17443659. HANDLING OF HARQ AND RETRANSMISSION TIMERS FOR SIDELINK DRX OPERATIONS simplified abstract (QUALCOMM Incorporated)
HANDLING OF HARQ AND RETRANSMISSION TIMERS FOR SIDELINK DRX OPERATIONS
Organization Name
Inventor(s)
Kaidong Wang of San Diego CA (US)
Jelena Damnjanovic of Del Mar CA (US)
Ozcan Ozturk of San Diego CA (US)
HANDLING OF HARQ AND RETRANSMISSION TIMERS FOR SIDELINK DRX OPERATIONS - A simplified explanation of the abstract
This abstract first appeared for US patent application 17443659 titled 'HANDLING OF HARQ AND RETRANSMISSION TIMERS FOR SIDELINK DRX OPERATIONS
Simplified Explanation
The present disclosure relates to techniques for managing acknowledgement and retransmission timers in sidelink discontinuous reception (DRX) communication. In this context, a transmitter user equipment (UE) sends a repetition of a physical sidelink shared channel (PSSCH) to a receiver UE before entering an inactive state. The transmitter UE then returns to an active state to check for acknowledgment feedback from the receiver UE based on a timer. Depending on whether acknowledgment feedback is received during a defined duration, the transmitter UE takes appropriate actions.
- The transmitter UE sends a repetition of a physical sidelink shared channel (PSSCH) to a receiver UE before entering an inactive state.
- The transmitter UE returns to an active state based on a timer to monitor for acknowledgment feedback from the receiver UE.
- The transmitter UE remains in the active state for a defined duration.
- The transmitter UE takes actions based on whether acknowledgment feedback is received during the duration, indicating successful or failed reception of the PSSCH by the receiver UE.
Potential Applications
- Wireless communication systems
- Sidelink communication in cellular networks
- Internet of Things (IoT) devices
Problems Solved
- Efficient management of acknowledgement and retransmission timers in sidelink DRX communication
- Ensuring reliable reception of transmitted data by the receiver UE
- Optimizing power consumption and network resources
Benefits
- Improved reliability of sidelink communication
- Enhanced power efficiency by entering an inactive state during idle periods
- Efficient utilization of network resources
Original Abstract Submitted
Certain aspects of the present disclosure provide techniques for handling acknowledgement and retransmission timers during sidelink discontinuous reception (DRX) communication. An example method by a transmitter user equipment (UE) generally includes transmitting a first repetition of a physical sidelink shared channel (PSSCH) to a receiver UE prior to entering an inactive state, while the transmitter UE is operating in a sidelink discontinuous reception (DRX) mode; returning to an active state to monitor for acknowledgment feedback from the receiver UE, wherein the return is based on a first timer relative to an end of the first repetition of the PSSCH; remaining in the active state for a duration defined by a second timer; and taking one or more actions depending on whether the transmitter UE receives acknowledgment feedback during the duration indicating failed reception of the first repetition of the PSSCH by the receiver UE.
