Telcordia Technologies, Inc.

Toyota Infotechnology Center, U.s.a., Inc.

Taek-Jin Kwon

Wai Chen

Rama K Vuyyuru

Ryokichi Onishi

John Lee

Ratul Kumar Guha

Toshiro Hikita

Yibei Ling

Jasmine Chennikara-Varghese

Junichiro Fukuyama

Marcus Pang

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.

Architecture for open communication in a heterogeneous network

A method for maintaining a local peer group (LPG) for supporting communications among vehicles. The LPG is formed from a plurality of vehicles. Each vehicle is equipped with a wireless communications device. One of the vehicles is selected as a group header node (GH). The method comprises receiving periodically a heartbeat packet from the GH, the heartbeat packet including a maximum hop count, and a heartbeat cycle, forwarding the heartbeat packet until the maximum hop count is reached after waiting for a first random relay delay, which is less than a maximum allowable adjustable value, replying to the heartbeat packet with a membership report packet, forwarding a membership report packet towards the GH, and adding a vehicle that submitted the membership report packet to a LPG membership as a member node of the LPG if the membership report packet is new or updating information for a member node.

Program and method for adaptively maintaining a local peer group in a dynamic environment

A method and communication device for routing unicast and multicast messages. The method for routing a unicast message includes receiving a first control packet including routing parameters from a group header node, updating a routing table based upon the routing parameters, receiving a second control packet including additional routing parameters from a group node, updating the routing table based upon the additional routing parameters and generating a forwarding table from the routing table when both of the updated steps are completed. The unicast message is routed based upon the forwarding table. A method for routing a multicast message comprises receiving the multicast message, determining if a multicast group destination for the multicast message is in a multicast forwarding table (MFT), determining if the multicast message has been previously forwarded and forwarding the multicast message if the message was not previously forwarded and the multicast group destination is in the MFT.

Method and communication device for routing unicast and multicast messages in an ad-hoc wireless network

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.

Adaptation protocols for local peer group (LPG) networks in dynamic roadway environments

A method of controlling a wireless communication device that is installed in a moving vehicle. The method comprises receiving roadway topology information and vehicle traffic pattern information, receiving vehicle and wireless communication device performance information from a plurality of other moving vehicles, determining current position information for the moving vehicle; determining a first set of metrics for a performance of the wireless communication device installed in the moving vehicle, estimating at least one second metric related to the performance of the wireless communication device or an ad-hoc network which includes each wireless communication device and changing an operation or routing parameter for the wireless communication device based upon the estimation. The second metric is based upon at least a sub-set of the first set of metrics, the received information and the determined current position information for the moving vehicle.

Program and method for adaptive mobile ad-hoc wireless communication

An ad-hoc wireless network with a roadside network unit (RSU) and a local peer group (LPG). The LPG is formed from a plurality of moving vehicles. The LPG includes a group header node (GH) for managing the LPG. The GH is elected from one of the moving vehicles. The LPG further includes group nodes (GN) designated from the remaining moving vehicles in a given area. Each of the moving vehicles, whether the GH or the GN, communicates with other using routing paths created based upon a first control packet broadcast from the GH and a second control packet broadcast from each of the GN. Each moving vehicle communicates with the RSU using a routing paths created based upon a beacon broadcast by the RSU and a reply signal from each of the moving vehicles. The RSU can also be a member of the LPG and act as GN or GH.

Growing community of inventors

Morganville, NJ, United States of America

Taek-Jin Kwon