Dynamic Uplink Resource Allocation for 5G eMBB and URLLC Multiplexing
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Solution Overview
Problem
In 5G systems, existing methods for transmitting Enhanced Mobile Broadband (eMBB) and Ultra Reliable and Low Latency Communication (URLLC) services simultaneously face challenges in optimizing uplink channel resources, leading to potential waste and performance impacts due to overlapping time-domain resources and differing service requirements.
Innovation Solution
A method where a User Equipment (UE) and base station dynamically adjust transmission in time-frequency resource blocks based on the end and start times of these blocks, allowing flexible resource allocation by either giving up transmission in one block or transmitting in both, ensuring non-overlapping signals and optimizing resource usage.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If HARQ-ACKs for different service requirements are multiplexed into one uplink channel, then the risk of losing HARQ-ACK is reduced, but the transmission flexibility and resource allocation efficiency deteriorate
Solution Approach 1:
The patent segments the bit block into multiple bit subblocks, where each bit subblock corresponds to different service requirements (e.g., eMBB and URLLC). This allows independent handling of different service types while transmitting them through the same uplink channel, thus maintaining both reliability and flexibility.
2Productivity
If uplink data of sTTI and uplink data of TTI are transmitted in the same subframe, then resource utilization improves, but transmission reliability deteriorates due to potential conflicts
Solution Approach 1:
The patent applies local quality by assigning different priorities to different bit subblocks within the same bit block. When resource conflicts occur, the system can selectively prioritize certain services (e.g., URLLC) over others (e.g., eMBB) by giving up transmission of lower-priority bit subblocks, thus maintaining transmission reliability for critical services while still achieving resource utilization improvement.
3Device complexity
If transmission resources are allocated rigidly without dynamic adjustment, then system complexity is reduced, but spectrum efficiency deteriorates due to resource wastage
Solution Approach 1:
The patent introduces dynamic resource allocation by allowing the UE to adjust transmission decisions based on the overlap relationship between first and second time-frequency resource blocks. The system dynamically determines whether to transmit or give up transmission of certain bit subblocks based on real-time resource availability, thus improving spectrum efficiency without requiring complex reconfiguration of the entire system.
Data Source
AI summary
The disclosure provides a method and a device in a User Equipment (UE) and a base station for wireless communication. The UE first receives a first signaling, the first signaling indicating to transmit a first bit block in a first time-frequency resource block, then receives a second signaling, the second signaling indicating to transmit a second bit block in a second time-frequency resource block, and finally transmits a second radio signal in the second time-frequency resource block; the second bit block is used for generating the second radio signal; the first bit block includes a first bit subblock and a second bit subblock; the transmission mode in the first time-frequency resource block is associated with a relationship between an end time of time-frequency resources in the first time-frequency resource block assigned to the first bit subblock and a start time of the second time-frequency resource block.