Patent ID: 8787271

Claim:
A large range management device (LRMD) of managing a communication between a plurality of small range devices (SRDs) and a plurality of large range devices (LRDs), the SRDs and the LRDs being located in a single cell and having different transmission coverage, the LRMD comprising: an access slot allocation unit to allocate an SRD access slot to a radio resource for a downlink, to enable a first SRD to request an association from a network; a selection unit to select, from among the plurality of LRDs, a communication relay device for relaying relay data of the first SRD; a relay slot allocation unit to allocate at least one SRD relay slot to a radio resource for an uplink, to enable the communication relay device to relay the relay data to a second SRD being located outside transmission coverage of the first SRD or another LRD being located outside the transmission coverage of the first SRD; and a receiving unit to receive the relay data based on the at least one SRD relay slot; an SRD slot allocation unit to allocate an SRD slot to the radio resource for the downlink, and to transmit the relay data to the communication relay device based on the SRD slot; wherein the SRD allocation unit allocates the SRD slot to one of the radio resource for the downlink and the resource for the uplink when the first SRD requests a Peer-to-Peer (P2P) communication with a third SRD within the transmission coverage of the first SRD; wherein the relay data includes information associated with a communication environment between the first SRD and the third SRD.