摘要:
A method for relaying packets through a relay node in a communication system composed of a source node, a destination node and at least one relay node for transferring the packets transmitted from the source node to the destination node. The relay node compares a potential corresponding to a number of hops and constituting the transferred packets with a stored potential from the destination node. If the stored potential is smaller than the potential constituting the packets, the relay node updates the packet and broadcasts the updated packets. Also, according to a method for setting a route for transmitting packets, packets are broadcast and it is checked whether updated packets obtained by updating the broadcast packets are received. If updated packets are received, an address of a packet transmission node constituting the updated packets is stored and the following packets are transmitted to the node having the stored address.
摘要:
A method for relaying packets through a relay node in a communication system composed of a source node, a destination node and at least one relay node for transferring the packets transmitted from the source node to the destination node. The relay node compares a potential corresponding to a number of hops and constituting the transferred packets with a stored potential from the destination node. If the stored potential is smaller than the potential constituting the packets, the relay node updates the packet and broadcasts the updated packets. Also, according to a method for setting a route for transmitting packets, packets are broadcast and it is checked whether updated packets obtained by updating the broadcast packets are received. If updated packets are received, an address of a packet transmission node constituting the updated packets is stored and the following packets are transmitted to the node having the stored address.
摘要:
A method of setting a route for effective data transmission in a sensor network including a movable sink node and a plurality of sensor nodes which collect data requested by the movable sink node, the method including: transmitting an agent requesting message from the movable sink node to the sensor nodes; receiving a first agent acceptance message from a first sensor node of the sensor nodes; and selecting, as an agent node, the first sensor node. By using the sensor nodes which are static, the number of data transmission can be saved, thereby reducing power consumption in the respective sensor nodes and also preventing retardation of data transmission.
摘要:
A wireless ad-hoc network for transmitting packets to target regions, and a packet transmission method thereof, are provided. The ad-hoc network includes at least one relay node for receiving a packet containing location information of at least two target regions each including at least one node, separating the received packet by the location information, forming a new packet for each instance of the location information separated from the received packet, and forwarding the new packets to corresponding target regions; and a source node for generating the packet containing the location information and transmitting the packet to the relay node. The present invention can reduce the packet transmission overhead, the packet transmission delay, and the power required for the packet transmission. Therefore, the packets can be delivered to the target regions in an efficient manner.
摘要:
A hand-off method including detecting edge nodes located at edges of a mobile ad-hoc network (MANET); retransmitting, at the detected edge nodes, an Internet gateway advertisement message (IGAM) at a new period; and performing a hand-off of a mobile device moving from an infrastructure network to the MANET using the retransmitted IGAM.
摘要:
An ad-hoc network and routing method that takes account of mobility are provided. The ad-hoc network includes at least one node, which calculates a probability that a neighbor node is present in a transmission range of the node, generates a message containing the calculated probability, and transmits the message to the neighbor node. The at least one node may also update the message with a lower probability of the calculated probability and a probability contained in the message, and transmit the updated message to the neighbor node. The node may also determine as a route a path along which a message is transmitted from the message containing the highest probability among probabilities contained in messages that are received.
摘要:
A method for a hybrid service discovery adapting between push-based and pull-based schemes in a mobile ad-hoc network and a system thereof. The method includes periodically transmitting a first control packet for providing service information from a service provider that is capable of providing a service to nodes located in a specified advertisement zone, transmitting a second control packet requesting the service from a service demander to one or more nodes in a network, and transmitting a third control packet including path information of the service provider if at least one of the nodes located within the advertisement zone and the service provider receives the second control packet. The method and the system can reduce the amount of control packet transmission and minimize an end-to-end delay.
摘要:
An ad-hoc network and routing method that takes account of mobility are provided. The ad-hoc network includes at least one node, which calculates a probability that a neighbor node is present in a transmission range of the node, generates a message containing the calculated probability, and transmits the message to the neighbor node. The at least one node may also update the message with a lower probability of the calculated probability and a probability contained in the message, and transmit the updated message to the neighbor node. The node may also determine as a route a path along which a message is transmitted from the message containing the highest probability among probabilities contained in messages that are received.
摘要:
An ad-hoc network for routing extension by supporting the IPv6 protocol and a method for routing extension. The ad-hoc network comprises a gateway for appending an address configuration message to an ad-hoc Routing REPly (RREP) message and transmitting an extended ad-hoc RREP message; and a node for separating the address configuration message from the received extended ad-hoc RREP message, establishing a packet transmission path using the ad-hoc RREP message, and configuring a global address using the separated address configuration message. Accordingly, the present invention provides efficiency and improves the network scalability by utilizing the existing IPv6 protocol without amendments and reducing the size of the packet transmitted.
摘要:
A hand-off method including detecting edge nodes located at edges of a mobile ad-hoc network (MANET); retransmitting, at the detected edge nodes, an Internet gateway advertisement message (IGAM) at a new period; and performing a hand-off of a mobile device moving from an infrastructure network to the MANET using the retransmitted IGAM.