WO2017054521A1 - 呼叫请求重定向方法、呼叫请求接续方法及其装置 - Google Patents

呼叫请求重定向方法、呼叫请求接续方法及其装置 Download PDF

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Publication number
WO2017054521A1
WO2017054521A1 PCT/CN2016/086260 CN2016086260W WO2017054521A1 WO 2017054521 A1 WO2017054521 A1 WO 2017054521A1 CN 2016086260 W CN2016086260 W CN 2016086260W WO 2017054521 A1 WO2017054521 A1 WO 2017054521A1
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Prior art keywords
user
msce
called user
location query
called
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PCT/CN2016/086260
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English (en)
French (fr)
Inventor
刘利锋
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中兴通讯股份有限公司
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Publication of WO2017054521A1 publication Critical patent/WO2017054521A1/zh

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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W4/00—Services specially adapted for wireless communication networks; Facilities therefor
    • H04W4/16—Communication-related supplementary services, e.g. call-transfer or call-hold
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W68/00—User notification, e.g. alerting and paging, for incoming communication, change of service or the like
    • H04W68/02—Arrangements for increasing efficiency of notification or paging channel

Definitions

  • This document relates to, but is not limited to, the field of communication technologies, and in particular, to a call request redirection method, a call request connection method and a device thereof.
  • CDMA Code Division Multiple Access
  • LTE Long Term Evolution
  • EPC Evolved Packet Core
  • IMS IP Multimedia Subsystem
  • IP Multimedia IP Multimedia
  • the fourth generation mobile communication system (4G) and the second generation mobile communication system (2G)/third generation mobile communication system (3G) network will inevitably face the problem of long-term coexistence.
  • IMS domain In the telecommunication network, there are two service domains (IMS domain, CDMA CS domain) to provide voice services, and two access domains (IMS domain, CS domain) can initiate or receive voice calls.
  • IMS domain When a general user activates VoLTE, the mobile phone number in the CDMA network is usually used. Therefore, the network must select a certain service domain (IMS domain or CS domain) for the user to provide voice services.
  • the VoLTE terminal may select one of the access domains (IMS domain or CS domain) to register or initiate a voice call, and the network also needs to select an access domain (IMS domain or CS domain) for the called user to receive the call.
  • IMS domain or CS domain access domain
  • the user In the process of establishing a call, the user must select a service domain. This problem must be solved when IMS is used as a VoLTE solution.
  • the 3GPP protocol does not explicitly define a voice solution when two networks of CDMA and IMS coexist.
  • the existing solution mainly adopts two paging methods, first attempting to page the called user in the calling domain, such as the paging is unsuccessful. , and then try to page the user in another domain.
  • the paging delay is long and the efficiency is low, which may cause the user to fail the paging and the user experience is poor.
  • the present invention provides a call request redirection method, a call request connection method and a device thereof, to at least solve the problem of low efficiency of paging a called user when two networks of CDMA and IMS coexist in the related art.
  • An embodiment of the present invention provides a call request redirection method, including: a home location query device of a called user receives a first location query request sent by a mobile switching center emulation (MSCe) of a calling user; and the home location query device Determining whether the called user is a VoLTE user; if it is determined that the called user is a VoLTE user, the home location querying device sends a first location query response to the MSCe of the calling user, where The first location query response carries the routing information of the IP Multimedia Subsystem (IMS) network, and the first location query response is used to indicate that the MSCe of the calling user redirects the call request to the location by using the routing information.
  • IMS IP Multimedia Subsystem
  • the home location query device includes one of: Home Location Register Emulation (HLRe), Home Subscribed Service Server (HSS).
  • HHo Home Location Register Emulation
  • HSS Home Subscribed Service Server
  • the method further includes: a service continuity server (SCC AS) of the IMS network via a service a call session control function (S-CSCF) receiving a first call request sent by the calling user's MSCe; the SCC AS determining a network currently registered by the called user; the SCC AS according to the called user The currently registered network performs a connection operation on the first call request sent by the calling user's MSCe.
  • SCC AS service continuity server
  • S-CSCF service a call session control function
  • the SCC AS determines a network that is currently registered by the called user, and according to the The splicing operation of the first call request sent by the MSCe of the calling user by the network currently registered by the called user includes: the SCC AS determining that the network currently registered by the called user is a CDMA network; the SCC AS The MSCe simulating the calling subscriber or the calling location register (VLR) of the calling subscriber interacts with the home location querying device to page the called subscriber.
  • VLR calling location register
  • the SCC AS simulates that the MSCe of the calling user or the VLR of the calling user interacts with the home location querying device to page the called user, and the SCC AS sends the second a location query request to the home location query device; the home location query device sends a first routing request to the MSCe of the called user; and the home location query device receives the MSCe of the called user in response to the a first routing response of the routing request, wherein the first routing response carries a temporary local number of the called user; the home location querying device sends a second location query response carrying the temporary local number Responding to the second location query request to the SCC AS, wherein the second location query response carries the temporary local number; the SCC AS sends a second call carrying the temporary local number Requesting to the S-CSCF; the S-CSCF sends a third call request carrying the temporary local number to the MSCe of the called user; the MSCe of the called user is according to the Local paging the called subscriber number.
  • the SCC AS determines a network that is currently registered by the called user, and performs a connection operation on the first call request sent by the MSCe of the calling user according to the network currently registered by the called user.
  • the SCC AS determines that the network currently registered by the called user is an IMS network; the SCC AS sends a fourth call request to the called user to page the called user.
  • the method further includes: the home location querying device sending another request in response to the first location query request a first location query response to the MSCe of the calling user, wherein the another first location query response is used to indicate that the MSCe of the calling user sends a third location query request to the home location query device;
  • the home location querying device receives the third location query request sent by the MSCe of the calling user;
  • the home location querying device sends a second routing request to the MSCe of the called user;
  • the home location querying device Receiving the called user's
  • the MSCe is responsive to the second routing response of the second routing request, where the second routing response carries the temporary local number of the called user;
  • the home location querying device sends the temporary local number
  • the third location query is responsive to the MSCe of the calling user in response to the third location query request, wherein the temporary local number is used by the MSCe of the calling user to the MSC
  • the embodiment of the present invention further provides a call request connection method, including: a service continuity server (SCC AS) of an IMS network receives a first call request of a calling user via a service-call session control function (S-CSCF); The SCC AS determines the network currently registered by the called user; the SCC AS performs a connection operation on the first call request sent by the calling user according to the network currently registered by the called user.
  • SCC AS service continuity server
  • S-CSCF service-call session control function
  • the SCC AS determines a network that is currently registered by the called user, and performs a connection operation on the first call request sent by the MSCe of the calling user according to the network currently registered by the called user.
  • the SCC AS determines that the network currently registered by the called user is a CDMA network; the SCC AS simulates the MSCe of the calling user or the visitor location register (VLR) of the calling user and the called user
  • the home location queries the device interaction to page the called user.
  • the home location query device includes one of: Home Location Register Emulation (HLRe), Home Subscribed Service Server (HSS).
  • HHo Home Location Register Emulation
  • HSS Home Subscribed Service Server
  • the SCC AS simulates that the MSCe of the calling user or the VLR of the calling user interacts with the home location querying device to page the called user, and the SCC AS sends the second a location query request to the home location query device; the home location query device sends a first routing request to the MSCe of the called user; and the home location query device receives the MSCe of the called user in response to the a first routing response of the routing request, wherein the first routing response carries a temporary local number of the called user; the home location querying device sends a second location query response carrying the temporary local number Responding to the second location query request to the SCC AS, wherein the second location query response carries the temporary local number; the SCC AS sends a second call carrying the temporary local number Requesting to the S-CSCF; the S-CSCF sends a third call request carrying the temporary local number to the MSCe of the called user; the MSCe of the called user is according to the The local paging number The called user.
  • the SCC AS determines a network that is currently registered by the called user, and performs a connection operation on the first call request sent by the MSCe of the calling user according to the network currently registered by the called user.
  • the SCC AS determines that the network currently registered by the called user is an IMS network; the SCC AS sends a fourth call request to the called user to page the called user.
  • the embodiment of the present invention further provides a call request redirection device, which is applied to a home location query device of a called user, and includes: a first receiving module, configured to receive a mobile switching center emulation (MSCe) sent by the calling user. a location query request; the determining module is configured to determine whether the called user is a VoLTE user; and the first sending module is configured to send the first location query response to the case that the called user is a VoLTE user
  • the MSCe of the calling user wherein the first location query response carries routing information of the IMS network, and the first location query response is used to indicate that the MSCe of the calling user places the call by using the routing information. Request to redirect to the IMS network.
  • the home location query device includes one of the following: a home location register emulation HLRe, and a home subscription service server HSS.
  • the device further includes: a second sending module, configured to send another response in response to the first location query request if the determining module determines that the called user is a non-VoLTE user
  • the first location query is responsive to the MSCe of the calling user, wherein the another first location query response is used to indicate that the MSCe of the calling user sends a third location query request to the home location query device; a receiving module, configured to receive the third location query request sent by the MSCe of the calling user, and a third sending module, configured to send a second routing request to the MSCe of the called user, and a third receiving module, a second routing response that is configured to receive the MSCe of the called user in response to the second routing request, where the second routing response carries a temporary local number of the called user; and a fourth sending module, Arranging to send a third location query response carrying the temporary local number to the MSCe of the calling user in response to the third location query request, wherein the temporary local number MSCe to the calling user to the
  • the embodiment of the invention further provides a call request connection device, which is applied to the service of the IMS network.
  • a continuity server SCC AS comprising: a fourth receiving module, configured to receive a first call request of the calling user via the service-call session control function S-CSCF; and a determining module configured to determine a network currently registered by the called user And a connection module, configured to perform a connection operation on the first call request sent by the calling user according to the network currently registered by the called user.
  • the determining module is configured to determine that the network currently registered by the called user is a CDMA network
  • the connection module is configured to simulate an MSCe of the calling user or a visitor location register of the calling user.
