公开(公告)号：US20010053191A1

公开(公告)日：2001-12-20

申请号：US09880453

申请日：2001-06-13

发明人： Motohiro Tanno ,  Takehiro Nakamura

IPC分类号： H04L027/06

CPC分类号： H04W56/0085 ,  H04W92/10

摘要： A synchronization establishing method of a mobile station in a mobile communication system is proposed which can reduce the effect of noise or interference, and achieve higher accuracy than conventional method. To enable the mobile station to detect a signal transmitted from a base station, and to establish synchronization to the signal in a mobile communication system in which a synchronization channel is multiplexed periodically into the downlink signal, the mobile station averages, in phase and in complex numbers, correlation values of the synchronization channel over a plurality of periods, followed by detecting the power of them to carrying out peak detection.

摘要翻译： 提出了移动通信系统中的移动台的同步建立方法，其可以降低噪声或干扰的影响，并且比常规方法获得更高的精度。 为了使移动台能够检测从基站发送的信号，并且在周期性地将同步信道多路复用到下行链路信号的移动通信系统中建立与信号的同步，移动台同相和复数 数字，多个周期中的同步信道的相关值，随后检测它们进行峰值检测的功率。

公开(公告)号：US20010021200A1

公开(公告)日：2001-09-13

申请号：US09801912

申请日：2001-03-09

申请人： MITSUBISHI DENKI KABUSHIKI KAISHA Tokyo, Japan

发明人： Marian Rudolf

IPC分类号： H04J003/06 ,  H04J003/08 ,  H04L012/66

CPC分类号： H04B1/7083 ,  H04W56/0085

摘要： The present invention concerns more particularly a method of isolating target cell signals originating from a target cell from active cell signals originating from an active cell in a cell search. According the invention, this method comprises: a) receiving a signal, the received signal being either a target cell signal or an active cell signal; b) generating a local copy of a known active cell signal; and c) subtracting the local copy of the known active cell signal from the received signal wherein step c) is executed if a reception time of the received signal corresponds to an expected reception time of the known active cell signal.

摘要翻译： 本发明更具体地涉及一种将源自目标细胞的靶细胞信号与源自细胞搜索中活性细胞的活性细胞信号分离的方法。 根据本发明，该方法包括：a）接收信号，所述接收信号是目标小区信号或活动小区信号; b）产生已知活动小区信号的本地副本; 以及c）如果接收信号的接收时间对应于所述已知有源小区信号的预期接收时间，则从接收信号中减去已知有源小区信号的本地副本，其中执行步骤c）。

公开(公告)号：US06285666B1

公开(公告)日：2001-09-04

申请号：US08974964

申请日：1997-11-20

申请人： Rie Suzuki

发明人： Rie Suzuki

IPC分类号： H04B7216

CPC分类号： H04W56/0085 ,  H04J13/00

摘要： The communication period of spread spectrum data is divided into a plurality of portions, and an adjustment period for receiving the spread spectrum data is provided between one data-communication period and another communication period. Thereby, the setting of a receiving end is adjusted in the adjustment period after the spread spectrum data is received in one data-communication period.

摘要翻译： 扩展频谱数据的通信周期被分成多个部分，并且在一个数据通信周期与另一通信周期之间提供用于接收扩展频谱数据的调整周期。 由此，在一个数据通信期间接收到扩频数据之后，在调整期间调整接收端的设定。

公开(公告)号：US06275552B1

公开(公告)日：2001-08-14

申请号：US09019362

申请日：1998-02-05

申请人： Toshihide Ando

发明人： Toshihide Ando

IPC分类号： H04L700

CPC分类号： G08G1/092 ,  G07B15/063 ,  H04J3/0605 ,  H04W56/0085

摘要： A road side communication equipment is provided crossing over lanes of an expressway, so that a communication processing for toll collection is executed between the road side equipment and an on-board equipment passing a communication area. The road side equipment sends signals using a 32-bit synchronizing signal for the start slot of each frame and a 16-bit synchronizing signal for subsequent slots of the frame. The on-board equipment receives this to perform signal receiving processing. The received communication signals are then digital-demodulated and entered to a shift register, so that the bit pattern is compared in two comparators to detect the synchronizing signal. According to the output from AND circuits, the synchronizing signal is distinguished from the synchronizing signal to determine the received data and receive subsequent data.

