WO2012055271A1 - 机器类型通信终端的业务触发方法和装置 - Google Patents

机器类型通信终端的业务触发方法和装置 Download PDF

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Publication number
WO2012055271A1
WO2012055271A1 PCT/CN2011/077543 CN2011077543W WO2012055271A1 WO 2012055271 A1 WO2012055271 A1 WO 2012055271A1 CN 2011077543 W CN2011077543 W CN 2011077543W WO 2012055271 A1 WO2012055271 A1 WO 2012055271A1
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Prior art keywords
communication terminal
type communication
machine type
request message
mobility management
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PCT/CN2011/077543
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English (en)
French (fr)
Inventor
李兰兰
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中兴通讯股份有限公司
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Publication of WO2012055271A1 publication Critical patent/WO2012055271A1/zh

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Classifications

    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04WWIRELESS COMMUNICATION NETWORKS
    • H04W60/00Affiliation to network, e.g. registration; Terminating affiliation with the network, e.g. de-registration
    • H04W60/04Affiliation to network, e.g. registration; Terminating affiliation with the network, e.g. de-registration using triggered events
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04WWIRELESS COMMUNICATION NETWORKS
    • H04W4/00Services specially adapted for wireless communication networks; Facilities therefor
    • H04W4/70Services for machine-to-machine communication [M2M] or machine type communication [MTC]

Definitions

  • the present invention relates to the field of communications, and in particular to a service triggering method and apparatus for a Machine Type Communication Device (MD). Background technique
  • M2M Machine to Machine (Communication), machine-to-machine (communication)
  • M2M Machine-to-machine
  • MTC Machine Type Communication
  • MD Machine-to-machine
  • the MTC device is a terminal of the MTC user, and can communicate with the MTC device and the MTC server through the PLMN network.
  • Figure 1 is a structural diagram of an MTC network in an LTE (Long Term Evolution) architecture.
  • an MTC device is a terminal device that communicates with an MTC server through an operator network.
  • the MTC user equipment (MTC UE) passes
  • the MTC server (MTC Server) is connected to the PLMN network, and the MTC server provides services for the MTC user equipment.
  • the E-UTRAN Evolved UMTS Terrestrial Radio Access Network
  • the access network the PGW (Packet Data Network Gateway) is a packet data network gateway, and the HSS (Home Subscriber Server) is a home subscriber server.
  • the non-access stratum is a protocol layer above the access layer and is used for direct communication between the terminal and the core network.
  • NAS Non-Access Stratum, Non-Access Stratum
  • EMM Evolved Packet System
  • Mobility Management EMM Status
  • EMM-DEREGISTERED EMM-Unregistered
  • EMM-REGISTERED EMM-REGISTERED
  • ECM-Registered It is reflected whether the UE (User Equipment) has been registered in the core network element MME (Mobility Management Entity); the NAS layer uses the EPS connection management (ECM) status (ECM-IDLE (ECM-Idle) or ECM-CO NECTED (ECM-Connect))
  • EPC Evolved Packet Core Network
  • a UE that is powered on For a UE that is powered on, it should first be registered to a service network.
  • the network can provide services to the UE only when the UE is legally registered.
  • the process of UE registration to the network is called attachment, and the relevant location information of the UE is included in the attach process. Capability information, etc. are registered to the associated network entity.
  • the attach procedure also establishes an "always on" connection for the UE while assigning an IP address to the UE.
  • the state of the UE is migrated from EMM-DEREGISTERED to EMM-REGISTERED, the location information of the UE is recorded in the core network, the UE context is established in the relevant node of the core network, the service is prepared for the UE, and the UE needs to perform periodic TAU (Tracking and Updating) process.
  • the 3GPP (3rd Generation Partnership Project) conference proposes that the MTC terminal is in a non-attached state when there is no service.
  • the MD MTC Device, MTC device
  • MTC device MTC Device
  • the MD MTC Device, MTC device
  • the MTC terminal can reduce the mobility management process in the network when there is no service, such as the periodic TAU process, which can reduce the number of signaling in the network and reduce the power consumption of the MTC Device. the amount.
  • the problem that the MTC terminal is often in the not attached state is that the core network element MME does not obtain the location information of the MTC device. When the service data needs to be transmitted, the MTC terminal cannot be awake through the paging process.
