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초록
The 2.4 GHz band of the IEEE 802.15.4 specifies low rate transmission of 250 kbps. Because of the low bandwidth, it is not easy to implement Voice over Sensor Networks (VoSN) even peer to peer voice communication. In this paper, we implement VoSN using non beacon-enabled mode to achieve high utilization of bandwidth. As a result, peer to peer full-duplex voice communication in the long distance and four users to four users (4-to-4) full-duplex voice communication in star topology show very low packet loss rate. With these results, we explain the cause of packet loss by analyzing received and transmitted voice packets between voice nodes and a coordinator.
키워드
Bandwidth capacity; CSMA/CA; IEEE 802.15.4; Voice communication; Voice over Sensor Networks (VoSN); 2.4 GHz-band; Bandwidth capacity; CSMA/CA; Full-duplex; IEEE 802.15.4; Low rates; Low-bandwidth; Packet loss rates; Peer to peer; Star topology; Voice packets; Bandwidth; Electric network topology; Sensor networks; Speech communication; Standards; Telecommunication systems
- 제목
- Performances of IEEE 802.15.4 unslotted CSMA-CA for voice communications
- 저자
- Song, Hae Yeon; Cho, Sung Ho
- 발행일
- 2011-10
- 유형
- Conference Paper
- 저널명
- 17th Asia-Pacific Conference on Communications, APCC 2011
- 페이지
- 151 ~ 156