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    • 41. 发明申请
    • ADJUSTMENT OF RADIO DETECTION LEVEL FOR REQUEST SIGNALS BASED OBSERVED FALSE DETECTION
    • 基于请求信号的无线电检测级别的调整基于观察的虚假检测
    • US20110110240A1
    • 2011-05-12
    • US12863025
    • 2008-02-21
    • Gunnar BergquistTobias Tynderfeldt
    • Gunnar BergquistTobias Tynderfeldt
    • H04W72/04H04L12/26
    • H04W74/0866H04W74/0833
    • The present invention relates to receiving access signals from a plurality of terminals over a radio channel and in particular to determining a detection threshold level on the radio channel. A detection threshold level should balance the risk of missed detections to the risk of false detections. A problem in finding an equilibrium threshold is the radio environment, with noise and interference, change and then also the radio false detections or missed detections change. According to the present invention some access signals can be identified as being not assigned and therefore not being in use, and any detection of a non-used signal is identified as a false detection. By monitoring the ratio of false detections vs. correct detections the threshold level for detection is tuned into an equilibrium level, and that is adapted to the changing radio environments. In addition the detection threshold level for access signals detection threshold for data and/or control signalling may be adjusted in relation to the access signal threshold level.
    • 本发明涉及通过无线电信道从多个终端接收接入信号,特别涉及确定无线电信道上的检测阈值电平。 检测阈值水平应将错误检测的风险与错误检测的风险进行平衡。 找到平衡阈值的一个问题是无线电环境,噪声和干扰,变化,然后无线电错误检测或错过检测变化。 根据本发明,一些接入信号可以被识别为未被分配,因此不被使用,并且未使用的信号的任何检测被识别为错误检测。 通过监测错误检测与正确检测的比率,检测阈值水平被调整到一个均衡水平,并适应不断变化的无线电环境。 此外,可以相对于接入信号阈值电平来调整用于数据和/或控制信令的接入信号检测阈值的检测阈值电平。
    • 42. 发明申请
    • RANDOM ACCESS PREAMBLE COLLISION DETECTION
    • 随机访问可预防碰撞检测
    • US20100220713A1
    • 2010-09-02
    • US12741502
    • 2008-11-05
    • Tobias TynderfeldtMagnus Lindström
    • Tobias TynderfeldtMagnus Lindström
    • H04W56/00H04J3/06
    • H04W56/0005H04W56/0045
    • A method (500) for a user terminal (120, 130) in a cellular system (100). The user terminal (120, 130) applies (505) a timing advance to transmissions to a controlling node (140). The user terminal (120, 130) requests (510) communication with the controlling node (140) by a special message (MSG 1), in response to which the user terminal (120, 130) receives (515) a message (MSG 2) which includes an updated value for the timing advance. The user terminal (120, 130) compares (520) the updated value with the value of the timing advance that the user terminal had prior to the reception of said response message. If the difference (Δ) between the prior value and the updated value is greater than a first predetermined threshold (T1) or below a second predetermined threshold (T2), the user terminal (120, 130) ignores (525) the response message (MSG 2) and renews its request for communication.
    • 一种用于蜂窝系统(100)中的用户终端(120,130)的方法(500)。 用户终端(120,130)将定时提前(505)应用于向控制节点(140)发送。 用户终端(120,130)通过特殊消息(MSG 1)请求(510)与控制节点(140)的通信,响应于此,用户终端(120,130)接收(515)消息(MSG 2 ),其包括用于定时提前的更新的值。 用户终端(120,130)比较(520)更新的值与用户终端在接收到所述响应消息之前具有的定时提前的值。 如果先前值和更新值之间的差(&Dgr)大于第一预定阈值(T1)或低于第二预定阈值(T2),则用户终端(120,130)忽略(525)响应消息 (MSG 2),并更新其通信请求。
    • 45. 发明申请
    • Diagonally layered multi-antenna transmission for frequency selective channels
    • 用于频率选择通道的对角分层多天线传输
    • US20050118953A1
    • 2005-06-02
    • US10509996
    • 2003-03-19
    • Tobias Tynderfeldt
    • Tobias Tynderfeldt
    • H04L1/06H04B1/00H04B15/00H04Q7/20
    • H04L1/0618
    • A method and a system are disclosed for avoiding inter-layer inter-symbol interference. Diagonally layered multi-antenna transmissions are utilised by the proposed method and system. Known symbols are inserted at the borders between different layers to avoid inter-layer inter-symbol interference. The system relies on an improved method to transmit multiple data-streams (layers). The invention describes a method for transmitting data-streams over multiple antennas in an effective and smart way when having frequency selective channels. By utilising a system using the present method problems with inter-layer inter-symbol interference between different data-streams can be avoided when changing transmit antenna for the data-streams. The invention utilises that a diagonal layered multi-antenna transmission will not create inter-symbol interference, ISI, between different layers.
