Dual Connectivity Measurement Gap Coordination
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Solution Overview
Problem
In LTE-NR dual connectivity, existing solutions cause long service interruptions during inter-frequency measurements due to the lack of specified cooperation between master and secondary base stations for configuring measurement gaps, affecting user equipment communication experience.
Innovation Solution
A method where a master base station determines and configures a secondary network measurement configuration and gap with the secondary base station, allowing the user equipment to perform measurements with reduced service interruption by maintaining communication with the master base station, without requiring changes to the LTE baseband circuit of the user equipment.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If the master base station configures a measurement gap for inter-frequency measurement in dual connectivity, then the UE can perform measurement on target inter frequency, but communication with master and secondary base stations is interrupted during the gap
Solution Approach 1:
The patent segments the measurement gap configuration into two separate gaps: one configured by the master base station for master network measurements, and another configured by the secondary base station for secondary network measurements. This segmentation allows the UE to perform measurements on different frequencies without requiring a single long gap that interrupts all communications, thereby reducing overall service interruption time while maintaining measurement precision.
Solution Approach 2:
The patent implements dynamic measurement gap configuration where the secondary base station determines the measurement gap based on the UE's measurement requirements and the current communication state. The gap configuration is adapted dynamically to minimize service interruption while ensuring measurement accuracy, rather than using a fixed or overly conservative gap duration.
2Adaptability or versatility
If the master base station and secondary base station configure their own NR measurement configuration independently, then each base station can optimize its own measurement parameters, but an NR measurement function needs to be added into the LTE baseband circuit of the UE
Solution Approach 1:
The patent introduces the secondary base station as an intermediary that receives measurement configuration requests from the master base station and generates the appropriate NR measurement configuration. This intermediary approach allows the LTE baseband circuit to remain unchanged while still enabling NR measurement functionality through coordinated configuration between base stations, avoiding the need to add complex NR measurement functions to the LTE baseband circuit.
3Ease of operation
If the existing solution where the master base station configures the GAP to be applied to all serving cells is followed, then measurement configuration is simplified, but a long period of service interruption is caused and communication experience of the UE is affected
Solution Approach 1:
The patent divides the measurement gap configuration into separate gaps for master and secondary networks, allowing measurements to be performed more efficiently. Instead of applying a single comprehensive gap to all serving cells, the segmented approach enables shorter, more targeted gaps that reduce service interruption while maintaining measurement capability.
Solution Approach 2:
The patent changes the measurement gap parameters by introducing separate gap configurations with different durations and timing for master and secondary networks. This parameter differentiation allows optimization of each gap independently, reducing the overall service interruption period while maintaining ease of configuration through standardized procedures.
Data Source
AI summary
Measurement configuring method and device for dual connectivity, measuring method and device for dual connectivity, scheduling method and device for dual connectivity, storage medium, base station and terminal are provided. The measurement configuring method includes: after an RRC connection is set up with a UE, a master base station sending master network measurement configuration to the UE; determining first secondary network measurement configuration for a secondary base station; sending to the secondary base station a dual connectivity configuration request which comprises the first secondary network measurement configuration; and receiving second secondary network measurement configuration and a secondary network measurement gap configured by the secondary base station, wherein the secondary network measurement gap is determined based on the first secondary network measurement configuration and the second secondary network measurement configuration. NR measurement may be executed with a shorter time period of service interruption without changing an LTE baseband circuit of UE.