Solution to the fairness of subscribers with different bandwidth
一种不同租借带宽用户公平性解决方法

To solve the problem that subscribers with different bandwidths obtain fair bandwidth in shared uplink, a method called multi-thresholds Random Early Detection (RED) queue was proposed. It set a RED maximum threshold for each subscriber who may have different connecting bandwidths. In the same time, it measured the real bandwidth obtained by each subscriber and adjusted the RED maximum threshold values accordingly. Therefore, the packet loss rate for each subscriber can be controlled and their actual throughput can also be adjusted in proportion to their connecting bandwidth. Simulation results show that the improved queue inherits advantages of RED and can guarantee the fairness of subscribers.