WO2016041208A1 - 选择目标共享网络的cs域和ps域运营商的方法及相关装置 - Google Patents

选择目标共享网络的cs域和ps域运营商的方法及相关装置 Download PDF

Info

Publication number
WO2016041208A1
WO2016041208A1 PCT/CN2014/086962 CN2014086962W WO2016041208A1 WO 2016041208 A1 WO2016041208 A1 WO 2016041208A1 CN 2014086962 W CN2014086962 W CN 2014086962W WO 2016041208 A1 WO2016041208 A1 WO 2016041208A1
Authority
WO
WIPO (PCT)
Prior art keywords
domain
network
information
plmn
msc
Prior art date
Application number
PCT/CN2014/086962
Other languages
English (en)
French (fr)
Inventor
崇卫微
吴晓波
舒林
Original Assignee
华为技术有限公司
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 华为技术有限公司 filed Critical 华为技术有限公司
Priority to PCT/CN2014/086962 priority Critical patent/WO2016041208A1/zh
Priority to CN201480082075.7A priority patent/CN106688281A/zh
Publication of WO2016041208A1 publication Critical patent/WO2016041208A1/zh

Links

Images

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W48/00—Access restriction; Network selection; Access point selection
    • H04W48/18—Selecting a network or a communication service

Definitions

  • the present invention relates to the field of communications technologies, and in particular, to a method and related apparatus for selecting a CS domain and a PS domain operator of a target shared network.
  • a traditional network In a traditional network (only one carrier in the network), one carrier can provide users with circuit switching (English: Circuit Switching, CS for short) and packet switching (English: Packet Switching, PS for short). That is, the CS domain operator and the PS domain operator serving the user are always the same.
  • User Equipment English: User Equipment, UE for short
  • a traditional second-generation mobile phone communication technology English: 2-Generation wireless telephone technology, 2G for short
  • traditional third-generation mobile communication In the technology (English: 3rd-Generation, 3G for short) network, the CS domain registration request message and the PS domain are respectively sent to the network domain of the CS domain and the PS domain of the network through the access network element of the network.
  • the registration request message, the CS domain core network element that accepts the CS domain registration request message of the UE and the PS domain core network element that accepts the PS domain registration request message of the UE always belong to the same operator, and the UE subsequently
  • the voice service signal passes through the CS domain, and the data service signal passes through the PS domain, and the same carrier provides the CS domain and the PS domain service for the UE.
  • a shared network refers to a network shared by multiple operators. Due to lack of resources or network selection policies, the PS domain and CS domain registration messages of the UE in the shared network may be accepted by the core network elements of different operators. . For example, in a shared network, the registration message of the UE in the CS domain is accepted by the CS domain core network element of the first operator, and the registration message of the UE in the PS domain is used by the PS domain core network of the second operator. Accepted by the meta, this makes the UE inconsistent with the operators of the CS domain and the PS domain of this shared network.
  • the prior art proposes a method for selecting a target shared network CS domain and a PS domain operator,
  • the UE is in the CS domain registration process of the target shared network as an example.
  • the mobile switching center (English: Mobile Switching Center, MSC for short) determines the UE and the carrier registered in the original network CS domain.
  • MSC Mobile Switching Center
  • the UE selects the core network element corresponding to the operator registered in the original network CS domain; if the base station determines that the UE is registered in the original network CS domain, If the target shared network is unavailable, the operator is reselected for the UE according to the International Mobile Subscriber Identity (IMSI) information of the UE.
  • IMSI International Mobile Subscriber Identity
  • the UE when the UE is different in the original network CS domain and the PS domain registered carrier, if the operator registered in the original network CS domain and the PS domain is available in the target shared network, the UE is in the target.
  • the operators of the shared network CS domain and PS domain will be consistent with the operators registered in the original network CS domain and PS domain respectively, that is, the UEs in the target shared network CS domain and PS domain are necessarily different; if in the original network CS domain or One of the operators of the PS domain registration may not be available in the target shared network, and the UE may not be the same in the target shared network CS domain and the PS domain.
  • the UE When the UE is only registered in the PS domain, and the registered PS domain operator is available in the target shared network, the UE is registered in the target shared network by using the method of selecting the target shared network CS domain and the PS domain operator.
  • the operators of the CS domain and the PS domain may not be the same. That is, through the prior art, the CS domain operator and the PS domain operator that the UE registers with the target shared network may still be different.
  • Embodiments of the present invention provide a method and related apparatus for selecting a target shared network CS domain and a PS domain operator, and solving a CS domain operator of the target shared network after the UE switches from the original network to a target shared network.
  • PS domain operator inconsistency issues.
  • an embodiment of the present invention provides a mobile switching center MSC, where the MSC includes: a sending unit;
  • the sending unit is configured to switch to the target shared network by the user equipment UE by using a single wireless voice call continuity SRVCC or a circuit domain fallback CSFB, before the end of the circuit switched CS domain call process of the target shared network Transmitting, by the UE, a temporary mobile subscriber identity TMSI and a location area identifier LAI of the CS domain, where the TMSI includes a network resource identifier NRI of the CS domain, and the NRI of the CS domain and the UE are in the original network packet exchange PS domain.
  • the mobility management entity coded MMEC in the globally unique temporary identity GUTI is the same, the LAI includes a public land mobile network identity PLMN ID, and the PLMN ID in the LAI is the same as the PLMN ID in the GUTI, such that the UE is
  • the TMSI and the LAI are carried in a registration request message of a CS domain sent by a base station of the target shared network.
  • the MSC further includes: a receiving unit;
  • the receiving unit is configured to receive the MMEC and the PLMN ID in the GUTI sent by the mobility management entity MME, where the MME is a core network element registered by the UE in the original network PS domain.
  • an embodiment of the present invention provides a user equipment UE, where the UE includes: a receiving unit and a sending unit;
  • the receiving unit is configured to: when the UE switches to a target shared network by using a single wireless voice call continuity SRVCC or a circuit domain fallback CSFB, the UE receives before the end of the circuit switched CS domain call process of the target shared network a temporary mobile subscriber identity TMSI and a location zone identity LAI of the circuit switched CS domain sent by the first mobile switching center MSC of the target shared network, wherein the TMSI includes a network resource identifier NRI of the CS domain, and the NRI of the CS domain
  • the UE is the same as the mobility management entity code MMEC in the globally unique temporary mobile identity GUTI of the packet switched PS domain of the original network, the LAI including the public land mobile network identity PLMN ID, the PLMN ID in the LAI and the GUTI The PLMN ID is the same;
  • the sending unit is configured to send a registration request message of the CS domain to the base station of the target shared network, where the registration request message of the CS domain carries the TMSI and the LAI.
  • an embodiment of the present invention provides a mobility management entity MME, where the MME includes: a sending unit;
  • the sending unit is configured to switch to the target shared network by the user equipment UE by using a single wireless voice call continuity SRVCC or a circuit domain fallback CSFB, before the end of the circuit switched CS domain call process of the target shared network
  • the first mobile switching center MSC of the target shared network sends the mobility management entity code MMEC and the public land mobile network identifier PLMN ID in the globally unique temporary mobile subscriber identity GUTI of the packet switched PS domain of the original network, where
  • the MME is a core network element that is registered by the UE in the PS domain of the original network, so that the first MSC sends a temporary mobile subscriber identity of the CS domain to the UE before the UE sends a registration request message of the CS domain.
  • the TMSI and the location area identifier LAI where the TMSI includes a network resource identifier NRI of the CS domain, the NRI of the CS domain is the same as the MMEC in the GUTI, and the LAI includes a PLMN ID, and the PLMN in the LAI The ID is the same as the PLMN ID in the GUTI.
  • an embodiment of the present invention provides a service support node SGSN of a general packet radio service technology, where the SGSN includes: a first receiving unit, a sending unit, a second receiving unit, and a determining unit;
  • the first receiving unit is configured to receive a registration request message of a packet switched PS domain sent by a base station of the target shared network;
  • the sending unit is configured to send a context request message to the first core network element, where the context request message carries a first identifier, where the first identifier is used to indicate that the first SGSN requests to acquire the UE in the original network circuit.
  • the network resource identifier NRI information and the public land mobile network identifier PLMN ID information of the CS domain are exchanged, wherein the first core network network element is a core registered in the original network PS domain before the UE switches to the target shared network.
  • the second receiving unit is configured to receive a context request response message sent by the first core network element, where the context request response message carries NRI information and PLMN ID information of the UE in the original network CS domain;
  • the determining unit is configured to: according to the NRI information of the UE in the CS domain of the original network, The PLMN ID information determines whether to accept the registration request message of the PS domain.
  • an embodiment of the present invention provides a core network element, including a receiving unit and a sending unit.
  • the receiving unit is configured to receive a context request message sent by the service support node SGSN of the first general packet radio service technology of the target shared network, where the context request information carries a first identifier, where the first identifier is used to indicate the
  • the first SGSN requests to acquire the network resource identifier NRI information and the public land mobile network identifier PLMN ID information of the UE in the original network circuit switched CS domain;
  • the sending unit is configured to send a context request response message to the first SGSN according to the first identifier in the context request message, where the context request response message carries an NRI of the UE in a CS domain of an original network.
  • the information and the PLMN ID information are such that the first SGSN determines whether to accept the registration request information of the PS domain according to the NRI information and the PLMN ID information of the UE in the original network CS domain.
  • an embodiment of the present invention provides a mobile switching center MSC, where the MSC includes a first receiving unit and a first determining unit;
  • the first receiving unit is configured to receive a registration request message of a circuit switched CS domain sent by a base station of the target shared network;
  • the first determining unit is configured to: according to the network resource identifier NRI information of the original network packet switched PS domain or the mobile management entity coded MMEC information, and the public land mobile network identifier PLMN ID, according to the user equipment UE that sends the CS domain registration request message. Information, determining whether to accept the registration request message of the CS domain.
  • the MSC further includes: a second determining unit, a sending unit, and a second receiving unit;
  • the second determining unit is configured to determine whether the MSC stores NRI information or MMEC information of the UE in the PS domain of the original network, and PLMN ID information;
  • the sending unit is configured to receive a determination result of the second determining unit, and if the determining result is that the MSC does not store the NRI information or the MMEC information of the UE in the PS domain of the original network, and the PLMN ID information,
  • the second core network element sends a context request message, where the context request message carries a second identifier, and the second identifier Knowing that the first MSC requests to acquire NRI information or MMEC of the UE in the PS domain of the original network, and PLMN ID information, where the second core network element is that the UE is switching to the target sharing Before the network, the core network element registered in the original network CS domain;
  • the second receiving unit is configured to receive a context request response message sent by the second core network element, where the context request response message carries NRI information or MMEC information of the UE in the original network PS domain, and a PLMN ID. information.
  • an embodiment of the present invention provides a core network element, where the network element includes a receiving unit and a sending unit.
  • the receiving unit is configured to receive a context request message sent by the first mobile switching center MSC of the target shared network, where the context request information carries a second identifier, where the second identifier is used to indicate that the first MSC requests to obtain the location Determining, by the UE, network resource identifier NRI information or mobility management entity coded MMEC information in the original network packet switched PS domain, and public land mobile network identity PLMN ID information;
  • the sending unit is configured to send a context request response message to the first MSC according to the second identifier in the context request message, where the context request response message carries an NRI of the UE in a PS domain of an original network.
  • the information or the MMEC information, and the PLMN ID information so that the first MSC determines whether to receive the registration request message of the CS domain according to the NRI information or the MMEC information of the UE in the PS domain of the original network, and the PLMN ID information.
  • an embodiment of the present invention provides a method for selecting a target shared network CS domain and a PS domain operator, where the method includes:
  • the UE When the user equipment UE switches to the target shared network through a single wireless voice call continuity SRVCC or a circuit domain fallback CSFB, the UE is first of the target shared network before the circuit switched CS domain call procedure of the target shared network ends
  • the mobile switching center MSC sends the temporary mobile subscriber identity TMSI and the location area identifier LAI of the CS domain to the UE, where the TMSI includes the network resource identifier NRI of the CS domain, and the NRI of the CS domain and the UE are in the original network.
  • the mobility management entity coded MMEC in the globally unique temporary identity GUTI of the packet switched PS domain is the same, the LAI contains The public land mobile network identifies a PLMN ID, and the PLMN ID in the LAI is the same as the PLMN ID in the GUTI, so that the UE carries the registration request message of the CS domain sent to the base station of the target shared network. TMS and the LAI.
  • the method before the first mobile switching center MSC of the target shared network sends the temporary mobile subscriber identity TMSI and the location zone identifier LAI of the CS domain to the UE, the method further include:
  • the first MSC receives the MMEC and the PLMN ID in the GUTI sent by the mobility management entity MME, where the MME is a core network element registered by the UE in the original network PS domain.
  • an embodiment of the present invention provides a method for selecting a target shared network CS domain and a PS domain operator, where the method includes:
  • the UE When the user equipment UE switches to the target shared network through a single wireless voice call continuity SRVCC or a circuit domain fallback CSFB, the UE receives the target shared network before the circuit switched CS domain call procedure of the target shared network ends a temporary mobile subscriber identity TMSI and a location area identifier LAI of the CS-switched CS domain sent by the first mobile switching center MSC, where the TMSI includes a network resource identifier NRI of the CS domain, and the NRI of the CS domain and the UE are in the original The mobility management entity coded MMEC in the globally unique temporary mobile identity GUTI of the packet switched PS domain of the network, the LAI including the public land mobile network identity PLMN ID, the PLMN ID in the LAI and the PLMN ID in the GUTI the same;
  • the UE sends a registration request message of the CS domain to the base station of the target shared network, where the registration request message of the CS domain carries the TMSI and the LAI.
  • an embodiment of the present invention provides a method for selecting a target shared network CS domain and a PS domain operator, where the method includes:
  • the UE moves to the target before the end of the circuit switched CS domain call procedure of the target shared network
  • the first mobile switching center MSC of the shared network transmits the mobility management entity code of the UE in the globally unique temporary mobile subscriber identity GUTI of the packet switched PS domain of the original network
  • the MMEC and the public land mobile network identify the PLMN ID, wherein the MME is a core network element registered by the UE in the PS domain of the original network, such that the first MSC before the UE sends a registration request message of the CS domain.
  • a temporary mobile subscriber identity TMSI and a location area identifier LAI of the CS domain where the TMSI includes a network resource identifier NRI of the CS domain, and the NRI of the CS domain is the same as the MMEC in the GUTI.
  • the LAI contains a PLMN ID, and the PLMN ID in the LAI is the same as the PLMN ID in the GUTI.
  • an embodiment of the present invention provides a method for selecting a target shared network CS domain and a PS domain operator, where the method includes:
  • the service support node SGSN of the first general packet radio service technology of the target shared network receives the registration request message of the packet switched PS domain sent by the base station of the target shared network;
  • the first SGSN sends a context request message to the first core network element, where the context request message carries a first identifier, where the first identifier is used to indicate that the first SGSN requests to acquire the UE in the original network circuit switched CS.
  • the first SGSN receives a context request response message sent by the first core network element, where the context request response message carries NRI information and PLMN ID information of the UE in the original network CS domain;
  • the first SGSN determines whether to accept the registration request message of the PS domain according to the NRI information and the PLMN ID information of the UE in the original network CS domain.
  • an embodiment of the present invention provides a method for selecting a target shared network CS domain and a PS domain operator, where the method includes:
  • the first core network element Receiving, by the first core network element, a context request message sent by the service support node SGSN of the first general packet radio service technology of the target shared network, where the context request information carries a first identifier, where the first identifier is used to indicate the first An SGSN requests to acquire the network resource identifier NRI information and the public of the UE in the original network circuit switched CS domain
  • the land mobile network identifies the PLMN ID information, where the first core network element is a core network element registered in the original network PS domain before the UE switches to the target shared network;
  • the first core network element sends a context request response message to the first SGSN according to the first identifier in the context request message, where the context request response message carries the UE in the original network CS domain.
  • the NRI information and the PLMN ID information are such that the first SGSN determines whether to accept the registration request information of the PS domain according to the NRI information and the PLMN ID information of the UE in the original network CS domain.
  • the embodiment of the present invention provides a method for selecting a target shared network CS domain and a PS domain operator, where the method includes:
  • the first mobile switching center MSC of the target shared network receives the registration request message of the circuit switched CS domain sent by the base station of the target shared network;
  • the network resource identifier NRI information or the mobility management entity coded MMEC information of the original network packet switched PS domain and the public land mobile network identifier PLMN ID information is accepted.
  • the first MSC according to the user equipment UE that sends the CS domain registration request message, is in the original network packet switched PS domain network resource identifier NRI information or a mobility management entity.
  • the method further includes: encoding the MMEC information, and the public land mobile network identifier PLMN ID information, and determining whether to accept the registration request message of the CS domain, the method further includes:
  • the first MSC sends a context request message to the second core network element, where the context request message carries a second identifier, where the second identifier is used to indicate that the first MSC requests to acquire the UE.
  • the first MSC receives a context request response message sent by the second core network element, where the context request response message carries NRI information or MMEC information of the UE in the original network PS domain, and PLMN ID information.
  • an embodiment of the present invention provides a method for selecting a target shared network CS domain and a PS domain operator, where the method includes:
  • the second core network element receives the context request message sent by the first mobile switching center MSC of the target shared network, where the context request information carries a second identifier, where the second identifier is used to indicate that the first MSC requests to obtain the location
  • the second core network element sends a context request response message to the first MSC according to the second identifier in the context request message, where the context request response message carries the UE in the original network PS domain.
  • the NRI information or the MMEC information, and the PLMN ID information so that the first MSC determines whether to receive the registration request message of the CS domain according to the NRI information or the MMEC information of the UE in the PS domain of the original network, and the PLMN ID information.
  • an embodiment of the present invention provides a mobile switching center MSC, where the MSC includes a processor, a bus, a memory, and a transmitter;
  • the processor calls the content in the memory through the bus, and when the user equipment UE switches to the target shared network by using a single wireless voice call continuity SRVCC or a circuit domain fallback CSFB, the UE is in the target shared network.
  • the temporary mobile subscriber identity TMSI and the location area identifier LAI of the CS domain are reassigned to the UE before the end of the circuit switched CS domain call process, wherein the TMSI includes a network resource identifier NRI of the CS domain, and the CS domain
  • the NRI is the same as the mobility management entity code MMEC in the globally unique temporary identity GUTI of the original network packet switched PS domain, the LAI including the public land mobile network identity PLMN ID, the PLMN ID in the LAI and the GUTI
  • the PLMN ID is the same;
  • the transmitter is configured to send the TMSI and the LAI to the UE, so that the UE carries the TMSI and the LAI in a registration request message of a CS domain sent to a base station of the target shared network. .
  • the MSC further includes: a receiver
  • the receiver is configured to receive the MMEC and the PLMN ID in the GUTI sent by the mobility management entity MME, where the MME is a core network element registered by the UE in the original network PS domain.
  • an embodiment of the present invention provides a user equipment UE, where the user equipment UE includes a receiver, a processor, a bus, a memory, and a transmitter;
  • the receiver configured to: when the UE switches to a target shared network by using a single wireless voice call continuity SRVCC or a circuit domain fallback CSFB, before the end of the circuit switched CS domain call process of the target shared network, the UE Receiving a temporary mobile subscriber identity TMSI and a location zone identifier LAI of the circuit switched CS domain sent by the first mobile switching center MSC of the target shared network, where the TMSI includes a network resource identifier NRI of the CS domain, and the NRI of the CS domain Same as the mobility management entity coding MMEC in the globally unique temporary mobility identity GUTI of the packet switched PS domain of the original network, the LAI comprising a public land mobile network identity PLMN ID, the PLMN ID in the LAI and the The PLMN ID in GUTI is the same;
  • the processor by using the bus to invoke an instruction in the memory, to generate a CS domain registration request message, where the registration request message of the CS domain carries the TMSI and the LAI, and the A CS domain registration request message is sent to the base station of the target shared network.
  • an embodiment of the present invention provides a mobility management entity MME, where the MME includes a processor, a bus, a memory, and a transmitter;
  • the processor invokes an instruction in the memory through the bus, and when the user equipment UE switches to a target shared network through a single wireless voice call continuity SRVCC or a circuit domain fallback CSFB, the UE is in the target shared network circuit
  • the first mobile switching center MSC to the target shared network Allocating a mobility management entity coding MMEC and a public land mobile network identity PLMN ID in the globally unique temporary mobile subscriber identity GUTI of the packet switched PS domain of the original network, wherein the MME is the PS domain of the UE in the original network a registered core network element, such that the first MSC sends a temporary mobile subscriber identity TMSI and a location zone identifier LAI of the CS domain to the UE before the UE sends a registration request message of the CS domain, where the TMSI Included in the network domain identifier NRI of the CS domain, the NRI of the CS domain is the same as the MMEC in the GUTI, the LA
  • the transmitter is configured to send, by the UE, a mobility management entity code MMEC and a public land mobile network identity PLMN ID in a globally unique temporary mobile subscriber identity GUTI of a packet switched PS domain of the original network to the first MSC.
  • an embodiment of the present invention provides a service support node SGSN of a general packet radio service technology, where the SGSN includes a receiver, a processor, a bus, a memory, and a transmitter;
  • the receiver is configured to receive a registration request message of a packet switched PS domain sent by a base station of the target shared network;
  • the processor by using the bus to invoke an instruction in the memory, to generate a context request message, where the context request message carries a first identifier, where the first identifier is used to indicate that the first SGSN requests to acquire the UE in the original Network resource identification NRI information of the network circuit switched CS domain and public land mobile network identity PLMN ID information;
  • the receiver is further configured to: receive a context request response message sent by the first core network element, where the context request response message carries NRI information and PLMN ID information of the UE in a CS domain of the original network;
  • the processor by using the bus, invokes an instruction in the memory, to determine whether to accept the registration request message of the PS domain according to the NRI information and the PLMN ID information of the UE in the original network CS domain.
  • an embodiment of the present invention provides a core network element, where the network element includes a receiver, a processor, a bus, a memory, and a transmitter;
  • a receiver configured to receive a context request message sent by a service support node SGSN of a first general packet radio service technology of a target shared network, where the context request information carries a first identifier, where the first identifier is used to indicate the
  • the first SGSN requests to acquire the network resource identifier NRI information and the public land mobile network identifier PLMN ID information of the UE in the original network circuit switched CS domain;
  • the processor by using the bus, to invoke an instruction in the memory, to generate a context request response message according to the first identifier in the context request message, where the context request response message carries the UE The NRI information and the PLMN ID information of the original network CS domain, so that the first SGSN determines whether to accept the registration request information of the PS domain according to the NRI information and the PLMN ID information of the UE in the original network CS domain, and by using the The sender sends the context request response message to the first SGSN.
  • an embodiment of the present invention provides a mobile switching center MSC, where the MSC includes: a receiver, a processor, a bus, and a memory;
  • the receiver is configured to receive a registration request message of a circuit switched CS domain sent by a base station of the target shared network;
  • the processor invokes, by the bus, an instruction in the memory, for the network resource identifier NRI information or the mobility management entity code MMEC of the user equipment UE in the original network packet switched PS domain according to the UE domain registration request message that sends the CS domain registration request message.
  • the information, and the public land mobile network identifier PLMN ID information determine whether to accept the registration request message of the CS domain.
  • the processor is further configured to:
  • the context request message carries a second identifier, where the second identifier is used to indicate that the first MSC requests to acquire the UE in the original NRI information or MMEC of the network PS domain, and PLMN ID information;
  • the MSC further includes a receiver, configured to receive a context request response message sent by the second core network element, where the context request response message carries NRI information or MMEC information of the UE in the PS domain of the original network, and the PLMN. ID information.
  • an embodiment of the present invention provides a core network element, including: a receiver, a processor, a bus, a memory, and a transmitter;
  • the receiver is configured to receive a context request message sent by the first mobile switching center MSC of the target shared network, where the context request information carries a second identifier, where the second identifier is used to indicate that the first MSC requests to obtain the location Determining, by the UE, network resource identifier NRI information or mobility management entity coded MMEC information in the original network packet switched PS domain, and public land mobile network identity PLMN ID information;
  • the processor by using the bus, to invoke an instruction in the memory, to generate a context request response message according to the second identifier in the context request message, where the context request response message carries the UE NRI information or MMEC information in the original network PS domain, and PLMN ID information, so that the first MSC determines whether to receive the CS domain according to the NRI information or MMEC information of the UE in the PS domain of the original network, and the PLMN ID information.
  • Registration request message ;
  • the transmitter is configured to send the context request response message to the first MSC.
  • an embodiment of the present invention provides a communication system, including: the first aspect and the first possible implementation manner of the first aspect, the fifteen aspect, and the fifteenth aspect
  • the mobile switching center MSC according to any one of the preceding embodiments, and the user equipment UE of the second aspect or the sixteenth aspect, and the mobility management entity MME of the third aspect or the seventeenth aspect.
  • the embodiment of the present invention provides a communication system, comprising: the general packet radio service technology according to the fourth aspect or the eighteenth aspect
  • the service support node SGSN and the core network element described in any one of the fifth aspect and the nineteenth aspect.
  • the embodiment of the present invention provides a communication system, comprising any one of the first aspect to the first aspect of the sixth aspect, and the first to the twentieth aspect A mobile switching center MSC as claimed in any one of the possible embodiments, and/or a core network element as described in the seventh aspect and the twenty-first aspect.
  • the embodiment of the present invention provides a method for selecting a target shared network CS domain and a PS domain operator.
  • the target shared network side passes the UE in the original network.
  • the PS domain registration registration information, or the registration information of the UE in the original network CS domain performs registration of the UE in the PS domain and the CS domain of the target shared network.
  • the CS domain operator registered by the UE on the target shared network side is consistent with the PS domain operator, and is the PS domain operator or the CS domain operator registered by the UE on the original network side, or both are
  • the base station of the target shared network solves the CS domain operator and the PS domain operator registered by the UE in the target shared network in the prior art according to the IMSI of the UE and the operator selected by the UE by the preset policy. Inconsistent issues.
  • FIG. 1 is a schematic diagram of a mobile switching center according to an embodiment of the present invention
  • FIG. 2 is a schematic diagram of a user equipment according to an embodiment of the present invention.
  • FIG. 3 is a schematic diagram of a mobility management entity according to an embodiment of the present invention.
  • FIG. 4 is a schematic diagram of a service support node of a general packet radio service technology according to an embodiment of the present invention
  • FIG. 5 is a schematic diagram of a core network element according to an embodiment of the present disclosure.
  • FIG. 6 is a schematic diagram of still another mobile switching center according to an embodiment of the present invention.
  • FIG. 7 is a schematic diagram of still another core network element according to an embodiment of the present disclosure.
  • FIG. 8 is a schematic diagram of a computer system according to an embodiment of the present invention.
  • FIG. 9 is a flowchart 1 of a method for selecting a CS domain and a PS domain operator of a target shared network according to an embodiment of the present invention.
  • FIG. 10 is a flowchart 2 of a method for selecting a target shared network CS domain and a PS domain operator according to an embodiment of the present invention
  • FIG. 11 is a flowchart of a method for selecting a CS domain and a PS domain operator of a target shared network in an SRVCC scenario according to an embodiment of the present invention
  • FIG. 12 is a flowchart of a method for selecting a target shared network CS domain and a PS domain operator in a called CSFB scenario according to an embodiment of the present invention
  • FIG. 13 is a flowchart of a method for selecting a target shared network CS domain and a PS domain operator in a calling CSFB scenario according to an embodiment of the present invention
  • FIG. 14 is a flowchart 3 of a method for selecting a CS domain and a PS domain operator of a target shared network according to an embodiment of the present invention
  • FIG. 15 is a flowchart 4 of a method for selecting a CS domain and a PS domain operator of a target shared network according to an embodiment of the present invention
  • FIG. 16 is a flowchart 5 of a method for selecting a CS domain and a PS domain operator of a target shared network according to an embodiment of the present invention
  • FIG. 17 is a flowchart 6 of a method for selecting a CS domain and a PS domain operator of a target shared network according to an embodiment of the present invention
  • FIG. 18 is a flowchart 7 of a method for selecting a CS domain and a PS domain operator of a target shared network according to an embodiment of the present invention
  • FIG. 19 is a flowchart 8 of a method for selecting a CS domain and a PS domain operator of a target shared network according to an embodiment of the present invention
  • FIG. 20 is a flowchart 9 of a method for selecting a CS domain and a PS domain operator of a target shared network according to an embodiment of the present invention
  • FIG. 21 is a flowchart 10 of a method for selecting a CS domain and a PS domain operator of a target shared network according to an embodiment of the present invention
  • FIG. 22 is a schematic diagram of the first MSC obtained in FIG. 13 according to an embodiment of the present invention. Schematic diagram of the process of registering a message of the UE in the original network PS domain;
  • FIG. 23 is a flowchart 11 of a method for selecting a CS domain and a PS domain operator of a target shared network according to an embodiment of the present invention
  • Figure 24 is a schematic diagram 1 of a communication system
  • Figure 25 is a schematic diagram 2 of a communication system
  • Figure 26 is a third schematic diagram of a communication system.
  • a method for selecting a target shared network CS domain and a PS domain operator is provided, which aims to make the user equipment UE After switching from the original network to the target shared network, the CS domain registered in the target shared network is the same as the carrier of the PS domain.
  • the UE is registered in the original network CS domain, and now switches to the target shared network, and the CS domain registration process of the target shared network is taken as an example.
  • the core network element of the target shared network After receiving the CS domain registration request message sent by the UE, the core network element of the target shared network obtains the CS domain identifier that is allocated by the UE in the CS domain of the original network according to the CS domain registration request message, if it is determined
