WO2014107855A1 - 一种选择长期演进lte网络的方法及设备 - Google Patents
一种选择长期演进lte网络的方法及设备 Download PDFInfo
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- WO2014107855A1 WO2014107855A1 PCT/CN2013/070283 CN2013070283W WO2014107855A1 WO 2014107855 A1 WO2014107855 A1 WO 2014107855A1 CN 2013070283 W CN2013070283 W CN 2013070283W WO 2014107855 A1 WO2014107855 A1 WO 2014107855A1
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- Prior art keywords
- lte
- plmn
- frequency band
- information
- base station
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Classifications
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W36/00—Hand-off or reselection arrangements
- H04W36/0005—Control or signalling for completing the hand-off
- H04W36/0011—Control or signalling for completing the hand-off for data sessions of end-to-end connection
- H04W36/0022—Control or signalling for completing the hand-off for data sessions of end-to-end connection for transferring data sessions between adjacent core network technologies
- H04W36/00224—Control or signalling for completing the hand-off for data sessions of end-to-end connection for transferring data sessions between adjacent core network technologies between packet switched [PS] and circuit switched [CS] network technologies, e.g. circuit switched fallback [CSFB]
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- 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
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W36/00—Hand-off or reselection arrangements
- H04W36/0005—Control or signalling for completing the hand-off
- H04W36/0055—Transmission or use of information for re-establishing the radio link
- H04W36/0061—Transmission or use of information for re-establishing the radio link of neighbour cell information
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W92/00—Interfaces specially adapted for wireless communication networks
- H04W92/02—Inter-networking arrangements
Definitions
- the present invention relates to the field of communications technologies, and in particular, to a method and a device for selecting a Long Term Evolution (LTE) network after a Circuit Switched Fallback (CSFB) service ends.
- LTE Long Term Evolution
- CSFB Circuit Switched Fallback
- the Circuit Service (CS) network is a wireless network that provides circuit domain services such as voice calls. For example, coverage of 2nd Generation/3rd Generation (2G/3G) networks such as GSM and WCDMA is very common.
- 2G/3G 2nd Generation/3rd Generation
- PS Packet Service
- LTE Long Term Evolution
- the Partnership Project (3GPP) organization proposed the "CS Fallback" (CSFB) technology, so that the User Equipment (UE) registered to the LTE network returns to the CS domain of the 2G/3G network when it needs to process the CS voice service.
- CSFB CS Fallback
- the existing protocol also defines the CSFB regression mechanism to ensure that the UE can return to the PS domain network for PS services after completing the CS voice call, including: Mobile Switching Centre (MSC) / Visit the location register ( Visitors Location Register, VLR) releases the connection established by the CS voice call, and indicates that the current connection to the base station is established by CSFB, and then when the base station releases the connection, the base station instructs the UE to reselect the LTE frequency band (Frequency) information of the LTE network, so that the UE is redirected.
- LTE frequency band Frequency
- the UE may be in the LTE network coverage of multiple different PLMNs, for example, the UE is registered when the CSFB is initiated.
- the LTE PLMN, and the LTE network of the current CS serving PLMN are available to the UE.
- the UE may acquire a plurality of available LTE PLMNs in the LTE cell.
- the prior art cannot guarantee that the UE selects the LTE PLMN that was registered when the CSFB service was previously initiated. If the UE reselects the LTE network of other PLMNs, the LTE registered before the CSFB service is triggered. The data service suspended in the PLMN cannot be recovered, causing the ongoing data service to be terminated, and causing unnecessary PLMN network switching, which affects the user's service experience.
- the embodiments of the present invention provide a method and a device for selecting an LTE network, so that the UE can return to the LTE PLMN registered when the CSFB is initiated after the CSFB service ends, ensuring continuity of the PS service, and avoiding unnecessary PLMN inter-network handover. , enhance the user experience.
- a first aspect of the present invention provides a method for selecting a long term evolution LTE network, including: a user equipment UE jointly registered in an LTE public land mobile network PLMN; The UE initiates a circuit domain fallback CSFB service to fall back to the 2G/3G network; the UE receives an equivalent PLMN list on the 2G/3G network;
- the UE adds the identifier information of the LTE PLMN to the equivalent PLMN list; after the CSFB service ends, the UE performs PLMN selection according to the equivalent PLMN list.
- the performing the PLMN selection according to the equivalent PLMN list includes:
- the LTE PLMN is preferentially selected according to the equivalent PLMN list.
- the preferentially selecting the LTE PLMN includes:
- the LTE frequency band information is information of an LTE frequency band selected by the UE when initiating joint registration with the LTE PLMN.
- the preferentially selecting the LTE PLMN includes:
- a second aspect of the present invention provides a method for selecting a long term evolution LTE network, including: a user equipment UE jointly registered with an LTE public land mobile network PLMN;
- the UE After the CSFB service in the circuit domain is terminated, the UE performs the PLMN selection on the frequency band corresponding to the LTE frequency band information, where the LTE frequency band information is the UE to the LTE.
- the UE performs PLMN selection on a frequency band corresponding to the LTE frequency band information, including:
- the UE selects a cell on a frequency band corresponding to the LTE frequency band information, and preferentially selects the LTE PLMN from an available PLMN of the cell.
- the method further includes:
- the LTE frequency band information is saved.
- a third aspect of the present invention provides a method for selecting a Long Term Evolution (LTE) network, including:
- the 2G/3G base station receives the connection release message sent by the serving mobile switching center/visiting location register MSC/VLR, wherein the connection release message includes the identification information of the LTE public land mobile network PLMN registered when the user equipment UE initiates the CSFB service.
- the 2G/3G base station is a base station that provides the CSFB service;
- the 2G/3G base station selects target frequency band information according to the identifier information of the LTE PLMN, and sends the target frequency band information to the UE, where the target frequency band information is used to indicate that the UE corresponds to the target frequency band information. Select cell camping on the frequency band.
- the sending the target frequency band information to the UE includes:
- a fourth aspect of the present invention provides a method for selecting a long term evolution (LTE) network, including: receiving, by an LTE base station, a connection establishment request message sent by the UE after a CSAF service is returned in a circuit domain, where the connection establishment request message is Including an identifier of the UE; And determining, by the LTE base station, the LTE PLMN corresponding to the identifier information of the LTE PLMN, according to the identifier of the UE and the identifier information of the LTE public land mobile network PLMN that is registered when the UE initiates the CSFB service.
- LTE long term evolution
- the method further includes: the LTE base station receiving and storing the identifier of the UE sent by a 2G/3G base station,
- the 2G/3G base station is a base station that provides the CSFB service.
- the LTE base station before the LTE base station receives the identifier of the UE sent by the 2G/3G base station and the identifier information of the LTE PLMN, the method further includes:
- the 2G/3G base station receives a connection release message sent by the serving mobile switching center/visiting location register MSC/VLR, where the connection release message includes the identifier of the UE and the identifier information of the LTE PLMN;
- the 2G/3G base station sends the identifier of the UE and the identifier information of the LTE PLMN to the LTE base station.
- the serving MSC/VLR is the registered MSC/VLR of the UE
- the identifier of the UE and the The identification information of the LTE PLMN is obtained by the serving MSC/VLR from the registration information of the UE;
- the serving MSC/VLR is not the registered MSC/VLR of the UE, the identity of the UE and the identity information of the LTE PLMN are obtained by the serving MSC/VLR from the registered MSC/VLR of the UE.
- the LTE base station is a base station that provides an access service when the UE initiates the CSFB service;
- the method further includes:
- the LTE base station When the UE initiates a CSFB service in the LTE PLMN, the LTE base station saves the identifier of the UE and the identifier information of the LTE PLMN.
- the method further includes:
- a fifth aspect of the present invention provides a UE, including:
- a receiver configured to, after the UE is jointly registered with the long-term evolution LTE public land mobile network PLMN, initiate a circuit domain fallback CSFB service to fall back to the second generation/third generation 2G/3G network, and receive from the 2G/3G network Equivalent PLMN list;
- a processor configured to add the identifier information of the LTE PLMN to the equivalent PLMN list received by the receiver; after the CSFB service ends, perform PLMN selection according to the equivalent PLMN list.
- the processor is configured to: preferentially select the LTE PLMN according to the equivalent PLMN list.
- the processor is configured to:
- the LTE frequency band information is that the UE initiates a joint with the LTE PLMN. Information about the LTE band selected at the time of registration.
- the processor is configured to:
- a sixth aspect of the present invention provides a UE, including:
- a transceiver for interacting with a network device to jointly register with the LTE public land mobile network PLMN;
- a processor configured to perform PLMN selection on a frequency band corresponding to the LTE frequency band information after the CSFB service is terminated in the circuit domain, where the LTE frequency band information is the LTE selected when the UE initiates joint registration with the LTE PLMN Frequency band information.
- the processor is configured to: select a cell on a frequency band corresponding to the LTE frequency band information, and preferentially select the LTE PLMNo from an available PLMN of the cell
- the UE further includes:
- the processor is further configured to acquire the LTE frequency band information from the memory after the circuit domain falls back to the CSFB service.
- a 2G/3G base station for serving a circuit domain fallback CSFB service
- the 2G/3G base station includes: a receiver, configured to receive a connection release message sent by the serving mobile switching center/visiting location register MSC/VLR, where the connection release message includes an identifier of the LTE public land mobile network PLMN registered when the user equipment UE initiates the CSFB service Information, the 2G/3G base station is a base station serving the CSFB service;
- a processor configured to select target frequency band information according to the identifier information of the LTE PLMN received by the receiver
- a transmitter configured to send the target frequency band information selected by the processor to the UE, where the target frequency band information is used to indicate that the UE selects a cell to camp on a frequency band corresponding to the target frequency band information.
- the transmitter is configured to: send priority information to the UE, where the priority information includes the frequency band information.
- an LTE base station is provided, including:
- a receiver configured to receive a connection setup request message sent by the UE after the CSAF service is returned in the circuit domain, where the connection setup request message includes an identifier of the UE
- a processor configured to be used according to the UE And identifying, by the identifier information of the LTE public land mobile network PLMN that is registered when the UE initiates the CSFB service, selecting the LTE PLMN corresponding to the identifier information of the LTE PLMN.
- the LTE base station further includes: a memory
- the receiver is further configured to receive, by the second generation/third generation 2G/3G base station, the identifier of the UE and the identifier information of the LTE PLMN, where the 2G/3G base station is the CSFB service.
- a base station providing services;
- the memory is configured to save the UE sent by the 2G/3G base station received by the receiver And the identifier information of the LTE PLMN, where the 2G/3G base station is a base station that provides the CSFB service.
- the LTE base station further includes: a transmitter
- the receiver is further configured to receive, by the 2G/3G base station, a connection release message sent by the serving mobile switching center/visiting location register MSC/VLR, where the connection release message includes the identifier of the UE and the Identification information of the LTE PLMN;
- the transmitter is further configured to send the identifier of the UE and the identifier information of the LTE PLMN to an LTE base station.
- the serving MSC/VLR is the registered MSC/VLR of the UE
- the identifier of the UE and the The identification information of the LTE PLMN is obtained by the serving MSC/VLR from the registration information of the UE;
- the serving MSC/VLR is not the registered MSC/VLR of the UE, the identity of the UE and the identity information of the LTE PLMN are obtained by the serving MSC/VLR from the registered MSC/VLR of the UE.
- the LTE base station is a base station that provides an access service when the UE initiates the CSFB service, and the LTE base station further Includes:
- a storage configured to save the identifier of the UE and the identifier information of the LTE PLMN when the UE initiates a CSFB service in the LTE PLMN.
- the processor is further configured to: delete the saved identifier of the UE and the LTE Identification information of the PLMN.
- a ninth aspect of the present invention provides a UE, including:
- a registration unit configured to jointly register with the LTE public land mobile network PLMN;
- a fallback unit configured to initiate a circuit domain fallback CSFB service to fall back to the 2G/3G network, and
- a receiving unit configured to receive the equivalent PLMN list on the 2G/3G network ;
- a joining unit configured to add identifier information of the LTE PLMN to the list of the equivalent PLMNs received by the receiving unit;
- a selecting unit configured to perform PLMN selection according to the modified PLMN list modified by the joining unit after the CSFB service ends.
- the selecting unit is used to:
- the LTE PLMN is preferentially selected according to the equivalent PLMN list modified by the joining unit.
- the selecting unit is specifically configured to:
- the LTE frequency band information is information of an LTE frequency band selected by the UE when initiating joint registration with the LTE PLMN.
- the selecting unit is specifically configured to:
- the information pair in the LTE frequency band Select a cell on the appropriate frequency band
- the LTE frequency band information is received by the UE from the 2G/3G network.
- a tenth aspect of the present invention provides a UE, including:
- a registration unit configured to perform a PLMN joint registration on the LTE public land mobile network
- a selecting unit configured to perform PLMN selection on a frequency band corresponding to the LTE frequency band information after the CSFB service is terminated in the circuit domain, where the LTE frequency band information is The information about the LTE frequency band selected when the UE initiates joint registration with the LTE PLMN.
- the selecting unit is used to:
- the UE further includes:
- a saving unit configured to save the LTE frequency band information when the CSFB service is initiated to fall back to the circuit domain
- the selecting unit is further configured to acquire the LTE frequency band information from the saving unit after the circuit domain falls back to the CSFB service.
- a 2G/3G base station for serving a circuit domain fallback CSFB service, where the 2G/3G base station includes:
- a receiving unit configured to receive a connection release message sent by the serving mobile switching center/visiting location register MSC/VLR, where the connection release message includes an identifier of the LTE public land mobile network PLMN registered when the user equipment UE initiates the CSFB service Information, said A 2G/3G base station is a base station that provides services for the CSFB service;
- a selecting unit configured to select target frequency band information according to the identifier information of the LTE PLMN received by the receiving unit
- a sending unit configured to send the target frequency band information selected by the selecting unit to the UE, where the target frequency band information is used to indicate that the UE selects a cell camping on a frequency band corresponding to the target frequency band information.
- the sending unit is configured to:
- an LTE base station including:
- a receiving unit configured to receive a connection establishment request message that is sent by the UE after the end of the CSFB service in the circuit domain, where the connection establishment request message includes an identifier of the UE, and a selecting unit, configured to be used according to the receiving unit
- the receiving unit is configured to:
- the receiving unit is configured to:
- the 2G/3G base station Before receiving the identifier of the UE sent by the 2G/3G base station and the identifier information of the LTE PLMN, the 2G/3G base station receives the serving mobile switching center/visiting location register a connection release message sent by the MSC/VLR, where the connection release message includes the identifier of the UE and the identifier information of the LTE PLMN; the 2G/3G base station sends the identifier of the UE to the LTE base station and the Identification information of the LTE PLMN.
- the serving MSC/VLR is the registered MSC/VLR of the UE
- the identifier and location of the UE The identification information of the LTE PLMN is obtained by the serving MSC/VLR from the registration information of the UE; or
- the serving MSC/VLR is not the registered MSC/VLR of the UE, the identity of the UE and the identity information of the LTE PLMN are obtained by the serving MSC/VLR from the registered MSC/VLR of the UE.
- the LTE base station is a base station that provides an access service when the UE initiates the CSFB service; Also includes:
- a saving unit configured to: when the UE initiates a CSFB service in the LTE PLMN, the LTE base station saves the identifier of the UE and the identifier information of the LTE PLMN.
- the LTE base station further includes:
- a deleting unit configured to delete the saved identifier of the UE and the identifier information of the LTE PLMN.
- the method and device for selecting an LTE network provided by the embodiment of the present invention, when the UE initiates a connection setup request message to the LTE network after the CSFB service ends, determining that the UE is based on the UE identifier sent by the UE and the identifier of the saved UE are matched.
- the UE can be designated to return to the LTE PLMN registered when the CSFB is initiated, which not only reduces unnecessary PLMN inter-network handover, but also recovers the suspended data service in the previously registered LTE PLMN, thereby improving the user experience.
- FIG. 1 is a flowchart of a method for selecting an LTE network according to an embodiment of the present invention
- FIG. 2 is a flowchart of a method for selecting an LTE network according to another embodiment of the present invention
- FIG. 4 is a flowchart of a method for selecting an LTE network according to another embodiment of the present invention
- FIG. 5 is a flowchart of another method for selecting an LTE network according to another embodiment of the present invention
- a flowchart of a method for selecting an LTE network
- FIG. 6 is a flowchart of a method for selecting an LTE network according to another embodiment of the present invention
- FIG. 7 is a UE of another embodiment of the present invention.
- FIG. 8 is a schematic diagram of a UE composition in another embodiment of the present invention.
- FIG. 9 is a schematic diagram showing the composition of a 2G/3G base station in another embodiment of the present invention.
- FIG. 10 is a schematic structural diagram of an LTE base station according to another embodiment of the present invention.
- FIG. 11 is a schematic diagram of a UE composition in another embodiment of the present invention.
- FIG. 12 is a schematic diagram of a UE composition according to another embodiment of the present invention.
- FIG. 13 is a schematic diagram of a 2G/3G base station according to another embodiment of the present invention.
- FIG. 14 is a schematic diagram of a composition of an LTE base station in another embodiment of the present invention. detailed description
- the LTE network described in this specification is an evolved UMTS terrestrial radio access network (English full name is Evolved UMTS Territorial Radio Access Network, English tube called E-UTRAN, where UMTS Chinese is called universal mobile communication system, English The full name of the Universal Mobile Telecommunications System), the second generation (2nd Generation, 2G) network is the GSM/EDGE radio access network (English full name is GSM/EDGE Radio Access Network, English tube called GERAN, where GSM Chinese full name Global mobile communication system, English is called Global System of Mobile communication, EDGE Chinese is called Enhanced Data Rate GSM Evolution Technology, English is called Enhanced Data Rate for GSM Evolution.
- the third generation (3rd Generation, 3G) network is UTRAN network.
- the PLMN of the LTE network only provides the PS domain service
- the 2G/3G network includes both the PLMN providing the CS domain service and the PLMN providing the PS domain service.
- the user equipment may be any one of the following, and the UE may be static or mobile.
- the stationary UE may be included as a terminal, a mobile station, a Subscriber Unit, or a station.
- Mobile UEs may include Cellular Phones, Personal Digital Assistants (PDAs), wireless modems, wireless communication devices, handheld devices, laptops (Laptop) Computer ), Cordless Phone or Wireless Local Loop (WLL).
- PDAs Personal Digital Assistants
- WLL Wireless Local Loop
- the above UEs may be distributed throughout the wireless network.
- the LTE base station may be a base station that provides LTE network access service, such as an eNodeB.
- the second/third generation 2G/3G base station may be a Base Station Subsystem (BSS) in a 2G network, or a Radio Network Subsystem (RNS) in a 3G network.
- the mobility management network element may be a Mobile Switching Centre (MSC)/Visitors Location Register (VLR), or a Mobility Management Entity (MME), or a Serving GPRS Support Node (Serving GPRS Support Node). Any one of the SGSNs, the MSC and the VLR are usually set to be the same network element, called MSC/VLR, or the cylinder is called a VLR.
- the Circuit Service Fall Back (CSFB) process is used to drop the UE from LTE to the 2G/3G network, so that the UE completes the circuit domain service in the 2G/3G network.
- the terminal needs to return to the LTE network to continue the data service on the LTE network.
- the CSFB service specifically refers to a CS service that is performed after the UE that resides in the LTE network initiates the CSFB process to fall back to the 2G/3G network, and the CSFB service includes the uplink CSFB service.
- the downlink CSFB service for example, the UE receives a downlink CSFB service triggered by a voice call page or an uplink CSFB service triggered by an active voice call on the LTE network.
- the source MSC/VLR is successfully registered by the UE in the joint registration process.
- the MSC/VLR that is, the serving MSC/VLR when the UE camps on the LTE network after successful joint registration, is also called the registered MSC/VLR.
- the serving MSC/VLR is the MSC/VLR, also called the target MSC/VLR, for the UE to initiate the service of the CS service after the CSFB process falls back to the 2G/3G network.
- the UE can be internally divided into an Access Stratum (AS) and a Non-Access Stratum (NAS) according to different processing and control message objects.
- the AS is responsible for receiving the RR/RRC connection release message, selecting a suitable cell according to the frequency band, and locating, reading the cell system broadcast message, obtaining the available PLMN information, and reporting the information to the NAS.
- the NAS determines whether to perform PLMN selection according to the available PLMN information reported by the AS layer.
- An embodiment of the present invention provides a method for selecting an LTE network. As shown in FIG. 1, the method includes:
- the LTE base station receives the connection establishment request message sent by the UE after the CSFB service is terminated in the circuit domain, where the connection establishment request message includes the identifier of the UE.
- the LTE base station provides an LTE access service for the UE, and is registered to the LTE base station when the UE initiates the CSFB.
- the LTE base station may save the identifier of the UE and the identifier of the LTE PLMN registered by the UE.
- the information in order to receive the connection establishment request message including the UE identifier sent by the UE after the end of the CSFB service of the UE, according to the identifier of the UE and the saved identifier of the LTE PLMN registered when the UE initiates the CSFB service Information, for the UE, select the LTE PLMN that was registered when CSFB was initiated.
- the serving MSC/VLR may send the identifier of the UE and the identifier information of the LTE PLMN registered by the UE to the 2G/3G base station that provides the CS domain access service for the UE, so that 2G/ The 3G base station identifies the UE and the LTE registered by the UE.
- the identifier information of the PLMN is sent to the LTE base station that is adjacent and can provide the LTE access service after the CSFB service ends.
- the neighboring base stations include the LTE base station that is registered when the UE initiates the CSFB.
- the LTE base station saves the identifier of the UE that is sent by the 2G/3G base station and the identifier information of the LTE PLMN that is registered by the UE, so that when the LTE base station receives the connection establishment request message that is sent by the UE and includes the UE identifier, the LTE base station may And the identifier information of the stored LTE PLMN that is registered by the UE is an LTE PLMN that is registered when the UE selects to initiate the CSFB service.
