Mobility-aided adaptive resource reservation schemes in wireless multimedia networks
| Autor: | Jean-Lien C. Wu, Li-Liann Lu, Hung-Huan Liu |
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| Rok vydání: | 2006 |
| Předmět: |
Engineering
General Computer Science Multimedia business.industry Real-time computing Reservation Admission control Blocking (statistics) computer.software_genre Weighting Base station Control and Systems Engineering Bandwidth (computing) Wireless Overhead (computing) Electrical and Electronic Engineering business computer Computer network |
| Zdroj: | Computers & Electrical Engineering. 32:102-117 |
| ISSN: | 0045-7906 |
| DOI: | 10.1016/j.compeleceng.2006.01.014 |
| Popis: | This paper proposes the mobility-aided adaptive resource reservation (MARR) with admission control (AC) to provide better usage of scarce resource in wireless multimedia networks. The area of a cell is divided into: the reservation zone and the non-reservation zone. A target cell is predicted by extrapolating the trajectory of mobile stations (MSs). In order to reduce signaling overhead, bandwidth is reserved only in the target cell as MSs move into the reservation zone and leave the serving base station (BS). The amount of bandwidth to be reserved is dynamically adjusted according to the instantaneous variation of mobility ratio, location, and direction of MSs. Two scenarios of the MARR scheme are investigated by OPNET simulation and compared by considering the mobility ratio threshold in the calculation of the direction weighting. The simulation results show that employing the MARR scheme can indeed reduce connection dropping and blocking probability, and make better bandwidth utilization when appropriate parameters are chosen. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
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