Design And Implementation Of Multi-path Adaptive Scheduling Mechanism For Smart Integration Identifier Networks

With the increasing development of the Internet in financial and communication,the requirement of data packet transmission with robust security and high bandwidth ability is strongly increased.The single route transmission mechanism hardly meets the requirement above.The foundation of cooperative existing of several heterogeneous networks is laid by the proposal of Smart Integration Identifier Networks that multipath transmission provides the possibility for the realization of robust security and high bandwidth.The dispatching of the packet is an important part of the multipath transmission.There exists the risk of wiretapping in high bandwidth dispatching which allocates path by flow granularity.And the robust security dispatching which allocates path by packet granularity results in the disorder problem and the collapse of bandwidth.At present,the dispatching mechanism does not consider the security and high bandwidth of packet transmission.Thus,this paper proposes an adaptive scheduling mechanism for multi-path transmission for Smart Integration Identifier Networks to enhance robust security and high bandwidth.Firstly,focusing on the multipath robust safety transmission of the data packets,this paper designs safe dispatching and encrypt transmission algorithm to realize adaptive safe dispatching.Specifically,the adaptive security dispatching algorithm transmits all packets through multipath across protocols according to packet granularity to ensure the diversity of packet transmission path protocols and reduce the probability for packets to be stolen.The transmission encryption algorithm generates the obfuscation permutation matrix through the S-box,and obfuscates the key fields,e.g.,the serial number of the packet,based on this matrix.It prevents the attacker from reconstructing the packet in order.Then,the difficulty of cracking the semantic content of the packet is increased.Through the cooperation of the algorithms above,the ability of transmission security against eavesdropping is improved.Secondly,for multipath high bandwidth packets transmission,this paper designs a path number selection algorithm,adaptive packet granularity dispatching algorithm and network state band awareness method.Specifically,the out-of-order problem of packet receiver which affects bandwidth aggregation in the multipath transmission is analyzed first.Secondly,the time delay and throughput of each transmission path are sensed by the network state band sensing method periodically and in real-time.The path number selection algorithm periodically selects the path number of multipath transmission based on the perceived delay parameters.The adaptive packet granularity dispatching algorithm is based on the perceptual delay and throughput parameters.It periodically determines the number of packets for each path selected.This algorithm can work together to alleviate the out-of-order problem of multipath packet transmission and improve the transmission bandwidth.Finally,the multi-path transmission adaptive scheduling mechanism was realized by the combination of algorithms above.And a prototype system was built based on the programmable data plane.Additionally,the functional verification and performance evaluation of the mechanism and system were carried out.The results show that in the aspect of functional test,the multi-path cross-protocol forwarding function of the system is verified.And the anti-eavesdropping ability of the proposed mechanism is verified by simulating the attacker’s eavesdropping on the network path.In the aspect of performance test,compared with the traditional polling mechanism,the bandwidth of the proposed mechanism is increased by 75%,the retransmission rate is reduced by 42%,and the rate of out-of-order is reduced by 47%.In addition,the bandwidth of the traditional mechanism drops sharply which is difficult to recover when the network path is interrupted resulting from an emergency.However,after a short fluctuation,the performance recovers to a level which is close to the level before the interruption,by the proposed mechanism.