  • the H2H (Human to Human (Communication), mobile-to-person (communication)) mobile terminal can be in two states at the access layer: RRC (Radio Resource Control), idle state (RRC) -IDLE) and RRC connected state (RRC-CO NECTED).
  • RRC Radio Resource Control
  • RRC idle state
  • RRC-CO NECTED RRC connected state
  • the mobile terminal in the idle state implements the following two functions: on one hand, it can listen to the paging message of its camping cell, and update the cell system message according to the indication of the paging message (that is, re-read the cell system message), Or initiate a connection with the network side to transfer to the RRC connected state; on the other hand, the mobile terminal initiates and the location area update process on the network side may be triggered periodically or by an event to indicate the location area where the network side device is located. After the network side knows the location area where the terminal is located, when the mobile device needs to be paged, the cell in the corresponding location area sends a paging message.
  • the terminal when the terminal is in the RRC-IDLE state, if the downlink data needs to be received by the terminal, the network side sends a paging message to the terminal, and wakes up the terminal to receive the downlink data. Similar to the normal terminal, the MTC terminal reflects whether the terminal has an RRC connection with the base station in the RRC connection state (RRC-IDLE state or RRC-CO NECTED state) at the AS layer (Access Stratum).
  • the MTC terminal When the MTC terminal is in the not attached state, it is in the EMM-DEREGISTERED state at the NAS layer, and may be in the RRC-IDLE or RRC-CO NECTED state at the AS layer (in this case, the terminal is in the attach process, but the attach is not successful).
  • the correspondence between the NAS layer and the AS layer state can be described by using FIG. 2: As can be seen from FIG. 2, when the UE is in the not attached state, it may be in the following two states:
  • the MTC terminal can obtain the data sent by the base station. If the signaling that the MTC USER triggers the MTC Device to initiate the service can be transmitted to the MME, the MME can trigger the MTC terminal to establish a connection through the paging process. However, when the MD is in the EMM-DEREGISTERED state, it is not attached to the network, and the core network element MME does not obtain the location information of the MD. When the MME receives the triggering MTC terminal service indication sent by the MTC Server/MTC User, the MME cannot determine where the location is. Paging the MD in the area.
  • the method for triggering the MD in the prior art is to use the Cell Broadcast Service (CBS) architecture defined in the existing 3GPP TS 23.401 protocol to trigger the MTC terminal by paging the terminal by the CBC.
  • CBS Cell Broadcast Service
  • the shortcoming of this scheme is that a new network element is introduced in the MTC architecture, which causes the complexity of the network to be large. If it is possible to propose a trigger scheme for solving the MTC terminal of the not attached state based on the existing MTC network architecture, it is most desirable.
  • the MTC User can also send an MD trigger indication to the core network, and the location information of the MD is also notified to the core network. The MD pages the MD according to the location information obtained from the MTC User, but the MTC User does not always save.
  • the present invention has been made in view of the problem that the core network cannot perform service triggering on an MTC terminal in a non-attached state in the prior art.
  • a machine type communication terminal ( Machine Type Communication Device (MD) is a service triggering method and device to solve at least one of the above problems.
  • a service triggering method of a machine type communication terminal includes: a machine type communication terminal detects that it is in an unregistered state or a registered state; The unregistered state or the registered state is migrated to the pre-registration state; the mobility management entity performs service triggering on the device type communication terminal in the pre-registration state.
  • the mobility management entity stores the identification information and the location information of the device type communication terminal
  • the step of the mobility management entity performing service triggering on the device type communication terminal in the pre-registration state includes:
  • the above mobility management entity performs service triggering on the above-mentioned machine type communication terminal by using the above identification information and location information.
  • the step of the above-mentioned machine type communication terminal migrating from the unregistered state to the pre-registration state includes: the above-mentioned machine type communication terminal sends an existing attach request message or a new pre-attach request message after detecting that it is in an unregistered state.
  • the foregoing mobility management entity where the existing attach request message or the newly added pre-attach request message carries: identifier information for indicating a pre-registration state; the machine type communication terminal detects that its location changes. Thereafter, the changed location information is sent to the mobility management entity.