  • the operator that is registered in the CS domain of the original network is different from the carrier that is served by the UE, and sends a rerouting command to the base station of the target shared network, instructing the base station to reselect the CS domain core network element for the UE.
  • the re-routing command received by the base station carries the CS domain identifier and the IMSI information of the core network element that is registered by the UE in the original network CS domain, and the CS domain identifier of the UE includes: Network Resource Identifier (English: Network Resource Identifier, NRI) and Location Area Identifier (English: Temporary Mobile Subscriber Identity, TMSI)
  • NRI Network Resource Identifier
  • TMSI Temporary Mobile Subscriber Identity
  • PLMN ID Public Land Mobile Network Identification
  • LAI Location Area Identity
  • the network CS domain is registered with the operator, and when the operator is available to the target shared network, the base station selects the core network element corresponding to the operator for the UE; if the operator is unavailable in the target shared network, The base station reselects the operator for the UE according to the IMSI information of the UE, and sends a CS domain registration request message of the UE to the CS domain core network element corresponding to the operator, and indicates the CS.
  • the domain core network element accepts the CS domain registration request message.
  • the UE is different in the original network PS domain and the CS domain, and the CS domain operator and the PS domain operator registered in the original network have at least one available in the target shared network.
  • the operators registered in the target shared network PS domain and CS domain may not be the same.
  • the operator registered in the original network CS domain is the carrier one
  • the operator registered in the original network PS domain is the operator 2
  • only one operator is available in the target shared network, such as the carrier is available in the target shared network
  • the operation If the second is not available in the target shared network
  • the UE registered in the target shared network CS domain is the operator one
  • the operator registered in the PS domain is the target shared network side base station according to the UE's IMSI, and the preset
  • the algorithm, which is selected for the UE may be the operator one or the operator one.
  • the UE may be different in the target shared network PS domain and the CS domain.
  • the PS domain operator registered by the UE in the target shared network is still the operator one, and the operator registered in the CS domain is the target sharing.
  • the base station on the network side selects the UE for the UE according to the IMSI of the UE and the preset algorithm, and may or may not be the operator one.
  • the above-mentioned prior art does not guarantee that the CS operator registered with the target shared network is the same as the PS operator, that is, the existing UE still has the CS domain and the PS domain in the target shared network. Inconsistent issues with registered carriers.
  • an embodiment of the present invention proposes a target sharing network.
  • Method and related device of the CS domain and the PS domain operator by allowing the target shared network side to select a CS domain operator of the target shared network according to the registration message of the UE in the original network PS domain; or by letting the target shared network side
  • the registration message of the UE in the original network CS domain selects the PS domain operator of the target shared network for the UE, and solves the problem that the UE in the target shared network CS domain domain PS domain operator is inconsistent in the prior art.
  • an embodiment of the present invention provides an MSC, including: a sending unit 101;
  • the sending unit 101 is configured to switch to the target shared network by using a Single Radio Voice Call Continuity (SRVCC) or a Circuit Switched Fallback (CSFB) in the UE.
  • the UE sends the TMSI and the LAI of the CS domain to the UE before the end of the CS domain call process of the target shared network, where the TMSI includes the NRI of the CS domain, and the NRI of the CS domain
  • the mobility management entity code (English: Mobility Management Entity, MMEC) in the globally unique temporary identifier (GUTI) of the original network PS domain is the same, and the LAI includes the PLMN ID.
  • the PLMN ID in the LAI is the same as the PLMN ID in the GUTI, so that the UE carries the TMSI and the LAI in a registration request message of a CS domain sent to a base station of the target shared network.
  • the MSC when the first MSC does not store the MMEC and the PLMN ID of the UE in the original network PS domain, in order to obtain the MMEC and the PLMN ID of the UE in the original network PS domain, the MSC further includes: a receiving unit 102;
  • the receiving unit 102 is configured to receive an MMEC and a PLMN ID in the GUTI sent by a mobility management entity (English: Mobility Management Entity, MME for short), where the MME is registered by the UE in the original network PS domain. Core network element.
  • a mobility management entity English: Mobility Management Entity, MME for short
  • the receiving unit 102 is specifically configured to:
  • the handover request message of the PS domain that is sent by the MME to the CS domain is received, where the handover request message carries the MMEC and the PLMN ID in the GUTI. .
  • the receiving unit 102 is specifically configured to:
  • the UE If the UE is handed over to the target shared network by using the SRVCC, receiving a handover request message that is sent by the MME to the CS domain, where the handover request message carries the packet of the UE in the original network PS domain.
  • the Temporary Mobile Subscriber Identity (English: Packet Temporary Mobile Subscriber Identity, P-TMSI) and the Routing Area Identity (RAI)
  • P-TMSI carries the MMEC
  • RAI Routing Area Identity
  • the PLMN ID in the GUTI is carried in, and the P-TMSI and the RAI are mapped by the GUTI.
  • the receiving unit 102 is specifically configured to:
  • the service request message sent by the MME is received, where the service request message is used. And indicating the connection status of the UE, so that the first MSC stops paging the UE, and the service request message carries the MMEC and the PLMN ID in the GUTI.
  • the receiving unit 102 is specifically configured to:
  • the service request message sent by the MME is received, where the service request message is used. Determining the connection status of the UE, so that the first MSC stops paging the UE, and the service request message carries the P-TMSI and the RAI of the UE in the PS domain of the original network, in the P-TMSI Carrying the MMEC, the RAI carries a PLMN ID in the GUTI, and the P-TMSI and the RAI are mapped by the GUTI.
  • the receiving unit 102 is specifically configured to:
  • the calling CSFB indication message sent by the MME, where the calling CSFB indication message is used to indicate a service request message subsequently received by the first MSC. It is caused by the calling CSFB, and the calling CSFB indication message carries the MMEC and the PLMN ID in the GUTI.
  • the receiving unit 102 is specifically configured to:
  • the calling CSFB indication message sent by the MME, where the calling CSFB indication message is used to indicate a service request message subsequently received by the first MSC. It is caused by the calling CSFB, and the calling CSFB indication message carries the P-TMSI and the RAI of the UE in the original network PS domain, where the P-TMSI carries the MMEC, and the RAI carries The PLMN ID in the GUTI, the P-TMSI and the RAI are mapped by the GUTI.
  • the embodiment of the present invention provides an MSC, which is a first MSC located in a target shared network, and is accessed by the user equipment UE from the PS domain of the original LTE or 4G network to the target shared network by using SRVCC or CSFB.
  • the first MSC re-allocates the TMSI and the LAI to the UE before the UE ends the call, and the NRI in the re-allocated TMSI is the same as the MMEC in the GUTI of the original network PS domain.
  • the PLMN ID in the LAI is the same as the PLMN ID in the GUTI.
  • the network side selects the same operator for the UE according to the MMEC and the PLMN ID in the GUTI, thereby solving the prior art.
  • the user equipment UE switches from the LTE or 4G network to the shared 2G or 3G network through the SRVCC or the CSFB, the UE is inconsistent with the operators of the CS domain and the PS domain.
  • the LAI includes a PLMN ID
  • the UE can acquire the registered PLMN according to the PLMN ID (English: Registered The Public Land Mobile Network (RPLMN) solves the problem that the UE switches from the LTE or 4G network through the SRVCC or CSFB to the shared 2G or 3G network in the prior art, and there is no problem caused by the RPLMN in the process.
  • PLMN ID English: Registered The Public Land Mobile Network (RPLMN) solves the problem that the UE switches from the LTE or 4G network through the SRVCC or CSFB to the shared 2G or 3G network in the prior art, and there is no problem caused by the RPLMN in the process.
  • RPLMN Registered The Public Land Mobile Network
  • the embodiment of the present invention provides a UE, and the UE includes: a receiving unit 201 and a sending unit 202;
  • the receiving unit 201 is configured to: when the UE is switched to the target shared network by using the SRVCC or the CSFB, the UE receives the CS sent by the first MSC of the target shared network before the CS domain call process of the target shared network ends.
  • the TMSI and the LAI of the domain where the TMSI includes the NRI of the CS domain, the NRI of the CS domain is the same as the MMEC of the UE in the GUTI of the PS domain of the original network, and the LAI includes the PLMN ID, the LAI The PLMN ID in the same is the same as the PLMN ID in the GUTI;
  • the sending unit 202 is configured to send a registration request message of the CS domain to the base station of the target shared network, where the registration request message of the CS domain carries the TMSI and the LAI.
  • the embodiment of the present invention provides a user equipment UE, and the target shared network selects a CS domain operator and a PS domain operator of the target shared network according to the MMEC and the PLMN ID of the UE in the GUTI of the original network PS domain, so that the UE The CS domain operation registered on the target shared network is the same as the PS domain operator.
  • the LAI since the first MSC allocates an LAI to the UE during the UE call, the LAI includes a PLMN ID, and the UE can acquire the RPLMN according to the PLMN ID, thereby solving the existing In the technology, the UE switches to the target shared network through SRVCC or CSFB, and there is no problem caused by the RPLMN during the call.
  • the MME includes: a sending unit 301, in order to solve the problem that the CS domain operator and the PS domain operator that are registered by the target shared network are inconsistent, the embodiment of the present invention provides a mobility management entity MME, and the MME includes:
  • the sending unit 301 is configured to: when the user equipment UE switches to the target shared network by using the SRVCC or the CSFB, the UE sends the first MSC of the target shared network before the end of the CS domain call process of the target shared network
  • the MMEC and the PLMN ID of the UE in the GUTI of the PS domain of the original network where the MME is a core network element registered by the UE in the PS domain of the original network, so that the first MSC is sent by the UE
  • the registration request message of the CS domain sends the TMSI and the LAI of the CS domain to the UE, where the TMSI includes the NRI of the CS domain, the NRI of the CS domain is the same as the MMEC in the GUTI, and the LAI includes PLMN ID, said The PLMN ID in the LAI is the same as the PLMN ID in the GUTI.
  • the embodiment of the present invention provides an MME, where the target shared network selects a CS domain operator and a PS domain operator of the target shared network according to the MMEC and the PLMN ID of the UE in the GUTI of the original network PS domain, so that the UE is in the target.
  • the CS domain operation of the shared network registration is the same as that of the PS domain operator.
  • the LAI since the first MSC allocates an LAI to the UE during the UE call, the LAI includes a PLMN ID, and the UE can acquire the RPLMN according to the PLMN ID, thereby solving the existing In the technology, after the UE switches from the SRVCC or the CSFB to the target shared network, there is no problem caused by the RPLMN during the call.
  • the embodiment of the present invention provides a service support node of the general packet radio service technology (English: Serving GPRS SUPPORT NODE, referred to as: SGSN), in conjunction with FIG. 4, the SGSN includes: a first receiving unit 401, a sending unit 402, a second receiving unit 403, and a determining unit 404;
  • SGSN includes: a first receiving unit 401, a sending unit 402, a second receiving unit 403, and a determining unit 404;
  • the first receiving unit 401 is configured to receive a registration request message of a PS domain sent by a base station of the target shared network.
  • the sending unit 402 is configured to send a context request message to the first core network element, where the context request message carries a first identifier, where the first identifier is used to indicate that the first SGSN requests to acquire the UE in the original network.
  • the second receiving unit 403 is configured to receive a context request response message sent by the first core network element, where the context request response message carries NRI information and PLMN ID information of the UE in the CS domain of the original network;
  • the determining unit 404 is configured to determine, according to the NRI information and the PLMN ID information of the UE in the original network CS domain, whether to accept the registration request message of the PS domain.
  • the determining unit 404 is configured to:
  • the sending unit 402 is further configured to: send an accept response message to the UE;
  • the sending unit 402 is further configured to: send a re-routing message to the base station, where the re-routing message carries NRI information, PLMN ID information, and IMSI information of the UE in the CS domain of the original network. .
  • the embodiment of the present invention provides an SGSN. After receiving the registration request message of the UE in the PS domain, the SGSN does not determine whether to accept the registration request message of the PS domain or send a reroute to the base station of the target shared network.
  • the ID selects the same CS domain and the PS domain operator for the UE, thereby solving the problem that the CS domain operator and the PS domain operator selected by the target shared network for the user equipment UE may be different in the prior art.
  • the embodiment of the present invention provides a core network element, where the core network element is the UE is switched to the target sharing.
  • the core network element registered in the original network PS domain in conjunction with FIG. 5, includes a receiving unit 501 and a sending unit 502;
  • the receiving unit 501 is configured to receive a context request message sent by the first SGSN of the target shared network, where the context request information carries a first identifier, where the first identifier is used to indicate that the first SGSN requests to acquire the UE.
  • the sending unit 502 is configured to send a context request response message to the first SGSN according to the first identifier in the context request message, where the context request response message carries the UE in a CS domain of an original network.
  • the NRI information and the PLMN ID information are such that the first SGSN determines whether to accept the registration request information of the PS domain according to the NRI information and the PLMN ID information of the UE in the original network CS domain.
  • the core network element receives the first SGSN at the receiving unit Before the Context Request message is sent, the NRI information and the PLMN ID information of the UE in the original network CS domain are also required to be obtained. Based on this, the core network element further includes: an obtaining unit 503;
  • the acquiring unit 503 is configured to obtain NRI information and PLMN ID information of the UE in the CS domain of the original network.
  • the embodiment of the present invention provides a core network element, such that the target shared network side selects the same target shared network CS domain operator and PS domain operator according to the NRI and PLMN ID of the UE in the original network CS domain. Therefore, the problem that the CS domain operator and the PS domain operator selected by the target network for the user equipment UE in the prior art may be different may be solved.
  • the embodiment of the present invention provides an MSC, which includes a first receiving unit 601 and a first determining unit 602 in conjunction with FIG. 6;
  • the first receiving unit 601 is configured to receive a registration request message of a CS domain sent by a base station of the target shared network;
  • the first determining unit 602 is configured to determine, according to the NRI information or the MMEC information of the original network PS domain, and the PLMN ID information, whether the user equipment UE that sends the CS domain registration request message accepts the registration request message of the CS domain. .
  • the MSC further includes: a second determining unit 603, a sending unit 604, and a second receiving unit 605;
  • the second determining unit 603 is configured to determine whether the MSC stores NRI information or MMEC information of the UE in the original network PS domain, and PLMN ID information;
  • the sending unit 604 is configured to receive a determination result of the second determining unit, and if the determining result is that the MSC does not store the NRI information or the MMEC information of the UE in the PS domain of the original network, and the PLMN ID information, Send to the second core network element Sending a context request message, where the context request message carries a second identifier, where the second identifier is used to indicate that the first MSC requests to acquire NRI information or MMEC of the UE in the original network PS domain, and PLMN ID information, where The second core network element is a core network element registered by the UE in the original network CS domain before switching to the target shared network;
  • the second receiving unit 605 is configured to receive a context request response message sent by the second core network element, where the context request response message carries NRI information or MMEC information of the UE in the PS domain of the original network, and the PLMN. ID information.
  • the first determining unit 1102 is configured to:
  • the sending unit 1104 is further configured to: send an accept response message to the UE;
  • the sending unit 1104 is further configured to: send a re-routing message to the base station, where the re-routing message carries NRI information or MMEC information, PLMN ID information, and the UE of the UE in the original network PS domain. IMSI information.
  • the embodiment of the present invention provides an MSC, after receiving the registration request message of the CS domain in the CS domain, the MSC does not determine whether to accept the registration request message of the CS domain or the base station to the target shared network.
  • Sending a rerouting command message but determining whether it stores the registration message of the UE in the original network PS domain, if not, sending a context request message to the core network element registered by the UE in the original CS domain, to obtain the UE in the original
  • the NRI or MMEC information of the PS domain, and the PLMN ID information, in the subsequent CS domain and PS domain registration process, the network element of the target shared network is according to the NRI/MMEC and PLMN ID of the UE in the original PS domain.
  • the UE selects the same CS domain and the PS domain operator, thereby solving the problem that the CS domain operator and the PS domain operator selected by the target shared network for the user equipment UE may be different in the prior art.
  • the embodiment of the present invention provides a core network element, the core network.
  • the network element is a core network element registered in the original network CS domain before the UE switches to the target shared network.
  • the network element includes a receiving unit 701 and a sending unit 702.
  • the receiving unit 701 is configured to receive a context request message sent by the first MSC of the target shared network, where the context request information carries a second identifier, where the second identifier is used to indicate that the first MSC requests to acquire the UE.
  • the sending unit 702 is configured to send a context request response message to the first MSC according to the second identifier in the context request message, where the context request response message carries the UE in a PS domain of an original network.
  • the NRI information or the MMEC information, and the PLMN ID information so that the first MSC determines whether to receive the registration request message of the CS domain according to the NRI information or the MMEC information of the UE in the PS domain of the original network, and the PLMN ID information.
  • the second core network element before the receiving unit receives the context request message sent by the first MSC, further needs to acquire NRI information or MMEC information of the UE in the original network PS domain, and PLMN ID information, based on With reference to Figure 7, the network element further includes: an obtaining unit 703;
  • the acquiring unit 703 is configured to acquire NRI information or MMEC information of the UE in the original network PS domain, and PLMN ID information.
  • the embodiment of the present invention provides a core network element, such that the target shared network selects the CS domain operator of the same target shared network for the UE according to the NRI or MMEC of the original network PS domain and the PLMN ID of the UE.
  • the PS domain operator solves the problem that the CS domain operator and the PS domain operator selected by the target shared network for the user equipment UE may be different in the prior art.
  • the receiving unit may be implemented by the receiver 801, and the sending unit may be implemented by the transmitter 802.
  • the network element further includes a processor. 803.
  • the embodiment of the present invention provides a method for selecting a target shared network CS domain and a PS domain operator, and the method is applied to the UE.
  • the SRVCC or CSFB technology the scenario of switching from the original LTE or 4G network to the target sharing 2G or 3G network, the execution entity of the method is the first MSC of the CS domain core network element of the target sharing 2G or 3G network, and FIG. Methods include:
  • the first MSC of the target shared network sends the TMSI of the CS domain to the UE before the CS domain call process of the target shared network ends.
  • the TMSI includes an NRI of a CS domain
  • the NRI of the CS domain is the same as an MMEC of the UE in a GUTI of an original network packet switched PS domain
  • the LAI includes a PLMN ID
  • a PLMN in the LAI The ID is the same as the PLMN ID in the GUTI, so that the UE carries the TMSI and the LAI in a registration request message of a CS domain sent to a base station of the target shared network.
  • the MME registered by the UE in the original LTE or 4G network selects the first MSC of the target shared network to assist the UE in the call process of the target shared network;
  • the network element of the network where the calling UE is located sends a paging request message to the first MSC registered by the UE on the 2G or 3G network, the first MSC.
  • the paging request message is sent to the MME registered by the UE.
  • the first MSC assists the UE to complete the call process on the target shared network.
  • the UE switches to the first MSC through the SRVCC or the CSFB, and the UE cannot perform the registration process on the target shared network before the end of the call process, only after the UE ends the call on the target shared network, the UE In order to register the CS domain and register the PS domain on the target shared network.
  • the registration of a UE in a network can be mainly divided into two types.
  • the first one is an attach procedure initiated by the UE in the CS domain and the PS domain of one network after the booting, and the other is when the UE is booting and completing the attaching process. Due to the reasons of mobile, etc., it is necessary to switch to another network in the power-on state, the location area update (English: Location Area Identity, LAU) process initiated by the CS domain of another network, and the routing area update initiated by the PS domain. :Routing Area Update, referred to as: RAU) process.
  • the registration of the UE in the CS domain and the PS domain of the target shared network is a LAU and RAU procedure, respectively, in the SRVCC or CSFB scenario applied in the embodiment of the present method.
  • the first MSC sends the TMSI and the LAI to the UE, where the NRI in the TMSI is the same as the MMEC in the GUTI allocated by the MME registered by the original LTE or 4G network.
  • the PLMN ID in the LAI is the same as the PLMN ID in the GUTI.
  • the UE After the UE ends the call of the target shared network, the UE performs the registration process of the CS domain and the PS domain in the target shared network, and the CS domain registration request message sent by the UE is a LAU request message, where the LAU request message carries the The PSI and the LAI of the first MSC, the PS domain registration request message sent by the UE is a RAU request message, where the RAU request message carries the P-TMSI and the RAI of the GUTI equivalent mapping, where the P- The NRI in the TMSI is the same as the MMEC in the GUTI, and the PLMN ID in the RAI is the same as the PLMN ID in the GUTI.
  • the CS domain NRI in the LAU and the PLMN ID and the PS domain NRI and the PLMN ID in the RAU are all assigned by the same operator, that is, the operator registered by the UE in the original network PS domain, which is assumed to be the operator one.
  • the base station determines whether the NRI and the operator's correspondence relationship carried in the LAU request message are stored, and after receiving the RAU request message sent by the UE, determining whether the RAU request message is stored. If the NRI carried in the LAU request message is the same as the NRI carried in the RAU request message, if the base station stores the corresponding relationship between the NRI and the carrier 1 Sending the LAU request message to an MSC corresponding to the operator, and sending the RAU request message to the operator Corresponding SGSN, so that the UE is the same as the PS domain operator registered by the target shared network and the PS domain operator.
  • the base station If the base station does not store the corresponding relationship between the NRI and the operator, after receiving the LAU request message sent by the UE, the base station sends the LAU request message to the base station randomly or according to a certain policy.
  • a connected MSC which is assumed to be MSC1
  • the base station after receiving the RAU request message sent by the UE, the base station randomly sends the RAU request message to an SGSN connected to the base station according to a certain policy, which is assumed to be SGSN1.
  • the MSC1 After receiving the LAU request message, the MSC1 determines, according to the NRI and/or the PLMN ID carried in the LAU request message, whether the operator that allocates the NRI and the PLMN ID is the operator to which it belongs, and if so, the MSC1 belongs to The operator is the operator one, the MSC1 accepts the LAU request, and if not, sends a rerouting command to the base station, where the CS domain NRI and the PLMN ID are carried, and the IMSI information of the UE that sends the LAU request is Specifically, how to obtain the IMSI of the UE in the MSC1 may be performed in multiple manners, for example, directly to the UE, and the details are not described herein.
  • the base station If the base station receives the rerouting command sent by the MSC1, the base station first determines, according to the NRI and the PLMN ID in the rerouting command, that the operator corresponding to the NRI and the PLMN ID is the operator one, and determines that the operator is in the target sharing. Whether the network is available, if available, the LAU request is sent to an MSC corresponding to the operator, and if not available, according to the IMSI of the UE, and a preset algorithm, such as a hash algorithm, is the UE. Reselect an operator and send the LAU request to the MSC corresponding to the operator.
  • SGSN1 performs the same judgment as MSC1.
  • the IMSI of the UE is unique, and the base station is a CS domain and a PS domain operator that are reselected for the UE according to the same preset algorithm, and therefore, the base station is The CS domain and the PS domain operator reselected by the UE must also be the same. Based on this, the CS domain operator and the PS domain operator registered by the UE on the target shared network must be the same.
  • the registered core network element allocates PLMN ID information to the UE, and the UE according to the PLMN ID
  • the PLMN list is obtained as a registered PLMN, that is, an RPLMN, for subsequent network selection, and the network name is correctly displayed on the UE side.
  • the UE when the UE switches from the original LTE or 4G network to the target shared network through the SRVCC or the CSFB, the UE must perform the CS domain and the PS in the target shared network after the CS session of the target shared network ends.
  • the registration process of the domain acquires the re-allocated PLMN ID of the operator registered in the target shared network, and the RPLMN of the UE in the original LTE network is unavailable in the target shared network, and therefore, when the UE switches to the SRVCC or CSFB to The target shares the network, and before the end of the CS domain call process of the target shared network, the UE has no available RPLMNs in the target shared network, which will cause some problems, such as the UE has no network name at this stage. Displaying, or if the UE needs to reselect the network after the call ends, the UE has no basis for reselecting the network or the like because no RPLMN is available.
  • the UE has received the LAI re-allocated by the first MSC before the end of the CS session of the target shared network, and the LAI carries the PLMN ID, and the UE can be based on the PLMN ID.
  • An embodiment of the present invention provides a method for selecting a target shared network CS domain and a PS domain operator, where the execution entity of the method is the first MSC of the target shared network CS domain, and the user equipment UE is from the original LTE through SRVCC or CSFB.
  • the first MSC redistributes the TMSI and the LAI for the UE before the end of the UE call, and the NRI and the RSI in the redistributed TMSI
  • the UE has the same MMEC in the GUTI of the original network PS domain, and the PLMN ID in the LAI is the same as the PLMN ID in the GUTI.
  • the network side selects the same CS domain operator and the PS domain operator for the UE according to the MMEC and the PLMN ID. Therefore, the problem that the CS domain operator and the PS domain operator registered by the UE in the target shared network are inconsistent is solved.
  • the LAI since the first MSC allocates an LAI to the UE during the UE call, the LAI includes a PLMN ID, The UE can obtain the RPLMN according to the PLMN ID, thereby solving the problem that the UE switches from the LTE or 4G network through the SRVCC or CSFB to the shared 2G or 3G network in the prior art, and there is no problem caused by the RPLMN in the process. .
  • the embodiment of the present invention further provides a method for selecting a target shared network CS domain and a PS domain operator. The method is performed by the first MSC. Referring to FIG. 10, the method includes:
  • the first MSC receives the MMEC and the PLMN ID in the GUTI sent by the MME, where the MME is a core network element registered by the UE in the original network PS domain.
  • the first MSC may have acquired the registration message of the UE on the MME of the original LTE or 4G network.
  • the UE has already performed the CSFB process.
  • the MME is jointly registered with the MME of one LTE or 4G network and the MSC of another 2G or 3G network.
  • the MME can obtain the registration message of the UE on the MSC, that is, the MSC registered by the UE is the UE.
  • the allocated TMSI and the LAI the MSC can obtain the registration message of the UE on the MME, that is, the GUTI allocated by the UE to the UE in the registered MME.
  • the first MSC that assists the UE in completing the call of the target shared network may be the MSC that the UE has registered with the target shared network, and at this time, the first MSC can acquire the UE.
  • the joint registration is only a special case in which the UE is registered in the original network CS domain and the PS domain, and the UE may also be registered in the original network CS domain and PS domain, but not jointly registered, and the registration time is mutual Independently, the registered PS domain core network element cannot know the registration letter of the UE on the registered CS domain core network element.
  • the registered CS domain core network element may also not be aware of the registration information of the UE on the registered PS domain core network element.
  • the first MSC cannot directly obtain the registration information of the MME that is registered by the UE in the original LTE or the 4G network, that is, the MME cannot directly obtain the GUTI that the UE is allocated in the original network. .
  • the first MSC needs to acquire the UE in the original network PS domain from the MME registered by the UE in the original network LTE or 4G network before the UE ends the CS domain call of the target shared network.
  • MMEC and PLMN ID information in GUTI are examples of the MME registered by the UE in the original network LTE or 4G network.
  • the first MSC of the target shared network sends the CS domain to the UE before the CS domain call process of the target shared network ends.
  • TMSI and LAI wherein the TMSI includes an NRI of a CS domain, the NRI of the CS domain is the same as the MMEC of the UE in the GUTI of the original network PS domain, the LAI includes a PLMN ID, and the PLMN in the LAI The ID is the same as the PLMN ID in the GUTI, so that the UE carries the TMSI and the LAI in a registration request message of a CS domain sent to a base station of the target shared network.
  • step 1002 can be referred to the foregoing step 901, which is not repeatedly described in the embodiment of the present invention.
  • the first scenario SRVCC scenario.
  • the MME of the original LTE or 4G network registered by the UE selects the first MSC of the target shared network to assist the UE to complete according to its interface condition or its own selection policy.
  • a call of the target shared network is initiated, and a handover request message of the PS domain handover to the CS domain is initiated to the first MSC.
  • the handover request message carries the MMEC and the PLMN ID of the UE in the GUTI of the original network PS domain.
  • the MME that is registered by the user equipment UE in the original LTE or 4G network selects the first MSC of the target shared network according to the interface status of itself or its own policy.
  • the MME sends a handover request message of the PS domain to the CS domain to the first MSC, where the handover request message carries the MMEC and the PLMN ID of the UE in the GUTI of the PS domain of the original network.
  • the MME may directly carry the MMEC and the PLMN ID of the UE in the GUTI of the original network PS domain in the handover request message of the PS domain to the CS domain sent by the first MSC, where the MME
  • the P-TMSI and the RAI of the UE may be carried in the handover request message, where the P-TMSI carries the MMEC, and the RAI carries the PLMN ID in the GUTI.
  • the P-TMSI and the RAI are mapped by a GUTI allocated by the MME registered by the UE in the original LTE or 4G network.
  • the first MSC accepts a handover request message that the PS domain sent by the MME switches to the CS domain.
  • the first MSC re-allocates the TMSI and the LAI to the UE, where the NRI in the TMSI is the MMEC in the GUTI allocated by the UE in the original PS domain, and the PLMN ID in the LAI is the PLMN in the GUTI. ID.
  • the second scenario the user equipment UE acts as a CSFB process triggered by the called party.
  • the first MSC receives a paging request message sent by another network element.
  • the other network element is a related network element of the network where the UE is located.
  • the first MSC receives the other network element to send. Page request message.
  • the first MSC sends a paging request message to an MME where the called UE is located.
  • the MME forwards the paging request message to the called UE by using a base station.
  • the MME sends a service request message to the first MSC, and carries the MMEC and the PLMN ID of the called UE.
  • the service request message sent by the MME to the first MSC is used to notify the first MSC of the connection status of the called UE, so that the first MSC stops paging the called UE.
  • the MME may directly carry the MMEC and the PLMN ID of the UE in the GUTI of the PS domain of the original network in the service request message, and the MME may also be in the service request message in an indirect manner.
  • the called UE sends a service extension request to the MME by using a base station, and triggers CSFB.
  • the first MSC re-allocates the TMSI and the LAI to the called UE, where the NRI in the TMSI is the same as the MMEC, and the PLMN ID in the LAI is the same as the PLMN ID in the GUTI.
  • the third case the CSFB process triggered by the UE as the calling party.
  • the calling UE sends a service extension request message to the MME, and triggers CSFB.
  • the MME sends a calling CSFB indication message to the first MSC, where the calling CSFB indication message carries the MMEC and the PLMN ID of the UE in the GUTI of the PS domain of the original network.
  • the calling CSFB indication message sent by the MME to the first MSC is used to indicate that the service request message subsequently received by the first MSC is caused by the calling CSFB.
  • the MME may directly
  • the calling CSFB indication message carries the MMEC and the PLMN ID of the UE in the GUTI of the original PS domain.
  • the MME may also carry the foregoing in the calling CSFB indication message by using an indirect carrying method.
  • a PS domain temporary mobile subscriber identity P-TMSI and a routing area identifier RAI of the UE where the P-TMSI carries the MMEC, the RAI carries the PLMN ID, and the P-TMSI and the RAI are Mapped by the GUTI.
  • the first MSC redistributes TMSI and LAI for the called UE.
  • the NRI in the TMSI is the same as the MMEC, and the PLMN ID in the LAI is the same as the PLMN ID in the GUTI.
  • the UE may be before the end of the CS domain call of the target shared network, that is, before the UE initiates the CS domain registration process on the target shared network.
  • the MMEC in the same is the same, the PLMN ID in the LAI redistributed by the first MSC to the UE is the same as the PLMN ID in the GUTI allocated by the MME in the original network PS domain.
  • the UE in the location area update request message initiated by the CS domain carries the TMSI and the LAI re-allocated by the MSC1, and the UE carries the UE in the original PS domain in the routing area update request message initiated by the PS domain.
  • P-TMSI and RAI of the GUTI mapping wherein the TMSI is the same as the network resource identifier of the CS domain carried in the P-TMSI and the network resource identifier of the PS domain, and is the MMEC in the GUTI.
