公开(公告)号：KR1020080052218A

公开(公告)日：2008-06-11

申请号：KR1020070053337

申请日：2007-05-31

Applicant: 한국전자통신연구원

Inventor： 홍승은 ,  권호진 ,  권오형 ,  이수인

IPC: H04L12/835 ,  H04B3/00 ,  H04L12/18

CPC classification number: H04L47/10 ,  H04L47/263 ,  H04L47/30 ,  H04N21/2221 ,  H04N21/2402

Abstract: A method for controlling downstream traffic flow in a cable network headend is provided to enable a traffic source to control transmission rate of a traffic transmitted to an E-QAM(Edge Quadruple Amplitude Modulator), and further to protect overflow or underflow of a receiving buffer, packet loss or channel usage rate deterioration. A method for controlling downstream traffic flow in a cable network headend includes the following steps. An M-CMTS(Modular Cable Modem Termination System) core(701) transmits an ICRQ(Incoming Call Request) message(710) to an E-QAM(702), and requests session setup. The E-QAM transmits an ICRP(Incoming Call Reply) message(720), including a DEPI(Downstream External PHY Interface) resource assignment response AVP(Attribute Value Pair) as a response to a DEPI resource assignment request in the ICRQ message, to the M-CMTS core. The M-CMTS core generates a buffer state report criterion AVP on the basis of the number of flows and transmits an ICCN(Incoming Call Connected) message(730), including the buffer state report criterion AVP, to the E-QAM for completing the session setup. The E-QAM sets up a buffer report criterion on the buffer state report criterion AVP, and reports the buffer state according to the set criterion.

Abstract translation: 提供了一种用于控制有线网络前端中的下游业务流的方法，以使业务源能够控制传输到E-QAM（边缘四倍幅调制器）的业务的传输速率，并进一步保护接收缓冲区的上溢或下溢 ，丢包或信道使用率恶化。 一种用于控制有线网络前端中的下行业务流的方法包括以下步骤。 M-CMTS（模块化电缆调制解调器终端系统）核心（701）将ICRQ（来电请求）消息（710）发送到E-QAM（702），并请求会话建立。 E-QAM作为对ICRQ消息中的DEPI资源分配请求的响应，发送包括DEPI（下游外部PHY接口）资源分配响应AVP（属性值对）的ICRP（来电回复）消息（720），到 M-CMTS核心。 M-CMTS核心基于流量产生缓冲状态报告准则AVP，并将包括缓冲状态报告准则AVP的ICCN（进入呼叫连接）消息（730）发送到E-QAM，以完成 会话设置。 E-QAM在缓冲状态报告标准AVP上建立缓冲报告标准，并根据设定的标准报告缓冲状态。

公开(公告)号：KR1020080052147A

公开(公告)日：2008-06-11

申请号：KR1020070032290

申请日：2007-04-02

Applicant: 한국전자통신연구원

Inventor： 권은정 ,  이호숙 ,  권오형 ,  이수인

IPC: H04L12/911 ,  H04L12/891 ,  H04B3/00

CPC classification number: H04L47/626 ,  H04L12/2898 ,  H04L47/6275

Abstract: A system and a method for scheduling an upstream bandwidth supporting channel coupling are provided to generate and schedule a MAP message for providing the structure of an upstream scheduler and using the upstream bandwidth efficiently, thereby enabling a CM(Cable Modem) transmitting upstream data burst through channel coupling or a single channel to secure a short delayed time and a high data throughput. A system for scheduling an upstream bandwidth comprises a receiving block(400), a scheduler block(410), and a downstream processing block(430). The receiving block receives bandwidth request information from at least one network connection device connected to a subscriber terminal. The scheduler block calculates the size of a competition section as the bandwidth request information is received, allocates a bandwidth size corresponding to the bandwidth request information to all upstream channels configuring an SID cluster when bandwidth corresponding to the bandwidth request information can not be allocated to only an upstream channel in the SID cluster of the network connection device, and generates a MAP message in which the bandwidth size and the competition section allocated to each upstream channel are set up. The downstream processing block transmits the generated MAP to the network connection device.

