WO2017128541A1 - 一种终端接入网络的方法及装置 - Google Patents

一种终端接入网络的方法及装置 Download PDF

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Publication number
WO2017128541A1
WO2017128541A1 PCT/CN2016/080821 CN2016080821W WO2017128541A1 WO 2017128541 A1 WO2017128541 A1 WO 2017128541A1 CN 2016080821 W CN2016080821 W CN 2016080821W WO 2017128541 A1 WO2017128541 A1 WO 2017128541A1
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Prior art keywords
network
lte
searched
lte network
joint
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PCT/CN2016/080821
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English (en)
French (fr)
Inventor
任朝林
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宇龙计算机通信科技(深圳)有限公司
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Publication of WO2017128541A1 publication Critical patent/WO2017128541A1/zh

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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
    • H04W36/24—Reselection being triggered by specific parameters
    • H04W36/32—Reselection being triggered by specific parameters by location or mobility data, e.g. speed data
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W48/00—Access restriction; Network selection; Access point selection
    • H04W48/16—Discovering, processing access restriction or access information
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W60/00—Affiliation to network, e.g. registration; Terminating affiliation with the network, e.g. de-registration
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W36/00—Hand-off or reselection arrangements
    • H04W36/34—Reselection control

Definitions

  • the present invention relates to the field of communications technologies, and in particular, to a method and an apparatus for a terminal to access a network.
  • LTE Long Term Evolution, Chinese: Long-Term Evolution of Universal Mobile Telecommunications Technology
  • CSFB Circuit Switched Fallback
  • the terminal When the terminal camps on the LTE network, if the user initiates or receives a voice call, the terminal falls back from the LTE network to the 2G/3G network, and the voice service is provided by the voice domain of the 2G/3G network, and the voice service returns to the LTE network after the voice service ends. Resident.
  • the terminal cannot receive the service of the 2G/3G network.
  • the terminal cannot initiate a call normally and cannot receive a call, resulting in the user not being able to use the voice service normally.
  • the technical problem to be solved by the embodiments of the present invention is to provide a method and a device for a terminal to access a network.
  • a region where an LTE network overlaps with a 2G/3G network when the terminal cannot implement joint registration or joint location update, the terminal is forcibly terminated. Switch to 2G/3G network and enjoy data using 2G/3G network Business and voice business.
  • an embodiment of the present invention provides a method for a terminal to access a network, where the method includes:
  • the 2G/3G network is searched, and the registration process is initiated to the searched 2G/3G network.
  • an embodiment of the present invention further provides an apparatus for a terminal to access a network, where the apparatus includes:
  • a joint registration request sending module configured to search for an LTE network, and send a joint registration request to a searched target LTE network
  • a first response result receiving module configured to receive a response result sent by the searched target LTE network for the joint registration request
  • a first registration initiating module configured to search for a 2G/3G network to the searched 2G/3G if the result of the response to the joint registration request sent by the searched target LTE network is that only non-joint registration is allowed The network initiates the registration process.
  • the embodiment of the present invention has the following beneficial effects: when the user terminal is powered on or the network is used for the first time, the user terminal searches for the LTE network, and sends a joint registration request to the searched target LTE network; After the request sent by the user terminal is sent, the request response result is sent to the user terminal; if the response result received by the user terminal is that only non-joint registration is allowed, the 2G/3G network is searched for the searched 2G/3G network. Initiate the registration process and enjoy voice and data services using a successful 2G/3G network.
  • the present invention forcibly switches the user terminal to the 2G/3G network and implements the voice service and data through the 2G/3G network when the user terminal cannot implement the joint registration of the LTE network and the 2G/3G network. business.
  • FIG. 1 is a schematic flowchart of a method for a terminal to access a network according to an embodiment of the present invention
  • FIG. 2 is a schematic flowchart of a method for a terminal to access a network according to another embodiment of the present invention
  • FIG. 3 is a schematic flowchart of a method for a terminal to access a network according to another embodiment of the present invention.
  • FIG. 4 is a schematic structural diagram of an apparatus for a terminal to access a network according to an embodiment of the present invention
  • FIG. 5 is a schematic structural diagram of an apparatus for a terminal to access a network according to another embodiment of the present invention.
  • FIG. 6 is a schematic structural diagram of an apparatus for a terminal to access a network according to another embodiment of the present invention.
  • the method of the terminal accessing the network mentioned in the embodiments of the present invention relies on a computer program and can run on the computer system of the Von Oyman system.
  • the computer program can be integrated into the application or run as a standalone tool class application.
  • the computer system can be a terminal device such as a personal computer, a tablet computer, a notebook computer, a mobile phone, or a smart phone.
  • FIG. 1 is a schematic flowchart of a method for a terminal to access a network according to an embodiment of the present invention, where the method includes at least:
  • Step S101 Search for an LTE network, and send a joint registration request to a searched target LTE network.
  • the LTE network covers the 2G/3G network at the same time.
  • the joint registration is a user terminal (UE) simultaneously registered to the LTE network and the 2G/3G network.
  • the user terminal (UE) performs the registration process in the network before the actual service, which is a necessary process.
  • the user can receive the service from the network only after the registration is successful, and the emergency call does not require the registration process, and the emergency call is in the actual application. Not being recognized is a service, and the network can also obtain contact with the UE through paging.
  • the user terminal When the user performs the power-on operation, the user terminal (UE) searches for the current location and the surrounding LTE (Long Term Evolution) long-term evolution cell when the user terminal receives the power-on command to complete the power-on, or enters the network service area for the first time.
  • LTE Long Term Evolution
  • Internet signal In the searched multiple LTE cell networks, one LTE cell network with the best signal strength is selected as the target LTE cell network, and a joint registration request is sent to the target LTE cell network.
  • Step S102 Receive a response result sent by the searched target LTE network for the joint registration request.
  • the target LTE cell network after receiving the joint registration request sent by the UE, the target LTE cell network sends a request response result to the UE, and then the UE receives a request response result sent by the target LTE cell network.
  • Step S103 If the result of the response to the joint registration request sent by the searched target LTE network is that only non-joint registration is allowed, the 2G/3G network is searched, and the registration process is initiated to the searched 2G/3G network.
  • the UE receives the request response result sent by the target LTE cell network as an EPS (Evolved packet switch) ONLY, it indicates that only the UE is allowed to register the LTE cell network, but cannot simultaneously register.
  • the UE searches for a surrounding 2G/3G cell network and initiates a registration procedure to the searched 2G/3G cell network. If the registration is successful, the UE camps on the 2G/3G network and enjoys the voice service and the data service using the successfully registered 2G/3G cell network.
  • EPS evolved packet switch
  • the UE after the UE camps on the 2G/3G network, continue to search for other LTE cells.
  • the network sends a joint registration request. If the LTE cell network allows the joint registration, the UE initiates a joint registration process to the LTE cell that allows the joint registration. After the registration is successful, the UE resides in the LTE cell network and uses the LTE cell network to enjoy the data service. When the voice service needs to be completed, it falls back to the 2G/3G network, and after the voice service ends, the LTE network is re-resident.
  • the user terminal When the user terminal is powered on or the network is used for the first time, the user terminal searches for the LTE network, and sends a joint registration request to the searched target LTE network; after the target LTE network receives the request sent by the user terminal, The user terminal sends a request response result; if the response result received by the user terminal is that only non-joint registration is allowed, the 2G/3G network is searched, the registration process is initiated to the searched 2G/3G network, and the registration is successful. 2G/3G networks enjoy voice and data services.
  • the present invention forcibly switches the user terminal to the 2G/3G network and implements the voice service and data through the 2G/3G network when the user terminal cannot implement the joint registration of the LTE network and the 2G/3G network. business.
  • FIG. 2 is a schematic flowchart of a method for a terminal to access a network according to another embodiment of the present invention, where the method includes at least:
  • Step S201 detecting that the terminal leaves the cell where the searched target LTE network is located.
  • the coverage of the wireless network is limited due to energy, and thus the coverage of the network is identified by the location.
  • the TA trace area
  • the 2G/3G network is identified by the LA (Location Area).
  • the terminal accepts the service of the same wireless cell network, and does not need to perform the TA update, because when the terminal is paged, the mobile switching center searches all the cells in the location area of the terminal. To reduce frequent interaction with the network.
  • the UE moves and enters the TA area that is not in the TA list that it is registered, it will be served by other wireless cells. At this time, the UE needs to initiate an LA update procedure to the LTE network, so that the network knows the location of the terminal. At the same time, in order to maintain close contact with the network side, the terminal needs a periodic LA update process.
  • the tracking area identifier of the first LTE network in the multiple LTE networks Querying, in the preset tracking area identifier list, whether there is a tracking area identifier that matches a tracking area identifier of the first LTE network in the re-searched plurality of LTE networks, where the preset tracking area
  • the identifier list is a tracking area identifier of the plurality of LTE networks that are searched for when the LTE network was last searched before re-searching, and if there are no multiple LTE networks that are re-searched in the preset tracking area identifier list, And performing the step of sending the joint location update request to the first LTE network of the plurality of LTE networks that are re-searched by the tracking area identifier to which the first LTE network belongs to match the tracking area identifier.
  • Step S202 Send a joint location update request to the re-searched first LTE network, where the joint location includes a tracking area for identifying an LTE network and a location area for identifying a 2G/3G network.
  • the joint location update includes a common update for identifying the tracking area TA of the LTE network and the location area LA for identifying the 2G/3G network.
  • the LTE network is re-searched, and the joint location is sent to one target LTE cell (the first LTE cell network) of the plurality of LTE cell networks obtained by the search.
  • Update request If the TA update can be implemented, the UE can enjoy the service provided by the LTE network. If the LA update is implemented, the UE can enjoy the service provided by the 2G/3G network.
  • Step S203 receiving a response result for the joint location update request sent by the first LTE network of the re-searched multiple LTE networks.
