Method and Apparatus for Sending and Receiving a Low-Complexity Transmission in a Wireless Communication System
    51.
    发明申请
    Method and Apparatus for Sending and Receiving a Low-Complexity Transmission in a Wireless Communication System 有权
    用于在无线通信系统中发送和接收低复杂度传输的方法和装置

    公开(公告)号:US20110194510A1

    公开(公告)日:2011-08-11

    申请号:US13022328

    申请日:2011-02-07

    IPC分类号: H04W72/04

    摘要: Techniques for supporting data transmission based on a low-complexity transmission scheme are described. In one design, a first user equipment (UE) generates a first transmission for a single subcarrier assigned to the first UE. The first UE sends the first transmission on the single subcarrier concurrently with a SC-FDMA transmission sent on multiple subcarriers by a second UE. In one design, the first UE generates a continuous sinusoidal signal at a frequency corresponding to the single subcarrier. The first UE modulates the continuous sinusoidal signal with data symbols and reference symbols. In one design, the first transmission includes a cyclic prefix followed by a useful portion in each symbol period and has phase discontinuity at symbol boundary. A base station processes a received signal to recover the first transmission sent by the first UE and the SC-FDMA transmission sent by the second UE.

    摘要翻译: 描述了用于支持基于低复杂度传输方案的数据传输的技术。 在一种设计中,第一用户设备(UE)为分配给第一UE的单个子载波生成第一传输。 第一UE在单个子载波上与第二UE在多个子载波上发送的SC-FDMA传输同时发送第一传输。 在一种设计中,第一UE以对应于单个子载波的频率产生连续的正弦信号。 第一个UE用数据符号和参考符号调制连续的正弦信号。 在一种设计中,第一传输包括循环前缀,后跟每个符号周期中的有用部分,并且在符号边界处具有相位不连续性。 基站处理接收到的信号以恢复由第一UE发送的第一传输和由第二UE发送的SC-FDMA传输。

    METHOD AND APPARATUS THAT FACILITATES A TIMING ALIGNMENT IN A MULTICARRIER SYSTEM
    52.
    发明申请
    METHOD AND APPARATUS THAT FACILITATES A TIMING ALIGNMENT IN A MULTICARRIER SYSTEM 有权
    在多媒体系统中使时序对齐的方法和装置

    公开(公告)号:US20110158116A1

    公开(公告)日:2011-06-30

    申请号:US12818064

    申请日:2010-06-17

    IPC分类号: H04W56/00 H04W72/04 H04L12/26

    CPC分类号: H04W56/0045

    摘要: Aspects are disclosed for facilitating a timing alignment in a multicarrier system. In one aspect, at least one downlink timing associated with at least one downlink carrier is determined, and an uplink timing associated with an uplink group of carriers is ascertained based on at least one downlink timing and a timing offset associated with the uplink group of carriers. Each of the uplink group of carriers is then transmitted within a threshold value of the uplink timing. In another aspect, a downlink communication is transmitted to a wireless terminal via at least one downlink carrier. This embodiment further includes assigning a timing offset to an uplink group of carriers, and providing the timing offset to the wireless terminal via the at least one downlink carrier. An uplink communication is then received via the uplink group of carriers according to the timing offset.

    摘要翻译: 公开了用于促进多载波系统中的定时对准的方面。 在一个方面,确定与至少一个下行链路载波相关联的至少一个下行链路定时,并且基于与上行链路群组相关联的至少一个下行链路定时和定时偏移来确定与载波的上行链路组相关联的上行链路定时 。 然后在上行链路定时的阈值内发送每个上行链路载波组。 另一方面,经由至少一个下行链路载波将下行链路通信发送到无线终端。 该实施例还包括向上行链路群组分配定时偏移,以及经由至少一个下行链路载波向无线终端提供定时偏移。 然后,根据定时偏移,经由上行链路群组接收上行链路通信。

    METHOD AND APPARATUS FOR MUTIPLEXING REFERENCE SIGNAL AND DATA IN A WIRELESS COMMUNICATION SYSTEM
    53.
    发明申请
    METHOD AND APPARATUS FOR MUTIPLEXING REFERENCE SIGNAL AND DATA IN A WIRELESS COMMUNICATION SYSTEM 有权
    用于在无线通信系统中复用参考信号和数据的方法和装置

