| 摘要 |
 Downlink common control information (202) communicated in a first network (such as a macro network or a small cell) between a first/macro access node and a user equipment UE is mapped to an uplink resource (206). The first/macro access node and the UE then tune to the mapped uplink resource (206) to send or receive dedicated control information about the UE concerning a second network (an underlay network such as a femto CSG or device-to-device, D2D, network). In one embodiment the downlink common control information may be within a downlink assignment indicated by Paging Radio Network Temporary Identifier, Random Access-RNTI, or System Information-RNTI; and the mapping uses a control channel element which carries the P-RNTI or the RA-RNTI or the SI-RNTI. In another, the mapped uplink resource is a format 1a or format 1b PUCCH and the common control information requires neither an acknowledgement nor a negative acknowledgement. |
