LTE eNodeB Identity Number Acquisition via Segmented Message Extraction
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Solution Overview
Problem
In the LTE system, the eNodeB lacks the capability to obtain and manage identity numbers of user equipment, which is necessary for providing services and troubleshooting, as it cannot uniquely identify user equipment using the S-TMSI, which can change by page zone or region.
Innovation Solution
The eNodeB obtains the identity number of a user equipment by receiving the first part from the user equipment through an RRC connection setup request message and the second part from the MME through an initial context setup request message, combining these parts to form the complete identity number, such as the MSIN, allowing it to uniquely identify and manage user equipment.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If the eNodeB uses S-TMSI to identify user equipment, then the identification process is simple, but the eNodeB cannot uniquely identify user equipment because S-TMSI changes by page zone or region
Solution Approach 1:
The identity number is divided into two parts: the first part is obtained from the user equipment through RRC connection setup request message, and the second part is obtained from the MME through initial context setup request message. This segmentation allows the eNodeB to collect identification information from multiple sources to form a complete, unique identifier.
Solution Approach 2:
The patent introduces an intermediary mechanism where the eNodeB acts as a mediator between the user equipment and the MME to collect and combine identity information. The eNodeB receives the first part of the identity number from the user equipment and the second part from the MME, then combines them to form the complete identity number.
2Reliability
If the eNodeB obtains complete identity number through multiple messages, then the eNodeB can uniquely identify user equipment, but the message exchange process becomes more complex
Solution Approach 1:
The eNodeB performs preliminary actions by preparing to receive and process identity information from multiple sources. The system is pre-configured to extract the first part of the identity number from RRC connection setup request messages and the second part from initial context setup request messages, then combine them in advance to form the complete identity number before it is needed for user equipment identification.
3Adaptability or versatility
If the eNodeB stores and manages messages for each user equipment, then the eNodeB can provide services and troubleshoot problems, but the eNodeB requires identity numbers that it cannot obtain in the LTE system
Solution Approach 1:
The eNodeB is enhanced with multi-functionality to perform identity number acquisition in addition to its existing functions. The eNodeB can now obtain the first part of the identity number from user equipment through RRC connection setup and the second part from the MME through initial context setup, making it a universal node that can both identify and manage user equipment messages in the LTE system.
Data Source
AI summary
System and method for obtaining identity number of user equipment in an LTE system. An identity number of a user equipment may be obtained at an eNodeB in an LTE network having an MME. In order to obtain the identity number, the eNodeB may receive a first message from the user equipment and extract a first part of an identity number of the user equipment from the received first message. The eNodeB may receive a second message from the MME and extract a second part of the identity number of the user equipment from the second message. The eNodeB may form the identity number of user equipment by combining the extracted first part of the identity number with the extracted second part of the identity number.