  • the step of the above-mentioned machine type communication terminal migrating from the above registered state to the pre-registered state includes: the above-mentioned machine type communication terminal detects that it is in the above registered state after executing the service; the above-mentioned machine type communication terminal or the above mobility management entity triggers The above-described machine type communication terminal migrates from the above registered state to the pre-registered state.
  • the step of the above-mentioned machine type communication terminal migrating from the above registered state to the pre-registration state includes: the above-mentioned machine type communication terminal transmitting an existing logout request message or a new pre-logout request message after detecting that it is in the above registered state.
  • the foregoing mobility management entity where the foregoing existing logout request message or the newly added pre-logout request message carries: identifier information for indicating a pre-registration state; and the mobility management entity deletes the bearer of the machine type communication terminal Information, and save the identification information and location information of the above-mentioned machine type communication terminal.
  • the step of the above-mentioned machine type communication terminal migrating from the above registered state to the pre-registration state includes: the above mobility management entity, after detecting that the device type communication terminal is in the above registered state, will have an existing logout request message or a new pre-added The logout request message is sent to the machine type communication terminal, where the existing logout request message or the newly added pre-logout request message carries: identifier information for indicating a pre-registration state; the mobility management entity deletes the machine type The bearer information of the communication terminal, and the identification information and the location information of the communication terminal of the above-mentioned machine type are saved.
  • the method further includes: the mobility management entity sending a first session deletion request message to the serving gateway,
  • the first session deletion request message carries the default bearer LBKLinked EPS Bearer ID of the device type communication terminal, and the connected EPS (Evolved Packet System) bearer identifier);
  • the service gateway delete corresponds to the default bearer LBI.
  • PGW Packet Data Network Gateway
  • the second session delete request message carries the above-mentioned machine type communication terminal
  • the step of the foregoing mobility management entity performing the service triggering on the device type communication terminal in the foregoing pre-registration state includes: the mobility management entity receiving the service trigger indication message, where the service trigger indication message is used to indicate that the foregoing machine type is triggered The service on the communication terminal; the mobility management entity sends the paging message to the machine type communication terminal by using the identifier information and the location information; and the machine type communication terminal sends the paging to the mobility management entity after receiving the paging message. Response response.
  • a service triggering apparatus for a machine type communication terminal comprising: a detecting unit configured to detect that a machine type communication terminal is in an unregistered state or a registered state; a unit, configured to trigger the above-mentioned machine type communication terminal to migrate from the above unregistered state or the above registered state to a pre-registered state, wherein, in the pre-registration state, the mobility management entity saves the identification information and location of the above-mentioned machine type communication terminal
  • the service triggering unit is configured to receive a service triggering indication message that is used by the mobility management entity to trigger the service of the machine type communication terminal, where the service trigger indication message is used to indicate that the service on the machine type communication terminal is triggered; The mobility management entity generates the foregoing service trigger indication message by using the foregoing identification information and location information.
  • the migrating unit includes: a first setting module, configured to add identifier information for indicating a pre-registration status to the existing attach request message, or add a pre-attach request message carrying the identifier information; And sending the existing attach request message or the newly added pre-attach request message to the mobility management entity; the detecting module is configured to detect that the location of the device type communication terminal changes; the second sending module, It is set to send the changed location information to the mobility management entity.
  • the migrating unit includes: a second setting module, configured to add identifier information for indicating a pre-registration status to the existing log-out request message, or add a pre-logout request message carrying the identifier information; And sending, to the foregoing mobility management entity, the foregoing cancellation request message or the foregoing new pre-logout request message; the deleting module is configured to delete the bearer information of the machine type communication terminal on the mobility management entity, And storing the above identification information and location information of the above-mentioned machine type communication terminal.
  • the machine type communication terminal (MD) is migrated from the unregistered state or the registered state to the pre-registered state, since in the pre-registration state, the mobility management entity (MME) saves the identification information of the machine type communication terminal and The location information, so that the MME can use the identification information and the location information to page to the MD, which solves the problem that the core network cannot trigger the service of the MTC terminal in the non-attached state in the prior art, thereby achieving the accuracy.