  • the VLR interacts with the called subscriber's home location querying device to page the called subscriber.
  • the home location query device includes one of the following: a home location register emulation HLRe, and a home subscription service server HSS.
  • the determining module is configured to determine that the network currently registered by the called user is an IMS network, and the connection module is configured to send a fourth call request to the called user to page the Call the user.
  • the embodiment of the invention further provides a computer readable storage medium storing computer executable instructions, which are implemented when executed by a processor.
  • the home location query device of the called user receives the first location query request sent by the mobile switching center of the calling user to simulate the MSCe; the home location querying device determines whether the called user is a VoLTE user; In the case that the user is a VoLTE user, the home location querying device sends a first location query response to the MSCe of the calling user, where the first location query response carries routing information of the IMS network, and the first location query response is used to indicate
  • the method of redirecting the call request to the IMS network by the routing information of the calling user's MSCe solves the problem of low efficiency of paging the called user when the two networks of CDMA and IMS coexist, and improves the efficiency of paging the called user. .
  • FIG. 1 is a flowchart of a call request redirection method according to an embodiment of the present invention
  • FIG. 2 is a flowchart of a call request connection method according to an embodiment of the present invention.
  • FIG. 3 is a structural block diagram of a call request redirection apparatus according to an embodiment of the present invention.
  • FIG. 4 is a block diagram showing an optional structure of a call request redirection apparatus according to an embodiment of the present invention.
  • FIG. 5 is a structural block diagram of a call request splicing apparatus according to an embodiment of the present invention.
  • FIG. 6 is a flow chart of making a called service on a CDMA network when a VoLTE subscriber is registered in a CDMA network according to an alternative embodiment of the present invention
  • FIG. 7 is a flowchart of making a called service on a CDMA network when a VoLTE user registers with an LTE network according to an alternative embodiment of the present invention
  • FIG. 8 is a flow chart of making a called service on a CDMA network when a CDMA user registers with a CDMA network according to an alternative embodiment of the present invention
  • FIG. 9 is a flow chart of making a called service on an IMS network when a called user registers with a CDMA network according to an alternative embodiment of the present invention.
  • FIG. 1 is a flowchart of a call request redirection method according to an embodiment of the present invention. As shown in FIG. 1, the process includes the following steps:
  • Step S102 the home location query device of the called user receives the first location query request sent by the mobile switching center emulation (MSCe) of the calling user;
  • MSCe mobile switching center emulation
  • Step S104 the called user's home location querying device determines whether the called user is VoLTE. user;
  • Step S106 in the case that it is determined that the called user is a VoLTE user, the home location querying device of the called user sends a first location query response to the MSCe of the calling user, where the first location query response carries the IMS network. Routing information, the first location query response is used to indicate that the MSCe of the calling user redirects the call request to the IMS network through the routing information.
  • the home location querying device determines that the called user belongs to the VoLTE user, then the called user may be considered to have already registered in the IMS domain.
  • the called user is anchored to the IMS network for paging process, so that a paging process can be used to page the called user, which saves the process of paging the called user on the CS network.
  • the foregoing home location querying device is a device that can directly or indirectly query the service attribute of the called user, such as a state of a VoLTE service, including but not limited to: a home location register emulation of the called user (HLRe) ) or the called subscriber's home subscription service server (HSS).
  • HLRe home location register emulation of the called user
  • HSS home subscription service server
  • the SCC AS receives the first call request sent by the calling user's MSCe via a service-call session control function (S-CSCF);
  • S-CSCF service-call session control function
  • the SCC AS determines the network currently registered by the called user; the SCC AS performs a connection operation on the first call request sent by the calling party's MSCe according to the network currently registered by the called user.
  • the determining strategy for the network currently registered by the called user includes:
  • the SCC AS simulates the MSCe of the calling user or the calling location register (VLR) of the calling user interacts with the home location query device to search for Call the called user.
  • VLR calling location register
  • the SCC AS simulates that the MSCe of the calling user or the VLR of the calling user interacts with the home location querying device to page the called user, including the following process:
  • the SCC AS sends a second location query request to the home location query device
  • the home location querying device sends the first routing request to the MSCe of the called user;
  • the home location querying device receives the first routing response of the MSCe of the called user in response to the first routing request, where the first routing response carries the temporary local number of the called user;
  • the home location query device sends a second location query response carrying the temporary local number to the SCC AS, in response to the second location query request, where the second location query response carries the temporary local number;
  • the SCC AS sends a second call request carrying the temporary local number to the S-CSCF;
  • the S-CSCF sends a third call request carrying the temporary local number to the MSCe of the called user;
  • the called subscriber's MSCe pages the called subscriber based on the temporary local number.
  • the SCC AS sends a fourth call request to the called user to page the called user.
  • the paging may be performed according to a process of a normal CS network user (for example, a normal CDMA network user of the non-VoLTE user), for example:
  • the home location querying device sends another first location query response responsive to the first location query request to the MSCe of the calling user, wherein another first location query response is used to indicate that the MSCe of the calling user sends the third location query request Query the device to the home location;
  • the home location querying device receives the third location query request sent by the MSCe of the calling user;
  • the home location querying device sends a second routing request to the MSCe of the called user;
  • the home location querying device receives the second routing response of the MSCe of the called user in response to the second routing request, where the second routing response carries the temporary local number of the called user;
  • the home location querying device sends a third location query response carrying the temporary local number to the MSCe of the calling user, in response to the third location query request, wherein the temporary local number is used by the MSCe of the calling user to find the MSCe of the called user. Call the called user.
  • FIG. 2 is a flowchart of a call request connection method according to an embodiment of the present invention. As shown in FIG. 2, the process includes the following steps:
  • Step S202 the SCC AS receives the first call request of the calling user via the service-call session control function S-CSCF;
  • Step S204 the SCC AS determines the network that the called user is currently registered with
  • Step S206 The SCC AS performs a connection operation on the first call request sent by the calling user according to the network currently registered by the called user.
  • the SCC AS determines the network currently registered by the called user, and performs a connection operation on the first call request sent by the calling user according to the network currently registered by the called user. Since the SCC AS can know the registration status of the called user, the SCC AS can page the called user according to the called user's call to the called user selected in the CS network or the registration status of the IMS network, thereby implementing the called user.
  • the paging of the called user can be realized by a paging process.
  • the SCC AS determines that the network currently registered by the called user is a CDMA network
  • the SCC AS simulates the calling party's MSCe or the calling user's visited location register VLR to interact with the called user's home location querying device. To page the called user.
  • the foregoing home location query device includes, but is not limited to, one of the following: a home location register emulation HLRe, and a home subscription service server HSS.
  • the SCC AS simulates that the MSCe of the calling user or the VLR of the calling user interacts with the home location querying device to page the called user, including:
  • the SCC AS sends a second location query request to the home location query device
  • the home location querying device sends the first routing request to the MSCe of the called user;
  • the home location querying device receives the first routing response of the MSCe of the called user in response to the first routing request, where the first routing response carries the temporary local number of the called user;
  • the home location query device sends a second location query response carrying the temporary local number to the SCC AS, in response to the second location query request, where the second location query response carries the temporary local number;
  • the SCC AS sends a second call request carrying the temporary local number to the S-CSCF;
  • the S-CSCF sends a third call request carrying the temporary local number to the MSCe of the called user;
  • the called subscriber's MSCe pages the called subscriber based on the temporary local number.
  • the SCC AS determines that the network currently registered by the called user is an IMS network
  • the SCC AS sends a fourth call request to the called user to page the called user.
  • the method according to the above embodiment can be implemented by means of software plus a necessary general hardware platform, and of course, by hardware, but in many cases, the former is A better implementation.
  • the technical solution of the present invention which is essential or contributes to the prior art, may be embodied in the form of a software product stored in a storage medium (such as ROM/RAM, disk,
  • the optical disc includes a number of instructions for causing a terminal device (which may be a cell phone, a computer, a server, or a network device, etc.) to perform the methods described in various embodiments of the present invention.
  • a call request redirection device is also provided, which is applied to the home location query device of the called user.
  • the device is used to implement the foregoing embodiments and preferred embodiments, and details are not described herein.
  • the term "module” may implement a combination of software and/or hardware of a predetermined function.
  • the apparatus described in the following embodiments is preferably implemented in software, hardware, or a combination of software and hardware, is also possible and contemplated.
  • FIG. 3 is a structural block diagram of a call request redirection apparatus according to an embodiment of the present invention. As shown in FIG. 3, the apparatus includes: a first receiving module 32, a judging module 34, and a first sending module 36, where
  • the first receiving module 32 is configured to receive a first location query request sent by the mobile switching center emulation MSCe of the calling user;
  • the determining module 34 is coupled to the first receiving module 32 and configured to determine whether the called user is a VoLTE user.
  • the first sending module 36 is coupled to the determining module 34, and configured to send the first location query response to the MSCe of the calling user if the called user is a VoLTE user, where the first location query response carries The routing information of the IMS network, the first location query response is used to indicate that the MSCe of the calling user redirects the call request to the IMS network through the routing information.
  • the home location query device includes, but is not limited to, one of the following: a home location register emulation HLRe, a home subscription service server HSS.
  • FIG. 4 is a block diagram showing an optional structure of a call request redirection apparatus according to an embodiment of the present invention. As shown in FIG. 4, the apparatus further includes:
  • the second sending module 42 is coupled to the determining module 34, and configured to send another first location query response to the calling user in response to the first location query request if the determining module determines that the called user is a non-VoLTE user. MSCe, wherein another first location query response is used to indicate that the MSCe of the calling user sends a third location query request to the home location querying device;
  • the second receiving module 44 is coupled to the second sending module 42 and configured to receive a third location query request sent by the MSCe of the calling user.
  • the third sending module 46 is coupled to the second receiving module 44, and configured to send a second routing request to the MSCe of the called user.
