Measurement Gap Configuration for NR Synchronization Signals
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Solution Overview
Problem
In New Radio (NR) networks, the conventional method of configuring measurement gaps based on carrier frequencies leads to incorrect configuration, resulting in inaccurate synchronization signal measurement by user equipment (UE), which decreases spectrum efficiency and network performance.
Innovation Solution
A network device determines the configuration for a measurement gap based on the frequency regions for transmitting synchronization signals from serving and neighbor cells, rather than carrier frequencies, and transmits this configuration to the UE, ensuring accurate measurement.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If the network device configures measurement gap based on carrier frequencies, then the configuration is simple, but the measurement accuracy deteriorates when synchronization signal frequency region center differs from carrier frequency
Solution Approach 1:
The patent changes the basis parameter from carrier frequency to synchronization signal frequency region center. The network device determines the frequency region center of the synchronization signal and uses this updated parameter to configure the measurement gap, ensuring the configuration accurately reflects where the synchronization signal is actually transmitted rather than where the carrier is centered.
2Loss of energy
If the network device does not configure measurement gap when carrier frequencies are the same, then resource overhead is reduced, but measurement reliability deteriorates when synchronization signal frequency regions differ
Solution Approach 1:
The patent changes the decision parameter from carrier frequency equality to synchronization signal frequency region center equality. The network device compares the frequency region centers of synchronization signals from serving and neighbor cells, and only exempts from measurement gap configuration when these centers are the same, ensuring reliable measurement decisions based on actual signal locations.
3Device complexity
If the network device configures measurement gap incorrectly, then device complexity is reduced, but spectrum efficiency deteriorates
Solution Approach 1:
The patent updates the configuration parameter from carrier frequency to synchronization signal frequency region center. By using the accurate frequency region center to determine measurement gap requirements, the system avoids incorrect configurations that would waste resources, thereby improving spectrum efficiency without significantly increasing device complexity.
Data Source
AI summary
Embodiments of the disclosure generally relate to configuring a measurement gap. A network device obtains information about a first frequency region and a second frequency region. The first frequency region is being used for transmitting a first synchronization signal from a serving cell managed by the network device, and the second frequency region is used for transmitting a second synchronization signal from a neighbor cell of the serving cell. Then, the network device determines a configuration for a measurement gap based on the first and second frequency regions, and transmits the configuration for the measurement gap to the terminal device.