Opportunistic Small Cell Triggering for Wireless Network Optimization
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Solution Overview
Problem
Current power and resource management in wireless communication networks leads to inefficient utilization of small cells, resulting in interference and suboptimal communication quality due to static power management and limited detection capabilities of small cells.
Innovation Solution
A method where user equipment (UE) determines changes in location and requests small cell information from a database, attempting to detect and trigger small cells to turn on when not detected, thereby optimizing power and resource management.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If small cells continuously transmit overhead power and resources, then communication coverage is maintained, but energy consumption increases and interference is caused to other cells
Solution Approach 1:
The patent implements dynamic power management for small cells by transitioning between active and dormant states based on real-time detection of user equipment. When UE is detected, the small cell activates to provide communication services; when no UE is present, the small cell enters dormant state to save energy. This dynamic state adjustment resolves the contradiction between maintaining communication coverage and reducing energy consumption.
Solution Approach 2:
The system enables small cells to autonomously determine their operational state through UE detection mechanisms. The small cell monitors its coverage area for presence of user equipment and automatically activates or deactivates without requiring continuous network control signaling, thereby reducing overhead power consumption while ensuring communication availability when needed.
2Loss of energy
If small cells are deployed with lower transmit power, then energy efficiency improves, but coverage area decreases leading to potential service gaps
Solution Approach 1:
The patent divides the macro cell coverage area into multiple smaller zones, each served by a low-power small cell. This segmentation allows each small cell to operate with reduced transmit power while collectively providing comprehensive coverage. The coordinated deployment of multiple small cells ensures that energy efficiency is improved without creating service gaps, as each small cell serves a specific localized area.
Solution Approach 2:
The system performs preliminary detection of user equipment presence before activating small cell transmission. By detecting UE in advance through passive monitoring or discovery signals, the system ensures that small cells are activated only when needed, preventing coverage gaps while maintaining energy efficiency during periods of no activity.
3Loss of energy
If small cells operate in dormant state to save energy, then power consumption reduces, but detection capability and service responsiveness deteriorate
Solution Approach 1:
The patent implements periodic monitoring or discovery signal transmission by small cells in dormant state. Instead of complete shutdown, the small cell periodically transmits low-power discovery signals or monitoring beacons that enable UE detection with minimal energy consumption. This periodic action maintains basic detection capability while significantly reducing power consumption compared to continuous operation.
Solution Approach 2:
The system introduces intermediary discovery signals or monitoring mechanisms that facilitate UE detection without requiring full small cell activation. These intermediary signals act as mediators between the dormant state and full operational state, enabling the network to detect UE presence with minimal power consumption while maintaining the ability to quickly activate service when needed.
Data Source
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AI summary
Methods and apparatus are described for opportunistic small cell triggering. The methods and apparatus include determining, by a user equipment (UE) connected to a cell, a change of location of the UE. Further, the methods and apparatus include requesting small cell information from a database based at least in part on the change of location of the UE. Moreover, the methods and apparatus include attempting to detect a small cell based on the small cell information. Additionally, the methods and apparatus include transmitting a message to turn on the small cell when no the small cell is not detected.