Abstract translation: 提供了一种用于调度上行带宽支持信道耦合的系统和方法，用于生成和调度MAP消息，用于提供上游调度器的结构，并有效地使用上行带宽，从而使CM（有线调制解调器）能够通过 信道耦合或单个信道以确保短的延迟时间和高的数据吞吐量。 用于调度上行带宽的系统包括接收块（400），调度器块（410）和下游处理块（430）。 接收块从连接到用户终端的至少一个网络连接设备接收带宽请求信息。 当接收到带宽请求信息时，调度器块计算竞争部分的大小，当与带宽请求信息相对应的带宽不能分配给仅对于配置SID簇的所有上行信道时，分配对应于带宽请求信息的带宽大小 在网络连接装置的SID簇中的上行信道，生成MAP消息，在该MAP消息中，分配给每个上行信道的带宽大小和竞争部分被建立。 下游处理块将生成的MAP发送到网络连接装置。

公开(公告)号：KR1020080050988A

公开(公告)日：2008-06-10

申请号：KR1020070083981

申请日：2007-08-21

Applicant: 한국전자통신연구원

Inventor： 김태균 ,  권오형 ,  이수인

IPC: G06F9/44

CPC classification number: G06F3/123 ,  G06F1/1683

Abstract: A method for updating a software of a modem in a cable network is provided to prevent unreliable cable modems from receiving additional services provided in the future by enabling only reliable cable modems to update software. A method for updating a software of a modem in a cable network comprises the following several steps. A management server eliminates cable modems, whose models are different from registered models, from an update target list(201). The management server eliminates cable modems, which uses excessively the number of requested units, from the update target list because the cable modems do not guarantee reliability(202). If a manager executes an update program, an update server selects one among target cable modems and checks the kind of the selected cable modem(203). The update server selects the kind of an MIB(Management Information Base) to be applied to the checked kind of the cable modem(204). Then, the update server checks information of the cable modem for determining whether the cable modem is a software update target or not(205). If the cable modem is a software update target, the update server performs a software update procedure(206) and checks whether the update procedure is normal(207).

Abstract translation: 提供了一种用于更新有线网络中的调制解调器的软件的方法，以通过仅使可靠的电缆调制解调器更新软件来防止不可靠的电缆调制解调器接收将来提供的附加服务。 用于更新有线网络中的调制解调器的软件的方法包括以下几个步骤。 管理服务器从更新目标列表（201）中消除了与注册型号不同的电缆调制解调器。 由于电缆调制解调器不能保证可靠性，管理服务器消除了更新目标列表中使用过多请求单元数量的电缆调制解调器（202）。 如果管理员执行更新程序，则更新服务器在目标电缆调制解调器中选择一个并检查所选择的电缆调制解调器的种类（203）。 更新服务器选择要应用于所选种类的电缆调制解调器（204）的MIB（管理信息库）的种类。 然后，更新服务器检查电缆调制解调器的信息，以确定电缆调制解调器是否是软件更新目标（205）。 如果电缆调制解调器是软件更新目标，则更新服务器执行软件更新过程（206）并检查更新过程是否正常（207）。

公开(公告)号：KR100835984B1

公开(公告)日：2008-06-09

申请号：KR1020060123879

申请日：2006-12-07

Applicant: 한국전자통신연구원

Inventor： 조용성 ,  권오형 ,  이수인

IPC: H04N21/4623 ,  H04N7/10

CPC classification number: H04N21/458 ,  H04L27/36 ,  H04N21/4181 ,  H04N21/4343

Abstract: A method and an apparatus for upgrading a limited reception system in digital cable broadcasting are provided to enable a headend to transmit a limited reception system upgrade message to a cable card directly, thereby solving a problem that manpower and time is wasted when the program of the cable card is upgraded. A method for upgrading a limited reception system in digital cable broadcasting of an open cable scheme comprises the following steps of: receiving a limited reception system upgrade message from a headend(720); transmitting a limited reception system upgrade request message to an STB(Set-Top Box) in correspondence to the received limited reception system upgrade message(709); receiving a system upgrade response message from the STB receiving the limited reception system upgrade request message(703); receiving and applying a system upgrade program from the headend in correspondence to the system upgrade response message(727,731,733); and notifying the STB and the headend of the application of the system upgrade program(735).

