Uplink Collision Handling via Service-Type Prioritization
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Solution Overview
Problem
In wireless communication systems, user equipment (UE) prioritization rules do not adequately differentiate between enhanced mobile broadband (eMBB) and ultra-reliable low-latency communications (URLLC) service types, leading to inefficiencies and dropped or scaled back URLLC traffic when total uplink transmission power exceeds a threshold, failing to meet reliability and latency thresholds.
Innovation Solution
Implementing priority rules that account for service types such as eMBB and URLLC by configuring different sets of rules based on reliability and latency thresholds, prioritizing URLLC traffic and considering the content of service types to manage uplink transmission power and channel allocation effectively.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If uniform priority rules are applied to all service types, then device complexity is reduced, but URLLC traffic reliability deteriorates due to inadequate differentiation between service types
Solution Approach 1:
The patent applies different priority rules to different service types (eMBB vs. URLLC) based on their specific requirements. The system determines service type characteristics and applies tailored priority handling, including different power scaling factors and drop priorities for URLLC compared to eMBB services, thereby achieving local optimization without uniform complexity throughout the system.
Solution Approach 2:
The patent changes priority parameters dynamically based on service type characteristics. When URLLC traffic is detected, the system modifies power scaling factors, drop priorities, and transmission parameters specifically for URLLC service type, allowing the system to adapt priority handling parameters rather than using fixed uniform rules.
2Reliability
If URLLC traffic is prioritized over eMBB traffic, then URLLC reliability is improved, but eMBB throughput deteriorates due to reduced channel allocation
Solution Approach 1:
The patent implements dynamic priority handling where the system determines service type characteristics in real-time and adjusts priority rules accordingly. The power scaling factors and drop priorities are dynamically modified based on detected service types, allowing flexible adaptation between URLLC reliability requirements and eMBB throughput needs rather than static prioritization.
Solution Approach 2:
The patent applies partial prioritization by selectively applying enhanced priority rules only to URLLC traffic while maintaining standard handling for eMBB traffic. The system uses power scaling factors that provide partial power reduction for URLLC rather than complete exclusion, and applies drop priorities selectively based on service type characteristics.
3Power
If power scaling is applied to reduce total uplink power, then power threshold compliance is improved, but transmission quality deteriorates due to excessive power reduction
Solution Approach 1:
The patent applies different power scaling factors to different service types based on their specific power requirements and characteristics. URLLC services receive different power scaling treatment compared to eMBB services, with the system determining appropriate power reduction levels for each service type to maintain transmission quality while complying with total power thresholds.
Solution Approach 2:
The patent dynamically adjusts power scaling parameters based on detected service type characteristics. When URLLC traffic is identified, the system modifies power scaling factors specifically for that service type rather than applying uniform scaling, allowing optimization of power reduction to maintain transmission quality for critical URLLC communications.
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AI summary
Techniques are described herein for collision handling in uplink transmissions. A user equipment (UE) may have more information to transmit during an uplink transmission than the allocated resources can handle. The UE may identify that an uplink transmission includes a plurality of different channels. The UE may exclude service types or scale the transmit power of service types based on performing a prioritization of the different channels in the uplink transmission. In some cases, the UE may prioritize ultra-reliable low-latency communications (URLLC) service types over enhanced mobile broadband (eMBB) service types. In some cases, the content of the URLLC service types and the content of the eMBB service types may be considered when prioritizing. The UE may be capable of configuring different sets of priority rules based on reliability thresholds and latency thresholds associated with the service types.