PCI Limit Configuration for UE Inter-Cell Mobility Memory Control
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Solution Overview
Problem
Existing wireless communications systems face challenges in efficiently managing and configuring physical cell identifiers (PCIs) for user equipment (UE) to optimize memory usage and enhance inter-cell mobility operations.
Innovation Solution
The UE is configured with a maximum number of PCIs and selected PCIs for inter-cell mobility operations, with configurations determined based on capability reports or predefined rules, allowing for efficient storage and management of PCI configurations.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the UE is configured with multiple candidate cells and stored cell configurations for inter-cell mobility operations, then the inter-cell mobility performance is improved, but the memory consumption at the UE increases
Solution Approach 1:
The patent segments the PCI configuration management into two distinct sets: configured PCIs (candidate cells) and selected PCIs (active cells). This segmentation allows the UE to maintain a limited number of stored configurations while still having access to multiple candidate cells for mobility operations, thereby reducing memory consumption while preserving inter-cell mobility performance.
Solution Approach 2:
The patent implements dynamic configuration where the UE can be reconfigured with different sets of PCIs based on mobility needs. The network can dynamically adjust the configured PCI set and selected PCI set, allowing the UE to adapt its memory usage to current operational requirements while maintaining mobility capabilities.
2Reliability
If the UE stores cell configurations for multiple PCIs, then the inter-cell mobility operations are enhanced, but the device complexity increases
Solution Approach 1:
By dividing PCI management into configured and selected sets, the patent simplifies the UE's configuration management logic. The UE only needs to store and manage a limited number of selected PCIs actively, while configured PCIs can be managed more simply as candidate pools, reducing overall device complexity while enhancing mobility operations.
Solution Approach 2:
The network acts as an intermediary in managing PCI configurations. Instead of the UE independently managing complex PCI sets, the network provides configuration assistance by indicating which PCIs should be configured and selected, thereby reducing UE complexity while maintaining enhanced mobility operations.
Data Source
AI summary
Methods, systems, and devices for wireless communications are described. A user equipment (UE) may store configurations for candidate physical cell identifiers (PCIs) that the UE may select from for inter-cell mobility. A base station or a UE or both may identify a first configuration indicating a number of configured PCIs for inter-cell mobility operations. The base station or the UE or both may identify a second configuration indicating a number of selected PCIs for inter-cell mobility operations. In some cases, the selected PCIs may be a subset of the configured PCIs. Identifying the number of configured PCIs and the number of selected PCIs by the base station and UE may be based on a capability report configured by the UE. The UE and the base station may perform an inter-cell mobility operation based on stored cell configurations associated with the configured PCIs and the selected PCIs.