Time Domain Resource Assignment for Low Latency Wireless Data
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Solution Overview
Problem
Current wireless communication systems face challenges in achieving low latency and high reliability for data transmission, particularly in 5G communication systems, due to the complexity of scheduling and resource allocation in time-frequency domains.
Innovation Solution
The proposed solution involves an operating method for user equipment (UE) and base stations in wireless communication systems, which includes receiving and transmitting control information for time domain resource assignment of data channels. This method utilizes physical downlink control channels (PDCCH) and upper layer signaling to efficiently schedule and allocate resources, ensuring high reliability and low latency.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If complex scheduling and resource allocation methods are used in time-frequency domains, then data transmission capacity is improved, but transmission latency increases and reliability decreases
Solution Approach 1:
The patent segments the time domain into multiple time intervals (first time interval, second time interval, etc.) and divides resource allocation into different phases: initial resource allocation via first control information, and dynamic re-allocation via second control information. This segmentation allows the system to maintain high transmission capacity while reducing latency by handling resource allocation in staged manner rather than requiring complex centralized scheduling.
Solution Approach 2:
The patent applies preliminary action by transmitting first control information before the actual data transmission to establish initial resource allocation. This allows the UE to prepare for reception in advance, and enables dynamic adjustments through second control information without requiring complex real-time scheduling, thus reducing latency while maintaining capacity.
2Productivity
If complex scheduling and resource allocation methods are used in time-frequency domains, then data transmission capacity is improved, but transmission reliability decreases
Solution Approach 1:
The patent implements feedback mechanisms where the base station transmits second control information based on channel conditions and transmission status. The UE feeds back reception status information to the base station, enabling dynamic adjustment of resource allocation. This feedback loop ensures reliable transmission by allowing the system to adapt to changing conditions without requiring overly complex scheduling algorithms.
Solution Approach 2:
The patent introduces dynamic resource allocation where the base station can adjust time domain resources based on real-time channel conditions and transmission needs. The system transitions from static resource allocation to dynamic adjustment, improving reliability by adapting to varying network conditions while avoiding the complexity of predicting all possible scenarios in advance.
3Adaptability or versatility
If dynamic resource allocation is implemented, then transmission adaptability is improved, but control information processing complexity increases
Solution Approach 1:
The patent segments control information into two distinct types: first control information for initial resource allocation and second control information for dynamic adjustments. This segmentation simplifies processing by dividing the control signal into manageable portions, each handling specific aspects of resource allocation, thereby reducing overall processing complexity while maintaining adaptability.
Solution Approach 2:
The patent applies partial action by implementing dynamic resource allocation only when necessary based on channel conditions, rather than continuously adjusting resources. This selective approach to dynamic allocation maintains adaptability when needed while avoiding unnecessary processing complexity during stable transmission conditions.
Data Source
AI summary
An operating method of a user equipment (UE) for time domain resource assignment of a data channel in a wireless communication system, the operating method including: receiving control information related to the time domain resource assignment of the data channel from a base station via a physical downlink control channel (PDCCH) and upper layer signaling, and determining the time domain resource assignment of the data channel, based on the received control information.