  • the UE sends a request response result to the UE, and then the UE receives the request response result sent by the first LTE cell network.
  • Step S204 If the response result is that only the tracking area update of the LTE network is allowed to be updated, the 2G/3G network is searched again, and the registration process is initiated to the re-searched 2G/3G network.
  • the UE when the UE receives the request response result sent by the first LTE cell network to allow only the tracking area TA of the LTE network to be updated, the joint location update cannot be implemented, and the UE cannot receive the 2G/3G.
  • the services provided by the network At this time, the 2G/3G network signal covered by the current location is re-searched, and the registration process is initiated to the newly searched 2G/3G network.
  • the UE resides on the 2G/3G network and enjoys voice services and data services using the successfully registered 2G/3G network.
  • the second LTE network in the network initiates a joint location update procedure.
  • the method further sends a joint location update request to the second LTE cell network in the multiple LTE cell networks obtained by the re-search, if the second LTE network is received,
  • the response result of the joint location update request is that the joint location update is allowed
  • the UE initiates a registration process to the second LTE network, and camps on the LTE network, uses the LTE network to enjoy data services, and enjoys using the 2G/3G network. Voice business. If the response result of the second LTE network for the joint location update request is that only the tracking area update of the LTE network is allowed to be identified, the camping on the 2G/3G network continues.
  • the user equipment When the user terminal re-searches the LTE network and detects that the user terminal leaves the cell where the searched target LTE network is located, the user equipment sends a tracking area for identifying the LTE network and is used for identification. a joint location update request of a location area of the 2G/3G network, the first LTE network sending a response result of the joint location update request to the user terminal after receiving the joint location update request, if the user terminal receives The result of the response is that only the tracking area update of the LTE network is allowed to be identified. Then, the 2G/3G network is searched again, the registration process is initiated to the newly searched 2G/3G network, and the voice service and the data service are enjoyed by the successfully registered 2G/3G network.
  • the present invention forcibly switches the user terminal to the 2G/3G network and implements the voice service and the data service through the 2G/3G network when the user terminal cannot implement the joint location update.
  • FIG. 3 is a schematic flowchart of a method for a terminal to access a network according to another embodiment of the present invention, where the method includes at least:
  • Step S301 Search for an LTE network, and send a joint registration request to a searched target LTE network.
  • the LTE network covers the 2G/3G network at the same time.
  • the joint registration is a user terminal (UE) simultaneously registered to the LTE network and the 2G/3G network.
  • User terminal (UE) conducts actual business
  • the pre-registration process in the network is a necessary process.
  • the user can receive the service from the network only after the registration is successful. (The emergency call does not require the registration process.
  • the emergency call is not recognized in the actual application. Service), at the same time, the network can also obtain the contact with the UE through paging.
  • the user terminal When the user performs the power-on operation, the user terminal (UE) searches for the current location and the surrounding LTE (Long Term Evolution) long-term evolution cell when the user terminal receives the power-on command to complete the power-on, or enters the network service area for the first time.
  • LTE Long Term Evolution
  • Internet signal In the searched multiple LTE cell networks, one LTE cell network with the best signal strength is selected as the target LTE cell network, and a joint registration request is sent to the target LTE cell network.
  • Step S302 Receive a response result sent by the searched target LTE network for the joint registration request.
  • the target LTE cell network after receiving the joint registration request sent by the UE, the target LTE cell network sends a request response result to the UE, and then the UE receives a request response result sent by the target LTE cell network.
  • Step S303 If the result of the response to the joint registration request sent by the searched target LTE network is that only non-joint registration is allowed, the 2G/3G network is searched, and the registration process is initiated to the searched 2G/3G network.
  • the UE receives the request response result sent by the target LTE cell network as an EPS (Evolved packet switch) ONLY, it indicates that only the UE is allowed to register the LTE cell network, but cannot simultaneously register.
  • the UE searches for a surrounding 2G/3G cell network and initiates a registration procedure to the searched 2G/3G cell network. If the registration is successful, the UE camps on the 2G/3G network and enjoys the voice service and the data service using the successfully registered 2G/3G cell network.
  • EPS Evolved packet switch
  • the eNB continues to send the joint registration request to the searched other LTE cell network. If the LTE cell network allows the joint registration, the UE initiates the LTE cell that allows the joint registration.
  • the joint registration process after the registration is successful, resides in the LTE cell network, and uses the LTE cell network to enjoy the data service. When the voice service needs to be completed, it falls back to the 2G/3G network, and after the voice service ends, the LTE network is re-resident.
  • Step S304 detecting that the terminal leaves the cell where the searched target LTE network is located.
  • the coverage of the wireless network is limited due to energy, so the location is Identify the coverage of the network.
  • the TA trace area
  • the 2G/3G network is identified by the LA (Location Area).
  • the terminal accepts the service of the same wireless cell network, and does not need to perform the TA update, because when the terminal is paged, the mobile switching center searches all the cells in the location area of the terminal. To reduce frequent interaction with the network.
  • the UE moves and enters the TA area that is not in the TA list that it is registered, it will be served by other wireless cells. At this time, the UE needs to initiate an LA update procedure to the LTE network, so that the network knows the location of the terminal. At the same time, the terminal needs a periodic LA update process in order to maintain close contact with the network side.
  • the tracking area identifier of the tracking area identifier is matched, and the preset tracking area identifier list is the tracking area identifier of the plurality of searched LTE networks saved when searching for the LTE network before re-searching, if If there is no tracking area identifier in the preset tracking area identifier list that matches the tracking area identifier of the first LTE network in the re-searched multiple LTE networks, the multiple search to the multiple search is performed.
  • the step of the first LTE network in the LTE network transmitting a joint location update request.
  • Step S305 sending a joint location update request to the re-searched first LTE network, where the joint location includes a tracking area for identifying the LTE network and a location area for identifying the 2G/3G network.
  • the joint location update includes a common update for identifying the tracking area TA of the LTE network and the location area LA for identifying the 2G/3G network.
  • the LTE network is re-searched, and the joint location is sent to one target LTE cell (the first LTE cell network) of the plurality of LTE cell networks obtained by the search.
  • Update request If the TA update can be implemented, the UE can enjoy the service provided by the LTE network. If the LA update is implemented, the UE can enjoy the service provided by the 2G/3G network.
  • Step S306 receiving a response result for the joint location update request sent by the first LTE network of the re-searched multiple LTE networks.
  • the first LTE cell network after receiving the joint location update request sent by the UE, the first LTE cell network sends a request response result to the UE, and then the UE receives the first LTE cell network. The result of the request sent.
  • Step S307 If the response result is that only the tracking area update of the LTE network is allowed to be identified, the 2G/3G network is re-searched, and the registration process is initiated to the re-searched 2G/3G network.
  • the UE when the UE receives the request response result sent by the first LTE cell network to allow only the tracking area TA of the LTE network to be updated, the joint location update cannot be implemented, and the UE cannot receive the 2G/3G.
  • the services provided by the network At this time, the 2G/3G network signal covered by the current location is re-searched, and the registration process is initiated to the newly searched 2G/3G network.
  • the UE resides on the 2G/3G network and enjoys voice services and data services using the successfully registered 2G/3G network.
  • sending a joint location update request to the second LTE network of the re-searched multiple LTE networks if receiving the second LTE network of the re-searched multiple LTE networks for the joint.
  • the result of the response of the location update request is that the joint location update is allowed, and the joint location update procedure is initiated to the second LTE network of the re-searched multiple LTE networks.
  • the user terminal When the user terminal is powered on or the network is used for the first time, the user terminal searches for the LTE network, and sends a joint registration request to the searched target LTE network; after the target LTE network receives the request sent by the user terminal, The user terminal sends a request response result; if the response result received by the user terminal is that only non-joint registration is allowed, the 2G/3G network is searched, the registration process is initiated to the searched 2G/3G network, and the registration is successful. 2G/3G networks enjoy voice and data services.
  • the tracking area for identifying the LTE network is sent to the re-searched first LTE network and used to identify 2G/ a joint location update request of a location area of the 3G network, the first LTE network sending a response result of the joint location update request to the user terminal after receiving the joint location update request, if the response result received by the user terminal
  • the 2G/3G network is searched again, the registration process is initiated to the re-searched 2G/3G network, and the voice service and the data service are enjoyed by the successfully registered 2G/3G network.
  • the terminal in the overlapping coverage area of the LTE network and the 2G/3G network, if the user terminal cannot implement the joint registration of the LTE network and the 2G/3G network, or the joint update of the tracking area and the location area cannot be implemented, the terminal cannot initiate normally. The call cannot be received, and the user cannot use the voice service normally.
  • the present invention cannot implement the LTE network and the 2G/3G in the user terminal.
  • the user terminal is forced to switch to the 2G/3G network, and the voice service and the data service are implemented through the 2G/3G network.
  • FIG. 4 is a schematic structural diagram of a device for accessing a network by a terminal according to an embodiment of the present invention, where the device includes at least:
  • the joint registration request sending module 410 is configured to search for an LTE network, and send a joint registration request to the searched target LTE network.
  • the LTE network covers the 2G/3G network at the same time.
  • the joint registration is a user terminal (UE) simultaneously registered to the LTE network and the 2G/3G network. It is a necessary process for the user terminal (UE) to register in the network before the actual service.
  • the user can receive the service from the network only after the registration is successful. (The emergency call does not require the registration process, and the emergency call is actually applied. It is not recognized as a service), and the network can also obtain contact with the UE through paging.
  • the user terminal When the user performs the power-on operation, the user terminal (UE) searches for the current location and the surrounding LTE (Long Term Evolution) long-term evolution cell when the user terminal receives the power-on command to complete the power-on, or enters the network service area for the first time.
