Wireless Terminal Resource Reuse for Low-Delay 5G Services
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Solution Overview
Problem
In 5G communication systems, there is a challenge in efficiently utilizing resources to meet the low-delay requirements of higher priority services while ensuring that lower priority services can also effectively use their scheduled resources, especially when higher priority services occupy these resources.
Innovation Solution
A method where a terminal determines if resources scheduled for a category-2 service have been occupied by a category-1 service and receives data from these occupied resources based on the scheduling information of the category-1 service, allowing for the reuse of resources to satisfy the low-delay requirements of category-1 services and optimize the use of category-2 service resources.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Loss of time
If resources scheduled for category-2 service are occupied by category-1 service to meet low-delay requirements, then the delay requirement of category-1 service is satisfied, but the resource utilization efficiency of category-2 service deteriorates
Solution Approach 1:
The patent segments the time-domain resources by dividing OFDM symbols into groups, where each group can be independently occupied by different service categories. This allows category-1 service to occupy specific groups of OFDM symbols within a time slot for low-delay transmission, while category-2 service can utilize other groups, thereby resolving the contradiction between meeting delay requirements and maintaining resource utilization efficiency.
Solution Approach 2:
The patent introduces dynamic resource allocation where the base station can flexibly assign different OFDM symbol groups to different service categories based on real-time traffic conditions and priority requirements. This dynamic mechanism enables category-1 service to occupy resources when needed for low-delay communication, while allowing category-2 service to utilize available resources in other groups, thus balancing delay performance and resource efficiency.
2Productivity
If resources are allocated exclusively to category-2 service, then resource utilization for lower priority service is maximized, but the low-delay requirement of category-1 service cannot be met
Solution Approach 1:
By segmenting the time-domain resources into multiple OFDM symbol groups within a time slot, the patent enables differentiated service treatment. Category-1 service can be allocated specific groups for low-delay transmission, while category-2 service receives other groups for standard throughput requirements. This segmentation resolves the contradiction by allowing both service types to utilize resources efficiently according to their respective requirements.
Solution Approach 2:
The patent applies local quality differentiation by assigning different characteristics to different OFDM symbol groups. Some groups are configured with parameters optimized for low-delay category-1 service (such as shorter transmission time), while other groups are configured for category-2 service with different quality characteristics. This local differentiation allows each service category to receive resources with appropriate quality attributes, resolving the contradiction between resource efficiency and delay requirements.
3Productivity
If OFDM symbols are divided into groups with different subcarrier spacing, then both category-1 and category-2 services can utilize the same time resources, but the system complexity increases
Solution Approach 1:
The patent segments OFDM symbols into groups and assigns different subcarrier spacing configurations to different groups based on service category requirements. Category-1 service groups use one subcarrier spacing configuration optimized for low-delay performance, while category-2 service groups use another configuration optimized for throughput. This segmentation approach enables efficient resource utilization for both services while managing system complexity through structured organization.
Solution Approach 2:
The patent changes the subcarrier spacing parameter differently for different OFDM symbol groups to optimize performance for each service category. By adjusting this key parameter per group rather than using a uniform configuration across all resources, the system achieves optimized resource utilization for both category-1 and category-2 services while containing complexity through parameterization rather than structural complexity.
Data Source
AI summary
The present disclosure relates to a pre-5th-Generation (5G) or 5G communication system to be provided for supporting higher data rates Beyond 4th-Generation (4G) communication system such as Long Term Evolution (LTE). The present application provides a data receiving method. The method includes: when a category-1 service occupies resources scheduled for a category-2 service, a terminal receives data of the category-2 service according to information about scheduling of category-1 service data. According to the present application, resources of category-2 services can be reused for receiving category-1 service data to satisfy requirements for low delay of the category-1 services and increase the utility efficiency of resources of the category-2 services.