Hierarchical Reserved Resource Configuration for IoT Wireless Systems
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Solution Overview
Problem
Current wireless communication systems face challenges in efficiently managing resources to accommodate increased data traffic, high transfer rates, and low-latency requirements while ensuring energy efficiency, especially in coexisting with different frequency bands like NB-IoT and NR systems.
Innovation Solution
A method of configuring and managing reserved resources hierarchically using downlink control information (DCI) in units of specific resources such as narrowband carriers, allowing for flexible resource allocation and dynamic use, which enables efficient coexistence with other wireless communication systems at the same frequency band.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If resources are allocated statically in traditional wireless communication systems, then resource management is simple, but resource utilization efficiency deteriorates under increased data traffic and diverse IoT services
Solution Approach 1:
The patent implements dynamic resource allocation where reserved resources can be flexibly adjusted based on actual network conditions and service requirements. The base station dynamically determines whether to allocate reserved resources to NB-IoT or NR systems according to traffic demand, achieving adaptive resource management that improves utilization efficiency without requiring complex static configuration for each scenario
Solution Approach 2:
The patent changes the allocation status parameter of reserved resources from fixed to variable. By controlling the allocation indicator parameter through DCI signaling, the system can switch between different resource allocation modes (NB-IoT dedicated, NR dedicated, or shared) based on real-time conditions, resolving the contradiction between simple management and efficient utilization
2Reliability
If reserved resources are allocated to NB-IoT system, then NB-IoT service reliability is improved, but NR system performance deteriorates due to resource waste
Solution Approach 1:
The patent implements dynamic switching of reserved resource allocation between NB-IoT and NR systems. The base station monitors network conditions and service demands, then dynamically adjusts which system receives the reserved resources through DCI signaling. This ensures NB-IoT reliability when needed while preventing NR performance degradation when NR traffic demands the resources
Solution Approach 2:
The reserved resources are designed to serve multiple purposes and multiple systems. The same reserved resources can be allocated to either NB-IoT or NR depending on current needs, making the resource allocation mechanism universal rather than dedicated to a single system, thus eliminating the zero-sum trade-off between the two systems
3Adaptability or versatility
If reserved resources are allocated dynamically based on DCI, then resource flexibility is improved, but signaling overhead increases
Solution Approach 1:
The DCI signaling mechanism is designed to serve multiple functions simultaneously. The same DCI format and signaling structure is used for both traditional scheduling and reserved resource allocation, allowing the signaling system to be universal rather than requiring separate dedicated signaling for reserved resources. This reduces overall signaling overhead while maintaining flexibility
Solution Approach 2:
The patent reuses existing DCI signaling structures and formats for reserved resource allocation instead of creating new dedicated signaling mechanisms. By recovering and repurposing existing signaling resources, the system achieves dynamic resource allocation flexibility without proportionally increasing signaling overhead
4Manufacturing precision
If hierarchical resource configuration is implemented, then resource allocation precision is improved, but system complexity increases
Solution Approach 1:
The patent segments resource configuration into hierarchical levels: cell-level reserved resource configuration, UE-specific allocation indicators, and dynamic DCI signaling. This segmentation allows precise control at each level while keeping individual configuration elements simple, resolving the contradiction between precision and complexity through structured decomposition
Data Source
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AI summary
A method of transmitting and receiving downlink information in a wireless communication system supporting Internet of Things (IoT) and a device therefor are disclosed. The method performed by a user equipment (UE) comprises receiving, from a base station, resource reservation configuration information including first information including a slot level bitmap related to a reserved resource and second information including a symbol level bitmap related to the reserved resource, receiving, from the base station, downlink control information (DCI) including indication information related to a use of the reserved resource, and receiving, from the base station, the downlink information based on the resource reservation configuration information and the indication information.