Vehicle Multi-TRP Power Allocation Using Signal Strength Feedback
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Solution Overview
Problem
Existing wireless communication systems face interference and congestion issues due to varying distances between vehicles and other devices, leading to suboptimal transmit power settings that affect signal quality and coverage.
Innovation Solution
Adjust transmit power allocation among multiple transmission and reception points (TRPs) based on received signal strength feedback signals, allowing dynamic power adjustments during resource reservations.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If fixed transmit power allocation is used among TRPs, then device complexity is reduced, but wireless communication quality deteriorates due to varying distances and interference
Solution Approach 1:
The system implements feedback mechanisms where receiving devices send feedback signals containing received signal strength information to transmitting vehicles. This feedback enables dynamic adjustment of transmit power allocation among TRPs, resolving the contradiction by allowing adaptive power optimization without requiring complex centralized control, thus improving communication quality while maintaining manageable system complexity.
Solution Approach 2:
The patent transforms static power allocation into a dynamic system where transmit power among multiple TRPs is continuously adjusted based on real-time feedback signals. This dynamic adaptation allows the system to respond to changing channel conditions, device positions, and interference levels, thereby improving wireless communication quality without requiring overly complex predetermined allocation schemes.
2Reliability
If transmit power is increased to improve coverage, then signal reception improves, but energy consumption increases
Solution Approach 1:
The system applies different transmit power levels to different TRPs based on local conditions such as distance to receiving devices and channel quality. Instead of uniformly increasing power across all TRPs, the system selectively allocates higher power only to TRPs serving devices that require enhanced coverage, thereby improving signal reception quality while minimizing overall energy consumption.
Solution Approach 2:
The patent dynamically changes transmit power parameters among multiple TRPs based on feedback signals containing received signal strength information. This allows the system to optimize power distribution by adjusting power levels according to actual channel conditions, ensuring adequate signal reception quality while avoiding unnecessary energy consumption from excessive power transmission.
3Area of stationary object
If multiple TRPs transmit simultaneously, then coverage area is expanded, but interference increases due to congested networks
Solution Approach 1:
The system dynamically adjusts transmit power parameters among multiple TRPs based on feedback signals containing received signal strength information. By changing power levels according to actual channel conditions, the system can expand coverage area while controlling interference - increasing power where needed for coverage and reducing it where interference would be problematic.
Solution Approach 2:
The implementation of feedback mechanisms allows the system to monitor received signal strength and adjust TRP transmit powers accordingly. This feedback loop enables the system to expand coverage area by activating multiple TRPs while simultaneously controlling interference levels through real-time power adjustment based on actual reception conditions at receiving devices.
Data Source
AI summary
In some aspects of the disclosure, a method of wireless communication includes performing a first wireless transmission using a plurality of transmission and reception points (TRPs) of a vehicle. The first wireless transmission is performed based on a first transmit power allocation among the plurality of TRPs. The method further includes, in response to the first wireless transmission, receiving one or more feedback signals indicating a receive status of the first wireless transmission at one or more devices. The method further includes performing a second wireless transmission using the plurality of TRPs based on a second transmit power allocation among the plurality of TRPs. The second transmit power allocation is determined based on at least one received signal strength of the one or more feedback signals.