System, apparatus and method for switching user service
A technology for switching systems and users, which is applied in the field of communication to improve the efficiency of use
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Embodiment 1
[0228] Figure 8 It is a schematic diagram of the implementation flow of the user switching from the packet domain to the circuit domain in the first embodiment. In this embodiment, the core network uses WCDMA R4 as an example, and the packet access network uses SAE as an example for illustration. As shown in the figure, when the user is in the MSC (comprising the MSC server and the media gateway MGW) under the control of the SAE packet network to switch when talking, may include the following steps:
[0229] Step 801, the eNodeB sends a handover / migration request to the MME.
[0230] Step 802, the MME sends a handover / relocation request to the packet access unit.
[0231] Step 803, the packet access unit sends a handover / migration request to the MSC server.
[0232] Step 804, the MSC server finds that the target area is located in the CS domain coverage area under its jurisdiction, and the MSC server sends a handover / relocation request to the BSC / RNC corresponding to the ha...
Embodiment 2
[0252] Figure 11 It is a schematic diagram of the implementation flow of the user switching from the circuit domain to the packet domain in the second embodiment. In this embodiment, the core network takes WCDMA R4 as an example. As shown in the figure, when the user is calling through the circuit domain access under the control of the MSC Handover, where the handover target area is located in the SAE packet access network, may include the following steps:
[0253] Step 1101, RNC / BSC sends a handover / relocation request to MSC, carrying target area information.
[0254] Step 1102, the MSC sends a handover / relocation request to the packet access unit according to the packet access unit corresponding to the target area information.
[0255] Step 1103, the packet access unit sends to the SAE network to initiate the establishment of a packet access bearer for handover.
[0256] Step 1104, the packet access unit returns a handover / relocation request response to the MSC, carrying ...
Embodiment 3
[0265] Figure 12 It is a schematic diagram of the implementation flow of the user switching from the circuit domain to the packet domain in the third embodiment. In this embodiment, the core network takes WCDMA R4 as an example. As shown in the figure, when the user is making a call through the circuit domain access under the control of the MSC Handover, where the handover target area is located in the SAE packet access network, may include the following steps:
[0266] Step 1201, RNC / BSC sends a handover / relocation request to MSC, carrying target area information.
[0267] Step 1202, the MSC sends a handover / relocation request to the packet access unit according to the packet access unit corresponding to the target area information.
[0268] Step 1203, the packet access unit sends to the PDN GW in the SAE network to initiate establishment of a packet access bearer for carrying media for handover. Specifically, the packet access unit sends a service request to the PCRF in t...
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