  • the effect of triggering the MTC terminal service is migrated from the unregistered state or the registered state to the pre-registered state, since in the pre-registration state, the mobility management entity (MME) saves the identification information of the machine type communication terminal and The location information, so that the MME can use the identification information and the location information to page to the MD, which solves the problem that the core network cannot trigger the service of the MTC terminal in the non-attached state in the prior art, thereby achieving the accuracy.
  • FIG. 1 is a schematic diagram of an LTE-based MTC network architecture according to the related art
  • FIG. 2 is a schematic diagram of a correspondence relationship between a NAS layer and an AS layer state according to the related art
  • FIG. 3 is a diagram of a machine according to an embodiment of the present invention.
  • a preferred flow chart of a service triggering method for a type communication terminal
  • FIG. 4 is a schematic diagram of state transition from EMM-DEREGISTERED to EMM-PreREGISTERED according to an embodiment of the present invention
  • FIG. 6 is a schematic diagram of state transition from EMM-REGISTERED (registered) to EMM-PreREGISTERED (pre-registration) according to an embodiment of the present invention
  • a preferred flow chart of the de-adhesion process of the embodiment of the invention
  • FIG. 4 is a schematic diagram of state transition from EMM-DEREGISTERED to EMM-PreREGISTERED according to an embodiment of the present invention
  • a preferred flow chart of the pre-attachment process of the embodiment of the invention
  • FIG. 6 is a schematic diagram of state transition from EMM-REGISTERED (registered) to EMM-
  • FIG. 8 is a preferred flow chart for triggering traffic on the MD after the pre-attachment process, according to an embodiment of the invention.
  • FIG. 10 is a service of a machine type communication terminal according to an embodiment of the present invention Preferably made of one kind of structure of the device of FIG. BEST MODE FOR CARRYING OUT THE INVENTION
  • FIG. 3 is a preferred flowchart of a service triggering method of a machine type communication terminal according to an embodiment of the present invention, which includes the following steps:
  • the machine type communication terminal detects that it is in an unregistered state or a registered state.
  • the device type communication terminal moves from the unregistered state or the registered state to a pre-registered state.
  • the mobility management entity performs service triggering on the machine type communication terminal in the pre-registration state.
  • the machine type communication terminal MD
  • the mobility management entity MME
  • the identifier information and the location information are used, so that the MME can use the identifier information and the location information to page to the MD, which solves the problem that the core network cannot trigger the service of the MTC terminal in the non-attached state in the prior art, and further The effect of accurately triggering the MTC terminal service is achieved.
  • the mobility management entity saves identification information and location information of the machine type communication terminal, where the mobility management entity refers to the machine in the pre-registration state.
  • the step of the type communication terminal performing the service triggering comprises: the mobility management entity performing service triggering on the machine type communication terminal by using the identifier information and the location information.
  • the service on the terminal is triggered in the pre-registration state by using the identifier information and the location information saved in the pre-registration state.
  • the step of the machine type communication terminal migrating from the unregistered state to the pre-registration state comprises: adding, by the machine type communication terminal, an existing attach request message or adding after detecting that the device is in an unregistered state.
  • the pre-attach request message is sent to the mobility management entity, where the existing attach request message or the newly added pre-attach request message carries: identifier information for indicating a pre-registration status; After detecting that the location of the terminal changes, the terminal sends the changed location information to the mobility management entity.
  • the existing request message to send the identification information the process is simplified, and system resources are saved.
  • the receiving end can simply separate the information.
  • the request message is used for the pre-attachment process to facilitate reception by the receiving end.
  • the MD does not periodically perform the TAU process, only when the TA (location information) of the MD changes.
  • the step of the machine type communication terminal migrating from the registered state to the pre-registration state comprises: the machine type communication terminal detecting that it is in the registered state after performing the service; the machine type communication The terminal or the mobility management entity triggers the machine type communication terminal to move from the registered state Move to the pre-registration state.
  • both the MD and the MME can trigger the migration process, which increases the flexibility of the solution of the embodiment.
  • the step of the machine type communication terminal migrating from the registered state to the pre-registration state comprises: the mobility management entity, after detecting that the machine type communication terminal is in the registered state, The logout request message or the new pre-logout request message is sent to the machine type communication terminal, where the existing logout request message or the newly added pre-logout request message carries: identifier information for indicating a pre-registration status.
  • the mobility management entity deletes bearer information of the machine type communication terminal, and saves the identification information and location information of the machine type communication terminal.
