Method and apparatus for mitigating pilot pollution in a wireless network
    72.
    发明授权
    Method and apparatus for mitigating pilot pollution in a wireless network 有权
    用于减轻无线网络中导频污染的方法和装置

    公开(公告)号:US08897269B2

    公开(公告)日:2014-11-25

    申请号:US12359992

    申请日:2009-01-26

    摘要: Techniques for mitigating pilot pollution in a wireless network are described. In an aspect, pilot pollution may be mitigated by reducing density and/or transmit power of common pilots whenever possible. A cell may send a common pilot at a first density and a first transmit power level during a first time period and may send the common pilot at a second density and a second transmit power level during a second time period. The second density may be lower than the first density and/or the second transmit power level may be lower than the first transmit power level. Lower density may be achieved by sending the common pilot less frequently, on fewer subcarriers, and/or from fewer antennas. The cell may determine whether to reduce the density and/or transmit power of the common pilot based on network loading, SINRs of terminals, etc. In another aspect, pilot pollution may be mitigated by performing pilot cancellation at a terminal.

    摘要翻译: 描述了减轻无线网络中导频污染的技术。 在一方面,可能通过尽可能减少公共飞行员的密度和/或发射功率来减轻飞行员污染。 小区可以在第一时间段期间以第一密度和第一发射功率电平发送公共导频,并且可以在第二时间段期间以第二密度和第二发射功率电平发送公共导频。 第二密度可以低于第一密度,和/或第二发射功率电平可能低于第一发射功率电平。 较低的密度可以通过在较少的子载波上和/或从更少的天线较少频率地发送公共导频来实现。 小区可以基于网络负载,终端的SINR等来确定是否降低公共导频的密度和/或发射功率。另一方面,可以通过在终端执行导频消除来减轻导频污染。

    Blank subframe uplink design
    74.
    发明授权
    Blank subframe uplink design 有权
    空白子帧上行设计

    公开(公告)号:US08879461B2

    公开(公告)日:2014-11-04

    申请号:US12626236

    申请日:2009-11-25

    摘要: Blank subframe link design uses reduced bandwidth either explicit or derived for Closed Subscriber Group (CSG) cell interference mitigation, enabling a non-allowed User Equipment (UE) to co-exist with CSG cells on the same carrier. One could specify UL blank subframes to orthogonalize non-allowed UE and allowed UE transmissions on UL either via explicit UL blank subframe definition or derived from DL blank subframe definition. Scheduling can orthogonalize data transmissions. A femto cell temporarily reducing uplink bandwidth can mitigate uplink control channel residual interference from a non-allowed UE. A relay configures RACH occasion to coincide with non-blank UL subframes as much as possible. UE knowledge of RACH occasion is sufficient to start RACH and hand over procedure. RACH occasions with 10 ms periodicity are supported by assigning all odd/even uplink HARQ interlaces to relay. RACH occasions with 20 ms periodicity are supported by assigning any of the 1/4 UL HARQ interlaces to relay.

    摘要翻译: 空白子帧链路设计使用明确的或针对封闭用户组(CSG)小区干扰减轻的减少的带宽,使得不允许的用户设备(UE)与同一载波上的CSG小区共存。 可以指定UL空白子帧,以通过显式UL空白子帧定义或从DL空白子帧定义导出在UL上正确化非允许UE和允许的UE传输。 调度可以正交化数据传输。 暂时减少上行链路带宽的毫微微小区可以减轻来自不允许的UE的上行链路控制信道残留干扰。 继电器尽可能地配置RACH时机以与非空白UL子帧重合。 UE对RACH场合的了解足以启动RACH和移交程序。 通过将所有奇/偶上行HARQ交织分配给中继来支持具有10ms周期性的RACH场合。 通过将任何1/4 UL HARQ交织分配给中继,支持具有20ms周期的RACH场合。

    Dynamic selection of subframe formats in a wireless network
    75.
    发明授权
    Dynamic selection of subframe formats in a wireless network 有权
    无线网络中子帧格式的动态选择

    公开(公告)号:US08855062B2

    公开(公告)日:2014-10-07

    申请号:US12786972

    申请日:2010-05-25

    CPC分类号: H04W99/00 H04W28/18 H04W88/08

    摘要: Techniques for dynamically selecting subframe formats in a wireless network are described. In an aspect, a base station may dynamically switch between different subframe formats to support communication for different types of user equipments (UEs). In one design, the base station may declare a set of subframes as multicast/broadcast single frequency network (MBSFN) subframes for first/legacy UEs. The base station may send signaling conveying the set of subframes as MBSFN subframes to the legacy UEs. The base station may dynamically select the formats of the set of subframes for second/new UEs, e.g., on a per subframe basis. The format of each subframe may be selected from a plurality of formats, which may include at least one regular subframe format, at least one MBSFN subframe format, and/or at least one blank subframe format. The base station may send transmissions in the set of subframes based on the selected formats.

