基于节点时隙发送数据概率可用带宽估计

为提高链路可用带宽估计值的精确度,提出了一种基于Ad Hoc网络的可用带宽算法IABE.IABE利用节点监听信道,通过进一步修正收发节点监听信道不同步问题和数据包碰撞问题,得出链路带宽的计算公式.该方法中,在已知节点时隙发送数据概率的前提下,可以获知收发节点监听信道同步概率和数据包碰撞概率.链路双方监听信道同步概率能够提升单边节点监听信道所得带宽利用率值的精确度,数据包碰撞概率能够弥补数据包碰撞引起的额外带宽消耗.在NS仿真平台上建立不同实验场景验证IABE的性能.经仿真结果分析,IABE较其他同类算法具有更高的精确度.

Available bandwidth estimation based on node time slot transmitting data probability

In order to improve the available bandwidth estimation accuracy of link, a kind of available bandwidth algorithm IABE based on Ad Hoc is proposed. IABE uses the node listening channel, gets the computational formu- la of available bandwidth of link through further modifying transceiver listening channel de-synchrony and packet collision problem. In the algorithm, under the precondition of known the node time slot transmitting data probabili- ty, both side synchronization probability and data packet collision probability could be calculated. The synchroniza- tion probability of both sides improves the accuracy of the channel busyness ratio listened by single side. The data collision probability is able to compensate the additional bandwidth consumption cased by data collision. At NS sim- ulation platform, different experimental scenes are established to verify IABE performance. The simulation results verify that IABE is more accurate than other similar algorithms.