  • the third receiving module 48 is coupled to the third sending module 46, and configured to receive the second routing response of the MSCe of the called user in response to the second routing request, where the second routing response carries the temporary local number of the called user. ;
  • the fourth sending module 49 is coupled to the third receiving module 48 and configured to send a third location query response carrying the temporary local number to the calling party's MSCe in response to the third location query request, wherein the temporary local number is used for The calling subscriber's MSCe pages the called subscriber to the called subscriber's MSCe.
  • a call request connection device is also provided, which is applied to the service of the IMS network.
  • the Continuity Server (SCC AS), which is used to implement the above embodiments and preferred embodiments, has not been described again.
  • SCC AS Continuity Server
  • module may implement a combination of software and/or hardware of a predetermined function.
  • FIG. 5 is a structural block diagram of a call request splicing apparatus according to an embodiment of the present invention. As shown in FIG. 5, the apparatus includes: a fourth receiving module 52, a determining module 54, and a splicing module 56, where
  • the fourth receiving module 52 is configured to receive a first call request of the calling user via the service-call session control function S-CSCF;
  • a determining module 54 coupled to the fourth receiving module 52, configured to determine a network currently registered by the called user
  • connection module 56 is coupled to the determining module 54 and configured to perform a connection operation on the first call request sent by the calling user according to the network currently registered by the called user.
  • the determining module 54 is configured to determine that the network currently registered by the called user is a CDMA network; the connection module 56 is configured to simulate the MSCe of the calling user or the visited location register VLR of the calling user and the home location of the called user. Query device interaction to page the called user.
  • the home location query device includes, but is not limited to, one of the following: a home location register emulation HLRe, a home subscription service server HSS.
  • the determining module 54 is configured to determine that the network currently registered by the called user is an IMS domain, and the connection module 56 is configured to send a fourth call request to the called user to page the called user.
  • Embodiments of the present invention also provide a software for performing the technical solutions described in the above embodiments and preferred embodiments.
  • Embodiments of the present invention also provide a storage medium.
  • the above storage medium may be configured to store program code for performing the following steps:
  • Step S102 the home location query device of the called user receives the first location query request sent by the mobile switching center emulation MSCe of the calling user;
  • Step S104 The home location querying device determines whether the called user is a VoLTE user.
  • Step S106 in the case that it is determined that the called user is a VoLTE user, the home location querying device sends the first location query response to the MSCe of the calling user, where the first location query response carries the routing information of the IMS network, A location query response is used to indicate that the MSCe of the calling user redirects the call request to the IMS network through the routing information.
  • Embodiments of the present invention also provide a storage medium.
  • the above storage medium may be configured to store program code for performing the following steps:
  • Step S202 the SCC AS receives the first call request of the calling user via the service-call session control function S-CSCF;
  • Step S204 the SCC AS determines the network that the called user is currently registered with
  • Step S206 The SCC AS performs a connection operation on the first call request sent by the calling user according to the network currently registered by the called user.
  • the foregoing storage medium may include, but is not limited to, a USB flash drive, a Read-Only Memory (ROM), and a Random Access Memory (RAM).
  • ROM Read-Only Memory
  • RAM Random Access Memory
  • An alternative embodiment of the present invention is exemplified by a scenario in which two networks of CDMA and IMS coexist, and the technical solution provided by the embodiment of the present invention may be applied to the scenario where the other CS network and the IMS network coexist. To improve the paging efficiency.
  • An alternative embodiment of the present invention provides a method for implementing service domain selection when deploying VoLTE based on a CDMA network, which belongs to Long Term Evolution (LTE)/Evolved Packet Core (EPC) mobile communication.
  • Field is a business domain selection
  • SDS Service Domain select
  • a VoLTE service is deployed on a CDMA network, and the called user can attach to the CS network or attach to the IMS network.
  • the paging delay is long, and the paging failure of the user is easy to occur, and the user experience is very poor.
  • the method for implementing the service domain selection of the VoLTE user in the terminal call when the VoLTE is deployed based on the CDMA network includes:
  • the HLRe/Converged HSS Home Signing Service Server
  • the called user where the called user is located signs a special indication to distinguish whether the user is a normal CDMA user or a VoLTE user;
  • the HLRe returns a specific indication, instructing the MSCe to anchor the user's called to the IMS network
  • the SCC AS When the SCC AS receives the Invite request (equivalent to the above call request), it can support the access domain selection for the CDMA network and the IMS network, and determine the network that the called user currently registers.
  • the SCC AS When the SCC AS determines that the user is registered in the CDMA network, it can play the role of the Mobile Switching Center/Visitor Location Register (MSCe/VLR) in the CDMA network, and query the HLRe for routing information to complete the connection. ;
  • MSCe/VLR Mobile Switching Center/Visitor Location Register
  • the method for selecting a service domain for a VoLTE user can accurately select a registration domain where the user is located as a terminating domain, thereby improving the success rate of the user voice service and enhancing the user. Voice service experience on VoLTE networks.
  • An alternative embodiment of the present invention provides a method for implementing a CDMA deployment VoLTEV network service domain selection, that is, a CDMA/VoLTE multi-mode user, and a method for anchoring a CDMA called domain service to an IMS network.
  • the method for deploying a VoLTE network service domain of the CMDA according to the present invention can be applied to the field of mobile communications.
  • the VoLTE called user when the VoLTE called user is registered in the CDMA network, if the calling user performs the called service on the CDMA network, the called user is triggered to anchor to the IMS network for service domain selection.
  • a network element such as an HLRe or an SCC AS and another network element entity are handed in.
  • the steps include the following steps:
  • Step S601 the calling user A initiates a call, and calls the called user B;
  • Step S602 The CDMA MSCe receives a call request from the user, and initiates a location query request to the HLRe where the called user is located.
  • the HLRe determines whether the current called user is a VoLTE user. If the called user is a VoLTE user, the routing information is returned to the MSCe, and the format is optionally Prefix+MDN, where the Prefix is the routing code of the IMS network, and the MDN is The mobile subscriber directory number of the called subscriber B.
  • Step S604 after receiving the routing code returned by the HLRe, the MSCe redirects the call to the S-CSCF of the IMS network according to the routing information returned by the HLRe.
  • Step S605 the S-CSCF initiates an Invite request (equivalent to a call request) to the SCC AS, and carries the called number B.
  • Step S606 after the SCC AS performs the final call domain selection, it determines that the called user B is registered in the CDMA network, and the SCC AS simulates the MSCe-A to initiate a location query request to the HLRe, and the request carries the trigger code (Trigtype) to 34 (location);
  • Step S607 the HLRe receives the location query request of the SCC AS, and initiates a routing request (RouteReq) to the MSCe currently registered by the called user, requesting the TLDN;
  • Step S608 after receiving the routing request, the MSCe-B returns the TLDN number.
  • Step S609 HLRe returns the TLDN number to the SCC AS by using LocReq (corresponding to the location query response);
  • Step S610 the SCC AS returns a TLDN number to the S-CSCF.
  • Step S611 the S-CSCF initiates an invite request to the MSCe where the called user is located according to the TLDN number.
  • Step S612 the called MSCe-B initiates a paging to the called user to complete the call.
  • step S603 if the MSCe requests the terminal list (TL) parameter in the service processing capability (TranCapa) parameter in the LocReq to be 1, the returned response is placed in the public switched telephone network (PSTN) in the response of the Prxfix+MDN. Terminal (PSTNTermination) In the parameter; if MSCe requests TL in the TranCapa parameter in LOCREQ to be 0, then in the returned response, the Prxfix+MDN number is placed in the Destination Digits parameter.
  • PSTN public switched telephone network
  • the called user when the called user registers in the IMS network, if the calling user performs the called service on the CDMA network, the called user is triggered to anchor to the IMS network for service domain selection.
  • the interaction between the network element such as the HLRe and the SCC AS and other network element entities includes the following steps:
  • Step S701 the calling user A initiates a call, and calls the called user B;
  • Step S702 the CDMA MSCe-A receives the call request from the user, and initiates a location query request to the HLRe where the called user is located;
  • step S703 the HLRe determines whether the current user is a VoLTE user. If the user is VoLTE, the routing information is returned to the MSCe in the format of Prefix+MDN, where the Prefix is the routing code of the IMS network.
  • Step S704 after receiving the routing code returned by the HLRe, the MSCe-A redirects the call to the S-CSCF of the IMS network according to the routing information returned by the HLRe.
  • Step S705 The S-CSCF initiates an Invite request to the SCC AS, carrying the called number B.
  • Step S706 after the SCC AS performs the terminal call domain selection, it determines that the called user B is registered in the IMS network, and initiates paging to the called user to complete the current call.
  • step S703 if the MSCe requests the TL in the TranCapa parameter in the LocReq to be 1, the Prxfix+MDN number is placed in the PSTNTermination parameter in the returned response; if the MSCe requests the TL in the TranCapa parameter in the LOCREQ to be 0, In the response returned, the Prxfix+MDN number is placed in the Destination Digits parameter.
  • the network element such as HLRe, MSCe, and other network element entities
  • the interaction includes the following steps:
  • Step S801 the calling user A initiates a call on the CDMA network, and calls the called user B;
  • Step S802 the CDMA MSCe-A receives the call request from the user, and initiates a location query request to the HLRe where the called user is located;
  • Step S803 the HLRe determines whether the current user is a VoLTE user, and if the user is not VoLTE, returns the intelligent network subscription information to the MSCe.
  • Step S804 after receiving the signing of the intelligent network returned by the HLRe, the MSCe-A sends a location request to the HLRe again after triggering the request to the intelligent network;
  • Step S805 the HLRe initiates a RouteReq request to the MSCe-B where the called party is located;
  • Step S806 MSCe-B returns the corresponding TLDN to HLRe;
  • Step S807 the HLRe brings the TLDN back to the calling MSCe-A according to the response returned by the MSCe-B.
  • Step S808 the calling party MSCe completes the voice call.
  • the anchoring to the IMS network is triggered for the service domain selection.
  • the interaction between the network element such as the HLRe and the SCC AS and other network element entities includes the following steps:
  • Step S901 the calling user A initiates a call on the IMS network, and calls the user B;
  • Step S902 the IMS S-CSCF receives the call request from the user, initiates an Invite request to the SCC AS, and carries the called B number.
