公开(公告)号：US08229365B2

公开(公告)日：2012-07-24

申请号：US12527959

申请日：2007-02-22

申请人： Erik Westerberg ,  David Astely ,  Hannes Ekstrom ,  Per Skillermark ,  Tobias Tynderfeldt

发明人： Erik Westerberg ,  David Astely ,  Hannes Ekstrom ,  Per Skillermark ,  Tobias Tynderfeldt

IPC分类号： H04B17/00

CPC分类号： H04W24/02 ,  H04L1/0026 ,  H04W24/10 ,  H04W56/0015 ,  H04W56/0075 ,  H04W88/08 ,  H04W92/20

摘要： A method for use in a cellular system comprising a plurality of base stations with corresponding cells, in which system the communication between users in a cell and the base station is divided into an up link period and a down link period, the method comprising letting a controlling node instruct the base stations regarding: a first point in time when the base station should start transmitting a control signal; a second point in time when the base station should start to listen for control signals from other base stations and measure their time of arrival and signal strength; a third point in time when the base station should cease listening for control signal; and a fourth point in time when the base station should transmit the measurements results to a receiving node in the system.

摘要翻译： 一种在蜂窝系统中使用的方法，包括具有相应小区的多个基站，其中，将小区中的用户与所述基站之间的通信划分为上行链路周期和下行链路周期，所述方法包括： 控制节点指示基站：基站应该开始发送控制信号的第一时间点; 基站应开始监听来自其他基站的控制信号并测量其到达时间和信号强度的第二时间点; 基站停止收听控制信号的第三个时间点; 以及基站应将测量结果发送到系统中的接收节点的第四时间点。

公开(公告)号：US08223817B2

公开(公告)日：2012-07-17

申请号：US12159455

申请日：2005-12-29

申请人： Henrik Nyberg ,  Per Skillermark

发明人： Henrik Nyberg ,  Per Skillermark

IPC分类号： H04B1/00

CPC分类号： H04B1/7143 ,  H04J2211/006 ,  H04J2211/008

摘要： The present invention relates to frequency hopping in wireless communication systems utilizing single-carriers with varying bandwidth. Frequency hopping is made possible by dividing the available bandwidth, associated to the available frequency spectrum, in a leveled structure, a bandwidth tree. By the use of a frequency hopping tree, which has the same structure as the bandwidth tree and wherein each leaf represent a hopping sequence, a frequency hopping scheme is determined. Orthogonality in-between the frequency hopping schemes for different users is ensured by letting a users hopping sequence value at a level n, be dependent on the hopping sequence value associated to the same branch structure on the adjacent level closer to the root of the tree, n−1, and an input sequence associated with the level n.

摘要翻译： 本发明涉及利用具有不同带宽的单载波的无线通信系统中的跳频。 通过将可用带宽与可用频谱相关联，可以通过将分级结构（带宽树）除以跳频。 通过使用具有与带宽树相同结构的跳频树，其中每个叶表示跳频序列，确定跳频方案。 通过让用户跳跃序列值为n来确保不同用户的跳频方案之间的正交性取决于与更靠近树根的相邻级别的相同分支结构相关联的跳频序列值， n-1，以及与级别n相关联的输入序列。

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：US20100097964A1

公开(公告)日：2010-04-22

申请号：US12528344

申请日：2007-02-23

申请人： David Astely ,  Per Skillermark ,  Tobias Tynderfeldt ,  Erik Westerberg ,  Hannes Ekstrom

发明人： David Astely ,  Per Skillermark ,  Tobias Tynderfeldt ,  Erik Westerberg ,  Hannes Ekstrom

IPC分类号： H04W72/04 ,  H04J3/00

CPC分类号： H04B7/2656

摘要： The invention discloses a method (1100) for a cellular wireless access TDD system (100) with a base stations (120, 220) for respective cells (110, 210) in the system, where each cell can accommodate at least a first user terminal (130, 230). The user terminals can receive traffic from their base stations during a down link period, and can transmit traffic to their base stations (120, 220) during an up link period (UL). There is a first guard period (TDu) at the transition from down link to up link, and a second guard period (TUD) at the transition from up link to down link. The method comprises measuring the interference level in a second plurality (110, 210) of cells during part of the time between two consecutive down link periods, and varying the duration of said first and/or second guard period in said second plurality of cells (110, 210) according to the interference level.

