Time division-long term evolution (TD-LTE) digital trunked communication system and group service implementing method

Abstract

The invention provides a time division-long term evolution (TD-LTE) digital trunked communication system and a group service implementing method. The method comprises the steps that an initial terminal sends group set-up requests to a core network; the core network searches a monitoring side cell in a list of a pre-set tracking area according to the group set-up requests, wherein a corresponding monitoring terminal is located in the monitoring side cell; the core network sets initial resources for the initial terminal and sets group resources for an initial side cell where the initial terminal is located and the monitoring side cell; and when the core network receives that group resources responded by a monitoring side base station in the monitoring side cell successfully set up responses, a speaking right is granted to the initial terminal. According to the TD-LTE digital trunked communication system and the group service implementing method, a set-up process of the initial resources and a set-up process of the group resources are executed in a parallel mode, and therefore set-up speed of group services is largely improved, and set-up time delay is reduced.

Description

technical field [0001] The invention relates to a TD-LTE (Time Division-Long Term Evolution, Time Division-Long Term Evolution) digital trunking communication system and a group service realization method, belonging to the technical field of trunking communication. Background technique [0002] The TD-LTE digital trunking communication system is a private network system based on TD-LTE technology. It is similar to the traditional digital trunking communication system not implemented by TD-LTE technology. requirements. [0003] However, the air interface standard of TD-LTE on the existing public network is mainly aimed at the point-to-point unicast communication mechanism and the multicast communication mechanism of Multimedia Broadcast Multicast Service (MBMS), while the private network is aimed at For the point-to-multipoint half-duplex communication mechanism of group users, if the existing TD-LTE technical standard applied to the public network is simply applied to the p...

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Problems solved by technology

[0003] However, the air interface standard of TD-LTE on the existing public network is mainly aimed at the point-to-point unicast communication mechanism and the multicast communication mechanism of Multimedia Broadcast Multicast Service (MBMS), while the private network is aimed at For the point-to-multipoint half-duplex communication mechanism of group users, if the existing TD-LTE technical standard applied to the public network is simply applied to the private network system, it is difficult to meet the above-mentioned establishment time delay and other index requirements

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