Abstract translation: 提供了一种用于升级数字有线广播中的受限接收系统的方法和装置，以使得头端可以直接向有线卡发送有限的接收系统升级消息，从而解决当人力和时间浪费的问题， 有线卡升级。 一种用于升级开放电缆方案的数字有线广播中的有限接收系统的方法包括以下步骤：从头端（720）接收有限的接收系统升级消息; 根据接收到的有限接收系统升级消息，向STB（机顶盒）发送有限的接收系统升级请求消息; 从接收到受限接收系统升级请求消息的STB接收系统升级响应消息; 对应于系统升级响应消息（727,731,733）从前端接收和应用系统升级程序; 并通知STB和系统升级程序应用的前端（735）。

公开(公告)号：KR100831900B1

公开(公告)日：2008-05-23

申请号：KR1020060124181

申请日：2006-12-07

Applicant: 한국전자통신연구원

Inventor： 오혜주 ,  이호숙 ,  권오형 ,  이수인

IPC: H04B10/25 ,  H04L12/28 ,  H04B10/00

CPC classification number: H04L12/28 ,  H04L12/56 ,  H04L2012/6448

Abstract: A cable modem termination apparatus for a hybrid fiber coaxial network is provided to simplify table information to use a memory efficiently and facilitate data debugging and updating, thereby performing the MAC protocol processing of a cable modem efficiently. An MAC(Media Access Control) protocol processor(220) manages functions of processing the initial setting of cable modems and MAC management messages necessary for providing a service in the interaction with plural cable modems configuring a network as one of the MAC control functions of a cable modem termination apparatus. The MAC protocol processor receives information about an MAC domain and information about a logical uplink channel(211) from an operator through an operator I/O(Input/Output) controller(210). The operator I/O controller includes an interface for outputting set control information to the operator. Network control information inputted through the operator I/O controller is divided into operation policy information, uplink channel information, and downlink channel information in the MAC protocol processor and is respectively stored in the table storage unit(250) of a memory space allocated for MAC protocol processing. The table storage unit includes a downlink channel information table, an uplink channel information table, and an operation policy setting table. The network control information divided by the MAC protocol processor is recorded in the predetermined fields of various tables.

Abstract translation: 提供了一种用于混合光纤同轴网络的电缆调制解调器终端装置，用于简化表信息以有效地使用存储器，并促进数据调试和更新，从而有效地执行电缆调制解调器的MAC协议处理。 MAC（媒体访问控制）协议处理器（220）管理处理电缆调制解调器的初始设置的功能和在与配置网络的多个有线调制解调器的交互中提供服务所需的MAC管理消息，作为一个MAC控制功能之一 电缆调制解调器终端设备。 MAC协议处理器通过操作员I / O（输入/输出）控制器（210）从操作者接收关于MAC域的信息和关于逻辑上行链路信道（211）的信息。 操作员I / O控制器包括用于向操作者输出设定控制信息的接口。 通过操作员I / O控制器输入的网络控制信息被划分为MAC协议处理器中的操作策略信息，上行链路信道信息和下行链路信道信息，并分别存储在分配给MAC的存储器空间的表存储单元（250）中 协议处理。 表存储单元包括下行链路信道表，上行链路信道表和操作策略设定表。 由MAC协议处理器划分的网络控制信息被记录在各种表的预定字段中。

公开(公告)号：KR100789913B1

公开(公告)日：2008-01-02

申请号：KR1020060094980

申请日：2006-09-28

Applicant: 한국전자통신연구원

Inventor： 오혜주 ,  홍승은 ,  권오형 ,  이수인

IPC: H04L29/02 ,  H04L12/00

CPC classification number: H04L12/2801

Abstract: A method for setting up the fast initialization of a cable modem is provided to reduce the loss of resources by allowing a cable modem termination system to allocate only a predetermined length of request band to the cable modem. A method for setting up the fast initialization of a cable modem includes the steps of: transmitting a synchronization message to the cable modem(601), and receiving a ranging message from the cable modem(602); transmitting a ranging response message according as a bit requesting periodical band allocation is set in the received ranging message(603); allocating a first band for receiving a band allocation request message from the cable modem, and receiving the band allocation request message(606); allocating a second band requested by the received band allocation request message; and receiving a registration request message from the cable modem through the allocated second band, and transmitting a registration response message(612).

