Abstract: Embodiments of the present disclosure relate to methods and apparatuses for handover and reestablishment in a wireless communication system. According to some embodiments of the disclosure, a method may include: receiving, at a user equipment (UE), a radio resource control (RRC) reconfiguration message including a path switch indication and a list of candidate relays; selecting a target relay from the list of candidate relays; and establishing a PC5 RRC connection with the target relay. Furthermore, the UE may select another target relay for path switch if a path switch failure associated with the first selected target relay happens.

Abstract: The present application relates to a method and an apparatus for performing cell measurement process. One embodiment of the present disclosure provides a method performed by a method performed by a User Equipment (UE) in a wireless network with a variable coverage, comprising: performing a cell measurement process of one or more cells of the wireless network; and in response to a variation in the coverage of the wireless network in relation to the UE, disabling the cell measurement process of the one or more cells of the wireless network.

Abstract: Embodiments of the present disclosure relate to methods and apparatuses for path switch in a wireless communication system. According to some embodiments of the disclosure, a method may include: receiving, at a UE, an RRC reconfiguration message from a BS via a source Uu link, wherein the RRC reconfiguration message includes a path switch indication indicating a switch to a target relay; and in response to the RRC reconfiguration message, transmitting an RRC reconfiguration complete message to the BS via the target relay, initiating a reestablishment procedure over a Uu interface, or falling back to the source Uu link. The method may further include: in response to the RRC reconfiguration message, detaching or maintain the source Uu link.

Abstract: Embodiments of the present disclosure relate to methods, apparatuses, and media for handling Listen Before Talk (LBT) failure for sidelink transmission. A method performed by a terminal device comprises in response to at least one LBT failure during a sidelink transmission procedure, determining one or more resources for transmitting data that has failed to be transmitted from the terminal device due to the at least one LBT failure and transmitting the data from the terminal device via the one or more resources as determined. In the present disclosure, a mechanism for data retransmission cause by the LBT failure in the sidelink commutation is specified, which is benefit for the sidelink to co-exist with other wireless technologies in NR.

Abstract: A state processing method, a user equipment and a base station are provided. The method includes: receiving state configuration information sent by a base station; and determining, based on the state configuration information, whether to set an initial state of the secondary cell and an initial state of a Bandwidth Part (BWP) associated with the secondary cell to a new state, where the new state is a state between an activated state and a deactivated state, and a quantity of secondary cells configured by the base station for a user equipment is at least one.

Abstract: Embodiments of the present application are directed to a method and apparatus for configuring timers and performing data transmission in a SDT procedure. In an embodiment of the present application, the method includes: receiving configured grant (CG) resource configuration information on a plurality of CG resources from a base station (BS); and determining a value of timing alignment (TA) timer based on a period of one selected CG resource from the plurality of CG resources or based on a value configured by the BS; and transmitting data in at least one of the plurality of CG resources if the TA timer is running and the at least one of the plurality of CG resources is valid.

Abstract: Embodiments of the present application are related to a method and apparatus for data transmission. An exemplary method of the present application includes: generating a first physical data unit (PDU) based on first key information from a wireless network while a terminal device is in a non-connected state with the wireless network; receiving a second key information from the wireless network; generating a second PDU from the generated first PDU based on the second key information; and transmitting the generated second PDU within the wireless network.

Abstract: Embodiments of the present application relate to methods and apparatuses of an enhanced mechanism for a deactivated or dormant secondary node (SN) in a multi-radio dual connectivity (MR-DC) scenario under a 3rd Generation Partnership Project (3GPP) 5G New Radio (NR) system or the like. According to an embodiment of the present application, a method may be performed by a user equipment (UE) and can include: receiving configuration information from a serving cell, wherein the configuration information indicates to the UE an activated or a deactivated state of a secondary node (SN); and in response to receiving the configuration information indicating the activated state of the SN of the UE, receiving a deactivation indication or determining an expiry of a timer associated with deactivating the SN of the UE.

Abstract: The present application relates to a method and an apparatus for fallback of data transmission. The method includes: detecting a trigger condition relating to a wireless network characteristic, while the user equipment is in a non-connected RRC state with a network device; and controlling a data transmission according to the detection of the trigger condition.

Abstract: Embodiments of the present disclosure relate to methods, apparatuses, and media for indicating Listen Before Talk (LBT) failure. A method performed by a terminal device comprises determining whether at least one consistent Listen Before Talk, LBT, failure is triggered on a set of resources associated with a data transmission between a network device and the terminal device in Radio Resource Control (RRC) non-connected state; in accordance with a determination that at least one consistent LBT failure is triggered, generating an indication of the at least one consistent LBT failure for the data transmission in the RRC non-connected state; and transmitting the indication to the network device. In this way, the format and signaling of consistent LBT failure indication for data transmission in the RRC non-connected state is designed and the transmission of the indication can be performed in various state of the terminal device.

