Conditional Cell Handover Configuration Within UE Capability Limits
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Solution Overview
Problem
Existing wireless communication systems face challenges in improving cell handover performance, particularly in 5G and beyond networks, to support the increasing number of connected devices and diverse applications, including enhanced mobile broadband, ultra-reliable low-latency communications, and massive machine-type communications, which require efficient handover mechanisms to manage the exponential growth in wireless communication services.
Innovation Solution
A method involving a first node receiving configuration information from a second node and transmitting enhanced configuration information to user equipment (UE) for conditional physical cell addition or change (S-CPAC), with the second node selecting candidate cells and determining execution conditions, and a controller managing the transceiver to perform these operations within UE capabilities.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If multiple candidate cells are configured for conditional reconfiguration to improve handover reliability, then the number of candidate cells increases, but it may exceed UE capability limits
Solution Approach 1:
The patent implements dynamic adjustment of the candidate cell list by the first node based on UE capability feedback. The first node receives capability information from the UE indicating the maximum number of candidate cells it can handle, and dynamically configures the candidate cell list to match this capability, ensuring optimal handover reliability without exceeding device limits.
Solution Approach 2:
The patent establishes a feedback mechanism where the UE reports its capability regarding the maximum number of candidate cells it can process. The first node uses this feedback information to adjust the configuration of the candidate cell list, creating a closed-loop system that adapts to actual device capabilities and resolves the contradiction between reliability and device complexity.
2Adaptability or versatility
If conditional reconfiguration with multiple candidate cells is implemented to support diverse applications, then service versatility improves, but configuration complexity increases
Solution Approach 1:
The patent segments the handover configuration into multiple independent parts: UE capability reporting, candidate cell selection, conditional reconfiguration parameters, and execution conditions. This segmentation allows each component to be optimized independently, supporting diverse services while managing configuration complexity through modular design.
Solution Approach 2:
The patent creates a universal configuration framework that can handle multiple services and scenarios through a standardized interface. The conditional reconfiguration mechanism with candidate cells serves multiple purposes including handover, load balancing, and service continuity, reducing overall configuration complexity while enhancing service versatility.
Data Source
AI summary
The disclosure relates to a fifth generation (5G) or sixth generation (6G) communication system for supporting a higher data transmission rate. A method performed by a first node in a communication system includes receiving a first message from a second node, the first message including at least one of first configuration information or second configuration information, and transmitting a second message to a user equipment (UE), the second message including third configuration information being determined based on at least one of the first configuration information or the second configuration information.