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41. 发明申请

WO2015188861A1 PROCESSING OF RANDOM ACCESS PREAMBLE SEQUENCES 审中-公开
标题翻译：随机访问预处理序列的处理
公开(公告)号：WO2015188861A1
公开(公告)日：2015-12-17
申请号：PCT/EP2014/062169
申请日：2014-06-11
申请人： TELEFONAKTIEBOLAGET L M ERICSSON (PUBL)
发明人： SAHLIN, Henrik , PARKVALL, Stefan , NAUCLÉR, Peter
IPC分类号： H04L27/26
CPC分类号： H04W74/004 , H04L27/2613 , H04L27/2628 , H04L27/2663
摘要： The present disclosure relates to random access in wireless communication systems, and in particular to a wireless device, a preamble receiver, and methods for processing random access preamble signals. A disclosed method in a wireless device comprises generating (S11) one or more identical short sequences having a same time duration as an OFDM symbol used for carrying data traffic in a radio access network of the wireless device. The method also comprises generating (S12) at least one offset indicator sequence different from each of the short sequences, and constructing (S13) the preamble sequence by concatenating the at least one offset indicator sequence and the one or more identical short sequences in time, such that each of the at least one offset indicator sequence has a respective pre-determined location in the preamble sequence.
摘要翻译：本公开涉及无线通信系统中的随机接入，特别是无线设备，前导码接收机以及用于处理随机接入前同步码信号的方法。在无线设备中公开的方法包括：生成（S11）与无线设备的无线电接入网络中用于承载数据业务的OFDM符号具有相同持续时间的一个或多个相同的短序列。该方法还包括生成（S12）与每个短序列不同的至少一个偏移指示符序列，并且通过在时间上连接至少一个偏移指示符序列和一个或多个相同的短序列来构建（S13）前导序列，使得至少一个偏移指示符序列中的每一个在前导码序列中具有相应的预定位置。

42. 发明申请

WO2015144256A1 TRANSMISSION AND RECEPTION OF A RANDOM ACCESS PREAMBLE SIGNAL 审中-公开
标题翻译：随机访问可预测信号的传输和接收
公开(公告)号：WO2015144256A1
公开(公告)日：2015-10-01
申请号：PCT/EP2014/062383
申请日：2014-06-13
申请人： TELEFONAKTIEBOLAGET L M ERICSSON (PUBL)
发明人： SAHLIN, Henrik , FRENNE, Mattias , ANDERSSON, Håkan , FURUSKOG, Johan , NAUCLÉR, Peter
IPC分类号： H04W74/08 , H04L27/26
CPC分类号： H04W74/0833 , H04J13/0003 , H04J13/0062 , H04J13/107 , H04L27/2613 , H04L27/265 , H04W74/004
摘要： A method performed in a preamble transmitter for transmitting a preamble sequence, the method comprising the steps of generating S11 a short sequence s(n), the short sequence having the same time duration as an OFDM symbol used for carrying data traffic in a radio access network of the preamble transmitter, constructing S12 a preamble sequence by concatenating a plurality of said short sequences in time, and transmitting S13 the constructed preamble sequence as a radio signal to a preamble receiver. transmission and reception of a random access preamble signal
摘要翻译：一种在前导码发送器中执行的用于发送前导序列的方法，所述方法包括以下步骤：生成S11短序列s（n），所述短序列具有与用于在无线电接入中承载数据业务的OFDM符号相同的持续时间网络，通过在时间上连接多个所述短序列来构造S12前同步码序列，并将构成的前导码序列作为无线电信号发送到前同步码接收机。发送和接收随机接入前导码信号

43. 发明申请

WO2019158678A1 FLEXIBLE DEMODULATION REFERENCE SIGNAL CONFIGURATION FOR MSG3 审中-公开
公开(公告)号：WO2019158678A1
公开(公告)日：2019-08-22
申请号：PCT/EP2019/053776
申请日：2019-02-15
申请人： TELEFONAKTIEBOLAGET L M ERICSSON (PUBL)
发明人： IRUKULAPATI, Naga Vishnu Kanth , SAHLIN, Henrik , BALDEMAIR, Robert , LI, Jingya
IPC分类号： H04W74/00
摘要： A random access procedure may be provided by a network node for use with a user equipment, UE, of a wireless communication system. A demodulation reference signal, DMRS, configuration may be selected from among a set of DMRS configurations based on obtained information. A DMRS transmission may be controlled during the random access procedure based on the selected DMRS configuration. The UE may receive an indication of the DMRS configuration from the network node, may select the DMRS configuration from among a set of DMRS configurations based on the received indication, and may control DMRS transmission during the random access procedure based on the selected DMRS configuration.