- the 2G/3G base station may be known in advance to the base station that can provide the LTE access service adjacent to the 2G/3G base station, for example, based on the network configuration or using the automatic neighbor relationship to learn the neighboring eNodeB, the UE may be The identifier and the identity information of the LTE PLMN are sent to each of the neighboring base stations that provide the LTE access service. Since the UE initiates the CSFB when the LTE service is performed in the LTE base station, the nearby 2G/3G base station that can provide the CS domain service is selected nearby, so the LTE base station previously registered by the UE and the 2G/3G base station performing the CSFB service are phased. Neighboring.
- the LTE base station receives the identifier of the UE sent by the 2G/3G base station and the identifier information of the LTE PLMN and saves, so that when the UE searches for the suitable cell to return to the LTE network, if the LTE base station serves the LTE network, the LTE base station can determine and select the LTE base station.
- the serving MSC/VLR acquires the identifier of the UE and the UELTE PLMN from the registration information of the UE. Identification information. If the serving MSC/VLR is not the registered MSC/VLR of the UE, the serving MSC/VLR acquires the identifier of the UE and the identity information of the UELTE PLMN from the registered MSC/VLR of the UE.
- the identifier of the UE may be a System Architecture Evolution (SAE) temporary mobile subscriber identity (SAE Temporary Mobile Subscriber) Identity, S-TMSI), International Mobile Subscriber Identity (IMSI) or Temporary Mobile Subscriber Identity (TMSI), which is not limited by this embodiment of the present invention.
- SAE System Architecture Evolution
- S-TMSI temporary mobile subscriber identity
- IMSI International Mobile Subscriber Identity
- TMSI Temporary Mobile Subscriber Identity
- the identifier information of the LTE PLMN that is registered by the UE may be a registered LTE PLMN identity (ID), or may be a Globally Unique Temporary Identity (GUTI) including the registered LTE PLMN ID, or may be included
- ID LTE PLMN identity
- GUI Globally Unique Temporary Identity
- TAI Tracking Area Identity
- ECGI E-UTRAN Cell Global Identity
- the connection establishment request message is sent by the UE after the CS28 service is terminated in the initiated circuit domain, and the LTE base station is a base station that can provide an LTE access service, for example, an eNodeB.
- the LTE base station can be shared by at least two LTE PLMNs, that is, the LTE base station can provide LTE access services for at least two PLMNs.
- the LTE base station can provide LTE access service for PLMN1 and LTE access service for PLMN2.
- the LTE public land mobile network identifies the identity information of the PLMN, and the LTE base station selects the LTE PLMN corresponding to the identifier information of the LTE PLMN.
- the LTE base station can learn the identifier of the UE and the identifier information of the LTE PLMN, so that the UE identifier sent by the UE is matched with the saved UE identifier, and the LTE PLMN corresponding to the UE identifier is determined. Identification information.
- the LTE base station can uniquely determine the corresponding LTE PLMN through the identification information of the LTE PLMN and select the LTE PLMN to provide the LTE service for the UE.
- the method for selecting an LTE network provided by the embodiment of the present invention, when the UE ends in the CSFB service
- the LTE PLMN that is registered when the UE initiates the CSFB is determined and selected according to the UE identifier sent by the UE and the identifier of the saved UE, and is returned to the LTE network after the CSFB defined by the prior art.
- it can ensure that the UE returns to the LTE PLMN registered when the CSFB is initiated, which can reduce unnecessary PLMN inter-network handover, and can resume the suspended data service in the previously registered LTE PLMN, thereby improving service efficiency and improving. user experience.
- Another embodiment of the present invention provides a method for selecting an LTE network. As shown in FIG. 2, the method includes:
- the UE initiates joint registration and successfully registers to the PLMN1 supporting the LTE network and the PLMN2 supporting the 2G/3G network.
- the UE that resides in the E-UTRAN and supports CSFB needs to initiate a joint registration process to implement simultaneous registration to the EPC network PS domain and the 2G/3G network CS domain.
- the UE registers with the PS domain network (LTE PLMN1)
- the source MSC/VLR in PLMN2 can acquire the identity of the UE and the PLMN ID 1 of PLMN1.
- the network side selects the source MSC/VLR for the UE:
- the Mobile Management Entity selects a source MSC/VLR that can serve the UE.
- a location update request is sent to the selected source MSC/VLR to establish an SGs association.
- the source MSC/VLR sends a registration request to the Home Location Register (HLR) and acquires the CS domain subscription data of the UE to implement registration of the UE in the CS domain.
- HLR Home Location Register
- the MME selects a serving MSC/VLR according to the current location information of the UE.
- the MME is configured according to the MME.
- the current location information and the International Mobile Subscriber Identity (IMSI) hash table select a serving MSC/VLR from the MSC pool.
- IMSI International Mobile Subscriber Identity
- the UE initiates CSFB in PLMN1 and successfully falls back to the 2G/3G network of PLMN2.
- CSFB business can be initiated normally after successful joint registration.
- the MME in the LTE network selects a CS serving PLMN ID for the UE and sends the selected CS serving PLMN ID to the LTE base station (eNodeB) in the LTE network, in order to inform the LTE base station (eNodeB)
- the UE should be dropped back to the CS domain network corresponding to the CS PLMN ID.
- the CS domain service can be initiated.
- the UE may send a CSFB indication to the serving MSC/VLR, and the CSFB indication is used to indicate that the current voice call is triggered by executing CSFB in the LTE network.
- the UE makes a voice call.
- Step 203 The source MSC/VLR sends the identifier of the UE and the PLMN ID1 to the serving MSC/VLR.
- Step 203 is an optional step. If the serving MSC/VLR that the UE drops back to the 2G/3G network is the source MSC/VLR, step 203 is not performed. Step 203 is performed only when the serving MSC/VLR of the UE is not the source MSC/VLR registered in step 201.
- the source MSC/VLR may obtain the identifier of the UE from the registration information. For example, in the joint registration process, the MME sends the UE's international mobile subscriber identity IMSI to the source MSC/VLR. Alternatively, the MME may also send the SAE temporary mobile subscriber identity S-TMSI of the UE to the source MSC/VLR. Further, the source MSC/VLR may acquire the PLMN ID 1 registered by the UE from the registration information. For example, in the joint registration process, the MME sends its MME name (name) to the source MSC/VLR, and the MME name contains the PLMN ID1 registered by the UE.
- the MME sends its MME name (name) to the source MSC/VLR, and the MME name contains the PLMN ID1 registered by the UE.
- the MME can go to the source
- the MSC/VLR sends a Tracking Area Identity (TAI) or an E-UTRAN Cell Global Identity (ECGI), and the UE registers the PLMN ID1 in the TAI or ECGI.
- TAI Tracking Area Identity
- ECGI E-UTRAN Cell Global Identity
- the UE if the UE falls back to the 2G/3G network and enters another MSC/VLR, that is, the service range of the serving MSC/VLR, the UE will source MSC/ during the location update process with the serving MSC/VLR.
- the location information of the VLR is reported to the serving MSC/VLR.
- the serving MSC/VLR sends a Mobile Application Part (MAP) protocol to send an identity request message (SEND IDENTIFICATION) to the source MSC/VLR according to the location information reported by the UE, requesting to obtain the identity of the UE and the registered PLMN ID1, the source.
- MAP Mobile Application Part
- the MSC/VLR sends the identity of the UE acquired in step 201 and the registered PLMN ID1 to the serving MSC/VLR in the MAP protocol sending identity response message.
- the UE performs a CS domain service in the PLMN2.
- the CS domain service performed after the CSFB may include initiating or receiving a voice call, a supplementary service, or a location service.
- the serving MSC/VLR sends a first connection release message to the 2G/3G base station, where the first connection release message includes a CSFB indication, a UE identifier, and a PLMN ID1, that is, 2G/3G.
- the base station learns that the UE's CSFB service ends.
- the serving MSC/VLR initiates a connection release procedure to the base station, and carries the CSFB indication, the UE identifier, and the PLMN ID1 in the first connection release message.
- the CSFB indication is used to indicate that the CS domain service of the current UE is caused by the CSFB, and after the CS domain service ends, the UE needs to be redirected back to the LTE network.
- the UE identifier sent by the serving MSC/VLR to the 2G/3G base station may be the SAE temporary mobile subscriber identity S-TMSI, the international mobile subscriber identity IMSI or the temporary mobile subscriber of the UE.
- the identifier (Temporary Mobile Subscriber Identity, TMSI) is not limited in this embodiment of the present invention.
- the identifier information of the registered LTE PLMN that the MSC/VLR sends to the 2G/3G base station may be a registered LTE PLMN identity (ID), or may be a globally unique temporary identifier (Globally Unique Temporary Identity) including the registered LTE PLMN ID.
- the GUTI can also be a Tracking Area Identity (TAI) including the registered LTE PLMN ID, and can also be an E-UTRAN Cell Global Identity (ECGI) including the registered LTE PLMN ID.
- TAI Tracking Area Identity
- ECGI E-UTRAN Cell Global Identity
- the identifier information of the LTE PLMN that is only registered with the PLMN ID 1 is taken as an example.
- the identifier information of the LTE PLMN of the other forms is not described in detail in the embodiment of the present invention.
- the 2G/3G base station sends the UE identifier and the PLMN ID1 to the neighboring base station that provides the LTE access service, where the neighboring base station providing the LTE access service includes the UE providing the LTE access service when the UE initiates the CSFB. LTE base station.
- the 2G/3G base station may send the acquired UE identifier and the registered LTE PLMN ID1 to the neighboring base station providing the LTE access service through the RAN Information Management (RIM).
- the LTE base station saves the received UE identity and the PLMN ID1.
- the 2G/3G base station can learn the neighboring base stations that provide the LTE access service through the configuration of the network management system, and can also discover the neighboring base stations that provide the LTE access service through the automatic neighbor discovery process.
- the identifier of the UE and the identifier information of the LTE PLMN registered by the UE may not be permanently saved.
- the LTE base station learns that the UE initiates the CSFB process it may start a timer.
- the timer expires the saved identifier of the UE and the LTE PLMN ID 1 registered by the UE are deleted, where the timer may be based on Storage space size, traffic busyness, and UE of LTE base station Factors such as priority are set in advance, and the present invention is not limited.
- the identifier of the saved UE and the LTE PLMN ID 1 registered by the UE may be deleted by using other trigger conditions, for example, when the identifier of the saved UE and the identifier information of the LTE PLMN registered by the UE reach a certain capacity, or reach For a certain number, the identifier of the earliest saved UE and the identifier information of the LTE PLMN registered by the UE are deleted until the saved UE identifier and the identifier information of the LTE PLMN are lower than or equal to the saved preset capacity or quantity.
- the 2G/3G base station selects LTE frequency band (Frequency) information according to the CSFB indication.
- the LTE frequency band is selected by the 2G/3G base station to select the LTE frequency band for the UE after receiving the first connection release message, and the determined LTE frequency band information may be the LTE frequency band information supported by the LTE PLMN, or may be corresponding to the PLMN2.
- the LTE frequency band information may also be the LTE frequency band information supported by other PLMNs, which is not described in detail in this embodiment of the present invention.
- the 2G/3G base station sends a second connection release message to the UE, where the second connection release message includes the LTE frequency band information selected in step 207.
- the first connection release message and the second connection release message mentioned in the specification of the present application may be a radio resource (RR) connection release message or a radio resource control (RRC) connection release message. , or other messages used to assist in the release of radio resources.
- RR radio resource
- RRC radio resource control
- the RNS sends an RRC connection release message to the UE, where the RRC connection release message includes a redirection indication, which is used to indicate that the UE releases the RRC connection and redirects back to the LTE network; and uses the LTE frequency band information as the Redirect the content of the indication, The UE is instructed to redirect back to the LTE network corresponding to the LTE frequency band.
- the RRC connection release message includes a redirection indication, which is used to indicate that the UE releases the RRC connection and redirects back to the LTE network; and uses the LTE frequency band information as the Redirect the content of the indication, The UE is instructed to redirect back to the LTE network corresponding to the LTE frequency band.
- the UE searches for a suitable cell and camps on the LTE frequency band.
- the UE After releasing the current RR/RRC connection, the UE searches for a suitable cell in the LTE frequency band according to the LTE frequency band information specified in the redirection indication, and camps on the suitable cell searched in the LTE frequency band.
- the suitable cell is a cell that the UE can camp on and can acquire normal traffic.
- the UE that is searched in the LTE frequency band may not be able to obtain the normal service (for example, only the emergency service), that is, the non-suitable cell. In this case, the UE may re-search for the appropriate cell in all frequency bands, but It is not considered in the scope of the embodiments of the present invention, and will not be described again.
- the UE may enter any eNB that provides the LTE access service in the vicinity of the current 2G/3G base station, including the LTE base station when the UE initiates the CSFB.
- this step and the following step 210 the LTE base station when the UE enters the previous CSFB is taken as an example. If the UE enters another neighboring base station providing the LTE access service, it performs the same action as the LTE base station.
- the UE sends a connection establishment request message to the LTE base station, where the connection establishment request message includes an identifier of the UE.
- the identifier of the UE may be a System Architecture Evolution (SAE) SAE Temporary Mobile Subscriber Identity (S-TMSI), an International Mobile Subscriber Identity (IMSI), or a temporary mobile subscriber identity. (Temporary Mobile Subscriber Identity, TMSI), which is not limited in this embodiment of the present invention.
- SAE System Architecture Evolution
- S-TMSI Temporary Mobile Subscriber Identity
- IMSI International Mobile Subscriber Identity
- TMSI Temporary Mobile Subscriber Identity
- the UE if the UE enters another neighboring base station that provides the LTE access service, the UE sends a connection establishment request message including the UE identifier to the base station. 211.
- the LTE base station matches the identifier of the UE included in the connection setup request message with the saved UE identifier, and determines the PLMN ID1 registered by the UE.
- the PLMN corresponding to the PLMN ID1 registered by the UE is selected, and the LTE access is provided for the UE. service.
- the UE In order to return to the LTE network for the PS service, the UE initiates a joint tracking area updating (TAU) process, and initiates a connection establishment process in the PLMN1 to restore the suspended data service in the PLMN1.
- TAU joint tracking area updating
- the LTE base station has acquired and saved the identifier of the UE, and the identifier information of the LTE PLMN registered by the UE corresponding to the identifier of the UE, so in this step, the PLMN ID1 registered by the UE when the CSFB is initiated may be queried. .
- the connection establishment request message sent by the UE may further include the identifier information of the LTE PLMN selected by the UE, and the LTE base station may match the identifier of the UE with the saved UE identifier, and compare the identifier information of the LTE PLMN selected by the UE with the saved information. Whether the identifier information of the LTE PLMN registered by the UE is the same; if the two are different, the LTE base station may replace the identifier information of the LTE PLMN included in the connection setup request message with the identifier information of the registered LTE PLMN, and send the identifier information to the LTE The MME connected to the base station to complete the TAU process.
- the method for selecting an LTE network when the UE initiates a connection setup request message to the LTE network, the LTE base station determines that the UE is registered when the CSFB is initiated according to the UE identifier sent by the UE and the identifier of the saved UE.
- the identification information of the LTE PLMN can ensure that the UE returns to the LTE PLMN registered when the CSFB is initiated, which not only reduces unnecessary PLMN inter-network handover, but also recovers the suspended data service in the previously registered LTE PLMN, and improves the service. Efficiency, enhance the user experience.
- Another embodiment of the present invention provides a method for selecting an LTE network, as shown in FIG. 3, Methods include:
- the UE initiates joint registration and successfully registers to the PLMN1 supporting the LTE network and the PLMN2 supporting the 2G/3G network.
- the UE initiates CSFB in PLMN1 and successfully falls back to the 2G/3G network of PLMN2.
- the steps 301-302 are similar to the embodiment shown in FIG. 2, and the embodiments of the present invention are not described in detail.
- the LTE base station saves the identifier of the UE and the LTE PLMN registered by the UE.
- the LTE base station saves the identifier of the UE and the identifier information of the UE LTE PLMN is used to select the LTE PLMN that is registered when the CSFB is initiated for the UE when the LTE network is selected after the UE CSFB service ends.
- the identity of the UE and the identity information of the LTE PLMN registered by the UE are not permanently saved.
- the LTE base station learns that the UE initiates the CSFB process, it may start a timer.
- the saved identifier of the UE and the LTE PLMN ID 1 registered by the UE are deleted, where the timer may be based on The storage space size of the LTE base station, the busyness of the service, and the priority of the UE are preset, and the present invention is not limited.
- the identifier of the saved UE and the LTE PLMN ID 1 registered by the UE may be deleted by using other trigger conditions, for example, when the identifier of the saved UE and the identifier information of the LTE PLMN registered by the UE reach a certain capacity, or reach For a certain number, the identifier of the earliest saved UE and the identifier information of the LTE PLMN registered by the UE are deleted until the saved UE identifier and the identifier information of the LTE PLMN are lower than or equal to the saved preset capacity or quantity.
- the serving MSC/VLR sends the second to the 2G/3G base station.
- a connection release message, the first connection release message includes a CSFB indication.
- the CSFB indication is used to indicate that the CS domain service currently ending by the UE is caused by CSFB, and needs to be returned to the LTE network after the CS domain service ends.
- the 2G/3G base station sends a second connection release message to the UE, and includes LTE frequency band information in the second connection release message.
- the UE searches for a suitable cell of the LTE base station and camps on the LTE frequency band.
- the UE sends a connection setup request message to the LTE base station, where the connection setup request message includes the identifier of the UE.
- steps 304-307 are prior art, and the present invention is not described in detail.
- the LTE base station matches the identifier of the UE included in the connection setup request message with the saved UE identifier, and determines the PLMN ID1 registered by the UE.
- the PLMN corresponding to the PLMN ID1 registered by the UE is selected, and the LTE access is provided for the UE. service.
- the LTE base station may select the PLMN corresponding to the registered PLMN ID1 for the UE according to the saved UE identifier in step 303 and the identifier information of the LTE PLMN that is registered by the UE and the identifier of the UE included in the connection setup request message, and provide the UE with the PLMN corresponding to the registered PLMN ID1.
- LTE access service The specific implementation of the step 308 is similar to the implementation of the step 211 in the embodiment corresponding to FIG. 2, and reference may be made to the corresponding content in the step 211.
- the 2G/3G base station sends the identifier of the UE and the identifier information of the LTE PLMN registered by the UE to the LTE base station, so that when the UE initiates to the LTE network,
- the LTE base station may determine, according to the UE identity sent by the UE, the identity information of the LTE PLMN that is registered by the UE when the CSFB is initiated, and may ensure that the UE returns to the LTE PLMN registered when the CSFB is initiated, Less unnecessary PLMN inter-network handover can restore the suspended data service in the LTE PLMN registered when the CSFB is initiated, improving service efficiency and improving user experience.
- Another embodiment of the present invention provides a method for selecting an LTE network, where the UE saves the identifier information of the LTE PLMN registered when the CSFB is initiated, and updates the list of the equivalent PLMN with the saved identifier information of the LTE PLMN, as shown in FIG. , the method includes:
- the user equipment UE is jointly registered in the LTE public land mobile network PLMN.
- the UE can simultaneously register to the 2G/3G network and the LTE network, and can perform data services in the LTE network.
- the CSFB process can be initiated and dropped back to the 2G/3G network.
- the UE initiates a circuit domain fallback CSFB service falls back to the 2G/3G network.
- the identifier information of the LTE PLMN registered in the step 401 may be saved. It should be noted that, in the registration process in step 401, the UE has saved the identifier information of the registered LTE PLMN, for example, the global unique temporary identifier GUTI including the registered LTE PLMN ID or the tracking domain including the registered LTE PLMN ID.
- the identification of the TAI, in this step the UE does not need to repeatedly save the identifier information of the registered LTE PLMN.
- the identifier information of the LTE PLMN in step 403 and step 404 is the identifier information of the LTE PLMN saved in step 401.
- the identifier information of the stored LTE PLMN may be: an LTE PLMN identity (ID), or a Tracking Area Identity (TAI) including the LTE PLMN ID. To include the Globally Unique Temporary Identity (GUTI) of the registered LTE PLMN ID.
- ID LTE PLMN identity
- TAI Tracking Area Identity
- GUI Globally Unique Temporary Identity
- the UE may save the selected time when the joint registration is initiated to the LTE PLMN in step 401.
- the selected LTE frequency band (Frequency) information, the LTE frequency band corresponding to the LTE frequency band information is also the LTE frequency band selected when the CSFB is initiated in this step. It should be noted that the LTE PLMN registered in step 401 can support multiple LTE frequency bands.
- the UE receives an equivalent PLMN list on the 2G/3G network, and adds the identifier information of the LTE PLMN to an equivalent PLMN list.
- the UE initiates the CSFB process and then falls back to a new location area (LA) of the 2G/3G network
- the UE initiates a CS domain location area update (LAU) process to the serving MSC/VLR.
- LAU CS domain location area update
- the serving MSC/VLR may send an equalized PLMN list to the UE, so that the idle state UE performs cell selection/reselection and PLMN selection.
- the UE initiates the CSFB process and then falls back to a new routing area (RA) of the 2G/3G network
- the UE initiates a PS domain routing domain update process to the SGSN.
- the SGSN may send an equivalent PLMN list to the UE, so that the idle state UE performs cell selection/reselection and PLMN selection.
- the serving MSC/VLR and the SGSN may send the same equivalent PLMN list to the UE.
- the UE After the UE receives the equivalent PLMN list on the 2G/3G network, the UE saves the received equivalent PLMN list to replace the previously saved equivalent PLMN list. Further, the UE adds the identifier of the LTE PLMN saved in step 402. Information is added to the list of equivalent PLMNs. It should be noted that the identifier information of the LTE PLMN is added to the list of the equivalent PLMNs, and the PLMN ID is generally added to the list of the equivalent PLMNs, for example, the PLMN ID included in the GUTI is added to the list of the equivalent PLMNs.
