QoS-aware resource allocation for multicast service over vehicular networks

Hao Zhou, Xiaoyan Wang, Zhi Liu, Xiaoming Zhao, Yusheng Ji, S. Yamada
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引用次数: 12

Abstract

Quality of service (QoS) constrained multicast service over vehicular networks has considerable benefit for both road safety and entertainment, while the resource allocation problem of it is challenging due to the high mobility of vehicles. In this paper, we manage the vehicle mobility by dividing one scheduling round into multiple segments, and investigate the resource allocation problem to answer the questions of which modulation and coding scheme (MCS) should be adopted for each flow in each segment, and how to schedule the radio resources among all the flows. We consider two kinds of multicast services. For the multicast service to cover all the recipients, we formulate the problem as a resource scheduling problem with fixed MCS profile, and propose a k-commodity packing based approximation algorithm to solve it with low complexity. For the multicast service with adaptive recipients, we notice that the number of valid MCS profiles for each flow is limited, and propose a heuristic algorithm to search for proper MCS profile assignments. The simulation results verify the efficiency of the proposed scheme.
基于qos的车载组播服务资源分配
基于服务质量(QoS)约束的车联网多播服务对道路安全和娱乐都有很大的好处,但由于车辆的高机动性,它的资源分配问题具有挑战性。本文采用将一个调度轮划分为多个调度段的方法对车辆的移动性进行管理,并对资源分配问题进行研究,以回答每个调度段中的每个流应该采用哪种调制和编码方案(MCS)以及如何在所有流之间调度无线资源的问题。我们考虑了两种组播服务。对于覆盖所有接收方的组播服务,我们将该问题表述为具有固定MCS轮廓的资源调度问题,并提出了一种基于k-商品包装的近似算法,以较低的复杂度解决该问题。对于具有自适应接收方的组播服务,我们注意到每个流的有效MCS配置文件数量有限,并提出了一种启发式算法来搜索合适的MCS配置文件分配。仿真结果验证了该方案的有效性。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
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