44. 发明申请

WO2015144208A1 ENHANCED PRACH PREAMBLE FORMAT 审中-公开
标题翻译：增强PRACH前置格式
公开(公告)号：WO2015144208A1
公开(公告)日：2015-10-01
申请号：PCT/EP2014/055898
申请日：2014-03-25
申请人： TELEFONAKTIEBOLAGET L M ERICSSON (PUBL)
发明人： SAHLIN, Henrik , PARKVALL, Stefan , ANDERSSON, Håkan , FURUSKOG, Johan , NAUCLÉR, Peter , BALDEMAIR, Robert
IPC分类号： H04W74/00
CPC分类号： H04W74/0833 , H04L5/0007 , H04W72/02 , H04W72/0446 , H04W72/0453 , H04W74/004 , H04W74/006
摘要： The present invention relates to a user terminal, UE, in a wireless communication system (1). The user terminal (4a, 4b) comprisesa receiver unit(5a, 5b), a transmitter unit(6a, 6b) configured to transmit data in transmit sub-frames occurring at defined sub-frameintervals, and a control unit(7a, 7b) configured to control the receiver circuit (5a, 5b) andthetransmitter circuit (6a, 6b).The control unit(7a, 7b) is alsoconfigured tocreate a PRACH, Physical Random-Access Channel, preamble (27) as an uplink transmission to a node (2) that is arranged to receive communication from the user terminal in said sub-frames. This communication comprises OFDM, Orthogonal Frequency-Division Multiplexing, based symbols (20). The control unit(7a, 7b)is configured to create each PRACH preamble (27) such that is comprises a sequence of a plurality of identical random access sequences (s(n)), where each random access sequence (s(n)) has the same length in time as each one of the OFDM based symbols (20a, 20b, 20c). The present invention also relates to a corresponding method.
摘要翻译：本发明涉及无线通信系统（1）中的用户终端（UE）。用户终端（4a，4b）包括接收机单元（5a，5b），发送单元（6a，6b），被配置为在定义的子帧间隔发生的发送子帧中发送数据;以及控制单元（7a，7b）配置为控制接收机电路（5a，5b）和传送器电路（6a，6b）。控制单元（7a，7b）还被配置为创建作为上行链路传输的节点的PRACH，物理随机接入信道，前同步码（27）（2），被配置为从所述子帧中的用户终端接收通信。该通信包括OFDM，正交频分复用，基于符号（20）。控制单元（7a，7b）被配置为创建每个PRACH前导码（27），使得其包括多个相同的随机访问序列（s（n））的序列，其中每个随机访问序列（s（n））具有与每个基于OFDM的符号（20a，20b，20c）相同的时间长度。本发明还涉及相应的方法。

45. 发明公开

EP2865233A1 SIMPLIFIED PRACH PROCEDURE USING SPECULATIVE RANDOM ACCESS RESPONSE 失效
标题翻译： VEREINFACHTES PRACH-VERFAHREN MITTELS SPEKULATIVE DIREKTZUGRIFFSANTWORT
公开(公告)号：EP2865233A1
公开(公告)日：2015-04-29
申请号：EP12728100.4
申请日：2012-06-21
申请人： Telefonaktiebolaget L M Ericsson (Publ)
发明人： OLSSON, Thomas , SAHLIN, Henrik , BRAUER, Peter , CARLSSON, Roland , ENGDAL, David , CARLSSON, Anders , SVENSSON, Jim
IPC分类号： H04W74/00
CPC分类号： H04W74/0833 , H04W72/04 , H04W74/002
摘要： The present invention relates to method and arrangement in cellular mobile communication systems, in particular for handling of a physical random access channel for example in a Long Term Evolution communication network. By sending to at least one user equipment (101), UE, in a communication network cell (105) an un-solicited speculative random access response, RAR, message comprising information relating to at least one of pre-amble identifier, allocated UE identifier, and uplink resource allocation data for L2/L3 message, it is possible to reduce the complexity of the access node (102), e.g. an eNodeB.
摘要翻译：本发明涉及蜂窝移动通信系统中的方法和装置，特别是用于处理例如长期演进通信网络中的物理随机接入信道。通过向通信网络小区中的至少一个用户设备UE发送未请求的推测性随机接入响应RAR消息，其包括与前同步标识符，分配的UE标识符和上行链路资源分配数据中的至少一个有关的信息对于L2 / L3消息，可以降低接入节点的复杂度，例如一个eNodeB。

46. 发明公开

EP2529523A1 BLOCK DECODING USING OVERLAPPING AND ADD 审中-公开
标题翻译：具有交叠和添加模块解码
公开(公告)号：EP2529523A1
公开(公告)日：2012-12-05
申请号：EP11703290.4
申请日：2011-01-26
申请人： Telefonaktiebolaget L M Ericsson (PUBL)
发明人： LOPEZ, Miguel , SAHLIN, Henrik
IPC分类号： H04L25/02 , H04L27/26
CPC分类号： H04L25/0224 , H04L27/2605
摘要： By exploiting the multi -block structure of the used slot format having a training sequence in the time domain and at least one pre-coded user data block to sequentially reconstruct the slot, using in the first step known symbols and using detected symbols in each subsequent step and improved receiver can be provided. This can result in less ISl/lBI and therefore increased performance. A training sequence known at the receiver is used for channel estimation. The channel estimation is used to reconstruct the value of the received block containing the training sequence. The reconstructed block is subtracted from the received block and an overlapping and add algorithm is applied to the substracted result and the previous block. Finally, the method is recursively applied for the preceedings blocks.

