SSB and Periodic Transmission Collision Handling in Shared Spectrum
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Solution Overview
Problem
In 5G mobile communication systems, there is a need for an effective method to handle collisions between synchronization signal/physical broadcast channel block (SSB) transmission and periodic transmission in shared spectra, ensuring high reliability and communication performance.
Innovation Solution
The proposed method involves a terminal device or network device obtaining a candidate SSB position within a discovery burst transmission window and determining the availability of resources for periodic transmission, with overlapping resources being either used or avoided to prioritize SSB transmissions, thereby ensuring high-priority SSB transmission and maintaining communication reliability.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If SSB transmission is prioritized over periodic transmission when resources overlap, then SSB transmission reliability is improved, but periodic transmission may be blocked or delayed
Solution Approach 1:
The patent changes the parameter of resource allocation priority by introducing a new parameter 'ssb-PositionQCL-DL' that indicates the QCL relationship between SSB and periodic transmission resources. When overlap is detected, the system dynamically adjusts whether to prioritize SSB or periodic transmission based on this parameter configuration, allowing flexible parameter-based resolution of the contradiction.
Solution Approach 2:
The patent implements dynamic resource handling by allowing the terminal to determine in real-time whether to prioritize SSB or periodic transmission based on the detected overlap and configured parameters. This dynamic decision-making process enables the system to adapt to different scenarios, resolving the contradiction by making the priority relationship flexible rather than fixed.
2Productivity
If terminal determines resource availability for periodic transmission when overlapping with SSB position, then resource utilization is improved, but transmission collision handling complexity increases
Solution Approach 1:
The patent applies preliminary action by having the network pre-configure the 'ssb-PositionQCL-DL' parameter before transmission occurs. This pre-configuration provides the terminal with clear rules for handling overlaps, reducing the complexity of real-time decision-making while still enabling efficient resource utilization through proactive parameter setup.
3Productivity
If SSB and periodic transmission use the same shared spectrum resources, then spectrum efficiency is improved, but transmission collision occurs
Solution Approach 1:
The patent changes the resource allocation parameters by introducing QCL relationship indicators that allow the system to distinguish between different types of overlapping resources. When the 'ssb-PositionQCL-DL' parameter indicates a QCL relationship, the system can safely multiplex transmissions; when it indicates no QCL relationship, the system avoids collisions by prioritizing SSB. This parameter-based approach enables spectrum efficiency while maintaining reliability.
Data Source
AI summary
An apparatus and a method of processing collision between synchronization signal/physical broadcast channel block (SSB) transmission and periodic transmission, applied in a shared spectrum are provided. The method includes obtaining, by a terminal device, a first candidate SSB position within a discovery burst transmission (DRS) window and obtaining, by the terminal device, a first resource for the periodic channel or signal transmission, wherein when the first resource is overlapped with the first candidate SSB position, determining, by the terminal device, whether the first resource is available for the periodic channel or signal transmission. This can solve issues in the prior art, provide a technical solution of handling a possible collision between an SSB and the periodic channel or signal, provide a simple implementation, provide a good communication performance, and/or provide high reliability.