Hyun-Jeong Kang

TL;DR: In this paper, an upper node is provided for use in a wireless communication system using a relay scheme, which includes means for transmitting, upon a request of a lower relay station for an initial connection of the lower relay stations, downlink section information for communication with the lower relaying station for a relay service to the upper relay station through the downlink.

TL;DR: In this article, the authors proposed a handover process optimization method for network re-entry operation by a target base station (BS), which includes detecting that a mobile station (MS) is to perform a handoff to the target BS; and transmitting to the MS handoff process optimization information, included in a RNG-RSP message.

TL;DR: In this article, a scanning apparatus and method in a multi-hop relay Broadband Wireless Access (BWA) communication system are provided. But the scanning method is not considered in this paper.

TL;DR: The DRX mechanism considering analogue beamforming technique is proposed and the performance of the system varying parameters of beam selection and DRX according to the given beam pattern, traffic model and movement of MS is analyzed.

TL;DR: In this article, the authors propose a method for allocating a safety channel in a wireless communication system which divides a full frequency band into a plurality of subcarrier bands and includes subchannels, each of which is a set of a predetermined number of contiguous subcarriers, where the sub-channels include a safety subchannel allocated to particular subscriber stations (SSs), which is unused in a neighbor base station.