  • LTE Long Term Evolution
  • Internet signal In the searched multiple LTE cell networks, one LTE cell network with the best signal strength is selected as the target LTE cell network, and a joint registration request is sent to the target LTE cell network.
  • the first response result receiving module 420 is configured to receive a response result sent by the searched target LTE network for the joint registration request.
  • the target LTE cell network after receiving the joint registration request sent by the UE, the target LTE cell network sends a request response result to the UE, and then the UE receives a request response result sent by the target LTE cell network.
  • the first registration initiating module 430 is configured to search for a 2G/3G network to the searched 2G/ when the result of the response to the joint registration request sent by the searched one target LTE network is that only non-joint registration is allowed.
  • the 3G network initiates the registration process.
  • the UE receives the request response result sent by the target LTE cell network as an EPS (Evolved packet switch) ONLY, it indicates that only the UE is allowed to register the LTE cell network, but cannot simultaneously register. To the LTE cell network and the 2G/3G network. Then the UE searches for a surrounding 2G/3G cell network and initiates a note to the searched 2G/3G cell network. Book process.
  • EPS evolved packet switch
  • the device further includes a network using module 440, configured to enjoy the voice service and the data service by using the successfully registered 2G/3G network.
  • a network using module 440 configured to enjoy the voice service and the data service by using the successfully registered 2G/3G network.
  • the UE resides on the 2G/3G network, and enjoys the voice service and the data service by using the successfully registered 2G/3G cell network.
  • the device further includes: a booting module 450, configured to receive a booting command of the terminal, and trigger the joint registration request sending module to periodically search for the LTE network after being powered on.
  • a booting module 450 configured to receive a booting command of the terminal, and trigger the joint registration request sending module to periodically search for the LTE network after being powered on.
  • the user terminal When the user terminal is powered on or the network is used for the first time, the user terminal searches for the LTE network, and sends a joint registration request to the searched one target LTE network; after the target LTE network receives the request sent by the user terminal, The user terminal sends a request response result; if the response result received by the user terminal is that only non-joint registration is allowed, the 2G/3G network is searched, the registration process is initiated to the searched 2G/3G network, and the successfully registered 2G/ is used.
  • 3G networks enjoy voice and data services.
  • the present invention forcibly switches the user terminal to the 2G/3G network and implements the voice service and data through the 2G/3G network when the user terminal cannot implement the joint registration of the LTE network and the 2G/3G network. business.
  • FIG. 5 is a schematic structural diagram of a device for accessing a network by a terminal according to another embodiment of the present invention, where the device includes at least:
  • the detecting module 510 is configured to detect that the terminal leaves the cell where the searched target LTE network is located.
  • the coverage of the wireless network is limited due to energy, and thus the coverage of the network is identified by the location.
  • the TA trace area
  • the 2G/3G network is identified by the LA (Location Area).
  • the terminal accepts the service of the same wireless cell network, and does not need to perform the TA update, because when the terminal is paged, the mobile switching center searches all the cells in the location area of the terminal. To reduce frequent interaction with the network.
  • the UE moves and enters the TA area that is not in the TA list it is registered with, The UE will be served by other radio cells. In this case, the UE needs to initiate an LA update process to the LTE network, so that the network knows the location area of the terminal, and the terminal needs a periodic LA update process in order to maintain close contact with the network side.
  • the detecting module 510 is specifically configured to: obtain a tracking area identifier to which the first LTE network of the plurality of LTE networks that are re-searched belongs, and find, in the preset tracking area identifier list, whether there is more than the re-searched
  • the tracking area identifiers to which the first LTE network belongs in the LTE network match the tracking area identifiers, wherein the preset tracking area identifier list is the plurality of searched ones saved when searching for the LTE network before re-searching
  • the tracking area identifier of the LTE network if there is no tracking area identifier matching the tracking area identifier of the first LTE network in the re-searched multiple LTE networks in the preset tracking area identifier list, triggering
  • the joint location update request sending module 520 sends a joint location update request to the first LTE network of the plurality of LTE networks that are re-searched.
  • the joint location update request sending module 520 is configured to send a joint location update request to the re-searched first LTE network, where the joint location includes a tracking area for identifying the LTE network and a location area for identifying the 2G/3G network.
  • the joint location update includes a common update for identifying the tracking area TA of the LTE network and the location area LA for identifying the 2G/3G network.
  • the LTE network is re-searched, and the joint location is sent to one target LTE cell (the first LTE cell network) of the plurality of LTE cell networks obtained by the search.
  • Update request If the TA update can be implemented, the UE can enjoy the service provided by the LTE network. If the LA update is implemented, the UE can enjoy the service provided by the 2G/3G network.
  • the second response result receiving module 530 is configured to receive a response result sent by the first LTE network of the re-searched multiple LTE networks for the joint location update request.
  • the UE sends a request response result to the UE, and then the UE receives the request response result sent by the first LTE cell network.
  • the second registration initiation module 540 is configured to re-search the 2G/3G network and initiate a registration request to the re-searched 2G/3G network if the response result is that only the tracking area update of the LTE network is allowed to be identified.
  • the result of the request sent by the UE to the first LTE cell network is
  • the tracking area TA of the LTE network is only allowed to be updated, the joint location update cannot be implemented, and the UE cannot receive the service provided by the 2G/3G network.
  • the 2G/3G network signal covered by the current location is re-searched, and the registration process is initiated to the newly searched 2G/3G network.
  • the UE resides on the 2G/3G network and enjoys voice services and data services using the successfully registered 2G/3G network.
  • the re-searching for the LTE network and obtaining multiple LTE networks that are searched again;
  • the method further includes:
  • the joint location update request sending module 520 is further configured to send a joint location update request to the second LTE network of the re-searched multiple LTE networks, where the re-searched multiple LTE networks are received.
  • a joint location update procedure is initiated to the second LTE network of the re-searched multiple LTE networks.
  • the user equipment When the user terminal re-searches the LTE network and detects that the user terminal leaves the cell where the searched target LTE network is located, the user equipment sends a tracking area for identifying the LTE network and is used for identification. a joint location update request of a location area of the 2G/3G network, the first LTE network sending a response result of the joint location update request to the user terminal after receiving the joint location update request, if the user terminal receives The result of the response is that only the tracking area update of the LTE network is allowed to be identified. Then, the 2G/3G network is searched again, the registration process is initiated to the newly searched 2G/3G network, and the voice service and the data service are enjoyed by the successfully registered 2G/3G network.
  • the present invention forcibly switches the user terminal to the 2G/3G network and implements the voice service and the data service through the 2G/3G network when the user terminal cannot implement the joint location update.
  • FIG. 6 is a schematic structural diagram of a device for accessing a network by a terminal according to another embodiment of the present invention, where the device includes at least:
  • the joint registration request sending module 410 is configured to search for an LTE network, and send a joint registration request to the searched target LTE network.
  • the LTE network covers the 2G/3G network at the same time.
  • the joint registration is a user terminal (UE) simultaneously registered to the LTE network and the 2G/3G network. It is a necessary process for the user terminal (UE) to register in the network before the actual service.
  • the user can receive the service from the network only after the registration is successful. (The emergency call does not require the registration process, and the emergency call is actually applied. It is not recognized as a service), and the network can also obtain contact with the UE through paging.
  • the user terminal When the user performs the power-on operation, the user terminal (UE) searches for the current location and the surrounding LTE (Long Term Evolution) long-term evolution cell when the user terminal receives the power-on command to complete the power-on, or enters the network service area for the first time.
  • LTE Long Term Evolution
  • Internet signal In the searched multiple LTE cell networks, one LTE cell network with the best signal strength is selected as the target LTE cell network, and a joint registration request is sent to the target LTE cell network.
  • the first response result receiving module 420 is configured to receive a response result sent by the searched target LTE network for the joint registration request.
  • the target LTE cell network after receiving the joint registration request sent by the UE, the target LTE cell network sends a request response result to the UE, and then the UE receives a request response result sent by the target LTE cell network.
  • the first registration initiating module 430 is configured to search for a 2G/3G network to the searched 2G/ when the result of the response to the joint registration request sent by the searched one target LTE network is that only non-joint registration is allowed.
  • the 3G network initiates the registration process.
  • the UE receives the request response result sent by the target LTE cell network as an EPS (Evolved packet switch) ONLY, it indicates that only the UE is allowed to register the LTE cell network, but cannot simultaneously register. To the LTE cell network and the 2G/3G network. Then the UE searches for a surrounding 2G/3G cell network and initiates a registration procedure to the searched 2G/3G cell network.
  • EPS evolved packet switch
  • the device further includes a network using module 440, configured to enjoy the voice service and the data service by using the successfully registered 2G/3G network.
  • a network using module 440 configured to enjoy the voice service and the data service by using the successfully registered 2G/3G network.
  • the UE resides on the 2G/3G network, and enjoys the voice service and the data service by using the successfully registered 2G/3G cell network.
  • the device further includes: a booting module 450, configured to receive a booting command of the terminal, and trigger the joint registration request sending module to periodically search for the LTE network after being powered on.
  • a booting module 450 configured to receive a booting command of the terminal, and trigger the joint registration request sending module to periodically search for the LTE network after being powered on.
  • the device further includes:
  • the detecting module 510 is configured to detect that the terminal leaves the cell where the searched target LTE network is located.
  • the coverage of the wireless network is limited due to energy, and thus the coverage of the network is identified by the location.
  • the TA trace area
  • the 2G/3G network is identified by the LA (Location Area).
  • the terminal accepts the service of the same wireless cell network, and does not need to perform the TA update, because when the terminal is paged, the mobile switching center searches all the cells in the location area of the terminal. To reduce frequent interaction with the network.
  • the UE moves and enters the TA area that is not in the TA list that it is registered, it will be served by other wireless cells. At this time, the UE needs to initiate an LA update procedure to the LTE network, so that the network knows the location of the terminal. At the same time, the terminal needs a periodic LA update process in order to maintain close contact with the network side.
