5G Secondary Cell BWP Measurement Control
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Solution Overview
Problem
In 5G networks, there is a challenge in determining which Bandwidth Part (BWP) to perform measurements on, especially in LTE-NR Dual Connectivity scenarios, where all BWPs are not necessary for measurement, leading to inefficiencies in power consumption and resource usage.
Innovation Solution
A method is introduced to determine a target BWP for secondary cells in a dormant state, allowing only necessary measurements to be performed, optimizing power consumption and resource allocation by configuring secondary cells to enter a dormant state for measurement purposes only.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If measurement is performed on all BWPs, then measurement coverage is improved, but power consumption increases
Solution Approach 1:
The patent extracts only the necessary BWP for measurement purposes from the set of all configured BWPs. By identifying and selecting a target BWP based on specific criteria (such as being the initial BWP or having valid channel state information), the system performs measurement only on the extracted subset rather than all BWPs, thereby reducing power consumption while maintaining adequate measurement coverage.
Solution Approach 2:
Instead of performing measurement on all configured BWPs (excessive action), the patent applies partial action by measuring only on the target BWP that is most relevant for current communication conditions. This partial measurement approach is sufficient for maintaining link quality and resource allocation decisions without the overhead of measuring all BWPs.
2Measurement precision
If secondary cells remain in active state for measurement, then measurement accuracy is improved, but system capacity decreases
Solution Approach 1:
The patent segments the functionality of secondary cells by introducing a dormant state that is distinct from both active and inactive states. In this segmented state, the secondary cell can perform measurement functions without maintaining full active functionality, allowing the system to achieve measurement accuracy while freeing up resources to increase overall system capacity.
Solution Approach 2:
The patent implements dynamic state transitions for secondary cells, allowing them to switch between active, dormant, and inactive states based on measurement requirements and system conditions. This dynamic approach enables the system to optimize between measurement accuracy and capacity by temporarily activating cells only when needed for measurement rather than maintaining them in a permanently active state.
3Productivity
If all secondary cells are configured for data transmission, then throughput is improved, but resource allocation efficiency decreases
Solution Approach 1:
The patent applies local quality by allowing different secondary cells to be in different states (active or dormant) based on their specific roles and current needs. Instead of uniformly configuring all secondary cells for data transmission, the system selectively activates cells based on local conditions such as channel quality, traffic demand, and measurement requirements, thereby improving resource allocation efficiency while maintaining overall throughput.
Data Source
AI summary
Provided are a measurement control method, a terminal device and a network device, the method comprising that: the terminal device determines a first secondary cell entering a first state, the first state being a state in which the terminal is able to implement measurement but is not able to execute data reception and transmission, and the first secondary cell being one amongst at least one secondary cell; determines a target bandwidth part BWP of the first secondary cell in the first state; and performs measurement on the target BWP.