    公开(公告)号:US20110128909A1

    公开(公告)日:2011-06-02

    申请号:US12913684

    申请日:2010-10-27

    IPC分类号: H04W4/00

    摘要: Techniques for efficiently multiplexing a reference signal and data on different sets of subcarriers in the same symbol period are described. In one design, a user equipment (UE) performs a discrete Fourier transform (DFT) on a set of modulation symbols for data to obtain data symbols. The UE also obtains reference symbols generated based on a reference signal sequence corresponding to a cyclic shift of a base sequence. The UE maps the reference symbols to a first set of subcarriers and maps the data symbols to a second set of subcarriers. The UE then generates a transmission symbol based on the mapped reference symbols and the mapped data symbols. The UE may also transmit reference signals and data (i) in multiple symbol periods of a slot or a subframe and/or (ii) from multiple antennas using frequency division multiplexing (FDM) or code division multiplexing (CDM).

    摘要翻译: 描述用于在相同符号周期中高效地多路复用参考信号和不同子载波集合上的数据的技术。 在一种设计中,用户设备(UE)对用于数据的一组调制符号执行离散付里叶变换(DFT)以获得数据符号。 UE还获得基于与基本序列的循环移位相对应的参考信号序列生成的参考符号。 UE将参考符号映射到第一组子载波,并将数据符号映射到第二组子载波。 然后,UE基于映射的参考符号和映射的数据符号来生成传输符号。 UE还可以使用频分复用(FDM)或码分多路复用(CDM)在多个天线的时隙或子帧的多个符号周期中和/或(ii))发送参考信号和数据(i)。

    TIMING ADJUSTMENT FOR SYNCHRONOUS OPERATION IN A WIRELESS NETWORK
    54.
    发明申请
    TIMING ADJUSTMENT FOR SYNCHRONOUS OPERATION IN A WIRELESS NETWORK 有权
    在无线网络中进行同步操作的时序调整

    公开(公告)号:US20100222068A1

    公开(公告)日:2010-09-02

    申请号:US12712755

    申请日:2010-02-25

    IPC分类号: H04W72/00

    CPC分类号: H04W56/0045 H04W56/0005

    摘要: Techniques for adjusting transmit timing of base stations and user equipments (UEs) in a wireless network are described. In one operating scenario, a femto base station communicates with a femto UE, and a macro base station communicates with a macro UE located within the coverage of the femto base station. In an aspect, the transmit timing of the femto base station may be delayed relative to the transmit timing of the macro base station, e.g., to time align downlink signals from the femto and macro base stations at the femto and macro UEs. In another aspect, the transmit timing of the femto UE may be advanced relative to the transmit timing of femto base station by an amount larger than twice the propagation delay between the femto UE and the femto base station, e.g., to time align uplink signals from the femto and macro UEs at the femto base station.

    摘要翻译: 描述了用于调整无线网络中的基站和用户设备(UE)的发送定时的技术。 在一个操作场景中,毫微微基站与毫微微UE通信,并且宏基站与位于毫微微基站的覆盖范围内的宏UE进行通信。 在一方面,毫微微基站的发送定时可以相对于宏基站的发送定时被延迟,例如,在毫微微和宏UE处对来自毫微微基站和宏基站的下行链路信号进行时间调整。 在另一方面,毫微微UE的发送定时可以相对于毫微微基站的发送定时超过毫微微UE与毫微微基站之间的传播延迟的两倍的量进步,例如,将来自 毫微微基站处的毫微微和宏UE。

    Downlink interference cancellation methods
    57.
    发明授权
    Downlink interference cancellation methods 有权
    下行干扰消除方法

    公开(公告)号:US08867999B2

    公开(公告)日:2014-10-21

    申请号:US12437362

    申请日:2009-05-07

    IPC分类号: H04B1/00

    CPC分类号: H04W72/082 H04W48/08

    摘要: A method to mitigate interference in a wireless system is provided. The method includes processing a set of radio network identifiers and limiting a number of hypotheses associated with the radio network identifiers in order to mitigate interference in a wireless network. In another aspect, the method includes processing a set of hypotheses and limiting the set of hypotheses by limiting a number of downlink grants to a common space, limiting the number of downlink grants to a number of instances, or limiting the number of grants to a physical downlink control channel (PDCCH) type. In yet another aspect, the method includes processing a downlink set and generating a target termination level for the downlink data set, the termination level associated with a Hybrid automatic repeat-request.