  • the detecting module 510 is specifically configured to: obtain a tracking area identifier to which the first LTE network of the plurality of LTE networks that are re-searched belongs, and find, in the preset tracking area identifier list, whether there is more than the re-searched
  • the tracking area identifiers to which the first LTE network belongs in the LTE network match the tracking area identifiers, wherein the preset tracking area identifier list is the plurality of searched ones saved when searching for the LTE network before re-searching
  • the tracking area identifier of the LTE network if there is no tracking area identifier matching the tracking area identifier of the first LTE network in the re-searched multiple LTE networks in the preset tracking area identifier list, triggering
  • the joint location update request sending module 520 sends a joint location update request to the first LTE network of the plurality of LTE networks that are re-searched.
  • the joint location update request sending module 520 is configured to send a joint location update request to the re-searched first LTE network, where the joint location includes a tracking area for identifying the LTE network and a location area for identifying the 2G/3G network.
  • the joint location update includes a common update for identifying the tracking area TA of the LTE network and the location area LA for identifying the 2G/3G network.
  • the LTE network is re-searched, and the joint location is sent to one target LTE cell (the first LTE cell network) of the plurality of LTE cell networks obtained by the search.
  • Update request If the TA update can be implemented, the UE can enjoy the service provided by the LTE network. If the LA update can be implemented, the UE can enjoy the service provided by the 2G/3G network.
  • the second response result receiving module 530 is configured to receive a response result sent by the first LTE network of the re-searched multiple LTE networks for the joint location update request.
  • the UE sends a request response result to the UE, and then the UE receives the request response result sent by the first LTE cell network.
  • the second registration initiation module 540 is configured to re-search the 2G/3G network and initiate a registration request to the re-searched 2G/3G network if the response result is that only the tracking area update of the LTE network is allowed to be identified.
  • the UE when the UE receives the request response result sent by the first LTE cell network to allow only the tracking area TA of the LTE network to be updated, the joint location update cannot be implemented, and the UE cannot receive the 2G/3G.
  • the services provided by the network At this time, the 2G/3G network signal covered by the current location is re-searched, and the registration process is initiated to the newly searched 2G/3G network.
  • the UE resides on the 2G/3G network and enjoys voice services and data services using the successfully registered 2G/3G network.
  • the re-searching for the LTE network and obtaining multiple LTE networks that are searched again;
  • the method further includes:
  • the joint location update request sending module 520 is further configured to send a joint location update request to the second LTE network of the re-searched multiple LTE networks, where the re-searched multiple LTE networks are received.
  • a joint location update procedure is initiated to the second LTE network of the re-searched multiple LTE networks.
  • the user terminal When the user terminal is powered on or the network is used for the first time, the user terminal searches for the LTE network, and sends a joint registration request to the searched target LTE network; after the target LTE network receives the request sent by the user terminal, The user terminal sends a request response result; if the response result received by the user terminal is that only non-joint registration is allowed, the 2G/3G network is searched, the registration process is initiated to the searched 2G/3G network, and the registration is successful. 2G/3G networks enjoy voice and data services. When the user terminal re-searches for the LTE network and detects that the user terminal leaves the cell where the searched target LTE network is located, sends the identifier to the first LTE network that is searched again.
  • Identifying a tracking area of the LTE network and a joint location update request for identifying a location area of the 2G/3G network and the first LTE network sends a response to the joint location update request to the user terminal after receiving the joint location update request
