Other

Electronics and Telecommunications Research Institute

Jong Kuk Lee

Jung Ha Hwang

Hyung Kyu Lee

Kwang Choon Kim

Boo Geum Jung

Hea Sook Park

Yoon Sik Yoo

Ki Cheol Jeon

Ki Won Kim

Byeong Sik Kim

Jin Hyuk Yim

Hee Sung Cha

Hey Zoo Hwang

Moon Han Kim

Byung Chang Chung

Kyung Hyu Lee

Provided is a method in which a management server provides wireless LAN security policy by participating in multiple APs. The method includes a step of receiving terminal information of a terminal, which is acquired in a process of scanning broadcasting information of multiple APs, from each of the multiple APs, a step of issuing and storing a token for opening a wireless LAN data channel to each of the multiple APs on the basis of reception time points of the terminal information, a step of receiving a token request for opening a wireless LAN data channel to an AP to be accessed, selected by a terminal among the multiple APs, and a step of distributing, to the terminal, a token of the AP to be accessed corresponding to the token request.

Management server, terminal, and method for providing and applying wireless LAN security policy by participating in multiple access points

Provided is a matching system including a policy and rule processing unit configured to extract SC units for each application service required, combine the SC units, configure a transaction unit, and determine an amount to be charged for a transaction according to a charging rule; a matching processing unit configured to match the extracted SC units to NC units; and an NC combination processing unit configured to combine the NC units used for the matching and deliver the combination of the NC units and detailed operating conditions to the networking management system.

Network operation system and method

The activated kaolin powder compound is prepared from naturally-existing kaolin (hereinafter &ldquo;natural kaolin&rdquo;). The activated kaolin powder compound is prepared by heating natural kaolin to 480&deg; C. within at most one hour, calcinating the heated natural kaolin at high temperature by heating in the range of 800&tilde;950&deg; C. over at least 15 minutes, quenching the calcinated kaolin with water or air, and pulverizing the quenched activated kaolin to give powder having particle sizes of 2 &mgr;m or less, wherein the natural kaolin is primarily composed of halloysite (Al,O,.2SiO,.4H,O). The activated kaolin powder compound is employed in an amount of about 5 to 15% by weight of cement for preparing mortar or cement. The cement composition containing the activated kaolin powder compound can provide a mortar or concrete having excellent properties in compressive strength, flexural strength and water permeability.

Activated koalin powder compound for mixing with cement and method of preparing the same

The activated kaolin powder compound is prepared from naturally-existing kaolin (hereinafter 'natural kaolin'). The activated kaolin powder compound is prepared by heating natural kaolin to 480.degree. C. within at most one hour, calcinating the heated kaolin at high temperature by heating to 980.degree. C. over at least one hour, quenching the calcinated kaolin with water or air, and pulverizing the quenched kaolin to give particle sizes of 2 .mu.m or less. The activated kaolin powder compound is employed in an amount of about 5 to 15% by weight of cement for preparing mortar or cement. The cement composition containing the activated kaolin powder compound can provide a mortar or concrete having superior properties in compressive strength, flexural strength and water permeability.

Activated kaolin powder compound for mixing with cement and method of

Growing community of inventors

Daejeon, South Korea

Jong Kuk Lee