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    • 37. 发明申请
    • CELL SEARCH METHOD IN OFDM CELLULAR SYSTEM, FRAME TRANSMISSION METHOD THEREOF, AND FORWARD LINK FRAME STRUCTURE THEREOF
    • OFDM蜂窝系统中的小区搜索方法,帧传输方法及其链路帧结构
    • WO2008013339A1
    • 2008-01-31
    • PCT/KR2006/004546
    • 2006-11-02
    • ELECTRONICS AND TELECOMMUNICATIONS RESEARCH INSTITUTEKIM, Il-GyuPARK, Hyeong-GeunCHANG, Kap-SeokKO, Young-JoYI, Hyo-SeokKIM, Young-HoonBANG, Seung-Chan
    • KIM, Il-GyuPARK, Hyeong-GeunCHANG, Kap-SeokKO, Young-JoYI, Hyo-SeokKIM, Young-HoonBANG, Seung-Chan
    • H04B7/26
    • H04L25/03343H04B1/70735H04J11/0069H04L25/03885H04L27/2613H04L27/2656H04L27/2657H04L27/2662H04L27/2675
    • Provided are a cell search method in an Orthogonal Frequency-Division Multiplexing (OFDM) cellular system, a frame transmission method thereof, and a forward link frame structure thereof, which are capable of reducing the amount of time and computational complexity that are required for a cell search. In the cell search method, a terminal searches for a target cell by using reception signals received from a plurality of base stations each transmitting a frame of its cell. The frame of each of the cells includes M sync channel symbols obtained by frequency-division multiplexing a primary sync channel code sequence, which is common in all the cells, and each secondary sync channel code sequence according to a hopping pattern of each of the cells, where the hopping pattern contains M secondary sync channel code sequences and has one-to-one correspondence to a code group to which scrambling code of the cell belongs, and M is a natural number equal to or greater than 2. An arbitrary hopping pattern used in the OFDM cellular system differs from the result of cyclically shifting the hopping pattern, other hopping patterns, or results of cyclically shifting the other hopping patterns. The method includes obtaining symbol synchronization for the reception signals by using a matched filter, detecting a hopping pattern of the target cell based on the obtained symbol synchronization, and detecting a code group of the target cell based on the detected hopping pattern.
    • 提供了正交频分复用(OFDM)蜂窝系统中的小区搜索方法,其帧传输方法及其前向链路帧结构,其能够减少所需的时间量和计算复杂度 小区搜索。 在小区搜索方法中,终端通过使用从发送其小区的帧的多个基站接收的接收信号来搜索目标小区。 每个单元的帧包括通过对所有小区中共同的主同步信道码序列进行频分复用获得的M个同步信道符号,以及根据每个小区的跳频模式的每个副同步信道码序列 ,其中跳频图案包含M个次同步信道码序列,并且与该小区的加扰码所属的码组具有一一对应关系,M是等于或大于2的自然数。任意跳频模式 在OFDM蜂窝系统中使用的不同之处在于循环移位跳频图案,其他跳频图案或循环移位其他跳频图案的结果。 该方法包括通过使用匹配滤波器来获得接收信号的符号同步,基于获得的符号同步来检测目标小区的跳频模式,并且基于检测到的跳频模式来检测目标小区的码组。
    • 40. 发明申请
    • WIRELESS COMMUNICATION SYSTEM COUNTING MOBILE TERMINALS USING MBMS
    • 无线通信系统使用MBMS计数移动终端
    • WO2007066982A3
    • 2007-09-27
    • PCT/KR2006005254
    • 2006-12-06
    • KOREA ELECTRONICS TELECOMMKIM JUNG-IMRYU BYUNG-HANBANG SEUNG-CHAN
    • KIM JUNG-IMRYU BYUNG-HANBANG SEUNG-CHAN
    • H04L12/18H04L12/24H04W4/06H04W4/12H04W74/08
    • H04W74/0841H04J13/00H04W74/0866
    • The present invention relates to a wireless communication system that counts UEs using an MBMS, and a method thereof. The wireless communication system is connected with a UE through a radio link, and includes a Node B and a controlling radio network controller (CRNC). The Node B receives sequence setting information on a sequence included in a preamble transmitted from the UE from a network manager. The CRNC controls the Node B, detects a sequence according to whether to use an MBMS based on the sequence setting information, and performs a counting process for counting UEs based on whether the UE uses the MBMS. According to the present invention, counting of UEs using an MBMS can be efficiently performed by using a predetermined sequence. Particularly, the counting process can be simplified by reducing complexity in access probability management of a network manager, thereby increasing efficiency in data transmission by reducing signaling for random access probability and omitting a random access probability calculation process.
    • 本发明涉及一种使用MBMS对UE进行计数的无线通信系统及其方法。 无线通信系统通过无线链路与UE连接,包括Node B和控制无线网络控制器(CRNC)。 节点B从网络管理器接收关于从UE发送的前导码中包括的序列的序列设置信息。 CRNC控制节点B,基于序列设置信息根据是否使用MBMS来检测序列,并且基于UE是否使用MBMS来执行用于对UE进行计数的计数处理。 根据本发明,通过使用预定序列可以高效地执行使用MBMS的UE的计数。 特别是,通过降低网络管理器的接入概率管理的复杂度,可以简化计数过程,从而通过减少随机接入概率的信令并省略随机接入概率计算过程来提高数据传输的效率。