公开(公告)号：US08902811B2

公开(公告)日：2014-12-02

申请号：US13379602

申请日：2010-06-16

申请人： Robert Baldemair ,  David Astely ,  Erik Dahlman ,  Ylva Jading

发明人： Robert Baldemair ,  David Astely ,  Erik Dahlman ,  Ylva Jading

IPC分类号： H04L7/00 ,  H04W92/00 ,  H04W56/00

CPC分类号： H04W56/0045 ,  H04L5/001 ,  H04W56/0065

摘要： The present invention relates to methods and arrangements in a base station and a user equipment for determining an uplink transmission timing correction for communication in a telecommunication system in which aggregation of component carriers is applied. The base station receives a signal from the user equipment on a uplink (UL) component carrier and measures the arrival time of the signal. A timing correction of the UL transmission timing based on the arrival time of the signal is determined. Thereupon the base station determines for which of the uplink component carriers used by the user equipment the timing correction is valid. The timing correction and the validity information is sent to the user equipment. The user equipment adjusts the UL transmission timing for each UL component carrier the timing correction is valid for.

摘要翻译： 本发明涉及在应用分量载波的聚合的电信系统中确定用于通信的上行链路传输定时校正的基站和用户设备中的方法和装置。 基站在上行链路（UL）分量载波上接收来自用户设备的信号，并测量信号的到达时间。 确定基于信号的到达时间的UL传输定时的定时校正。 因此，基站确定用户设备使用的哪个上行链路分量载波的定时校正是有效的。 定时校正和有效性信息被发送到用户设备。 用户设备调整定时校正有效的每个UL分量载波的UL传输定时。

公开(公告)号：US08238303B2

公开(公告)日：2012-08-07

申请号：US12324073

申请日：2008-11-26

申请人： Kambiz Zangi ,  Erik Dahlman ,  Dennis Hui

发明人： Kambiz Zangi ,  Erik Dahlman ,  Dennis Hui

IPC分类号： H04J3/00

CPC分类号： H04L5/0051 ,  H04L5/0007 ,  H04L5/0062 ,  H04L25/0202

摘要： The present invention provides a method of generating mutually orthogonal reference signals for different user terminals in and OFDM system that span different but overlapping subcarriers. The subcarriers allocated to the user terminals are divided into a plurality of non-overlapping subcarrier blocks. Each user terminal is then allocated one or more subcarrier blocks. For each subcarrier block, a user terminal is assigned a reference signal comprising a base reference sequence and a linear phase rotation. To ensure mutual orthogonality among all user terminals, user terminals allocated the same subcarrier block use the same base reference sequence with different linear phase rotations.

摘要翻译： 本发明提供了一种对跨越不同但重叠的子载波的不同用户终端和OFDM系统生成相互正交参考信号的方法。 分配给用户终端的副载波被划分成多个不重叠的副载波块。 然后，每个用户终端被分配一个或多个子载波块。 对于每个子载波块，向用户终端分配包括基本参考序列和线性相位旋转的参考信号。 为了确保所有用户终端之间的相互正交性，分配相同子载波块的用户终端使用具有不同线性相位旋转的相同的基准参考序列。

公开(公告)号：US20120157103A1

公开(公告)日：2012-06-21

申请号：US13319258

申请日：2009-05-08

申请人： Pål Frenger ,  Robert Baldemair ,  Erik Dahlman

发明人： Pål Frenger ,  Robert Baldemair ,  Erik Dahlman

IPC分类号： H04W36/08 ,  H04W52/02

CPC分类号： H04W36/0055 ,  H04W52/0216 ,  H04W76/28 ,  H04W92/20 ,  Y02D70/1222 ,  Y02D70/1242 ,  Y02D70/1262 ,  Y02D70/146 ,  Y02D70/24 ,  Y02D70/25

摘要： A method in a first base station for supporting DTX is provided. The first base station serves a first cell being in an active mode. The first base station communicates with a user equipment within the first cell. The first base station is comprised in a radio communications system further comprising the user equipment and a second base station serving a second cell being in a non observable mode. The first base station sends (602) to the second base station, a request to switch the second cell state from a non observable mode to an observable mode. It further sends (603) to the user equipment or to the second base station, a request to perform signalling between the user equipment and the second base station for quality measurements. The first base station then obtains (604) information that handover is feasible, based on quality measurement of the performed signalling. The first base station sends (605) to the second base station, a request to prepare handover of the user equipment from the first cell to the second cell, and further (606) to the user equipment, a command to perform handover to the second cell.

