Network Control System Redirects Wireless Devices for Media Sessions
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Solution Overview
Problem
Wireless communication networks face inefficiencies in redirecting user devices to base stations that support specific media sessions, such as VoLTE, due to mismatched capabilities between base stations and network control systems.
Innovation Solution
A network control system identifies and redirects wireless communication devices from source base stations that do not support requested media sessions to target base stations that do, by sending redirect messages with session information, ensuring seamless media session establishment.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If network control systems redirect user devices based on network conditions or user service requests, then device redirection capability is improved, but integration with base station capabilities and media session requests is insufficient
Solution Approach 1:
The network control system acts as an intermediary between user devices and base stations, receiving media session requests from devices, determining base station capabilities, and coordinating redirection. This intermediary role integrates redirect capability with base station capabilities and media session requests by centralizing the decision-making process in the network control system, which has access to both device status information and base station capability information.
2Adaptability or versatility
If base stations have varying capabilities and configurations to support different wireless protocols, then network flexibility is improved, but compatibility with specific media sessions deteriorates
Solution Approach 1:
The network control system maintains information about base station capabilities and uses this feedback to make informed redirection decisions. When a media session request is received, the system queries or references stored capability information to determine which base stations can support the requested session type, ensuring reliable media session support while accommodating varying base station configurations.
Solution Approach 2:
The system changes the operational parameters of the network by redirecting devices to base stations with appropriate capabilities for the requested media session. This parameter change approach allows the network to dynamically adapt to different media session requirements while maintaining compatibility across diverse base station configurations.
3Reliability
If users cannot engage in media sessions until they move to a different base station, then media session compatibility is improved, but service continuity deteriorates
Solution Approach 1:
The network control system performs preliminary actions by proactively determining base station capabilities and identifying suitable target base stations before the user attempts to engage in a media session. When incompatibility is detected, the system initiates redirection to a compatible base station in advance, minimizing service interruption time while ensuring media session compatibility.
Data Source
AI summary
In a wireless communication network, a network control system receives a request for a media session with a wireless communication device. The control system responsively determines if the wireless device is idle and determines if a source base station serving the wireless device can support the media session. If the wireless device is idle and the source base station does not support the media session, then the control system identifies a target base station to support the media session. The control system transfers a first redirect message for delivery to the wireless device through the source base station and transfers a second redirect message for delivery to the target base station. The redirect messages have session information for the media session. The target base station receives an acceptance of the media session from the wireless device and exchanges media for the media session responsive to the acceptance.