Uplink Grant Allocation via Power Headroom Comparison
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Solution Overview
Problem
Wireless user devices do not efficiently and effectively transmit over multiple wireless uplinks based on power headroom for wireless access nodes, and wireless access nodes do not efficiently support simultaneous wireless uplinks based on power headroom.
Innovation Solution
A primary wireless access node receives primary power headroom from User Equipment (UE) and compares it to secondary power headroom received from a secondary access node. Based on this comparison, the primary access node determines primary and secondary uplink grant amounts and transfers the secondary uplink grant amount to the secondary access node, allowing both nodes to grant uplink resources to the UE efficiently.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If wireless user devices transmit over multiple wireless uplinks simultaneously, then data throughput and network utilization are improved, but power consumption increases and power management becomes inefficient
Solution Approach 1:
The patent dynamically changes transmission parameters including power headroom reporting thresholds and uplink grant allocation based on channel conditions and power availability. The system adjusts transmit power levels, modulation schemes, and resource allocation to optimize throughput while managing power consumption across multiple uplinks.
Solution Approach 2:
The system implements dynamic power headroom reporting where the UE continuously monitors and reports power headroom information to multiple access nodes. The uplink grants are dynamically adjusted based on real-time power headroom status, channel conditions, and traffic requirements, enabling adaptive resource allocation that balances throughput and power consumption.
2Device complexity
If wireless access nodes independently manage uplink resources without coordination, then device complexity is reduced, but uplink resource allocation efficiency deteriorates
Solution Approach 1:
The patent merges uplink resource management functions by introducing a primary access node that coordinates with secondary access nodes. The primary node consolidates power headroom information from the UE and makes centralized uplink grant decisions, while secondary nodes execute coordinated transmissions. This reduces overall system complexity while improving resource allocation efficiency through coordinated multi-point operation.
Solution Approach 2:
The primary access node acts as an intermediary between the UE and secondary access nodes. It receives power headroom reports from the UE, determines appropriate uplink grants, and transfers grant information to secondary nodes. This intermediary role simplifies the management architecture while enabling efficient coordinated uplink resource allocation across multiple access nodes.
Data Source
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AI summary
A primary wireless access node (111) receives primary power headroom for User Equipment (UE) (110). A secondary wireless access node (112) receives secondary power headroom for the UE (110) and transfers the secondary power headroom to the primary wireless access node (111). The primary wireless access node (111) compares the power primary headroom to the secondary power headroom to determine a primary uplink grant amount and a secondary uplink grant amount for the UE (110). The primary wireless access node (111) grants primary uplink resources to the UE (110) based on the primary uplink grant amount. The secondary wireless access node (112) grants secondary uplink resources to the UE (110) based on the secondary uplink grant amount. The wireless access nodes (111, 112) receive user data from the UE (110) based on the uplink grant amounts.