摘要翻译： 本发明公开了一种用于蜂窝无线接入TDD系统（100）的方法（1100），该系统具有用于系统中的相应小区（110,210）的基站（120,220），其中每个小区可容纳至少第一用户终端 （130,230）。 用户终端可以在下行链路周期期间从其基站接收业务，并且可以在上行链路周期（UL）期间向其基站（120,220）传送业务。 在从下行链路到上行链路的过渡期间存在第一保护期（TDu），以及从上行链路到下行链路的转变的第二保护期（TUD）。 该方法包括在两个连续的下行链路周期之间的部分时间内测量第二多个（110,210）小区中的干扰电平，并改变所述第二多个小区中的所述第一和/或第二保护周期的持续时间（ 110,210）。

公开(公告)号：US20090274234A1

公开(公告)日：2009-11-05

申请号：US12306132

申请日：2006-10-04

申请人： David Astely ,  Bo Göransson ,  Per Skillermark

发明人： David Astely ,  Bo Göransson ,  Per Skillermark

IPC分类号： H04B7/02

CPC分类号： H04B7/0626 ,  H04B7/043 ,  H04B7/0617 ,  H04B7/0684 ,  H04L1/20

摘要： A method of selecting at least one communication link in a wireless communication network is proposed, comprising the steps of transmitting from at least one transmitting node in the network a pilot signal from each of at least two transmitter antennas of the transmitting node, receiving the pilot signals from the at least two transmitter antennas in a receiving terminal, estimating, in the terminal, a covariance matrix of the channel, based on the pilot signals received, determining the pathloss for each antenna based on the covariance matrix, selecting one of at least two possible links for the communication between the terminal and the transmitting nodes. The terminal is enabled to measure on each transmitter antenna individually, which provides a better tool for link selection and cell selection.

摘要翻译： 提出了一种在无线通信网络中选择至少一个通信链路的方法，包括以下步骤：从网络中的至少一个发射节点发送来自发射节点的至少两个发射机天线中的每一个的导频信号，接收导频 来自接收终端中的至少两个发射机天线的信号，基于所接收的导频信号在终端中估计信道的协方差矩阵，基于协方差矩阵确定每个天线的路径损耗，至少选择一个 用于终端和发射节点之间的通信的两个可能的链路。 终端可以单独测量每个发射机天线，为链路选择和小区选择提供了更好的工具。

公开(公告)号：US20050111408A1

公开(公告)日：2005-05-26

申请号：US10720691

申请日：2003-11-25

申请人： Per Skillermark ,  Tomas Sundin

发明人： Per Skillermark ,  Tomas Sundin

IPC分类号： H04B1/707 ,  H04Q7/00 ,  H04Q7/38

CPC分类号： H04B1/7105

摘要： A mobile station for a TD—CDMA cellular system includes means for maintaining a list of intracell interferers to the mobile station. Further means (14, 16) detect intercell interferers to the mobile station by using handover related information available in the mobile station. Detected intercell interferers that fulfil a predetermined selection criterion are added to the list of interferers. Means (12) are provided for performing interference cancellation for all interferers, both intracell and intercell, in the list with a joint detection algorithm.

摘要翻译： 用于TD-CDMA蜂窝系统的移动站包括用于维持移动站的小区内干扰源的列表的装置。 进一步的手段（14,16）通过使用移动台中可用的切换相关信息来检测移动台的小区间干扰。 满足预定选择标准的检测到的小区间干扰源被添加到干扰源列表中。 提供了用于使用联合检测算法对列表中的所有干扰源（即小区和小区间）执行干扰消除的装置（12）。

公开(公告)号：US09294238B2

公开(公告)日：2016-03-22

申请号：US12672299

申请日：2008-05-16

申请人： Erik Dahlman ,  Ylva Jading ,  Per Skillermark ,  Stefan Parkvall

发明人： Erik Dahlman ,  Ylva Jading ,  Per Skillermark ,  Stefan Parkvall

IPC分类号： H04W4/00 ,  H04B1/00 ,  H04L5/00 ,  H04B1/59 ,  H04W72/12

CPC分类号： H04B1/713 ,  H04B1/59 ,  H04L5/0007 ,  H04L5/006 ,  H04L27/2627 ,  H04L27/2657 ,  H04W72/042 ,  H04W72/0453 ,  H04W72/1205 ,  H04W88/08

摘要： Variable bandwidth assignment and frequency hopping are employed to make efficient use of radio resources. Variable bandwidth assignment is achieved by dynamically allocating different numbers of subcarriers to different mobile terminals depending on their instantaneous channel conditions. The frequency hopping patterns are determined “on-the-fly” based on the current bandwidth assignments. The bandwidth assignments and frequency hopping patterns are signaled to the mobile terminals in a scheduling grant.