摘要翻译： 提供了一种用于支持DTX的第一基站中的方法。 第一基站服务于处于活动模式的第一小区。 第一基站与第一小区内的用户设备进行通信。 第一基站包括在还包括用户设备和服务于不可观察模式的第二小区的第二基站的无线电通信系统中。 第一基站向第二基站发送（602）将第二小区状态从不可观察模式切换到可观察模式的请求。 它进一步向用户设备或第二基站发送（603）请求以在用户设备和第二基站之间执行用于质量测量的信令。 然后，基于进行的信令的质量测量，第一基站获得切换可行的信息（604）。 第一基站向第二基站发送（605）请求，准备将用户设备从第一小区切换到第二小区，并且进一步（606）到用户设备，执行向第二小区切换的命令 细胞。

公开(公告)号：US20110111785A1

公开(公告)日：2011-05-12

申请号：US12934137

申请日：2008-09-03

申请人： Bengt Lindoff ,  Erik Dahlman ,  Stefan Parkall

发明人： Bengt Lindoff ,  Erik Dahlman ,  Stefan Parkall

IPC分类号： H04W72/04 ,  H04W72/08

CPC分类号： H04W40/16 ,  H04L5/001 ,  H04L5/0044 ,  H04L5/0053 ,  H04L5/0094 ,  H04L5/0098 ,  H04W52/0229 ,  H04W72/00 ,  H04W76/15 ,  Y02D70/1262 ,  Y02D70/1264 ,  Y02D70/24

摘要： Mechanisms for efficient transmission of large amount of download data from a base station (210) to a user equipment (220) in a multi-carrier that minimizes power consumption on the user equipment are described. When multiple component carriers are to be used to transmit the download data, the base station (210) informs the user equipment (220). The base station (210) transmits on the anchor carriers without wait after informing the user equipment (220) and transmits on the non-anchor carriers after waiting a predetermined delay. The predetermined delay provides time to allow the user equipment (220) to activate the receiving resources and be ready to receive the download data over the non-anchor carriers. In this manner, the user equipment (220) can be in a power conservation mode and activate the receiver resources only when needed.

摘要翻译： 描述了将大量下载数据从基站（210）有效传输到多载波中的用户设备（220）的机制，其使用户设备的功耗最小化。 当使用多个分量载波来发送下载数据时，基站（210）通知用户设备（220）。 在通知用户设备（220）之后，基站（210）在锚定载波上进行无等待地发送，并且在等待预定延迟之后在非锚定载波上发送。 预定延迟提供了时间，以允许用户设备（220）激活接收资源并且准备好通过非锚定载波接收下载数据。 以这种方式，用户设备（220）可以处于功率节省模式，并且仅在需要时激活接收机资源。

公开(公告)号：US07904093B2

公开(公告)日：2011-03-08

申请号：US10582478

申请日：2004-12-01

申请人： Johan Nyström ,  Pål Frenger ,  Erik Dahlman ,  Svante Signell ,  Göran Klang

发明人： Johan Nyström ,  Pål Frenger ,  Erik Dahlman ,  Svante Signell ,  Göran Klang

IPC分类号： H04W72/00

CPC分类号： H04L5/0048 ,  H04L1/0026 ,  H04L5/0007 ,  H04L5/006 ,  H04L25/0226 ,  H04W16/02 ,  H04W16/10 ,  H04W16/12 ,  H04W52/325 ,  H04W72/08

摘要： A set of different pilot structures are designed for use in different environments and/or different user behaviours that are expected to occur in a cell. The radio conditions for a user are estimated. Each user is then assigned an area (108A-E) in resource space for its communication, which has a suitable pilot configuration. In one embodiment, the entire resource space is provided with different pilot structures in different parts (110A-D) In advance and allocation of resources to the users are then performed in order to match estimated radio conditions to the provided pilot structure. In another embodiment, allocation is performed first, and then the actual pilot structure is adapted within the allocated resource space area to suit the environmental conditions.

