second TRP. The terminal device is able to support asynchronous multi-TRP (MTRP) transmissions from the first and second TRPs. The terminal device synchronizes with the first TRP. The terminal device performs at least one of: downlink reception or uplink transmission with the second TRP based on the time offset. In this way, it can align frame timing, slot boundary or symbol boundary at the terminal device.