Design and Evaluation of a Dynamic Continuous Media Streaming Supporting Method on the Basis of Logical Grid Hierarchy for MANETs

Abstract

As wireless connectivity is integrated into many handheld devices, streaming multimedia content among mobile ad-hoc peers is becoming a popular application. In this paper, we propose a dynamic service replication algorithm for providing guaranteed continuous streaming services to all nodes in mobile ad-hoc networks (MANETs). First, a MANET is comprised of logical grid hierarchy, and a streaming service is replicated to a lower server region of the logical grid hierarchy by considering the link availability between a mobile node and the streaming server within a server region or the popularity of the streaming service. We evaluate analytically the performance of the proposed algorithm, and compared with that of existing Qin's algorithm. Evaluation results show that our algorithm can achieve better streaming performance than Qin's algorithm. Therefore, the proposed algorithm not only improves the sharing availability of replicated streaming services but also controls efficiently the number of streaming service replications.

Challenges and techniques for video streaming over mobile ad hoc networks

“…This can be a realistic assumption for certain scenarios, but the imposed requirements on the mobility patterns clearly restrict the applicability domain of these techniques (e.g., [66] only targets vehicle networks). There are also a few techniques (e.g., [60]) assuming random mobility among nodes. Since nodes in the real world rarely move in random patterns, there is a question on how these solutions will perform in real-world scenarios.…”

“…For overlay and routing techniques, a common assumption is that of nodes being aware of their own or other nodes' location (e.g., [60,61,104,122]). Since these techniques usually rely on GPS technology, it is important to carefully consider how position inaccuracy impacts performance.…”

“…propose a grid-based service placement algorithm [60]. They model the network as a grid, which is divided into several levels.…”