  • the 2G/3G network is re-searched, the registration process is initiated to the re-searched 2G/3G network, and the successfully registered 2G is used.
  • the /3G network enjoys voice and data services.
  • the terminal in the overlapping coverage area of the LTE network and the 2G/3G network, if the user terminal cannot implement the joint registration of the LTE network and the 2G/3G network, or the joint update of the tracking area and the location area cannot be implemented, the terminal cannot initiate normally. The call cannot receive the call, and the user cannot use the voice service normally.
  • the present invention cannot implement the joint registration of the LTE network and the 2G/3G network or the joint update of the tracking area and the location area. Force the user terminal to switch to the 2G/3G network and implement voice and data services through the 2G/3G network.
  • the storage medium may be a magnetic disk, an optical disk, a read-only memory (ROM), or a random access memory (RAM).

Abstract

本发明实施例公开了一种终端接入网络的方法，所述方法包括：搜索LTE网络，向搜索到的一个目标LTE网络发送联合注册请求；接收所述搜索到的一个目标LTE网络发送的针对所述联合注册请求的响应结果；若所述搜索到的一个目标LTE网络发送的针对所述联合注册请求的响应结果为只允许非联合注册，则搜索2G/3G网络，向搜索到的2G/3G网络发起注册流程。本发明还公开了一种终端接入网络的装置。采用本发明，在LTE网络与2G/3G网络重叠覆盖的区域，当终端不能实现联合注册或联合位置更新时，强制终端切换到2G/3G网络，使用2G/3G网络享受数据业务和语音业务。

Description

一种终端接入网络的方法及装置
本申请要求于2016年01月29日提交中国专利局，申请号为201610064669.6、发明名称为“一种终端接入网络的方法及装置”的中国专利申请的优先权，其全部内容通过引用结合在本申请中。
技术领域
本发明涉及通信技术领域，尤其涉及一种终端接入网络的方法及装置。
背景技术
LTE(英文：Long Term Evolution，中文：通用移动通信技术的长期演进)的实现目标是提供更好的数据业务，但却只实现了PS域(数据域)，而没有实现CS域(语音域)。为了支持语音业务，3GPP(英文：3rd Generation Partnership Project，中文：第三代合作伙伴计划)提出了CSFB(英文：Circuit Switched Fallback，中文：电路域回落)技术，即在2G/3G无线通信网络和LTE无线通信网络重叠部署的区域，采用2G/3G无线通信网络提供语音业务，LTE无线通信网络提供数据业务。当终端驻留在LTE网络时，若用户发起或接收语音呼叫，则终端从LTE网络回落到2G/3G网络，由2G/3G网络的语音域来提供语音业务服务，语音业务结束后返回LTE网络驻留。
而对于CSFB语音解决方案，若终端没有同时注册到LTE网络和2G/3G网络上，或者没有实现LTE网络和2G/3G网络的联合位置更新而使终端不能接收到2G/3G网络的服务时，终端不能正常发起呼叫，也不能接收呼叫，导致用户不能正常使用语音业务。
发明内容
本发明实施例所要解决的技术问题在于，提供一种终端接入网络的方法及装置，在LTE网络与2G/3G网络重叠覆盖的区域，当终端不能实现联合注册或联合位置更新时，强制终端切换到2G/3G网络，使用2G/3G网络享受数据 业务和语音业务。
为了解决上述技术问题，本发明实施例提供了一种终端接入网络的方法，所述方法包括：
搜索LTE网络，向搜索到的一个目标LTE网络发送联合注册请求；
接收所述搜索到的一个目标LTE网络发送的针对所述联合注册请求的响应结果；
若所述搜索到的一个目标LTE网络发送的针对所述联合注册请求的响应结果为只允许非联合注册，则搜索2G/3G网络，向搜索到的2G/3G网络发起注册流程。
相应地，本发明实施例还提供了一种终端接入网络的装置，所述装置包括：
联合注册请求发送模块，用于搜索LTE网络，向搜索到的一个目标LTE网络发送联合注册请求；
第一响应结果接收模块，用于接收所述搜索到的一个目标LTE网络发送的针对所述联合注册请求的响应结果；
第一注册发起模块，用于若所述搜索到的一个目标LTE网络发送的针对所述联合注册请求的响应结果为只允许非联合注册，则搜索2G/3G网络，向搜索到的2G/3G网络发起注册流程。
实施本发明实施例，具有如下有益效果：在用户终端开机或初次使用网络时，用户终端搜索LTE网络，并向搜索到的一个目标LTE网络发送联合注册请求；在所述目标LTE网络接收到所述用户终端发送的请求后，向所述用户终端发送请求响应结果；若所述用户终端接收到的响应结果为只允许非联合注册，则搜索2G/3G网络，向搜索到的2G/3G网络发起注册流程，并使用注册成功的2G/3G网络享受语音业务和数据业务。现有技术中，在LTE网络及2G/3G网络的重叠覆盖区域，若用户终端不能实现LTE网络及2G/3G网络的联合注册时，终端不能正常发起呼叫，也不能接收呼叫，导致用户不能正常使用语音业务，与现有技术相比，本发明在用户终端不能实现LTE网络及2G/3G网络的联合注册时，强制用户终端切换到2G/3G网络，通过2G/3G网络实现语音业务和数据业务。
附图说明
为了更清楚地说明本发明实施例或现有技术中的技术方案，下面将对实施例或现有技术描述中所需要使用的附图作简单地介绍，显而易见地，下面描述中的附图仅仅是本发明的一些实施例，对于本领域普通技术人员来讲，在不付出创造性劳动的前提下，还可以根据这些附图获得其他的附图。
图1是本发明实施例中的一种终端接入网络的方法的流程示意图；
图2是本发明另一实施例中一种终端接入网络的方法的流程示意图；
图3是本发明另一实施例中一种终端接入网络的方法的流程示意图；
图4是本发明实施例中的一种终端接入网络的装置的结构示意图；
图5是本发明另一实施例中的一种终端接入网络的装置的结构示意图；
图6是本发明另一实施例中的一种终端接入网络的装置的结构示意图。
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。
本发明的说明书和权利要求书及上述附图中的术语“第一”、“第二”、“第三”、“第四”等是用于区别不同对象，而不是用于描述特定顺序。此外，术语“包括”和“具有”以及它们任何变形，意图在于覆盖不排他的包含。例如包含了一系列步骤或单元的过程、方法、系统、产品或设备没有限定于已列出的步骤或单元，而是可选地还包括没有列出的步骤或单元，或可选地还包括对于这些过程、方法、产品或设备固有的其他步骤或单元。
本发明实施例中提及的终端接入网络的方法的执行依赖于计算机程序，可运行于冯若依曼体系的计算机系统之上。该计算机程序可集成在应用中，也可作为独立的工具类应用运行。该计算机系统可以是个人电脑、平板电脑、笔记本电脑、手机、智能手机等终端设备。
以下分别进行详细说明。
图1是本发明实施例中一种终端接入网络的方法的流程示意图，如图所示所述方法至少包括：
步骤S101，搜索LTE网络，向搜索到的一个目标LTE网络发送联合注册请求。
具体的，所述LTE网络同时覆盖了2G/3G网络。所述联合注册为用户终端(UE)同时注册到LTE网络及2G/3G网络。用户终端(UE)进行实际业务前的在网络中注册过程，是一个必要的过程，用户只有在注册成功后才可以接收来自网络的服务，紧急呼叫则不需要注册过程，紧急呼叫在实际应用中不被认可是一种服务，同时网络也可以通过寻呼来取得和UE的联络。
当用户进行开机操作，用户终端(UE)在接收开机指令完成开机时，或初次进入网络服务区时，用户终端搜索当前位置及周围的LTE(Long Term Evolution，通用移动通信技术的长期演进)小区网络信号。在搜索到的多个LTE小区网络中，选择一个信号强度最好的LTE小区网络作为目标LTE小区网络，并向所述目标LTE小区网络发送联合注册请求。
步骤S102，接收所述搜索到的一个目标LTE网络发送的针对所述联合注册请求的响应结果。
具体的，在所述目标LTE小区网络接收到所述UE发送的联合注册请求后，向所述UE发送请求响应结果，然后UE接收所述目标LTE小区网络发送的请求响应结果。
步骤S103，若所述搜索到的一个目标LTE网络发送的针对所述联合注册请求的响应结果为只允许非联合注册，则搜索2G/3G网络，向搜索到的2G/3G网络发起注册流程。
具体的，若所述UE接收到所述目标LTE小区网络发送的请求响应结果为EPS(Evolved packet switch，增强的分组域)ONLY，表明只允许UE注册所述LTE小区网络，而不能实现同时注册到所述LTE小区网络及2G/3G网络，则所述UE搜索周围2G/3G小区网络，并向搜索到的2G/3G小区网络发起注册流程。若注册成功，则UE驻留在2G/3G网络，并使用注册成功的2G/3G小区网络享受语音业务和数据业务。
可选的，在UE驻留在2G/3G网络之后，继续向搜索到的其他LTE小区 网络发送联合注册请求，若有LTE小区网络允许联合注册，则UE向所述允许联合注册的LTE小区发起联合注册流程，在注册成功后，驻留在LTE小区网络，使用LTE小区网络享受数据业务，当需要完成语音业务时，回落到2G/3G网络，语音业务结束后，再重新驻留LTE网络。
本发明在用户终端开机或初次使用网络时，用户终端搜索LTE网络，并向搜索到的一个目标LTE网络发送联合注册请求；在所述目标LTE网络接收到所述用户终端发送的请求后，向所述用户终端发送请求响应结果；若所述用户终端接收到的响应结果为只允许非联合注册，则搜索2G/3G网络，向搜索到的2G/3G网络发起注册流程，并使用注册成功的2G/3G网络享受语音业务和数据业务。现有技术中，在LTE网络及2G/3G网络的重叠覆盖区域，若用户终端不能实现LTE网络及2G/3G网络的联合注册时，终端不能正常发起呼叫，也不能接收呼叫，导致用户不能正常使用语音业务，与现有技术相比，本发明在用户终端不能实现LTE网络及2G/3G网络的联合注册时，强制用户终端切换到2G/3G网络，通过2G/3G网络实现语音业务和数据业务。
