Satellite Beam Reselection Using Adjacent Reference Signal Measurement
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Solution Overview
Problem
Existing communication systems lack effective methods for reselection or handover between satellite beam footprints, particularly when PCIs are identical or frequency domain resources are the same, leading to delays in transitioning to the connected state.
Innovation Solution
A method and apparatus for measuring the reference signal of adjacent satellite beam footprints based on obtained measurement information, enabling reselection of different frequency and beam resources, even when PCIs are unchanged, to maintain optimal connectivity.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Object-affected harmful factors
If different frequency domain resources are used by different beam footprints to avoid co-channel interference, then interference is avoided, but resource utilization efficiency deteriorates
Solution Approach 1:
The patent changes the frequency domain resource parameters dynamically based on beam footprint identification. When the terminal detects that the adjacent beam footprint uses different frequency resources, it switches to those resources for measurement. This allows frequency resources to be reused across different beam footprints without causing interference, thereby improving resource utilization efficiency while maintaining interference avoidance.
2Device complexity
If reference signal measurement is performed without measurement information of adjacent beam footprints, then measurement process is simple, but reselection accuracy deteriorates
Solution Approach 1:
The patent applies preliminary action by obtaining measurement information of adjacent beam footprints before performing reference signal measurement. The network configures and provides the terminal with measurement information including frequency domain resource allocations of adjacent beam footprints in advance. This allows the terminal to accurately identify which frequency resources to measure, improving reselection accuracy without significantly increasing measurement complexity.
3Ease of operation
If terminal waits for network instruction to measure adjacent beam footprints, then measurement timing is coordinated, but handover delay increases
Solution Approach 1:
The patent uses preliminary action by having the terminal proactively measure reference signals of adjacent beam footprints using obtained measurement information before network handover instructions are triggered. The terminal performs measurements in advance, maintains measurement results, and can quickly report them when needed, thereby reducing handover delay while maintaining coordinated measurement timing.
Solution Approach 2:
The patent applies dynamics by making the measurement process adaptive and flexible. The terminal dynamically decides when to perform measurements based on received measurement information and current signal conditions, rather than strictly waiting for network instructions. This dynamic approach allows the terminal to balance measurement coordination with reducing handover delays.
Data Source
AI summary
A method for communication processing is performed by a terminal, and includes: obtaining measurement information of an adjacent satellite beam footprint of a satellite beam footprint to which the terminal currently belongs; and measuring a reference signal of the adjacent satellite beam footprint based on the measurement information.