UE Frame Configuration for Prioritized Unlicensed Band Access
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Solution Overview
Problem
Current wireless communication systems face challenges in efficiently managing access to wireless resources, particularly in unlicensed bands, due to varying device types and traffic profiles, leading to increased complexity and difficulty in prioritizing certain UEs and services.
Innovation Solution
Implementing different Frame Format Period (FFP) configurations for UEs based on their operating modes, such as RRC states, to prioritize access for connected UEs over idle UEs by adjusting offset and frame period parameters, thereby optimizing contention-based resource access.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If different frame configurations are implemented for different operating modes, then access efficiency for connected UEs is improved, but device complexity increases
Solution Approach 1:
The patent implements dynamic frame configuration by defining multiple frame structures (first frame configuration for connected UEs, second frame configuration for idle UEs) that adapt to different operating modes. The network device dynamically selects and configures appropriate frame structures based on the UE's RRC state, enabling flexible resource allocation and access priority management without requiring hardware changes.
Solution Approach 2:
The patent changes frame structure parameters (such as frame period, subframe structure, resource allocation patterns) based on operating mode. Connected UEs are configured with frame parameters optimized for frequent access, while idle UEs use frame parameters optimized for power saving and periodic access, thereby resolving the contradiction between access efficiency and system complexity through parameter adaptation.
2Adaptability or versatility
If contention-based access is used in unlicensed bands, then spectrum utilization is improved, but access conflicts increase
Solution Approach 1:
The patent applies different frame configuration qualities to different UE groups based on their operating modes. Connected UEs receive frame configurations with higher access priority and more frequent opportunities, while idle UEs receive configurations optimized for lower priority access. This local differentiation reduces access conflicts by staggering transmission opportunities and prioritizing critical communications.
Solution Approach 2:
The network device performs preliminary configuration of frame structures and resource allocations based on predicted traffic patterns and UE states. By pre-configuring appropriate frame parameters before access conflicts occur, the system proactively manages contention in unlicensed bands, improving both spectrum utilization and access reliability through advance planning.
Data Source
AI summary
A method includes determining an operating mode of a first terminal of the one or more terminals; selecting, based on the operating mode, a first frame configuration from a plurality of frame configurations for the first terminal, each of the plurality of frame configurations configuring one or more of: an offset parameter determining the start of a frame, a Channel Occupancy Time “COT” duration in a frame, an idle duration in a frame, a frame duration, a frame period and a gap duration between two subsequent frames; and communicating between the first terminal and the base station and via the first frequency band, using contention-based access and based on the first frame configuration.