TDD Guard Period Configuration by RBs and Subbands
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing guard period designs in TDD systems result in resource waste and inefficiency due to fixed, inflexible configurations that do not account for varying UE conditions, leading to unnecessary overhead.
Innovation Solution
The method involves determining guard periods based on smaller frequency domain units such as resource blocks, RB groups, or subbands, allowing for flexible configuration of guard periods, including time and frequency domain resources, and enabling dynamic adjustment based on UE-specific requirements.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If guard period is configured based on entire bandwidth part (BWP), then guard period coverage is ensured, but resource waste occurs due to unnecessary guard period overhead in all frequency resources
Solution Approach 1:
The patent segments the frequency domain into smaller units (resource blocks, RB groups, or subbands) rather than treating the entire BWP as a single unit. This allows guard periods to be configured selectively in specific frequency segments where needed, rather than applying guard periods across the entire bandwidth part, thus reducing resource waste while maintaining necessary coverage.
Solution Approach 2:
The patent enables different guard period configurations for different frequency domain segments. By allowing UE-specific guard period settings in specific resource blocks or subbands, the system applies local quality optimization where guard periods are only configured in segments that require them, rather than uniformly across the entire BWP.
2Device complexity
If fixed guard period configuration is used, then system complexity is reduced, but adaptability to varying UE conditions deteriorates
Solution Approach 1:
The patent introduces dynamic guard period configuration where the network can selectively apply guard periods to specific frequency domain segments based on UE conditions, traffic requirements, and interference scenarios. This dynamic approach allows the system to adapt to varying UE conditions while maintaining manageable complexity through standardized configuration mechanisms.
Solution Approach 2:
The patent enables parameter changes in guard period configuration by allowing different time domain lengths and frequency domain allocations for different UEs or traffic types. The network can adjust guard period parameters (such as time domain length, frequency domain position, and resource block allocation) based on specific UE conditions without fundamentally changing the system architecture.
3Reliability
If guard period spans entire carrier or BWP, then switching time is reserved for all resources, but resource utilization deteriorates due to inability to use guard period resources for data transmission
Solution Approach 1:
The patent segments the frequency domain so that guard periods can be applied to specific resource blocks or subbands rather than the entire carrier or BWP. This segmentation allows data transmission to occur in frequency segments that do not require guard periods, thereby improving resource utilization while still ensuring switching time reservation in segments where it is necessary.
Solution Approach 2:
The patent applies guard periods partially rather than excessively across all frequency resources. By configuring guard periods only in specific frequency domain segments where switching time is actually needed, the system avoids the excessive application of guard periods across the entire BWP, allowing other segments to be used for data transmission and thus improving overall resource utilization.
Data Source
Figure 1~2
Figure 3~4
Figure 5~7
AI summary
Embodiments of the present disclosure provide a method and apparatus for determining a guard period. The method applied to a terminal device comprises: determining the guard period on the basis of first information, wherein the first information is used for indicating, on the basis of a first frequency domain unit, a frequency domain resource corresponding to the guard period and/or indicating a time domain resource corresponding to the guard period, and a frequency domain width of the first frequency domain unit is less than a bandwidth part (BWP).