Service release method for multimedia broadcast/multicast service

Abstract

The invention discloses a service release method for multimedia broadcast / multicast services, the method comprising: a user equipment UE requests a stream media server to release a currently established service; the stream media server sends a radio network controller RNC where the UE is located Sending the notification that the UE requests to release the broadcast / multicast service; the notification of releasing the broadcast / multicast service carries the UE identifier of the UE requesting the release of the service; the RNC configures the UE requesting the release of the service as a dedicated After the channel status, return a broadcast / multicast service release response to the streaming media server; after receiving the broadcast / multicast service release response from the RNC, the streaming media server returns a service release response to the UE through the configured dedicated channel. According to the method disclosed in the present invention, when the UE requests service release, it can reliably receive the release response from the streaming media server, and the RNC can release the air interface resource for transmitting the service data.

Description

technical field [0001] The present invention relates to multimedia broadcasting / multicasting technology, in particular to a service releasing method of multimedia broadcasting / multicasting service. Background technique [0002] At present, a network structure for implementing broadcast / multicast services is as follows: figure 1 As shown, including: user equipment (UE), base station (NodeB) and radio network controller (RNC), serving general packet radio service support node (SGSN), gateway general packet radio service support node (GGSN), portal (Portal) ,flow media services. The streaming server may be a packet switching streaming server (PSS Server). [0003] based on figure 1 In the shown network structure for implementing broadcast / multicast services, figure 2 Shown is the flow chart of service establishment and service release of broadcast / multicast service, including the following steps: [0004] Step 201: UE browses the Portal, selects the broadcast / multicast se...

AI Technical Summary

Problems solved by technology

[0022] 1) When the UE is receiving service data, it is in the receiving state of downlink multicast data. When transmitting the response message from the streaming media server to the UE in this state, if there are other UEs that continue to receive the service data, they will The impact of service data transmitted to other UEs may cause service data packet loss

[0023] 2) Since the response message is transmitted through the broadcast / multicast channel, it cannot be guaranteed that the response message will be reliably transmitted to the UE. If the UE cannot normally receive the response message from the streaming media server, the service release process cannot be completed normally, which may lead to repeated Infinite loop requesting release of business

Especially when the transmission channel used to transmit service data is the FACH channel, since the FACH channel has no power control, it cannot guarantee that the response message from the streaming media server will be sent to the UE reliably

[0024] 3) At the same time, the RNC does not receive any notification when the UE ends receiving a certain service, so after a certain cell starts to multicast the specific service data, when all the UEs in the cell no longer receive the service, the RNC also The multicast channel for transmitting the service data in the cell will not be released, which will greatly waste the air interface resources of the cell

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