公开(公告)号：KR1020140071520A

公开(公告)日：2014-06-12

申请号：KR1020120115004

申请日：2012-10-16

Applicant: 한국전자통신연구원

Inventor： 정종수 ,  이지훈

IPC: H04L12/70

CPC classification number: H04W24/02 ,  H04W52/0225 ,  Y02D70/144

Abstract: Disclosed are a duty cycle control method and apparatus to mitigate latency for duty cycle wireless low-power medium access control (MAC). The duty cycle control method according to an embodiment of the present invention can control a duty cycle depending on traffic conditions in the asynchronous duty cycle-based low-power MAC to mitigate the packet transmission latency between nodes without significant damage of unique low power characteristics.

Abstract translation: 公开了一种用于减轻占空比无线低功率媒体访问控制（MAC）的等待时间的占空比控制方法和装置。 根据本发明的实施例的占空比控制方法可以根据基于异步占空比的低功率MAC中的业务条件来控制占空比，以减轻节点之间的分组传输等待时间，而不会对独特的低功率特性造成显着的损害。

公开(公告)号：KR1020140034951A

公开(公告)日：2014-03-21

申请号：KR1020120094562

申请日：2012-08-28

Applicant: 한국전자통신연구원

Inventor： 이지훈 ,  정종수 ,  김선태 ,  마평수

IPC: H04L12/70 ,  H04L12/28 ,  H04L29/06

CPC classification number: H04L69/04 ,  H04L45/74 ,  H04W40/24 ,  Y02D70/122 ,  Y02D70/144 ,  Y02D70/22

Abstract: The present invention provides a method of managing a context table for compressing a header based on a context to efficiently manage the context table and to increase a rate of a compressed packet in a low-power and Lossy networks (LLN) by applying a score to the context by taking a distance of a destination node and multi-casting transmission into consideration upon mutual communication between an external network and the LLN in a 6LoWPAN and registering the context in the table according to the highest order of the score. To this end, the present invention provides a method including the steps of determining a size of a score by taking into consideration traffic information of a packet transmitted from an external host by a boundary router connecting the LLN to an external network; assigning a context ID to a prefix of the transmitted packet by the boundary router based on the determined size of the score to register the context in the context table; and transmitting a packet of the context registered in the context table to all nodes of the LLN. [Reference numerals] (AA) Replace context

Abstract translation: 本发明提供了一种管理上下文表的方法，用于基于上下文来压缩报头以有效地管理上下文表，并且通过将分数应用于低功率和有损网络（LLN）来提高压缩分组的速率 通过在6LoWPAN中的外部网络和LLN之间的相互通信中考虑目的地节点和多播传输的距离，并且根据分数的最高顺序将表格中的上下文记录在上下文中。 为此，本发明提供了一种方法，包括以下步骤：通过考虑从连接到外部网络的边界路由器从外部主机发送的分组的业务信息来确定分数的大小; 基于所确定的分数的大小，通过边界路由器将上下文ID分配给所发送的分组的前缀，以在上下文表中注册上下文; 并将在上下文表中注册的上下文的分组发送到LLN的所有节点。 （附图标记）（AA）替换上下文