# Adjacency-Information-Entropy-Based Cooperative Name Resolution Approach in ICN
###### Abstract  
Information-centric networking (ICN) is an emerging network architecture that has the potential to address low-transmission latency and high-reliability requirements in the fifth generation and beyond communication (5G/B5G). In the ICN architectures that use the identifier-locator separation mode, a name resolution system (NRS) is an important infrastructure for managing and maintaining the mappings between identifiers and locators. To meet the demands of time-sensitive applications, researchers have developed a distributed local NRS that can provide name resolution service within deterministic latency, which means it can respond to a name resolution request within a latency upper bound. However, processing name resolution requests only locally cannot take full advantage of the potential of the distributed local NRS. In this paper, we propose a name resolution approach, called adjacency-information-entropy-based cooperative name resolution (ACNR). In ACNR, when a name resolution node receives a name resolution request from a user, it can use neighboring name resolution nodes to respond to this request in a parallel processing manner. For this purpose, ACNR uses the information entropy  
severely limits the breakthrough of IP architecture in terms of transmission performance, scalability, security, and mobility support [7; 8]. Therefore, using the existing IP architecture directly for 5G/B5G will bring bottlenecks to performance breakthroughs. Information-centric networking (ICN) [9; 10; 11] has emerged as a new network architecture dedicated to improving the performance of the network. Compared with IP architecture, ICN uses an information-centric communication model that enables the separation of content from its server location. ICN can take full advantage of the potential capabilities of the network. The ICN network devices have storage capabilities that can cache content replicas and effectively decouple the interaction between content senders and receivers. ICN also brings up several characteristics such as mobility support, built-in multicast delivery, and inherent security [12], allowing users to obtain content simply, efficiently, and safely. These new characteristics mean that ICN has the potential to provide better network service quality in 5G/B5G networks and bring ICN to widespread attention. According to the mode of routing and forwarding, ICN architectures can be mainly classified into two categories. One is the identifier-based routing mode, which uses hierarchical content identifiers and aggregates routing information and packet forwarding are according to the hierarchical characteristic, such as content-centric network (CCN) [13] and named data networking (NDN) [14]. The other is the identifier-locator separation mode, in which the identifier and locator are separated into two different namespaces. Users first obtain the locator corresponding to the identifier in the network and then route the data according to the locator. Such ICN architectures include data-oriented network architecture (DONA) [15], MobilityFirst (MF) [16], publish-subscribe internet routing paradigm (PSIRP) [17], network of information (NetInf) [18], and on-site, elastic, autonomous network (SEANet) [11]. The identifier-locator separation mode has gained wide acceptance due to its better scalability and better compatibility with existing IP architecture. Name resolution system (NRS) is an important infrastructure that provides storage and name resolution services for identifier and locator mapping pair in the identifier-locator separation mode. Content delivery cannot be achieved unless the name resolution process is completed. Every ICN architecture provides its implementation of NRS. DONA and MobilityFirst both manage the mappings of identifiers and locators through global NRS. PSIRP manages information naming, route addressing, and mapping through a hierarchical distributed hash table (DHT).