CN103874041A

CN103874041A - Multimode dual-standby terminal-based called voice service processing method, device and system

Info

Publication number: CN103874041A
Application number: CN201210550044.2A
Authority: CN
Inventors: 冯征; 顾明; 吕红卫
Original assignee: China Mobile Group Design Institute Co Ltd
Current assignee: China Mobile Group Design Institute Co Ltd
Priority date: 2012-12-17
Filing date: 2012-12-17
Publication date: 2014-06-18
Anticipated expiration: 2032-12-17
Also published as: CN103874041B

Abstract

The invention discloses a multimode dual-standby terminal-based called voice service processing method, a multimode dual-standby terminal-based called voice service processing device and a multimode dual-standby terminal-based called voice service processing system. The method comprises the following steps that a location server to which a called terminal belongs queries an MME (mobility management entity) registered by the called terminal according to a first user identifier after receiving an SRI (sending routing information) message carrying the first user identifier of the called terminal from an MSC (mobile switching center) visited by a calling terminal when the calling terminal calls the called terminal, and indicates the MME to inform the called terminal of suspending an LTE (long-term evolution) data service; the MME informs the location server after determining that the called terminal suspends the LTE data service; the location server indicates the MME to inform the called terminal of recovering the LTE data service after receiving a voice service ending message from the MSC; the MME informs the location server after determining that the called terminal recovers the LTE data service. According to the scheme, the interference of adjacent frequency bands of an LTE wireless network and a 2G/3G (second-generation/third-generation) wireless network to a called voice service of a multimode dual-standby terminal can be eliminated.

Description

Called voice service processing method, device and system based on multimode dual-standby terminal

Technical Field

The present invention relates to the field of communications technologies, and in particular, to a called voice service processing method, a related device, and a system based on a multimode dual standby terminal.

Background

The 3GPP standard defines a Long Term Evolution (LTE) system architecture, where an LTE Core network only includes an Evolved Packet Core (EPC) architecture and does not include a circuit domain, and the EPC architecture is Evolved from the Packet domain and can carry data, voice and other services under the control of an Ip Multimedia Subsystem (IMS).

At present, an LTE network is built on the basis of the existing 2G/3G network, and under the condition that the coverage of the LTE network in the initial stage of building is incomplete, the 2G/3G network can be utilized to provide voice services for LTE users. A terminal capable of simultaneously accessing a 2G/3G network and an LTE network is called a multimode terminal, and the multimode terminal may be divided into: the multi-mode single-standby terminal and the multi-mode double-standby terminal are provided, the multi-mode single-standby terminal can only reside in an LTE network or a 2G/3G network, and the 3GPP standard defines two schemes of falling back to a circuit domain and controlling based on an IMS to realize the voice service of the multi-mode single-standby terminal; the multimode dual-standby terminal can simultaneously reside in an LTE network and a 2G/3G network, and can realize voice service through a 2G/3G core network circuit domain without transforming the existing 2G/3G network.

At present, the frequency bands used by the 2G and 3G wireless networks and the LTE wireless network primarily planned in china are as follows:

GSM 900: uplink 885-915 MHz/downlink 930-960 MHz;

DCS 1800: ascending 1710-1785 MHz/descending 1805-1880 MHz;

TD-SDMA: a band (2010-2025 MHz)/F band (1880-1920 MHz)/E band (2320-2370 MHz);

WCDMA: uplink at 1920-1980 MHz/downlink at 2110-2170 MHz;

TD-LTE: f band (1880-1920 MHz)/E band (2320-2370 MHz)/D band (2570-2620 MHz).

Therefore, the downlink frequency band of the DCS1800 wireless network is 1805-1880 MHz, the F frequency band of the TD-LTE wireless network is 1880-1920 MHz, and when the multimode dual-standby terminal works in the two frequency bands simultaneously, adjacent frequency interference is generated, which is represented as follows: when a terminal transmits data service in the F frequency band of a TD-LTE wireless network, the uplink data transmission process may interfere the terminal receiving the paging message sent by the 2G core network circuit domain in the downlink frequency band of the DCS1800 wireless network, and may even cause the terminal to fail to normally receive the paging message, resulting in a paging failure. At present, a functional unit for pausing a data service can be added in a multimode dual-standby terminal, and when the multimode dual-standby terminal initiates a calling voice service, the functional unit can pause the data service of the multimode dual-standby terminal, so that the interference of the calling voice service of the multimode dual-standby terminal due to the adjacent frequency bands of an LTE wireless network and a 2G/3G wireless network can be eliminated; however, no scheme capable of eliminating the interference of the called voice service of the multimode dual standby terminal due to the adjacent frequency bands of the LTE wireless network and the 2G/3G wireless network exists at present.

Disclosure of Invention

The embodiment of the invention provides a method, a device and a system for processing a called voice service of a multimode dual-standby terminal, which are used for eliminating the interference of the called voice service of the multimode dual-standby terminal due to the adjacent frequency bands of an LTE wireless network and a 2G/3G wireless network.

A called voice service processing method based on a multimode dual standby terminal comprises the following steps:

in the process of calling a called terminal by a calling terminal, after receiving a sending routing information SRI message which is sent by a Mobile Switching Center (MSC) visited by the calling terminal and carries a first user identity of the called terminal, a location server to which the called terminal belongs queries a mobile Management Module (MME) registered by the called terminal according to the first user identity, and if the message is queried, the queried MME is indicated to inform the called terminal to suspend a Long Term Evolution (LTE) data service and continue to perform a subsequent called voice service processing flow;

after the MME determines that the called terminal suspends the LTE data service, the MME notifies the location server;

after receiving a notification sent by the MME that the called terminal suspends the LTE data service, the location server records the LTE data service blocking state of the called terminal; and

after receiving a voice service end message carrying the first user identity identifier sent by an MSC visited by the calling terminal, the location server indicates the MME to inform the called terminal of recovering the LTE data service;

and after the MME determines that the called terminal recovers the LTE data service, the MME notifies the location server. A called voice service processing system based on multimode dual standby terminal comprises a calling terminal, a called terminal, a Mobile Switching Center (MSC) visited by the calling terminal, a location server visited by the called terminal, and a Mobility Management (MME) registered by the called terminal, wherein:

the MSC visited by the calling terminal is used for sending a Sending Routing Information (SRI) message carrying a first user identity identifier of the called terminal to a location server to which the called terminal belongs in the process of calling the called terminal by the calling terminal; sending a voice service end message carrying the first user identity identifier to the location server;

the location server is configured to query, after receiving the SRI message sent by the MSC visited by the calling terminal, an MME registered by the called terminal according to the first subscriber identity, and if the query is received, instruct the queried MME to notify the called terminal to suspend an LTE long term evolution data service, and continue to perform a subsequent called voice service processing procedure; after receiving a notification sent by the MME that the called terminal suspends the LTE data service, recording the LTE data service blocking state of the called terminal; after receiving a voice service end message carrying the first user identity identifier sent by an MSC visited by the calling terminal, indicating the MME to inform the called terminal to recover the LTE data service;

the MME is used for notifying the location server after the called terminal is determined to suspend the LTE data service; and after determining that the called terminal recovers the LTE data service, notifying the position server.

after receiving a notification sent by the MME that the called terminal suspends the LTE data service, recording the LTE data service blocking state of the called terminal; and

after receiving a voice service end message carrying the first user identity identifier sent by an MSC visited by the calling terminal, indicating the MME to inform the called terminal to recover the LTE data service;

and receiving a notification sent by the MME after the MME determines that the called terminal recovers the LTE data service.

A location server, comprising:

a receiving unit, configured to receive, in a process of calling a called terminal by a calling terminal, a sending routing information SRI message that is sent by a mobile switching center MSC visited by the calling terminal and carries a first user identity of the called terminal; after receiving a notification sent by the MME that the called terminal suspends the LTE data service, recording the LTE data service blocking state of the called terminal; receiving a voice service end message which is sent by an MSC visited by the calling terminal and carries the first user identity;

an indicating unit, configured to query, after the receiving unit receives the SRI message, a mobility management module MME registered by the called terminal according to the first subscriber identity, and if the query is received, indicate the queried MME to notify the called terminal to suspend an LTE long term evolution data service; after receiving the voice service end message, indicating the MME to inform the called terminal to recover the LTE data service; receiving a notification sent by the MME after the MME determines that the called terminal recovers the LTE data service;

and the calling unit is used for continuing the subsequent called voice service processing flow.

in the process of calling a called terminal by a calling terminal, a mobile management module MME registered by the called terminal informs the called terminal of suspending LTE data service according to an indication sent by a location server to which the called terminal belongs and informing the called terminal of suspending LTE data service; after determining that the called terminal suspends the LTE data service, notifying the position server; and

according to an indication sent by the location server and used for informing the called terminal of recovering the LTE data service, informing the called terminal of recovering the LTE data service; after the called terminal is determined to recover the LTE data service, the position server is informed;

the indication of the location server to which the called terminal belongs is sent after the location server receives a Sending Routing Information (SRI) message which is sent by a Mobile Switching Center (MSC) visited by the calling terminal and carries a first user identity of the called terminal, and the SRI message is inquired to the MME according to the first user identity; the indication for informing the called terminal to recover the LTE data service sent by the location server is sent after the location server receives a voice service end message carrying the first user identity identifier and sent by an MSC visited by the calling terminal.

A mobility management module, comprising:

a receiving unit, configured to receive, during a process in which a calling terminal calls a called terminal, an indication that notifies a location server to which the called terminal belongs to that the called terminal suspends a long term evolution LTE data service; receiving an indication which is sent by the location server and used for informing the called terminal to recover the LTE data service;

a notification unit, configured to notify the called terminal to suspend an LTE data service according to an instruction, sent by the location server to which the called terminal belongs, for notifying the called terminal to suspend the LTE data service, where the instruction is received by the receiving unit; after the called terminal is determined to suspend the LTE data service, the position server is informed; according to the indication which is sent by the position server and used for informing the called terminal to recover the LTE data service and received by the receiving unit, informing the called terminal to recover the LTE data service; after the called terminal is determined to recover the LTE data service, the position server is informed;

the indication of the location server to which the called terminal belongs is sent after the location server receives a Sending Routing Information (SRI) message which is sent by a Mobile Switching Center (MSC) visited by the calling terminal and carries a first user identity of the called terminal, and inquires an MME (mobility management entity) where the receiving unit is located according to the first user identity; the indication for informing the called terminal to recover the LTE data service sent by the location server is sent after the location server receives a voice service end message carrying the first user identity identifier and sent by an MSC visited by the calling terminal.

in the process of calling a called terminal by a calling terminal, after receiving a Provided Roaming Number (PRN) message which is sent by a Home Location Register (HLR) and contains a first user identity of the called terminal and is sent by the called terminal, or receiving an Initial Address Message (IAM) which is sent by an MSC that is visited by the calling terminal and contains the first user identity, querying a mobile Management Module (MME) registered by the called terminal according to the first user identity, and if the information is queried, indicating the queried MME to inform the called terminal to suspend a Long Term Evolution (LTE) data service and continuing to perform a subsequent called voice service processing flow;

after the MME determines that the called terminal suspends the LTE data service, the MME notifies an MSC visited by the called terminal;

after receiving a notification sent by the MME that the called terminal suspends the LTE data service, the MSC visited by the called terminal records the LTE data service blocking state of the called terminal;

after receiving a release REL message carrying the first user identity identifier sent by the MSC visited by the calling terminal or a call release request message carrying the first user identity identifier sent by the called terminal, the MSC visited by the called terminal instructs the MME to notify the called terminal to recover the LTE data service;

after the MME determines that the called terminal recovers the LTE data service, the MME notifies an MSC visited by the called terminal;

the PRN message is sent after the HLR to which the called terminal belongs receives a routing information SRI request message carrying the first subscriber identity sent by the MSC to which the calling terminal visits, and the IAM is sent after the MSC to which the calling terminal visits receives a routing acknowledgement message SRI ACK carrying the first subscriber identity sent by the HLR to which the called terminal belongs.