摘要翻译： 一组不同的导频结构被设计用于不同环境和/或预期在小区中发生的不同用户行为。 估计用户的无线电条件。 然后，在用于其通信的资源空间中为每个用户分配一个区域（108A-E），该区域具有合适的导频配置。 在一个实施例中，整个资源空间在不同部分（110A-D）中设置有不同的导频结构。 然后提前向用户分配资源，以便将估计的无线电条件与所提供的导频结构相匹配。 在另一个实施例中，首先执行分配，然后在所分配的资源空间区域内适配实际的导频结构以适应环境条件。

公开(公告)号：US20100296547A1

公开(公告)日：2010-11-25

申请号：US12864252

申请日：2008-01-25

申请人： Per Skillermark ,  Anders Furuskar ,  Erik Dahlman

发明人： Per Skillermark ,  Anders Furuskar ,  Erik Dahlman

IPC分类号： H04B1/00

CPC分类号： H04L5/0048 ,  H04B1/715 ,  H04B2001/7154 ,  H04L5/0012

摘要： The present invention increases the interference diversity in systems with the frame structure described above by using frequency hopping sequences that are selected considering characteristics of the channel relating to how the channel varies. According to a first embodiment, the channel characteristics relate to channel coherence time and according to a second embodiment, the channel characteristics relate to channel coherence bandwidth. For channels with long coherence times, the transmission hops back and forth several times during a TTI on the different available frequencies. For channels with widecoherence bandwidths, hopping may be performed between the frequency used by the reference signals and its neighbor frequencies. For channels with both long coherence times and widecoherence bandwidths, a combination may be used.

摘要翻译： 本发明通过使用考虑与频道变化相关的信道的特性来选择的跳频序列来增加具有上述帧结构的系统中的干扰分集。 根据第一实施例，信道特性涉及信道相干时间，并且根据第二实施例，信道特性涉及信道相干带宽。 对于具有长相干时间的信道，在不同可用频率下的TTI期间，传输来回跳动若干次。 对于具有宽相干带宽的信道，可以在参考信号使用的频率与其相邻频率之间执行跳频。 对于具有长相干时间和宽相干带宽的信道，可以使用组合。

公开(公告)号：US06442153B1

公开(公告)日：2002-08-27

申请号：US09169731

申请日：1998-10-09

申请人： Erik Dahlman ,  Karim Jamal

发明人： Erik Dahlman ,  Karim Jamal

IPC分类号： H04B7216

CPC分类号： H04W74/0833 ,  H04B7/2637 ,  H04W28/06

摘要： A novel format is provided for an uplink common physical channel in a random access mobile communications system, whereby a mobile station transmits a first packet including a predetermined signature pattern in parallel with a second packet including the data part of the random access request. Consequently, in addition to its attendant advantages, the signature part of a random access request can also function as a Pilot by providing additional energy for channel estimation during the data part of the request, while reducing the amount of overhead signalling involved. This additional energy is especially useful for ensuring sufficiently high quality coherent detection of the data part in a rapidly varying radio channel environment.

