Title: Adaptive Bandwidth Sharing for Optimizing QoE of Real-Time Video Show Chinese title

Title: 自适应带宽共享以优化实时视频的QoE

Abstract: The concept of spectrum or bandwidth sharing has gained significant global attention as a means to enhance the efficiency of real-time traffic management in wireless networks. Effective bandwidth sharing enables optimal utilization of available resources, reducing congestion and improving QoE for delay-sensitive applications such as real-time video transmission. In this paper, we propose a novel iterative semi-static bandwidth sharing policy that balances the advantages of both static and dynamic sharing approaches. Our approach minimizes the frequency of coordination between network operators while ensuring efficient resource allocation and meeting the stringent QoE demands of real-time traffic. The proposed policy iteratively optimizes both the spectrum sharing between operators and the resource allocation for individual clients. We establish strong theoretical guarantees for the optimality of the proposed policy and prove that it converges to the optimal static sharing policy irrespective of initial conditions or fluctuations in traffic arrival rates. Additionally, we conduct extensive simulations to evaluate the impact of key system parameters - including step size, hyperperiod length, and arrival process dynamics - on the performance of our policy. Our results demonstrate the effectiveness of the proposed approach in achieving near-optimal bandwidth allocation with reduced overhead, making it a practical solution for real-time wireless applications. Show Chinese abstract

Abstract: 频谱或带宽共享的概念作为提高无线网络实时流量管理效率的一种手段，已经引起了全球的极大关注。有效的带宽共享能够实现资源的最佳利用，减少拥塞，并提升对实时视频传输等延迟敏感型应用的质量体验（QoE）。本文提出了一种新颖的迭代半静态带宽共享策略，该策略平衡了静态和动态共享方法的优点。我们的方法在确保高效资源分配并满足实时流量严格的QoE需求的同时，减少了网络运营商之间的协调频率。该策略迭代优化运营商之间的频谱共享以及单个客户端的资源分配。我们为所提出的策略的最优性建立了强有力的理论保证，并证明无论初始条件如何或流量到达率波动，它都会收敛到最优的静态共享策略。此外，我们进行了广泛的仿真，以评估关键系统参数（包括步长、超周期长度和到达过程动态）对策略性能的影响。结果表明，所提出的方案在降低开销的情况下实现了接近最优的带宽分配，使其成为实时无线应用的实际解决方案。