A called voice service processing system based on multimode dual standby terminal comprises a calling terminal, a called terminal, a Mobile Switching Center (MSC) visited by the calling terminal, a Home Location Register (HLR) to which the called terminal belongs, the MSC visited by the called terminal, and a mobile Management Module (MME) registered by the called terminal; wherein,

the MSC visited by the calling terminal is used for sending a sending routing information SRI message carrying a first user identity identifier of the called terminal to the HLR in the process of calling the called terminal by the calling terminal; and after receiving a route acknowledgement (SRI ACK) message which is sent by the HLR and carries the first user identity, sending an Initial Address Message (IAM) which carries the first user identity to an MSC (mobile switching center) visited by the called terminal;

the HLR is configured to send a roaming number providing PRN message carrying the first subscriber identity to the MSC visited by the called terminal after receiving the route query request message; sending SRI ACK message carrying the first user identity identifier to MSC visited by the calling terminal;

the MSC visited by the called terminal is configured to, after receiving the PRN message or the IAM, query, according to the first user identity, an MME registered by the called terminal, and if the MME registered by the called terminal is queried, instruct the queried MME to notify the called terminal to suspend an LTE long term evolution data service; and continuing to perform a subsequent called voice service processing flow; after receiving a release REL message carrying the first user identity sent by an MSC visited by the calling terminal or a call release request message carrying the first user identity sent by the called terminal, indicating the MME to inform the called terminal of recovering the LTE data service;

the MME is used for notifying an MSC visited by the called terminal after the called terminal is determined to suspend the LTE data service; and after the called terminal is determined to recover the LTE data service, informing the MSC visited by the called terminal.

receiving a notification sent by the MME after the MME determines that the called terminal suspends the LTE data service;

after receiving a release REL message carrying the first user identity sent by an MSC visited by the calling terminal or a call release request message carrying the first user identity sent by the called terminal, indicating the MME to inform the called terminal of recovering the LTE data service; and

receiving a notification sent by the MME after the MME determines that the called terminal recovers the LTE data service;

the PRN message is sent after the HLR to which the called terminal belongs receives a sending routing information SRI message carrying the first subscriber identity sent by the MSC to which the calling terminal visits, and the IAM is sent after the MSC to which the calling terminal visits receives a sending routing acknowledgement SRI ACK message carrying the first subscriber identity sent by the HLR to which the called terminal belongs.

A mobile switching center comprising:

a receiving unit, configured to receive, in a process that a calling terminal calls a called terminal, a providing roaming number PRN message that is sent by a home location register HLR to which the called terminal belongs and carries a first user identity of the called terminal, or receive an initial address message IAM that is sent by an MSC visited by the calling terminal and carries the first user identity; receiving a release REL message carrying the first user identity identifier sent by an MSC visited by the calling terminal or a call release request message carrying the first user identity identifier sent by the called terminal;

an indicating unit, configured to query, after the receiving unit receives the PRN message or the IAM, a mobility management module MME registered by the called terminal according to the first subscriber identity, and if the query is received, instruct the queried MME to notify the called terminal to suspend an LTE long term evolution data service; and continuing to perform a subsequent called voice service processing flow; receiving a notification sent by the MME after the MME determines that the called terminal suspends the LTE data service; after the receiving unit receives the REL message or the call release request message, instructing the MME to notify the called terminal to recover the LTE data service; receiving a notification sent by the MME after the MME determines that the called terminal recovers the LTE data service;

the PRN message is sent after the HLR to which the called terminal belongs receives a routing information SRI message carrying the first subscriber identity sent by the MSC to which the calling terminal visits, and the IAM is sent after the MSC to which the calling terminal visits receives a route acknowledgement SRI ACK message carrying the first subscriber identity sent by the HLR to which the called terminal belongs.

The invention has the following beneficial effects:

in the method, the device and the system for processing the called voice service based on the multimode dual standby terminal, according to the scheme, in the process of calling the called terminal by the calling terminal, after a position server to which the called terminal belongs receives a sending routing information SRI message which is sent by a Mobile Switching Center (MSC) visited by the calling terminal and carries a first user identity of the called terminal, a mobile Management Module (MME) registered by the called terminal is inquired according to the first user identity, if the message is inquired, the inquired MME is indicated to inform the called terminal to suspend a Long Term Evolution (LTE) data service, and a subsequent called voice service processing flow is continued; after the MME determines that the called terminal suspends the LTE data service, the MME notifies the location server; after receiving a notification sent by the MME that the called terminal suspends the LTE data service, the location server records the LTE data service blocking state of the called terminal; after receiving a voice service end message carrying the first user identity identifier sent by an MSC visited by the calling terminal, the location server indicates the MME to inform the called terminal of recovering the LTE data service; and after the MME determines that the called terminal recovers the LTE data service, the MME notifies the location server. In the scheme, in the process of calling a called terminal by a calling terminal, a position server to which the called terminal belongs firstly confirms whether the called terminal uses an LTE data service, if so, the called terminal is informed of suspending the LTE data service, and after the LTE data service is suspended by the called terminal, the interference of the adjacent frequency bands of an LTE wireless network and a 2G/3G wireless network on the called voice service of a multimode dual-standby terminal can be eliminated, so that the calling terminal can be ensured to successfully call the called terminal; after the called voice services of the calling terminal and the called terminal are finished, the position server of the called terminal informs the called terminal to recover the LTE data service, so that the called terminal can be ensured to normally use the LTE data service.

Drawings

Fig. 1 is a flowchart of a called voice service processing method based on a multimode dual standby terminal according to an embodiment of the present invention;

fig. 2 is a flowchart of a preferred called voice service processing method based on a multimode dual standby terminal according to a first embodiment of the present invention;

fig. 3 is a schematic structural diagram of a called voice service processing apparatus based on a multimode dual standby terminal according to a first embodiment of the present invention;

fig. 4 is a flowchart of a called voice service processing method based on a multimode dual standby terminal according to a second embodiment of the present invention;

fig. 5 is a schematic structural diagram of a called voice service processing apparatus based on a multimode dual standby terminal according to a second embodiment of the present invention;

fig. 6 is a flowchart of a called voice service processing method based on a multimode dual standby terminal in the third embodiment of the present invention;

fig. 7 is a schematic structural diagram of a called voice service processing apparatus based on a multimode dual standby terminal according to a third embodiment of the present invention;

fig. 8 is a flowchart of a called voice service processing method based on a multimode dual standby terminal in the fourth embodiment of the present invention;

fig. 9 is a flowchart of a preferred called voice service processing method based on a multimode dual standby terminal according to a fourth embodiment of the present invention;

fig. 10 is a schematic structural diagram of a called voice service processing apparatus based on a multimode dual standby terminal according to a fourth embodiment of the present invention;

fig. 11 is a flowchart of a called voice service processing method based on a multimode dual standby terminal in the fifth embodiment of the present invention;

fig. 12 is a schematic structural diagram of a called voice service processing apparatus based on a multimode dual standby terminal in the fifth embodiment of the present invention.

Detailed Description

Example one

Aiming at the problem that the frequency bands of an LTE wireless network and a 2G/3G wireless network are adjacent to interfere the called voice service of a multimode dual-standby terminal in the prior art, the embodiment of the invention provides a called voice service processing method based on the multimode dual-standby terminal, the flow of the method is shown in figure 1, and the method specifically comprises the following execution steps:

s10: in the process of calling a called terminal by a calling terminal, a location server to which the called terminal belongs receives a Send Routing Information (SRI) message carrying a first user identity of the called terminal, which is sent by a Mobile Switching Center (MSC) visited by the calling terminal.

In the process of calling a called terminal by a calling terminal, an MSC where the calling terminal is located first sends an SRI message to a location server to which the called terminal belongs, where the SRI message carries a first Subscriber identity of the called terminal, which is currently a Mobile Subscriber international isdn (MSISDN) number, and each Subscriber Identity Module (SIM) card has a unique MISIDN.

S11: the location server to which the called terminal belongs queries a Mobility Management Entity (MME) registered by the called terminal according to the first user identity, and if the MME is queried, executes S12 and S14; otherwise, S14 is executed.

The MME registered by the called terminal is stored in the location server to which the called terminal belongs, so that the called terminal can be known to be possibly in the LTE network currently.

S12: and the position server to which the called terminal belongs indicates the inquired MME to inform the called terminal to suspend the LTE data service.

When the MME registered by the called terminal is inquired, namely the called terminal is possibly using the LTE data service currently, the inquired MME is indicated to inform the called terminal to suspend the LTE data service.

S13: and after the MME determines that the called terminal suspends the LTE data service, the MME notifies the location server.

S14: and continuing to perform the subsequent called voice service processing flow.

Whether the MME registered by the called terminal is inquired or not, the subsequent called voice service processing flow needs to be continued.

S15: and after receiving a voice service end message carrying a first user identity identifier sent by an MSC (mobile switching center) visited by the calling terminal, the position server indicates the MME to inform the called terminal of recovering the LTE data service.

When the calling terminal hangs up, the MSC visited by the calling terminal sends a voice ending message to the location server to indicate the MME to inform the called terminal to recover the LTE data service, and the voice ending message carries the first user identity of the called terminal.

S16: and after the MME determines that the called terminal recovers the LTE data service, the MME notifies the location server.

In the scheme, in the process of calling a called terminal by a calling terminal, a position server to which the called terminal belongs firstly confirms whether the called terminal uses an LTE data service, if so, the called terminal is informed of suspending the LTE data service, and after the LTE data service is suspended by the called terminal, the interference of the adjacent frequency bands of an LTE wireless network and a 2G/3G wireless network on the called voice service of a multimode dual-standby terminal can be eliminated, so that the calling terminal can be ensured to successfully call the called terminal; after the called voice services of the calling terminal and the called terminal are finished, the position server of the called terminal informs the called terminal to recover the LTE data service, so that the called terminal can be ensured to normally use the LTE data service.

The individual steps in the above-described method are described in detail below.

Specifically, the Location Server includes a Home Location Register (HLR) and a Home Subscriber Server (HSS), and after receiving an SRI message carrying a first user identity of the called terminal sent by an MSC visited by the calling terminal, the Location Server to which the called terminal belongs in S11 queries an MME registered by the called terminal according to the first user identity, specifically including: after receiving the SRI message, the HLR sends a first LTE data service blocking request message carrying a first user identity identifier to the HSS; and after receiving the first LTE data service blocking request message, the HSS queries the MME registered by the called terminal and the user identity used for registration according to the first user identity.

In order to satisfy the above signaling flow, a corresponding interface needs to be added between the HLR and the HSS.

The existing mobile terminals are divided into two types, one is an LTE multimode dual-standby single-card terminal, and the other is an LTE multimode dual-standby dual-card terminal. The LTE multimode dual-standby single-card terminal can use a user identity to reside in an LTE wireless network and a 2G/3G wireless network simultaneously, and the user identity used by the calling terminal calling the called terminal and the user identity used by the called terminal residing in the LTE wireless network are the same; the LTE multimode dual-standby dual-card terminal uses two user identity identifiers, namely one user identity identifier is used in a 2G/3G wireless network, and one user identity identifier is used in the LTE wireless network, so that the MME registered by the called terminal and the used user identity identifier need to be determined.

Specifically, the step of the location server instructing, by the MME in S12, the queried MME to notify the called terminal to suspend the LTE data service includes: and the HSS sends a second LTE data service blocking request message carrying the user identity used for registration to the MME.

After the user identity identifier used for registration of the called terminal and the registered MME are queried, a second LTE data service barring request message carrying the user identity identifier used for registration may be sent to the MME.

After the MME in S13 determines that the called terminal suspends the LTE data service, notifying the location server specifically includes: after receiving the second LTE data service blocking request message, the MME determines whether the called terminal is registered; if the user identity is registered, forwarding a second LTE data service blocking request message to the called terminal, and sending the second LTE data service blocking request message carrying the user identity used for registration to the HSS after receiving a second LTE data service blocking confirmation message returned by the called terminal; and if not, sending a second LTE data service blocking confirmation message to the HSS.

After receiving the notification sent by the MME that determines that the called terminal suspends the LTE data service, the location server in S14 records the LTE data service blocking status of the called terminal, which specifically includes: after receiving the second LTE data service blocking confirmation message, the HSS sends a first LTE data service blocking confirmation message carrying the first user identity identifier to the HLR; and the HLR receives the first LTE data service blocking confirmation message and records the LTE data service blocking state of the called terminal.

Specifically, the sending, by the HSS, a second LTE data service barring request message carrying a user identity used for registration of the called terminal to the MME specifically includes the following two cases:

first, if the HSS inquires that the user identity used for registration is the first user identity, a second LTE data service barring request message carrying the first user identity is sent to the MME.

This situation is applicable to LTE multimode dual standby single card terminals.

Secondly, if the HSS inquires that the user identity used for registration is a second user identity associated with the first user identity, a second LTE data service barring request message carrying the second user identity is sent to the MME, wherein the called terminal uses both the first user identity and the second user identity.

This situation is applicable to LTE multimode dual standby dual card terminals. At this time, the HSS is required to store the association relationship between the first user identity and the second user identity used by the LTE multimode dual-standby dual-card terminal.

If the user identity used for registration is not inquired by the HSS, the called terminal is not in the LTE network at the moment, and the processing flow of normally paging the called terminal can be continued.

Specifically, the location server includes an HLR and an HSS, and after receiving a voice service end message carrying a first user identity and sent by an MSC visited by the calling terminal, the location server in S15 instructs the MME to notify the called terminal to resume the LTE data service, which specifically includes:

after receiving a voice service end message sent by an MSC (mobile switching center) visited by a calling terminal, an HLR (home location register) sends a first LTE (long term evolution) data service recovery request message carrying a first user identity to an HSS (home location register);

and after receiving the first LTE data service recovery request message, the HSS sends a second LTE data service recovery request message carrying the user identity used for registration to the MME.

