-
公开(公告)号：KR100915005B1
公开(公告)日：2009-09-02
申请号：KR1020070074433
申请日：2007-07-25
IPC: H04B7/26
Abstract: 본 발명은 방송 신호 전송 방법 및 랜덤액세스 프리앰블 전송 방법에 관한 것이다.
본 발명에서 기지국은 기지국이 포함된 셀 특성에 따라서 프리앰블 전송에 사용되는 메시지 맵을 이동국이 선택할 수 있도록 맵 인덱스를 방송 신호에 포함 시켜 전송한다. 이를 수신한 이동국은 복수의 메시지 맵 중에서 현재 이동국이 속한 셀의 특성에 맞는 메시지 맵을 선택하고, 선택된 메시지 맵을 이용하여 랜덤액세스 프리앰블을 구성하여 전송한다.-
公开(公告)号：KR100901873B1
公开(公告)日：2009-06-09
申请号：KR1020070115446
申请日：2007-11-13
Abstract: 본 발명은 방송채널 신호 송신 방법 및 수신 방법에 관한 것이다.
본 발명에서, 송신기는 매 방송채널 신호 송신 시마다 적용하는 심벌 매핑 패턴을 변경하여 방송채널 신호를 송신한다.
또한, 매 방송채널 송신 시마다 적용하는 심벌 매핑 패턴의 변화를 나타내는심벌 매핑 규칙을 각 셀 마다 다르게 적용하여 방송채널 신호를 전송할 수도 있다.
BCH, 소프트 컴바이닝, 심벌 매핑, 방송채널-
公开(公告)号：KR100888500B1
公开(公告)日：2009-03-12
申请号：KR1020070078967
申请日：2007-08-07
Applicant: 한국전자통신연구원
Abstract: 본 발명은 OFDM 셀룰러 시스템에서의 동기 채널 및 방송 채널(broadcast channel)의 전송 방법 및 장치에 관한 것으로, 서로 다른 복수의 동기 채널 프리앰블과 서로 다른 복수의 방송 채널을 다중화하고, 상기 복수의 동기 채널 프리앰블과 상기 복수의 방송 채널을 프리코딩할 때 사용할 복수의 프리코딩 벡터를 선택하고, 상기 복수의 동기 채널 프리앰블 및 상기 복수의 방송 채널 각각과 상기 복수의 프리코딩 벡터 중 상기 복수의 동기 채널 프리앰블 및 상기 복수의 방송 채널 각각에 대응하는 프리코딩 벡터를 곱하여 프리코딩한다.
동기 채널 전송, 방송 채널 전송, 빔형성-
公开(公告)号：KR1020090009694A
公开(公告)日：2009-01-23
申请号：KR1020080042907
申请日：2008-05-08
Applicant: 한국전자통신연구원
IPC: H04B1/7083
CPC classification number: H04W48/16 , H04B1/70735 , H04B7/2656 , H04J11/0069 , H04L7/043 , H04L27/2613 , H04L27/2655 , H04W56/00 , H04W72/042 , H04W72/0446 , H04W88/08
Abstract: A method for generating a downlink frame and a method for searching a cell are provided to improve cell searching performance by reducing interference between sectors by scrambling a short sequence to a scrambling sequence. A first shot sequence and a second short sequence expressing cell group information are generated. A first scrambling sequence and a second scrambling sequence determined by the first synchronous signal are generated. A third scrambling sequence determined by the first shot sequence and a fourth scrambling sequence determined by the second short sequence are generated. The first shot sequence is scrambled to the first scrambling sequence. The second short sequence is scrambled to the second scrambling sequence and the third scrambling sequence. The second short sequence is scrambled to the first scrambling sequence. The first shot sequence is scrambled to the second scrambling sequence and fourth scrambling sequence(S510). A down link frame including the first short sequence scrambled to the first scrambling sequence, the second short sequence scrambled to the second scrambling sequence and the third scrambling sequence, the second short sequence scrambled to the first scrambling sequence, and the first short sequence scrambled to the second scrambling sequence and the fourth scrambling sequence is generated(S530). The frame of the inputted downlink signal is transmitted through the transmission antenna(S540).
