Dynamic ZC Sequence Generation for Wireless UE Security
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Solution Overview
Problem
In wireless communication networks, the use of fixed UE DCIDs and ZC sequences poses a security risk due to potential unauthorized tracking, impersonation, and data access by third parties, especially in 'always-on' environments where quick state transitions are desired.
Innovation Solution
Implementing encryption techniques, such as hashing the ZC sequence using a UE DCID, timestamp, and unique key, and periodically updating the UE DCID, or using a pseudo random generator to determine sequence parameters, to ensure secure transmission and identity resolution.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If fixed UE DCIDs and ZC sequences are used for identification, then quick state transitions and efficient tracking are enabled, but security risks increase due to unauthorized tracking and impersonation
Solution Approach 1:
The patent applies dynamics by transitioning from fixed, static UE DCIDs to dynamic, time-varying sequence parameters. The ZC sequence parameters (root index, cyclic shift) are periodically updated based on time stamps and secret keys, making the identification signals dynamic rather than fixed. This resolves the contradiction by maintaining efficient state transitions through structured updates while preventing unauthorized tracking and impersonation through time-dependent parameter changes.
Solution Approach 2:
The patent implements parameter changes by modifying the ZC sequence parameters (root index, cyclic shift, length) periodically using time stamps and secret keys. Instead of using fixed identification parameters, the system changes these parameters over time according to a deterministic function known only to authorized entities. This enables security enhancement while maintaining the ability to quickly transition states through controlled parameter updates.
2Reliability
If encryption techniques and periodic updates are implemented, then security is enhanced, but system complexity increases
Solution Approach 1:
The patent applies preliminary action by pre-distributing secret keys to user equipment before they need them for secure operations. The time stamping mechanism and key distribution infrastructure are established in advance, allowing UEs to independently generate secure sequence parameters without real-time complex computations. This reduces operational complexity while maintaining high security through pre-configured cryptographic elements.
Solution Approach 2:
The system implements self-service by enabling each UE to independently generate its own secure sequence parameters using its secret key and the current time stamp. Each device autonomously computes its identification parameters without requiring continuous network intervention or complex centralized coordination. This reduces overall system complexity while maintaining security through distributed, independent cryptographic operations.
Data Source
AI summary
A method for user equipment (UE) identification in a wireless network comprising selecting, at the UE, a sequence from a stored pool of possible sequences based on a stored secret value; and transmitting the selected sequence to the wireless network.