Provided are a path switching method and a terminal device. The terminal device has a packet data convergence protocol (PDCP) layer, the PDCP layer being able to send uplink data to a first cell group or a second cell group, the first cell group and the second cell group being different cell groups, the PDCP layer currently sending the uplink data to the first cell group; the method comprises: the terminal device enabling the switching of the PDCP layer from sending the uplink data to the first cell group, to sending the uplink data to the second cell group; and the terminal device sending first uplink data to the second cell group, the first uplink data at least including first data, the first data referring to the data that the terminal device has sent to a radio link control protocol (RLC) layer of the first cell group.

A wireless device receives configuration parameters of: one or more first cells in a first frequency band; and one or more second cells in a second frequency band. A calculated total transmit power for a plurality of signals is determined. The calculated total transmit power comprises a first SRS configured for transmission, during a time interval, via the one or more first cells. The calculated total transmit power comprises a second SRS configured for transmission, during the time interval, via the one or more second cells. A transmission of the first SRS is dropped or scaled, based on an SRS transmit power priority of the first SRS, when the calculated total transmit power exceeds a first value. The SRS transmit power priority is based on a frequency band of the one or more first cells.

Aspects described herein relate to communicating in a wireless network based on a configured set of one or more transmission points (TRPs), receiving an instruction to modify the set of one or more TRPs, modifying, based on the instruction, the set of one or more TRPs to generate a modified set of one or more TRPs, and communicating in the wireless network based on the modified set of one or more TRPs.

Aspects of the present disclosure provide various procedures and methods for accelerated secondary cell (SCell) activation when carrier aggregation (CA) is configured. A scheduling entity receives, from a network entity, an indication of anticipated data for a user equipment (UE) in an idle mode. The scheduling entity determines supplemental wake-up information based on the carrier aggregation capability of the PCell. The scheduling entity transmits a wake-up message to the UE. The wake up message is configured to cause the UE to wake up in a CA configuration using the PCell and one or more SCells, based on the supplemental wakeup information.

The present disclosure provides a method used in User Equipment (UE). The UE is configured with a Master Cell Group (MCG) duplicated Signaling Radio Bearer (SRB). The MCG duplicated SRB is associated with an MCG and a Secondary Cell Group (SCG) and configured to be used for uplink transmission via the SCG. The method comprises: detecting an SCG failure; and reconfiguring the MCG duplicated SRB to be used for uplink transmission via the MCG, or triggering an MCG failure.

Provided is a high-speed communication system with high reliability and low latency, etc., under New Radio (NR). A communication system includes a communication terminal device, and a base station device configured to perform radio communication with the communication terminal device. The communication terminal device is configured to duplicate a packet and transmit the duplicated packets with carrier aggregation. The base station device is configured to transmit, to the communication terminal device, packet duplication control on packet duplication and secondary cell control on a secondary cell to be used for the carrier aggregation. The communication terminal device is configured to perform the packet duplication control and the secondary cell control based on priorities defined between the packet duplication control and the secondary cell control.

A communication device for handling dual cellular system aggregation includes a storage device for storing instructions and a processing circuit coupled to the storage device. The communication device connects to a network via a first radio access technology (RAT); transmitting a first RAT-second RAT joint aggregation capability and at least one of a first RAT sole aggregation capability and a second RAT sole aggregation capability to the network; receiving a second RAT configuration configuring a first RAT-second RAT joint aggregation; connecting to the network via a second RAT according to the second RAT configuration; and receiving a first data via the first RAT and a second data via the second RAT, after connecting to the network via both of the first RAT and the second RAT.

For switching between packet duplication operating modes, methods, apparatus, and systems are disclosed. One apparatus includes a processor and a transceiver that communicates with a mobile communication network via a radio bearer. The processor determines whether PDCP packet duplication associated with the PDCP protocol entity is to be activated and, if so, communicates with a mobile communication network according to a packet duplication mode of operation. Otherwise, the processor determines whether a split threshold value of the PDCP protocol entity is set to a predefined value, communicates with the mobile communication network according to a first split bearer mode of operation in response to determining that the split threshold value is set to the predefined value, and communicates with the mobile communication network according to a second split bearer mode of operation in response to determining that the split threshold value is not set to the predefined value.

Performing carrier aggregation for high-powered wireless devices that may cause interference to other wireless devices includes determining that a wireless device attached to an access node is assigned to a high power class and capable of operating in a carrier aggregation mode, initiating the carrier aggregation mode for the wireless device, and instructing the access node to utilize a frequency-division-duplexing (FDD) carrier deployed by the access node as a primary carrier for the wireless device. A handover of the wireless device to the FDD carrier may be triggered by a threshold level of interference caused by uplink transmissions from the wireless device when operating in the high-powered transmission mode on a TDD carrier.

Embodiments of the present disclosure disclose a link failure recovery method and apparatus. The method includes: first receiving, by a primary base station, failure report information sent by a user equipment, acquiring, according to the failure report information, an identifier of a data radio bearer (DRB) that needs to be reconfigured, and reconfiguring a parameter for the DRB that needs to be reconfigured; and then sending, by the primary base station, a first reconfiguration message to the user equipment, so that the user equipment reconfigures a failed DRB according to the first reconfiguration message. The present disclosure is applicable to the field of communications systems.