Sidelink Communication Synchronization via LTE Uu Interface
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Solution Overview
Problem
Wireless networks face challenges in efficiently managing resources to provide bandwidth and response times due to multiple devices sharing resources, with limitations from communication protocols and hardware bandwidth, especially when operating with both new and legacy protocols.
Innovation Solution
The implementation of methods for sidelink communication and synchronization over LTE and NR Uu interfaces, where user equipment (UE) detects synchronization signals to determine reference timing and frequency for vehicle-to-everything (V2X) communication, transmitting physical sidelink control and shared channels according to NR protocols, and base stations manage grants and scheduling for V2X transmissions.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If multiple devices share the same wireless resources, then resource utilization is improved, but communication reliability deteriorates due to protocol limitations and hardware bandwidth constraints
Solution Approach 1:
The patent segments wireless communication into two distinct interfaces: the Uu interface for device-to-network communication and the PC5 interface for direct device-to-device sidelink communication. This segmentation allows different protocols and resource management strategies to be applied to each interface, improving overall communication reliability while maintaining resource utilization. The Uu interface handles control and coordination, while the PC5 interface enables direct data transmission, reducing protocol conflicts and hardware bandwidth constraints.
Solution Approach 2:
The network (base station) acts as an intermediary that coordinates and manages resources between devices. The base station allocates resources for both Uu and PC5 interfaces, mediates conflicts between legacy and newer protocols, and ensures that communication reliability is maintained even as multiple devices share wireless resources. This intermediary management resolves the contradiction by providing centralized control over distributed resource sharing.
2Adaptability or versatility
If devices operate with both newer protocols and legacy device protocols, then adaptability is improved, but device complexity increases
Solution Approach 1:
The patent divides protocol processing into separate domains: legacy protocols are handled primarily over the Uu interface, while newer protocols are implemented over the PC5 sidelink interface. This segmentation allows devices to support multiple protocols without requiring complex simultaneous processing of conflicting protocol requirements, as each interface can be optimized for specific protocol types.
Solution Approach 2:
The dual-interface architecture provides universal compatibility by enabling devices to function with both legacy and newer protocols through different communication paths. The Uu interface maintains compatibility with existing network infrastructure and legacy devices, while the PC5 interface enables advanced features and newer protocol implementations, allowing a single device to serve multiple protocol requirements without excessive complexity.
Data Source
AI summary
Embodiments of a User Equipment (UE), Next Generation Node-B (gNB), Evolved Node-B (eNB) and methods of communication are generally described herein. The UE may detect one or more LTE synchronization signals from an eNB over an LTE Uu interface between the UE and the eNB. The LTE synchronization signals may be detected in resources allocated for LTE communication. The LTE synchronization signals may be detected in accordance with an LTE protocol. The UE may determine, based on the LTE synchronization signals, a reference timing and a reference frequency for NR vehicle-to-everything (V2X) communication over an NR PC5 interface with another UE.