Base Station Handover for UE Thermal Management
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Solution Overview
Problem
In LTE networks, User Equipment (UE) experiences high temperatures during high data transmission, leading to potential service interruptions due to excessive CPU load, which existing technologies fail to adequately address through base station handover mechanisms.
Innovation Solution
A method and system for base station handover that involves receiving high-temperature indication information from UE, adjusting transmission configuration settings, such as reducing the number of antennas or modulation coding modes, to lower data transmission rates, thereby reducing the UE's operating load and temperature, and sending service data based on these settings.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If high-level MIMO mode, multi-carrier aggregation mode, or high-level modulation coding mode is configured for UE, then data transmission rate is improved, but UE temperature increases excessively
Solution Approach 1:
The patent dynamically adjusts transmission configuration parameters (MIMO mode, carrier aggregation, modulation coding) based on UE temperature feedback. When temperature exceeds thresholds, the system transitions from high-performance configurations to lower-power configurations, and resets to original configurations when temperature normalizes, creating a dynamic adaptation mechanism that resolves the contradiction between transmission rate and temperature control
Solution Approach 2:
The system changes physical transmission parameters (number of antennas, carrier aggregation level, modulation order) in response to temperature conditions. By modifying these parameters based on thermal state, the system can reduce power consumption and heat generation while maintaining acceptable transmission performance, thus resolving the contradiction between high data rate and temperature control
2Temperature
If transmission configuration information is reduced to lower UE temperature, then UE temperature is improved, but data transmission rate decreases
Solution Approach 1:
The patent implements a feedback mechanism where the UE monitors its own temperature and sends temperature indication information back to the network. This feedback enables the base station to make informed decisions about transmission configuration adjustments, ensuring that rate reductions are applied only when necessary and at appropriate levels, thus minimizing impact on productivity while achieving temperature control
Solution Approach 2:
The system applies partial adjustments to transmission configuration rather than complete degradation. By selectively reducing certain parameters (e.g., lowering modulation order from 64QAM to 16QAM, or reducing MIMO layers) while maintaining others, the system achieves sufficient temperature reduction with minimal impact on overall data transmission rate
3Temperature
If transmission configuration is adjusted based on temperature, then UE temperature control is improved, but system complexity increases
Solution Approach 1:
The UE performs self-monitoring of its temperature and autonomously determines when temperature thresholds are exceeded. The UE then sends temperature indication information to the network, which triggers the configuration adjustment process. This self-service approach simplifies the overall system complexity by distributing the temperature monitoring function to the UE rather than requiring complex centralized control
Solution Approach 2:
The system pre-configures multiple transmission configuration options corresponding to different temperature conditions. When temperature indication information is received, the base station can quickly switch between pre-defined configurations rather than calculating optimal parameters in real-time. This preliminary preparation reduces the complexity of real-time decision-making while maintaining effective temperature control
Data Source
AI summary
A method for base station handover includes: receiving a Handover Request message sent by a mobility management entity (MME)), to which a destination base station is connected, via an S1 interface, wherein the Handover Request message carries UE excessively high-temperature indication information; sending a Handover Request Acknowledge message to the MME via the S1 interface, so that the MME sends a Handover Command message to a source base station of the UE; and setting transmission configuration information for the UE based on the UE excessively high-temperature indication information, wherein a data transmission rate corresponding to the set transmission configuration information is lower than a maximum data transmission rate that the destination base station can provide for the UE.