Asynchronous time division duplex operation in a wireless network
    111.
    发明授权
    Asynchronous time division duplex operation in a wireless network 有权
    无线网络中的异步时分双工操作

    公开(公告)号:US09118468B2

    公开(公告)日:2015-08-25

    申请号:US12841292

    申请日:2010-07-22

    摘要: Techniques for supporting communication in an asynchronous TDD wireless network are described. In an aspect, downlink transmissions and uplink transmissions may be sent on different carriers in an asynchronous TDD wireless network to mitigate interference. In one design, a station (e.g., a base station or a UE) may send a first transmission on a first carrier in a first time period and may receive a second transmission on a second carrier in a second time period. The station may only transmit, or only receive, or neither in each time period. In one design, allocation of carriers for the downlink and uplink may be performed when strong interference is detected, e.g., by a base station or a UE. When strong interference is not detected, the first and second carriers may each be used for both the downlink and uplink.

    摘要翻译: 描述了用于支持异步TDD无线网络中的通信的技术。 在一方面,下行链路传输和上行链路传输可以在异步TDD无线网络中的不同载波上发送以减轻干扰。 在一种设计中,站(例如,基站或UE)可以在第一时间段内在第一载波上发送第一传输,并且可以在第二时间段内在第二载波上接收第二传输。 车站只能在每个时段内传送,也可以只接收。 在一种设计中,例如由基站或UE检测到强干扰时,可以执行用于下行链路和上行链路的载波的分配。 当没有检测到强干扰时,第一和第二载波可以分别用于下行链路和上行链路。

    Fallback operation for cross-carrier signaling in multi-carrier operation
    114.
    发明授权
    Fallback operation for cross-carrier signaling in multi-carrier operation 有权
    多载波操作中的跨载波信号的后备操作

    公开(公告)号:US09124406B2

    公开(公告)日:2015-09-01

    申请号:US12976818

    申请日:2010-12-22

    IPC分类号: H04W4/00 H04B7/216 H04L5/00

    CPC分类号: H04L5/0091 H04L5/0053

    摘要: Techniques for supporting fallback operation in a multi-carrier communication system are described. In one aspect, a UE may determine at least one first downlink control information (DCI) format to monitor on a first carrier. The UE may monitor for the first DCI format(s) on the first carrier to detect DCI sent to the UE. The UE may receive a reconfiguration message related to communication on a plurality of carriers by the UE with cross-carrier signaling, and may determine at least one second DCI format to monitor on the first carrier based on the reconfiguration message. The UE may monitor for the first DCI format(s) and the second DCI format(s) on the first carrier after receiving the reconfiguration message.

    摘要翻译: 描述了用于支持多载波通信系统中的回退操作的技术。 一方面,UE可以确定在第一载波上监视的至少一个第一下行链路控制信息(DCI)格式。 UE可以监视第一载波上的第一DCI格式,以检测发送给UE的DCI。 UE可以接收与具有跨载波信令的UE在多个载波上的通信相关的重配置消息,并且可以基于重新配置消息确定至少一个第二DCI格式来监视第一载波。 在接收到重新配置消息之后,UE可以监视第一载波上的第一DCI格式和第二DCI格式。

    Reference signal patterns
    115.
    发明授权
    Reference signal patterns 有权
    参考信号模式

    公开(公告)号:US08995465B2

    公开(公告)日:2015-03-31

    申请号:US13149766

    申请日:2011-05-31

    IPC分类号: H04J3/16 H04J3/00 H04L5/00

    CPC分类号: H04L5/0048

    摘要: Certain aspects of the present disclosure provide techniques for allocating resources for use in transmitting reference signals (RSs). According to certain aspects, a large set of enumerated possible CSI-RS resources (“CSI-RS patterns”) may be defined and a base station may select a CSI-RS pattern from a subset of the available patterns, with the subset determined by a transmission configuration.

    摘要翻译: 本公开的某些方面提供了用于分配用于发送参考信号(RS)的资源的技术。 根据某些方面,可以定义大量可能的CSI-RS资源(“CSI-RS模式”),并且基站可以从可用模式的子集中选择CSI-RS模式,其中子集由 传输配置。

    Method and apparatus for sounding antennas in wireless communication
    116.
    发明授权
    Method and apparatus for sounding antennas in wireless communication 有权
    无线通信天线探测方法及装置

    公开(公告)号:US08948196B2

    公开(公告)日:2015-02-03

    申请号:US13099200

    申请日:2011-05-02

    IPC分类号: H04B7/212 H04L25/03 H04L5/00

    CPC分类号: H04L25/03343 H04L5/0048

    摘要: Methods and apparatuses are provided that facilitate sounding antennas in wireless communication. In an aspect, a method for wireless communication includes determining at least one resource reserved for transmitting a demodulation reference signal and transmitting a sounding reference signal over the at least one resource. In another aspect, a method of wireless communication includes signaling a parameter related to sounding multiple antenna ports, receiving signals from a device over the multiple antenna ports, and estimating a channel related to the signals at least in part by removing a precoding from the signals.

