MSC中基于SDN的拓扑感知RLNC重传方案

doi:10.12305/j.issn.1001-506X.2022.04.38

Abstract

Abstract:

In order to apply the network topology information in the small cell to the retransmission process of network coding, thereby effectively reducing the number of retransmissions and increasing the system throughput, a topology-aware random linear network coding (RLNC) retransmission scheme software defined network (SDN)-based in mobile small cell (MSC) (TRRS) is proposed. First, in order to collect network topology information, design the SDN controller port device mapping table. Next, select the best coded packet for retransmission according to the topology information. Finally, use the TRRS algorithm to embed the network topology information in the code retransmission process. The simulation results show that, compared with the existing SDN and network coding protocol, the TRRS scheme the number of retransmissions and increases the flexibility and throughput of the network.

Key words: software defined network (SDN), network coding (NC), retransmission, topology-aware

CLC Number:

TP393

Yukun YAO, Lidan REN, Zhi REN, Xin FENG, Wenzheng DU. Topology-aware RLNC retransmission scheme based on SDN in MSC[J]. Systems Engineering and Electronics, 2022, 44(4): 1393-1400.

Figures/Tables 10

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References 30

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参数	符号	值
载波带宽/M	B	20
传输可靠性	σ	1－10^－3
一代大小	G	{10, 20, 30, 32, 40, 50, 60, 70, 80, 90, 100}
有限域大小	q	2⁸
数据包长度/bytes	l	1 400
丢包率	ε	{1, 2, 4, 8, 16}×10^－2
仿真时间/m	t_s	500
传输速率/Mbps	v	11.76
移动UEs数量	m	{5, 10, 15, 20}

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Topology-aware RLNC retransmission scheme based on SDN in MSC

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