Uplink Semi-Persistent Scheduling Release Acknowledgment
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Solution Overview
Problem
Current wireless telecommunications systems lack a means for user equipment (UE) to acknowledge the release of uplink semi-persistent scheduling resources, leading to unnecessary battery power consumption and signal interference as UE may continue transmitting in non-allocated resources without the access device's awareness.
Innovation Solution
The system allows the UE to acknowledge uplink resource release using a DCI format 1A or through radio resource control signaling, enabling the access device to recognize the resource release and allocate it to another UE.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If UE continues transmitting in non-allocated resources without acknowledgment mechanism, then resource allocation efficiency deteriorates, but battery power consumption increases and signal interference occurs
Solution Approach 1:
The patent implements an acknowledgment feedback mechanism where the access device sends resource release signaling to the UE, and the UE responds with an acknowledgment signal. This feedback loop ensures the access device is notified when UE releases uplink resources, preventing the UE from continuing to transmit in non-allocated resources. The feedback mechanism resolves the contradiction by enabling efficient resource reallocation while preventing unnecessary energy consumption through proper resource release confirmation.
2Productivity
If UE continues transmitting in non-allocated resources without acknowledgment mechanism, then resource allocation efficiency deteriorates, but signal interference increases
Solution Approach 1:
The acknowledgment feedback mechanism enables the access device to know when the UE has released uplink resources. By receiving the acknowledgment signal, the access device can confirm resource release and avoid allocating those resources to other UEs simultaneously, thereby preventing signal interference. This feedback-based coordination resolves the contradiction between resource allocation efficiency and interference prevention.
3Reliability
If access device implements acknowledgment mechanism for resource release, then resource management accuracy improves, but system complexity increases
Solution Approach 1:
The patent implements a feedback mechanism using existing signaling structures (PUCCH, PUSCH, or PDCCH) to carry acknowledgment signals. By leveraging existing uplink control channels and resource structures, the solution achieves reliable resource management without requiring entirely new communication infrastructure. The feedback mechanism confirms resource release status, improving resource management accuracy while utilizing established system components to minimize added complexity.
Solution Approach 2:
The acknowledgment signal can be transmitted through multiple existing channels (PUCCH, PUSCH, or PDCCH), making the solution versatile and adaptable to different system configurations. This multi-functionality approach allows the same acknowledgment mechanism to work across various uplink resource types and channel structures, improving resource management accuracy without significantly increasing system complexity through dedicated new channels or protocols.
Data Source
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AI summary
A method is provided for acknowledging a semi-persistent scheduling (SPS) uplink resource release. The method comprising receiving an uplink SPS resource release signal over a physical downlink control channel (PDCCH), and sending an acknowledgement (ACK) to confirm the reception of the uplink SPS resource release signal. Also provided is a user equipment (UE) comprising a processor configured to receive an uplink SPS resource release signal over a PDCCH, and transmit an ACK to confirm the reception of the uplink SPS resource release signal.