UAV Base-Station Detection With Adaptive RRC Sleep Timers
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Solution Overview
Problem
Unmanned aerial vehicles (UAVs) in mobile networks face issues with obtaining neighboring base station information during discontinuous sleep states, leading to potential navigation failures and catastrophic consequences due to the inability to receive navigation information.
Innovation Solution
A system and method for identifying UAVs through device type recognition, generating customized Radio Resource Control (RRC) reconfiguration messages with reportCGI objects and discontinuous sleep state timers, allowing UAVs to safely scan for base stations during sleep states.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Use of energy by moving object
If UAVs use traditional discontinuous sleep state configuration like terrestrial devices, then energy consumption is reduced, but navigation reliability deteriorates due to inability to obtain neighboring base station information
Solution Approach 1:
The patent applies local quality by configuring UAVs with different discontinuous sleep state parameters compared to terrestrial devices. The network device identifies UAVs specifically and assigns them customized RRC reconfiguration messages with adapted sleep state timers and reportCGI object configurations, allowing UAVs to maintain navigation capability while in sleep state, thus resolving the contradiction between energy savings and navigation reliability.
2Loss of information
If UAVs scan for base stations during discontinuous sleep state, then neighboring base station information is obtained, but navigation safety deteriorates due to potential crashes from missing navigation information
Solution Approach 1:
The patent implements dynamics by making the discontinuous sleep state configuration adaptive rather than static. The network device dynamically adjusts the sleep state timer and reportCGI object settings based on UAV-specific parameters such as altitude and geographic location. This dynamic configuration ensures that UAVs scan for base stations at appropriate times and frequencies to maintain navigation safety without compromising energy efficiency.
3Reliability
If UAVs are configured with customized RRC reconfiguration messages, then navigation reliability improves, but device complexity increases due to specialized configuration requirements
Solution Approach 1:
The network device acts as an intermediary that automatically generates and manages customized RRC reconfiguration messages for UAVs. Rather than requiring complex configuration at the UAV end, the network device handles the complexity of determining appropriate sleep state timers and reportCGI object settings based on UAV identification and location information. This intermediary approach improves navigation reliability while keeping the UAV device itself relatively simple.
Data Source
AI summary
Aspects of the subject disclosure may include, for example, identifying a communication device communicatively coupled to a serving base station, requesting a device type associated with the communication device from the serving base station, and determining the communication device comprises an unmanned aerial vehicle based on the device type. Further embodiments can include obtaining a geolocation of the communication device based on the communication device comprising the unmanned aerial vehicle, generating a customized radio resource control (RRC) reconfiguration message, which includes a reportCGI object that involves setting a discontinuous sleep state timer, which stops the data transmission and reception of the communication device with the serving base station. During this discontinuous sleep state timer, the communication device disconnects to its serving base station to read and decode the ECGI of base station associated with neighboring cells. Other embodiments are disclosed.