  • Step S903 the SCC AS performs a final call domain selection.
  • Step S904 the SCC AS determines that the called user B is registered in the CDMA network, and the simulated MSCe/VLR sends a LOCREQ to the HLRe where the called user is located, requesting the called routing number;
  • Step S905 the HLRe receives the location request of the SCC AS, and initiates a RouteReq to the MSCe-B registered by the current user, requesting the TLDN;
  • Step S906 after receiving the routing request, the MSCe-B returns the TLDN number.
  • Step S907 the HLRe returns a TLDN number to the SCC AS by responding to the LocReq;
  • Step S908 the SCC AS returns a TLDN number to the S-CSCF;
  • Step S909 the S-CSCF initiates an invite request to the MSCe-B where the called user is located according to the TLDN number.
  • Step S910 the called MSCe-B initiates a paging to the called user to complete the call.
  • each module/unit in the above embodiment may be implemented in the form of hardware, for example, by implementing an integrated circuit to implement its corresponding function, or may be implemented in the form of a software function module, for example, executing a program stored in the memory by a processor. Instructions to achieve their corresponding functions. This application is not limited to any specific combination of hardware and software.
  • the home location query device of the called user receives the first location query request sent by the mobile switching center of the calling user to simulate the MSCe; the home location querying device determines whether the called user is a VoLTE user; When the called user is a VoLTE user, the home location query device sends a first location query response to the MSCe of the calling user, where the first location query response carries the routing information of the IMS network, and the first location query response is used.
  • the MSCe indicating the calling user redirects the call request to the IMS network through the routing information.

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Abstract

本文公开了一种呼叫请求重定向方法，包括：被叫用户的归属位置查询设备接收主叫用户的移动交换中心仿真MSCe发送的第一位置查询请求；归属位置查询设备判断被叫用户是否为VoLTE用户；在判断到被叫用户为VoLTE用户的情况下，归属位置查询设备发送第一位置查询响应至主叫用户的MSCe，其中，第一位置查询响应中携带有IMS网络的路由信息，第一位置查询响应用于指示主叫用户的MSCe通过路由信息将呼叫请求重定向至IMS网络。

Description

呼叫请求重定向方法、呼叫请求接续方法及其装置 技术领域
本文涉及但不限于通信技术领域，尤其涉及的是一种呼叫请求重定向方法、呼叫请求接续方法及其装置。
背景技术
码分多址接入(Code Division Multiple Access，简称为CDMA)技术是第三代移动通信系统中的一种重要的技术标准。目前在北美、中国以及亚洲一些国家都建立了CDMA商用网络。
演进到第四代无线数据网络(即LTE(Long Term Evolution，长期演进)/EPC(Evolved Packet Core，核心分组网演进))对运营商来说，是大势所趋。据统计，目前全球有100多个运营商开通了LTE商用业务。在LTE/EPC网络演进中，3GPP(3rd Generation Partnership Project，第三代合作伙伴计划)和GSMA(Global System for Mobile Communications Alliance,全球移动通信系统联盟)都明确采用IMS(IP Multimedia Subsystem，是IP多媒体子系统)网络向用户提供基于LTE的语音业务(Voice over LTE，简称为VoLTE)服务，美国Verizon、日本KDDI、香港电讯盈科(PCCW)等相继宣布在2014年正式商用VoLTE。
网络演进到VoLTE过程中，第四代移动通信系统(4G)和第二代移动通信系统(2G)/第三代移动通信系统(3G)网络必然会面临长期共存的问题。电信网络中就同时存在两个业务域(IMS域、CDMA CS域)来提供语音业务，也有两个接入域(IMS域、CS域)可以来发起或接收语音呼叫。一般用户开通VoLTE时，通常会继续使用CDMA网络中手机号码，因此网络必须为用户选择某一个业务域(IMS域或CS域)来提供语音业务。VoLTE终端可以选择某一个接入域(IMS域或CS域)来注册或发起语音呼叫，而网络也需要替被叫用户选择一个接入域(IMS域或CS域)来接收呼叫。在用户建立呼叫的过程中，必须要选择一个业务域，这个问题是IMS作为VoLTE方案时必须要解决的。
3GPP协议没有明确定义CDMA和IMS两个网络共存时的语音解决方案，现有的解决方案主要是采用两次寻呼的方式，首先尝试在起呼域寻呼被叫用户，如寻呼不成功，再到另外一个域尝试寻呼用户。这种解决方案，寻呼时延比较长，效率低下，易导致用户寻呼失败，用户体验很差。
发明内容
以下是对本文详细描述的主题的概述。本概述并非是为了限制权利要求的保护范围。
本文提供了一种呼叫请求重定向方法、呼叫请求接续方法及其装置，以至少解决相关技术中在CDMA和IMS两个网络共存时寻呼被叫用户的效率低的问题。
本发明实施例提供了一种呼叫请求重定向方法，包括：被叫用户的归属位置查询设备接收主叫用户的移动交换中心仿真(MSCe)发送的第一位置查询请求；所述归属位置查询设备判断所述被叫用户是否为VoLTE用户；在判断到所述被叫用户为VoLTE用户的情况下，所述归属位置查询设备发送第一位置查询响应至所述主叫用户的MSCe，其中，所述第一位置查询响应中携带有IP多媒体子系统(IMS)网络的路由信息，所述第一位置查询响应用于指示所述主叫用户的MSCe通过所述路由信息将呼叫请求重定向至所述IMS网络。
可选地，所述归属位置查询设备包括以下之一：归属位置寄存器仿真(HLRe)、归属签约业务服务器(HSS)。
可选地，在所述归属位置查询设备发送所述第一位置查询响应至所述主叫用户的MSCe之后，所述方法还包括：所述IMS网络的业务连续性服务器(SCC AS)经由服务-呼叫会话控制功能(S-CSCF)接收所述主叫用户的MSCe发送的第一呼叫请求；所述SCC AS确定所述被叫用户当前注册的网络；所述SCC AS根据所述被叫用户当前注册的网络对所述主叫用户的MSCe发送的所述第一呼叫请求进行接续操作。
可选地，所述SCC AS确定所述被叫用户当前注册的网络，并根据所述 被叫用户当前注册的网络对所述主叫用户的MSCe发送的所述第一呼叫请求进行接续操作包括：所述SCC AS确定所述被叫用户当前注册的网络为CDMA网络；所述SCC AS模拟所述主叫用户的MSCe或者所述主叫用户的拜访位置寄存器(VLR)与所述归属位置查询设备交互，以寻呼所述被叫用户。
可选地，所述SCC AS模拟所述主叫用户的MSCe或者所述主叫用户的VLR与所述归属位置查询设备交互，以寻呼所述被叫用户包括：所述SCC AS发送第二位置查询请求至所述归属位置查询设备；所述归属位置查询设备发送第一路由请求至所述被叫用户的MSCe；所述归属位置查询设备接收所述被叫用户的MSCe响应于所述第一路由请求的第一路由响应，其中，所述第一路由响应中携带有所述被叫用户的临时本地号码；所述归属位置查询设备发送携带有所述临时本地号码的第二位置查询响应至所述SCC AS，以响应所述第二位置查询请求，其中，所述第二位置查询响应中携带有所述临时本地号码；所述SCC AS发送携带有所述临时本地号码的第二呼叫请求至所述S-CSCF；所述S-CSCF发送携带有所述临时本地号码的第三呼叫请求至所述被叫用户的MSCe；所述被叫用户的MSCe根据所述临时本地号码寻呼所述被叫用户。
