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    • 3. 发明申请
    • Method, system and device for providing a robust wireless connection
    • 用于提供鲁棒无线连接的方法,系统和设备
    • US20090258639A1
    • 2009-10-15
    • US10583452
    • 2004-12-02
    • Johan NyströmPal FrengerErik DahlmanStefan Parkvall
    • Johan NyströmPal FrengerErik DahlmanStefan Parkvall
    • H04W40/00
    • H04W76/15H04B7/2606H04W76/14H04W88/04
    • A system and a method for wireless linking in a cellular communication system are disclosed such that a mobile station is maintained in simultaneous communication with at least a first node and a second node for access to the cellular communication system. Information going to and from the first node is not identical to the information going to and from the second node. In one embodiment the second node, or secondary access point is a relay node forwarding received information to and from the first node, or primary access point. In another embodiment the second node is another mobile station performing a direct mobile-to-mobile communication (MS-to-MS). In still an embodiment a first wireless link to the first node is for control information only. In still a further embodiment a second wireless link to the second node is only for communication of information from the mobile station or only for communication of information to the mobile station.
    • 公开了一种用于蜂窝通信系统中的无线链接的系统和方法,使得移动台与至少第一节点和第二节点保持同时通信以访问蜂窝通信系统。 进出第一个节点的信息与进入第二个节点的信息不同。 在一个实施例中,第二节点或辅助接入点是将接收的信息转发到第一节点或主接入点的中继节点。 在另一个实施例中,第二节点是执行直接移动到移动通信(MS到MS)的另一个移动站。 在另一实施例中,到第一节点的第一无线链路仅用于控制信息。 在又一个实施例中,到第二节点的第二无线链路仅用于来自移动台的信息的通信,或仅用于向移动台通信信息。
    • 4. 发明授权
    • Method and arrangement for cell ID collision detection
    • 小区ID碰撞检测的方法和布置
    • US08626213B2
    • 2014-01-07
    • US13060381
    • 2008-08-27
    • Pal FrengerFredrik Gunnarsson
    • Pal FrengerFredrik Gunnarsson
    • H04B7/00H04B15/00
    • H04L5/0082H04L5/0033H04L5/005H04L5/0073H04L5/0078H04W8/26H04W16/12H04W24/02H04W72/1289
    • The present invention relates to methods, a communication network node and a user equipment for detecting collision of physical cell identities in a communication network system comprising radio base stations each serving at least one cell through which user equipments are moving. Reference signals comprising reference symbols corresponding to a physical cell identity are sent from said radio base stations to said user equipments over a radio interface. Transmission gaps of reference symbols are inserted in the reference signal in order to perform a physical cell identity collision test. The user equipments are arranged to detect if any other radio base station is sending reference symbols corresponding to the same physical cell identity during the transmission gaps. Thereby a physical cell identity collision is detected. The reference symbol transmission gaps are fractionally distributed within said reference signal such that at least some of said reference symbols are unaffected by said reference symbol transmission gaps.
    • 本发明涉及用于检测通信网络系统中的物理小区标识的冲突的方法,通信网络节点和用户设备,所述通信网络系统包括各自为用户设备正在移动的至少一个小区服务的无线基站。 包括对应于物理小区标识的参考符号的参考信号通过无线电接口从所述无线电基站发送到所述用户设备。 参考符号的传输间隙插入到参考信号中,以便执行物理单元标识冲突测试。 用户设备被布置为检测在传输间隙期间是否有任何其他无线电基站发送对应于相同物理小区标识的参考符号。 从而检测到物理小区标识冲突。 参考符号传输间隙被分数分布在所述参考信号中,使得所述参考符号中的至少一些不受所述参考符号传输间隙的影响。
    • 5. 发明授权
    • Relay station and method for enabling reliable digital communications between two nodes in a wireless relay based network
    • 用于在基于无线中继的网络中的两个节点之间实现可靠的数字通信的中继站和方法
    • US08125938B2
    • 2012-02-28
    • US10596619
    • 2003-12-19
    • Johan NystromPal Frenger
    • Johan NystromPal Frenger
    • H04B7/14
    • H03M13/3905H03M13/45H04B7/155H04B7/2606H04L1/0041H04L1/0045H04L1/0055H04L1/0082H04L1/18H04L1/1845H04L2001/0097H04W16/26
    • A relay station (606, 806a, 806b, 906a, 906b, 1006 and 1106) and a method (700) are described herein that enables reliable digital communications to occur between two nodes in a wireless relay based network (600, 800, 900, 1000 and 1100). The wireless relay based network includes a first node (602, 802, 902, 1002 and 1102) that transmits information in coded/modulated digital communications to a second node (604, 804, 904, 1004 and 1104) via one or more relay stations. And, each relay station is capable of: (1) receiving (702) a coded/modulated digital communication from the first node; (2) computing (704) a plurality of reliability values for a plurality of information symbols or coded symbols in the received coded/modulated digital communication; and (3) transmitting (706) a coded/modulated digital communication that has the computed reliability values embedded therein to the second node.