The HSS may maintain a "first LTE data service barring acknowledgement message" state machine for each user identity, so that after receiving the voice termination request message, the MME registered by the called terminal may be determined according to the user identity carried in the voice termination request message and the "first LTE data service barring acknowledgement message" maintained in the state machine, and send a second LTE data service resumption request message carrying the user identity used for registration to the MME.

After the MME in S16 determines that the called terminal recovers the LTE data service, the notification to the location server specifically includes: after receiving the second LTE data service recovery request message, the MME sends the second LTE data service recovery request message to the called terminal; and sending the LTE data service recovery confirmation message returned by the called terminal to the HSS.

Preferably, after the MME sends the second LTE data service barring request message to the called terminal, the method further includes: the MME instructs a Serving Gateway (S-GW) to suspend the downlink data traffic of the called terminal.

As a preferred scheme, after sending the second LTE data service barring request message to the called terminal, the MME may control the relevant S-GW to suspend the downlink data service of the called terminal temporarily, so as to further save LTE wireless air interface resources.

Preferably, after the MME receives the second LTE data service restoration request message and sends the second LTE data service restoration request message to the called terminal, the method further includes: and the MME instructs the S-GW to recover the downlink data service of the called terminal.

As a preferred scheme, after sending the second request message for recovering the LTE data service to the called terminal, the MME controls the relevant S-GW to recover the downlink data service of the user, so as to ensure that the called terminal can normally use the LTE data service.

The following describes in detail the processing method of the called voice service based on the multimode dual standby terminal in this embodiment with reference to a flow of the calling terminal calling the called terminal in the prior art, where the flow of the method is shown in fig. 2, the location server includes an HLR and an HSS, and the location server is not shown in the figure. The specific execution steps are as follows:

s200: in the process of calling a called terminal by a calling terminal, an MSC (Mobile switching center) visited by the calling terminal sends an SRI (short message identifier) carrying a first user identity of the called terminal to an HLR (home location register) to which the called terminal belongs.

S201: after receiving the SRI, the HLR to which the called terminal belongs sends a first LTE data service barring request message carrying a first subscriber identity to the HSS to which the called terminal belongs, and then executes S209.

S202: after receiving the first LTE data service blocking request message sent by the HLR, the HSS to which the called terminal belongs inquires the MME registered by the called terminal and the user identity used for registration according to the first user identity, and sends a second LTE data service blocking request message carrying the user identity used for registration to the searched MME.

S203: after receiving the second LTE data service blocking request message, the MME determines whether the called terminal is registered; if registered, go to S204; otherwise, S207 is executed.

S204: and forwarding the second LTE data service blocking request message to the called terminal.

S205: and after receiving the second LTE data service blocking request message, the called terminal suspends the LTE data service and returns a second LTE data service blocking confirmation message carrying the user identity used for registration to the MME.

S206: and after receiving the second LTE data service blocking confirmation message, the MME sends the second LTE data service blocking confirmation message to the HSS.

S207: and the MME sends a second LTE data service blocking confirmation message to the HSS.

S208: and after receiving the second LTE data service blocking confirmation message, the HSS sends a first LTE data service blocking confirmation message carrying the first user identity identifier to the HLR.

S209: the HLR transmits a Provide Roaming Number (PRN) message carrying a first subscriber identity to an MSC visited by the called terminal.

S210: after receiving the PRN message, the MSC visited by the called terminal returns a PRN Acknowledge (ACK) message to the HLR to which the calling terminal belongs.

S211: and after receiving the PRN ACK message, the HLR to which the called terminal belongs sends an SRI-carrying ACK message to the MSC visited by the calling terminal.

S212: after receiving the SRI ACK Message, the MSC visited by the calling terminal sends an Initial Address Message (IAM) to the MSC visited by the called terminal.

S213: and the MSC visited by the called terminal pages the called terminal through the 2G/3G wireless network.

S214: the MSC in which the called terminal is located sends an Address Complete Message (ACM) to the MSC visited by the calling terminal.

At this time, the calling terminal can receive the echo ring, and then the called terminal can talk after answering.

S215: when the calling terminal hangs up, the MSC visited by the calling terminal sends an REL (Release) message to the MSC visited by the called terminal.

S216: MSC visited by calling terminal sends voice service end message to HLR which called terminal belongs to.

S215 and S216 may be performed simultaneously or sequentially.

S217: after receiving the voice service end message, the HLR to which the called terminal belongs sends a first LTE data service recovery request message carrying a first user identity identifier to the HSS to which the called terminal belongs.

S218: and after receiving the first LTE data service recovery request message, the HSS sends a second LTE data service recovery request message carrying the user identity used for registration to the MME.

S219: and after receiving the second LTE data service recovery request message, the MME sends the second LTE data service recovery request message to the called terminal.

S220: and after receiving the second LTE data service recovery request message, the called terminal recovers the LTE data service and returns an LTE data service recovery confirmation message to the MME.

S221: and after receiving the LTE data service recovery confirmation message, the MME sends the message to the HSS.

Based on the same inventive concept, an embodiment of the present invention provides a called voice service processing system based on a multimode dual standby terminal, the structure of the system is shown in fig. 3, and the system includes a calling terminal 30, a called terminal 31, an MSC32 visited by the calling terminal, a location server 33 to which the called terminal belongs, and an MME34 registered by the called terminal, wherein:

the MSC32 visited by the calling terminal is used for sending an SRI message carrying a first user identity identifier of the called terminal to a location server to which the called terminal belongs in the process of calling the called terminal by the calling terminal; and sending a voice service end message carrying the first user identity identifier to the location server.

The location server 33 is configured to, after receiving an SRI message sent by an MSC visited by the calling terminal, query, according to the first user identity, an MME registered by the called terminal, and if the query is received, instruct the queried MME to notify the called terminal of suspending the LTE data service, and continue to perform a subsequent called voice service processing procedure; after receiving a notification sent by the MME that the called terminal suspends the LTE data service, recording the LTE data service blocking state of the called terminal; and after receiving a voice service end message carrying a first user identity identifier sent by an MSC visited by the calling terminal, indicating the MME to inform the called terminal to recover the LTE data service.

The MME34 is used for notifying the location server after the called terminal is determined to suspend the LTE data service; and after the called terminal is determined to recover the LTE data service, the position server is informed.

Specifically, the location server 33 includes an HLR331 and an HSS 332; wherein:

and the HLR331 is configured to send a first LTE data service barring request message carrying the first subscriber identity to the HSS after receiving the SRI message.

And the HSS332 is configured to, after receiving the first LTE data service barring request message, query, according to the first user identity, an MME registered by the called terminal and a user identity used for registration.

Specifically, the location server 33 is specifically configured to: sending a second LTE data service blocking request message carrying the user identity used for registration to the MME; wherein:

MME34, specifically to: after receiving the second LTE data service blocking request message, determining whether the called terminal is registered; if the user identity is registered, forwarding a second LTE data service blocking request message to the called terminal, and sending the second LTE data service blocking request message carrying the user identity used for registration to the HSS after receiving a second LTE data service blocking confirmation message returned by the called terminal; and if not, sending a second LTE data service blocking confirmation message to the HSS.

HSS332, configured to send a second LTE data service barring request message carrying a user identity used for registration to the MME; after receiving the second LTE data service blocking confirmation message, sending a first LTE data service blocking confirmation message carrying the first user identity identifier to the HLR;

the HLR331 is specifically configured to record the LTE data service barring state of the called terminal after receiving the first LTE data service barring acknowledgement message.

Specifically, the HSS332 is specifically configured to: if the user identity used for registration is inquired to be the first user identity, sending a second LTE data service blocking request message carrying the first user identity to the MME; and if the user identity used for registration is inquired to be a second user identity associated with the first user identity, sending a second LTE data service blocking request message carrying the second user identity to the MME, wherein the called terminal simultaneously uses the first user identity and the second user identity.

Specifically, the HLR331 is specifically configured to send a first LTE data service restoration request message carrying a first user identity to the HSS after receiving a voice service end message sent by an MSC visited by the calling terminal.

The HSS332 is specifically configured to send, after receiving the first LTE data service restoration request message, a second LTE data service restoration request message carrying a user identity used for registration to the MME.

MME34, specifically to: after receiving a second LTE data service recovery request message, sending the second LTE data service recovery request message to a called terminal; and sending the LTE data service recovery confirmation message returned by the called terminal to the HSS.

Preferably, the MME34 is further configured to suspend the downlink data service of the called terminal by the S-GW after sending the second LTE data service barring request message to the called terminal.

Preferably, the MME34 is further configured to recover, after receiving the second LTE data service recovery request message, the downlink data service of the called terminal by the S-GW.

Example two

Based on the same inventive concept, an embodiment of the present invention provides a called voice service processing method based on a multimode dual-standby terminal, where an execution main body of the method is a location server to which a called terminal belongs, and a flow is shown in fig. 4, where the execution main body is omitted in the flow, and the specific execution steps are as follows:

s40: in the process of calling a called terminal by a calling terminal, receiving an SRI message which is sent by an MSC (mobile switching center) visited by the calling terminal and carries a first user identity identifier of the called terminal.

S41: inquiring the MME registered by the called terminal according to the first user identity, and if the MME is inquired, executing S42 and S44; otherwise, S44 is executed.

S42: and indicating the inquired MME to inform the called terminal to suspend the LTE data service.

S43: and recording the LTE data service blocking state of the called terminal after receiving a notification sent by the MME that the called terminal suspends the LTE data service.

S44: and continuing to perform the subsequent called voice service processing flow.

The called voice processing method based on the multimode dual standby terminal further comprises the following steps:

s45: and after receiving a voice service end message which is sent by an MSC (mobile switching center) visited by the calling terminal and carries the first user identity identifier, indicating the MME to inform the called terminal of recovering the LTE data service.

S46: and receiving a notification sent by the MME after the called terminal recovers the LTE data service.

The individual steps in the above-described process flow are described in detail below.

Specifically, the location server includes an HLR and an HSS, and after receiving the SRI message carrying the first user identity of the called terminal sent by the MSC visited by the calling terminal, the location server to which the called terminal belongs in S41 queries, according to the first user identity, an MME registered by the called terminal, specifically including: after receiving the SRI message, the HLR sends a first LTE data service blocking request message carrying a first user identity to the HSS; and after receiving the first LTE data service blocking request message, the HSS queries the MME registered by the called terminal and the user identity used for registration according to the first user identity.

Specifically, the instructing, by the MME queried in S42, the step of notifying the called terminal to suspend the LTE data service includes: and the HSS sends a second LTE data service blocking request message carrying the user identity used for registration to the MME.

After receiving the notification sent by the MME that determines that the called terminal suspends the LTE data service, the step S43 of recording the LTE data service blocking status of the called terminal specifically includes: after receiving a second LTE data service blocking confirmation message which is sent by the MME and carries the user identity used for registration, the HSS sends a first LTE data service blocking confirmation message which carries the first user identity to the HLR; the second LTE data service blocking confirmation message is sent after the MME forwards a second LTE data service blocking request message to the called terminal and receives the second LTE data service blocking confirmation message which is returned by the called terminal and carries the user identity identifier used for registration when the called terminal is registered; or, when the called terminal is not registered, the message is directly sent; and after receiving the first LTE data service blocking confirmation message, the HLR records the LTE data service blocking state of the called terminal.

Specifically, the sending, by the HSS, a second LTE data service barring request message carrying a user identity used for registration of the called terminal to the MME specifically includes: if the HSS inquires that the user identity used for registration is the first user identity, sending a second LTE data service blocking request message carrying the first user identity to the MME; and if the HSS inquires that the user identity used for registration is a second user identity associated with the first user identity, sending a second LTE data service blocking request message carrying the second user identity to the MME, wherein the called terminal simultaneously uses the first user identity and the second user identity.

Specifically, after receiving the voice service end message carrying the first user identity and sent by the MSC visited by the calling terminal in S44, instructing the MME to notify the called terminal to resume the LTE data service specifically includes: after receiving a voice service end message sent by an MSC (mobile switching center) visited by a calling terminal, an HLR (home location register) sends a first LTE (long term evolution) data service recovery request message carrying a first user identity to an HSS (home location register); after receiving the first LTE data service recovery request message, the HSS sends a second LTE data service recovery request message carrying a user identity used for registration to the MME; receiving a LTE data service recovery confirmation message sent by the MME; and the LTE data service recovery confirmation message is transmitted to the called terminal after the MME receives the second LTE data service recovery request message and is forwarded after receiving the LTE data service recovery confirmation message returned by the called terminal.

Based on the same inventive concept, an embodiment of the present invention provides a location server, where a structure of the location server is shown in fig. 5, and the location server includes:

a receiving unit 50, configured to receive, in a process that a calling terminal calls a called terminal, an SRI message that is sent by an MSC that the calling terminal visits and carries a first user identity of the called terminal; after receiving a notification sent by the MME that the called terminal suspends the LTE data service, recording the LTE data service blocking state of the called terminal; and receiving a voice service end message which is sent by an MSC visited by the calling terminal and carries a first user identity identifier.

