公开(公告)号：US20120284581A1

公开(公告)日：2012-11-08

申请号：US13552968

申请日：2012-07-19

Applicant: Peter LARSSON

Inventor： Peter LARSSON

IPC: H04L1/18

CPC classification number: H04L1/1887 ,  H04L1/1845 ,  H04L5/0044 ,  H04L5/0058 ,  H04L12/1868 ,  H04L2001/0093

Abstract: Regular data packets are scheduled for transmission from a sender to multiple receivers in a multicast ARQ system. In a joint scheduling and encoding procedure, a composite data packet is formed as a weighted linear combination of regular data packets. The corresponding coding weights are adapted based on feedback information from the receivers about received data packets such the composite packet represents a new linearly independent coding of regular data packets different from any multicast data packet previously received in a selected set of the receivers during the multicast session. A weight vector with at least two different non-zero coding weights adds a further degree of freedom and guarantees the ability to form a composite data packet that represents a new linearly independent coding for transmission.

Abstract translation: 定期数据包被安排在组播ARQ系统中从发送方发送到多个接收者。 在联合调度和编码过程中，形成复合数据分组作为常规数据分组的加权线性组合。 相应的编码权重基于来自接收机的关于接收到的数据分组的反馈信息进行调整，使得复合分组表示在多播会话期间先前在所选接收机组中接收到的任何多播数据分组不同的常规数据分组的新的线性独立编码 。 具有至少两个不同的非零编码权重的加权向量增加了进一步的自由度，并且保证形成表示用于传输的新的线性独立编码的复合数据分组的能力。