Radio Network Controller Call Completion Ratio Improvement
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
The existing methods for improving call completion ratios in radio network controllers are hindered by the inability to accurately determine the UE's configuration status during air interface quality deterioration, leading to reduced service call completion ratios and network resource inefficiencies.
Innovation Solution
A method where the RNC sends a radio bearer establishment message and, if no response is received within a predetermined period, triggers the UE to report a cell update message by sending a radio link deactivation or deletion message, allowing the RNC to determine the UE's configuration status and perform call reestablishment accordingly.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If the RNC waits for the UE response during radio bearer establishment, then the configuration status can be confirmed, but the call establishment time increases and call completion ratio decreases when air interface quality deteriorates
Solution Approach 1:
The RNC proactively triggers the UE to report cell update information before the radio bearer establishment is fully completed, by deactivating or deleting the radio link. This preliminary action allows the RNC to obtain the UE's configuration status earlier, without waiting for the normal response timeline, thus resolving the contradiction between accurate status determination and call establishment time.
2Reliability
If the RNC executes call reestablishment flow, then calls can be retrieved through radio link reestablishment, but the configuration synchronization between RNC and UE cannot be ensured due to air interface quality complexity
Solution Approach 1:
The invention introduces a feedback mechanism where the UE is triggered to report its configuration status through cell update information. The RNC uses this feedback to accurately determine the UE's configuration status before executing call reestablishment, ensuring that both sides maintain configuration synchronization. This resolves the contradiction by providing reliable configuration status information that enables accurate reestablishment decisions.
3Reliability
If the UE does not report cell update in time during service establishment, then call drop occurs reducing call completion ratio, but frequent cell update reporting increases network signaling overhead
Solution Approach 1:
The RNC performs preliminary anti-action by proactively deactivating or deleting the radio link to trigger the UE to report cell update information. This prevents the scenario where the UE fails to report in time, ensuring the RNC has accurate configuration status before reestablishment. The targeted triggering approach minimizes unnecessary signaling while ensuring critical status information is obtained.
Data Source
Figure 1
Figure 2~3
Figure 4
AI summary
The present invention provides an implementation method for improving a service call completion ratio and a radio network controller, wherein the method comprises: a radio network controller sending a radio bearer establishment message to a user equipment (302); the radio network controller judging whether a radio bearer response message from the user equipment is not received within a first predetermined period, and if YES, the radio network controller triggering the user equipment to report a cell update message (304); the radio network controller receiving the cell update message from the user equipment and determining a configuration status of the user equipment according to information carried in the cell update message and/or time when receiving the cell update message (306); and the radio network controller performing call reestablishment processing according to the configuration status of the user equipment (308). According to technical solutions provided in the present invention, the call completion ratio of the network can be improved.