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公开(公告)号：KR101310898B1
公开(公告)日：2013-09-25
申请号：KR1020090128411
申请日：2009-12-21
Applicant: 한국전자통신연구원
Inventor： 전선심
CPC classification number: H04N21/6338 , H04L65/4076 , H04N21/2385 , H04N21/2402 , H04N21/25808 , H04N21/6405 , H04N21/6408
Abstract: 모바일 IPTV 시스템에서, MCE(Multicast Coordination Entity)는 모든 단말들을 만족시키기 위한 무선 자원 할당에 필요한 정보를 카운팅 절차를 통하여 획득하고, 컨텐츠의 식별자별 사용 예상 부반송파의 점유율을 고려하여 무선 베어러를 결정한다. 이러한 모바일 IPTV 시스템에서 스케줄링 주체는 결정된 무선 베어러 특성에 적합하게 서로 달라진다.
MBMS, 무선 베어러, 유니캐스트, 멀티캐스트, 자원 할당-
公开(公告)号：KR101310217B1
公开(公告)日：2013-09-24
申请号：KR1020100026000
申请日：2010-03-23
Applicant: 한국전자통신연구원
Abstract: 본 발명은 무선 접속 시스템에서 멀티 캐스트 연결 식별자 할당 장치 및 방법에 관한 것으로, 보다 구체적으로 무선 접속 시스템에서 MBS(Multicast and Broadcast Service) 모드를 이용하여 사용자에게 멀티 캐스트 연결 식별자를 할당하는 장치 및 방법에 관한 것이다.
본 발명의 일 실시 예에 따른 무선 접속 시스템에서 멀티 캐스트 연결 식발자 할당 방법은, MBS 채널을 선택하고, 버퍼 할당 정책을 수행하고, 상기 버퍼 할당 정책에 따라 소정의 크기만큼의 버퍼 공간을 데이터의 타입별로 각각 할당하며, 상기 MBS 채널의 연결 요청에 따라 상기 데이터에 MCID 값을 부여하고, 상기 MCID에 해당하는 MBS 버스트 영역을 갖는 프레임을 수신하고, 상기 MCID에 대응하는 MBS 버스트 영역의 데이터를 분류하여 추출하고, 상기 추출된 데이터의 MCID에 대응하는 버퍼 영역에 상기 추출된 데이터를 저장하며. 상기 버퍼 영역에 저장된 데이터의 IP 헤더에 포함된 멀티캐스트 IP 주소 정보를 이용하여 상기 MBS 채널을 식별하여 서비스를 한다.-
公开(公告)号：KR1020130005524A
公开(公告)日：2013-01-16
申请号：KR1020110066975
申请日：2011-07-06
Applicant: 한국전자통신연구원 , 한국외국어대학교 연구산학협력단
Abstract: PURPOSE: A web based mobility guarantee method for providing service information requesting web basement, a system thereof, a recording device capable of reading with device and computer are provided to guarantee a web based mobility by performing service based handoff. CONSTITUTION: A terminal connects to a first service providing device(S510). A terminal transmits a service request signal to a first service providing device(S512). A first service providing device transmits a service availability request signal about service information as a web based service providing device based on offer possibility of service information corresponding to a service request signal(S522). A web based service providing device transmits a service availability request signal to a second service providing device(S524). A web based service providing device changes a terminal service provider from the first service providing device to the second service providing device(S536). A terminal receives a service response signal corresponding to a service request signal from a second service providing device. [Reference numerals] (AA) Terminal; (BB) First transmitter; (CC) First service providing device; (DD) Web based service providing device; (EE) Second service providing device; (FF) Second transmitter; (S510) Connecting; (S512) Service request signal through HTTP(s); (S520) Service provider A recognizes that a service is not provided by himself/herself; (S522,S524,S526) Service availability request signal(HTTP); (S528) Service provider A and service provider B exchange control information for a wireless access network handoff; (S530,S532,S534) Transmitting information; (S536) Changing from the service provider A to the service provider B; (S538) Requesting a wireless access network handoff; (S540) Disconnecting; (S542) Performing a wireless access network handoff; (S544) Service response signal through HTTP(s)
