Abstract: In an aspect of the disclosure, a method, a computer-readable medium, and an apparatus are provided. The apparatus may be a first UE. In certain configurations, the first UE operates in an idle or inactive protocol state in a service of a first cell and performs a discovery procedure with a second UE, wherein the discovery procedure includes indicating, to the second UE, an identity of the first cell. The first UE further performs a cell reselection procedure to a second cell, receives, from the second UE, subsequent to the performing the cell reselection procedure, a message for forwarding to the first cell, and sends, to the second UE, a notification message, wherein the notification message includes an indication of an inability to forward the message.

Abstract: A User Equipment (UE) including a wireless transceiver and a controller is provided. The wireless transceiver performs wireless transmission and reception to and from one or more peer UEs. The controller determines a Sidelink (SL) Discontinuous Reception (DRX) configuration set, and applies the SL DRX configuration set to enable a DRX operation for SL communications with the peer UEs via the wireless transceiver; wherein the SL DRX configuration set is determined based on one of the following: one or more types of one or more SL services which the UE is participating with the peer UEs; one or more SL DRX configurations received from the peer UEs; and control information received from a Base Station (BS).

Abstract: A data processing method, a terminal device, and a base station are disclosed. The method includes: determining to change a type of at least one radio bearer of the terminal device from a first type to a second type; discarding a radio link control protocol RLC protocol data unit and/or an RLC service data unit buffered by a transmit side of an RLC layer entity of the at least one radio bearer; and assembling an RLC protocol data unit received by a receive side of the RLC layer entity of the at least one radio bearer into an RLC service data unit, and delivering the RLC service data unit in sequence to an upper layer entity of the RLC layer entity, where the upper layer entity is an upper layer entity of the RLC layer entity before the type of the at least one radio bearer is changed.

Abstract: An indication method, including receiving, by first user equipment, a first message sent by second user equipment, where the first message includes information indicating that the second user equipment supports an evolved user equipment-to-network relay function, and receiving, by the first user equipment, a second message sent by a network device, where the second message includes information indicating that the network device supports an evolved user equipment-to-network relay, or the second message includes information indicating that a cell in which the network device sends the second message supports an evolved user equipment-to-network relay.

Abstract: Aspects of the disclosure provide a method for a first user equipment (UE) that has a first path to a network to add a second path to the network. For example, the method can include receiving, at the first UE, a first radio resource control (RRC) message from the network for addition of the second path. The method can also include configuring, by the first UE, the second path based on the first RRC message.

Abstract: Aspects of the disclosure provide methods and apparatuses for wireless communication. In some embodiments, a first mobile device can receive a first indication of a first transmit activity pattern associated with a second mobile device that transmits data to the first mobile device via a radio interface without passing through a base station. The first mobile device can compute a first receive activity pattern that is inclusive of at least the first transmit activity pattern. The first mobile device monitors the radio interface according to the first receive activity pattern.

Abstract: A system and method of communicating sounding reference signals (SRSs) in a cellular time division duplex (TDD) mmWave system. A transmission point (TP) may transmit beamformed reference signals to a user equipment (UE), each of the beamformed reference signals having been transmitted according to a beam direction in a set of beam directions available to the TP. The TP may receive a feedback message from the UE that identifies one of the beamformed reference signals transmitted to the UE. The TP may select, from the set of beam directions available to the TP, a subset of beam directions for SRS reception based on the feedback message received from the UE, and receive uplink SRS signals according to beam directions in the subset of beam directions. The set of beam directions available to the TP includes at least one beam direction that is excluded from the subset of beam directions.

Abstract: A User Equipment (UE) including a wireless transceiver and a controller is provided. The wireless transceiver performs wireless transmission and reception to and from one or more peer UEs. The controller determines a Sidelink (SL) Discontinuous Reception (DRX) configuration set, and applies the SL DRX configuration set to enable a DRX operation for SL communications with the peer UEs via the wireless transceiver; wherein the SL DRX configuration set is determined based on one of the following: one or more types of one or more SL services which the UE is participating with the peer UEs; one or more SL DRX configurations received from the peer UEs; and control information received from a Base Station (BS).

Abstract: A service data transmission method, user equipment, and a network device are provided. The method includes: determining, by a network device, a control message used to indicate at least two SPS configurations, and sending the control message to user equipment; and receiving, by the user equipment, the control message sent by the network device, and activating the at least two SPS configurations based on the control message, where each of the at least two activated SPS configurations is used to transmit corresponding service data. In embodiments of the present invention, at least two SPS configurations can be simultaneously performed, thereby improving service data transmission efficiency.

Abstract: A method executed by a relay UE is provided. The relay UE receives an incoming SideLink (SL) transmission from the first remote UE on the first RLC channel, wherein the first RLC channel is associated with an SL Radio Bearer (SLRB) ID, in which the incoming SL transmission includes the first identifier, which includes the SLRB ID and a first UE ID. The relay UE sends an outgoing SL transmission to a second remote UE on a second RLC channel according to the SLRB ID and the first UE ID.

