Blockchain Mobility Management for Accurate Satellite Network Paging
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Solution Overview
Problem
In satellite-terrestrial integrated networks, the mobility management challenges arise due to non-geostationary satellites causing rapid cell reselection and network unawareness of user equipment (UE) location, leading to inefficient paging and potential disconnects.
Innovation Solution
Utilizing a blockchain-based system to record and manage registration information, including geolocation and operation plans of satellites, to determine efficient paging routes and improve network awareness of UE location, ensuring accurate and efficient mobility management.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the network pages the UE over a large area to ensure coverage, then the paging reliability is improved, but the satellite channel resources are wasted and the paging efficiency deteriorates
Solution Approach 1:
The patent stores UE registration information and satellite operation plans on the blockchain in advance, enabling the network to determine accurate paging routes before actual paging operations. This preliminary preparation allows the system to page UEs efficiently without needing to broadcast over large areas, thus improving paging reliability while reducing satellite channel resource consumption.
Solution Approach 2:
The blockchain-based system provides feedback mechanisms where UE registration information is continuously updated and stored on the blockchain. This feedback loop enables the network to maintain accurate knowledge of UE locations and satellite positions, allowing for targeted paging rather than broad-area broadcasting, thereby improving reliability while reducing resource waste.
2Device complexity
If the network uses traditional mobility management without blockchain, then the device complexity is reduced, but the network awareness of UE location deteriorates and paging efficiency decreases
Solution Approach 1:
The patent introduces blockchain as an intermediary layer that stores and manages UE registration information and satellite operation plans. This intermediary provides a decentralized, secure, and transparent mechanism for maintaining UE location awareness without requiring complex centralized tracking systems. The blockchain acts as a trusted mediator that improves network awareness while adding manageable complexity through standardized cryptographic operations.
3Measurement precision
If the system stores detailed registration information on blockchain, then the network awareness and paging accuracy are improved, but the blockchain storage requirements and system complexity increase
Solution Approach 1:
The patent extracts only the essential registration information needed for paging purposes and stores it on the blockchain, rather than maintaining complete UE context data. This selective extraction of critical information (such as UE identifiers, location areas, and satellite orbit parameters) achieves sufficient paging accuracy while minimizing blockchain storage requirements and system complexity.
Data Source
AI summary
A wireless communication method for use in a blockchain node is disclosed. The method comprises receiving, from an access and mobility management function, a query request associated with paging information of a wireless terminal, determining the paging information based on registration information of the wireless terminal, wherein the registration information is stored on a blockchain, and transmitting, to the access and mobility management function, the paging information.