Network ID Regional CCA Signaling for Adaptive LBT Access
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Solution Overview
Problem
Existing wireless communication systems face challenges in efficiently managing regional clear channel assessment (CCA) and listen before talk (LBT) procedures due to varying regulatory requirements across different geographical regions, particularly in the 60 GHz band, which affects spectrum sharing and channel access efficiency.
Innovation Solution
The proposed solution involves using network identification (ID) to determine the region-specific CCA and LBT procedures, enabling UEs to perform initial access and update LBT behaviors based on regional regulations, and employing DCI CCA indications for efficient channel access and spectrum sharing.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If region-specific CCA and LBT procedures are implemented to comply with varying regulatory requirements, then regulatory compliance and spectrum sharing efficiency are improved, but device complexity and signaling overhead increase
Solution Approach 1:
The patent applies local quality by implementing region-specific CCA and LBT procedures that are tailored to local regulatory requirements. Different regions (e.g., Europe, Japan, USA) have different regulatory rules for spectrum access, and the system adapts the CCA and LBT procedures according to the specific region where the device is operating, thereby achieving regulatory compliance without requiring all possible procedures to be implemented universally
Solution Approach 2:
The patent implements dynamic adaptation of CCA and LBT procedures based on the operating region. The system can switch between different LBT types (e.g., Type 1, Type 2, Type 3) and CCA methods depending on the regional regulations, making the system flexible and adaptable to varying regulatory environments without requiring fixed complex implementations for all regions
2Productivity
If multiple LBT types and CCA methods are supported for different regions, then spectrum sharing efficiency is improved, but signaling overhead and protocol complexity increase
Solution Approach 1:
The patent changes key parameters of the CCA and LBT procedures based on the operating region. Different regions have different regulatory parameters (e.g., sensing duration, transmission opportunity periods, backoff mechanisms), and the system adjusts these parameters to optimize spectrum sharing efficiency for each region while maintaining manageable signaling overhead through parameterization rather than procedural complexity
3Productivity
If dynamic LBT procedure updates are implemented based on DCI CCA indications, then channel access efficiency is improved, but processing time and system latency increase
Solution Approach 1:
The patent implements preliminary configuration of LBT procedures through DCI (Downlink Control Information) CCA indications, where the network pre-indicates the required LBT type and parameters before the actual channel access is needed. This allows the UE to prepare the appropriate LBT procedure in advance, reducing the time required during actual channel access while maintaining efficient dynamic adaptation based on network conditions
Data Source
AI summary
Techniques discussed herein can facilitate listen before talk procedures for clear channel assessment (CCA) signaling. One example aspect is a baseband processor of a user equipment (UE), including one or more processors configured to receive a network identifier (ID); and determine, based on the network ID, a region for CCA procedures where the region is one of a first region or a second region. Subsequently, the one or more processors perform an initial LBT procedure based on the determined region; and generate an uplink (UL) message after performing the initial LBT procedure.