- the UE does not need to add the identity information of the LTE PLMN saved in step 402 to the saved equivalent PLMN list, because the saved equivalent PLMN list already contains the LTE PLMN saved in step 402. Identification information.
- the saved information of the LTE PLMN is added to the equivalent PLMN list by using the 403, and the appropriate cell reservation may be selected according to the updated equivalent PLMN list when performing the PLMN selection, that is, The appropriate cell camp is selected according to the equivalent PLMN list containing the identity information of the LTE PLMN, and the LTE PLMN is selected from the available PLMNs of the selected suitable cell.
- performing the PLMN selection according to the equivalent PLMN list may include: preferentially selecting, according to the equivalent PLMN list, an LTE PLMN corresponding to the identifier information of the LTE PLMN, that is, from all available PLMNs of the selected suitable cell, The PLMN corresponding to the saved identification information of the LTE PLMN is preferentially selected.
- the preferentially selecting the LTE PLMN may include: selecting, according to the equivalent PLMN list, a suitable cell to camp on a frequency band corresponding to the LTE frequency band information, from available PLMNs of the suitable cell. The PLMN corresponding to the saved identification information of the LTE PLMN is preferentially selected.
- the LTE frequency band information may be information about an LTE frequency band selected by the UE when initiating joint registration with the LTE PLMN.
- the UE may also save the LTE frequency band information selected when the joint registration is initiated to the LTE PLMN; thus, when the CSFB service needs to be returned to the LTE, the The equivalent PLMN list selects a suitable cell to camp on a frequency band corresponding to the LTE frequency band information, and preferentially selects the available PLMN from the suitable cell.
- the LTE frequency band information may be received by the UE from the 2G/3 G network.
- the UE receives the LTE frequency band information sent by the 2G/3G base station in the 2G/3G network; in this case, when the CSFB service needs to be returned to the LTE, the appropriate cell can be selected according to the equivalent PLMN list in the frequency band corresponding to the LTE frequency band information. (Appropriate Cell) camping, preferentially selecting a PLMN corresponding to the identifier information of the saved LTE PLMN from the available PLMNs of the suitable cell.
- the 2G/3G base station may select the LTE frequency segment information by using any of the following implementation manners:
- the 2G/3G base station receives the connection release message sent by the serving MSC/VLR, where the connection release message includes the identifier information of the LTE PLMN registered by the user equipment UE when the CSFB service is initiated, that is, The identification information of the LTE PLMN registered by the UE in step 401, and then the 2G/3G base station may select the LTE frequency band (Frequency) information according to the identification information of the LTE PLMN.
- the 2G/3G base station may select the LTE frequency band information according to the identifier information of the LTE PLMN, and the 2G/3G base station may select the LTE frequency band information as a consideration factor, 2G/3G.
- the base station may also consider other factors to select the LT E-band information, which is not limited in this embodiment.
- the serving MSC/VLR may not send the identifier information of the LTE PLMN registered by the UE to the 2G/3G base station, that is, the 2G/3G base station and the serving MSC/VLR on the network side.
- the existing connection release procedure is adopted.
- the 2G/3G base station may select the LTE frequency band (Frequency) information according to the CSFB indication received from the serving MSC/VLR, and the selected LTE frequency band information may be the service PLMN that provides the CSFB service for the UE.
- the supported LTE band information may also be other LTE band information.
- the 2G/3G base station may send the selected LTE frequency band information to the UE by using any of the following implementation manners:
- the 2G/3G base station may send the selected LTE frequency band information to the UE in a connection release message or a channel release message.
- the selected LTE frequency band information is included in a channel release (Channel Release) message and sent to the UE; if the 2G/3G base station is in the 3G network
- the radio network subsystem RNS then sends the selected LTE frequency band information to the UE in an RRC connection release message. After receiving the connection release message or the channel release message, the UE enters an idle state.
- the 2G/3G base station may include the selected LTE frequency band information in the priority information, and then, if the 2G/3G base station is the base station subsystem BSS in the 2G network, then 2G/ The 3G base station includes the priority information in a channel release (Channel Release) message and sends the signal to the UE; if the 2G/3G base station is a radio network subsystem RNS in the 3G network, the 2G/3G base station includes the priority information in the mobile The Mobility Information message is sent to the UE.
- Channel Release Channel Release
- the UE adds the identifier information of the LTE PLMN registered when the CSFB service is initiated to the equivalent PLMN list, and after the CSFB service ends, may select the LTE PLMN according to the updated equivalent PLMN list.
- the LTE network to ensure that the UE can return to the LTE PLMN registered when CSFB is initiated, which can reduce unnecessary PLMN inter-network handover, and can resume data services suspended in the previously registered LTE PLMN, thereby improving service efficiency. , enhance the user experience.
- Another embodiment of the present invention provides a method for selecting an LTE network, where the UE does not need to update the equivalent.
- the PLMN list includes:
- the UE is jointly registered with the LTE Public Land Mobile Network PLMN.
- the UE can simultaneously register to the 2G/3G network and the LTE network, and can perform data services in the LTE network.
- the CSFB process can be initiated and dropped back to the 2G/3G network.
- the UE initiates a circuit domain fallback CSFB service to fall back to the 2G/3G network, and saves the LTE frequency band information, where the LTE frequency band information is LTE frequency band information that is selected when the UE sends a joint registration to the LTE PLMN.
- the UE may save the identifier information of the LTE PLMN that is registered when the CSFB service is initiated, where the identifier information of the saved LTE PLMN may be: the LTE PLMN identifier (identity, ID), and may also include the registered LTE PLMN ID.
- the Tracking Area Identity (TAI) may also be a Globally Unique Temporary Identity (GUTI) containing the registered LTE PLMN ID.
- GUI Globally Unique Temporary Identity
- the UE After the CSFB service ends, the UE performs PLMN selection on a frequency segment corresponding to the LTE frequency band information.
- the performing the PLMN selection on the frequency band corresponding to the LTE frequency band information includes: selecting a suitable cell to camp on the frequency band corresponding to the LTE frequency band information, and prioritizing from available PLMNs of the suitable cell
- the LTE PLMN corresponding to the saved identity information of the LTE PLMN is selected.
- the method for selecting an LTE network provided by the embodiment of the present invention, the UE performs PLMN selection on the LTE frequency band information selected when the joint registration is initiated, to ensure that the UE can return to the LTE PLMN registered when the CSFB is initiated, and reduce unnecessary PLMN. Inter-network handover, which can restore data services suspended in previously registered LTE PLMNs, improve service efficiency, and improve User experience.
- Another embodiment of the present invention provides a method for selecting an LTE network. As shown in FIG. 6, the method includes:
- the 2G/3G base station receives the connection release message sent by the serving MSC/VLR, where the connection release message includes the identifier information of the LTE public land mobile network PLMN that is registered when the user equipment UE initiates the CSFB service, where the 2G/ The 3G base station is a base station that provides services for the CSFB service.
- the 2G/3G base station is a base station serving the UE's CS service, and the UE performs CSFB service in the serving cell of the 2G/3G base station.
- the 2G/3G base station may be a BSS/RNS.
- the serving MSC/VLR may send the CSFB indication, the identifier of the UE, and the identifier information of the LTE PLMN registered by the UE when the CSFB is initiated, to the 2G/3G base station. In this way, when the CSFB service of the UE ends, it can return to the LTE network registered when the CSFB was previously initiated.
- the serving MSC/VLR acquires the identifier of the UE and the UELTE PLMN from the registration information of the UE. Identification information. If the serving MSC/VLR is not the registered MSC/VLR of the UE, the serving MSC/VLR acquires the identifier of the UE and the identity information of the UELTE PLMN from the registered MSC/VLR of the UE.
- the identifier of the UE may be a system architecture evolution (System Architecture
- the identifier information of the LTE PLMN that is registered by the UE when the CSFB service is initiated may be a registered LTE PLMN identifier (identity, ID), or may be a Globally Unique Temporary Identity (GUTI) including the registered LTE PLMN ID. It may also be a Tracking Area Identity (TAI) containing the registered LTE PLMN ID, or may be an E-UTRAN Cell Global Identity (ECGI) including the registered LTE PLMN ID. The embodiment of the invention does not limit this.
- the 2G/3G base station selects target frequency band information according to the identifier information of the LTE PLMN, and sends the target frequency band information to the UE, where the target frequency band information is used to indicate that the UE is in the target frequency band information.
- the cell camp is selected on the corresponding frequency band.
- the 2G/3G base station selects the target frequency band information according to the identifier information of the LTE PLMN, and the 2G/3G base station can select the LTE frequency band information by using the identifier information of the LTE PLMN as a consideration, and the second base station Other factors may be considered to select the LTE frequency band information, which is not limited in this embodiment.
- the sending the target frequency band information to the UE may include: sending, by the 2G/3G base station, the selected target frequency band information to the UE by using any one of the following implementation manners:
- the 2G/3G base station may send the selected target frequency band information to the UE in a connection release message or a channel release message.
- the selected target frequency band information is included in a channel release (Channel Release) message and sent to the UE; if the 2G/3G base station is in the 3G network
- the radio network subsystem RNS then sends the selected target frequency band information to the UE in an RRC connection release message. After receiving the connection release message or the channel release message, the UE Enter the idle state.
- the 2G/3G base station may include the selected target frequency band information in the priority information, and then, if the 2G/3G base station is the base station subsystem BSS in the 2G network, then 2G/ The 3G base station includes the priority information in a channel release (Channel Release) message and sends the signal to the UE; if the 2G/3G base station is a radio network subsystem RNS in the 3G network, the 2G/3G base station includes the priority information in the mobile The Mobility Information message is sent to the UE.
- Channel Release Channel Release
- the UE selects a suitable cell to camp on the LTE frequency band corresponding to the target frequency band information selected by the 2G/3G base station according to the equivalent PLMN list, and preferentially selects LTE from the available PLMNs of the suitable cell.
- the PLMN corresponding to the identification information of the PLMN.
- the UE may preferentially be in accordance with the saved equivalent PLMN list.
- a suitable cell is selected on the LTE frequency band corresponding to the saved LTE frequency band information, and the PLMN corresponding to the stored identity information of the LTE PLMN is preferentially selected from the available PLMNs of the suitable cell.
- the method for selecting an LTE network provided by the embodiment of the present invention, after the CSFB service of the UE ends, the 2G/3G base station selects the target frequency band information and sends the information to the UE according to the identifier information of the LTE PLMN registered by the UE, so that when the UE initiates the connection to the LTE network,
- the LTE cell camping is selected on the frequency band corresponding to the target frequency band information, which can ensure that the UE searches for the cell in the frequency band before the CSFB is initiated, to return to the LTE PLMN registered when the CSFB is initiated, which reduces unnecessary
- the PLMN network switching can restore the data service suspended in the previously registered LTE PLMN, improve service efficiency, and improve user experience.
- Another embodiment of the present invention provides a UE, as shown in FIG. 7, including: a processor 72 and a receiver 71.
- the receiver 71 is configured to jointly register the UE in the long-term evolution LTE public land mobile network PLMN, and initiate the circuit domain fallback CSFB service to fall back to the second generation/third generation 2G/3G network, from the 2G/3G network. Receiving an equivalent PLMN list;
- the processor 72 is configured to add the identifier information of the LTE PLMN to the equivalent PLMN list received by the receiver 71; after the CSFB service ends, perform PLMN selection according to the equivalent PLMN list.
- the processor 72 is configured to: preferentially select the LTE PLMN according to the equivalent PLMN list.
- the processor 72 is configured to: select, according to the equal-cost PLMN list, a cell on a frequency band corresponding to the LTE frequency band information, and preferentially select the LTE PLMN from an available PLMN of the cell;
- the LTE frequency band information is information of an LTE frequency band selected by the UE when initiating joint registration with the LTE PLMN.
- the processor 72 is configured to: select, according to the equal-cost PLMN list, a cell on a frequency band corresponding to the LTE frequency band information, and preferentially select the LTE PLMN from an available PLMN of the cell;
- the LTE band information is received by the UE from the 2G/3G network.
- the UE provided by the embodiment of the present invention adds the identifier information of the LTE PLMN that is registered when the CSFB service is initiated to the equivalent PLMN list.
- the LTE PLMN can be selected to be returned to the LTE network according to the updated equivalent PLMN list.
- the unnecessary PLMN inter-network handover can be reduced, and the data service suspended in the previously registered LTE PLMN can be restored, thereby improving the service efficiency. Rate, improve user experience.
- Another embodiment of the present invention provides a UE, as shown in FIG. 8, including: a transceiver 81 and a processor 82.
- a transceiver 81 configured to interact with a network device to jointly register with the LTE public land mobile network PLMN;
- the processor 82 is configured to perform PLMN selection on a frequency band corresponding to the LTE frequency band information after the CSFB service is terminated in the circuit domain, where the LTE frequency band information is selected when the UE initiates joint registration with the LTE PLMN. Information on the LTE band.
- the processor 82 is configured to: select a cell on a frequency band corresponding to the LTE frequency band information, and preferentially select the LTE PLMN from an available PLMN of the cell.
- the UE further includes: a memory 83.
- the memory 83 is configured to save the LTE frequency band information when the transceiver initiates the CSFB service to fall back to the circuit domain;
- the processor 82 is further configured to acquire the LTE frequency band information from the memory 83 after the circuit domain falls back to the CSFB service.
- the UE provided by the embodiment of the present invention performs PLMN selection on the LTE frequency band information selected when the joint registration is initiated to ensure that the UE can return to the LTE PLMN registered when the CSFB is initiated, thereby reducing unnecessary PLMN inter-network handover, and The data service suspended in the previously registered LTE PLMN can be restored, improving service efficiency and improving the user experience.
- Another embodiment of the present invention provides a 2G/3G base station, which is configured to provide services for a circuit domain fallback CSFB service. As shown in FIG. 9, the 2G/3G base station includes: a receiver 91, a processor 92, Transmitter 93.
- the receiver 91 is configured to receive a connection release message sent by the serving mobile switching center/visiting location register MSC/VLR, where the connection release message includes the LTE public land mobile network PLMN registered when the user equipment UE initiates the CSFB service.
- Identification information the 2G/3G base station is a base station serving the CSFB service;
- the processor 92 is configured to select target frequency band information according to the identifier information of the LTE PLMN received by the receiver 91.
- the transmitter 93 is configured to send the target frequency band information selected by the processor 92 to the UE, where the target frequency band information is used to indicate that the UE selects a cell camping on a frequency band corresponding to the target frequency band information.
- the transmitter 93 is configured to: send priority information to the UE, where the priority information includes the frequency band information.
- the 2G/3G base station selects the target frequency band information and sends the information to the UE according to the identifier information of the LTE PLMN that is registered by the UE, so that when the UE initiates the connection establishment request to the LTE network, the frequency band corresponding to the target frequency band information is used. Selecting the LTE cell camping can ensure that the UE searches for the cell in the frequency band before the CSFB is initiated, to return to the LTE PLMN registered when the CSFB is initiated, which reduces unnecessary PLMN inter-network handover, and can also recover the previously registered The data service that is suspended in the LTE PLMN improves service efficiency and enhances the user experience.
- Another embodiment of the present invention provides an LTE base station. As shown in FIG. 10, the base station includes: a receiver 1001 and a processor 1002.
- the receiver 1001 is configured to receive, after the UE ends the CSFB service in the circuit domain, send a connection establishment request message, where the connection establishment request message includes an identifier of the UE;
- the processor 1002 is configured to select the LTE PLMN corresponding to the identifier information of the LTE PLMN according to the identifier of the UE and the identifier information of the LTE public land mobile network PLMN that is registered when the UE initiates the CSFB service.
- the LTE base station further includes: a memory 1003.
- the receiver 1001 is further configured to receive the identifier of the UE sent by the 2G/3G base station and the identifier information of the LTE PLMN, where the 2G/3G base station is a base station serving the CSFB service;
- the memory 1003 is configured to save the identifier of the UE and the identifier information of the LTE PLMN that are sent by the 2G/3G base station that is received by the receiver 1001, where the 2G/3 G base station is the CSFB service.
- the base station that provides the service.
- the receiver 1001 is further configured to receive a connection release message sent by the serving mobile switching center/visiting location register MSC/VLR, where the connection release message includes the identifier of the UE and the LTE PLMN. Identifying information; transmitting, to the LTE base station, the identifier of the UE and the identifier information of the LTE PLMN.
- the serving MSC/VLR is the registered MSC/VLR of the UE
- the identifier of the UE and the identifier information of the LTE PLMN are obtained by the serving MSC/VLR from the registration information of the UE. Or;
- the serving MSC/VLR is not the registered MSC/VLR of the UE, the identity of the UE and the identity information of the LTE PLMN are obtained by the serving MSC/VLR from the registered MSC/VLR of the UE.
- the LTE base station provides when the UE initiates the CSFB service.
- the LTE base station further includes: a memory 1003, configured to save the identifier of the UE and the identifier information of the LTE PLMN when the UE initiates a CSFB service in the LTE PLMN.
- the processor 1002 is further configured to: delete the saved identifier of the UE and the identifier information of the LTE PLMN.
- the LTE base station determines, when the UE initiates a connection establishment request to the LTE network after the end of the CSFB service, according to the UE identifier sent by the UE and the identifier of the saved UE, determining and selecting the LTE when the UE initiates the CSFB.
- the identification information of the PLMN can be compared with the method of returning to the LTE network after the CSFB defined in the prior art, and can ensure that the UE returns to the LTE PLMN registered when the CSFB is initiated, which reduces unnecessary PLMN inter-network handover and can be restored before
- the suspended data service in the registered LTE PLMN improves service efficiency and enhances the user experience.
- Another embodiment of the present invention provides a UE, as shown in FIG. 11, including:
- the registration unit 1101 is configured to jointly register with the LTE public land mobile network PLMN; the fallback unit 1102 is configured to initiate the circuit domain fallback CSFB service to fall back to the 2G/3G network, and the receiving unit 1103 is configured to receive on the 2G/3G network, etc. a price PLMN list; a joining unit 1104, configured to add identity information of the LTE PLMN to the receiving unit
- the selecting unit 1105 is configured to perform PLMN selection according to the modified PLMN list modified by the joining unit 1105 after the CSFB service ends.
- selecting unit 1105 is configured to:
- selecting unit 1105 is specifically configured to:
- the LTE frequency band information is information of an LTE frequency band selected by the UE when initiating joint registration with the LTE PLMN.
- selecting unit 1105 is specifically configured to:
- the LTE frequency band information is received by the UE from the 2G/3G network.
- the UE provided by the embodiment of the present invention adds the identifier information of the LTE PLMN that is registered when the CSFB service is initiated to the equivalent PLMN list. After the CSFB service ends, the LTE PLMN can be selected to be returned to the LTE network according to the updated equivalent PLMN list. In order to ensure that the UE can return to the LTE PLMN registered when the CSFB is initiated, the unnecessary PLMN inter-network handover can be reduced, and the data service suspended in the previously registered LTE PLMN can be restored, thereby improving service efficiency and improving user experience.
- Another embodiment of the present invention provides a UE, as shown in FIG. 12, including: a registration unit 1201 and a selection unit 1202.
- a registration unit 1201 configured to jointly register with the LTE public land mobile network PLMN; and a selecting unit 1202, configured to: after the CSFB service is dropped in the circuit domain, in the LTE frequency band The PLMN selection is performed on the frequency band corresponding to the information, where the LTE frequency band information is information of the LTE frequency band selected when the UE initiates joint registration with the LTE PLMN.
- selecting unit 1202 is configured to:
- the UE further includes: a saving unit 1203.
- the saving unit 1203 is configured to save the LTE frequency band information when the CSFB service is initiated to fall back to the circuit domain.
- the selecting unit 1202 is configured to acquire the LTE frequency band information from the saving unit 1203 after the circuit domain falls back to the CSFB service.
- the UE provided by the embodiment of the present invention performs PLMN selection on the LTE frequency band information selected when the joint registration is initiated to ensure that the UE can return to the LTE PLMN registered when the CSFB is initiated, thereby reducing unnecessary PLMN inter-network handover, and The data service suspended in the previously registered LTE PLMN can be restored, improving service efficiency and improving the user experience.
- Another embodiment of the present invention further provides a 2G/3G base station, which is configured to provide services for a circuit domain fallback CSFB service. As shown in FIG. 13, the base station includes: a receiving unit 1301, a selecting unit 1302, and a sending unit 1303.
- the receiving unit 1301 is configured to receive a connection release message sent by the serving mobile switching center/visiting location register MSC/VLR, where the connection release message includes the LTE public land mobile network PLMN registered when the user equipment UE initiates the CSFB service.
- Identification information the 2G/3G base station is a base station serving the CSFB service;
- the selecting unit 1302 is configured to: according to the label of the LTE PLMN received by the receiving unit 1301 Identifying information, selecting target frequency band information, where the target frequency band information is used to indicate that the UE selects a cell to camp on a frequency band corresponding to the target frequency band information;
- the sending unit 1303 is configured to send the target frequency band information selected by the selecting unit 1302 to the UE.
- the sending unit 1303 is configured to:
- the base station provided by the embodiment of the present invention selects the target frequency band information and sends the information to the UE according to the identifier information of the LTE PLMN that is registered by the UE, so that when the UE initiates the connection establishment request to the LTE network, the LTE cell is selected in the frequency band corresponding to the target frequency band information. Residing, it can ensure that the UE searches for the cell in the frequency band before the CSFB is initiated, to return to the LTE PLMN registered when the CSFB is initiated, which reduces unnecessary PLMN inter-network handover and can be restored in the previously registered LTE PLMN. Suspended data services improve business efficiency and enhance user experience.
- Another embodiment of the present invention provides a base station, which may be an LTE base station. As shown in FIG. 14, the method includes: a receiving unit 1401, and a selecting unit 1402.