  • the LAI and the PLMN ID carried in the RAI are the same, and are the PLMN IDs in the GUTI.
  • the target shared network is the same as the operator of the CS domain selected by the UE and the operator of the PS domain.
  • the operator of the PS domain registered by the UE in the original LTE or 4G network if the UE registered in the original LTE or 4G network is not available in the target shared network, the target shared network is the operation of the CS domain selected by the UE.
  • the quotient is consistent with the operator of the PS domain, and is the operator that the base station reselects for the UE through the preset policy and the IMSI of the UE.
  • An embodiment of the present invention provides a method for selecting a target shared network CS domain and a PS domain operator, where the target shared network selects a CS domain operator and a PS domain operation of the target shared network according to the MMEC and the PLMN ID in the GUTI.
  • the CS domain operation that the UE registers with the target shared network is the same as the PS domain operator.
  • the LAI The PLMN ID is included, and the UE can acquire the RPLMN according to the PLMN ID, thereby solving the problem that the UE switches from the LTE or 4G network through the SRVCC or the CSFB to the shared 2G or 3G network in the prior art, and there is no RPLMN in the process. The problem that comes with it.
  • the embodiment of the present invention provides a method for selecting a target shared network CS domain and a PS domain operator, and the execution method of the method is UE, in conjunction with FIG. 14, the method includes:
  • the UE When the user equipment UE is handed over to the target shared network by using the SRVCC or the CSFB, the UE receives the TMSI of the CS domain sent by the first MSC of the target shared network before the CS domain call process of the target shared network ends.
  • an LAI where the TMSI includes an NRI of a CS domain, the NRI of the CS domain is the same as an MMEC of the UE in a GUTI of a PS domain of an original network, the LAI includes a PLMN ID, and a PLMN in the LAI The ID is the same as the PLMN ID in the GUTI.
  • the UE sends a registration request message of the CS domain to the base station of the target shared network, where the registration request message of the CS domain carries the TMSI and the LAI.
  • An embodiment of the present invention provides a method for selecting a target shared network CS domain and a PS domain operator, where the target shared network selects a CS domain operator and a PS domain operation of the target shared network according to the MMEC and the PLMN ID in the GUTI.
  • the CS domain operation that the UE registers with the target shared network is the same as the PS domain operator.
  • the LAI since the first MSC allocates an LAI to the UE during the UE call, the LAI includes a PLMN ID, and the UE can acquire the RPLMN according to the PLMN ID, thereby solving the existing In the technology, the UE switches from the LTE or 4G network through the SRVCC or CSFB to the shared 2G or 3G network, and there is no problem caused by the RPLMN in the process.
  • the embodiment of the present invention provides a method for selecting a target shared network CS domain and a PS domain operator, and the execution method of the method is Before the UE switches to the target shared network, the MME registered in the original LTE or 4G network, in conjunction with FIG. 15, the method includes:
  • the MME When the UE is handed over to the target shared network by using the SRVCC or the CSFB, the MME sends the PS of the UE in the original network to the first MSC of the target shared network before the CS domain call process of the target shared network ends.
  • the MME is a core network element registered by the UE in the PS domain of the original network, so that the first MSC before the UE sends a registration request message of the CS domain Transmitting, to the UE, a TMSI and a LAI of a CS domain, where the TMSI includes an NRI of a CS domain, an NRI of the CS domain is the same as an MMEC in the GUTI, and the LAI includes a PLMN ID, where the LAI is The PLMN ID is the same as the PLMN ID in the GUTI.
  • An embodiment of the present invention provides a method for selecting a target shared network CS domain and a PS domain operator, where the target shared network selects the same target shared network CS domain operator and PS according to the MMEC and the PLMN ID in the GUTI.
  • the domain operator solves the problem that the CS domain operator registered by the UE on the target shared network is inconsistent with the PS domain operator.
  • the LAI since the first MSC allocates an LAI to the UE during the UE call, the LAI includes a PLMN ID, and the UE can acquire the RPLMN according to the PLMN ID, thereby solving the existing In the technology, the UE switches from the LTE or 4G network through the SRVCC or CSFB to the shared 2G or 3G network, and there is no problem caused by the RPLMN in the process.
  • the embodiment of the present invention provides a method for selecting a target shared network CS domain and a PS domain operator. Referring to FIG. 16, the method includes:
  • the MME registered by the UE in the original network PS domain to the target shared network The first MSC transmits the MMEC and PLMN ID in the GUTI allocated to the UE.
  • the first MSC re-allocates a TMSI and an LAI to the UE, where an NRI in the TMSI is the same as an MMEC in the GUTI, and a PLMN ID in the LAI is the same as a PLMN ID in the GUTI. .
  • the UE sends a registration request message of the CS domain to the base station of the target shared network, where the registration request message of the CS domain carries the re-allocated TMSI and LAI, and the registration request message of the CS domain is LAU request message.
  • the shared network in this application refers to a 2G or 3G network.
  • the base station determines, according to the NRI in the TMSI, whether a correspondence between the NRI and an operator is stored.
  • the base station after receiving the LAU request message, the base station does not identify the PLMN ID information in the LAI carried in the request message, and can only identify the NRI information of the CS domain in the TMSI, and The base station cannot directly determine, according to the CS domain NRI information, which operator the operator that allocates the CS domain NRI is, and can only determine whether the NRI and the operation of the CS domain are stored according to the NRI information of the CS domain.
  • the corresponding relationship of the quotient if any, the base station can determine the operator registered by the UE in the original network CS domain according to the correspondence, and if not, the base station cannot determine the operator registered by the UE in the original network CS domain.
  • the base station may store the corresponding relationship between the NRI of the CS domain and the operator. For example, if the UE is registered in the CS domain of the target shared network, it is assumed that the registered CS domain operator is the operator one. The operator allocates the TMSI and the LAI to the UE, and the base station of the target shared network stores the correspondence between the CS domain NRI and the operator one in the TMSI. When the UE switches from the registered LTE or 4G network to the shared 2G or 3G network, the base station receives the LAU request message sent by the UE, where the LAU request message carries the operator-assigned TMSI and LAI, and the base station determines that the TMSI is stored. The correspondence between the CS domain NRI and the operator one.
  • the base station of the target shared network does not store the correspondence between the CS domain NRI and the operator, that is, the base station of the target shared network cannot according to the NRI information of the CS domain in the LAU request message of the UE. , judging that the CS domain NRI is Which operator is assigned.
  • the base station sends a registration request message of the CS domain to a second MSC corresponding to the operator.
  • the second MSC accepts a registration request message of the CS domain, and sends an accept response message to the UE.
  • the second MSC may obtain the NRI information of the CS domain in the TMSI in the LAU request message, and the PLMN ID information in the LAI, where the MSC1 determines the NRI information of the CS domain and the The PLMN ID is assigned by the operator to which it belongs, and the MSC1 accepts the LAU request message and sends an accept response message to the UE.
  • the second MSC when the second MSC receives After the LAU request message, it may be determined whether the CS domain NRI information in the LAU request message is allocated by the operator to which the UE belongs, or may only determine whether the PLMN ID in the LAU request message is assigned by the operator to which the LAU request message belongs. And determining, by the OC1, whether the CS domain NRI and/or the PLMN ID in the LAU request message are allocated by the own operator. There may be many ways, which are not described in detail in the embodiments of the present invention.
  • the base station sends a registration request message of the CS domain to a third MSC connected to the base station, where the third MSC is an MSC connected to the base station, and the third MSC
  • the base station is randomly selected according to a preset policy.
  • the third MSC determines, according to the PLMN ID in the LAI in the registration request message of the CS domain or the NRI in the TMSI, whether the PLMN ID and the operator corresponding to the NRI are carriers to which the UE belongs.
  • the third MSC accepts the registration request message of the CS domain, and sends an accept response message to the UE.
  • the third MSC sends a rerouting message to the UE.
  • the rerouting message carries information such as an NRI, a PLMN ID, and an IMSI of the UE.
  • the base station determines whether an NRI corresponding to the re-routing message and an operator corresponding to the PLMN ID are available in the target shared network.
  • the base station when the base station can only obtain the NRI information of the CS domain, if the base station does not store the correspondence between the NRI and the operator in the TMSI, the base station cannot determine the allocation only according to the NRI information of the CS domain.
  • Which operator is the operator of the NRI information of the CS domain, and when the base station simultaneously acquires the NRI information of the CS domain and the PLMN ID information, the base station may determine the allocation of the CS domain by combining the two.
  • Which operator is the NRI information and the operator of the PLMN ID information, that is, the operator registered by the UE in the original network CS domain, and whether the operator is available in the target shared network.
  • the base station sends a registration request message of the CS domain to a fourth MSC corresponding to the operator.
  • the base station determines, according to the NRI information of the CS domain and the PLMN ID information, that the operator that allocates the NRI information of the CS domain and the PLMN ID information is the operator one, the base station will The LAU request message is sent to a fourth MSC corresponding to the operator, and the fourth MSC accepts the LAU request message and sends an accept response message to the UE.
  • the fourth MSC may accept the request message by determining that the CS domain NRI and the PLMN ID corresponding to the operator in the request message are the operator to which the fourth MSC belongs, and further, the base station is transmitting the LAU request message.
  • the IMSI of the UE may also be carried in the message, indicating that the rerouting procedure has been performed, the fourth MSC directly accepts the request message according to the IMSI in the request message, or the base station is transmitting a LAU request message.
  • the instruction of the fourth MSC to receive the LAU request message is carried out. It can be understood that the process of the fourth MSC accepting the LAU request message may be multiple, which is not repeatedly described in the embodiment of the present invention.
  • the fourth MSC accepts a registration request message of the CS domain, and sends an acceptance response message to the UE.
  • the base station reselects a CS domain operator for the UE according to the IMSI of the UE.
  • the base station reselects a CS domain operator for the UE according to the IMSI of the UE, and assumes that it is the operator 2, and sends the LAU request message to the operator.
  • the MSC sends an accept response message to the UE.
  • the registration process of the UE in the PS domain is not implemented.
  • the network side performs the MMEC and the PLMN ID in the GUTI allocated by the MME for the UE.
  • the UE selects the CS domain operator, and the selection process may refer to steps 1603 to 1604, except that the core network element that accepts the PS domain registration request message of the UE is the SGSN of the target shared network.
  • the target shared network selects the CS domain operator and the PS domain operator of the same target shared network for the UE according to the MMEC and the PLMN ID in the GUTI, thereby solving the CS domain operator domain PS domain operation of the UE registered in the target shared network. Inconsistent issues. Moreover, since the first MSC allocates an LAI to the UE during the UE call, the LAI includes a PLMN ID, and the UE can acquire the RPLMN according to the PLMN ID, thereby solving the existing In the technology, the UE switches from the LTE or 4G network through the SRVCC or CSFB to the shared 2G or 3G network, and there is no problem caused by the RPLMN in the process.
  • the operator of the target shared network CS domain and the PS domain are inconsistent, and the embodiment of the present invention provides a target shared network CS domain and PS domain.
  • the method of the operator, the executor of the method is the first SGSN of the target shared network
  • the scenario applied by the method is a scenario in which the user equipment UE is jointly registered in the PS domain and the CS domain of the original network. Referring to FIG. 17, the method includes:
  • the first SGSN of the target shared network receives a registration request message of a PS domain sent by a base station of the target shared network.
  • the registration request message of the PS domain is a PS domain registration request message sent by the UE on the target shared network, and may be an RAU request message or an attachment request message of the PS domain.
  • the first SGSN sends a context request message to the first core network element, where the context request message carries a first identifier, where the first identifier is used to indicate that the first SGSN requests to acquire the UE in the original network CS.
  • the first SGSN After the first SGSN receives the registration request message of the PS domain, the first SGSN does not determine whether to accept the registration request message of the PS domain or send a rerouting command to the base station of the shared network.
  • the first SGSN sends the context request information to the first core network element, where the context request information carries a first identifier, where the first identifier is used to indicate that the first SGSN requests to acquire the UE in the original network CS domain. NRI information and PLMN ID information.
  • the joint registration refers to that after the user equipment UE registers in the PS domain of the LTE or 4G network, the registered MME triggers an MSC of the 2G or 3G network to complete the CS domain of the UE in the 2G or 3G network.
  • the registered SGSN triggers an MSC of the network to complete the CS domain registration process of the UE in the network.
  • the jointly registered MME or SGSN can learn the registration message of the UE on the MSC, for example, the TMSI and LAI information allocated by the MSC for the UE, and the jointly registered MSC can also acquire the UE on the MME or the SGSN.
  • the registration message such as the GUTI allocated by the MME for the UE, or the P-TMSI and the RAI allocated by the SGSN to the UE.
  • the first SGSN receives a context request response message sent by the first core network element, where the context request response message carries the UE in the original network. NRI information and PLMN ID information of the CS domain.
  • the first SGSN determines, according to the NRI information and the PLMN ID information of the UE in the original network CS domain, whether to accept the registration request message of the PS domain.
  • the first SGSN determines whether the NRI information of the UE in the CS domain of the original network and the operator corresponding to the PLMN ID information are carriers to which the UE belongs.
  • the first SGSN accepts the registration request message of the PS domain, and sends an accept response message to the UE. If not, the first SGSN sends a re-routing message to the base station, where the re-routing message carries NRI information, PLMN ID information, and IMSI information of the UE in the CS domain of the original network.
  • the first SGSN sends a rerouting command message to the base station, so that the base station selects the UE according to the NRI and PLMN ID of the original CS domain in the rerouting command message.
  • the operator registered by the UE in the target shared network is the operator registered by the UE in the original network CS domain;
  • the operator registered in the original network CS domain is not available in the target shared network, and the UE registered in the target shared network is the base station of the target shared network, according to the IMSI of the UE, and a preset algorithm, for the UE. Re-elected operators.
  • the embodiment of the present invention provides a method for selecting a target shared network CS domain and a PS domain operator.
  • the first SGSN of the PS domain of the target shared network After receiving the registration request message of the UE in the PS domain, the first SGSN of the PS domain of the target shared network
  • the first core network element sends a context request message to obtain the NRI and the PLMN ID of the UE in the original CS domain.
  • the network element of the target shared network is in accordance with the UE.
  • the NRI and the PLMN ID of the CS domain select the same PS domain and the CS domain operator for the UE, thereby solving the problem that the CS domain operator and the PS domain operator selected by the target shared network for the user equipment UE in the prior art may not The same problem.
  • Embodiments of the present invention provide a CS domain and a PS domain operation for selecting a target shared network.
  • the method of the method, the method is performed by the first core network element, and the first core network element is a core network element registered in the original PS domain before the UE switches to the target shared network, and the method is combined with FIG. 18 include:
  • the first core network element receives the context request message sent by the first SGSN of the target shared network, where the context request information carries a first identifier, where the first identifier is used to indicate that the first SGSN requests to acquire the UE.
  • the first core network element sends a context request response message to the first SGSN according to the first identifier in the context request message, where the context request response message carries the UE in the original network CS.
  • the NRI information of the domain and the PLMN ID information so that the first SGSN determines whether to accept the registration request information of the PS domain according to the NRI information and the PLMN ID information of the UE in the original network CS domain.
  • the first core network element Before receiving the context request message sent by the first SGSN, the first core network element needs to acquire the NRI information and the PLMN ID information of the UE in the original network CS domain by using the joint registration.
  • the embodiment of the present invention provides a core network element, where the target shared network side selects the same target shared network CS domain operator and PS domain operator for the UE according to the NRI and the PLMN ID of the UE in the original network CS domain. Therefore, the problem that the CS domain operator and the PS domain operator selected by the target network for the user equipment UE in the prior art may be different may be solved.
  • the embodiment of the present invention provides a method for selecting a target shared network CS domain and a PS domain operator, and the method is combined with FIG. include:
  • the UE sends a registration request message of the PS domain to the base station of the target shared network, where the registration request message of the PS domain is an attach request message or a routing area update. RAU request message.
  • the base station sends a registration request message of the PS domain to a first SGSN of the target shared network.
  • the first SGSN sends a context request message to the first core network element, where the context request information carries a second identifier, where the second identifier is used to indicate that the first SGSN requests to acquire the UE in the original network CS.
  • NRI information and PLMN ID information of the domain are used to indicate that the first SGSN requests to acquire the UE in the original network CS.
  • the first core network element may be represented by a second SGSN or MME.
  • the first core network element sends a context request response message to the first SGSN, where the context request response message carries NRI information and PLMN ID information of the UE in the original network CS domain.
  • the first SGSN determines whether the NRI information of the UE in the CS domain of the original network and the operator corresponding to the PLMN ID information are carriers to which the UE belongs.
  • the first SGSN accepts a registration request message of the PS domain, and sends an accept response message to the UE.
  • the first SGSN sends a re-routing message to the base station, where the re-routing message carries NRI information, PLMN ID information, and IMSI information of the UE in the original network CS domain.
  • the base station determines whether the NRI and the operator corresponding to the PLMN ID are operators of the target shared network.
  • the base station selects a third SGSN corresponding to the operator for the UE, and sends a registration request message of the PS domain to the third SGSN.
  • the third SGSN accepts a registration request message of the PS domain and sends an acceptance response message to the UE.
  • the base station reselects the PS domain operator for the UE according to the IMSI of the UE.
  • the registration process of the UE in the CS domain is not reflected, and the UE is at the target.
  • the target shared network selects a CS domain operator for the UE according to the NRI information and the PLMN ID information of the UE in the original network CS domain.
  • An embodiment of the present invention provides a method for selecting a CS domain and a PS domain operator of a target shared network, by which the base station selects the same CS domain for the UE according to the NRI and the PLMN ID of the original CS domain.
  • the operator and the PS domain operator solve the problem that the CS domain and the PS domain operator selected by the target network for the user equipment UE in the prior art may be inconsistent.
  • the embodiment of the present invention provides a method for selecting a target shared network CS domain and a PS domain operator, and the execution method of the method is The first MSC of the target shared network, in conjunction with FIG. 20, the method includes:
  • the first MSC of the target shared network receives the registration request message of the CS domain sent by the base station of the target shared network.
  • the registration request message of the CS domain is a CS domain registration request message sent by the UE on the target shared network, and may be a LAU request message or an attachment request message of the CS domain.
  • the first MSC determines, according to the NRI information or the MMEC information of the original network packet switched PS domain, and the PLMN ID information, according to the user equipment UE that sends the CS domain registration request message, whether to accept the registration request message of the CS domain.
  • the LTE or 4G network since the LTE or 4G network is in the initial stage of construction, in general, the LTE or 4G network only supports data services, and the user's call service still needs to be returned to the traditional 2G or 3G network. At this time, there is a case where the UE may be jointly registered with an MME sharing a 2G or 3G network in an MME of an LTE or 4G network.
  • the registered MME allocates a GUTI to the UE, and the registered MSC is The UE allocates the TMSI and the LAI, where the TMSI includes the CS domain NRI information, and the LAI includes the PLMN ID information, and the base station of the network where the MSC is located stores the correspondence between the NRI and the operator to which the MSC belongs.
  • the CS domain and the PS domain are initiated within the network.
  • the registration process after receiving the CS domain registration request message, the base station can determine the correspondence between the NRI and the operator according to the NRI information in the TMSI, and send the CS domain registration request message to the operator.
  • the MSC that is, the first MSC that receives the CS domain registration request information sent by the UE may be the MSC that the UE was previously registered with.
  • the first MSC After the first MSC receives the CS domain registration request message sent by the UE, the first MSC has acquired the registration message of the UE on the MME, that is, the MMEC in the GUTI allocated by the MME to the UE. And the PLMN ID, the first MSC determines, according to the MMEC and the PLMN ID, whether to accept the CS domain registration request message sent by the UE.
  • the first MSC accepts the registration request message of the CS domain, and sends an accept response message to the UE;
  • the first MSC sends a re-routing message to the base station, where the re-routing message carries the MMEC information, the PLMN ID information of the UE in the PS domain of the original network, and the International Mobile Subscriber Identity (IMSI) of the UE. information.
  • IMSI International Mobile Subscriber Identity
  • the receiving the first MSC is not the MSC that is jointly registered before the UE
  • the first MSC needs to register with the UE in the original network CS domain after receiving the CS domain registration request.
  • the MSC obtains the NRI or MMEC information of the UE in the original network PS domain, and the PLMN ID information.
  • the acquisition process can be seen in FIG. 21, including:
  • the first MSC determines whether the NRI information or the MMEC information of the UE in the PS domain of the original network, and the PLMN ID information are stored.
  • the first MSC sends a context request message to the second core network element, where the context request message carries a second identifier, where the second identifier is used to indicate that the first MSC requests to obtain the location.
  • the context request message carries a second identifier, where the second identifier is used to indicate that the first MSC requests to obtain the location.
  • the first MSC After the first MSC receives the registration request message of the CS domain, the first MSC does not determine whether to accept the registration request message of the CS domain or send a rerouting command to the base station of the target shared network. After the first MSC determines that the NRI information or the MMEC information of the UE in the original network PS domain and the PLMN ID information are not stored, the first MSC sends the context request information to the second core network element, The context request information carries a second identifier, where the second identifier is used to indicate that the first MSC requests to acquire NRI information or MMEC information of the UE in the original network PS domain, and PLMN ID information.
  • the first MSC receives a context request response message sent by the second core network element, where the context request response message carries NRI information or MMEC information of the UE in a PS domain of the original network, and PLMN ID information.
  • the second core network element can obtain the registration message of the UE on the MME or SGSN registered in the original network PS domain, that is, the second core, in the case that the UE is jointly registered in the CS domain and the PS domain of the original network.
  • the network element can obtain the P-TMSI and the RAI allocated by the GUTI or SGSN allocated by the MME registered by the UE in the original network.
  • the second core network element sends a context request response message to the first MSC according to the second identifier, where the context request response information carries the P-TMSI and the RAI of the UE in the original network PS domain.
  • the context request response information carries the P-TMSI and the RAI of the UE in the original network PS domain.
  • the first MSC determines NRI information or MMEC information of the UE in the original network PS domain, and whether the operator corresponding to the PLMN ID information is an operator to which the UE belongs.
  • the first MSC accepts the registration request message of the CS domain, and sends an accept response message to the UE.
  • the first MSC sends a re-routing message to the base station, where the re-routing message carries NRI information or MMEC information, PLMN ID information, and IMSI information of the UE in the original network PS domain.
  • the first MSC sends a rerouting command message to the base station, so that the base station according to the NRI information or the MMEC information of the UE in the PS domain of the original network according to the rerouting command message, and the PLMN ID is The UE selects a corresponding operator, or causes the base station to reselect an operator for the UE according to the IMSI of the UE.
  • the target shared network is the operator selected by the UE in the CS domain and the operator selected in the PS domain are all the UE in the original.
  • An operator registered in the network PS domain if the UE registered in the original network PS domain is not available in the target shared network, the base station is registered in the CS domain registration process of the UE or in the PS domain of the UE. The process re-selects the operator for the UE according to the IMSI of the UE. Since the IMSI of the UE is unique, the reselection policies are consistent (for example, all are IMSI hash algorithms), so the reselected PS domain and CS are performed. The operators of the domain are also consistent.
  • the embodiment of the present invention provides a method for selecting a target shared network CS domain and a PS domain operator, in which the first MSC of the PS domain of the target shared network receives the registration request message of the UE in the CS domain of the CS domain. After that, it is determined whether the UE registers the registration message of the UE in the original network PS domain, and if not, sends a context request message to the second core network element to obtain the NRI or MMEC information of the UE in the original PS domain, and the PLMN ID information.
  • the network element of the target shared network selects the CS domain operator and the PS domain operator for the UE according to the NRI/MMEC and the PLMN ID of the UE in the original network PS domain.
  • the operators that register the UE in the target shared network are the same, are the operators registered in the original network PS domain, or all the operators that the target shared network base station reselects for the UE. Therefore, the problem that the CS domain operator and the PS domain operator selected by the target shared network for the user equipment UE may be different in the prior art is solved.
  • the embodiment of the present invention provides a method for selecting a target shared network CS domain and a PS domain operator, and the execution method of the method is a second core network element, wherein The second core network element is a core network element that is registered in the original network CS domain before the UE switches to the target shared network.
  • the method includes:
  • the second core network element that sends the registration request message of the CS domain in the target shared network receives the context request message sent by the first MSC of the target shared network, where the context request information carries the second identifier, where the second identifier is And indicating that the first MSC requests to acquire NRI information or MMEC information of the UE in the PS domain of the original network, and PLMN ID information.
  • the second core network element sends a context request response message to the first MSC according to the second identifier in the context request message, where the context request response message carries the UE in the original network PS.
  • the NRI information or the MMEC information of the domain, and the PLMN ID information so that the first MSC determines whether to receive the registration request message of the CS domain according to the NRI information or the MMEC information of the UE in the PS domain of the original network, and the PLMN ID information. .
  • the second core network element acquires a registration message of the UE in the original network PS domain in the process of the joint registration, that is, the MMEC in the GUTI allocated by the registered MME for the UE. And the PLMN ID information, or the NRI information in the P-TMSI allocated by the registered SGSN for the UE and the PLMN ID information in the RAI.
  • An embodiment of the present invention provides a method for selecting a target shared network CS domain and a PS domain operator, where the target shared network selects the same target for the UE according to the NRI or MMEC of the original network PS domain and the PLMN ID.
  • the CS domain operator and the PS domain operator of the shared network solve the problem that the CS domain operator and the PS domain operator selected by the target shared network for the user equipment UE may be different in the prior art.
  • the embodiment of the present invention provides a method for selecting a target shared network CS domain and a PS domain operator, and the method is combined with FIG. 23 Includes:
  • the user equipment UE sends a registration request message of the CS domain to the base station of the target shared network, where the registration request message of the CS domain is an attach request message or a LAU request message.
  • the base station sends a registration request message of the CS domain to a first MSC of the target shared network.
  • the first MSC determines whether a registration message of the UE in the original network PS domain is stored. If not, the first MSC sends a context request message to the second core network element, where the context request information carries the first And the first identifier is used to indicate that the first MSC requests to acquire NRI or MMEC information of the UE in the original network PS domain, and PLMN ID information.
  • the second core network element is represented by a second MSC.
  • the second core network element sends a context request response message to the first MSC, where the context request response message carries NRI information or MMEC information of the UE in the original network PS domain, and PLMN ID information.
  • the first MSC determines whether the UE is in the NRI or MMEC of the original network PS domain, and whether the operator corresponding to the PLMN ID information is an operator to which the UE belongs.
  • the first MSC accepts the registration request message of the CS domain, and sends an acceptance response message to the UE.
  • the first MSC sends a re-routing message to the base station, where the re-routing message carries the NRI or MMEC, PLMN ID information of the UE in the original network PS domain, and the IMSI information of the UE.
  • the base station determines whether the NRI or MMEC, and an operator corresponding to the PLMN ID, is an operator of the target shared network.
  • the base station selects a third MSC corresponding to the operator for the UE, and sends a registration request message of the CS domain to the third MSC.
  • the third MSC accepts a registration request message of the CS domain and sends an accept response message to the UE.
  • the base station is heavy for the UE according to the IMSI of the UE. Select the CS domain operator.
  • the embodiment shown in FIG. 23 does not show the PS domain registration process of the UE in the target shared network.
  • the target shared network side is based on the NRI or MMEC of the UE in the original network PS domain, and the PLMN ID is the UE. Select the carrier of the PS domain.
  • An embodiment of the present invention provides a method for selecting a target shared network CS domain and a PS domain operator, where the target shared network selects the same target for the UE according to the NRI or MMEC of the original network PS domain and the PLMN ID.
  • the CS domain operator and the PS domain operator of the shared network solve the problem that the CS domain operator and the PS domain operator selected by the target shared network for the user equipment UE may be different in the prior art.
  • the embodiment of the present invention provides a communication system, which is applied to the UE to switch through SRVCC or CSFB.
  • the LTE/4G network and the target shared network may be overlapped or non-overlapping, which is not limited by the embodiment of the present invention.
  • the communication system includes an MSC, a UE, and an MME.
  • MSC mobile station
  • UE mobile station
  • MME mobile station
  • the detailed technical features of the MSC in the communication system refer to the corresponding embodiment of any one of FIG. 1 and FIG. 9 to FIG. 13.
  • the detailed technical features of the UE can be referred to any one of FIG. 2 and FIG.
  • the detailed technical features of the MME refer to the corresponding embodiments in any of the embodiments of FIG. 3 and FIG.
  • the embodiment of the present invention further provides a communication system, where the communication system includes an SGSN of a target shared network and a first core network element, where the first core network element is the UE handover.
  • the core network element registered in the original network PS domain is applied to the scenario where the UE is jointly registered in the PS domain of the original network CS domain.
  • the detailed technical features of the SGSN can be referred to the corresponding embodiment in any of the foregoing FIG. 4 and FIG. 17.
  • the detailed technical features of the second core network element can be seen in the figure. 5 and FIG. 18 corresponding to the embodiment, the embodiment of the present invention will not be described again.
  • the embodiment of the present invention further provides a communication system, where the communication system is applied to a scenario in which a UE is jointly registered in a CS domain and a PS domain of an original network, where the communication system includes: an MSC and a second core network. yuan.
  • the original network and the target shared network may or may not overlap, which is not limited by the embodiment of the present invention.
  • the embodiment of the present invention provides a communication system, in which the registration information of the UE in the original network PS domain, including the PS domain NRI or MMEC, and the PLMN ID, the CS domain operator and the PS domain operator that select the target shared network for the UE, Or, by using the registration information of the UE in the original network CS domain, including the CS domain NRI and the PLMN ID, selecting the CS domain operator and the PS domain operator of the target shared network for the UE, so that the CS domain operator registered by the UE in the target shared network
  • the same as the PS domain operator which solves the problem that the CS domain operator and the PS domain operator registered by the UE in the target shared network are inconsistent.

