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    • 3. 发明申请
    • SHARED SIGNALING CHANNEL
    • 共享信道
    • WO2007051159A2
    • 2007-05-03
    • PCT/US2006/060292
    • 2006-10-27
    • QUALCOMM IncorporatedKHANDEKAR, AamodGOROKHOV, AlexeiGORE, Dhananjay, AshokTEAGUE, Edward, HarrisonDONG, Min
    • KHANDEKAR, AamodGOROKHOV, AlexeiGORE, Dhananjay, AshokTEAGUE, Edward, HarrisonDONG, Min
    • H04Q7/38H04L27/26H04B7/005
    • H04L5/0044H04L5/0007H04L5/0048H04L5/0053
    • A shared signaling channel can be used in an Orthogonal Frequency Division Multiple Access (OFDMA) communication system to provide signaling, acknowledgement, and power control messages to access terminals within the system. The shared signaling channel can be assigned to a predetermined number of sub-carriers within any frame. The assignment of a predetermined number of sub-carriers to the shared signaling channel establishes a fixed bandwidth overhead for the channel. The actual sub-carriers assigned to the channel can be varied periodically, and can vary according to a predetermined frequency hopping schedule. The amount of signal power allocated to the signaling channel can vary on a per symbol basis depending on the power requirements of the communication link. The shared signaling channel can direct each message carried on the channel to one or more access terminals. Unicast messages allow the channel power to be controlled per the needs of individual communication links.
    • 可以在正交频分多址(OFDMA)通信系统中使用共享信令信道,以向系统内的接入终端提供信令,确认和功率控制消息。 共享信令信道可以被分配给任何帧内的预定数量的子载波。 将预定数量的子载波分配给共享信令信道为信道建立固定的带宽开销。 分配给信道的实际子载波可以周期性地变化,并且可以根据预定的跳频调度而变化。 分配给信令信道的信号功率的量可以根据通信链路的功率要求在每个符号的基础上变化。 共享信令信道可以将信道上承载的每个消息引导到一个或多个接入终端。 单播消息允许根据各个通信链路的需要来控制信道功率。
    • 5. 发明申请
    • INCREMENTAL PILOT INSERTION FOR CHANNEL AND INTERFERENCE ESTIMATION
    • 用于通道和干扰估计的增量试点插入
    • WO2006020021A1
    • 2006-02-23
    • PCT/US2005/025157
    • 2005-07-15
    • QUALCOMM INCORPORATEDGORE, Dhananjay, AshokAGRAWAL, AvneeshKHANDEKAR, Aamod
    • GORE, Dhananjay, AshokAGRAWAL, AvneeshKHANDEKAR, Aamod
    • H04L27/26
    • H04L25/0226H04L5/0007H04L5/005H04L5/0051H04L5/006
    • Dynamic resource allocation systems, apparatus, and methods are disclosed for selectively improving the ability of a receiver to determine a channel estimate in an Orthogonal Frequency Division Multiple Access (OFDMA) system. A wireless communication system can use a common pilot channel configuration to aid channel estimation in one or more receivers in communication with the system. A receiver in communication with the system may be unable to demodulate received data due to an inaccurate channel estimate. The receiver can communicate to a transmitter in the system a request for additional channel estimation resources. The wireless communication system can provide additional channel estimation resources by inserting dedicated pilot channels into one or more of the frequencies allocated to symbols for the receiver. If the receiver is still unable to demodulate received data, the wireless communication system can incrementally insert additional pilot channels in the symbol associated with the receiver.
    • 公开了动态资源分配系统,装置和方法,用于选择性地提高接收机在正交频分多址(OFDMA)系统中确定信道估计的能力。 无线通信系统可以使用公共导频信道配置来辅助与系统通信的一个或多个接收机中的信道估计。 与系统通信的接收机可能由于不准确的信道估计而无法解调所接收的数据。 接收机可以向系统中的发射机通信另外的信道估计资源的请求。 无线通信系统可以通过将专用导频信道插入分配给接收机的符号的一个或多个频率来提供额外的信道估计资源。 如果接收机仍然不能解调所接收的数据,则无线通信系统可以递增地在与接收机相关联的符号中插入附加的导频信道。
    • 9. 发明申请
    • CHANNEL STRUCTURES FOR A QUASI-ORTHOGONAL MULTIPLE-ACCESS COMMUNICATION SYSTEM
    • 正交多通道通信系统的通道结构
    • WO2006099577A1
    • 2006-09-21
    • PCT/US2006/009757
    • 2006-03-16
    • QUALCOMM INCORPORATEDJI, TingfangNAGUIB, AymanSUTIVONG, ArakGORE, Dhananjay, AshokGOROKHOV, Alexei
    • JI, TingfangNAGUIB, AymanSUTIVONG, ArakGORE, Dhananjay, AshokGOROKHOV, Alexei
    • H04J11/00
    • H04J11/005H04B1/7143
    • A channel structure has at least two channel sets. Each channel set contains multiple channels and is associated with a specific mapping of the channels to the system resources available for data transmission. Each channel set may be defined based on a channel tree having a hierarchical structure. To achieve intra-cell interference diversity, the channel-to-resource mapping for each channel set is pseudo-random with respect to the mapping for each remaining channel set. In each scheduling interval, terminals are scheduled for transmission on the forward and/or reverse link. The scheduled terminals are assigned channels from the channel sets. Multiple terminals may use the same system resources and their overlapping transmissions may be separated in the spatial domain. For example, beamforming may be performed to send multiple overlapping transmissions on the forward link, and receiver spatial processing may be performed to separate out multiple overlapping transmissions received on the reverse link.
    • 通道结构具有至少两个通道组。 每个信道集合包含多个信道,并且将信道的特定映射与可用于数据传输的系统资源相关联。 可以基于具有分层结构的信道树来定义每个信道集合。 为了实现小区内干扰分集,每个信道集合的信道到资源映射相对于每个剩余信道集合的映射是伪随机的。 在每个调度间隔中,终端被调度为在前向链路和/或反向链路上传输。 调度终端从通道集分配通道。 多个终端可以使用相同的系统资源,并且它们的重叠传输可以在空间域中分离。 例如,可以执行波束成形以在前向链路上发送多个重叠传输,并且可以执行接收机空间处理以分离在反向链路上接收的多个重叠传输。