公开(公告)号：US20150098468A1

公开(公告)日：2015-04-09

申请号：US14272711

申请日：2014-05-08

Applicant: ELECTRONICS AND TELECOMMUNICATIONS RESEARCH INSTITUTE

Inventor： Jung-Im KIM ,  Tae Ho LEE ,  Tae Wan YOU ,  Heeyoung JUNG ,  Woojik CHUN

IPC: H04L12/721 ,  H04L12/761

CPC classification number: H04L45/44 ,  H04L45/04 ,  H04L45/16 ,  H04W40/20

Abstract: A method of controlling routing of an identifier/locator mapping service that can secure security regarding location information without a scalability problem and that can support mobility is provided. By generating a domain group by forming a plurality of domains in a group, a scalability problem of an ID/LOC mapping table for ID of a flat structure can be solved. An identifier of a communication object existing at each domain is managed using a counting bloom filter, and thus a message overhead of a mapping service can be reduced. Further, by enabling ID/LOC mapping table information to remain within a domain, location information of a communication object can be protected.

Abstract translation: 提供了一种控制标识符/定位器映射服务的路由的方法，该服务可以保护关于位置信息的安全性，而不会出现可扩展性问题并且可以支持移动性。 通过在组中形成多个域来生成域组，可以解决用于平面结构的ID的ID / LOC映射表的可扩展性问题。 使用计数绽放过滤器来管理存在于每个域的通信对象的标识符，从而可以减少映射服务的消息开销。 此外，通过使ID / LOC映射表信息保持在域内，可以保护通信对象的位置信息。

公开(公告)号：US20140112488A1

公开(公告)日：2014-04-24

申请号：US14061671

申请日：2013-10-23

Applicant: ELECTRONICS AND TELECOMMUNICATIONS RESEARCH INSTITUTE

Inventor： Hyun Woo KIM ,  Do Young KIM ,  Woojik CHUN

IPC: H04R3/02

CPC classification number: H04R3/02 ,  H04M9/082 ,  H04R2430/03

Abstract: An apparatus for canceling an acoustic echo signal caused by a far-end talker signal is provided. The apparatus for canceling an acoustic echo signal includes: a variance estimating unit configured to estimate a variance of a first audio signal of a near-end talker signal and a first noise signal of the near-end talker signal; a step size determining unit configured to determine a step size by using the variance of the first audio signal and the variance of the first noise signal; an adaptive filter coefficient updating unit configured to update an adaptive filter coefficient of an adaptive filter by using the step size; and an acoustic echo canceling unit configured to estimate an acoustic echo signal by using the adaptive filter coefficient, and cancel the acoustic echo signal from a microphone input signal by using the estimated acoustic echo signal.

Abstract translation: 提供一种用于消除由远端讲话者信号引起的声学回波信号的装置。 用于消除声学回波信号的装置包括：方差估计单元，被配置为估计近端讲话者信号的第一音频信号和近端讲话者信号的第一噪声信号的方差; 步长确定单元，被配置为通过使用第一音频信号的方差和第一噪声信号的方差来确定步长; 自适应滤波器系数更新单元，被配置为通过使用所述步长来更新自适应滤波器的自适应滤波器系数; 以及声学回声消除单元，被配置为通过使用自适应滤波器系数来估计声学回波信号，并且通过使用估计的声学回波信号来消除来自麦克风输入信号的声学回波信号。

公开(公告)号：US20150016459A1

公开(公告)日：2015-01-15

申请号：US14302639

申请日：2014-06-12

Applicant: Electronics and Telecommunications Research Institute

Inventor： Tae Ho LEE ,  Byeongok KWAK ,  Woojik CHUN

IPC: H04L12/741

CPC classification number: H04L45/745

Abstract: A method of a node forwarding a packet in an identifier/locator separation environment is provided. The packet forwarding method includes providing a routing table for storing information on domains, searching the routing table using an identifier (ID) of a domain to which a destination node belongs to obtain first information that is information on a next hop, storing the first information in a forwarding table together with an ID of the destination node, searching the forwarding table using the destination node ID to obtain second information that is information on a next hop, and forwarding the packet using the second information.

Abstract translation: 提供了在标识符/定位器分离环境中转发分组的节点的方法。 分组转发方法包括提供用于存储关于域的信息的路由表，使用目的地节点所属的域的标识符（ID）搜索路由表获得作为下一跳信息的第一信息，存储第一信息 在转发表中连同目的地节点的ID一起使用目的地节点ID搜索转发表，以获得作为下一跳信息的第二信息，并使用第二信息转发该分组。

公开(公告)号：US20140376409A1

公开(公告)日：2014-12-25

申请号：US14307562

申请日：2014-06-18

Applicant: ELECTRONICS AND TELECOMMUNICATIONS RESEARCH INSTITUTE

Inventor： Tae Ho LEE ,  Byeongok KWAK ,  Woojik CHUN

IPC: H04L12/751

CPC classification number: H04L45/02

Abstract: In an ID-based communication system, a routing apparatus creates a hierarchical network topology by using link state information on higher-level domains, lower-level domains, and peer domains. The routing apparatus then makes a routing table based on the hierarchical network topology, and performs routing by using the routing table.

Abstract translation: 在基于ID的通信系统中，路由设备通过使用较高级域，下级域和对等域的链路状态信息来创建分级网络拓扑。 然后路由设备基于分级网络拓扑构建路由表，并通过使用路由表进行路由。