eMBB Power Backoff for URLLC Multiplexing
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Solution Overview
Problem
In wireless communication systems, especially in 5G networks, the coexistence of enhanced mobile broadband (eMBB) and ultra reliable low latency communication (URLLC) services often results in wasted resources due to eMBB traffic being preempted by URLLC traffic when both share the same time-frequency resources, leading to inefficient power utilization.
Innovation Solution
Implementing power sharing between eMBB and URLLC traffic by reducing the transmission power of eMBB traffic using a power backoff value, allowing the saved power to be utilized by URLLC traffic, thereby enabling simultaneous transmission without complete resource preemption.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If eMBB and URLLC traffic share the same time-frequency resources, then resource utilization is improved, but eMBB traffic is preempted by URLLC traffic leading to wasted resources
Solution Approach 1:
The patent applies parameter changes by dynamically adjusting transmission power levels for different service types. When URLLC traffic arrives, the system changes the power parameter for eMBB traffic (applying power backoff) rather than completely preempting the resources, allowing both services to coexist with modified power parameters that prioritize URLLC while maintaining partial eMBB transmission.
2Reliability
If URLLC traffic preempts eMBB traffic to ensure low latency, then reliability is improved, but resource efficiency deteriorates due to complete preemption
Solution Approach 1:
The patent applies partial action by implementing power backoff for eMBB traffic instead of complete preemption. This partial measure reduces URLLC latency and improves reliability by allocating sufficient power to URLLC transmissions, while simultaneously maintaining some eMBB transmission at reduced power levels, thereby improving overall resource efficiency compared to full preemption.
3Loss of energy
If transmission power is reduced for eMBB traffic to accommodate URLLC, then power utilization is improved, but eMBB transmission quality may deteriorate
Solution Approach 1:
The patent applies dynamics by making transmission power levels adaptive rather than static. The system dynamically adjusts power allocation based on traffic conditions, service type priorities, and channel states. Power backoff for eMBB is applied selectively and temporarily only when URLLC traffic requires resources, allowing the system to respond flexibly to changing conditions while maintaining both services' quality requirements.
Data Source
AI summary
Aspects of the present disclosure relate to wireless communications and, more particularly, to power control and management for enhanced mobile broadband (eMBB)/ultra-reliable low latency (URLLC) multiplexing. A method for wireless communications that may be performed by a user equipment (UE) is provided. The method generally includes receiving, from a base station (BS), scheduling information scheduling the first UE for communication, with the BS, according to a first communications service type, receiving signaling indicating a second UE is scheduled for communication with the BS according to a second communications service type, and communicating with the BS according to the first communications service type at a reduced transmission power relative to a transmission power used for communicating according to the second communications service type.