RRC Connection Setup via Pre-allocated Air Interface Resources
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Current radio resource connection setup procedures in communications systems are delayed and involve excessive signaling, particularly during handovers between cells.
Innovation Solution
User equipment (UE) initiates an RRC connection request to a first base station, receives air interface resources for an access cell identified by the base station, and feeds back a connection setup acknowledgement message, allowing for direct RRC connection setup in the access cell without re-initiating the process, thereby reducing delay and signaling.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the UE re-initiates radio resource connection setup in the access cell during handover, then the connection can be established, but the delay and signaling overhead increase
Solution Approach 1:
The patent applies preliminary action by having the source base station pre-allocate air interface resources for the target access cell before the UE actually needs to connect. The target cell ID and air interface resources are included in the RRC connection setup message sent from the source base station, allowing the UE to directly use these pre-prepared resources without initiating a new connection setup procedure in the target cell, thereby reducing handover delay while ensuring reliable connection establishment
2Reliability
If the UE re-initiates radio resource connection setup in the access cell during handover, then the connection can be established, but the signaling overhead increases
Solution Approach 1:
The patent merges the connection setup signaling with the handover command signaling. Instead of sending separate RRC connection setup and connection complete messages between the UE and target base station, the source base station includes the target cell ID and air interface resources in a single RRC connection setup message. This consolidation eliminates redundant signaling exchanges and reduces overall signaling overhead while maintaining reliable connection establishment
Data Source
Figure 1~2
Figure 3
Figure 4~5
AI summary
Embodiments of the present invention disclose a radio resource connection setup method, user equipment, and a base station. The method may include: initiating, by UE, a connection setup request message to a first base station to which a camped cell currently being camped on belongs; receiving, by the UE, a connection setup message that carries an air interface resource of an access cell, where the access cell is a camped cell that is not of the UE and that is identified by the first base station; and feeding back, by the UE in the access cell, a connection setup acknowledgement message to a base station to which the access cell belongs. In the embodiments of the present invention, a delay and signaling in a radio resource connection setup procedure can be reduced.