Abstract translation: 目的：提供一种基于Web的移动性保证方法，用于提供请求网页地下室的服务信息，其系统，能够利用设备和计算机读取的记录设备，以通过执行基于服务的切换来保证基于网络的移动性。 规定：终端连接到第一服务提供设备（S510）。 终端向第一服务提供装置发送服务请求信号（S512）。 第一服务提供设备基于与服务请求信号相对应的服务信息的提供可能性，将关于服务信息的服务可用性请求信号作为基于web的服务提供设备发送（S522）。 基于网络的服务提供设备向第二服务提供设备发送服务可用性请求信号（S524）。 基于网络的服务提供设备将终端服务提供商从第一服务提供设备改变为第二服务提供设备（S536）。 终端从第二服务提供设备接收与服务请求信号相对应的服务响应信号。 （附图标记）（AA）端子; （BB）第一发射机; （CC）第一服务提供设备; （DD）基于Web的服务提供设备; （EE）第二服务提供设备; （FF）第二发射机; （S510）连接; （S512）通过HTTP的服务请求信号; （S520）服务提供商A认识到服务不是由他/她自己提供的; （S522，S524，S526）服务可用性请求信号（HTTP）; （S528）服务提供商A和服务提供商B交换无线接入网切换的控制信息; （S530，S532，S534）发送信息; （S536）从服务提供商A更改为服务提供商B; （S538）请求无线接入网络切换; （S540）断开; （S542）执行无线接入网络切换; （S544）通过HTTP的服务响应信号
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公开(公告)号：KR1020120057086A
公开(公告)日：2012-06-05
申请号：KR1020100118666
申请日：2010-11-26
Applicant: 한국전자통신연구원
CPC classification number: H04W72/042 , H04W4/06 , H04W72/0453
Abstract: PURPOSE: A control method for allocating resources between multiple carriers and MBS(Multicast and Broadcast Service) therefor are provided to effectively share a multiple carrier resource area where a multicast service and a unicast service are allocated. CONSTITUTION: All base stations receive multicast resource allocation information from an upper layer(100) in a downlink. The base stations transmit multicast resource allocation request information to all portable terminals. The portable terminals exist within a cell through a broadcast transmission method. The base stations which exist within MBS area in an up or a down link transmit the multicast resource allocation information transmitted from the upper layer to the portable terminals.
Abstract translation: 目的：提供一种用于在多个载波和MBS（组播和广播业务）之间分配资源的控制方法，以有效共享分配多播业务和单播业务的多载波资源区域。 规定：所有基站在下行链路中从上层（100）接收组播资源分配信息。 基站向所有便携终端发送组播资源分配请求信息。 便携式终端通过广播传输方式存在于小区内。 存在于上行链路或下行链路的MBS区域内的基站将从上层发送的组播资源分配信息发送到便携式终端。
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公开(公告)号：KR1020120049646A
公开(公告)日：2012-05-17
申请号：KR1020100111011
申请日：2010-11-09
Applicant: 한국전자통신연구원
CPC classification number: H04L27/265 , H04L27/0008 , H04L27/0012 , H04L27/22 , H04L27/38
Abstract: PURPOSE: A receiving apparatus for providing bits of an OFDM(Orthogonal Frequency Division Multiplexing) signal for input bits of a fast Fourier transformer depending on a modulation method and a method thereof are provided to determine an adaptive FFT(Fast Fourier Transform) input bit number by detecting the change of the number of minimum input bits of a FFT engine depending on a modulation method. CONSTITUTION: A modulation method determining unit(400) determines a modulation method for an OFDM(Orthogonal Frequency Division Multiplexing) signal received in an OFDM system. An input bit determination unit(410) provides high 7 bits of the OFDM signal for input bits of a fast Fourier transformer in case of a QPSK(Quadrature Phase Shift Keying) signal. The input bit determination unit provides high 8 bits of the OFDM signal for the input bit of the fast Fourier transformer in case of a 16 QAM(Quadrature Amplitude Modulation) signal. A modulation method determining unit changes received OFDM signals into digital signals. The modulation method determining unit determines a modulation method for signals from which CP(Cyclic Prefix) is removed.
