UE Resource Conflict Handling in 5G NR Systems
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Solution Overview
Problem
In cellular networks, particularly in scenarios with high demand for mobile services and high data rates, challenges arise in reliability and capacity due to conflicting resource assignments between base stations and mobile devices, making efficient communication and resource management difficult.
Innovation Solution
Implementing advanced communication protocols and circuitry configurations, such as those described in the context of 3GPP, LTE, LTE-A, NR, and 5G networks, which include mechanisms for handling conflicting resource assignments by configuring User Equipment (UE) to adjust transmissions based on downlink control information formats, allowing for dynamic cancellation of uplink channels and frequency hopping to optimize resource utilization.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If dynamic resource assignment is implemented to handle conflicting transmissions, then network reliability is improved, but device complexity increases due to additional cancellation indications and determination logic
Solution Approach 1:
The patent introduces a base station as an intermediary that sends cancellation indications to the UE. This intermediary mechanism resolves the conflict between downlink and uplink transmissions by providing external control signals that guide the UE's transmission behavior, thereby improving network reliability without requiring complex internal decision-making logic at the UE side.
Solution Approach 2:
The system implements feedback through cancellation indications sent from the base station to the UE. This feedback mechanism allows the network to inform the UE about potential transmission conflicts and guide the UE's resource usage, enabling reliable conflict resolution while keeping the UE's determination logic relatively simple by providing clear external instructions.
2Productivity
If transmission cancellation is implemented to resolve resource conflicts, then capacity is improved, but loss of time occurs due to cancelled transmissions
Solution Approach 1:
The patent implements dynamic resource allocation where the UE can adapt its transmission behavior based on received cancellation indications. This dynamic approach allows the system to optimize network capacity by resolving conflicts in real-time, while the flexibility enables quick switching between cancellation and continuation scenarios, minimizing time loss when cancellations are not required.
Solution Approach 2:
The system changes the transmission parameter state dynamically based on cancellation indications. When a cancellation indication is received, the transmission parameter changes from active to cancelled; when no cancellation is indicated, transmission continues normally. This parameter change mechanism resolves resource conflicts to improve capacity while limiting time loss to only those specific instances where conflicts actually occur.
Data Source
AI summary
Embodiments of a User Equipment (UE) and methods of communication are generally described herein. If the UE is configured by higher layers to transmit, in a set of symbols of a slot, a sounding reference signal (SRS), a physical uplink control channel (PUCCH), a physical uplink shared channel (PUSCH), or a physical random access channel (PRACH); and if a downlink control information (DCI) format indicates that the UE is to receive, in a subset of the set of symbols of the slot, channel state information reference signals (CSI-RS) or a physical downlink shared channel (PDSCH): the UE may: cancel transmission of the PUCCH, the PUSCH, or the PRACH in remaining symbols from the set of symbols; and may cancel transmission of the SRS in remaining symbols from the subset of symbols.