    摘要翻译: 提供了便于在无线通信中探测天线的方法和装置。 一方面,一种用于无线通信的方法包括:确定至少一个被保留的用于发送解调参考信号的资源,以及通过所述至少一个资源发送探测参考信号。 在另一方面,一种无线通信方法包括:发信号通知多个天线端口的声音,从多个天线端口接收来自设备的信号,以及至少部分地通过从所述信​​号中去除预编码来估计与所述信号有关的信道 。

    Method and apparatus for communication with shortened signal formats
    117.
    发明授权
    Method and apparatus for communication with shortened signal formats 有权
    用于缩短信号格式的通信方法和装置

    公开(公告)号:US08929393B2

    公开(公告)日:2015-01-06

    申请号:US13099184

    申请日:2011-05-02

    摘要: Techniques for addressing high interference observed by a receiver in a wireless communication system are disclosed. The receiver may observe different interference power levels across a transmission symbol. In an aspect, the receiver applies different weights to different portions of the transmission symbol to account for fluctuation of interference power across the transmission symbol. In another aspect, a transmitter may send a transmission symbol such that a receiver can ignore a portion of a symbol period with high interference. In one design, the transmitter generates a transmission symbol including at least two copies of a signal component. The transmitter transmits at least one copy of the signal component in a portion of the symbol period in which the receiver does not observe high interference. The receiver processes the at least one copy of the signal component to recover data sent in the transmission symbol.

    摘要翻译: 公开了一种用于解决由无线通信系统中的接收机观察到的高干扰的技术。 接收机可以在传输符号上观察不同的干扰功率电平。 在一方面,接收机对传输符号的不同部分应用不同的权重,以考虑跨越传输符号的干扰功率的波动。 在另一方面,发射机可以发送传输符号,使得接收机可以忽略具有高干扰的符号周期的一部分。 在一种设计中,发射机产生包括信号分量的至少两个副本的传输符号。 发射机在接收机不观察到高干扰的符号周期的一部分中发送信号分量的至少一个副本。 接收机处理信号分量的至少一个副本以恢复在传输符号中发送的数据。

    Reference signal reception and channel state information determination for multiple nodes in a wireless communication network
    119.
    发明授权
    Reference signal reception and channel state information determination for multiple nodes in a wireless communication network 有权
    参考信号接收和无线通信网络中多个节点的信道状态信息确定

    公开(公告)号:US08681651B2

    公开(公告)日:2014-03-25

    申请号:US13288172

    申请日:2011-11-03

    IPC分类号: G01R31/08

    摘要: Techniques for receiving reference signals from multiple nodes and determining channel state information (CSI) for the nodes are disclosed. A user equipment (UE) may determine and report CSI for the multiple nodes to support data transmission to the UE. The nodes may transmit reference signals based on different configurations. The configuration for each node may indicate when, where, and how the node transmits its reference signal. The UE may determine CSI for different nodes and/or different combinations of nodes based on the reference signals transmitted by these nodes as well as an indication of which subframes to use to determine each CSI reported by the UE. The UE may report different CSIs for different subframes and may receive data transmission sent by a single node or a combination of nodes based on the reported CSIs.

    摘要翻译: 公开了用于从多个节点接收参考信号并确定节点的信道状态信息(CSI)的技术。 用户设备(UE)可以确定并报告多个节点的CSI以支持向UE的数据传输。 节点可以基于不同的配置发送参考信号。 每个节点的配置可以指示节点发送其参考信号的时间,地点和方式。 UE可以基于由这些节点发送的参考信号来确定不同节点和/或节点的不同组合的CSI以及用于确定由UE报告的每个CSI的哪些子帧的指示。 UE可以针对不同的子帧报告不同的CSI,并且可以基于所报告的CSI接收单个节点或节点的组合发送的数据传输。

    Assignment of ACK resource in a wireless communication system
    120.
    发明授权
    Assignment of ACK resource in a wireless communication system 有权
    ACK资源在无线通信系统中的分配

    公开(公告)号:US08531962B2

    公开(公告)日:2013-09-10

    申请号:US12431424

    申请日:2009-04-28

    IPC分类号: G01R31/08

    摘要: Techniques for assigning acknowledgement (ACK) resource to a user equipment (UE) in a wireless communication system are described. In one design, a first parameter indicative of radio resources (e.g., the lowest index of at least one physical resource block) allocated to the UE for data transmission may be obtained. A second parameter indicative of another resource (e.g., a cyclic shift of a reference signal sequence) assigned to the UE for data transmission may also be obtained. The first and/or second parameter may be restricted, and each restricted parameter may be limited to a set of allowed values among all available values for the parameter. ACK resource assigned to the UE for data transmission may be determined based on the first and second parameters. In one design, sequential first parameter values may be mapped to sequential ACK resources indices. In another design, mirror mapping with different mapping directions may be used for different allowed values of the second parameter.

    摘要翻译: 描述了在无线通信系统中向用户设备(UE)分配确认(ACK)资源的技术。 在一种设计中,可以获得指示分配给用于数据传输的UE的无线电资源(例如,至少一个物理资源块的最低索引)的第一参数。 还可以获得指示分配给用于数据传输的UE的另一资源(例如,参考信号序列的循环移位)的第二参数。 可以限制第一和/或第二参数,并且每个受限参数可以被限制在参数的所有可用值中的一组允许值。 可以基于第一和第二参数来确定分配给用于数据传输的UE的ACK资源。 在一种设计中,顺序的第一参数值可被映射到顺序的ACK资源索引。 在另一种设计中,具有不同映射方向的镜像映射可用于第二参数的不同允许值。