公开(公告)号：US20140289363A1

公开(公告)日：2014-09-25

申请号：US14222770

申请日：2014-03-24

Applicant: STMicroelectronics S.r.l.

Inventor： Alexandro SENTINELLI ,  Andrea Lorenzo VITALI ,  Allan TASCHINI

IPC: H04L29/08

CPC classification number: H04L67/10 ,  H04L1/00 ,  H04L1/0041 ,  H04L67/108

Abstract: In an embodiment, information contents, such as, e.g., media contents arranged in pieces including blocks of bits, is distributed over a network including plural terminals at least one of which acts as a source of the pieces of information distributed. Various terminals in the network are configured to act as peer terminals with at least one first peer terminal sending the information to one or more second peer terminals. A set of blocks of a corresponding piece of information is received at the first peer terminal and the corresponding piece of information is reconstructed from the set of blocks received. The pieces of information distributed over the network are fountain encoded by XOR-ing the blocks in a piece, so that a received piece is reconstructable from a combination of a corresponding set of linearly independent XOR-ed blocks. The first peer terminal may start sending to the second peer terminal(s) blocks it is receiving before the corresponding piece of information is reconstructed and possibly subjected to integrity check at the first terminal. Fountain encoding the pieces of information is by means of plural sets of linearly independent XOR-ed blocks. A same piece of information is distributed to a plurality of peer terminals by sending thereto different sets of linearly independent XOR-ed blocks, thus avoiding undue redundancy in the information further propagated to other peers.

Abstract translation: 在一个实施例中，信息内容，例如，诸如包括位块的片段的媒体内容，分布在包括多个终端的网络上，其中至少一个终端充当分发的信息的源。 网络中的各个终端被配置为充当与至少一个第一对等终端向对一个或多个第二对等终端发送信息的对等终端。 在第一对等端接收一组对应的信息块，并从所接收的一组块重构对应的信息段。 分布在网络上的信息通过对块中的块进行异或进行编码，从而可以从对应的一组线性独立的XOR编辑块的组合重建接收的片段。 第一对等终端可以在相应的信息片段被重建并且可能在第一终端进行完整性检查之前开始发送到它正在接收的第二对等端子块。 编码信息的喷泉是通过多组线性独立的XOR-ed块。 通过向多个对等终端发送不同的线性独立XOR-ed块集，将相同的信息分发到多个对等终端，从而避免进一步传播到其他对等体的信息中的过度冗余。