Implementation method for voice call borne by LTE

Abstract

The invention discloses an implementation method for a voice call borne by an LTE. The method comprises the steps of adding a voice gateway VGW on an original communication network of an operator, andfitting UN software and signaling and interface intervention implementation modes matched with the voice gateway VGW to achieve a voice call service with a mobile phone side. The method provided by the invention implements the voice call borne by the LTE, which is ensured in quality of service, supports intercommunication of each system, does not depend on 2 / 3G, accords with the development trendrequirement, and does not need to newly build IMS, update the LTE or 5G, update the 2 / 3G and change the mobile phone; the voice call borne by the LTE can be achieved by only needing to introduce a cloud VGW (voice gateway) and install the UN software on the LTE mobile phone, the function implementation is accordant with the standard VOLTE scheme, and the investment is reduced by 80%.

Description

technical field [0001] The invention belongs to the technical field of communication, and relates to a method for implementing voice calls carried by LTE. Background technique [0002] The implementation of the existing LTE user voice call is as follows: [0003] Dual standby: terminal side solution. The mobile phone adopts single-card dual-standby to reside in both the CS domain and the PS domain at the same time. The voice only occurs in the CS domain (2 / 3G), and the data occurs in the PS domain (LTE). Voice and data services can be concurrent. This solution does not require LTE upgrades, and there is no interoperability with 2 / 3G, but it has long relied on 2 / 3G for voice services, and the dual-standby mobile phone consumes a lot of power and has poor battery life, which does not meet the requirements of the development trend. [0004] CSFB: The mobile phone adopts single-card single-standby, and stays on LTE first. When the user needs voice services under LTE, it falls ...

AI Technical Summary

Problems solved by technology

[0007] The purpose of the present invention is to address the deficiencies in the prior art: the dual standby and CSFB scheme relies on 2 / 3G for a long time, and cannot solve the problem of voice calls after 2 / 3G withdraws from the network; The identified caller and caller intercommunication cannot support call supplementary control services, cannot guarantee service QoS, policy and charging control (PCC) is not compatible with operators, and is not a commercial standard voice service; (standard) VOLTE conforms to technological development trends However, the network structure is complex (approximately 21 new network elements and 38 interfaces are added), the call process is complicated (the connection steps increase from approximately 20 to approximately 100 or more), and the cost of transformation and upgrading is high, and the investment is difficult to recover; A method for implementing voice calls carried by LTE with reasonable network architecture, low investment, stable and reliable

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