Circuit switched fallback method and device

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United States of America Patent

PATENT NO 9900807
SERIAL NO

14966461

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Abstract

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The embodiments of the present application discloses a circuit switched fallback method, a UE, an MSC, and an MME. The method includes: sending, by a UE to an MME, a request message for requesting to perform CSFB; receiving, by the UE, a switch command sent by an eNodeB; releasing or holding a default CS call of the UE after the UE switches to the CS domain according to the switch command, where the default CS call is generated by the UE according to the switch command; and by using an MSC, initiating, by the UE, a CS call or receiving a CS call. According to the circuit switched fallback method, the UE, the MSC, and the MME in the embodiments of the present application, circuit switched fallback can be implement in a manner of switching by a UE from a PS domain to a CS domain, and reduce a delay.

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Patent Owner(s)

Patent OwnerAddress
HUAWEI TECHNOLOGIES CO LTDSHENZHEN

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Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Han, Yaowei Shanghai, CN 2 8
Liu, Hai Shanghai, CN 131 1210
Wang, Xinyong Shenzhen, CN 25 73
Wu, Xiaobo Shanghai, CN 159 776
Zhang, Daliang Shanghai, CN 21 27

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