Carrier Aggregation Power Allocation by Packet Priority in V2X
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Solution Overview
Problem
There is a need for an effective method to set transmit power for carrier aggregation in V2X communication systems, which is not adequately addressed by existing technologies.
Innovation Solution
The method involves setting different minimum guaranteed powers for different priority levels of Per-Packet Priorities (PPPPs) and ensuring these powers are below the terminal's maximum transmittable power, facilitating efficient signal transmission through carrier aggregation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If carrier aggregation is used in V2X communication to increase data transmission capacity, then communication efficiency is improved, but power management complexity increases
Solution Approach 1:
The patent segments the power management process by introducing separate minimum guaranteed power parameters for different priority levels (PPPP0-PPPP7). Each priority level has its own power guarantee, allowing the system to manage power across multiple component carriers in a structured, hierarchical manner rather than as a monolithic problem.
Solution Approach 2:
The patent changes the power management approach by introducing minimum guaranteed power as a new parameter that varies by priority level. This parameter change enables the system to dynamically adjust power allocation across component carriers based on packet priority, transforming the power management mechanism from static to adaptive.
2Adaptability or versatility
If different minimum guaranteed powers are set for different priority levels, then power allocation flexibility is improved, but system complexity increases
Solution Approach 1:
The patent applies local quality by assigning different minimum guaranteed power values to different priority levels (PPPP0-PPPP7) and different component carriers. Each priority level receives tailored power guarantees according to its specific requirements, allowing high-priority V2X communications to receive sufficient power while lower-priority traffic receives appropriate but reduced power allocation.
3Reliability
If transmit power is increased to ensure reliable V2X communication, then communication reliability is improved, but energy consumption increases
Solution Approach 1:
The patent implements partial action by allocating minimum guaranteed power only when necessary to meet reliability requirements for each priority level. Instead of uniformly increasing power across all component carriers and priority levels, the system applies power allocation selectively based on priority needs, ensuring high-priority communications receive sufficient power while avoiding unnecessary energy consumption for lower-priority traffic.
Data Source
Figure 1(a)~1(b)
Figure 2
Figure 3~4
AI summary
An embodiment of the present invention is a method for setting transmit power. The method for a terminal to set the transmit power for a plurality of component carriers (CCs) during carrier aggregation transmission in a wireless communication system includes: a step for acquiring a prose per-packet priority (PPPP) of a signal transmitted from an individual CC; a step for calculating the transmit power of the signal transmitted from the individual CC; and a step for setting a minimum guaranteed power for the individual CC if the sum of the transmit powers of the individual CCs exceeds a preset value, wherein the minimum guaranteed power indicates the minimum transmit power to be transmitted from the individual CCs, and the minimum guaranteed power is set for each PPPP.