    摘要翻译: 描述了在无线网络中动态选择子帧格式的技术。 一方面,基站可以动态地在不同子帧格式之间切换以支持针对不同类型的用户设备(UE)的通信。 在一种设计中,基站可以将一组子帧声明为用于第一/旧式UE的多播/广播单频网络(MBSFN)子帧。 基站可以向传统UE发送传送该组子帧作为MBSFN子帧的信令。 基站可以例如在每个子帧的基础上动态地选择第二/新UE的子帧集合的格式。 每个子帧的格式可以从可以包括至少一个常规子帧格式,至少一个MBSFN子帧格式和/或至少一个空白子帧格式的多种格式中选择。 基站可以基于所选择的格式在该子帧集合中发送传输。

    Method and apparatus that facilitates operating a relay via a multimedia broadcast single frequency network based backhaul link
    77.
    发明授权
    Method and apparatus that facilitates operating a relay via a multimedia broadcast single frequency network based backhaul link 有权
    有助于通过多媒体广播基于单频网络的回程链路操作中继的方法和装置

    公开(公告)号:US08767684B2

    公开(公告)日:2014-07-01

    申请号:US12787605

    申请日:2010-05-26

    IPC分类号: H04J3/00

    摘要: Aspects are disclosed for operating a relay via an MBSFN-based backhaul link. Control resources are allocated, which include a first set of control resources and a second set of control resources. For some embodiments, a portion of the first set of control resources is concatenated with a portion of the second set of control resources to form a concatenation of resources whereas, in other embodiments, an indication scheme is implemented to provide an indication of a first or second allocation size respectively associated with the first and second set of control resources. At least one control signal is then transmitted which includes at least one of the concatenation or the indication. Other disclosed embodiments are directed towards configuring a user equipment to decode a control signal generated according to the aspects disclosed herein.

    摘要翻译: 公开了通过基于MBSFN的回程链路操作中继的方面。 分配控制资源,其包括第一组控制资源和第二组控制资源。 对于一些实施例,第一组控制资源的一部分与第二组控制资源的一部分连接以形成资源的级联,而在其他实施例中,实现指示方案以提供第一或第 第二分配大小分别与第一和第二组控制资源相关联。 然后传输至少一个控制信号,其包括级联或指示中的至少一个。 其他公开的实施例涉及配置用户设备来解码根据本文公开的方面生成的控制信号。

    Systems and methods for enhancing uplink coverage in interference scenerios
    78.
    发明授权
    Systems and methods for enhancing uplink coverage in interference scenerios 有权
    用于增强干扰场景上行链路覆盖的系统和方法

    公开(公告)号:US08761097B2

    公开(公告)日:2014-06-24

    申请号:US13110280

    申请日:2011-05-18

    IPC分类号: H04W28/18

    摘要: A method and apparatus are for communication in a wireless network in which a User Equipment (UE) associated with a first evolved Node B (eNB) experiences interference from a second eNB. The method includes negotiating by the first eNB of the wireless network with a second eNB of the wireless network for a partitioning of subband resources on an uplink. A first subset of subband resources is assigned to the first eNB, and a second subset of subband resources is assigned to the second eNB. A method and apparatus are for communication in a wireless network. The method includes decoding a downlink control channel received during a protected downlink subframe to determine an uplink subframe n containing a protected subband for uplink transmission. The method also includes transmitting data during the uplink subframe n on the protected subband.

    摘要翻译: 一种在无线网络中进行通信的方法和装置,其中与第一演进节点B(eNB)相关联的用户设备(UE)经历来自第二eNB的干扰。 该方法包括无线网络的第一eNB与无线网络的第二eNB进行协商,以便在上行链路上划分子带资源。 子带资源的第一子集被分配给第一eNB,并且子带资源的第二子集被分配给第二eNB。 一种用于在无线网络中进行通信的方法和装置。 该方法包括解码在受保护的下行链路子帧期间接收到的下行链路控制信道,以确定包含用于上行链路传输的受保护子带的上行链路子帧n。 该方法还包括在受保护子带上的上行链路子帧n期间发送数据。

    Subframe staggering for relay communication
    79.
    发明授权
    Subframe staggering for relay communication 有权
    子帧交错用于中继通信

    公开(公告)号:US08705419B2

    公开(公告)日:2014-04-22

    申请号:US12899862

    申请日:2010-10-07

    摘要: Techniques for supporting relay communication with subframe staggering are described. For subframe staggering, subframes of different relays are staggered from one another, which can increase the number of potential backhaul subframes. In one design, a first relay determines its access subframes and backhaul subframes, which correspond to different non-overlapping subsets of the subframes of the first relay. The first relay communicates with at least one UE during the access subframes and communicates with a base station during the backhaul subframes. The subframes of the first relay are offset from the subframes of a second relay communicating with the base station. In one design, the access subframes of the first relay includes all subframes with either even or odd indices, which can support data transmission with HARQ. In one design, at least one access subframe corresponds to at least one reserved subframe having reduced transmit power from the base station.

    摘要翻译: 描述用于支持具有子帧交错的中继通信的技术。 对于子帧交错,不同继电器的子帧彼此交错,这可以增加潜在的回程子帧的数量。 在一种设计中,第一中继器确定其接入子帧和回程子帧,其对应于第一中继的子帧的不同非重叠子集。 第一中继器在访问子帧期间与至少一个UE通信,并且在回程子帧期间与基站进行通信。 第一中继器的子帧与与基站通信的第二中继器的子帧偏移。 在一种设计中,第一中继器的接入子帧包括具有偶数或奇数索引的所有子帧,这可以支持使用HARQ的数据传输。 在一种设计中,至少一个接入子帧对应于来自基站的具有降低的发射功率的至少一个保留的子帧。