  • the step of the machine type communication terminal migrating from the registered state to the pre-registration state comprises: the machine type communication terminal transmitting an existing logout request message or new after detecting that it is in the registered state And the added pre-logout request message is sent to the mobility management entity, where the existing logout request message or the newly added pre-logout request message carries: identifier information used to indicate a pre-registration state;
  • the management entity deletes the bearer information of the machine type communication terminal, and saves the identification information and the location information of the machine type communication terminal.
  • the existing request message to send the identification information the process is simplified, and system resources are saved.
  • the newly added pre-attach request message to send the identification information the receiving end can simply separate the information.
  • the request message is used to go to the pre-attachment process, thereby facilitating reception by the receiving end; further, in the preferred embodiment, the MME retains the identification information and location information of the machine type communication terminal for subsequent use in the The paging of the MD.
  • the method further includes: the mobility management entity to the service gateway Sending a first session deletion request message, where the first session deletion request message carries a default bearer LBI of the machine type communication terminal; the service gateway deletes a default bearer and a proprietary corresponding to the default bearer LBI Carrying the information; the service gateway sends a second session deletion request message to the PGW, where the second session deletion request message carries a default bearer LBI of the machine type communication terminal; the PGW deletes the default bearer LBI Corresponding default bearer and proprietary bearer information.
  • the state transition process is refined by subsequent processing.
  • the step of the mobility management entity performing service triggering on the machine type communication terminal in the pre-registration state comprises: the mobility management entity receiving a service trigger indication message, where the service trigger indication The message is used to indicate that the service on the machine type communication terminal is triggered; the mobility management entity sends the paging message to the machine type communication terminal by using the identification information and the location information; the machine type communication terminal receives the message A paging response is sent to the mobility management entity after the paging message.
  • the triggering of the service to the MD is completed.
  • Embodiment 2 In a preferred embodiment of the present invention, the following technical solution is adopted: Define a new EMM state: EMM-PreREGISTERED state.
  • EMM-PreREGISTERED state When the MD is placed in the EMM-PreREGISTERED state in the non-attached state, the MD may be migrated from the EMM-REGISTERED state to the EMM-PreREGISTERED state or from the EMM-DEREGISTERED state to the EMM-PreREGISTERED state.
  • the core network saves the location information and identity of the MD in the EMM-PreREGISTERED state.
  • the MTC server sends a service trigger indication to the MME, and pages the MD when the MME receives the service trigger indication. Further, when the MD is in the EMM-PreREGISTERED state, the following features are obtained:
  • the MME can assign S-TMSI to the MD, save the IMSI identifier of the MD, and location area information.
  • the MD can be awakened by the MME initiating the paging procedure. Further, the MTC terminal can migrate between the three states. The migration process can use existing signaling processes.
  • pre-attachment process MD migration from EMM-DEREGISTERED state to EMM -PreREGISTERED state process is called "pre-attachment process” (as shown in Figure 4), you can add NAS layer process or reuse existing “attach” The flow “, specifically the reuse of the "attach request message”.
  • an identifier may be added in the "attach request message” to indicate that the "attach request message” is "pre-attached flow”.
  • the MME after receiving the "attach request message", the MME does not establish the bearer of the core network, but only saves the identity information and location information reported by the UE, and returns "pre-attach request success”.
  • the transition from the EMM-PreREGISTERED state to the EMM-DEREGISTERED state process is called the "de-pre-attachment process", and the NAS layer process can be added or the existing "log-off process” can be reused, specifically by multiplexing the "log-out request message".
  • the existing "PDN connection establishment process” and “PDN de-connection process” can be reused (as shown in Figure 6). ).
  • the MD sends a "PDN Connection Setup Request message" to the MME. After receiving the message, the core network element establishes a bearer in the core network.
  • the state of the MD transitions from the EMM-PreREGISTERED state to the EMM-REGISTERED state; when the UE wishes to transition from the EMM-REGISTERED state to the EMM-PreREGISTERED state, the NAS layer process can be added or the existing PDN can be multiplexed.
  • the UE/MME sends a PDN to connect request message or a new NAS layer message, and the MME/UE releases the bearer established in the core network.
  • the MME still retains part of the context information (the context information) established by the MD during the attach process.
