Uplink Control and Data Resource Allocation in 5G Wireless Systems
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Solution Overview
Problem
Current wireless communication systems, particularly in 5G, face inefficiencies in radio resource utilization and lack flexibility in uplink data signal transmission due to non-overlapping radio resources allocated for URLLC and mMTC services, limiting large-scale connections and flexibility in uplink control signal transmission.
Innovation Solution
A mechanism where a base station allocates uplink control radio resources from a pre-configured pool to user equipment, allowing them to transmit uplink control messages and select uplink data radio resources independently within the same pool, enabling direct uplink data signal transmission without requiring dedicated scheduling, thereby improving resource utilization and flexibility.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If non-overlapping UE-specific uplink radio resources are allocated in advance to URLLC and mMTC user equipments, then transmission reliability and low latency are achieved, but radio resource utilization efficiency is reduced and large-scale connection capability is limited
Solution Approach 1:
The uplink radio resources are segmented into two distinct parts: uplink control radio resources (for control signals) and uplink data radio resources (for data transmission). This segmentation allows different user equipments to share the data resources while maintaining dedicated control resources, thereby improving overall resource utilization while preserving transmission reliability.
Solution Approach 2:
The pre-configured radio resource pool serves multiple functions: it provides both uplink control radio resources and uplink data radio resources. This multi-functionality allows the same resource pool to support both control signaling and data transmission, improving radio resource utilization efficiency while maintaining the ability to achieve reliable low-latency transmission.
2Reliability
If non-overlapping UE-specific uplink radio resources are allocated in advance to URLLC and mMTC user equipments, then transmission reliability and low latency are achieved, but flexibility in uplink data signal transmission is reduced
Solution Approach 1:
By separating control resources from data resources, the system allows flexible selection of data radio resources from the pre-configured pool based on actual transmission needs, while control resources remain dedicated for reliable signaling. This enables adaptable data transmission while maintaining reliable control.
Solution Approach 2:
The system dynamically allows user equipments to select appropriate uplink data radio resources from the pre-configured pool based on their specific transmission requirements, making the data transmission flexible and adaptable while maintaining reliable control through dedicated control resources.
3Measurement precision
If dedicated scheduling is required for uplink data signal transmission, then transmission control is precise, but transmission delay increases and resource utilization efficiency decreases
Solution Approach 1:
The system performs preliminary configuration of a radio resource pool in advance, including both control and data resources. This preliminary action eliminates the need for real-time scheduling grants, allowing user equipments to immediately transmit data without additional signaling delay, thus reducing transmission delay while maintaining control precision through pre-configured parameters.
Solution Approach 2:
User equipments autonomously select uplink data radio resources from the pre-configured pool based on their own transmission needs without requiring base station scheduling grants. This self-service mechanism eliminates scheduling delay and improves resource utilization efficiency while maintaining transmission control through pre-configured parameters.
Data Source
AI summary
A user equipment (UE) and a base station (BS) are provided. The UE receives an uplink transmission configuration message indicating a pre-configured radio resource pool and an uplink control configuration message indicating an uplink control radio resource in the pre-configured radio resource pool from the BS. The UE transmits an uplink control message on the uplink control radio resource and transmits an uplink data signal on an uplink data radio resource in the pre-configured radio resource pool so that the BS receives the uplink data signal according to the uplink control message.