UE Inter-RAT Measurement Without Gaps During NR Data Transfer
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Solution Overview
Problem
Existing wireless communication systems face inefficiencies due to measurement gaps required for inter-frequency and inter-RAT measurements, which reduce uplink or downlink data transmission and reception capabilities.
Innovation Solution
User equipment (UE) capable of performing inter-frequency and inter-RAT measurements without measurement gaps by temporarily pausing acknowledgement (ACK) and negative ACK (NACK) transmissions during signal measurement, allowing simultaneous data reception or transmission in different frequency bands.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If measurement gaps are implemented for inter-frequency and inter-RAT measurements, then measurement capability is improved, but data transmission and reception capability deteriorates
Solution Approach 1:
The patent enables continuous data transmission and reception by eliminating measurement gaps through advanced RF tuning techniques. The UE performs inter-frequency and inter-RAT measurements without interrupting its communication with the serving cell, maintaining continuous useful action in both measurement and data transmission domains
Solution Approach 2:
The patent introduces a new dimension of operation by enabling simultaneous operation in multiple frequency bands and RATs without temporal separation. This is achieved through advanced RF tuning capabilities that allow the UE to rapidly switch between frequencies and maintain measurement continuity without affecting data transmission in the serving cell
2Measurement precision
If measurement gaps are implemented for inter-frequency and inter-RAT measurements, then measurement capability is improved, but latency increases
Solution Approach 1:
By eliminating measurement gaps, the patent removes temporal interruptions from the communication flow. Data transmission and reception continue without pause, and measurements are performed in the background or rapidly during brief tuning periods, significantly reducing overall latency compared to traditional gap-based approaches
Solution Approach 2:
The patent employs preliminary RF tuning and measurement preparation techniques that allow the UE to quickly transition between frequency bands and RATs. By pre-configuring measurement parameters and maintaining readiness for rapid frequency switching, the system minimizes the time required for inter-frequency and inter-RAT measurements without requiring communication interruptions
Data Source
AI summary
A user equipment (UE) configured for operation in a 5G NR network may be capable of operating in accordance two or more radio-access technologies (RATs) including a first RAT and a second RAT. The UE may encode a UE capability information element for transmission to a serving cell indicating whether the UE has a capability for performing inter-RAT measurements without measurement gaps. When the UE indicated the capability for performing inter-RAT measurements without measurement gaps, the UE may be configured to simultaneously measure signals of the second RAT in a second frequency band while receiving data or while transmitting data in accordance with the first RAT in a first frequency band. When the UE is performing inter-RAT measurements without measurement gaps, the UE may temporarily pause transmission of acknowledgements (ACKs) and negative ACKs (NACKs) (ACK/NACKs) for the data received in accordance with the first RAT during the measurement of the signals of the second RAT.