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    • 1. 发明授权
    • Selective repeat ARQ with efficient utilization of bitmaps
    • 选择性重复ARQ,有效利用位图
    • US06778501B1
    • 2004-08-17
    • US09543156
    • 2000-04-04
    • Göran MalmgrenGunnar RydnellJan LindskogGyörgy MiklosHui LiFredrik Nilsson
    • Göran MalmgrenGunnar RydnellJan LindskogGyörgy MiklosHui LiFredrik Nilsson
    • H04L1256
    • H04L1/1809H04L1/1614H04L1/187
    • In a wireline or wireless telecommunications system or data network, which employs a Selective Repeat Automatic Repeat Request (ARQ) to convey data packet reception status for a sequence of data packets grouped together into a number of blocks of data packets, partial bit mapping is employed to improve efficiency, particularly with respect to bandwidth. This may be accomplished, more specifically, by including in the ARQ message that is sent from the receiver to the sender, a number of partial bitmaps, along with a corresponding number of bitmap block numbers, where a first bitmap block number identifies a particular one of the blocks of data packets and the corresponding bitmap defines the reception status of the data packets in that block. Each of the remaining bitmap block numbers identify an additional block of data packets relative to the first block of data packets. Accordingly, the remaining bitmap block numbers require fewer bits to identify their corresponding data packet blocks.
    • 在有线或无线电信系统或数据网络中,其使用选择性重复自动重传请求(ARQ)来将分组在一起的数据分组序列的数据分组接收状态传送到多个数据分组块,采用部分比特映射 以提高效率,特别是在带宽方面。 这可以更具体地通过将从接收器发送到发送器的ARQ消息中包括多个部分位图以及相应数量的位图块号码来实现,其中第一位图块号码标识特定的一个 的数据分组块和相应的位图定义了该块中的数据分组的接收状态。 剩余的位图块号码中的每一个标识相对于第一数据包块的附加数据包块。 因此,剩余的位图块号需要较少的比特来标识它们对应的数据分组块。
    • 4. 发明授权
    • Unequal error protection in a packet transmission system
    • 分组传输系统中的不平等的错误保护
    • US07333449B2
    • 2008-02-19
    • US10432519
    • 2001-11-27
    • Gerd ZimmermannHui LiFabian WengerJan LindskogMathias Pauli
    • Gerd ZimmermannHui LiFabian WengerJan LindskogMathias Pauli
    • H04B7/212
    • H04L1/007H04L1/0003H04L1/0009H04L1/08
    • In a packet transmission system, especially wireless transmission system, where data is transmitted in packets at different error protection levels and where the error protection level of one packet (=the succeeding packet) may differ from the error protection level of a preceding packet without providing code termination between the said preceding and the said succeeding packet the performance may degrade in case a different error protection level is used by the preceding packet and the succeeding packet. The invention proposes in these cases to insert a supplementary packet between the preceding and the succeeding packet whereby the error protection level of the supplementary packet is higher than the lowest error protection level that is used either by the preceding or the succeeding packet.
    • 在分组传输系统中,特别是无线传输系统,其中数据以不同的错误保护级别以分组传输,并且一个分组(=后续分组)的错误保护级别可能不同于前一分组的错误保护级别而不提供 在前一个分组和后续分组使用不同的错误保护级别的情况下,所述前一个和所述后续分组之间的代码终止可能会降级。 本发明在这些情况下提出在前一个分组之间插入补充分组,由此补充分组的错误保护等级高于由前一个或后续分组使用的最低的错误保护等级。