公开(公告)号：KR1020100006484A

公开(公告)日：2010-01-19

申请号：KR1020080066727

申请日：2008-07-09

Applicant: 한국전자통신연구원 ,  광주과학기술원

Inventor： 강현덕 ,  홍헌진 ,  임혁 ,  정관희

IPC: H04B7/26 ,  H04B1/40

CPC classification number: H04W4/00 ,  H04W72/04

Abstract: PURPOSE: A PCS critical value control method and a terminal device of a mobile network using the congestion of a shared channel are provided to improve the performance of the whole network by blocking PCS critical value control maximizing the spatial reuse. CONSTITUTION: An adjustment decision unit(210) decides the control of a PCS(PHYsical Carrier Sensing) critical value deciding the idle state of the shared channel based on the congestion of a shared channel. A critical value control unit(220) adjusts the PCS critical value based on a packet loss rate. A channel state determiner(230) decides the idle state of the shared channel based on the size of the signal from the mobile network and PCS critical value.

Abstract translation: 目的：提供使用共享信道拥塞的移动网络的PCS临界值控制方法和终端设备，通过阻止最大化空间重用的PCS临界值控制来提高整个网络的性能。 构成：调整决定单元（210）基于共享信道的拥塞来决定PCS（PHYsical Carrier Sensing）临界值的控制，从而决定共享信道的空闲状态。 临界值控制单元（220）基于分组丢失率来调整PCS临界值。 信道状态确定器（230）基于来自移动网络的信号的大小和PCS临界值来确定共享信道的空闲状态。

公开(公告)号：KR1020090065087A

公开(公告)日：2009-06-22

申请号：KR1020070132527

申请日：2007-12-17

Applicant: 한국전자통신연구원

Inventor： 강현덕 ,  김창주

IPC: H04B17/00 ,  H04L12/24 ,  H04B7/26

CPC classification number: H04W16/18 ,  H04W16/14 ,  H04W16/24 ,  H04W28/18

Abstract: A frequency use efficiency evaluation method of a frequency sharing wireless system is provided to suggest area efficiency which is a new index for evaluating frequency use efficiency, thereby exactly evaluating performance of a frequency sharing technology. A real coverage per a unit area is calculated by using a design parameter for the first wireless system and a design parameter for the second wireless system. Frequency use efficiency is evaluated by using the calculated real coverage per a unit area. wa shows width and breadth of a given area. rd shows a service coverage of a DTV(Digital Television). kc shows a keep-out distance of the DTV system. rw shows a WRAN cell radius.

Abstract translation: 提供频率共享无线系统的频率利用效率评估方法，提出区域效率，这是评估频率使用效率的新指标，从而准确评估频率共享技术的性能。 通过使用第一无线系统的设计参数和第二无线系统的设计参数来计算每单位面积的实际覆盖。 通过使用每单位面积计算的实际覆盖率来评估频率使用效率。 wa显示给定区域的宽度和宽度。 rd显示DTV（数字电视）的服务范围。 kc显示DTV系统的保留距离。 rw显示一个WRAN单元格半径。