A terminal according to an aspect of the present disclosure includes: a receiving section that receives information relating to a physical downlink shared channel (PDSCH); and a control section that uses, when medium access control (MAC) control element (CE) is indicated and the information satisfies an applicable condition, a specific transmission configuration indication (TCI) state based on the MAC CE for receiving the PDSCH instead of a TCI state indicated for the PDSCH. According to an aspect of the present disclosure, QCL parameters can be appropriately determined.

A terminal according to an aspect of the present disclosure includes: a receiving section that receives information relating to a physical downlink shared channel (PDSCH); and a control section that uses, when medium access control (MAC) control element (CE) is indicated and the information satisfies an applicable condition, a specific transmission configuration indication (TCI) state based on the MAC CE for receiving the PDSCH instead of a TCI state indicated for the PDSCH. According to an aspect of the present disclosure, QCL parameters can be appropriately determined.

Aspects of the present disclosure relate to wireless communications, and more particularly, to mechanisms for maintaining timing alignment between a user equipment (UE) and a secondary cell group (SCG), which may help the UE may quick and efficient transitions from a dormant or de-active state in the SCG to an active state.

Aspects of the present disclosure relate to wireless communications, and more particularly, to mechanisms for maintaining timing alignment between a user equipment (UE) and a secondary cell group (SCG), which may help the UE may quick and efficient transitions from a dormant or de-active state in the SCG to an active state.

A User Equipment is disclosed that determines a default Transmission Configuration Indicator (TCI) state in a wireless communication network in a High-Speed Train environment. The UE determines that wireless communication is being carried out in Frequency Range 2 and receives one or more Core Resource Sets (CORESETs) carrying a Physical Downlink Control Channel (PDCCH) with a Downlink Control Information (DCI); that a time offset between reception by the UE of the DCI and a corresponding Physical Downlink Shared Channel (PDSCH) is less than a predetermined time threshold; that the PDSCH is configured with a Single Frequency Network (SFN) scheme; that an option to enable two default TCI states for the UE is not configured; whether the PDCCH is configured with an SFN scheme; and based on a result of determining whether the PDCCH is configured with an SFN scheme, a default TCI state is determined for PDSCH reception.

A User Equipment is disclosed that determines a default Transmission Configuration Indicator (TCI) state in a wireless communication network in a High-Speed Train environment. The UE determines that wireless communication is being carried out in Frequency Range 2 and receives one or more Core Resource Sets (CORESETs) carrying a Physical Downlink Control Channel (PDCCH) with a Downlink Control Information (DCI); that a time offset between reception by the UE of the DCI and a corresponding Physical Downlink Shared Channel (PDSCH) is less than a predetermined time threshold; that the PDSCH is configured with a Single Frequency Network (SFN) scheme; that an option to enable two default TCI states for the UE is not configured; whether the PDCCH is configured with an SFN scheme; and based on a result of determining whether the PDCCH is configured with an SFN scheme, a default TCI state is determined for PDSCH reception.

Disclosed are a communication technique which merges, with IoT technology, a 5G communication system for supporting a data transmission rate higher than that of a 4G system, and a system therefor. The present disclosure can be applied to intelligent services (for example, smart homes, smart buildings, smart cities, smart cars or connected cars, healthcare, digital education, retail businesses, security- and safety-related services, and the like) on the basis of 5G communication technology and IoT-related technology.

Disclosed are a communication technique which merges, with IoT technology, a 5G communication system for supporting a data transmission rate higher than that of a 4G system, and a system therefor. The present disclosure can be applied to intelligent services (for example, smart homes, smart buildings, smart cities, smart cars or connected cars, healthcare, digital education, retail businesses, security- and safety-related services, and the like) on the basis of 5G communication technology and IoT-related technology.

Provided are an indication method and apparatus, an uplink transmission method and apparatus, a serving node, a terminal device and a non-transitory computer-readable storage medium. The indication method is applicable to a serving node, and may includes transmitting indication information configured to indicate a resource configuration for uplink transmission, and receiving uplink control information transmitted by a terminal device.

Provided is a method by a user equipment (UE), comprising: receiving one or more messages comprising sounding reference signal (SRS) configuration information from a based station (BS), the SRS configuration information comprises a partial frequency sounding indicator and additional information associated with the partial frequency sounding indicator, and determines SRS resource allocation; and sending a SRS to the BS in accordance with the SRS configuration information.