Efficient Multi-hop Resource Reservation Scheme in WiMedia D-MAC for Multi-hop N-Screen Services
Kyeong Hur · The Journal of the Korean Institute of Information and Communication Engineering · 2015
Provided are a method for effectively reserving a multi-hop resource in a WiMedia D-MAC for a multi-hope N-screen service, and a new multi-stage cooperative DRP (MSCDRP) IE to provide a method for reserving a multi-hope resource which reduces a delay time between terminals. The method for effectively reserving a multi-hop resource in a WiMedia D-MAC for a multi-hope N-screen service, comprises the following steps: a plurality of D-MAC devices collect DRP IE validity check information; each D-MAC N-screen device selects a D-MAC device group; each D-MAC N-screen device transmits MSCDRP IE and DRP IEs to all devices included in the selected D-MAC device group; Each device receiving the MSCDRP IE and the DRP IE checks validity of the received MSCDRP IE and DRP IE; when the received MSCDRP IE and the DRP IE is valid, each device receiving the MSCDRP IE and the DRP IE transmits DRP IE including information on an acceptance state of a DRP reservation request to the N-screen device, and when even one of a validity test on the received the MSCDRP IE and the DRP IE is wrong, each device receiving the MSCDRP IE and the DRP IE rejects the DRP reservation request; and a member list of the D-MAC device group is updated to only include the devices accepting the DRP reservation request.