Per-Frequency Measurement Gap Configuration in Dual Connectivity
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Solution Overview
Problem
Current measurement gap configuration in dual connectivity scenarios, particularly in NE-DC and NR-NR DC, leads to unnecessary signaling and potential throughput loss due to inadequate coordination between master and secondary network nodes operating on different frequency ranges.
Innovation Solution
A method for configuring measurement gaps on a per-frequency basis, allowing the master network node to establish connections with wireless devices in dual connectivity, configuring measurement gaps for both NR and LTE networks, and enabling robust measurement gap coordination to prevent throughput loss and signaling inefficiencies.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If measurement gap configuration is implemented in dual connectivity scenarios, then measurement capability is improved, but signaling overhead and throughput loss occur due to inadequate coordination
Solution Approach 1:
The patent segments the measurement gap configuration by frequency range, allowing independent configuration for FR1 and FR2. This enables precise measurement control for each frequency range without requiring comprehensive signaling for all frequencies, thus improving measurement capability while reducing signaling overhead.
Solution Approach 2:
The master network node determines and configures measurement gaps for the secondary frequency range in advance, before the wireless device needs to perform measurements. This preliminary configuration prevents throughput loss by ensuring measurement gaps are already established, eliminating the need for additional coordination signaling during actual measurement operations.
2Measurement precision
If measurement gap configuration is implemented in dual connectivity scenarios, then measurement capability is improved, but throughput loss occurs due to inadequate coordination
Solution Approach 1:
The master network node proactively configures measurement gaps for the secondary frequency range before measurements are needed. This advance configuration ensures that measurement gaps are already in place, preventing throughput loss that would occur if gaps needed to be configured during active measurement operations.
Solution Approach 2:
The master network node acts as an intermediary that coordinates measurement gap configuration between the secondary node and the wireless device. By centralizing this coordination function, the system avoids throughput loss that would result from inadequate coordination, while the configured gaps enable necessary measurements.
3Measurement precision
If per-frequency measurement gap configuration is implemented, then measurement precision is improved, but device complexity increases
Solution Approach 1:
The patent divides measurement gap configuration into separate segments for FR1 and FR2 frequency ranges. This segmentation allows the wireless device to handle each frequency range independently with simpler logic, rather than managing a single complex configuration for all frequencies, thus improving measurement precision without proportionally increasing device complexity.
Data Source
AI summary
A method by a master network node 160 for measurement gap configuration includes establishing a connection with a wireless device 110 operating in dual connectivity with the master network node 160 and a secondary network node 160b. The master network node 160 operates on a New Radio, NR, wireless network and the secondary network node 160b operates on a Long-Term Evolution, LTE, network. The measurement gap configuration is configured on a per frequency basis for at least a first frequency and a second frequency on the NR wireless network. The measurement gap configuration is configured on a per frequency basis for the first frequency on the LTE network. The method further incudes configuring, by the master network node 160, the wireless device with at least one measurement gap for the second frequency when the master network node 160 configures a measurement that requires the at least one measurement gap.