Abstract translation: 目的：提供一种用于根据调制方法及其方法提供用于快速傅立叶变换器的输入比特的OFDM（正交频分复用）信号的比特的接收装置，以确定自适应FFT（快速傅里叶变换）输入比特数 通过根据调制方法检测FFT引擎的最小输入位数的变化。 构成：调制方法确定单元（400）确定在OFDM系统中接收的OFDM（正交频分复用）信号的调制方法。 在QPSK（正交相移键控）信号的情况下，输入比特确定单元（410）为快速傅里叶变换器的输入比特提供高的7比特的OFDM信号。 在16QAM（正交幅度调制）信号的情况下，输入比特确定单元为快速傅立叶变换器的输入比特提供高8位的OFDM信号。 调制方法确定单元将接收到的OFDM信号改变为数字信号。 调制方法确定单元确定去除CP（循环前缀）的信号的调制方法。
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Patent Agency Ranking
公开(公告)号：KR1020100085871A
公开(公告)日：2010-07-29
申请号：KR1020100005162
申请日：2010-01-20
Applicant: 한국전자통신연구원
Abstract: PURPOSE: A method and an apparatus for transmitting and receiving data in a wireless communication network are provided to improve the through of an entire system by allocating the resources for data transmission and reception only to the stations of a VHT system in a set protection section. CONSTITUTION: It is informed that a non-VHT-station exists in a wireless communication network(122), and a message indicating that data are supposed to be transmitted to plural VHT-stations is transmitted for the non-VHT-station and a VHT-station which exist in the wireless communication network(124). The resource allocation information for the plural VHT-stations is transmitted(126), and the data are transmitted to the plural VHT-stations according to the resource allocation information(130).
Abstract translation: 目的：提供一种用于在无线通信网络中发送和接收数据的方法和装置，以通过仅将数据发送和接收的资源分配给设置保护部分中的VHT系统的站来改善整个系统的通过。 构成：通知在无线通信网络（122）中存在非VHT站，并且向非VHT站发送指示数据被发送到多个VHT站的消息，并且VHT 存在于无线通信网络（124）中。 发送多个VHT站的资源分配信息（126），并且根据资源分配信息将数据发送到多个VHT站。
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公开(公告)号：KR1020090065170A
公开(公告)日：2009-06-22
申请号：KR1020070132633
申请日：2007-12-17
CPC classification number: H04W52/24 , H04L1/004 , H04W52/20 , H04W52/241
Abstract: A method for controlling a reference power ratio by using a reference channel is provided to buff phenomena that power is temporarily increased or power is temporarily decreased. A change amount of a receiving SINR(Signal-to-Interference-plus-Noise Ratio) is calculated by calculating a difference between an average SINR of a calculated previous channel window section and an average SINR of a calculated present channel window section(S250). Detection of error is checked. A reference SINR is controlled by using the receiving SINR and the change amount(S260).
