Relay Node Selection with Separate Uplink and Downlink Assessment
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Solution Overview
Problem
Existing 5G systems face challenges in efficiently managing network slicing and user equipment (UE) connectivity, particularly in handling multiple access types and network functions, leading to suboptimal resource allocation and service continuity.
Innovation Solution
The implementation of enhanced 5G core network functionalities, including advanced registration and connection management, unified policy frameworks, and network slice selection mechanisms, enables efficient network slicing and UE connectivity across diverse access networks.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If relay node selection is performed without considering uplink and downlink signal qualities separately, then the selection process is simpler, but the accuracy of relay node selection deteriorates
Solution Approach 1:
The patent divides the relay node selection process into separate uplink and downlink signal quality assessments. The terminal device independently measures uplink signal quality from the relay node to the access network device, and downlink signal quality from the access network device to the relay node, then combines these separate measurements to determine the optimal relay node. This segmentation improves selection accuracy while maintaining operational simplicity.
2Measurement precision
If multiple signal quality metrics are measured and reported, then the relay node selection accuracy is improved, but the signaling overhead increases
Solution Approach 1:
The patent implements a selective reporting mechanism where the terminal device measures multiple signal quality metrics (uplink reference signal received power, downlink reference signal received power, path loss) but only reports the necessary subset to the access network device. The terminal determines relay node rankings based on these measurements and reports only the ranking information and selected relay node identifier, avoiding transmission of all raw measurement data. This partial reporting maintains selection accuracy while reducing signaling overhead.
3Reliability
If the terminal device performs comprehensive signal quality measurements for relay node selection, then the service continuity is improved, but the terminal device complexity increases
Solution Approach 1:
The patent enables the terminal device to autonomously perform comprehensive signal quality measurements and independently determine relay node rankings without requiring complex network-side coordination. The terminal self-manages the measurement of uplink and downlink signal qualities, calculates path losses, ranks candidate relay nodes, and makes the selection decision locally. This self-service approach ensures service continuity through accurate measurements while keeping the terminal device complexity manageable by using standard measurement capabilities.
Data Source
AI summary
A first wireless device transmits, to a second wireless device, a discovery message comprising a non-public network (NPN) identifier of an NPN to which the first wireless device can provide access.