- the receiving unit 1401 is configured to receive, by the UE, a connection establishment request message that is sent after the UE returns the CSFB service in the circuit domain, where the connection establishment request message includes an identifier of the UE;
- the selecting unit 1402 is configured to select, according to the identifier of the UE that is received by the receiving unit 1401 and the identifier information of the LTE public land mobile network PLMN that is registered when the UE initiates the CSFB service, the location corresponding to the identifier information of the LTE PLMN. LTE PLMN.
- the receiving unit 1401 is further configured to:
- the connection release message sent by the serving mobile switching center/visiting location register MSC/VLR is received, where the connection release message includes the identifier of the UE and the identifier information of the LTE PLMN; the 2G/3G base station And transmitting, by the LTE base station, the identifier of the UE and the identifier information of the LTE PLMN.
- the serving MSC/VLR is the registered MSC/VLR of the UE
- the identifier of the UE and the identifier information of the LTE PLMN are obtained by the serving MSC/VLR from the registration information of the UE. Or;
- the serving MSC/VLR is not the registered MSC/VLR of the UE, the identity of the UE and the identity information of the LTE PLMN are obtained by the serving MSC/VLR from the registered MSC/VLR of the UE.
- the base station is a base station that provides an access service when the UE initiates the CSFB service; the base station further includes:
- the saving unit 1403 is configured to: when the UE initiates a CSFB service in the LTE PLMN, the LTE base station saves the identifier of the UE and the identifier information of the LTE PLMN.
- the base station further includes: a deleting unit 1404.
- the deleting unit 1404 is configured to delete the saved identifier of the UE and the identifier information of the LTE PLMN.
- the base station when the UE initiates a connection setup request to the LTE network after the CSFB service ends, determines, according to the UE identifier sent by the UE and the saved UE identifier, the LTE PLMN when the UE initiates the CSFB.
- the identification information can be compared with the method of returning to the LTE network after the CSFB defined in the prior art, and can ensure that the UE returns to the LTE PLMN registered when the CSFB is initiated, which reduces unnecessary PLMN inter-network handover, and can also recover the previous registration.
- the hanged data service in the LTE PLMN improves service efficiency and enhances User experience.
- the present invention can be implemented by means of software plus necessary general hardware, and of course, by hardware, but in many cases, the former is a better implementation. .
- the technical solution of the present invention which is essential or contributes to the prior art, may be embodied in the form of a software product stored in a readable storage medium, such as a floppy disk of a computer.
- a hard disk or optical disk or the like includes instructions for causing a computer device (which may be a personal computer, a server, or a network device, etc.) to perform the methods described in various embodiments of the present invention.
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Abstract
本发明公开了一种选择长期演进(LTE)网络的方法及设备,涉及通信技术领域,使得用户设备(UE)在电路域回落(CSFB)业务结束后可以回到发起CSFB时注册的LTE公共陆地移动网络(PLMN),保证分组域(PS)业务的连续性,避免不必要的PLMN网间切换,提升用户体验。本发明的方法主要包括:UE在LTE PLMN联合注册(401);发起CSFB业务回落到2G/3G网络(402);在所述2G/3G网络接收等价PLMN列表,并将所述LTE PLMN的标识信息加入所述等价PLMN列表(403);在所述CSFB业务结束后,所述UE根据所述等价PLMN列表进行PLMN选择(404)。本发明的实施例主要用于CSFB业务结束后回归到LTE网络的过程中。
Description
一种选择长期演进 LTE网络的方法及设备
技术领域
本发明涉及通信技术领域, 尤其涉及一种在电路域回落 ( Circuit Switched Fallback , CSFB ) 业务结束后选择长期演进 ( Long Term Evolution , LTE ) 网络的方法及设备。 背景技术
电路域 (Circuit Service , CS ) 网络是提供语音呼叫等电路域服务的 无线网络, 例如 GSM、 WCDMA 等第二代 /第三代 (2nd Generation/3rd Generation , 2G/3G ) 网络的覆盖非常普遍。 与此同时, 随着网络技术的 发展, 专门提供数据服务的分组域 ( Packet Service , PS ) 网络, 例如长 期演进 ( Long Term Evolution, LTE ) 网络也正在大规模部署中。 因此, 在目前的通信网络中 CS域网络和 PS域网络并存, 运营商可以用 2G/3G 网络来为用户提供电路域服务, 用 LTE网络为用户提供数据服务。
基于这种网络覆盖方式, 第三代合作伙伴项目 ( 3rd Generation
Partnership Project , 3GPP )组织提出了 "电路域回落" ( CS Fallback, CSFB ) 技术, 使得注册到 LTE网络的用户设备 ( User Equipment, UE )在需要处 理 CS语音业务时回到 2G/3G网络 CS域完成业务处理。 在 CS语音呼叫 完成后, 现有协议还定义了 CSFB 回归机制, 以确保 UE能够在完成 CS 语音呼叫后回到 PS域网络进行 PS业务,具体包括:移动交换中心( Mobile Switching Centre , MSC ) /拜访位置寄存器 ( Visitors Location Register,
VLR )释放 CS语音呼叫所建立的连接,并指示给基站当前连接是因 CSFB 所建立的, 然后基站在释放连接时, 指示 UE重选回 LTE网络的 LTE频 段 (Frequency ) 信息, 使得 UE重定向到该 LTE频段信息上的合适小区 后, 随机选择该合适小区广播信息中的一个可用 LTE公共陆地移动网络 ( Public Land Mobile Network, PLMN )。
在实现上述回归 LTE 网络的过程中, 发明人发现现有技术中至少存 在如下问题: 由于 CS域语音业务完成后, UE可能处于多个不同 PLMN 的 LTE网络覆盖中, 例如发起 CSFB时 UE注册的 LTE PLMN, 以及当前 CS服务 PLMN的 LTE网络对于 UE均可用。 典型地, 若 UE在 CS域语 音业务完成后进入一个共享的 LTE小区, 则在该 LTE小区 UE可以获取 多个可用的 LTE PLMN。 在有多个 LTE PLMN可用的场景下, 现有技术 不能保证 UE选择之前发起 CSFB业务时所注册的 LTE PLMN, 若 UE重 选到其他 PLMN 的 LTE 网络, 则在 CSFB 业务触发之前所注册的 LTE PLMN中挂起的数据业务就无法恢复, 造成正在进行的数据业务被终止, 同时造成不必要的 PLMN网间切换, 影响用户的业务体验。
发明内容
本发明的实施例提供一种选择 LTE 网络的方法及设备, 使得 UE在 CSFB业务结束后可以回到发起 CSFB 时所注册的 LTE PLMN, 保证 PS 业务的连续性, 避免不必要的 PLMN网间切换, 提升用户体验。
为达到上述目的, 本发明的实施例采用如下技术方案:
本发明的第一方面, 提供一种选择长期演进 LTE网络的方法, 包括: 用户设备 UE在 LTE公共陆地移动网络 PLMN联合注册;
所述 UE发起电路域回落 CSFB业务回落到 2G/3G网络; 所述 UE在所述 2G/3G网络接收等价 PLMN列表;
所述 UE将所述 LTE PLMN的标识信息加入到所述等价 PLMN列表; 在所述 CSFB 业务结束后, 所述 UE根据所述等价 PLMN列表进行 PLMN选择。
结合本发明的第一方面, 在一种可能的实现方式中, 所述根据所述等 价 PLMN列表进行 PLMN选择, 包括:
根据所述等价 PLMN列表优先选择所述 LTE PLMN。
结合本发明的第一方面和上述可能的实现方式,在另一种可能的实现 方式中, 所述优先选择所述 LTE PLMN, 包括:
根据所述等价 PLMN列表,在 LTE频段信息对应的频段上选择小区; 从所述小区的可用 PLMN中优先选择所述 LTE PLMN;
其中, 所述 LTE频段信息为所述 UE在向所述 LTE PLMN发起联合 注册时所选择的 LTE频段的信息。
结合本发明的第一方面和上述可能的实现方式,在另一种可能的实现 方式中, 所述优先选择所述 LTE PLMN, 包括:
根据所述等价 PLMN列表,在 LTE频段信息对应的频段上选择小区, 从所述小区的可用 PLMN中优先选择所述 LTE PLMN;
其中, 所述 LTE频段信息为所述 UE从所述 2G/3G网络接收的。 本发明的第二方面, 提供一种选择长期演进 LTE网络的方法, 包括: 用户设备 UE在 LTE公共陆地移动网络 PLMN联合注册;
在电路域回落 CSFB业务结束后,所述 UE在 LTE频段信息对应的频 段上进行 PLMN选择, 其中, 所述 LTE频段信息为所述 UE向所述 LTE
PLMN发起联合注册时所选择的 LTE频段的信息。
结合本发明的第二方面, 在一种可能的实现方式中, 所述 UE在所述 LTE频段信息对应的频段上进行 PLMN选择, 包括:
所述 UE在所述 LTE频段信息对应的频段上选择小区,从所述小区的 可用 PLMN中优先选择所述 LTE PLMN。
结合本发明的第二方面和上述可能的实现方式,在另一种可能的实现 方式中, 所述方法还包括:
所述 UE发起所述 CSFB业务回落到电路域时,保存所述 LTE频段信 息。
本发明的第三方面, 提供一种选择长期演进 LTE网络的方法, 包括:
2G/3G基站接收服务移动交换中心 /拜访位置寄存器 MSC/VLR发送 的连接释放消息,其中,所述连接释放消息中包含用户设备 UE发起 CSFB 业务时所注册的 LTE公共陆地移动网络 PLMN的标识信息, 所述 2G/3G 基站是为所述 CSFB业务提供服务的基站;
所述 2G/3G基站根据所述 LTE PLMN的标识信息, 选择目标频段信 息, 向所述 UE发送所述目标频段信息, 所述目标频段信息用于指示所述 UE在所述目标频段信息对应的频段上选择小区驻留。
结合本发明的第三方面, 在一种可能的实现方式中, 所述向所述 UE 发送所述目标频段信息, 包括:
向所述 UE发送优先级信息, 所述优先级信息包含所述频段信息。 本发明的第四方面, 提供一种选择长期演进 LTE网络的方法, 包括: LTE基站接收所述 UE在电路域回落 CSFB业务结束后发送的连接建 立请求消息, 其中, 所述连接建立请求消息中包含所述 UE的标识;
根据所述 UE的标识和所述 UE发起所述 CSFB业务时注册的 LTE公 共陆地移动网络 PLMN的标识信息, 所述 LTE基站选择所述 LTE PLMN 的标识信息对应的所述 LTE PLMN。
结合本发明的第四方面,在一种可能的实现方式中,所述方法还包括: 所述 LTE基站接收并保存 2G/3G基站发送的所述 UE的标识与所述
LTE PLMN的标识信息, 其中, 所述 2G/3G基站是为所述 CSFB业务提供 服务的基站。
结合本发明的第四方面和上述可能的实现方式,在另一种可能的实现 方式中, 在所述 LTE基站接收 2G/3G基站发送的所述 UE的标识与所述 LTE PLMN的标识信息之前, 所述方法还包括:
所述 2G/3G基站接收服务移动交换中心 /拜访位置寄存器 MSC/VLR 发送的连接释放消息, 其中, 所述连接释放消息中包含所述 UE的标识与 所述 LTE PLMN的标识信息;
所述 2G/3G基站向 LTE基站发送所述 UE的标识与所述 LTE PLMN 的标识信息。
结合本发明的第四方面和上述可能的实现方式,在另一种可能的实现 方式中, 当所述服务 MSC/VLR是所述 UE的注册 MSC/VLR时, 所述 UE 的标识和所述 LTE PLMN的标识信息是所述服务 MSC/VLR从所述 UE的 注册信息中获取的; 或者,
当所述服务 MSC/VLR不是所述 UE的注册 MSC/VLR时, 所述 UE 的标识和所述 LTE PLMN的标识信息是所述服务 MSC/VLR从所述 UE的 注册 MSC/VLR获取的。
结合本发明的第四方面和上述可能的实现方式,在另一种可能的实现
方式中,所述 LTE基站为所述 UE发起所述 CSFB业务时提供接入服务的 基站;
所述方法还包括:
在所述 UE在所述 LTE PLMN发起 CSFB业务时, 所述 LTE基站保 存所述 UE的标识与所述 LTE PLMN的标识信息。
结合本发明的第四方面和上述可能的实现方式,在另一种可能的实现 方式中, 所述方法还包括:
所述 LTE基站删除保存的所述 UE的标识以及所述 LTE PLMN的标 识信息。
本发明的第五方面, 提供一种 UE, 包括:
接收器, 用于在所述 UE在长期演进 LTE公共陆地移动网络 PLMN 联合注册, 发起电路域回落 CSFB业务回落到第二代 /第三代 2G/3G网络 后, 从所述 2G/3G网络接收等价 PLMN列表;
处理器, 用于将所述 LTE PLMN的标识信息加入到所述接收器接收 的所述等价 PLMN列表; 在所述 CSFB业务结束后,根据所述等价 PLMN 列表进行 PLMN选择。
结合本发明的第五方面,在一种可能的实现方式中,所述处理器用于: 根据所述等价 PLMN列表优先选择所述 LTE PLMN。
结合本发明的第五方面和上述可能的实现方式,在另一种可能的实现 方式中, 所述处理器用于:
根据所述等价 PLMN列表,在 LTE频段信息对应的频段上选择小区, 从所述小区的可用 PLMN中优先选择所述 LTE PLMN;
其中, 所述 LTE频段信息为所述 UE在向所述 LTE PLMN发起联合
注册时所选择的 LTE频段的信息。
结合本发明的第五方面和上述可能的实现方式,在另一种可能的实现 方式中, 所述处理器用于:
根据所述等价 PLMN列表,在 LTE频段信息对应的频段上选择小区, 从所述小区的可用 PLMN中优先选择所述 LTE PLMN;
其中, 所述 LTE频段信息为所述 UE从所述 2G/3G网络接收的。 本发明的第六方面, 提供一种 UE, 包括:
收发器, 用于与网络设备之间进行交互以在 LTE公共陆地移动网络 PLMN联合注册;
处理器, 用于在电路域回落 CSFB 业务结束后, 在 LTE频段信息对 应的频段上进行 PLMN选择, 其中, 所述 LTE频段信息为所述 UE向所 述 LTE PLMN发起联合注册时所选择的 LTE频段的信息。
结合本发明的第六方面,在一种可能的实现方式中,所述处理器用于: 在所述 LTE 频段信息对应的频段上选择小区, 从所述小区的可用 PLMN中优先选择所述 LTE PLMNo
结合本发明的第六方面和上述可能的实现方式,在另一种可能的实现 方式中, 该 UE还包括:
存储器, 在所述发射器发起所述 CSFB业务以回落到电路域时, 保存 所述 LTE频段信息;
所述处理器, 还用于在电路域回落 CSFB业务结束后, 从所述存储器 中获取所述 LTE频段信息。
本发明的第七方面, 提供一种 2G/3G基站, 用于为电路域回落 CSFB 业务提供服务, 该 2G/3G基站包括:
接收器, 用于接收服务移动交换中心 /拜访位置寄存器 MSC/VLR 发 送的连接释放消息, 其中, 所述连接释放消息中包含用户设备 UE 发起 CSFB业务时所注册的 LTE公共陆地移动网络 PLMN的标识信息, 所述 2G/3G基站是为所述 CSFB业务提供服务的基站;
处理器, 用于根据所述接收器接收的 LTE PLMN的标识信息, 选择 目标频段信息;
发射器, 用于向所述 UE发送所述处理器选择的目标频段信息, 所述 目标频段信息用于指示所述 UE在所述目标频段信息对应的频段上选择小 区驻留。
结合本发明的第七方面,在一种可能的实现方式中,所述发射器用于: 向所述 UE发送优先级信息, 所述优先级信息包含所述频段信息。 本发明的第八方面, 提供一种 LTE基站, 包括:
接收器, 用于接收所述 UE在电路域回落 CSFB业务结束后发送的连 接建立请求消息, 其中, 所述连接建立请求消息中包含所述 UE的标识; 处理器, 用于根据所述 UE的标识和所述 UE发起所述 CSFB业务时 注册的 LTE公共陆地移动网络 PLMN的标识信息, 选择所述 LTE PLMN 的标识信息对应的所述 LTE PLMN。
结合本发明的第八方面, 在一种可能的实现方式中, 该 LTE基站还 包括: 存储器;
所述接收器, 还用于接收第二代 /第三代 2G/3G基站发送的所述 UE 的标识与所述 LTE PLMN的标识信息, 其中, 所述 2G/3G基站是为所述 CSFB业务提供服务的基站;
所述存储器, 用于保存所述接收器接收的 2G/3G基站发送的所述 UE
的标识与所述 LTE PLMN的标识信息, 其中, 所述 2G/3G基站是为所述 CSFB业务提供服务的基站。
结合本发明的第八方面和上述可能的实现方式,在另一种可能的实现 方式中, 该 LTE基站还包括: 发射器;
所述接收器, 还用于接收所述 2G/3G基站接收服务移动交换中心 /拜 访位置寄存器 MSC/VLR发送的连接释放消息, 其中, 所述连接释放消息 中包含所述 UE的标识与所述 LTE PLMN的标识信息;
所述发射器, 还用于向 LTE 基站发送所述 UE 的标识与所述 LTE PLMN的标识信息。
结合本发明的第八方面和上述可能的实现方式,在另一种可能的实现 方式中, 当所述服务 MSC/VLR是所述 UE的注册 MSC/VLR时, 所述 UE 的标识和所述 LTE PLMN的标识信息是所述服务 MSC/VLR从所述 UE的 注册信息中获取的; 或者,
当所述服务 MSC/VLR不是所述 UE的注册 MSC/VLR时, 所述 UE 的标识和所述 LTE PLMN的标识信息是所述服务 MSC/VLR从所述 UE的 注册 MSC/VLR获取的。
结合本发明的第八方面和上述可能的实现方式,在另一种可能的实现 方式中,所述 LTE基站为所述 UE发起所述 CSFB业务时提供接入服务的 基站; 所述 LTE基站还包括:
存储器, 用于在所述 UE在所述 LTE PLMN发起 CSFB业务时, 保存 所述 UE的标识与所述 LTE PLMN的标识信息。
结合本发明的第八方面和上述可能的实现方式,在另一种可能的实现 方式中, 所述处理器还用于: 删除保存的所述 UE 的标识以及所述 LTE
PLMN的标识信息。
本发明的第九方面, 提供一种 UE, 包括:
注册单元, 用于在 LTE公共陆地移动网络 PLMN联合注册; 回落单元, 用于发起电路域回落 CSFB业务回落到 2G/3G网络, 接收单元, 用于在所述 2G/3G网络接收等价 PLMN列表;
加入单元, 用于将 LTE PLMN的标识信息加入到所述接收单元接收 的所述等价 PLMN列表;
选择单元, 用于在所述 CSFB业务结束后, 根据被所述加入单元修改 后的等价 PLMN列表进行 PLMN选择。
结合本发明的第九方面, 在一种可能的实现方式中, 所述选择单元用 于:
根据被所述加入单元修改后的等价 PLMN 列表优先选择所述 LTE PLMN。
结合本发明的第九方面和上述可能的实现方式,在另一种可能的实现 方式中, 所述选择单元具体用于:
根据被所述加入单元修改后的等价 PLMN列表, 在 LTE频段信息对 应的频段上选择小区;
从所述小区的可用 PLMN中优先选择所述 LTE PLMN;
