Primary Receiver State Feedback for Low-Power Wireless Scheduling
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Solution Overview
Problem
The challenge in existing wireless communication systems is ensuring consistent understanding between a terminal device and a network device regarding the state of the primary receiver, particularly when the terminal device enters a low power state, which affects scheduling and leads to resource waste due to inconsistent wake-up latencies.
Innovation Solution
The terminal device reports information about its primary receiver state to the network device, and the network device determines the state based on this information, ensuring both parties have a consistent understanding, allowing the network to schedule downlink transmissions accordingly to avoid resource waste.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Use of energy by moving object
If the terminal device uses a low power receiver state, then power consumption is reduced, but the network device cannot accurately determine the wake-up latency leading to scheduling failures
Solution Approach 1:
The terminal device feeds back receiver state information to the network device through uplink signaling (e.g., RRC messages, MAC CE, or PUCCH). This feedback mechanism enables the network device to accurately determine the wake-up latency of the terminal's primary receiver, ensuring proper scheduling timing while the terminal operates in low power states. The feedback resolves the information loss that would otherwise occur when the terminal switches to low power receiver modes.
2Productivity
If the network device schedules downlink transmission during terminal wake-up duration, then resource utilization improves, but downlink receipt failures occur due to inconsistent state understanding
Solution Approach 1:
The network device performs preliminary determination of the terminal's receiver state and wake-up latency before scheduling downlink transmissions. By using the feedback information to pre-calculate appropriate scheduling timing that accounts for the terminal's wake-up duration, the network ensures transmissions occur only when the terminal is actually ready to receive, preventing resource waste and reception failures.
Solution Approach 2:
The continuous feedback loop allows the network device to adapt its scheduling decisions based on the terminal's actual receiver state, ensuring reliable downlink receipt while maximizing resource utilization.
Data Source
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AI summary
A wireless communication method, and a terminal device and a network device, which are conductive to ensuring that a terminal device and a network device have a consistent understanding of the state of a main receiver of the terminal device. The method comprises: a terminal device sending first information to a network device, wherein the first information is related to the state of a main receiver of the terminal device when the terminal device enters a low-power-consumption state.