公开(公告)号：EP2915300A1

公开(公告)日：2015-09-09

申请号：EP13765813.4

申请日：2013-08-21

申请人： Telefonaktiebolaget L M Ericsson (Publ)

发明人： LARSSON, Erik ,  VON WRYCZA, Peter ,  WANG, Yi-Pin Eric ,  SAMUEL BEBAWY, Michael

IPC分类号： H04L25/02

CPC分类号： H04W36/04 ,  H04L25/0224 ,  H04W24/02 ,  H04W36/165 ,  H04W36/18 ,  H04W88/08

摘要： A method in a network node for estimating a channel from a user node to the network node is provided. The network node receives first pilots. The network node receives (502) additional pilots from the user node. The network node estimates (503) the channel based on the additional pilots. The additional pilots are any one out of: pilots in an existing channel, modified to create space for the additional pilots, and an existing mechanism modified to be used as the additional pilots.

公开(公告)号：EP2777201A1

公开(公告)日：2014-09-17

申请号：EP12790992.7

申请日：2012-11-09

申请人： Telefonaktiebolaget L M Ericsson (publ)

发明人： HULTELL, Johan ,  VON WRYCZA, Peter

IPC分类号： H04L1/16 ,  H04L1/00

CPC分类号： H04L1/1864 ,  H04L1/0043 ,  H04L1/0073 ,  H04L1/1621 ,  H04L27/2647 ,  H04L2001/125

摘要： 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.

摘要翻译： 当UE（12）被配置有与小区（14,16）相关联的（与可能不同的下行链路定时相关联的）MF-HSDPA和HARQ-ACK信息时，被联合编码，现有的Rel-9HARQ-ACK码本的仅一部分是 重复使用。 在一个实施例中，只解决由编码的重用引起的码本冲突。 这是通过在现有的Rel-9码本中为多次使用的至少一个HARQ-ACK码字引入新的码字来实现的。 在另一个实施例中，替换了汉明距离小于预定值（但不是全部码字）的Rel-9HARQ-ACK码本中的所有码字。 在又一个实施例中，Rel-9HARQ-ACK码本中的所有码字具有小于预定值（但不是所有码字）的汉明距离，所述预定值将导致节点B接收机处的模糊（即，在解释HARQ-ACK信息 对于一个小区（14）取决于在另一个小区（16）处传输的流的数量）被替换。