利用比例积分微分(PID)控制理论控制IP语音(VoIP)数据流带宽需求和用户体验(QoE)之间的平衡关系,并将该信息纳入带宽再分配模型中,提出一个基于QoE的带宽分配机制QBAV(QoE-based bandwidth allocation mechanism for VoIP application)...利用比例积分微分(PID)控制理论控制IP语音(VoIP)数据流带宽需求和用户体验(QoE)之间的平衡关系,并将该信息纳入带宽再分配模型中,提出一个基于QoE的带宽分配机制QBAV(QoE-based bandwidth allocation mechanism for VoIP application),它在满足用户期望QoE的同时兼顾带宽分配的公平性。理论证明该算法满足非线性问题最优化约束条件,所分配带宽满足目标函数全局收敛。仿真结果表明,该算法分别以低于传统NRG算法9%及最新FC-MDI-S算法15%的带宽满足了90%以上用户的期望QoE,避免了现有带宽分配机制针对小部分高优先级数据流的弊端,提高了VoIP业务的整体性能及网络利用效率。展开更多
In non-dedicated cooperative relay networks, each node is autonomous and selfish in nature, and thus spontaneous cooperation among nodes is challenged. To stimulate the selfish node to participate in cooperation, a pr...In non-dedicated cooperative relay networks, each node is autonomous and selfish in nature, and thus spontaneous cooperation among nodes is challenged. To stimulate the selfish node to participate in cooperation, a pricing-based cooperation engine using game theory was designed. Firstly, the feasible regions of the charge price and reimbursement price were deduced. Then, the non-cooperative and cooperative games were adopted to analyze the amount of bandwidth that initiating cooperation node(ICN) forwards data through participating cooperation node(PCN) and the amount of bandwidth that PCN helps ICN to relay data. Meanwhile, the Nash equilibrium solutions of cooperation bandwidth allocations(CBAs) were obtained through geometrical interpretation. Secondly, a pricing-based cooperation engine was proposed and a cooperative communication system model with cooperation engines was depicted. Finally, an algorithm based on game theory was proposed to realize the cooperation engine. The simulation results demonstrate that, compared with the system without pricing-based incentive, the proposed system can significantly improve the ICN's metric measured by bit-per-Joule and increase the PCN's revenue.展开更多
文摘利用比例积分微分(PID)控制理论控制IP语音(VoIP)数据流带宽需求和用户体验(QoE)之间的平衡关系,并将该信息纳入带宽再分配模型中,提出一个基于QoE的带宽分配机制QBAV(QoE-based bandwidth allocation mechanism for VoIP application),它在满足用户期望QoE的同时兼顾带宽分配的公平性。理论证明该算法满足非线性问题最优化约束条件,所分配带宽满足目标函数全局收敛。仿真结果表明,该算法分别以低于传统NRG算法9%及最新FC-MDI-S算法15%的带宽满足了90%以上用户的期望QoE,避免了现有带宽分配机制针对小部分高优先级数据流的弊端,提高了VoIP业务的整体性能及网络利用效率。
基金Project(61201143)supported by the National Natural Science Foundation of China
文摘In non-dedicated cooperative relay networks, each node is autonomous and selfish in nature, and thus spontaneous cooperation among nodes is challenged. To stimulate the selfish node to participate in cooperation, a pricing-based cooperation engine using game theory was designed. Firstly, the feasible regions of the charge price and reimbursement price were deduced. Then, the non-cooperative and cooperative games were adopted to analyze the amount of bandwidth that initiating cooperation node(ICN) forwards data through participating cooperation node(PCN) and the amount of bandwidth that PCN helps ICN to relay data. Meanwhile, the Nash equilibrium solutions of cooperation bandwidth allocations(CBAs) were obtained through geometrical interpretation. Secondly, a pricing-based cooperation engine was proposed and a cooperative communication system model with cooperation engines was depicted. Finally, an algorithm based on game theory was proposed to realize the cooperation engine. The simulation results demonstrate that, compared with the system without pricing-based incentive, the proposed system can significantly improve the ICN's metric measured by bit-per-Joule and increase the PCN's revenue.
