专利快速检索-快速检索全球专利，免费商用专利数据库-IPRDB

11. 发明申请

WO2016120772A1 FREQUENCY OFFSET CORRECTION IN NARROWBAND MACHINE-TO-MACHINE 审中-公开
标题翻译：窄带机到机器的频率偏移校正
公开(公告)号：WO2016120772A1
公开(公告)日：2016-08-04
申请号：PCT/IB2016/050347
申请日：2016-01-22
申请人： TELEFONAKTIEBOLAGET LM ERICSSON (PUBL)
发明人： ADHIKARY, Ansuman , JOHANSSON, Niklas , WANG, Yi-Pin Eric
IPC分类号： H04L27/00 , H04L27/26 , H04W4/00
CPC分类号： H04L7/0037 , H04L27/0014 , H04L27/2657 , H04L2027/0034 , H04L2027/0095 , H04W4/06 , H04W4/70
摘要： A method in a node (110, 115) is disclosed. The method comprises receiving (504) a signal, and obtaining (508) a first oversampled received signal by sampling the received signal according to a symbol rate. The method further comprises estimating (512) a first frequency offset based on the first oversampled received signal, the first frequency offset estimated using an estimation range limited to one of a bandwidth of the received signal or the symbol rate of the received signal, and obtaining (516) a second oversampled received signal by sampling the received signal according to N times the symbol rate, wherein N is greater than 1. The method further comprises estimating (520) a true frequency offset based on the first frequency offset estimate and the second oversampled received signal.
摘要翻译：公开了节点（110,115）中的方法。该方法包括：接收（504）信号，并通过根据符号率对接收到的信号进行采样来获得（508）第一过采样接收信号。该方法还包括基于第一过采样接收信号来估计（512）第一频率偏移，使用限于接收信号的带宽或接收信号的符号率之一的估计范围估计的第一频率偏移，以及获得（516）第二过采样接收信号，通过根据符号率的N倍对接收到的信号进行采样，其中N大于1.该方法还包括基于第一频率偏移估计估计（520）真频率偏移，过采样接收信号。

12. 发明申请

WO2018087706A1 REFERENCE SIGNAL DESIGN WITH ZADOFF-CHU SEQUENCES 审中-公开
标题翻译： ZADOFF-CHU序列的参考信号设计
公开(公告)号：WO2018087706A1
公开(公告)日：2018-05-17
申请号：PCT/IB2017/057045
申请日：2017-11-10
申请人： TELEFONAKTIEBOLAGET LM ERICSSON (PUBL)
发明人： LIN, Xingqin , ADHIKARY, Ansuman , KHAYRALLAH, Ali S. , KOORAPATY, Havish , WANG, Yi-Pin Eric
IPC分类号： H04L27/26
摘要： Provided are methods (400) of estimating a time delay and/or a frequency shift of a reference signal. Such methods include receiving (405) a first reference signal that is generated using a first Zadoff-Chu (ZC) sequence, receiving (410) a second reference signal that is generated using a second ZC sequence that is different than the first ZC sequence, and processing (415) the first reference signal and the second reference signal to estimate at least one of the time delay and the frequency shift of the first reference signal and/or the second reference signal.
摘要翻译：提供了估计参考信号的时间延迟和/或频移的方法（400）。这样的方法包括：接收（405）使用第一Zadoff-Chu（ZC）序列生成的第一参考信号;接收（410）使用与第一ZC序列不同的第二ZC序列生成的第二参考信号; 以及处理（415）第一参考信号和第二参考信号以估计第一参考信号和/或第二参考信号的时间延迟和频移中的至少一个。

13. 发明申请

WO2018055512A2 FREQUENCY ADJUSTMENT FOR HIGH SPEED LTE DEPLOYMENTS 审中-公开
标题翻译：高速LTE部署的频率调整
公开(公告)号：WO2018055512A2
公开(公告)日：2018-03-29
申请号：PCT/IB2017/055663
申请日：2017-09-19
申请人： TELEFONAKTIEBOLAGET LM ERICSSON (PUBL)
发明人： LIN, Xingqin , ADHIKARY, Ansuman , KHAYRALLAH, Ali S. , WANG, Yi-Pin Eric
IPC分类号： H04L27/00 , H04W56/00
CPC分类号： H04B7/18532 , H04B7/18506 , H04B7/1855 , H04B7/2125 , H04L27/0014 , H04L27/2666 , H04L2027/0026 , H04L2027/0095 , H04W56/0035 , H04W74/0833 , H04W84/005
摘要： Systems and methods relating to correction of a Doppler/frequency offset in a wireless communication system are disclosed. In some embodiments, a method of operation of a node comprises estimating a Doppler/frequency offset for a wireless device based on an uplink signal received from the wireless device and providing a frequency adjustment to the wireless device that corrects for the Doppler/frequency offset. In this manner, the Doppler/frequency offset for a wireless device is determined and corrected.
摘要翻译：公开了涉及校正无线通信系统中的多普勒/频率偏移的系统和方法。在一些实施例中，节点的操作方法包括基于从无线设备接收的上行链路信号来估计无线设备的多普勒频率偏移，并向无线设备提供校正多普勒频率偏移的频率调整。以这种方式，无线设备的多普勒/频率偏移被确定和校正。

