Beam Reception Control for Satellite Beam-Hopping Power Saving
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Solution Overview
Problem
In non-terrestrial networks, terminals unnecessarily consume power by periodically detecting measurement beams from satellites that may have turned off, as the terminals are unaware of the beam status due to dynamic beam hopping communication.
Innovation Solution
A method and apparatus for terminals to detect signal strength conditions, such as decreasing strength, strength below a threshold, or rapid strength change, to determine if a beam has been turned off, allowing the terminal to stop receiving the beam and conserve power.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the terminal periodically detects the measurement beam in beam hopping communication mode, then the terminal can maintain communication with the satellite, but the terminal consumes power unnecessarily when the beam is turned off
Solution Approach 1:
The terminal performs preliminary detection of beam signal strength before entering periodic detection mode. By detecting signal strength changes that indicate beam turn-off conditions in advance, the terminal can stop periodic detection before it would consume unnecessary power, while still maintaining communication reliability through conditional stopping based on detected signal characteristics
Solution Approach 2:
The terminal uses feedback from beam signal strength detection to dynamically adjust its detection behavior. When the signal strength indicates the beam is turned off (below threshold or excessive change rate), the terminal stops periodic detection to save power. When signal strength is adequate, the terminal resumes periodic detection to maintain communication reliability
2Use of energy by moving object
If the terminal stops detecting the beam signal, then the terminal saves power, but the terminal may miss important beam information
Solution Approach 1:
The terminal continuously monitors beam signal strength and uses this feedback to determine when to stop or resume detection. This feedback mechanism ensures the terminal stops detection only when confident the beam is turned off (avoiding information loss) while saving power during stopped periods. The terminal can resume detection when signal conditions change, ensuring important beam information is not missed
Solution Approach 2:
The terminal performs preliminary signal strength detection to establish baseline conditions before stopping periodic detection. This preliminary action provides confidence that the beam is truly turned off, preventing premature stopping that would cause information loss, while still enabling power savings when conditions confirm beam turn-off
3Reliability
If the terminal continuously receives the beam signal, then the terminal ensures continuous communication coverage, but the terminal cannot adapt to dynamic beam hopping patterns
Solution Approach 1:
The terminal dynamically adjusts its detection behavior based on real-time beam signal conditions rather than using a fixed continuous detection mode. The terminal can transition between continuous reception and stopped detection states based on signal strength criteria, enabling adaptation to dynamic beam hopping patterns while maintaining coverage when beams are active
Solution Approach 2:
The terminal uses feedback from signal strength measurement to adapt its reception behavior to dynamic beam hopping patterns. When feedback indicates active beams, the terminal maintains reception for coverage. When feedback indicates turned-off beams, the terminal stops reception to adapt to the current beam pattern, achieving both coverage and adaptability
Data Source
AI summary
A beam receiving method that can include receiving a beam signal in a target area from a network device in a non-terrestrial network, detecting a signal strength of the beam signal, and stopping receiving the beam signal in the target area, in response to determining that the signal strength of the beam signal satisfies a first condition. The first condition can include at least one of: the signal strength decreasing within a first period of time, the signal strength being less than a first strength, or a change rate of the signal strength within the first period of time being greater than a first change rate.