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    • 51. 发明授权
    • Cell searching system and method
    • 小区搜索系统和方法
    • US08009661B2
    • 2011-08-30
    • US11852606
    • 2007-09-10
    • Bengt LindoffRobert BaldemairErik DahlmanStefan Parkvall
    • Bengt LindoffRobert BaldemairErik DahlmanStefan Parkvall
    • H04W4/00H04W72/00H04J3/06
    • H04L27/2655H04J11/0069H04L27/2602H04L27/2675
    • For wireless networks that transmit synchronization signals allowing user equipment to synchronize to cells within the network and transmit reference signals allowing user equipment to determine cell identities, a method and apparatus taught herein advantageously link the synchronization signal sequences to the reference signal sequences according to a defined mapping. The linking simplifies the cell search process by allowing user equipment to determine cell identities based on mapping detected synchronization signal sequences to the corresponding reference signal or to the corresponding subset of reference signals in embodiments where there are more reference signal sequences than synchronization signal sequences. In at least one embodiment, the network is a 3G LTE network and at least the Primary Synchronization Signal (P-SyS) sequences are linked to the Downlink (DL) reference symbol sequences according to a defined mapping, thereby allowing to user equipment to determine cell identities from detected P-SyS sequences.
    • 对于发送允许用户设备与网络中的小区同步并发送允许用户设备确定小区标识的参考信号的同步信号的无线网络,本文教导的方法和装置有利地将同步信号序列链接到参考信号序列, 映射。 该链接通过允许用户设备基于将检测到的同步信号序列映射到对应的参考信号或者在具有比同步信号序列更多的参考信号序列的参考信号序列的相应子集中来确定小区标识来简化小区搜索过程。 在至少一个实施例中,网络是3G LTE网络,并且至少主同步信号(P-SyS)序列根据定义的映射链接到下行链路(DL)参考符号序列,从而允许用户设备确定 来自检测到的P-SyS序列的细胞鉴定。
    • 53. 发明申请
    • Signal Processing Device and Method
    • 信号处理装置及方法
    • US20110136455A1
    • 2011-06-09
    • US13001758
    • 2009-06-15
    • Lars SundstromBengt LindoffSven MattissonFilip OredssonTony PeterssonImad ud Din
    • Lars SundstromBengt LindoffSven MattissonFilip OredssonTony PeterssonImad ud Din
    • H04B1/26
    • H04B1/28H04B1/406
    • A processing device (40) for processing an analog complex input signal generated by downconversion of an aggregated-spectrum radio-frequency signal in a radio-receiver (10), wherein the complex input signal comprises a plurality of sub bands (S1-S4) scattered across a total frequency band (4) of the complex input signal. The processing device (40) comprises a plurality of processing paths (P1-PN). wherein each processing path (P1-PN) is adapted to process an associated sub band (S1-S4). Each processing path comprises a complex mixer (CM1-CMN) adapted to frequency translate the complex input signal, and an analog channel-selection filter (CSF1-CSFN) arranged to filter an output signal of the complex mixer (CM1-CMN) and pass the frequency translated associated sub band (S1-S4). A control unit (60) is adapted to receive control data indicating frequency locations of the sub bands (S1-S4) and, for each processing path (P1-PN). control the local oscillator signal of the complex mixer (CM1-CMN) of the processing path (P1-PN) based on the frequency location of the associated sub band (S1-S4) and the passband of the channel-selection filter (CSF1-CSFN) of the processing path (P1-PN), such that the frequency-translated associated sub band (S1-S4) appears within a passband of the channel-selection filter (CSF1-CSFN) of the processing path (P1-PN). The distortion monitored in the unused paths may be used to improve the performance of the used paths.
    • 一种处理装置(40),用于处理通过在无线电接收机(10)中对聚合频谱射频信号进行下变频而产生的模拟复合输入信号,其中所述复合输入信号包括多个子带(S1-S4) 分散在复合输入信号的总频带(4)上。 处理装置(40)包括多个处理路径(P1-PN),其中每个处理路径(P1-PN)适于处理相关子带(S1-S4)。 每个处理路径包括适于对复数输入信号进行频率转换的复合混频器(CM1-CMN),和布置成对复合混频器(CM1-CMN)的输出信号进行滤波并通过的模拟通道选择滤波器(CSF1-CSFN) 频率相关子带(S1-S4)。 控制单元(60)适于接收指示子频带的频率位置的控制数据(S1-S4),并且对于每个处理路径(P1-PN),控制复合混频器(CM1-CMN)的本地振荡器信号, 基于相关子带(S1-S4)的频率位置和处理路径(P1-PN)的信道选择滤波器(CSF1-CSFN)的通带的处理路径(P1-PN),使得 经频率转换的相关子带(S1-S4)出现在处理路径(P1-PN)的信道选择滤波器(CSF1-CSFN)的通带内。 在未使用的路径中监视的失真可用于改善所使用路径的性能。
    • 54. 发明申请
    • DRX FUNCTIONALITY IN MULTI-CARRIER WIRELESS NETWORKS
    • 多载波无线网络中的DRX功能
    • US20110128925A1
    • 2011-06-02
    • US12934207
    • 2008-09-03
    • Bengt LindoffStefan ParkvallErik Dahlman
    • Bengt LindoffStefan ParkvallErik Dahlman
    • H04W40/00H04W72/04
    • H04W52/0216H04W76/28Y02D70/1262Y02D70/1264Y02D70/24Y02D70/25
    • Mechanisms to provide independent DRX (discontinuous reception) functionalities for individual carriers of a multi-carrier wireless network (200) are described. DRX is a higher layer functionality indicating which TTIs (transmission time intervals) a user equipment (220) needs to read for control signals. Operating in the DRX cycle allows the user equipment (220) to reduce battery consumption. A connection is established between a base station (210) and the user equipment (220) over a plurality of carriers, where for each carrier, an independent DRX cycle is established. The plurality of carriers include anchor carriers which can carry commands from the base station (210). The anchor carriers have shorter DRX cycles than the non-anchor carriers. When a large amount of download data is to be transferred, the DRX cycles of multiple carriers are overridden and used for transfer to achieve fast download rates. The override commands are sent from the base station (210) to the user equipment (220) prior to the transfer.
