Relay Notification Field for Selective V2X Message Distribution
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Solution Overview
Problem
Current vehicle-to-vehicle (V2V) and vehicle-to-infrastructure (V2X) communication systems lack a method to combine the benefits of direct and relayed communication, leading to inefficiencies such as bandwidth waste and limited reach, as they operate independently without integrating the advantages of both approaches.
Innovation Solution
A communication system and method that utilize a relay to determine which user equipment has direct communication capabilities and transmit messages accordingly, using a notification data field to control message distribution, allowing direct communication for proximal vehicles and relayed communication for those out of range, thereby optimizing message delivery and reducing capacity consumption.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Area of stationary object
If relayed communication is used to extend message distribution area, then reachability is improved, but bandwidth capacity is wasted when many vehicles receive the same message
Solution Approach 1:
The patent applies local quality by making the relayed communication behavior adaptive to local conditions - specifically, the relay point only forwards messages to vehicles that cannot receive them via direct communication. The notification data field enables the relay to selectively apply relaying only where needed (to vehicles without direct communication capability) rather than universally, thus extending reachability to larger areas while avoiding bandwidth waste on vehicles that can receive messages directly.
2Loss of energy
If direct communication is used for all vehicles, then bandwidth capacity is preserved, but reachability is limited to proximity only
Solution Approach 1:
The patent introduces a relay point as an intermediary between the transmitting vehicle and receiving vehicles that are out of direct communication range. The relay point receives messages from the transmitting vehicle, determines which receiving vehicles cannot be reached directly (using the notification data field), and forwards messages only to those vehicles. This intermediary approach extends communication reachability beyond direct proximity while conserving bandwidth by avoiding redundant transmissions to vehicles already reachable directly.
3Area of stationary object
If relayed communication is used to reach vehicles out of range, then communication coverage is extended, but message distribution efficiency decreases due to unnecessary forwarding
Solution Approach 1:
The patent applies preliminary action by having the transmitting vehicle include notification data in the initial message that identifies which receiving vehicles have direct communication capability. The relay point uses this pre-provided notification data to determine in advance which vehicles should receive relayed messages, avoiding unnecessary forwarding operations. This preliminary information preparation enables the relay to efficiently extend coverage only to vehicles that truly need relayed communication, maintaining high message distribution efficiency.
Data Source
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AI summary
User equipment configured to: transmit a message to at least one other user equipment using direct communication; and transmit to a relay, a message and a notification data field, the message for transmission to a set of user equipment without direct communication capabilities with the user equipment.