METHOD FOR USE IN DEVICE-TO-DEVICE COMMUNICATION, WIRELESS COMMUNICATION SYSTEM, AND ARCHITECTURE

摘要

A wireless communication system (100) is disclosed in which UEs (120a-120c) can operate in a cellular mode wherein data is transmitted from one UE to another via one or more access nodes in a cellular network, and at least some UEs (120c) are D2D-UEs which can also operate in a direct communication mode wherein a pair of D2D-UEs transmit data directly from one to the other, wherein D2D-UEs operating in the direct communication mode maintain control signaling connection with the network and periodically change to the cellular mode and send CSI to the network, and the network uses CSI and/or network available geographical location information for D2D-UEs in determining whether to cause D2D-UEs to operate in the direct communication mode or the cellular mode.

主权项

1. A method for use in device-to-device (D2D) communication in a wireless communication system, the wireless communication system comprising; a cellular network including one or more access nodes, and user equipments (UEs) which can operate in a cellular mode where data is transmitted from one UE to another via one or more of the access nodes, at least some UEs being D2D capable UEs (D2D-UEs) which can also operate in a direct communication mode where a pair of D2D-UEs transmit data directly from one to the other over a D2D communication link (D2D link), the method comprising:
maintaining a control signaling connection between D2D-UEs operating in the direct communication mode and the cellular network, causing D2D-UEs operating in the direct communication mode to change to the cellular mode at one or more times and to send channel state information (CSI) to the cellular network, and using the CSI and/or network available geographical location information for D2D-UEs to determine whether to cause D2D-UEs to operate in the direct communication mode or the cellular mode.