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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）。
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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。
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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。
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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）。
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公开(公告)号：KR1020080093280A
公开(公告)日：2008-10-21
申请号：KR1020070037004
申请日：2007-04-16
Applicant: 한국전자통신연구원
CPC classification number: H04W74/0833 , H04B1/707 , H04L5/0032 , H04L5/0053
Abstract: A receiver and a method for detecting random access preambles in a mobile communication system are provided to make it possible to detect the random access preambles in one preamble sequence and repeatable for each repeated preamble sequence, for each receiving antenna or for each receiving path. A method for detecting random access preambles in a mobile communication system includes the following several steps. A CP(Cyclic Prefix) eliminator eliminates CPs included at signals received from plural receiving antennas(S100,S110). The first DFT operator converts the received signals into frequency domain signals(S120) and a subcarrier demapping unit extracts one preamble and repeated preamble(S130). Multiplication operators multiply the extracted preambles by complex conjugate(S140). An IFFT(Inverse Fast Fourier Transform) operator converts the outputs of the multiplication operators into time domain signals(S150). Power calculation units calculate power by using the converted signals(S160). A non-coherent combining unit adds plural interrelation power values into one interrelation power information(S170). A peak detector detects the largest power value(S180). The peak detector compares the detected largest power value with a preset reference(S190). If the detected largest power value is larger than the preset reference, the peak detector outputs time offset information matched with the largest power value, and preamble sequence information of a detector engine which detected the preambles with respect to a power value(S200). In case the detected largest power value is smaller than the preset reference, any other information is not outputted(S210).
Abstract translation: 提供了一种用于检测移动通信系统中的随机接入前同步码的接收机和方法，以便可以检测一个前同步码序列中的随机接入前同步码，并针对每个接收天线或每个接收路径对每个重复的前同步码序列进行重复。 一种在移动通信系统中检测随机接入前导码的方法包括以下几个步骤。 CP（循环前缀）消除器消除了从多个接收天线接收的信号中包括的CP（S100，S110）。 第一DFT操作者将接收到的信号转换为频域信号（S120），并且副载波解映射单元提取一个前同步码和重复前导码（S130）。 乘法运算符将提取的前导乘以复共轭（S140）。 IFFT（逆快速傅里叶变换）算子将乘法运算符的输出转换为时域信号（S150）。 功率计算单元使用转换后的信号计算功率（S160）。 非相干组合单元将多个相关功率值添加到一个相关功率信息中（S170）。 峰值检测器检测最大功率值（S180）。 峰值检测器将检测到的最大功率值与预设参考值进行比较（S190）。 如果检测到的最大功率值大于预设参考值，则峰值检测器输出与最大功率值匹配的时间偏移信息，以及相对于功率值检测到前导码的检测器引擎的前导序列信息（S200）。 在检测到的最大功率值小于预设参考值的情况下，不输出任何其他信息（S210）。
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Patent Agency Ranking
公开(公告)号：KR1020080086406A
公开(公告)日：2008-09-25
申请号：KR1020080026517
申请日：2008-03-21
Applicant: 한국전자통신연구원
CPC classification number: H04W56/00 , Y02D70/00 , Y02D70/1242 , Y02D70/1262 , Y02D70/24 , H04B7/2603 , H04W52/0209 , H04W68/005 , H04W72/042
Abstract: A paging information transmission method and a paging method in a mobile communication system are provided to transmit paging information to MSs(Mobile Stations) that does not maintain uplink synchronization to allow the MSs to perform paging based on the paging information. A BS(Base Station)(100) checks whether there is packet data or a control message to be transmitted to an MS(S100). When there is packet data or a control message, the BS checks whether the MS maintains uplink physical layer synchronization(S110). If the MS maintains the uplink physical layer synchronization, the BS configures radio resource allocation information for transmission of packet information by using an identifier of the MS(S120). The BS transmits the radio resource allocation information via a physical layer control channel and transmits a packet data block via downlink radio resource(S130). the MS searches whether the radio resource allocation information exists in a physical layer control channel(S140). If there is radio resource allocation information, the MS receives a packet data block transmitted by the BS(S150-S160). The MS generates HARQ(Hybrid Automatic Retransmit reQuest) response information and transmits it to the BS(S170,S180).
