摘要:
A method and system for determining a size of a local peer group (LPG) network in a dynamic roadway (mobile) environment is provided. In one embodiment, the method comprises measuring a roundtrip time between a first node and a second node, and utilizing the measured roundtrip time to select the size of the local peer group network from a lookup table. In another embodiment, the method comprises determining when the roundtrip time exceeds a time interval of the heartbeat signal, and when the roundtrip time exceeds the time interval of the heartbeat signal adjusting the size of the local peer group network.
摘要:
An open communication method between at least two sub-networks of different routable network addressing schemes comprises receiving a packet for a specific application, the packet including an application identifier, determining if the packet is to be relayed to another of the at least two sub-network based upon the application identifier; determining if a node receiving the packet is a broker node, relaying the packet to a broker node if not a broker node, forwarding, by the broker node, the packet to at least one node in another of the at least two sub-networks, broadcasting a status packet from a broker node to each sub-network that the broker node is configured to communicate, receiving the status packet from the broker node, and updating a broker table using information from the status packet, wherein only a broker node updates the broker table.
摘要:
An open communication method between at least two sub-networks of different routable network addressing schemes comprises receiving a packet for a specific application, the packet including an application identifier, determining if the packet is to be relayed to another of the at least two sub-network based upon the application identifier; determining if a node receiving the packet is a broker node, relaying the packet to a broker node if not a broker node, forwarding, by the broker node, the packet to at least one node in another of the at least two sub-networks, broadcasting a status packet from a broker node to each sub-network that the broker node is configured to communicate, receiving the status packet from the broker node, and updating a broker table using information from the status packet, wherein only a broker node updates the broker table.
摘要:
The present invention offers systems and methods for effective multiple-hop routing, multicasting and media access control for vehicle group communications that employ directional wireless radio technology. Multi-beam optic-wireless media and streamlined operations provide low-overhead communications among vehicles. Systems and methods are provided to maintain a quasi-stationary group of neighboring vehicles, enable high-throughput on-demand switching among multiple vehicles, enable group coding in the vehicle group to achieve higher throughput, and enable dynamic adjustment of link to maintain desirable vehicle group. The proposed solution builds upon the conception of a MAC-free wireless operation and quasi-stationary vehicular switched network to achieve ultra-low-overhead and high-throughput vehicle communications.
摘要:
The present invention offers systems and methods for effective multiple-hop routing, multicasting and media access control for vehicle group communications that employ directional wireless radio technology. Multi-beam optic-wireless media and streamlined operations provide low-overhead communications among vehicles. Systems and methods are provided to maintain a quasi-stationary group of neighboring vehicles, enable high-throughput on-demand switching among multiple vehicles, enable group coding in the vehicle group to achieve higher throughput, and enable dynamic adjustment of link to maintain desirable vehicle group. The proposed solution builds upon the conception of a MAC-free wireless operation and quasi-stationary vehicular switched network to achieve ultra-low-overhead and high-throughput vehicle communications.
摘要:
An open communication method between at least two sub-networks of different routable network addressing schemes comprises receiving a packet for a specific application, the packet including an application identifier, determining if the packet is to be relayed to another of the at least two sub-network based upon the application identifier; determining if a node receiving the packet is a broker node, relaying the packet to a broker node if not a broker node, forwarding, by the broker node, the packet to at least one node in another of the at least two sub-networks, broadcasting a status packet from a broker node to each sub-network that the broker node is configured to communicate, receiving the status packet from the broker node, and updating a broker table using information from the status packet, wherein only a broker node updates the broker table.
摘要:
Network architecture configured for open communication between a plurality of sub-networks. Each of the plurality of sub-networks has a different routable network addressing scheme. The architecture includes at least one broker node adapted to communicate using at least two different routable network addressing schemes. The broker node comprises an identification management module configured to collect peer-application addresses for nodes currently accessing a specific application, the peer-application addresses being associated with a specific application, an address resolution module configured to map each of the peer-application addresses to a sub-network specific routable network address and a network coordination module configured to monitor and coordinate sub-network communication capabilities between the broker node and at least one other broker node and elect a primary broker node for each sub-network which the broker node and at least one other broker node is capable of communication.
摘要:
A method for transmitting data in vehicular network comprising determining a communication window between at least two nodes, grouping a plurality of fragments of content together into an aggregate fragment block, forwarding the aggregate fragment block to a target node and assembling the plurality of fragments into the content. The content is divided into the plurality of fragments. A fragment signature is generated for the fragments that contain fragment index information regarding each fragment. Each fragment is unambiguously identified by its signature. A number of fragments grouped into the aggregate fragment block is dependent on the communication window.