  • the third embodiment retains a new EMM-PreREGISTERED state for the MD, and can migrate to this state when the MD is not performing services.
  • the MD can be migrated to the EMM-PreREGISTER ED state through the pre-attach request process.
  • the request process may reuse an existing attach request process or adopt a new pre-attach request process.
  • the message corresponding to the attach request process is an attach request message, and the pre-attach request process corresponds to a pre-attach request message.
  • the -DEREGISTERED state has the following characteristics:
  • the MD detects that it is in the EMM-DEREGISTERED state and automatically initiates the migration process
  • the switch can be set on the MD and triggered by the human method.
  • the state transition of the MD adopts a pre-attachment process
  • the pre-attachment request in the pre-attachment process can be as follows: 1) multiplexing the existing NAS layer Attachment process, in order to distinguish the pre-attachment process and the "attachment process" in the prior art, an identification information may be added to the "attach request" message, and the identification information may be increased by adding an "attach type" optional value.
  • MTC preAttach implementation.
  • the core network element MME can identify that the standard attach process is not based on the identifier information carried in the message, but the "pre-attach process" performs different operations than the standard attach process;
  • a new pre-attachment process, the corresponding message may be referred to as a "pre-attach request message", and the "pre-attach request message” may carry a protocol identifier, a security header type, an attach request message identifier, and an EPS attachment type.
  • the message includes the identification information of the MD, the last accessed TAI, the UE-specific DRX (Discontinuous Reception) parameter, the PDN type, the protocol configuration option, the encrypted option transmission identifier, the access type, Ka S me, NAS. All or part of the serial number;
  • e B (Evolved NodeB, evolved base station) forwards the initial UE message included in the S1AP (S1 Application Protocol, SI interface application protocol) to the MME, and simultaneously sends the selected network together
  • S1AP S1 Application Protocol, SI interface application protocol
  • ECGI Evolved NodeB, evolved base station
  • the MME sends a pre-attached receiving message to the eNB by using an initial context setup request message of the S1AP, where the MME includes a TAI list, a KSIasme, and a NAS serial number.
  • the S1AP message also needs to include part or all of the AS security context, handover restriction list information used by the UE.
  • the eNB sends an RRC connection reconfiguration message to the MD. Since the core network bearer is not established for the MD in the pre-attachment process, the DRB is not configured for the MD in the RRC connection reconfiguration process, and only the SRB is configured. In addition, the base station also needs to complete the configuration process necessary in the prior art such as the MD measurement configuration. The base station notifies the received pre-attached reception message to the MD through the RRC connection reconfiguration message.
  • the MD completes the configuration process according to the configuration request in step S5, and sends an RRC connection reconfiguration complete message to the eNB.
  • the eNB sends an initialization context response message to the MME.
  • the message includes the MME S 1 AP signaling identifier corresponding to the MD and the eNB S 1 AP signaling identifier.
  • the MD After completing the pre-attach request process, the MD sends a direct transmission message to the eNB, where the pre-attachment completion message is included.
  • the eNB forwards the pre-attach completion message to the MME by sending an uplink NAS transmission message to the MME.
  • Embodiment 4 When the MD is in the EMM-REGISTERED state, the MD implementation migrates to the EMM-PreREGI STERED state.
  • the pre-logout process can reuse an existing logout process or add a new pre-logout request process.
  • Corresponding to the logout process is a logout request message, and the pre-logout request process corresponds to a pre-logout request message.
  • the MD is in the EMM-REGISTERED state, it has the following characteristics:
  • a switch can be set on the MD, which is triggered by an artificial method.
  • the state transition of the MD uses a pre-logout process, and the pre-logout request in the pre-logout process can be as follows:
  • the core network element MME After receiving the logout request message, the core network element MME can identify the logout process that is not the standard, but the "pre-logout process" according to the logout type identification information carried in the message, and the MME performs a different operation from the standard logout process; A new de-logout process is added, and the corresponding message may be referred to as a "pre-logout request message", and the "pre-logout request message” needs to carry the MD identifier. As shown in Figure 7, the pre-logout process consists of the following steps:
  • Both Sl, MD and MME can initiate a pre-logout request process (as shown by Sla and Sib in Figure 7).