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Security & Cryptography (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Mobile Radio Communication Systems (AREA)

Abstract

本发明实施例提供了一种选择目标共享网络的电路交换（CS）域和分组交换（PS）域运营商的方法及相关装置，解决了用户设备（UE）切换至目标共享网络后注册的CS域运营商与PS域运营商不一致的问题。所述方法包括：当UE通过单一无线语音呼叫连续性（SRVCC）或电路域回落（CSFB）切换至目标共享网络，UE在CS域通话过程结束之前，目标共享网络的第一移动交换中心（MSC）接收移动管理实体（MME）发送的UE的移动管理实体编码（MMEC）和公共陆地移动网标识（PLMN ID）；第一MSC向UE发送CS域的临时移动用户标识（TMSI）和位置区标识（LAI），TMSI中包含CS域的网络资源标识（NRI），所述NRI与所述MMEC相同，LAI包含PLMN ID，所述LAI中的PLMN ID与第一MSC接收的所述PLMN ID相同，以使得UE在向目标共享网络的基站发送的CS域的注册请求消息中携带TMSI和LAI。该方法应用于通信技术领域。

Description

选择目标共享网络的CS域和PS域运营商的方法及相关装置 技术领域
本发明涉及通信技术领域，尤其涉及选择目标共享网络的CS域和PS域运营商的方法及相关装置。
背景技术
在传统网络(网络中只有一个运营商)中，一个运营商可以同时为用户提供电路交换(英文：Circuit Switching，简称：CS)域和分组交换(英文：Packet Switching，简称：PS)域的服务，即服务于用户的CS域运营商和PS域运营商总是相同的。举例来说，用户设备(英文：User Equipment，简称：UE)在接入一个传统的第二代手机通信技术(英文：2-Generation wireless telephone technology，简称2G)网络或传统的第三代移动通信技术(英文：3rd-Generation，简称：3G)网络时，首先会通过该网络的接入网网元向该网络的CS域与PS域的核心网网元分别发送CS域注册请求消息和PS域注册请求消息，接受该UE的CS域注册请求消息的CS域核心网网元与接受该UE的PS域注册请求消息的PS域核心网网元总是属于同一个运营商的，该UE后续的语音业务信号经由CS域，数据业务信号经由PS域，由同一个运营商为该UE提供CS域与PS域的服务。
但在共享网络中可能并不总是这样。共享网络是指由多个运营商共享的网络，由于资源匮乏或者选网策略的不同，UE在共享网络中的PS域和CS域注册消息可能分别被不同的运营商的核心网网元所接受。举例来说，在一个共享网络中，UE在CS域的注册消息被第一运营商的CS域核心网网元所接受，UE在PS域的注册消息被第二运营商的PS域核心网网元所接受，这使得UE在这一共享网络的CS域和PS域的运营商不一致。
为了解决UE在共享网络的CS域和PS域的运营商不一致问题，现有技术提出了一种选择目标共享网络CS域和PS域运营商的方法，以 UE在目标共享网络的CS域注册过程为例，当接收到UE发送的CS域注册请求消息的移动交换中心(英文：Mobile Switching Center，简称MSC)判断UE在原网络CS域注册的运营商与自身所属的运营商不一致时，向目标共享网络的基站发送重新路由命令，请求基站为UE重新选择一个MSC。若基站判断UE在原网络CS域注册的运营商在目标共享网络可用，则为UE选择在原网络CS域注册的运营商对应的核心网网元；若基站判断UE在原网络CS域注册的运营商在目标共享网络不可用，则根据UE的国际移动用户识别码(International Mobile Subscriber Identity，IMSI)信息，采用预定的算法为UE重新选择运营商。
由此可知，通过现有技术，当UE在原网络CS域和PS域注册的运营商不相同的情况下，若在原网络CS域和PS域注册的运营商在目标共享网络都可用，UE在目标共享网络CS域和PS域的运营商将分别与在原网络CS域和PS域注册的运营商一致，即UE在目标共享网络CS域和PS域的运营商必然不相同；若在原网络CS域或PS域注册的运营商中的一个在目标共享网络不可用，则UE在目标共享网络CS域和PS域的运营商可能不相同。而当UE仅在PS域注册过，且所注册的PS域运营商在目标共享网络可用的情况下，采用上述的选择目标共享网络CS域和PS域运营商的方法，UE在目标共享网络注册的CS域和PS域的运营商有可能不相同。即通过现有技术，UE在目标共享网络注册的CS域运营商和PS域运营商仍有可能不相同。
发明内容
本发明的实施例提供选择目标共享网络CS域和PS域运营商的方法及相关装置，解决了UE从原网络切换到一个目标共享网络后，所述UE在目标共享网络的CS域运营商和PS域运营商不一致的问题。
为达到上述目的，本发明的实施例采用如下技术方案：
第一方面，本发明实施例提供了一种移动交换中心MSC，所述MSC包括：发送单元；
所述发送单元，用于当用户设备UE通过单一无线语音呼叫连续性SRVCC或电路域回落CSFB切换至目标共享网络，所述UE在所述目标共享网络的电路交换CS域通话过程结束之前，向所述UE发送CS域的临时移动用户标识TMSI和位置区标识LAI，其中，所述TMSI中包含CS域的网络资源标识NRI，所述CS域的NRI与所述UE在原网络分组交换PS域的全局唯一的临时标识GUTI中的移动管理实体编码MMEC相同，所述LAI包含公共陆地移动网标识PLMN ID，所述LAI中的PLMN ID与所述GUTI中的PLMN ID相同，以使所述UE在向所述目标共享网络的基站发送的CS域的注册请求消息中携带所述TMSI和所述LAI。
在第一种可能的实施方式中，结合第一方面，所述MSC还包括：接收单元；
所述接收单元，用于接收移动管理实体MME发送的所述GUTI中的MMEC和PLMN ID，其中，所述MME是所述UE在原网络PS域所注册的核心网网元。
第二方面，本发明实施例提供了一种用户设备UE，所述UE包括：接收单元和发送单元；
所述接收单元，用于当所述UE通过单一无线语音呼叫连续性SRVCC或电路域回落CSFB切换至目标共享网络，所述UE在所述目标共享网络的电路交换CS域通话过程结束之前，接收目标共享网络的第一移动交换中心MSC发送的电路交换CS域的临时移动用户标识TMSI和位置区标识LAI，其中，所述TMSI中包含CS域的网络资源标识NRI，所述CS域的NRI与所述UE在原网络的分组交换PS域的全局唯一的临时移动标识GUTI中的移动管理实体编码MMEC相同，所述LAI包含公共陆地移动网标识PLMN ID，所述LAI中的PLMN ID与所述GUTI中的PLMN ID相同；
所述发送单元，用于向所述目标共享网络的基站发送CS域的注册请求消息，所述CS域的注册请求消息中携带所述TMSI和所述LAI。
第三方面，本发明实施例提供了一种移动管理实体MME，所述MME包括：发送单元；
所述发送单元，用于当用户设备UE通过单一无线语音呼叫连续性SRVCC或电路域回落CSFB切换至目标共享网络，所述UE在所述目标共享网络的电路交换CS域通话过程结束之前，向所述目标共享网络的第一移动交换中心MSC发送所述UE在原网络的分组交换PS域的全局唯一的临时移动用户标识GUTI中的移动管理实体编码MMEC和公共陆地移动网标识PLMN ID，其中，所述MME是所述UE在原网络的PS域注册的核心网网元，以使得所述第一MSC在所述UE发送CS域的注册请求消息之前向所述UE发送CS域的临时移动用户标识TMSI和位置区标识LAI，其中，所述TMSI中包含CS域的网络资源标识NRI，所述CS域的NRI与所述GUTI中的MMEC相同，所述LAI包含PLMN ID，所述LAI中的PLMN ID与所述GUTI中的PLMN ID相同。
第四方面，本发明实施例提供了一种通用分组无线服务技术的服务支持节点SGSN，所述SGSN包括：第一接收单元、发送单元、第二接收单元和判断单元；
所述第一接收单元，用于接收所述目标共享网络的基站发送的分组交换PS域的注册请求消息；
所述发送单元，用于向第一核心网网元发送上下文请求消息，所述上下文请求消息携带第一标识，所述第一标识用于表示所述第一SGSN请求获取所述UE在原网络电路交换CS域的网络资源标识NRI信息和公共陆地移动网标识PLMN ID信息，其中，所述第一核心网网元是所述UE切换至所述目标共享网络之前，在原网络PS域所注册的核心网网元；
所述第二接收单元，用于接收所述第一核心网网元发送的上下文请求响应消息，所述上下文请求响应消息中携带所述UE在原网络CS域的NRI信息和PLMN ID信息；
所述判断单元，用于根据所述UE在原网络CS域的NRI信息和 PLMN ID信息，判断是否接受所述PS域的注册请求消息。
第五方面，本发明实施例提供了一种核心网网元，包括接收单元和发送单元；
所述接收单元，用于接收目标共享网络的第一通用分组无线服务技术的服务支持节点SGSN发送的上下文请求消息，所述上下文请求信息携带第一标识，所述第一标识用于表示所述第一SGSN请求获取所述UE在原网络电路交换CS域的网络资源标识NRI信息和公共陆地移动网标识PLMN ID信息；
所述发送单元，用于根据所述上下文请求消息中的所述第一标识，向所述第一SGSN发送上下文请求响应消息，所述上下文请求响应消息中携带所述UE在原网络CS域的NRI信息和PLMN ID信息，以使得所述第一SGSN根据所述UE在原网络CS域的NRI信息和PLMN ID信息判断是否接受所述PS域的注册请求信息。
第六方面，本发明实施例提供了一种移动交换中心MSC，所述MSC包括第一接收单元和第一判断单元；
所述第一接收单元，用于接收所述目标共享网络的基站发送的电路交换CS域的注册请求消息；
所述第一判断单元，用于根据发送所述CS域注册请求消息的用户设备UE在原网络分组交换PS域的网络资源标识NRI信息或移动管理实体编码MMEC信息，以及公共陆地移动网标识PLMN ID信息，判断是否接受所述CS域的注册请求消息。
在第一种可能的实施方式中，结合第六方面，所述MSC还包括：第二判断单元、发送单元和第二接收单元；
所述第二判断单元，用于判断所述MSC是否存储有所述UE在原网络PS域的NRI信息或MMEC信息，以及PLMN ID信息；
所述发送单元，用于接收所述第二判断单元的判断结果，若所述判断结果为所述MSC没有存储所述UE在原网络PS域的NRI信息或MMEC信息，以及PLMN ID信息，则向第二核心网网元发送上下文请求消息，所述上下文请求消息携带第二标识，所述第二标 识用于表示所述第一MSC请求获取所述UE在原网络PS域的NRI信息或MMEC，以及PLMN ID信息，其中，所述第二核心网网元是所述UE在切换至所述目标共享网络之前，在原网络CS域注册的核心网网元；
所述第二接收单元，用于接收所述第二核心网网元发送的上下文请求响应消息，所述上下文请求响应消息中携带所述UE在原网络PS域的NRI信息或MMEC信息，以及PLMN ID信息。
第七方面，本发明实施例提供了一种核心网网元，所述网元包括接收单元和发送单元；
所述接收单元，用于接收目标共享网络的第一移动交换中心MSC发送的上下文请求消息，所述上下文请求信息携带第二标识，所述第二标识用于表示所述第一MSC请求获取所述UE在原网络分组交换PS域的网络资源标识NRI信息或移动管理实体编码MMEC信息，以及公共陆地移动网标识PLMN ID信息；
所述发送单元，用于根据所述上下文请求消息中的所述第二标识，向所述第一MSC发送上下文请求响应消息，所述上下文请求响应消息中携带所述UE在原网络PS域的NRI信息或MMEC信息，以及PLMN ID信息，以使得所述第一MSC根据所述UE在原网络PS域的NRI信息或MMEC信息，以及PLMN ID信息判断是否接收所述CS域的注册请求消息。
第八方面，本发明实施例提供了一种选择目标共享网络CS域和PS域运营商的方法，该方法包括：
当用户设备UE通过单一无线语音呼叫连续性SRVCC或电路域回落CSFB切换至目标共享网络，所述UE在所述目标共享网络的电路交换CS域通话过程结束之前，所述目标共享网络的第一移动交换中心MSC向所述UE发送CS域的临时移动用户标识TMSI和位置区标识LAI，其中，所述TMSI中包含CS域的网络资源标识NRI，所述CS域的NRI与所述UE在原网络分组交换PS域的全局唯一的临时标识GUTI中的移动管理实体编码MMEC相同，所述LAI包含 公共陆地移动网标识PLMN ID，所述LAI中的PLMN ID与所述GUTI中的PLMN ID相同，以使得所述UE在向所述目标共享网络的基站发送的CS域的注册请求消息中携带所述TMSI和所述LAI。
在第一种可能的实施方式中，结合第八方面，所述目标共享网络的第一移动交换中心MSC向所述UE发送CS域的临时移动用户标识TMSI和位置区标识LAI之前，该方法还包括：
所述第一MSC接收移动管理实体MME发送的所述GUTI中的MMEC和PLMN ID，其中，所述MME是所述UE在原网络PS域所注册的核心网网元。
第九方面，本发明实施例提供了一种选择目标共享网络CS域和PS域运营商的方法，该方法包括：
当用户设备UE通过单一无线语音呼叫连续性SRVCC或电路域回落CSFB切换至目标共享网络，所述UE在所述目标共享网络的电路交换CS域通话过程结束之前，所述UE接收目标共享网络的第一移动交换中心MSC发送的电路交换CS域的临时移动用户标识TMSI和位置区标识LAI，其中，所述TMSI中包含CS域的网络资源标识NRI，所述CS域的NRI与所述UE在原网络的分组交换PS域的全局唯一的临时移动标识GUTI中的移动管理实体编码MMEC相同，所述LAI包含公共陆地移动网标识PLMN ID，所述LAI中的PLMN ID与所述GUTI中的PLMN ID相同；
所述UE向所述目标共享网络的基站发送CS域的注册请求消息，所述CS域的注册请求消息中携带所述TMSI和所述LAI。
第十方面，本发明实施例提供了一种选择目标共享网络CS域和PS域运营商的方法，该方法包括：
当用户设备UE通过单一无线语音呼叫连续性SRVCC或电路域回落CSFB切换至目标共享网络，所述UE在所述目标共享网络的电路交换CS域通话过程结束之前，移动管理实体MME向所述目标共享网络的第一移动交换中心MSC发送所述UE在原网络的分组交换PS域的全局唯一的临时移动用户标识GUTI中的移动管理实体编码 MMEC和公共陆地移动网标识PLMN ID，其中，所述MME是所述UE在原网络的PS域注册的核心网网元，以使得所述第一MSC在所述UE发送CS域的注册请求消息之前向所述UE发送CS域的临时移动用户标识TMSI和位置区标识LAI，其中，所述TMSI中包含CS域的网络资源标识NRI，所述CS域的NRI与所述GUTI中的MMEC相同，所述LAI包含PLMN ID，所述LAI中的PLMN ID与所述GUTI中的PLMN ID相同。
第十一方面，本发明实施例提供了一种选择目标共享网络CS域和PS域运营商的方法，该方法包括：
目标共享网络的第一通用分组无线服务技术的服务支持节点SGSN接收所述目标共享网络的基站发送的分组交换PS域的注册请求消息；
所述第一SGSN向第一核心网网元发送上下文请求消息，所述上下文请求消息携带第一标识，所述第一标识用于表示所述第一SGSN请求获取所述UE在原网络电路交换CS域的网络资源标识NRI信息和公共陆地移动网标识PLMN ID信息，其中，所述第一核心网网元是所述UE切换至所述目标共享网络之前，在原网络PS域所注册的核心网网元；
所述第一SGSN接收所述第一核心网网元发送的上下文请求响应消息，所述上下文请求响应消息中携带所述UE在原网络CS域的NRI信息和PLMN ID信息；
所述第一SGSN根据所述UE在原网络CS域的NRI信息和PLMN ID信息，判断是否接受所述PS域的注册请求消息。
第十二方面，本发明实施例提供了一种选择目标共享网络CS域和PS域运营商的方法，该方法包括：
第一核心网网元接收目标共享网络的第一通用分组无线服务技术的服务支持节点SGSN发送的上下文请求消息，所述上下文请求信息携带第一标识，所述第一标识用于表示所述第一SGSN请求获取所述UE在原网络电路交换CS域的网络资源标识NRI信息和公共 陆地移动网标识PLMN ID信息，其中，所述第一核心网网元是所述UE切换至所述目标共享网络之前，在原网络PS域所注册的核心网网元；
所述第一核心网网元根据所述上下文请求消息中的所述第一标识，向所述第一SGSN发送上下文请求响应消息，所述上下文请求响应消息中携带所述UE在原网络CS域的NRI信息和PLMN ID信息，以使得所述第一SGSN根据所述UE在原网络CS域的NRI信息和PLMN ID信息判断是否接受所述PS域的注册请求信息。
第十三方面，本发明实施例提供了一种选择目标共享网络CS域和PS域运营商的方法，该方法包括：
目标共享网络的第一移动交换中心MSC接收所述目标共享网络的基站发送的电路交换CS域的注册请求消息；
所述第一MSC根据发送所述CS域注册请求消息的用户设备UE在原网络分组交换PS域的网络资源标识NRI信息或移动管理实体编码MMEC信息，以及公共陆地移动网标识PLMN ID信息，判断是否接受所述CS域的注册请求消息。
在第一种可能的实施方式中，结合第十三方面，所述第一MSC根据发送所述CS域注册请求消息的用户设备UE在原网络分组交换PS域的网络资源标识NRI信息或移动管理实体编码MMEC信息，以及公共陆地移动网标识PLMN ID信息，判断是否接受所述CS域的注册请求消息之前，该方法还包括：
所述第一MSC判断是否存储有所述UE在原网络PS域的NRI信息或MMEC信息，以及PLMN ID信息；
若没有，所述所述第一MSC向第二核心网网元发送上下文请求消息，所述上下文请求消息携带第二标识，所述第二标识用于表示所述第一MSC请求获取所述UE在原网络PS域的NRI信息或MMEC，以及PLMN ID信息，其中，所述第二核心网网元是所述UE在切换至所述目标共享网络之前，在原网络CS域注册的核心网网元；
所述第一MSC接收所述第二核心网网元发送的上下文请求响应消息，所述上下文请求响应消息中携带所述UE在原网络PS域的NRI信息或MMEC信息，以及PLMN ID信息。
第十四方面，本发明实施例提供了一种选择目标共享网络CS域和PS域运营商的方法，该方法包括：
第二核心网网元，接收目标共享网络的第一移动交换中心MSC发送的上下文请求消息，所述上下文请求信息携带第二标识，所述第二标识用于表示所述第一MSC请求获取所述UE在原网络分组交换PS域的网络资源标识NRI信息或移动管理实体编码MMEC信息，以及公共陆地移动网标识PLMN ID信息，其中，所述第二核心网网元是所述UE在切换至所述目标共享网络之前，在原网络CS域注册的核心网网元；
所述第二核心网网元根据所述上下文请求消息中的所述第二标识，向所述第一MSC发送上下文请求响应消息，所述上下文请求响应消息中携带所述UE在原网络PS域的NRI信息或MMEC信息，以及PLMN ID信息，以使得所述第一MSC根据所述UE在原网络PS域的NRI信息或MMEC信息，以及PLMN ID信息判断是否接收所述CS域的注册请求消息。
第十五方面，本发明实施例提供了一种移动交换中心MSC，所述MSC包括处理器、总线、存储器和发送器；
其中，所述处理器通过所述总线调用所述存储器中的内容，当用户设备UE通过单一无线语音呼叫连续性SRVCC或电路域回落CSFB切换至目标共享网络，所述UE在所述目标共享网络的电路交换CS域通话过程结束之前，为所述UE重分配CS域的临时移动用户标识TMSI和位置区标识LAI，其中，所述TMSI中包含CS域的网络资源标识NRI，所述CS域的NRI与所述UE在原网络分组交换PS域的全局唯一的临时标识GUTI中的移动管理实体编码MMEC相同，所述LAI包含公共陆地移动网标识PLMN ID，所述LAI中的PLMN ID与所述GUTI中的PLMN ID相同；
所述发送器，用于将所述TMSI和LAI发送至所述UE，以使所述UE在向所述目标共享网络的基站发送的CS域的注册请求消息中携带所述TMSI和所述LAI。
在第一种可能的实施方式中，结合第十五方面，其特征在于，所述MSC还包括：接收器；
所述接收器，用于接收移动管理实体MME发送的所述GUTI中的MMEC和PLMN ID，其中，所述MME是所述UE在原网络PS域所注册的核心网网元。
第十六方面，本发明实施例提供了一种用户设备UE，所述用户设备UE包括接收器、处理器，总线、存储器和发送器；
所述接收器，用于当所述UE通过单一无线语音呼叫连续性SRVCC或电路域回落CSFB切换至目标共享网络，所述UE在所述目标共享网络的电路交换CS域通话过程结束之前，UE接收目标共享网络的第一移动交换中心MSC发送的电路交换CS域的临时移动用户标识TMSI和位置区标识LAI，其中，所述TMSI中包含CS域的网络资源标识NRI，所述CS域的NRI与所述UE在原网络的分组交换PS域的全局唯一的临时移动标识GUTI中的移动管理实体编码MMEC相同，所述LAI包含公共陆地移动网标识PLMN ID，所述LAI中的PLMN ID与所述GUTI中的PLMN ID相同；
所述处理器通过所述总线调用所述存储器中的指令，生成CS域注册请求消息，所述CS域的注册请求消息中携带所述TMSI和所述LAI，并通过所述发送器将所述CS域注册请求消息发送至所述目标共享网络的基站。
第十七方面，本发明实施例提供了一种移动管理实体MME，所述MME包括处理器、总线、存储器和发送器；
所述处理器通过所述总线调用所述存储器中的指令，当用户设备UE通过单一无线语音呼叫连续性SRVCC或电路域回落CSFB切换至目标共享网络，所述UE在所述目标共享网络的电路交换CS域通话过程结束之前，向所述目标共享网络的第一移动交换中心MSC 分配所述UE在原网络的分组交换PS域的全局唯一的临时移动用户标识GUTI中的移动管理实体编码MMEC和公共陆地移动网标识PLMN ID，其中，所述MME是所述UE在原网络的PS域注册的核心网网元，以使得所述第一MSC在所述UE发送CS域的注册请求消息之前向所述UE发送CS域的临时移动用户标识TMSI和位置区标识LAI，其中，所述TMSI中包含CS域的网络资源标识NRI，所述CS域的NRI与所述GUTI中的MMEC相同，所述LAI包含PLMN ID，所述LAI中的PLMN ID与所述GUTI中的PLMN ID相同；
所述发送器，用于将所述UE在原网络的分组交换PS域的全局唯一的临时移动用户标识GUTI中的移动管理实体编码MMEC和公共陆地移动网标识PLMN ID发送至所述第一MSC。
第十八方面，本发明实施例提供了一种通用分组无线服务技术的服务支持节点SGSN，所述SGSN包括接收器、处理器、总线、存储器和发送器；
所述接收器，用于接收所述目标共享网络的基站发送的分组交换PS域的注册请求消息；
所述处理器通过所述总线调用所述存储器中的指令，生成上下文请求消息，所述上下文请求消息携带第一标识，所述第一标识用于表示所述第一SGSN请求获取所述UE在原网络电路交换CS域的网络资源标识NRI信息和公共陆地移动网标识PLMN ID信息；
所述发送器将所述上下文请求消息发送至第一核心网网元，其中，所述第一核心网网元是所述UE切换至所述目标共享网络之前，在原网络PS域所注册的核心网网元；
所述接收器还用于：接收所述第一核心网网元发送的上下文请求响应消息，所述上下文请求响应消息中携带所述UE在原网络CS域的NRI信息和PLMN ID信息；
所述处理器通过所述总线调用所述存储器中的指令，以用于根据所述UE在原网络CS域的NRI信息和PLMN ID信息，判断是否接受所述PS域的注册请求消息。
第十九方面，本发明实施例提供了一种核心网网元，所述网元包括接收器、处理器、总线、存储器和发送器；
所述接收器，用于接收目标共享网络的第一通用分组无线服务技术的服务支持节点SGSN发送的上下文请求消息，所述上下文请求信息携带第一标识，所述第一标识用于表示所述第一SGSN请求获取所述UE在原网络电路交换CS域的网络资源标识NRI信息和公共陆地移动网标识PLMN ID信息；
所述处理器通过所述总线调用所述存储器中的指令，以用于根据所述上下文请求消息中的所述第一标识，生成上下文请求响应消息，所述上下文请求响应消息中携带所述UE在原网络CS域的NRI信息和PLMN ID信息，以使得所述第一SGSN根据所述UE在原网络CS域的NRI信息和PLMN ID信息判断是否接受所述PS域的注册请求信息，并通过所述发送器将所述上下文请求响应消息发送至所述第一SGSN。
第二十方面，本发明实施例提供了一种移动交换中心MSC，所述MSC包括：接收器、处理器、总线和存储器；
所述接收器，用于接收所述目标共享网络的基站发送的电路交换CS域的注册请求消息；
所述处理器通过所述总线调用所述存储器中的指令，以用于根据发送所述CS域注册请求消息的用户设备UE在原网络分组交换PS域的网络资源标识NRI信息或移动管理实体编码MMEC信息，以及公共陆地移动网标识PLMN ID信息，判断是否接受所述CS域的注册请求消息。
在第一种可能的实施方式中，结合第二十方面，所述处理器还用于：
判断是否存储有所述UE在原网络PS域的NRI信息或MMEC信息，以及PLMN ID信息；
