Uplink Resource Pre-emption Indication in 5G Mixed Traffic
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Solution Overview
Problem
In wireless communication systems, particularly in next-generation 5G networks, there is a challenge in efficiently indicating pre-empted resource information between different communication scenarios like eMBB and URLLC, leading to interference and reduced detection performance due to differing transmission methods and resource sharing requirements.
Innovation Solution
A method and apparatus are provided to efficiently share uplink resources between eMBB and URLLC by segmenting and transmitting information on pre-empted resource regions, allowing for effective indication of pre-empted resources to User Equipment (UE), using techniques such as halting eMBB transmission during URLLC uplink channels and employing specific signaling methods like DCI and DMRS for resource management.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If uplink resources are shared between eMBB and URLLC with different transmission methods, then resource utilization efficiency is improved, but interference between different communication scenarios increases and detection performance deteriorates
Solution Approach 1:
The patent segments the uplink resource pool into dedicated eMBB resources and dedicated URLLC resources, with clear boundary definitions. This segmentation allows each communication scenario to operate on its designated resources while minimizing cross-interference, thereby maintaining high resource utilization efficiency without compromising detection performance.
2Device complexity
If pre-empted resource information is indicated using conventional methods, then resource management is simplified, but indication accuracy is insufficient and detection performance is reduced
Solution Approach 1:
The patent introduces a base station as an intermediary that centrally manages and coordinates pre-emption indications between URLLC and eMBB. The base station receives pre-emption requests from URLLC, determines the pre-empted resources, and sends accurate indications to affected eMBB UEs. This intermediary approach ensures high indication accuracy while keeping UE-side complexity low.
3Duration of action of stationary object
If eMBB transmission continues during URLLC uplink channels, then resource continuity is maintained, but transmission reliability of URLLC is compromised
Solution Approach 1:
The patent implements preliminary anti-action by having the base station proactively identify and indicate pre-empted resources to eMBB UEs before URLLC transmission occurs. eMBB UEs receive advance notification of upcoming pre-emption and can halt or pause their transmissions in advance, preventing interference with URLLC and ensuring URLLC transmission reliability while allowing eMBB to resume quickly after the pre-emption window.
Data Source
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AI summary
A method for receiving a signal in a user equipment (UE) from a base station (BS) in a wireless communication system is disclosed. The method comprises the steps of configuring a plurality of intervals of a specific time region for indicating whether to transmit the signal, through a higher layer; receiving an indicator for indicating whether to transmit the signal, for each of the plurality of intervals; and receiving a signal in each of the plurality of intervals in accordance with indication of the received indicator, wherein at least one of the plurality of intervals of the specific time region may have a first size, and the other intervals except the at least one interval may have a second size.