Abstract: An apparatus and method for operating a centralized Base Station (BS) in a mobile communication system are provided. An operation method of a remote radio unit in a separate type BS of a mobile communication system includes receiving channel state information transmitted by a terminal and transmitting the channel state information to a digital unit, performing scheduling using the channel state information, deciding data to be transmitted based on its own scheduling result and a scheduling result received from the digital unit, and providing the data to be transmitted to a modulator/demodulator (modem).

Abstract: A method and apparatus, such as a pico service gateway, for reducing backhaul traffic in a broadband wireless access system are provided. The pico service gateway operatively receives an uplink packet including a contents request from a Mobile Station (MS). Upon receipt of the contents request, the pico service gateway determines whether the requested contents have been cached. If the pico service gateway determines that the contents have not been cached therein, the pico service gateway communicates with a corresponding server to receive the requested contents. Thereafter, the pico service gateway transmits the contents to the MS. Further, if the pico service gateway determines that the contents have not been cached, the pico service gateway caches the contents. In contrast, if the pico service gateway determines that the contents are cached therein, the pico service gateway transmits the contents corresponding to the requested contents.

Abstract: An apparatus and method for operating a centralized Base Station (BS) in a mobile communication system are provided. An operation method of a remote radio unit in a separate type BS of a mobile communication system includes receiving channel state information transmitted by a terminal and transmitting the channel state information to a digital unit, performing scheduling using the channel state information, deciding data to be transmitted based on its own scheduling result and a scheduling result received from the digital unit, and providing the data to be transmitted to a modulator/demodulator (modem).

Abstract: A method and apparatus for reducing backhaul traffic in a broadband wireless access system are provided. The method includes receiving an uplink packet including a contents request from a Mobile Station (MS), determining whether the requested contents have been cached, if it is determined that the contents have not been cached, acquiring the contents from a corresponding server, transmitting the contents to the MS, and if it is determined that the contents have not been cached, caching the contents.