Abstract translation: 提供了一种用于生成下行链路帧的方法和用于搜索小区的方法，以通过将短序列加扰到加扰序列来减少扇区之间的干扰来改善小区搜索性能。 生成表示单元组信息的第一次序列和第二个短序列。 产生由第一同步信号确定的第一加扰序列和第二加扰序列。 产生由第一短播序列确定的第三加扰序列和由第二短序列确定的第四加扰序列。 第一个播放序列被加扰到第一个加扰序列。 第二短序列被加扰到第二加扰序列和第三加扰序列。 将第二短序列加扰到第一加扰序列。 将第一播放序列加扰到第二加扰序列和第四加扰序列（S510）。 包括被加扰到第一加扰序列的第一短序列的下行链路帧，被加扰到第二加扰序列的第二短序列和第三加扰序列，加扰到第一加扰序列的第二短序列，以及加扰到 产生第二加扰序列和第四加扰序列（S530）。 通过发送天线发送输入的下行链路信号的帧（S540）。
-
公开(公告)号：KR1020090009693A
公开(公告)日：2009-01-23
申请号：KR1020080042444
申请日：2008-05-07
Applicant: 한국전자통신연구원
CPC classification number: H04W48/16 , H04B1/70735 , H04B7/2656 , H04J11/0069 , H04L7/043 , H04L27/2613 , H04L27/2655 , H04W56/00 , H04W72/042 , H04W72/0446 , H04W88/08
Abstract: A method for generating a downlink frame and a method for searching a cell are provided to reduce interference between sectors by scrambling a short sequence to a scrambling sequence. A sequence generator generates a plurality of short sequences and a plurality of scrambling sequences for reducing the adjacent cell interference and transmits the generated sequence to a synchronization signal generator(S510). The synchronization signal generator generates a secondary synchronization signal by using the short sequence and the scrambling sequence received from the sequence generator(S520). A frequency mapping unit generates a downlink frame by mapping data to be transmitted to time and frequency domains by using transmission traffic data and the secondary synchronization signal generated in the synchronization signal generator(S530). An OFDM transmitter transmits the frame of the downlink signal through a transmission antenna(S540).
Abstract translation: 提供了一种用于产生下行链路帧的方法和用于搜索小区的方法，以通过将短序列加扰到加扰序列来减少扇区之间的干扰。 序列生成器生成多个短序列和多个加扰序列，用于减少相邻小区干扰，并将生成的序列发送到同步信号发生器（S510）。 同步信号发生器通过使用从序列发生器接收的短序列和加扰序列产生辅同步信号（S520）。 频率映射单元通过使用在同步信号发生器中产生的传输业务数据和次同步信号，映射要发送到时域和频域的数据来生成下行链路帧（S530）。 OFDM发射机通过发送天线发送下行链路信号的帧（S540）。
-
Patent Agency Ranking
公开(公告)号：KR1020090006763A
公开(公告)日：2009-01-15
申请号：KR1020080066782
申请日：2008-07-10
Applicant: 한국전자통신연구원
CPC classification number: H04W56/00 , H04J11/0069 , H04J11/0076 , H04L25/03866 , H04L27/2613 , H04L27/2655 , H04L27/2656 , H04L27/2657 , H04L27/2662 , H04W48/16
Abstract: A method for generating a downlink frame and a cell search method are provided to equalize the inter-sector interference. A sequence generation part produces the first shot sequence for showing cell group information and the second short sequence(S510), generates the first scrambling sequence determined by the first synchronous signal, and then produces the second scrambling sequence decided by the group to which the first shot sequence belongs. A wireless communication system uses a plurality of short sequences and a plurality of short sequences are divided into a plurality of groups. A frequency mapping part makes the first shot sequence to the first scrambling sequence, and then makes the second short sequence into the second scrambling sequence(S530,S540).
Abstract translation: 提供一种生成下行链路帧的方法和小区搜索方法以均衡扇区间干扰。 序列产生部分产生用于显示小区组信息的第一个播放序列和第二个短序列（S510），产生由第一同步信号确定的第一个加扰序列，然后产生由第一个 射击序列属于。 无线通信系统使用多个短序列，并且将多个短序列分成多个组。 频率映射部分使第一个播放序列到第一个加扰序列，然后使第二个短序列进入第二个加扰序列（S530，S540）。
-
公开(公告)号：KR1020080097942A
公开(公告)日：2008-11-06
申请号：KR1020080041068
申请日：2008-05-01
IPC: H04L27/26
CPC classification number: H04L27/2662 , H04J11/0076 , H04L27/2666
Abstract: A method for mapping a secondary synchronization channel symbol in an OFDM cellular system and a base station using the same remove unclearness between other cells in a mapping proves by setting at least one of two orthogonal code sequences to an index value to add or multiply an arbitrary number to or by the orthogonal code sequence index allocated to a first secondary synchronization channel symbol and performing mapping. A first orthogonal code sequence(301) and a second orthogonal code sequence(302) allocated to the first secondary synchronization channel symbol are cross-mapped and allocated to a second secondary synchronization channel symbol. At least one of two orthogonal code sequences is set to an index value adding or multiply the arbitrary number to or by the orthogonal code sequence index allocated to the first secondary synchronization channel symbol and then is mapped. The arbitrary number is the natural number.
