Uplink Resource Allocation Offset for 5G Terminal
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Solution Overview
Problem
In 5G mobile communication systems, there is a challenge in effectively using uplink resources due to temporal difficulties in reallocating resources after a user equipment (UE) indicates non-use, leading to unacceptable transmission delays.
Innovation Solution
A terminal and base station system that allows a UE to receive configuration information for continuous uplink resource allocation and transmit flag information indicating non-use after a configured offset, enabling efficient resource reuse by the base station.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If the base station waits for resource release confirmation from the terminal before reallocating uplink resources, then resource allocation accuracy is improved, but transmission delay increases
Solution Approach 1:
The terminal transmits the non-use indication flag in advance at a predetermined offset before the actual uplink resource release time. This preliminary action allows the base station to know ahead of time that resources will be released, enabling it to prepare for reallocation without waiting for confirmation delays, thus resolving the contradiction between allocation accuracy and transmission delay.
Solution Approach 2:
The system introduces a predetermined offset period between when the terminal indicates non-use and when the resource is actually released. This cushioning period allows the base station to process the non-use indication and prepare reallocation plans in advance, ensuring accurate resource management while minimizing the actual delay impact on data transmission.
2Productivity
If the base station reallocates uplink resources immediately upon receiving non-use indication, then resource utilization is improved, but allocation accuracy deteriorates due to temporal processing difficulties
Solution Approach 1:
The terminal provides advance notice of resource non-use through the flag transmission at a predetermined offset. This preliminary information allows the base station to plan and execute reallocation with proper processing time, maintaining allocation accuracy while achieving high resource utilization by minimizing idle periods.
Solution Approach 2:
The predetermined offset acts as an intermediary time buffer between the terminal's non-use indication and the actual resource release. This intermediary period allows the base station to process the indication accurately and coordinate reallocation with other terminals, ensuring both high utilization and accurate allocation.
3Productivity
If the terminal transmits flag information indicating non-use of uplink resources, then resource reuse efficiency is improved, but transmission delay increases due to the configured offset period
Solution Approach 1:
The terminal transmits the non-use flag in advance at a predetermined offset before the actual resource release. This preliminary transmission enables the base station to prepare for reallocation ahead of time, improving resource reuse efficiency while the offset period is optimized to minimize the perceived delay impact on actual data transmission.
Data Source
AI summary
A terminal according to an aspect of the present disclosure includes: a memory storing a program; and one or more processors configured to execute the program to: receive, from a base station, a radio resource control message including information for configuring a periodicity of a physical uplink shared channel resource for a configured grant transmission; and transmit on a physical uplink shared channel resource, to the base station, information indicating that the terminal is not to use the physical uplink shared channel resource in the period of the configured grant transmission.