    摘要翻译: 提供了一种减轻无线系统干扰的方法。 该方法包括处理一组无线电网络标识符并限制与无线电网络标识符相关联的假设数量,以便减轻无线网络中的干扰。 在另一方面,该方法包括处理一组假设并通过将下行链路授权的数量限制到公共空间来限制假设集合,将下行链路授权的数量限制到多个实例,或将授权数量限制为 物理下行链路控制信道(PDCCH)类型。 在另一方面,该方法包括处理下行链路集合并为下行链路数据集生成与混合自动重传请求相关联的终止级别的目标终止级别。

    Method and apparatus that facilitates a timing alignment in a multicarrier system
    58.
    发明授权
    Method and apparatus that facilitates a timing alignment in a multicarrier system 有权
    促进多载波系统中定时对准的方法和装置

    公开(公告)号:US08634313B2

    公开(公告)日:2014-01-21

    申请号:US12818064

    申请日:2010-06-17

    IPC分类号: H04W56/00

    CPC分类号: H04W56/0045

    摘要: Aspects are disclosed for facilitating a timing alignment in a multicarrier system. In one aspect, at least one downlink timing associated with at least one downlink carrier is determined, and an uplink timing associated with an uplink group of carriers is ascertained based on at least one downlink timing and a timing offset associated with the uplink group of carriers. Each of the uplink group of carriers is then transmitted within a threshold value of the uplink timing. In another aspect, a downlink communication is transmitted to a wireless terminal via at least one downlink carrier. This embodiment further includes assigning a timing offset to an uplink group of carriers, and providing the timing offset to the wireless terminal via the at least one downlink carrier. An uplink communication is then received via the uplink group of carriers according to the timing offset.

    摘要翻译: 公开了用于促进多载波系统中的定时对准的方面。 在一个方面,确定与至少一个下行链路载波相关联的至少一个下行链路定时,并且基于与上行链路群组相关联的至少一个下行链路定时和定时偏移来确定与载波的上行链路组相关联的上行链路定时 。 然后在上行链路定时的阈值内发送每个上行链路载波组。 另一方面,经由至少一个下行链路载波将下行链路通信发送到无线终端。 该实施例还包括向上行链路群组分配定时偏移,以及经由至少一个下行链路载波向无线终端提供定时偏移。 然后,根据定时偏移,经由上行链路群组接收上行链路通信。

    METHOD AND APPARATUS FOR CONDUCTING MEASUREMENTS WHEN MULTIPLE CARRIERS ARE SUPPORTED
    60.
    发明申请
    METHOD AND APPARATUS FOR CONDUCTING MEASUREMENTS WHEN MULTIPLE CARRIERS ARE SUPPORTED 有权
    在支持多个运营商时进行测量的方法和装置

    公开(公告)号:US20110242999A1

    公开(公告)日:2011-10-06

    申请号:US12895665

    申请日:2010-09-30

    IPC分类号: H04W24/00

    摘要: Measurements are conducted on one or more carriers in a case where an access terminal supports reception on multiple carriers. Upon determining that an access terminal is capable of concurrently receiving on a given set of carriers, a measurement is conducted on one or more carriers of the set while receiving on or more other carriers of the set. Conversely, upon determining that an access terminal is not capable of concurrently receiving on a given set of carriers, a measurement is conducted on one or more carriers of the set while not receiving on or more other carriers of the set. In addition, data transfers to or from an access terminal on a carrier may be restricted (e.g., data transfers not scheduled or only low priority data transfers scheduled) during one or more subframes before or after the access terminal conducts a measurement on another carrier.

    摘要翻译: 在接入终端支持在多个载波上接收的情况下,对一个或多个载波进行测量。 在确定接入终端能够在给定的一组载波上同时接收时,对该组的一个或多个载波进行测量,同时在该组的多个其它载波上接收。 相反,在确定接入终端不能在给定的一组载波上同时接收时,对该组的一个或多个载波进行测量,而不接收该组的多个其它载波。 此外,在接入终端在另一个载波上进行测量之前或之后的一个或多个子帧期间,可能会限制(或者从载波上的接入终端)到数据传输或从载波上的接入终端的数据传输(例如,未调度的数据传输或仅调度低优先级数据传输)。