V2X Sidelink Sync Signal Transmission Period Adjustment
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Solution Overview
Problem
Current V2X communication technologies, such as LTE, are limited in supporting advanced Vehicle-to-Everything (V2X) applications due to constraints in communication rates, delays, and reliability, necessitating the development of new methods for synchronization that adapt to varying network signal conditions.
Innovation Solution
A method and apparatus for Vehicle-to-Everything synchronization, where a first terminal adjusts the transmission period of a sidelink synchronization signal based on detected changes in network signal conditions, allowing for adaptive synchronization of second terminals, thereby enhancing communication quality and energy efficiency.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Stability of the object's composition
If the transmission period is fixed, then the synchronization is stable, but the adaptability to changing network conditions deteriorates
Solution Approach 1:
The patent implements dynamic adjustment of the transmission period based on detected network signal conditions. The first terminal monitors network conditions and adjusts the transmission period of sidelink synchronization signals accordingly, transitioning from a fixed period to a dynamic adaptive period that responds to changing network environments, thus resolving the contradiction between stability and adaptability.
Solution Approach 2:
The patent changes the transmission period parameter based on network signal conditions. When network conditions change, the first terminal adjusts the transmission period parameter to optimize synchronization performance, allowing the system to adapt to different network environments while maintaining stable synchronization through controlled parameter modification.
2Reliability
If the transmission period is shortened to improve synchronization accuracy, then the communication reliability improves, but the energy consumption increases
Solution Approach 1:
The patent dynamically adjusts the transmission period based on actual network conditions rather than using a fixed short period. When network conditions are good, a longer period can be used to save energy; when conditions deteriorate, the period is shortened to maintain reliability. This dynamic approach resolves the contradiction by making energy consumption dependent on actual needs rather than being constantly high.
Solution Approach 2:
The transmission period parameter is adjusted based on network signal conditions to optimize the balance between reliability and energy consumption. By changing this parameter adaptively, the system achieves high reliability only when necessary, thereby reducing overall energy consumption while maintaining communication reliability when needed.
3Ease of manufacture
If LTE-based V2X communication is used, then the implementation is simple, but the communication rate and reliability are limited
Solution Approach 1:
The patent enables the terminal to operate in multiple modes: it can function as both a network-controlled terminal and an autonomous synchronization terminal. This multi-functionality allows the system to use simple LTE-based communication when available, while also supporting more reliable autonomous synchronization when network conditions are poor, thus resolving the contradiction between implementation simplicity and communication reliability.
Solution Approach 2:
The first terminal acts as an intermediary synchronization source for other terminals in the network. By providing sidelink synchronization signals to second terminals, it creates a intermediate synchronization layer that improves overall system reliability while building upon the existing LTE infrastructure, thus maintaining implementation simplicity while enhancing reliability.
Data Source
AI summary
Methods and apparatuses are provided for Vehicle-to-Everything synchronization for a first terminal. The method is implemented by the first terminal and includes: determining a transmission period for transmitting the sidelink synchronization signal under a first network signal condition as a first period; in response to that a second network signal condition is detected, adjusting the transmission period for transmitting the sidelink synchronization signal based on a set rule to obtain a second period after the adjustment, where the second network signal condition is different from the first network signal condition, and the second period is different from the first period; and transmitting the sidelink synchronization signal to one or more second terminals according to the second period, for a Vehicle-to-Everything synchronization by the one or more second terminals based on the received sidelink synchronization signal, where the one or more second terminals are respective receiving ends for the sidelink synchronization signal.