Satellite Network Selection Using Historical Camping Data
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Satellite communication terminals face prolonged network selection durations due to narrow bandwidths, necessitating the reception of system messages, which increases the time required to camp on a satellite network.
Innovation Solution
Terminals obtain satellite network selection information, including historical camping information and beam coverage data, to determine center frequencies and camp on the network without receiving system messages, thereby reducing network camping duration.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the terminal receives system messages through satellite narrowband transmission to successfully camp on the satellite network, then the terminal can access the satellite network, but the network selection duration increases due to narrow bandwidth
Solution Approach 1:
The server performs preliminary actions by pre-obtaining and pre-processing system messages and beam coverage information before the terminal needs to access the satellite network. The terminal retrieves this pre-prepared information from the server, eliminating the need to receive system messages in real-time through narrowband satellite transmission, thus reducing network selection duration while maintaining access reliability
Solution Approach 2:
The server acts as an intermediary between the terminal and the satellite network. Instead of the terminal directly receiving system messages from the satellite through narrowband transmission, the server provides the terminal with necessary system message information and beam coverage data, serving as an information intermediary that reduces the time required for network selection
2Speed
If the terminal uses historical camping information to select networks, then network selection speed improves, but the terminal needs to obtain and process additional information from the server
Solution Approach 1:
The server creates copies of historical camping information and beam coverage information, storing them in advance. When the terminal needs to select a network, it retrieves these pre-copied information from the server rather than gathering new information, significantly speeding up the network selection process. The copying approach transforms complex real-time information gathering into simple data retrieval
Data Source
Figure 1
Figure 2
Figure 3
AI summary
This application discloses a network selection method in a satellite communication system, a system, and a related apparatus. A terminal may obtain satellite network selection information from a cloud server, where the satellite network selection information includes historical camping information and beam coverage information. The historical camping information includes a center frequency and a location at which the terminal successfully camps on a satellite network, and a system message of the satellite network. The beam coverage information includes a beam center location and a center frequency of each beam. The terminal camps on the center frequency of the satellite network based on the satellite network selection information. In this way, the terminal may obtain, based on a location of the terminal and location information provided by the satellite network selection information, a center frequency on which the terminal can camp at the location of the terminal. In addition, when the terminal finds, in the historical camping information, the center frequency on which the terminal can camp, the terminal may further perform a network camping operation based on the system message in the historical camping information, and the terminal does not need to receive a system message from a satellite, so that time for the terminal to obtain the system message is saved, the terminal can access the satellite network more quickly, and communication efficiency is improved.