An indicating unit 51, configured to query, after the receiving unit receives the SRI message, an MME registered by the called terminal according to the first user identity, and if the MME is queried, instruct the queried MME to notify the called terminal to suspend the LTE data service; after receiving the voice service end message, indicating the MME to inform the called terminal to recover the LTE data service; and receiving a notification sent by the MME after the called terminal recovers the LTE data service.

And the calling unit 52 is used for continuing the subsequent called voice service processing flow.

Specifically, the indicating unit 51 includes an HLR511 and an HSS 512; wherein:

HLR511 is configured to send a first LTE data service barring request message carrying the first subscriber identity to HSS512 after receiving the SRI message.

HSS512, configured to query, after receiving the first LTE data service barring request message, an MME registered by the called terminal and a user identity used for registration according to the first user identity.

Specifically, the indicating unit 51 is configured to indicate the queried MME to notify the called terminal to suspend the LTE data service; the HSS is specifically configured to send, to the MME, a second LTE data service barring request message carrying a user identity used for registration.

Specifically, the indicating unit 51 is configured to record an LTE data service blocking status of the called terminal after receiving a notification that the MME determines that the called terminal suspends the LTE data service; wherein:

HSS512, specifically configured to send, to the HLR, a first LTE barring data service acknowledgement message carrying a first user identity after receiving a second LTE barring data service acknowledgement message carrying a user identity used for registration sent by the MME; the second LTE data service blocking confirmation message is sent after the MME forwards a second LTE data service blocking request message to the called terminal and receives the second LTE data service blocking confirmation message which is returned by the called terminal and carries the user identity identifier used for registration when the called terminal is registered; or directly when the called terminal is not registered.

The HLR511 is specifically configured to record the LTE data service barring state of the called terminal after receiving the first LTE data service barring acknowledgement message.

Specifically, the HSS512 is configured to send, to the MME, a second LTE data service barring request message carrying a user identity used for registration of the called terminal, and specifically is configured to: if the user identity used for registration is inquired to be the first user identity, sending a second LTE data service blocking request message carrying the first user identity to the MME; and if the user identity used for registration is inquired to be a second user identity associated with the first user identity, sending a second LTE data service blocking request message carrying the second user identity to the MME, wherein the called terminal simultaneously uses the first user identity and the second user identity.

Specifically, the instructing unit 51 is configured to instruct, after the receiving unit receives the voice service end message, the MME to notify the called terminal to resume the LTE data service; wherein:

the HLR511 is specifically configured to send a first LTE data service restoration request message carrying a first user identity to the HSS after receiving a voice service end message sent by the MSC visited by the calling terminal.

HSS512, specifically configured to send, after receiving the first LTE data service restoration request message, a second LTE data service restoration request message carrying a user identity used for registration to the MME; receiving a LTE data service recovery confirmation message sent by the MME; and the LTE data service recovery confirmation message is transmitted to the called terminal after the MME receives the second LTE data service recovery request message and is forwarded after receiving the LTE data service recovery confirmation message returned by the called terminal.

EXAMPLE III

Based on the same inventive concept, an embodiment of the present invention provides a called voice service processing method based on a multimode dual standby terminal, where an execution main body of the method is an MME registered by a called terminal, and a flow of the method is shown in fig. 6, where the execution main body is omitted in the flow, and the specific execution steps are as follows:

s60: in the process of calling the called terminal by the calling terminal, the called terminal is informed to suspend the LTE data service according to an indication which is sent by a position server to which the called terminal belongs and informs the called terminal to suspend the LTE data service. The indication of the location server to which the called terminal belongs is sent after the location server receives an SRI message which is sent by an MSC visited by the calling terminal and carries a first user identity of the called terminal, and the SRI message is inquired to an MME according to the first user identity.

S61: and after the called terminal is determined to suspend the LTE data service, the position server is notified.

S62: and informing the called terminal to recover the LTE data service according to an instruction sent by the position server and informing the called terminal to recover the LTE data service. The indication for informing the called terminal to recover the LTE data service sent by the location server is sent after the location server receives a voice service end message which is sent by an MSC (mobile switching center) visited by the calling terminal and carries a first user identity identifier.

S63: and after the called terminal is determined to recover the LTE data service, the position server is informed.

Specifically, the notifying the called terminal to suspend the LTE data service according to the instruction sent by the location server to which the called terminal belongs in S60 includes: after receiving a second LTE data service blocking request message which is sent by a position server and carries a user identity used for registration of a called terminal, determining whether the called terminal is registered; the user identity used for registration is searched by the location server according to the first user identity; if the user identity is registered, forwarding a second LTE data service blocking request message to the called terminal, and sending the second LTE data service blocking request message carrying the user identity used for registration to the location server after receiving a second LTE data service blocking confirmation message returned by the called terminal; and if not, sending a second LTE data service blocking confirmation message to the position server.

Specifically, after determining that the called terminal recovers the LTE data service in S63, notifying the location server, specifically includes: after receiving a second LTE data service recovery request message which is sent by the position server and carries the user identity used for registration, sending the second LTE data service recovery request message to the called terminal; and sending the LTE data service recovery confirmation message returned by the called terminal to the location server.

Preferably, after the MME sends the second LTE data service barring request message to the called terminal, the method further includes: and instructing the S-GW to suspend the downlink data service of the called terminal.

Preferably, after the MME receives the second LTE data service restoration request message and sends the second LTE data service restoration request message to the called terminal, the method further includes: and indicating the S-GW to recover the downlink data service of the called terminal.

Based on the same inventive concept, an embodiment of the present invention provides a mobility management module, where a structure of the mobility management module is shown in fig. 7, and the mobility management module includes:

a receiving unit 70, configured to receive, during a process that a calling terminal calls a called terminal, an indication that notifies the called terminal to suspend an LTE data service, where the indication is sent by a location server to which the called terminal belongs; and receiving an instruction which is sent by the position server and used for informing the called terminal to recover the LTE data service.

A notification unit 71, configured to notify the called terminal to suspend the LTE data service according to an instruction, which is sent by the location server to which the called terminal belongs and is used to notify the called terminal to suspend the LTE data service, and which is received by the receiving unit; after the called terminal is determined to suspend the LTE data service, the position server is informed; informing the called terminal to recover the LTE data service according to the indication which is received by the receiving unit and sent by the position server and informs the called terminal to recover the LTE data service; and after the called terminal is determined to recover the LTE data service, the position server is informed.

The indication of the location server to which the called terminal belongs is sent after the location server receives an SRI message which is sent by an MSC visited by the calling terminal and carries a first user identity of the called terminal, and an MME where a receiving unit is located is inquired according to the first user identity; the indication for informing the called terminal to recover the LTE data service sent by the location server is sent after the location server receives a voice service end message which is sent by an MSC (mobile switching center) visited by the calling terminal and carries a first user identity identifier.

Specifically, the notification unit 71 is specifically configured to: after receiving a second LTE data service blocking request message which is sent by a position server and carries a user identity used for registration of a called terminal, determining whether the called terminal is registered; the user identity used for registration is searched by the location server according to the first user identity; if the user identity is registered, forwarding a second LTE data service blocking request message to the called terminal, and sending the second LTE data service blocking request message carrying the user identity used for registration to the location server after receiving a second LTE data service blocking confirmation message returned by the called terminal; and if not, sending a second LTE data service blocking confirmation message to the position server.

Specifically, the notification unit 71 is specifically configured to: after receiving a second LTE data service recovery request message which is sent by the position server and carries the user identity used for registration, sending the second LTE data service recovery request message to the called terminal; and sending the LTE data service recovery confirmation message returned by the called terminal to the location server.

Preferably, the mobility-based management module further includes an instructing unit 72, configured to instruct the S-GW to suspend the downlink data service of the called terminal after the notifying unit sends the second LTE data service blocking request message to the called terminal.

Preferably, the indicating unit 72 is further configured to instruct the S-GW to recover the downlink data service of the called terminal after receiving the second LTE data service recovery request message and sending the second LTE data service recovery request message to the called terminal.

Example four

Based on the same inventive concept, an embodiment of the present invention provides a called voice service processing method based on a multimode dual standby terminal, where the flow of the method is shown in fig. 8, and the method specifically includes the following steps:

s80: in the process of calling a called terminal by a calling terminal, an MSC visited by the called terminal receives a PRN message carrying a first user identity of the called terminal and sent by an HLR to which the called terminal belongs, or receives an IAM carrying the first user identity and sent by the MSC visited by the calling terminal.

In the existing language service of calling a called terminal by a calling terminal, a PRN message is sent after an HLR (home location register) to which the called terminal belongs receives an SRI message which is sent by an MSC (mobile switching center) to which the calling terminal visits and carries a first user identity identifier, and an IAM (international access mark) is sent after the MSC to which the calling terminal visits receives an SRI ACK message which is sent by the HLR to which the called terminal belongs and carries the first user identity identifier. After receiving the PRN message or the IAM, the MSC visited by the called terminal may trigger the procedure to prevent the LTE data service being used by the called terminal.

S81: the MSC visited by the called terminal inquires the MME registered by the called terminal according to the first user identity, and if the MME is inquired, S82 and S83 are executed; otherwise, S82 is executed.

S82: MSC visited by the called terminal continues to process the following called voice service processing flow.

S83: and the MSC visited by the called terminal indicates the inquired MME to inform the called terminal to suspend the LTE data service.

S84: and after the MME determines that the called terminal suspends the LTE data service, the MME notifies the MSC visited by the called terminal.

S85: after receiving the notification sent by the MME that the called terminal suspends the LTE data service, the MSC visited by the called terminal records the LTE data service blocking state of the called terminal.

S86: and after receiving the REL message carrying the first user identity identifier sent by the MSC visited by the calling terminal or the call release request message carrying the first user identity identifier sent by the called terminal, the MSC visited by the called terminal indicates the MME to inform the called terminal of recovering the LTE data service.

S87: and after the MME determines that the called terminal recovers the LTE data service, the MME notifies the MSC visited by the called terminal.

After the voice service between the calling terminal and the called terminal is finished, the MME registered by the called terminal needs to inform the called terminal to recover the LTE data service, so that the called terminal can be ensured to continue to use the LTE data service.

Specifically, the querying, by the MSC visited by the called terminal in S81 and S82, the mobility management module MME registered by the called terminal according to the first subscriber identity, and if the query is received, the query MME is indicated to instruct the called terminal to notify the called terminal to suspend the LTE data service, which specifically includes: the MSC visited by the called terminal inquires whether a first user identity exists in the stored user identity corresponding to the LTE multimode dual standby terminal; if the first user identity exists, determining that the terminal type of the called terminal is an LTE multimode dual standby terminal; inquiring MME registered by the called terminal and a user identity used for registration in the stored position information of the visiting terminal; and if the MME registered by the called terminal is inquired, sending a request message for stopping the LTE data service, which carries the user identity used for registration, to the inquired MME.

Specifically, the process of storing the user identity identifier corresponding to the LTE multimode dual standby terminal by the MSC visited by the called terminal specifically includes: after receiving an access request carrying a user identity identifier and LTE multimode dual-standby mode information, an MSC (mobile switching center) visited by a called terminal adds the user identity identifier to a user identity identifier corresponding to the LTE multimode dual-standby terminal.

Here, the MSC is required to be able to identify the LTE multimode dual standby terminal and store the terminal type as "LTE multimode dual standby terminal". Currently, in the 3GPP TS 24.008 specification, an "E-UTRA TDD support" field is defined in the "Mobile Station Classmark 3" parameter, 1 bit: "E-UTRA TDD notsunported = 0" identifies that the terminal does not support LTE, "E-UTRA TDD supported = 1" identifies that the terminal supports LTE. The terminal contains a parameter of ' Mobile Station Classmark ' in an ' LAU REQUEST message accessed to a core network MSC Server, but only ' Mobile Station Classmark1 ' and ' Mobile Station Classmark2 ' are included, and ' Mobile Station Classmark3 ' is not included; and "Mobile StationClassmark 3" is used mainly for SRVCC. The scheme needs to expand the 3GPP specification, and the value of the LTE multimode dual standby mode is increased by 'MobileStation Classmark 3', and the 'LAU REQUEST' contains 'MobileStation Classmark 3'. When receiving the information carrying the LTE multimode dual standby mode information, namely Mobile Station Classmark3, sent by the called terminal, the MSC visited by the called terminal can determine that the terminal is the LTE multimode dual standby terminal.