Abstract translation: 提供了通过使用参考通道来控制参考功率比的方法用于暂时增加功率或暂时降低功率的抛光现象。 通过计算计算出的前一通道窗口部分的平均SINR与计算出的当前通道窗口部分的平均SINR之间的差来计算接收SINR（信号与干扰加噪声比）的变化量（S250） 。 检查错误。 通过使用接收SINR和变化量来控制参考SINR（S260）。
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公开(公告)号：KR100874006B1
公开(公告)日：2008-12-17
申请号：KR1020070029130
申请日：2007-03-26
Applicant: 한국전자통신연구원
Abstract: A DFT(Discrete Fourier Transform) device and its control method are provided to process DFT input vectors of various resources while minimizing the amount of calculation of a multiplier by the size of DFTs. A stage memory(310) stores data of each user. An address calculator(320) designates the output of each data stored in the memory and generates cosine and sine coefficients. A cosine/sine signal generator(330) designates outputs of the cosine and sine coefficients. A multiplier(340) multiplies each data, which are outputted from the memory, and the cosine and sine coefficients designated by the cosine and sine signal generator. An adder(350) adds values multiplied by the multiplier. The address calculator designates the output order of the data stored in the memory according to an input address value, and outputs the data stored in the memory according to the designated order.
Abstract translation: 提供DFT（离散傅里叶变换）装置及其控制方法来处理各种资源的DFT输入向量，同时使乘法器的计算量最小化为DFT的大小。 舞台存储器（310）存储每个用户的数据。 地址计算器（320）指定存储在存储器中的每个数据的输出并产生余弦和正弦系数。 余弦/正弦信号发生器（330）指定余弦和正弦系数的输出。 乘法器（340）将从存储器输出的每个数据与由余弦和正弦信号发生器指定的余弦和正弦系数相乘。 加法器（350）将乘以乘法器的值相加。 地址计算器根据输入地址值指定存储在存储器中的数据的输出顺序，并根据指定顺序输出存储在存储器中的数据。
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公开(公告)号：KR100601118B1
公开(公告)日：2006-07-19
申请号：KR1020040108243
申请日：2004-12-17
Applicant: 한국전자통신연구원
CPC classification number: H04W72/0406 , H04W72/0413 , H04W72/042
Abstract: 본 발명은 패킷 데이터 서비스를 위한 무선자원 할당 시스템 및 무선자원 할당 방법에 관한 것이다.
본 발명의 기지국은 단말기와의 무선 접속을 수행하는 물리계층부와 단말기로부터 서비스별 자원할당 요구가 있는 경우 단말기에 대한 서비스별 자원할당을 수행하는 MAC 계층부를 가진다. 제어국은 기지국과 유선 네트워크를 통해 망과의 인터페이스를 수행하는데, 본 발명의 기지국은 MAC 계층부로부터 서비스별 자원할당 결과를 보고받는 상위계층부를 가진다.
본 발명에 따르면, 물리계층의 제어부분 영역에 위치하는 MAC 계층부가 무선 자원을 관리하기 때문에 계층간의 중복된 기능으로 인해 낭비되는 제어 시간을 줄이고 좀더 빠르고 효율적으로 제어를 실행할 수 있다.
자원할당, MAC, 서비스별 자원, 패킷 통신-
公开(公告)号：KR100426621B1
公开(公告)日：2004-04-13
申请号：KR1020010081908
申请日：2001-12-20
Applicant: 한국전자통신연구원
IPC: H04B1/7073
CPC classification number: H04B1/70754
Abstract: An apparatus and method of searching a preamble signal in a search window for reducing a chip size of a preamble searcher in a transceiver of a base station is enclosed. By using a plurality of small window preamble searchers searching the preamble signal in a small search window, which is a division of a large search windows of a conventional preamble searcher divided by search start times, the preamble searcher of the entire search window can be implemented and the size of semiconductor chip is reduced by implementing distributing small preamble searcher in a small semiconductor chips.
Abstract translation: 包括在搜索窗口中搜索前导码信号以减少基站的收发器中的前导码搜索器的码片大小的设备和方法。 通过使用多个小窗口前导码搜索器在小搜索窗口中搜索前导码信号，该小搜索窗口是传统前导码搜索器的大搜索窗口的划分，除以搜索开始时间，可以实现整个搜索窗口的前导码搜索器 并且通过在小型半导体芯片中实施分发小型前导码搜索器来减小半导体芯片的尺寸。
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