Wireless Paging Cause Encryption for Private Service Identification
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Solution Overview
Problem
Existing wireless communication methods expose the paging cause of services to unauthorized UEs, compromising privacy and security by allowing intruders to identify the type of service intended for authorized UEs.
Innovation Solution
The wireless network device modifies and encrypts the paging cause values, ensuring only authorized UEs can decipher them using decryption keys, thereby maintaining privacy and enhancing security.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If the paging cause is included in the paging message, then the UE can identify the type of service pending to receive, but intruder UEs can also identify the service type, compromising privacy and security
Solution Approach 1:
The patent extracts the paging cause information from the public paging message and places it into a dedicated RRC message exchanged only between the network device and the authorized UE. This separation allows the service type identification function to be maintained while preventing exposure to intruder UEs that cannot access the dedicated RRC signaling.
Solution Approach 2:
The patent introduces an intermediary RRC signaling mechanism that acts as a secure channel between the network device and the authorized UE. This intermediary layer transports the paging cause information in a protected manner, allowing the UE to identify services while preventing unauthorized UEs from accessing the information.
2Productivity
If the paging cause is broadcast to all UEs, then the network can efficiently notify all UEs of pending services, but security is compromised as intruders can access service information
Solution Approach 1:
The patent segments the notification mechanism into two parts: a public paging message that notifies all UEs of potential services, and a dedicated RRC message that provides specific service type information only to the authorized UE. This segmentation maintains notification efficiency while improving security by separating public and private information channels.
Solution Approach 2:
The patent applies local quality by providing different levels of information to different UEs. Authorized UEs receive full service type identification information through dedicated RRC signaling, while intruder UEs only receive generic paging notifications. This localized information distribution maintains efficiency for authorized users while protecting security.
Data Source
AI summary
Embodiments herein provide a method and a wireless network device (100) for handing a paging cause of a service. The method includes receiving, by the wireless network device (100), a NAS message includes the paging cause of the service provided by the wireless network device (100) and a first value corresponding to the paging cause from a UE (200). The method includes modifying, by the wireless network device (100), the first value of the paging cause of the service to a second value, and sending a NAS response message to the UE (200), where the NAS response message includes the paging cause of the service and the second value of the paging cause. The second value enables the UE (200) to respond to a paging message based on the second value of the paging cause.