| Si Jingjing(司菁菁),Zhuang Bojin,Cai Anni.[J].高技术通讯(英文),2011,17(1):86~90 |
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| Hierarchical multicast with inter-layer random network coding |
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| DOI： |
| 中文关键词: |
| 英文关键词: network coding, inter-session, inter-layer hierarchical multicast (IHM), layered source coding |
| 基金项目: |
| Author Name | Affiliation | | Si Jingjing(司菁菁) | | | Zhuang Bojin | | | Cai Anni | |
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| 中文摘要: |
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| 英文摘要: |
| To maximize the aggregate throughput achieved in heterogeneous networks, this paper investigates inter-session network coding for the distribution of layered source data. We define inter-layer hierarchical random linear network codes (IHRLNC), which not only take the flexibility of inter-session network coding for layer mixing but also consider the strict priority inherent in the layered source data. Furthermore, we propose the inter-layer hierarchical multicast (IHM), which performs IHRLNC in the network such that each sink can recover some source layers according to its individual capacity. To determine the optimal type of IHRLNC that should be performed on each edge in IHM, we formulate an optimization problem based on 0-1 integer linear programming, and propose a heuristic approach to approximate the optimal solution in polynomial time. Simulation results show that the proposed IHM can achieve throughput gains over the layered multicast schemes. |
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