Reliable fragmented transmission method based on network coding for 6LoWPAN (IPv6 over Low Power Wireless Personal Area Network)
A transmission method and network coding technology, applied in the field of network coding-based 6LoWPAN segmented reliable transmission, can solve problems such as low communication quality, limited data transmission rate and transmission power of node wireless transmitters, packet loss, etc.
Active Publication Date: 2015-05-06
ZHEJIANG UNIV OF TECH
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Problems solved by technology
In this way, the loss of any fragment of an IPv6 data packet will cause the sending node to resend all the fragments
Since the IEEE 802.15.4 standard is mainly for wireless personal area networks, the data transmission rate and transmission power of its node wireless transmitters are very limited, so the communication quality is not high, and packet loss is very common
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[0031] The present invention will be further described below.
[0032] The reliable transmission method of 6LoWPAN slices based on network coding of the present invention is composed of the "coding and sending method" of the sending party, that is, the sending node, and the "decoding method" of the receiving party, that is, the receiving node.
[0033] As mentioned earlier, an IPv6 data packet has at least 1280 bytes, and the maximum length of a wireless personal area network MAC frame based on the IEEE 802.15.4 standard is 127 bytes. Therefore, the node is sending an IPv6 data packet to the wireless personal area network. When the network node is used, fragmentation is required. Let the sender divide an IPv6 packet to be sent into n fragments: K 1 , K 2 , …, K n ; Assuming that the success rate of the communication link between the sender and the receiver is p, the sender sends 1 / p times on average to successfully send a piece of data to the receiver.
[0034] When the se...
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The invention discloses a reliable fragmented transmission technology based on network coding for 6LoWPAN (IPv6 over Low Power Wireless Personal Area Network), wherein the 6LoWPAN comprises sending nodes and receiving nodes. The reliable fragmented transmission method based on network coding for the 6LoWPAN comprises ''a coding and sending method'' of the sending nodes and ''a decoding method'' of the receiving nodes; in the coding and sending method, IPv6 data to be sent are fragmented by the sending nodes, a plurality of fragmented codes are formed as a plurality of coded packets via network coding, and the coded packets and coding vectors of the coded packets are sent to the receiving nodes; in the decoding method, original data fragments are obtained by the receiving nodes via decoding, and the data fragments are recovered as initial IPv6 data packets. The reliable fragmented transmission method based on network coding for the 6LoWPAN disclosed by the invention has the beneficial effects mainly expressed as follows: in low-power consumption wireless personal area networks with unreliable links, resending of the data packets by the sending nodes is avoided, therefore, the reliability of transmission of the data packets is improved, and transmission energy consumption of the nodes of the 6LoWPAN is reduced.
Description
technical field [0001] The invention relates to an interconnection and intercommunication method between a low-power wireless personal area network and the Internet, and more particularly relates to a reliable transmission method of 6LoWPAN slices based on network coding. Background technique [0002] In order to make full use of the existing Internet technology, the IETF (Internet Engineering Task Force) working group formulated the 6LoWPAN (IPv6 over Low Power Wireless Personal Area Networks) protocol in 2007, making low-power wireless personal area networks based on the IEEE 802.15.4 standard WPAN, that is, Wireless Personal Area Network, can communicate with the Internet. [0003] Currently, the Internet widely uses the IPv6 protocol. In the IPv6 protocol, the minimum transmission unit (MTU) of network layer data packets, namely the Minimum Transmission Unit, is 1280 bytes. However, in WPAN based on the IEEE 802.15.4 standard, the maximum length of the MAC frame is 127...
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IPC IPC(8): H04L29/08H04L1/00H04L29/06
Inventor 朱艺华赵城池凯凯
Owner ZHEJIANG UNIV OF TECH