Patent ID: 8345608

Claim:
A system for use in a WiMax/WiBro relay system, the system comprising: a Base Station (BS) capable of communicating with at least two Relay Stations (RS), the BS configured to identify the whether a first RS bears a function of scheduling; transmit transmission location information indicating a location where schedule items are transmitted in a next frame to the first RS; transmit the schedule items for the next frame to a second RS without a function of scheduling; and transmit the schedule items to users in the next frame, wherein transmission of the schedule items from the BS to the users occurs in a same frame interval as transmission of respective schedule items from the first RS and the second RS to the users, and wherein the transmission of the schedule items from the BS to the users occurs in a frequency domain and via some sub-channels different from other sub-channels used by the first RS and the second RS to transmit the respective schedule items to the users.