Relay Donor Selection via RSRP and Preamble Prioritization
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Relay wireless devices face challenges in effectively servicing end-user devices due to limitations in donor access node selection, particularly when the donor access node cannot meet the relay device's needs or when determining a preferred access node from multiple nearby options.
Innovation Solution
A method and system for donor selection in relay access nodes, where each donor access node is prioritized based on radio measurements and radio resource control information, such as reference signal receive power and dedicated random access preambles, to determine the most suitable access node for connection, ensuring high-quality service to end-user devices.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Area of stationary object
If relay wireless devices are deployed at the edge of coverage areas to improve coverage, then coverage area is extended, but service quality deteriorates due to limited ability to effectively service end-user devices
Solution Approach 1:
The patent changes the selection parameters for donor access nodes by introducing a composite scoring mechanism that evaluates multiple factors including RSRP measurements, number of dedicated random access preambles, and paging cycle configurations. This multi-parameter evaluation enables relay devices at coverage edges to select optimal donor nodes, thereby maintaining service quality while extending coverage areas.
2Productivity
If relay wireless devices are deployed in crowded areas to increase throughput, then available throughput is increased, but service quality deteriorates when the donor access node cannot meet the relay device's needs
Solution Approach 1:
The patent modifies the donor selection criteria by incorporating the number of dedicated random access preambles and paging cycle configurations into the evaluation metric. This enables relay devices in crowded areas to identify donor access nodes with sufficient resource capacity, ensuring that throughput increases are maintained without compromising service quality.
3Ease of operation
If relay devices select donor access nodes based solely on radio measurements, then connection establishment is simplified, but service quality deteriorates due to inability to determine preferred donor from multiple nearby access nodes
Solution Approach 1:
The patent combines multiple selection criteria including radio measurements (RSRP), resource availability indicators (number of dedicated random access preambles), and network configuration parameters (paging cycle) into a unified donor selection mechanism. This composite approach maintains operational simplicity while significantly improving the reliability of donor node selection in multi-node environments.
Data Source
AI summary
A relay wireless device is configured to function as a relay on behalf of a donor access node. The relay wireless device determines a preferred donor access node from among a plurality of candidate donor access nodes based on a measurement of a reference signal, such as an RSRP or SINR, associated with each access node within a range of the relay wireless device. The access nodes may be prioritized based on the measurement, as well as based on a maximum number of dedicated random access preambles provided by each access node, and a default paging cycle of each access node. The access node that has the highest priority based on a good RSRP/SINR, a high number of dedicated random access preambles, and a large paging cycle, is selected as the preferred donor access node, and a connection request submitted to the preferred donor access node.