EMM Transport Message Partial Ciphering for CIoT EPS Overhead Reduction
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Solution Overview
Problem
Existing 3GPP wireless communication systems face challenges in optimizing the transmission of Evolved Packet System (EPS) Mobility Management (EMM) transport messages, particularly in scenarios involving Cellular Internet of Things (CIoT) with control plane EPS optimization, where overhead reduction and secure data transmission are critical.
Innovation Solution
A method and system for generating and transmitting EMM transport messages with integrity protection, including partial ciphering, using a UE's locally stored NAS count in a ciphering algorithm, and optimizing the key stream length for efficient data transmission.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If EMM transport messages are transmitted with integrity protection and partial ciphering in CIoT EPS optimization scenarios, then security and integrity are improved, but message processing complexity and overhead increase
Solution Approach 1:
The patent applies segmentation by dividing the EMM transport message into distinct components: integrity protected parts and partially ciphered parts. The message is segmented such that the NAS container is integrity protected while the data container is partially ciphered, allowing selective security application that reduces overall processing complexity while maintaining necessary security protections.
Solution Approach 2:
The patent implements local quality by applying different security treatments to different parts of the message. The integrity protection is applied locally to the NAS container, while partial ciphering is applied locally to the data container. This localized approach allows each component to receive the appropriate security level without unnecessary processing overhead on the entire message.
2Productivity
If control plane EPS optimization with overhead reduction is implemented, then transmission efficiency is improved, but security protection requirements must be maintained
Solution Approach 1:
The patent applies partial action by implementing partial ciphering rather than full ciphering of the entire message. Only the data container is ciphered, while the NAS container remains in plain text but with integrity protection. This partial security approach reduces processing overhead and improves transmission efficiency while maintaining sufficient security protection for the critical data portions.
Solution Approach 2:
The patent extracts the security protection mechanism from the entire message and applies it selectively to specific components. The integrity protection is extracted and applied to the NAS container, while partial ciphering is extracted and applied to the data container. This extraction allows optimization of transmission efficiency by protecting only the essential security-critical portions.
3Speed
If key stream length is optimized for efficient data transmission, then transmission speed is improved, but security strength may be compromised
Solution Approach 1:
The patent applies parameter changes by optimizing the key stream length parameter in the ciphering algorithm. The key stream length is adjusted to match the actual data container size, ensuring that the ciphering operation processes data efficiently without unnecessary computational overhead. This parameter optimization improves transmission speed while maintaining adequate security strength for the protected data portions.
Data Source
AI summary
According to one embodiment of this specification, there is provided an operation method of user equipment (UE). The method may comprise: generating an Evolved Packet System (EPS) Mobility Management (EMM) transport message for an initial non-access stratum (NAS) message; and transmitting the EMM transport message with an integrity protected. If the EMM transport message may include a data container, the EMM transport message may be partially ciphered. The EMM transport message may be transmitted if the UE uses an Evolved Packet System (EPS) service with control plane Cellular Internet of Things (CIoT) EPS optimization with overhead reduction.