Uplink Transmission Overlap Handling in Mobile Communications

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Solution Overview

Problem

In mobile communications, user equipment (UE) faces challenges in handling overlapped uplink transmission opportunities, where multiple resource allocations and traffic types are configured, leading to conflicts and the need for prioritization mechanisms to ensure proper transmission according to different service requirements.

Innovation Solution

The proposed solution involves an apparatus that receives configurations for multiple transmission opportunities, determines overlap, and applies predetermined rules to prioritize these opportunities, allowing the UE to perform transmissions based on priority, such as prioritizing dynamic grants over configured grants, larger grants, or grants carrying higher priority logical channels.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Reliability

If multiple uplink grants are configured for UE to handle different service types, then service coverage and transmission reliability are improved, but resource allocation conflicts and transmission timing conflicts occur when grants overlap

Engineering Contradiction:
Improvetransmission reliabilityVSAvoidresource allocation conflict
Core Design Contradiction:
ReliabilityVSDevice complexity

Solution Approach 1:

The patent applies parameter changes by introducing priority parameters associated with different uplink grants and service types. When transmission opportunities overlap, the system changes the state of resource allocation by selecting grants based on priority parameters, service types (eMBB, URLLC, eMTC), and grant types (dynamic, configured). This resolves conflicts by dynamically adjusting which grant is executed based on predefined priority rules rather than treating all grants equally.

Inventive Principle:
Principle #35Parameter changes

2Loss of time

If UE prioritizes dynamic grants over configured grants to meet latency requirements, then URLLC transmission reliability is improved, but eMBB transmission opportunities may be delayed or dropped

Engineering Contradiction:
Improvetransmission latencyVSAvoiddata transmission throughput
Core Design Contradiction:
Loss of timeVSProductivity

Solution Approach 1:

The patent applies local quality by assigning different priority levels and characteristics to different types of uplink grants based on their service requirements. Dynamic grants used for URLLC are given higher priority with stricter timing requirements, while configured grants for eMBB have lower priority but higher throughput potential. This allows the system to optimize locally for latency-critical transmissions without completely sacrificing overall system productivity, as each grant type is treated according to its specific quality requirements.

Inventive Principle:
Principle #3Local quality

3Reliability

If UE transmits on higher priority grants and drops lower priority grants, then transmission reliability for critical services is improved, but resource utilization efficiency decreases due to dropped transmission opportunities

Engineering Contradiction:
Improvepacket transmission success probabilityVSAvoidwasted transmission resources
Core Design Contradiction:
ReliabilityVSLoss of energy

Solution Approach 1:

The patent applies feedback mechanisms where the network monitors transmission outcomes and adjusts grant configurations accordingly. When lower priority grants are dropped due to overlaps, the system receives feedback about these dropped opportunities and can adjust future grant allocations, priority assignments, or overlap handling strategies. This feedback loop helps optimize the balance between reliability and resource efficiency over time, reducing wasted resources while maintaining critical transmission success rates.

Inventive Principle:
Principle #23Feedback

Data Source

PatentUS11659587B2Method and apparatus for handling overlapped transmission opportunities in mobile communications
Publication Date: 2023.05.23 HFI INNOVATION INC
  • US11659587B2 patent drawing
  • US11659587B2 patent drawing
  • US11659587B2 patent drawing

AI summary

Various solutions for handling overlapped transmission opportunities with respect to user equipment and network apparatus in mobile communications are described. An apparatus may receive configurations allocating a first transmission opportunity and a second opportunity. The apparatus may determine whether the first transmission opportunity and the second transmission opportunity are overlapped. The apparatus may determine a priority of at least one of the first transmission opportunity and the second transmission opportunity according to a predetermined rule in an event that the first transmission opportunity and the second transmission opportunity are overlapped. The apparatus may perform a transmission according to the priority.