Time-dependent vehicle routing problem (TDVRP) is concerned with vehicle routing optimization in road networks with fluctuant link travel time. Firstly, Time-dependent functions about routing time indicator and routing threat indicator are introduced. Secondly, a time-dependent heuristic function including routing distance indicator, routing time indicator and routing threat indicator is constr...

Flow-based routing algorithms have recently been proposed where the online routing process uses a priori knowledge of the ingress-egress pairs and an estimation of the traffic profile to reduce LSP rejection in MPLS networks. This paper presents a new routing scheme referred to as Least Interference Optimization (LIO) where the online routing process uses the current bandwidth availability and ...

Routing protocol in wireless sensor network (WSN) has always been a frequently adopted topic of research in WSN owing to many unsolved issues in it. This paper discusses about the multicast routing protocols in WSN and briefs up different forms of standard research contribution as well as significant recent research techniques toward leveraging the performance of multicast routing. The paper th...

Because of the energy load imbalance of cluster nodes in wireless sensor networks, this causes cluster heads tend to die earlier in the case of more tasks and routing problem such as larger energy loss, so an adaptive energy optimization clustering routing algorithm is proposed. The node residual energy and distance are taken into full consideration by the measure coefficient on the cluster-hea...

Graph coloring was exploited in wireless sensor networks to solve many optimization problems. These problems are related in general to channel assignment. In this paper, we propose to jointly use coloring for routing purposes. We introduce CHRA a coloring based hierarchical routing approach. Coloring is exploited to avoid interferences and also to schedule nodes transmissions to sink. We provid...

To optimization of sensor network is based on the route optimization. Routing in sensor network is adaptive to the energy constraint and communication parameters. To perform the optimize and low cost communication over the network, it is required to optimize the communication. To achieve the effective outcome from network, effective selection of routing constraints, parameters and algorithmic a...

time-dependent vehicle routing problem is one of the most applicable but least-studied variants of routing and scheduling problems. in this paper, a novel mathematical formulation of time-dependent vehicle routing problems with heterogeneous fleet, hard time widows and multiple depots, is proposed. to deal with the traffic congestions, we also considered that the vehicles are not forced to come...

wireless sensor networks are the new generation of networks that typically are formed great numbers of nodes and the communications of these nodes are done as wireless. the main goal of these networks is collecting data from neighboring environment of network sensors. since the sensor nodes are battery operated and there is no possibility of charging or replacing the batteries, the lifetime of ...

This paper presents an OSPF routing optimization framework taking into account a set of multiconstrained QoS requirements of the networking domain. The proposed optimization approach, based on Evolutionary Computation, is able to handle network scenarios with both unicast and multicast traffic, providing high quality configurations for single-topology or multi-topology routing approaches. The r...