Base Station Local Routing via Public Key Forwarding

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Solution Overview

Problem

In WiMAX networks, local routing of traffic between mobile stations under the same base station requires decryption and re-encryption of packets at the base station, leading to increased processing time and power consumption.

Innovation Solution

A method that updates the encryption keys of uplink and downlink traffic flows to a public key, allowing encrypted data packets to be forwarded directly between mobile stations without decryption and re-encryption at the base station.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Productivity

If local routing is implemented under the same base station, then data transmission between mobile stations is achieved, but decryption and re-encryption operations increase processing time and power consumption

Engineering Contradiction:

Improvedata transmission efficiencyVSAvoidprocessing time

Core Design Contradiction:

ProductivityVSLoss of time

Solution Approach 1:

The patent changes the encryption key parameter from individual user-specific TEKs to a shared public key for local routing. This parameter change allows the base station to forward packets without decryption and re-encryption operations, thereby reducing processing time and improving data transmission efficiency while maintaining security through the public key mechanism.

Inventive Principle:

Principle #35Parameter changes

2Productivity

If local routing is implemented under the same base station, then data transmission between mobile stations is achieved, but decryption and re-encryption operations increase power consumption

Engineering Contradiction:

Improvedata transmission efficiencyVSAvoidpower consumption

Core Design Contradiction:

ProductivityVSUse of energy by moving object

Solution Approach 1:

Inventive Principle:

Principle #35Parameter changes

3Reliability

If individual TEKs are used for each mobile station, then security is maintained, but base station must decrypt and re-encrypt packets increasing complexity

Engineering Contradiction:

ImprovesecurityVSAvoiddata processing complexity

Core Design Contradiction:

ReliabilityVSDevice complexity

Solution Approach 1:

The patent applies universality by using a single public key for multiple mobile stations engaged in local routing. This allows the base station to forward packets between different mobile stations without performing decryption and re-encryption operations, reducing data processing complexity while maintaining security through the universal public key mechanism.

Inventive Principle:

Principle #6Universality (Multi-functionality)

Data Source

PatentUS9215221B2Method for implementing local routing of traffic, base station and system

Publication Date: 2015.12.15 HONOR DEVICE CO LTD

AI summary

Embodiments of the present invention provide a method for implementing local routing of traffic, a base station and a system are provided, which relate to the field of communications technologies. The method for implementing local routing of traffic includes: judging whether local routing processing is performed on an uplink traffic flow of a first terminal that serves as a sending end; if it is judged as yes, updating a key of the uplink traffic flow of the first terminal and/or a key of a downlink traffic flow of a second terminal that serves as a receiving end to a public key; forwarding an encrypted data packet of the uplink traffic flow of the first terminal to the second terminal through the downlink traffic flow of the second terminal, where an encryption and decryption operation is not performed on the encrypted data packet before the forwarding or during the forwarding.