Satellite SSB Measurement Window Configuration for Beam-Hopping RRM
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Solution Overview
Problem
In satellite communication systems using beam-hopping technology, user equipment (UE) faces challenges in accurately performing radio resource management (RRM) measurements on synchronization signal and physical broadcast channel (PBCH) blocks due to the difficulty in locating the SSB signal of adjacent satellites, leading to unreliable RRM measurements.
Innovation Solution
A method where a first space-borne base station sends an enquiry request to an adjacent second space-borne base station for measurement configuration assistance information, receives a response carrying this information, and determines a measurement window configuration, which is then sent to the UE for performing RRM measurements on the SSB signal in the second base station's beam, utilizing location and grid information to optimize the measurement timing.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If beam-hopping technology is adopted in satellite communication systems, then satellite coverage and resource allocation are improved, but the UE cannot accurately locate the SSB signal of adjacent satellites, leading to unreliable RRM measurements
Solution Approach 1:
The first space-borne base station performs preliminary actions by sending enquiry requests to adjacent second space-borne base stations to obtain measurement configuration assistance information before the UE needs to perform RRM measurements. This includes obtaining beam direction information, time difference information, and dwell time information in advance, so that the measurement window can be accurately configured when needed.
Solution Approach 2:
The patent introduces an intermediary mechanism where the first space-borne base station acts as a mediator between the UE and the second space-borne base station. It obtains measurement configuration assistance information from the second base station and uses this information to configure the measurement window for the UE, thereby solving the location accuracy problem in beam-hopping scenarios.
2Productivity
If the UE performs RRM measurements on SSB signals from adjacent satellites in beam-hopping systems, then network optimization is enabled, but the measurement reliability is reduced due to difficulty in locating SSB signals
Solution Approach 1:
The first space-borne base station performs preliminary actions by sending enquiry requests to adjacent second space-borne base stations to obtain measurement configuration assistance information before the UE needs to perform RRM measurements. This includes obtaining beam direction information, time difference information, and dwell time information in advance, so that the measurement window can be accurately configured when needed.
Solution Approach 2:
The patent implements a feedback mechanism where the first space-borne base station receives measurement configuration assistance information from the second space-borne base station, processes this information to determine the measurement window configuration, and then provides this configuration to the UE. This feedback loop ensures that the UE receives accurate measurement timing information tailored to the current beam-hopping scenario.
3Reliability
If measurement window configuration is optimized using assistance information from adjacent base stations, then RRM measurement reliability is improved, but the system complexity increases due to additional enquiry requests and information processing
Solution Approach 1:
The patent introduces an intermediary mechanism where the first space-borne base station acts as a mediator between the UE and the second space-borne base station. It obtains measurement configuration assistance information from the second base station and uses this information to configure the measurement window for the UE, thereby solving the location accuracy problem in beam-hopping scenarios.
Solution Approach 2:
The patent changes key parameters including time difference information, dwell time information, and beam direction information to configure the measurement window. By adjusting these parameters based on the assistance information obtained from adjacent base stations, the system achieves reliable measurements while managing complexity through parameter-based configuration rather than complex procedural changes.
Data Source
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AI summary
A measurement configuration method includes: sending, by a first space-borne base station, a query request message to a second space-borne base station adjacent to the first space-borne base station; receiving a query response message sent by the second space-borne base station in response to the query request message; determining a measurement window configuration according to measurement configuration assistance information in the query response message; and sending the measurement window configuration to a terminal device, in which the measurement window configuration is used for an RRM measurement of an SSB signal of the second space-borne base station.