在机会网络中,节点信息传输成功率和路由开销是衡量网络性能的主要指标,提高传输成功率能够有效降低数据的丢包率,减少路由开销能够减缓节点消耗和死亡,保证网络性能。但是由于机会网络算法中,基于洪泛策略的算法会造成节点过高的路由开...在机会网络中,节点信息传输成功率和路由开销是衡量网络性能的主要指标,提高传输成功率能够有效降低数据的丢包率,减少路由开销能够减缓节点消耗和死亡,保证网络性能。但是由于机会网络算法中,基于洪泛策略的算法会造成节点过高的路由开销,通过对机会网络中节点及其邻居数据包发送和接收过程进行分析,建立了有效数据预测转发路由算法(effective data prediction transmission routing algorithm,EDPT)。该算法通过模型分析,建立了合理的数据包发送和接收机制;通过仿真实验,并与机会网络中spray and wait和binary spray and wait比较,该算法提升了网络的平均传输成功率,减少了节点的平均路由开销。展开更多
Nowadays, the major part and most standard networks usually used in several applications are Wireless Sensor Networks (WSNs). It consists of different nodes which communicate each other for data transmission. There is...Nowadays, the major part and most standard networks usually used in several applications are Wireless Sensor Networks (WSNs). It consists of different nodes which communicate each other for data transmission. There is no access point to control the nodes in the network. This makes the network to undergo severe attacks from both passive and active devices. Due to this attack, the network undergoes downgrade performance. To overcome these attacks, security based routing protocol is proposed with the security based wormhole detection scheme. This scheme comprises of two phases. In this approach, the detection of wormhole attacks is deployed for having correct balance between safe route and stability. Also, to ensure packets integrity cryptographic scheme is used as well as authenticity while travelling from source to destination nodes. By extensive simulation, the proposed scheme achieves enhanced performance of packet delivery ratio, end to end delay, throughput and overhead than the existing schemes.展开更多
文摘在机会网络中,节点信息传输成功率和路由开销是衡量网络性能的主要指标,提高传输成功率能够有效降低数据的丢包率,减少路由开销能够减缓节点消耗和死亡,保证网络性能。但是由于机会网络算法中,基于洪泛策略的算法会造成节点过高的路由开销,通过对机会网络中节点及其邻居数据包发送和接收过程进行分析,建立了有效数据预测转发路由算法(effective data prediction transmission routing algorithm,EDPT)。该算法通过模型分析,建立了合理的数据包发送和接收机制;通过仿真实验,并与机会网络中spray and wait和binary spray and wait比较,该算法提升了网络的平均传输成功率,减少了节点的平均路由开销。
文摘Nowadays, the major part and most standard networks usually used in several applications are Wireless Sensor Networks (WSNs). It consists of different nodes which communicate each other for data transmission. There is no access point to control the nodes in the network. This makes the network to undergo severe attacks from both passive and active devices. Due to this attack, the network undergoes downgrade performance. To overcome these attacks, security based routing protocol is proposed with the security based wormhole detection scheme. This scheme comprises of two phases. In this approach, the detection of wormhole attacks is deployed for having correct balance between safe route and stability. Also, to ensure packets integrity cryptographic scheme is used as well as authenticity while travelling from source to destination nodes. By extensive simulation, the proposed scheme achieves enhanced performance of packet delivery ratio, end to end delay, throughput and overhead than the existing schemes.
