45 results about "Energy efficient routing" patented technology

A method and system of an embodiment may include identifying a power source used by a network element, determining a carbon footprint of a unit of power usage from the power source, identifying one or more components associated with the network element used for a network operation performed by the network element, determining the power usage of the one or more identified components during the process, and calculating the carbon footprint of the process performed by the network element.

The invention discloses an energy-saving routing method of nodes of an energy effective based on a context-aware technology. A CATRP (Context-Aware Technology Routing Protocol) is used as a routing work way of nodes in an internet of things environment, so as to achieve an established energy saving goal. The method disclosed by the invention belongs to the technical field of the internet of things. According to the method disclosed by the invention, the context-aware technology is applied to communicational nodes which work in the internet of things as a core technology for an energy-saving purpose of the invention, and composition modules of the protocol are designed comprehensively from the perspectives of working process, data structure, quantitative algorithm design, and the like. Due to application of the patent, a good foundation for realization of a universal computing service in the whole society in the near future can be laid, right development of the internet of things technology in the future is guided, theoretical basis enrichment and certain contribution for transformation of a wireless sensor network technology at the present stage are made, and the method has important meaning to enhancement of energy saving technology level of the internet of things in the industry, to acceleration of schedule of a national energy-saving routing research subject for nodes of the internet of things, to promotion of domestic demand, and to promotion of development of related industries.

The invention discloses an energy-saving route setup and power distribution method in a wireless multi-hop relay network in the technical field of network communication. The energy-saving route setup and power distribution method comprises the following steps of: firstly, randomly setting up an initialized route; updating a pheromone in the initialized route during a setup procedure; secondly, setting up a route on the basis through a setup method, and updating a pheromone in the route; obtaining an optimal route according to the pheromone in the route, and updating a specific parameter of the setup method; and repeating the steps for set time to obtain an optimal route which is a final route. According to the energy-saving route setup and power distribution method disclosed by the invention, by comprehensively considering network node residual energy, limited node transmitting power, inter-nodal interference and link transmission rate, the network throughput and the energy service efficiency are comprehensively optimized, so that a route algorithm can more adaptive to the changeful environment of the wireless multi-hop relay network, and meanwhile, the goal that energy is saved for the network is achieved.

The invention provides an energy-efficient routing algorithm (MEERP) for a wireless sensor network, and belongs to the technical field of the wireless sensor network application. This algorithm introduces a mobile sink node and a mobile relay node, considers a size of the network and a quantity of the nodes, and divides the network into several square areas; and then according to a weight sum of node residual energy and a cluster barycentric coordinate distance, a cluster head is selected. The nodes in a grid is communicated with a cluster head node through a multi-hop manner; a controllable mobile strategy is used for the mobile sink node, and when the mobile sink node moves to near the cluster head node, the cluster head node directly sends collected data to the mobile sink node; and a regular mobile manner is used for the mobile relay node in the network, and when the mobile relay node moves to a same position as a sensor node, the mobile relay node takes a forwarding task of all packets of the sensor node, but the sensor node only sends data which are sensed by the sensor node. This algorithm is mainly used in the wireless sensor network route control field.

The invention discloses an energy saving routing algorithm of a composite structure mine emergency rescue wireless mesh network. The algorithm includes the following steps: step 1, node type information is set up; step 2: communication states of Mesh wireless terminals are divided into three types, namely, an 'interior' state, an 'edge' state and a 'repair' state; step 3, each Mesh terminal node maintains one Mesh backbone routing node list; and step 4, if the first Mesh terminal is found to be in the 'interior' state, the neighbor backbone routing nodes nearest to a gateway are selected to set up a route to the gateway directly according to information of the Mesh backbone routing node lists.

The invention discloses an application method of a location heuristic factor in establishment of wireless ad hoc network energy-saving routing. On the basis of network energy-saving routing for low-speed wireless ad hoc network with network layer based on ant colony algorithm, network node location is used as one of probabilistic selection heuristic factors in routing establishment, so that neighbor nodes with more advantageous location distribution are highly possible to select for routing, success rate in routing search can be increased, retries of routing search are reduced and energy waste is further reduced. A routing request is initiated from a source node. After a routing request ant is broadcast and status information of a network is searched, a routing reply ant generated by a target node establishes routing from the source node to the target node by means of probabilistic selection. As the location heuristic factor serves as one of important factors in routing probabilistic selection, the routing probabilistic selection tends to connection between the target node and the source node.

The invention discloses an adaptive energy-saving route method for an SDN network and based on link utilization rate. According to features of the SDN network and for solving the shortcoming in an existing energy-saving route algorithm, the link utilization rate which is changed in real time is used as a link cost, and before route selecting, information of a network topology structure and flow matrix is acquired at first. Then a network topology is optimized and pruned, and calculating time of the route algorithm is shortened. According to the route scheme, demands of QoS can be guaranteed while the energy is saved, and after running for a period of time, input streams are automatically gathered on a specific heavy-load link. Finally, a non-load link is closed on the premise of guaranteeing network connectivity. By the method, the energy-saving effect is good in a simulating network, and time complexity is relatively low.

