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Multicast Aggregation Method for ICN-Based Live Streaming by Selected Bitrate Synchronization
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DOI：10.23919/transcom.2025CEP0013.png)
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Abstract
En 中文
For live streaming, all users require the same content simultaneously. In this situation, multicast communication is expected to be easily realized in information centric network (ICN). Our careful evaluation results show that multicast communications surprisingly cannot be easily realized in Adaptive Bit-Rate (ABR) over ICN as it is. Root cause of this difficulty is that complete synchronization both in ABR bitrate selection behavior and also TCP congestion control behavior is required for realizing multicast communication, and this complete synchronization in both layers is quite difficult. Our stepwise improvements finally reveal that strong cooperation of the ABR algorithm and the TCP congestion control which enforces complete synchronization in these two layers, is significantly important for realizing multicast communications. As the final result of step-wise improvement, in this paper, we propose a novel traffic aggregation scheme, called Forced ABR/Congestion-Control-Algorithm (CCA) initialization (F-ABR-CCA-init) that synchronizes the segment download timing of the streaming users. Our evaluation results by computer simulations show that F-ABR-CCA-init substantially improves QoE by increasing selected bitrate of users owing to multicasting of ICN. Furthermore, we also reveal that F-ABR-CCA-init achieves higher QoE performance under several environments with multiple live streaming users in different bottleneck-bandwidths with different congestion severity.
Keywords:
ICN
NDN
live streaming
multicast
QoE
Journal
I
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193
Citations:
1.2K