The process of storing the location information of the called terminal by the MSC visited by the called terminal may specifically include the following two cases:

when the terminal is in the 2G/3G wireless network, the terminal initiates position update to the visited MSC to notify the position of the terminal; and when the terminal is resided in the LTE wireless network, the terminal initiates a position update to the visited MME to notify the position of the terminal. For the LTE multimode dual standby terminal, since the LTE multimode dual standby terminal can be simultaneously camped on the 2G/3G wireless network and the LTE wireless network, in order to prevent the LTE data service during the process of the called voice service performed by the called terminal, the MSC visited by the called terminal is required to store the location information of the called terminal. The terminal can carry the 'joint position updating' mark when the process position of the MME is updated, and the MME initiates the 'joint position updating' with the MSC of the 2G/3G core network according to the 'joint position updating' mark; it is also possible to initiate a "joint location update" with the MSC of the 2G/3G core network directly for all accessed terminals through the MME.

Therefore, the MSC visited by the called terminal receives the location update request message carrying the first subscriber identity sent by the called terminal and the combined location update request message carrying the first subscriber identity sent by the MME registered by the called terminal in sequence, and the processing procedures are different for different kinds of called terminals.

If the called terminal is an LTE multimode dual-standby single-card terminal, after an MSC (mobile switching center) visited by the called terminal receives a first Location updating request message carrying a first user identity identifier and sent by the called terminal and a combined Location updating request message carrying the first user identity identifier and sent by an MME (mobility management entity) registered by the called terminal in sequence, the Location Area Identity (LAI) information of the first user identity identifier used by the called terminal and the registered MME are stored; the first combined location updating request message is sent to an MSC (mobile switching center) where the called terminal is located by an MME (mobility management entity) after the MME receives a second location updating request which is sent by the called terminal and carries a combined location updating identifier and a first user identity identifier or receives a second location updating request message which is sent by the called terminal and carries the first user identity identifier;

at this time, the MSC visited by the called terminal stores the LAI information of the called terminal in the 2G/3G wireless network and the location information in the LTE wireless network (i.e. the currently visited MME).

If the called terminal is an LTE multimode dual-standby dual-card terminal, after an MSC (mobile switching center) visited by the called terminal receives a first position updating request message carrying a first user identity identifier and sent by the called terminal and a combined position updating request message carrying a second user identity identifier and sent by an MME (mobility management entity) registered by the called terminal, acquiring the association relationship between the first user identity identifier and the second user identity identifier from an HLR (home location register), and storing LAI (local area identity) information of the first user identity identifier used by the called terminal and the MME registered by the called terminal by the second user identity identifier associated with the first user identity identifier; the combined location update request message is sent to the MSC where the called terminal is located by the MME after the MME receives a fifth location update request carrying the combined location update identity and the second subscriber identity sent by the called terminal or receives a second location update request carrying the second subscriber identity sent by the called terminal.

At this time, after the MSC visited by the called terminal respectively completes the updating of the first user identity used by the called terminal and the position using the second user identity, the information that the first user identity and the second user identity used by the called terminal are associated to the same terminal is obtained from the subscription information stored by the HLR to which the called terminal belongs, and the information that the first user identity (used for accessing the 2G/3G network and providing voice service) and the second user identity (used for accessing the LTE network and not providing voice service) are used by the called terminal in the user subscription information, then the MSC visited by the called terminal can simultaneously use the position information of the first user identity and the second user identity by the called terminal, wherein the position information that the first user identity is used by the called terminal in the 2G/3G wireless network (namely the MSC visited at present) and the position information that the second user identity is used by the called terminal in the LTE network are stored, and the position information that the second user identity is used by the called terminal in the LTE network is not provided with the second user identity Location information of the wire mesh (i.e. currently visited MME).

Specifically, the sending, by the MSC visited by the called terminal, the LTE data service blocking request message carrying the user identity used for registration to the queried MME specifically includes:

if the MSC visited by the called terminal inquires that the user identity used for registration is the first user identity, sending a request message carrying the first user identity for preventing the LTE data service to the MME;

if the MSC inquired by the called terminal that the user identity used for registration is a second user identity associated with the first user identity, sending an LTE data service blocking request message carrying the second user identity to the MME, wherein the called terminal uses the first user identity and the second user identity simultaneously.

Specifically, after the MME in S84 determines that the called terminal suspends the LTE data service, the MME notifies the MSC visited by the called terminal, which specifically includes: after receiving the LTE data service blocking request message, the MME determines whether the called terminal is registered; if the LTE data service is registered, forwarding an LTE data service blocking request message to the called terminal, and sending the LTE data service blocking request message carrying the user identity used for registration to an MSC visited by the called terminal after receiving the LTE data service blocking confirmation message returned by the called terminal; if not, sending a message for stopping LTE data service confirmation to the MSC visited by the called terminal.

Specifically, the step of continuing the subsequent called voice service processing procedure by the MSC visited by the called terminal in S83 includes: MSC visited by the called terminal directly continues the called terminal; or after the MSC visited by the called terminal delays for a set time length, calling the called terminal; or after receiving the message for stopping the LTE data service confirmation, the MSC visited by the called terminal calls the called terminal.

Specifically, the instructing, by the MSC visited by the called terminal in S85, the MME to notify the called terminal to recover the LTE data service includes: and the MSC visited by the called terminal sends a request message for recovering the LTE data service, which carries the user identity used for registration, to the MME.

After the MME in S86 determines that the called terminal recovers the LTE data service, the MME notifies the MSC visited by the called terminal, which specifically includes: after receiving the request message for recovering the LTE data service, the MME sends the request message to the called terminal; and sending the LTE data service recovery confirmation message returned by the called terminal to the MSC visited by the called terminal after receiving the LTE data service recovery confirmation message.

Specifically, after the MME sends the LTE data service barring request message to the called terminal, the method further includes: and the MME instructs the S-GW to suspend the downlink data service of the called terminal.

Specifically, after receiving the request message for recovering the LTE data service and sending the request message to the called terminal, the MME further includes: and the MME instructs the S-GW to recover the downlink data service of the called terminal.

The following describes in detail a called voice service processing method based on a multimode dual standby terminal in this embodiment with reference to a flow of a calling terminal calling a called terminal in the prior art, where the flow of the method is shown in fig. 9, and the specific implementation steps are as follows:

s900: in the process of calling a called terminal by a calling terminal, an MSC (mobile switching center) visited by the calling terminal sends an SRI (short message identifier) message carrying a first user identity of the called terminal to an HLR (home location register) to which the called terminal belongs.

S901: after receiving the SRI message, the HLR to which the called terminal belongs sends a PRN message carrying a first user identity identifier to the MSC visited by the called terminal.

S902: after receiving the PRN message, the MSC visited by the called terminal inquires the MME registered by the called terminal and the user identity used for registration according to the first user identity, and sends a request message for preventing LTE data service, which carries the user identity used for registration, to the searched MME. Then S908 is performed.

S903: after receiving the LTE blocking data service, the MME determines whether the called terminal is registered; if so, executing S904; otherwise, S907 is performed.

S904: and forwarding the LTE data service blocking request message to the called terminal.

S905: and after receiving the LTE data service blocking request message, the called terminal suspends the LTE data service and returns an LTE data service blocking confirmation message carrying the user identity used for registration to the MME.

S906: and after receiving the LTE data service blocking confirmation message, the MME sends the LTE data service blocking confirmation message to the MSC visited by the called terminal.

S907: and the MME sends a message for stopping the LTE data service confirmation to the MSC visited by the called terminal.

S908: and the MSC visited by the called terminal returns a PRN ACK message to the HLR to which the called terminal belongs.

The home HLR of the called terminal performs S902, and then immediately performs S908.

S909: and after receiving the PRN ACK message, the HLR to which the called terminal belongs sends an SRI ACK message to the MSC visited by the calling terminal.

S910: after receiving the SRI ACK message, the MSC visited by the calling terminal sends an IAM to the MSC visited by the called terminal.

The manner of blocking the LTE data traffic of the called terminal according to the steps of S901-910 may be referred to as an early blocking manner. S908 may be executed after S901, and then S902 may be executed after S910 is executed, and this manner of blocking the LTE data service of the called terminal may be referred to as a late blocking manner. Both of these two ways can effectively block the LTE data service of the called terminal.

S911: and the MSC visited by the called terminal pages the called terminal through the 2G/3G wireless network.

S912: and the MSC where the called terminal is located sends the ACM message to the MSC visited by the calling terminal.

After S910, the MSC visited by the called terminal may directly perform S911; or after the MSC visited by the called terminal delays for a set time length, S911 is executed; or after receiving the LTE data service blocking acknowledgement message of S906, the MSC visited by the called terminal performs S911.

S913: after the called terminal hangs up, the MSC visited by the called terminal sends a request message for recovering the LTE data service, which carries the user identity used for registration, to the MME registered by the called terminal.

S914: and after receiving the LTE data service recovery request message, the MME sends the message to the called terminal.

S915: and after receiving the LTE data service recovery request message, the called terminal recovers the LTE data service and returns an LTE data service recovery confirmation message to the MME.

S916: and after receiving the LTE data service recovery confirmation message, the MME sends the message to the MSC visited by the called terminal.

Based on the same inventive concept, the embodiment of the present invention provides a called voice service processing system based on a multimode dual standby terminal, the structure of which is shown in fig. 10, and the system includes a calling terminal 100, a called terminal 101, an MSC102 visited by the calling terminal, an HLR103 to which the called terminal belongs, an MSC104 visited by the called terminal, and an MME105 registered by the called terminal; wherein,

the MSC102 visited by the calling terminal is used for sending an SRI message carrying a first user identity of the called terminal to the HLR in the process of calling the called terminal by the calling terminal; and after receiving the SRI ACK message which is sent by the HLR and carries the first user identity, sending an IAM which carries the first user identity to an MSC which is visited by the called terminal.

The HLR103 is configured to send, after receiving the route query request message, a PRN message carrying the first subscriber identity identifier to an MSC visited by the called terminal; and sending an SRI ACK message carrying the first user identity identifier to an MSC visited by the calling terminal.

The MSC104 visited by the called terminal is configured to, after receiving the PRN message or the IAM, query, according to the first user identity, an MME registered by the called terminal, and if the query is received, instruct the queried MME to notify the called terminal to suspend the LTE data service, and continue to perform a subsequent called voice service processing procedure; and after receiving a release REL message carrying the first user identity identifier sent by an MSC visited by the calling terminal or a call release request message carrying the first user identity identifier sent by the called terminal, indicating the MME to inform the called terminal to recover the LTE data service.

The MME105 is used for notifying an MSC visited by the called terminal after the called terminal is determined to suspend the LTE data service; and after the called terminal is determined to recover the LTE data service, informing the MSC visited by the called terminal.

Specifically, the MSC104 visited by the called terminal is specifically configured to: inquiring whether a first user identity exists in the stored user identity corresponding to the LTE multimode dual standby terminal; if the first user identity exists, determining that the terminal type of the called terminal is an LTE multimode dual standby terminal; inquiring MME registered by the called terminal and a user identity used for registration in the stored position information of the visiting terminal; and if the MME registered by the called terminal is inquired, sending a request message for stopping the LTE data service, which carries the user identity used for registration, to the inquired MME.

Specifically, the MSC104 visited by the called terminal is configured to store a user identity identifier corresponding to the LTE multimode dual standby terminal, and specifically configured to: and after receiving an access request carrying a user identity identifier and LTE multimode dual-standby mode information, storing the user identity identifier in a user identity identifier corresponding to the LTE terminal.

The MSC104 visited by the called terminal is configured to store the location information of the called terminal, and specifically configured to: if the called terminal is an LTE multimode dual-standby single-card terminal, after a first position updating request message carrying a first user identity identifier sent by the called terminal and a combined position updating request message carrying the first user identity identifier sent by an MME registered by the called terminal are received in sequence, the LAI information of the first user identity identifier used by the called terminal and the registered MME are stored; the MME sends a second location updating request carrying the joint location updating identifier and the first user identity identifier sent by the called terminal or receives a second location updating request carrying the first user identity identifier sent by the called terminal and then sends the second location updating request to the MSC where the called terminal is located; if the called terminal is an LTE multimode dual-standby dual-card terminal, after a first position updating request message carrying a first user identity and sent by the called terminal and a combined position updating request message carrying a second user identity and sent by an MME registered by the called terminal are received in sequence, acquiring the association relationship between the first user identity and the second user identity from an HLR, and storing LAI information of the first user identity used by the called terminal and the MME registered by the called terminal by the second user identity associated with the first user identity; the combined location update request message is sent to the MSC where the called terminal is located by the MME after the MME receives a second location update request carrying the combined location update identity and the second subscriber identity sent by the called terminal or receives a second location update request carrying the second subscriber identity sent by the called terminal.

Specifically, the MSC104 visited by the called terminal is specifically configured to: if the user identity used for registration is inquired to be a first user identity, sending a request message carrying the first user identity for preventing the LTE data service to the MME; and if the user identity used for registration is inquired to be a second user identity associated with the first user identity, sending an LTE data service blocking request message carrying the second user identity to the MME, wherein the called terminal simultaneously uses the first user identity and the second user identity.

