Sidelink DRX Alignment via DL Offset and Capability
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Solution Overview
Problem
Current mobile communication networks face challenges in efficiently managing and optimizing the communication protocols and resource allocation across diverse wireless devices and base stations, particularly in mixed technology environments.
Innovation Solution
The implementation of advanced communication protocols and mechanisms within the New Radio (NR) framework, including bandwidth adaptation, carrier aggregation, and dynamic resource allocation, to enhance the efficiency and flexibility of mobile communication networks.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Use of energy by moving object
If discontinuous reception (DRX) is implemented for power saving, then energy consumption is reduced, but reception timing alignment between gNodeBs and UEs becomes complex and error-prone
Solution Approach 1:
The patent segments the DRX configuration into separate components: a first DRX configuration for the first gNodeB and a second DRX configuration for the second gNodeB. Each configuration is independently managed and aligned, reducing the complexity of coordinating multiple DRX cycles across different base stations. The segmentation allows each UE to manage individual DRX timing with its serving gNodeB without needing to coordinate all gNodeBs simultaneously.
Solution Approach 2:
The patent introduces an intermediary mechanism where the UE receives DRX configuration information from the network and uses this information to autonomously determine reception timing. The network acts as an intermediary by providing the necessary timing parameters and configuration data, allowing the UE to independently manage alignment without complex coordination protocols between multiple gNodeBs.
2Reliability
If multiple DRX cycles are coordinated across different gNodeBs, then communication reliability is improved, but the risk of misalignment and protocol errors increases
Solution Approach 1:
The patent applies local quality by configuring DRX parameters specifically for each gNodeB-UE connection rather than using a uniform configuration across all gNodeBs. Each gNodeB receives tailored DRX configuration based on its specific timing and synchronization characteristics, allowing optimal local alignment while avoiding the need for complex global coordination that could lead to misalignment errors.
Solution Approach 2:
The patent incorporates feedback mechanisms where the UE reports its reception status and timing information to the network. This feedback allows the network to adjust DRX configurations dynamically, ensuring proper alignment between multiple gNodeBs and reducing the risk of protocol errors through continuous monitoring and adaptation.
3Adaptability or versatility
If dynamic resource allocation is implemented, then network adaptability to traffic conditions is improved, but protocol management complexity increases
Solution Approach 1:
The patent implements dynamics by allowing the network to dynamically adjust DRX configurations based on current traffic conditions and network load. The DRX parameters such as on-duration, sleep time, and timing offsets can be modified in response to changing conditions, enabling the system to adapt to varying traffic patterns while maintaining manageable protocol complexity through automated adjustments.
Data Source
AI summary
A first wireless device receives one or more first messages indicating downlink (DL) discontinuous reception (DRX) parameters indicating a DL DRX on-duration start offset. The first wireless devices determines a starting time of an active time of a sidelink DRX (SL DRX) based on the DL DRX on-duration start offset and a simultaneous reception capability. The wireless device receives, from a second wireless device, one or more sidelink transport blocks during the active time.