    • 描述了为多载波无线网络(200)的各个载波提供独立的DRX(间歇接收)功能的机制。 DRX是指示用户设备(220)为控制信号需要读取哪些TTI(传输时间间隔)的较高层功能。 在DRX周期中操作允许用户设备(220)减少电池消耗。 在多个载波上在基站(210)和用户设备(220)之间建立连接,其中对于每个载波,建立独立的DRX周期。 多个载波包括可承载来自基站(210)的命令的锚载波。 锚载波具有比非锚载波更短的DRX周期。 当要传送大量的下载数据时,多个载波的DRX周期被覆盖并用于传输以实现快速下载速率。 覆盖命令在传输之前从基站(210)发送到用户设备(220)。
    • 56. 发明申请
    • Methods, Devices and Systems for Processing a Signal in the Presence of Narrowband Interference
    • 用于处理窄带干扰信号的方法,装置和系统
    • US20110085629A1
    • 2011-04-14
    • US12866431
    • 2009-02-05
    • Bengt LindoffAnders Rosenqvist
    • Bengt LindoffAnders Rosenqvist
    • H04B1/10
    • H04B1/71H04B2201/709709
    • A method is disclosed for processing a received signal in the presence of an interference of a first type within the bandwidth of a desired signal of the received signal. The method comprises filtering the received signal using at least a first filter having at least a first filter characteristic to produce a filtered signal wherein the interference of the first type is suppressed. Furthermore, the method comprises determining a desired data stream from the filtered signal, basing the determination at least on the first filter characteristic. A method is also disclosed for processing a signal where the method comprises receiving an indication of whether interference of a first type is present in a frequency interval within the bandwidth of the signal, filtering the signal using at least a first filter having at least a first filter characteristic to produce a filtered signal wherein the filtered signal is suppressed in the frequency interval; and transmitting the filtered signal. Corresponding devices, systems and computer program products are also disclosed.
    • 公开了一种在存在接收信号的期望信号的带宽内的第一类型的干扰的情况下处理接收信号的方法。 该方法包括使用至少具有第一滤波器特性的至少第一滤波器对接收信号进行滤波,以产生滤波信号,其中第一类型的干扰被抑制。 此外,该方法包括根据滤波信号确定期望的数据流,基于至少基于第一滤波器特性的确定。 还公开了一种用于处理信号的方法,其中该方法包括接收在信号的带宽内的频率间隔中存在第一类型的干扰的指示,使用至少第一滤波器对信号进行滤波,该第一滤波器至少具有第一 滤波器特性以产生经滤波的信号,其中滤波信号在频率间隔中被抑制; 并发送滤波后的信号。 还公开了相应的设备,系统和计算机程序产品。
    • 60. 发明授权
    • Methods and devices for adjustment of transmission parameters
    • 用于调整传输参数的方法和装置
    • US07885608B2
    • 2011-02-08
    • US11722237
    • 2005-12-19
    • Johan NilssonBengt Lindoff
    • Johan NilssonBengt Lindoff
    • H04B1/00H04B7/00
    • H04W52/26H04B7/0628H04B7/0634H04B2201/709727H04L1/0006H04L1/0009H04L1/0025H04L1/0026H04L1/1671H04W52/08H04W52/10H04W52/12H04W52/262H04W52/286H04W52/32H04W52/58
    • Methods and devices in a wireless communication system are provided, in which a first portion and a second portion of signals are transmitted on a physical channel to a first transceiver from a second transceiver. A method for controlling transmission parameters in the wireless communication system comprises the steps of: transmitting an indication indicating that the first and the second receiver processing algorithms are used in the first transceiver to process the first and second portions, respectively, of signals received on the physical channel; receiving the indication at the second transceiver; and adjusting, at the second transceiver in response to the indication, a transmission parameter for at least one of the first and second portions of signals to be transmitted on the physical channel to the first transceiver. The indication could be transmitted from the first transceiver, or it could be determined through evaluations carried out at the second transceiver.
    • 提供了一种在无线通信系统中的方法和设备,其中信号的第一部分和第二部分在物理信道上从第二收发器发送到第一收发器。 一种用于控制无线通信系统中的传输参数的方法,包括以下步骤:发送指示在第一收发信机中使用第一和第二接收机处理算法的指示,分别处理在第一和第二收发信机上接收的信号的第一和第二部分 物理通道; 在所述第二收发器处接收所述指示; 以及响应于所述指示在所述第二收发器处调整要在所述物理信道上发送到所述第一收发器的信号的所述第一和第二部分信号中的至少一个的传输参数。 该指示可以从第一收发器发送,或者可以通过在第二收发器处执行的评估来确定。