METHOD AND APPARATUS FOR TRANSMITTING NON-DECODABLE PACKETS
    3.
    发明申请
    METHOD AND APPARATUS FOR TRANSMITTING NON-DECODABLE PACKETS 审中-公开
    用于发送非可解码分组的方法和装置

    公开(公告)号:US20090046713A1

    公开(公告)日:2009-02-19

    申请号:US12188851

    申请日:2008-08-08

    IPC分类号: H04L12/56

    CPC分类号: H04L1/1819 H04L1/1854

    摘要: Acknowledgments (ACKs/NACKs) are suppressed when transmitting non-decodable packets in a communication system that utilizes HARQ. Non-decodable packets are transmitted to save system bandwidth and make the overall spectral efficiency higher. The transmitter and receiver know that in HARQ when the transmitter transmits a non-decodable packet to the receiver, this will cause the receiver to automatically transmit back a NACK. The transmitter and receiver exploit this fact by discarding and/or not transmitting the NACK (respectively).

    摘要翻译: 在使用HARQ的通信系统中发送不可解码分组时,确认(ACK / NACK)被抑制。 传输不可解码数据包以节省系统带宽,使总体频谱效率更高。 发射机和接收机知道,当发射机向接收机发送不可解码的分组时,在HARQ中,这将导致接收机自动发送NACK。 发射机和接收机通过分别丢弃和/或不发送NACK来分别利用这一事实。

    Varied transmission time intervals for wireless communication system

    公开(公告)号:US08787347B2

    公开(公告)日:2014-07-22

    申请号:US12389089

    申请日:2009-02-19

    IPC分类号: H04J3/24

    CPC分类号: H04W72/1231

    摘要: Embodiments describe a varied transmission time interval in wireless communication system. According to some embodiments is a method for assigning a transmission time interval. The method can include measuring a channel condition and/or a data rate of packet communicated by at least one wireless device. Based in part on the data rate and/or channel condition information, a determination can be made whether to schedule a long transmission time interval or a short transmission time interval to the packet. A long transmission time interval can be scheduled if the channel condition is poor and/or there is a low data rate. A short transmission time interval can be scheduled if the channel condition is good and/or the data rate is high or fast. The method can be repeated for multiple wireless devices. Also included is an alternative interlacing structure that supports both long transmission time intervals and short transmission time intervals.

    Shared signaling channel
    10.
    发明授权
    Shared signaling channel 有权
    共享信令通道

    公开(公告)号:US09225488B2

    公开(公告)日:2015-12-29

    申请号:US11261158

    申请日:2005-10-27

    IPC分类号: H04J1/00 H04L5/00

    摘要: 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.

    摘要翻译: 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。