Specifically, the MME105 is specifically configured to: after receiving the request message for preventing the LTE data service, determining whether the called terminal is registered; if the LTE data service is registered, forwarding an LTE data service blocking request message to the called terminal, and sending the LTE data service blocking request message carrying the user identity used for registration to an MSC visited by the called terminal after receiving the LTE data service blocking confirmation message returned by the called terminal; if not, sending a message for stopping LTE data service confirmation to the MSC visited by the called terminal.

Specifically, the MSC104 visited by the called terminal is specifically configured to: directly calling a called terminal; or after delaying the set time length, calling the called terminal; or calling the called terminal after receiving the LTE data service blocking confirmation message.

Specifically, the MSC104 visited by the called terminal is specifically configured to: and sending a request message for recovering the LTE data service carrying the user identity used for registration to the MME.

The MME105 is specifically configured to: after receiving a request message for recovering the LTE data service, sending the request message to a called terminal; and sending the LTE data service recovery confirmation message returned by the called terminal to the MSC visited by the called terminal after receiving the LTE data service recovery confirmation message.

Preferably, the MME105 is further configured to instruct the S-GW to suspend the downlink data service of the called terminal after sending the LTE data service blocking request message to the called terminal.

Preferably, the MME105 is further configured to instruct the S-GW to recover the downlink data service of the called terminal after receiving the LTE data service recovery request message and sending the LTE data service recovery request message to the called terminal.

EXAMPLE five

Based on the same inventive concept, an embodiment of the present invention provides a called voice service processing method based on a multimode dual standby terminal, where an execution main body of the method is an MSC visited by a called terminal, a flow of the method is shown in fig. 11, and the execution main body is omitted in the flow, and the specific execution steps are as follows:

s110: in the process of calling a called terminal by a calling terminal, receiving a PRN message which is sent by an HLR to which the called terminal belongs and carries a first user identity of the called terminal, or receiving an IAM which is sent by an MSC visited by the calling terminal and carries the first user identity.

S111: inquiring the MME registered by the called terminal according to the first user identity, and executing S112 and S113 if the MME is inquired; otherwise, S112 is performed.

S112: and continuing to perform the subsequent called voice service processing flow.

S113: and indicating the inquired MME to inform the called terminal to suspend the LTE data service.

S114: and receiving a notification sent by the MME after the MME determines that the called terminal suspends the LTE data service.

The PRN message is sent after an HLR (home location register) which is visited by a called terminal receives a routing query request message which is sent by an MSC (mobile switching center) which is visited by a calling terminal and carries a first user identity identifier, and the IAM is sent after the MSC which is visited by the calling terminal receives an SRIACK message which is sent by the HLR which is visited by the called terminal and carries the first user identity identifier.

S115: and after receiving a call release request message carrying a first user identity and sent by an MSC (mobile switching center) visited by the calling terminal or a called terminal, indicating the MME to inform the called terminal of recovering the LTE data service.

S116: and receiving a notification sent by the MME after the called terminal recovers the LTE data service.

Specifically, the querying, in S111 and S112, the MME registered by the called terminal according to the first subscriber identity, and if the MME is queried, indicating the queried MME to notify the called terminal to suspend the LTE data service, specifically includes: inquiring whether a first user identity exists in the stored user identity corresponding to the LTE multimode dual standby terminal; if the first user identity exists, determining that the terminal type of the called terminal is an LTE multimode dual standby terminal; inquiring MME registered by the called terminal and a user identity used for registration in the stored position information of the visiting terminal; and if the MME registered by the called terminal is inquired, sending a request message for stopping the LTE data service, which carries the user identity used for registration, to the inquired MME.

Specifically, the process of storing the user identity corresponding to the LTE multimode dual standby terminal specifically includes: and after receiving an access request carrying a user identity identifier and LTE multimode dual-standby mode information, adding the user identity identifier into a user identity identifier corresponding to the LTE multimode dual-standby terminal.

Specifically, the process of storing the location information of the called terminal includes:

if the called terminal is an LTE multimode dual-standby single-card terminal, after a first position updating request message carrying a first user identity identifier sent by the called terminal and a combined position updating request message carrying the first user identity identifier sent by an MME registered by the called terminal are received in sequence, the LAI information of the first user identity identifier used by the called terminal and the registered MME are stored; the first combined location updating request message is sent to an MSC (mobile switching center) where the called terminal is located by an MME (mobility management entity) after the MME receives a second location updating request which is sent by the called terminal and carries a combined location updating identifier and a first user identity identifier or receives a second location updating request message which is sent by the called terminal and carries the first user identity identifier;

if the called terminal is an LTE multimode dual-standby dual-card terminal, after a fourth location updating request message carrying a first user identity and sent by the called terminal and a combined location updating request message carrying a second user identity and sent by an MME registered by the called terminal are received in sequence, acquiring the association relationship between the first user identity and the second user identity from an HLR, and storing LAI information of the first user identity used by the called terminal and the MME registered by the called terminal by the second user identity associated with the first user identity; the combined location update request message is sent to the MSC where the called terminal is located by the MME after the MME receives a second location update request carrying the combined location update identity and the second subscriber identity sent by the called terminal or receives a second location update request carrying the second subscriber identity sent by the called terminal.

Specifically, the sending of the request message for blocking the LTE data service, which carries the user identity used for registration, to the queried MME specifically includes: if the user identity used for registration is inquired to be a first user identity, sending a request message carrying the first user identity for preventing the LTE data service to the MME; and if the user identity used for registration is inquired to be a second user identity associated with the first user identity, sending an LTE data service blocking request message carrying the second user identity to the MME, wherein the called terminal simultaneously uses the first user identity and the second user identity.

Specifically, the receiving, by the MME in S114, the notification sent after the called terminal determines that the LTE data service is suspended includes: receiving an LTE data service blocking confirmation message which is sent by an MME and carries a user identity used for registration; wherein, the message for preventing the LTE data service confirmation is as follows: after determining that the called terminal is registered, the MME forwards a request message for stopping the LTE data service to the called terminal, and sends the request message after receiving a confirmation message for stopping the LTE data service returned by the called terminal; the MME directly sends the information after determining that the called terminal is not registered.

Specifically, the step of continuing the subsequent called voice service processing flow in S113 specifically includes: directly continuing the called terminal; or after delaying the set time length, calling the called terminal; or calling the called terminal after receiving the LTE data service blocking confirmation message.

Specifically, the instructing MME in S115 notifies the called terminal to resume the LTE data service specifically includes: and sending a request message for recovering the LTE data service carrying the user identity used for registration to the MME.

The receiving, by the MME in S116, the notification sent after the called terminal recovers the LTE data service specifically includes: receiving a LTE recovery data confirmation message which is sent by an MME and carries a user identity used for registration; the LTE data recovery confirmation message is sent to the called terminal after the MME receives the LTE data recovery service request message; and sending the message after receiving the LTE data service recovery confirmation message returned by the called terminal.

Based on the same inventive concept, an embodiment of the present invention provides a mobile switching center, whose structure is shown in fig. 12, and includes:

a receiving unit 120, configured to receive, in a process that a calling terminal calls a called terminal, a PRN message that is sent by an HLR to which the called terminal belongs and carries a first user identity of the called terminal, or an IAM that is sent by an MSC visited by the calling terminal and carries the first user identity; and receiving a release REL message which is sent by an MSC visited by the calling terminal and carries the first user identity identifier or a call release request message which is sent by the called terminal and carries the first user identity identifier.

An indicating unit 121, configured to query, after the receiving unit receives the PRN message or the IAM, an MME registered by the called terminal according to the first user identity, and if the query is received, instruct the queried MME to notify the called terminal to suspend the LTE data service, and continue to perform a subsequent called voice service processing procedure; receiving a notification sent by the MME after the MME determines that the called terminal suspends the LTE data service; after receiving the REL message or the call release request message, the receiving unit indicates the MME to inform the called terminal to recover the LTE data service; and receiving a notification sent by the MME after the MME determines that the called terminal recovers the LTE data service. The PRN message is sent after an HLR (home location register) which is visited by a called terminal receives an SRI (sequence request identity) message which is sent by an MSC (mobile switching center) which is visited by a calling terminal and carries a first user identity, and the IAM is sent after the MSC which is visited by the calling terminal receives an SRI ACK message which is sent by the HLR which is visited by the called terminal and carries the first user identity.

Specifically, the indicating unit 121 is specifically configured to: inquiring whether a first user identity exists in the stored user identity corresponding to the LTE multimode dual standby terminal; if the first user identity exists, determining that the terminal type of the called terminal is an LTE multimode dual standby terminal; inquiring MME registered by the called terminal and a user identity used for registration in the stored position information of the visiting terminal; and if the MME registered by the called terminal is inquired, sending a request message for stopping the LTE data service, which carries the user identity used for registration, to the inquired MME.

Specifically, the indicating unit 121 is configured to store a user identity corresponding to the LTE multimode dual standby terminal, and specifically, store the user identity in the user identity corresponding to the LTE terminal after receiving an access request carrying the user identity and LTE multimode dual standby mode information;

the indicating unit 121 is configured to store location information of the called terminal, and specifically configured to: if the called terminal is an LTE multimode dual-standby single-card terminal, after a first position updating request message carrying a first user identity and sent by the called terminal and a combined position updating request message carrying the first user identity and sent by an MME registered by the called terminal are received in sequence, storing the LAI information of the position area identity of the first user identity and the registered MME used by the called terminal; the first combined location updating request message is sent to an MSC (mobile switching center) where the called terminal is located by an MME (mobility management entity) after the MME receives a second location updating request which is sent by the called terminal and carries a combined location updating identifier and a first user identity identifier or receives a second location updating request message which is sent by the called terminal and carries the first user identity identifier; if the called terminal is an LTE multimode dual-standby dual-card terminal, after a fourth location updating request message carrying a first user identity and sent by the called terminal and a combined location updating request message carrying a second user identity and sent by an MME registered by the called terminal are received in sequence, acquiring the association relationship between the first user identity and the second user identity from an HLR, and storing LAI information of the first user identity used by the called terminal and the MME registered by the called terminal by the second user identity associated with the first user identity; the combined location update request message is sent to the MSC where the called terminal is located by the MME after the MME receives a second location update request carrying the combined location update identity and the second subscriber identity sent by the called terminal or receives a second location update request carrying the second subscriber identity sent by the called terminal.

Specifically, the indicating unit 121 is configured to send, to the queried MME, a request message for blocking the LTE data service, where the request message carries a user identity used for registration, and specifically configured to: if the user identity used for registration is inquired to be a first user identity, sending a request message carrying the first user identity for preventing the LTE data service to the MME; and if the user identity used for registration is inquired to be a second user identity associated with the first user identity, sending an LTE data service blocking request message carrying the second user identity to the MME, wherein the called terminal simultaneously uses the first user identity and the second user identity.

Specifically, the indicating unit 121 is configured to receive a notification sent by the MME after the MME determines that the called terminal suspends the LTE data service, and specifically configured to: receiving an LTE data service blocking confirmation message which is sent by an MME and carries a user identity used for registration; wherein, the message for preventing the LTE data service confirmation is as follows: after determining that the called terminal is registered, the MME forwards a request message for stopping the LTE data service to the called terminal, and sends the request message after receiving a confirmation message for stopping the LTE data service returned by the called terminal; the MME directly sends the information after determining that the called terminal is not registered.

Specifically, the indicating unit 121 is configured to continue to perform a subsequent called voice service processing procedure, and specifically configured to: directly calling a called terminal; or after delaying the set time length, calling the called terminal; or calling the called terminal after receiving the LTE data service blocking confirmation message.

Specifically, the indicating unit 121 is configured to instruct the MME to notify the called terminal to resume the LTE data service, and specifically configured to: and sending a request message for recovering the LTE data service carrying the user identity used for registration to the MME.

Specifically, the indicating unit 121 is configured to receive a notification sent by the MME after the MME determines that the called terminal recovers the LTE data service, and specifically configured to: receiving a LTE recovery data confirmation message which is sent by an MME and carries a user identity used for registration; the LTE data recovery confirmation message is sent to the called terminal after the MME receives the LTE data recovery service request message; and sending the message after receiving the LTE data service recovery confirmation message returned by the called terminal.

It will be apparent to those skilled in the art that various changes and modifications may be made in the present invention without departing from the spirit and scope of the invention. Thus, if such modifications and variations of the present invention fall within the scope of the claims of the present invention and their equivalents, the present invention is also intended to include such modifications and variations.

Claims

1. A called voice service processing method based on a multimode dual standby terminal is characterized by comprising the following steps:

and after the MME determines that the called terminal recovers the LTE data service, the MME notifies the location server.

2. The method of claim 1, wherein if the location server includes a home location register HLR and a home subscriber server HSS, the location server to which the called terminal belongs queries, according to a first subscriber identity, an MME registered by the called terminal after receiving an SRI message that is sent by an MSC visited by the calling terminal and carries the first subscriber identity of the called terminal, specifically including:

after receiving the SRI message, the HLR sends a first LTE data service blocking request message carrying the first user identity identifier to the HSS;

and after receiving the first LTE data service blocking request message, the HSS queries the MME registered by the called terminal and the user identity used for registration according to the first user identity.

