公开(公告)号：WO2019169171A1

公开(公告)日：2019-09-06

申请号：PCT/US2019/020111

申请日：2019-02-28

Applicant: QUALCOMM INCORPORATED

Inventor： KUMAR, Ravinder ,  RAJURKAR, Anand

IPC: H04L27/26 ,  H04B1/7083 ,  H04J11/00 ,  H04W48/16

Abstract: A method of performing wireless communication includes accumulating, by a user equipment (UE) during initial cell search, samples of received data over a maximum front-end bandwidth of the UE. The method also includes splitting the samples into smaller, non-overlapping spectrum chunks, and performing correlation-based detection on one or more of the smaller, non-overlapping chunks. The method further includes detecting a wireless communication system based on results of the correlation-based detection.

公开(公告)号：WO2016120773A1

公开(公告)日：2016-08-04

申请号：PCT/IB2016/050348

申请日：2016-01-23

Applicant: TELEFONAKTIEBOLAGET LM ERICSSON (PUBL)

Inventor： ADHIKARY, Ansuman ,  JOHANSSON, Niklas ,  WANG, Yi-Pin Eric

IPC: H04W48/16 ,  H04B1/7083 ,  H04J11/00 ,  H04L27/26

CPC classification number: H04W56/001 ,  H04B1/7083 ,  H04J11/0069 ,  H04J11/0079 ,  H04L27/2656 ,  H04L45/745 ,  H04W4/70 ,  H04W48/16 ,  H04W64/003 ,  H04W88/02

Abstract: A method in a node (110, 115) comprises receiving (604) a signal, and collecting (608) a first set of sequences corresponding to a first piece of cellular information and a second set of sequences corresponding to a second piece of cellular information over multiple frames of the received signal, wherein the second piece of cellular information is encoded based at least in part on the first piece of cellular information. The method further comprises processing (612) the first set of sequences corresponding to the first piece of cellular information to determine the first piece of cellular information, and processing (616), using the determined first piece of cellular information, the second set of sequences corresponding to the second piece of cellular information to determine the second piece of cellular information simultaneously with the determination of the first piece of cellular information. The method defines a new cell search method for Narrowband Machine-to-Machine NB M2M devices using a new frame structure for PBSCH comprising a) Synchronization Sequence (SS):No separate sequences but a single sequence for both the frame timing estimation and frequency offset correction. (b) Cell ID Sequence (CIS): A separate sequence to determine the cell ID, after the frame timing and frequency offset is established. (c) Frame Index Indication Sequence (FIIS):In a final step the FIIS to determine the frame number.

Abstract translation: 节点（110,115）中的方法包括：接收（604）信号，并且收集（608）对应于第一细胞信息的第一组序列和对应于第二细胞信息的第二组序列 在所述接收信号的多个帧上，其中，所述第二细胞信息片段至少部分地基于所述第一细胞信息进行编码。 该方法还包括处理（612）对应于第一细胞信息的第一组序列以确定第一细胞信息，以及使用确定的第一细胞信息处理（616）第二组序列 对应于所述第二细胞信息，以在确定所述第一细胞信息的同时确定所述第二细胞信息。 该方法为使用PBSCH的新帧结构的窄带机对机器NB M2M设备定义了新的小区搜索方法，其包括a）同步序列（SS）：没有单独的序列，而是用于帧定时估计和频率偏移的单个序列 更正。 （b）小区ID序列（CIS）：在帧定时和频率偏移建立之后，确定小区ID的单独序列。 （c）帧索引指示序列（FIIS）：在最后一步FIIS中确定帧号。

公开(公告)号：WO01001596A1

公开(公告)日：2001-01-04

申请号：PCT/US2000/017898

申请日：2000-06-28

IPC: H04B1/707 ,  H04B1/7073 ,  H04B1/7075 ,  H04B1/708 ,  H04B1/7083 ,  H04L7/00 ,  H04Q7/38

CPC classification number: H04B1/70752 ,  H04B1/70735 ,  H04B1/70755 ,  H04B1/708 ,  H04B1/7083 ,  H04B2201/70701 ,  H04B2201/70707

Abstract: A method and apparatus for quickly acquiring synchronization of a signal in WCDMA communication system utilizing variable duration sample accumulation, validity testing of decoder estimates, and parallel decoding of multiple synchronization signals within a PERCH channel. The receiver (204) accumulates the samples necessary to reliably determine slot timing. Until slot timing estimates pass a validity test, samples are accumulated (304A, 304B) for frame timing estimates. Until frame timing estimates pass a validity test, samples are analyzed to determine the pilot offset of the channel.

