| 摘要 |
The present invention relates to a system for transmitting erasure resilient code-based multi-block data via a wireless network. A sink node fragments files to be transferred into blocks of a small size; performs encoding; and transmits transmission frames composed of a plurality of blocks. A middle node upon receipt of the transmission frames checks a sequence number; disposes of an error block by using CRC; thereafter stores the remaining blocks only in a temporary buffer; and has a maximum number of blocks from the temporary buffer to be included in the transmission frame, and transfers to neighboring nodes by broadcast. Thereby, the purpose of the present invention is to provide a system which can maximize efficiency and performance of a wireless network. To this end, the present invention includes: a sink node which fragments data to be transmitted to blocks having a predetermined size, encodes the blocks as erasure resilient codes, adds a subset to the encoded block, and collects the encoded blocks so as to form a frame, which is a transmission unit of a wireless network; and a middle node which uses a subset of blocks, which is present on the frame received from the sink node and a neighboring node, so as to check whether blocks are overlapping, or erroneous, and form a new frame composed of non-overlapping blocks and non-erroneous blocks. |