可选地，所述SCC AS确定所述被叫用户当前注册的网络，并根据所述被叫用户当前注册的网络对所述主叫用户的MSCe发送的所述第一呼叫请求进行接续操作包括：所述SCC AS确定所述被叫用户当前注册的网络为IMS网络；所述SCC AS发送第四呼叫请求至所述被叫用户，以寻呼所述被叫用户。
可选地，在所述归属位置查询设备判断到所述被叫用户为非VoLTE用户的情况下，所述方法还包括：所述归属位置查询设备发送响应于所述第一位置查询请求的另一第一位置查询响应至所述主叫用户的MSCe，其中，所述另一第一位置查询响应用于指示所述主叫用户的MSCe发送第三位置查询请求至所述归属位置查询设备；所述归属位置查询设备接收所述主叫用户的MSCe发送的所述第三位置查询请求；所述归属位置查询设备向所述被叫用户的MSCe发送第二路由请求；所述归属位置查询设备接收所述被叫用户的 MSCe响应于所述第二路由请求的第二路由响应，其中，所述第二路由响应中携带有所述被叫用户的临时本地号码；所述归属位置查询设备发送携带有所述临时本地号码的第三位置查询响应至所述主叫用户的MSCe，以响应所述第三位置查询请求，其中，所述临时本地号码用于所述主叫用户的MSCe向所述被叫用户的MSCe寻呼所述被叫用户。
本发明实施例还提供了一种呼叫请求接续方法，包括：IMS网络的业务连续性服务器(SCC AS)经由服务-呼叫会话控制功能(S-CSCF)接收主叫用户的第一呼叫请求；所述SCC AS确定所述被叫用户当前注册的网络；所述SCC AS根据所述被叫用户当前注册的网络对所述主叫用户发送的所述第一呼叫请求进行接续操作。
可选地，所述SCC AS确定所述被叫用户当前注册的网络，并根据所述被叫用户当前注册的网络对所述主叫用户的MSCe发送的所述第一呼叫请求进行接续操作包括：所述SCC AS确定所述被叫用户当前注册的网络为CDMA网络；所述SCC AS模拟所述主叫用户的MSCe或者所述主叫用户的拜访位置寄存器(VLR)与所述被叫用户的归属位置查询设备交互，以寻呼所述被叫用户。
可选地，所述归属位置查询设备包括以下之一：归属位置寄存器仿真(HLRe)、归属签约业务服务器(HSS)。
可选地，所述SCC AS模拟所述主叫用户的MSCe或者所述主叫用户的VLR与所述归属位置查询设备交互，以寻呼所述被叫用户包括：所述SCC AS发送第二位置查询请求至所述归属位置查询设备；所述归属位置查询设备发送第一路由请求至所述被叫用户的MSCe；所述归属位置查询设备接收所述被叫用户的MSCe响应于所述第一路由请求的第一路由响应，其中，所述第一路由响应中携带有所述被叫用户的临时本地号码；所述归属位置查询设备发送携带有所述临时本地号码的第二位置查询响应至所述SCC AS，以响应所述第二位置查询请求，其中，所述第二位置查询响应中携带有所述临时本地号码；所述SCC AS发送携带有所述临时本地号码的第二呼叫请求至所述S-CSCF；所述S-CSCF发送携带有所述临时本地号码的第三呼叫请求至所述被叫用户的MSCe；所述被叫用户的MSCe根据所述临时本地号码寻呼所述 被叫用户。
可选地，所述SCC AS确定所述被叫用户当前注册的网络，并根据所述被叫用户当前注册的网络对所述主叫用户的MSCe发送的所述第一呼叫请求进行接续操作包括：所述SCC AS确定所述被叫用户当前注册的网络为IMS网络；所述SCC AS发送第四呼叫请求至所述被叫用户，以寻呼所述被叫用户。
本发明实施例还提供了一种呼叫请求重定向装置，应用于被叫用户的归属位置查询设备，包括：第一接收模块，设置为接收主叫用户的移动交换中心仿真(MSCe)发送的第一位置查询请求；判断模块，设置为判断所述被叫用户是否为VoLTE用户；第一发送模块，设置为在判断到所述被叫用户为VoLTE用户的情况下，发送第一位置查询响应至所述主叫用户的MSCe，其中，所述第一位置查询响应中携带有IMS网络的路由信息，所述第一位置查询响应用于指示所述主叫用户的MSCe通过所述路由信息将呼叫请求重定向至所述IMS网络。
可选地，所述归属位置查询设备包括以下之一：归属位置寄存器仿真HLRe、归属签约业务服务器HSS。
可选地，所述装置还包括：第二发送模块，设置为在所述判断模块判断到所述被叫用户为非VoLTE用户的情况下，发送响应于所述第一位置查询请求的另一第一位置查询响应至所述主叫用户的MSCe，其中，所述另一第一位置查询响应用于指示所述主叫用户的MSCe发送第三位置查询请求至所述归属位置查询设备；第二接收模块，设置为接收所述主叫用户的MSCe发送的所述第三位置查询请求；第三发送模块，设置为向所述被叫用户的MSCe发送第二路由请求；第三接收模块，设置为接收所述被叫用户的MSCe响应于所述第二路由请求的第二路由响应，其中，所述第二路由响应中携带有所述被叫用户的临时本地号码；第四发送模块，设置为发送携带有所述临时本地号码的第三位置查询响应至所述主叫用户的MSCe，以响应所述第三位置查询请求，其中，所述临时本地号码用于所述主叫用户的MSCe向所述被叫用户的MSCe寻呼所述被叫用户。
本发明实施例还提供了一种呼叫请求接续装置，应用于IMS网络的业务 连续性服务器SCC AS，包括：第四接收模块，设置为经由服务-呼叫会话控制功能S-CSCF接收主叫用户的第一呼叫请求；确定模块，设置为确定所述被叫用户当前注册的网络；接续模块，设置为根据所述被叫用户当前注册的网络对所述主叫用户发送的所述第一呼叫请求进行接续操作。
可选地，所述确定模块，设置为确定所述被叫用户当前注册的网络为CDMA网络；所述接续模块，设置为模拟所述主叫用户的MSCe或者所述主叫用户的拜访位置寄存器VLR与所述被叫用户的归属位置查询设备交互，以寻呼所述被叫用户。
可选地，所述归属位置查询设备包括以下之一：归属位置寄存器仿真HLRe、归属签约业务服务器HSS。
可选地，所述确定模块，设置为确定所述被叫用户当前注册的网络为IMS网络；所述接续模块，设置为发送第四呼叫请求至所述被叫用户，以寻呼所述被叫用户。
本发明实施例还提供一种计算机可读存储介质，存储有计算机可执行指令，所述计算机可执行指令被处理器执行时实现上述方法。
通过本发明实施例，采用被叫用户的归属位置查询设备接收主叫用户的移动交换中心仿真MSCe发送的第一位置查询请求；归属位置查询设备判断被叫用户是否为VoLTE用户；在判断到被叫用户为VoLTE用户的情况下，归属位置查询设备发送第一位置查询响应至主叫用户的MSCe，其中，第一位置查询响应中携带有IMS网络的路由信息，第一位置查询响应用于指示主叫用户的MSCe通过路由信息将呼叫请求重定向至IMS网络的方式，解决了在CDMA和IMS两个网络共存时寻呼被叫用户的效率低的问题，提高了寻呼被叫用户的效率。
在阅读并理解了附图和详细描述后，可以明白其他方面。
附图概述
图1是根据本发明实施例的呼叫请求重定向方法的流程图；
图2是根据本发明实施例的呼叫请求接续方法的流程图；
图3是根据本发明实施例的呼叫请求重定向装置的结构框图；
图4是根据本发明实施例的呼叫请求重定向装置的可选结构框图；
图5是根据本发明实施例的呼叫请求接续装置的结构框图；
图6是根据本发明可选实施例的当VoLTE用户注册在CDMA网络时，在CDMA网络做被叫业务的流程图；
图7是根据本发明可选实施例的当VoLTE用户注册在LTE网络时，在CDMA网络做被叫业务的流程图；
图8是根据本发明可选实施例的当CDMA用户注册在CDMA网络时，在CDMA网络做被叫业务的流程图；
图9是根据本发明可选实施例的当被叫用户注册在CDMA网络时，在IMS网络做被叫业务的流程图；
本发明的实施方式
下文中将结合附图对本发明的实施例进行详细说明。需要说明的是，在不冲突的情况下，本申请中的实施例及实施例中的特征可以相互任意组合。
需要说明的是，本发明的说明书和权利要求书及上述附图中的术语“第一”、“第二”等是用于区别类似的对象，而不必用于描述特定的顺序或先后次序。
在本实施例中提供了一种呼叫请求重定向方法，图1是根据本发明实施例的呼叫请求重定向方法的流程图，如图1所示，该流程包括如下步骤：
步骤S102，被叫用户的归属位置查询设备接收主叫用户的移动交换中心仿真(MSCe)发送的第一位置查询请求；
步骤S104，被叫用户的归属位置查询设备判断被叫用户是否为VoLTE 用户；
步骤S106，在判断到被叫用户为VoLTE用户的情况下，被叫用户的归属位置查询设备发送第一位置查询响应至主叫用户的MSCe，其中，第一位置查询响应中携带有IMS网络的路由信息，第一位置查询响应用于指示主叫用户的MSCe通过路由信息将呼叫请求重定向至IMS网络。
通过上述步骤，由归属位置查询设备判断到被叫用户属于VoLTE用户的情况下，那么可以认为被叫用户已经在IMS域注册了，此时，通过将呼叫请求重定向至IMS网络的方式，将被叫用户锚定到IMS网络进行寻呼过程，从而实现了一次寻呼过程即可寻呼到被叫用户，节约了在CS网络寻呼被叫用户的过程。可见，将上述步骤应用到CDMA和IMS两个网络共存的场景中则可以解决在CDMA和IMS两个网络共存时最多需要尝试寻呼两次被叫用户导致的寻呼被叫用户的效率低的问题，提高了寻呼被叫用户的效率。
可选地，上述的归属位置查询设备为可以直接或者间接查询到所述被叫用户的业务属性(例如VoLTE业务的状态)的设备，包括但不限于：被叫用户的归属位置寄存器仿真(HLRe)或者被叫用户的归属签约业务服务器(HSS)。
可选地，在归属位置查询设备发送第一位置查询响应至主叫用户的MSCe之后，SCC AS经由服务-呼叫会话控制功能(S-CSCF)接收主叫用户的MSCe发送的第一呼叫请求；SCC AS确定被叫用户当前注册的网络；SCC AS根据被叫用户当前注册的网络对主叫用户的MSCe发送的第一呼叫请求进行接续操作。
