公开(公告)号：US20110153731A1

公开(公告)日：2011-06-23

申请号：US12971522

申请日：2010-12-17

申请人： Soon-heung Jung ,  Jeong Ju Yoo ,  Won Ryu

发明人： Soon-heung Jung ,  Jeong Ju Yoo ,  Won Ryu

IPC分类号： G06F15/16

CPC分类号： H04L65/4084 ,  H04L65/608

摘要： Provided is a method of updating content information associated with a content being serviced in a streaming server group. The content information updating method may include: monitoring whether a new streaming server joins a streaming server group servicing the same category of a content; updating content information associated with the content being serviced in the streaming server group, and transferring the updated content information to a client when the new streaming server joins; and providing a content service via the new streaming server according to a request of the client.

摘要翻译： 提供了一种在流服务器组中更新与被服务的内容相关联的内容信息的方法。 内容信息更新方法可以包括：监视新的流服务器是否加入服务于内容的相同类别的流服务器组; 更新与在流服务器组中服务的内容相关联的内容信息，以及当新的流服务器加入时将更新的内容信息传送到客户端; 以及根据客户端的请求经由新的流服务器提供内容服务。

公开(公告)号：US07583669B2

公开(公告)日：2009-09-01

申请号：US11133071

申请日：2005-05-18

申请人： Jeong Ju Yoo ,  Tae Yeon Kim ,  Hyun Ho Yun ,  Byoung Whi Kim ,  Nam Uk Kim ,  Jae Gwan Kim ,  Bok Rae Jung ,  Min Ho Kang

发明人： Jeong Ju Yoo ,  Tae Yeon Kim ,  Hyun Ho Yun ,  Byoung Whi Kim ,  Nam Uk Kim ,  Jae Gwan Kim ,  Bok Rae Jung ,  Min Ho Kang

IPC分类号： H04L12/28 ,  H04J14/00 ,  H04B15/00

CPC分类号： H04L45/00 ,  H04J14/0226 ,  H04J14/0232 ,  H04J14/0238 ,  H04J14/0246 ,  H04J14/025 ,  H04J14/0282 ,  H04L12/185 ,  H04L45/16 ,  H04L45/62 ,  H04Q11/0067 ,  H04Q2011/0064 ,  H04Q2011/0069

摘要： The present provides a method of dynamically managing multicast groups and allocating multicast service wavelengths for the highest channel efficiency. According to the present invention, the share indices of wavelengths of all multicast service groups, which employ broadcasting wavelengths and data wavelengths, are periodically ascertained on the basis of IGMP snooping-based technology in a WDM-PON. Based on the ascertainment results, if the channel share index of the group that employs the broadcasting wavelength is smaller than the channel share index of the group that employs the data wavelength, the share index of the wavelength of the multicast group that employs the broadcasting wavelength is maximized by dynamically changing allocation of the wavelength of the multicast group, so that a maximum multicast service can be provided within limited resources.

摘要翻译： 本发明提供一种动态管理多播组并分配多播服务波长以实现最高信道效率的方法。 根据本发明，在WDM-PON中，基于IGMP窥探技术，周期性地确定了采用广播波长和数据波长的所有组播业务组的波长份额指标。 基于确定结果，如果使用广播波长的组的信道共享指数小于采用数据波长的组的信道共享索引，则使用广播波长的多播组的波长的共享索引 通过动态地改变多播组的波长分配来最大化，从而可以在有限的资源内提供最大的组播服务。

公开(公告)号：US07373084B2

公开(公告)日：2008-05-13

申请号：US10913884

申请日：2004-08-05

申请人： Hyun Ho Yun ,  Tae Yeon Kim ,  Jeong Ju Yoo ,  Byoung Whi Kim

发明人： Hyun Ho Yun ,  Tae Yeon Kim ,  Jeong Ju Yoo ,  Byoung Whi Kim

IPC分类号： H04J14/00

CPC分类号： H04J14/0282 ,  H04B10/40 ,  H04J14/02 ,  H04J14/0227 ,  H04J14/0241 ,  H04J14/0298 ,  H04Q11/0067 ,  H04Q2011/0016 ,  H04Q2011/0064

摘要： A termination device for use in a WDM-SCM PON system can effectively support a multi-channel integration function of a WDM/SCM PON system. The termination device contained in a termination end of a WDM/SCM (Wavelength Division Multiplexing/Sub-Carrier Multiplexing) PON (Passive Optical Network) to connect the PON with either a subscriber or an Ethernet service network includes: an Ethernet interface module connected to the Ethernet service network or the subscriber to perform an Ethernet interface function; a WDM/SCM physical layer module physically connected to the WDM/SCM PON to transmit/receive optical signals to/from the WDM/SCM PON; and a MAC (Media Access Control)-bridge module for performing a multiplexing/demultiplexing operation based on a MAC address upon receipt of transmission/reception frames, and reconstructing preambles of the frames while being classified according to channels so that individual Ethernet frames are matching-processed while being classified according to SCM channels of the WDM/SCM physical layer module.

