Cell Reselection Priority Preservation in Dual-Connectivity Networks
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Solution Overview
Problem
In communication networks, especially in dual-connectivity modes, cell reselection procedures lead to excessive signaling and handover, causing significant processing and signaling loads, particularly when prioritizing small cells over macro cells, which can result in inefficient data transmission and increased data interruption windows.
Innovation Solution
The implementation of a dedicated cell reselection priority configuration with a preservation scope indication is provided, where the communication element maintains cell reselection priority for macro cells within a specified scope, reducing unnecessary handovers and signaling loads by prioritizing macro-cell layer connections in dual-connectivity scenarios.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If cell reselection priority is assigned to small cells in dual-connectivity mode, then small cell utilization is improved, but signaling load and handover events increase excessively
Solution Approach 1:
The patent applies local quality by differentiating cell reselection behavior based on connectivity mode. In dual-connectivity mode, macro cells are preserved with higher priority to maintain stable connectivity, while in standalone mode small cells can be prioritized. This localized differentiation resolves the contradiction by applying appropriate priority rules in specific contexts rather than universally.
Solution Approach 2:
The patent implements dynamic cell reselection priority adjustment based on the communication element's connectivity mode. The network can dynamically switch between prioritizing macro cells (in dual-connectivity) and small cells (in standalone mode), allowing adaptive response to changing network conditions and reducing unnecessary handovers while maintaining small cell utilization where appropriate.
2Productivity
If cell reselection priority is assigned to small cells, then network capacity is improved, but data interruption windows increase
Solution Approach 1:
The patent applies local quality by implementing context-dependent priority rules. In dual-connectivity mode where macro cells provide stable backbone connectivity, small cell reselection is restricted to avoid interruptions. In standalone mode where small cells are the primary access, reselection is encouraged for capacity utilization. This resolves the contradiction by applying appropriate priorities in specific operational contexts.
3Productivity
If frequent cell reselection is performed to utilize small cells, then spectral efficiency is improved, but processing load increases
Solution Approach 1:
The patent implements dynamic adjustment of cell reselection behavior based on connectivity mode. In dual-connectivity mode, reselection to small cells is restricted to reduce processing load. In standalone mode, normal reselection procedures continue to optimize spectral efficiency. This dynamic contextual approach resolves the contradiction by balancing efficiency optimization with processing load management.
Data Source
AI summary
An apparatus comprising at least one processing circuitry, and at least one memory for storing instructions to be executed by the processing circuitry, wherein the at least one memory and the instructions are configured to, with the at least one processing circuitry, cause the apparatus at least: to prepare configuration information regarding cell reselection in a communication network for at least one communication element capable of communicating in a multi-connectivity communication mode, wherein the configuration information comprises at least one preservation scope indication related to at least one cell reselection priority indication which indicates that priority is to be assigned to a first type of cells of the communication network for cell reselection, compared to other types of cells of the communication network, wherein the at least one preservation scope indication indicates at least one cell across which the at least one cell reselection priority indication is to be maintained, and to provide the configuration information for configuring the at least one communication element capable of communicating in the multi-connectivity communication mode.