若没有，生成上下文请求消息，所述上下文请求消息携带第二标识，所述第二标识用于表示所述第一MSC请求获取所述UE在原 网络PS域的NRI信息或MMEC，以及PLMN ID信息；
所述发送器将所述上下文请求消息发送至第二核心网网元，其中，所述第二核心网网元是所述UE在切换至所述目标共享网络之前，在原网络CS域注册的核心网网元；
所述MSC还包括接收器，用于接收所述第二核心网网元发送的上下文请求响应消息，所述上下文请求响应消息中携带所述UE在原网络PS域的NRI信息或MMEC信息，以及PLMN ID信息。
第二十一方面，本发明实施例提供了一种核心网网元，包括：接收器、处理器、总线、存储器和发送器；
所述接收器，用于接收目标共享网络的第一移动交换中心MSC发送的上下文请求消息，所述上下文请求信息携带第二标识，所述第二标识用于表示所述第一MSC请求获取所述UE在原网络分组交换PS域的网络资源标识NRI信息或移动管理实体编码MMEC信息，以及公共陆地移动网标识PLMN ID信息；
所述处理器通过所述总线调用所述存储器中的指令，以用于根据所述上下文请求消息中的所述第二标识，生成上下文请求响应消息，所述上下文请求响应消息中携带所述UE在原网络PS域的NRI信息或MMEC信息，以及PLMN ID信息，以使得所述第一MSC根据所述UE在原网络PS域的NRI信息或MMEC信息，以及PLMN ID信息判断是否接收所述CS域的注册请求消息；
所述发送器，用于将所述上下文请求响应消息发送至所述第一MSC。
第二十二方面，本发明实施例提供了一种通信***，所述通信***包括：如第一方面和第一方面第一种可能的实施方式、十五方面和第十五方面第一种可能的实施方式中的任一项所述的移动交换中心MSC，和第二方面或第十六方面所述的用户设备UE，以及第三方面或第十七方面所述的移动管理实体MME。
第二十三方面，本发明实施例提供了一种通信***，所述通信***包括：第四方面或第十八方面所述的通用分组无线服务技术的 服务支持节点SGSN，和第五方面和第十九方面中的任一项所述的核心网网元。
第二十四方面，本发明实施例提供了一种通信***，包括第六方面至第六方面第一种可能的实施方式中的任一项，和第二十方面至第二十方面第一种可能的实施方式中的任一项所述的移动交换中心MSC，和/或第七方面和第二十一方面所述的核心网网元。
本发明实施例提供了一种选择目标共享网络CS域和PS域运营商的方法，当用户设备UE在目标共享网络进行CS域或PS域的注册时，目标共享网络侧通过所述UE在原网络PS域注册注册信息，或所UE在原网络CS域的注册信息，进行所述UE在目标共享网络PS域和CS域的注册。通过该方法，使得UE在目标共享网络侧所注册的CS域运营商与PS域运营商一致，都是所述UE在原网络侧所注册的PS域运营商或CS域运营商，或者都是所述目标共享网络的基站根据所述UE的IMSI，通过预设的策略为所述UE重选的运营商，解决了现有技术中UE在目标共享网络注册的CS域运营商和PS域运营商不一致的问题。
附图说明
为了更清楚地说明本发明实施例或现有技术中的技术方案，下面将对实施例或现有技术描述中所需要使用的附图作简单地介绍，显而易见地，下面描述中的附图仅仅是本发明的一些实施例，对于本领域普通技术人员来讲，在不付出创造性劳动的前提下，还可以根据这些附图获得其他的附图。
图1为本发明实施例提供的一种移动交换中心的示意图；
图2为本发明实施例提供的一种用户设备的示意图；
图3为本发明实施例提供的一种移动管理实体的示意图；
图4为本发明实施例提供的一种通用分组无线服务技术的服务支持节点的示意图；
图5为本发明实施例提供的一种核心网网元的示意图；
图6为本发明实施例提供的又一种移动交换中心的示意图；
图7为本发明实施例提供的又一种核心网网元的示意图；
图8为本发明实施例提供的一种计算机***示意图；
图9为本发明实施例提供的一种选择目标共享网络CS域和PS域运营商的方法流程图一；
图10本发明实施例提供的一种选择目标共享网络CS域和PS域运营商的方法流程图二；
图11为本发明实施例提供的一种SRVCC场景下选择目标共享网络CS域和PS域运营商的方法流程图；
图12为本发明实施例提供的一种被叫CSFB场景下选择目标共享网络CS域和PS域运营商的方法流程图；
图13为本发明实施例提供的一种主叫CSFB场景下选择目标共享网络CS域和PS域运营商的方法流程图；
图14为本发明实施例提供的一种选择目标共享网络CS域和PS域运营商的方法流程图三；
图15为本发明实施例提供的一种选择目标共享网络CS域和PS域运营商的方法流程图四；
图16为本发明实施例提供的一种选择目标共享网络CS域和PS域运营商的方法流程图五；
图17为本发明实施例提供的一种选择目标共享网络CS域和PS域运营商的方法流程图六；
图18为本发明实施例提供的一种选择目标共享网络CS域和PS域运营商的方法流程图七；
图19为本发明实施例提供的一种选择目标共享网络CS域和PS域运营商的方法流程图八；
图20为本发明实施例提供的一种选择目标共享网络CS域和PS域运营商的方法流程图九；
图21为本发明实施例提供的一种选择目标共享网络CS域和PS域运营商的方法流程图十；
图22为本发明实施例提供的一种图13中所示的第一MSC获取 UE在原网络PS域的注册消息的过程示意图；
图23为本发明实施例提供的一种选择目标共享网络CS域和PS域运营商的方法流程图十一；
图24为一种通信***示意图一；
图25为一种通信***示意图二；
图26为一种通信***示意图三。
具体实施方式
下面将结合本发明实施例中的附图，对本发明实施例中的技术方案进行清楚、完整地描述，显然，所描述的实施例仅仅是本发明一部分实施例，而不是全部的实施例。基于本发明中的实施例，本领域普通技术人员在没有作出创造性劳动前提下所获得的所有其他实施例，都属于本发明保护的范围。
在现有的第三代合作伙伴计划(英文：3rd Generation Partnership Project，简称：3GPP)协议中，提供了一种选择目标共享网络CS域和PS域运营商的方法，其目的在于使得用户设备UE从原网络切换至目标共享网络后，在目标共享网络中注册的CS域与PS域的运营商一致。
以在UE在原网络CS域注册过，现切换至目标共享网络，在所述目标共享网络的CS域注册过程为例进行说明。目标共享网络的核心网网元在接收到UE发送的CS域注册请求消息后，根据所述CS域注册请求消息中携带的所述UE在原网络的CS域被分配的CS域标识，若确定所述UE在原网络的CS域注册的运营商与自身所服务的运营商不同，则向目标共享网络的基站发送重新路由命令，指示所述基站为所述UE重新选择CS域核心网网元。
所述基站接收的重新路由命令中携带有核心网网元解析的所述UE在原网络CS域注册的核心网网元分配的CS域标识及IMSI信息，其中，所述UE的CS域标识包括：临时移动用户标识(英文：Temporary Mobile Subscriber Identity，简称：TMSI)中的网络资源标识(英文：Network Resource Identifier，简称：NRI)、位置区标识(英 文：Location Area Identity，简称：LAI)中的公共陆地移动网标识(英文：Public land Mobile Network identification，简称：PLMN ID)信息，所述基站根据所述UE的NRI及PLMNID可以确定所述UE在原网络CS域注册的运营商，且该运营商在目标共享网络可用时，所述基站为所述UE选择该运营商对应的核心网网元；若该运营商在目标共享网络不可用时，则所述基站根据所述UE的IMSI信息，采用预定的算法为所述UE重新选择运营商，并将UE的CS域注册请求消息发送至该运营商对应的CS域核心网网元，并指示该CS域核心网网元接受该CS域注册请求消息。
不难得出，对于UE在原网络PS域和CS域所注册的运营商不相同，且所述UE在原网络注册的CS域运营商与PS域运营商在目标共享网络至少有一个可用的情况，UE在目标共享网络PS域和CS域所注册的运营商可能不相同。例如在原网络CS域注册的运营商是运营商一，原网络PS域注册的运营商是运营商二，且只有一个运营商在目标共享网络可用，如运营商一在目标共享网络中可用，运营商二在目标共享网络中不可用，则UE在目标共享网络CS域注册的运营商为运营商一，在PS域注册的运营商是目标共享网络侧的基站根据UE的IMSI，以及预设的算法，为所述UE选择的，可能是运营商一，也可能不是运营商一。
对于UE只在原网络PS域注册过的情况，UE在目标共享网络PS域和CS域所注册的运营商可能不相同。例如注册的运营商为运营商一，且运营商一在目标共享网络可用，则UE在目标共享网络所注册的PS域运营商仍是运营商一，在CS域所注册的运营商是目标共享网络侧的基站根据UE的IMSI，以及预设的算法，为所述UE选择的，可能是运营商一，也可能不是运营商一。
综上所述，通过上述现有技术，并不能保证UE在目标共享网络所注册的CS运营商和PS运营商相同，即，通过现有技术，仍存在UE在目标共享网络CS域与PS域注册的运营商不一致的问题。
为解决上述问题，本发明实施例提出了一种选择目标共享网络 的CS域和PS域运营商的方法及相关装置，通过让目标共享网络侧根据UE在原网络PS域的注册消息，为UE选择目标共享网络的CS域运营商；或者通过让目标共享网络侧根据UE在原网络CS域的注册消息，为UE选择目标共享网络的PS域运营商，解决了现有技术中UE在目标共享网络CS域域PS域运营商不一致的问题。
结合图1，本发明实施例提供了一种MSC，包括：发送单元101；
所述发送单元101，用于当UE通过单一无线语音呼叫连续性切换(英文：Single Radio Voice Call Continuity，简称：SRVCC)或电路域回落(英文：Circuit Switched Fallback，简称CSFB)切换至目标共享网络，所述UE在所述目标共享网络的CS域通话过程结束之前，向所述UE发送CS域的TMSI和LAI，其中，所述TMSI中包含CS域的NRI，所述CS域的NRI与所述UE在原网络PS域的全局唯一的临时标识(英文：Globally Unique Temporary Identity，简称：GUTI)中的移动管理实体编码(英文：Mobility Management Entity，简称：MMEC)相同，所述LAI包含PLMN ID，所述LAI中的PLMN ID与所述GUTI中的PLMN ID相同，以使所述UE在向所述目标共享网络的基站发送的CS域的注册请求消息中携带所述TMSI和所述LAI。
进一步的，当所述第一MSC没有存储所述UE在原网络PS域的MMEC和PLMN ID时，为获取所述UE在原网络PS域的MMEC和PLMN ID，所述MSC还包括：接收单元102；
所述接收单元102，用于接收移动管理实体(英文：Mobility Management Entity，简称：MME)发送的所述GUTI中的MMEC和PLMN ID，其中，所述MME是所述UE在原网络PS域所注册的核心网网元。
可选的，所述接收单元102具体用于：
若所述UE通过SRVCC切换至所述目标共享网络，接收所述MME发送的PS域切换至CS域的切换请求消息，其中，所述切换请求消息中携带有所述GUTI中的MMEC和PLMN ID。
可选的，所述接收单元102具体用于：
若所述UE通过SRVCC切换至所述目标共享网络，接收所述MME发送的PS域切换至CS域的切换请求消息，其中，所述切换请求消息中携带有所述UE在原网络PS域的分组临时移动用户标识(英文：Packet Temporary Mobile Subscriber Identity，简称：P-TMSI)和路由区标识(英文：Routing Area Identity，简称：RAI)，所述P-TMSI中携带有所述MMEC，所述RAI中携带有所述GUTI中的PLMN ID，所述P-TMSI和所述RAI是由所述GUTI映射而来的。
可选的，所述接收单元102具体用于：
若所述UE通过CSFB切换至所述目标共享网络，在所述第一MSC向所述MME发送寻呼请求消息后，接收所述MME发送的业务请求消息，其中，所述业务请求消息用于表示所述UE的连接状态，以使得所述第一MSC停止寻呼所述UE，所述业务请求消息中携带有所述GUTI中的MMEC和PLMN ID。
可选的，所述接收单元102具体用于：
若所述UE通过CSFB切换至所述目标共享网络，在所述第一MSC向所述MME发送寻呼请求消息后，接收所述MME发送的业务请求消息，其中，所述业务请求消息用于表示所述UE的连接状态，以使得所述第一MSC停止寻呼所述UE，所述业务请求消息中携带有所述UE在原网络PS域的P-TMSI和RAI，所述P-TMSI中携带有所述MMEC，所述RAI中携带有所述GUTI中的PLMN ID，所述P-TMSI和所述RAI是由所述GUTI映射而来的。
可选的，所述接收单元102具体用于：
若所述UE通过CSFB切换至所述目标共享网络，接收所述MME发送的主叫CSFB指示消息，其中，所述主叫CSFB指示消息用于指示所述第一MSC后续接收到的业务请求消息是因主叫CSFB引起的，所述主叫CSFB指示消息中携带有所述GUTI中的MMEC和PLMN ID。
可选的，所述接收单元102具体用于：
若所述UE通过CSFB切换至所述目标共享网络，接收所述MME发送的主叫CSFB指示消息，其中，所述主叫CSFB指示消息用于指示所述第一MSC后续接收到的业务请求消息是因主叫CSFB引起的，所述主叫CSFB指示消息中携带有所述UE在原网络PS域的P-TMSI和RAI，所述P-TMSI中携带有所述MMEC，所述RAI中携带有所述GUTI中的PLMN ID，所述P-TMSI和所述RAI是由所述GUTI映射而来的。
本发明实施例本发明实施例提供了一种MSC，该MSC是位于目标共享网络的第一MSC，在用户设备UE通过SRVCC或CSFB从原LTE或4G网络的PS域接入到目标共享网络的CS域后，当所述UE通话结束之前，所述第一MSC为所述UE重分配TMSI和LAI，所述重分配的TMSI中的NRI与所述UE在原网络PS域的GUTI中的MMEC相同，LAI中的PLMN ID与所述GUTI中的PLMN ID相同。基于此，在UE在目标共享网络的CS域注册过程和PS域注册过程中，网络侧会根据所述GUTI中的MMEC和PLMN ID为所述UE选择相同的运营商，从而解决了现有技术中用户设备UE从LTE或4G网络通过SRVCC或CSFB切换至共享的2G或3G网络后，所述UE在CS域和PS域的运营商不一致的情况。并且，由于在所述UE通话过程中，所述第一MSC为所述UE分配了LAI，所述LAI中包含PLMN ID，所述UE根据所述PLMN ID就可以获取已注册PLMN(英文：Registered Public Land Mobile Network，简称：RPLMN)，从而解决了现有技术中UE从LTE或4G网络通过SRVCC或CSFB切换至共享的2G或3G网络，在话过程中没有RPLMN所带来的问题。
为解决UE在目标共享网络所注册的CS域运营商和PS域运营商不一致的问题，本发明实施例提供了一种UE，结合图2，所述UE包括：接收单元201和发送单元202；
所述接收单元201，用于当所述UE通过SRVCC或CSFB切换至目标共享网络，所述UE在所述目标共享网络的CS域通话过程结束之前，接收目标共享网络的第一MSC发送的CS域的TMSI和LAI，其中，所述TMSI中包含CS域的NRI，所述CS域的NRI与所述UE在原网络的PS域的GUTI中的MMEC相同，所述LAI包含PLMN ID，所述LAI中的PLMN ID与所述GUTI中的PLMN ID相同；
所述发送单元202，用于向所述目标共享网络的基站发送CS域的注册请求消息，所述CS域的注册请求消息中携带所述TMSI和所述LAI。
本发明实施例提供了一种用户设备UE，目标共享网络根据UE在原网络PS域的GUTI中的MMEC和PLMN ID为所述UE选择目标共享网络的CS域运营商和PS域运营商，使得UE在目标共享网络注册的CS域运营和PS域运营商相同。并且，由于在所述UE通话过程中，所述第一MSC为所述UE分配了LAI，所述LAI中包含PLMN ID，所述UE根据所述PLMN ID就可以获取RPLMN，从而解决了现有技术中UE通过SRVCC或CSFB切换至目标共享网络，在通话过程中没有RPLMN所带来的问题。
为解决UE在目标共享网络所注册的CS域运营商和PS域运营商不一致的问题，本发明实施例提供了一种移动管理实体MME，结合图3，所述MME包括：发送单元301；
所述发送单元301，用于当用户设备UE通过SRVCC或CSFB切换至目标共享网络，所述UE在所述目标共享网络的CS域通话过程结束之前，向所述目标共享网络的第一MSC发送所述UE在原网络的PS域的GUTI中的MMEC和PLMN ID，其中，所述MME是所述UE在原网络的PS域注册的核心网网元，以使得所述第一MSC在所述UE发送CS域的注册请求消息之前向所述UE发送CS域的TMSI和LAI，其中，所述TMSI中包含CS域的NRI，所述CS域的NRI与所述GUTI中的MMEC相同，所述LAI包含PLMN ID，所述 LAI中的PLMN ID与所述GUTI中的PLMN ID相同。
本发明实施例提供了一种MME，目标共享网络根据UE在原网络PS域的GUTI中的MMEC和PLMN ID为所述UE选择目标共享网络的CS域运营商和PS域运营商，使得UE在目标共享网络注册的CS域运营和PS域运营商相同。并且，由于在所述UE通话过程中，所述第一MSC为所述UE分配了LAI，所述LAI中包含PLMN ID，所述UE根据所述PLMN ID就可以获取RPLMN，从而解决了现有技术中UE从通过SRVCC或CSFB切换至目标共享网络后，在通话过程中没有RPLMN所带来的问题。
为解决UE在目标共享网络所注册的CS域运营商和PS域运营商不一致的问题，本发明实施例提供了一种通用分组无线服务技术的服务支持节点(英文：Serving GPRS SUPPORT NODE，简称：SGSN)，结合图4，所述SGSN包括：第一接收单元401、发送单元402、第二接收单元403和判断单元404；
所述第一接收单元401，用于接收所述目标共享网络的基站发送的PS域的注册请求消息；
所述发送单元402，用于向第一核心网网元发送上下文请求消息，所述上下文请求消息携带第一标识，所述第一标识用于表示所述第一SGSN请求获取所述UE在原网络CS域的NRI信息和PLMN ID信息，其中，所述第一核心网网元是所述UE切换至所述目标共享网络之前，在原网络PS域所注册的核心网网元；
所述第二接收单元403，用于接收所述第一核心网网元发送的上下文请求响应消息，所述上下文请求响应消息中携带所述UE在原网络CS域的NRI信息和PLMN ID信息；
所述判断单元404，用于根据所述UE在原网络CS域的NRI信息和PLMN ID信息，判断是否接受所述PS域的注册请求消息。
具体的，所述判断单元404用于：
判断所述UE在原网络CS域的NRI信息和PLMN ID信息所对 应的运营商是否是自身所属的运营商；
若是，接受所述PS域的注册请求消息；
所述发送单元402还用于：向所述UE发送接受响应消息；
若不是，所述发送单元402还用于：向所述基站发送重新路由消息，所述重新路由消息中携带有所述UE在原网络CS域的NRI信息、PLMN ID信息以及所述UE的IMSI信息。
本发明实施例提供了一种SGSN，所述SGSN接收到UE在PS域的注册请求消息后，并不判断是否接受所述PS域的注册请求消息或者向所述目标共享网络的基站发送重新路由命令消息，而是获取所述UE在原网络CS域的NRI和PLMN ID，在后续的PS域和CS域注册流程中，所述目标共享网络的网元根据所述UE在原CS域的NRI和PLMN ID为所述UE选择相同的CS域和PS域运营商，从而解决了现有技术中目标共享网络为用户设备UE选择的CS域运营商和PS域运营商有可能不相同的问题。
为解决UE在目标共享网络所注册的CS域运营商和PS域运营商不一致的问题，本发明实施例提供了一种核心网网元，该核心网网元是所述UE在切换至目标共享网络之前，在原网络PS域所注册的核心网网元，结合图5，包括接收单元501和发送单元502；
所述接收单元501，用于接收目标共享网络的第一SGSN发送的上下文请求消息，所述上下文请求信息携带第一标识，所述第一标识用于表示所述第一SGSN请求获取所述UE在原网络CS域的NRI信息和PLMN ID信息；
所述发送单元502，用于根据所述上下文请求消息中的所述第一标识，向所述第一SGSN发送上下文请求响应消息，所述上下文请求响应消息中携带所述UE在原网络CS域的NRI信息和PLMN ID信息，以使得所述第一SGSN根据所述UE在原网络CS域的NRI信息和PLMN ID信息判断是否接受所述PS域的注册请求信息。
进一步的，所述核心网网元在所述接收单元接收所述第一SGSN 发送的上下文请求消息之前，还需要获取所述UE在原网络CS域的NRI信息和PLMN ID信息，基于此，结合图5，所述核心网网元还包括：获取单元503；
所述获取单元503，用于取所述UE在原网络CS域的NRI信息和PLMN ID信息。
本发明实施例提供了一种核心网网元，使得目标共享网络侧根据所述UE在原网络CS域的NRI和PLMN ID为所述UE选择相同的目标共享网络CS域运营商和PS域运营商，从而解决了现有技术中目标网络为用户设备UE选择的CS域运营商和PS域运营商有可能不相同的问题。
为解决UE在目标共享网络所注册的CS域运营商和PS域运营商不一致的问题，本发明实施例提供了一种MSC，结合图6，包括第一接收单元601和第一判断单元602；
所述第一接收单元601，用于接收所述目标共享网络的基站发送的CS域的注册请求消息；
所述第一判断单元602，用于根据发送所述CS域注册请求消息的用户设备UE在原网络PS域的NRI信息或MMEC信息，以及PLMN ID信息，判断是否接受所述CS域的注册请求消息。
进一步的，若所述MSC没有存储有所述UE在原网络PS域的NRI信息或MMEC信息，以及PLMN ID信息，所述MSC还需要获取所述UE在原网络PS域的NRI信息或MMEC信息，以及PLMN ID信息，因此，结合图6，所述MSC还包括：第二判断单元603、发送单元604和第二接收单元605；
所述第二判断单元603，用于判断所述MSC是否存储有所述UE在原网络PS域的NRI信息或MMEC信息，以及PLMN ID信息；
所述发送单元604，用于接收所述第二判断单元的判断结果，若所述判断结果为所述MSC没有存储所述UE在原网络PS域的NRI信息或MMEC信息，以及PLMN ID信息，则向第二核心网网元发 送上下文请求消息，所述上下文请求消息携带第二标识，所述第二标识用于表示所述第一MSC请求获取所述UE在原网络PS域的NRI信息或MMEC，以及PLMN ID信息，其中，所述第二核心网网元是所述UE在切换至所述目标共享网络之前，在原网络CS域注册的核心网网元；
所述第二接收单元605，用于接收所述第二核心网网元发送的上下文请求响应消息，所述上下文请求响应消息中携带所述UE在原网络PS域的NRI信息或MMEC信息，以及PLMN ID信息。
具体的，所述第一判断单元1102用于：
判断所述UE在原网络PS域的NRI信息或MMEC信息，以及PLMN ID信息所对应的运营商是否是自身所属的运营商；
若是，接受所述CS域的注册请求消息；
所述发送单元1104还用于：并向所述UE发送接受响应消息；
若不是，所述发送单元1104还用于：向所述基站发送重新路由消息，所述重新路由消息中携带有所述UE在原网络PS域的NRI信息或MMEC信息、PLMN ID信息以及所述UE的IMSI信息。
本发明实施例提供了一种MSC，所述MSC接收到UE在CS域的CS域的注册请求消息后，并不判断是否接受所述CS域的注册请求消息或者向所述目标共享网络的基站发送重新路由命令消息，而是判断自身是否存储有UE在原网络PS域的注册消息，若没有，则向所述UE在原CS域注册的核心网网元发送上下文请求消息，以获得所述UE在原PS域的NRI或MMEC信息，以及PLMN ID信息，在后续的CS域和PS域注册流程中，所述目标共享网络的网元根据所述UE在原PS域的NRI/MMEC和PLMN ID为所述UE选择相同的CS域和PS域运营商，从而解决了现有技术中目标共享网络为用户设备UE选择的CS域运营商和PS域运营商有可能不相同的问题。
为解决UE在目标共享网络所注册的CS域运营商和PS域运营商不一致的问题，本发明实施例提供了一种核心网网元，该核心网 网元是UE切换至目标共享网络之前，在原网络CS域注册的核心网网元，结合图7，所述网元包括接收单元701和发送单元702；
所述接收单元701，用于接收目标共享网络的第一MSC发送的上下文请求消息，所述上下文请求信息携带第二标识，所述第二标识用于表示所述第一MSC请求获取所述UE在原网络PS域的NRI信息或MMEC信息，以及PLMN ID信息；
所述发送单元702，用于根据所述上下文请求消息中的所述第二标识，向所述第一MSC发送上下文请求响应消息，所述上下文请求响应消息中携带所述UE在原网络PS域的NRI信息或MMEC信息，以及PLMN ID信息，以使得所述第一MSC根据所述UE在原网络PS域的NRI信息或MMEC信息，以及PLMN ID信息判断是否接收所述CS域的注册请求消息。
所述第二核心网网元，在所述接收单元接收所述第一MSC发送的上下文请求消息之前，还需要获取所述UE在原网络PS域的NRI信息或MMEC信息，以及PLMN ID信息，基于此，结合图7，所述网元还包括：获取单元703；