摘要翻译： 采用可变带宽分配和跳频来有效利用无线电资源。 可变带宽分配通过根据其瞬时信道条件向不同移动终端动态分配不同数量的子载波来实现。 基于当前带宽分配来确定跳频模式“即时”。 带宽分配和跳频模式在调度许可中被发送给移动终端。

公开(公告)号：US09037174B2

公开(公告)日：2015-05-19

申请号：US13392941

申请日：2009-09-02

申请人： Chrysostomos Koutsimanis ,  Bo Hagerman ,  Per Skillermark

发明人： Chrysostomos Koutsimanis ,  Bo Hagerman ,  Per Skillermark

IPC分类号： H04W40/00 ,  H04B7/00 ,  H04W4/08 ,  H04B7/02 ,  H04W8/18 ,  H04W88/08

CPC分类号： H04W4/08 ,  H04B7/024 ,  H04W8/186 ,  H04W88/08

摘要： The present invention discloses a method in a network node (310, 610) for improving radio network characteristics in a wireless communications network (300, 600) comprising M cells. The method forms at least a first subgroup SC of cells comprising K cells, where K

摘要翻译： 本发明公开了一种网络节点（310,610）中用于改善包括M个小区的无线通信网络（300,600）中的无线电网络特性的方法。 该方法形成至少包括K个小区的小区的第一子组SC，其中K = M，用于小区之间的协调传输和/或接收。 网络节点（310,610）确定与网络中的第一小区Ci和第二小区Cj相关联的至少一个权重aij（410,730）。 权重a表示取决于小区Ci和Cj的无线电网络特性。 网络节点（310,610）通过从M个小区中选择至多K个小区来形成（470）小区SC，以使得子组SC中的每个小区Ci和Cj的权重aij的函数为 大致最大化。 网络节点（310,610）向子组SC中的每个小区Ck发送（480）消息，将所述小区Ck与所述子组SC相关联。

公开(公告)号：US08699422B2

公开(公告)日：2014-04-15

申请号：US12088209

申请日：2006-09-25

申请人： Per Skillermark ,  Anders Furuskar

发明人： Per Skillermark ,  Anders Furuskar

IPC分类号： H04W4/00 ,  H04J3/00

CPC分类号： H04W16/10 ,  H04W72/04

摘要： An estimate of a cost of allocating radio resources available for allocation to a at least one radio link within a cell is generated in dependency of which radio resources have been used within the cell at previous times. This cost estimate can be compared to a quality gain of allocating the radio resources to the radio link, and an allocation decision can be made in dependency of the comparison result.

摘要翻译： 根据先前在单元内已经使用哪个无线电资源，生成可用于分配给小区内的至少一个无线电链路的无线资源的成本的估计。 可以将该成本估计与将无线电资源分配给无线电链路的质量增益进行比较，并且可以根据比较结果进行分配决定。

公开(公告)号：US20110045838A1

公开(公告)日：2011-02-24

申请号：US12159452

申请日：2005-12-27

申请人： Anders Furuskär ,  Per Skillermark

发明人： Anders Furuskär ,  Per Skillermark

IPC分类号： H04W72/12

CPC分类号： H04W72/1231

摘要： The present invention relates to a scheduler selector and a method for improving network quality by controlling intercellular interference of a multi-cellular mobile radio communication network. The radio communication traffic is controlled by a user traffic scheduler principle. The network quality is improved by selecting another scheduling principle among a number of pre-defined and selectable scheduling principles than the scheduling principle working for the moment in a cell in said network. Said selection being initiated as a result of an intracellular Quality data processing wherein the network quality is determined to be possible to improve.

摘要翻译： 本发明涉及一种通过控制多蜂窝移动无线电通信网络的小区间干扰来提高网络质量的调度器选择器和方法。 无线电通信业务由用户业务调度器原理控制。 通过选择多个预定义和可选择的调度原理中的另一个调度原理来改善网络质量，而不是在所述网络中的小区中工作的调度原理。 所述选择是作为细胞内质量数据处理的结果发起的，其中网络质量被确定为可能改善。