Abstract: A method for operating a user equipment (UE) includes deriving security keys for a signaling radio bearer (SRB) in accordance with a first message received from an access node, initiating security for the SRB in accordance with the first message, receiving, from the access node, a second message including at least one security parameter for at least one data radio bearer (DRB), wherein the at least one security parameter is associated with a session that includes the at least one DRB, and wherein the second message is secured with the security keys for the SRB, and initiating security for the at least one DRB in accordance with the at least one security parameter.

Abstract: A method executed by a relay UE is provided. The relay UE establishes a first Radio Link Control (RLC) channel between a first remote UE and the relay UE, in which the first RLC channel is associated with a first end-to-end identifier. The relay UE establishes a second RLC channel between a second remote UE and the relay UE, in which the second RLC channel is associated with the first end-to-end identifier or a second end-to-end identifier. The relay UE receives an incoming SideLink (SL) transmission from the first remote UE on the first RLC channel, in which the incoming SL transmission includes the first end-to-end identifier. The relay UE sends an outgoing SL transmission to the second remote UE on the second RLC channel, in which the outgoing SL transmission includes one of the first end-to-end identifier and the second end-to-end identifier.

Abstract: A method includes: receiving, by first UE, a first radio resource reconfiguration message and M second radio resource reconfiguration messages, where the first radio resource reconfiguration message and the M second radio resource reconfiguration messages are sent by a first network device, the first radio resource reconfiguration message includes a first handover command, the first handover command is used to instruct to hand over the first UE from the first network device to a second network device, the second radio resource reconfiguration message includes a second handover command, the second handover command is used to instruct to hand over second UE from the first network device to a third network device; and handing over, by the first UE, from the first network device to the second network device according to the first handover command.

Abstract: Methods of data handling for one or more protocol layers in a node of a communications system are described. For example, the methods comprise a first set of functions using destination information of a packet and a second set of functions using flow identifier information of a packet, and encompass routing the packet to one or more peer nodes according to an indicated destination of the packet.

Abstract: A measurement gap parameter configuration method, a reference signal measurement method, and a device are disclosed. The measurement gap configuration method includes: determining, by a network device, that a first condition is satisfied; and configuring, by the network device, one or more measurement gap parameters for a terminal device, where the measurement gap parameter is used by the terminal device to measure a to-be-measured reference signal.

Abstract: A resource allocation method includes sending, by the first device, a first message to the second device, where the first message is used to request a sidelink resource for the first device to send data to a third device, and the first message includes first identification information of the third device. The method further includes receiving, by the first device, a second message sent by the second device, where the second message is used to indicate a target sidelink resource for the first device to send the data to the third device. The method further includes using, by the first device, the target sidelink resource to send the data to the third device.

Abstract: A method for operating a user equipment (UE) includes detecting an occurrence of an overheating condition in the UE, and based thereon, determining a first set of operating capabilities of the UE from a second set of operating capabilities of the UE, where the first and second set of operating capabilities are associated with a connection between the UE and a network entity, and where the first set of operating capabilities is a reduction in operating capability of the UE when compared to the second set of operating capabilities, triggering a transfer of UE capability information associated with the first set of operating capabilities, and applying, by the UE, the first set of operating capabilities to the connection.

Abstract: In a sidelink positioning method, a target UE and/or one or more peer UEs may transmit and/or measure reference signals on a sidelink interface. The target UE may determine its own transmission configuration for such reference signals, potentially taking into account the measurement capabilities of one or more peer UEs. The target UE may request a transmission configuration for such reference signals from one or more peer UEs. The peer UEs may determine their own transmission configuration(s) for the reference signals, potentially taking into account any request received from the target UE and/or the measurement capabilities of the target UE. The capability information, reference signal configuration information, and measurement results may be exchanged among the UEs. Related positioning protocols may be carried over transport layers of the sidelink interface.

Abstract: When cell system information changes, a first terminal device receives, during on duration of the first terminal device, system information sent by a second terminal device, so that the first terminal device can receive the system information through a sidelink between the first terminal device and the second terminal device without a need to maintain a cellular link, thereby reducing complexity and power consumption of system information transmission. Alternatively, when cell system information changes and a first terminal device has only one receive radio frequency chain, the first terminal device obtains system information within a gap period of communication between the second terminal device and the first terminal device through a link between the first terminal device and a network device, so that the first terminal device maintains a cellular link only within the gap period, thereby reducing complexity and power consumption of system information transmission to some extent.

Abstract: In an aspect of the disclosure, a serving base station receives, from a UE, a measurement of a DL-RSTD with respect to a first TRP and a second TRP. The serving base station sends the DL-RSTD to a location management function, wherein the location management function further receives a first RTOA of an SRS arriving at the first TRP and a second RTOA of the SRS arriving at the second TRP. The serving base station receives, from the location management function, a relative time difference calculated based on the DL-RSTD, the first RTOA, and the second RTOA. The relative time difference indicates a synchronization error between the first TRP and the second TRP.