所述获取单元703，用于获取所述UE在原网络PS域的NRI信息或MMEC信息，以及PLMN ID信息。
本发明实施例提供了一种核心网网元，使得目标共享网络根据所述UE在原网络PS域的NRI或MMEC，以及PLMN ID，为所述UE选择相同的目标共享网络的CS域运营商和PS域运营商，从而解决了现有技术中目标共享网络为用户设备UE选择的CS域运营商和PS域运营商有可能不相同的问题。
需要说明的是，结合图8，在本发明所有装置的实施例中，接收单元可以通过接收器801来实现，发送单元可以通过发送器802来实现，具体的，该网元中还包括处理器803、总线804和存储器805，其中，所述处理器803通过所述总线804调用所述存储器805中的指令，生成发送器801要发送的内容，或者对接收器802接收到的内容进行处理，以及实现装置中其他单元的功能。并且，本发 明各个相关装置的详细技术特征可参考方法的实施例，具体的，在装置实施例中不再赘述。
为解决UE在目标共享网络注册的CS域运营商与PS域运营商不一致的问题，本发明实施例提出了一种选择目标共享网络CS域和PS域运营商的方法，该方法应用于UE通过SRVCC或CSFB技术，从原LTE或4G网络切换至目标共享2G或3G网络的场景，该方法的执行主体为目标共享2G或3G网络的CS域核心网网元第一MSC，结合图9，该方法包括：
901、当UE通过SRVCC或CSFB切换至目标共享网络，所述UE在所述目标共享网络的CS域通话过程结束之前，所述目标共享网络的第一MSC向所述UE发送CS域的TMSI和LAI，其中，所述TMSI中包含CS域的NRI，所述CS域的NRI与所述UE在原网络分组交换PS域的GUTI中的MMEC相同，所述LAI包含PLMN ID，所述LAI中的PLMN ID与所述GUTI中的PLMN ID相同，以使得所述UE在向所述目标共享网络的基站发送的CS域的注册请求消息中携带所述TMSI和所述LAI。
当UE需要通过SRVCC或CSFB主叫在目标共享网络进行通话时，UE在原LTE或4G网络所注册的MME会选择一个目标共享网络的第一MSC协助所述UE在目标共享网络的通话过程；当UE需要通过CSFB被叫在目标共享网络中通话时，此时，主叫UE所在网络的网元会向UE在2G或3G网络所注册的第一MSC发送寻呼请求消息，所述第一MSC会将该寻呼请求消息发送至所述UE所注册的MME，在UE后续的被叫CSFB过程中，所述第一MSC协助所述UE完成在目标共享网络的通话过程。
需要说明的是，若UE通过SRVCC或CSFB切换至所述第一MSC，且UE在通话过程结束之前，UE无法在目标共享网络进行注册过程，只有当UE在目标共享网络的通话结束之后，UE才能在目标共享网络进行CS域的注册和PS域的注册。
UE在一个网络的注册主要可以分为两种，第一种是UE在开机后，在一个网络的CS域和PS域发起的附着过程，另一种是当UE在开机并完成附着过程后，由于移动等原因，在开机状态下需要切换至另一个网络，在另一个网络的CS域发起的位置区更新(英文：Location Area Identity，简称：LAU)过程以及PS域发起的路由区更新(英文：Routing Area Update，简称：RAU)过程。
由于在本法实施例所应用的SRVCC或CSFB场景下，UE在目标共享网络的CS域和PS域的注册分别为LAU和RAU过程。当UE在发起LAU过程之前，所述第一MSC向所述UE发送TMSI和LAI，其中，所述TMSI中的NRI与所述UE在原LTE或4G网络所注册的MME分配的GUTI中的MMEC相同，LAI中的PLMN ID与所述GUTI中的PLMN ID相同。
当UE在目标共享网络的通话结束之后，UE在目标共享网络进行CS域和PS域的注册过程，所述UE发送的CS域注册请求消息为LAU请求消息，所述LAU请求消息中携带所述第一MSC分配的TMSI和LAI，UE发送的PS域注册请求消息为RAU请求消息，所述RAU请求消息中携带所述GUTI等效映射而来的P-TMSI和RAI，其中，所述P-TMSI中的NRI与所述GUTI中的MMEC相同，所述RAI中的PLMN ID与所述GUTI中的PLMN ID相同。即LAU中的CS域NRI与PLMN ID和RAU中的PS域NRI与PLMN ID都是同一个运营商分配的，即UE在原网络PS域所注册的运营商，假设为运营商一。
此时，基站接收到UE发送的LAU请求消息后，判断是否存储有LAU请求消息中所携带的NRI与运营商的对应关系，接收到UE发送的RAU请求消息后，判断是否存储有RAU请求消息中所携带的NRI与运营商的对应关系，因为所述LAU请求消息中携带的NRI与RAU请求消息中携带的NRI相同，则若基站存储有所述NRI与运营商一的对应关系，则将所述LAU请求消息发送至与所述运营商一所对应的MSC，将所述RAU请求消息发送至与所述运营商一所 对应的SGSN，从而使得UE在目标共享网络所注册的CS域运营商和PS域运营商一致，都是运营商一。
若基站没有存储有所述NRI与运营商的对应关系，则基站接收到所述UE发送的LAU请求消息后，随机的，或者按照一定的策略，将所述LAU请求消息发送至与所述基站相连的一个MSC，假设为MSC1，基站接收到所述UE发送的RAU请求消息后，随机的，或者按照一定的策略，将所述RAU请求消息发送至与所述基站相连的一个SGSN，假设为SGSN1。MSC1接收到所述LAU请求消息后，根据所述LAU请求消息中携带的NRI和/或PLMN ID判断分配所述NRI和PLMN ID的运营商是否是自身所属的运营商，如果是，即MSC1所属的运营商即为运营商一，则MSC1接受该LAU请求，如果不是，则向基站发送重新路由命令，其中携带所述CS域NRI和PLMN ID，以及发送所述LAU请求的UE的IMSI信息，具体的，MSC1如何获取所述UE的IMSI可以有多种方式，例如直接向UE获取等，具体的，本发明实施例对此不再赘述。
若基站接收到MSC1发送的重新路由命令，所述基站首先根据所述重新路由命令中的NRI和PLMN ID判断NRI和PLMN ID所对应的运营商为运营商一，并判断运营商一在目标共享网络中是否可用，若可用，则将所述LAU请求发送至运营商一所对应的一个MSC，若不可用，则根据所述UE的IMSI，以及预设的算法，如哈希算法，为UE重选一个运营商，并将所述LAU请求发送至该运营商所对应的MSC。
相应的，SGSN1进行与MSC1相同的判断。并且，若所述运营商一在目标共享网络中不可用，则UE的IMSI是唯一的，且基站是根据相同的预设算法为UE重选的CS域和PS域运营商，因此，基站为UE所重选的CS域与PS域运营商也一定是相同的。基于此，UE在目标共享网络注册的CS域运营商和PS域运营商一定相同。
进一步的，在现有技术中，UE在一个网络注册成功后，所注册的核心网网元会为UE分配PLMN ID信息，所述UE根据该PLMN ID 获取PLMN列表，作为已注册PLMN，即RPLMN，用于后续的选网，以及在UE侧正确显示网络名称等。
然而，在现有技术中，当UE通过SRVCC或者CSFB从原LTE或4G网络切换至目标共享网络，所述UE必须在目标共享网络CS域通话结束后，才能在目标共享网络进行CS域和PS域的注册过程，获取在该目标共享网络所注册的运营商重新分配的PLMN ID，而所述UE在原LTE网络的RPLMN在目标共享网络是不可用的，因此，当UE通过SRVCC或CSFB切换至目标共享网络，并在目标共享网络的CS域通话过程结束之前，所述UE在所述目标共享网络是没有可用的RPLMN的，这将导致一些问题，如所述UE在这一阶段没有网络名称显示，或者，若所述UE在通话结束之后需要重选网络，由于无可用RPLMN，所述UE无重选网络的依据等。
在本发明中，由于UE在目标共享网络CS域通话结束之前，UE就已经接收到第一MSC重分配的LAI，所述LAI中携带有PLMN ID，所述UE根据所述PLMN ID，就可以获取在目标共享网络中可用的RPLMN，从而解决上述UE在目标共享网络CS域通话过程结束之前无RPLMN所带来的问题。
本发明实施例提供了一种选择目标共享网络CS域和PS域运营商的方法，该方法的执行主体是目标共享网络CS域的第一MSC，在用户设备UE通过SRVCC或CSFB从原LTE或4G网络的PS域接入到目标共享网络的CS域后，当所述UE通话结束之前，所述第一MSC为所述UE重分配TMSI和LAI，所述重分配的TMSI中的NRI与所述UE在原网络PS域的GUTI中的MMEC相同，LAI中的PLMN ID与所述GUTI中的PLMN ID相同。，基于此，在UE在目标共享网络的CS域注册过程或PS域注册过程中，网络侧会根据所述MMEC和所述PLMN ID为所述UE选择相同的CS域运营商和PS域运营商，从而解决了所述UE在目标共享网络注册的CS域运营商和PS域运营商不一致的问题。并且，由于在所述UE通话过程中，所述第一MSC为所述UE分配了LAI，所述LAI中包含PLMN ID， 所述UE根据所述PLMN ID就可以获取RPLMN，从而解决了现有技术中UE从LTE或4G网络通过SRVCC或CSFB切换至共享的2G或3G网络，在话过程中没有RPLMN所带来的问题。
进一步的，在所述第一MSC没有存储有所述UE在原网络注册的MME分配的GUTI中的MMEC和PLMN ID的情况下，为解决UE在目标共享网络注册的CS域运营商和PS域运营商不一致的问题，本发明实施例还提供了一种选择目标共享网络CS域和PS域运营商的方法，该方法的执行主体是所述第一MSC，结合图10，该方法包括：
1001、所述第一MSC接收MME发送的所述GUTI中的MMEC和PLMN ID，其中，所述MME是所述UE在原网络PS域所注册的核心网网元。
在UE切换至所述第一MSC之前，所述第一MSC可能已经获取到所述UE在原LTE或4G网络的MME上的注册消息，例如，为支持CSFB特性，UE在执行CSFB流程之前就已经联合注册于一个LTE或4G网络的MME和另一个2G或3G网络的MSC上了，在联合注册的场景下，MME能够获取UE在MSC上的注册消息，即UE所注册的MSC为所述UE分配的TMSI和LAI，MSC能够获取UE在MME上的注册消息，即UE在所注册的MME为所述UE分配的GUTI。当UE进行CSFB过程中，协助所述UE完成在目标共享网络的通话的第一MSC可能就是所述UE在目标共享网络注册过的MSC，此时，所述第一MSC能够获取到所述UE在原LTE或4G网络MME上的注册消息，即所述MME为所述UE分配的GUTI，所述第一MSC可以获取所述GUTI中的MMEC和PLMN ID。
并且，所述联合注册只是所述UE在原网络CS域和PS域都注册过的一种特殊情况，所述UE也可能在原网络CS域和PS域都注册过，但不是联合注册，注册时间相互独立，此时所注册的PS域核心网网元不能获知所述UE在注册的CS域核心网网元上的注册信 息，所注册的CS域核心网网元也不能获知所述UE在注册的PS域核心网网元上的注册信息。
但是，在其他场景下，所述第一MSC并不能直接获取到所述UE在原LTE或4G网络所注册的MME的注册信息，即所述MME不能直接获取到所述UE在原网络被分配的GUTI。
在这种情况下，所述第一MSC需要在所述UE在目标共享网络的CS域通话结束之前，从所述UE在原网络LTE或4G网络所注册的MME获取所述UE在原网络PS域的GUTI中的MMEC和PLMN ID信息。
1002、当用户设备UE通过SRVCC或CSFB切换至目标共享网络，所述UE在所述目标共享网络的CS域通话过程结束之前，所述目标共享网络的第一MSC向所述UE发送CS域的TMSI和LAI，其中，所述TMSI中包含CS域的NRI，所述CS域的NRI与所述UE在原网络PS域的GUTI中的MMEC相同，所述LAI包含PLMN ID，所述LAI中的PLMN ID与所述GUTI中的PLMN ID相同，以使得所述UE在向所述目标共享网络的基站发送的CS域的注册请求消息中携带所述TMSI和所述LAI。
具体的，步骤1002的详细技术特征可参见上述步骤901，本发明实施例对此不再赘述。
进一步的，可将上述步骤901和步骤902所述的方法分为三种具体的场景进行描述。
第一种场景：SRVCC场景。
当所述UE需要通过SRVCC技术切换至目标共享网络时，UE所注册的原LTE或4G网络的MME会根据自身的接口情况或自身选择策略，选择目标共享网络的第一MSC协助所述UE完成在目标共享网络的通话，并向所述第一MSC发起PS域切换至CS域的切换请求消息。所述切换请求消息中携带有所述UE在原网络PS域的GUTI中的MMEC和PLMN ID。
具体的，结合图11，包括：
1101：用户设备UE在原LTE或4G网络所注册的MME根据自身接口情况或自身的策略，选择目标共享网络的第一MSC。
1102、所述MME向所述第一MSC发送PS域切换至CS域的切换请求消息，其中，所述切换请求消息中携带有所述UE在原网络的PS域的GUTI中的MMEC和PLMN ID。
具体的，所述MME可以在向所述第一MSC发送的PS域切换至CS域的切换请求消息中，直接携带有所述UE在原网络PS域的GUTI中的MMEC和PLMN ID，所述MME也可以通过间接的方法，所述切换请求消息中携带有所述UE的P-TMSI和RAI，所述P-TMSI中携带有所述MMEC，所述RAI中携带有所述GUTI中的PLMN ID，其中，所述P-TMSI和所述RAI是由所述UE在原LTE或4G网络所注册的MME分配的GUTI映射而来的。
1103、所述第一MSC接受所述MME发送的PS域切换至CS域的切换请求消息。
1104、第一MSC为所述UE重分配TMSI和LAI，所述TMSI中的NRI为所述UE在原PS域被分配的GUTI中的MMEC，所述LAI中的PLMN ID为所述GUTI中的PLMN ID。
第二种场景：用户设备UE作为被叫所触发的CSFB流程。
在这种情况下，结合图12，包括：
1201、第一MSC接收其他网元所发送的寻呼请求消息。
具体的，所述其他网元为主叫UE所在的网络的相关网元，当所述UE作为被叫并需要通过CSFB切换到目标共享网络时，所述第一MSC接收所述其他网元发送的寻呼请求消息。
1202、所述第一MSC向被叫UE所在的MME发送寻呼请求消息。
1203、所述MME通过基站转发所述寻呼请求消息至所述被叫UE。
1204、所述MME向所述第一MSC发送业务请求消息，携带被叫UE的MMEC和PLMN ID。
所述MME向所述第一MSC发送的业务请求消息用于告知所述第一MSC所述被叫UE的连接状态，以使得所述第一MSC停止寻呼所述被叫UE。
具体的，所述MME可以在所述业务请求消息中直接携带所述UE在原网络的PS域的GUTI中的MMEC和PLMN ID，所述MME也可以通过间接的方式，在所述业务请求消息中携带有所述UE的P-TMSI和RAI，所述P-TMSI中携带有所述MMEC，所述RAI中携带有所述PLMN ID，所述P-TMSI和所述RAI是由所述GUTI映射而来的。
1205、所述被叫UE通过基站向所述MME发送业务扩展请求，触发CSFB。
1206、所述第一MSC为所述被叫UE重分配TMSI和LAI，所述TMSI中的NRI与所述MMEC相同，所述LAI中的PLMN ID与所述GUTI中的PLMN ID相同。
第三种情况：UE作为主叫所触发的CSFB流程。
在这种情况下，结合图13，包括：
1301、主叫UE向MME发送业务扩展请求消息，触发CSFB。
1302、MME向第一MSC发送主叫CSFB指示消息，所述主叫CSFB指示消息中携带有所述UE在原网络的PS域的GUTI中的MMEC和PLMN ID。
其中，所述MME向所述第一MSC发送的主叫CSFB指示消息用于指示所述第一MSC后续接收到的业务请求消息是因主叫CSFB引起的，具体的，所述MME可以直接在所述主叫CSFB指示消息中携带所述UE在原PS域的GUTI中的MMEC和PLMN ID，当然，所述MME也可以通过间接携带的方法，在所述主叫CSFB指示消息中携带有所述UE的PS域临时移动用户标识P-TMSI和路由区标识RAI，所述P-TMSI中携带有所述MMEC，所述RAI中携带有所述PLMN ID，所述P-TMSI和所述RAI是由所述GUTI映射而来的。
1303、所述第一MSC为所述被叫UE重分配TMSI和LAI，所 述TMSI中的NRI与所述MMEC相同，所述LAI中的PLMN ID与所述GUTI中的PLMN ID相同。
因此，在上述三种场景(SRVCC，被叫CSFB和主叫CSFB)下，所述UE在目标共享网络的CS域通话结束之前，即在UE在目标共享网络发起CS域注册流程之前，就可以获得所述第一MSC重分配的TMSI和LAI，其中，所述第一MSC向所述UE重分配的TMSI中的CS域的NRI信息与所述UE在原网络PS域被注册的MME分配的GUTI中的MMEC相同，所述第一MSC向所述UE重分配的LAI中的PLMN ID与所述UE在原网络PS域被注册的MME分配的GUTI中的PLMN ID相同。
所述UE在CS域发起的位置区更新请求消息中，携带所述MSC1重分配的TMSI和LAI，所述UE在PS域发起的路由区更新请求消息中，携带所述UE在原PS域被分配的GUTI映射而来的P-TMSI和RAI，其中，所述TMSI与所述P-TMSI中携带的CS域的网络资源标识和PS域的网络资源标识相同，都是所述GUTI中的MMEC，所述LAI和所述RAI中携带的PLMN ID相同，都是所述GUTI中的PLMN ID。
基于此，若所述UE在原LTE或4G网络所注册的运营商在目标共享网络中也可用，则目标共享网络为UE选择的CS域的运营商和PS域的运营商一致，都是所述UE在原LTE或4G网络所述注册的PS域的运营商，若所述UE在原LTE或4G网络所注册的运营商在目标共享网络中不可用，则目标共享网络为UE选择的CS域的运营商与PS域的运营商一致，都是基站通过预设策略，以及UE的IMSI，为所述UE重选的运营商。
本发明实施例提供了一种选择目标共享网络CS域和PS域运营商的方法，目标共享网络根据GUTI中的MMEC和PLMN ID为所述UE选择目标共享网络的CS域运营商和PS域运营商，使得UE在目标共享网络注册的CS域运营和PS域运营商相同。并且，由于在所述UE通话过程中，所述第一MSC为所述UE分配了LAI，所述LAI 中包含PLMN ID，所述UE根据所述PLMN ID就可以获取RPLMN，从而解决了现有技术中UE从LTE或4G网络通过SRVCC或CSFB切换至共享的2G或3G网络，在话过程中没有RPLMN所带来的问题。
为解决UE在目标共享网络注册的CS域运营商和PS域运营商不一致的问题，本发明实施例提供了一种选择目标共享网络CS域和PS域运营商的方法，该方法的执行主体是UE，结合图14，该方法包括：
1401、当用户设备UE通过SRVCC或CSFB切换至目标共享网络，所述UE在所述目标共享网络的CS域通话过程结束之前，所述UE接收目标共享网络的第一MSC发送的CS域的TMSI和LAI，其中，所述TMSI中包含CS域的NRI，所述CS域的NRI与所述UE在原网络的PS域的GUTI中的MMEC相同，所述LAI包含PLMN ID，所述LAI中的PLMN ID与所述GUTI中的PLMN ID相同。
1402、所述UE向所述目标共享网络的基站发送CS域的注册请求消息，所述CS域的注册请求消息中携带所述TMSI和所述LAI。
具体的，步骤2001和步骤2002的详细技术特征可参见上述第一MSC的实施例，本发明实施例对此不做赘述。
本发明实施例提供了一种选择目标共享网络CS域和PS域运营商的方法，目标共享网络根据GUTI中的MMEC和PLMN ID为所述UE选择目标共享网络的CS域运营商和PS域运营商，使得UE在目标共享网络注册的CS域运营和PS域运营商相同。并且，由于在所述UE通话过程中，所述第一MSC为所述UE分配了LAI，所述LAI中包含PLMN ID，所述UE根据所述PLMN ID就可以获取RPLMN，从而解决了现有技术中UE从LTE或4G网络通过SRVCC或CSFB切换至共享的2G或3G网络，在话过程中没有RPLMN所带来的问题。
为解决UE在目标共享网络注册的CS域运营商与PS域运营商不一致的问题，本发明实施例提供了一种选择目标共享网络CS域和PS域运营商的方法，该方法的执行主体是UE切换至目标共享网络之前，在原LTE或4G网络注册的MME，结合图15，该方法包括：
1501、当UE通过SRVCC或CSFB切换至目标共享网络，所述UE在所述目标共享网络的CS域通话过程结束之前，MME向所述目标共享网络的第一MSC发送所述UE在原网络的PS域的GUTI中的MMEC和PLMN ID，其中，所述MME是所述UE在原网络的PS域注册的核心网网元，以使得所述第一MSC在所述UE发送CS域的注册请求消息之前向所述UE发送CS域的TMSI和LAI，其中，所述TMSI中包含CS域的NRI，所述CS域的NRI与所述GUTI中的MMEC相同，所述LAI包含PLMN ID，所述LAI中的PLMN ID与所述GUTI中的PLMN ID相同。
具体的，本发明实施例的详细技术特征可参见上述第一MSC的实施例，本发明实施例对比不再赘述。
本发明实施例提供了一种选择目标共享网络CS域和PS域运营商的方法，目标共享网络根据GUTI中的MMEC和PLMN ID为所述UE选择相同的目标共享网络的CS域运营商和PS域运营商，从而解决了UE在目标共享网络注册的CS域运营商与PS域运营商不一致的问题。并且，由于在所述UE通话过程中，所述第一MSC为所述UE分配了LAI，所述LAI中包含PLMN ID，所述UE根据所述PLMN ID就可以获取RPLMN，从而解决了现有技术中UE从LTE或4G网络通过SRVCC或CSFB切换至共享的2G或3G网络，在话过程中没有RPLMN所带来的问题。
为解决UE在目标共享网络注册的CS域和PS域运营商不一致的问题，本发明实施例提供了一种选择目标共享网络CS域和PS域运营商的方法，结合图16，该方法包括：
1601、所述UE在原网络PS域所注册的MME向目标共享网络 的第一MSC发送分配给UE的GUTI中的MMEC和PLMN ID。
1602、所述第一MSC向所述UE重分配TMSI和LAI，其中，所述TMSI中的NRI与所述GUTI中的MMEC相同，所述LAI中的PLMN ID与所述GUTI中的PLMN ID相同。
1603、所述UE向所述目标共享网络的基站发送CS域的注册请求消息，其中，所述CS域的注册请求消息携带所述重分配的TMSI和LAI，所述CS域的注册请求消息为LAU请求消息。
需要说明的是，本申请中的共享网络，指的是2G或3G网络。
1604、所述基站根据所述TMSI中的NRI判断是否存储有所述NRI与运营商的对应关系。
具体的，所述基站接收到所述LAU请求消息后，并不能识别所述请求消息中所携带的LAI中的PLMN ID信息，只能识别所述TMSI中的CS域的NRI信息，并且，所述基站也不能直接根据所述CS域NRI信息判断分配所述CS域NRI的运营商是哪个运营商，只能根据所述CS域的NRI信息判断自身是否存储有所述CS域的NRI与运营商的对应关系，若有，所述基站能根据该对应关系判断UE在原网络CS域注册的运营商，若没有，基站不能判断UE在原网络CS域注册的运营商。
在某些情况下，所述基站可能存储有所述CS域的NRI与运营商的对应关系，如UE在目标共享网络的CS域注册过，假设所注册的CS域运营商为运营商一，运营商一为UE分配TMSI和LAI，该目标共享网络的基站存储有TMSI中的CS域NRI与运营商一的对应关系。当UE从注册的LTE或4G网络切换至该共享2G或3G网络时，基站接收到UE发送的LAU请求消息，所述LAU请求消息中携带运营商一分配的TMSI和LAI，基站判断存储有TMSI中的CS域NRI与运营商一的对应关系。
在另一些情况下，所述目标共享网络的基站没有存储有所述CS域NRI与运营商的对应关系，即目标共享网络的基站不能根据所述UE的LAU请求消息中的CS域的NRI信息，判断该CS域NRI是 哪个运营商分配的。
1605、若有，所述基站将所述CS域的注册请求消息发送至所述运营商对应的第二MSC。
1606、所述第二MSC接受所述CS域的注册请求消息，并向所述UE发送接受响应消息。
具体的，所述第二MSC可以获取所述LAU请求消息中的TMSI中的CS域的NRI信息，以及所述LAI中的PLMN ID信息，所述MSC1判断所述CS域的NRI信息与所述PLMN ID是自身所属的运营商分配的，所述MSC1接受所述LAU请求消息，向所述UE发送接受响应消息。
需要说明的是，由于LAU请求消息中的CS域NRI和PLMN ID一定是同一个运营商分配的，即所述UE在原网络所注册的CS域运营商分配的，因此，当第二MSC接收到所述LAU请求消息后，可以只判断LAU请求消息中的CS域NRI信息是否是自身所属的运营商分配的，也可以只判断LAU请求消息中的PLMN ID是否是自身所属运营商分配的，还可以联合判断所述CS域NRI和PLMN ID是否是自身所述运营商分配的，具体的，所述MSC1判断所述LAU请求消息中的CS域NRI和/或PLMN ID是否是自身运营商所分配的可以有多种方式，本发明实施例对此不再赘述。
1607、若没有，所述基站将所述CS域的注册请求消息发送至与所述基站相连的第三MSC，其中，所述第三MSC是与所述基站相连的MSC，所述第三MSC是所述基站根据预设策略或者随机选择的。
