An NDN-Enabled Differentiated Routing Strategy for Blockchain

Abstract

Recently, blockchain has been used in financial payment, smart medicine, drones and other scenarios with its decentralized trust mechanism, distributed data storage, and non-tamper proof. Differentiated quality of service (QoS) assurance has become a measure to deal with the multi-directional expansion of blockchain and the wide range of application scenarios, but there are still problems that need to be solved in terms of providing differentiated QoS assurance. The blockchain provides two basic services, transactions and block synchronization. The QoS requirements of the application scenarios are not considered. This paper deploys the named data networking (NDN) at the network layer of the blockchain. In this paper, packets are shaped hop-by-hop at the router node. The window sliding strategy is used to establish the mapping relationship between packets and windows, so as to speed up the processing speed of packets and reduce the average delay of packet transmission. This paper also designs a forwarding strategy, which distributes packets to the forwarding queue according to the delay sensitivity of the packets in the sliding window and the possibility of packet timeout, so as to meet the delay requirements of delay-sensitive packets.