摘要翻译： 跨越高速公路的车道设置路侧通信装置，在道路侧设备与通过通信区域的车载设备之间执行用于收费的通信处理。 路边设备使用用于每帧的起始时隙的32位同步信号和用于帧的后续时隙的16位同步信号发送信号。 车载设备接收信号接收处理。 所接收的通信信号然后被数字解调并输入到移位寄存器，使得在两个比较器中比较位模式以检测同步信号。 根据AND电路的输出，将同步信号与同步信号区分开来，以确定接收到的数据并接收后续数据。

公开(公告)号：US6091718A

公开(公告)日：2000-07-18

申请号：US784483

申请日：1997-01-17

申请人： Robert Stanley Saunders ,  Nguyen Quan Tat

发明人： Robert Stanley Saunders ,  Nguyen Quan Tat

IPC分类号： H04B7/26 ,  H04L7/04 ,  H04W36/08 ,  H04W36/26 ,  H04W56/00 ,  H04B7/212

CPC分类号： H04L1/0045 ,  H04B7/2643 ,  H04W56/0085 ,  H04L7/046 ,  H04W36/08

摘要： A radio handset and method of operation of same for communication on a selected channel of a radio telephone system in which information is transmitted in bursts, each burst having respective portions independently capable of indicating burst errors. The handset is operable to detect sliding collisions by comparing the distribution of errors over error indicating portions of a received burst.

摘要翻译： 一种无线电手机及其操作方法，用于在其中以突发方式发送信息的无线电话系统的选定信道上进行通信，每个突发具有独立地能够指示突发错误的各个部分。 手机可操作以通过比较错误指示接收到的突发的部分的错误的分布来检测滑动碰撞。

公开(公告)号：US5805644A

公开(公告)日：1998-09-08

申请号：US591615

申请日：1996-01-24

申请人： Chihiro Tagawa

发明人： Chihiro Tagawa

IPC分类号： H04B7/26 ,  H04L7/00

CPC分类号： H04W56/0085 ,  H04W92/10

摘要： The invention provides a transmission timing measuring apparatus for accurately measuring the transmission timing between channels of a base station and a mobile station in, e.g., a system using a digital time-division modulation scheme in which the base station and the mobile station perform communication using different frequencies. In the transmission timing measuring apparatus of the invention, reference and measurement channel signals having different frequencies are converted into digital data by a signal processing section (20) and are selectively output. A data write section (6) temporarily stores each data in a pre-assigned memory area in a memory section (15) by using an accurate clock. A data read section (7) reads out each data from the memory area on the basis of the reference channel. A transmission timing calculating section (10) calculates the transmission timing from the time difference between symbol sequence data read out from the memory section (15). In this manner, the transmission timing measuring apparatus of the invention can obtain an accurate measurement value of the transmission timing without being influenced by a delay caused by the response characteristics of individual internal circuit elements in a demodulation process.

摘要翻译： PCT No.PCT / JP95 / 00928 Sec。 371日期：1996年1月24日 102（e）日期1996年1月24日PCT 1995年5月16日PCT PCT。 WO95 / 33315 PCT公开号 日期1995年12月7日本发明提供了一种传输定时测量装置，用于在例如使用数字时分调制方案的系统中准确测量基站和移动台的信道之间的传输定时，其中基站和 移动台使用不同的频率进行通信。 在本发明的发送定时测量装置中，具有不同频率的参考和测量信道信号被信号处理部分（20）转换成数字数据，并被选择性地输出。 数据写入部分（6）通过使用准确的时钟将每个数据临时存储在存储器部分（15）中的预先分配的存储器区域中。 数据读取部分（7）基于参考信道从存储区域读出每个数据。 发送定时计算部（10）根据从存储部（15）读出的符号序列数据之间的时间差来计算发送定时。 以这种方式，本发明的发送定时测量装置可以在解调处理中不受由各个内部电路元件的响应特性引起的延迟的影响而获得发送定时的精确测量值。

公开(公告)号：US5509016A

公开(公告)日：1996-04-16

申请号：US362786

申请日：1994-12-23

申请人： Walter Muller

发明人： Walter Muller

IPC分类号： H04J3/00 ,  H04B7/26 ,  H04J3/06 ,  H04L7/04 ,  H04J3/16

CPC分类号： H04W56/0045 ,  H04B7/2681 ,  H04J3/0682 ,  H04W56/0085 ,  H04L7/04

摘要： For a radio communications system with time-divided frequencies, the synchronization between a base station and a mobile station is shifted as the mobile moves. The base station transmits symbol sequences with synchronization words to the mobile, which through this obtains a reference point in time. The mobile transmits to the base station symbol sequences with synchronization words, which in the mobile may be displaced in time relative to the reference point in time. The base station generates a reception point in time for the symbol sequences from the mobile by correlation and filtering. The reception point in time is compared with the reference point in time and upon a mutual deviation, a time deviation is generated for the base station. This time deviation is added to a previous time shift in the mobile. A new value for the time shift in the mobile is sent with an adjustment order and the mobile adjusts its transmission point in time relative to the reference point in time by means of the adjustment order. In order to increase the probability that the mobile detects the adjustment order, this order is repeated a number of times. If the reception point in time after this remains unchanged, a resynchronization is ordered, or as an alternative, a release of the connection. Disturbances to the radio connection due to deficient synchronization or frequently recurring resynchronization are reduced.

