Unified MAC Layer for Wireless Air Interface Multiplexing
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Solution Overview
Problem
Wireless communication systems face challenges in managing diverse communication protocols, waveforms, and channel access modes due to differences in service requirements and environmental conditions, leading to unpredictable interference, access issues, and increased power consumption across networks.
Innovation Solution
A unified media access control (MAC) layer is introduced to dynamically control multiple physical communication entities, enabling flexible allocation of time-frequency resources and segmenting air interfaces into asynchronous and synchronous regions for efficient multiplexing and resource management.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If different control mechanisms and system designs are deployed for variety of networks with different frequencies, environments, or service requirements, then each network can be optimized for its specific requirements, but system complexity and integration difficulty increase substantially
Solution Approach 1:
The patent implements a universal air interface design that can accommodate multiple channel access modes (scheduled, autonomous, hybrid) and different physical communication entities within a single network framework. This allows the system to maintain optimized performance for different service requirements while avoiding the complexity of multiple separate system designs through a unified, multi-functional architecture
2Productivity
If multiple physical communication entities with different waveforms and channel access modes are multiplexed over a single air interface, then resource utilization and flexibility improve, but interference management and control complexity increase
Solution Approach 1:
The patent segments the air interface into distinct regions (synchronous and asynchronous) and assigns different channel access modes to different physical communication entities within these regions. This segmentation allows efficient resource utilization by matching access modes to service requirements while simplifying interference management through spatial and functional separation of different transmission types
Solution Approach 2:
The patent introduces a unified media access control (MAC) layer as an intermediary that manages and coordinates multiple physical communication entities with different waveforms and channel access modes. This MAC layer acts as a mediator that handles the complexity of multiplexing diverse transmission types while presenting a simplified interface for resource management and interference coordination
3Adaptability or versatility
If diverse communication protocols are supported simultaneously, then service coverage and adaptability improve, but power consumption and access reliability decrease due to unpredictable interference
Solution Approach 1:
The patent applies different channel access modes and transmission parameters to different spatial and functional regions of the air interface based on local service requirements. By assigning scheduled access modes to services requiring high reliability and autonomous modes to services with more flexible requirements, the system achieves broad service coverage while maintaining high access reliability in critical regions through localized optimization
Data Source
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AI summary
Various aspects of the present disclosure provide for methods, apparatus, and computer software for enabling a single media access control (MAC) layer to control a variety of physical (PHY) layers or entities for multiplexing signals corresponding to each of the PHY layers over an air interface. Here, the MAC layer may include a resource manager configured to determine a time-frequency resource allocation within the air interface for communication with one or more subordinate entities utilizing each of the PHY layers. In this way, The MAC entity may provide dynamic control over the allocation of time-frequency resources within a given resource group, which may include transmission time intervals (TTIs) having multiple time scales.