Terminal Device Power Allocation for V2X Collision Reduction
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Solution Overview
Problem
In high-density service scenarios, wireless communication systems face challenges with transmission resource insufficiency and transmit power limitations, leading to increased transmission collisions and reduced performance in V2X communication systems, where multiple terminal devices contend for limited resources, resulting in inadequate data transmission.
Innovation Solution
The method involves performing transmission control operations on the first sidelink logical channel, allowing terminal devices to autonomously select and allocate resources, prioritize data transmission based on importance, and manage transmit power to ensure reliable communication, thereby improving system performance.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If terminal devices autonomously select transmission resources from a preconfigured pool, then transmission flexibility and device autonomy are improved, but transmission collision rate increases as more devices compete for limited resources
Solution Approach 1:
The transmission resource pool is segmented into multiple subchannels or resource blocks, and terminal devices are assigned different selection ranges or priorities. This segmentation reduces the probability of multiple devices selecting the same resource while maintaining autonomous selection capability.
Solution Approach 2:
The patent introduces dynamic resource allocation mechanisms where the network device can adjust the transmission resource pool configuration based on real-time channel conditions and device priorities. This dynamic adjustment optimizes resource distribution and reduces collisions in high-density scenarios.
2Adaptability or versatility
If terminal devices transmit multiple types of service data simultaneously, then service coverage and data completeness are improved, but total transmit power requirement increases beyond system limits
Solution Approach 1:
Different types of service data are assigned different transmit power levels based on their local requirements and priorities. Critical data types receive higher power allocation while less critical data uses lower power, allowing multiple services to coexist within the total power limit.
Solution Approach 2:
The patent applies partial power allocation where not all service data types receive full power treatment. Instead, power is partially allocated based on service priorities, ensuring that essential services can transmit reliably while less critical services share remaining power capacity.
3Reliability
If transmission resources and transmit power are increased to handle high-density service scenarios, then data transmission reliability is improved, but system resource consumption and energy usage increase
Solution Approach 1:
The patent dynamically adjusts transmission parameters such as modulation and coding schemes, transmit power levels, and resource allocation based on real-time channel conditions and service requirements. This parameter optimization ensures reliable transmission while minimizing resource consumption in high-density scenarios.
Data Source
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AI summary
Embodiments of the present invention disclose a method for data transmission in a wireless network, an apparatus, and a system. The method for data transmission includes: determining, by a terminal device, first configuration information; and if the terminal device determines that type-1 data and type-2 data need to be transmitted at a same time, allocating, by the terminal device, a first transmit power for first data based on the first configuration information. In this case, transmission performance of a system in a high-density service scenario is improved, while transmission quality of important data is ensured.