其中, 所述 LTE频段信息为所述 UE在向所述 LTE PLMN发起联合 注册时所选择的 LTE频段的信息。
结合本发明的第九方面和上述可能的实现方式,在另一种可能的实现 方式中, 所述选择单元具体用于:
根据被所述加入单元修改后的等价 PLMN列表, 在 LTE频段信息对
应的频段上选择小区,
从所述小区的可用 PLMN中优先选择所述 LTE PLMN;
其中, 所述 LTE频段信息为所述 UE从所述 2G/3G网络接收的。 本发明的第十方面, 提供一种 UE, 包括:
注册单元, 用于在 LTE公共陆地移动网络 PLMN联合注册; 选择单元, 用于在电路域回落 CSFB业务结束后, 在 LTE频段信息 对应的频段上进行 PLMN选择, 其中, 所述 LTE频段信息为所述 UE向 所述 LTE PLMN发起联合注册时所选择的 LTE频段的信息。
结合本发明的第十方面, 在一种可能的实现方式中, 所述选择单元用 于:
在所述 LTE 频段信息对应的频段上选择小区, 从所述小区的可用 PLMN中优先选择所述 LTE PLMNo
结合本发明的第十方面和上述可能的实现方式,在另一种可能的实现 方式中, 该 UE还包括:
保存单元, 用于在发起所述 CSFB 业务回落到电路域时, 保存所述 LTE频段信息;
所述选择单元, 还用于在电路域回落 CSFB业务结束后, 从所述保存 单元获取所述 LTE频段信息。
本发明的第十一方面,提供一种 2G/3G基站,用于为电路域回落 CSFB 业务提供服务, 该 2G/3G基站包括:
接收单元, 用于接收服务移动交换中心 /拜访位置寄存器 MSC/VLR 发送的连接释放消息, 其中, 所述连接释放消息中包含用户设备 UE发起 CSFB业务时所注册的 LTE公共陆地移动网络 PLMN的标识信息, 所述
2G/3G基站是为所述 CSFB业务提供服务的基站;
选择单元, 用于根据所述接收单元接收的 LTE PLMN的标识信息, 选择目标频段信息;
发送单元, 用于向所述 UE发送所述选择单元选择的目标频段信息, 所述目标频段信息用于指示所述 UE在所述目标频段信息对应的频段上选 择小区驻留。
结合本发明的第十一方面, 在一种可能的实现方式中, 所述发送单元 用于:
向所述 UE发送优先级信息, 所述优先级信息包含所述频段信息。 本发明的第十二方面, 提供一种 LTE基站, 包括:
接收单元, 用于接收所述 UE在电路域回落 CSFB业务结束后发送的 连接建立请求消息,其中,所述连接建立请求消息中包含所述 UE的标识; 选择单元, 用于根据所述接收单元接收的 UE的标识和所述 UE发起 所述 CSFB业务时注册的 LTE公共陆地移动网络 PLMN的标识信息, 选 择所述 LTE PLMN的标识信息对应的所述 LTE PLMN。
结合本发明的第十二方面, 在一种可能的实现方式中, 所述接收单元 用于:
接收并保存 2G/3G基站发送的所述 UE的标识与所述 LTE PLMN的 标识信息, 其中, 所述 2G/3G基站是为所述 CSFB业务提供服务的基站。
结合本发明的第十二方面和上述可能的实现方式,在另一种可能的实 现方式中, 所述接收单元用于:
在接收 2G/3G基站发送的所述 UE的标识与所述 LTE PLMN的标识 信息之前, 所述 2G/3G 基站接收服务移动交换中心 /拜访位置寄存器
MSC/VLR发送的连接释放消息, 其中, 所述连接释放消息中包含所述 UE 的标识与所述 LTE PLMN的标识信息; 所述 2G/3G基站向 LTE基站发送 所述 UE的标识与所述 LTE PLMN的标识信息。
结合本发明的第十二方面和上述可能的实现方式,在另一种可能的实 现方式中, 当所述服务 MSC/VLR是所述 UE的注册 MSC/VLR时, 所述 UE的标识和所述 LTE PLMN的标识信息是所述服务 MSC/VLR从所述 UE 的注册信息中获取的; 或者,
当所述服务 MSC/VLR不是所述 UE的注册 MSC/VLR时, 所述 UE 的标识和所述 LTE PLMN的标识信息是所述服务 MSC/VLR从所述 UE的 注册 MSC/VLR获取的。
结合本发明的第十二方面和上述可能的实现方式,在另一种可能的实 现方式中,所述 LTE基站为所述 UE发起所述 CSFB业务时提供接入服务 的基站; 所述 LTE基站还包括:
保存单元, 用于在所述 UE在所述 LTE PLMN发起 CSFB业务时, 所 述 LTE基站保存所述 UE的标识与所述 LTE PLMN的标识信息。
结合本发明的第十二方面和上述可能的实现方式,在另一种可能的实 现方式中, 该 LTE基站还包括:
删除单元,用于删除保存的所述 UE的标识以及所述 LTE PLMN的标 识信息。
本发明实施例提供的选择 LTE网络的方法及设备, 当 UE在 CSFB业 务结束后发起到 LTE网络的连接建立请求消息时, 根据 UE发送的 UE标 识和已保存的 UE 的标识匹配, 确定 UE 在发起 CSFB 时注册的 LTE PLMN,与现有技术中随机令 UE回到相邻的任一 LTE PLMN的 LTE网络
相比, 可以指定 UE回到发起 CSFB时所注册的 LTE PLMN , 既减少不必 要的 PLMN网间切换, 又可以恢复在之前注册的 LTE PLMN中被挂起的 数据业务, 提高用户体验。 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筒单地介绍, 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。
1为本发明一实施例中的一种选择 LTE网络的方法流程图; 图 2为本发明另一 -实施例中的一 -种选择 LTE网络的方法流程图; 图 3为本发明另一 -实施例中的一 -种选择 LTE网络的方法流程图; 图 4为本发明另一 -实施例中的一 -种选择 LTE网络的方法流程图; 图 5为本发明另一 -实施例中的一 -种选择 LTE网络的方法流程图; 图 6为本发明另一 -实施例中的一 -种选择 LTE网络的方法流程图; 图 7为本发明另一 -实施例中的一 -种 UE组成示意图;
图 8为本发明另一 -实施例中的一 -种 UE组成示意图;
图 9为本发明另一 -实施例中的一 -种 2G/3G基站组成示意图;
图 10为本发明另-一实施例中的-一种 LTE基站组成示意图;
图 11为本发明另-一实施例中的-一种 UE组成示意图;
图 12为本发明另-一实施例中的-一种 UE组成示意图;
图 13为本发明另-一实施例中的-一种 2G/3G基站组成示意图;
14为本发明另-一实施例中的-一种 LTE基站组成示意图。
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。
本说明书中所描述的 LTE网络, 即为演进的 UMTS陆地无线接入网 (英文全称为 Evolved UMTS Territorial Radio Access Network, 英文筒称 为 E-UTRAN , 其中 UMTS的中文全称为通用移动通信系统, 英文全称为 Universal Mobile Telecommunications System ) , 第二代 ( 2nd Generation , 2G ) 网络即为 GSM/EDGE 无线接入网 (英文全称为 GSM/EDGE Radio Access Network, 英文筒称为 GERAN , 其中 GSM的中文全称为全球移动 通讯系统, 英文全称为 Global System of Mobile communication , EDGE的 中文全称为增强型数据速率 GSM演进技术, 英文全称为 Enhanced Data Rate for GSM Evolution ) , 第三代( 3rd Generation , 3G )网络即为 UTRAN 网络。 LTE网络的 PLMN仅提供 PS域服务, 而 2G/3G网络中既包含提供 CS域服务的 PLMN也包含提供 PS域服务的 PLMN。
在本发明实施例中, 用户设备 ( User Equipment, 筒称 UE ) 可以为 以下任意一种, 并且 UE可以是静态的, 也可以是移动的。 静止的 UE可 以包括为终端( Terminal )、移动台( Mobile Station )、用户单元( Subscriber Unit )或站台 ( Station )等。移动的 UE可以包括蜂窝电话( Cellular Phone )、 个人数字助理 ( Personal Digital Assistant , PDA )、 无线调制解调器 ( modem ), 无线通信设备、 手持设备 ( handheld )、 膝上型电脑 (Laptop
Computer )、 无绳电话( Cordless Phone )或无线本地环路 ( Wireless Local Loop , WLL ) 台等。 上述 UE可以分布于整个无线网络中。
为了便于本领域技术人员的理解, 下面以具体的应用实例来说明。 需 要说明的是, 在本发明实施例中, LTE基站可以为提供 LTE 网络接入服 务的基站, 例如 eNodeB。 第二代 /第三代 2G/3G基站可以为 2G网络中的 基站子系统 (Base Station Subsystem, BSS ), 或 3G网络中的无线网络子 系统(Radio Network Subsystem, RNS)。 移动管理网元可以为移动交换中 心 ( Mobile Switching Centre , MSC ) /拜访位置寄存器 ( Visitors Location Register, VLR ), 或移动管理实体 ( Mobility Management Entity, MME) , 或服务 GPRS支持节点 ( Serving GPRS Support Node, SGSN ) 中的任一 种, MSC与 VLR通常合设为同一网元, 称为 MSC/VLR, 或筒称为 VLR。
由于 LTE网络只支持 PS数据业务, UE在 LTE网络里进行数据业务 或者处于空闲状态时, 此时若该 UE要发起或者接收电路域业务(包括语 音呼叫、补充业务或位置服务等 ),则需要执行电路域回落( Circuit Service Fall Back, CSFB )流程将 UE从 LTE回落到 2G/3G网络,以便 UE在 2G/3G 网络中完成电路域业务。 在电路域业务结束后 (UE 在 2G/3G 网络中因 CSFB业务建立的底层链路被释放意味着电路域业务结束)终端需要回到 LTE网络, 以继续在 LTE网络进行数据业务。 本发明实施例中, CSFB业 务,具体指驻留在 LTE网络的 UE因需要执行电路域 CS业务而发起 CSFB 流程回落到 2G/3G网络后执行的 CS业务,所述 CSFB业务包括上行 CSFB 业务与下行 CSFB业务,例如 UE在 LTE网络接收到一个语音呼叫寻呼所 触发的下行 CSFB 业务或者一个主动语音呼叫所触发的上行 CSFB 业务 等。 本发明实施例中, 源 MSC/VLR为 UE在联合注册流程中成功注册的
MSC/VLR , 也即 UE 在联合注册成功后在 LTE 网络驻留时的服务 MSC/VLR, 也称为注册 MSC/VLR。 服务 MSC/VLR为 UE发起 CSFB流 程回落到 2G/3G网络后执行 CS业务所提供服务的 MSC/VLR, 也称为目 标 MSC/VLR。
在 UE内部, 按照处理和控制的消息对象不同, 可以将 UE内部分为 接入层 ( Access Stratum, AS ) 和非接入层 ( Non-Access Stratum, NAS )。 其中, AS负责接收 RR/RRC连接释放消息, 根据频段选择合适小区并驻 留, 读取小区系统广播消息, 获取可用的 PLMN信息, 然后上报给 NAS。 NAS根据 AS层上报的可用 PLMN信息, 决定是否执行 PLMN选择。 本发明的一实施例提供一种选择 LTE 网络的方法, 如图 1所示, 该 方法包括:
101、 LTE基站接收 UE在电路域回落 CSFB业务结束后发送的连接 建立请求消息, 其中, 所述连接建立请求消息中包含所述 UE的标识。
可选的, LTE基站为 UE提供 LTE接入服务, 在 UE发起 CSFB时注 册到 LTE基站, 当 UE发起 CSFB时, LTE基站可以保存所述 UE的标识 与所述 UE所注册的 LTE PLMN的标识信息, 以便在 UE的 CSFB业务结 束之后, 在接收到 UE发送的包含该 UE标识的连接建立请求消息时, 根 据 UE 的标识以及已保存的所述 UE 发起 CSFB 业务时所注册的 LTE PLMN的标识信息, 为 UE选择发起 CSFB时所注册的 LTE PLMN。
可选地, 在 UE发起的 CSFB业务结束后,服务 MSC/VLR可以将 UE 的标识以及 UE注册的 LTE PLMN的标识信息发送给为 UE提供 CS域接 入服务的 2G/3G基站,使得 2G/3G基站将 UE的标识以及 UE注册的 LTE
PLMN 的标识信息发送给相邻的且可以为 UE在 CSFB 业务结束后提供 LTE接入服务的 LTE基站,这些相邻基站中包括 UE发起 CSFB时注册的 LTE基站。 LTE基站保存所述 2G/3G基站发送的 UE的标识以及 UE注册 的 LTE PLMN的标识信息, 这样当 LTE基站接收到 UE发送的包含该 UE 标识的连接建立请求消息后, 便可以根据 UE的标识以及保存的 UE注册 的 LTE PLMN的标识信息为所述 UE选择发起 CSFB业务时所注册的 LTE PLMN。 其中, 2G/3G基站可以预先获知与所述 2G/3G基站相邻的可以提 供 LTE接入服务的基站, 例如, 基于网络配置或利用自动邻区关系获知 其相邻的 eNodeB , 可以将 UE的标识以及所述 LTE PLMN的标识信息发 送给每个相邻的提供 LTE接入服务的基站。 因为 UE是在 LTE基站中进 行 LTE业务时发起 CSFB 的, 会就近选择到附近的能提供 CS域服务的 2G/3G基站, 因此 UE之前注册的 LTE基站和进行 CSFB业务的 2G/3G 基站是相邻的。 LTE基站接收 2G/3G基站发送的 UE的标识以及所述 LTE PLMN的标识信息并保存, 这样, 当 UE搜索合适小区以回归 LTE网络时 若进入 LTE基站服务区, 则 LTE基站可以确定并选择该 UE发起 CSFB 业务时 LTE PLMN的标识信息。
需要说明的是, 若所述服务 MSC/VLR是所述 UE的注册 MSC/VLR, 则所述良务 MSC/VLR从所述 UE的注册信息中获取所述 UE的标识与所 述 UELTE PLMN的标识信息。 若所述服务 MSC/VLR不是所述 UE的注 册 MSC/VLR,则所述服务 MSC/VLR从所述 UE的注册 MSC/VLR中获取 所述 UE的标识与所述 UELTE PLMN的标识信息。
其中, 所述 UE 的标识可以为系统架构演进 ( System Architecture Evolution, SAE ) 临时移动用户标识 ( SAE Temporary Mobile Subscriber
Identity , S-TMSI )、 国际移动用户标识 ( International Mobile Subscriber Identity , IMSI ) 或者临时移动用户标识 ( Temporary Mobile Subscriber Identity, TMSI ), 本发明实施例对此不 #文限定。 所述 UE 所注册的 LTE PLMN的标识信息, 可以为注册 LTE PLMN标识( identity, ID ), 还可以 为包含注册 LTE PLMN ID 的全局唯一临时标识 ( Globally Unique Temporary Identity, GUTI ), 还可以为包含注册 LTE PLMN ID的跟踪域 标识( Tracking Area Identity, TAI ), 还可以为包含注册 LTE PLMN ID的 E-UTRAN 小区全局标识符(E-UTRAN Cell Global Identity, ECGI) , 本发 明实施例对此不做限定。
其中, 所述连接建立请求消息是由 UE在发起的电路域回落 CSFB业 务结束后发送的, LTE 基站是可以提供 LTE 接入服务的基站, 例如 eNodeB。 LTE基站可以由至少两个 LTE PLMN共享, 即 LTE基站可以为 至少两个 PLMN提供 LTE接入服务, 例如 LTE基站既可以为 PLMN1提 供 LTE接入服务, 又可以为 PLMN2提供 LTE接入服务。
102、 根据所述 UE的标识和所述 UE发起所述 CSFB业务时注册的
LTE公共陆地移动网络 PLMN的标识信息, 所述 LTE基站选择所述 LTE PLMN的标识信息对应的所述 LTE PLMN。
其中, 由于 LTE基站可以获知所述 UE的标识和所述 LTE PLMN的 标识信息, 因此可以根据接收到的 UE发送的 UE标识与已保存的 UE标 识进行匹配, 确定该 UE标识对应的 LTE PLMN的标识信息。 LTE基站通 过该 LTE PLMN 的标识信息可以唯一确定对应的 LTE PLMN 并选择该 LTE PLMN为 UE提供 LTE服务。
本发明实施例提供的选择 LTE网络的方法, 当 UE在 CSFB业务结束
后发起到 LTE网络的连接建立请求时,根据 UE发送的 UE标识和已保存 的 UE的标识匹配, 确定并选择 UE发起 CSFB时注册的 LTE PLMN , 与 现有技术定义的 CSFB后回归 LTE网络的方法相比,可以确保 UE回到发 起 CSFB时所注册的 LTE PLMN , 既减少不必要的 PLMN网间切换, 又可 以恢复在之前注册的 LTE PLMN 中被挂起的数据业务, 提高业务效率, 提升用户体验。 本发明另一实施例提供一种选择 LTE 网络的方法, 如图 2所示, 该 方法包括:
201、 UE发起联合注册并成功注册到支持 LTE网络的 PLMN1与支持 2G/3G网络的 PLMN2。
其中, 驻留在 E-UTRAN且支持 CSFB的 UE需要发起联合注册流程 实现到 EPC网络 PS域与 2G/3G网络 CS域的同时注册。在 UE注册到 PS 域网络 ( LTE PLMN1 ) 时, PLMN2中的源 MSC/VLR可以获取 UE的标 识与 PLMN1的 PLMN ID 1。
在联合注册流程中, 网络侧为 UE选取源 MSC/VLR: UE注册到 CS 域网络 ( CS PLMN2 ) 时, 移动管理实体 ( Mobile Management Entity, MME ) 选择一个可以为 UE 提供服务的源 MSC/VLR 并向所选的源 MSC/VLR发送位置更新请求以建立 SGs关联。 源 MSC/VLR向归属位置 寄存器 (Home Location Register, HLR ) 发送注册请求并获取 UE的 CS 域签约数据,实现 UE在 CS域的注册。可选的,在未部署 MSC资源池( MSC pool ) 的场景下, MME 根据 UE 当前所在位置信息选择一个可服务的 MSC/VLR; 在部署了 MSC资源池(MSC pool )的场景下, MME根据 UE
当前所在位置信息与国际移动用户标识 ( International Mobile Subscriber Identity, IMSI ) 哈希表从 MSC pool里选择一个服务 MSC/VLR。
202、 UE在 PLMN1发起 CSFB , 并成功回落到 PLMN2的 2G/3G网 络。
其中, 在成功实现联合注册后, CSFB业务才能正常发起。 在 UE发 起上下行 CSFB流程中, LTE网络中的 MME为 UE选择一个 CS服务 PLMN ID并将选择的 CS服务 PLMN ID发给 LTE网络中的 LTE基站( eNodeB ), 旨在告知 LTE基站 ( eNodeB )应该将 UE回落到 CS PLMN ID对应的 CS 域网络中。 UE切换到 2G/3G网络后, 便可发起 CS域业务。 例如 UE在 发起的 CS语音呼叫建立流程中, 可以发送 CSFB指示给服务 MSC/VLR, 所述 CSFB指示用于指示本次语音呼叫是因在 LTE网络中执行 CSFB所触 发的。 CS语音呼叫连接建立成功后, UE进行语音呼叫。
203、 源 MSC/VLR向服务 MSC/VLR发送 UE的标识与 PLMN ID1。 其中, 步骤 203 为可选步骤, 如果 UE 回落到 2G/3G 网络的服务 MSC/VLR是所述源 MSC/VLR, 则不用执行步骤 203。 仅当 UE 的服务 MSC/VLR不是步骤 201 中所注册的源 MSC/VLR时执行步骤 203。
其中, 在步骤 201的联合注册过程中, 源 MSC/VLR可以从注册信息 中获取 UE的标识, 例如, 在联合注册过程中, MME会将 UE的国际移 动用户标识 IMSI发送给源 MSC/VLR, 或者, MME还可以将 UE的 SAE 临时移动用户标识 S-TMSI发送给源 MSC/VLR。 进一步地, 源 MSC/VLR 可以从注册信息中获取 UE注册的 PLMN ID 1。例如, 在联合注册过程中, MME会将其 MME名称( name )发送给源 MSC/VLR, 在 MME名称中包 含有 UE注册的 PLMN ID1。 或者, 在联合注册流程中, MME可以向源
MSC/VLR发送 3艮踪域标识( Tracking Area Identity, TAI )或 E-UTRAN 小 区全局标识符(E-UTRAN Cell Global Identity, ECGI) , 在 TAI或 ECGI中 均包含 UE注册的 PLMN ID1。
在本实施例中,如果 UE回落到 2G/3G网络后进入另一个 MSC/VLR, 即服务 MSC/VLR的服务范围内, 则 UE在与服务 MSC/VLR的位置更新 过程中会将源 MSC/VLR的位置信息上报给服务 MSC/VLR。 然后, 服务 MSC/VLR 根据 UE 上报的位置信息向源 MSC/VLR 发送移动应用部分 ( Mobile Application Part , MAP ) 协议发送身份请求消息 ( SEND IDENTIFICATION ) , 请求获取 UE 的标识与注册的 PLMN ID1 , 源 MSC/VLR在 MAP协议发送身份响应消息中,向服务 MSC/VLR发送在步 骤 201 中获取到的 UE的标识与注册的 PLMN ID1。
204、 UE在 PLMN2进行 CS域业务。
其中, CSFB后进行的 CS域业务可以包括发起或接收语音呼叫、 补 充业务或位置服务等。
205、 当 UE的 CS域业务结束后, 服务 MSC/VLR向 2G/3G基站发送 第一连接释放消息, 在所述第一连接释放消息中包含 CSFB指示、 UE标 识以及 PLMN ID1 , 即 2G/3G基站获知 UE的 CSFB业务结束。
其中, 在 UE的 CS域业务结束后, 服务 MSC/VLR向基站发起连接 释放流程, 在第一连接释放消息中携带 CSFB指示、 UE标识以及 PLMN ID1。所述 CSFB指示用于指示当前 UE的 CS域业务是由于 CSFB引起的, 在所述 CS域业务结束后, 需要将该 UE重定向回到 LTE网络。
其中,服务 MSC/VLR发送给 2G/3G基站的 UE标识可以为 UE的 SAE 临时移动用户标识 S-TMSI、 国际移动用户标识 IMSI或者临时移动用户
标识 ( Temporary Mobile Subscriber Identity, TMSI ), 本发明实施例对此 不做限定。 服务 MSC/VLR发送给 2G/3G基站的注册的 LTE PLMN的标 识信息, 可以为注册 LTE PLMN标识( identity , ID ), 还可以为包含注册 LTE PLMN ID的全局唯一临时标识 ( Globally Unique Temporary Identity, GUTI ), 还可以为包含注册 LTE PLMN ID的跟踪域标识 ( Tracking Area Identity, TAI ), 还可以为包含注册 LTE PLMN ID的 E-UTRAN 小区全局 标识符(E-UTRAN Cell Global Identity , ECGI)。 在本实施例中仅以 PLMN ID 1 为注册的 LTE PLMN的标识信息作为举例, 其他形式的注册的 LTE PLMN的标识信息本发明实施例不做详细赘述。
