A processing method of direct communication, a processing device of direct communication, a relay terminal and a remote terminal are provided. The method includes: receiving a direct communication request message sent by a remote terminal, where the direct communication request message includes: a flow identification of a first QoS flow requested to be established and a QoS parameter of the first QoS flow; the first QoS flow is a QoS flow on a direct communication interface between the remote terminal and the relay terminal; and sending a direct communication response message to the remote terminal, where the direct communication response message is configured to indicate that an establishment of the first QoS flow is finished.

Apparatus and methods are provided for path switch with service continuity for the UE from the indirect relay link to direct cell link or vice versa. In one novel aspect, the UE is configured with measurement report configuration, which includes triggering event for sending the measurement report. The network sends path switch command to the UE to initiate the path switch based on the measurement report. The UE path switch includes intra-gNB and inter-gNB path switch between the indirect relay link and the direct cellular link. The triggering events are a measurement of the target direct Uu link is an offset better than a measurement of the serving sidelink for a indirect link to direct link switch and a measurement of the PC5 link is better than a predefined threshold for direct link to indirect link switch.

The embodiments of the disclosure provide a data transmission method and apparatus, a parameter adjustment method and apparatus, and a terminal device. The data transmission method comprises: a first terminal device acquiring first discontinuous reception (DRX) configuration information, the first DRX configuration information being used for determining a continuously monitoring duration of a second terminal device, and the first terminal device sending the sidelink data to the second terminal device within the continuously monitoring duration of the second terminal device.

Various aspects of the present disclosure generally relate to wireless communication. In some aspects, a user equipment (UE) may receive, from a transmit UE, a sidelink wake-up signal (WUS) that indicates the UE is to monitor a first subset of resources, of a set of resources, for sidelink control information (SCI) from the transmit UE, the set of resources being associated with an active monitoring state of a discontinuous reception (DRX) cycle. The UE may monitor the first subset of resources for the SCI. The UE may sense for signals associated with a sidelink control signal, the sidelink control signal being associated with at least one other UE, using a second subset of resources, of the set of resources. Numerous other aspects are described.

A method and device are disclosed for a relay User Equipment (UE). In one embodiment, the relay UE establishes a first layer-2 link with a first remote UE. The relay UE also establishes a Protocol Data Unit (PDU) session with a network, wherein the relay UE forwards traffic of the first remote UE on the PDU session. The relay UE further establishes a second layer-2 link with a second remote UE. In addition, the relay UE forwards traffic of the second remote UE on the PDU session. Furthermore, the relay UE receives a network control signaling from the network, wherein the network control signaling is associated with the first remote UE and is used for modifying the PDU session. The relay UE also initiates a layer-2 link modification procedure toward the first remote UE in response to reception of the network control signaling.

Methods, systems, and devices for wireless communications are described. A first user equipment (UE) may receive a message indicating a configuration for a first active duration for the first UE, the first active duration being for a reversed communication direction during an active duration of a first discontinuous cycle for sidelink communications. The first UE may transmit a sidelink signal to the second UE, and may activate the first time active duration during the active duration of the first discontinuous cycle. Upon activating the first active duration, the first UE may switch from a transmission mode to a reception mode, and may receive a sidelink response message from the second UE during the first active duration. Based on receiving the sidelink response message, the first UE may switch back to the transmission mode to the reception mode during the first active duration, and may terminate the first active duration.

Suggested is a novel condition for a media access control (MAC) entity in user equipment (UE) reselecting a sidelink resource in a wireless communication system. The MAC entity of the UE can reselect a sidelink resource when a configured sidelink grant does not satisfy a latency requirement according to ProSe per-packet priority (PPPP). More particularly, configuration is performed by an upper layer so that the MAC entity transmits on the basis of sensing using a resource pool; the MAC entity selects generation of a configured sidelink grant corresponding to transmission of a plurality of MAC protocol data units (PDU); and when data is available in a sidelink traffic channel (STCH) and the configured sidelink grant does not satisfy the latency requirement according to the PPPP, a sidelink resource is reselected.

Embodiments of the present disclosure provide an information determination method, apparatus, device, and computer-readable storage medium. The method includes: obtaining a sidelink channel measurement result, and determining a timer length of a target DRX timer according to the sidelink channel measurement result; or receiving indication information from a second terminal and determining the timer length of the target DRX timer according the indication information from the second terminal; the indication information being used to indicate the timer length of the target DRX timer; wherein the first terminal communicates with the second terminal through a sidelink.

A method and apparatus for transmitting and receiving sidelink feedback information. The method includes: receiving, by a terminal equipment, DCI with CRC being scrambled by a SL-RNTI or a SL-CS-RNTI; generating first indication information used for indicating that the first sidelink transmission is successful or that a network device is not needed to schedule retransmission, wherein the first sidelink transmission is not performed on the dynamic grant resource scheduled by the DCI, and a priority of the first indication information is preconfigured; and transmitting the first indication information via a first PUCCH indicated by the DCI.

The present disclosure relates to a communication method and system for converging a 5th-Generation (5G) communication system for supporting higher data rates beyond a 4th-Generation (4G) system with a technology for Internet of Things (IoT). The present disclosure may be applied to intelligent services based on the 5G communication technology and the IoT-related technology, such as smart home, smart building, smart city, smart car, connected car, health care, digital education, smart retail, security and safety services. According to the embodiments of the present disclosure, various methods by which the 5G system is able to dynamically determine the appropriate UP path to exchange interactive service data either via the ProSe Communication path (direct) or via the 5GC path are provided. Also, according to the embodiments of the present disclosure, a method of addressing shortcomings in a discovery procedure related to the formation and management of such NCIS groups is provided.