14. 发明申请

WO2017078607A1 PROCESSING A CONSTANT AMPLITUDE SEQUENCE FOR TRANSMISSION 审中-公开
标题翻译：处理传输的恒定振幅序列
公开(公告)号：WO2017078607A1
公开(公告)日：2017-05-11
申请号：PCT/SE2016/051090
申请日：2016-11-04
申请人： TELEFONAKTIEBOLAGET LM ERICSSON (PUBL)
发明人： LIN, Xingqin , SUI, Yutao , GRÖVLEN, Asbjörn , ADHIKARY, Ansuman , WANG, Yi-Pin Eric , JOHANSSON, Niklas
IPC分类号： H04L25/03 , H04J13/00 , H04L27/26
CPC分类号： H04L25/03834 , H04J13/0062 , H04J13/105 , H04L27/2613 , H04L27/2614 , H04L27/2692
摘要： An apparatus (10) and method (100) for processing a constant amplitude sequence (12) yields a transmission signal (32) exhibiting a low peak to average power ratio, PAPR. The signal (32) may be suitable for transmission (140) in the uplink as a random access preamble or uplink measurement signal for handover assessment. The signal (32) may be suitable for transmission (140) in the downlink as a synchronization signal. The method (100) comprises extending (110) a constant amplitude sequence (12), such as a Zadoff-Chu sequence, by adding to the sequence one or more complex-valued elements that have the same amplitude as other complex-valued elements in the sequence (12). The method (100) also includes upsampling (120) the extended sequence (16) by linearly interpolating a difference in phase between adjacent complex-valued elements in the extended sequence (16). The method (100) further entails limiting (130) a bandwidth of the upsampled sequence (20) by low pass filtering the upsampled sequence (20). The method (100) may also include transmitting (140) the band limited sequence (28). Due to the low PAPR of the transmitted signal (32), a power amplifier, which may be integrated with other circuits in a System-on-Chip, may have a low backoff. This yields high efficiency for the amplifier, hence low power consumption, and hence extended battery life in radio network devices.
摘要翻译：用于处理恒定幅度序列（12）的设备（10）和方法（100）产生表现出低峰均功率比PAPR的传输信号（32）。信号（32）可以适合于在上行链路中作为用于切换评估的随机接入前导码或上行链路测量信号的传输（140）。信号（32）可以适合于在下行链路中作为同步信号进行传输（140）。方法（100）包括通过向序列添加一个或多个复数值元素来扩展（110）诸如Zadoff-Chu序列的恒定幅度序列（12），该复数值元素具有与其他复数值元素序列（12）。方法（100）还包括通过对扩展序列（16）中的相邻复数值元素之间的相位差进行线性内插来对扩展序列（16）进行上采样（120）。方法（100）还需要通过低通滤波上采样序列（20）来限制（130）上采样序列（20）的带宽。方法（100）还可以包括发送（140）带限制序列（28）。由于发射信号（32）的低PAPR，可能与片上系统中的其他电路集成的功率放大器可能具有低退避。这为放大器提供了高效率，因此功耗低，因此延长了无线电网络设备的电池寿命。