  • the MD or the MME sends a pre-logout request process to the other party.
  • the specific manner may be the foregoing two methods.
  • the MME After the MME initiates the pre-logout request process or receives the pre-logout request process initiated by the MD, the MME saves part of the context information saved on the MME. Only the location information and the identification information of the MD are left, and the information related to the bearer of the MD is deleted.
  • S2 the MME sends a session deletion request to the SGW (Serving Gateway), and the message has a default bearer LBI (Linked EPS Bearer ID). 0 After receiving the session deletion request message, the SGW deletes all defaults corresponding to the LBI. Bearer and proprietary bearer information.
  • SGW Serving Gateway
  • the SGW sends a session deletion request message to the PGW, where the message includes the default bearer LBKLinked EPS Bearer ID of the MD, and the connected EPS bearer identifier.
  • the PGW receives the session delete request message, it deletes and
  • the PGW returns a session deletion response message to the SGW, and notifies the SGW that the S5 interface bearer deletion process has been completed.
  • the SGW returns a session deletion response message to the MME, notifying the MME that the bearer deletion process of the S1-U interface has been completed.
  • the MME sends a deactivation bearer request to the e B.
  • the eNB sends an RRC connection reconfiguration message to the UE.
  • the UE sends an RRC connection reconfiguration response message to the eNB.
  • the eNB sends a deactivation bearer response to the MME.
  • the MD returns a logout response message to the MME, or the MME sends a logout response message to the MD.
  • the MD can be migrated to the EMM-preREGISTERED state when it is in the EMM-REGISTERED state or EMM-DEREGISTERED.
  • MTC server MTC server
  • the MTC server needs the MD to initiate the service, it sends a trigger indication to the network side, and the network side triggers the MD to initiate the service by paging.
  • the process of the M state transition and the initiation of the service is illustrated by this embodiment. This embodiment includes the following steps (as shown in FIG. 8 and FIG. 9):
  • the SI MD is in the EMM-REGISTERED (registered) state or the EMM-DEREGISTERED state (unregistered). Normally, the MD completes the attach process and is in the EMM-REGISTERED state. At this time, the MD can process a certain service; when the MD is powered on but does not initiate the attach process, it will be in EMM-DEREGISTERED, for example, there is no SIM (Subscriber Identity Module, Customer identification module) card, or the attachment process is in progress, but has not been successful; S2, the MD is triggered to initiate a pre-logout process or a pre-attach process, and the triggering process may refer to the pre-logout process or the pre-attach process described in Embodiment 3 and Embodiment 4;
  • MD has a state transition, and is migrated from the EMM-REGISTERED state or the EMM-DEREGIS TERED state to the EMM-preREGISTERED state. In this state, the paging message sent by the network side can be received.
  • the MTC server may send a trigger indication to the MME through the MTC server, and the service request message may be sent to the MME through a network element such as a PGW or a Home Subscriber Server (HSS).
  • the service trigger indication can be sent to the MME through signaling of the application layer.
  • the MME may save the location information and the identifier information of the MD in the MME when the state transition of the MD is in the EMM-preREGISTERED state, and the MME may initiate the pair according to the foregoing.
  • the paging process of the MD
  • FIG. 10 is a schematic structural diagram of a service triggering apparatus of a machine type communication terminal according to an embodiment of the present invention, which includes: a detecting unit 1002 configured to detect that a machine type communication terminal is in an unregistered state or has been registered a migration unit 1004, configured to trigger the migration of the machine type communication terminal from the unregistered state or the registered state to a pre-registration state, wherein, in the pre-registration state, the mobility management entity saves the
  • the service type triggering unit 1006 is configured to receive a service triggering indication message that is used by the mobility management entity to trigger the service of the machine type communication terminal, where the service trigger indication message is used by And indicating to trigger the service on the machine type communication terminal; the mobility management entity generates the service trigger indication message by using the identification information and the location information.
  • the machine type communication terminal (MD) is migrated from the unregistered state or the registered state to the pre-registered state, since in the pre-registration state, the mobility management entity (MME) saves the machine type communication terminal The identification information and the location information, so that the MME can use the identification information and the location information to page to the MD, which solves the problem that the core network in the prior art cannot page the MTC terminal in the non-attached state. In turn, the effect of accurately triggering the MTC terminal service is achieved.
