Sidelink Resource Pool Power Control Under Maximum Output Limits
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Solution Overview
Problem
The issue of determining the maximum output power of a device when transmitting using multiple resource pools in 3GPP LTE and NR systems, particularly in scenarios where the device's configured maximum output power is not adequately addressed.
Innovation Solution
Determine the maximum output power of a terminal based on the maximum transmit power values for each of the multiple resource pools, ensuring compliance with regulatory limits and optimizing power usage.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the device transmits PSFCH using multiple resource pools, then the transmission coverage and reliability are improved, but the maximum output power management becomes complex and may exceed regulatory limits
Solution Approach 1:
The patent segments the PSFCH transmission into multiple resource pools with different power characteristics. Each resource pool is configured with specific maximum output power values, allowing the device to manage power consumption across multiple transmission channels independently. This segmentation enables reliable transmission while maintaining power control complexity at manageable levels.
Solution Approach 2:
The patent applies parameter changes by dynamically adjusting the maximum output power based on the selected resource pool. When multiple resource pools are configured, the device determines the maximum output power by selecting from the configured power values associated with each resource pool, thereby adapting power transmission parameters to the specific transmission scenario.
2Productivity
If the device uses multiple resource pools for PSFCH transmission, then the transmission capacity is increased, but the power consumption may exceed the terminal's maximum output power
Solution Approach 1:
The patent implements preliminary action by pre-configuring multiple resource pools with their respective maximum output power values before transmission occurs. The device determines the appropriate maximum output power in advance based on the configured resource pools, preventing power consumption from exceeding the terminal's maximum output power capability while maintaining high transmission capacity.
Solution Approach 2:
The patent applies dynamics by making the maximum output power selection adaptive rather than fixed. The device dynamically selects the maximum output power based on which resource pool is used for transmission, allowing the transmission capacity to be optimized while keeping power consumption within the terminal's maximum output power limits.
3Adaptability or versatility
If the terminal is configured with multiple resource pools, then the system flexibility is improved, but the determination of maximum output power becomes ambiguous
Solution Approach 1:
The patent implements feedback mechanisms where the device determines the maximum output power based on feedback from the configured resource pools. When multiple resource pools are configured, the device uses the feedback information about each pool's power characteristics to clearly determine the appropriate maximum output power, eliminating ambiguity while maintaining system flexibility.
Data Source
AI summary
One disclosure of the present specification provides a method. The method comprises: determining a configured maximum output power; transmitting, to another UE, on a first resource pool and a second resource pool at a same time, based on the configured maximum output power, wherein the configured maximum output power is configured, based on a maximum transmission power for the first resource pool and a maximum transmission power for the second resource pool, wherein the maximum transmission power for the first resource pool is a maximum value of transmission power when sidelink transmission is performed only on the first resource pool, wherein the maximum transmission power for the second resource pool is a maximum value of transmission power when sidelink transmission is performed only on the second resource pool.