3. The method of claim 2, wherein the location server indicates the queried MME to notify the called terminal to suspend the LTE data service, specifically comprising:

the HSS sends a second LTE data service blocking request message carrying the user identity used for registration to the MME;

after the MME determines that the called terminal suspends the LTE data service, notifying the location server specifically includes:

after receiving the second LTE data service blocking request message, the MME determines whether the called terminal is registered;

if the user identity identifier is registered, forwarding the second LTE data service blocking request message to the called terminal, and sending the second LTE data service blocking request message carrying the user identity identifier used for registration to the HSS after receiving a second LTE data service blocking confirmation message returned by the called terminal;

if not, sending the second LTE data service blocking confirmation message to the HSS;

after receiving the notification sent by the MME that the called terminal suspends the LTE data service, the location server records the LTE data service blocking status of the called terminal, which specifically includes:

after receiving the second LTE data service blocking confirmation message, the HSS sends a first LTE data service blocking confirmation message carrying the first user identity identifier to the HLR;

and after receiving the first LTE data service blocking confirmation message, the HLR records the LTE data service blocking state of the called terminal.

4. The method of claim 3, wherein the HSS sending a second LTE data service barring request message to the MME, the second LTE data service barring request message carrying a user identity used for registration of the called terminal, specifically comprises:

if the HSS inquires that the user identity used for registration is the first user identity, sending a second LTE data service blocking request message carrying the first user identity to the MME;

if the HSS inquires that the user identity used for registration is a second user identity associated with the first user identity, sending a second LTE data service blocking request message carrying the second user identity to the MME, wherein the called terminal uses the first user identity and the second user identity simultaneously.

5. The method according to any one of claims 2 to 4, wherein, after receiving a voice service end message carrying the first subscriber identity and sent by an MSC visited by the calling terminal, the location server instructs the MME to notify the called terminal to resume the LTE data service, which specifically includes:

after receiving the voice service end message sent by the MSC visited by the calling terminal, the HLR sends a first LTE data service recovery request message carrying the first user identity identifier to the HSS;

after receiving the first LTE data service recovery request message, the HSS sends a second LTE data service recovery request message carrying the user identity used for registration to the MME;

after determining that the called terminal recovers the LTE data service, the MME notifies the location server, which specifically includes:

after receiving the second LTE data service recovery request message, the MME sends the second LTE data service recovery request message to the called terminal; and

and sending the LTE data service recovery confirmation message returned by the called terminal to the HSS.

6. The method of any of claims 2-4, wherein after the MME sends the second LTE data service barring request message to the called terminal, further comprising:

and the MME instructs a serving gateway S-GW to suspend the downlink data service of the called terminal.

7. The method of claim 6, wherein after the MME receives the second recover LTE data service request message and sends the second recover LTE data service request message to the called terminal, the method further comprises:

and the MME instructs the S-GW to recover the downlink data service of the called terminal.

8. A called voice service processing system based on multimode dual standby terminal is characterized by comprising a calling terminal, a called terminal, a mobile switching center MSC visited by the calling terminal, a location server visited by the called terminal, and a mobility management MME registered by the called terminal, wherein:

9. The system of claim 8 wherein said location server comprises a home register HLR and a home subscriber server HSS; wherein,

the HLR is used for sending a first LTE data service blocking request message carrying the first user identity identifier to the HSS after receiving the SRI message;

and the HSS is used for querying the MME registered by the called terminal and the user identity used for registration according to the first user identity after receiving the first LTE data service blocking request message.

10. The system of claim 9, wherein the MME is specifically configured to: after receiving the second LTE data service blocking request message, determining whether the called terminal is registered; if the user identity identifier is registered, forwarding the second LTE data service blocking request message to the called terminal, and sending the second LTE data service blocking request message carrying the user identity identifier used for registration to the HSS after receiving a second LTE data service blocking confirmation message returned by the called terminal; if not, sending the second LTE data service blocking confirmation message to the HSS;

the HSS is specifically configured to send, to the MME, a second LTE data service barring request message carrying the user identity used for registration; after receiving the second LTE data service blocking confirmation message, sending a first LTE data service blocking confirmation message carrying the first user identity identifier to the HLR;

the HLR is specifically configured to record the LTE data service barring status of the called terminal after receiving the first LTE data service barring acknowledgement message.

11. The system of claim 10, wherein the HSS is specifically configured to:

if the user identity used for registration is the first user identity, sending a second LTE data service blocking request message carrying the first user identity to the MME;

and if the user identity used for registration is inquired to be a second user identity associated with the first user identity, sending a second LTE data service blocking request message carrying the second user identity to the MME, wherein the called terminal simultaneously uses the first user identity and the second user identity.

12. The system according to any of claims 9 to 11, wherein the HLR is specifically configured to send, to the HSS, a first LTE data service resuming request message carrying the first subscriber identity after receiving the voice service end message sent by the MSC visited by the calling terminal;

the HSS is specifically configured to send, after receiving the first LTE data service restoration request message, a second LTE data service restoration request message carrying a user identity used for registration to the MME;

the MME is specifically configured to: after receiving the second LTE data service recovery request message, sending the second LTE data service recovery request message to the called terminal; and sending the LTE data service recovery confirmation message returned by the called terminal to the HSS.

13. The system of any of claims 9-11, wherein the MME is further configured to: and after the second LTE data service blocking request message is sent to the called terminal, the serving gateway S-GW suspends the downlink data service of the called terminal.

14. The system of claim 13, wherein the MME is further configured to recover the downlink data service of the called terminal by the S-GW after receiving the second recover LTE data service request message.

15. A called voice service processing method based on a multimode dual standby terminal is characterized by comprising the following steps:

16. The method of claim 15, wherein if the location server includes a home location register HLR and a home subscriber server HSS, the querying, by the location server to which the called terminal belongs, the MME registered by the called terminal according to the first subscriber identity after receiving an SRI message carrying the first subscriber identity of the called terminal and sent by an MSC visited by the calling terminal, specifically includes:

17. The method of claim 16, wherein the instructing the queried MME to notify the called terminal to suspend the LTE data service specifically includes:

after receiving a notification sent by the MME that the called terminal suspends the LTE data service, recording an LTE data service blocking status of the called terminal, specifically including:

after receiving a second LTE data service blocking confirmation message which is sent by the MME and carries the user identity used for registration, the HSS sends a first LTE data service blocking confirmation message which carries the first user identity to the HLR; the second LTE data service barring acknowledgement message is sent by the MME after the MME forwards the second LTE data service barring request message to the called terminal and receives the second LTE data service barring acknowledgement message carrying the user identity used for registration returned by the called terminal when the called terminal is registered; or, when the called terminal is not registered, the message is directly sent;

18. The method of claim 17, wherein the HSS sending a second LTE data service barring request message to the MME, the second LTE data service barring request message carrying a user identity used for registration of the called terminal, specifically comprises:

19. The method according to any one of claims 16 to 18, wherein after receiving a voice service end message carrying the first subscriber identity and sent by an MSC visited by the calling terminal, instructing the MME to notify the called terminal to resume the LTE data service specifically includes:

after receiving the first LTE data service recovery request message, the HSS sends a second LTE data service recovery request message carrying the user identity used for registration to the MME; receiving a LTE data service recovery confirmation message sent by the MME; the LTE data service recovery confirmation message is transmitted to the called terminal after the MME receives the second LTE data service recovery request message, and is forwarded after the LTE data service recovery confirmation message returned by the called terminal is received.

20. A location server, comprising:

21. The location server of claim 20, wherein said indicating unit comprises a home register HLR and a home subscriber server HSS; wherein,

22. The location server of claim 21, wherein the indicating unit is configured to instruct the queried MME to notify the called terminal to suspend LTE data services; the HSS is specifically configured to send, to the MME, a second LTE data service barring request message carrying the user identity used for registration;

the indicating unit is configured to record an LTE data service blocking status of the called terminal after receiving a notification that the MME determines that the called terminal suspends LTE data services; wherein,

the HSS is specifically configured to send, to the HLR, a first LTE data service barring acknowledgement message carrying the first subscriber identity after receiving a second LTE data service barring acknowledgement message carrying the subscriber identity used for registration sent by the MME; the second LTE data service barring acknowledgement message is sent by the MME after the MME forwards the second LTE data service barring request message to the called terminal and receives the second LTE data service barring acknowledgement message carrying the user identity used for registration returned by the called terminal when the called terminal is registered; or, when the called terminal is not registered, the message is directly sent;

23. The location server of claim 22, wherein the HSS is configured to send, to the MME, a second LTE data service barring request message carrying a user identity used for registration of the called terminal, and is specifically configured to:

24. The location server according to any of claims 24-26, wherein the instructing unit is configured to instruct, after the receiving unit receives the voice service end message, the MME to notify the called terminal to resume LTE data service; wherein,

the HLR is specifically configured to send a first LTE data service restoration request message carrying the first user identity to the HSS after receiving the voice service end message sent by the MSC visited by the calling terminal;

the HSS is specifically configured to send, after receiving the first LTE data service restoration request message, a second LTE data service restoration request message carrying a user identity used for registration to the MME; receiving a LTE data service recovery confirmation message sent by the MME; the LTE data service recovery confirmation message is transmitted to the called terminal after the MME receives the second LTE data service recovery request message, and is forwarded after the LTE data service recovery confirmation message returned by the called terminal is received.

25. A called voice service processing method based on a multimode dual standby terminal is characterized by comprising the following steps:

26. The method of claim 25, wherein the MME with which the called terminal is registered notifies the called terminal to suspend the LTE data service according to an indication sent by a location server to which the called terminal belongs, the indication notifying the called terminal to suspend the LTE data service, specifically comprising:

after receiving a second LTE data service blocking request message which is sent by the location server and carries a user identity used for the registration of the called terminal, determining whether the called terminal is registered; the user identity used for registration is found by the location server according to the first user identity;

if the user identity identifier is registered, forwarding the second LTE data service blocking request message to the called terminal, and sending the second LTE data service blocking request message carrying the user identity identifier used for registration to the location server after receiving a second LTE data service blocking confirmation message returned by the called terminal;

and if not, sending the second LTE data service blocking confirmation message to the location server.

27. The method according to any of claims 25 to 26, wherein notifying the location server after determining that the called terminal recovers the LTE data service, specifically comprises:

after receiving a second LTE data service recovery request message which is sent by the location server and carries the user identity used for registration, sending the second LTE data service recovery request message to the called terminal; and

and sending a LTE data service recovery confirmation message returned by the called terminal to the location server.

28. The method of any of claims 25-26, wherein after sending the second LTE data service barring request message to the called terminal, further comprising:

and indicating the service gateway S-GW to suspend the downlink data service of the called terminal.

29. The method of claim 28, wherein after receiving the second resume LTE data service request message and sending to the called terminal, further comprising:

and indicating the S-GW to recover the downlink data service of the called terminal.

30. A mobility management module, comprising:

31. The mobility management module according to claim 30, wherein the notification unit is specifically configured to:

32. The mobility management module according to any of claims 30 to 31, wherein the notification unit is specifically configured to:

33. The mobility management module according to any of claims 30-31, further comprising an instructing unit, configured to instruct a serving gateway S-GW to suspend downlink data traffic of the called terminal after the notifying unit sends the second LTE data traffic barring request message to the called terminal.

34. The mobility management module of claim 33, wherein the instructing unit is further configured to instruct the S-GW to resume the downlink data service of the called terminal after receiving the second LTE data service resumption request message and sending the message to the called terminal.

35. A called voice service processing method based on a multimode dual standby terminal is characterized by comprising the following steps:

36. The method of claim 35, wherein the MSC visited by the called terminal queries an MME registered by the called terminal according to the first subscriber identity, and if the MME is queried, the MME that is queried indicates to notify the called terminal to suspend the LTE data service, specifically including:

the MSC visited by the called terminal inquires whether the first user identity identification exists in the stored user identity identification corresponding to the LTE multimode dual standby terminal;

if the first user identity exists, determining that the terminal type of the called terminal is an LTE multi-mode dual-standby terminal;

inquiring the MME registered by the called terminal and a user identity used for registration in the stored position information of the visiting terminal;

and if the MME registered by the called terminal is inquired, sending a request message for stopping the LTE data service, which carries the user identity used for registration, to the inquired MME.

