METHOD AND TERMINAL FOR IMPLEMENTING A VOICE SERVICE
First Claim
1. A method for implementing a voice service, comprising:
- residing, by a terminal, in a cell on a 4G network;
sending, by the terminal, a combined attachment message or a combined location update message to a mobility management entity (MME) on the 4G network to attach to a 2G/3G network and the 4G network, wherein a circuit switched (CS) transceiver of the terminal is in off state;
sending, by the terminal, an extended service request message to the MME when a voice service needs to be implemented, so that the MME instructs that a base station on the 4G network needs to trigger a CS fallback;
receiving, by the terminal, a notification on measuring the 2G/3G network sent by the base station on the 4G network;
turning on, by the terminal, the CS transceiver, and measuring the 2G/3G network according to the notification; and
implementing, by the terminal, the voice service on the 2G/3G network according to a measurement result.
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Abstract
The present invention discloses a method for implementing a voice service in the embodiments of the present invention includes: a terminal attaches to a 2G/3G network and the 4G network through an MME on a 4G network; when a voice service does not need to be implemented, the CS transceiver of the terminal is in off state or static state; when a voice service needs to be implemented, for the terminal whose CS transceiver stays in off state, a CS fallback process needs to be triggered and turn on the CS transceiver to complete a voice service, for the terminal whose CS transceiver stays in static state, directly implementing a voice service through the 2G/3G network. The solution in embodiments of the present invention applies to a dual radio dual-mode terminal.
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Citations
19 Claims
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1. A method for implementing a voice service, comprising:
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residing, by a terminal, in a cell on a 4G network; sending, by the terminal, a combined attachment message or a combined location update message to a mobility management entity (MME) on the 4G network to attach to a 2G/3G network and the 4G network, wherein a circuit switched (CS) transceiver of the terminal is in off state; sending, by the terminal, an extended service request message to the MME when a voice service needs to be implemented, so that the MME instructs that a base station on the 4G network needs to trigger a CS fallback; receiving, by the terminal, a notification on measuring the 2G/3G network sent by the base station on the 4G network; turning on, by the terminal, the CS transceiver, and measuring the 2G/3G network according to the notification; and implementing, by the terminal, the voice service on the 2G/3G network according to a measurement result. - View Dependent Claims (2, 3, 4, 5, 6, 7)
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8. A method for implementing a voice service, comprising:
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residing, by a terminal, in a cell on a 2G/3G network and a cell on a 4G network at the same time; sending, by the terminal, a combined attachment message or a combined location update message to a mobility management entity (MME) on the 4G network to complete combined attachment of the terminal to the 2G/3G network and the 4G network; keeping residing, by the terminal, in the cell on the 2G/3G network when a voice service does not need to be implemented; and implementing, by the terminal, the voice service through the 2G/3G network when the voice service needs to be implemented. - View Dependent Claims (9, 10)
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11. A terminal, wherein the terminal is a dual-mode terminal, comprising:
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a residing unit, configured to make the terminal reside in a cell on a 4G network; an attaching unit, configured to send a combined attachment message or a combined location update message to a mobility management entity (MME) on the 4G network, so that the terminal performs combined attachment to a 2G/3G network and the 4G network, wherein a CS transceiver of the terminal is in off state; a first sending unit, configured to send an extended service request message to the MME when a voice service needs to be implemented, so that the MME instructs that a base station on the 4G network needs to trigger a CS fallback; a receiving unit, configured to receive a notification on measuring the 2G/3G network sent by the base station on the 4G network; a starting unit, configured to turn on the CS transceiver and measure the 2G/3G network according to the notification; and a voice unit, configured to implement the voice service on the 2G/3G network according to a measurement result. - View Dependent Claims (12, 13, 14, 15, 16)
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17. A terminal, comprising:
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a residing unit, configured to make the terminal reside in a cell on a 2G/3G network and in a cell on a 4G network at the same time; an attaching unit, configured to send a combined attachment message or a combined location update message to a mobility management entity (MME) on the 4G network to complete combined attachment of the terminal to the 2G/3G network and the 4G network;
whereinthe residing unit is further configured to retain a residing state of the terminal in the cell on the 2G/3G network when a voice service does not need to be implemented; and a voice unit, configured to implement the voice service through the 2G/3G network when the voice service needs to be implemented. - View Dependent Claims (18, 19)
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Specification