Abstract translation: 一种用于在WCDMA通信系统中利用可变持续时间采样累加，解码器估计的有效性测试以及在PERCH信道内的多个同步信号的并行解码来快速获取信号的同步的方法和装置。 接收机（204）累积可靠地确定时隙定时所需的采样。 在时隙定时估计通过有效性测试之前，对于帧定时估计，采样被累积（304A，304B）。 直到帧定时估计通过有效性测试，分析样本以确定信道的导频偏移。

公开(公告)号：WO00065736A1

公开(公告)日：2000-11-02

申请号：PCT/KR2000/000387

申请日：2000-04-24

IPC: H04B1/707 ,  H04B1/7083 ,  H04W16/02 ,  H04W48/16 ,  H04W76/02 ,  H04B1/69

CPC classification number: H04B1/7083 ,  H04B2201/70702

Abstract: There is provided a cell search apparatus and method in a mobile communication system. The cell search apparatus is slot time-synchronized by receiving a first synchronization code in each slot of a P-SCH frame and in addition receives over the slots of an S-SCH frame a base station group specific code representing one of base station groups and a base station specific code representing one of base stations in the base station group. In the cell search apparatus, a base station group specific code detecting unit detects the base station group specific code received on the S-SCH in the slot-synchronized state, and a base station specific code detecting unit detects a transmitting base station by detecting the base station specific code received following the base station group specific code.

Abstract translation: 在移动通信系统中提供了小区搜索装置和方法。 小区搜索装置通过在P-SCH帧的每个时隙中接收到第一同步码来进行时隙同步，并且在S-SCH帧的时隙上接收表示基站组之一的基站组特定码， 代表基站组中的基站之一的基站专用码。 在小区搜索装置中，基站组专用码检测单元检测在时隙同步状态下在S-SCH上接收的基站组特定码，基站专用码检测单元通过检测发送基站 接收到基站组特定代码后的基站专用码。

公开(公告)号：WO00055992A1

公开(公告)日：2000-09-21

申请号：PCT/US2000/005669

申请日：2000-03-03

IPC: H04B1/7083 ,  H04B1/7107 ,  H04B7/26 ,  H04L7/00 ,  H04B1/707

CPC classification number: H04B1/7083 ,  H04B1/7107 ,  H04B2201/70702

Abstract: A received communications signal is correlated with a common synchronization code to produce a synchronization detection signal. A component of the synchronization detection signal associated with a known synchronization signal is canceled from the synchronization detection signal to produce an interference-canceled synchronization detection signal. Timing of a synchronization signal is determined from the interference-canceled synchronization detection signal. According to one aspect, interference cancellation is achieved by generating a correlation of an estimated received known synchronization signal with the common synchronization code, canceling the correlation of the estimated received known synchronization signal with the common synchronization code from the synchronization detection signal to produce the interference-canceled synchronization detection signal. Timing of a synchronization signal may then be determined by accumulating the interference-canceled synchronization detection signal over a time interval, detecting a peak in the accumulated interference-canceled synchronization detection signal, and determining timing of a synchronization signal from the detected peak. According to another aspect, interference cancellation is achieved by accumulating the synchronization detection signal over a time interval, identifying a peak in the accumulated synchronization detection signal not associated with a known synchronization signal, and determining timing of a synchronization signal from the identified peak. Related terminal apparatus are also discussed.

Abstract translation: 接收到的通信信号与公共同步码相关，以产生同步检测信号。 与已知同步信号相关联的同步检测信号的分量从同步检测信号中消除，以产生干扰消除同步检测信号。 从干扰消除的同步检测信号确定同步信号的定时。 根据一个方面，通过产生估计接收的已知同步信号与公共同步码的相关性来消除干扰消除，从所述同步检测信号中消除所估计的接收到的已知同步信号与公共同步码的相关性，以产生干扰 同步检测信号。 然后可以通过在时间间隔上累积干扰消除的同步检测信号来确定同步信号的定时，检测累积的干扰消除同步检测信号中的峰值，以及根据检测到的峰值确定同步信号的定时。 根据另一方面，通过在时间间隔内累积同步检测信号，识别与已知同步信号不相关的累积同步检测信号中的峰值，以及从所识别的峰值确定同步信号的定时来实现干扰消除。 还讨论了相关终端装置。