Abstract translation: 提供了一种用于建立电缆调制解调器的快速初始化的方法，以通过允许电缆调制解调器终端系统仅向电缆调制解调器分配预定长度的请求频带来减少资源损失。 一种用于建立电缆调制解调器的快速初始化的方法包括以下步骤：向电缆调制解调器发送同步消息，并从电缆调制解调器接收测距消息; 在所接收的测距消息（603）中设置发送根据请求周期频带分配的测距响应消息; 从所述电缆调制解调器分配用于接收频带分配请求消息的第一频带，以及接收所述频带分配请求消息（606）; 分配由所接收的频带分配请求消息请求的第二频带; 以及通过所分配的第二频带从电缆调制解调器接收注册请求消息，并发送注册响应消息（612）。

公开(公告)号：KR100768105B1

公开(公告)日：2007-10-18

申请号：KR1020050121053

申请日：2005-12-09

Applicant: 한국전자통신연구원

Inventor： 정준영 ,  권오형 ,  이수인

IPC: H04L12/28 ,  H04L1/00 ,  H04N21/434 ,  H04N21/4385

CPC classification number: H04L12/2801 ,  H04L1/0083 ,  H04N21/434 ,  H04N21/4381 ,  H04N21/4385

Abstract: 본 발명은 국제 규격인 오픈케이블(OpenCable) 표준을 따르는 디지털 케이블 TV 수신기 또는 셋톱 단말기의 복조기에서 처리된 엠펙-2 전송스트림(MPEG-2 TS) 패킷에 대한 오류 정보를 케이블카드(CableCARD
TM )를 거쳐 엠펙-2(MPEG-2) 디코더로 전달하기 위한 다중화 및 역다중화 장치와 그를 이용한 다중화 및 역다중화 방법에 관한 것으로, 프리-헤더 생성 시, 복조기로부터 전송스트림 패킷의 오류 신호를 입력받아, 상기 입력된 오류 신호에 따라 상기 전송스트림 패킷의 오류 플래그를 설정하여 프리-헤더를 생성하고, 상기 생성된 프리-헤더를 전송스트림 패킷에 삽입하여 케이블카드 엠펙 패킷을 생성한 후, 케이블카드 엠펙 패킷을 전송하며, 역다중화기에서는 프리-헤더 정보를 기반으로 역다중화하여 각 채널별로 전송스트림을 분리하고, 프리-헤더의 오류 플래그 값을 확인하여 패킷 오류 신호를 생성하여 출력하며, 디코더에서는 패킷 오류 신호를 이용하여 오류 은닉 또는 에러 복구 등과 같은 오류 제어를 수행한다.
Multi-stream, CableCARD, OpenCable, Packet Error, 복조, 디코더, 전송스트림

公开(公告)号：KR100768106B1

公开(公告)日：2007-10-17

申请号：KR1020060091425

申请日：2006-09-20

Applicant: 한국전자통신연구원

Inventor： 진은숙 ,  권오형 ,  이수인

IPC: H04L27/22 ,  H04L27/00

Abstract: 1. 청구범위에 기재된 발명이 속한 기술분야
본 발명은 디지털 수신기의 복조 알고리즘 성능 측정을 위해 타이밍 위상 에러의 분해능을 증가시키기 위한 타이밍 위상 에러 생성 방법에 관한 것임.
2. 발명이 해결하려고 하는 기술적 과제
본 발명은 디지털 수신기의 복조 알고리즘 성능 측정(시뮬레이션)을 위한 타이밍 위상 에러를 생성하는데 있어서, 정합 필터의 위상을 변화시켜 타이밍 위상 에러의 분해능을 증가시킴으로써, 성능 측정(시뮬레이션)을 위한 메모리와 계산량을 줄이기 위한, 디지털 수신기의 복조 알고리즘 성능 측정을 위해 타이밍 위상 에러의 분해능을 증가시키기 위한 타이밍 위상 에러 생성 방법을 제공하는데 그 목적이 있음.
3. 발명의 해결방법의 요지
본 발명은, 디지털 수신기의 복조 알고리즘 성능 측정을 위해 타이밍 위상 에러의 분해능을 증가시키기 위한 타이밍 위상 에러 생성 방법에 있어서, 정합 필터의 계수를 타이밍 위상 에러의 최소 분해능 단위로 오버 샘플링하여 저장하는 단계; 생성하고자 하는 타이밍 위상 에러 시간만큼 상기 정합 필터의 계수들을 지연시키는 단계; 및 상기 오버 샘플링되어 저장된 정합 필터 계수 값 및 상기 지연된 정합 필터 계수들을 바탕으로 시스템이 요구하는 오버 샘플링 율만큼의 타이밍 위상 에러를 생성하는 단계를 포함한다.
4. 발명의 중요한 용도
본 발명은 디지털 수신기의 복조 알고리즘 성능 측정을 위한 타이밍 위상 에러 생성 등에 이용됨.
복조 알고리즘, 시뮬레이션, 타이밍 위상 오류

