Pilot Design and Channel Estimation
    1.
    发明申请
    Pilot Design and Channel Estimation 有权
    导频设计和信道估计

    公开(公告)号:US20060285484A1

    公开(公告)日:2006-12-21

    申请号:US11424939

    申请日:2006-06-19

    IPC分类号: H04J11/00

    摘要: Embodiments of the invention provide method and apparatus for generating a structure in an orthogonal frequency division multiplexing communication system having a transmitter with a least one transmitting antenna, said method comprising; composing a frame with a time domain and a frequency domain, wherein the frame has a transmission time interval in the time domain and locating a pilot signal, having pilot power level, from a first at least one antenna into two orthogonal frequency division multiplexing symbols of said frame.

    摘要翻译: 本发明的实施例提供了一种用于在具有至少一个发射天线的发射机的正交频分复用通信系统中生成结构的方法和装置,所述方法包括: 构成具有时域和频域的帧,其中所述帧具有时域中的传输时间间隔,并且将具有导频功率电平的导频信号从第一至少一个天线定位到两个正交频分复用符号 说框架

    Method for Transmission of Unicast Control in Broadcast/Multicast Transmission Time Intervals
    2.
    发明申请
    Method for Transmission of Unicast Control in Broadcast/Multicast Transmission Time Intervals 有权
    在广播/组播传输时间间隔内传输单播控制的方法

    公开(公告)号:US20070104151A1

    公开(公告)日:2007-05-10

    申请号:US11554959

    申请日:2006-10-31

    IPC分类号: H04B7/216

    摘要: Embodiments of the invention provide methods for maximizing the bandwidth utilization in the uplink of a communication system supporting time division multiplexing between unicast and multicast/broadcast communication modes during transmission time intervals in the downlink of a communication system. This is accomplished by multiplexing at least unicast control signaling for UL scheduling assignments in TTIs supporting the multicast/broadcast communication mode. Moreover, multiplexing of unicast control signaling can also be accomplished by splitting a symbol of the multicast/broadcast TTI into two shorter symbols with the first of these two shorter symbols carrying at least unicast control signaling and the second of these shorter symbols carrying multicast/broadcast signaling.

    摘要翻译: 本发明的实施例提供了一种用于在通信系统的下行链路中的传输时间间隔期间最大化在单播和多播/广播通信模式之间支持时分复用的通信系统的上行链路中的带宽利用率的方法。 这通过在支持多播/广播通信模式的TTI中多路复用至少用于UL调度分配的单播控制信令来实现。 此外,单播控制信令的复用也可以通过将多播/广播TTI的符号分成两个较短的符号来实现,其中这两个较短的符号中的第一个携带至少单播控制信令,并且这些较短的符号中的第二个携带多播/广播 信令。

    Slow Uplink Power Control
    3.
    发明申请
    Slow Uplink Power Control 有权
    缓慢上行电源控制

    公开(公告)号:US20060286995A1

    公开(公告)日:2006-12-21

    申请号:US11425202

    申请日:2006-06-20

    IPC分类号: H04B7/00 H04Q7/20

    摘要: Embodiments of the invention provide embodiments of the invention provide and method, network entity and user equipment for slow uplink power control of user equipment in a wireless communication system by responding to a long term control metric that is derived from an uplink channel metric over a plurality of transmission instances and a set of performance criteria. A method for slow uplink power control in accordance with and embodiment of the invention measures at least one uplink channel metric for user equipment and then determines an appropriate transmit power for the user equipment by using a control metric derived from the uplink channel metric corresponding to a plurality of transmission instances for the user equipment.

    摘要翻译: 本发明的实施例提供和方法,网络实体和用户设备,用于通过响应从多个上行链路信道度量导出的长期控制度量,在无线通信系统中对用户设备进行慢速上行链路功率控制 的传输实例和一组性能标准。 根据本发明的实施例的用于慢速上行链路功率控制的方法测量用户设备的至少一个上行链路信道度量,然后通过使用从与对应于上行链路信道度量的上行链路信道度量导出的控制度量来确定用户设备的适当发射功率 用户设备的多个传输实例。

    Interference cancellation system and method

    公开(公告)号:US07133435B2

    公开(公告)日:2006-11-07

    申请号:US10176156

    申请日:2002-06-20

    IPC分类号: H04B1/69 H04B1/713

    CPC分类号: H04B1/71072 H04B1/71075

    摘要: A method for reducing multiple access interference (MAI) in a code division multiple access (CDMA) spread spectrum receiver assigned a number of codes which also despreads the received signal with the remaining codes of the same spreading factor. For forward link transmission with orthogonal codes, as in 3GPP and 3GPP2, interferers using larger spreading factors than the one used by the referenced mobile will have codes that are formed from the orthogonal codes of the same spreading factor as the multicodes corresponding to the referenced mobile. As a consequence, in a multipath environment, the output of a despreader using any of these remaining orthogonal codes will provide an estimate of the composite interference attributed to signals, if any, using codes that partly comprise the corresponding orthogonal code. No decisions are made for the previous despreader's output because it corresponds to a sum of interferers with unknown powers. However, this soft output can be re-spread and subtracted from the received signal prior to despreading, thereby removing the corresponding composite interference. This can significantly improve the performance of a receiver performing interference cancellation of both assigned and interfering signals, especially when the interfering signals have a substantial total power.

