Scheduling Node False SR Detection Prevention
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Solution Overview
Problem
In wireless communication networks, schedulers may incorrectly allocate resources to mobile terminals due to interference from strong signals, leading to false detection of Scheduling Requests (SRs) in SR resources, especially in scenarios with poor radio channel quality or Discontinuous Reception (DRX) mode, causing resource wastage and bottlenecks in scheduling capacity.
Innovation Solution
A method and scheduling node that detect interference from strong SRs by measuring signal magnitude or SINR, delaying scheduling of affected mobile terminals until a later occasion to avoid incorrect allocations, and dynamically adjusting thresholds based on the radio environment to prevent false SR detections.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If the scheduler allocates resources based on SR detection in SR resources, then mobile terminals can be scheduled for data transmission, but false detection of SRs due to interference from strong signals leads to incorrect resource allocation
Solution Approach 1:
The patent applies preliminary action by performing interference detection and signal magnitude measurement before making scheduling decisions. The scheduler measures the magnitude of signals in SR resources and identifies potential interference sources ahead of time, then adjusts scheduling accordingly to prevent false SR detections. This advance detection mechanism resolves the contradiction by ensuring reliable SR detection while maintaining scheduling productivity.
2Quantity of substance
If the scheduler uses multiple SR resources with different cyclic shifts and orthogonal sequences to increase allocation capacity, then more UEs can be scheduled simultaneously, but interference between SR resources increases the risk of false detection
Solution Approach 1:
The patent implements feedback by continuously monitoring signal magnitudes and interference levels across all SR resources. When interference is detected in certain SR resources, the scheduler adjusts scheduling decisions based on this feedback information, avoiding false detections while maintaining the ability to utilize multiple SR resources for increased allocation capacity.
3Productivity
If the scheduler allocates SR resources in all TTIs to maximize resource utilization, then scheduling efficiency is improved, but false SR detections due to interference occur more frequently
Solution Approach 1:
The patent applies preliminary action by measuring signal magnitudes and detecting interference in SR resources before making scheduling allocations. This advance detection prevents wasting time on incorrect scheduling decisions while maintaining continuous SR resource allocation for maximum utilization efficiency.
Data Source
AI summary
The invention relates to a scheduling node and a method at the scheduling node in a wireless communication network of scheduling mobile terminals submitting Scheduling Requests (SRs) in SR resources. The invention further relates to a computer program performing the method according to the present invention, and a computer program product comprising computer readable medium having the computer program embodied therein. A method at a scheduling node in a wireless communication network of scheduling mobile terminals submitting Scheduling Requests (SRs) in SR resources is provided. The method comprises detecting that an SR received from a first mobile terminal in a first SR resource is indicated to interfere with at least a second SR resource, scheduling the first mobile terminal at a first scheduling occasion and awaiting scheduling of a second mobile terminal associated with the second SR resource at least until a second scheduling occasion.