公开(公告)号：KR1020070057637A

公开(公告)日：2007-06-07

申请号：KR1020060069904

申请日：2006-07-25

Applicant: 한국전자통신연구원

Inventor： 최동준 ,  유웅식 ,  권오형 ,  이수인

IPC: H04L12/28 ,  H04L12/66

CPC classification number: H04L12/2885 ,  H04Q2213/13012

Abstract: An IP(Internet Protocol) data transmitter using an existing transmission system and a wideband downstream transmission system in an HFC(Hybrid Fiber Coaxial) network and a method therefor are provided to enable a wideband downstream cable modem developed under new standards to effectively offer an IP-based data transmission service which will be provided from an advanced cable network, at low cost, together with a CMTS(Cable Modem Terminal System) within an existing headend. A headend unit(100) receives data from an application server system(101) which is a service providing device, separates general user data from a management message, and determines whether to transmit the user data through a wideband or existing service band, then transmits the user data through an HFC network(104). A user cable terminal unit(105) receives the separated data sent from the headend unit(100) through the HFC network(104) to send the received data to an IP-based user device(108), and delivers the management message delivered from the user device(108) through the existing transmission system.

Abstract translation: 提供了使用HFC（混合光纤同轴）网络中的现有传输系统和宽带下行传输系统的IP（因特网协议）数据发射机及其方法，使得能够以新标准开发的宽带下行电缆调制解调器有效地提供IP 的数据传输服务，其将以现有头端中的CMTS（有线调制解调器终端系统）与低成本的高级有线网络一起提供。 前端单元（100）从作为服务提供设备的应用服务器系统（101）接收数据，将一般用户数据与管理消息分离，并且确定是否通过宽带或现有服务频带发送用户数据，然后发送 用户数据通过HFC网络（104）。 用户电缆终端单元（105）通过HFC网络（104）接收从头端单元（100）发送的分离数据，将接收到的数据发送到基于IP的用户设备（108），并传送从 用户设备（108）通过现有的传输系统。

公开(公告)号：KR1020070013984A

公开(公告)日：2007-01-31

申请号：KR1020050123814

申请日：2005-12-15

Applicant: 한국전자통신연구원

Inventor： 최동준 ,  권오형 ,  이수인

IPC: H04L29/06 ,  H04L12/28 ,  H04L12/20 ,  H04L12/16

CPC classification number: H04L69/323 ,  H04L12/18 ,  H04L12/2801 ,  H04L27/36

Abstract: An apparatus and a method for multimedia data transmission and reception in a cable network using a broadband and physical layer frame structure are provided to adopt a newly developed technique later easily and perform a unified service of a communication and a broadcasting while supplying a backward compatibility. In an apparatus for multimedia data transmission in a cable network using a broadband and physical layer frame structure, an external network matching unit(305) transmits an external network and input/output data to a DOCSIS(Data Over Cable Service Interface Specification) MAC level. A DOCSIS MAC processing unit(306) transmits the data outputted from the external network matching unit(305) to a specific destination. A first downward physical layer processing unit(307) processes an existing specification transmission among the data outputted from the DOCSIS MAC processing unit(306). A second downward physical layer processing unit(308) processes a new broadband transmission among the data outputted from the DOCSIS MAC processing member(306). An upward physical layer processing member(309) transmits the received data to the DOCSIS MAC processing member(306).

Abstract translation: 提供一种使用宽带和物理层帧结构的有线网络中的多媒体数据发送和接收的装置和方法，以便容易地采用新开发的技术，并且在提供向后兼容性的同时执行通信和广播的统一服务。 在使用宽带和物理层帧结构的有线网络中进行多媒体数据传输的装置中，外部网络匹配单元（305）将外部网络和输入/输出数据发送到DOCSIS（电缆数据服务接口规范）MAC级别 。 DOCSIS MAC处理单元（306）将从外部网络匹配单元（305）输出的数据发送到特定目的地。 第一下行物理层处理单元（307）处理从DOCSIS MAC处理单元（306）输出的数据中的现有指定传输。 第二向下物理层处理单元（308）处理从DOCSIS MAC处理构件（306）输出的数据之间的新的宽带传输。 向上物理层处理构件（309）将所接收的数据发送到DOCSIS MAC处理构件（306）。