Utility-Based Resource Allocation for Layer-Encoded IPTV Multicast Service in Wireless Relay Networks
Utility-Based Resource Allocation for Layer-Encoded IPTV Multicast Service in Wireless Relay Networks
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DOI：
10.1109/icc.2011.5963360
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发表时间：
2011-06
期刊：
影响因子：
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通讯作者：
Shi-Sheng Sun;Yi-Chun Chen;W. Liao
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文献类型：
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作者：
Shi-Sheng Sun;Yi-Chun Chen;W. Liao
IPTV组播是住宅用户的一项重要服务。在本文中，我们探讨了如何在中继辅助集中式无线接入网络中使用多播服务将资源分配给不同层编码的IPTV节目。我们考虑两跳中继站的场景，并且 MAC 协议是基于 OFDMA 的，如 IEEE 802.16m 或长期演进高级 (LTE-A) 中。我们通过整数线性规划模型来表述这个问题，并提出一种称为中继多播服务最大效用资源分配（MU-RMS）的启发式算法来解决这个问题。仿真结果表明我们的算法执行高效。我们还表明，我们的性能受到转发策略执行方式的影响。
IPTV multicasting is an important service for residential users. In this paper, we explore how to allocate resources to different layer-encoded IPTV programs using multicast services in relay-assisted centralized wireless access networks. We consider the scenario of two-hop relay stations, and the MAC protocol is OFDMA-based, as in IEEE 802.16m or Long Term Evolution-Advanced (LTE-A). We formulate this problem via an Integer Linear Programming model and propose a heuristic algorithm called Maximum Utility resource allocation for Relayed Multicast Services (MU-RMS) to solve this problem. The simulation results show that our algorithm performs efficiently. We also show that our performance is affected by how the forwarding strategy is performed.