1608、所述第三MSC根据所述CS域的注册请求消息中的LAI中的PLMN ID或者TMSI中的NRI判断所述PLMN ID和所述NRI对应的运营商是否是自身所属的运营商。
1609、若是，所述第三MSC接受所述CS域的注册请求消息，并向所述UE发送接受响应消息。
1610、若不是，所述第三MSC向所述UE发送重新路由消息， 其中，所述重新路由消息中携带所述UE的NRI、PLMN ID和IMSI等信息。
1611、所述基站判断所述重新路由消息中的NRI和PLMN ID所对应的运营商在所述目标共享网络中是否可用。
具体的，当所述基站只能获取所述CS域的NRI信息时，若基站没有存储有TMSI中的NRI与运营商的对应关系，所述基站无法只根据所述CS域的NRI信息判断分配所述CS域的NRI信息的运营商是哪个运营商，当所述基站同时获取所述CS域的NRI信息和所述PLMN ID信息时，所述基站可以结合这两者判断分配所述CS域的NRI信息与所述PLMN ID信息的运营商是哪一个运营商，即UE在原网络CS域注册的运营商是什么，以及该运营商在所述目标共享网络是否可用。
1612、若可用，所述基站将所述CS域的注册请求消息发送至所述运营商所对应的第四MSC。
举例来说，所述基站根据所述CS域的NRI信息和所述PLMN ID信息，判断分配所述CS域的NRI信息和所述PLMN ID信息的运营商为运营商一，则所述基站将所述LAU请求消息发送至运营商一所对应的第四MSC，所述第四MSC接受所述LAU请求消息并向所述UE发送接受响应消息。
第四MSC可以通过判断所述请求消息中的CS域NRI和PLMN ID所对应的运营商是所述第四MSC所属的运营商而接受该请求消息，另外的，所述基站在发送LAU请求消息时也可以在该消息中携带所述UE的IMSI，表明已经进行过重新路由流程，所述第四MSC根据所述请求消息中的IMSI直接接受该请求消息，或者所述基站在发送LAU请求消息中携带指示所述第四MSC接受该LAU请求消息的指令，可以理解的是，第四MSC接受所述LAU请求消息的过程可以有多种，本发明实施例对此不再赘述。
1613、所述第四MSC接受所述CS域的注册请求消息，并向所述UE发送接受响应消息。
1614、若不可用，所述基站根据所述UE的IMSI，为所述UE重选一个CS域运营商。
举例来说，所述基站根据所述UE的IMSI，通过哈希算法，为所述UE重选一个CS域运营商，假设为运营商二，并将所述LAU请求消息发送至所述运营商所对应的MSC，并指示该MSC接受该LAU请求消息，该MSC接受LAU请求消息后，向UE发送一个接受响应消息
在图16中，UE在PS域的注册过程并未体现出来，UE在PS域的PS域注册过程中，网络侧根据所述MME为所述UE分配的GUTI中的MMEC和PLMN ID为所述UE选择CS域运营商，选择过程可参考步骤1603至1604，不同的是，接受所述UE的PS域注册请求消息的核心网网元是目标共享网络的SGSN。
目标共享网络根据GUTI中的MMEC和PLMN ID为所述UE选择相同的目标共享网络的CS域运营商和PS域运营商，从而解决了UE在目标共享网络注册的CS域运营商域PS域运营不一致的问题。并且，由于在所述UE通话过程中，所述第一MSC为所述UE分配了LAI，所述LAI中包含PLMN ID，所述UE根据所述PLMN ID就可以获取RPLMN，从而解决了现有技术中UE从LTE或4G网络通过SRVCC或CSFB切换至共享的2G或3G网络，在话过程中没有RPLMN所带来的问题。
针对用户设备UE从原网络切换至目标共享网络后，在所述目标共享网络CS域和PS域注册的运营商不一致的问题，本发明实施例提供了一种选择目标共享网络CS域和PS域运营商的方法，该方法的执行主体是目标共享网络的第一SGSN，该方法应用的场景是用户设备UE在原网络的PS域和CS域联合注册过的场景，结合图17，该方法包括：
1701、目标共享网络的第一SGSN接收所述目标共享网络的基站发送的PS域的注册请求消息。
具体的，所述PS域的注册请求消息是所述UE在目标共享网络发送的PS域注册请求消息，可以是RAU请求消息，也可以是PS域的附着请求消息。
1702、所述第一SGSN向第一核心网网元发送上下文请求消息，所述上下文请求消息携带第一标识，所述第一标识用于表示所述第一SGSN请求获取所述UE在原网络CS域的NRI信息和PLMN ID信息，其中，所述第一核心网网元是所述UE切换至所述目标共享网络之前，在原网络PS域所注册的核心网网元。
当所述第一SGSN接收到所述PS域的注册请求消息后，所述第一SGSN并不判断是否接受所述PS域的注册请求消息或向所述共享网络的基站发送重新路由命令，所述第一SGSN向所述第一核心网网元发送上下文请求信息，所述上下文请求信息携带第一标识，所述第一标识用于表示所述第一SGSN请求获取所述UE在原网络CS域的NRI信息和PLMN ID信息。
需要说明的是，所述联合注册，指的是用户设备UE在LTE或4G网络的PS域注册后，所注册的MME触发2G或3G网络的一个MSC完成UE在该2G或3G网络的CS域的注册过程；或者指的是用户设备UE在一个2G或3G网络的PS域注册后，所述注册的SGSN触发该网络的一个MSC完成UE在该网络的CS域注册过程。在联合注册的情况下，联合注册的MME或SGSN能够获知所述UE在MSC上的注册消息，例如MSC为UE分配的TMSI和LAI信息，联合注册的MSC也能获取UE在MME或SGSN上的注册消息，如MME为UE分配的GUTI，或SGSN为UE分配的P-TMSI和RAI。
具体的，在联合注册的过程中，所注册的CS域核心网网元如何获取所注册的PS域核心网网元的注册消息，以及所注册的PS域核心网网元如何获取所注册的CS域核心网网元的注册消息，本发明实施例对此不再赘述。
1703、所述第一SGSN接收所述第一核心网网元发送的上下文请求响应消息，所述上下文请求响应消息中携带所述UE在原网络 CS域的NRI信息和PLMN ID信息。
1704、所述第一SGSN根据所述UE在原网络CS域的NRI信息和PLMN ID信息，判断是否接受所述PS域的注册请求消息。
具体的，所述第一SGSN判断所述UE在原网络CS域的NRI信息和PLMN ID信息所对应的运营商是否是自身所属的运营商。
若是，所述第一SGSN接受所述PS域的注册请求消息，并向所述UE发送接受响应消息。若不是，所述第一SGSN向所述基站发送重新路由消息，所述重新路由消息中携带有所述UE在原网络CS域的NRI信息、PLMN ID信息以及所述UE的IMSI信息。
具体的，所述第一SGSN向所述基站发送重新路由命令消息，以使得所述基站根据所述重新路由命令消息中的所述UE在原CS域的NRI和PLMN ID为所述UE选择所述NRI和PLMN ID对应的运营商，或使得所述基站根据所述UE的IMSI为所述UE重选运营商。
由此可知，若所述UE在原CS域注册的运营商在目标共享网络可用，所述UE在目标共享网络注册的运营商都是所述UE在原网络CS域所注册的运营商；若所述UE在原网络CS域所注册的运营商在目标共享网络不可用，所述UE在目标共享网络注册的运营商都是目标共享网络的基站根据所述UE的IMSI，以及预设的算法，为所述UE重选的运营商。
本发明实施例提供了一种选择目标共享网络CS域和PS域运营商的方法，在该方法中，目标共享网络的PS域的第一SGSN接收到UE在PS域的注册请求消息后，向第一核心网网元发送上下文请求消息，以获得所述UE在原CS域的NRI和PLMN ID，在后续的PS域和CS域注册流程中，所述目标共享网络的网元根据所述UE在原CS域的NRI和PLMN ID为所述UE选择相同的PS域和CS域运营商，从而解决了现有技术中目标共享网络为用户设备UE选择的CS域运营商和PS域运营商有可能不相同的问题。
本发明实施例提供了一种选择目标共享网络CS域和PS域运营 商的方法，该方法的执行主体是第一核心网网元，所述第一核心网网元是UE切换至目标共享网络之前，在原PS域注册的核心网网元，结合图18，该方法包括：
1801、第一核心网网元接收目标共享网络的第一SGSN发送的上下文请求消息，所述上下文请求信息携带第一标识，所述第一标识用于表示所述第一SGSN请求获取所述UE在原网络CS域的NRI信息和PLMN ID信息，其中，所述第一核心网网元是所述UE切换至目标共享网络之前，在原网络PS域注册的核心网网元。
1802、所述第一核心网网元根据所述上下文请求消息中的所述第一标识，向所述第一SGSN发送上下文请求响应消息，所述上下文请求响应消息中携带所述UE在原网络CS域的NRI信息和PLMN ID信息，以使得所述第一SGSN根据所述UE在原网络CS域的NRI信息和PLMN ID信息判断是否接受所述PS域的注册请求信息。
具体的，所述第一核心网网元在接收所述第一SGSN发送的上下文请求消息之前，需要通过联合注册获取所述UE在原网络CS域的NRI信息和PLMN ID信息。
本发明实施例的详细技术特征可参见上述第一SGSN的实施例，本发明实施例对此不再赘述。
本发明实施例提供了一种核心网网元，目标共享网络侧根据所述UE在原网络CS域的NRI和PLMN ID为所述UE选择相同的目标共享网络CS域运营商和PS域运营商，从而解决了现有技术中目标网络为用户设备UE选择的CS域运营商和PS域运营商有可能不相同的问题。
为解决UE在目标共享网络注册的CS域运营商与PS域运营商不一致的问题，本发明实施例提供了一种选择目标共享网络CS域和PS域运营商的方法，结合图19，该方法包括：
1901、UE向目标共享网络的基站发送PS域的注册请求消息，其中，所述PS域的注册请求消息为附着请求消息或者路由区更新 RAU请求消息。
1902、所述基站将所述PS域的注册请求消息发送至所述目标共享网络的第一SGSN。
1903、所述第一SGSN向第一核心网网元发送上下文请求消息，所述上下文请求信息携带第二标识，所述第二标识用于表示所述第一SGSN请求获取所述UE在原网络CS域的NRI信息和PLMN ID信息。
可以用第二SGSN或MME表示所述第一核心网网元。
1904、所述第一核心网网元向所述第一SGSN发送上下文请求响应消息，所述上下文请求响应消息中携带所述UE在原网络CS域的NRI信息和PLMN ID信息。
1905、所述第一SGSN判断所述UE在原网络CS域的NRI信息和PLMN ID信息所对应的运营商是否是自身所属的运营商。
1906、若是，所述第一SGSN接受所述PS域的注册请求消息，并向所述UE发送接受响应消息。
1907、若不是，所述第一SGSN向所述基站发送重新路由消息，所述重新路由消息中携带有所述UE在原网络CS域的NRI信息、PLMN ID信息以及所述UE的IMSI信息。
1908、所述基站判断所述NRI和所述PLMN ID所对应的运营商是否是所述目标共享网络的运营商。
1909、若是，所述基站为所述UE选择所述运营商所对应的第三SGSN，并向所述第三SGSN发送所述PS域的注册请求消息。
1910、所述第三SGSN接受所述PS域的注册请求消息并向所述UE发送接受响应消息。
1911、若不是，所述基站根据所述UE的IMSI，为所述UE重选PS域运营商。
具体的，步骤1901至步骤1911的具体实施方式，可参见上述第一SGSN的实施例，本发明实施例对此不再赘述。
在图19中，UE在CS域的注册过程并未体现出来，UE在目标 共享网络的CS域注册过程中，目标共享网络根据所述UE在原网络CS域的NRI信息和PLMN ID信息为所述UE选择CS域运营商。
本发明实施例提供了一种选择目标共享网络CS域和PS域运营商的方法，通过该方法，所述基站依据所述UE在原CS域的NRI和PLMN ID为所述UE选择相同的CS域运营商和PS域运营商，从而解决了现有技术中目标网络为用户设备UE所选择的CS域和PS域运营商有可能不一致的问题。
为解决UE在目标共享网络注册的CS域运营商与PS域运营商不一致的问题，本发明实施例提供了一种选择目标共享网络CS域和PS域运营商的方法，该方法的执行主体是目标共享网络的第一MSC，结合图20，该方法包括：
2001、目标共享网络的第一MSC接收所述目标共享网络的基站发送的CS域的注册请求消息。
具体的，所述CS域的注册请求消息是所述UE在目标共享网络发送的CS域注册请求消息，可以是LAU请求消息，也可以是CS域的附着请求消息。
2002、所述第一MSC根据发送所述CS域注册请求消息的用户设备UE在原网络分组交换PS域的NRI信息或MMEC信息，以及PLMN ID信息，判断是否接受所述CS域的注册请求消息。
需要说明的是，由于LTE或4G网络正在建设初期，因此，一般情况下，LTE或4G网络只支持数据业务，而用户的通话业务仍需退回到传统的2G或者3G网络进行。此时，存在这种情况，UE可能在一个LTE或4G网络的MME，和一个共享2G或3G网络的MSC联合注册过，在注册时，所注册的MME为UE分配GUTI，所注册的MSC为UE分配TMSI和LAI，其中，TMSI中包含CS域NRI信息，LAI中包含PLMN ID信息，MSC所在网络的基站会存储所述NRI与MSC所属运营商的对应关系。当UE从所述LTE或4G网络切换至所注册的2G或3G网络后，在该网络内发起CS域和PS域的 注册过程，当基站接收到该CS域注册请求消息后，根据TMSI中的NRI信息，可以判断出所述NRI与运营商的对应关系，并将该CS域注册请求消息发送至该运营商所对应的MSC，即接收到UE发送的CS域注册请求信息的第一MSC可能正是UE之前在所注册的MSC。
此时，第一MSC接收到UE发送的CS域注册请求消息后，由于在联合注册的过程中，第一MSC已经获取到UE在MME上的注册消息，即MME为UE分配的GUTI中的MMEC和PLMN ID，所述第一MSC根据所述MMEC和PLMN ID，判断是否接受UE发送的CS域注册请求消息。
具体的，所述第一MSC判断所述UE在原网络PS域的＝MMEC信息，以及PLMN ID信息所对应的运营商是否是自身所属的运营商；
若是，所述第一MSC接受所述CS域的注册请求消息，并向所述UE发送接受响应消息；
若不是，所述第一MSC向所述基站发送重新路由消息，所述重新路由消息中携带有所述UE在原网络PS域的MMEC信息、PLMN ID信息以及所述UE的国际移动用户识别码IMSI信息。
进一步的，在其他场景下，或者在上述场景下，但接收所述第一MSC不是UE之前联合注册的MSC，则第一MSC在接收到CS域注册请求后，需要向UE在原网络CS域注册的MSC获取所述UE在原网络PS域的NRI或MMEC信息，以及PLMN ID信息，具体的，获取过程可参见图21，包括：
2101、所述第一MSC判断是否存储有所述UE在原网络PS域的NRI信息或MMEC信息，以及PLMN ID信息。
2102、若没有，所述所述第一MSC向第二核心网网元发送上下文请求消息，所述上下文请求消息携带第二标识，所述第二标识用于表示所述第一MSC请求获取所述UE在原网络PS域的NRI信息或MMEC，以及PLMN ID信息，其中，所述第二核心网网元是所述 UE在切换至所述目标共享网络之前，在原网络CS域注册的核心网网元。
当所述第一MSC接收到所述CS域的注册请求消息后，所述第一MSC并不判断是否接受所述CS域的注册请求消息或向所述目标共享网络的基站发送重新路由命令，所述第一MSC判断没有存储有所述UE在原网络PS域的NRI信息或MMEC信息，以及PLMN ID信息后，所述第一MSC向所述第二核心网网元发送上下文请求信息，所述上下文请求信息携带第二标识，所述第二标识用于表示所述第一MSC请求获取所述UE在原网络PS域的NRI信息或MMEC信息，以及PLMN ID信息。
2103、所述第一MSC接收所述第二核心网网元发送的上下文请求响应消息，所述上下文请求响应消息中携带所述UE在原网络PS域的NRI信息或MMEC信息，以及PLMN ID信息。
由于UE在原网络的CS域和PS域联合注册的情况下，所述第二核心网网元能够获取到所述UE在原网络PS域注册的MME或SGSN上的注册消息，即所述第二核心网网元能够获取到所述UE在原网络注册的MME分配的GUTI或SGSN分配的P-TMSI和RAI。
所述第二核心网网元会根据所述第二标识，向所述第一MSC发送一个上下文请求响应信息，所述上下文请求响应信息中携带所述UE在原网络PS域的P-TMSI和RAI信息，或GUTI中的MMEC和PLMN ID信息。
进一步的，所述第一MSC判断所述UE在原网络PS域的NRI信息或MMEC信息，以及PLMN ID信息所对应的运营商是否是自身所属的运营商。
若是，所述第一MSC接受所述CS域的注册请求消息，并向所述UE发送接受响应消息。
若不是，所述第一MSC向所述基站发送重新路由消息，所述重新路由消息中携带有所述UE在原网络PS域的NRI信息或MMEC信息、PLMN ID信息以及所述UE的IMSI信息。
具体的，所述第一MSC向所述基站发送重新路由命令消息，以使得所述基站根据所述重新路由命令消息中的所述UE在原网络PS域的NRI信息或MMEC信息，以及PLMN ID为所述UE选择对应的运营商，或使得所述基站根据所述UE的IMSI为所述UE重选运营商。
由此可知，若所述UE在原PS域注册的运营商在目标共享网络可用，所述目标共享网络为所述UE在CS域选择的运营商和在PS域选择的运营商都是所述UE在原网络PS域所注册的运营商；若所述UE在原网络PS域所注册的运营商在目标共享网络不可用，所述基站无论在UE的CS域注册过程，还是在所述UE的PS域注册过程，都会根据所述UE的IMSI为所述UE重新选择运营商，由于UE的IMSI是唯一的，重选策略是一致的(例如都是IMSI哈希算法)，因此重选的PS域和CS域的运营商也是一致的。
本发明实施例提供了一种选择目标共享网络CS域和PS域运营商的方法，在该方法中，目标共享网络的PS域的第一MSC接收到UE在CS域的CS域的注册请求消息后，判断自身是否存储有UE在原网络PS域的注册消息，若没有，则向第二核心网网元发送上下文请求消息，以获得所述UE在原PS域的NRI或MMEC信息，以及PLMN ID信息，在后续的CS域和PS域注册流程中，所述目标共享网络的网元根据所述UE在原网络PS域的NRI/MMEC和PLMN ID为所述UE选择CS域运营商和PS域运营商，使得UE在目标共享网络注册的运营商相同，都是在原网络PS域注册的运营商，或都是目标共享网络基站为所述UE重选的运营商。从而解决了现有技术中目标共享网络为用户设备UE选择的CS域运营商和PS域运营商有可能不相同的问题。
为解决UE在目标共享网络注册的CS域运营商与PS域运营商不一致的问题，本发明实施例提供了一种选择目标共享网络CS域和PS域运营商的方法，该方法的执行主体是第二核心网网元，其中， 所述第二核心网网元是所述UE在切换至所述目标共享网络之前，在原网络CS域注册的核心网网元，结合图22，该方法包括：
2201、在目标共享网络发送CS域的注册请求消息的第二核心网网元，接收目标共享网络的第一MSC发送的上下文请求消息，所述上下文请求信息携带第二标识，所述第二标识用于表示所述第一MSC请求获取所述UE在原网络PS域的NRI信息或MMEC信息，以及PLMN ID信息。
2202、所述第二核心网网元根据所述上下文请求消息中的所述第二标识，向所述第一MSC发送上下文请求响应消息，所述上下文请求响应消息中携带所述UE在原网络PS域的NRI信息或MMEC信息，以及PLMN ID信息，以使得所述第一MSC根据所述UE在原网络PS域的NRI信息或MMEC信息，以及PLMN ID信息判断是否接收所述CS域的注册请求消息。
具体的，所述第二核心网网元在接收到该上下文请求消息之前，在联合注册的过程中获取到UE在原网络PS域的注册消息，即所注册的MME为UE分配的GUTI中的MMEC和PLMN ID信息，或所注册的SGSN为UE分配的P-TMSI中的NRI信息和RAI中的PLMN ID信息。
具体的，本发明实施例的详细技术特征可参见上述图21所对应的第一MSC的实施例，本发明实施例对此不再赘述。
本发明实施例提供了一种选择目标共享网络CS域和PS域运营商的方法，目标共享网络根据所述UE在原网络PS域的NRI或MMEC，以及PLMN ID，为所述UE选择相同的目标共享网络的CS域运营商和PS域运营商，从而解决了现有技术中目标共享网络为用户设备UE选择的CS域运营商和PS域运营商有可能不相同的问题。
为解决UE在目标共享网络注册的CS域运营商与PS域运营商不一致的问题，本发明实施例提供了一种选择目标共享网络CS域和PS域运营商的方法，结合图23，该方法包括：
2301、用户设备UE向目标共享网络的基站发送CS域的注册请求消息，其中，所述CS域的注册请求消息为附着请求消息或者LAU请求消息。
2302、所述基站将所述CS域的注册请求消息发送至所述目标共享网络的第一MSC。
2303、所述第一MSC判断是否存储有所述UE在原网络PS域的注册消息，若没有，所述第一MSC向第二核心网网元发送上下文请求消息，所述上下文请求信息携带第一标识，所述第一标识用于表示所述第一MSC请求获取所述UE在原网络PS域的NRI或MMEC信息，以及PLMN ID信息。
在本发明实施例中，所述第二核心网网元用第二MSC表示。
2304、所述第二核心网网元向所述第一MSC发送上下文请求响应消息，所述上下文请求响应消息中携带所述UE在原网络PS域的NRI信息或MMEC信息，以及PLMN ID信息。
2305、所述第一MSC判断所述UE在原网络PS域的NRI或MMEC，以及PLMN ID信息所对应的运营商是否是自身所属的运营商。
2306、若是，所述第一MSC接受所述CS域的注册请求消息，并向所述UE发送接受响应消息。
2307、若不是，所述第一MSC向所述基站发送重新路由消息，所述重新路由消息中携带有所述UE在原网络PS域的NRI或MMEC、PLMN ID信息以及所述UE的IMSI信息。
2308、所述基站判断所述NRI或MMEC，以及所述PLMN ID所对应的运营商是否是所述目标共享网络的运营商。
2309、若是，所述基站为所述UE选择所述运营商所对应的第三MSC，并向所述第三MSC发送所述CS域的注册请求消息。
2310、所述第三MSC接受所述CS域的注册请求消息并向所述UE发送接受响应消息。
2311、若不是，所述基站根据所述UE的IMSI，为所述UE重 选CS域运营商。
具体的，步骤2301至步骤2311的具体实施方式，可参见上述第一MSC的实施例，本发明实施例对此不再赘述。
图23所示的实施例中并没有表示出UE在目标共享网络的PS域注册过程，具体的，目标共享网络侧根据所述UE在原网络PS域的NRI或MMEC，以及PLMN ID为所述UE选择PS域的运营商。
本发明实施例提供了一种选择目标共享网络CS域和PS域运营商的方法，目标共享网络根据所述UE在原网络PS域的NRI或MMEC，以及PLMN ID，为所述UE选择相同的目标共享网络的CS域运营商和PS域运营商，从而解决了现有技术中目标共享网络为用户设备UE选择的CS域运营商和PS域运营商有可能不相同的问题。
进一步的，为解决UE在目标共享网络注册的CS域运营商与PS域运营商不一致的问题，结合图24，本发明实施例提供了一种通信***，该***应用于UE通过SRVCC或CSFB切换至目标共享网络的场景，具体的，所述LTE/4G网络和所述目标共享网络可以是重叠的，也可以是不重叠的，本发明实施例对此不做限定。
该通信***包括MSC、UE和MME。本通信***中的MSC的详细技术特征可参见图1以及图9-图13中的任一幅所对应的实施例，UE的详细技术特征可参见图2和图14中的任一幅所对应的实施例，MME的详细技术特征可参见图3和图15中任一幅所对应的实施例，本发明实施例对此不再赘述。
可选的，结合图25，本发明实施例还提供了一种通信***，该通信***包括目标共享网络的SGSN和第一核心网网元，所述第一核心网网元是所述UE切换至目标共享网络之前，在原网络PS域注册的核心网网元，该***应用于UE在原网络CS域域PS域联合注册的场景。
具体的，所述SGSN的详细技术特征可参见图4和图17中任一幅所对应的实施例，所述第二核心网网元的详细技术特征可参见图 5和图18中任一幅所对应的实施例，本发明实施例对此不再赘述。
可选的，结合图26，本发明实施例还提供了一种通信***，该通信***应用于UE在原网络CS域和PS域联合注册的场景，该通信***包括：MSC和第二核心网网元。具体的，在图26描述的通信***中，原网络与目标共享网络可以重叠，也可以不重叠，本发明实施例对此不做限定。
具体的，所述MSC的详细技术特征可参见图6、图20和图21中的任一幅所对应的实施例，所述第二核心网网元的详细技术特征可参见图7和图22中的任一幅所对应的实施例，本发明实施例对此不再赘述。
本发明实施例提供了一种通信***，通过UE在原网络PS域的注册信息，包括PS域NRI或MMEC，以及PLMN ID为所述UE选择目标共享网络的CS域运营商和PS域运营商，或通过UE在原网络CS域的注册信息，包括CS域NRI和PLMN ID，为所述UE选择目标共享网络的CS域运营商和PS域运营商，使得UE在目标共享网络注册的CS域运营商和PS域运营商相同，从而解决了UE在目标共享网络注册的CS域运营商和PS域运营商不一致的问题。
以上所述，仅为本发明的具体实施方式，但本发明的保护范围并不局限于此，任何熟悉本技术领域的技术人员在本发明揭露的技术范围内，可轻易想到变化或替换，都应涵盖在本发明的保护范围之内。因此，本发明的保护范围应所述以权利要求的保护范围为准。

