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Please use this identifier to cite or link to this item:
http://hdl.handle.net/2074/2054
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| Title: | QoS based scheduling for incorporating variable rate coded voice in Bluetooth |
| Authors: | Chawla, S
Saran, H
Singh, M |
| Keywords: | low-cost indoor pico-cellular wireless
time division duplex
voice activity detection
variable rate voice codecs
QoS based scheduling |
| Issue Date: | 2001 |
| Citation: | Communications, ICC IEEE International Conference on, 4, 1232 - 1237p. |
| Abstract: | Bluetooth is an emerging standard low-cost indoor pico-cellular wireless systems. It is a master driven time division duplex (TDD) system. Real time services such as voice are given 64 kbps bandwidth in Bluetooth. However most other wireless networks use compressed voice, which requires much lesser bandwidth, leading to a substantial increase in system capacity. Bandwidth can be further conserved by using voice activity detection (VAD) techniques and variable rate voice codecs. We propose and analyse modifications to be made to Bluetooth for incorporating variable rate coded voice. Current mechanisms in Bluetooth use synchronous channels with fixed slot allocation for voice and a best effort service for data. We propose and study two scheduling strategies which optimise bandwidth consumption by using variable rate coded voice. In the first scheme, adaptive TSCO scheduling, we modify the conventional scheduling policy to change the time period of scheduling a voice channel depending upo... |
| URI: | http://eprint.iitd.ac.in/dspace/handle/2074/2054 |
| Appears in Collections: | Computer Science and Engineering
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| chawlabas2001.pdf | | 58Kb | Adobe PDF | View/Open |
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