    • 公开了一种用于避免层间符号间干扰的方法和系统。 所提出的方法和系统利用对角分层的多天线传输。 已知符号插入不同层之间的边界以避免层间符号间干扰。 该系统依赖于一种改进的方法来传输多个数据流(层)。 本发明描述了当具有频率选择性信道时,以有效和智能的方式在多个天线上发送数据流的方法。 通过利用本方法的系统,当改变用于数据流的发送天线时,可以避免不同数据流之间的层间符号间干扰问题。 本发明利用对角分层多天线传输不会在不同层之间产生符号间干扰(ISI)。
    • 47. 发明授权
    • Timing alignment in an LTE system
    • LTE系统中的时序对齐
    • US09204468B2
    • 2015-12-01
    • US12741328
    • 2008-06-09
    • Tobias TynderfeldtMagnus Lindstrom
    • Tobias TynderfeldtMagnus Lindstrom
    • H04J3/06H04W74/08H04W56/00
    • H04W56/0005H04W56/0045H04W74/0833H04W74/0841
    • A method (500) for use in a user terminal (120, 130) in a cellular communications system (100). According to the method, the user terminal applies a first timing advance value (505) to its transmissions to a controlling node (140), and the user terminal (120, 130) requests communication with the controlling node (140) in a contention based procedure by transmitting an access request (MSG 1), in response (515) to which the controlling node transmits an initiation message (MSG 2) along with (520) a second timing advance value. According to the method (500), the user terminal (120, 130) uses (530) the first timing advance value if the user terminal loses the contention based procedure, i.e. if the controlling node subsequently continues the initiated communication with said other user terminal.
    • 一种用于蜂窝通信系统(100)中的用户终端(120,130)中的方法(500)。 根据该方法,用户终端向控制节点(140)向其传输应用第一定时提前值(505),并且用户终端(120,130)在基于争用的基础上请求与控制节点(140)的通信 响应(515)发送与控制节点发送启动消息(MSG 2)一起的接入请求(MSG 1)以及(520)第二定时提前值的过程。 根据方法(500),用户终端(120,130)如果用户终端丢失基于竞争的过程(即,如果控制节点随后继续与所述其他用户终端的发起的通信),则使用(530)第一定时提前值 。
    • 48. 发明授权
    • Uplink transmission timing
    • 上行链路传输定时
    • US09161350B2
    • 2015-10-13
    • US13976125
    • 2010-12-30
    • David BetterFranz HeiserTobias Tynderfeldt
    • David BetterFranz HeiserTobias Tynderfeldt
    • H04W72/04H04L12/26H04W56/00
    • H04W72/0413H04L43/00H04W56/0005H04W56/001H04W56/0045H04W56/0075
    • Embodiments herein relates to a method in a radio base station (12) for handling a timing of uplink transmission from a user equipment (10) to the radio base station (12) in a radio communications network. The user equipment (10) is served in a cell (14) controlled by the radio base station (12), and which radio base station (12) and user equipment (10) are comprised in the radio communications network. The communications in the cell (14) are organized in radio frames comprising subframes. The radio base station (12) receives a first uplink transmission from the user equipment (10) in a subframe related to the radio base station (12). The radio base station then estimates a time parameter value based on a distance between the user equipment (10) and the radio base station (12) when the first uplink transmission is transmitted from the user equipment (10). The radio base station (12) then sets a time value (NTA1) in a message, which time value (NTA1) is to be used to set a timing of a second uplink transmission at the user equipment (10). The time value (NTA1) is based on the estimated time parameter value and a time offset value (ΔT). The radio base station (12) then transmits the message comprising the time value (NTA1) to the user equipment.
