DRX Configuration Manager for Sidelink UE Coordination
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Solution Overview
Problem
As the number of sidelink connections increases, negotiating a discontinuous reception (DRX) mode becomes difficult, leading to increased power consumption and interference due to conflicts between DRX configurations of different UEs.
Innovation Solution
A UE serves as a DRX configuration manager to perform scheduling and coordination of DRX configurations for other UEs within a particular region, reducing the number of messages needed to negotiate DRX configurations and avoiding conflicts such as overlapping RX-on intervals.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If each UE negotiates DRX configuration independently with multiple UEs, then communication flexibility is maintained, but negotiation complexity and power consumption increase significantly
Solution Approach 1:
The patent introduces a DRX configuration manager as an intermediary entity that centralizes the DRX configuration negotiation process. Instead of each UE independently negotiating with multiple other UEs, all DRX configuration negotiations are funneled through this manager, which receives requests, determines configurations, and communicates decisions to relevant UEs. This mediator approach maintains communication flexibility while dramatically reducing negotiation complexity for individual UEs.
2Reliability
If DRX configuration negotiation is performed between all pairs of UEs, then individual UE requirements are met, but the number of messages and interference increase
Solution Approach 1:
The patent merges multiple individual DRX configuration negotiations into a single centralized negotiation process. Instead of having separate message exchanges between each pair of UEs, the DRX configuration manager consolidates all negotiation requests and communicates configurations in a unified manner. This combining approach reduces the total number of messages while still satisfying individual UE requirements through the manager's coordinated decision-making.
3Use of energy by moving object
If multiple UEs operate with independent DRX configurations, then each UE optimizes its own power consumption, but conflicts and interference occur between overlapping RX-on intervals
Solution Approach 1:
The patent implements a feedback mechanism where the DRX configuration manager receives DRX configuration requests from UEs, determines appropriate configurations considering all relevant UEs, and communicates these configurations back to the requesting UEs. This feedback loop ensures that each UE's DRX configuration is optimized for power consumption while simultaneously avoiding conflicts with other UEs, as the manager has visibility into all active UEs and can coordinate their RX-on intervals to prevent overlaps and interference.
Data Source
AI summary
A first user equipment (UE) for wireless communication includes a transmitter configured to transmit, to a second UE, a request associated with a sidelink discontinuous reception (DRX) configuration of the first UE for sidelink communication between the first UE and one or more UEs that are distinct from the first UE. The first UE further includes a receiver configured to receive, from the second UE based on the request, a message indicating one or more parameters associated with the sidelink DRX configuration. The transmitter is further configured to transmit, to the second UE based on the message, a response indicating one of acceptance of or rejection of at least one parameter of the one or more parameters.