一种改进的无线通信网络带宽分配方法

An Improved Bandwidth Allocation Algorithm in Wireless Networks

无线通信网络中,为了实现动态、公平的带宽分配,满足用户需求,提出了一种基于令牌桶的改进带宽分配算法。该算法将令牌桶划分为和用户数相对应的虚拟分令牌桶,并且在令牌桶后加入了分漏桶来对用户占用的带宽进行二次分配,算法设定了用户优先级和用户权值,优先级可区分用户的重要程度,依据用户权值,普通用户按占用比例为重要用户贡献带宽。仿真结果表明,改进后的算法可有效提高无线通信网络的吞吐量,算法可以保证普通用户公平地获得带宽资源,同时可以满足重要用户的特殊需求。

In order to allocate the bandwidth to satisfy consumer＇ s requirement dynamically and equitably in a wireless communication network, an improved bandwidth allocation algorithm based on the typical token bucket is proposed. In this algorithm the token buckets are divided into virtual sub-token buckets corresponding to the number of the consumers. Furthermore, the leaky buckets are added behind the token bucket to reallocate the bandwidth occupied by consumers. The consumer priority and weight are also set. The simulation results show that the improved algorithm can effectively enhance the throughput of wireless communication network. Not only the common consumers can equitably achieve the bandwidthresource, but also the special requirement of the important consumers can be satisfied.