LTE Base Station Early RRC Connection Setup
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Solution Overview
Problem
Current call connection methods in LTE and SAE systems experience delays due to the sequential processing of RRC connection setup and NAS message handling, leading to inefficiencies in channel setup and mobility control, particularly in scenarios where terminal mobility occurs before RRC connection establishment.
Innovation Solution
A radio communication base station apparatus and method that performs a radio connection with a terminal before upper layer node authentication, allowing data channel assignment post-authentication, thereby reducing call connection delay by establishing RRC connections and associated channels independently of upper layer node authentication.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If RRC connection setup and NAS message handling are performed sequentially, then authentication security is ensured, but call connection delay increases
Solution Approach 1:
The base station performs RRC connection setup with the terminal before completing NAS message handling and authentication with the upper layer node. By executing the radio connection establishment in advance, the system reduces call connection delay while maintaining security through subsequent authentication procedures.
2Reliability
If channel setup is performed twice (RRC connection setup and channel setup for data transmission), then communication reliability is improved, but processing efficiency decreases
Solution Approach 1:
The patent combines RRC connection setup and channel setup for data transmission into a single integrated process. The base station establishes both the radio connection and data channels simultaneously during the initial RRC setup phase, eliminating redundant setup operations while ensuring communication reliability through proper resource allocation.
3Reliability
If terminal mobility control is performed after RRC connection establishment, then network security is maintained, but mobility response time increases
Solution Approach 1:
The base station performs mobility control operations during the RRC connection setup phase, before final authentication is complete. This allows the terminal to be quickly prepared for mobility scenarios while network security is subsequently confirmed through the authentication process with the upper layer node.
Data Source
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AI summary
Disclosed are a terminal device apparatus and a call connection method for reducing a call connection delay. According to the device and the method; in ST301, a terminal acquires an identifier managed in a base station (100); in ST302, radio resource information required for a service desired by the terminal is decided; in ST303, by using the identifier acquired in ST301, the terminal transmits a request for establishing RRC connection to the base station (100). In ST304, according to the radio resource information received from the terminal, the base station (100) decides the radio resource to be set for the terminal before authentication by an upper layer node, and the base station (100) extracts information destined to the upper layer node. In ST305, the information destined to the upper layer node is transmitted to the upper layer node. In ST306, the setting contents of the radio resource decided in ST304 are transmitted to the terminal.