NR V2X Power Allocation Across NR/LTE Uplink and Sidelink
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Solution Overview
Problem
The challenge lies in effectively allocating and distributing transmission power for an NR V2X UE when it communicates through multiple links, ensuring that the total power does not exceed its maximum capacity, particularly in scenarios involving simultaneous transmissions across different communication channels.
Innovation Solution
The proposed solution involves methods for an NR V2X UE to allocate and distribute transmission power efficiently across various communication links, including NR uplink, LTE uplink, NR sidelink, and LTE sidelink, ensuring that the total power does not exceed the maximum allowable limit.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If transmission power is increased to maintain communication quality across multiple links, then communication reliability is improved, but power consumption exceeds maximum capacity
Solution Approach 1:
The patent implements dynamic power allocation where the UE continuously monitors channel conditions, buffer status, and power headroom across multiple links, adjusting transmission power in real-time based on current communication needs and available power headroom, rather than using fixed power allocation
Solution Approach 2:
The patent changes power allocation parameters dynamically by modifying transmission power levels based on power headroom reports, channel quality indicators, and buffer status, allowing the system to adapt power distribution to match actual communication requirements and avoid excessive power consumption
2Reliability
If transmission power is allocated to maintain communication quality across multiple links, then communication reliability is improved, but device complexity increases due to power management requirements
Solution Approach 1:
The patent implements self-service power management where the UE autonomously monitors its own power headroom, channel conditions, and buffer status, and automatically adjusts transmission power without requiring complex external coordination or control mechanisms
Solution Approach 2:
The patent uses feedback mechanisms where the UE reports power headroom information to the network and receives power allocation commands, while also continuously monitoring channel quality and adjusting power based on communication performance feedback from multiple links
3Adaptability or versatility
If transmission power is distributed across multiple links, then communication versatility is improved, but power allocation difficulty increases
Solution Approach 1:
The patent segments power allocation into hierarchical levels: first allocating total power among different radio access technologies (NR/LTE) and link types (uplink/sidelink) based on priority and requirements, then distributing remaining power within each link based on channel conditions and buffer status
Solution Approach 2:
The patent applies different power allocation strategies to different links based on their specific characteristics - NR links may use different power distribution than LTE links, and uplink transmissions may have different power requirements than sidelink transmissions, optimizing each link's power usage according to its local needs
Data Source
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AI summary
The present disclosure relates to a communication method and system for converging a 5th-Generation (5G) communication system for supporting higher d ata rates beyond a 4th-Generation (4G) system with a technology for Internet of Things (IoT). The present disclosure may be applied to intelligent services base d on the 5G communication technology and the IoT-related technology, such as smart home, smart building, smart city, smart car, connected car, health care, d igital education, smart retail, security and safety services. The present disclosure provides a method and a device for allocating transmission power in a wireless communication system.