    Method for channel quality indicator computation and feedback in a multi-carrier communications system
    5.
    发明申请
    Method for channel quality indicator computation and feedback in a multi-carrier communications system 审中-公开
    多载波通信系统中信道质量指标计算和反馈的方法

    公开(公告)号:US20050207367A1

    公开(公告)日:2005-09-22

    申请号:US11085590

    申请日:2005-03-21

    摘要: Method for computing and transmitting channel quality information in a multi-carrier communications system. A preferred embodiment comprises receiving a transmission from a transmitter, wherein the transmission occurs over a plurality of carriers, measuring a channel condition for each carrier in a plurality of carriers, computing a channel quality indicator based upon the measured channel condition, and providing the channel quality indicator to the transmitter. The channel quality indicator can be used at the transmitter to schedule transmissions to various users in the multi-carrier communications system to maximize utilization of the carriers as well as overall network performance.

    摘要翻译: 用于在多载波通信系统中计算和发送信道质量信息的方法。 优选实施例包括从发射机接收传输,其中所述传输发生在多个载波上,测量多个载波中的每个载波的信道状况,基于测量的信道状况计算信道质量指示符,以及提供信道 质量指示器到发射机。 可以在发射机处使用信道质量指示符来调度对多载波通信系统中的各种用户的传输,以最大限度地利用载波以及整体网络性能。

    Packet transmission scheduling in a multi-carrier communications system
    6.
    发明申请
    Packet transmission scheduling in a multi-carrier communications system 审中-公开
    多载波通信系统中的分组传输调度

    公开(公告)号:US20050207441A1

    公开(公告)日:2005-09-22

    申请号:US11085452

    申请日:2005-03-21

    CPC分类号: H04L5/023 H04L27/2608

    摘要: Method for packet transmission scheduling in a multi-carrier communications system. A preferred embodiment comprises selecting a set of users from a group of users who are targets of intended transmissions, wherein the selection is based upon channel quality information, determining a set of transmission parameters for each user in the set of users, and scheduling transmissions to the set of users. The channel quality information, which can be provided by the users of the multi-carrier communications system, can permit the exploitation of frequency diversity inherent in the multi-carrier communications system to increase system capacity to beyond a simple sum of carrier transmission bandwidth.

    摘要翻译: 多载波通信系统中分组传输调度的方法。 优选实施例包括从作为目标传输目标的一组用户中选择一组用户,其中所述选择基于信道质量信息,确定用户组中每个用户的一组传输参数,并将传输调度到 该组用户。 可以由多载波通信系统的用户提供的信道质量信息可以允许利用多载波通信系统中固有的频率分集来增加系统容量以超出载波传输带宽的简单和。

    Hybrid ARQ schemes for a multi-carrier communications system
    7.
    发明申请
    Hybrid ARQ schemes for a multi-carrier communications system 审中-公开
    用于多载波通信系统的混合ARQ方案

    公开(公告)号:US20050207345A1

    公开(公告)日:2005-09-22

    申请号:US11085591

    申请日:2005-03-21

    IPC分类号: H04L1/18 H04L12/26 H04L27/26

    摘要: Method for exploiting frequency diversity in a multi-carrier communications system to improve retransmission performance. A preferred embodiment comprises receiving the request for retransmission, formatting data for the retransmission, selecting a carrier from a plurality of carriers, and transmitting the retransmission on the selected carrier. The selected carrier may be different from a carrier used transmit the damaged transmission, thereby frequency diversity is exploited to change the probability of successful transmission in the retransmission. Alternatively, the retransmission may take place at a later time, to permit changes in the selected carrier to take place and obtain frequency diversity via the changed carrier.

    摘要翻译: 利用多载波通信系统中的频率分集来提高重传性能的方法。 优选实施例包括接收重传请求,格式化重传数据,从多个载波中选择载波,以及在所选载波上发送重传。 所选择的载波可能与使用的载波不同,发送损坏的传输,从而利用频率分集来改变重传中成功传输的概率。 或者,重传可以在稍后的时间进行,以允许所选择的载波中的改变发生并通过改变的载波获得频率分集。