Carrier Aggregation Measurement Switching for SCC Activation
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
The activation of an SCC in a terminal device affects its measurement capability in a measurement window-free mode, leading to impaired performance in cell measurement.
Innovation Solution
A network device configures an SCC and a first measurement window, enabling the terminal device to switch from measurement window-free to measurement window-based cell measurement, using specific information exchanges to activate or deactivate these components as needed.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the terminal device performs cell measurement in measurement window-free measurement manner, then measurement capability is maintained, but after SCC activation the measurement capability is affected and cannot measure neighboring cells
Solution Approach 1:
The patent implements dynamic switching between measurement window-free measurement mode and measurement window measurement mode based on SCC activation state. The terminal device can adaptively change measurement modes: using measurement window-free mode when SCC is not activated, and switching to measurement window mode when SCC is activated, thereby maintaining measurement capability across different operational states
Solution Approach 2:
The patent changes the measurement mode parameter based on SCC activation status. By detecting whether SCC is activated, the terminal device adjusts the measurement configuration parameter (measurement window presence) to maintain appropriate measurement capability for the current operational state
2Reliability
If the terminal device switches to measurement window measurement manner after SCC activation, then neighboring cell measurement is enabled, but data transmission in serving cell is interrupted during measurement window
Solution Approach 1:
The patent implements periodic measurement windows at specifically configured time intervals rather than continuous measurement. The measurement window occurs periodically with defined duration and spacing, allowing data transmission to continue during non-measurement periods while still enabling neighboring cell measurement at regular intervals
Solution Approach 2:
The patent dynamically configures measurement window parameters (timing, duration, frequency) to balance measurement needs with data transmission requirements. The network device can adjust measurement window characteristics based on traffic conditions and measurement priorities, optimizing the trade-off between measurement capability and transmission efficiency
3Reliability
If the terminal device uses multiple radio frequency channels for inter-frequency measurement, then measurement capability is improved, but device complexity and power consumption increase
Solution Approach 1:
The patent makes a single radio frequency channel perform multiple functions by enabling it to switch between serving cell communication and inter-frequency measurement. The same RF channel is used for both data transmission and measurement tasks at different time periods, eliminating the need for dedicated separate measurement RF channels and reducing overall device complexity
Data Source
AI summary
A measurement configuration method includes A network device that sends first information to a terminal device. The first information includes configuration information of a secondary component carrier (SCC). The network device sends second information to the terminal device. The second information includes configuration information of a first measurement window and enables the terminal device to switch, when supporting carrier aggregation CA, from performing cell measurement in a measurement window-free measurement manner to performing cell measurement using the first measurement window. A carrier included in the CA includes the SCC configured based on the first information.