MPLS Header Compression for LTE Radio Bearer Transmission
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Solution Overview
Problem
MPLS networks face challenges in efficiently transmitting data over LTE radio communication networks due to their lower bandwidth capacity compared to wired networks, which affects the reliability and integrity of MPLS connectivity services, especially in remote sites.
Innovation Solution
The method involves modifying the MPLS header by reducing its size and adding a sequence number for integrity verification, and applying a ciphering mechanism to ensure secure and efficient data transfer over LTE networks, utilizing a dedicated radio bearer for transmission.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the standard MPLS header is transmitted over LTE radio network, then complete MPLS functionality is maintained, but bandwidth consumption increases due to larger header size
Solution Approach 1:
The patent extracts and removes the MPLS label field from the header when transmitting over LTE radio network, keeping only the essential fields (control field and TTL) to reduce bandwidth consumption while maintaining MPLS functionality
Solution Approach 2:
The patent changes the header structure by removing the 20-bit MPLS label parameter, transforming the standard MPLS header into a simplified version suitable for radio transmission with reduced bandwidth requirements
2Loss of energy
If the MPLS header is modified by removing the MPLS label, then bandwidth is saved, but data integrity verification becomes more difficult
Solution Approach 1:
The patent introduces sequence numbers in the control field that provide feedback mechanisms for verifying data integrity and proper ordering of transmitted packets over the radio interface
Solution Approach 2:
The control field acts as an intermediary structure that carries both control information and sequence numbers, enabling integrity verification without requiring the full original MPLS label
3Reliability
If a dedicated radio bearer is used for MPLS transmission, then transmission reliability is improved, but device complexity increases
Solution Approach 1:
The patent makes the radio bearer multi-functional by using it to carry both control plane signaling and user plane MPLS data, reducing the need for separate dedicated bearers and simplifying overall bearer management
Data Source
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AI summary
The present invention refers to a method for transmitting a Multi-Protocol Label Switching (MPLS) header from a first nodal point to a second nodal point via a mobile communication network, in particular a Long Term Evolution network, comprising the steps of modifying the Multi-Protocol Label Switching header by reducing the size of the Multi-Protocol Label Switching header and transmitting the modified Multi-Protocol Label Switching header from the first nodal point to the second nodal point by means of an air interface using a dedicated radio bearer. The invention furthermore refers to a method for establishing a Multi-Protocol Label Switching (MPLS) path and a method for performing a handover of a Multi-Protocol Label Switching (MPLS) path.