Satellite Communication GNSS Validity Extension for Fewer State Transitions
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Satellite communication terminals experience frequent transitions between connected and idle states due to GNSS validity expiration, leading to high signaling overheads and inability for long-time continuous communication.
Innovation Solution
Determine and report the GNSS second validity duration based on a reference time point within a measurement gap, allowing terminals to maintain communication beyond the initial GNSS validity duration and reduce unnecessary state transitions.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the terminal continuously initiates random access to enter and exit connected state, then the terminal can maintain communication synchronization, but the communication duration is limited and signaling overhead increases
Solution Approach 1:
The terminal device performs GNSS measurement in advance during the measurement gap to obtain validity duration information before the current GNSS validity period expires. This preliminary action allows the terminal to prepare synchronization information proactively, enabling it to extend communication beyond the original GNSS validity duration without continuous random access interruptions.
Solution Approach 2:
By utilizing the GNSS validity duration information obtained during the measurement gap, the terminal maintains continuous communication action without being forced to exit connected state. The network device uses this information to appropriately extend the connected state duration, ensuring continuous useful communication action rather than intermittent connectivity.
2Reliability
If the terminal continuously initiates random access to maintain connected state, then communication synchronization is maintained, but signaling overhead increases
Solution Approach 1:
The terminal obtains GNSS validity duration information in advance during the measurement gap before the current validity period expires. This preliminary acquisition of synchronization information eliminates the need for continuous random access signaling, thereby reducing signaling overhead while maintaining synchronization reliability.
Solution Approach 2:
The network device receives the GNSS validity duration information from the terminal and uses this feedback to make informed decisions about extending the connected state. This feedback mechanism allows the network to optimize resource allocation and reduce unnecessary signaling by accurately knowing when the terminal will need to re-synchronize.
Data Source
AI summary
A satellite communication method and an apparatus are provided, and are applied to the field of communication technologies. The method includes: A first communication apparatus determines global navigation satellite system (GNSS) second validity duration of the first communication apparatus in a GNSS measurement gap, and then reports duration information indicating the GNSS second validity duration. Correspondingly, a second communication apparatus receives the duration information, and determines the GNSS second validity duration based on the duration information. The GNSS second validity duration may be determined based on a reference time point, and the reference time point may be included in the GNSS measurement gap. According to the method, duration of communication between the first communication apparatus and the second communication apparatus can be increased.