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公开(公告)号：KR100334909B1
公开(公告)日：2002-05-04
申请号：KR1020000002343
申请日：2000-01-19
Applicant: 한국전자통신연구원
IPC: H04B15/00
Abstract: 본 발명은 무선 통신시스템에서 채널 부호화된 신호를 혼돈 신호를 이용하여 혼돈 패턴으로 인터리빙하는 장치에 관한 것이다. 무선 채널은 신호를 왜곡시켜 통신의 질을 떨어뜨리므로, 신호의 왜곡을 감소시키기 위하여 오류 정정 채널 코딩된 신호를 인터리빙하여 전송한다. 종래의 인터리버는 규칙적인 패턴(regular pattern)을 발생시키거나, 모조 랜덤(pseudo-random) 형태의 인터리버 패턴을 만들었으나, 본 발명에서는 채널 코딩된 신호를 혼돈 신호로부터 추출해낸 혼돈 패턴으로 인터리빙시켜서 신호가 왜곡되는 것을 최소화한다.
본 발명에서는 혼돈 신호를 발생시키고 이 혼돈 신호로부터 혼돈 패턴을 추출하여 인터리빙 패턴으로 사용한다. 본 발명에서 제안하는 혼돈 인터리버는 종래의 블락 인터리버나 모조 랜덤 인터리버보다 상관 계수가 작기 때문에 페이딩의 상관성을 최소화하며, 군집 에러에 의한 신호 왜곡을 최소화할 수 있다.
이러한 본 발명은, 무선 채널 환경의 열악한 상황, 또는 이동 통신에서 단말기의 속도가 빠른 경우, 데이터 신호를 혼돈 패턴으로 인터리빙시켜 전송하고 혼돈 패턴을 디인터리빙하여 수신하는 데 이용할 수 있다.-
公开(公告)号：KR1020120070410A
公开(公告)日：2012-06-29
申请号：KR1020100131952
申请日：2010-12-21
Applicant: 한국전자통신연구원
CPC classification number: H04L12/1859
Abstract: PURPOSE: A communication node and a communication method are provided to reduce the throughput of data and to improve the using efficiency of bandwidths. CONSTITUTION: A packet broadcasting part(120) broadcasts a first type of interest packet. A packet receiving part(130) receives a responding packet with respect to the first type of interest packet. A node selecting part(140) determines one of nodes transmitting the responding packet as a selected node. A packet transmitting part(160) transmits a second type of interest packet to the selected node. A contents receiving part(170) receives data contents from the selected node. The node selecting part determines a node transmitting the earliest received responding packet as the selected node.
Abstract translation: 目的：提供通信节点和通信方法，以减少数据吞吐量并提高带宽的使用效率。 构成：分组广播部分（120）广播第一类兴趣分组。 分组接收部分（130）接收关于第一类兴趣分组的响应分组。 节点选择部分（140）确定发送响应分组的节点之一作为所选择的节点。 分组发送部分（160）向所选择的节点发送第二类兴趣分组。 内容接收部分（170）从所选择的节点接收数据内容。 节点选择部分确定发送最早接收到的响应分组的节点作为所选择的节点。
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公开(公告)号：KR100923159B1
公开(公告)日：2009-10-23
申请号：KR1020080002299
申请日：2008-01-08
Abstract: 본 발명은 패킷 기반 무선 통신 시스템에서 무선 자원을 통해 전송되는 스케줄링 정보의 양을 최소화하고 무선 자원을 통해 추가적인 제어 정보를 전송하는 경우를 줄일 수 있는 패킷 데이터 전송 및 수신 방법에 관한 것으로, 패킷 기반 무선 통신 시스템에서의 패킷 데이터 전송 방법에 있어서, (a) 패킷 데이터 전송을 위한 무선 자원 블록의 부호화 방식을 지시하는 무선 자원 블록 구분자를 설정하는 단계; (b) 상기 무선 자원 블록 구분자가 포함되고, 스케줄링 정보를 전송하기 위한 제어 신호 블록을 단말기의 그룹 식별자로 마스킹한 CRC를 적용하여 부호화하는 단계; 및 (c) 상기 패킷 데이터 전송을 위한 무선 자원 블록을 상기 무선 자원 블록 구분자가 지시하는 방식에 따라 부호화하는 단계를 포함한다.
