Abstract: Methods, apparatus and systems are disclosed. One method may be implemented by a first Wireless Transmit/Receive Unit (WTRU) having established an indirect link with a second WTRU. The method may include performing a Discovery procedure and detecting, based on a result of the performed Discovery procedure, that the second WTRU is directly reachable. The method may further include initiating establishment of a direct link, switching from the indirect link to the direct link and communicating, by the first WTRU with the second WTRU, using the established direct link after the switch.

Abstract: The present disclosure provides a mechanism enabling switching between different configuration for a positioning procedure to dynamically adapt the accuracy of the positioning procedure to the current requirements of client devices and/or environmental conditions. The switch may be initiated by a network node which can instruct a client device to deactivate positioning according to a first configuration and to activate positioning according to a second configuration. The network node can determine the second configuration based on e.g. position of client device, density of client devices, current position requirements per client device, network load, and/or available resources. Thereby, allowing the configuration for the positioning procedure to be adapted based on dynamic requirements on the positioning procedure.

Abstract: The invention provides a mechanism for switching between a first and a second positioning procedure. The first positioning procedure may be an absolute positioning procedure and the second positioning may be a relative positioning procedure. The switch may be initiated by a network node (300) which can instruct a client device (100) to terminate the first positioning procedure and to activate the second positioning procedure or to instruct the client device (100) to continue with the first positioning procedure and to activate the second positioning procedure. Thereby, allowing the positioning procedure used by the client device (100) to be adapted e.g. based on dynamic requirements on positioning procedures set by applications.

Abstract: The invention relates to power control in groupcast communication between a first communication device (100) and a set of second communication devices (300a, 300b, . . . , 300n). The first communication device (100) obtains received signal qualities from a reporting subset (300a?, 300b?, . . . , 300n?) in the set of second communication devices (300a, 300b, . . . , 300n) and determines at least one path loss value for the reporting subset (300a?, 300b?, . . . , 300n?) based on the one or more obtained received signal qualities. The first communication device (100) may further determine a transmission power value for the groupcast communication based on the at least one path loss value and perform a groupcast communication transmission based on the determined transmission power value. Furthermore, the invention also relates to a second communication device (300), corresponding methods, and a computer program.

Abstract: The disclosure relates to early detection and indication of a Quality-of-Service (QoS) non-fulfillment in one or more radio links serving an application. A client device monitors for a QoS non-fulfillment in the one or more radio links based on a QoS monitoring configuration associated with the application. The QoS monitoring configuration may be received from a network node and/or derived based on a predefined rule. Upon detection of a QoS non-fulfillment of one or more QoS requirements obtained from the QoS monitoring configuration, the client device provides a QoS non-fulfillment indication to the application. The QoS non-fulfillment indication gives the application an early warning about QoS non-fulfillment on the one or more radio links. Thereby, allowing the application to take precautionary actions to counteract possible negative consequences of the QoS non-fulfillment. Furthermore, the disclosure also relates to corresponding methods and a computer program.