Method and system for group call service processing, and core network equipment

Abstract

The invention discloses a group call service processing method based on a cluster communication system. The method comprises the steps that: after establishing a group call, a core network device receives a group call downlink data packet from a data source; and the core network device sends the group call downlink data packet to a bearer network, wherein a multicast distribution tree is preset in the bearer network, and the multicast distribution tree employs the core network device as a multicast source and employs a participant base station in a multicast group as a leaf node. In the method, the core network device only needs to send a copy of data to realize the point-to-multipoint multicast transmission mode from the core network device to a group call terminal, thereby reducing the load of the core network device and the redundant flow of the bearer network, reducing the transmission delay and improving the capacity and the performance of the cluster service on the whole.

Description

technical field [0001] The invention relates to the field of communication technology, in particular to a group call service processing method and system, and core network equipment. Background technique [0002] In the current trunking communication system, high-speed data service is one of the fastest-growing trunking services, especially the high-speed data service represented by video service, and high-speed data service brings great pressure to the transmission bearer network between the trunking core network and the base station. The pressure is also increasing. [0003] In the prior art, the method of transmitting data between the cluster core network and the base station through the transmission bearer network is a unicast (point-to-point) transmission mode. Specifically, refer to figure 1 As shown, after sending a group call request to the core network, the core network will copy the data from the data source, and make a copy for each base station participating in ...

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Problems solved by technology

[0004] However, in this transmission mode, the total traffic transmitted by the bearer network is the sum of all the data traffic of the base stations participating in the group call, which makes the bearer network designed to carry a large amount of traffic, and there is a large amount of redundant traffic during use, reducing the load capacity. In addition, the core network also needs to replicate data multiple times, which increases the load on the core network and reduces the capacity and performance of cluster services

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