    • 本文描述了一种中继站(606,806a,806b,906a,906b,1006和1106)以及方法(700),其使得能够在基于无线中继的网络中的两个节点之间进行可靠的数字通信(600,800,900, 1000和1100)。 基于无线中继的网络包括经编码/调制数字通信中的信息经由一个或多个中继站(604,804,904,1004和1104)向第二节点(604,804,904,1004和1104)发送信息的第一节点(602,802,902,1002和1102) 。 并且,每个中继站能够:(1)从第一节点接收(702)编码/调制的数字通信; (2)在接收到的编码/调制数字通信中对多个信息符号或编码符号计算(704)多个可靠性值; 和(3)将嵌入其中的计算的可靠性值的编码/调制数字通信发送(706)到第二节点。
    • 6. 发明申请
    • TRANSCEIVER AND A REPEATER
    • 收发器和重复器
    • US20120003926A1
    • 2012-01-05
    • US13256782
    • 2009-04-29
    • Mikael ColdreyPal FrengerPatrik Persson
    • Mikael ColdreyPal FrengerPatrik Persson
    • H04B7/15H04W24/00
    • H04B7/15557H04B7/0632H04B7/15592
    • The invention discloses a transceiver (210, 215; 305, 310, 320, 330) for use in a cellular communications system (200, 300), arranged to communicate with at least one other transceiver in the system by means of technology for Multiple Input Multiple Output, MIMO. The transceiver is also arranged to control the function of a repeater (206, 207, 208, 209; 340) which is arranged to forward communication between the transceiver and said at least one other transceiver, said control being carried out as a result of measured performance parameters of the communication between the transceiver and said at least one other transceiver. In one embodiment, the function in the repeater (206, 207, 208, 209; 340) which the transceiver is arranged to control comprises activation and deactivation of the repeater.
    • 本发明公开了一种在蜂窝通信系统(200,300)中使用的收发器(210,215; 305,310,320,330),其被布置成通过用于多输入的技术与系统中的至少一个其他收发器通信 多输出,MIMO。 收发器还被布置成控制中继器(206,207,208,209; 340)的功能,其被布置成转发收发器与所述至少一个其他收发器之间的通信,所述控制是作为测量结果执行的 收发器与所述至少一个其他收发器之间的通信的性能参数。 在一个实施例中,收发器被布置为控制的中继器(206,207,208,209; 340)中的功能包括中继器的激活和去激活。
    • 8. 发明授权
    • Frequency domain echo canceller
    • 频域回波消除器
    • US07672447B1
    • 2010-03-02
    • US09584796
    • 2000-06-01
    • Fredrik LindqvistAntoni FertnerPal Frenger
    • Fredrik LindqvistAntoni FertnerPal Frenger
    • H04M9/08
    • H04B3/23
    • An echo canceller reduces an echo signal produced when the transmitted signal leaks back into the receiver via a hybrid. The echo canceller estimates the echo signal from the transmitted signal, and then subtracting the estimated echo signal from the received signal. In practice, the echo path channel in a DMT-modem is much longer than the cyclic prefix, and therefore, the received echo signal will be subjected to both ISI (inter-symbol-interference) and ICI (inter-carrier-interference). A traditional echo canceller, designed for a xDSL-modem, uses either a time domain adaptive FIR-filter or a combined echo canceller implemented in both time and frequency domain. A matrix-based adaptive echo canceller is implemented in the frequency domain. Various example embodiments are disclosed.
    • 回波消除器减少当发送的信号通过混合器泄漏回接收器时产生的回波信号。 回波消除器估计来自发射信号的回波信号,然后从接收信号中减去估计的回波信号。 实际上,DMT调制解调器中的回波路径信道比循环前缀长得多,因此接收到的回波信号将受到ISI(符号间干扰)和ICI(载波间干扰)两者的影响。 为xDSL调制解调器设计的传统回声消除器采用时域自适应FIR滤波器或时域和频域实现的组合回波消除器。 在频域中实现基于矩阵的自适应回波消除器。 公开了各种示例性实施例。