Compressed Mode Frame Configuration for UMTS
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
In UMTS cellular radio systems, the UTRAN sometimes schedules three or more consecutive compressed mode frames, leading to incorrect signal to interference ratio calculations and potential device failure due to transmission delays.
Innovation Solution
A method and apparatus for configuring compressed mode operation to suppress non-activation instructions and insert normal frames in transmission gap patterns, preventing device resets and maintaining continuous operation by detecting and mitigating sequences with three or more consecutive compressed mode frames.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If the UTRAN schedules three or more consecutive compressed mode frames, then inter-frequency and inter-RAT measurements can be performed, but incorrect signal to interference ratio calculations occur and device failure may result
Solution Approach 1:
The patent applies preliminary anti-action by detecting the scheduling of three or more consecutive compressed mode frames before they cause device failure, and preemptively inserting a normal frame to prevent the harmful effect. The UE monitors the transmission gap pattern sequence and identifies when consecutive compressed mode frames would occur, then activates a normal frame in advance to counteract the potential signal to interference ratio calculation error and device reset.
Solution Approach 2:
The patent implements preliminary action by having the UE detect and monitor the transmission gap pattern sequence scheduled by the UTRAN before the harmful sequence occurs. The system proactively identifies when three or more consecutive compressed mode frames are scheduled and prepares to insert a normal frame to prevent the adverse effect, rather than reacting after the device fails.
2Adaptability or versatility
If compressed mode frames are used for measurements, then transmission gaps are created for inter-frequency and inter-RAT measurements, but transmission delays occur and device resets are triggered
Solution Approach 1:
The patent applies segmentation by dividing the transmission gap pattern sequence into manageable units and monitoring each sequence individually. When three or more consecutive compressed mode frames are detected, the system segments the sequence by inserting a normal frame, thereby breaking the harmful continuous compressed mode sequence into safer segments that prevent device reset while still allowing measurements to occur.
3Measurement precision
If the UE activates compressed mode pattern sequence, then measurements on other frequencies are enabled, but incorrect signal to interference ratio calculations lead to call drops
Solution Approach 1:
The patent implements feedback by having the UE continuously monitor the transmission gap pattern sequence and detect when three or more consecutive compressed mode frames are scheduled. This feedback mechanism triggers the insertion of a normal frame to correct the impending signal to interference ratio calculation error, thereby maintaining communication continuity and preventing call drops.
Data Source
AI summary
A method and apparatus for configuring compressed mode operation comprises detecting a compressed mode pattern or pattern sequence scheduling three or more consecutive compressed mode frames and taking appropriate mitigation action. In a first aspect a non activation construction is suppressed and the compressed mode pattern sequence is activated. In the second aspect if a pattern or sequence scheduling three or more consecutive compressed mode frames is identified, activation is suppressed. In a third aspect if such a patent or sequence is identified, a normal frame is inserted in the pattern sequence replacing a compressed mode frame.