在上述过程中，对被叫用户当前注册的网络的确定策略包括：
1、如果被叫用户仅注册在CS网络，则确定CS网络执行业务并寻呼终端；
2、如果被叫用户仅注册在IMS网络，则确定IMS网络执行业务并寻呼终端；
3、如果被叫用户同时在CS网络和IMS网络注册，则可以根据预先的配置或者其他优先级策略确定在CS网络或者IMS网络执行业务并寻呼终端。
可选地，在SCC AS根据被叫用户当前注册的网络为CDMA网络的情况下，SCC AS模拟主叫用户的MSCe或者主叫用户的拜访位置寄存器(VLR)与归属位置查询设备交互，以寻呼被叫用户。
可选地，SCC AS模拟主叫用户的MSCe或者主叫用户的VLR与归属位置查询设备交互，以寻呼被叫用户包括如下过程：
SCC AS发送第二位置查询请求至归属位置查询设备；
归属位置查询设备发送第一路由请求至被叫用户的MSCe；
归属位置查询设备接收被叫用户的MSCe响应于第一路由请求的第一路由响应，其中，第一路由响应中携带有被叫用户的临时本地号码；
归属位置查询设备发送携带有临时本地号码的第二位置查询响应至SCC AS，以响应第二位置查询请求，其中，第二位置查询响应中携带有临时本地号码；
SCC AS发送携带有临时本地号码的第二呼叫请求至S-CSCF；
S-CSCF发送携带有临时本地号码的第三呼叫请求至被叫用户的MSCe；
被叫用户的MSCe根据临时本地号码寻呼被叫用户。
可选地，在SCC AS被叫用户当前注册的网络为IMS网络的情况下，SCC AS发送第四呼叫请求至被叫用户，以寻呼被叫用户。
可选地，在归属位置查询设备判断到被叫用户为非VoLTE用户的情况下，则可以按照正常的CS网络用户(例如非VoLTE用户的普通CDMA网络用户)的流程进行寻呼，例如：
归属位置查询设备发送响应于第一位置查询请求的另一第一位置查询响应至主叫用户的MSCe，其中，另一第一位置查询响应用于指示主叫用户的MSCe发送第三位置查询请求至归属位置查询设备；
归属位置查询设备接收主叫用户的MSCe发送的第三位置查询请求；
归属位置查询设备向被叫用户的MSCe发送第二路由请求；
归属位置查询设备接收被叫用户的MSCe响应于第二路由请求的第二路由响应，其中，第二路由响应中携带有被叫用户的临时本地号码；
归属位置查询设备发送携带有临时本地号码的第三位置查询响应至主叫用户的MSCe，以响应第三位置查询请求，其中，临时本地号码用于主叫用户的MSCe向被叫用户的MSCe寻呼被叫用户。
本实施例中还提供了一种呼叫请求接续方法，图2是根据本发明实施例的呼叫请求接续方法的流程图，如图2所示，该流程包括如下步骤：
步骤S202，SCC AS经由服务-呼叫会话控制功能S-CSCF接收主叫用户的第一呼叫请求；
步骤S204，SCC AS确定被叫用户当前注册的网络；
步骤S206，SCC AS根据被叫用户当前注册的网络对主叫用户发送的第一呼叫请求进行接续操作。
通过上述步骤，在起呼网络为IMS网络的情况下，由SCC AS确定被叫用户当前注册的网络，并根据被叫用户当前注册的网络对主叫用户发送的第一呼叫请求进行接续操作。由于SCC AS可以获知被叫用户的注册状态，因此，SCC AS根据被叫用户在CS网络或者IMS网络的注册状态选择的对被叫用户进行呼叫的网络中可以寻呼到被叫用户，从而实现了一次寻呼过程即可实现对被叫用户的寻呼。可见，将上述步骤应用在CDMA和IMS两个网络共存的场景中，可以解决在CDMA和IMS两个网络共存时最多需要尝试寻呼两次被叫用户导致的寻呼被叫用户的效率低的问题，提高了寻呼被叫用户的效率。
可选地，在SCC AS确定被叫用户当前注册的网络为CDMA网络的情况下，SCC AS模拟主叫用户的MSCe或者主叫用户的拜访位置寄存器VLR与被叫用户的归属位置查询设备交互，以寻呼被叫用户。
可选地，上述的归属位置查询设备包括但不限于以下之一：归属位置寄存器仿真HLRe、归属签约业务服务器HSS。
可选地，SCC AS模拟主叫用户的MSCe或者主叫用户的VLR与归属位置查询设备交互，以寻呼被叫用户包括：
SCC AS发送第二位置查询请求至归属位置查询设备；
归属位置查询设备发送第一路由请求至被叫用户的MSCe；
归属位置查询设备接收被叫用户的MSCe响应于第一路由请求的第一路由响应，其中，第一路由响应中携带有被叫用户的临时本地号码；
归属位置查询设备发送携带有临时本地号码的第二位置查询响应至SCC AS，以响应第二位置查询请求，其中，第二位置查询响应中携带有临时本地号码；
SCC AS发送携带有临时本地号码的第二呼叫请求至S-CSCF；
S-CSCF发送携带有临时本地号码的第三呼叫请求至被叫用户的MSCe；
被叫用户的MSCe根据临时本地号码寻呼被叫用户。
可选地，在SCC AS确定被叫用户当前注册的网络为IMS网络的情况下，SCC AS发送第四呼叫请求至被叫用户，以寻呼被叫用户。
通过以上的实施方式的描述，本领域的技术人员可以清楚地了解到根据上述实施例的方法可借助软件加必需的通用硬件平台的方式来实现，当然也可以通过硬件，但很多情况下前者是更佳的实施方式。基于这样的理解，本发明的技术方案本质上或者说对现有技术做出贡献的部分可以以软件产品的形式体现出来，该计算机软件产品存储在一个存储介质(如ROM/RAM、磁碟、光盘)中，包括若干指令用以使得一台终端设备(可以是手机，计算机，服务器，或者网络设备等)执行本发明各个实施例所述的方法。
在本实施例中还提供了一种呼叫请求重定向装置，应用于被叫用户的归属位置查询设备，该装置用于实现上述实施例及优选实施方式，已经进行过说明的不再赘述。如以下所使用的，术语“模块”可以实现预定功能的软件和/或硬件的组合。尽管以下实施例所描述的装置较佳地以软件来实现，但是硬件，或者软件和硬件的组合的实现也是可能并被构想的。
图3是根据本发明实施例的呼叫请求重定向装置的结构框图，如图3所示，该装置包括：第一接收模块32、判断模块34和第一发送模块36，其中，
第一接收模块32，设置为接收主叫用户的移动交换中心仿真MSCe发送的第一位置查询请求；
判断模块34，耦合至第一接收模块32，设置为判断被叫用户是否为VoLTE用户；
第一发送模块36，耦合至判断模块34，设置为在判断到被叫用户为VoLTE用户的情况下，发送第一位置查询响应至主叫用户的MSCe，其中，第一位置查询响应中携带有IMS网络的路由信息，第一位置查询响应用于指示主叫用户的MSCe通过路由信息将呼叫请求重定向至IMS网络。
可选地，归属位置查询设备包括但不限于以下之一：归属位置寄存器仿真HLRe、归属签约业务服务器HSS。
图4是根据本发明实施例的呼叫请求重定向装置的可选结构框图，如图4所示，该装置还包括：
第二发送模块42，耦合至判断模块34，设置为在判断模块判断到被叫用户为非VoLTE用户的情况下，发送响应于第一位置查询请求的另一第一位置查询响应至主叫用户的MSCe，其中，另一第一位置查询响应用于指示主叫用户的MSCe发送第三位置查询请求至归属位置查询设备；
第二接收模块44，耦合至第二发送模块42，设置为接收主叫用户的MSCe发送的第三位置查询请求；
第三发送模块46，耦合至第二接收模块44，设置为向被叫用户的MSCe发送第二路由请求；
第三接收模块48，耦合至第三发送模块46，设置为接收被叫用户的MSCe响应于第二路由请求的第二路由响应，其中，第二路由响应中携带有被叫用户的临时本地号码；
第四发送模块49，耦合至第三接收模块48，设置为发送携带有临时本地号码的第三位置查询响应至主叫用户的MSCe，以响应第三位置查询请求，其中，临时本地号码用于主叫用户的MSCe向被叫用户的MSCe寻呼被叫用户。
在本实施例中还提供了一种呼叫请求接续装置，应用于IMS网络的业务 连续性服务器(SCC AS)，该装置用于实现上述实施例及优选实施方式，已经进行过说明的不再赘述。如以下所使用的，术语“模块”可以实现预定功能的软件和/或硬件的组合。尽管以下实施例所描述的装置较佳地以软件来实现，但是硬件，或者软件和硬件的组合的实现也是可能并被构想的。
图5是根据本发明实施例的呼叫请求接续装置的结构框图，如图5所示，该装置包括：第四接收模块52、确定模块54和接续模块56，其中，
第四接收模块52，设置为经由服务-呼叫会话控制功能S-CSCF接收主叫用户的第一呼叫请求；
确定模块54，耦合至第四接收模块52，设置为确定被叫用户当前注册的网络；
接续模块56，耦合至确定模块54，设置为根据被叫用户当前注册的网络对主叫用户发送的第一呼叫请求进行接续操作。
可选地，确定模块54，设置为确定被叫用户当前注册的网络为CDMA网络；接续模块56，设置为模拟主叫用户的MSCe或者主叫用户的拜访位置寄存器VLR与被叫用户的归属位置查询设备交互，以寻呼被叫用户。
可选地，归属位置查询设备包括但不限于以下之一：归属位置寄存器仿真HLRe、归属签约业务服务器HSS。
可选地，确定模块54，设置为确定被叫用户当前注册的网络为IMS域；接续模块56，设置为发送第四呼叫请求至被叫用户，以寻呼被叫用户。
本发明的实施例还提供了一种软件，该软件用于执行上述实施例及优选实施方式中描述的技术方案。
本发明的实施例还提供了一种存储介质。在本实施例中，上述存储介质可以被设置为存储用于执行以下步骤的程序代码：
步骤S102，被叫用户的归属位置查询设备接收主叫用户的移动交换中心仿真MSCe发送的第一位置查询请求；
步骤S104，归属位置查询设备判断被叫用户是否为VoLTE用户；
步骤S106，在判断到被叫用户为VoLTE用户的情况下，归属位置查询设备发送第一位置查询响应至主叫用户的MSCe，其中，第一位置查询响应中携带有IMS网络的路由信息，第一位置查询响应用于指示主叫用户的MSCe通过路由信息将呼叫请求重定向至IMS网络。
本发明的实施例还提供了一种存储介质。在本实施例中，上述存储介质可以被设置为存储用于执行以下步骤的程序代码：
步骤S202，SCC AS经由服务-呼叫会话控制功能S-CSCF接收主叫用户的第一呼叫请求；
步骤S204，SCC AS确定被叫用户当前注册的网络；
步骤S206，SCC AS根据被叫用户当前注册的网络对主叫用户发送的第一呼叫请求进行接续操作。