패킷, 통신, 시스템, 무선, LTE, 자원, 제어, 블록, 데이터, 패킷, 전송-
公开(公告)号：KR1020090081311A
公开(公告)日：2009-07-28
申请号：KR1020080061646
申请日：2008-06-27
Applicant: 한국전자통신연구원
CPC classification number: H04W74/002 , H04W48/06 , H04W48/16 , H04W74/08 , H04W84/042 , H04W76/27
Abstract: A random access method in a cellular system and an apparatus thereof are provided to use radio resources efficiently by using information about whether an arbitrary access preamble index exists. A terminal(100) of a cellular system comprises a preamble transmission unit(110), an arbitrary access response message processing unit(120) and a control information transmission unit(130). The preamble transmission unit randomly selects one among sequences, set by a base station(200), and transmits the arbitrary access preamble. The arbitrary access response message processing unit receives an arbitrary access response message including a sequence of the arbitrary access preamble and loaded-state information related to the arbitrary access from the base station. The control information transmission unit generates radio resource control information transmission based on the extracted response information, and then transmits it.
Abstract translation: 提供蜂窝系统中的随机接入方法及其装置，通过使用关于是否存在任意接入前导码索引的信息来有效地使用无线电资源。 蜂窝系统的终端（100）包括前导码传输单元（110），任意访问响应消息处理单元（120）和控制信息传输单元（130）。 前导码发送单元在由基站（200）设定的序列之中随机选择一个，并发送任意的接入前导码。 任意访问响应消息处理单元接收包括任意访问前导序列的任意访问响应消息和与来自基站的任意访问相关的加载状态信息。 控制信息发送单元基于所提取的响应信息生成无线资源控制信息发送，然后发送。
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公开(公告)号：KR100877078B1
公开(公告)日：2009-01-07
申请号：KR1020060097129
申请日：2006-10-02
Applicant: 한국전자통신연구원
CPC classification number: H04L1/0072 , H04L1/0061
Abstract: 본 발명은 MBMS 수신 시스템에 있어서의 에러 정정 방법 및 장치에 관한 것이다. 본 발명은 응용 계층에서 에러 정정을 수행하는 MBMS 시스템의 단말 장치에서 에러가 발생한 PDU를 폐기하지 않고 에러 발생 여부를 표시하여 에러가 없는 PDU와 함께 응용 계층으로 전달함으로써, 에러 정정 효율을 개선할 수 있는 MBMS 수신 시스템에 있어서의 에러 정정 방법 및 장치를 제공하는데 그 목적이 있다. 본 발명의 MBMS 단말 장치는 상기 수신 데이터로부터 생성된 PDU(Protocol Data Unit)를 입력받고, 상기 PDU를 조합하여 SDU(Service Data Unit)를 생성하여 출력하며, 상기 SDU의 생성에 사용된 PDU의 에러에 대한 정보를 생성하여 출력하는 RLC(Radio Link Control) 프로토콜 처리 수단; 및 상기 SDU를 입력받아 전달하기 위한 PDCP(Packet Data Convergence Protocol) 처리 수단을 포함한다.
MBMS, Protocol Data Unit(PDU), Service Data Unit(SDU),-
Patent Agency Ranking
公开(公告)号：KR1020080084739A
公开(公告)日：2008-09-19
申请号：KR1020080023950
申请日：2008-03-14
CPC classification number: H04W76/28 , H04W52/0216 , H04W72/12 , Y02D70/00 , Y02D70/1262 , Y02D70/23 , Y02D70/24 , H04W52/02 , H04W28/18
Abstract: A method for receiving packets in a mobile communication system is provided to operate a mobile station in one of operation levels according to activity of packet data of a corresponding service, thereby achieving an efficient low-consumption operation. A mobile station receives information about inconsecutive reception operation parameters including a reception cycle from a base station(S110). The mobile station is operated in one of a first operation level at which data are received every a first reception cycle, a second operation level at which data are received every a second reception cycle shorter than the first reception cycle, and a consecutive reception level at which the packet data are consecutively received, thereby receiving packets(S170,S190). The mobile station selects one of the first operation level, the second operation level, and the consecutive operation level, according to activity of the packet data.
