UE Measurement Gap Adaptation for MBMS Signal Decoding
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Solution Overview
Problem
Wireless communication systems face interruptions in multimedia broadcast or multicast services due to measurement gaps configured for intra-radio access technology (IRAT) or inter-frequency cell measurements, which negatively affect audio, video playback, and file downloads.
Innovation Solution
User equipment (UE) determines a set of parameters related to its state, such as mobility, signal-to-noise ratio, and block error rate, to decide whether to decode signals during measurement gaps instead of performing IRAT or inter-frequency cell measurements, thereby minimizing service interruptions.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If measurement gaps are configured for IRAT or inter-frequency cell measurements, then network measurement capability is improved, but multimedia broadcast or multicast service continuity deteriorates
Solution Approach 1:
The patent implements dynamic behavior where the UE selectively decides whether to perform measurements or decode MBMS signals during measurement gaps based on evaluated parameters. The measurement gap usage is made flexible and adaptive rather than fixed, allowing the system to switch between measurement mode and service reception mode based on current conditions.
Solution Approach 2:
The patent changes the operational state parameter of the measurement gap from a fixed measurement-only period to a conditional period where the UE can either measure or decode MBMS signals. This parameter change is based on evaluating multiple factors including service importance, measurement urgency, and signal conditions.
2Adaptability or versatility
If measurement gaps are used for IRAT or inter-frequency cell measurements, then network mobility management is improved, but service interruption increases
Solution Approach 1:
The patent applies partial action by allowing measurements to be performed only when necessary, rather than during every measurement gap. The UE evaluates whether measurements are truly needed based on current service requirements and network conditions, performing measurements only in some measurement gaps rather than all of them, thereby reducing service interruptions.
3Reliability
If the UE decodes MBMS signals during measurement gaps, then service continuity is improved, but measurement accuracy may deteriorate
Solution Approach 1:
The patent implements a feedback mechanism where the UE continuously evaluates parameters including service importance, measurement urgency, signal quality, and current state. Based on this feedback evaluation, the UE makes intelligent decisions about whether to prioritize measurements or service decoding in each measurement gap, ensuring that neither function consistently degrades.
Data Source
AI summary
Certain aspects of the present disclosure generally relate to wireless communication. In some aspects, a wireless communication device may determine, when involved in a multimedia broadcast or multicast service, a set of parameters relating to the state of the wireless communication device. In some aspects, the wireless communication device may determine to decode a signal associated with the multimedia broadcast or multicast service during a measurement gap based at least in part on the set of parameters. In some aspects, the measurement gap may be a gap configured for performing an intra-radio access technology (IRAT) or inter-frequency cell measurement.