可选地，在本实施例中，上述存储介质可以包括但不限于：U盘、只读存储器(Read-Only Memory，简称为ROM)、随机存取存储器(Random Access Memory，简称为RAM)、移动硬盘、磁碟或者光盘等各种可以存储程序代码的介质。
可选地，本实施例中的具体示例可以参考上述实施例及可选实施方式中所描述的示例，本实施例在此不再赘述。
为了使本发明实施例的描述更加清楚，下面结合可选实施例进行描述和说明。
本发明可选实施例以CDMA和IMS两个网络共存的场景为例对本发明进行举例说明，需要说明的是，其他CS网络与IMS网络共存场景下也可以应用本发明实施例提供的技术方案，以实现寻呼效率的提升。
本发明可选实施例提出了一种实现基于CDMA网络部署VoLTE时业务域选择的方法，属于长期演进(Long Term Evolution，简称为LTE)/分组核心演进(Evolved Packet Core，简称为EPC)移动通讯领域，是一种业务域选 择(Service Domain select，简称为SDS)的实现方法。
以CDMA网络为例，在CDMA网络叠加部署VoLTE业务，被叫用户可以附着在CS网络，也可以附着在IMS网络。采用在两张网络依次寻呼的方案，寻呼的时延很长，且易导致用户寻呼失败，用户体验非常差。
为了降低寻呼时延，提高寻呼效率，本发明可选实施例提供的一种实现基于CDMA网络部署VoLTE时，VoLTE用户做终呼时业务域选择的方法包括：
1、被叫用户所在HLRe/融合HSS(归属签约业务服务器)签署特殊标示，区分用户是普通CDMA用户还是VoLTE用户；
2、主叫用户从CS域发起呼叫时，MSCe查询被叫用户所在的HLRe时，HLRe返回特定的标示，指示MSCe将用户被叫锚定到IMS网络；
3、SCC AS收到Invite请求(相当于上述的呼叫请求)时，能够支持对CDMA网络和IMS网络进行接入域选择，确定被叫用户当前实际注册的网络。
其中，在SCC AS判断用户注册在CDMA网络时，能够扮演CDMA网络的移动交换中心/拜访位置寄存器(Mobile Switching Center/Visitor Location Register，简称为MSCe/VLR)角色，向HLRe查询路由信息以完成接续；
与相关技术相比，本发明可选实施例提出的VoLTE用户做终呼时业务域选择的方法可以精确选择用户所在的注册域作为终呼域，提高了用户语音业务的成功率，增强了用户在VoLTE网络的语音业务体验。
下面结合附图对本发明可选实施例进行举例说明。
本发明可选实施例提供了一种实现CDMA部署VoLTEV网络业务域选择的方法，也即CDMA/VoLTE多模用户，实现在CDMA被叫域业务锚定到IMS网络的方法。
在具体实施时，本发明所述的CMDA部署VoLTE网络业务域选择的方法可以应用于移动通信领域。
如图6所示，在VoLTE被叫用户注册在CDMA网络时，如主叫用户在CDMA网络做被叫业务，则触发被叫用户锚定到IMS网络进行业务域选择。
在本发明可选实施例中，HLRe、SCC AS等网元和其他网元实体之间交 互包括如下步骤：
步骤S601，主叫用户A发起起呼，呼叫被叫用户B；
步骤S602：CDMA MSCe收到用户的起呼请求，向被叫用户所在的HLRe发起位置查询请求；
步骤S603，HLRe判断当前被叫用户是否为VoLTE用户，如果被叫用户为VoLTE用户时，则向MSCe返回路由信息，格式可选地为Prefix+MDN，其中Prefix为IMS网络的路由码，MDN为被叫用户B的移动用户号码簿号码。
步骤S604，MSCe收到HLRe返回的路由码后，根据HLRe返回的路由信息，将呼叫重定向到IMS网络的S-CSCF上；
步骤S605，S-CSCF向SCC AS发起Invite请求(相当于呼叫请求)，携带被叫号码B。
步骤S606，SCC AS执行终呼域选择后，判断被叫用户B注册在CDMA网络，SCC AS模拟MSCe-A向HLRe发起位置查询请求，请求中携带触发码(Trigtype)为34(location)；
步骤S607，HLRe收到SCC AS的位置查询请求，向当前被叫用户注册的MSCe发起路由请求(RouteReq)，请求TLDN；
步骤S608，MSCe-B收到路由请求后，返回TLDN号码；
步骤S609，HLRe通过LocReq(相当于位置查询响应)，向SCC AS返回TLDN号码；
步骤S610，SCC AS向S-CSCF返回TLDN号码；
步骤S611，S-CSCF根据TLDN号码，向被叫用户所在的MSCe发起invite请求；
步骤S612，被叫MSCe-B向被叫用户发起寻呼，完成呼叫。
其中，在步骤S603中，如果MSCe请求LocReq中业务处理能力(TranCapa)参数中的终端列表(TL)参数为1，则返回的响应中，将Prxfix+MDN号码放在公共交换电话网络(PSTN)终端(PSTNTermination) 参数中；如果MSCe请求LOCREQ中TranCapa参数中的TL为0，则返回的响应中，将Prxfix+MDN号码放在目的地数字(Destination Digits)参数中。
如图7所示，在被叫用户注册在IMS网络时，如主叫用户在CDMA网络做被叫业务，则触发被叫用户锚定到IMS网络进行业务域选择。
在本发明可选实施例中，HLRe、SCC AS等网元和其他网元实体之间交互包括如下步骤：
步骤S701，主叫用户A发起起呼，呼叫被叫用户B；
步骤S702，CDMA MSCe-A收到用户的起呼请求，向被叫用户所在的HLRe发起位置查询请求；
步骤S703，HLRe判断当前用户是否为VoLTE用户，如果用户为VoLTE时，则向MSCe返回路由信息，格式为Prefix+MDN，其中Prefix为IMS网络的路由码。
步骤S704，MSCe-A收到HLRe返回的路由码后，根据HLRe返回的路由信息，将呼叫重定向到IMS网络的S-CSCF上；
步骤S705，S-CSCF向SCC AS发起Invite请求，携带被叫号码B。
步骤S706，SCC AS执行终呼域选择后，判断被叫用户B注册在IMS网络，向被叫用户发起寻呼，完成本次呼叫。
其中，在步骤S703中，如果MSCe请求LocReq中TranCapa参数中的TL为1，则返回的响应中，将Prxfix+MDN号码放在PSTNTermination参数中；如果MSCe请求LOCREQ中TranCapa参数中的TL为0，则返回的响应中，将Prxfix+MDN号码放在Destination Digits参数中。
如图8所示，在CDMA被叫用户注册在CDMA网络时，如主叫用户在CDMA网络做被叫业务，在本发明可选实施例中，HLRe、MSCe等网元和其他网元实体之间交互包括如下步骤：
步骤S801，主叫用户A在CDMA网络发起起呼，呼叫被叫用户B；
步骤S802，CDMA MSCe-A收到用户的起呼请求，向被叫用户所在的HLRe发起位置查询请求；
步骤S803，HLRe判断当前用户是否为VoLTE用户，如果用户不为VoLTE时，则向MSCe返回智能网签约信息。
步骤S804，MSCe-A收到HLRe返回的智能网签约后，向智能网触发请求后，再次发生位置请求到HLRe；
步骤S805，HLRe向被叫所在的MSCe-B发起RouteReq请求；
步骤S806，MSCe-B返回对应的TLDN给HLRe；
步骤S807，HLRe根据MSCe-B返回的响应，将TLDN带回给起呼的MSCe-A
步骤S808，主被叫MSCe完成本次语音呼叫；
如图9所示，在被叫用户注册在CDMA网络时，如主叫用户在IMS网络做被叫业务，则触发锚定到IMS网络进行业务域选择。
在本发明可选实施例中，HLRe、SCC AS等网元和其他网元实体之间交互包括如下步骤：
步骤S901，主叫用户A在IMS网络发起起呼，呼叫用户B；
步骤S902，IMS S-CSCF收到用户的起呼请求，向SCC AS发起Invite请求，携带被叫B号码；
步骤S903，SCC AS执行终呼域选择；
步骤S904，SCC AS判断被叫用户B注册在CDMA网络，模拟MSCe/VLR向被叫用户所在的HLRe发送LOCREQ，请求被叫路由号码；
步骤S905，HLRe收到SCC AS的位置请求，向当前用户注册的MSCe-B发起RouteReq，请求TLDN；
步骤S906，MSCe-B收到路由请求后，返回TLDN号码；
步骤S907，HLRe通过LocReq响应，向SCC AS返回TLDN号码；
步骤S908，SCC AS向S-CSCF返回TLDN号码；
步骤S909，S-CSCF根据TLDN号码，向被叫用户所在的MSCe-B发起invite请求；
步骤S910，被叫MSCe-B向被叫用户发起寻呼，完成呼叫。
本领域普通技术人员可以理解上述方法中的全部或部分步骤可通过程序来指令相关硬件(例如处理器)完成，所述程序可以存储于计算机可读存储介质中，如只读存储器、磁盘或光盘等。可选地，上述实施例的全部或部分步骤也可以使用一个或多个集成电路来实现。相应地，上述实施例中的各模块/单元可以采用硬件的形式实现，例如通过集成电路来实现其相应功能，也可以采用软件功能模块的形式实现，例如通过处理器执行存储于存储器中的程序指令来实现其相应功能。本申请不限制于任何特定形式的硬件和软件的结合。
需要说明的是，本申请还可有其他多种实施例，在不背离本申请精神及其实质的情况下，熟悉本领域的技术人员可根据本申请作出各种相应的改变和变形，但这些相应的改变和变形都应属于本申请所附的权利要求的保护范围。
工业实用性
本发明实施例提供的技术方案，被叫用户的归属位置查询设备接收主叫用户的移动交换中心仿真MSCe发送的第一位置查询请求；归属位置查询设备判断被叫用户是否为VoLTE用户；在判断到被叫用户为VoLTE用户的情况下，归属位置查询设备发送第一位置查询响应至主叫用户的MSCe，其中，第一位置查询响应中携带有IMS网络的路由信息，第一位置查询响应用于指示主叫用户的MSCe通过路由信息将呼叫请求重定向至IMS网络。通过本发明实施例，解决了在CDMA和IMS两个网络共存时寻呼被叫用户的效率低的问题，提高了寻呼被叫用户的效率。