图2是本发明另一实施例中一种终端接入网络的方法的流程示意图，如图所示所述方法至少包括：
步骤S201，检测到终端离开所述搜索到的目标LTE网络所在的小区。
具体的，无线网络的覆盖由于能量的原因，覆盖范围有限，因此通过位置标识网络的覆盖范围。对于LTE小区网络，通过TA(trace area，跟踪区域)标识，而2G/3G网络则用LA(Location Area，位置区域)标识。在同一个TA或者LA范围内，终端接受同一个无线小区网络的服务，不需要执行TA更新，是由于当寻呼终端时，移动交换中心就在该终端的位置区中的所有小区进行搜索，以减少与网络的频繁交互。
如果UE发生了移动，而进入不在其所注册的TA列表中的TA区域时，则会由其他的无线小区来服务，此时，UE需要向LTE网络发起LA更新过程，以便网络知道终端的位置，同时终端为了和网络侧保持紧密联系，需要周期性LA更新过程。
获取重新搜索到的多个LTE网络中的第一LTE网络所属的跟踪区标识， 在预设的跟踪区标识列表中查找是否存在与所述重新搜索到的多个LTE网络中的第一LTE网络所属的跟踪区标识相匹配的跟踪区标识，其中，所述预设的跟踪区标识列表为重新搜索前上一次搜索LTE网络时所保存的搜索到的多个LTE网络的跟踪区标识，若在预设的跟踪区标识列表中不存在与所述重新搜索到的多个LTE网络中的第一LTE网络所属的跟踪区标识相匹配的跟踪区标识，则执行所述向重新搜索到的多个LTE网络中的第一LTE网络发送联合位置更新请求的步骤。
步骤S202，向重新搜索到的第一LTE网络发送联合位置更新请求，所述联合位置包括用于标识LTE网络的跟踪区域和用于标识2G/3G网络的位置区域。具体的，所述联合位置更新包括用于标识LTE网络的跟踪区域TA和用于标识2G/3G网络的位置区域LA的共同更新。当UE离开之前注册的LTE小区网络并进入到一个新的LTE小区网络时，重新搜索LTE网络，并向搜索得到的多个LTE小区网络中一个目标LTE小区(第一LTE小区网络)发送联合位置更新请求。若能实现TA更新，则所述UE可以享受LTE网络提供的服务，若能实现LA更新，则所述UE可以享受2G/3G网络提供的服务。
步骤S203，接收所述重新搜索到的多个LTE网络中的第一LTE网络发送的针对所述联合位置更新请求的响应结果。
具体的，在所述第一LTE小区网络接收到所述UE发送的联合位置更新请求后，向所述UE发送请求响应结果，然后UE接收所述第一LTE小区网络发送的请求响应结果。
步骤S204，若所述响应结果为只允许标识LTE网络的跟踪区域更新，则重新搜索2G/3G网络，向重新搜索到的2G/3G网络发起注册流程。
具体的，在所述UE接收到所述第一LTE小区网络发送的请求响应结果为只允许标识LTE网络的跟踪区域TA更新时，不能实现联合位置更新，则所述UE不能接收到2G/3G网络提供的服务。此时重新搜索当前位置所覆盖的2G/3G网络信号，并向重新搜索到的2G/3G网络发起注册流程。
可选的，UE驻留在2G/3G网络，并使用注册成功的2G/3G网络享受语音业务和数据业务。
可选的，向所述重新搜索到的多个LTE网络中的第二LTE网络发送联合 位置更新请求，若接收到所述重新搜索到的多个LTE网络中的第二LTE网络针对所述联合位置更新请求的响应结果为允许联合位置更新，则向所述重新搜索到的多个LTE网络中的第二LTE网络发起联合位置更新流程。
具体的，在所述UE驻留在2G/3G网络后，继续向重新搜索得到的多个LTE小区网络中的第二LTE小区网络发送联合位置更新请求，若接收到所述第二LTE网络针对所述联合位置更新请求的响应结果为允许联合位置更新，则UE向所述第二LTE网络发起注册流程，并驻留在所述LTE网络，使用LTE网络享受数据业务，使用2G/3G网络享受语音业务。若接收到所述第二LTE网络针对所述联合位置更新请求的响应结果为只允许标识LTE网络的跟踪区域更新，则继续驻留在所述2G/3G网络。
本发明当用户终端重新搜索LTE网络并检测到用户终端离开所述搜索到的目标LTE网络所在的小区时，向重新搜索到的第一LTE网络发送用于标识LTE网络的跟踪区域和用于标识2G/3G网络的位置区域的联合位置更新请求，所述第一LTE网络接收到所述联合位置更新请求后向所述用户终端发送联合位置更新请求的响应结果，若所述用户终端接收到的响应结果为只允许标识LTE网络的跟踪区域更新，则重新搜索2G/3G网络，向重新搜索到的2G/3G网络发起注册流程，并使用注册成功的2G/3G网络享受语音业务和数据业务。现有技术中，在用户终端发生移动并离开当前LTE小区后进入一个新的LTE小区时，若用户终端不能实现跟踪区域及位置区域的联合位置更新时，终端不能正常发起呼叫，也不能接收呼叫，导致用户不能正常使用语音业务，与现有技术相比，本发明在用户终端不能实现联合位置更新时，强制用户终端切换到2G/3G网络，通过2G/3G网络实现语音业务和数据业务。
图3是本发明另一实施例中一种终端接入网络的方法的流程示意图，如图所示所述方法至少包括：
步骤S301，搜索LTE网络，向搜索到的一个目标LTE网络发送联合注册请求。
具体的，所述LTE网络同时覆盖了2G/3G网络。所述联合注册为用户终端(UE)同时注册到LTE网络及2G/3G网络。用户终端(UE)进行实际业 务前的在网络中注册过程，是一个必要的过程，用户只有在注册成功后才可以接收来自网络的服务，(紧急呼叫则不需要注册过程，紧急呼叫在实际应用中不被认可是一种服务)，同时网络也可以通过寻呼来取得和UE的联络。
当用户进行开机操作，用户终端(UE)在接收开机指令完成开机时，或初次进入网络服务区时，用户终端搜索当前位置及周围的LTE(Long Term Evolution，通用移动通信技术的长期演进)小区网络信号。在搜索到的多个LTE小区网络中，选择一个信号强度最好的LTE小区网络作为目标LTE小区网络，并向所述目标LTE小区网络发送联合注册请求。
步骤S302，接收所述搜索到的一个目标LTE网络发送的针对所述联合注册请求的响应结果。
具体的，在所述目标LTE小区网络接收到所述UE发送的联合注册请求后，向所述UE发送请求响应结果，然后UE接收所述目标LTE小区网络发送的请求响应结果。
步骤S303，若所述搜索到的一个目标LTE网络发送的针对所述联合注册请求的响应结果为只允许非联合注册，则搜索2G/3G网络，向搜索到的2G/3G网络发起注册流程。
具体的，若所述UE接收到所述目标LTE小区网络发送的请求响应结果为EPS(Evolved packet switch，增强的分组域)ONLY，表明只允许UE注册所述LTE小区网络，而不能实现同时注册到所述LTE小区网络及2G/3G网络。则所述UE搜索周围2G/3G小区网络，并向搜索到的2G/3G小区网络发起注册流程。若注册成功，则UE驻留在2G/3G网络，并使用注册成功的2G/3G小区网络享受语音业务和数据业务。
可选的，在UE驻留在2G/3G网络之后，继续向搜索到的其他LTE小区网络发送联合注册请求，若有LTE小区网络允许联合注册，则UE向所述允许联合注册的LTE小区发起联合注册流程，在注册成功后，驻留在LTE小区网络，使用LTE小区网络享受数据业务，当需要完成语音业务时，回落到2G/3G网络，语音业务结束后，再重新驻留LTE网络
步骤S304，检测到终端离开所述搜索到的目标LTE网络所在的小区。
具体的，无线网络的覆盖由于能量的原因，覆盖范围有限，因此通过位置 标识网络的覆盖范围。对于LTE小区网络，通过TA(trace area，跟踪区域)标识，而2G/3G网络则用LA(Location Area，位置区域)标识。在同一个TA或者LA范围内，终端接受同一个无线小区网络的服务，不需要执行TA更新，是由于当寻呼终端时，移动交换中心就在该终端的位置区中的所有小区进行搜索，以减少与网络的频繁交互。
如果UE发生了移动，而进入不在其所注册的TA列表中的TA区域时，则会由其他的无线小区来服务，此时，UE需要向LTE网络发起LA更新过程，以便网络知道终端的位置区，同时终端为了和网络侧保持紧密联系，需要周期性LA更新过程。获取重新搜索到的多个LTE网络中的第一LTE网络所属的跟踪区标识，在预设的跟踪区标识列表中查找是否存在与所述重新搜索到的多个LTE网络中的第一LTE网络所属的跟踪区标识相匹配的跟踪区标识，其中，所述预设的跟踪区标识列表为重新搜索前上一次搜索LTE网络时所保存的搜索到的多个LTE网络的跟踪区标识，若在预设的跟踪区标识列表中不存在与所述重新搜索到的多个LTE网络中的第一LTE网络所属的跟踪区标识相匹配的跟踪区标识，则执行所述向重新搜索到的多个LTE网络中的第一LTE网络发送联合位置更新请求的步骤。
步骤S305，向重新搜索到的第一LTE网络发送联合位置更新请求，所述联合位置包括用于标识LTE网络的跟踪区域和用于标识2G/3G网络的位置区域。
具体的，所述联合位置更新包括用于标识LTE网络的跟踪区域TA和用于标识2G/3G网络的位置区域LA的共同更新。当UE离开之前注册的LTE小区网络并进入到一个新的LTE小区网络时，重新搜索LTE网络，并向搜索得到的多个LTE小区网络中一个目标LTE小区(第一LTE小区网络)发送联合位置更新请求。若能实现TA更新，则所述UE可以享受LTE网络提供的服务，若能实现LA更新，则所述UE可以享受2G/3G网络提供的服务。
步骤S306，接收所述重新搜索到的多个LTE网络中的第一LTE网络发送的针对所述联合位置更新请求的响应结果。
具体的，在所述第一LTE小区网络接收到所述UE发送的联合位置更新请求后，向所述UE发送请求响应结果，然后UE接收所述第一LTE小区网络发 送的请求响应结果。
步骤S307，若所述响应结果为只允许标识LTE网络的跟踪区域更新，则重新搜索2G/3G网络，向重新搜索到的2G/3G网络发起注册流程。
具体的，在所述UE接收到所述第一LTE小区网络发送的请求响应结果为只允许标识LTE网络的跟踪区域TA更新时，不能实现联合位置更新，则所述UE不能接收到2G/3G网络提供的服务。此时重新搜索当前位置所覆盖的2G/3G网络信号，并向重新搜索到的2G/3G网络发起注册流程。
可选的，UE驻留在2G/3G网络，并使用注册成功的2G/3G网络享受语音业务和数据业务。
可选的，向所述重新搜索到的多个LTE网络中的第二LTE网络发送联合位置更新请求，若接收到所述重新搜索到的多个LTE网络中的第二LTE网络针对所述联合位置更新请求的响应结果为允许联合位置更新，则向所述重新搜索到的多个LTE网络中的第二LTE网络发起联合位置更新流程。
