An Efficient Uplink Scheduling Algorithm with Variable Grant-Interval for VoIP Service in BWA Systems
نویسندگان
چکیده
This letter proposes an efficient uplink scheduling algorithm for the voice over Internet protocol (VoIP) service with variable frame-duration according to the voice activity in IEEE 802.16e/m systems. The proposed algorithm dynamically changes the grant-interval to save the uplink bandwidth, and it uses the random access scheme when the voice activity changes from silent-period to talk-spurt. Numerical results show that the proposed algorithm can increase the VoIP capacity by 26 percent compared to the conventional extended real-time polling service (ertPS). key words: uplink scheduling algorithm, AMR speech codec, IEEE 802.16e/m system, resource management
منابع مشابه
and Jae - Hyun Kim School of Electrical and Computer Engineering , Ajou University Republic of Korea VoIP
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ورودعنوان ژورنال:
- IEICE Transactions
دوره 91-B شماره
صفحات -
تاریخ انتشار 2008