5G NR Resource Preemption for Flexible Radio Service Delivery
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Solution Overview
Problem
Existing 5G wireless systems face challenges in efficiently allocating resources for different communication types such as eMBB, URLLC, and mMTC, leading to conflicts and interference.
Innovation Solution
The implementation of one or more radio resource allocation regions (RRARs) that can preempt transmission of data for a first type of transmission, allowing data to be transmitted without prior scheduling, and the WTRU receives an indication of preemption in a subsequent frame for processing.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Loss of time
If traditional scheduling methods are used for resource allocation, then resource allocation can be planned in advance, but latency increases and flexibility decreases
Solution Approach 1:
The patent applies preliminary action by pre-configuring RRARs with predefined time-frequency resources and transmission parameters before actual data transmission occurs. This allows the system to prepare resource allocation structures in advance while maintaining the ability to execute transmissions immediately when needed, thus reducing latency without requiring complex real-time scheduling decisions.
Solution Approach 2:
The patent implements dynamics by enabling dynamic activation and deactivation of RRARs based on real-time traffic conditions. The system can activate RRARs when data needs to be transmitted and deactivate them when idle, allowing flexible adaptation to changing network conditions while maintaining low latency performance through rapid resource switching.
2Reliability
If dedicated resources are allocated for each communication type, then transmission reliability is improved, but resource utilization efficiency decreases
Solution Approach 1:
The patent applies universality by creating RRARs that can serve multiple communication types (eMBB, URLLC, mMTC) within a single resource allocation structure. Different communication types share the same RRAR framework but are differentiated through prioritization mechanisms and parameter configurations, allowing one resource structure to perform multiple functions simultaneously, thus improving both reliability and utilization efficiency.
Solution Approach 2:
The patent implements local quality by assigning different prioritization levels and transmission parameters to different communication types within the same RRAR. Each communication type receives tailored treatment based on its specific requirements (e.g., lower priority for eMBB, higher priority for URLLC) while sharing the overall resource structure, thereby maintaining reliability for critical services without sacrificing resource utilization efficiency.
3Adaptability or versatility
If RRARs are used for preemptive transmission, then transmission flexibility is improved, but system complexity increases
Solution Approach 1:
The patent applies segmentation by dividing the time-frequency resource space into discrete RRAR units that can be independently activated, deactivated, or reallocated. This segmentation allows the system to manage complexity through modular resource units rather than handling the entire resource allocation as a single complex problem, while maintaining high flexibility in transmitting different communication types.
Solution Approach 2:
The patent implements feedback mechanisms that monitor traffic conditions and RRAR utilization status, enabling automatic adjustment of resource allocation decisions. The system uses feedback information to dynamically activate or deactivate RRARs based on actual transmission needs, reducing the operational complexity of managing flexible resource allocation while maintaining high adaptability to changing conditions.
Data Source
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AI summary
Embodiments include methods, systems, and apparatuses for receiving a first type of transmission and a second type of transmission. A WTRU may receive a first downlink control information (DCI) during a first downlink (DL) transmission interval allocating first radio resources in the first DL transmission interval for reception of a first type of transmission. The WTRU may receive data from the first type of transmission in the first radio resources. The WTRU may receive data from a second type of transmission in second radio resources that include one or more predetermined regions within the first radio resources. The WTRU may receive a second DCI during a subsequent second DL transmission interval indicating that the data from the first type of transmission was preempted by the data from the second type of transmission. The WTRU may process the data from the first type of transmission based on the second DCI.