| 摘要 |
3GPP LTE device-to-device, D2D, communication establishment coordinated by the network, for User Equipments, UEs, in idle or in connected mode. Upon request by a UE of D2D resources, the base station transceiver, eNB, provides configuration information relating to a temporary set of radio resources , the temporary set of radio resources being valid during a limited time interval. The configuration is performed by means of Radio Resource Control, RRC messages. For UEs in idle mode the eNB may provide a transmission resource pool in a System Information Block, SIB. Both the UE and the eNB start a validity timer related to the D2D communication. The UE may request during the assigned D2D transmission, an extension of the assigned time or resource pool. Also, when the validity timer expires, the eNB considers that D2D operation is completed and terminated. |
