Cell Access Restriction for Energy-Saving Networks
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Solution Overview
Problem
Existing access control mechanisms in energy saving networks fail to effectively differentiate between new and legacy UEs, leading to inefficiencies in resource allocation and energy consumption, particularly when legacy UEs attempt to access cells in sleep states or non-anchor carriers.
Innovation Solution
Enhancements to cell status indication and unified access control mechanisms are introduced, including new indicators and parameters for new UEs, allowing differentiated access restrictions based on UE type and cell state, ensuring appropriate resource allocation and energy management.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If legacy UEs are allowed to access cells in sleep states or non-anchor carriers, then network coverage is improved, but energy consumption increases and resource allocation becomes inefficient
Solution Approach 1:
The patent segments the UE population into new UEs and legacy UEs, applying different access control rules to each group. New UEs are allowed to access cells in sleep states and non-anchor carriers, while legacy UEs are restricted from such access. This segmentation enables differentiated resource allocation that optimizes energy consumption while maintaining network coverage.
2Productivity
If new UEs are allowed to access cells in sleep states, then resource utilization is improved, but access control complexity increases
Solution Approach 1:
The patent applies local quality by implementing UE-type-specific access control parameters. Different access control mechanisms are applied locally to new UEs versus legacy UEs, with new UEs receiving permission to access sleep state cells while legacy UEs are barred. This localized differentiation improves resource utilization without requiring complete redesign of the access control system.
Solution Approach 2:
The patent introduces new access control parameters specifically for new UEs, such as cellBarred values that differentiate between UE types. By changing the access control parameters rather than the fundamental access mechanism, the system enables new UEs to access sleep state cells while maintaining compatibility with legacy UEs, thus improving resource utilization with minimal increase in system complexity.
3Loss of energy
If differentiated access control for new and legacy UEs is implemented, then energy saving is improved, but information signaling overhead increases
Solution Approach 1:
The patent implements partial differentiation by applying UE-type-specific access control only where necessary (in sleep state cells and non-anchor carriers) while maintaining standard access control in normal cells. This partial application of differentiated control achieves energy savings in critical scenarios without requiring comprehensive changes to all access control procedures, thus limiting the increase in signaling overhead.
Data Source
AI summary
Methods and apparatuses for access restriction in an energy saving network are disclosed. In one embodiment, a UE comprises a processor; and a transceiver coupled to the processor, wherein, the processor is configured to receive, via the transceiver, at least one of access related information of a new cell and an indication of the cell status of the new cell; and perform an access restriction to the new cell based on the at least one of the access related information of the new cell and the indication of the cell status of the new cell.