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公开(公告)号：KR1020130073223A
公开(公告)日：2013-07-03
申请号：KR1020110140955
申请日：2011-12-23
Applicant: 서울대학교산학협력단
CPC classification number: Y02D70/10 , H04W48/16 , H04W48/20 , H04W52/0209 , H04W92/18
Abstract: PURPOSE: A method of searching for an access point (AP) using a neighboring Zigbee node is provided to effectively search for a WiFi AP using a low-power Zigbee interface. CONSTITUTION: A first mobile device that could not found a WiFi AP is located around a second mobile device. The first mobile device receives channel information of the WiFi AP from the second mobile terminal that found the WiFi AP. The first mobile terminal finds the WiFi AP using the received channel information. The second mobile terminal finds the WiFi AP by itself. The channel information comprises information of detected, not detected, and unknown by each channel with respect to all WiFi channels.
Abstract translation: 目的：提供使用相邻Zigbee节点搜索接入点（AP）的方法，以有效地搜索使用低功率Zigbee接口的WiFi AP。 构成：无法找到WiFi AP的第一个移动设备位于第二个移动设备周围。 第一移动设备从发现WiFi AP的第二移动终端接收到WiFi AP的频道信息。 第一移动终端使用接收到的频道信息来找到WiFi AP。 第二移动终端自己发现WiFi AP。 信道信息包括关于所有WiFi信道的每个信道的检测，未检测和未知的信息。
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公开(公告)号：KR101342391B1
公开(公告)日：2013-12-17
申请号：KR1020120131147
申请日：2012-11-19
Applicant: 서울대학교산학협력단
CPC classification number: H04W74/0816
Abstract: Transmission of ZigBee nodes is autonomously sensed through a preamble-based signal-sensing method to protect a ZigBee network from a WiFi network without having to modify a protocol of a ZigBee network, and whether there is transmission of ZigBee nodes is notified to WiFi nodes. A method for supporting coexistence of ZigBee and WiFi networks, and signaler therefor includes: a step for continuously searching a channel transmitted by ZigBee nodes; a step for determining there is a random ZigBee node transmitting when a SHR field of a random ZigBee node composed of preamble, SFD, and packet length information is found in the searching step; a step for changing the channel to an adjacent channel; and a step for transmitting a busy tone during the period capable of protecting an ACK frame and data of the random ZigBee node.
Abstract translation: ZigBee节点的传输通过基于前导码的信号感测方法自主检测，以保护ZigBee网络免受WiFi网络的影响，而无需修改ZigBee网络的协议，以及ZigBee节点的传输是否被通知给WiFi节点。 一种支持ZigBee和WiFi网络共存的方法及其信号包括：连续搜索由ZigBee节点发送的信道的步骤; 当在搜索步骤中找到由前导码，SFD和分组长度信息组成的随机ZigBee节点的SHR字段时，确定存在随机ZigBee节点发送的步骤; 将信道改变为相邻信道的步骤; 以及在能够保护ACK帧和随机ZigBee节点的数据的时间段期间发送忙音的步骤。
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公开(公告)号：KR101334270B1
公开(公告)日：2013-11-27
申请号：KR1020110140955
申请日：2011-12-23
Applicant: 서울대학교산학협력단
CPC classification number: Y02D70/10
Abstract: 지그비 인터페이스를 이용하여 WiFi 액세스 포인트를 발견한 모바일 장치가 주위의 다른 장치에게 WiFi 액세스 포인트의 채널 정보를 제공하여 WiFi 액세스 포인트를 발견할 수 있도록 한다. 본 발명에 따른 액세스 포인트 탐색 방법은, WiFi 액세스 포인트를 발견하지 못한 제1 모바일 장치가 상기 제1 모바일 장치 주위에 위치하며 상기 WiFi 액세스 포인트를 발견한 제2 모바일 장치로부터 상기 WiFi 액세스 포인트의 채널 정보를 수신하는 단계와, 상기 제1 모바일 장치가 수신한 상기 채널 정보를 이용하여 상기 WiFi 액세스 포인트를 발견하는 단계를 포함한다.
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公开(公告)号：KR101334836B1
公开(公告)日：2013-12-05
申请号：KR1020120131784
申请日：2012-11-20
Applicant: 서울대학교산학협력단
Abstract: A method for fixing pollutants around firing ranges comprises the steps of: preparing a scattering material made by mixing a liquid with at least one kind of compound generating kalium positive ion, ammonium positive ion, and phosphate negative ion at the same time in solution; sprinkling the scattering material on the polluted soil around the firing range. The method for fixing pollutants reduces elution of heavy metals and explosives in the polluted soil, and not generates secondary pollution including pH increase. It can be applied in hard-to-approach area or dangerous area. [Reference numerals] (AA) Exudation ratio(%);(BB) Soil without Potassium Phosphate Monobasic;(CC) Soil injected with Potassium Phosphate Monobasic;(DD) Reaction time(day)
Abstract translation: 一种在焙烧范围附近固定污染物的方法包括以下步骤：通过在溶液中同时将液体与产生钾阳离子，铵正离子和磷酸盐负离子的至少一种化合物混合而制备的散射材料; 在喷射范围内的污染土壤上喷洒散射物质。 固定污染物的方法减少污染土壤中重金属和爆炸物的溶出，不会产生包括pH增加的二次污染。 它可以应用于难以接近的区域或危险区域。 （AA）渗透比（％）;（BB）不含磷酸二氢钾的土壤;（CC）一磷酸二氢钾注入的土壤;（DD）反应时间（天）
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