Sidelink Resource Reservation Mapping for Power Saving
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Solution Overview
Problem
Current sidelink communication technologies face challenges in efficiently managing resource reservations while implementing power saving modes, leading to potential resource loss and inefficiencies due to periodic on-durations and off-durations in power saving modes.
Innovation Solution
The method involves mapping logical slots to physical slots based on periodic on-durations of power saving modes for sidelink communication, allowing for efficient resource reservation and indication using sidelink control information (SCI), thereby avoiding resource reservations during off-durations and optimizing resource usage.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If resource reservation is implemented in sidelink communication without considering power saving modes, then resource allocation efficiency is improved, but power consumption increases due to continuous monitoring during off-durations
Solution Approach 1:
The patent applies dynamics by making the resource reservation mechanism adaptive to the power saving mode configuration. The system dynamically adjusts resource reservation behavior based on whether the transmitting UE is in on-duration or off-duration, allowing the resource allocation efficiency to be maintained during active periods while avoiding unnecessary resource monitoring and reservation during sleep periods, thus resolving the contradiction between productivity and energy consumption.
Solution Approach 2:
The patent utilizes periodic action by aligning resource reservation operations with the periodic on-durations of the power saving mode. Resource reservations are performed only during on-durations when the UE is awake and can properly indicate and utilize reserved resources. This periodic synchronization ensures that resource allocation efficiency is maintained during active periods while eliminating wasteful power consumption during off-durations when the UE would not be monitoring anyway.
2Adaptability or versatility
If resource reservations are made during off-durations in power saving mode, then resource availability is improved, but resource loss occurs as resources cannot be properly utilized during sleep periods
Solution Approach 1:
The patent applies preliminary action by performing resource reservation operations in advance during on-durations before the UE enters off-duration. The transmitting UE reserves resources and indicates these reservations through SCI messages while still awake and capable of communication. This ensures that resources are properly allocated and made available for future transmissions without attempting to reserve resources during off-durations when the UE cannot properly indicate or utilize them, thus preventing resource loss while maintaining resource availability.
3Reliability
If SCI transmission is performed continuously without considering power saving modes, then communication reliability is improved, but power consumption increases during off-durations
Solution Approach 1:
The patent applies periodic action by restricting SCI transmission to only on-durations of the power saving mode. The transmitting UE sends SCI messages indicating resource reservations only when it is awake and can ensure proper reception by the receiving UE. This periodic transmission approach maintains communication reliability during active periods while eliminating unnecessary power consumption during off-durations when neither UE would be monitoring or transmitting anyway.
Data Source
AI summary
Apparatus, methods, and computer-readable media for facilitating a resource reservation indication for mode 2 resource allocation with power saving are disclosed herein. An example method for wireless communication at a wireless device includes mapping one or more slots of a sidelink resource reservation to physical slots based on periodic on-durations of a power saving mode for sidelink communication. The example method also includes transmitting SCI indicating the sidelink resource reservation that indicates the one or more slots. Another example method for wireless communication at a first wireless device includes receiving SCI indicating a sidelink resource reservation for a second wireless device, the SCI indicating one or more slots of the sidelink resource reservation. The example method also includes mapping the one or more slots to physical slots based on periodic on-durations of a power saving mode for sidelink communication.