VoIP Call Handover to Circuit Switching for Network Capacity

The patent segments transceivers into two distinct categories: hopping transceivers and non-hopping transceivers. Hopping transceivers are used for circuit-switched calls where frequency diversity is beneficial, while non-hopping transceivers are dedicated for VoIP packet flows where stable, high-quality radio connection is critical. This segmentation allows each transceiver type to operate in its optimal performance mode, preventing the degradation of hardware efficiency that would occur if all transceivers were used interchangeably for VoIP.

The patent applies local quality by assigning different operational characteristics to different parts of the network infrastructure. Specifically, non-hopping transceivers provide high-quality, stable radio connections optimized for VoIP traffic, while hopping transceivers provide frequency diversity for circuit-switched calls. This localized optimization ensures that VoIP traffic always utilizes the highest quality radio resources available, maintaining hardware efficiency even as network capacity scales.

The patent implements preliminary action by pre-configuring non-hopping transceivers specifically for VoIP traffic before any degradation occurs. As VoIP penetration increases and non-hopping transceivers become fully utilized, the system proactively initiates PS-to-CS handover for new calls rather than allowing them to degrade quality on existing hopping transceivers. This preventive approach maintains hardware efficiency by ensuring VoIP traffic always occupies the highest quality radio resources.

The patent introduces dynamic resource allocation through the PS-to-CS handover mechanism. The system dynamically adjusts call routing based on real-time transceiver capacity and quality conditions. When non-hopping transceivers are fully utilized, the system dynamically switches new VoIP calls to circuit-switched connections on hopping transceivers, optimizing the use of available resources while maintaining hardware efficiency.

The patent segments the network to provide dedicated non-hopping transceivers for VoIP traffic, ensuring high bitrate and radio quality for packet-switched calls. Hopping transceivers are reserved for circuit-switched calls where frequency diversity provides sufficient quality. This segmentation allows the system to serve more users overall while maintaining high bitrate quality for VoIP traffic on the specialized non-hopping resources.

The patent creates a parallel circuit-switched network path that copies the functionality of handling voice calls but uses hopping transceivers only when necessary. This copying approach allows the system to maintain the primary high-quality VoIP path on non-hopping transceivers while providing an alternative CS path on hopping transceivers for capacity expansion, thus serving more users without compromising primary VoIP bitrate quality.