Patent ID: 9113450
Filing Date: 2015-08-18
Classification: H04L,H04W

Abstract:
1. A method for a wireless transmit receive unit (WTRU) to operate using multiple medium access control (MAC) instances, the method comprising: the WTRU establishing a radio resource control (RRC) connection via a first MAC instance; the WTRU receiving an RRC connection reconfiguration message via the first MAC instance, wherein the RRC connection reconfiguration message comprises a configuration for the WTRU to add or modify one or more cells associated with a second MAC instance of the RRC connection, each of the first MAC instance and the second MAC instance are associated with separate physical layer configurations to be applied to a common type of radio interface, each signaling radio bearer (SRB) for the RRC connection is mapped to the first MAC instance, and the RRC connection reconfiguration message indicates that at least one data radio bearer (DRB) has been configured for use over the second MAC instance; the WTRU activating the second MAC instance; and the WTRU monitoring a control channel of at least one of the one or more cells associated with the second MAC instance based on activating the second MAC instance.