206、 2G/3G基站将 UE标识以及 PLMN ID1发送给相邻的提供 LTE 接入服务的基站, 其中相邻的提供 LTE接入服务的基站中包括 UE发起 CSFB时为 UE提供 LTE接入服务的 LTE基站。
例如, 2G/3G 基站可以通过无线接入网信息管理流程 ( RAN Information Management, RIM )将获取的 UE标识与注册的 LTE PLMN ID1 发给邻近的提供 LTE接入服务的基站。 其中, LTE基站将接收到的 UE标 识以及 PLMN ID1进行保存。 2G/3G基站可以通过网络管理系统的配置获 知相邻的提供 LTE接入服务的基站, 也可以通过自动邻区发现流程发现 相邻的提供 LTE接入服务的基站。
进一步的, 为了避免占用过多的 LTE基站的存储资源, 可以不永久 保存所述 UE的标识以及 UE注册的 LTE PLMN的标识信息。可选的, LTE 基站获知 UE发起 CSFB流程后,可以启动一个计时器, 当该计时器超时, 则删除保存的所述 UE的标识以及 UE注册的 LTE PLMN ID 1 , 其中计时 器的时间可以根据 LTE 基站的存储空间大小, 业务繁忙程度, 以及 UE
的优先级等因素预先设定, 本发明不做限定。 或者, 也可以采用其他触发 条件删除已保存的所述 UE的标识以及 UE注册的 LTE PLMN ID 1 ,例如, 当已保存的 UE的标识以及 UE注册的 LTE PLMN的标识信息达到一定容 量, 或达到一定数量, 则删除最早保存的 UE的标识以及 UE注册的 LTE PLMN的标识信息,直到已保存的 UE标识及 LTE PLMN的标识信息低于 或等于保存的预设容量或数量。
207、 2G/3G基站根据 CSFB指示选择 LTE频段 (Frequency ) 信息。 其中, 2G/3G基站在接收到第一连接释放消息后为 UE选择 LTE频段, 属于现有技术, 所确定的 LTE频段信息可以是注册 LTE PLMN所支持的 LTE频段信息, 或者可以是 PLMN2对应的 LTE频段信息, 也可以是其它 PLMN所支持的 LTE频段信息, 本发明实施例这里不做详细介绍。
208、 2G/3G基站向 UE发送第二连接释放消息, 其中所述第二连接 释放消息中包含步骤 207所选择的 LTE频段信息。
本申请说明书中提及的第一连接释放消息和第二连接释放消息,可以 为无线资源 (Radio Resource, RR ) 连接释放 (release)消息, 或者无线资 源控制 ( Radio Resource Control, RRC ) 连接释放消息, 或者其他用于辅 助无线资源释放的消息。 其中, 如果所述 2G/3G基站是 BSS , BSS向 UE 发送 RR连接释放消息, 在 RR连接释放消息中包含重定向指示, 用于指 示 UE释放 RR连接后重定向回归到 LTE网络;并且以 LTE频段信息作为 所述重定向指示的内容,用于指示 UE重定向回归到 LTE频段对应的 LTE 网络。如果所述基站是 RNS , RNS向 UE发送 RRC连接释放消息,在 RRC 连接释放消息中包含重定向指示, 用于指示 UE释放 RRC连接后重定向 回归到 LTE网络; 并且以 LTE频段信息作为所述重定向指示的内容, 用
于指示 UE重定向回归到 LTE频段对应的 LTE网络。
209、 UE在 LTE频段上搜索合适小区 ( Suitable Cell ) 并驻留。
其中,UE在释放当前 RR/RRC连接后,根据重定向指示中指定的 LTE 频段信息, 在 LTE频段上搜索合适小区, 并驻留到 LTE频段上搜索到的 合适小区中。 所述合适小区是 UE能够驻留并能够获取正常业务的小区。 在实际应用中,可能出现 LTE频段上搜索到的小区 UE不能获取正常业务 (例如只能获取紧急业务), 即为非合适小区, 这种情况下 UE可以在全 部频段上重新搜索合适小区, 但不在本发明实施例考虑范围内, 遂不予赘 述。
需要说明的是, 该步骤中, UE可能进入当前 2G/3G基站邻近的任一 提供 LTE接入服务的基站, 包括 UE之前发起 CSFB时的 LTE基站, 为 描述方便, 此步骤以及下述步骤 210与步骤 211 中, 以 UE进入之前发起 CSFB时的 LTE基站为例。 若 UE进入其它邻近的提供 LTE接入服务的 基站, 则其执行与 LTE基站相同的动作。
210、 UE向 LTE基站发送连接建立请求消息, 其中连接建立请求消 息中包含 UE的标识。
其中, UE的标识可以为系统架构演进 ( System Architecture Evolution, SAE ) 临时移动用户标识 ( SAE Temporary Mobile Subscriber Identity , S-TMSI )、 国际移动用户标识 ( International Mobile Subscriber Identity, IMSI )或临时移动用户标识( Temporary Mobile Subscriber Identity , TMSI ), 本发明实施例对此不做限定。
需要说明的是, 该步骤中, 若 UE进入其它邻近的提供 LTE接入服务 的基站, 则 UE向该基站发送包含 UE标识的连接建立请求消息。
211、 LTE基站将连接建立请求消息中包含的 UE的标识与已保存的 UE标识匹配,确定所述 UE注册的 PLMN ID1 ;选择所述 UE注册的 PLMN ID1对应的 PLMN, 为 UE提供 LTE接入服务。
其中, 为了回归到 LTE网络进行 PS业务, UE发起联合跟踪区域更 新 ( Tracking Area Updating , TAU ) 流程, 可以在 PLMNl 中发起连接建 立流程, 恢复 PLMN1 中被挂起的数据业务。 通过步骤 206LTE基站已经 获取并保存了所述 UE的标识, 以及与所述 UE的标识对应的 UE注册的 LTE PLMN的标识信息, 因此在此步骤可以查询到 UE在发起 CSFB时所 注册的 PLMN ID1。
具体的, UE发送的连接建立请求消息中还可以包含 UE选择的 LTE PLMN的标识信息, LTE基站可以将 UE的标识与已保存的 UE标识匹配, 比较 UE选择的 LTE PLMN的标识信息与已保存的 UE注册的 LTE PLMN 的标识信息是否相同; 若两者不同, 则 LTE基站可以将连接建立请求消 息中包含的 LTE PLMN的标识信息替换成注册的 LTE PLMN的标识信息, 发送给与所述 LTE基站相连的 MME, 以完成 TAU流程。
本发明实施例提供的选择 LTE网络的方法, 当 UE发起到 LTE网络 的连接建立请求消息时, LTE基站根据 UE发送的 UE标识和已保存的 UE 的标识匹配, 确定 UE在发起 CSFB时所注册的 LTE PLMN的标识信息, 可以确保 UE 回到发起 CSFB 时所注册的 LTE PLMN, 既减少不必要的 PLMN网间切换, 又可以恢复在之前注册的 LTE PLMN中被挂起的数据 业务, 提高业务效率, 提升用户体验。 本发明另一实施例提供一种选择 LTE 网络的方法, 如图 3所示, 该
方法包括:
301、 UE发起联合注册并成功注册到支持 LTE网络的 PLMN1与支持 2G/3G网络的 PLMN2。
302、 UE在 PLMN1发起 CSFB , 并成功回落到 PLMN2的 2G/3G网 络。
其中, 与图 2所示的实施例类似, 步骤 301-302是现有技术, 本发明 实施例不详细赘述。
303、 LTE基站保存所述 UE的标识以及所述 UE注册的 LTE PLMN
ID1。
其中, LTE基站保存 UE的标识以及 UELTE PLMN的标识信息是为 了 UE CSFB业务结束后选择 LTE网络时, 为 UE选择发起 CSFB时注册 的 LTE PLMN, 为了避免占用过多的 LTE基站的存储资源, 可以不永久 保存所述 UE的标识以及 UE注册的 LTE PLMN的标识信息。可选的, LTE 基站获知 UE发起 CSFB流程后,可以启动一个计时器, 当该计时器超时, 则删除保存的所述 UE的标识以及 UE注册的 LTE PLMN ID 1 , 其中计时 器的时间可以根据 LTE 基站的存储空间大小, 业务繁忙程度, 以及 UE 的优先级等因素预先设定, 本发明不做限定。 或者, 也可以采用其他触发 条件删除已保存的所述 UE的标识以及 UE注册的 LTE PLMN ID 1 ,例如, 当已保存的 UE的标识以及 UE注册的 LTE PLMN的标识信息达到一定容 量, 或达到一定数量, 则删除最早保存的 UE的标识以及 UE注册的 LTE PLMN的标识信息,直到已保存的 UE标识及 LTE PLMN的标识信息低于 或等于保存的预设容量或数量。
304、 UE的 CSFB业务结束后, 服务 MSC/VLR向 2G/3G基站发送第
一连接释放消息, 第一连接释放消息中包含 CSFB指示。
其中, 所述 CSFB指示用于指示该 UE当前结束的 CS域业务是由于 CSFB引起的, 在 CS域业务结束后需要回归到 LTE网络。
305、 2G/3G基站向 UE发送第二连接释放消息, 在第二连接释放消 息中包含 LTE频段信息。
306、 UE在 LTE频段上搜索到 LTE基站的合适小区 ( Suitable Cell ) 并驻留。
307、 UE向 LTE基站发送连接建立请求消息, 其中连接建立请求消 息中包含 UE的标识。
在本实施例中, 步骤 304-307为现有技术, 本发明不详细赘述。
308、 LTE基站将连接建立请求消息中包含的 UE的标识与已保存的 UE标识匹配,确定所述 UE注册的 PLMN ID1 ;选择所述 UE注册的 PLMN ID1对应的 PLMN, 为 UE提供 LTE接入服务。
其中, LTE基站可以根据步骤 303中已保存的 UE标识和 UE注册的 LTE PLMN的标识信息, 以及连接建立请求消息中包含的 UE的标识, 为 UE选择注册的 PLMN ID1对应的 PLMN, 为 UE提供 LTE接入服务。 步 骤 308的具体实现方式与图 2对应的实施例中步骤 211的实现方式类似, 可以参考步骤 211 中的对应内容, 本发明实施例这里不再重复赘述。
本发明实施例提供的选择 LTE网络的方法, 当 UE的 CSFB业务结束 后, 2G/3G基站将 UE的标识和 UE注册的 LTE PLMN的标识信息发送给 LTE基站, 以便当 UE发起到 LTE网络的连接建立请求消息时, LTE基站 可以根据 UE发送的 UE标识确定 UE在发起 CSFB时所注册的 LTE PLMN 的标识信息, 可以确保 UE回到发起 CSFB时所注册的 LTE PLMN , 既减
少不必要的 PLMN 网间切换, 又可以恢复在发起 CSFB 时所注册的 LTE PLMN中被挂起的数据业务, 提高业务效率, 提升用户体验。 本发明另一实施例提供一种选择 LTE 网络的方法, 由 UE保存发起 CSFB时所注册的 LTE PLMN的标识信息,并用所保存的 LTE PLMN的标 识信息更新等价 PLMN列表, 如图 4所示, 该方法包括:
401、 用户设备 UE在 LTE公共陆地移动网络 PLMN联合注册。
其中, UE同时注册到 2G/3G网络和 LTE网络, 在 LTE网络中可以 进行数据业务, 当需要进行电路域 CS业务时可以发起 CSFB流程, 回落 到 2G/3G网络。
402、 所述 UE发起电路域回落 CSFB业务回落到 2G/3G网络。
其中, UE发起电路域回落 CSFB业务回落到 2G/3G网络时, 可以保 存所述步骤 401 中注册的 LTE PLMN的标识信息。 需要说明的是, 若在 步骤 401的注册流程中, UE已经保存了注册的 LTE PLMN的标识信息, 例如, 保存了包含注册 LTE PLMN ID的全局唯一临时标识 GUTI或者包 含注册 LTE PLMN ID的跟踪域标识 TAI, 则该步骤中 UE无需再重复保 存注册的 LTE PLMN的标识信息, 这样, 下面步骤 403与步骤 404中所 述 LTE PLMN的标识信息即为步骤 401中保存的 LTE PLMN的标识信息。
其中, 所述保存的注册的 LTE PLMN的标识信息可以为: 注册 LTE PLMN标识 ( identity, ID ), 还可以为包含注册 LTE PLMN ID的 3艮踪域 标识( Tracking Area Identity, TAI ), 还可以为包含注册 LTE PLMN ID的 全局唯一临时标识 ( Globally Unique Temporary Identity, GUTI )。
可选地, UE可以保存步骤 401 中向 LTE PLMN发起联合注册时所选
择的 LTE频段( Frequency )信息, 该 LTE频段信息所对应的 LTE频段也 是该步骤中发起 CSFB 时所选择的 LTE频段。 需要说明的是, 步骤 401 中所注册的 LTE PLMN可以支持多个 LTE频段。
403、所述 UE在所述 2G/3G网络接收等价 PLMN列表,并将所述 LTE PLMN的标识信息加入等价 PLMN列表。
其中,若 UE发起 CSFB流程后回落到 2G/3G网络一个新的位置区域 ( Location Area, LA ), 则 UE会发起到服务 MSC/VLR的 CS域位置区域 更新 (Location Area Update, LAU ) 流程, 在该位置更新流程中, 服务 MSC/VLR可以下发一个等价 PLMN列表给 UE, 以便空闲态 UE进行小 区选择 /重选与 PLMN选择。
可选地,若 UE发起 CSFB流程后回落到 2G/3G网络一个新的路由区 域( Routing Area, RA ), 则 UE会发起到 SGSN的 PS域路由域更新流程, 在该路由域更新流程中, SGSN可以下发一个等价 PLMN列表给 UE , 以 便空闲态 UE进行小区选择 /重选与 PLMN选择。
进一步地, 若 UE同时发起了 CS域位置更新流程与 PS域路由域更 新流程,则服务 MSC/VLR与 SGSN均可以下发相同的等价 PLMN列表给 UE。
UE在 2G/3G网络接收到所述等价 PLMN列表后,会保存该接收到的 等价 PLMN列表以替换之前保存的等价 PLMN列表, 进一步地, UE将步 骤 402中保存的 LTE PLMN的标识信息加入该等价 PLMN列表。 需要说 明的是, 将所述 LTE PLMN的标识信息加入该等价 PLMN列表, 一般是 将 PLMN ID加入该等价 PLMN列表, 例如, 将 GUTI中包含的 PLMN ID 加入该等价 PLMN列表。 需要说明的是, 若 UE在回落到 2G/3G网络后,
没有接收到所述等价 PLMN列表, 则 UE无需将步骤 402 中保存的 LTE PLMN 的标识信息加入已保存的等价 PLMN 列表, 因为已保存的等价 PLMN列表已经包含步骤 402中保存的 LTE PLMN的标识信息。
404、在所述 CSFB业务结束后,根据所述等价 PLMN列表进行 PLMN 选择。
其中, 通过步骤 403 已经将保存的所述 LTE PLMN的标识信息加入 到等价 PLMN列表,在进行 PLMN选择时可以根据该更新后的等价 PLMN 列表来选择合适小区( Suitable Cell )驻留, 即根据包含了所述 LTE PLMN 的标识信息的等价 PLMN 列表来选择合适小区驻留, 并从所选合适小区 的可用 PLMN中选择 LTE PLMN。 进一步的, 根据所述等价 PLMN列表 进行 PLMN选择,可以包括:根据所述等价 PLMN列表优先选择所述 LTE PLMN 的标识信息对应的 LTE PLMN , 即从所选合适小区的所有可用 PLMN中, 优先选择保存的 LTE PLMN的标识信息对应的 PLMN。 进一 步的, 所述优先选择所述 LTE PLMN, 可以包括: 根据所述等价 PLMN 列表, 在 LTE频段信息对应的频段上选择合适小区 ( Suitable Cell )驻留, 从所述合适小区的可用 PLMN中优先选择保存的 LTE PLMN的标识信息 对应的 PLMN。
可选的, 所述 LTE频段信息可以为所述 UE在向所述 LTE PLMN发 起联合注册时所选择的 LTE频段的信息。在所述 UE发起 CSFB业务回落 到 2G/3G网络时, UE还可以保存向所述 LTE PLMN发起联合注册时所选 择的 LTE频段信息; 这样, 当 CSFB业务结束后需要回归 LTE时, 可以 根据所述等价 PLMN列表在所述 LTE频段信息对应的频段上选择合适小 区 ( Suitable Cell ) 驻留, 从所述合适小区的可用 PLMN中优先选择所述
保存的 LTE PLMN的标识信息对应的 PLMN。
可选的, 所述 LTE频段信息可以为所述 UE从所述 2G/3 G网络接收 的。 UE接收 2G/3G网络中 2G/3G基站发送的 LTE频段信息; 这样, 当 CSFB业务结束后需要回归 LTE时, 可以根据所述等价 PLMN列表在所 述 LTE频段信息对应的频段上选择合适小区 ( Suitable Cell ) 驻留, 从所 述合适小区的可用 PLMN中优先选择所述保存的 LTE PLMN的标识信息 对应的 PLMN。
具体的, 2G/3G基站可以通过如下任一实现方式来选择所述 LTE频 段信息:
在一种可选的实现方式中, 2G/3G基站接收服务 MSC/VLR发送的连 接释放消息, 其中, 所述连接释放消息中包含用户设备 UE发起 CSFB业 务时所注册 LTE PLMN的标识信息,即步骤 401 中 UE注册的 LTE PLMN 的标识信息, 然后, 2G/3G基站可以根据该 LTE PLMN的标识信息选择 LTE频段 ( Frequency ) 信息。 需要说明的是, 所述 2G/3G基站可以根据 该 LTE PLMN的标识信息选择 LTE频段信息,是指 2G/3G基站可以将 LTE PLMN的标识信息作为一个考虑因素来选择 LTE频段信息, 2G/3G基站 也可以考虑其它因素来选择 LT E频段信息, 本实施例对此不做限定。
在另一种可选的实现方式中,服务 MSC/VLR可以不用向 2G/3G基站 发送 UE所注册的 LTE PLMN的标识信息, 也就是说网络侧的 2G/3G基 站和服务 MSC/VLR等均采用现有的连接释放流程,此时 2G/3G基站可以 根据从服务 MSC/VLR接收到的 CSFB指示选择 LTE频段 ( Frequency ) 信息,所选择的 LTE频段信息可以是为 UE提供 CSFB业务的服务 PLMN 支持的 LTE频段信息, 也可以是其他 LTE频段信息。
进一步地, 2G/3G 基站可以通过如下任一实现方式将所选择的 LTE 频段信息发送给 UE:
在一种可选的实现方式中, 2G/3G基站可以将所选择的 LTE频段信 息包含在连接释放消息中或者信道释放消息中发送给 UE。 具体地, 若 2G/3G基站为 2G网络中的基站子系统 BSS ,则将所选择的 LTE频段信息 包含在信道释放 ( Channel Release ) 消息中发送给 UE; 若 2G/3G基站为 3G 网络中的无线网络子系统 RNS , 则将所选择的 LTE 频段信息包含在 RRC连接释放消息中发送给 UE。 UE在收到连接释放消息或者信道释放 消息后, 进入空闲态。
在另一种可选的实现方式中, 2G/3G基站可以将所选择的 LTE频段 信息包含在优先级信息中, 然后, 若 2G/3G基站为 2G网络中的基站子系 统 BSS ,则 2G/3G基站将该优先级信息包含在信道释放( Channel Release ) 消息中发送给 UE; 若 2G/3G基站为 3G网络中的无线网络子系统 RNS , 则 2G/3G基站将该优先级信息包含在移动信息 ( Mobility Information )消 息中发送给 UE。
本发明实施例提供的选择 LTE网络的方法, UE将在发起 CSFB业务 时注册的 LTE PLMN的标识信息加入到等价 PLMN列表, 在 CSFB业务 结束后可以根据更新后的等价 PLMN列表选择 LTE PLMN回归到 LTE网 络, 以确保 UE可以回到发起 CSFB时所注册的 LTE PLMN , 既减少不必 要的 PLMN网间切换, 又可以恢复在之前注册的 LTE PLMN中被挂起的 数据业务, 提高业务效率, 提升用户体验。 本发明另一实施例提供一种选择 LTE网络的方法, UE不用更新等价
PLMN列表, 如图 5所示, 该方法包括:
501、 用户设备 UE在 LTE公共陆地移动网络 PLMN联合注册。
其中, UE同时注册到 2G/3G网络和 LTE网络, 在 LTE网络中可以 进行数据业务, 当需要进行电路域 CS业务时可以发起 CSFB流程, 回落 到 2G/3G网络。
502、 所述 UE发起电路域回落 CSFB业务回落到 2G/3G网络, 保存 所述 LTE频段信息, 所述 LTE频段信息为所述 UE向所述 LTE PLMN发 起联合注册时所选择的 LTE频段信息。
进一步的, UE可以保存发起 CSFB业务时所注册的 LTE PLMN的标 识信息, 其中, 所保存的 LTE PLMN的标识信息可以为: 注册 LTE PLMN 标识 (identity , ID ), 还可以为包含注册 LTE PLMN ID 的 3艮踪域标识 ( Tracking Area Identity, TAI ), 还可以为包含注册 LTE PLMN ID的全局 唯一临时标识 ( Globally Unique Temporary Identity, GUTI )。
503、 在所述 CSFB业务结束后, UE在所述 LTE频段信息对应的频 段上进行 PLMN选择。
其中, 所述在所述 LTE频段信息对应的频段上进行 PLMN选择, 包 括: 在所述 LTE频段信息对应的频段上选择合适小区 ( Suitable Cell ) 驻 留, 从所述合适小区的可用 PLMN中优先选择所述保存的 LTE PLMN的 标识信息对应的 LTE PLMN。
本发明实施例提供的选择 LTE网络的方法, UE在发起联合注册时所 选择的 LTE频段信息上进行 PLMN选择, 以确保 UE可以回到发起 CSFB 时所注册的 LTE PLMN , 既减少不必要的 PLMN网间切换, 又可以恢复 在之前注册的 LTE PLMN中被挂起的数据业务, 提高业务效率, 提升用
户体验。 本发明另一实施例提供一种选择 LTE 网络的方法, 如图 6所示, 该 方法包括:
601、 2G/3G基站接收服务 MSC/VLR发送的连接释放消息, 其中, 所述连接释放消息中包含用户设备 UE发起 CSFB业务时所注册的 LTE公 共陆地移动网络 PLMN的标识信息, 所述 2G/3G基站是为所述 CSFB业 务提供服务的基站。
其中, 2G/3G基站是为 UE的 CS业务提供服务的基站, UE在 2G/3G 基站的服务小区中进行 CSFB业务, 例如 2G/3G基站可以为 BSS/RNS。 在本实施例中, 在 UE触发的 CSFB业务结束后, 服务 MSC/VLR可以将 CSFB指示、 UE的标识以及所述 UE在发起 CSFB时所注册的 LTE PLMN 的标识信息发送给 2G/3G基站, 这样, 当 UE的 CSFB业务结束后, 可以 重新回归到之前发起 CSFB时注册的 LTE网络。
需要说明的是, 若所述服务 MSC/VLR是所述 UE的注册 MSC/VLR, 则所述良务 MSC/VLR从所述 UE的注册信息中获取所述 UE的标识与所 述 UELTE PLMN的标识信息。 若所述服务 MSC/VLR不是所述 UE的注 册 MSC/VLR,则所述服务 MSC/VLR从所述 UE的注册 MSC/VLR中获取 所述 UE的标识与所述 UELTE PLMN的标识信息。
其中, 所述 UE 的标识可以为系统架构演进 ( System Architecture
Evolution, SAE ) 临时移动用户标识 ( SAE Temporary Mobile Subscriber Identity , S-TMSI )、 国际移动用户标识 ( International Mobile Subscriber Identity , IMSI ) 或者临时移动用户标识 ( Temporary Mobile Subscriber
