Analytical Comparison of Resource Search Algorithms in Non-DHT Mobile Peer-to-Peer Networks  

作　　者：Ajay Arunachalam Vinayakumar Ravi Moez Krichen Roobaea Alroobaea Jehad Saad Alqurni 

机构地区：[1]Centre for Applied Autonomous Sensor Systems(AASS),Örebro University,Örebro,Sweden [2]Center for Articial Intelligence,Prince Mohammad Bin Fahd University,Khobar,Saudi Arabia [3]Faculty of CSIT,Al-Baha University,Saudi Arabia ReDCAD Laboratory,University of Sfax,Tunisia [4]Department of Computer Science,College of Computers and Information Technology,Taif University,P.O.Box 11099,Taif,21944,Saudi Arabia [5]Department of Education Technologies,College of Education,Imam Abdulrahman Bin Faisal University,Saudi Arabia

出　　处：《Computers, Materials & Continua》2021年第7期983-1001,共19页计算机、材料和连续体（英文）

基　　金：Supporting Project Number(TURSP-2020/36),Taif University,Taif,Saudi Arab。

摘　　要：One of the key challenges in ad-hoc networks is the resource discovery problem.How efciently&quickly the queried resource/object can be resolved in such a highly dynamic self-evolving network is the underlying question?Broadcasting is a basic technique in the Mobile Ad-hoc Networks(MANETs),and it refers to sending a packet from one node to every other node within the transmission range.Flooding is a type of broadcast where the received packet is retransmitted once by every node.The naive ooding technique oods the network with query messages,while the random walk scheme operates by contacting subsets of each node’s neighbors at every step,thereby restricting the search space.Many earlier works have mainly focused on the simulation-based analysis of ooding technique,and its variants,in a wired network scenario.Although,there have been some empirical studies in peer-to-peer(P2P)networks,the analytical results are still lacking,especially in the context of mobile P2P networks.In this article,we mathematically model different widely used existing search techniques,and compare with the proposed improved random walk method,a simple lightweight approach suitable for the non-DHT architecture.We provide analytical expressions to measure the performance of the different ooding-based search techniques,and our proposed technique.We analytically derive 3 relevant key performance measures,i.e.,the avg.number of steps needed to nd a resource,the probability of locating a resource,and the avg.number of messages generated during the entire search process.

关 键 词：Mathematical model MANET P2P networks P2P MANET UNSTRUCTURED search algorithms Peer-to-Peer AD-HOC ooding random walk resource discovery content discovery mobile peer-to-peer broadcast PEER 

分 类 号：TN9[电子电信—信息与通信工程]