摘要翻译： 为随机接入移动通信系统中的上行链路公共物理信道提供一种新颖的格式，由此移动台与包括随机接入请求的数据部分的第二分组并行发送包括预定签名模式的第一分组。 因此，除了其伴随的优点之外，随机接入请求的签名部分还可以通过在请求的数据部分期间为信道估计提供额外的能量，同时减少所涉及的开销信令的量，来用作导频。 这种额外的能量对于确保在快速变化的无线电信道环境中的数据部分的足够高的质量相干检测特别有用。

公开(公告)号：US06173162B2

公开(公告)日：2001-01-09

申请号：US08874907

申请日：1997-06-16

申请人： Erik Dahlman ,  Johan Lundsjö ,  Mathias Johansson

发明人： Erik Dahlman ,  Johan Lundsjö ,  Mathias Johansson

IPC分类号： H04B100

CPC分类号： H04W52/325 ,  H04B7/2628 ,  H04W52/12 ,  H04W52/16 ,  H04W52/24

摘要： Methods of controlling the power levels of transmitted signals in telecommunication systems are described. A user may be assigned a plurality of radio bearers associated with a plurality of physical channels for communicating with a radiocommunication system. A fast power control loop monitors a reference channel and adjusts transmit power in accordance with an SIR target value. A plurality of slow power control loops adjust the SIR target value and also provide offset transmit power values associated with each physical channel to adapt the transmit powers in accordance with varying quality requirements between radio bearers.

摘要翻译： 描述了控制电信系统中发射信号功率电平的方法。 可以向用户分配与多个物理信道相关联的多个无线电承载，用于与无线电通信系统通信。 快速功率控制回路监视参考通道并根据SIR目标值调整发射功率。 多个慢功率控制环路调整SIR目标值并且还提供与每个物理信道相关联的偏移发射功率值，以根据无线电承载之间的不同质量要求来适配发射功率。

公开(公告)号：US08594012B2

公开(公告)日：2013-11-26

申请号：US12740260

申请日：2008-04-16

申请人： Erik Dahlman ,  Anders Furuskar

发明人： Erik Dahlman ,  Anders Furuskar

IPC分类号： H04B7/185

CPC分类号： H04W52/146 ,  H04W52/286 ,  H04W52/325 ,  H04W52/54

摘要： A transmit power control (TPC) method and a user equipment (UE) of a telecommunications network utilizing the TPC method. The UE receives TPC commands intended for traffic and control channels. The TPC commands are separately identified by logical or physical resources associated with the channels. When the traffic and control channel TPCs occupy the same resources, the UE applies common power control commands to the traffic and control channels. When the traffic and control channel TPCs occupy different resources, the UE applies separate power control commands to the traffic and control channels.

摘要翻译： 一种使用TPC方法的电信网络的发射功率控制（TPC）方法和用户设备（UE）。 UE接收用于业务和控制信道的TPC命令。 TPC命令由与通道相关联的逻辑或物理资源单独标识。 当业务和控制信道TPC占用相同的资源时，UE向业务和控制信道应用公共功率控制命令。 当业务和控制信道TPC占用不同的资源时，UE向业务和控制信道应用单独的功率控制命令。

公开(公告)号：US20120099439A1

公开(公告)日：2012-04-26

申请号：US13381026

申请日：2010-06-29

申请人： Robert Baldemair ,  Ylva Jading ,  Erik Dahlman ,  David Astely

发明人： Robert Baldemair ,  Ylva Jading ,  Erik Dahlman ,  David Astely

IPC分类号： H04W72/04 ,  H04W24/00

CPC分类号： H04W72/1289 ,  H04L5/0044 ,  H04L5/0094 ,  H04L5/0096 ,  H04W24/10

摘要： Methods and user equipment are provided for activation of downlink component carriers. Even though configured to monitor multiple component carriers, a user equipment unit does not start to monitor them immediately, but instead monitors only one or a few carriers initially. Once a downlink scheduling assignment is received, the user equipment unit will then monitor additional component carriers. After one or more subframes where the user equipment unit is not scheduled, the user equipment unit returns to its original state where it monitors one or a few carriers.

摘要翻译： 提供了用于激活下行链路分量载波的方法和用户设备。 即使配置为监视多个分量载波，用户设备单元也不会立即开始监视它们，而是最初只监控一个或几个运营商。 一旦接收到下行链路调度分配，用户设备单元将监视附加分量载波。 在用户设备单元未被调度的一个或多个子帧之后，用户设备单元返回其监视一个或几个载波的其原始状态。