Adaptive SRB Code Rate Adjustment for RAN Resource Optimization
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Solution Overview
Problem
Existing radio access network (RAN) technologies determine a fixed code rate for communication between RAN nodes and user equipment (UE) based on static values, leading to inefficient resource usage in varying radio frequency conditions, resulting in excessive resource utilization during good conditions and insufficient resource utilization during poor conditions, causing packet loss and retransmissions.
Innovation Solution
Implement adaptive resource handling by determining the radio frequency (RF) condition between the RAN node and UE, adjusting the code rate based on reported RF conditions, and generating a signal radio bearer (SRB) message with the adjusted code rate to optimize resource allocation dynamically.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a fixed code rate is used for communication between RAN node and UE, then the configuration is simple and reliable, but resource utilization is inefficient in varying RF conditions
Solution Approach 1:
The patent implements dynamic code rate adjustment by transitioning from a fixed code rate configuration to a dynamic one that adapts to changing RF conditions. The RAN node continuously monitors RF conditions and adjusts the code rate accordingly, allowing the system to optimize resource allocation in real-time while maintaining communication reliability through feedback mechanisms.
Solution Approach 2:
The patent changes the code rate parameter dynamically based on RF conditions. By monitoring parameters such as signal strength and interference levels, the system adjusts the code rate parameter to match current channel conditions, thereby optimizing the balance between resource utilization efficiency and communication reliability.
2Productivity
If a higher code rate is used in good RF conditions, then resource utilization efficiency improves, but packet loss increases in poor RF conditions
Solution Approach 1:
The patent employs feedback mechanisms where the UE reports RF conditions back to the RAN node. Based on this feedback, the RAN node adjusts the code rate dynamically, increasing it when RF conditions are good to maximize resource utilization efficiency, and decreasing it when conditions deteriorate to prevent packet loss and maintain reliability.
Solution Approach 2:
The system dynamically adjusts the code rate based on real-time RF conditions rather than using a static high code rate. This dynamic adaptation allows the system to achieve high productivity in good conditions while maintaining reliability in poor conditions through automatic code rate reduction.
3Reliability
If a lower code rate is used in poor RF conditions, then packet loss is reduced, but resource utilization efficiency decreases
Solution Approach 1:
The patent implements dynamic code rate adjustment that responds to improving RF conditions. When conditions deteriorate, the system automatically reduces the code rate to maintain reliability. When conditions improve, the code rate is increased to maximize resource utilization efficiency, creating a dynamic balance between these two parameters.
Solution Approach 2:
The system dynamically changes the code rate parameter based on monitored RF conditions. By adjusting this critical parameter in response to channel quality variations, the system optimizes the trade-off between maintaining low packet loss rates and maximizing resource utilization efficiency across varying operational conditions.
Data Source
AI summary
A method for adaptive signal radio bearer (SRB) resource handling by a radio access network (RAN) node includes: sending a first message to a user equipment (UE); receiving a second message from the UE in response to the first message, the second message including one or more parameters indicating a radio frequency (RF) condition between the RAN node and the UE, the RF condition reported by the UE; adjusting a code rate for the UE based at least in part on the RF condition between the RAN node and the UE; generating a SRB message using the adjusted code rate; and sending the SRB message to the UE or to one or more other UEs.