Core Network IP Exchange for Direct Call Data Links
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Solution Overview
Problem
Establishing a dedicated bearer to transmit call content in core network devices increases network load and reduces efficiency of network resources.
Innovation Solution
A direct connection call method that exchanges IP addresses of terminals through a core network device to establish a direct connection data link using a default bearer for session initiation protocol signaling, reducing the need for dedicated bearers.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a dedicated bearer is established to transmit call content through the core network, then call content can be transmitted reliably, but network load on the core network device increases and network resource efficiency decreases
Solution Approach 1:
The patent extracts the call content transmission function from the core network's dedicated bearer and relocates it to a direct peer-to-peer data connection between terminals. The core network only retains signaling functions while terminal devices handle actual media transmission, thereby reducing core network load while maintaining transmission reliability through direct connections.
Solution Approach 2:
The patent introduces a direct data connection as an intermediary channel between terminals for call content transmission, bypassing the core network's dedicated bearer. This intermediary transmission path reduces the burden on core network devices while ensuring reliable delivery through direct terminal-to-terminal communication.
2Reliability
If a dedicated bearer is established to transmit call content, then call quality can be ensured, but network resource utilization deteriorates
Solution Approach 1:
The patent extracts call content transmission from the core network's dedicated bearer infrastructure and assigns it to direct terminal-to-terminal data connections. This extraction ensures call quality through dedicated direct paths while freeing up core network resources for other uses, thereby improving overall network resource utilization.
Solution Approach 2:
The patent segments the call transmission function into two parts: signaling (handled by core network) and media content (handled by direct terminal connections). This segmentation allows call quality to be maintained through direct dedicated paths while network resources are optimized by not allocating core network bearers for media transmission.
3Extent of automation
If the core network establishes dedicated bearers for all call content transmission, then call management is centralized and controlled, but network device complexity and processing burden increase
Solution Approach 1:
The patent extracts the media transmission function from core network management, leaving only signaling and connection establishment under centralized control. This extraction reduces core network device complexity by removing the burden of managing dedicated bearers for all call content while maintaining automated call management through SIP signaling.
Solution Approach 2:
Instead of the core network establishing and managing dedicated bearers for all call content, the patent inverts the approach by allowing terminals to establish direct data connections autonomously. The core network only manages signaling, thereby reducing device complexity while maintaining centralized call control through the SIP protocol.
Data Source
AI summary
A direct connection call method includes: receiving an IP address of a first terminal by a core network device; transmitting the IP address of the first terminal to a second terminal by the core network device; receiving an IP address of the second terminal by the core network device; and transmitting the IP address of the second terminal to the first terminal by the core network device; wherein the core network device is configured to exchange the IP addresses of the first terminal and the second terminal for establishing a direct connection data link between the first terminal and the second terminal to transmit call voice data packets. A core network device and a non-transitory storage medium are also provided.