时延QoS约束下的混合业务带宽补偿算法

Bandwidth compensation algorithm for mixed services under delay quality of service constraint

为简化带宽分配流程,提高带宽资源利用率,提出了一种基于有效带宽和有效容量的带宽补偿算法。针对通信网络中混合业务到达的场景,设计了带宽补偿服务机制,建立了多业务到达、随机补偿服务的网络队列系统并进行分析。模型中,采用不同随机过程的聚合描述混合业务的到达过程,带宽补偿服务过程由基本服务和随机补偿服务组成。研究评估了时延QoS(Quality of service)约束下混合业务的带宽需求,并进一步推导了保障QoS所需的补偿带宽和补偿概率。通过Matlab仿真验证了提出的带宽补偿算法可以保障时延QoS要求,并分析了时延QoS参数、到达过程参数对补偿算法的影响。

In order to simplify the bandwidth allocation process and improve the bandwidth utilization,a bandwidth compensation algorithm is proposed based on effective bandwidth and effective capacity. Aiming at the scene of mixed service arrivals in the communication networks,the bandwidth compensation service mechanism is designed, and the network queuing system with multi-service arrivals and random compensation service is established for analysis. In the model,the arrival process of mixed services is described by the aggregation of different random processes,and the bandwidth compensation service process is composed of basic service and random compensation service. The research evaluates the bandwidth requirements of mixed services under the constraint of QoS(Quality of Service),and further deduces the compensation bandwidth and compensation probability required to guarantee QoS. It is verified by Matlab simulation that the proposed bandwidth compensation algorithm could guarantee the delay QoS requirements,and the influence of delay QoS parameters and arrival process parameters on compensation algorithm is analyzed.