QOS Improving for Voice Streaming over Wireless Ad-hoc Networks using an Adaptive Playout Adjustment Algorithm
محل انتشار: نوزدهمین کنفرانس مهندسی برق ایران
سال انتشار: 1390
نوع سند: مقاله کنفرانسی
زبان: انگلیسی
مشاهده: 1,106
فایل این مقاله در 6 صفحه با فرمت PDF قابل دریافت می باشد
- صدور گواهی نمایه سازی
- من نویسنده این مقاله هستم
استخراج به نرم افزارهای پژوهشی:
شناسه ملی سند علمی:
ICEE19_557
تاریخ نمایه سازی: 14 مرداد 1391
چکیده مقاله:
Providing a service with good quality for transmission and playing real-time voice conversations (voice streaming) over wireless ad-hoc networks is always a big challenge. Buffering and adjusting the playout time of packets is one of the methods used to overcome this challenge which can be deployed in receiver side. In this paper, a new adaptive playout adjustment algorithm to stream the voice conversations over wireless ad-hoc networks is proposed. This algorithm always tries to be aware of network's conditions, adapts itself with these conditions and adjusts the playout time of voice packets as good as possible. So, not only most of the packets must be received before their playout time which is scheduled in receiver, but also the playout time must not be too long as much that has a bad effect on the interactivity between sender and receiver. The main features of the presented method are: First, adjusting the threshold adaptively with respect to variant conditions of networks, in order to determine the state of system. Second, calculating the mean network jitter and especially alpha parameter dynamically based on the current conditions of networks, in order to calculate the playout delay of current packet. Third, being optimistic about the future state of networks and not using the history of delay, in order to calculate the mean network delay. The results of simulation show that the proposed algorithm adapts itself with the network's dynamic conditions and adjusts the playout delay of voice packets better than the other algorithms. other algorithms
کلیدواژه ها:
Wireless mobile ad-hoc Networks ، Voice streaming ، Adaptive playout algorithm ، Quality of service ، Multimedia
نویسندگان
Maral Salehi
Department of Computer Engineering, Amirkabir University of Technology, Tehran, Iran
مراجع و منابع این مقاله:
لیست زیر مراجع و منابع استفاده شده در این مقاله را نمایش می دهد. این مراجع به صورت کاملا ماشینی و بر اساس هوش مصنوعی استخراج شده اند و لذا ممکن است دارای اشکالاتی باشند که به مرور زمان دقت استخراج این محتوا افزایش می یابد. مراجعی که مقالات مربوط به آنها در سیویلیکا نمایه شده و پیدا شده اند، به خود مقاله لینک شده اند :