Claims (19)

  1. 一种呼叫请求重定向方法，包括：
    被叫用户的归属位置查询设备接收主叫用户的移动交换中心仿真MSCe发送的第一位置查询请求；
    所述归属位置查询设备判断所述被叫用户是否为基于长期演进系统的语音业务VoLTE用户；
    在判断到所述被叫用户为VoLTE用户的情况下，所述归属位置查询设备发送第一位置查询响应至所述主叫用户的MSCe，其中，所述第一位置查询响应中携带有因特网协议多媒体子系统IMS网络的路由信息，所述第一位置查询响应用于指示所述主叫用户的MSCe通过所述路由信息将呼叫请求重定向至所述IMS网络。
  2. 根据权利要求1所述的方法，其中：
    所述归属位置查询设备包括以下之一：归属位置寄存器仿真HLRe、归属签约业务服务器HSS。
  3. 根据权利要求1所述的方法，在所述归属位置查询设备发送所述第一位置查询响应至所述主叫用户的MSCe之后，所述方法还包括：
    所述IMS网络的业务连续性服务器SCC AS经由服务-呼叫会话控制功能S-CSCF接收所述主叫用户的MSCe发送的第一呼叫请求；
    所述SCC AS确定所述被叫用户当前注册的网络；
    所述SCC AS根据所述被叫用户当前注册的网络对所述主叫用户的MSCe发送的所述第一呼叫请求进行接续操作。
  4. 根据权利要求3所述的方法，其中：
    所述SCC AS确定所述被叫用户当前注册的网络，并根据所述被叫用户当前注册的网络对所述主叫用户的MSCe发送的所述第一呼叫请求进行接续操作包括：
    所述SCC AS确定所述被叫用户当前注册的网络为CDMA网络；
    所述SCC AS模拟所述主叫用户的MSCe或者所述主叫用户的拜访位置寄存器VLR与所述归属位置查询设备交互，以寻呼所述被叫用户。
  5. 根据权利要求4所述的方法，其中：
    所述SCC AS模拟所述主叫用户的MSCe或者所述主叫用户的VLR与所述归属位置查询设备交互，以寻呼所述被叫用户包括：
    所述SCC AS发送第二位置查询请求至所述归属位置查询设备；
    所述归属位置查询设备发送第一路由请求至所述被叫用户的MSCe；
    所述归属位置查询设备接收所述被叫用户的MSCe响应于所述第一路由请求的第一路由响应，其中，所述第一路由响应中携带有所述被叫用户的临时本地号码；
    所述归属位置查询设备发送携带有所述临时本地号码的第二位置查询响应至所述SCC AS，以响应所述第二位置查询请求，其中，所述第二位置查询响应中携带有所述临时本地号码；
    所述SCC AS发送携带有所述临时本地号码的第二呼叫请求至所述S-CSCF；
    所述S-CSCF发送携带有所述临时本地号码的第三呼叫请求至所述被叫用户的MSCe；
    所述被叫用户的MSCe根据所述临时本地号码寻呼所述被叫用户。
  6. 根据权利要求3所述的方法，其中：
    所述SCC AS确定所述被叫用户当前注册的网络，并根据所述被叫用户当前注册的网络对所述主叫用户的MSCe发送的所述第一呼叫请求进行接续操作包括：
    所述SCC AS确定所述被叫用户当前注册的网络为IMS网络；
    所述SCC AS发送第四呼叫请求至所述被叫用户，以寻呼所述被叫用户。
  7. 根据权利要求1至6中任一项所述的方法，在所述归属位置查询设备判断到所述被叫用户为非VoLTE用户的情况下，所述方法还包括：
    所述归属位置查询设备发送响应于所述第一位置查询请求的另一第一位置查询响应至所述主叫用户的MSCe，其中，所述另一第一位置查询响应用于指示所述主叫用户的MSCe发送第三位置查询请求至所述归属位置查询设备；
    所述归属位置查询设备接收所述主叫用户的MSCe发送的所述第三位置查询请求；
    所述归属位置查询设备向所述被叫用户的MSCe发送第二路由请求；
    所述归属位置查询设备接收所述被叫用户的MSCe响应于所述第二路由请求的第二路由响应，其中，所述第二路由响应中携带有所述被叫用户的临时本地号码；
    所述归属位置查询设备发送携带有所述临时本地号码的第三位置查询响应至所述主叫用户的MSCe，以响应所述第三位置查询请求，其中，所述临时本地号码用于所述主叫用户的MSCe向所述被叫用户的MSCe寻呼所述被叫用户。
  8. 一种呼叫请求接续方法，包括：
    因特网多媒体子系统IMS网络的业务连续性服务器SCC AS经由服务-呼叫会话控制功能S-CSCF接收主叫用户的第一呼叫请求；
    所述SCC AS确定所述被叫用户当前注册的网络；
    所述SCC AS根据所述被叫用户当前注册的网络对所述主叫用户发送的所述第一呼叫请求进行接续操作。
  9. 根据权利要求8所述的方法，其中：
    所述SCC AS确定所述被叫用户当前注册的网络，并根据所述被叫用户当前注册的网络对所述主叫用户的MSCe发送的所述第一呼叫请求进行接续操作包括：
    所述SCC AS确定所述被叫用户当前注册的网络为CDMA网络；
    所述SCC AS模拟所述主叫用户的MSCe或者所述主叫用户的拜访位置寄存器VLR与所述被叫用户的归属位置查询设备交互，以寻呼所述被叫用 户。
  10. 根据权利要求9所述的方法，其中：
    所述归属位置查询设备包括以下之一：归属位置寄存器仿真HLRe、归属签约业务服务器HSS。
  11. 根据权利要求9所述的方法，其中：
    所述SCC AS模拟所述主叫用户的MSCe或者所述主叫用户的VLR与所述归属位置查询设备交互，以寻呼所述被叫用户包括：
    所述SCC AS发送第二位置查询请求至所述归属位置查询设备；
    所述归属位置查询设备发送第一路由请求至所述被叫用户的MSCe；
    所述归属位置查询设备接收所述被叫用户的MSCe响应于所述第一路由请求的第一路由响应，其中，所述第一路由响应中携带有所述被叫用户的临时本地号码；
    所述归属位置查询设备发送携带有所述临时本地号码的第二位置查询响应至所述SCC AS，以响应所述第二位置查询请求，其中，所述第二位置查询响应中携带有所述临时本地号码；
    所述SCC AS发送携带有所述临时本地号码的第二呼叫请求至所述S-CSCF；
    所述S-CSCF发送携带有所述临时本地号码的第三呼叫请求至所述被叫用户的MSCe；
    所述被叫用户的MSCe根据所述临时本地号码寻呼所述被叫用户。
  12. 根据权利要求8所述的方法，其中：
    所述SCC AS确定所述被叫用户当前注册的网络，并根据所述被叫用户当前注册的网络对所述主叫用户的MSCe发送的所述第一呼叫请求进行接续操作包括：
    所述SCC AS确定所述被叫用户当前注册的网络为IMS网络；
    所述SCC AS发送第四呼叫请求至所述被叫用户，以寻呼所述被叫用户。
  13. 一种呼叫请求重定向装置，应用于被叫用户的归属位置查询设备，包括：
    第一接收模块，设置为接收主叫用户的移动交换中心仿真MSCe发送的第一位置查询请求；
    判断模块，设置为判断所述被叫用户是否为VoLTE用户；
    第一发送模块，设置为在判断到所述被叫用户为VoLTE用户的情况下，发送第一位置查询响应至所述主叫用户的MSCe，其中，所述第一位置查询响应中携带有IMS网络的路由信息，所述第一位置查询响应用于指示所述主叫用户的MSCe通过所述路由信息将呼叫请求重定向至所述IMS网络。
  14. 根据权利要求13所述的装置，其中：
    所述归属位置查询设备包括以下之一：归属位置寄存器仿真HLRe、归属签约业务服务器HSS。
  15. 根据权利要求13或14所述的装置，所述装置还包括：
    第二发送模块，设置为在所述判断模块判断到所述被叫用户为非VoLTE用户的情况下，发送响应于所述第一位置查询请求的另一第一位置查询响应至所述主叫用户的MSCe，其中，所述另一第一位置查询响应用于指示所述主叫用户的MSCe发送第三位置查询请求至所述归属位置查询设备；
    第二接收模块，设置为接收所述主叫用户的MSCe发送的所述第三位置查询请求；
    第三发送模块，设置为向所述被叫用户的MSCe发送第二路由请求；
    第三接收模块，设置为接收所述被叫用户的MSCe响应于所述第二路由请求的第二路由响应，其中，所述第二路由响应中携带有所述被叫用户的临时本地号码；
    第四发送模块，设置为发送携带有所述临时本地号码的第三位置查询响应至所述主叫用户的MSCe，以响应所述第三位置查询请求，其中，所述临时本地号码用于所述主叫用户的MSCe向所述被叫用户的MSCe寻呼所述被叫用户。
  16. 一种呼叫请求接续装置，应用于因特网多媒体子系统IMS网络的业务连续性服务器SCC AS，包括：
    第四接收模块，设置为经由服务-呼叫会话控制功能S-CSCF接收主叫用户的第一呼叫请求；
    确定模块，设置为确定所述被叫用户当前注册的网络；
    接续模块，设置为根据所述被叫用户当前注册的网络对所述主叫用户发送的所述第一呼叫请求进行接续操作。
  17. 根据权利要求16所述的装置，其中：
    所述确定模块，设置为确定所述被叫用户当前注册的网络为CDMA网络；
    所述接续模块，设置为模拟所述主叫用户的MSCe或者所述主叫用户的拜访位置寄存器VLR与所述被叫用户的归属位置查询设备交互，以寻呼所述被叫用户。
  18. 根据权利要求17所述的装置，其中：
    所述归属位置查询设备包括以下之一：归属位置寄存器仿真HLRe、归属签约业务服务器HSS。
  19. 根据权利要求17所述的装置，其中：
    所述确定模块，设置为确定所述被叫用户当前注册的网络为IMS网络；
    所述接续模块，设置为发送第四呼叫请求至所述被叫用户，以寻呼所述被叫用户。
PCT/CN2016/086260 2015-09-30 2016-06-17 呼叫请求重定向方法、呼叫请求接续方法及其装置 WO2017054521A1 (zh)

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