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    CARRIER SYNCHRONIZATION METHOD, CIRCUIT AND SYSTEM
    12.
    发明授权
    CARRIER SYNCHRONIZATION METHOD, CIRCUIT AND SYSTEM 有权
    载波同步方法和系统电路

    公开(公告)号：EP2717530B1

    公开(公告)日：2015-09-16

    申请号：EP12761273.7

    申请日：2012-05-09

    申请人： Huawei Technologies Co., Ltd.

    发明人： LIU, Lianfu ,  MA, Jun

    IPC分类号： H04L27/18 ,  H04L27/227 ,  H04L27/00

    CPC分类号： H04J3/06 ,  H04B7/2643 ,  H04L27/0014 ,  H04L27/2273 ,  H04L2027/0024 ,  H04L2027/0048

    摘要： Embodiments of the present invention provide a carrier synchronization method, circuit, and system, where the method includes: performing n times frequency multiplication on a received signal; performing narrowband filtering at least twice and rectangular wave shaping at least twice on the signal obtained after the n times frequency multiplication; and performing n times frequency division on the signal obtained after the filtering and shaping, to restore a carrier signal, where n is a positive integer greater than or equal to 4. The circuit includes: an n times frequency multiplication unit, configured to perform n times frequency multiplication on a received signal; a filtering and shaping unit, configured to perform narrowband filtering at least twice and rectangular wave shaping at least twice on the signal obtained after the n times frequency multiplication; and an n times frequency division unit, configured to perform n times frequency division on the signal obtained after the filtering and shaping, to restore a carrier signal, where n is a positive integer greater than or equal to 4. The system includes a demodulator and a carrier synchronization circuit. Compared with the prior art, in the embodiments of the present invention, carrier restoration transition time is reduced.

    METHOD AND APPARATUS FOR SOFT-CELL OPERATION INVOLVING LEGACY DEVICES
    13.
    发明公开
    METHOD AND APPARATUS FOR SOFT-CELL OPERATION INVOLVING LEGACY DEVICES 审中-公开
    VERFAHREN UND VORRICHTUNGFÜRSOFT-CELL-BETRIEB MIT ALTVORRICHTUNGEN

    公开(公告)号：EP2870707A1

    公开(公告)日：2015-05-13

    申请号：EP13728385.9

    申请日：2013-06-12

    申请人： Telefonaktiebolaget L M Ericsson (Publ)

    发明人： TILLMAN, Fredrik ,  LINDOFF, Bengt ,  BERGLJUNG, Christian ,  PARKVALL, Stefan

    IPC分类号： H04B7/26 ,  H04L5/00

    CPC分类号： H04B7/2643 ,  H04L5/001 ,  H04L5/0094 ,  H04L5/1469 ,  Y02D70/1262 ,  Y02D70/1264 ,  Y02D70/449

    摘要： The teachings herein provide a number of advantages, including but not limited to improving soft-cell operation in service scenarios involving legacy devices that do not directly support carrier aggregation—i.e., devices that can transmit or receive in only one frequency band at a time. By imposing a Time Division Duplex (TDD) arrangement across two carriers operating in different frequency bands, scheduled transmissions involving the legacy device are mutually exclusive as between the two carriers. Advantageously, the TDD arrangement is imposed across first and second carriers used in the macro- and low-power layers of a soft-cell, thus imposing TDD-based coordination of scheduled transmissions between those carriers irrespective of whether the individual carriers are configured as Frequency Division Duplex (FDD) or TDD carriers, or a mix thereof.

    摘要翻译： 本文的教导提供了许多优点，包括但不限于在不直接支持载波聚合的传统设备（即，一次只能在一个频带中发射或接收的设备）的业务场景中改进软小区操作。 通过在两个运营在不同频带的载波上实施时分双工（TDD）布置，涉及传统设备的调度传输在两个载波之间是相互排斥的。 有利地，TDD布置被施加在在软小区的宏功率层和低功率层中使用的第一和第二载波上，从而在这些载波之间强加基于TDD的协调调度的传输，而不管各个载波是否被配置为频率 分割双工（FDD）或TDD载波，或其混合。

    Duplex operation in a cellular communication system
    15.
    发明公开
    Duplex operation in a cellular communication system 审中-公开

