Earticle

초록

영어

The construction of a wireless multimedia ad-hoc network needs to go across the mixed environment with the indoor, the wall-penetration, and the outdoor condition. This paper presents our contribution to address the system design aspects of a multimedia-enabled network based on IEEE 802.11g ad-hoc mode. There are distinct differences between indoor and outdoor environment and penetrating the walls stressed the system limit of the 802.11g ad-hoc mode. Therefore, routing decisions should be made intelligently with the environmental respect to maximize the bandwidth support on the end-to-end paths. By investigating the experimental results of the average throughput with the 802.11g adhoc mode, we have collected the different performance characteristics among the indoor, the wall-penetration and the outdoor environment. Via the experiments and analyses, we have observed that the ad-hoc mode had the worst performance within 5 meters in indoor environments. In outdoor environments, TCP seemed to favor either short distance (e.g., 5 meters) or long distance (e.g., 25 meters). On the other hand, the best performance UDP has achieved with the distance of 10 meters. When the wall-enetration occurs, it is important that the routing nodes in the building edge areas are placed close-by within 5 meters.
Given the solid evidences from the baseline experiments, we have embedded the heuristic algorithms into the routing decisions. We have thus simulated a large area of 300 meters by 300 meters with hundreds of routing nodes. After investigating over 100 (randomlygenerated) topology scenarios, the performance results indicate that our proposed scheme produces the higher-bandwidth paths for most of the cases. Even in the less-dense cases, our proposed schemes still can find the better paths with bandwidth about 30% higher than the conventional methods.

목차

Abstract
 1. Introduction
 2. Background and Related work
 3. Baseline Experiments
  3.1 Indoor without obstructions
  3.2 Outdoor without obstructions
  3.3 Penetrating wall
 4. Experimental Results and Analysis
  4.1 Indoor without Obstructions
  4.2 Outdoor without Obstructions
  4.3 Penetrating wall
 5. Proposed Schemes and Protocols
 6. Large-Scale Simulations
 7. Conclusion
 References

저자

• Chung-Wei Lee [ Department of CS, University of Illinois, Springfield, IL, USA ]
• Jonathan C.L. Liu [ CISE Department, University of Florida, Gainesville, FL, USA ]
• Kun Chen [ CISE Department, University of Florida, Gainesville, FL, USA ]
• Yu-Chee Tseng [ College of Computer Science, National Chiao-Tung University, Hsin-Chu, Taiwan ]
• S.P. Kuo [ College of Computer Science, National Chiao-Tung University, Hsin-Chu, Taiwan ]

참고문헌

발행기관

간행물

표지보기 관심저널 등록

• 간행물명

  International Journal of Security and Its Applications

• 간기

  격월간

• pISSN

  1738-9976

• 수록기간

  2008~2016

• 등재여부

  SCOPUS

• 십진분류

  KDC 505 DDC 605