Sidelink DRX Alignment for Wireless Power Efficiency
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Solution Overview
Problem
Existing wireless communication systems face challenges in aligning discontinuous reception (DRX) cycles between air interface and sidelink communications, leading to misalignment of active periods, increased power consumption, and reduced data throughput.
Innovation Solution
A method for wireless communication that involves receiving DRX configuration assistance information from a network, transmitting this information to a second user equipment via a sidelink interface, receiving sidelink DRX configuration information based on the assistance information, and then transmitting this information back to the network, thereby aligning air interface and sidelink DRX cycles.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Use of energy by moving object
If separate DRX configurations are used for air interface and sidelink communications, then each interface can be optimized independently, but active periods become misaligned causing increased power consumption
Solution Approach 1:
The patent combines air interface DRX configuration and sidelink DRX configuration into a unified DRX configuration managed by the network. The network provides a single DRX configuration that applies to both communication interfaces, ensuring active periods are aligned and preventing unnecessary wake-ups, thereby reducing power consumption while simplifying configuration management.
2Productivity
If DRX active periods are misaligned between air interface and sidelink, then independent optimization is possible, but data transmission efficiency decreases due to missed opportunities
Solution Approach 1:
The patent merges the DRX timing mechanisms for air interface and sidelink into a single synchronized system. By using a unified DRX configuration with common active periods, the system ensures that both interfaces are simultaneously active during designated time windows, maximizing data transmission opportunities and eliminating latency caused by misalignment.
Solution Approach 2:
The network pre-configures the unified DRX schedule before communications begin, establishing aligned active periods in advance. This preliminary configuration ensures that both air interface and sidelink transmissions are ready to occur simultaneously when needed, preventing transmission delays and optimizing data throughput from the outset.
3Productivity
If unified DRX configuration is implemented for both air interface and sidelink, then active periods are aligned improving efficiency, but configuration flexibility is reduced
Solution Approach 1:
The patent implements a dynamic unified DRX configuration system where the network can adjust DRX parameters (such as cycle length, active period duration, and offset values) based on real-time communication requirements. This dynamic adjustment capability maintains configuration flexibility while ensuring aligned active periods, allowing the system to adapt to varying traffic patterns and service requirements without sacrificing resource efficiency.
Data Source
AI summary
Certain aspects of the present disclosure provide techniques for air interface and sidelink discontinuous reception alignment for inactive/idle user equipment. A method performed by a user equipment (UE) includes receiving, from a second user equipment at a first user equipment over a sidelink interface, discontinuous reception (DRX) configuration assistance information and transmitting, from the first user equipment to a network via an air interface, the DRX configuration assistance information. The method may further include receiving, from the network at the first user equipment via the air interface: modified air interface DRX configuration information for the first user equipment, and sidelink DRX configuration information for the first user equipment and the second user equipment, wherein the sidelink DRX configuration information is based on the DRX configuration assistance information; and transmitting, from the first user equipment to the second user equipment over the sidelink interface, the sidelink DRX configuration information.