Satellite cluster real-time voice group call control method

Abstract

The invention proposes a satellite cluster real-time voice group call control method. When group calls are made on the TDMA channel from the existing geostationary satellite to the ground mobile terminal, the core network of the gateway station still performs signaling interaction with the conventional business single call process, and the interface and signaling process of the original conventional gateway station controller No change, the voice single-call access function is maintained; a trunking gateway station controller is added, and the trunking gateway station controller is connected to the core network of the gateway station through the interface connecting the original conventional gateway station and the core network, and the trunking gateway station Through signaling adaptation, the trunking group caller and the called mobile terminal group can quickly enter the group call service channel; both the mobile terminal and the trunking gateway station supplement the trunking protocol stack function, so as to realize the control of the trunking real-time voice communication.

Description

technical field [0001] The invention belongs to the technical field of satellite communication, and in particular relates to a trunking group call control method under the condition of geostationary orbit satellite long-time-delay TDMA channel, especially under the precondition that the satellite system supports point-to-point single-call duplex voice calls, through supplementary trunking Signaling broadcast channel and compatible single call signaling process, obtain point-to-multipoint satellite cluster real-time voice half-duplex group call service, and ensure the simultaneous coexistence of single call and group call cluster control method. Background technique [0002] The satellite mobile communication system refers to a system that uses the relay forwarding or switching function of the earth orbit satellite to connect the mobile terminal (station) in its coverage area to the core network of the ground gateway station (system) for business exchange to realize mobile com...

AI Technical Summary

Problems solved by technology

In this way, a trunk group call will overuse the air interface resources, the call connection time will be infinitely extended, and it is difficult to complete the group call

[0026] 2) figure 2 In Steps 18, 27 and 29, the called party needs to answer, but under the trunking group call condition, the called party is not one user but many users, and the called party’s answering function cannot be realized

[0027] 3) Whether it is the calling user or the called user, it is necessary to establish a connection between the user and the gateway station controller for signaling interaction, but the cluster group user cannot establish an independent connection to each user, and can only use broadcast wireless Sending signaling in connection mode

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