Identity, TMSI ), 本发明实施例对此不做限定。 所述 UE发起 CSFB业务 时所注册的 LTE PLMN的标识信息,可以为注册 LTE PLMN标识( identity , ID ), 还可以为包含注册 LTE PLMN ID 的全局唯一临时标识 (Globally Unique Temporary Identity, GUTI ), 还可以为包含注册 LTE PLMN ID的 3艮踪域标识( Tracking Area Identity, TAI ), 还可以为包含注册 LTE PLMN ID的 E-UTRAN 小区全局标识符(E-UTRAN Cell Global Identity, ECGI) , 本发明实施例对此不做限定。
602、 所述 2G/3G基站根据所述 LTE PLMN的标识信息, 选择目标频 段信息, 向所述 UE发送所述目标频段信息, 所述目标频段信息用于指示 所述 UE在所述目标频段信息对应的频段上选择小区驻留。
其中, 所述 2G/3G基站根据所述 LTE PLMN的标识信息, 选择目标 频段信息, 是指 2G/3G基站可以将所述 LTE PLMN的标识信息作为一个 考虑因素来选择 LTE频段信息,第二基站也可以考虑其它因素来选择 LTE 频段信息, 本实施例对此不做限定。
进一步地, 所述向所述 UE发送所述目标频段信息, 包括, 2G/3G基 站具体可以通过如下任一实现方式将所选择的目标频段信息发送给所述 UE:
在一种可选的实现方式中, 2G/3G基站可以将所选择的目标频段信息 包含在连接释放消息中或者信道释放消息中发送给 UE。具体地,若 2G/3G 基站为 2G网络中的基站子系统 BSS , 则将所选择的目标频段信息包含在 信道释放 (Channel Release ) 消息中发送给 UE; 若 2G/3G基站为 3G网 络中的无线网络子系统 RNS , 则将所选择的目标频段信息包含在 RRC连 接释放消息中发送给 UE。 UE在收到连接释放消息或者信道释放消息后,
进入空闲态。
在另一种可选的实现方式中, 2G/3G基站可以将所选择的目标频段信 息包含在优先级信息中, 然后, 若 2G/3G基站为 2G网络中的基站子系统 BSS , 则 2G/3G基站将该优先级信息包含在信道释放 ( Channel Release ) 消息中发送给 UE; 若 2G/3G基站为 3G网络中的无线网络子系统 RNS , 则 2G/3G基站将该优先级信息包含在移动信息 ( Mobility Information )消 息中发送给 UE。
对于 UE而言, UE根据等价 PLMN列表, 在 2G/3G基站所选择的目 标频段信息对应的 LTE频段上选择合适小区 ( Suitable Cell ) 驻留, 从所 述合适小区的可用 PLMN 中优先选择 LTE PLMN 的标识信息对应的 PLMN。 需要说明的是, 在本实现方式中, 若 UE已经保存了在所述 LTE PLMN 中发起联合注册时所选择的 LTE频段 (Frequency ) 信息, 则 UE 可以根据保存的等价 PLMN列表, 优先在该已保存的 LTE频段信息对应 的 LTE频段上选择合适小区 ( Suitable Cell ) 驻留, 并从所述合适小区的 可用 PLMN中优先选择保存的 LTE PLMN的标识信息对应的 PLMN。
本发明实施例提供的选择 LTE网络的方法, 当 UE的 CSFB业务结束 后, 2G/3G基站根据 UE注册的 LTE PLMN的标识信息选择目标频段信息 发送给 UE, 以便当 UE发起到 LTE网络的连接建立请求时, 在该目标频 段信息对应的频段上选择 LTE小区驻留,可以确保 UE在发起 CSFB之前 所处的频段上搜索小区, 以回到发起 CSFB时所注册的 LTE PLMN , 既减 少不必要的 PLMN网间切换, 又可以恢复在之前注册的 LTE PLMN中被 挂起的数据业务, 提高业务效率, 提升用户体验。
本发明另一实施例提供一种 UE, 如图 7所示, 包括: 处理器 72和接 收器 71。
接收器 71 ,用于在所述 UE在长期演进 LTE公共陆地移动网络 PLMN 联合注册, 发起电路域回落 CSFB业务回落到第二代 /第三代 2G/3G网络 后, 从所述 2G/3G网络接收等价 PLMN列表;
处理器 72 , 用于将所述 LTE PLMN的标识信息加入到所述接收器 71 接收的所述等价 PLMN列表; 在所述 CSFB业务结束后, 根据所述等价 PLMN列表进行 PLMN选择。
进一步的, 所述处理器 72用于: 根据所述等价 PLMN列表优先选择 所述 LTE PLMN。
可选的, 所述处理器 72用于: 根据所述等价 PLMN列表, 在 LTE频 段信息对应的频段上选择小区, 从所述小区的可用 PLMN 中优先选择所 述 LTE PLMN; 其中, 所述 LTE频段信息为所述 UE在向所述 LTE PLMN 发起联合注册时所选择的 LTE频段的信息。
可选的, 所述处理器 72用于: 根据所述等价 PLMN列表, 在 LTE频 段信息对应的频段上选择小区, 从所述小区的可用 PLMN 中优先选择所 述 LTE PLMN; 其中, 所述 LTE频段信息为所述 UE从所述 2G/3G网络 接收的。
本发明实施例提供的 UE, 将在发起 CSFB业务时注册的 LTE PLMN 的标识信息加入到等价 PLMN列表, 在 CSFB业务结束后可以根据更新 后的等价 PLMN列表选择 LTE PLMN回归到 LTE网络, 以确保 UE可以 回到发起 CSFB时所注册的 LTE PLMN ,既减少不必要的 PLMN网间切换, 又可以恢复在之前注册的 LTE PLMN 中被挂起的数据业务, 提高业务效
率, 提升用户体验。 本发明另一实施例提供一种 UE, 如图 8所示, 包括: 收发器 81、 处 理器 82。
收发器 81 , 用于与网络设备之间进行交互以在 LTE公共陆地移动网 络 PLMN联合注册;
处理器 82, 用于在电路域回落 CSFB业务结束后, 在 LTE频段信息 对应的频段上进行 PLMN选择, 其中, 所述 LTE频段信息为所述 UE向 所述 LTE PLMN发起联合注册时所选择的 LTE频段的信息。
进一步的, 所述处理器 82用于: 在所述 LTE频段信息对应的频段上 选择小区, 从所述小区的可用 PLMN中优先选择所述 LTE PLMN。
进一步的, 该 UE还包括: 存储器 83。
存储器 83 , 在所述收发器发起所述 CSFB 业务以回落到电路域时, 保存所述 LTE频段信息;
所述处理器 82 , 还用于在电路域回落 CSFB 业务结束后, 从所述存 储器 83中获取所述 LTE频段信息。
本发明实施例提供的 UE, 在发起联合注册时所选择的 LTE频段信息 上进行 PLMN 选择, 以确保 UE 可以回到发起 CSFB 时所注册的 LTE PLMN , 既减少不必要的 PLMN网间切换, 又可以恢复在之前注册的 LTE PLMN中被挂起的数据业务, 提高业务效率, 提升用户体验。 本发明另一实施例提供一种 2G/3G 基站, 用于为电路域回落 CSFB 业务提供服务, 如图 9所示, 该 2G/3G基站包括: 接收器 91、 处理器 92、
发射器 93。
接收器 91 , 用于接收服务移动交换中心 /拜访位置寄存器 MSC/VLR 发送的连接释放消息, 其中, 所述连接释放消息中包含用户设备 UE发起 CSFB业务时所注册的 LTE公共陆地移动网络 PLMN的标识信息, 所述 2G/3G基站是为所述 CSFB业务提供服务的基站;
处理器 92 , 用于根据所述接收器 91接收的 LTE PLMN的标识信息, 选择目标频段信息;
发射器 93 ,用于向所述 UE发送所述处理器 92选择的目标频段信息, 所述目标频段信息用于指示所述 UE在所述目标频段信息对应的频段上选 择小区驻留。
进一步的, 所述发射器 93用于: 向所述 UE发送优先级信息, 所述 优先级信息包含所述频段信息。
本发明实施例提供的 2G/3G基站, 根据 UE注册的 LTE PLMN的标 识信息选择目标频段信息发送给 UE, 以便当 UE发起到 LTE网络的连接 建立请求时, 在该目标频段信息对应的频段上选择 LTE 小区驻留, 可以 确保 UE在发起 CSFB之前所处的频段上搜索小区, 以回到发起 CSFB时 所注册的 LTE PLMN , 既减少不必要的 PLMN网间切换, 又可以恢复在 之前注册的 LTE PLMN 中被挂起的数据业务, 提高业务效率, 提升用户 体验。 本发明另一实施例提供一种 LTE基站, 如图 10所示, 该基站包括: 接收器 1001、 处理器 1002。
接收器 1001 ,用于接收所述 UE在电路域回落 CSFB业务结束后发送
的连接建立请求消息, 其中, 所述连接建立请求消息中包含所述 UE的标 识;
处理器 1002 , 用于根据所述 UE的标识和所述 UE发起所述 CSFB业 务时注册的 LTE 公共陆地移动网络 PLMN 的标识信息, 选择所述 LTE PLMN的标识信息对应的所述 LTE PLMN。
进一步可选的, 该 LTE基站还包括: 存储器 1003。
所述接收器 1001 , 还用于接收 2G/3G基站发送的所述 UE的标识与 所述 LTE PLMN的标识信息, 其中, 所述 2G/3G基站是为所述 CSFB业 务提供服务的基站;
所述存储器 1003 ,用于保存所述接收器 1001接收的 2G/3G基站发送 的所述 UE的标识与所述 LTE PLMN的标识信息, 其中, 所述 2G/3 G基 站是为所述 CSFB业务提供服务的基站。
进一步的, 所述接收器 1001 , 还用于接收服务移动交换中心 /拜访位 置寄存器 MSC/VLR发送的连接释放消息, 其中, 所述连接释放消息中包 含所述 UE的标识与所述 LTE PLMN的标识信息; 向 LTE基站发送所述 UE的标识与所述 LTE PLMN的标识信息。
进一步的, 当所述服务 MSC/VLR是所述 UE的注册 MSC/VLR时, 所述 UE的标识和所述 LTE PLMN的标识信息是所述服务 MSC/VLR从所 述 UE的注册信息中获取的; 或者,
当所述服务 MSC/VLR不是所述 UE的注册 MSC/VLR时, 所述 UE 的标识和所述 LTE PLMN的标识信息是所述服务 MSC/VLR从所述 UE的 注册 MSC/VLR获取的。
进一步可选的,所述 LTE基站为所述 UE发起所述 CSFB业务时提供
接入服务的基站; 所述 LTE基站还包括: 存储器 1003 , 用于在所述 UE 在所述 LTE PLMN发起 CSFB业务时, 保存所述 UE的标识与所述 LTE PLMN的标识信息。
进一步的, 所述处理器 1002还用于: 删除保存的所述 UE的标识以 及所述 LTE PLMN的标识信息。
本发明实施例提供的 LTE基站, 当 UE在 CSFB业务结束后发起到 LTE网络的连接建立请求时, 根据 UE发送的 UE标识和已保存的 UE的 标识匹配, 确定并选择 UE发起 CSFB时所 LTE PLMN的标识信息, 与现 有技术定义的 CSFB后回归 LTE网络的方法相比,可以确保 UE回到发起 CSFB时所注册的 LTE PLMN , 既减少不必要的 PLMN网间切换, 又可以 恢复在之前注册的 LTE PLMN 中被挂起的数据业务, 提高业务效率, 提 升用户体验。 本发明另一实施例提供一种 UE, 如图 11所示, 包括:
注册单元 1101 , 用于在 LTE公共陆地移动网络 PLMN联合注册; 回落单元 1102 , 用于发起电路域回落 CSFB业务回落到 2G/3G网络, 接收单元 1103 , 用于在所述 2G/3G网络接收等价 PLMN列表; 加入单元 1104 , 用于将 LTE PLMN的标识信息加入到所述接收单元
1103接收的所述等价 PLMN列表;
选择单元 1105 , 用于在所述 CSFB 业务结束后, 根据被所述加入单 元 1105修改后的等价 PLMN列表进行 PLMN选择。
进一步的, 所述选择单元 1105用于:
根据被所述加入单元 1104 修改后的等价 PLMN 列表优先选择所述
LTE PLMN。
进一步可选的, 所述选择单元 1105具体用于:
根据被所述加入单元 1104修改后的等价 PLMN列表,在 LTE频段信 息对应的频段上选择小区;
从所述小区的可用 PLMN中优先选择所述 LTE PLMN;
其中, 所述 LTE频段信息为所述 UE在向所述 LTE PLMN发起联合 注册时所选择的 LTE频段的信息。
进一步可选的, 所述选择单元 1105具体用于:
根据被所述加入单元 1104修改后的等价 PLMN列表,在 LTE频段信 息对应的频段上选择小区,
从所述小区的可用 PLMN中优先选择所述 LTE PLMN;
其中, 所述 LTE频段信息为所述 UE从所述 2G/3G网络接收的。 本发明实施例提供的 UE, 将在发起 CSFB业务时注册的 LTE PLMN 的标识信息加入到等价 PLMN列表, 在 CSFB业务结束后可以根据更新 后的等价 PLMN列表选择 LTE PLMN回归到 LTE网络, 以确保 UE可以 回到发起 CSFB时所注册的 LTE PLMN ,既减少不必要的 PLMN网间切换, 又可以恢复在之前注册的 LTE PLMN 中被挂起的数据业务, 提高业务效 率, 提升用户体验。 本发明另一实施例提供一种 UE,如图 12所示,包括:注册单元 1201、 选择单元 1202。
注册单元 1201 , 用于在 LTE公共陆地移动网络 PLMN联合注册; 选择单元 1202 , 用于在电路域回落 CSFB业务结束后, 在 LTE频段
信息对应的频段上进行 PLMN选择, 其中, 所述 LTE频段信息为所述 UE 向所述 LTE PLMN发起联合注册时所选择的 LTE频段的信息。
进一步的, 所述选择单元 1202用于:
在所述 LTE 频段信息对应的频段上选择小区, 从所述小区的可用 PLMN中优先选择所述 LTE PLMNo
进一步的, 该 UE还包括: 保存单元 1203。
保存单元 1203 , 用于在发起所述 CSFB 业务回落到电路域时, 保存 所述 LTE频段信息;
所述选择单元 1202 , 用于在电路域回落 CSFB 业务结束后, 从所述 保存单元 1203获取所述 LTE频段信息。
本发明实施例提供的 UE, 在发起联合注册时所选择的 LTE频段信息 上进行 PLMN 选择, 以确保 UE 可以回到发起 CSFB 时所注册的 LTE PLMN , 既减少不必要的 PLMN网间切换, 又可以恢复在之前注册的 LTE PLMN中被挂起的数据业务, 提高业务效率, 提升用户体验。 本发明另一实施例还提供一种 2G/3G基站, 用于为电路域回落 CSFB 业务提供服务,如图 13所示,该基站包括:接收单元 1301、选择单元 1302、 发送单元 1303。
接收单元 1301 , 用于接收服务移动交换中心 /拜访位置寄存器 MSC/VLR发送的连接释放消息, 其中, 所述连接释放消息中包含用户设 备 UE发起 CSFB业务时所注册的 LTE公共陆地移动网络 PLMN的标识 信息, 所述 2G/3G基站是为所述 CSFB业务提供服务的基站;
选择单元 1302 ,用于根据所述接收单元 1301接收的 LTE PLMN的标
识信息, 选择目标频段信息, 所述目标频段信息用于指示所述 UE在所述 目标频段信息对应的频段上选择小区驻留;
发送单元 1303 , 用于向所述 UE发送所述选择单元 1302选择的目标 频段信息。
进一步的, 所述发送单元 1303用于:
向所述 UE发送优先级信息, 所述优先级信息包含所述频段信息。 本发明实施例提供的基站,根据 UE注册的 LTE PLMN的标识信息选 择目标频段信息发送给 UE, 以便当 UE发起到 LTE网络的连接建立请求 时, 在该目标频段信息对应的频段上选择 LTE 小区驻留, 可以确保 UE 在发起 CSFB之前所处的频段上搜索小区, 以回到发起 CSFB时所注册的 LTE PLMN , 既减少不必要的 PLMN网间切换, 又可以恢复在之前注册的 LTE PLMN中被挂起的数据业务, 提高业务效率, 提升用户体验。 本发明另一实施例提供一种基站, 该基站可以为 LTE基站, 如图 14 所示, 包括: 接收单元 1401、 选择单元 1402。
接收单元 1401 ,用于接收所述 UE在电路域回落 CSFB业务结束后发 送的连接建立请求消息, 其中, 所述连接建立请求消息中包含所述 UE的 标识;
选择单元 1402 , 用于根据所述接收单元 1401接收的 UE的标识和所 述 UE发起所述 CSFB业务时注册的 LTE公共陆地移动网络 PLMN的标 识信息, 选择所述 LTE PLMN的标识信息对应的所述 LTE PLMN。
进一步的, 所述接收单元 1401还用于:
在接收 2G/3G基站发送的所述 UE的标识与所述 LTE PLMN的标识
信息之前, 接收服务移动交换中心 /拜访位置寄存器 MSC/VLR 发送的连 接释放消息, 其中, 所述连接释放消息中包含所述 UE的标识与所述 LTE PLMN的标识信息; 所述 2G/3G基站向 LTE基站发送所述 UE的标识与 所述 LTE PLMN的标识信息。
进一步的, 当所述服务 MSC/VLR是所述 UE的注册 MSC/VLR时, 所述 UE的标识和所述 LTE PLMN的标识信息是所述服务 MSC/VLR从所 述 UE的注册信息中获取的; 或者,
当所述服务 MSC/VLR不是所述 UE的注册 MSC/VLR时, 所述 UE 的标识和所述 LTE PLMN的标识信息是所述服务 MSC/VLR从所述 UE的 注册 MSC/VLR获取的。
进一步的, 所述基站为所述 UE发起所述 CSFB业务时提供接入服务 的基站; 所述基站还包括:
保存单元 1403 , 用于在所述 UE在所述 LTE PLMN发起 CSFB业务 时, 所述 LTE基站保存所述 UE的标识与所述 LTE PLMN的标识信息。
进一步的, 该基站还包括: 删除单元 1404。
删除单元 1404 ,用于删除保存的所述 UE的标识以及所述 LTE PLMN 的标识信息。
本发明实施例提供的基站, 当 UE在 CSFB业务结束后发起到 LTE网 络的连接建立请求时, 根据 UE发送的 UE标识和已保存的 UE的标识匹 配, 确定并选择 UE发起 CSFB时所 LTE PLMN的标识信息, 与现有技术 定义的 CSFB后回归 LTE网络的方法相比, 可以确保 UE回到发起 CSFB 时所注册的 LTE PLMN , 既减少不必要的 PLMN网间切换, 又可以恢复 在之前注册的 LTE PLMN中被挂起的数据业务, 提高业务效率, 提升用
户体验。
通过以上的实施方式的描述,所属领域的技术人员可以清楚地了解到 本发明可借助软件加必需的通用硬件的方式来实现, 当然也可以通过硬 件, 但很多情况下前者是更佳的实施方式。 基于这样的理解, 本发明的技 术方案本质上或者说对现有技术做出贡献的部分可以以软件产品的形式 体现出来, 该计算机软件产品存储在可读取的存储介质中, 如计算机的软 盘, 硬盘或光盘等, 包括若干指令用以使得一台计算机设备(可以是个人 计算机, 服务器, 或者网络设备等) 执行本发明各个实施例所述的方法。 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 护范围应以所述权利要求的保护范围为准。
Claims
1、 一种选择长期演进 LTE网络的方法, 其特征在于, 包括:
用户设备 UE在 LTE公共陆地移动网络 PLMN联合注册;
所述 UE发起电路域回落 CSFB业务回落到第二代 /第三代 2G/3G网络; 所述 UE在所述 2G/3G网络接收等价 PLMN列表;
所述 UE将所述 LTE PLMN的标识信息加入到所述等价 PLMN列表; 在所述 CSFB 业务结束后, 所述 UE根据所述等价 PLMN 列表进行 PLMN选择。
2、根据权利要求 1所述的方法,其特征在于,所述根据所述等价 PLMN 列表进行 PLMN选择, 包括:
根据所述等价 PLMN列表优先选择所述 LTE PLMN。
3、 根据权利要求 2所述的方法, 其特征在于,
所述优先选择所述 LTE PLMN , 包括:
根据所述等价 PLMN列表, 在 LTE频段信息对应的频段上选择小区; 从所述小区的可用 PLMN中优先选择所述 LTE PLMN;
其中, 所述 LTE频段信息为所述 UE在向所述 LTE PLMN发起联合注 册时所选择的 LTE频段的信息。
4、 根据权利要求 2所述的方法, 其特征在于,
所述优先选择所述 LTE PLMN , 包括:
根据所述等价 PLMN列表, 在 LTE频段信息对应的频段上选择小区, 从所述小区的可用 PLMN中优先选择所述 LTE PLMN;
其中, 所述 LTE频段信息为所述 UE从所述 2G/3G网络接收的。
5、 一种选择长期演进 LTE网络的方法, 其特征在于, 包括:
用户设备 UE在 LTE公共陆地移动网络 PLMN联合注册; 在电路域回落 CSFB业务结束后, 所述 UE在 LTE频段信息对应的频 段上进行 PLMN选择, 其中, 所述 LTE频段信息为所述 UE向所述 LTE
PLMN发起联合注册时所选择的 LTE频段的信息。
6、 根据权利要求 5所述的方法, 其特征在于, 所述 UE在所述 LTE频 段信息对应的频段上进行 PLMN选择, 包括:
所述 UE在所述 LTE频段信息对应的频段上选择小区, 从所述小区的 可用 PLMN中优先选择所述 LTE PLMN。
7、 根据权利要求 5或 6所述的方法, 其特征在于, 所述方法还包括: 所述 UE发起所述 CSFB业务回落到电路域时, 保存所述 LTE频段信 息。
8、 一种选择长期演进 LTE网络的方法, 其特征在于, 包括:
第二代 /第三代 2G/3G 基站接收服务移动交换中心 /拜访位置寄存器
MSC/VLR发送的连接释放消息, 其中, 所述连接释放消息中包含用户设备 UE发起 CSFB业务时所注册的 LTE公共陆地移动网络 PLMN的标识信息, 所述 2G/3G基站是为所述 CSFB业务提供服务的基站;
所述 2G/3G基站根据所述 LTE PLMN的标识信息,选择目标频段信息, 向所述 UE 发送所述目标频段信息, 所述目标频段信息用于指示所述 UE 在所述目标频段信息对应的频段上选择小区驻留。
9、 根据权利要求 8所述的方法, 其特征在于, 所述向所述 UE发送所 述目标频段信息, 包括:
向所述 UE发送优先级信息, 所述优先级信息包含所述频段信息。
10、 一种选择长期演进 LTE网络的方法, 其特征在于, 包括:
LTE基站接收所述 UE在电路域回落 CSFB业务结束后发送的连接建 立请求消息, 其中, 所述连接建立请求消息中包含所述 UE的标识;
根据所述 UE的标识和所述 UE发起所述 CSFB业务时注册的 LTE公 共陆地移动网络 PLMN的标识信息, 所述 LTE基站选择所述 LTE PLMN 的标识信息对应的所述 LTE PLMN。
11、 根据权利要求 10所述的方法, 其特征在于, 所述方法还包括: 所述 LTE基站接收并保存第二代 /第三代 2G/3G基站发送的所述 UE的 标识与所述 LTE PLMN的标识信息,其中,所述 2G/3G基站是为所述 CSFB 业务提供服务的基站。
12、 根据权利要求 11 所述的方法, 其特征在于, 在所述 LTE基站接 收 2G/3G基站发送的所述 UE的标识与所述 LTE PLMN的标识信息之前, 所述方法还包括:
所述 2G/3G基站接收服务移动交换中心 /拜访位置寄存器 MSC/VLR发 送的连接释放消息, 其中, 所述连接释放消息中包含所述 UE 的标识与所 述 LTE PLMN的标识信息;
所述 2G/3G基站向 LTE基站发送所述 UE的标识与所述 LTE PLMN的 标识信息。
13、 根据权利要求 12所述的方法, 其特征在于,
当所述服务 MSC/VLR是所述 UE的注册 MSC/VLR时, 所述 UE的标 识和所述 LTE PLMN的标识信息是所述服务 MSC/VLR从所述 UE的注册 信息中获取的; 或者,
当所述服务 MSC/VLR不是所述 UE的注册 MSC/VLR时, 所述 UE的 标识和所述 LTE PLMN的标识信息是所述服务 MSC/VLR从所述 UE的注
册 MSC/VLR获取的。
14、 根据权利要求 10所述的方法, 其特征在于, 所述 LTE基站为所 述 UE发起所述 CSFB业务时提供接入服务的基站;
