Method, device and system for sending broadcast multicast data through unicast

Abstract

The embodiment of the invention discloses a method for sending broadcast multicast data through unicast. The method comprises the steps that a PGW (PDN Gateway) selects an EPS bearer for transmitting broadcast service according to a first session update request sent by a PCRF (Policy and Charging Rules Function); the PGW obtains an IP multicast service address of the broadcast service from a BMSC (Broadcast Multicast Service Centre) and binds the obtained IP multicast service address to the EPS bearer; and the PGW sends a second broadcast service transmission request to an MBMS (Multimedia Broadcast Multicast Service) gateway, so the MBMS gateway sends the broadcast service, the bound EPS bearer is searched according to the IP multicast service address of the broadcast service forwarded by the MBMS gateway, and the broadcast service is transmitted through the EPS bearer. According to the technical scheme, network device resources can be utilized fully, the communication pressure of a GCS (Group Communication Service) application server device is reduced, the complexity and cost of researching and developing the GCS application server device are reduced, and the service quality demand of an application with relatively high timeliness is satisfied.

Description

technical field [0001] The present invention relates to the field of communication technology, in particular to a method, device and system for unicast sending broadcast multicast data. Background technique [0002] With the development of wireless communication technology, the multimedia broadcast and multicast service has been regarded by the communication industry as a service with very applicable scenarios. Its realization is that the intelligent terminal with video function receives broadcast digital audio and video through channels or channels, etc. content. At present, multimedia broadcast and multicast services can be supported in mobile communication networks. For example, the Long Term Evolution (LTE, Long Term Evolution) system supports multimedia video such as mobile phone TV through multimedia broadcast and multicast service (MBMS, Multimedia Broadcast Multicast Service) technology. broadcasting business. [0003] In MBMS technology, the broadcast multicast se...

AI Technical Summary

Problems solved by technology

However, the above technologies send the broadcast data to the PGW through the interface between the GCS application server and the PGW, which requires high performance of the GCS application server equipment, which increases the complexity and cost of developing the GCS application server equipment.

In addition, according to the existing technology, the unicast transmission of the broadcast service is initiated by the GCS application server, and when the UE repeatedly enters and exits the broadcast service area, a large number of application layer signaling between the UE and the GCS application server or control between the PCRF and the PCEF will be generated. Surface signaling, which makes the process of broadcasting and multicasting services from broadcasting to unicasting less efficient, resulting in delays or data loss in broadcasting services, which cannot meet applications with high real-time requirements, such as emergency rescue, business video conferencing, remote Quality of Service Requirements for Services such as Monitoring

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