摘要:
A method and apparatus are disclosed from the perspective of a User Equipment, UE. In one embodiment, the method includes setting a state variable used for the sidelink transmission to "1" when a Packet Data Convergence Protocol, PDCP, entity for the sidelink radio bearer is established (1805). The method also includes performing the sidelink transmission for a very first data unit of the PDCP entity on the sidelink radio bearer, wherein a sequence number of the very first data unit is set to the state variable (1810).
摘要:
A method and apparatus for triggering radio bearer release by a relay UE in a wireless communication system are disclosed. Preferably, the method includes the relay UE connects with an eNB. The method also includes the relay UE establishes a PDN connection for supporting traffic relaying. The method further includes the relay UE establishes a layer-2 link with a remote UE. In addition, the method includes the relay UE creates a radio bearer between the relay UE and the eNB for forwarding data packets between the remote UE and a PDN corresponding to the PDN connection. Furthermore, the method includes the relay UE sends a NAS message to the eNB if a failure of the layer-2 link is detected. And the method includes the relay UE receives a RRC message indicating release of the radio bearer in response to transmission of the NAS message from the eNB.
摘要:
A method and apparatus are disclosed for switching communication interface in a wireless communication system. Preferably, the method includes a UE using a first interface to transmit data for a service (1305). The method also includes the UE receiving an information from a base station for indicating that the first interface is not allowed to transmit data for the service (1310). The method further includes the UE transmitting a request to the base station for using a second interface in response to the reception of the information (1315).
摘要:
A method and device are disclosed for a User Equipment, UE, to sidelink discontinuous reception, DRX, for sidelink groupcast communication associated with a group. In one embodiment, the method includes the UE assuming or considering a sidelink DRX configuration applied for the sidelink groupcast communication associated with the group, wherein the sidelink DRX configuration comprises at least one of an on-duration timer length used for determining an on-duration at the beginning of each sidelink DRX cycle and/or a cycle length used for determining a length of each sidelink DRX cycle (2805). The method also includes the UE deriving or determining a time to start of on-duration for each sidelink DRX cycle or start of each sidelink DRX cycle based on at least an identifier associated with the group (2810). The method further includes the UE transmitting a sidelink control information associated with the group on a sidelink control channel in a period, wherein the period is determined based on the SL DRX configuration and the time to start of on-duration for each sidelink DRX cycle or start of each sidelink DRX cycle (2815).
摘要:
Methods and a device are disclosed from the perspective of a second User Equipment (300), UE, to establish one-to-one connection between a first UE and the second UE. In one embodiment, the method includes the second UE initiating a first procedure of establishing the one-to-one connection with the first UE for a unicast communication between the first UE and the second UE or for a UE-to-UE communication between the first UE and a third UE via the second UE or a second procedure of establishing the one-to-one connection with the first UE for a UE-to-Network communication between the first UE and a network node via the second UE (2905). The method also includes the second UE transmitting a first PC5-S message to the first UE for completing the first procedure of establishing the one-to-one connection with the first UE for the unicast communication or the UE-to-UE communication if the first procedure is initiated, wherein the first PC5-S message includes Quality of Service, QoS, information for the unicast communication or the UE-to-UE communication (2910). The method further includes the second UE transmitting a second PC5-S message to the first UE for completing the second procedure of establishing the one-to-one connection with the first UE for the UE-to-Network communication if the second procedure is initiated, wherein the second PC5-S message does not include any QoS information for the UE-to-Network communication (2915).
摘要:
A method and apparatus are disclosed from the perspective of a first device to perform sidelink communication. In one embodiment, the method includes the first device performing sidelink resource selection or reselection procedure for a sidelink transmission to a second device, wherein the sidelink resource selection or reselection procedure is performed to select at least one sidelink resource from candidate sidelink resources within a time duration of selection window (1405). The method further includes the first device selecting a first sidelink resource based on sidelink active time or wake-up time of the second device, wherein the first sidelink resource is within the time duration of selection window (1410). The method also includes the first device performing the sidelink transmission on the first sidelink resource to the second device (1415).
摘要:
A method and apparatus are disclosed from the perspective of a first User Equipment, UE, to request dedicated sidelink configuration. In one embodiment, the method includes the first UE transmitting a first Radio Resource Control, RRC, message to a network node, wherein the first RRC message includes a sidelink Quality of Service, QoS, information, and wherein a presence of an identity of a sidelink QoS flow in the sidelink QoS information is mandatory and a presence of a QoS profile of the sidelink QoS flow in the sidelink QoS information is optional (1205). The method also includes the first UE receiving a second RRC message from the network node, wherein the second RRC message includes a dedicated sidelink configuration and the identity of the sidelink QoS flow associated with the dedicated sidelink configuration (1210).
摘要:
A method and apparatus are disclosed from the perspective of a first User Equipment, UE, to report UE sidelink capability information to a network node. In one embodiment, the method includes the first UE establishing a unicast link with a second UE (2205). The method also includes the first UE receiving a second sidelink capability information of the second UE from the second UE (2210). The method further includes the first UE transmitting a first sidelink capability information of the first UE and the second sidelink capability information to the network node or transmitting a common sidelink capability information to the network node, wherein the common sidelink capability information is derived from the first sidelink capability information and the second sidelink capability information (2215).