Uplink Downlink Rescheduling for Frequency Switching Time Gaps

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Solution Overview

Problem

Wireless communication systems face inefficiencies due to uplink and downlink transmissions overlapping with time gaps during frequency resource switching, leading to potential data loss and increased latency in 5G NR and LTE technologies.

Innovation Solution

Implementing methods to reschedule uplink and downlink transmissions to avoid time gaps during frequency resource switching, extending frequency resource hops, and adjusting frequency hopping configurations based on conditions such as channel quality and scheduled resources.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Adaptability or versatility

If frequency resource switching is implemented to improve spectral efficiency and adaptability, then system flexibility and interference mitigation are improved, but transmission overlaps with time gaps occur causing data loss and increased latency

Engineering Contradiction:

Improvefrequency resource switching flexibilityVSAvoidtransmission reliability

Core Design Contradiction:

Adaptability or versatilityVSReliability

Solution Approach 1:

The patent applies preliminary action by determining whether a transmission overlaps with a frequency resource switching time gap before the transmission occurs. The network entity or UE proactively identifies the potential overlap and takes rescheduling action in advance, preventing the harmful effect of transmission interruption rather than reacting after data loss occurs.

Inventive Principle:

Principle #10Preliminary action

2Productivity

If frequency resource switching is performed to mitigate interference and improve spectral efficiency, then system performance is improved, but transmission latency increases due to time gap interruptions

Engineering Contradiction:

Improvespectral efficiencyVSAvoidtransmission latency

Core Design Contradiction:

ProductivityVSLoss of time

Solution Approach 1:

The patent applies dynamics by making the frequency hopping configuration adjustable and conditional. The system dynamically determines whether to apply frequency hopping based on current transmission conditions, and dynamically reschedules transmissions that would overlap with switching time gaps. This dynamic adaptation allows the system to maintain spectral efficiency while minimizing latency penalties.

Inventive Principle:

Principle #15Dynamics

3Productivity

If frequency hopping configuration is adjusted to extend frequency resource hops, then resource utilization is improved, but device complexity increases due to additional determination and rescheduling operations

Engineering Contradiction:

Improveresource utilizationVSAvoidscheduling complexity

Core Design Contradiction:

ProductivityVSDevice complexity

Solution Approach 1:

The patent applies self-service by enabling the UE to autonomously determine whether its scheduled transmission overlaps with a frequency resource switching time gap. The UE performs the determination and self-rescheduling based on configured parameters, reducing the signaling overhead and processing burden on the network entity while maintaining improved resource utilization.

Inventive Principle:

Principle #25Self-service

Data Source

PatentUS11800530B2Frequency resource hop extension, skipping, and modification, and rescheduling uplink and downlink transmissions that overlap with time gap for frequency resource switching

Publication Date: 2023.10.24 QUALCOMM INC

AI summary

Certain aspects of the subject matter described in this disclosure can be implemented in a method for wireless communication by a user equipment (UE). The method generally includes receiving, from a network entity, signaling that schedules an uplink or downlink transmission on resources that overlap with a time gap for switching from a first set of frequency resources to a second set of frequency resources; and taking an action to process the uplink or downlink transmission so that the uplink or downlink transmission does not overlap with the time gap.