eNB Connection Establishment Using Preliminary Capability Evaluation
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Solution Overview
Problem
Current service-based redirection methods in telecommunications networks, such as from E-UTRAN to UTRAN or GERAN, result in unnecessary delays and resource wastage due to the full connection setup procedure being undertaken before determining whether the service can be provided by the network or if redirection is needed.
Innovation Solution
Implementing a simplified mechanism where the eNB determines the necessity of redirection by requesting UE capabilities before establishing a connection, using predefined identifiers in RRC Connection Request messages and employing the S1 UE capability request procedure to redirect the UE to the appropriate Radio Access Technology without establishing an unnecessary connection.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the full connection setup procedure is undertaken before determining whether redirection is needed, then the network can establish a complete connection, but unnecessary delays and resource wastage occur when redirection is required
Solution Approach 1:
The eNB performs preliminary actions by requesting and evaluating UE capabilities before completing the full connection setup procedure. This allows the network to determine redirection necessity in advance, avoiding unnecessary connection establishment delays when redirection is required
2Reliability
If the full connection setup procedure is undertaken before determining whether redirection is needed, then the connection can be established, but network resources are wasted
Solution Approach 1:
The eNB performs preliminary capability evaluation before completing connection setup, allowing early determination of redirection necessity and preventing wasteful consumption of network resources on connections that will ultimately be redirected
Solution Approach 2:
The capability request and evaluation step is extracted and performed separately before the full connection setup procedure, allowing the network to identify and exclude unnecessary connection establishment cases that would consume resources
3Productivity
If UE capabilities are requested before connection establishment, then redirection can be determined faster, but additional message exchanges are required
Solution Approach 1:
UE capability information is requested and obtained in advance during the initial connection setup phases, enabling faster redirection determination without significantly increasing overall message exchange complexity, as the capability request integrates with existing signaling procedures
Data Source
AI summary
A method of determining whether to accept a connection request from a user device requesting connection to a communications network is described. The method includes receiving a connection request from the user device, the connection request including a predefined identifier. A message requesting capability information associated with the user device is then generated and transmitted and the capability information is received in response. The method further includes determining whether to permit a connection to the user device based on the capability information and transmitting a message to release or reject or to establish the connection based on the determining. Apparatus for performing the method, including an eNodeB, gateway and user device are also described and corresponding methods of operation these components are provided.