Abstract translation: 提供一种用于在移动通信系统中接收分组的方法，以根据相应服务的分组数据的活动来操作移动台中的一个操作级别，从而实现有效的低消耗操作。 移动站从基站接收包括接收周期的不连续接收操作参数的信息（S110）。 移动台按照第一接收周期接收数据的第一操作电平和比第一接收周期短的第二接收周期接收数据的第二操作电平，以及连续接收电平 分组数据被连续接收，从而接收分组（S170，S190）。 移动站根据分组数据的活动来选择第一操作级别，第二操作级别和连续操作级别中的一种。
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公开(公告)号：KR1020080018148A
公开(公告)日：2008-02-27
申请号：KR1020070084865
申请日：2007-08-23
Applicant: 한국전자통신연구원
CPC classification number: H04L1/1816 , H04L1/0025 , H04L1/1887 , H04L2001/0093 , H04B7/2612
Abstract: MBMS(Multimedia Broadcast Multicast Service) data transmitting and receiving methods in a packet based cellular system are provided to improve error correction efficiency of received data by an HARQ(Hybrid Automatic Repeat reQuest) scheme when transmitting MBMS data to a plurality of terminals in a point to multipoint scheme. An MBMS data transmitting method includes the steps of: transmitting schedule information of transmitting data, HARQ information, and a service group identifier for an MBMS to a plurality of terminals through an MBMS's exclusive control channel(301); transmitting exclusive feedback channel information of the terminals and unique scrambling codes of the terminals to the terminals(302); transmitting MBMS data packets to the terminals; transmitting wireless resource information of data re-transmitted by a down-link control signal to the terminals when an NACK(Negative Acknowledgement) is received from the at least one terminal through an exclusive feedback channel(304); and transmitting the re-transmitted data to the terminals(305).
Abstract translation: 提供了一种基于分组的蜂窝系统中的MBMS（Multimedia Broadcast Multicast Service，多媒体广播多播服务）数据发送和接收方法，以便在一点上向多个终端发送MBMS数据时，通过HARQ（Hybrid Automatic Repeat reQuest）方式提高接收数据的纠错效率 到多点方案。 MBMS数据发送方法包括以下步骤：通过MBMS专用控制信道（301）向多个终端发送MBMS的发送数据，HARQ信息和MBMS的业务组标识符的调度信息; 将终端的独家反馈信道信息和终端的唯一扰码发送到终端（302）; 向所述终端发送MBMS数据分组; 当通过专用反馈信道从所述至少一个终端接收到NACK（否定确认）时，将通过下行链路控制信号重新发送的数据的无线资源信息发射到终端; 以及将重新发送的数据发送到终端（305）。
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公开(公告)号：KR1020080018147A
公开(公告)日：2008-02-27
申请号：KR1020070084864
申请日：2007-08-23
CPC classification number: H04W74/008 , H04W36/08 , H04W72/14 , H04W74/0833
Abstract: A method for transmitting a response message of random access in a cellular system and a random access method using the same are provided to assign and manage a mobile station identifier by using minimum random access delay and minimum radio resources. A method for transmitting a response message of random access comprises the followings steps of: receiving a preamble from a mobile station(S301); confirming whether the mobile station includes a mobile station identifier, assigned by a base station, by using the receiving preamble(S303); if not so, allocating first scheduling information to a control information block, allocating a first response message including a mobile station identifier assigned by the base station to a downlink shared channel, and transmitting the control information block and the downlink shared channel to the mobile station(S304); and if so, allocating second scheduling information to the control information block, allocating a second response message including no mobile station identifier to the downlink shared channel, and transmitting the control information block and the downlink shared channel to the mobile station(S305).
