V2V Communication Device Radio Resource Switching
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Solution Overview
Problem
In vehicle-to-vehicle (V2V) communication, the use of radio resources associated with geographical location is hindered when communication devices cannot acquire location information, such as in areas with no GPS signal, leading to potential communication disruptions.
Innovation Solution
A communication device and base station system that transmits radio signals using a first radio resource when location information is acquired, and switches to a second radio resource, decided by the device or network, when location information is unavailable, allowing communication to continue even without precise location data.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If radio resources associated with geographical location are used for V2V communication, then communication reliability is improved when location information is available, but communication is disrupted when location information cannot be acquired
Solution Approach 1:
The communication device dynamically switches between two different radio resource selection methods based on the availability of location information. When location information is available, the device uses location-based radio resource selection (first method); when location information is unavailable, it switches to non-location-based radio resource selection (second method). This dynamic adaptation ensures continuous V2V communication reliability across different environmental conditions.
2Productivity
If location information is always required for radio resource selection, then communication efficiency is improved through location-based resource allocation, but communication continuity is compromised in areas without GPS signal
Solution Approach 1:
The invention changes the parameter of radio resource selection methodology based on the availability condition of location information. The system maintains two distinct parameter sets: one for location-based resource selection (optimized for communication efficiency when GPS is available) and another for non-location-based resource selection (ensuring communication continuity when GPS is unavailable). This parameter switching resolves the contradiction between efficiency and continuity.
3Adaptability or versatility
If the communication device switches between different radio resource selection methods, then adaptability to different environments is improved, but device complexity increases
Solution Approach 1:
The radio resource selection mechanism is segmented into two independent, well-defined methods. The first method handles location-based resource selection when GPS signal is available, and the second method handles non-location-based resource selection when GPS signal is unavailable. This segmentation allows each method to be independently optimized and simplifies the switching logic, managing device complexity while maintaining high adaptability.
Data Source
AI summary
A communication device according to one embodiment comprise a transmitter configured to directly transmit a radio signal to another communication device. The transmitter is configured to transmit, when first location information indicating a geographical location of the communication device is acquired, the radio signal, based on a first radio resource associated with a location indicated by the first location information. The transmitter is configured to transmit, when the communication device cannot acquire the first location information, the radio signal, based on a second radio resource. The second radio resource is decided based on a method different from a method of deciding the first radio resource by using the first location information.