15. 发明申请

WO2017074246A1 SYSTEMS AND METHODS OF PERFORMING DATA TRANSMISSION AND RECEPTION IN A COMMUNICATION SYSTEM 审中-公开
标题翻译：在通信系统中执行数据传输和接收的系统和方法
公开(公告)号：WO2017074246A1
公开(公告)日：2017-05-04
申请号：PCT/SE2016/051036
申请日：2016-10-26
申请人： TELEFONAKTIEBOLAGET LM ERICSSON (PUBL)
发明人： LIN, Xingqin , LOPEZ, Miguel , KANT, Shashi , SUI, Yutao , GRÖVLEN, Asbjörn , JOHANSSON, Niklas , WANG, Yi-Pin Eric , ADHIKARY, Ansuman
IPC分类号： H04L27/26
CPC分类号： H04L27/2602 , H04L27/2607
摘要： Systems and methods of performing data transmission and reception in a communication system are presented. In one exemplary embodiment, a method implemented by a wireless device for transmitting a block of user or pilot data in a communication system may include generating (1301) a transmit signal that represents the block of user or pilot data. The transmit signal may include a guard period excluding any of the user or pilot data in the block. Further, the transmit signal may include, after the guard period, a cyclic prefix formed from a tail end portion of the block of user or pilot data. In addition, the transmit signal may include, after the cyclic prefix, multiple contiguous repetitions of the block of user or pilot data. The method may also include transmitting (1303) the generated transmit signal.
摘要翻译：介绍了在通信系统中执行数据发送和接收的系统和方法。在一个示例性实施例中，由无线设备实现的用于在通信系统中传输用户或导频数据块的方法可以包括生成（1301）表示用户或导频数据块的传输信号。发送信号可以包括排除块中的任何用户或导频数据的保护时段。此外，发送信号可以在保护时段之后包括从用户块或导频数据块的尾端部分形成的循环前缀。另外，发送信号可以在循环前缀之后包括用户或导频数据块的多个连续重复。该方法还可以包括发送（1303）所生成的发送信号。

16. 发明申请

WO2017055302A1 RANDOM ACCESS PREAMBLE FOR MINIMIZING PA BACKOFF 审中-公开
标题翻译：随机访问前缀最小化PA后台
公开(公告)号：WO2017055302A1
公开(公告)日：2017-04-06
申请号：PCT/EP2016/073020
申请日：2016-09-27
申请人： TELEFONAKTIEBOLAGET LM ERICSSON (PUBL)
发明人： LIN, Xingqin , ADHIKARY, Ansuman , GRÖVLEN, Asbjörn , HUI, Dennis , JOHANSSON, Niklas , SUI, Yutao , SUNDBERG, Mårten , WANG, Yi-Pin Eric
IPC分类号： H04W74/00 , H04L27/26
CPC分类号： H04W74/0833 , H04L27/2613 , H04L27/2636 , H04W72/0453 , H04W74/004
摘要： An example method in a user equipment comprises generating (1220) a random access preamble signal and transmitting (1230) the random access preamble signal. This generating of the random access preamble signal comprises generating a Single-Carrier Frequency-Division Multiple Access, SC-FDMA, random access preamble signal comprising two or more consecutive preamble symbol groups, each preamble symbol group comprising a cyclic prefix portion and a plurality of identical symbols occupying a single subcarrier of the SC-FDMA random access preamble signal. The single subcarrier for at least one of the preamble symbol groups corresponds to a first subcarrier frequency and the single subcarrier for an immediately subsequent one of the preamble symbol groups corresponds to a second subcarrier frequency.
摘要翻译：用户设备中的示例性方法包括生成（1220）随机接入前导码信号并发送（1230）随机接入前同步码信号。随机接入前导信号的生成包括：生成包括两个或更多个连续的前导码符号组的单载波频分多址，SC-FDMA，随机接入前导信号，每个前导符号组包括循环前缀部分和多个占用SC-FDMA随机接入前导信号的单个子载波的相同符号。用于至少一个前导码符号组的单个子载波对应于第一副载波频率，并且用于紧随其后的一个前导符号组的单个副载波对应于第二副载波频率。

17. 发明申请

WO2016142798A1 NARROWBAND ORTHOGONAL FREQUENCY-DIVISION MULTIPLE ACCESS CELL SEARCH 审中-公开
标题翻译：窄带正交频分多址访问单元搜索（NARROWBAND ORTHOGONAL FREQUENCY-DIVISION MULTIPLE ACCESS CELL SEARCH
公开(公告)号：WO2016142798A1
公开(公告)日：2016-09-15
申请号：PCT/IB2016/051033
申请日：2016-02-25
申请人： TELEFONAKTIEBOLAGET LM ERICSSON (PUBL)
发明人： LIN, Xingqin , JOHANSSON, Niklas , ADHIKARY, Ansuman
IPC分类号： H04W48/10 , H04W4/00
CPC分类号： H04W56/0015 , H04W4/70 , H04W48/10 , H04W56/0025
摘要： a network node (115) generating (400) a synchronization signal using a set of sequences (e. g., a differentially encoded Zadoff Chu sequence) in a single part of a synchronization channel. The set of sequences is configured to allow one or more wireless devices (110) to determine a cell identity and a slot identity during synchronization with the network node. The method also comprises transmitting (410) the generated synchronization signal to the one or more wireless devices.
摘要翻译：网络节点（115）在同步信道的单个部分中使用一组序列（例如，差分编码的Zadoff Chu序列）生成（400）同步信号。该组序列被配置为允许一个或多个无线设备（110）在与网络节点同步期间确定小区标识和时隙标识。该方法还包括将生成的同步信号发送（410）到一个或多个无线设备。