摘要翻译： 对于具有时分频率的无线电通信系统，基站和移动台之间的同步随着移动移动而移动。 基站向移动台发送具有同步字的符号序列，通过这个获取参考点。 移动台向基站发送具有同步字的基站符号序列，移动台中的同步字可能在时间上相对于参考点在时间上移位。 基站通过相关和滤波从移动台生成符号序列的接收点。 将接收时间点与参考时间点进行比较，并且在相互偏离时，基站产生时间偏差。 这个时间偏差被添加到移动设备的之前的时间偏移。 通过调整顺序发送移动台中的时移的新值，移动台通过调整顺序调整其相对于参考点的时间点的传输点。 为了增加移动台检测到调整顺序的可能性，这个顺序被重复了多次。 如果在此之后的接收点保持不变，则重新同步被排序，或作为替代，释放连接。 由于同步不足或频繁重复同步而导致无线电连接的干扰减少。

公开(公告)号：US5430731A

公开(公告)日：1995-07-04

申请号：US729202

申请日：1991-07-12

申请人： Yuji Umemoto ,  Koichi Ito ,  Masayuki Tanaka

发明人： Yuji Umemoto ,  Koichi Ito ,  Masayuki Tanaka

IPC分类号： H04B7/26 ,  H04J3/06 ,  H04W16/14 ,  H04W24/00 ,  H04W56/00 ,  H04W74/04

CPC分类号： H04W16/14 ,  H04B7/2656 ,  H04W56/008 ,  H04W56/0085 ,  H04W24/00 ,  H04W74/04

摘要： In a radio tele-communication system of this invention, at least one radio frequency is shared by a plurality of base stations and a plurality of mobile stations, a signal transmitted at the radio frequency has a time frame constituted by a plurality of time-divisionally multiplexed time slots, and time intervals for detecting timing shifts are set between the plurality of time slots. In at least either the base stations or mobile stations, a communication timing shift in a time slot currently used for communication is detected from a reception state in one of the time intervals for detecting timing shifts, and the communication timing of the corresponding time slot is corrected in cooperation with a station, with which communication is performed, on the basis of the communication timing shift detection result.

摘要翻译： 在本发明的无线电通信系统中，由多个基站和多个移动台共享至少一个射频，在射频发送的信号具有多个时分的时间帧 多个时隙和用于检测定时偏移的时间间隔被设置在多个时隙之间。 在至少基站或移动站中，在用于检测定时偏移的时间间隔之一中的接收状态中检测当前用于通信的时隙中的通信定时偏移，并且相应时隙的通信定时为 根据通信定时偏移检测结果，与进行通信的站一起进行校正。

公开(公告)号：US4031330A

公开(公告)日：1977-06-21

申请号：US584187

申请日：1975-06-05

申请人： Johannes Cornelis van Leeuwen

发明人： Johannes Cornelis van Leeuwen

IPC分类号： H04B1/66 ,  H04B7/24 ,  H04W56/00 ,  H04W72/04 ,  H04W84/18 ,  H04J3/12

CPC分类号： H04W48/08 ,  H04W84/18 ,  H04W56/0085

摘要： A digital radio transmission system including a master station and a plurality of slave stations, in which the transmit and receive periods of all the slave stations are under control of the master station. The durations and instants of occurrence of time frames are determined by a frame synchronizing pattern which is periodically transmitted by the master station on all channel frequencies of the system. The master station also transmits signalling code words for each channel frequency in fixed time slots within the frame duration as determined by successive frame synchronizing patterns.

摘要翻译： 一种包括主站和多个从站的数字无线电传输系统，其中所有从站的发射和接收周期都在主站的控制之下。 时间帧发生的持续时间和时间由主系统在系统的所有信道频率周期性地发送的帧同步模式来确定。 主站还在由连续帧同步模式确定的帧持续时间内的固定时隙中为每个信道频率发送信令码字。

公开(公告)号：US10277443B2

公开(公告)日：2019-04-30

申请号：US13392468

申请日：2010-08-23

申请人： Kapseok Chang ,  Wooyong Lee ,  Hyun-Kyu Chung

发明人： Kapseok Chang ,  Wooyong Lee ,  Hyun-Kyu Chung

IPC分类号： H04L27/00 ,  H04L27/26 ,  H04W56/00 ,  H04W84/12 ,  H04W72/04

CPC分类号： H04L27/261 ,  H04L27/2613 ,  H04L27/2692 ,  H04W56/0085 ,  H04W72/04 ,  H04W84/12

摘要： Disclosed is a technique related to a method and apparatus for generating a preamble and a data frame for wireless communication, and to a synchronization estimation method using the preamble. According to the technique, a method for generating a frame for wireless communication is disclosed, wherein the method comprises: a step of generating a modified sequence using a first base sequence for synchronization estimation; and a step of allocating the first base sequence and the modified sequence to the frequency domain of a first timeslot to generate a preamble. The modified sequence includes a complex conjugated sequence of the first base sequence or a sequence having a code different from that of the first base sequence.