MAC Sub-Header Structures for 5G IoT Data Processing
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Solution Overview
Problem
Next generation mobile communication systems require efficient data transport formats to achieve high data rates and low latency, while also needing to reduce power consumption and support flow-based quality of service without an interface for it, and manage power efficiently in inactive states and during paging signals.
Innovation Solution
The introduction of Media Access Control (MAC) sub-header structures and packet data unit (PDU) structures tailored for next generation mobile communication systems, which include methods for padding, dual-registered operations, and resource pool selection to optimize data processing and transmission, and support flow-based quality of service by enabling conditional or simplified QoS flow identifiers.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If traditional MAC header structures are used in next generation mobile communication systems, then compatibility with existing systems is maintained, but data processing efficiency and transmission performance are insufficient for high data rate and low latency requirements
Solution Approach 1:
The MAC header is segmented into multiple sub-headers, each serving specific functions. The first sub-header contains RLC SDU information, while the second sub-header contains MAC CE information. This segmentation allows for more efficient processing of different data types and improves overall data processing efficiency while maintaining manageable complexity through functional separation.
Solution Approach 2:
The MAC header structure is designed to be dynamic and adaptable. The presence or absence of optional fields (such as the third sub-header for padding or extension) can be determined by specific conditions and flags. This dynamic structure allows the system to optimize for different scenarios (high data rate, low latency, power saving) without requiring a completely different header format, thus improving productivity while controlling complexity.
2Speed
If advanced coding modulation and multiple access technologies are implemented to improve data transmission rate, then high data rate is achieved, but system complexity and power consumption increase
Solution Approach 1:
The patent introduces a power saving indicator field in the MAC header that allows the network to signal terminal devices about upcoming periods of low or no data transmission. Terminals can use this information to dynamically adjust their reception parameters, such as entering discontinuous reception mode or reducing processing intensity, thereby reducing power consumption while maintaining the capability to support advanced modulation and multiple access technologies when needed for high data rate transmission.
3Adaptability or versatility
If flow-based quality of service is supported without dedicated interface, then network flexibility is improved, but QoS management complexity increases
Solution Approach 1:
The MAC header structure is designed to universally support multiple QoS mechanisms through a unified framework. The same header fields and sub-headers are used whether for RLC SDU identification, MAC CE signaling, or QoS flow management. This multi-functional design allows flow-based QoS to be implemented without requiring separate dedicated interfaces or protocols, achieving adaptability while managing complexity through reuse of existing structural elements.
4Productivity
If MAC PDU structures are optimized for high data rate transmission, then transmission performance is improved, but compatibility with existing LTE systems and apparatuses may be compromised
Solution Approach 1:
The patent extracts and separates next-generation specific features into distinct sub-headers and optional fields within the MAC header structure. The core header structure maintains compatibility with existing LTE systems, while additional sub-headers (such as the third sub-header for padding or extension) can be added when needed for enhanced performance. This extraction approach allows high data rate transmission capabilities to be implemented without compromising compatibility, as legacy systems can simply ignore the additional optional fields.
Data Source
AI summary
A communication technique of fusing a fifth generation (5G) communication system for supporting higher data transmission rate beyond a fourth generation (4G) system with an Internet of things (IoT) technology and a system thereof are provided. The communication technique may be used for an intelligent service (for example, a smart home, a smart building, a smart city, a smart car or a connected car, health care, digital education, a retail business, a security and safety related service, or the like) based on the 5G communication technology and the IoT related technology. A method for defining media access control (MAC) sub-header structures suitable for a next generation mobile communication system and applying the MAC sub-header structures to provide a high data transmission rate and a low latency in the next generation mobile communication system is provided.