    公开(公告)号：EP2827647A2

    公开(公告)日：2015-01-21

    申请号：EP14184548.7

    申请日：2006-08-18

    申请人： Sony Corporation

    发明人： Beale, Martin ,  Jones, Alan Edward

    IPC分类号： H04W48/10

    CPC分类号： H04L5/1438 ,  H04B7/2643 ,  H04L5/16 ,  H04W36/16 ,  H04W48/10 ,  H04W74/0833 ,  H04W76/10

    摘要： A cellular communication system comprises a first base station (205) serving at least a first user equipment (201) The base station (205) comprises functionality (701, 703, 704) for transmitting a base station duplex capability message to user equipments (201, 203) using a transmission format which is common to a plurality of duplex modes. The first user equipment (201) comprises a transceiver (801) which receives the base station duplex capability message. A RACH characteristics processor (805) determines at least one transmit characteristic for an access message in response to the base station duplex capability message and a RACH transmit controller (807) controls the transmission of an access message to the first base station (205) in response to the at least one transmit characteristic.

    CARRIER SYNCHRONIZATION METHOD, CIRCUIT AND SYSTEM
    17.
    发明公开
    CARRIER SYNCHRONIZATION METHOD, CIRCUIT AND SYSTEM 有权
    载波同步过程，切换和系统

    公开(公告)号：EP2717530A4

    公开(公告)日：2014-09-17

    申请号：EP12761273

    申请日：2012-05-09

    申请人： HUAWEI TECH CO LTD

    发明人： LIU LIANFU ,  MA JUN

    IPC分类号： H04L27/18 ,  H04L27/00 ,  H04L27/227

    CPC分类号： H04J3/06 ,  H04B7/2643 ,  H04L27/0014 ,  H04L27/2273 ,  H04L2027/0024 ,  H04L2027/0048

    摘要： Embodiments of the present invention provide a carrier synchronization method, circuit, and system, where the method includes: performing n times frequency multiplication on a received signal; performing narrowband filtering at least twice and rectangular wave shaping at least twice on the signal obtained after the n times frequency multiplication; and performing n times frequency division on the signal obtained after the filtering and shaping, to restore a carrier signal, where n is a positive integer greater than or equal to 4. The circuit includes: an n times frequency multiplication unit, configured to perform n times frequency multiplication on a received signal; a filtering and shaping unit, configured to perform narrowband filtering at least twice and rectangular wave shaping at least twice on the signal obtained after the n times frequency multiplication; and an n times frequency division unit, configured to perform n times frequency division on the signal obtained after the filtering and shaping, to restore a carrier signal, where n is a positive integer greater than or equal to 4. The system includes a demodulator and a carrier synchronization circuit. Compared with the prior art, in the embodiments of the present invention, carrier restoration transition time is reduced.

    摘要翻译： 本发明的实施例提供一种载波同步方法，电路和系统，其中该方法包括：对接收到的信号执行n次倍频; 执行窄带滤波至少两次，并在n次倍频后获得的信号进行至少两次矩形波整形; 对滤波和整形后得到的信号执行n次分频，以恢复载波信号，其中n为大于或等于4的正整数。该电路包括：n倍倍增单元，被配置为执行n 对接收信号进行倍频; 滤波和整形单元，被配置为执行至少两次的窄带滤波，并且在n次倍频之后获得的信号上进行至少两次矩形波整形; 以及n次分频单元，被配置为对滤波和整形后获得的信号执行n次分频，以恢复载波信号，其中n是大于或等于4的正整数。该系统包括解调器和 载波同步电路。 与现有技术相比，在本发明的实施例中，载波恢复转换时间减少。

    Duplex operation in a cellular communication system
    18.
    发明授权
    Duplex operation in a cellular communication system 有权
    在移动通信系统的双工操作

    公开(公告)号：EP2237621B1

    公开(公告)日：2014-07-09

    申请号：EP10164405.2

    申请日：2006-08-18

    申请人： Sony Corporation

    发明人： Beale, Martin ,  Jones, Alan Edward

    IPC分类号： H04W48/10

    CPC分类号： H04L5/1438 ,  H04B7/2643 ,  H04L5/16 ,  H04W36/16 ,  H04W48/10 ,  H04W74/0833 ,  H04W76/10

    摘要： A cellular communication system comprises a first base station (205) serving at least a first user equipment (201) The base station (205) comprises functionality (701, 703, 704) for transmitting a base station duplex capability message to user equipments (201, 203) using a transmission format which is common to a plurality of duplex modes. The first user equipment (201) comprises a transceiver (801) which receives the base station duplex capability message. A RACH characteristics processor (805) determines at least one transmit characteristic for an access message in response to the base station duplex capability message and a RACH transmit controller (807) controls the transmission of an access message to the first base station (205)in response to the at least one transmit characteristic.