Dynamic Carrier Subband Switching for Thermal Management
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Solution Overview
Problem
Conventional mobility management techniques in 5G and 6G wireless communication systems do not effectively account for internal conditions of user equipment, such as thermal and battery constraints, which can impact data rates and reliability, especially near the edge of cells.
Innovation Solution
The implementation of dynamic carrier subband operation for active coordination sets, where a master base station selects and coordinates carrier subbands based on user equipment conditions, allowing for dynamic switching between different sets of base stations to maintain high data rates and reliability while mitigating thermal and power constraints.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If conventional handover techniques are used for mobility management, then base station connectivity is maintained, but user equipment internal conditions such as thermal and battery constraints are not accounted for
Solution Approach 1:
The system dynamically switches between single-cell and multi-cell coordination modes based on UE internal conditions. The network device monitors thermal and battery states and adaptively adjusts the coordination set configuration, transitioning from static conventional handover to dynamic coordinated communication that responds to real-time UE status.
Solution Approach 2:
The invention changes the operational parameters of the communication system by introducing UE internal condition monitoring into the mobility management decision-making process. The network device adjusts communication parameters such as coordination set composition and carrier subband allocation based on thermal and battery condition feedback from the UE.
2Productivity
If multiple radio links are used to increase data rates, then throughput and reliability improve, but mobility management complexity increases
Solution Approach 1:
The invention segments the coordination set into a master base station and one or more secondary base stations with clearly defined roles. The master base station handles control-plane signaling and overall coordination, while secondary base stations focus on user-plane data transmission, thereby distributing complexity and simplifying mobility management.
Solution Approach 2:
Instead of having the UE manage multiple radio links and perform complex measurements for mobility, the network device (master base station) takes control by selecting and coordinating the coordination set. This inverts the traditional mobility management approach where the mobile device makes decisions, reducing UE complexity while maintaining high data rates.
3Temperature
If carrier subband switching is implemented dynamically, then thermal and power constraints are balanced, but system complexity increases
Solution Approach 1:
The UE monitors its own internal conditions (thermal and battery states) and reports them to the network device. This self-service approach allows the UE to provide feedback about its status without requiring complex network-side monitoring, enabling the network to make informed decisions about carrier subband switching based on UE-provided information.
Solution Approach 2:
The network device acts as an intermediary that receives thermal and battery condition reports from the UE and translates these conditions into appropriate carrier subband switching decisions. This intermediary role simplifies the system by centralizing the decision-making logic in the network rather than requiring complex UE-side control algorithms.
Data Source
AI summary
This document describes methods, devices, systems, and means for dynamic carrier subband operation for active coordination sets. A master base station selects a first carrier subband associated with a first Active Coordination Set (ACS) for joint communication with a user equipment (UE), coordinates the joint communication for the UE with other base stations in the first ACS, and monitors the joint communication with the UE. Based on the monitoring of the joint communication, the master base station selects a second carrier subband that is associated with a second ACS for the joint communication with the UE and coordinates with base stations associated with the second ACS to jointly communicate with the UE using the second carrier subband.