Abstract translation: 提供一种用于在蜂窝系统中发送随机接入的响应消息的方法和使用其的随机接入方法，以通过使用最小随机接入延迟和最小无线电资源来分配和管理移动台标识符。 用于发送随机接入的响应消息的方法包括以下步骤：从移动台接收前导码（S301）; 通过使用接收前导码来确认移动站是否包括由基站分配的移动站标识符（S303）; 如果不是这样，则将第一调度信息分配给控制信息块，将包括由基站分配的移动台标识符的第一响应消息分配给下行链路共享信道，并将控制信息块和下行链路共享信道发送到移动站 （S304）; 如果是，则向所述控制信息块分配第二调度信息，向所述下行链路共享信道分配不包括移动台标识符的第二响应消息，并向所述移动台发送所述控制信息块和所述下行链路共享信道（S305）。
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公开(公告)号：KR1020070107614A
公开(公告)日：2007-11-07
申请号：KR1020070042760
申请日：2007-05-02
CPC classification number: H04L27/2601 , H04L5/0007 , H04L5/0037 , H04L5/0053
Abstract: A method for transmitting/receiving downlink scheduling information in an OFDMA(Orthogonal Frequency Division Multiple Access) system is provided to reduce the quantity of scheduling information by using a resource block having a minimum resource block index, a maximum resource block index, or a channel with a high quality. A method for transmitting/receiving downlink scheduling information in an OFDMA system includes the steps for allocating at least one of resource blocks comprising downlink resources of the OFDMA system, to each terminal(S200); selecting the resource block for each terminal on the basis of the size of indexes of each allocated resource block(S210); generating scheduling information including terminal resource allocation information and terminal discrimination information, for each terminal(S220); and transmitting the scheduling information of the terminal to each terminal by using the selected resource block(S234).
Abstract translation: 提供了一种用于在OFDMA（正交频分多址）系统中发送/接收下行链路调度信息的方法，通过使用具有最小资源块索引，最大资源块索引或信道的资源块来减少调度信息的数量 具有高品质。 在OFDMA系统中发送/接收下行链路调度信息的方法包括：向每个终端分配包括OFDMA系统的下行资源的资源块中的至少一个的步骤（S200）。 基于每个分配的资源块的索引的大小来选择每个终端的资源块（S210）; 为每个终端产生包括终端资源分配信息和终端识别信息的调度信息（S220）; 以及通过使用所选择的资源块将终端的调度信息发送给每个终端（S234）。
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公开(公告)号：KR1020070105858A
公开(公告)日：2007-10-31
申请号：KR1020070038849
申请日：2007-04-20
Applicant: 한국전자통신연구원
IPC: H04B7/26
CPC classification number: H04W68/025 , H04L5/0053 , H04W68/02 , H04W72/042 , H04B7/2612
Abstract: A method for transmitting paging information in a mobile communication system is provided to improve the utilization of limited radio resources by administrating the setting and mapping of a physical channel and a transport channel variably and flexibly. A paging channel(PCH) is formed in a transport channel corresponding to the occurrence of paging information. A paging indication channel(PICH) is set according to the paging information, and the PICH is added to radio resources of a physical layer(S140). The PCH is allocated to radio resources of the physical layer with a fixed position and a fixed size(S150). Scheduling information is allocated to a control channel of the physical layer. The scheduling information includes a scheduling identifier and radio resource allocation information. The scheduling identifier is used to distinguish between a specific terminal and a terminal group between a base station scheduler and a terminal.
Abstract translation: 提供了一种用于在移动通信系统中发送寻呼信息的方法，通过可变地和灵活地管理物理信道和传输信道的设置和映射来提高有限无线资源的利用。 在对应于寻呼信息的出现的传输信道中形成寻呼信道（PCH）。 根据寻呼信息设置寻呼指示信道（PICH），并将PICH添加到物理层的无线资源（S140）。 PCH以固定位置和固定大小分配给物理层的无线电资源（S150）。 调度信息被分配给物理层的控制信道。 调度信息包括调度标识符和无线资源分配信息。 调度标识符用于区分基站调度器和终端之间的特定终端和终端组。
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