Vehicular Communication Channel Segmentation for Bandwidth
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Solution Overview
Problem
Current vehicular communication methods, such as those using Wireless Access in Vehicular Environments (WAVE) and 802.11p, are inadequate for high-bandwidth applications like public safety communication and car-to-car video streaming due to bandwidth shortages and interference from primary transmitters.
Innovation Solution
A vehicular communication method and system that utilize a dedicated vehicular communication channel for service advertisements and requests, with temporary communication channels identified through spectrum sensing or online database access, allowing for efficient handover and management of communication channels to maintain service delivery.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Quantity of substance
If existing wireless access standards (WAVE, 802.11p) are used for vehicular communication, then basic communication functionality is provided, but bandwidth is insufficient for high-bandwidth applications
Solution Approach 1:
The communication channel is segmented into two types: dedicated vehicular communication channels for control signaling and temporary communication channels for high-bandwidth data transmission. This segmentation allows the system to utilize additional spectrum resources while maintaining reliable control communication, thereby increasing overall bandwidth capacity for high-bandwidth applications.
Solution Approach 2:
The system transitions from using a single communication channel dimension to utilizing multiple channel dimensions simultaneously. By establishing temporary communication channels in addition to dedicated channels, the system expands the communication dimensionality, enabling parallel data transmission paths and significantly increasing available bandwidth for multimedia and video streaming applications.
2Productivity
If temporary communication channels are used to increase bandwidth, then communication capacity is improved, but channel availability and reliability become problematic
Solution Approach 1:
Before utilizing temporary communication channels for high-bandwidth data transmission, the system performs preliminary spectrum sensing to detect channel availability and identifies suitable temporary channels. This preliminary action ensures that data transmission only begins on channels that are currently available and reliable, preventing transmission failures while maximizing communication capacity.
Solution Approach 2:
The system continuously monitors the status of temporary communication channels through feedback mechanisms, detecting changes in channel availability in real-time. When interference or primary transmitter activity is detected, the system receives feedback about channel degradation and can dynamically switch to alternative channels or adjust transmission parameters, thereby maintaining reliability while utilizing temporary channels for increased capacity.
3Reliability
If spectrum sensing and channel switching are implemented, then channel availability is improved, but system complexity increases
Solution Approach 1:
The communication devices are designed with multi-functionality, capable of operating on both dedicated vehicular communication channels and temporary communication channels using the same hardware infrastructure. This universality allows the system to perform spectrum sensing, channel switching, and data transmission across different channel types without requiring separate dedicated hardware for each function, thereby managing complexity while maintaining high channel availability.
Solution Approach 2:
The system introduces an intermediary layer for channel management that handles spectrum sensing, channel identification, and switching decisions. This intermediary mechanism abstracts the complexity of channel management from the core communication functions, providing a standardized interface for channel selection and switching while maintaining reliable channel availability through systematic monitoring and dynamic adaptation.
Data Source
AI summary
One embodiment of the present disclosure sets forth a technique for enabling vehicular communication. The technique includes broadcasting, from a first communication device of a first vehicle and in a dedicated vehicular communication channel, a service advertisement message indicating that a service is available and can be provided through a temporary communication channel which is determined to be available. The technique further includes receiving from a second communication device of a second vehicle a request for the service in the dedicated vehicular communication channel. The technique further includes transmitting, in response to the request, content of the service in the temporary communication channel to the second communication device.