Abstract: Embodiments of the present application are directed to a method and apparatus for restricting access of devices. The receiving cell access related method may include: receiving cell access related information; and information performing an access control based on the cell access related information and a device type of a user equipment (UE).

Abstract: The present application relates to a method and an apparatus for performing random access. The method includes: receiving a random access type condition message from a base station; and selectively performing a 2-step random access procedure or a 4-step random access procedure with the base station according to the random access type condition message.

Abstract: The present disclosure provide a methods and a system for processing an SR. The method includes: as for a current logical channel/logical channel group, when detecting that SR count reaches a maximum number of times of SR transmission of the current logical channel/logical channel group, releasing Physical Uplink Control Channel (PUCCH) resources on the numerology/TTI type corresponding to a current SR; when Sounding Reference Signal (SRS) resources are configured on the numerology/TTI type corresponding to the current SR, releasing the SRS resources; when downlink allocation and/or uplink grant resources are configured on the numerology/TTI type corresponding to the current SR, releasing the downlink allocation and/or uplink grant resources.

Abstract: Embodiments of the present disclosure relate to a solution for supporting an LBT mechanism for sidelink transmissions. In a method for communication, a terminal device starts a listen-before-talk (LBT) procedure. The terminal device generates an LBT failure indication if a channel for a side Link transmission is occupied during the LBT procedure. If the number of LBT failure indications is equal to or greater than a predetermined number threshold, the terminal device determines a consistent LBT failure associated with the sidelink transmission. In this way, the sidelink transmission associated with the terminal device can coexist with other transmissions based on other wireless technologies, for example, on an unlicensed band.

Abstract: Embodiments of the present disclosure relate to methods and apparatuses for mobility robustness optimization. According to some embodiments of the disclosure, a method may include: performing one of the following handover procedures associated with a target cell: a handover procedure in response to receiving a handover command, a CHO procedure in response to meeting a CHO execution condition, and a DAPS handover procedure in response to receiving a DAPS handover command; accessing the target cell; storing assistant information related to a successful handover to the target cell; and transmitting the assistant information related to the successful handover to the target cell in response to a trigger condition for transmitting assistant information being met. In addition, the target BS may transmit the assistant information related to the successful handover to the source BS over the Xn interface.

Abstract: Embodiments of the present disclosure relate to methods and apparatuses for handling time alignment for a small data transmission (SDT) procedure of a user equipment (UE). According to an embodiment of the present disclosure, a method includes: receiving, by a user equipment (UE), indication information, wherein the indication information indicates that a base station (BS) supports a small data transmission (SDT) procedure, and wherein the UE is capable to perform the SDT procedure; and receiving configuration information regarding a time alignment timer (TAT) for the SDT procedure.

Abstract: Embodiments of the present application are directed to a method and apparatus for small data transmission. In an embodiment of the present application, the method includes: selecting a channel access priority class (CAPC) for small data transmission (SDT) based on a rule if the CAPC for SDT is not indicated by a base station; and performing SDT based on the CAPC for the SDT.

Abstract: The present disclosure relates to a method and an apparatus for small data transmission or reception. One embodiment of the present disclosure provides a method performed by a user equipment (UE), including: transmitting uplink data in an inactive mode or an idle mode; and receiving a response message which indicates information associated with data to be transmitted or received in the inactive mode or the idle mode.

Abstract: Disclosed are methods and apparatuses for small data transmission in random access. One embodiment of the subject application provides a method performed by a user equipment, including monitoring at least one radio network temporary identifier for receiving a first downlink control information (DCI), and receiving the first DCI.

Abstract: Disclosed are methods for a random access. One embodiment of the subject application provides a method performed by a gNB, including determining a user equipment (UE) to enter an RRC_INACTIVE state by a gNB central unit (gNB-CU), sending a UE context suspension indication and a UE identification (ID) of small data transmission (SDT) to at least one first gNB distributed unit (gNB-DU) by the gNB-CU, storing the UE ID of SDT and keeping a UE context of SDT by the at least one first gNB-DU, and treating the UE in the RRC_INACTIVE state and forwarding a radio resource control (RRC) release manage to the UE by the at least one first gNB-DU, wherein the UE context suspension indication is for indicating the at least one first gNB-DU to keep a the UE context of SDT in the RRC_INACTIVE state, and the UE ID of SDT is for identifying the UE context of SDT. Related apparatuses are also disclosed.