A method for realizing real-time transmission of broadband multimedia trunking services within a group

Abstract

The invention provides a method for implementing real-time transmission of an intra-group broadband multimedia cluster service. The method comprises the following steps: a service transmitting user terminal transmits a broadband multimedia cluster service request to a multimedia cluster scheduling subsystem; the multimedia cluster scheduling subsystem authenticates the service transmitting user terminal according to the broadband multimedia cluster service request and notifies a network subsystem to initiate a broadband multimedia cluster service setup process after the authentication is passed; the network subsystem initiates an internet protocol-controller area network (IP-CAN) session modification process according to the notification, executes a cluster bearer setup process at the network subsystem side, and indicates a broadband radio access subsystem to allocate uplink radio resources to the service transmitting user terminal and allocate downlink sharing radio resources to a service receiving user terminal in parallel to complete the cluster bearer setup process; the network subsystem confirms to the multimedia cluster scheduling subsystem that the broadband multimedia cluster service is completely set up, and the multimedia cluster scheduling subsystem confirms to the service transmitting user terminal that the broadband multimedia cluster service is completely set up. The method is adapted to a broadband digital cluster communication system.

Description

technical field [0001] The invention relates to the field of communication technology, in particular to a method for real-time transmission of intra-group broadband multimedia trunking services in a broadband digital trunking communication system based on Time Division Long Term Evolution (TD-LTE, TimeDivisionDuplex-LongTermEvolution) technology. Background technique [0002] Due to its unique characteristics of command, dispatch and quick call, the trunking communication system is widely used in public safety, transportation, emergency communication, and enterprise production with high requirements for command and dispatch. At present, the most widely used trunking communication system in the world and domestically is the narrowband digital trunking communication system based on the second-generation mobile communication technology. Terrestrial Trunked Radio (TETRA) system based on TimeDivisionMultipleAccess (TDMA) technology, MOTOROLA's integrated digital enhanced network ...

AI Technical Summary

Problems solved by technology

[0004] Due to the limitation of bandwidth and data transmission rate, the existing narrowband digital trunking communication system provides trunking dispatching services limited to group voice calls and some supplementary low-speed data services, and cannot perform real-time broadband multimedia trunking services. send

[0005] A method for real-time transmission of broadband multimedia trunking services in a group suitable for broadband digital trunking communication systems has not been proposed yet

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