公开(公告)号：WO2013056421A1

公开(公告)日：2013-04-25

申请号：PCT/CN2011/080930

申请日：2011-10-18

Applicant: 中兴通讯股份有限公司 ,  易立强

Inventor： 易立强

IPC: H04B1/7083

CPC classification number: H04B1/7083 ,  H04J11/0069

Abstract: 本发明实施例公开一种小区搜索方法及系统，该方法包括：对接收的信号进行RF前端处理和数字前端处理，得到处理后的接收信号；对处理后的接收信号进行基于复合匹配滤波的PSS检测，利用CP相关进行载波频偏估计，并进行分段非相干的SSS检测。根据本发明实施例的技术方案，在保证系统性能的基础上实现高效低复杂度的小区搜索。

公开(公告)号：WO2005015920A8

公开(公告)日：2005-04-21

申请号：PCT/CN2004000878

申请日：2004-07-28

Applicant: DA TANG MOBILE COMM EQUIPMENT ,  LI SHIHE ,  XU WENSHENG

Inventor： LI SHIHE ,  XU WENSHENG

IPC: H04B1/707 ,  H04B1/7083 ,  H04B7/005 ,  H04B7/26 ,  H04J3/00 ,  H04W52/50 ,  H04Q7/00

CPC classification number: H04W52/50 ,  H04B1/7083

Abstract: The present invention relates to, a pain control method for user terminal employed when cell perform initial searching in a TD-SCDMA mobile communication system. First, the user terminal receive and record data of plurality of subframe by BS transmitted in the case of receiver have maximum gain for each carrier frequency; Search the position of Downlink Pilot Times Slot (DwPTS) of plurality of subframe using time window determine method; Continue perform later process of cell initial searching when acquired the position of DwPTS; Determine whether receiver is saturated when not acquired the positon of DwPTS; lf receiver is saturated, decrease gain of receiver and continue receive and record data of plurality of subframe by BS transmitted; If receiver is not saturated, determine no BS adapt to currently carrier frequency. Repeat perform above discribed cell initial searching process, until the receiver is not saturated. The present invention can speedy complete cell initial searching in the condition of ADC of user terminal in a limit dynamic range

Abstract translation: 本发明涉及在小区在TD-SCDMA移动通信系统中执行初始搜索时所采用的用户终端的疼痛控制方法。 首先，用户终端接收和记录在接收机的情况下发送的BS的多个子帧的数据对于每个载波频率具有最大增益; 使用时间窗确定方法搜索多个子帧的下行导频时隙（DwPTS）的位置; 获取DwPTS的位置时，继续执行细胞初始搜索的后续处理; 当DwPTS的位置未被获取时，确定接收机是否饱和; 如果接收机饱和，则降低接收机的增益，继续通过发送的BS接收和记录多个子帧的数据; 如果接收机不饱和，则确定没有适应当前载波频率的BS。 重复执行上述细胞初始搜索过程，直到接收器不饱和。 本发明可以在极限动态范围内的用户终端的ADC状态下，快速完成小区初始搜索

公开(公告)号：WO03055093A8

公开(公告)日：2003-10-30

申请号：PCT/US0239723

申请日：2002-12-12

Applicant: QUICKSILVER TECH INC

Inventor： SAMBHWANI SHARAD ,  HEIDARI GHOBAD

IPC: H04B1/7073 ,  H04B1/7075 ,  H04B1/708 ,  H04B1/7083 ,  H04B1/7095 ,  H04B7/26 ,  H04B1/707

CPC classification number: H04B1/70735 ,  H04B1/70752 ,  H04B1/708 ,  H04B1/7083 ,  H04B1/7095

Abstract: A system for detecting and identifying the identity of a base station or cell which transmits a scrambling code is provided. According to one aspect of the system, the system is used to perform scrambling code detection of eight (8) primary cells (each scrambling code's X-component being spaced sixteen (16) chips apart) in a group. According to another aspect of the system, a single scrambling code generator is used to generate a master scrambling code. The master scrambling code is then used to create individual scrambling codes which are used in correlation with received signals to detect in parallel which one of the eight (8) possible primary cells in the group transmitted the received signals. According to yet another aspect of the system, each of the correlators maintains a corresponding X-component segment of the master scrambling code. For every sixteen (16) chips, a new X-component segment of the master scrambling code is introduced into one of the correlators, a X-component segment of the master scrambling code is dropped from another correlator, and X-component segments of the master scrambling code are sequentially shifted or propagated through the remaining correlators; and concurrent correlations are performed by the correlators using their respective corresponding X-component segments of the master scrambling code and newly received signals.

