Wearable UE L1 Protocol for Ultra-Dense Energy-Efficient Communication
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Solution Overview
Problem
Current communication systems for wearable user equipment (wUE) devices face challenges in ultra-dense deployments due to limitations in data rate and power consumption, particularly with technologies like Bluetooth and Wi-Fi, which struggle in dense environments and consume high power.
Innovation Solution
The proposed solution involves an interface layer-one (L1) procedure and radio frame/subframe structures for allocating physical resources between wUE and network UE (nUE) using an Xu interface, which includes a common synchronization source, dynamic configuration of DL/UL subframes, contention-based resource coordination, and power-saving features to enhance energy efficiency and scalability.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Use of energy by moving object
If Bluetooth or BLE is used for short-range wireless communication, then power consumption is reduced compared to Wi-Fi, but data rate is limited to 3 Mbit/s and performance deteriorates in ultra-dense deployments
Solution Approach 1:
The patent implements dynamic subframe configuration where the ratio of downlink to uplink subframes can be adjusted based on traffic conditions. This allows the system to adapt resource allocation dynamically, improving data transmission efficiency while managing power consumption effectively in wearable devices.
Solution Approach 2:
The patent changes key communication parameters including subframe structure (configurable DL/UL ratio), synchronization signal periodicity, and resource allocation patterns. These parameter changes enable the system to achieve higher data rates while maintaining power efficiency by optimizing resource usage according to actual communication needs.
2Productivity
If Wi-Fi is used for wireless communication, then data rate is improved, but power consumption increases significantly
Solution Approach 1:
The patent employs periodic synchronization signals and periodic resource allocation patterns that allow wearable devices to enter low-power states between active transmission periods. This periodic structure enables high data rates during communication bursts while significantly reducing power consumption during idle periods through efficient sleep mode transitions.
3Adaptability or versatility
If contention-based resource coordination is used in ultra-dense deployments, then device connectivity is improved, but collision rates increase
Solution Approach 1:
The patent segments the available time-frequency resources into distinct subframes and resource blocks, with configurable downlink and uplink portions. This segmentation allows multiple wearable devices to coordinate their resource usage more effectively, reducing collisions while maintaining connectivity in ultra-dense deployments through structured resource division.
4Measurement precision
If common synchronization source is used for wUE and nUE, then synchronization accuracy is improved, but system complexity increases
Solution Approach 1:
The patent implements a common synchronization source that serves multiple functions: providing timing reference for both downlink and uplink transmissions, enabling collision avoidance through coordinated resource allocation, and facilitating efficient random access procedures. This multi-functional synchronization approach improves accuracy without proportionally increasing system complexity.
Data Source
AI summary
This disclosure describes frame structures and layer one (L1) procedures suitable for Xu air interfaces. Features of the design are designed for energy-efficient operation and to meet other performance specifications and characteristics of ultra-dense user equipment deployments.