IEEE802.11b屋外無線システムによるストリーミング配信におけるICMP Echo成功率とRTTを指標とした動的レート制御方式の評価

概要

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In 2.4 GHz inter-building wireless networks, available throughput temporally changes, which could result in the deterioration of the quality of video streaming. The authors proposed a source bit rate control scheme using ICMP Echo success rate and RTTs. In this paper, the performance evaluation of the proposed scheme and fixed source bit rate scheme is made for the inter-building wireless system.The scheme was installed in Kogakuin University's Shinjuku building and the No. 55 building on the Okubo campus of Waseda University. The experimental results show that the proposed scheme achieves a higher than fixed source bit rate of one layer with a lower packet loss rate. To compensate for the remaining packet loss of the proposed scheme, FEC was applied. The subjective quality for received video streaming of the proposed scheme and the fixed source bit rate was evaluated. The results show that the proposed scheme of FEC is 0.3 higher than the fixed source bit rate of one layer and 1.2 higher than the fixed source bit rate of two layers.
2009-10-30