The invention relates to a delay tolerant network energy-efficient routing scheme based on social attribute forwarding. When messages are transmitted from a source node to a target node, routing is carried out according to the following principles that forwarding of the messages in a network is in a single-copy mode; a life cycle TTL field is built for each newly generated message, the initial value of each field is a preset natural number n, a TTL value is reduced by 1 each time the corresponding message is forwarded, and when the TTL value is reduced to 0, the corresponding message is abandoned; the node carrying the messages forwards the messages to the node when and only when meeting a node with a social index SM value amp_ratio times larger than a social index SM value of the node. Besides, message forwarding conditions of the node carrying the messages can be adjusted in a self-adaptation mode by dynamically changing amp_ratio. By means of implement of the scheme, forwarding frequency of the messages in the network is effectively lowered, and routing power consumption of the delay tolerant network is effectively lowered on the premise that a high transmission success rate is guaranteed.

The invention relates to a network device management and energy saving method as well as a resource management device and a route energy saving device thereof. The network device management and energy saving method comprises the following steps: network devices are divided into non-intersected groups which are independent and cover a whole network, intersected groups which have shared devices with other groups and cover the whole network, and an auxiliary group which is composed of a number of scattered devices and cannot cover the whole network; sorting all the network device groups in a unified manner; conducting a global energy-saving routing algorithm on the groups one by one; and determining working network device groups and dormant network device groups according to the relationship between network traffic and network capacity and the sorting sequence of the network device groups. As the network resource reorganization of devices of a whole data center network is based on mastering of the original network structure of the data center network, and the subsequent algorithm is conducted on the groups one by one, the complexity of the algorithm is greatly reduced, and the practicability is improved; and not only the problems that working hours of the devices are uneven and the devices are started frequently, but also the problem that network oscillation can be caused by dormancy awakening of the devices is solved.

The invention relates to an energy-efficient routing algorithm based on a genetic algorithm, which is characterized in that: in an energy harvesting wireless sensor network, establishing a fitness function considering absorption energy, residual energy, consumption energy and waste energy of a node, searching a global optimal path by using the genetic algorithm, and considering energy balance andenergy waste based on the minimum path loss. The energy-efficient routing algorithm has the advantages in energy utilization compared to a fitness function considering only minimum path energy consumption, a fitness function partially considering the path energy consumption and the absorption energy and residual energy of the node on the path, and a fitness function partially considering the pathenergy consumption and the waste energy of all nodes in the network, and can better extend the life cycle of the network.

The invention relates to a Q learning-based energy-saving routing method for an SDN network, and belongs to the technical field of network energy saving. The core method comprises the following steps:counting network flow requirements at the current moment, and storing the network flow information into a task queue according to difference of a source node and a target node; constructing a Q tablefor each target node of the network flow and initializing the Q table; taking elements out of the queue, inputting corresponding Q tables according to different destination nodes, outputting the nexthop node position, obtaining awards, and updating the Q tables; repeatedly iterating and updating the Q table; and processing the network flow demand by using the trained Q table. The method is characterized in that the SDN controller directly provides a routing path for each network flow, and dynamically adjusts the on-off states of the router and the link, so that the network achieves the optimal energy efficiency under the condition of meeting the flow demand.

The invention discloses an intra-domain energy-saving routing method based on quick rerouting, comprising the steps of: storing all nodes in a network into a queue Q, calculating a shortest path treespt(v) which uses an arbitrary node v as the root and the shortest path between all node pairs; storing all links in the network into a linked list L, selecting an arbitrary link (u, v) from the linked list L, performing statistics on link loops LC to which the link (u, v) belongs; counting the number of times of occurrences of the each link in the formed all link loops, performing ascending sorting according to the number of times of occurrences of the each link, and storing a sorting result into a linked list M; closing all the links of which deletion marker attributes are zero in the network, calculating a link set P of the all link loops, and marking deletion attributes of the all links in the link set P as 1. Through adoption of the intra-domain energy-saving routing method of the invention, a real-time traffic matrix is not required, and a quick rerouting technology and an energy-saving technology can be combined, thereby balancing energy saving and a network performance.

The invention discloses an energy-efficient routing decision-making method for a wireless sensor network in a tunnel environment, which comprises the following steps that a tunnel node serving as a source node initiates a routing request and initializes a routing request frame at the same time; after receiving the routing request, the routing node calculates decision factors ETX, Ei and E3TX, updates a routing table, checks whether a table entry of a destination node exists in the routing table, and sends a routing response if the table entry of the destination node exists in the routing table; the routing node receives the routing response, the node compares the locally calculated information with the data in the routing response frame, and if the condition is met, the routing node stopsforwarding to the source node and generates a reverse route. According to the present invention, the optimal path from the source node to the destination node can be obtained by using the routing decision algorithm in combination with energy efficiency, hop count, ETX and reliability, and meanwhile, the problems of time delay and reliability are solved.

The invention discloses a robust energy efficiency routing method for a teaching cloud computing network, and belongs to the field of cloud computing network green communication. According to the invention, the maximum group of dormant links are searched by applying the SRLA, and the redundant links are converted into the dormant state as much as possible, so that the energy-saving network is realized. The REERA can meet the network robustness requirement under the condition of ensuring normal network routing. The MCRA routing algorithm represents the stability of the whole network through thenetwork criticality, and finally, the dormant redundant link algorithm is combined with the minimum criticality routing algorithm to construct the robust high-efficiency energy-saving routing of thecloud computing network, so that the problem of low-energy-efficiency cloud computing backbone network operation is solved. More importantly, the method can dynamically change and adjust the link weight, ensures that the links can be used in a maximum unified manner, avoids traffic congestion when some links of the cloud computing network are used excessively, and can improve the performance of the whole network.