# An Accelerating Approach for Blockchain Information Transmission Based on NDN
###### Abstract  
Blockchain is becoming more and more popular in various fields. Since the information transmission mode of the blockchain is data broadcasting, the traditional TCP/IP network cannot support the blockchain system well, but the Named-Data Networking (NDN) could be a good choice because of its multi-path forwarding and intra-network caching functions. In this article, we propose a new blockchain information transmission acceleration strategy (AITS) combining with graph theory and probability theory based on the NDN architecture. We select some more important nodes in the network as \"secondary nodes\", and give them more bandwidth and cache space to assist the NDN network in data transmission. In order to select the correct node as the secondary node, we present a method to calculate the number of secondary nodes, and give the function to calculate the importance of each node. The simulation results show that in complex networks, the proposed method has superior performance in accelerating information transmission and reducing data overhead. named-data-networking; blockchain technology; information transmission; acceleration +
Footnote †: journal: Future Internet  
optimizations. For example, [PERSON] [4] proposed a hardware/software co-designed architecture for the proxy to accelerate the broadcast speed of the blockchain. They customize the Stratum protocol with a layer 2 broadcast mechanism instead of using TCP/IP connections. Another direction for optimization is to use a new network architecture to support the blockchain-based applications. [PERSON] [5] chose to use NDN to support the blockchain-based applications. [PERSON] proposed BlcokNDN [6], a bitcoin blockchain decentralized system over named data networking. They proposed a naming rules, by using the rules, the block is named an interest packet and is broadcast according to the transmission rules of the NDN network. Additionally, [PERSON] [7] presented BoNDN, which enables blockchain applications over NDN. In order to achieve compatibility between NDN and blockchain, they improved the blockchain data transmission process, and transmitted blocks on the network through interest broadcasting. The NDN network is very similar to the structure of the blockchain network. Both of them adopt a distributed structure and have a content-centric distribution mechanism. The information transmission mechanism of the NDN network naturally supports data distribution better than IP network. All in all, NDN provides a completely decentralized system and simplifies the system architecture. It also reduces the weak connection and the broadcast overhead. Similarly, there are some research to improve the transmission performance of NDN networks, for example, [PERSON] investigated the existing NDN name search methods [8], analyzed and compared common name search methods, and points out the direction of future work. In addition, [PERSON] proposed a reputation-based trust method that can complement existing methods to improve the trust and security of NDN networks [9]. In this paper, we conducted a design research and propose a blockchain information acceleration strategy based on the NDN network, where the NDN network provides fast data broadcasting services for the blockchain system. Specifically, we selected some important nodes in the network to provide them with greater bandwidth and cache to accelerate the transmission of blockchain information. We present a method to calculate the number of secondary nodes, and give the function to calculate the importance of each node, these methods are used to select appropriate nodes as secondary nodes in the network. The main contributions of this paper are as follows:  
(1) We propose an information acceleration strategy combining with graph theory and probability theory, which can reduce data transmission delay and data overhead. We give the concept of secondary node and introduce its function.