Core Network Node Ethernet Header Compression for 5G
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Solution Overview
Problem
Current 5G networks lack header compression for Ethernet frames, leading to significant overhead in small payload transmissions, such as industrial IoT/URLLC traffic, and RoHC performance is not guaranteed during handovers, causing resource wastage and delays.
Innovation Solution
Implementing a method to compress redundant information in Ethernet/TSN stream-based transmissions by making core network nodes TSN-aware, allowing for deterministic compression ratios and efficient resource allocation through static header configuration and compression/decompression processes.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Loss of energy
If header compression is not implemented for Ethernet frames in 5G networks, then transmission overhead is significant for small payload traffic, but implementing compression increases device complexity and processing requirements
Solution Approach 1:
The patent pre-configures static header information (source MAC address, destination MAC address, VLAN ID, EtherType) before data transmission begins. This preliminary configuration allows the network to compress Ethernet headers deterministically without complex real-time analysis, reducing transmission overhead while maintaining manageable device complexity through pre-computed compression contexts
Solution Approach 2:
The patent changes the parameter state of Ethernet headers by identifying static fields that remain constant across multiple packets and compressing only the variable portions. This parameter-based differentiation allows selective compression of payload and dynamic header fields while maintaining static fields, optimizing the balance between overhead reduction and processing complexity
2Productivity
If RoHC compression is used during handovers, then compression ratio may be compromised, but not using RoHC causes resource wastage and transmission delays
Solution Approach 1:
The patent establishes TSN stream configurations and static header contexts before handovers occur. By pre-configuring compression parameters and maintaining context continuity across handovers, the system ensures deterministic compression ratios are maintained during mobility events, avoiding both resource wastage and performance degradation
Solution Approach 2:
The patent implements feedback mechanisms where the network monitors compression performance and context validity during handovers. When context loss is detected, the system can trigger context re-synchronization or reconfiguration, ensuring compression reliability is maintained without sacrificing transmission efficiency through continuous performance feedback loops
3Adaptability or versatility
If dynamic scheduling is used for data transmission, then system adapts to traffic conditions, but packet latency increases due to scheduling delays
Solution Approach 1:
The patent pre-configures TSN stream parameters, QoS policies, and header compression contexts before data transmission begins. This preliminary setup enables deterministic resource allocation and eliminates the need for dynamic scheduling decisions during packet transmission, significantly reducing packet latency while maintaining adaptability through pre-established traffic flow configurations
Solution Approach 2:
The patent creates a hybrid approach where static TSN stream configurations provide deterministic timing guarantees, while limited dynamic adjustments can be made to compression parameters based on traffic patterns. This partial dynamicity maintains adaptability to traffic conditions without introducing the full scheduling delays of conventional dynamic scheduling
Data Source
AI summary
Embodiments of the disclosure provide methods, apparatus and machine-readable media relating to transport of data flows over cellular network. One method in a core network node comprises: obtaining configuration information for a data stream in an external data network, the configuration information indicating respective values for one or more fields within a header of data packets associated with the data stream which are to remain static; initiating transmission of the configuration information to a wireless device which is to receive the data stream; receiving a data packet associated with the data stream from the external data network; removing the one or more fields from the data packet to generate a compressed data packet; and initiating transmission of the compressed data packet to the wireless device.