Abstract
Compatibility mapping for backhaul control channels, frequency priority mapping of control channel elements (CCEs) to circumvent relay physical control format indicator channels (R-PDFICH), and tree-based relay resource allocation to minimize resource allocation map bits. A method and apparatus for providing are disclosed. Un downlink (DL) control signal, Un DL acknowledgment (ACK) / negative acknowledgment (NACK), and / or relay physical downlink control channel (R-PDCCH) (or the like) of eNB (Un interface) A method and apparatus (eg, Node-B (eNB) delegated by a relay node (RN)) for mapping in the DL direction is disclosed. This includes the time / frequency mapping of the above-described control signal to a resource block (RB) of a multimedia broadcast multicast service (MBSFN) single frequency network (MBSFN) -reserved subframe in an RN cell and an encoding procedure therefor. Also disclosed is a method and apparatus for optimizing signaling overhead by avoiding R-PCFICH and minimizing the bits required for resource allocation.
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