Base Station Control Plane Overload Management via RRC Release
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Current mobile communication systems face challenges in managing control plane overload, particularly in next-generation networks that require high data traffic, increased transfer rates, and low latency, leading to resource shortages and inefficiencies.
Innovation Solution
A method for performing overload control in a wireless communication system involves a base station receiving an overload start message and sending a RRC connection release message to user equipment (UE) with a wait time for data access via the control plane, utilizing CIoT EPS optimization to manage data transmission and reduce control plane overload.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If data transmission via control plane is allowed to continue during overload conditions, then user data access is maintained, but control plane overload increases leading to network resource exhaustion
Solution Approach 1:
The base station receives an overload start message from the core network indicating overload conditions, and proactively applies control plane data transmission restrictions before the overload becomes critical. This preliminary anti-action prevents further exacerbation of the overload situation while maintaining user plane data transmission
Solution Approach 2:
The patent segments data transmission into two separate planes: control plane and user plane. During overload conditions, the control plane data transmission is restricted while user plane data transmission continues uninterrupted. This segmentation allows selective control over different types of traffic to manage network load effectively
2Reliability
If control plane data transmission is blocked to reduce overload, then control plane load is reduced, but user data access via control plane is delayed
Solution Approach 1:
The base station dynamically adjusts the treatment of control plane data transmissions based on real-time overload conditions. When overload start message is received, control plane data transmission is restricted; when overload ends, normal operation resumes. This dynamic adaptation balances overload control with timely data access
Solution Approach 2:
The base station acts as an intermediary between the core network and user equipment during overload conditions. It receives overload start/stop messages from the core network and translates these into appropriate actions on control plane data transmissions, mediating between network capacity constraints and user data access requirements
3Ease of operation
If RRC connection is maintained for control plane data transmission, then data access is enabled, but network resources are consumed during overload
Solution Approach 1:
The patent extracts control plane data transmission from the normal RRC connection operation during overload conditions. When overload start message is received, the base station sends RRC connection release messages to UEs with data pending, removing the problematic element (control plane data transmission) while maintaining the ability to restore it when overload ends
Data Source
AI summary
Disclosed are an overload control method in a wireless communication system and a device for the same. Specifically, a method by which a base station performs an overload control in a wireless communication system can include: a step of receiving an overload start message from a core network; a step of receiving a first radio resource control (RRC) message including a non-access stratum (NAS) message from user equipment (UE); and a step of transmitting an RRC connection release message, for instructing the release of an RRC connection, to the UE when an instruction for instructing data transmission through a control plane in the first RRC message is included.