Abstract translation: 通过将两个正交码序列中的至少一个设置为索引值来在OFDM细胞系统和基站中使用相同的删除不清楚的映射中的其他小区之间的映射的方法，以添加或乘以任意的 编号分配给或分配给第一次要同步信道符号并执行映射的正交码序列索引。 分配给第一次同步信道符号的第一正交码序列（301）和第二正交码序列（302）被交叉映射并分配给第二次同步信道符号。 两个正交码序列中的至少一个被设置为将任意数加到或乘以分配给第一次同步信道符号的正交码序列索引然后被映射的索引值。 任意数字是自然数。
-
公开(公告)号：KR1020080097902A
公开(公告)日：2008-11-06
申请号：KR1020070126724
申请日：2007-12-07
CPC classification number: H04W48/10 , H04J13/00 , H04L1/0041 , H04L1/0046 , H04L1/0067 , H04L1/0071 , H04L1/1845 , H04L25/03866 , H04L25/05 , H04W4/18 , H04W48/08 , H04W72/0446 , H04W72/005
Abstract: A signal transmission method and an apparatus therefor are provided to reduce the decoding delay time in a terminal, and enable a base station to efficiently manage resources. In a base station, a method for transmitting signals includes the following steps. Transmission information consisting of a plurality of frames is renewed at a transmission information update period. In each frame within the transmission information period, channel coding is performed for the transmission information by using a scrambling code. The channel-coded transmission information is converted into the transmission symbol. The transmission symbol is transmitted. In each of frames within the transmission information period, different scrambling codes are used.
Abstract translation: 提供了一种信号传输方法及其装置，以减少终端中的解码延迟时间，并使基站有效地管理资源。 在基站中，发送信号的方法包括以下步骤。 由传输信息更新周期更新由多个帧组成的传输信息。 在发送信息周期内的每帧中，通过使用扰频码对发送信息进行信道编码。 信道编码的传输信息被转换成传输符号。 发送符号被发送。 在传输信息周期内的每个帧中，使用不同的扰码。
-
公开(公告)号：KR1020080097359A
公开(公告)日：2008-11-05
申请号：KR1020080041066
申请日：2008-05-01
Applicant: 한국전자통신연구원
CPC classification number: H04B7/12 , H04B7/2612
Abstract: A data re-transmission method by interference averaging and an apparatus using the same are provided to reduce interference by making orthogonal code groups for different mobile stations when repetitively transmitting data. A data re-transmission method by interference averaging between terminals in a mobile communication system comprises the following steps of: re-partitions a plurality of terminals into a plurality of subgroups so that terminals belonging to each subgroup can be different according to data re-transmission(S510); re-assigning orthogonal codes and resources to the terminals belonging to each subgroup(S530, S550); and assigning different frequency bands to the terminal whenever data is re-transmitted(S570).
Abstract translation: 提供通过干扰平均的数据重传方法和使用其的装置，以便在重复发送数据时通过为不同的移动台进行正交码组来减少干扰。 通过移动通信系统的终端之间的干扰平均的数据再传输方法包括以下步骤：将多个终端重新划分为多个子组，使得属于每个子组的终端可以根据数据重传而不同 （S510）; 对属于每个子组的终端重新分配正交码和资源（S530，S550）; 以及每当重新发送数据时，向终端分配不同的频带（S570）。
-
公开(公告)号：KR1020080086338A
公开(公告)日：2008-09-25
申请号：KR1020070132637
申请日：2007-12-17
Abstract: A handover method between wireless communication systems each using a different wireless access technology and a method for transmitting a forward synchronization signal therefore are provided to perform seamless handover by providing a frame structure including an SCH(Synchronous Channel)/P-BCH(Primary-Broadcasting Channel) supporting measurement of handover. An MS(Mobile Station)(500), which communicates with a home base station(S0) acquires information such as the number of transmission antennas of a target base station, and bandwidth information(S1). The MS reports the information to the home base station(S2). The home base station inquires a target base station(520) as to whether the MS can perform handover(S3). If there is available radio resources, the target base station informs the home base station accordingly(S4). The home base station instructs the MS to perform handover(S5). The MS transmits a handover preamble to the target base station(S6). The target base station allocates resources for data communication to the MS(S7). The MS communicates with the target base station with the allocated radio resources to thus complete inter RAT handover(S8).
Abstract translation: 因此，提供各自使用不同的无线接入技术的无线通信系统之间的切换方法以及用于发送正向同步信号的方法，通过提供包括SCH（同步信道）/ P-BCH（Primary-Broadcasting 频道）支持切换测量。 与家庭基站（S0）进行通信的MS（移动站）（500）获取诸如目标基站的发送天线的数量和带宽信息的信息（S1）。 MS向家庭基站报告信息（S2）。 家庭基站向目标基站（520）询问MS是否可以执行切换（S3）。 如果存在可用的无线电资源，则目标基站相应地通知家庭基站（S4）。 家庭基站指示MS执行切换（S5）。 MS向目标基站发送切换前导码（S6）。 目标基站向MS分配用于数据通信的资源（S7）。 MS利用分配的无线电资源与目标基站进行通信，从而完成RAT间切换（S8）。
-
-
-
-
-
-
-
-
-
Search Results
133
records
(took 0.03 seconds)