    • 本发明的实施例涉及无线电基站(12)中用于处理无线电通信网络中的用户设备(10)到无线电基站(12)的上行链路传输定时的方法。 用户设备(10)在由无线电基站(12)控制的小区(14)中服务,并且无线电基站(12)和用户设备(10)被包括在无线电通信网络中。 小区(14)中的通信被组织在包括子帧的无线电帧中。 无线电基站(12)在与无线电基站(12)相关的子帧中从用户设备(10)接收第一上行链路传输。 然后,当从用户设备(10)发送第一上行链路传输时,无线电基站基于用户设备(10)和无线电基站(12)之间的距离来估计时间参数值。 无线电基站(12)然后在消息中设置时间值(NTA1),该时间值(NTA1)将用于在用户设备(10)设置第二上行链路传输的定时。 时间值(NTA1)基于估计的时间参数值和时间偏移值(&Dgr; T)。 无线电基站(12)然后将包括时间值(NTA1)的消息发送到用户设备。
    • 49. 发明申请
    • Uplink Transmission Timing
    • 上行链路传输时序
    • US20130336268A1
    • 2013-12-19
    • US13976125
    • 2010-12-30
    • David BetterFranz HeiserTobias Tynderfeldt
    • David BetterFranz HeiserTobias Tynderfeldt
    • H04W72/04H04W56/00
    • H04W72/0413H04L43/00H04W56/0005H04W56/001H04W56/0045H04W56/0075
    • Embodiments herein relates to a method in a radio base station (12) for handling a timing of uplink transmission from a user equipment (10) to the radio base station (12) in a radio communications network. The user equipment (10) is served in a cell (14) controlled by the radio base station (12), and which radio base station (12) and user equipment (10) are comprised in the radio communications network. The communications in the cell (14) are organized in radio frames comprising subframes. The radio base station (12) receives a first uplink transmission from the user equipment (10) in a subframe related to the radio base station (12). The radio base station then estimates a time parameter value based on a distance between the user equipment (10) and the radio base station (12) when the first uplink transmission is transmitted from the user equipment (10). The radio base station (12) then sets a time value (NTA1) in a message, which time value (NTA1) is to be used to set a timing of a second uplink transmission at the user equipment (10). The time value (NTA1) is based on the estimated time parameter value and a time offset value (ΔT). The radio base station (12) then transmits the message comprising the time value (NTA1) to the user equipment.
    • 本发明的实施例涉及无线电基站(12)中用于处理无线电通信网络中的用户设备(10)到无线电基站(12)的上行链路传输定时的方法。 用户设备(10)在由无线电基站(12)控制的小区(14)中服务,并且无线电基站(12)和用户设备(10)被包括在无线电通信网络中。 小区(14)中的通信被组织在包括子帧的无线电帧中。 无线电基站(12)在与无线电基站(12)相关的子帧中从用户设备(10)接收第一上行链路传输。 然后,当从用户设备(10)发送第一上行链路传输时,无线电基站基于用户设备(10)和无线电基站(12)之间的距离来估计时间参数值。 无线电基站(12)然后在消息中设置时间值(NTA1),该时间值(NTA1)将用于在用户设备(10)设置第二上行链路传输的定时。 时间值(NTA1)基于估计的时间参数值和时间偏移值(DeltaT)。 无线电基站(12)然后将包括时间值(NTA1)的消息发送到用户设备。
    • 50. 发明授权
    • Random access preamble collision detection
    • 随机接入前导码冲突检测
    • US08411664B2
    • 2013-04-02
    • US12741502
    • 2008-11-05
    • Tobias TynderfeldtMagnus Lindström
    • Tobias TynderfeldtMagnus Lindström
    • H04W56/00H04J3/06
    • H04W56/0005H04W56/0045
    • A method (500) for a user terminal (120, 130) in a cellular system (100). The user terminal (120, 130) applies (505) a timing advance to transmissions to a controlling node (140). The user terminal (120, 130) requests (510) communication with the controlling node (140) by a special message (MSG 1), in response to which the user terminal (120, 130) receives (515) a message (MSG 2) which includes an updated value for the timing advance. The user terminal (120, 130) compares (520) the updated value with the value of the timing advance that the user terminal had prior to the reception of said response message. If the difference (Δ) between the prior value and the updated value is greater than a first predetermined threshold (T1) or below a second predetermined threshold (T2), the user terminal (120, 130) ignores (525) the response message (MSG 2) and renews its request for communication.
    • 一种用于蜂窝系统(100)中的用户终端(120,130)的方法(500)。 用户终端(120,130)将定时提前(505)应用于向控制节点(140)发送。 用户终端(120,130)通过特殊消息(MSG 1)请求(510)与控制节点(140)的通信,响应于此,用户终端(120,130)接收(515)消息(MSG 2 ),其包括用于定时提前的更新的值。 用户终端(120,130)比较(520)更新的值与用户终端在接收到所述响应消息之前具有的定时提前的值。 如果先前值和更新值之间的差(&Dgr)大于第一预定阈值(T1)或低于第二预定阈值(T2),则用户终端(120,130)忽略(525)响应消息 (MSG 2),并更新其通信请求。