18. 发明申请

WO2016120773A1 METHOD OF DETECTING CELL IDENTITY AND FRAME NUMBER INFORMATION IN A NARROWBAND MACHINE-TO-MACHINE 'NB M2M' SYSTEM 审中-公开
标题翻译：检测NARROWBAND MACHINE-TO-MACHINE'NB M2M'系统中的细胞识别和帧号信息的方法
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
申请人： TELEFONAKTIEBOLAGET LM ERICSSON (PUBL)
发明人： ADHIKARY, Ansuman , JOHANSSON, Niklas , WANG, Yi-Pin Eric
IPC分类号： H04W48/16 , H04B1/7083 , H04J11/00 , H04L27/26
CPC分类号： H04W56/001 , H04B1/7083 , H04J11/0069 , H04J11/0079 , H04L27/2656 , H04L45/745 , H04W4/70 , H04W48/16 , H04W64/003 , H04W88/02
摘要： 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.
摘要翻译：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。

19. 发明申请

WO2017191522A1 PREAMBLE DETECTION AND TIME-OF-ARRIVAL ESTIMATION FOR A SINGLE- TONE FREQUENCY HOPPING RANDOM ACCESS PREAMBLE 审中-公开
标题翻译：单音频跳变随机接入序列的前导检测和时间到达估计
公开(公告)号：WO2017191522A1
公开(公告)日：2017-11-09
申请号：PCT/IB2017/052291
申请日：2017-04-21
申请人： TELEFONAKTIEBOLAGET LM ERICSSON (PUBL)
发明人： LIN, Xingqin , WANG, Yi-Pin Eric , ADHIKARY, Ansuman
IPC分类号： H04W74/08 , H04W56/00 , H04L27/26
摘要： A receiver baseband processor (155) and method for performing preamble detection and Time-of-Arrival, ToA, estimation for a single-tone frequency hopping random access preamble. The processor FFT processes (11) a received signal and identifies logical tones. For each logical tone, the processor reads (12) received symbols; determines (13) a ToA estimate; forms (14) a statistic based on the ToA estimate; compares (15, 16) the statistic to a preamble threshold; and when the statistic is greater than or equal to the threshold, determines (17) a preamble is present and utilizes the ToA estimate for a timing advance command.
摘要翻译：一种接收机基带处理器（155）以及用于执行前导码检测和到达时间ToA估计单音跳频随机接入前导码的方法。处理器FFT处理（11）接收到的信号并识别逻辑音调。对于每个逻辑音调，处理器读取（12）接收的符号; 确定（13）ToA估计; 形成（14）基于ToA估计的统计量; 将所述统计与（15,16）所述统计与前导阈值进行比较; 并且当统计量大于或等于阈值时，确定（17）前导码存在并且利用ToA估计值来提供定时提前命令。

20. 发明申请

WO2017149480A1 ENERGY EFFICIENT OPERATION OF RADIO NETWORK NODES AND WIRELESS COMMUNICATION DEVICES IN NB-IOT 审中-公开
标题翻译： NB-IOT中无线网络节点和无线通信设备的节能运行
公开(公告)号：WO2017149480A1
公开(公告)日：2017-09-08
申请号：PCT/IB2017/051206
申请日：2017-03-01
申请人： TELEFONAKTIEBOLAGET LM ERICSSON (PUBL)
发明人： NADER, Ali , WANG, Yi-Pin Eric , ADHIKARY, Ansuman
IPC分类号： H04W52/02 , H04W48/16
摘要： A radio network node may operate in a normal or restricted operating state. In the restricted operating state, the radio network node may have just enough activity to enable UEs to detect the cell. The radio access node may transition to the normal operating state in response to messaging from a wireless communication device, such as reception of a random access preamble.
摘要翻译：无线电网络节点可以在正常或受限制的操作状态下操作。在受限制的操作状态下，无线电网络节点可能刚刚具有足够的活动以使得UE能够检测到该小区。响应于来自无线通信设备的消息，例如接收随机接入前导码，无线电接入节点可以转换到正常操作状态。

你已经成功收藏专利！

检索式保存成功!

IPRDB

热门服务

关于我们

友情链接

联系方式