The embodiment of the invention provides a data transmission method, user equipment and a control node, relates to the technical field of communication, and aims to solve the problem that sidelink feedback transmission cannot be realized in a carrier aggregation scene in a traditional sidelink transmission process The method comprises the following steps: in a carrier aggregation scene, accordingto scheduling information, transmitting sidelink data on a data carrier, and transmitting feedback data on a feedback carrier; wherein the scheduling information is used for scheduling a data carrierand/or a feedback carrier; wherein the feedback data is used for indicating a transmission result of the sidelink data The method is specifically applied to a unicast, multicast or broadcast sidelink data transmission process in a carrier aggregation scene

Data transmission method, user equipment and control node

Embodiments include methods for operating a user equipment (UE) in a non-terrestrial network (NTN) that utilizes one or more polarization modes for serving one or more cells. Such methods include sending, to a network node, an indication of one or more polarization capabilities of the UE. Such methods also include transmitting and/or receiving one or more signals or channels in a first cell of the NTN according to the indicated polarization capabilities of the UE. In some embodiments, the indicated polarization capabilities of the UE include: a UE type; one or more polarization modes supported by the UE; a polarization correspondence between uplink and downlink signals that is supported by the UE; and/or a list of antenna panels supported by the UE and polarization modes supported by the antenna panels. Other embodiments include complementary methods for operating network nodes, and UEs and network nodes configured to perform such methods.

Methods for indicating polarization capabilities of user equipment in a non-terrestrial network (ntn)

Disclosed are a method and an apparatus for transmitting and receiving HARQ responses in a communication system supporting sidelink communication. The method of operating a transmitting terminal comprises the steps of: receiving, from a base station, a higher layer signaling message including PSFCH configuration information; transmitting, to a plurality of receiving terminals, SCI including resource allocation information of data and configuration information for HARQ feedback for the data; transmitting the data to the plurality of receiving terminals in a PSSCH indicated by the SCI; and performing a monitoring operation to receive, from the plurality of receiving terminals, sequences mapped to HARQ responses for the data in a PSFCH resource region indicated by the PSFCH configuration information. Therefore, the performance of a communication system can be improved.

Method and apparatus for transmitting and receiving harq response in communication system supporting sidelink communication

Communication devices are provided that facilitate receiving information units and providing feedback to other communication devices.

Communication device, system and method for communication using feedback

A user equipment transmits data to a receiver of a wireless communication system using resources of a channel granted by the receiver, the channel having a certain channel condition estimated by the receiver. The user equipment is preconfigured with one or more retransmission resources to be used for the retransmission, and, responsive to a change of the channel condition, the user equipment signals to the receiver, together with the data transmission, a retransmission indicating that a retransmission for the data is transmitted, and transmits the retransmission using one or more of the retransmission resources.

Data retransmission mechanism in terrestrial or non-terrestrial networks exhibiting a high propagation delay

The embodiments herein relate to a method performed by UE, a UE (300), a network node or gNB (400) and a method performed by the gNB (400) for handling retransmissions in a wireless telecommunications system and resolving misalignment between the UE (300) and the gNB (400). According to exemplary embodiments, there is provided a retransmission counter placed or implemented at the UE and/or the gNB which is configured to count every failing data packet (i.e., the receiver(s)/transmitters is/are informed via the NACK messages or the NACK timers). There is also provided a retransmission assignment indicator message configured to comprise, fully or partially: the content of said counter and the content or the structure of the CGB (Code Block Group), e.g., either all CBGs are retransmission versions or part of the CGBs are retransmission versions.

Methods and apparatuses for handling retransmissions in a wireless telecommunications system

An apparatus for a wireless communication system is described. The wireless communication system includes one or more UEs and a plurality of cells. A UE entering into a predefined handover event measures a channel condition of one or more neighboring cells for a predefined time, e.g., the time to trigger, TTT. The apparatus adapts the TTT based on one or more channel conditions of the one or more neighboring cells.

Time to trigger and conditional handover enhancements

An apparatus for a wireless communication system uses a plurality of frequency bands for a communication with one or more network entities, e.g., one or more user devices or one or more base stations, in the wireless communication system. The apparatus receives from a transmitter or the one or more network entities a transport block, TB, the TB being split into a plurality of code block groups, CBGs, each CBG including one or more code blocks, CBs, and being confined to one of the plurality of frequency bands. The apparatus provides or predicts a feedback for each of the CBGs indicating one or more of a successful receipt of the CBG, a non-successful receipt of the CBG, no need for redundancy for the CBG and a need for some redundancy for the CBG, amount of additional redundancy needed, e.g., a hybrid automatic repeat request, HARQ, feedback. The apparatus compresses the feedbacks and/or the predicted feedbacks for each of the CBGs into a compressed feedback based on an interference pattern on one or more of the frequency bands which is detectable at the apparatus and the transmitter or the one or more network entities, e.g. Listen-before-Talk, LBT, failure, and to transmit to the one or more of the network entities the compressed feedback.

Enhancements for cbg-based harq feedback and overhead reduction in new radio

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