Priority and Network-aware Data Control Scheme to Guarantee the Media Quality in LTE Networks
Keywords:
ARQ, HARQ, LTE, multimedia streaming service.Abstract
For efficient streaming over wireless networks, the LTE (Long Term Evolution) system supports the ARQ (Automatic Repeat reQuest) and HARQ (Hybrid Automatic Repeat reQuest) schemes. However, there is no specification about how to use the ARQ and HARQ parameters in order to guarantee the media quality. To cope with this problem, this paper presents a PNDC (Priority and Network-aware Data Control) scheme that can improve the quality of streaming contents in LTE networks. The proposed scheme controls the
number of HARQ retransmissions in lower MAC layer based on the priority of SVC (Scalable Video Coding) frames. It also dynamically adjusts ARQ retransmission timer in RLC (Radio Link Control) layer according to the adaptive ARQ and HARQ interworking. The experimental result shows that the proposed scheme can significantly improve the media quality.
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