所述方法还包括:
在所述 UE在所述 LTE PLMN发起 CSFB业务时, 所述 LTE基站保存 所述 UE的标识与所述 LTE PLMN的标识信息。
15、 根据权利要求 11-14任一所述的方法, 其特征在于, 所述方法还 包括:
所述 LTE基站删除保存的所述 UE的标识以及所述 LTE PLMN的标识 信息。
16、 一种用户设备 UE, 其特征在于, 包括:
接收器, 用于在所述 UE在长期演进 LTE公共陆地移动网络 PLMN联 合注册, 发起电路域回落 CSFB业务回落到第二代 /第三代 2G/3G网络后, 从所述 2G/3G网络接收等价 PLMN列表; 和
处理器, 用于将所述 LTE PLMN的标识信息加入到所述接收器接收的 所述等价 PLMN列表, 在所述 CSFB业务结束后, 根据所述等价 PLMN列 表进行 PLMN选择。
17、 根据权利要求 16所述的 UE, 其特征在于, 所述处理器用于: 根据所述等价 PLMN列表优先选择所述 LTE PLMN。
18、 根据权利要求 17所述的 UE, 其特征在于, 所述处理器用于: 根据所述等价 PLMN列表, 在 LTE频段信息对应的频段上选择小区, 从所述小区的可用 PLMN中优先选择所述 LTE PLMN;
其中, 所述 LTE频段信息为所述 UE在向所述 LTE PLMN发起联合注
册时所选择的 LTE频段的信息。
19、 根据权利要求 17所述的 UE, 其特征在于, 所述处理器用于: 根据所述等价 PLMN列表, 在 LTE频段信息对应的频段上选择小区, 从所述小区的可用 PLMN中优先选择所述 LTE PLMN;
其中, 所述 LTE频段信息为所述 UE从所述 2G/3G网络接收的。
20、 一种用户设备 UE, 其特征在于, 包括:
收发器, 用于与网络设备之间进行交互以在 LTE 公共陆地移动网络 PLMN联合注册; 和
处理器, 用于在电路域回落 CSFB业务结束后, 在 LTE频段信息对应 的频段上进行 PLMN选择,其中,所述 LTE频段信息为所述 UE向所述 LTE PLMN发起联合注册时所选择的 LTE频段的信息。
21、 根据权利要求 20所述的 UE, 其特征在于, 所述处理器用于: 在所述 LTE 频段信息对应的频段上选择小区, 从所述小区的可用
PLMN中优先选择所述 LTE PLMNo
22、 根据权利要求 20或 21所述的 UE, 其特征在于, 还包括: 存储器, 在所述发射器发起所述 CSFB 业务以回落到电路域时, 保存 所述 LTE频段信息;
所述处理器, 还用于在电路域回落 CSFB业务结束后, 从所述存储器 中获取所述 LTE频段信息。
23、 一种第二代 /第三代 2G/3G基站, 用于为电路域回落 CSFB业务提 供服务, 其特征在于, 包括:
接收器, 用于接收服务移动交换中心 /拜访位置寄存器 MSC/VLR发送 的连接释放消息, 其中, 所述连接释放消息中包含用户设备 UE发起 CSFB
业务时所注册的 LTE公共陆地移动网络 PLMN的标识信息;
处理器, 用于根据所述接收器接收的 LTE PLMN的标识信息, 选择目 标频段信息, 所述目标频段信息用于指示所述 UE在所述目标频段信息对 应的频段上选择小区驻留;
发射器, 用于向所述 U E发送所述处理器选择的目标频段信息。
24、 根据权利要求 23所述的 2G/3G基站, 其特征在于, 所述发射器 用于:
向所述 UE发送优先级信息, 所述优先级信息包含所述频段信息。
25、 一种长期演进 LTE基站, 其特征在于, 包括:
接收器, 用于接收用户设备 UE在电路域回落 CSFB业务结束后发送 的连接建立请求消息, 其中, 所述连接建立请求消息中包含所述 UE 的标 识; 和
处理器,用于根据所述 UE的标识和所述 UE发起所述 CSFB业务时注 册的 LTE公共陆地移动网络 PLMN的标识信息,选择所述 LTE PLMN的标 识信息对应的所述 LTE PLMN。
26、 根据权利要求 25所述的 LTE基站, 其特征在于, 还包括: 存储 器;
所述接收器, 还用于接收第二代 /第三代 2G/3G基站发送的所述 UE的 标识与所述 LTE PLMN的标识信息,其中,所述 2G/3G基站是为所述 CSFB 业务提供服务的基站;
所述存储器, 用于保存所述接收器接收的 2G/3G基站发送的所述 UE 的标识与所述 LTE PLMN的标识信息。
27、 根据权利要求 25所述的 LTE基站, 其特征在于, 所述 LTE基站
为所述 UE发起所述 CSFB业务时提供接入服务的基站; 所述 LTE基站还 包括:
存储器, 用于在所述 UE在所述 LTE PLMN发起 CSFB业务时, 保存 所述 UE的标识与所述 LTE PLMN的标识信息。
28、 根据权利要求 26或 27所述的 LTE基站, 其特征在于, 所述处理 器还用于: 删除保存的所述 UE的标识以及所述 LTE PLMN的标识信息。
29、 一种用户设备 UE, 其特征在于, 包括:
注册单元, 用于在长期演进 LTE公共陆地移动网络 PLMN联合注册; 回落单元, 用于发起电路域回落 CSFB 业务回落到第二代 /第三代 2G/3G网络,
接收单元, 用于在所述 2G/3G网络接收等价 PLMN列表;
加入单元, 用于将 LTE PLMN的标识信息加入到所述接收单元接收的 所述等价 PLMN列表;
选择单元, 用于在所述 CSFB 业务结束后, 根据被所述加入单元修改 后的等价 PLMN列表进行 PLMN选择。
30、 根据权利要求 29所述的 UE, 其特征在于, 所述选择单元用于: 根据被所述加入单元修改后的等价 PLMN 列表优先选择所述 LTE
PLMN。
31、 根据权利要求 30所述的 UE, 其特征在于, 所述选择单元用于: 根据被所述加入单元修改后的等价 PLMN列表,在 LTE频段信息对应 的频段上选择小区;从所述小区的可用 PLMN中优先选择所述 LTE PLMN; 其中, 所述 LTE频段信息为所述 UE在向所述 LTE PLMN发起联合注 册时所选择的 LTE频段的信息。
32、 根据权利要求 30所述的 UE, 其特征在于, 所述选择单元用于: 根据被所述加入单元修改后的等价 PLMN列表,在 LTE频段信息对应 的频段上选择小区,从所述小区的可用 PLMN中优先选择所述 LTE PLMN; 其中, 所述 LTE频段信息为所述 UE从所述 2G/3G网络接收的。
33、 一种用户设备 UE, 其特征在于, 包括:
注册单元, 用于在长期演进 LTE公共陆地移动网络 PLMN联合注册; 选择单元, 用于在电路域回落 CSFB业务结束后, 在 LTE频段信息对 应的频段上进行 PLMN选择, 其中, 所述 LTE频段信息为所述 UE向所述
LTE PLMN发起联合注册时所选择的 LTE频段的信息。
34、 根据权利要求 33所述的 UE, 其特征在于, 所述选择单元用于: 在所述 LTE 频段信息对应的频段上选择小区, 从所述小区的可用
PLMN中优先选择所述 LTE PLMNo
35、 根据权利要求 33或 34所述的 UE, 其特征在于, 还包括: 保存单元,用于在发起所述 CSFB业务回落到电路域时,保存所述 LTE 频段信息;
所述选择单元, 还用于在电路域回落 CSFB 业务结束后, 从所述保存 单元获取所述 LTE频段信息。
36、 一种第二代 /第三代 2G/3G基站, 用于为电路域回落 CSFB业务提 供服务, 其特征在于, 包括:
接收单元, 用于接收服务移动交换中心 /拜访位置寄存器 MSC/VLR发 送的连接释放消息,其中,所述连接释放消息中包含用户设备 UE发起 CSFB 业务时所注册的 LTE公共陆地移动网络 PLMN的标识信息;
选择单元, 用于根据所述接收单元接收的 LTE PLMN的标识信息, 选
择目标频段信息, 所述目标频段信息用于指示所述 UE在所述目标频段信 息对应的频段上选择小区驻留;
发送单元, 用于向所述 UE发送所述选择单元选择的目标频段信息。
37、 根据权利要求 36所述的 2G/3G基站, 其特征在于, 所述发送单 元用于:
向所述 UE发送优先级信息, 所述优先级信息包含所述频段信息。
38、 一种长期演进 LTE基站, 其特征在于, 包括:
接收单元, 用于接收用户设备 UE在电路域回落 CSFB业务结束后发 送的连接建立请求消息, 其中, 所述连接建立请求消息中包含所述 UE 的 标识;
选择单元, 用于根据所述接收单元接收的所述 UE 的标识和所述 UE 发起所述 CSFB业务时注册的 LTE公共陆地移动网络 PLMN的标识信息, 选择所述 LTE PLMN的标识信息对应的所述 LTE PLMN。
39、 根据权利要求 38所述的 LTE基站, 其特征在于, 所述接收单元 还用于:
接收并保存第二代 /第三代 2G/3G基站发送的所述 UE 的标识与所述 LTE PLMN的标识信息, 其中, 所述 2G/3G基站是为所述 CSFB业务提供 服务的基站。
40、 根据权利要求 38所述的 LTE基站, 其特征在于, 所述 LTE基站 为所述 UE发起所述 CSFB业务时提供接入服务的基站; 所述 LTE基站还 包括:
保存单元, 用于在所述 UE在所述 LTE PLMN发起 CSFB业务时, 保 存所述 UE的标识与所述 LTE PLMN的标识信息。
41、 根据权利要求 38-40中任一项所述的 LTE基站, 其特征在于, 还 包括:
删除单元, 用于删除保存的所述 UE的标识以及所述 LTE PLMN的标 识信息。
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US9565546B2 (en) | 2015-03-04 | 2017-02-07 | Qualcomm Incorporated | Enhanced system acquisition while roaming |
| EP3169110A4 (en) * | 2015-04-30 | 2018-01-10 | Guangdong Oppo Mobile Telecommunications Corp., Ltd. | Network access method and mobile communications terminal |
| EP3169109A4 (en) * | 2015-04-30 | 2018-03-28 | Guangdong Oppo Mobile Telecommunications Corp., Ltd. | Network access method and mobile communication terminal |
| EP3188553A4 (en) * | 2015-06-19 | 2018-04-18 | Guangdong Oppo Mobile Telecommunications Corp., Ltd. | Network access method and mobile terminal |
Families Citing this family (15)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2870385B2 (ja) | 1993-10-18 | 1999-03-17 | 株式会社高岳製作所 | 三相交流回路の零相電圧検出回路 |
| WO2014200408A1 (en) * | 2013-06-14 | 2014-12-18 | Telefonaktiebolaget L M Ericsson (Publ) | First network node, second network node, and methods therein, of providing a last used public land mobile network identifier |
| WO2015001387A1 (en) * | 2013-07-03 | 2015-01-08 | Nokia Corporation | Lte discovery after system change |
| CN104904265B (zh) * | 2013-12-31 | 2019-04-16 | 华为技术有限公司 | 一种选择长期演进lte网络的方法及设备 |
| JP6394325B2 (ja) * | 2014-11-26 | 2018-09-26 | 富士通株式会社 | ネットワーク制御方法,通信装置,および通信システム |
| US10462839B2 (en) * | 2015-04-08 | 2019-10-29 | Lg Electronics Inc. | Method for transmitting sidelink terminal information of terminal in wireless communication system and terminal utilizing the method |
| WO2017171924A1 (en) * | 2016-04-01 | 2017-10-05 | Intel Corporation | Devices and methods for resume failure fallback |
| US20170303181A1 (en) * | 2016-04-13 | 2017-10-19 | Qualcomm Incorporated | Cell change management during voice call establishment |
| CN107959974B (zh) * | 2017-12-13 | 2021-05-18 | 北京小米移动软件有限公司 | 通信处理方法、终端及存储介质 |
| US10701608B2 (en) * | 2018-03-29 | 2020-06-30 | Charter Communications Operating, Llc | Use of dynamic connection priority information to control network connectivity |
| WO2019221033A1 (en) * | 2018-05-18 | 2019-11-21 | Nec Corporation | A method for synchronizing status of ue in a communication network |
| KR20210125380A (ko) * | 2020-04-08 | 2021-10-18 | 삼성전자주식회사 | 무선 통신 시스템에서 음성 핸드오버 지원 방법 및 장치 |
| CN113747517B (zh) * | 2020-05-28 | 2023-02-03 | 中国电信股份有限公司 | EPS Fallback后从LTE重定向到NR的方法和设备 |
| JP2022042714A (ja) * | 2020-09-03 | 2022-03-15 | 株式会社Jvcケンウッド | 通信装置、通信方法、および通信プログラム |
| CN113709837B (zh) * | 2021-09-02 | 2024-09-27 | 维沃移动通信有限公司 | 信息处理方法、装置和电子设备 |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101511079A (zh) * | 2007-11-01 | 2009-08-19 | 华为技术有限公司 | 一种通过演进网络临时标识接入旧有网络的方法和装置 |
| WO2011153702A1 (zh) * | 2010-06-10 | 2011-12-15 | 华为技术有限公司 | 公众陆地移动网的选择方法、装置及系统 |
| CN102547891A (zh) * | 2010-12-15 | 2012-07-04 | 中兴通讯股份有限公司 | 实现电路交换回落业务的方法及双接收模式终端 |
Family Cites Families (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US8306537B2 (en) * | 2009-06-16 | 2012-11-06 | Research In Motion Limited | Method for accessing a service unavailable through a network cell |
| US8600390B2 (en) * | 2010-02-02 | 2013-12-03 | Telefonaktiebolet L M Ericsson (publ) | Returning user equipment to a source radio access network |
| JP5584081B2 (ja) * | 2010-10-07 | 2014-09-03 | 株式会社Nttドコモ | 通信制御システム及び移動局制御方法 |
| US20120182912A1 (en) * | 2011-01-14 | 2012-07-19 | Interdigital Patent Holdings, Inc. | Methods, apparatus and systems for local internet protocol access connection handling during circuit switched fallback and handover |
| JP5718521B2 (ja) * | 2011-04-02 | 2015-05-13 | クゥアルコム・インコーポレイテッドQualcomm Incorporated | 無線アクセス技術(rat)間モビリティのためのシステム及び方法 |
| JP2014519747A (ja) * | 2011-05-26 | 2014-08-14 | マヴェニール システムズ,インク | 回路切り換えフォールバックのためのインターネットワーキング |
| JP5798850B2 (ja) * | 2011-09-16 | 2015-10-21 | 株式会社Nttドコモ | ユーザ端末、及び通信方法 |
| EP2820883A2 (en) * | 2012-02-29 | 2015-01-07 | Telefonaktiebolaget LM Ericsson (Publ) | Methods and apparatus for enhancing circuit-switched call fallback (csfb) service for a shared network node |
| EP2717623A1 (en) * | 2012-10-03 | 2014-04-09 | Alcatel Lucent | Support of CS fallback in an evolved packet system |
| CA2890001A1 (en) * | 2012-11-05 | 2014-05-08 | Huawei Technologies Co., Ltd. | Method, device, and system for returning to long term evolution lte network |
-
2013
- 2013-01-09 WO PCT/CN2013/070283 patent/WO2014107855A1/zh not_active Ceased
- 2013-01-09 CN CN201380000166.7A patent/CN104255060A/zh active Pending
- 2013-01-09 EP EP13870928.2A patent/EP2945425A4/en not_active Withdrawn
- 2013-01-09 JP JP2015551948A patent/JP6146787B2/ja not_active Expired - Fee Related
-
2015
- 2015-07-08 US US14/794,223 patent/US20150312809A1/en not_active Abandoned
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101511079A (zh) * | 2007-11-01 | 2009-08-19 | 华为技术有限公司 | 一种通过演进网络临时标识接入旧有网络的方法和装置 |
| WO2011153702A1 (zh) * | 2010-06-10 | 2011-12-15 | 华为技术有限公司 | 公众陆地移动网的选择方法、装置及系统 |
| CN102547891A (zh) * | 2010-12-15 | 2012-07-04 | 中兴通讯股份有限公司 | 实现电路交换回落业务的方法及双接收模式终端 |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US9565546B2 (en) | 2015-03-04 | 2017-02-07 | Qualcomm Incorporated | Enhanced system acquisition while roaming |
| EP3169110A4 (en) * | 2015-04-30 | 2018-01-10 | Guangdong Oppo Mobile Telecommunications Corp., Ltd. | Network access method and mobile communications terminal |
| EP3169109A4 (en) * | 2015-04-30 | 2018-03-28 | Guangdong Oppo Mobile Telecommunications Corp., Ltd. | Network access method and mobile communication terminal |
| US10206163B2 (en) | 2015-04-30 | 2019-02-12 | Guangdong Oppo Mobile Telecommunications Corp., Ltd. | Network access method and mobile communications terminal |
| US10517037B2 (en) | 2015-04-30 | 2019-12-24 | Guangdong Oppo Mobile Telecommunications Corp., Ltd. | Network access method and mobile communications terminal |
| EP3188553A4 (en) * | 2015-06-19 | 2018-04-18 | Guangdong Oppo Mobile Telecommunications Corp., Ltd. | Network access method and mobile terminal |
| US10334512B2 (en) | 2015-06-19 | 2019-06-25 | Guangdong Oppo Mobile Telecommunications Corp., Ltd. | Network access method and mobile terminal |
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| EP2945425A1 (en) | 2015-11-18 |
| JP6146787B2 (ja) | 2017-06-14 |
| US20150312809A1 (en) | 2015-10-29 |
| EP2945425A4 (en) | 2016-01-20 |
| CN104255060A (zh) | 2014-12-31 |
| JP2016508339A (ja) | 2016-03-17 |
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