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US-12621800-B2 - Method for mobility management in satellite-terrestrial integrated network based on blockchain

US12621800B2US 12621800 B2US12621800 B2US 12621800B2US-12621800-B2

Abstract

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.

Inventors

  • Zhicheng Qu
  • Zheng Huang

Assignees

  • ZTE CORPORATION

Dates

Publication Date
20260505
Application Date
20231128

Claims (7)

  1. 1 . A wireless communication method for use in a blockchain node, the method comprising: 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, wherein the paging information is determined via a smart contract of the blockchain, wherein the paging information comprises a paging route, the paging route being a path through one or more wireless network nodes from the access and mobility management function to the wireless terminal, and wherein the paging route is determined based on the registration information and an operation plan of a wireless network node serving the wireless terminal, wherein the operation plan is stored on the blockchain, and the operation plan comprises at least one of ephemerides, a frequency plan, an inter satellite link status or beam plan.
  2. 2 . The wireless communication method of claim 1 , wherein the registration information comprises at least one of a wireless terminal identifier, geolocation information, a registration time or a predefined trajectory.
  3. 3 . A wireless communication method for use in an access and mobility management function, the method comprising: transmitting, to a blockchain node associated with a blockchain, a query request associated with paging information of a wireless terminal via a smart contract of the blockchain, receiving, from the blockchain node, the paging information, and paging the wireless terminal based on the paging information, wherein the paging information comprises a paging route, the paging route being a path through one or more wireless network nodes from the access and mobility management function to the wireless terminal, and wherein the paging route is determined based on registration information of the wireless terminal and an operation plan of a wireless network node serving the wireless terminal, wherein the registration information and the operation plan are stored on the blockchain, wherein the operation plan comprises at least one of ephemerides, a frequency plan, an inter satellite link status or beam plan.
  4. 4 . The wireless communication method of claim 3 , wherein the paging information is determined based on registration information of the wireless terminal stored on the blockchain.
  5. 5 . The wireless communication method of claim 3 , wherein the registration information comprises at least one of a wireless terminal identifier, geolocation information, a registration time or a predefined trajectory.
  6. 6 . A wireless device comprising an access and mobility management function, comprising: a communication unit, configured to: transmit, to a blockchain node associated with a blockchain, a query request associated with paging information of a wireless terminal via a smart contract of the blockchain, and receive, from the blockchain node, the paging information, and a processor configured to page the wireless terminal based on the paging information, wherein the paging information comprises a paging route, the paging route being a path through one or more wireless network nodes from the access and mobility management function to the wireless terminal, and wherein the paging route is determined based on registration information of the wireless terminal and an operation plan of a wireless network node serving the wireless terminal, wherein the registration information and the operation plan are stored on the blockchain, wherein the operation plan comprises at least one of ephemerides, a frequency plan, an inter satellite link status or beam plan.
  7. 7 . The wireless device of claim 6 , wherein the registration information comprises at least one of a wireless terminal identifier, geolocation information, a registration time or a predefined trajectory.

Description

CROSS-REFERENCE TO RELATED APPLICATION This application is a continuation of PCT/CN2021/102827, filed on Jun. 28, 2021, titled “A METHOD FOR MOBILITY MANAGEMENT IN SATELLITE-TERRESTRIAL INTEGRATED NETWORK BASED ON BLOCKCHAIN”, published as WO 2023/272449 A1, the entirety of which is incorporated herein by reference. TECHNICAL FIELD This document is directed generally to wireless communications. BACKGROUND When base stations (e.g. gNBs) are on-board non geostationary satellites, the attached cells and tracking areas move with the corresponding gNBs. Contrary to terrestrial access networks, the non-terrestrial network may have a potential disconnect between geographical coverage, cell definition and tracking area and RA definitions. Under such conditions, how to re-select the cell from a serving cell disappearing below the horizon and another cell emerging in quick succession becomes a new mobility challenge even for a stationary UE. In addition, because the network is not fully aware of the UE location, the network may need to page the UE within a considerable large area. SUMMARY This document relates to methods, systems, and devices for mobility management based on blockchain, and particularly to methods, systems, and devices for mobility management in a satellite-terrestrial integrated network based on the blockchain. The present disclosure relates to a wireless communication method for use in a blockchain node. 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, andtransmitting, to the access and mobility management function, the paging information. Various embodiments may preferably implement the following features: Preferably, the paging information is determined via a smart contract of the blockchain.Preferably, the paging information comprises a paging route from the access and mobility management function to the wireless terminal.Preferably, the paging route is determined based on the registration information and an operation plan of a wireless network node serving the wireless terminal, wherein the operation plan is stored on the blockchain.Preferably, the operation plan comprises at least one of ephemerides, a frequency plan, an inter satellite link status or beam plan.Preferably, the registration information comprises at least one of a wireless terminal identifier, geolocation information, a registration time or a predefined trajectory. The present disclosure relates to a wireless communication method for use in an access and mobility management function. The method comprises: transmitting, to a blockchain node associated with a blockchain, a query request associated with paging information of a wireless terminal via a smart contract of the blockchain,receiving, from the blockchain node, the paging information, andpaging the wireless terminal based on the paging information. Various embodiments may preferably implement the following features: Preferably, the paging information comprises a paging route from the access and mobility management function to the wireless terminal.Preferably, the paging route is determined based on registration information of the wireless terminal and an operation plan of a wireless network node serving the wireless terminal, wherein the registration information and the operation plan are stored on the blockchain.Preferably, the operation plan comprises at least one of ephemerides, a frequency plan, an inter satellite link status or beam plan.Preferably, the paging information is determined based on registration information of the wireless terminal stored on the blockchain.Preferably, the registration information comprises at least one of a wireless terminal identifier, geolocation information, a registration time or a predefined trajectory. The present disclosure relates to a wireless communication method for use in a wireless network node. The method comprises: receiving, from a wireless terminal, registration information of the wireless terminal, andrecording the registration information of the wireless terminal on a blockchain. Various embodiments may preferably implement the following features: Preferably, the registration information comprises at least one of a wireless terminal identifier, geolocation information, a registration time or a predefined trajectory.Preferably, the registration information is received in a registration request or a registration update request.Preferably, the registration information is recorded on the blockchain via a smart contract of the blockchain. Preferably, recording the registration information of the wireless terminal on the blockchain comprises: recording the registration information and network node information of the wireless network node on the blockchain. Preferably