UE Location Validation for Preconfigured Uplink Resources in LEO Networks
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Solution Overview
Problem
Existing wireless communication technologies face challenges in efficiently managing uplink resources in Non-Terrestrial Networks (NTN), particularly due to fast satellite movement leading to changing coverage conditions and high link loss.
Innovation Solution
The method involves a user equipment (UE) receiving location-related information based on satellite location, determining timing advance, and deciding to perform a preconfigured uplink resource transmission. The network configures and transmits preconfigured uplink resource configurations to the UE, allowing for efficient resource management even in dynamic satellite environments.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Loss of time
If traditional uplink resource management is used in NTN, then the network can maintain basic communication functionality, but communication delay increases and energy consumption rises due to frequent satellite movement and changing coverage conditions
Solution Approach 1:
The patent applies preliminary action by pre-configuring uplink resources with the network before actual communication occurs. The network calculates and provides timing advance values and resource configurations in advance, allowing the UE to perform random access procedure once and then use pre-configured resources for subsequent transmissions without repeated random access, thereby reducing communication delay and improving efficiency
Solution Approach 2:
The patent implements dynamics by making the pre-configured uplink resources adaptable to changing satellite conditions. The network dynamically adjusts timing advance values and resource configurations based on real-time satellite position, velocity, and coverage conditions, allowing the system to maintain efficiency despite fast satellite movement and varying link conditions
2Loss of energy
If traditional random access procedure is used for each uplink transmission, then the network can ensure reliable connection establishment, but signaling overhead increases and energy consumption increases
Solution Approach 1:
The patent applies preliminary action by performing the random access procedure only once initially to establish connection and obtain pre-configured resources. Subsequent uplink transmissions use these pre-configured resources directly without repeating the random access procedure, significantly reducing signaling overhead and energy consumption while maintaining reliable connection through network-controlled resource allocation
Solution Approach 2:
The patent ensures continuity of useful action by maintaining established uplink connections through pre-configured resources across multiple transmissions. Once the initial random access establishes a connection with allocated resources, the system continues using these resources for subsequent transmissions without interruption or re-establishment, reducing the frequency of energy-intensive random access procedures
3Measurement precision
If the UE uses GNSS to determine location for PUR validation, then location accuracy is improved, but energy consumption increases due to frequent GNSS usage
Solution Approach 1:
The patent applies preliminary action by having the network calculate and provide timing advance values and location-related information in advance based on satellite ephemeris and predicted UE position. This eliminates the need for the UE to perform frequent GNSS location determinations, as the network has already performed the calculations beforehand, significantly reducing energy consumption while maintaining location accuracy for PUR validation
Solution Approach 2:
The patent uses the network as an intermediary that performs location-related calculations and timing advance determinations on behalf of the UE. Instead of the UE directly using GNSS for each validation, the network acts as an intermediary that provides pre-calculated values based on satellite information, reducing the energy burden on the UE while maintaining measurement precision
Data Source
AI summary
A method including receiving, at a user equipment, one or more location related information, where the location related information comprises information based upon location related to one or more satellite; determining, by the user equipment, timing advance, where the determining is at least partially based upon the location related information; determining, by the user equipment, to perform a preconfigured uplink resource transmission; and performing, based at least partially upon the determined timing advance, the preconfigured uplink resource transmission.