搜索结果: 1-12 共查到“计算机科学技术基础学科 Mesh”相关记录12条 . 查询时间(0.078 秒)
认知无线Mesh网络中资源节约的最小信道冲突值组播路由算法
认知无线Mesh网络 组播 频谱分配 粒子群优化
2016/7/27
认知无线Mesh网络中满足QoS约束的多目标优化组播路由问题比单目标优化组播问题更加复杂,为了快速求解认知无线Mesh网络中满足Qos约束的以最小化资源消耗与最小化信道冲突值的多目标优化组播路由问题,提出了一种基于粒子群优化算法的问题求解框架,包括问题描述、粒子编码与粒子初始化、适应度函数、粒子飞行、粒子变异、粒子消环。粒子由表示节点之间连接关系的带权邻接矩阵表示,重新定义了用于粒子飞行的3种运算...
Combined Feature-Driven Richardson-Based Adaptive Mesh Refinement for Unsteady Vortical Flows
Combined Feature-Driven Richardson-Based Adaptive Mesh Unsteady Vortical Flows
2015/7/3
An adaptive mesh refinement strategy that couples feature detection with local error estimation is presented. The strategyfirst selects vortical regions for refinement using feature ...
A CONSERVATIVE MESH-FREE SCHEME AND GENERALIZED FRAMEWORK FOR CONSERVATION LAWS
conservation law advection equation mesh-free scheme fi nite diff erence fi nite volume
2015/7/3
We present a novel mesh-free scheme for solving partial differential equations. We first derive a conservative and stable formulation of mesh-free first derivatives. We then show tha...
Dynamic Mesh Deformation for Adaptive Grid Refinement with Staggered Spectral Difference and Finite Volume Mesh
Dynamic Mesh Deformation Adaptive Grid Staggered Spectral Diff Finite Volume Mesh
2015/7/3
Better computational efficiency and reduced computational cost for high order CFD method are areas of active research. In this study, we investigate the potential of using dynamic deforming mesh ...
Feature-Driven Cartesian Adaptive Mesh Refinement in the Helios Code
Feature-Driven Cartesian Adaptive Mesh Refinement Helios Code
2015/7/3
Feature-detection methods are applied to drive Cartesian-based adaptive mesh renement for improved vortex resolution in aerodynamics owelds. Several approaches such as the Q-criterion, the eigenvalu...
A Combined Quadtree/Delaunay Method for 2D Mesh Generation
mesh delaunay antenna finite element method domain decomposition scientific computing
2014/12/8
Unstructured simplicial mesh is an integral and critical part of many computational electromagnetics methods (CEM) such as the finite element method (FEM) and the boundary element method (BEM). Mesh q...
针对第3版WLAN鉴别基础设施(WAI)协议用于建立WLAN Mesh安全关联时所存在的问题,提出了一种基于改进WAI协议的WLAN Mesh安全关联方案。通过性能对比分析,该方案提高了WLAN Mesh安全关联的性能,特别是降低了认证服务器(AS)的负载。为了适用于可信计算环境,继而在该方案的基础上提出了一种可信计算环境下的WLAN Mesh安全关联方案。此外,利用串空间模型(SSM)证明了这2...
为了合理利用多信道来提高无线网络吞吐量,针对基于802.11标准无线mesh网的业务特点,提出了基于分组管理的分布式多信道分配算法。该算法将节点接口分为回程接口与转发接口,并使回程接口分配到在干扰区域内干扰值尽可能小的信道。仿真实验结果表明,该算法可以减少区域干扰,并可充分利用信道的多样性和得到较高的网络吞吐量。
无线Mesh网中具有QoS保障的MAC算法
无线Mesh网络 接入控制 服务质量
2010/4/2
在无线Mesh 网络中,针对短期优先级问题提出一种具有QoS 保障的接入控制算法。当网络负载较重时,暂停低优先级业务的传
输,给高优先级业务更多的接入信道的机会,为高优先级业务提供QoS 保障。仿真结果表明,与IEEE802.11e EDCA 相比,该算法可减小
实时性业务的时延,提高系统吞吐量。
邻居认证的Mesh网络安全多路径路由协议
多路径 节点分离 认证
2009/7/14
Mesh网络节点的移动性和数据传输的多跳性,使得路由协议的质量以及安全性成为衡量Mesh网络性能的关键因素,迫切需要一种能适应网络拓扑变化,高效、安全的路由协议。而目前针对Mesh网络的路由协议很少考虑到协议本身的安全性问题。提出了一种基于认证的节点分离安全多路径路由协议,在多路径的建立过程中加入了安全机制。分析表明,该路由算法在提供负载平衡、提高整体吞吐量、增加容错性的基础上能够很好地保证路由协...
通用可组合安全的Mesh网络认证协议
Mesh网络 通用可组合 认证协议
2009/1/22
无线Mesh网络的现有认证协议不支持双向802.1X的认证端口开放.基于密钥交换协议交换,利用“通用可组合”安全模型的组合特性与信任传递技术,在应答消息中安全结合反向认证信息,实现了满足Mesh网络双向认证需求的认证协议,不仅具有可证明的安全性,且通信开销较原协议降低60%以上.
A Distributed Topology Control Algorithm to Conserve Energy in Heterogeneous Wireless Mesh Networks
Topology Control Wireless Mesh Networks Backbone Energy Efficiency
2010/2/2
A considerable amount of energy is consumed during
transmission and reception of messages in a wireless mesh network
(WMN). Reducing per-node transmission power would greatly
increase the network l...