Control method, system and device for circuit field fall-back
A circuit domain fallback and control method technology, applied in the field of communications, can solve problems such as only forced circuit domain fallback, and achieve the effects of improving satisfaction, ensuring availability, and reducing invalid occupancy
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Embodiment 1
[0097] A circuit domain fallback control method is provided, which is applied to the scene where a calling UE initiates a call to a called UE in an evolved packet domain system network.
[0098] Such as Image 6 As shown, the CS domain fallback control method according to this embodiment includes: step S602, the network element in the CS domain that knows the call information of the call initiated by the calling UE to the called UE notifies the mobility management entity of the call information; S604, the mobility management entity notifies the called UE of the call information; Step S606, the called UE determines whether to perform CS fallback according to whether the user answers the call or a preset CS fallback principle.
[0099] On the one hand, when the network element is a mobile switching center / visitor location register (MSC / VLR), the MSC / VLR notifies the mobility management entity of the call information by carrying the call information in the circuit domain paging m...
Embodiment 2
[0151] In this embodiment, a CS fallback control method is provided, which is applied to a scenario where a calling UE initiates a call to a called UE in an evolved packet domain system network.
[0152] Such as Figure 13 As shown, the CS domain fallback control method according to this embodiment includes: step S1302, the network element in the CS domain that knows the call information of the call initiated by the calling UE to the called UE notifies the mobility management entity of the call information; S1304, the mobility management entity determines whether to perform CS fallback according to the preset CS fallback principle; Step S1306, the mobility management entity sends the call information and indication information whether to perform CS fallback for this call to the called UE.
[0153] On the one hand, when the network element is MSC / VLR, MSC / VLR notifies the mobility management entity of the call information by carrying the call information in the circuit domain p...
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