Abstract translation: 提供了一种用于检测和识别发送扰码的基站或小区的身份的系统。 根据该系统的一个方面，该系统用于对组（8个）主小区进行扰码检测（每个扰码的X分量间隔十六（16）个码片）。 根据系统的另一方面，使用单个扰码发生器来产生主扰码。 然后，主扰码用于产生与接收信号相关使用的各个扰码，并行检测组中八（8）个可能的主小区中的哪一个发送接收信号。 根据系统的另一方面，每个相关器维护主扰码的相应X分量段。 对于每十六（16）个芯片，主扰码的新X分量段被引入到一个相关器中，主扰码的X分量段从另一个相关器中丢弃，并且X分量段 主扰码依次移位或传播通过剩余的相关器; 并且相关器使用它们各自对应的主扰频码和新接收信号的X分量段来执行并发相关。

公开(公告)号：WO0174103A8

公开(公告)日：2003-05-15

申请号：PCT/CN0100018

申请日：2001-01-12

Applicant: CHINA ACADEMY OF TELECOMM TECH ,  LI FENG ,  XU TIEZHU ,  HE YUSONG ,  RAN XIAOLONG

Inventor： LI FENG ,  XU TIEZHU ,  HE YUSONG ,  RAN XIAOLONG

IPC: H04B1/707 ,  H04B1/7083 ,  H04B1/7087 ,  H04B7/005 ,  H04W24/02 ,  H04W52/32 ,  H04W52/50 ,  H04W56/00 ,  H04W76/02 ,  H04Q7/36

CPC classification number: H04W52/32 ,  H04B1/70758 ,  H04B1/7077 ,  H04B1/7083 ,  H04W52/50 ,  H04W56/00

Abstract: The present invention relates to a method of cell initial search in CDMA digital mobile telecommunication system. The method includes: the terminal obtains the downlink synchronization with a base station after selecting the operating frequency; correcting the carrier departure between the base stations in digital demodulator. The downlink synchronization includes: judging a scope of downlink training sequence time slot (DWPTS) by using the method of training sequence power feature window value; in this scope, obtaining the exact location of terminal reception by finding out the correlation between the received data and the training sequences. The step of correcting carrier departure between terminals and base station includes: estimating carrier departure using software, and adjusting hardware using the judge feed method, recovering the carrier departure using the carrier departure correction method based on the combined detection.

Abstract translation: 本发明涉及CDMA数字移动通信系统中的小区初始搜索的方法。 该方法包括：终端在选择工作频率后，获得与基站的下行同步; 在数字解调器中校正基站之间的载波偏离。 下行同步包括：使用训练序列功率特征窗口值的方法判断下行链路训练序列时隙（DWPTS）的范围; 在该范围内，通过发现接收到的数据和训练序列之间的相关性来获得终端接收的确切位置。 校正终端和基站之间的载波离散的步骤包括：使用软件估计载波离开，并使用判断馈送方法调整硬件，使用基于组合检测的载波偏离校正方法恢复载波离散。

公开(公告)号：WO01003348A1

公开(公告)日：2001-01-11

申请号：PCT/JP2000/004271

申请日：2000-06-29

IPC: H04B1/707 ,  H03J7/02 ,  H03J7/04 ,  H04B1/10 ,  H04B1/16 ,  H04B1/7083 ,  H04B1/7087 ,  H04L27/00 ,  H04J13/04 ,  H03L7/14

CPC classification number: H03J7/04 ,  H03J7/02 ,  H04L2027/0028 ,  H04L2027/0055 ,  H04L2027/0077 ,  H04L2027/0093

Abstract: An angular velocity detector (108) detects the angular velocity of a known reference signal. A measurement section (109) measures the parameters indicating the reception quality of the known reference signal that has been demodulated. A control voltage generator (110) generates a VCO control voltage depending on the angular velocity and the parameters. A VCO (111) varies the carrier frequency in proportion to the control voltage produced by the control voltage generator (110) so that the carrier frequency may approach the carrier frequency of the received signal.

Abstract translation: 角速度检测器（108）检测已知参考信号的角速度。 测量部分（109）测量指示已经被解调的已知参考信号的接收质量的参数。 控制电压发生器（110）根据角速度和参数产生VCO控制电压。 VCO（111）与由控制电压发生器（110）产生的控制电压成比例地改变载波频率，使得载波频率可接近接收信号的载波频率。