本发明在用户终端开机或初次使用网络时，用户终端搜索LTE网络，并向搜索到的一个目标LTE网络发送联合注册请求；在所述目标LTE网络接收到所述用户终端发送的请求后，向所述用户终端发送请求响应结果；若所述用户终端接收到的响应结果为只允许非联合注册，则搜索2G/3G网络，向搜索到的2G/3G网络发起注册流程，并使用注册成功的2G/3G网络享受语音业务和数据业务。当用户终端重新搜索LTE网络并检测到用户终端离开所述搜索到的目标LTE网络所在的小区时，向重新搜索到的第一LTE网络发送用于标识LTE网络的跟踪区域和用于标识2G/3G网络的位置区域的联合位置更新请求，所述第一LTE网络接收到所述联合位置更新请求后向所述用户终端发送联合位置更新请求的响应结果，若所述用户终端接收到的响应结果为只允许标识LTE网络的跟踪区域更新，则重新搜索2G/3G网络，向重新搜索到的2G/3G网络发起注册流程，并使用注册成功的2G/3G网络享受语音业务和数据业务。现有技术中，在LTE网络及2G/3G网络的重叠覆盖区域，若用户终端不能实现LTE网络及2G/3G网络的联合注册或者不能实现跟踪区域及位置区域的联合更新时，终端不能正常发起呼叫，也不能接收呼叫，导致用户不能正常使用语音业务，与现有技术相比，本发明在用户终端不能实现LTE网络及2G/3G 网络的联合注册或跟踪区域及位置区域的联合更新时，强制用户终端切换到2G/3G网络，通过2G/3G网络实现语音业务和数据业务。
图4是本发明实施例中一种终端接入网络的装置的组成结构示意图，如图所示所述装置至少包括：
联合注册请求发送模块410，用于搜索LTE网络，向搜索到的一个目标LTE网络发送联合注册请求。
具体的，所述LTE网络同时覆盖了2G/3G网络。所述联合注册为用户终端(UE)同时注册到LTE网络及2G/3G网络。用户终端(UE)进行实际业务前的在网络中注册过程，是一个必要的过程，用户只有在注册成功后才可以接收来自网络的服务，(紧急呼叫则不需要注册过程，紧急呼叫在实际应用中不被认可是一种服务)，同时网络也可以通过寻呼来取得和UE的联络。
当用户进行开机操作，用户终端(UE)在接收开机指令完成开机时，或初次进入网络服务区时，用户终端搜索当前位置及周围的LTE(Long Term Evolution，通用移动通信技术的长期演进)小区网络信号。在搜索到的多个LTE小区网络中，选择一个信号强度最好的LTE小区网络作为目标LTE小区网络，并向所述目标LTE小区网络发送联合注册请求。
第一响应结果接收模块420，用于接收所述搜索到的一个目标LTE网络发送的针对所述联合注册请求的响应结果。
具体的，在所述目标LTE小区网络接收到所述UE发送的联合注册请求后，向所述UE发送请求响应结果，然后UE接收所述目标LTE小区网络发送的请求响应结果。
第一注册发起模块430，用于在所述搜索到的一个目标LTE网络发送的针对所述联合注册请求的响应结果为只允许非联合注册时，搜索2G/3G网络，向搜索到的2G/3G网络发起注册流程。
具体的，若所述UE接收到所述目标LTE小区网络发送的请求响应结果为EPS(Evolved packet switch，增强的分组域)ONLY，表明只允许UE注册所述LTE小区网络，而不能实现同时注册到所述LTE小区网络及2G/3G网络。则所述UE搜索周围2G/3G小区网络，并向搜索到的2G/3G小区网络发起注 册流程。
可选的，所述装置还包括网络使用模块440，用于使用注册成功的2G/3G网络享受语音业务和数据业务。
具体的，若注册成功，则UE驻留在2G/3G网络，并使用注册成功的2G/3G小区网络享受语音业务和数据业务。
可选的，所述装置还包括：开机模块450，用于接收终端开机指令，触发所述联合注册请求发送模块开机后定时搜索LTE网络。
在用户终端开机或初次使用网络时，用户终端搜索LTE网络，并向搜索到的一个目标LTE网络发送联合注册请求；在所述目标LTE网络接收到所述用户终端发送的请求后，向所述用户终端发送请求响应结果；若所述用户终端接收到的响应结果为只允许非联合注册，则搜索2G/3G网络，向搜索到的2G/3G网络发起注册流程，并使用注册成功的2G/3G网络享受语音业务和数据业务。现有技术中，在LTE网络及2G/3G网络的重叠覆盖区域，若用户终端不能实现LTE网络及2G/3G网络的联合注册时，终端不能正常发起呼叫，也不能接收呼叫，导致用户不能正常使用语音业务，与现有技术相比，本发明在用户终端不能实现LTE网络及2G/3G网络的联合注册时，强制用户终端切换到2G/3G网络，通过2G/3G网络实现语音业务和数据业务。
图5是本发明另一实施例中一种终端接入网络的装置的组成结构示意图，如图所示所述装置至少包括：
检测模块510，用于检测到终端离开所述搜索到的目标LTE网络所在的小区。
具体的，无线网络的覆盖由于能量的原因，覆盖范围有限，因此通过位置标识网络的覆盖范围。对于LTE小区网络，通过TA(trace area，跟踪区域)标识，而2G/3G网络则用LA(Location Area，位置区域)标识。在同一个TA或者LA范围内，终端接受同一个无线小区网络的服务，不需要执行TA更新，是由于当寻呼终端时，移动交换中心就在该终端的位置区中的所有小区进行搜索，以减少与网络的频繁交互。
如果UE发生了移动，而进入不在其所注册的TA列表中的TA区域时， 则会由其他的无线小区来服务，此时，UE需要向LTE网络发起LA更新过程，以便网络知道终端的位置区，同时终端为了和网络侧保持紧密联系，需要周期性LA更新过程。
所述检测模块510具体用于：获取重新搜索到的多个LTE网络中的第一LTE网络所属的跟踪区标识，在预设的跟踪区标识列表中查找是否存在与所述重新搜索到的多个LTE网络中的第一LTE网络所属的跟踪区标识相匹配的跟踪区标识，其中，所述预设的跟踪区标识列表为重新搜索前上一次搜索LTE网络时所保存的搜索到的多个LTE网络的跟踪区标识，若在预设的跟踪区标识列表中不存在与所述重新搜索到的多个LTE网络中的第一LTE网络所属的跟踪区标识相匹配的跟踪区标识，则触发所述联合位置更新请求发送模块520向重新搜索到的多个LTE网络中的第一LTE网络发送联合位置更新请求。
联合位置更新请求发送模块520，用于向重新搜索到的第一LTE网络发送联合位置更新请求，所述联合位置包括用于标识LTE网络的跟踪区域和用于标识2G/3G网络的位置区域。
具体的，所述联合位置更新包括用于标识LTE网络的跟踪区域TA和用于标识2G/3G网络的位置区域LA的共同更新。当UE离开之前注册的LTE小区网络并进入到一个新的LTE小区网络时，重新搜索LTE网络，并向搜索得到的多个LTE小区网络中一个目标LTE小区(第一LTE小区网络)发送联合位置更新请求。若能实现TA更新，则所述UE可以享受LTE网络提供的服务，若能实现LA更新，则所述UE可以享受2G/3G网络提供的服务。
第二响应结果接收模块530，用于接收所述重新搜索到的多个LTE网络中的第一LTE网络发送的针对所述联合位置更新请求的响应结果。
具体的，在所述第一LTE小区网络接收到所述UE发送的联合位置更新请求后，向所述UE发送请求响应结果，然后UE接收所述第一LTE小区网络发送的请求响应结果。
第二注册发起模块540，用于若所述响应结果为只允许标识LTE网络的跟踪区域更新，则重新搜索2G/3G网络，向重新搜索到的2G/3G网络发起注册请求。
具体的，在所述UE接收到所述第一LTE小区网络发送的请求响应结果为 只允许标识LTE网络的跟踪区域TA更新时，不能实现联合位置更新，则所述UE不能接收到2G/3G网络提供的服务。此时重新搜索当前位置所覆盖的2G/3G网络信号，并向重新搜索到的2G/3G网络发起注册流程。
可选的，UE驻留在2G/3G网络，并使用注册成功的2G/3G网络享受语音业务和数据业务。
可选的，所述重新搜索LTE网络，得到重新搜索到的多个LTE网络；
所述重新搜索2G/3G网络之前，还包括：
所述联合位置更新请求发送模块520，还用于向所述重新搜索到的多个LTE网络中的第二LTE网络发送联合位置更新请求，在接收到所述重新搜索到的多个LTE网络中的第二LTE网络针对所述联合位置更新请求的响应结果为允许联合位置更新时，向所述重新搜索到的多个LTE网络中的第二LTE网络发起联合位置更新流程。
本发明当用户终端重新搜索LTE网络并检测到用户终端离开所述搜索到的目标LTE网络所在的小区时，向重新搜索到的第一LTE网络发送用于标识LTE网络的跟踪区域和用于标识2G/3G网络的位置区域的联合位置更新请求，所述第一LTE网络接收到所述联合位置更新请求后向所述用户终端发送联合位置更新请求的响应结果，若所述用户终端接收到的响应结果为只允许标识LTE网络的跟踪区域更新，则重新搜索2G/3G网络，向重新搜索到的2G/3G网络发起注册流程，并使用注册成功的2G/3G网络享受语音业务和数据业务。现有技术中，在用户终端发生移动并离开当前LTE小区后进入一个新的LTE小区时，若用户终端不能实现跟踪区域及位置区域的联合位置更新时，终端不能正常发起呼叫，也不能接收呼叫，导致用户不能正常使用语音业务，与现有技术相比，本发明在用户终端不能实现联合位置更新时，强制用户终端切换到2G/3G网络，通过2G/3G网络实现语音业务和数据业务。
图6是本发明另一实施例中一种终端接入网络的装置的组成结构示意图，如图所示所述装置至少包括：
联合注册请求发送模块410，用于搜索LTE网络，向搜索到的一个目标LTE网络发送联合注册请求。
具体的，所述LTE网络同时覆盖了2G/3G网络。所述联合注册为用户终端(UE)同时注册到LTE网络及2G/3G网络。用户终端(UE)进行实际业务前的在网络中注册过程，是一个必要的过程，用户只有在注册成功后才可以接收来自网络的服务，(紧急呼叫则不需要注册过程，紧急呼叫在实际应用中不被认可是一种服务)，同时网络也可以通过寻呼来取得和UE的联络。
当用户进行开机操作，用户终端(UE)在接收开机指令完成开机时，或初次进入网络服务区时，用户终端搜索当前位置及周围的LTE(Long Term Evolution，通用移动通信技术的长期演进)小区网络信号。在搜索到的多个LTE小区网络中，选择一个信号强度最好的LTE小区网络作为目标LTE小区网络，并向所述目标LTE小区网络发送联合注册请求。
第一响应结果接收模块420，用于接收所述搜索到的一个目标LTE网络发送的针对所述联合注册请求的响应结果。
具体的，在所述目标LTE小区网络接收到所述UE发送的联合注册请求后，向所述UE发送请求响应结果，然后UE接收所述目标LTE小区网络发送的请求响应结果。
第一注册发起模块430，用于在所述搜索到的一个目标LTE网络发送的针对所述联合注册请求的响应结果为只允许非联合注册时，搜索2G/3G网络，向搜索到的2G/3G网络发起注册流程。
具体的，若所述UE接收到所述目标LTE小区网络发送的请求响应结果为EPS(Evolved packet switch，增强的分组域)ONLY，表明只允许UE注册所述LTE小区网络，而不能实现同时注册到所述LTE小区网络及2G/3G网络。则所述UE搜索周围2G/3G小区网络，并向搜索到的2G/3G小区网络发起注册流程。
可选的，所述装置还包括网络使用模块440，用于使用注册成功的2G/3G网络享受语音业务和数据业务。
具体的，若注册成功，则UE驻留在2G/3G网络，并使用注册成功的2G/3G小区网络享受语音业务和数据业务。
可选的，所述装置还包括：开机模块450，用于接收终端开机指令，触发所述联合注册请求发送模块开机后定时搜索LTE网络。
可选的，所述装置还包括：
检测模块510，用于检测到终端离开所述搜索到的目标LTE网络所在的小区。
