A Node Virtualization Scheme for Structured Overlay Networks Based on Multiple Different Time Intervals

Abstract

Sensor data which relate to the specific geographical positions, areas, and time are strongly expected in IoT. The author has studied overlay networks to efficiently process interval queries which have specific time intervals and the actual users tend to request. However, unfairness and a concentration of the loads occur for the specific processing computer (node) in the previous method because the density of data or those generators/providers is different from those related values. In this paper, the author proposes the enhanced scheme for structured overlay networks based on multiple different time intervals. The proposed method uses node virtualization to equalize the loads of each real (physical) node. The simulation results showed that the proposed method can increase the fairness of the number of the assigned data among physical nodes.

Fault Tolerant DHT-Based Routing in MANET

“…There exist no explicit and direct solutions to the problem. To the best of author's knowledge, existing DHT-based routing protocols in MANETs [1][2][3][4][5][6][7][8][9][10][11][12][13][14][15][16][17][18] mainly consider routing and resilience of the address spaces used. In other words, existing protocols do not consider network dynamics and associated issues that limit the scope of these protocols in the adversarial environment of MANET.…”

“…DHT provides a scalable way to decouple node location from its identity and facilitate general mapping between them. In the last few years, several DHT-based routing protocols for MANETs have been proposed that eliminate flooding in the route discovery, thus making the network more scalable [1][2][3][4][5][6][7][8][9][10][11][12][13][14][15][16][17][18]. In DHT-based routing protocols, a node is assigned a logical identifier (LID) in addition to its permanent identifier (i.e., MAC/IP address also known as user id, i.e., UID) based on the LIDs of its physical neighbors.…”