## 1 Introduction  
Mobile Ad hoc Networks (MANETs) possess notable properties such as multi-hop routing, self-configuration, self-healing, self-managing, reliability, and scalability that have drawn the interest of networking sectors [1]. It's a self-configuring wireless network made up of mobile wireless devices. MANET has the advantage of requiring minimal configuration and deploying quickly, making it ideal for emergency situations. Even when nodes are static, routing across wireless mobile networks is a vital issue because of the dynamic behavior of wireless mobile networks' quality. In MANETs, the routing issue is principally concerned with finding an optimal way between the source and the destination node [2, 3]. Without a backbone or fixed infrastructure, MANET instantaneously incorporates a network [4]. Three distinct kinds of routing protocols are widely employed in MANETs: reactive, proactive, and hybrid. Reactive routing protocols don't operate until the source advises for a channel to a destination node. AODV protocol and Dynamic SourceRouting (DSR) are major protocols for this category. Table-driven protocols are employed by proactive routing protocols to maintain accurate route information for each node in the network. The examples include the Destination Sequenced Distance Vector (DSDV) and OLSR [5; 6]. To connect network nodes, the algorithm from the proactive routing protocol class which is recognized as OLSR is utilized. These protocols rely on a routing method that chooses the MPR (Multi Points Relay) technology primarily in order to diminish network traffic load and the route to the objective [7]. Neighborhood sensing, message flooding, topological information, and path computation are the four core OLSR principles. It preserves a topological description of the network for each node and presents a route when applicable. Subsequently, it adopts the MPR solution to minimize control traffic and create the shortest paths (in terms of hops) across all network destinations. Consequently, an MPR set is coupled to each node because each node chooses a subset of the nodes in its neighborhood as its MPR and observes the operations of the neighbors who have labeled themselves as an MPR [8]. Figure 1 depicts the numerous application of OLSR in Wireless Ad-Hoc Networks. The keyword 'OLSR' and 'MANET' when taken into consideration using Vos Viewer software on the Web of Science database, outputs 1147 results which means this number of articles has been available in conjugation with these keywords. The main contributions of this paper are summarized as follows:  
1. The work highlights the role of OLSR in the MANET environment and depicts the research trends of OLSR routing protocol in the MANET environment.
2. The proposed model, namely OCI-OLSR, which operates on principals by lowering the interval value to one second, maximizes packet exchange. Since messages choose more MPR nodes to which control topology packets are relayed, more fresh routes are consequently periodically available in the network. Additionally, the neighbor hold duration is lowered to one sec to intensify overall performance.
3. The execution finding of the proposed scheme OCI-OLSR successfully strengthens the routing mechanism in Ad-hoc Networks when tested and validated on numerous parameters.  
Figure 1: OLSR Protocol in Ad Hoc Networks: Web of Science Core Collection. Data were obtained from www.webofscience.com/wos/woscc accessed on 25 February 2023.  
The structure of the whole work accomplishment is specified as follows. Section 2 reviews the literature and recent trends regarding the role of the OLSR protocol in the MANET environment. Section 3 elaborates on the workflow of the proposed model. Section 4 outlines experimental findings and offers an extensive comparative analysis of the proposed scheme with the existing ones on several parameters. At last, the Conclusion is covered in Section 5.