37. The method according to claim 36, wherein the process of the MSC visited by the called terminal storing the user identity corresponding to the LTE multimode dual standby terminal specifically includes:

after receiving an access request carrying a user identity identifier and LTE multimode dual-standby mode information, an MSC (mobile switching center) visited by the called terminal adds the user identity identifier to a user identity identifier corresponding to the LTE multimode dual-standby terminal;

the process of storing the location information of the called terminal by the MSC visited by the called terminal specifically includes:

if the called terminal is an LTE multimode dual-standby single-card terminal, after an MSC (mobile switching center) visited by the called terminal receives a first location updating request message carrying the first user identity identifier sent by the called terminal and a combined location updating request message carrying the first user identity identifier sent by an MME (mobility management entity) registered by the called terminal in sequence, the location area identifier LAI (location area identity) information of the first user identity identifier used by the called terminal and the registered MME are stored; the MME sends a second location update request carrying a joint location update identifier and the first user identity identifier to the MSC where the called terminal is located after receiving the second location update request carrying the joint location update identifier and the first user identity identifier sent by the called terminal or receiving the second location update request carrying the first user identity identifier sent by the called terminal;

if the called terminal is an LTE multimode dual-standby dual-card terminal, after an MSC (mobile switching center) visited by the called terminal receives a first location updating request message carrying the first user identity identifier and sent by the called terminal and a combined location updating request message carrying the second user identity identifier and sent by an MME (mobility management entity) registered by the called terminal, acquiring the association relationship between the first user identity identifier and the second user identity identifier from the HLR, and storing LAI (location identity information) information of the first user identity identifier used by the called terminal and the MME registered by the second user identity identifier associated with the first user identity identifier used by the called terminal; the combined location update request message is sent to an MSC where the called terminal is located by the MME after the MME receives a second location update request carrying a combined location update identity and the second subscriber identity sent by the called terminal or receives a second location update request carrying the second subscriber identity sent by the called terminal.

38. The method of claim 36, wherein the MSC visited by the called terminal sends a request message for blocking LTE data services to the queried MME, the request message carrying the user identity used for registration, specifically comprising:

if the MSC visited by the called terminal inquires that the user identity used for registration is the first user identity, sending a request message carrying the first user identity for preventing LTE data service to the MME;

if the MSC visited by the called terminal inquires that the user identity used for registration is a second user identity associated with the first user identity, sending a request message carrying the second user identity for preventing LTE data service to the MME, wherein the called terminal uses the first user identity and the second user identity simultaneously.

39. The method of claim 36, wherein the notifying, by the MME, the MSC that the called terminal visits after the called terminal determines that the LTE data service is suspended by the called terminal specifically includes:

after receiving the request message for preventing the LTE data service, the MME determines whether the called terminal is registered;

if the LTE data service is registered, forwarding the LTE data service blocking request message to the called terminal, and sending the LTE data service blocking request message carrying the user identity used for registration to an MSC visited by the called terminal after receiving the LTE data service blocking confirmation message returned by the called terminal;

and if not, sending the LTE data service blocking confirmation message to the MSC visited by the called terminal.

40. The method according to claim 39, wherein the MSC visited by the called terminal continues to perform the subsequent called voice service processing procedure, specifically comprising:

the MSC visited by the called terminal directly calls the called terminal; or

After the MSC visited by the called terminal delays for a set time length, calling the called terminal; or

And after receiving the LTE data service blocking confirmation message, the MSC visited by the called terminal calls the called terminal.

41. The method of claim 36, wherein the MSC visited by the called terminal instructs the MME to notify the called terminal to resume the LTE data service, specifically comprising:

the MSC visited by the called terminal sends a request message for recovering the LTE data service, which carries the user identity used for registration, to the MME;

after determining that the called terminal recovers the LTE data service, the MME notifies the MSC visited by the called terminal, which specifically includes:

after receiving the request message for recovering the LTE data service, the MME sends the request message to the called terminal; and

and sending a LTE data service recovery confirmation message returned by the called terminal to the MSC visited by the called terminal after receiving the LTE data service recovery confirmation message.

42. The method of any of claims 39-40, wherein after the MME sends the LTE data service barring request message to the called terminal, further comprising:

43. The method of claim 42, wherein after the MME receives the request message for recovering LTE data service and sends the request message to the called terminal, the method further comprises:

44. A called voice service processing system based on multimode dual standby terminal is characterized in that the system comprises a calling terminal, a called terminal, a Mobile Switching Center (MSC) visited by the calling terminal, a Home Location Register (HLR) to which the called terminal belongs, an MSC visited by the called terminal, and a mobile Management Module (MME) registered by the called terminal; wherein,

45. The system of claim 44, wherein the MSC visited by the called terminal is specifically configured to:

inquiring whether the first user identity exists in the stored user identity corresponding to the LTE multimode dual standby terminal;

46. The system according to claim 45, wherein the MSC visited by the called terminal is configured to store a user identity corresponding to the LTE multimode dual standby terminal, and is specifically configured to:

after receiving an access request carrying a user identity identifier and LTE multimode dual-standby mode information, adding the user identity identifier into a user identity identifier corresponding to an LTE multimode dual-standby terminal;

the MSC visited by the called terminal is configured to store the location information of the called terminal, and specifically configured to:

if the called terminal is an LTE multimode dual-standby single-card terminal, after a first position updating request message carrying the first user identity identifier and sent by the called terminal and a combined position updating request message carrying the first user identity identifier and sent by an MME registered by the called terminal are received in sequence, the LAI information of the position area identifier of the first user identity identifier and the registered MME used by the called terminal are saved; the MME sends a second location update request carrying a joint location update identifier and the first user identity identifier to the MSC where the called terminal is located after receiving the second location update request carrying the joint location update identifier and the first user identity identifier sent by the called terminal or receiving the second location update request carrying the first user identity identifier sent by the called terminal;

if the called terminal is an LTE multimode dual-standby dual-card terminal, after a first location updating request message carrying the first user identity and sent by the called terminal and a combined location updating request message carrying the second user identity and sent by an MME registered by the called terminal are received in sequence, acquiring the association relationship between the first user identity and the second user identity from the HLR, and storing LAI information of the first user identity used by the called terminal and the MME registered by the second user identity associated with the first user identity used by the called terminal; the combined location update request message is sent to an MSC where the called terminal is located by the MME after the MME receives a second location update request carrying a combined location update identity and the second subscriber identity sent by the called terminal or receives a second location update request carrying the second subscriber identity sent by the called terminal.

47. The system of claim 45, wherein the MSC visited by the called terminal is specifically configured to:

if the user identity used for registration is the first user identity, sending a request message carrying the first user identity for preventing LTE data service to the MME;

and if the user identity used for registration is inquired to be a second user identity associated with the first user identity, sending an LTE data service blocking request message carrying the second user identity to the MME, wherein the called terminal simultaneously uses the first user identity and the second user identity.

48. The system of claim 45, wherein the MME is specifically configured to:

after receiving the request message for preventing the LTE data service, determining whether the called terminal is registered;

49. The system of claim 48, wherein the MSC visited by the called terminal is specifically configured to:

directly calling the called terminal; or

After delaying the set time length, calling the called terminal; or

And calling the called terminal after receiving the LTE data service blocking confirmation message.

50. The system of claim 45, wherein the MSC visited by the called terminal is specifically configured to:

sending a request message for recovering LTE data service carrying the user identity used for registration to the MME;

the MME is specifically configured to: after receiving the request message for recovering the LTE data service, sending the request message to the called terminal; and sending a LTE data service recovery confirmation message returned by the called terminal to the MSC visited by the called terminal after receiving the LTE data service recovery confirmation message.

51. The system of any of claims 48-49, wherein the MME is further configured to instruct a serving gateway S-GW to suspend downlink data traffic for the called terminal after sending the LTE data traffic barring request message to the called terminal.

52. The system of claim 51, wherein the MME is further configured to instruct the S-GW to resume the downlink data service of the called terminal after receiving the request message for resuming the LTE data service and after sending the request message to the called terminal.

53. A called voice service processing method based on a multimode dual standby terminal is characterized by comprising the following steps:

54. The method of claim 53, wherein querying an MME registered by the called terminal according to the first subscriber identity, and if the MME is queried, indicating the queried MME to notify the called terminal to suspend the LTE data service specifically includes:

55. The method of claim 54, wherein the process of storing the user identity identifier corresponding to the LTE multimode dual standby terminal specifically comprises:

the process of storing the location information of the called terminal specifically includes:

if the called terminal is an LTE multimode dual-standby single-card terminal, after a first position updating request message carrying the first user identity identifier and sent by the called terminal and a combined position updating request message carrying the first user identity identifier and sent by an MME registered by the called terminal are received in sequence, the LAI information of the position area identifier of the first user identity identifier and the registered MME used by the called terminal are saved; the first combined location update request message is sent to an MSC where the called terminal is located by the MME after the MME receives a second location update request carrying a combined location update identity and the first subscriber identity sent by the called terminal or receives a second location update request carrying the first subscriber identity sent by the called terminal;

if the called terminal is an LTE multimode dual-standby dual-card terminal, after a fourth location updating request message carrying the first user identity and sent by an MME registered by the called terminal and a combined location updating request message carrying the second user identity and sent by the MME registered by the called terminal are received in sequence, acquiring the association relationship between the first user identity and the second user identity from the HLR, and storing LAI information of the first user identity used by the called terminal and the MME registered by the second user identity associated with the first user identity used by the called terminal; the combined location update request message is sent to an MSC where the called terminal is located by the MME after the MME receives a second location update request carrying a combined location update identity and the second subscriber identity sent by the called terminal or receives a second location update request carrying the second subscriber identity sent by the called terminal.

56. The method of claim 54, wherein sending a request message for blocking LTE data service to the queried MME, the request message carrying the user identity used for registration, specifically comprises:

57. The method of claim 54, wherein receiving the notification sent by the MME after determining that the called terminal suspends the LTE data service comprises:

receiving an LTE data service blocking confirmation message which is sent by the MME and carries the user identity used for registration;

wherein the LTE data service blocking acknowledgement message is: after determining that the called terminal is registered, the MME forwards the LTE data service blocking request message to the called terminal, and sends the LTE data service blocking request message after receiving the LTE data service blocking confirmation message returned by the called terminal; and the MME directly sends the information after determining that the called terminal is not registered.

58. The method of claim 57, wherein continuing the subsequent called voice service processing procedure, specifically comprises:

directly protecting and calling the called terminal; or

After delaying the set time length, calling the called terminal; or

59. The method of claim 54, wherein instructing the MME to notify the called terminal to resume LTE data services comprises:

receiving a notification sent by the MME after the called terminal determines that the LTE data service is restored, specifically including:

receiving a LTE recovery data confirmation message which is sent by the MME and carries the user identity used for registration;

the LTE data recovery confirmation message is sent to the called terminal after the MME receives the LTE data recovery service request message; and sending the LTE data service recovery confirmation message after receiving the LTE data service recovery confirmation message returned by the called terminal.

60. A mobile switching center, comprising:

61. The mobile switching center of claim 60, wherein the indication unit is specifically configured to:

62. The mobile switching center of claim 61, wherein the indicating unit is configured to store a user identity identifier corresponding to the LTE multimode dual standby terminal, and specifically, to add the user identity identifier to the user identity identifier corresponding to the LTE multimode dual standby terminal after receiving an access request carrying the user identity identifier and LTE multimode dual standby mode information;

the indicating unit is configured to store the location information of the called terminal, and specifically configured to: if the called terminal is an LTE multimode dual-standby single-card terminal, after a first position updating request message carrying the first user identity identifier and sent by the called terminal and a combined position updating request message carrying the first user identity identifier and sent by an MME registered by the called terminal are received in sequence, the LAI information of the position area identifier of the first user identity identifier and the registered MME used by the called terminal are saved; the first combined location update request message is sent to an MSC where the called terminal is located by the MME after the MME receives a second location update request carrying a combined location update identity and the first subscriber identity sent by the called terminal or receives a second location update request carrying the first subscriber identity sent by the called terminal; if the called terminal is an LTE multimode dual-standby dual-card terminal, after a fourth location updating request message carrying the first user identity and sent by an MME registered by the called terminal and a combined location updating request message carrying the second user identity and sent by the MME registered by the called terminal are received in sequence, acquiring the association relationship between the first user identity and the second user identity from the HLR, and storing LAI information of the first user identity used by the called terminal and the MME registered by the second user identity associated with the first user identity used by the called terminal; the combined location update request message is sent to an MSC where the called terminal is located by the MME after the MME receives a second location update request carrying a combined location update identity and the second subscriber identity sent by the called terminal or receives a second location update request carrying the second subscriber identity sent by the called terminal.

63. The mobile switching center of claim 61, wherein the indicating unit is configured to send an LTE blocking data service request message carrying a user identity used for the registration to the queried MME, and specifically is configured to:

64. The mobile switching center of claim 61, wherein the instructing unit is configured to receive a notification sent by the MME after the MME determines that the called terminal suspends the LTE data service, and specifically configured to:

65. The mobile switching center of claim 64, wherein the instructing unit is configured to continue a subsequent called voice service processing procedure, and specifically configured to:

directly calling the called terminal; or

After delaying the set time length, calling the called terminal; or

66. The mobile switching center of claim 61, wherein the instructing unit is configured to instruct the MME to notify the called terminal to resume the LTE data service, and specifically configured to:

the indicating unit is configured to receive a notification sent by the MME after the MME determines that the called terminal recovers the LTE data service, and specifically configured to: