UAV Flight Route Provision Through Access Network RRC Resumption
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Solution Overview
Problem
Current UAV systems face challenges in acquiring a flight route from a UAV management system, particularly in the fixed mode, where the UAV needs to retrieve flight path information efficiently.
Innovation Solution
The method involves the UAV sending a radio resource control (RRC) connection resumption request to access network equipment, which then provides the flight path information, either directly or through other access network equipment, during the RRC connection resumption process, ensuring the UAV acquires the necessary flight path information.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Loss of information
If the UAV sends an RRC connection resumption request to access network equipment, then the UAV can acquire flight path information in an inactive state, but the signaling overhead increases
Solution Approach 1:
The access network equipment stores the flight path information in advance before the UAV needs it. When the UAV sends an RRC connection resumption request, the information is already available at the access network equipment, eliminating the need for the UAV to establish a full RRC connection with the core network to retrieve the information, thus reducing signaling overhead.
Solution Approach 2:
The access network equipment acts as an intermediary that caches and provides flight path information to the UAV directly without requiring communication with the core network. This intermediary role allows the UAV to acquire necessary information through minimal signaling while the access network equipment handles the information retrieval and storage.
2Loss of information
If the UAV establishes a full RRC connection with the core network to acquire flight path information, then the information can be retrieved, but the connection establishment time increases
Solution Approach 1:
The access network equipment pre-stores flight path information received from the core network or UAV management system. When the UAV needs this information, it is already cached at the access network equipment, allowing immediate retrieval without initiating a full RRC connection establishment process with the core network, thus reducing time delay.
Solution Approach 2:
The information retrieval function is segmented from the core network communication. The access network equipment independently handles flight path information storage and provision, separating this function from the main RRC connection management. This segmentation allows the UAV to acquire information through a simplified process that doesn't require full core network involvement.
3Productivity
If the access network equipment stores flight path information locally, then the UAV can quickly access it, but the device complexity increases
Solution Approach 1:
The access network equipment utilizes its existing storage and processing capabilities, which are already part of its standard functionality for handling UAV communications. By storing flight path information in its existing memory structures and retrieving it through standard signaling procedures, the system achieves fast access without adding specialized hardware or complex software modules.
Data Source
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AI summary
A method for providing a flight route to an unmanned aerial vehicle, an acquisition method and device, and a system. The method includes: an unmanned aerial vehicle transmitting an RRC connection resumption request to first access network equipment (201); and the first access network equipment transmitting, to the unmanned aerial vehicle, flight route information to be used by the unmanned aerial vehicle (202). In the invention, an unmanned aerial vehicle in an inactive state transmits an RRC connection resumption request to access network equipment, and then the access network equipment transmits, to the unmanned aerial vehicle, flight route information to be used by the unmanned aerial vehicle in an RRC connection resumption process or after resumption of an RRC connection, thereby realizing provision of flight route information to an unmanned aerial vehicle, and enabling the unmanned aerial vehicle to acquire the flight route information.