Abstract translation: 提供移动通信系统中的寻呼信息发送方法和寻呼方法，用于向不进行上行同步的MS（移动台站）发送寻呼信息，以允许MS基于寻呼信息进行寻呼。 BS（基站）（100）检查是否存在要发送到MS的分组数据或控制消息（S100）。 当存在分组数据或控制消息时，BS检查MS是否保持上行物理层同步（S110）。 如果MS保持上行链路物理层同步，则BS通过使用MS的标识符来配置用于传输分组信息的无线电资源分配信息（S120）。 BS通过物理层控制信道发送无线资源分配信息，经由下行链路无线资源发送分组数据块（S130）。 MS搜索物理层控制信道中是否存在无线资源分配信息（S140）。 如果存在无线电资源分配信息，则MS接收由BS发送的分组数据块（S150-S160）。 MS产生HARQ（混合自动重传请求）响应信息并将其发送到BS（S170，S180）。
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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）。
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公开(公告)号：KR1020080082429A
公开(公告)日：2008-09-11
申请号：KR1020070118516
申请日：2007-11-20
Applicant: 한국전자통신연구원
CPC classification number: H04L1/0606 , H04B7/0613 , H04B7/0697 , H04L1/0031 , H04L27/2662
Abstract: A signal transmission method is provided to apply transmission diversity methods of BCH(Broadcast Channel) information variously according to a distance between SCH(Synchronization Channel) information and the BCH information, thereby magnifying a time diversity gain within a TTI(Transmission Time Interval). Plural SCH and BCH symbols are assigned to plural symbol intervals, respectively. The first transmission diversity method is applied to the SCH symbols and BCH symbols adjacent to the SCH symbols. The second transmission diversity method is applied to the BCH symbols isolated from the SCH symbols. The SCH symbols and the BCH symbols are transmitted.
Abstract translation: 提供信号传输方法，以根据SCH（同步信道）信息和BCH信息之间的距离不同地应用BCH（广播信道）信息的传输分集方法，从而放大TTI（传输时间间隔）内的时间分集增益。 分别将多个SCH和BCH符号分配给多个符号间隔。 第一传输分集方法应用于与SCH符号相邻的SCH符号和BCH符号。 第二传输分集方法应用于从SCH符号隔离的BCH符号。 发送SCH符号和BCH符号。
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公开(公告)号：KR1020080072503A
公开(公告)日：2008-08-06
申请号：KR1020070092996
申请日：2007-09-13
CPC classification number: H04L27/2646 , H04L5/0007
Abstract: A method and an apparatus for transmitting an uplink signal in a communication system are provided to reduce overhead caused by a reference signal by allocating a reference signal having a large bandwidth. A sounding reference signal is disposed in a frame(S510). The sounding reference signal is converted into a transmission signal of a time domain through reverse FFT(Fast Fourier Transform)(S520). A guard interval is inserted into the transmission signal of the time domain(S530). The analog transmission signal is converted into a wireless frequency to be transmitted through a transmitting antenna(S540).
Abstract translation: 提供一种用于在通信系统中发送上行链路信号的方法和装置，以通过分配具有大带宽的参考信号来减少由参考信号引起的开销。 探测参考信号被布置在帧中（S510）。 通过反FFT（快速傅里叶变换）将探测参考信号转换成时域的发送信号（S520）。 保护间隔被插入时域的发送信号（S530）。 模拟发送信号被转换成通过发送天线发送的无线频率（S540）。
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公开(公告)号：KR1020080064748A
公开(公告)日：2008-07-09
申请号：KR1020080001424
申请日：2008-01-04
CPC classification number: H04L27/2607 , H04L69/323 , H04W74/006 , H04L29/02 , H04W74/0833
Abstract: A random access preamble structure is provided to realize frequency domain at a receiving end through by maintaining preamble sequence used in base preamble equally and extending a CP(cyclic prefix) corresponded to the maximum round trip delay time according to extended cell radius. A method for generating a random access preamble in an extended cell environment comprising: generating a CP(cyclic prefix) which is the sum of a maximum delay spread and the maximum round trip delay time according to the extended cell radius; generating a preamble sequence part.
Abstract translation: 提供随机接入前同步码结构，通过在前同步码中平均维持前同步码序列，根据扩展的小区半径扩展对应于最大往返行程延迟时间的CP（循环前缀）来实现接收端的频域。 一种用于在扩展小区环境中生成随机接入前同步码的方法，包括：根据所述扩展小区半径，生成最大延迟扩展和最大往返延迟时间之和的CP（循环前缀）; 生成前导序列部分。
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