Looking for breakthrough ideas for innovation challenges? Try Patsnap Eureka!

Trunking communication method and device of low-orbit constellation satellite communication system

A technology of satellite communication system and trunking communication, applied in the field of trunking communication method and device of low-orbit constellation satellite communication system, capable of solving high dynamic changes of communication links, inapplicability of low-orbit constellation satellite communication system, time offset and frequency offset change high rate issues

Pending Publication Date: 2022-03-04
NANJING PANDA HANDA TECH
View PDF0 Cites 5 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0023] However, the existing cluster technologies are based on ground mobile communication and high-orbit satellite communication systems, and are not suitable for low-orbit constellation satellite communication systems
The speed of low-orbit constellation satellites is fast, the change rate of time offset and frequency offset is large, and the communication link is highly dynamic. The synchronization problem between satellite terminals and high-speed satellites needs to be solved urgently

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Trunking communication method and device of low-orbit constellation satellite communication system
  • Trunking communication method and device of low-orbit constellation satellite communication system
  • Trunking communication method and device of low-orbit constellation satellite communication system

Examples

Experimental program
Comparison scheme
Effect test

Embodiment

[0086] The low-orbit trunking communication system of this embodiment is composed of low-orbit constellation satellites, base stations, satellite terminals, and shared channels. Satellite terminals participate in trunking communication services through shared channels, and shared channels support multiple protocol operations. The system broadcasts messages to cluster users to provide cluster users with the ability to apply, synchronize, monologue voice transmission, and listen to voices. It can also allocate dedicated shared channels for cluster users through resource allocation.

[0087] 1. LEO cluster communication frame structure

[0088] Due to the low altitude and high speed of low-orbit satellites, the traditional satellite communication frame structure cannot meet the requirements of fast synchronization of low-orbit satellite communications. For the low-orbit constellation satellite communication system cluster communication business, it is necessary to add channel-ass...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

No PUM Login to View More

Abstract

The invention discloses a trunking communication method of a low-orbit constellation satellite communication system, which comprises the following steps of: setting a low-orbit trunking communication frame structure: aiming at a trunking communication service of the low-orbit constellation satellite communication system, adding channel associated signaling on a service channel or an uplink shared channel, controlling a communication link, and setting a low-orbit trunking communication frame structure; synchronization between the satellite terminal and the satellite is realized; a low-orbit trunking communication switching process: satellite terminals are switched in the base stations under the same gateway station or among the base stations under the same gateway station; in the switching process, the cluster controller selects the matched frequency resources from the overall situation for allocation, and resource allocation and switching negotiation between the cluster controller and the base station are achieved. According to the invention, the frame structure meeting the rapid synchronization requirement is added on the service channel, the link is controlled, and rapid synchronization is realized; and a communication flow between the cluster controller and the base station is also designed, so that the functions of resource allocation, switching negotiation and the like between the cluster controller and the base station during the cluster service are realized.

Description

technical field [0001] The invention relates to the technical field of low-orbit constellation satellite communication, in particular to a cluster communication method and device for a low-orbit constellation satellite communication system. Background technique [0002] 1. Low-orbit satellite communication system [0003] The low-orbit constellation satellite communication system is a satellite communication system that transmits signals through the low-orbit constellation. It has the characteristics of wide bandwidth, global coverage, and low delay. At present, the low-orbit constellation satellite communication systems that have been completed or put into operation in the world mainly include Iridium, GlobalStar, starlink, O3B, OneWeb, Telesat, etc. Although my country also has low-orbit systems such as Hongyun and Hongyan, they are still in the initial stage of construction. Generally speaking, the low-orbit constellation satellite communication system consists of three ...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Applications(China)
IPC IPC(8): H04B7/185H04W4/06H04W56/00
CPCH04B7/18519H04B7/18541H04W4/06H04W56/001
Inventor 鲍峰丁亚南陆天爱庞文镇刘剑锋
Owner NANJING PANDA HANDA TECH
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Patsnap Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Patsnap Eureka Blog
Learn More
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic, Popular Technical Reports.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com