A Low-Jitter Wireless Transmission Based on Buffer Management in Coding-Aware Routing

Cunbo Lu and Liangtian Wan
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Cunbo Lu: School of Communication Engineering, Xidian University, Xi'an 710071, Shanxi, China
Liangtian Wan: Department of Information and Communication Systems, Hohai University, Changzhou 213022, Jiangsu, China

Future Internet, 2015, vol. 7, issue 3, 1-22

Abstract: It is significant to reduce packet jitter for real-time applications in a wireless network. Existing coding-aware routing algorithms use the opportunistic network coding (ONC) scheme in a packet coding algorithm. The ONC scheme never delays packets to wait for the arrival of a future coding opportunity. The loss of some potential coding opportunities may degrade the contribution of network coding to jitter performance. In addition, most of the existing coding-aware routing algorithms assume that all flows participating in the network have equal rate. This is unrealistic, since multi-rate environments often appear. To overcome the above problem and expand coding-aware routing to multi-rate scenarios, from the view of data transmission, we present a low-jitter wireless transmission algorithm based on buffer management (BLJCAR), which decides packets in coding node according to the queue-length based threshold policy instead of the regular ONC policy as used in existing coding-aware routing algorithms. BLJCAR is a unified framework to merge the single rate case and multiple rate case. Simulations results show that the BLJCAR algorithm embedded in coding-aware routing outperforms the traditional ONC policy in terms of jitter, packet delivery delay, packet loss ratio and network throughput in network congestion in any traffic rates.

Keywords: coding aware routing; delay jitter; buffer management; unified framework; multiple rates (search for similar items in EconPapers)
JEL-codes: O3 (search for similar items in EconPapers)
Date: 2015
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