Method for achieving group calling business

Abstract

The invention discloses a method for achieving a group calling business. The method is achieved based on a broadband digital trunking communication system which is achieved on the basis of a time division-long term evolution (TD-LTE) technology. As a TD-LTE system uses a full internet protocol (IP)-based and flattened network framework, a base station communicates with a core network directly, accordingly, the time delay of a control plane and a user plane is small, and calling setting time is shortened; and as the TD-LTE technology uses an advanced air interface technology, so that the transmission delay of a wireless network is reduced greatly; in addition, during the setting process of group callings, a signaling message parallel processing mode is used, that is resources are allocated to a calling terminal and a called terminal in parallel, a radio bearer, an S1 bearer and the like are built, and accordingly, the calling setting time is further shortened; and as the TD-LTE system is achieved in a packet domain, smooth backward evolution is facilitated.

Description

technical field [0001] The invention relates to mobile communication technology, in particular to a method for realizing a group call service. Background technique [0002] The trunking communication system is a dedicated wireless communication system for industry applications developed to meet the needs of industry command and dispatch. Similar to the public mobile communication system, the trunking communication system has also experienced the development process from the first generation analog trunking communication system to the second generation narrowband digital trunking communication system. [0003] The narrowband digital trunking communication system is currently the most widely used trunking communication system, which represents the Terrestrial Trunked Radio (TETRA, Terrestrial Trunked Radio) system defined by the European Telecommunications Standards Institute (ETSI, European Telecommunications Standards Institute) and the comprehensive digital trunking system ...

AI Technical Summary

Problems solved by technology

Since the existing group call services are basically implemented in the narrowband digital trunking communication system based on the second generation mobile communication system (2G, 2nd Generation) or the third generation mobile communication system (3G, 3rd Generation), as mentioned above For the GT800 system based on GSM technology and the GoTa system based on CDMA technology, the base station needs to be uniformly controlled by the base station controller, and cannot directly communicate with the core network, which leads to a large delay in the control plane and user plane, and increases the call establishment time. ; In addition, the existing group call services are generally implemented in the circuit domain, and it is difficult to achieve a smooth backward evolution of the system

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