摘要翻译： 用于WDM-SCM PON系统的终端设备可以有效地支持WDM / SCM PON系统的多信道集成功能。 包含在将PON与用户或以太网业务网络连接的WDM / SCM（波分复用/子载波复用）PON（无源光网络）的终端中的终端设备包括：以太网接口模块，连接到 以太网业务网络或用户执行以太网接口功能; 物理上连接到WDM / SCM PON的WDM / SCM物理层模块，用于向/从WDM / SCM PON发送/接收光信号; 以及MAC（媒体访问控制） - 桥接模块，用于在接收到发送/接收帧时基于MAC地址执行复用/解复用操作，并且在根据信道被分类的同时重构帧的前同步码，使得各个以太网帧匹配 在根据WDM / SCM物理层模块的SCM通道进行分类的过程中。

公开(公告)号：US08726119B2

公开(公告)日：2014-05-13

申请号：US12974505

申请日：2010-12-21

申请人： Jung Won Kang ,  Il Hong Shin ,  Jeong Ju Yoo ,  Won Ryu ,  Jeongseok Ha ,  Donghyub Kang ,  Kais Azzouzi

发明人： Jung Won Kang ,  Il Hong Shin ,  Jeong Ju Yoo ,  Won Ryu ,  Jeongseok Ha ,  Donghyub Kang ,  Kais Azzouzi

IPC分类号： H03M13/05

CPC分类号： H03M13/1111 ,  H03M13/1108 ,  H03M13/3707

摘要： Provided is a fast stochastic decoding method for a low density parity check (LDPC) code. The decoding method may include decoding the LDPC code based on an LDPC decoding scheme, using a message expressed by a log-likelihood ratio (LLR) value.

摘要翻译： 提供了一种用于低密度奇偶校验（LDPC）码的快速随机解码方法。 解码方法可以包括使用由对数似然比（LLR）值表示的消息来基于LDPC解码方案对LDPC码进行解码。

公开(公告)号：US07437073B2

公开(公告)日：2008-10-14

申请号：US10428955

申请日：2003-05-01

申请人： Tae Yeon Kim ,  Hyeon Ho Yoon ,  Jeong Ju Yoo ,  Byoung Whi Kim ,  Hyeong Ho Lee

发明人： Tae Yeon Kim ,  Hyeon Ho Yoon ,  Jeong Ju Yoo ,  Byoung Whi Kim ,  Hyeong Ho Lee

IPC分类号： H04J14/00

CPC分类号： H04Q11/0067 ,  H04J14/02 ,  H04J14/0227 ,  H04J14/0245 ,  H04J14/0249 ,  H04J14/0282 ,  H04J14/0283 ,  H04J14/0286 ,  H04J14/0298 ,  H04Q11/0071

摘要： Disclosed herein is a system for providing dynamic service using optical sub-carrier multiplexing type multi-channel access and method of controlling the same. The system includes a plurality of optical sub-carrier multiplexing modems, an optical gigabit-Ethernet switch and a plurality of wavelength division multiplexing couplers. The optical sub-carrier multiplexing modems transmit user traffic using multiple optical sub-carrier channel control. The optical gigabit-Ethernet switch is connected to an access network upstream and to the optical sub-carrier multiplexing modems downstream to manage a plurality of wavelengths and a plurality of optical sub-carrier channels according to the wavelengths. The wavelength division multiplexing couplers connect the plurality of optical sub-carrier multiplexing modems with the optical gigabit-Ethernet switch, perform aggregation and branching of a certain wavelength and transmit it.

摘要翻译： 本文公开了一种使用光子载波复用类型多信道访问提供动态服务的系统及其控制方法。 该系统包括多个光副载波复用调制解调器，光千兆以太网交换机和多个波分多路复用耦合器。 光子载波复用调制解调器使用多个光子载波信道控制来发送用户业务。 光千兆以太网交换机连接到上游的接入网和下行的光副载波复用调制解调器，以根据波长管理多个波长和多个光子载波信道。 波分复用耦合器将多个光副载波复用调制解调器与光千兆比特以太网交换机连接起来，执行一定波长的聚合和分支并进行发送。

公开(公告)号：US07330655B2

公开(公告)日：2008-02-12

申请号：US10912340

申请日：2004-08-04

申请人： Tae Yeon Kim ,  Jeong Ju Yoo ,  Byoung Whi Kim

发明人： Tae Yeon Kim ,  Jeong Ju Yoo ,  Byoung Whi Kim

IPC分类号： H04J14/02

CPC分类号： H04J14/0282 ,  H04J14/0227 ,  H04J14/0241 ,  H04J14/0298 ,  H04Q11/0067 ,  H04Q2011/0016 ,  H04Q2011/0086

摘要： The present invention relates to a WDM/SCM-PON and a media access control method for asymmetric packet communication in the same. In the WDM/SCM-PON, each SCM channel is classified and used as a link by adopting an SCM technique of subdividing a wavelength band of up/downstream data links between an OLT and ONTs into frequency bands, and the ONTs are formed so that a certain SCM channel is independently distributed not fixedly assigned. Accordingly, an inventory problem, which can be generated in WDM/SCM, is prevented before happens, asymmetric dynamic band allocation is performed, and asymmetric service of up/downstream transmission is supported. As a result, a band required for next generation service is dynamically provided, optical interference effect is minimized, and Ethernet compatibility is provided so that Ethernet service suitable for providing IP service can be accommodated.

摘要翻译： 本发明涉及一种WDM / SCM-PON及其中的非对称分组通信的媒体接入控制方法。 在WDM / SCM-PON中，通过采用将OLT和ONT之间的上下行数据链路的波段划分成频带的SCM技术将每个SCM信道分类并用作链路，并且形成ONT，使得 某个SCM信道是独立分配的，没有固定分配。 因此，在发生之前可以防止在WDM / SCM中产生的库存问题，执行非对称动态频带分配，支持上下行传输的非对称业务。 结果，动态地提供了下一代业务所需的频带，减少了光干扰效应，提供了以太网兼容性，从而可以适应提供IP业务的以太网业务。