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    • 2. 发明申请
    • METHOD AND APPARATUS FOR RELIABLE TRANSMISSION OF CONTROL INFORMATION IN A WIRELESS COMMUNICATION NETWORK
    • 在无线通信网络中可靠传输控制信息的方法和装置
    • WO2011120007A1
    • 2011-09-29
    • PCT/US2011/030079
    • 2011-03-25
    • QUALCOMM INCORPORATEDCHEN, WanshiLUO, Tao
    • CHEN, WanshiLUO, Tao
    • H04L1/00
    • H04L1/004H04L1/008
    • Techniques for reliably transmitting and receiving control information in a wireless network are described. A cell may typically send control information on a control channel and associated data (e.g., system information) on a data channel in the same subframe. This subframe may have strong interference from other cells. For cross-subframe signaling, the cell may transmit the control information in a first subframe and the associated data in a second subframe. The first subframe may be a usable subframe for the cell and may have less interference from other cells. A UE may not know the location of the first subframe and may perform window-based decoding. The UE may decode the control channel in at least one subframe within a decoding window covering the first subframe to obtain the control information. The UE may then decode the data channel in the second subframe based on the control information to obtain the data.
    • 描述了在无线网络中可靠地发送和接收控制信息的技术。 小区通常可以在相同子帧上的数据信道上在控制信道上发送控制信息和相关数据(例如,系统信息)。 该子帧可能具有来自其他小区的强干扰。 对于跨子帧信令,小区可以在第二子帧中发送第一子帧中的控制信息和相关联的数据。 第一子帧可以是小区的可用子帧,并且可能具有来自其他小区的较小干扰。 UE可能不知道第一子帧的位置并且可以执行基于窗口的解码。 UE可以在覆盖第一子帧的解码窗口内的至少一个子帧中解码控制信道,以获得控制信息。 然后,UE可以基于控制信息来解码第二子帧中的数据信道,以获得数据。
    • 8. 发明申请
    • A FORWARD ERROR CORRECTION SYSTEM FOR PACKET BASED REAL-TIME MEDIA
    • 基于分组实时媒体的前向纠错系统
    • WO9930462A3
    • 1999-09-02
    • PCT/US9826421
    • 1998-12-11
    • 3COM CORPSCHUSTER GUIDO MMAHLER JERRY JSIDHU IKHLAQ SBORELLA MICHAEL S
    • SCHUSTER GUIDO MMAHLER JERRY JSIDHU IKHLAQ SBORELLA MICHAEL S
    • H03M13/00H04L1/00H04L12/00
    • H04L1/008H04L1/0057
    • A computationally simple yet powerful forward error correction code scheme for transmission of real-time media signals, such as digitized voice, video or audio, in a packet switched network, such as the Internet. According to one aspect, an encoder at the sending end derives p redundancy blocks from each group of a k payload blocks and concatenates the redundancy blocks, respectively, with payload blocks in the next group of k payload blocks. At the receiving end, a decoder may recover up to p missing packets in a group of k packets, provided with the p redundancy blocks carried by the next group of k packets. The invention may, for instance, append to each of a series of payload packets a single forward error correction code that is defined by taking the XOR sum of a preceding specified number of payload packets. The invention thereby enables correction from the loss of multiple packets in a row, without significantly increasing the data rate or otherwise delaying transmission.
    • 一种用于在分组交换网络(诸如因特网)中传输诸如数字化语音,视频或音频的实时媒体信号的计算上简单而强大的前向纠错码方案。 根据一个方面,发送端的编码器分别从k个有效载荷块的每个组中导出p个冗余块,并将冗余块分别与下一组k个有效载荷块中的有效负载块相连。 在接收端,解码器可以恢复一组k个分组中的p个丢失的分组,该分组具有由下一组k个分组携带的p个冗余块。 本发明可以例如附加到一系列有效载荷分组中的每一个,其通过获取先前指定数量的有效载荷分组的异或并定义的单个前向纠错码。 因此,本发明能够从一行中的多个分组的丢失中进行校正,而不会显着增加数据速率或以其他方式延迟传输。