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    • 1. 发明授权
    • Robust HARQ-ACK design for MF-HSDPA
    • MF-HSDPA的鲁棒HARQ-ACK设计
    • US09008201B2
    • 2015-04-14
    • US13702602
    • 2012-11-09
    • Telefonaktiebolaget L M Ericsson (publ)
    • Johan HultellPeter von Wrycza
    • H04K1/10H04L27/28H04L1/18H04L1/00H04L1/16H04L27/26H04L1/12
    • H04L1/1864H04L1/0043H04L1/0073H04L1/1621H04L27/2647H04L2001/125
    • When a UE (12) is configured with MF-HSDPA and HARQ-ACK information associated with cells (14, 16) (characterized by potentially different downlink timing) is jointly encoded, only part of the existing Rel-9 HARQ-ACK codebook is reused. In one embodiment, only the codebook conflict arising from reuse of encodings is resolved. This is achieved by introducing a new codeword for at least one of the HARQ-ACK code words that are used multiple times in the existing Rel-9 codebook. In another embodiment, all codewords in the Rel-9 HARQ-ACK codebook having a Hamming distance smaller than a predetermined value (but not all codewords) are replaced. In yet another embodiment, all codewords in the Rel-9 HARQ-ACK codebook having a Hamming distance smaller than a predetermined value (but not all codewords) that would cause ambiguity at the NodeB receiver (i.e. where the interpretation of the HARQ-ACK information for one cell (14) depends on the number of streams transmitted at the other cell (16)) are replaced.
    • 当UE(12)配置有MF-HSDPA并且与小区(14,16)相关联的HARQ-ACK信息(由潜在不同的下行链路定时表征)被联合编码时,只有现有的Rel-9 HARQ-ACK码本的一部分是 重复使用 在一个实施例中,仅解码由重用编码产生的码本冲突。 这通过在现有的Rel-9码本中引入用于多次的HARQ-ACK码字中的至少一个的新码字来实现。 在另一个实施例中,具有小于预定值(但不是全部码字)的汉明距离的Rel-9 HARQ-ACK码本中的所有码字被替换。 在另一个实施例中,Rel-9 HARQ-ACK码本中的所有码字具有小于预定值(但不是全部码字)的汉明距离,这将在节点B接收机处引起歧义(即,HARQ-ACK信息的解释 对于一个单元(14)取决于在另一个单元(16)处发送的流的数量)被替换。