| 主权项 |
1. A vehicular communication system, comprising:
a source node; a plurality of relay nodes; and a destination node, wherein when the source node wants to communicate with the destination node, the source node sends a route request packet to find at least one transmission path to the destination node, wherein each of the transmission path comprises at least one road section, and each of the road section comprises at least one road slot; after receiving the route request packet, each of the relay nodes relays the route request packet to the destination node; after receiving the route request packet, the destination node sends a route reply packet to the source node through the relay nodes locating on the at least one transmission path; wherein when a first relay node of the relay nodes, which locates in a last road slot of each of the road section, receives the route reply packet, the first relay node is configured to:
obtain a plurality of moving traces of a plurality of specific relay nodes according to the route reply packet, wherein the specific relay nodes comprises the relay nodes currently locating in a specific road section, and the specific road section is the road section that the route reply packet currently reaches;estimate at least one connection life period related to a plurality of specific road slots according to the moving traces, wherein the specific road slots are the road slots within the specific road section;estimate at least one connection available interval of the specific road section according to the at least one connection life period; andappend the at least one connection available interval to the route reply packet and forward the route reply packet,wherein the last road slot is the road slot that the route reply packet lastly reaches in each of the road section while being relayed to the source node. |
