UDP/IP Header Removal for LTE Real-Time Traffic

Solution Overview

Problem

In LTE wireless networks, the large User Datagram Protocol/Internet Protocol (UDP/IP) header overhead for real-time traffic packets leads to significant bandwidth consumption, and existing header compression methods like Robust Header Compression (RoHC) do not fully eliminate overhead and add processing burdens.

Innovation Solution

A method and system that modify and reconstruct UDP and IP headers for real-time data packets between User Equipment (UE) and the Packet Data Network (PDN) Gateway (PGW) to remove and reattach header portions, reducing header overhead and conserving bandwidth.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Loss of substance

If Robust Header Compression (RoHC) is used to compress header packets, then header overhead is reduced, but processing complexity and processing burden increase significantly

Engineering Contradiction:

Improveheader overheadVSAvoidprocessing complexity

Core Design Contradiction:

Loss of substanceVSDevice complexity

Solution Approach 1:

The patent extracts and removes the UDP header and IP header from the packet entirely, rather than compressing them. This is achieved by stripping these headers at the UE before transmission and reconstructing them at the PGW, thereby eliminating header overhead completely while avoiding the processing complexity of compression algorithms like RoHC.

Inventive Principle:

Principle #2Taking out (Extraction)

Solution Approach 2:

The patent introduces an intermediary approach where the PGW acts as a mediator that receives packets without headers, reconstructs the necessary header information, and forwards them to the PDN. This intermediary reconstruction mechanism enables complete header elimination while maintaining network functionality, avoiding the need for complex compression processing at UE and eNB.

Inventive Principle:

Principle #24Intermediary (Mediator)

2Loss of energy

If UDP/IP headers are completely removed to eliminate overhead, then bandwidth is conserved, but packet processing becomes more complex

Engineering Contradiction:

Improvebandwidth consumptionVSAvoidpacket processing complexity

Core Design Contradiction:

Loss of energyVSDevice complexity

Solution Approach 1:

The patent extracts and removes the UDP header and IP header from the packet entirely, rather than compressing them. This is achieved by stripping these headers at the UE before transmission and reconstructing them at the PGW, thereby eliminating header overhead completely while avoiding the processing complexity of compression algorithms like RoHC.

Inventive Principle:

Principle #2Taking out (Extraction)

Solution Approach 2:

The patent performs preliminary header removal at the UE before transmission, and preliminary header reconstruction at the PGW before forwarding to the PDN. This preliminary action approach ensures that headers are eliminated from the air interface transmission while being reconstructed only when needed, optimizing both bandwidth efficiency and processing timing.

Inventive Principle:

Principle #10Preliminary action

3Loss of substance

If header compression is implemented at UE and eNB, then header overhead is reduced, but processing burden on scarce resources increases

Engineering Contradiction:

Improveheader overheadVSAvoidprocessing efficiency

Core Design Contradiction:

Loss of substanceVSProductivity

Solution Approach 1:

The patent extracts and removes the UDP header and IP header from the packet entirely, rather than compressing them. This is achieved by stripping these headers at the UE before transmission and reconstructing them at the PGW, thereby eliminating header overhead completely while avoiding the processing complexity of compression algorithms like RoHC.

Inventive Principle:

Principle #2Taking out (Extraction)

Solution Approach 2:

The patent introduces an intermediary approach where the PGW acts as a mediator that receives packets without headers, reconstructs the necessary header information, and forwards them to the PDN. This intermediary reconstruction mechanism enables complete header elimination while maintaining network functionality, avoiding the need for complex compression processing at UE and eNB.

Inventive Principle:

Principle #24Intermediary (Mediator)

Data Source

PatentUS9237482B2Method of transmitting real time traffic with reduced header in wireless network

Publication Date: 2016.01.12 WSOU INVESTMENTS LLC

AI summary

In a mobile telecommunications network including a mobile User Equipment (UE) and a Packet Data Network (PDN) Gateway (PGW), a method is provided for controlling data packet header overhead for real time data packet traffic between the UE and the PGW. The method includes: modifying one or more data packets having an Internet Protocol (IP) header and a User Datagram Protocol (UDP) header to remove at least a portion of at least one of said IP and UDP headers prior to transporting said modified data packet between the UE and PGW; and reconstructing the removed header portions upon receipt of the modified data packet at one of the UE or PGW.