47. 发明公开

EP2374230A1 METHOD FOR ESTIMATING UPLINK CONTROL CHANNEL QUALITY 有权
标题翻译：一种估计UP区域控制信道质量
公开(公告)号：EP2374230A1
公开(公告)日：2011-10-12
申请号：EP08876307.3
申请日：2008-12-09
申请人： Telefonaktiebolaget L M Ericsson (PUBL)
发明人： SIMONSSON, Arne , BURSTRÖM, Per , SAHLIN, Henrik , MÄLLO, Aare
IPC分类号： H04B17/00 , H04W52/16 , H04L1/00
CPC分类号： H04W72/085 , H04L1/0026 , H04L1/0036 , H04L1/20 , H04W52/146 , H04W52/325
摘要： According to embodiment of the present invention, there is provided a radio base station (20) and a corresponding method for estimating the quality of the uplink control channel. The method comprises measuring (32, 42) a quality parameter of the uplink data channel, and using (38, 50) this to estimate the quality of the uplink control channel. In one embodiment, measurements of the uplink control channel are taken and their reliability determined. If the reliability is low (i.e. below a threshold, or below the respective measurements taken on the uplink data channel), then measurements on the data channel are used instead of those made on the control channel to estimate the control channel quality.

48. 发明授权

EP2507921B1 SPATIAL AND TEMPORAL PRE-EQUALIZATION 有权
标题翻译：空间和时间预失真
公开(公告)号：EP2507921B1
公开(公告)日：2013-08-14
申请号：EP09774869.3
申请日：2009-12-01
申请人： Telefonaktiebolaget L M Ericsson (PUBL)
发明人： SAHLIN, Henrik , SIHLBOM, Björn Ulf Anders
IPC分类号： H04L25/03 , H04B1/7115
CPC分类号： H04L25/03133 , H04B1/7115 , H04L25/03159

49. 发明公开

EP2507921A1 SPATIAL AND TEMPORAL PRE-EQUALIZATION 有权
标题翻译：空间和时间预失真
公开(公告)号：EP2507921A1
公开(公告)日：2012-10-10
申请号：EP09774869.3
申请日：2009-12-01
申请人： Telefonaktiebolaget L M Ericsson (PUBL)
发明人： SAHLIN, Henrik , SIHLBOM, Björn Ulf Anders
IPC分类号： H04B7/08 , H04L1/06
CPC分类号： H04L25/03133 , H04B1/7115 , H04L25/03159
摘要： The present invention describes a channel equalizer and a method for channel equalization in a receiver in a multi-user communication system. The method comprises the steps of receiving a signal with at least two antennas to produce at least two antenna input streams, measuring the temporal of each antenna input stream and the spatial correlation between the antenna input streams, determining a user-independent pre-equalization filter from the temporal and spatial correlation, filtering the antenna input streams with the pre-equalization filter, and finally inputting the filtered signal to a user-dependent receiver configured to detect the received data symbols of a given user.

50. 发明公开

EP2286562A1 METHODS AND ARRANGEMENTS IN A WIRELESS COMMUNICATION SYSTEM FOR PRODUCING SIGNAL STRUCTURE WITH CYCLIC PREFIX 有权
标题翻译：方法和安排无线通信系统，用来产生信号结构具有循环前缀
公开(公告)号：EP2286562A1
公开(公告)日：2011-02-23
申请号：EP08767178.0
申请日：2008-06-13
申请人： Telefonaktiebolaget L M Ericsson (publ)
发明人： LARSSON, Peter , SAHLIN, Henrik
IPC分类号： H04L27/26
CPC分类号： H04L27/2607 , H04L1/0079 , H04L27/2662
摘要： The present invention relates to methods and arrangements in a wireless communication system supporting cyclic-prefix insertion, using a symbol sequence comprising a number of samples for transmission over a radio channel that enables the handling of very large signal delay spreads. The symbol sequence is built up by a first symbol with CP and a second symbol with CP. The second symbol is a copy of the first symbol with the samples shifted in a way that makes the two adjacent symbols with CP match in regards to the sample order. The symbol sequence may also comprise a third symbol with CP or more, where the third symbol is a copy of the second symbol and with the samples shifted in analogy with the symbol shift described above. The resulting symbol sequence will thus appear as an extended continuous symbol thanks to the precise cyclic shift that matches adjacent symbols. This allows the receiver to place its FFT window anywhere during the extended symbol, e.g. at the end of the symbol sequence thus making it possible to handle a delay spread longer than the CP duration. It also allows to place e.g. two FFT windows and to combine the extracted signal into one SNR improved signal, while still handling a longer delay spread.

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