Wireless Terminal Power Headroom Reporting and Thermal Cell Management
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Solution Overview
Problem
In wireless communication systems, particularly in 5G networks, there are challenges related to overheating of user equipment due to high-performance transmission configurations, as well as the need for efficient cell reselection, activation/deactivation of cells, and reporting of power headroom in scenarios involving multiple transmission technologies.
Innovation Solution
The proposed solution involves a method where a base station provides priority information to user equipment for cell reselection, processes capability information to mitigate overheating, activates and deactivates cells based on transmission time units, and reports multiple types of power headroom using various uplink transmission technologies.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If high-performance transmission configurations are used in 5G networks, then data transmission capability is improved, but user equipment overheating occurs
Solution Approach 1:
The patent implements dynamic cell activation and deactivation based on traffic conditions and thermal states. The base station receives thermal state information from user equipment and dynamically adjusts the set of activated cells, transitioning from static high-performance configuration to dynamic adaptation that reduces processing load when overheating occurs, thereby resolving the contradiction between transmission capability and temperature control
Solution Approach 2:
The system changes operational parameters by adjusting the number and state of active cells based on thermal feedback. When user equipment reports elevated temperature, the base station modifies transmission parameters by deactivating certain cells or reducing their activity, thereby changing the operational state from high-performance to thermally-safe configuration
2Productivity
If multiple cells are activated for high data rates, then transmission performance is improved, but device complexity increases
Solution Approach 1:
The patent segments the cell activation decisions by introducing thermal state as a segmentation criterion. Different cell sets are activated based on thermal states (normal, warm, hot), creating segmented activation policies that simplify the overall control logic while maintaining high performance when conditions allow
Solution Approach 2:
The system dynamically adjusts cell activation states based on real-time thermal feedback, transitioning between different cell configuration sets. This dynamic approach replaces static complex multi-cell activation with adaptive cell selection that maintains performance while reducing complexity under thermal constraints
3Productivity
If continuous transmission is maintained for high productivity, then data throughput is improved, but energy consumption increases
Solution Approach 1:
The patent implements periodic thermal state reporting and cell activation adjustment. Instead of continuous high-power transmission, the system periodically assesses thermal state and adjusts cell activation accordingly, introducing idle periods or reduced-activity periods when thermal thresholds are exceeded, thereby reducing energy consumption while maintaining throughput during acceptable thermal conditions
Data Source
AI summary
Various embodiments of the present disclosure relate to a method for transmitting and receiving data in a wireless communication system. A method by which a terminal transmits a power headroom report (PHR) in a wireless communication system, according to one embodiment of the present disclosure, can comprise the steps of: receiving signaling information including at least one indicator indicating PHR reporting for at least one cell among cells for a dual connectivity operation; and transmitting at least one PHR for the at least one cell corresponding to the at least one indicator. The at least one cell can be a primary cell (Pcell) serving the terminal and/or a primary secondary cell (PScell) serving the terminal.