Claims (41)

  1. 一种移动交换中心MSC，其特征在于，所述MSC包括：发送单元；
    所述发送单元，用于当用户设备UE通过单一无线语音呼叫连续性SRVCC或电路域回落CSFB切换至目标共享网络，所述UE在所述目标共享网络的电路交换CS域通话过程结束之前，向所述UE发送CS域的临时移动用户标识TMSI和位置区标识LAI，其中，所述TMSI中包含CS域的网络资源标识NRI，所述CS域的NRI与所述UE在原网络分组交换PS域的全局唯一的临时标识GUTI中的移动管理实体编码MMEC相同，所述LAI包含公共陆地移动网标识PLMN ID，所述LAI中的PLMN ID与所述GUTI中的PLMN ID相同，以使所述UE在向所述目标共享网络的基站发送的CS域的注册请求消息中携带所述TMSI和所述LAI。
  2. 根据权利要求1所述的MSC，其特征在于，所述MSC还包括：接收单元；
    所述接收单元，用于接收移动管理实体MME发送的所述GUTI中的MMEC和PLMN ID，其中，所述MME是所述UE在原网络PS域所注册的核心网网元。
  3. 根据权利要求2所述的MSC，其特征在于，所述接收单元具体用于：
    若所述UE通过SRVCC切换至所述目标共享网络，接收所述MME发送的PS域切换至CS域的切换请求消息，其中，所述切换请求消息中携带有所述GUTI中的MMEC和PLMN ID。
  4. 根据权利要求2所述的MSC，其特征在于，所述接收单元具体用于：
    若所述UE通过SRVCC切换至所述目标共享网络，接收所述MME发送的PS域切换至CS域的切换请求消息，其中，所述切换请求消息中携带有所述UE在原网络PS域的分组临时移动用户标识P-TMSI和路由区标识RAI，所述P-TMSI中携带有所述MMEC，所 述RAI中携带有所述GUTI中的PLMN ID，所述P-TMSI和所述RAI是由所述GUTI映射而来的。
  5. 根据权利要求2所述的MSC，其特征在于，所述接收单元具体用于：
    若所述UE通过CSFB切换至所述目标共享网络，在所述第一MSC向所述MME发送寻呼请求消息后，接收所述MME发送的业务请求消息，其中，所述业务请求消息用于表示所述UE的连接状态，以使得所述第一MSC停止寻呼所述UE，所述业务请求消息中携带有所述GUTI中的MMEC和PLMN ID。
  6. 根据权利要求2所述的MSC，其特征在于，所述接收单元具体用于：
    若所述UE通过CSFB切换至所述目标共享网络，在所述第一MSC向所述MME发送寻呼请求消息后，接收所述MME发送的业务请求消息，其中，所述业务请求消息用于表示所述UE的连接状态，以使得所述第一MSC停止寻呼所述UE，所述业务请求消息中携带有所述UE在原网络PS域的P-TMSI和RAI，所述P-TMSI中携带有所述MMEC，所述RAI中携带有所述GUTI中的PLMN ID，所述P-TMSI和所述RAI是由所述GUTI映射而来的。
  7. 根据权利要求2所述的MSC，其特征在于，所述接收单元具体用于：
    若所述UE通过CSFB切换至所述目标共享网络，接收所述MME发送的主叫CSFB指示消息，其中，所述主叫CSFB指示消息用于指示所述第一MSC后续接收到的业务请求消息是因主叫CSFB引起的，所述主叫CSFB指示消息中携带有所述GUTI中的MMEC和PLMN ID。
  8. 根据权利要求2所述的MSC，其特征在于，所述接收单元具体用于：
    若所述UE通过CSFB切换至所述目标共享网络，接收所述MME发送的主叫CSFB指示消息，其中，所述主叫CSFB指示消息用于指 示所述第一MSC后续接收到的业务请求消息是因主叫CSFB引起的，所述主叫CSFB指示消息中携带有所述UE在原网络PS域的P-TMSI和RAI，所述P-TMSI中携带有所述MMEC，所述RAI中携带有所述GUTI中的PLMN ID，所述P-TMSI和所述RAI是由所述GUTI映射而来的。
  9. 一种用户设备UE，其特征在于，所述UE包括：接收单元和发送单元；
    所述接收单元，用于当所述UE通过单一无线语音呼叫连续性SRVCC或电路域回落CSFB切换至目标共享网络，所述UE在所述目标共享网络的电路交换CS域通话过程结束之前，接收目标共享网络的第一移动交换中心MSC发送的电路交换CS域的临时移动用户标识TMSI和位置区标识LAI，其中，所述TMSI中包含CS域的网络资源标识NRI，所述CS域的NRI与所述UE在原网络的分组交换PS域的全局唯一的临时移动标识GUTI中的移动管理实体编码MMEC相同，所述LAI包含公共陆地移动网标识PLMN ID，所述LAI中的PLMN ID与所述GUTI中的PLMN ID相同；
    所述发送单元，用于向所述目标共享网络的基站发送CS域的注册请求消息，所述CS域的注册请求消息中携带所述TMSI和所述LAI。
  10. 一种移动管理实体MME，其特征在于，所述MME包括：发送单元；
    所述发送单元，用于当用户设备UE通过单一无线语音呼叫连续性SRVCC或电路域回落CSFB切换至目标共享网络，所述UE在所述目标共享网络的电路交换CS域通话过程结束之前，向所述目标共享网络的第一移动交换中心MSC发送所述UE在原网络的分组交换PS域的全局唯一的临时移动用户标识GUTI中的移动管理实体编码MMEC和公共陆地移动网标识PLMN ID，其中，所述MME是所述UE在原网络的PS域注册的核心网网元，以使得所述第一MSC在所述UE发送CS域的注册请求消息之前向所述UE发送CS域的临时移 动用户标识TMSI和位置区标识LAI，其中，所述TMSI中包含CS域的网络资源标识NRI，所述CS域的NRI与所述GUTI中的MMEC相同，所述LAI包含PLMN ID，所述LAI中的PLMN ID与所述GUTI中的PLMN ID相同。
  11. 一种通用分组无线服务技术的服务支持节点SGSN，其特征在于，所述SGSN包括：第一接收单元、发送单元、第二接收单元和判断单元；
    所述第一接收单元，用于接收所述目标共享网络的基站发送的分组交换PS域的注册请求消息；
    所述发送单元，用于向第一核心网网元发送上下文请求消息，所述上下文请求消息携带第一标识，所述第一标识用于表示所述第一SGSN请求获取所述UE在原网络电路交换CS域的网络资源标识NRI信息和公共陆地移动网标识PLMN ID信息，其中，所述第一核心网网元是所述UE切换至所述目标共享网络之前，在原网络PS域所注册的核心网网元；
    所述第二接收单元，用于接收所述第一核心网网元发送的上下文请求响应消息，所述上下文请求响应消息中携带所述UE在原网络CS域的NRI信息和PLMN ID信息；
    所述判断单元，用于根据所述UE在原网络CS域的NRI信息和PLMN ID信息，判断是否接受所述PS域的注册请求消息。
  12. 根据权利要求11所述的SGSN，其特征在于，所述判断单元具体用于：
    判断所述UE在原网络CS域的NRI信息和PLMN ID信息所对应的运营商是否是自身所属的运营商；
    若是，接受所述PS域的注册请求消息；
    所述发送单元还用于：向所述UE发送接受响应消息；
    若不是，所述发送单元还用于：向所述基站发送重新路由消息，所述重新路由消息中携带有所述UE在原网络CS域的NRI信息、PLMN ID信息以及所述UE的国际移动用户识别码IMSI信息。
  13. 一种核心网网元，包括接收单元和发送单元；
    所述接收单元，用于接收目标共享网络的第一通用分组无线服务技术的服务支持节点SGSN发送的上下文请求消息，所述上下文请求信息携带第一标识，所述第一标识用于表示所述第一SGSN请求获取所述UE在原网络电路交换CS域的网络资源标识NRI信息和公共陆地移动网标识PLMN ID信息；
    所述发送单元，用于根据所述上下文请求消息中的所述第一标识，向所述第一SGSN发送上下文请求响应消息，所述上下文请求响应消息中携带所述UE在原网络CS域的NRI信息和PLMN ID信息，以使得所述第一SGSN根据所述UE在原网络CS域的NRI信息和PLMN ID信息判断是否接受所述PS域的注册请求信息。
  14. 根据权利要求13所述的网元，其特征在于，所述网元还包括：获取单元；
    所述获取单元，用于取所述UE在原网络CS域的NRI信息和PLMN ID信息。
  15. 一种移动交换中心MSC，其特征在于，所述MSC包括第一接收单元和第一判断单元；
    所述第一接收单元，用于接收所述目标共享网络的基站发送的电路交换CS域的注册请求消息；
    所述第一判断单元，用于根据发送所述CS域注册请求消息的用户设备UE在原网络分组交换PS域的网络资源标识NRI信息或移动管理实体编码MMEC信息，以及公共陆地移动网标识PLMN ID信息，判断是否接受所述CS域的注册请求消息。
  16. 根据权利要求15所述的MSC，其特征在于，所述MSC还包括：第二判断单元、发送单元和第二接收单元；
    所述第二判断单元，用于判断所述MSC是否存储有所述UE在原网络PS域的NRI信息或MMEC信息，以及PLMN ID信息；
    所述发送单元，用于接收所述第二判断单元的判断结果，若所述判断结果为所述MSC没有存储所述UE在原网络PS域的NRI信息或 MMEC信息，以及PLMN ID信息，则向第二核心网网元发送上下文请求消息，所述上下文请求消息携带第二标识，所述第二标识用于表示所述第一MSC请求获取所述UE在原网络PS域的NRI信息或MMEC，以及PLMN ID信息，其中，所述第二核心网网元是所述UE在切换至所述目标共享网络之前，在原网络CS域注册的核心网网元；
    所述第二接收单元，用于接收所述第二核心网网元发送的上下文请求响应消息，所述上下文请求响应消息中携带所述UE在原网络PS域的NRI信息或MMEC信息，以及PLMN ID信息。
  17. 根据权利要求15或16所述的MSC，其特征在于，所述第一判断单元具体用于：
    判断所述UE在原网络PS域的NRI信息或MMEC信息，以及PLMN ID信息所对应的运营商是否是自身所属的运营商；
    若是，接受所述CS域的注册请求消息；
    所述发送单元还用于：并向所述UE发送接受响应消息；
    若不是，所述发送单元还用于：向所述基站发送重新路由消息，所述重新路由消息中携带有所述UE在原网络PS域的NRI信息或MMEC信息、PLMN ID信息以及所述UE的国际移动用户识别码IMSI信息。
  18. 一种核心网网元，其特征在于，所述网元包括接收单元和发送单元；
    所述接收单元，用于接收目标共享网络的第一移动交换中心MSC发送的上下文请求消息，所述上下文请求信息携带第二标识，所述第二标识用于表示所述第一MSC请求获取所述UE在原网络分组交换PS域的网络资源标识NRI信息或移动管理实体编码MMEC信息，以及公共陆地移动网标识PLMN ID信息；
    所述发送单元，用于根据所述上下文请求消息中的所述第二标识，向所述第一MSC发送上下文请求响应消息，所述上下文请求响应消息中携带所述UE在原网络PS域的NRI信息或MMEC信息，以及PLMN ID信息，以使得所述第一MSC根据所述UE在原网络PS 域的NRI信息或MMEC信息，以及PLMN ID信息判断是否接收所述CS域的注册请求消息。
  19. 根据权利要求18所述的网元，其特征在于，所述网元还包括：获取单元；
    所述获取单元，用于获取所述UE在原网络PS域的NRI信息或MMEC信息，以及PLMN ID信息。
  20. 一种选择目标共享网络CS域和PS域运营商的方法，其特征在于，该方法包括：
    当用户设备UE通过单一无线语音呼叫连续性SRVCC或电路域回落CSFB切换至目标共享网络，所述UE在所述目标共享网络的电路交换CS域通话过程结束之前，所述目标共享网络的第一移动交换中心MSC向所述UE发送CS域的临时移动用户标识TMSI和位置区标识LAI，其中，所述TMSI中包含CS域的网络资源标识NRI，所述CS域的NRI与所述UE在原网络分组交换PS域的全局唯一的临时标识GUTI中的移动管理实体编码MMEC相同，所述LAI包含公共陆地移动网标识PLMN ID，所述LAI中的PLMN ID与所述GUTI中的PLMN ID相同，以使所述UE在向所述目标共享网络的基站发送的CS域的注册请求消息中携带所述TMSI和所述LAI。
  21. 根据权利要求20所述的方法，其特征在于，所述目标共享网络的第一移动交换中心MSC向所述UE发送CS域的临时移动用户标识TMSI和位置区标识LAI之前，该方法还包括：
    所述第一MSC接收移动管理实体MME发送的所述GUTI中的MMEC和PLMN ID，其中，所述MME是所述UE在原网络PS域所注册的核心网网元。
  22. 根据权利要求21所述的方法，其特征在于，所述第一MSC接收移动管理实体MME发送的所述GUTI中的MMEC和PLMN ID具体包括：
    若所述UE通过SRVCC切换至所述目标共享网络，所述第一MSC接收所述MME发送的PS域切换至CS域的切换请求消息，其中，所 述切换请求消息中携带有所述GUTI中的MMEC和PLMN ID。
  23. 根据权利要求21所述的方法，其特征在于，所述第一MSC接收移动管理实体MME发送的所述GUTI中的MMEC和PLMN ID具体包括：
    若所述UE通过SRVCC切换至所述目标共享网络，所述第一MSC接收所述MME发送的PS域切换至CS域的切换请求消息，其中，所述切换请求消息中携带有所述UE在原网络PS域的分组临时移动用户标识P-TMSI和路由区标识RAI，所述P-TMSI中携带有所述MMEC，所述RAI中携带有所述GUTI中的PLMN ID，所述P-TMSI和所述RAI是由所述GUTI映射而来的。
  24. 根据权利要求21所述的方法，其特征在于，所述第一MSC接收移动管理实体MME发送的所述GUTI中的MMEC和PLMN ID具体包括：
    若所述UE通过CSFB切换至所述目标共享网络，所述第一MSC在向所述MME发送寻呼请求消息后，接收所述MME发送的业务请求消息，其中，所述业务请求消息用于表示所述UE的连接状态，以使得所述第一MSC停止寻呼所述UE，所述业务请求消息中携带有所述GUTI中的MMEC和PLMN ID。
  25. 根据权利要求21所述的方法，其特征在于，所述第一MSC接收移动管理实体MME发送的所述GUTI中的MMEC和PLMN ID具体包括：
    若所述UE通过CSFB切换至所述目标共享网络，所述第一MSC在向所述MME发送寻呼请求消息后，接收所述MME发送的业务请求消息，其中，所述业务请求消息用于表示所述UE的连接状态，以使得所述第一MSC停止寻呼所述UE，所述业务请求消息中携带有所述UE在原网络PS域的P-TMSI和RAI，所述P-TMSI中携带有所述MMEC，所述RAI中携带有所述GUTI中的PLMN ID，所述P-TMSI和所述RAI是由所述GUTI映射而来的。
  26. 根据权利要求21所述的方法，其特征在于，所述第一MSC 接收移动管理实体MME发送的所述GUTI中的MMEC和PLMN ID具体包括：
    若所述UE通过CSFB切换至所述目标共享网络，所述第一MSC接收所述MME发送的主叫CSFB指示消息，其中，所述主叫CSFB指示消息用于指示所述第一MSC后续接收到的业务请求消息是因主叫CSFB引起的，所述主叫CSFB指示消息中携带有所述GUTI中的MMEC和PLMN ID。
  27. 根据权利要求21所述的方法，其特征在于，所述第一MSC接收移动管理实体MME发送的所述GUTI中的MMEC和PLMN ID具体包括：
    若所述UE通过CSFB切换至所述目标共享网络，所述第一MSC接收所述MME发送的主叫CSFB指示消息，其中，所述主叫CSFB指示消息用于指示所述第一MSC后续接收到的业务请求消息是因主叫CSFB引起的，所述主叫CSFB指示消息中携带有所述UE在原网络PS域的P-TMSI和RAI，所述P-TMSI中携带有所述MMEC，所述RAI中携带有所述GUTI中的PLMN ID，所述P-TMSI和所述RAI是由所述GUTI映射而来的。
  28. 一种选择目标共享网络CS域和PS域运营商的方法，其特征在于，该方法包括：
    当用户设备UE通过单一无线语音呼叫连续性SRVCC或电路域回落CSFB切换至目标共享网络，所述UE在所述目标共享网络的电路交换CS域通话过程结束之前，所述UE接收目标共享网络的第一移动交换中心MSC发送的电路交换CS域的临时移动用户标识TMSI和位置区标识LAI，其中，所述TMSI中包含CS域的网络资源标识NRI，所述CS域的NRI与所述UE在原网络的分组交换PS域的全局唯一的临时移动标识GUTI中的移动管理实体编码MMEC相同，所述LAI包含公共陆地移动网标识PLMN ID，所述LAI中的PLMN ID与所述GUTI中的PLMN ID相同；
    所述UE向所述目标共享网络的基站发送CS域的注册请求消息， 所述CS域的注册请求消息中携带所述TMSI和所述LAI。
  29. 一种选择目标共享网络CS域和PS域运营商的方法，其特征在于，该方法包括：
    当用户设备UE通过单一无线语音呼叫连续性SRVCC或电路域回落CSFB切换至目标共享网络，所述UE在所述目标共享网络的电路交换CS域通话过程结束之前，移动管理实体MME向所述目标共享网络的第一移动交换中心MSC发送所述UE在原网络的分组交换PS域的全局唯一的临时移动用户标识GUTI中的移动管理实体编码MMEC和公共陆地移动网标识PLMN ID，其中，所述MME是所述UE在原网络的PS域注册的核心网网元，以使得所述第一MSC在所述UE发送CS域的注册请求消息之前向所述UE发送CS域的临时移动用户标识TMSI和位置区标识LAI，其中，所述TMSI中包含CS域的网络资源标识NRI，所述CS域的NRI与所述GUTI中的MMEC相同，所述LAI包含PLMN ID，所述LAI中的PLMN ID与所述GUTI中的PLMN ID相同。
  30. 一种选择目标共享网络CS域和PS域运营商的方法，其特征在于，该方法包括：
    目标共享网络的第一通用分组无线服务技术的服务支持节点SGSN接收所述目标共享网络的基站发送的分组交换PS域的注册请求消息；
    所述第一SGSN向第一核心网网元发送上下文请求消息，所述上下文请求消息携带第一标识，所述第一标识用于表示所述第一SGSN请求获取所述UE在原网络电路交换CS域的网络资源标识NRI信息和公共陆地移动网标识PLMN ID信息，其中，所述第一核心网网元是所述UE切换至所述目标共享网络之前，在原网络PS域所注册的核心网网元；
    所述第一SGSN接收所述第一核心网网元发送的上下文请求响应消息，所述上下文请求响应消息中携带所述UE在原网络CS域的NRI信息和PLMN ID信息；
    所述第一SGSN根据所述UE在原网络CS域的NRI信息和PLMN ID信息，判断是否接受所述PS域的注册请求消息。
  31. 根据权利要求30所述的方法，其特征在于，所述第一SGSN根据所述UE在原网络CS域的NRI信息和PLMN ID信息，判断是否接受所述PS域的注册请求消息具体包括：
    所述第一SGSN判断所述UE在原网络CS域的NRI信息和PLMN ID信息所对应的运营商是否是自身所属的运营商；
    若是，所述第一SGSN接受所述PS域的注册请求消息，并向所述UE发送接受响应消息；
    若不是，所述第一SGSN向所述目标共享网络的基站发送重新路由消息，所述重新路由消息中携带有所述UE在原网络CS域的NRI信息、PLMN ID信息以及所述UE的国际移动用户识别码IMSI信息。
  32. 一种选择目标共享网络CS域和PS域运营商的方法，其特征在于，该方法包括：
    第一核心网网元接收目标共享网络的第一通用分组无线服务技术的服务支持节点SGSN发送的上下文请求消息，所述上下文请求信息携带第一标识，所述第一标识用于表示所述第一SGSN请求获取所述UE在原网络电路交换CS域的网络资源标识NRI信息和公共陆地移动网标识PLMN ID信息，其中，所述第一核心网网元是所述UE切换至所述目标共享网络之前，在原网络PS域所注册的核心网网元；
    所述第一核心网网元根据所述上下文请求消息中的所述第一标识，向所述第一SGSN发送上下文请求响应消息，所述上下文请求响应消息中携带所述UE在原网络CS域的NRI信息和PLMN ID信息，以使得所述第一SGSN根据所述UE在原网络CS域的NRI信息和PLMN ID信息判断是否接受所述PS域的注册请求信息。
  33. 根据权利要求32所述的方法，其特征在于，所述第一核心网网元接收目标共享网络的第一通用分组无线服务技术的服务支持节点SGSN发送的上下文请求消息之前，该方法还包括：
    所述第一核心网网元获取所述UE在原网络CS域的NRI信息和 PLMN ID信息。
  34. 一种选择目标共享网络CS域和PS域运营商的方法，其特征在于，该方法包括：
    目标共享网络的第一移动交换中心MSC接收所述目标共享网络的基站发送的电路交换CS域的注册请求消息；
    所述第一MSC根据发送所述CS域注册请求消息的用户设备UE在原网络分组交换PS域的网络资源标识NRI信息或移动管理实体编码MMEC信息，以及公共陆地移动网标识PLMN ID信息，判断是否接受所述CS域的注册请求消息。
  35. 根据权利要求34所述的方法，其特征在于，所述第一MSC根据发送所述CS域注册请求消息的用户设备UE在原网络分组交换PS域的网络资源标识NRI信息或移动管理实体编码MMEC信息，以及公共陆地移动网标识PLMN ID信息，判断是否接受所述CS域的注册请求消息之前，该方法还包括：
    所述第一MSC判断是否存储有所述UE在原网络PS域的NRI信息或MMEC信息，以及PLMN ID信息；
    若没有，所述第一MSC向第二核心网网元发送上下文请求消息，所述上下文请求消息携带第二标识，所述第二标识用于表示所述第一MSC请求获取所述UE在原网络PS域的NRI信息或MMEC，以及PLMN ID信息，其中，所述第二核心网网元是所述UE在切换至所述目标共享网络之前，在原网络CS域注册的核心网网元；
    所述第一MSC接收所述第二核心网网元发送的上下文请求响应消息，所述上下文请求响应消息中携带所述UE在原网络PS域的NRI信息或MMEC信息，以及PLMN ID信息。
  36. 根据权利要求34或35所述的方法，其特征在于，所述第一MSC根据发送所述CS域注册请求消息的用户设备UE在原网络分组交换PS域的网络资源标识NRI信息或移动管理实体编码MMEC信息，以及公共陆地移动网标识PLMN ID信息，判断是否接受所述CS域的注册请求消息具体包括：
    所述第一MSC判断所述UE在原网络PS域的NRI信息或MMEC信息，以及PLMN ID信息所对应的运营商是否是自身所属的运营商；
    若是，所述第一MSC接受所述CS域的注册请求消息，并向所述UE发送接受响应消息；
    若不是，所述第一MSC向所述基站发送重新路由消息，所述重新路由消息中携带有所述UE在原网络PS域的NRI信息或MMEC信息、PLMN ID信息以及所述UE的国际移动用户识别码IMSI信息。
  37. 一种选择目标共享网络CS域和PS域运营商的方法，其特征在于，该方法包括：
    第二核心网网元接收目标共享网络的第一移动交换中心MSC发送的上下文请求消息，所述上下文请求信息携带第二标识，所述第二标识用于表示所述第一MSC请求获取用户设备UE在原网络分组交换PS域的网络资源标识NRI信息或移动管理实体编码MMEC信息，以及公共陆地移动网标识PLMN ID信息，其中，所述第二核心网网元是所述UE在切换至所述目标共享网络之前，在原网络CS域注册的核心网网元；
    所述第二核心网网元根据所述上下文请求消息中的所述第二标识，向所述第一MSC发送上下文请求响应消息，所述上下文请求响应消息中携带所述UE在原网络PS域的NRI信息或MMEC信息，以及PLMN ID信息，以使得所述第一MSC根据所述UE在原网络PS域的NRI信息或MMEC信息，以及PLMN ID信息判断是否接收所述CS域的注册请求消息。
  38. 根据权利要求37所述的方法，其特征在于，所述第二核心网网元接收目标共享网络的第一移动交换中心MSC发送的上下文请求消息之前，该方法还包括：
    所述第二核心网网元获取所述UE在原网络PS域的NRI信息或MMEC信息，以及PLMN ID信息。
  39. 一种通信***，其特征在于，所述通信***包括：如权利要求1-8任一项所述的移动交换中心MSC、和权利要求9所述的用户设 备UE以及权利要求10所述的移动管理实体MME。
  40. 一种通信***，其特征在于，所述通信***包括：如权利要求11或12所述的通用分组无线服务技术的服务支持节点SGSN，和权利要求13或14所述的核心网网元。
  41. 一种通信***，其特征在于，所述通信***包括：如权利要求15-17任一项所述的移动交换中心MSC，和/或权利要求18或19所述的核心网网元。
PCT/CN2014/086962 2014-09-19 2014-09-19 选择目标共享网络的cs域和ps域运营商的方法及相关装置 WO2016041208A1 (zh)

Priority Applications (2)

Application Number Priority Date Filing Date Title
PCT/CN2014/086962 WO2016041208A1 (zh) 2014-09-19 2014-09-19 选择目标共享网络的cs域和ps域运营商的方法及相关装置
CN201480082075.7A CN106688281A (zh) 2014-09-19 2014-09-19 选择目标共享网络的cs域和ps域运营商的方法及相关装置

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/CN2014/086962 WO2016041208A1 (zh) 2014-09-19 2014-09-19 选择目标共享网络的cs域和ps域运营商的方法及相关装置

Publications (1)

Publication Number Publication Date
WO2016041208A1 true WO2016041208A1 (zh) 2016-03-24

Family

ID=55532489

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/CN2014/086962 WO2016041208A1 (zh) 2014-09-19 2014-09-19 选择目标共享网络的cs域和ps域运营商的方法及相关装置

Country Status (2)

Country Link
CN (1) CN106688281A (zh)
WO (1) WO2016041208A1 (zh)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2017177427A1 (zh) * 2016-04-14 2017-10-19 华为技术有限公司 业务处理方法和相关装置及通信***
CN108966291A (zh) * 2017-05-17 2018-12-07 中兴通讯股份有限公司 电路域回落的恢复方法、装置、移动管理实体及用户终端
CN115103416A (zh) * 2022-07-25 2022-09-23 北京小米移动软件有限公司 网络切换的方法、装置、设备和存储介质
US11991525B2 (en) 2021-12-02 2024-05-21 T-Mobile Usa, Inc. Wireless device access and subsidy control

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN116896778B (zh) * 2023-09-06 2024-02-02 上海途鸽数据科技有限公司 一种功耗优化方法、***和机器可读存储介质

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101151928A (zh) * 2005-03-31 2008-03-26 艾利森电话股份有限公司 在多运营商核心网络中协调cs和ps注册的技术
WO2014008625A1 (zh) * 2012-07-09 2014-01-16 华为技术有限公司 位置更新的方法、装置及***
WO2014047928A1 (zh) * 2012-09-29 2014-04-03 华为技术有限公司 移动网络共享方法及装置

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101151928A (zh) * 2005-03-31 2008-03-26 艾利森电话股份有限公司 在多运营商核心网络中协调cs和ps注册的技术
WO2014008625A1 (zh) * 2012-07-09 2014-01-16 华为技术有限公司 位置更新的方法、装置及***
WO2014047928A1 (zh) * 2012-09-29 2014-04-03 华为技术有限公司 移动网络共享方法及装置

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2017177427A1 (zh) * 2016-04-14 2017-10-19 华为技术有限公司 业务处理方法和相关装置及通信***
CN108966291A (zh) * 2017-05-17 2018-12-07 中兴通讯股份有限公司 电路域回落的恢复方法、装置、移动管理实体及用户终端
CN108966291B (zh) * 2017-05-17 2021-06-11 中兴通讯股份有限公司 电路域回落的恢复方法、装置、移动管理实体及用户终端
US11991525B2 (en) 2021-12-02 2024-05-21 T-Mobile Usa, Inc. Wireless device access and subsidy control
CN115103416A (zh) * 2022-07-25 2022-09-23 北京小米移动软件有限公司 网络切换的方法、装置、设备和存储介质
CN115103416B (zh) * 2022-07-25 2023-10-13 北京小米移动软件有限公司 网络切换的方法、装置、设备和存储介质

Also Published As

Publication number Publication date
CN106688281A (zh) 2017-05-17

Similar Documents

Publication Publication Date Title
US20240049067A1 (en) Inter-Network Change Method and Apparatus, and Related Device
US11026080B2 (en) Policy control function determining method, apparatus, and system
US10313997B2 (en) User equipment registration method for network slice selection and network controller and network communication system using the same
US20200178323A1 (en) Core Network Control Plane Device Selection Method And Apparatus
US20210204194A1 (en) Network element selection method and apparatus
US8532046B2 (en) Method, system, and device for network handoff
KR101334833B1 (ko) 네트워크 등록방법, 이동국 및 가입자정보 관리서버
WO2019024677A1 (zh) 网络切换的方法、装置及***
US20150237532A1 (en) Direct handover method and device
WO2016041208A1 (zh) 选择目标共享网络的cs域和ps域运营商的方法及相关装置
WO2016049888A1 (zh) 专用网络切换方法、专用网络类型通知方法及设备
WO2015100608A1 (zh) 一种选择lte网络的方法、设备及***
WO2017063484A1 (zh) 一种将终端设备切换到目标小区的方法、装置及基站
WO2016201796A1 (zh) 专网注册实现方法、***、网元设备及计算机存储介质
WO2014029065A1 (zh) 网络名称显示方法和装置
WO2018201933A1 (zh) 一种信息处理方法及装置
JP2018501745A (ja) トラブルシューティングの方法、装置、およびシステム
WO2012110000A1 (zh) 家庭基站下建立选择性ip流量分流连接的方法及装置
WO2015100661A1 (zh) 一种选择紧急呼叫中心的方法、设备及***
WO2019029228A1 (zh) 语音业务的处理方法及装置、存储介质
CN109089289B (zh) 切换到电路交换域的方法和装置
WO2016037365A1 (zh) Ps/cs协调方法与***以及移动交互中心
WO2014029059A1 (zh) 网络名称显示方法和装置
CN104380795A (zh) 实现lte中的cdma2000***共享
CN108260097B (zh) 解决eSRVCC切换时误产生漫游计费的方法及eMSC

Legal Events

Date Code Title Description
121 Ep: the epo has been informed by wipo that ep was designated in this application

Ref document number: 14902189

Country of ref document: EP

Kind code of ref document: A1

NENP Non-entry into the national phase

Ref country code: DE

122 Ep: pct application non-entry in european phase

Ref document number: 14902189

Country of ref document: EP

Kind code of ref document: A1