UE Overheating Assistance Reporting in 5G EN-DC Systems
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Solution Overview
Problem
In 5G systems, User Equipment (UE) configured with EN-DC (dual connectivity with LTE and NR) faces challenges in reporting overheating and In-Device Coexistence (IDC) issues, as the approaches used in LTE systems are not applicable or desirable.
Innovation Solution
The UE provides overheating assistance to the network in one of two modes: Mode 1 uses legacy fields, while Mode 2 reports additional information using new fields that indicate preferences for NR SCG, allowing for more fine-grained assistance. The network can signal the UE to use Mode 2 when supported, and the UE changes modes based on network requests or capabilities.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If LTE overheating reporting approach is used in 5G EN-DC system, then UE can report overheating status, but the approach is not applicable or desirable for 5G systems
Solution Approach 1:
The patent extends LTE overheating reporting parameters to support 5G EN-DC specific configurations. The UE reports overheating assistance information that includes both LTE parameters (reduced UE category, reduced maximum number of component carriers) and 5G-specific parameters (maximum aggregated bandwidth, MIMO layers per frequency range), allowing the network to adjust radio configuration appropriately for dual connectivity scenarios
Solution Approach 2:
The overheating assistance information is divided into two operational modes: Mode 1 uses legacy LTE fields for simple overheating reporting, while Mode 2 introduces new fields for detailed 5G EN-DC specific assistance. The UE and network can select the appropriate mode based on capability and configuration, providing flexibility in handling different deployment scenarios
2Measurement precision
If Mode 2 with new fields is used for overheating assistance, then fine-grained assistance for NR SCG is achieved, but device complexity increases
Solution Approach 1:
The patent implements dynamic mode selection where the UE can switch between Mode 1 (legacy fields only) and Mode 2 (legacy fields plus new fields) based on network requests and UE capabilities. The network can signal the UE to use Mode 2 when supported, and the UE changes modes based on network requests or capabilities, providing flexibility without forcing complex operations
Solution Approach 2:
Instead of always reporting full 5G-specific overheating assistance information, the UE can report only the necessary level of detail based on the operational mode. Mode 1 provides basic overheating reporting while Mode 2 provides enhanced reporting, allowing the system to use only the required complexity level for each scenario
3Use of energy by moving object
If network adjusts radio configuration to reduce power consumption, then energy efficiency improves, but transmission performance may be affected
Solution Approach 1:
The patent implements a feedback mechanism where the UE monitors its thermal state and reports overheating assistance information to the network. The network uses this feedback to dynamically adjust radio configuration parameters such as the number of component carriers, aggregated bandwidth, and MIMO layers, creating a closed-loop system that balances power consumption and transmission performance based on real-time thermal conditions
Data Source
AI summary
The present disclosure relates to a communication method and system for converging a 5th-Generation (5G) communication system or networks beyond 5G communication system for supporting higher data rates beyond a 4th-Generation (4G) system with a technology for Internet of Things (IoT). The present disclosure may be applied to intelligent services based on the 5G communication technology and the IoT-related technology, such as smart home, smart building, smart city, smart car, connected car, health care, digital education, smart retail, security and safety services.Disclosed is a method of a User Equipment, UE, providing overheating assistance to a telecommunication network, wherein the UE is arranged to provide the overheating assistance in one of two modes, wherein: in a first mode the UE reports details related to a first set of assistance parameters; and in a second mode the UE reports details related to a second set of assistance parameters, wherein a setting of the first set of parameters depends on a setting of the second set of parameters.