具体的，无线网络的覆盖由于能量的原因，覆盖范围有限，因此通过位置标识网络的覆盖范围。对于LTE小区网络，通过TA(trace area，跟踪区域)标识，而2G/3G网络则用LA(Location Area，位置区域)标识。在同一个TA或者LA范围内，终端接受同一个无线小区网络的服务，不需要执行TA更新，是由于当寻呼终端时，移动交换中心就在该终端的位置区中的所有小区进行搜索，以减少与网络的频繁交互。
如果UE发生了移动，而进入不在其所注册的TA列表中的TA区域时，则会由其他的无线小区来服务，此时，UE需要向LTE网络发起LA更新过程，以便网络知道终端的位置区，同时终端为了和网络侧保持紧密联系，需要周期性LA更新过程。
所述检测模块510具体用于：获取重新搜索到的多个LTE网络中的第一LTE网络所属的跟踪区标识，在预设的跟踪区标识列表中查找是否存在与所述重新搜索到的多个LTE网络中的第一LTE网络所属的跟踪区标识相匹配的跟踪区标识，其中，所述预设的跟踪区标识列表为重新搜索前上一次搜索LTE网络时所保存的搜索到的多个LTE网络的跟踪区标识，若在预设的跟踪区标识列表中不存在与所述重新搜索到的多个LTE网络中的第一LTE网络所属的跟踪区标识相匹配的跟踪区标识，则触发所述联合位置更新请求发送模块520向重新搜索到的多个LTE网络中的第一LTE网络发送联合位置更新请求。
联合位置更新请求发送模块520，用于向重新搜索到的第一LTE网络发送联合位置更新请求，所述联合位置包括用于标识LTE网络的跟踪区域和用于标识2G/3G网络的位置区域。
具体的，所述联合位置更新包括用于标识LTE网络的跟踪区域TA和用于标识2G/3G网络的位置区域LA的共同更新。当UE离开之前注册的LTE小区网络并进入到一个新的LTE小区网络时，重新搜索LTE网络，并向搜索得到的多个LTE小区网络中一个目标LTE小区(第一LTE小区网络)发送联合位置更新请求。若能实现TA更新，则所述UE可以享受LTE网络提供的服务， 若能实现LA更新，则所述UE可以享受2G/3G网络提供的服务。
第二响应结果接收模块530，用于接收所述重新搜索到的多个LTE网络中的第一LTE网络发送的针对所述联合位置更新请求的响应结果。
具体的，在所述第一LTE小区网络接收到所述UE发送的联合位置更新请求后，向所述UE发送请求响应结果，然后UE接收所述第一LTE小区网络发送的请求响应结果。
第二注册发起模块540，用于若所述响应结果为只允许标识LTE网络的跟踪区域更新，则重新搜索2G/3G网络，向重新搜索到的2G/3G网络发起注册请求。
具体的，在所述UE接收到所述第一LTE小区网络发送的请求响应结果为只允许标识LTE网络的跟踪区域TA更新时，不能实现联合位置更新，则所述UE不能接收到2G/3G网络提供的服务。此时重新搜索当前位置所覆盖的2G/3G网络信号，并向重新搜索到的2G/3G网络发起注册流程。
可选的，UE驻留在2G/3G网络，并使用注册成功的2G/3G网络享受语音业务和数据业务。
可选的，所述重新搜索LTE网络，得到重新搜索到的多个LTE网络；
所述重新搜索2G/3G网络之前，还包括：
所述联合位置更新请求发送模块520，还用于向所述重新搜索到的多个LTE网络中的第二LTE网络发送联合位置更新请求，在接收到所述重新搜索到的多个LTE网络中的第二LTE网络针对所述联合位置更新请求的响应结果为允许联合位置更新时，向所述重新搜索到的多个LTE网络中的第二LTE网络发起联合位置更新流程。
本发明在用户终端开机或初次使用网络时，用户终端搜索LTE网络，并向搜索到的一个目标LTE网络发送联合注册请求；在所述目标LTE网络接收到所述用户终端发送的请求后，向所述用户终端发送请求响应结果；若所述用户终端接收到的响应结果为只允许非联合注册，则搜索2G/3G网络，向搜索到的2G/3G网络发起注册流程，并使用注册成功的2G/3G网络享受语音业务和数据业务。当用户终端重新搜索LTE网络并检测到用户终端离开所述搜索到的目标LTE网络所在的小区时，向重新搜索到的第一LTE网络发送用于标 识LTE网络的跟踪区域和用于标识2G/3G网络的位置区域的联合位置更新请求，所述第一LTE网络接收到所述联合位置更新请求后向所述用户终端发送联合位置更新请求的响应结果，若所述用户终端接收到的响应结果为只允许标识LTE网络的跟踪区域更新，则重新搜索2G/3G网络，向重新搜索到的2G/3G网络发起注册流程，并使用注册成功的2G/3G网络享受语音业务和数据业务。现有技术中，在LTE网络及2G/3G网络的重叠覆盖区域，若用户终端不能实现LTE网络及2G/3G网络的联合注册或者不能实现跟踪区域及位置区域的联合更新时，终端不能正常发起呼叫，也不能接收呼叫，导致用户不能正常使用语音业务，与现有技术相比，本发明在用户终端不能实现LTE网络及2G/3G网络的联合注册或跟踪区域及位置区域的联合更新时，强制用户终端切换到2G/3G网络，通过2G/3G网络实现语音业务和数据业务。
本领域普通技术人员可以理解实现上述实施例方法中的全部或部分流程，是可以通过计算机程序来指令相关的硬件来完成，所述的程序可存储于一计算机可读取存储介质中，该程序在执行时，可包括如上述各方法的实施例的流程。其中，所述的存储介质可为磁碟、光盘、只读存储记忆体(Read-Only Memory，ROM)或随机存储记忆体(Random Access Memory，RAM)等。
以上所揭露的仅为本发明较佳实施例而已，当然不能以此来限定本发明之权利范围，因此依本发明权利要求所作的等同变化，仍属本发明所涵盖的范围。

Claims (12)

  1. 一种终端接入网络的方法，其特征在于，包括：
    搜索LTE网络，向搜索到的一个目标LTE网络发送联合注册请求；
    接收所述搜索到的一个目标LTE网络发送的针对所述联合注册请求的响应结果；
    若所述搜索到的一个目标LTE网络发送的针对所述联合注册请求的响应结果为只允许非联合注册，则搜索2G/3G网络，向搜索到的2G/3G网络发起注册流程。
  2. 如权利要求1所述的方法，其特征在于，所述向搜索到的2G/3G网络发起注册流程之后，还包括：
    使用注册成功的2G/3G网络享受语音业务和数据业务。
  3. 如权利要求1所述的方法，其特征在于，所述搜索LTE网络之前，还包括：
    接收终端开机指令，执行所述搜索LTE网络的步骤。
  4. 如权利要求1-3任一项所述的方法，其特征在于，所述向搜索到的2G/3G网络发起注册流程之后，还包括：
    检测到终端离开所述搜索到的目标LTE网络所在的小区；
    向重新搜索到的第一LTE网络发送联合位置更新请求，所述联合位置包括用于标识LTE网络的跟踪区域和用于标识2G/3G网络的位置区域；
    接收所述重新搜索到的多个LTE网络中的第一LTE网络发送的针对所述联合位置更新请求的响应结果；
    若所述响应结果为只允许标识LTE网络的跟踪区域更新，则重新搜索2G/3G网络，向重新搜索到的2G/3G网络发起注册流程。
  5. 如权利要求4所述的方法，其特征在于，所述重新搜索LTE网络，得 到重新搜索到的多个LTE网络；
    所述重新搜索2G/3G网络之前，还包括：
    向所述重新搜索到的多个LTE网络中的第二LTE网络发送联合位置更新请求；
    若接收到所述重新搜索到的多个LTE网络中的第二LTE网络针对所述联合位置更新请求的响应结果为允许联合位置更新，则向所述重新搜索到的多个LTE网络中的第二LTE网络发起联合位置更新流程。
  6. 如权利要求4所述的方法，其特征在于，所述检测到终端离开所述搜索到的一个目标LTE网络所在的小区包括：
    获取重新搜索到的多个LTE网络中的第一LTE网络所属的跟踪区标识，在预设的跟踪区标识列表中查找是否存在与所述重新搜索到的多个LTE网络中的第一LTE网络所属的跟踪区标识相匹配的跟踪区标识，其中，所述预设的跟踪区标识列表为重新搜索前上一次搜索LTE网络时所保存的搜索到的多个LTE网络的跟踪区标识；
    若在预设的跟踪区标识列表中不存在与所述重新搜索到的多个LTE网络中的第一LTE网络所属的跟踪区标识相匹配的跟踪区标识，则执行所述向重新搜索到的多个LTE网络中的第一LTE网络发送联合位置更新请求的步骤。
  7. 一种终端接入网络的装置，其特征在于，包括：
    联合注册请求发送模块，用于搜索LTE网络，向搜索到的一个目标LTE网络发送联合注册请求；
    第一响应结果接收模块，用于接收所述搜索到的一个目标LTE网络发送的针对所述联合注册请求的响应结果；
    第一注册发起模块，用于在所述搜索到的一个目标LTE网络发送的针对所述联合注册请求的响应结果为只允许非联合注册时，搜索2G/3G网络，向搜索到的2G/3G网络发起注册流程。
  8. 如权利要求7所述的装置，其特征在于，所述装置还包括：
    网络使用模块，用于使用注册成功的2G/3G网络享受语音业务和数据业务。
  9. 如权利要求7所述的装置，其特征在于，所述装置还包括：
    开机模块，用于接收终端的开机指令，触发所述联合注册请求发送模块开机后定时搜索LTE网络。
  10. 如权利要求7-9任一项所述的装置，其特征在于，所述装置还包括：
    检测模块，用于检测到终端离开所述搜索到的目标LTE网络所在的小区；
    联合位置更新请求发送模块，用于向重新搜索到的第一LTE网络发送联合位置更新请求，所述联合位置包括用于标识LTE网络的跟踪区域和用于标识2G/3G网络的位置区域；
    第二响应结果接收模块，用于接收所述重新搜索到的多个LTE网络中的第一LTE网络发送的针对所述联合位置更新请求的响应结果；
    第二注册发起模块，用于在所述响应结果为只允许标识LTE网络的跟踪区域更新时，重新搜索2G/3G网络，向重新搜索到的2G/3G网络发起注册流程。
  11. 如权利要求10所述的装置，其特征在于，所述重新搜索LTE网络，得到重新搜索到的多个LTE网络；
    所述重新搜索2G/3G网络之前，还包括：
    所述联合位置更新请求发送模块，还用于向所述重新搜索到的多个LTE网络中的第二LTE网络发送联合位置更新请求；
    所述联合位置更新请求发送模块，还用于在接收到所述重新搜索到的多个LTE网络中的第二LTE网络针对所述联合位置更新请求的响应结果为允许联合位置更新时，向所述重新搜索到的多个LTE网络中的第二LTE网络发起联合位置更新流程。
  12. 如权利要求10所述的装置，其特征在于，所述检测模块具体用于：
    获取重新搜索到的多个LTE网络中的第一LTE网络所属的跟踪区标识，在预设的跟踪区标识列表中查找是否存在与所述重新搜索到的多个LTE网络中的第一LTE网络所属的跟踪区标识相匹配的跟踪区标识，其中，所述预设的跟踪区标识列表为重新搜索前上一次搜索LTE网络时所保存的搜索到的多个LTE网络的跟踪区标识；当在预设的跟踪区标识列表中不存在与所述重新搜索到的多个LTE网络中的第一LTE网络所属的跟踪区标识相匹配的跟踪区标识时，执行所述向重新搜索到的多个LTE网络中的第一LTE网络发送联合位置更新请求的步骤。
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