Network Device Timing Advance Reporting for Satellite Location Verification
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Solution Overview
Problem
In satellite communication networks, inaccurate location information reported by terminals can lead to conflicts in time-frequency resources, affecting the normal communication of other terminals.
Innovation Solution
A method and device where a network device triggers a terminal to perform timing advance (TA) reporting when the reported location information meets a preset condition, allowing the network device to verify the accuracy of the location information.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If the terminal uses GNSS to determine and report location information, then the network device can perform resource scheduling based on location information, but the location information may be inaccurate causing time-frequency resource conflicts
Solution Approach 1:
The patent implements a feedback mechanism where the network device monitors uplink transmission performance and triggers TA reporting when location accuracy is suspected. The terminal feeds back TA information to the network device, which then verifies location accuracy and adjusts resource scheduling accordingly. This closed-loop feedback system resolves the contradiction by dynamically validating location information while maintaining scheduling efficiency.
Solution Approach 2:
The patent applies preliminary action by having the terminal pre-calculate TA values based on uplink transmission timing before actual resource allocation. The network device also performs preliminary monitoring of transmission performance to detect potential location inaccuracies before they cause resource conflicts. This proactive approach prevents resource scheduling conflicts before they occur.
2Ease of operation
If the network device allocates time-frequency resources based on reported location information, then resource scheduling can be performed, but resource conflicts may occur when location information is inaccurate
Solution Approach 1:
The patent establishes a feedback loop where the network device monitors uplink transmission success and triggers TA reporting when conflicts are detected. The terminal responds by reporting TA information, enabling the network device to verify location accuracy and resolve scheduling conflicts. This feedback mechanism maintains ease of operation while eliminating harmful resource conflicts.
Solution Approach 2:
The patent introduces TA reporting as an intermediary verification mechanism between location information reporting and resource scheduling. Instead of directly scheduling based on potentially inaccurate location data, the system uses TA reporting as a mediating step to validate location accuracy, thereby preventing resource conflicts while maintaining scheduling efficiency.
3Reliability
If the terminal reports location information frequently to ensure accuracy, then location reliability improves, but signaling overhead and system complexity increase
Solution Approach 1:
The patent applies preliminary action by having the terminal pre-calculate and prepare TA values before they are needed for verification. The network device also performs preliminary monitoring of transmission performance to determine when verification is necessary. This reduces the need for frequent TA reporting while maintaining location reliability, thereby reducing system complexity.
Solution Approach 2:
The patent enables self-service by having the terminal autonomously monitor its own uplink transmission timing and calculate TA values without continuous network intervention. The terminal only reports TA information when triggered by the network device or when self-determined to be necessary, reducing signaling overhead and system complexity while maintaining reliability.
Data Source
AI summary
Disclosed in the embodiments of the present disclosure are methods and devices for determining location information. One of the methods performed by a network device includes triggering, in response to determining that location information reported by a first terminal meets a preset condition, the first terminal to perform Timing Advance (TA) reporting.