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 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.

Abstract: Embodiments of the present disclosure relate to methods, devices and computer readable media for Reference Signal (RS) transmission. A method for communication comprises determining one or more RS ports for RS transmission, the one or more RS ports being included in one or more RS groups. The method further comprises determining a plurality of parameters for generating a RS sequence specific to a RS group in the one or more RS groups, the RS group including at least one of the one or more RS ports. The method further comprises generating the RS sequence based on the plurality of parameters. In addition, the method further comprises transmitting the generated RS sequence over the at least one of the one or more RS ports. The embodiments of the present disclosure can solve the PAPR issue caused by mapping a same RS sequence to antenna ports across RS port groups.

Abstract: Embodiments of the present disclosure relate to methods and devices for reference signal (RS) transmission. In example embodiments, a method implemented in a network device is provided. According to the method, a first set of RS resources are determined for RS transmission by the network device. The first set of RS resources are associated with a first number of RS ports to be used for RS transmission and correspond to a first set of resource elements (REs) interpolated with unused REs in frequency domain. A first RS configuration for RS transmission is generated based on the first set of RS resources. Information on the first RS configuration is transmitted to a terminal device served by the network device.

Abstract: Embodiments of the present disclosure relate to methods, devices and computer readable media for communication. A terminal device receives an indication of a first transmission configuration indicator (TCI) state, wherein at least one reference signal (RS) in the first TCI state is associated with a first physical cell identity (ID), and the terminal device monitors a first physical downlink control channel (PDCCH) in a first monitoring occasion for a first search space based on a second TCI state or based on a quasi co-location (QCL), wherein at least one RS in the second TCI state and the QCL assumption is associated with a second physical cell ID; and the terminal device monitors a second PDCCH in a second monitoring occasion for a second search space based on a condition.

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, a first set of reference signals (RSs) and a second set of RSs; receiving, one or more configurations of a first timer and a second timer; performing a beam failure detection related to a first procedure based on the first set and the first timer, performing a beam failure detection related to a second procedure based on the second set and the second timer; and performing a third procedure based on a first condition and/or a first parameter related to at least one of the first procedure and the second procedure.

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 and from a network device, downlink control information (DCI) for scheduling a Physical Uplink Shared Channel (PUSCH) transmission, the DCI comprising: a first field indicating a first number of layers for the PUSCH transmission; and a second field indicating a second number of layers for the PUSCH transmission; determining power for the PUSCH transmission based on the first number and the second number, and transmitting, to the network device, the PUSCH transmission based on the DCI, wherein a total number of layers for the PUSCH transmission is determined based on a sum of the first number and the second number. In this way, number of layers and power for PUSCH transmission can be determined.

Abstract: Embodiments of the present disclosure relate to methods, devices and computer readable media for communication. A method of communication comprises receiving, at a first device, control information from a second device; determining a transmission control indication (TCI) codepoint from the control information, the TCI codepoint indicating at least a first TCI state and a second TCI state to be used for communicating data with the second device over a physical shared channel; in response to a number of repetitions of the data being configured to be scheduled by the control information, determining a first configuration for communicating the repetitions of the data with the second device, the first configuration assigning the first and second TCI states to the repetitions of the data; and communicating, at least based on the first configuration, the repetitions of the data with the second device over the physical shared channel.

Abstract: Embodiments of the present disclosure relate to methods, devices and computer readable media for communication. A terminal device receives an indication of at least one transmission configuration indicator (TCI) state in a detected downlink control information (DCI) in a first physical downlink control channel (PDCCH). The terminal device also receives a downlink transmission from the network device based on the at least one TCI state based on a first condition. The terminal device further applies the at least one TCI state to at least one reference signal (RS) in a first RS set based on the first condition, wherein the first RS set is applied for beam failure detection. Moreover, the terminal device determines an estimation of a radio link quality between the terminal device and the network device based on the first RS set. In this way, proper beam failure detection can be processed.

Abstract: Embodiments of the present disclosure relate to methods, devices and computer readable media for Reference Signal (RS) transmission. A method for communication comprises determining one or more RS ports for RS transmission, the one or more RS ports being included in one or more RS groups. The method further comprises determining a plurality of parameters for generating a RS sequence specific to a RS group in the one or more RS groups, the RS group including at least one of the one or more RS ports. The method further comprises generating the RS sequence based on the plurality of parameters. In addition, the method further comprises transmitting the generated RS sequence over the at least one of the one or more RS ports. The embodiments of the present disclosure can solve the PAPR issue caused by mapping a same RS sequence to antenna ports across RS port groups.

Abstract: Embodiments of the present disclosure relate to methods, devices and computer readable media for communication. According to embodiments of the present disclosure, a terminal device receives, from a network device, a radio resource control (RRC) configuration comprising a repetition number for physical uplink shared channel (PUSCH) transmission occasions associated with a first sounding reference signal (SRS) resource indicator (SRI) and PUSCH transmission occasions associated with a second SRI, the RRC configuration further comprising a redundancy version (RV) offset to a RV sequence associated with the first SRI. The terminal device receives DCI indicating an identity of a RV. If a first RV sequence determined based on the repetition number, the identity and the RV offset meets a condition, the terminal device does not apply the first RV sequence. In this way, it improves reliability.