  • the migrating unit 1004 may further include: a first setting module, configured to add identifier information for indicating a pre-registration state to an existing attach request message, or add a pre-loaded identifier information
  • An attaching request message configured to send the existing attach request message or the newly added pre-attach request message to the mobility management entity; and the detecting module is configured to detect the machine type The location of the communication terminal changes; the second sending module is configured to send the changed location information to the mobility management entity.
  • the existing request message to send the identification information the process is simplified, and system resources are saved.
  • the newly added pre-attach request message to send the identification information the receiving end can simply separate the information.
  • the request message is used for the pre-attachment process to facilitate reception by the receiving end.
  • the MD does not periodically perform the TAU process, only when the TA (location information) of the MD changes.
  • the updated location information is reported to the MME, thereby simplifying the process.
  • the step of the machine type communication terminal migrating from the registered state to the pre-registration state comprises: the machine type communication terminal detecting that it is in the registered state after performing the service; the machine type communication The terminal or the mobility management entity triggers the migration of the machine type communication terminal from the registered state to a pre-registration state.
  • both the MD and the MME can trigger the migration process, which increases the flexibility of the solution of the embodiment.
  • the migrating unit 1004 may further include: a second setting module, configured to add identifier information for indicating a pre-registration status to the existing log-out request message, or add a pre-loaded identifier information
  • the third sending module is configured to send the existing logout request message or the newly added pre-logout request message to the mobility management entity; and the deleting module is configured to delete the mobility management Carrying information of the machine type communication terminal on the entity, and storing the identification information and location information of the machine type communication terminal.
  • the existing request message to send the identification information the process is simplified, and system resources are saved.
  • the receiving end can simply separate the information.
  • the request message is used to go to the pre-attachment process, thereby facilitating reception by the receiving end; further, in the preferred embodiment, the MME retains the identification information and location information of the machine type communication terminal for subsequent use in the The paging of the MD.
  • the method further includes: the mobility management entity to the service gateway Sending a first session deletion request message, where the first session deletion request message carries a default bearer LBI of the machine type communication terminal; the service gateway deletes a default bearer and a proprietary corresponding to the default bearer LBI Carrying the information; the service gateway sends a second session deletion request message to the PGW, where the second session deletion request message carries a default bearer LBI of the machine type communication terminal; the PGW deletes the default bearer LBI Corresponding default bearer and proprietary bearer information.
  • the state transition process is refined by subsequent processing.
  • the step of the mobility management entity performing service triggering on the machine type communication terminal in the pre-registration state comprises: the mobility management entity receiving a service trigger indication message, where the service trigger indication The message is used to indicate that the service on the machine type communication terminal is triggered; the mobility management entity sends the paging message to the machine type communication terminal by using the identification information and the location information; the machine type communication terminal receives the message A paging response is sent to the mobility management entity after the paging message.
  • the triggering of the service to the MD is completed.

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Abstract

本发明公开了一种机器类型通信终端的业务触发方法和装置,其中,该方法包括:机器类型通信终端检测到自身处于未注册状态或已注册状态;上述机器类型通信终端从上述未注册状态或上述已注册状态迁移至预注册状态;上述移动性管理实体在上述预注册状态下对上述机器类型通信终端进行业务触发。本发明解决了现有技术中核心网无法对处于未附着状态下的MTC终端进行业务触发的问题,进而达到了准确触发MTC终端业务的效果。

Description

机器类型通信终端的业务触发方法和装置 技术领域 本发明涉及通信领域, 具体而言, 涉及一种机器类型通信终端 (Machine Type Communication Device, 简称 MD) 的业务触发方法和装置。 背景技术
M2M (Machine to Machine (Communication), 机器对机器(通信))是上世纪九十 年代提出的概念, 是通信技术发展的重要驱动力量。简单的说, M2M就是机器的互联 网, 实现手段包括各种联网的技术。 M2M技术的目标就是使所有机器设备都具备联网 和通信的能力, 其核心理念就是 "网络一切"(Network Everything)。 M2M的通信对 象为机器对机器或者人对机器。一个或多个机器之间的数据通信定义为 MTC(Machine Type Communication, 机器类型通信), 这种情况下较少需要人机互动。 参与 MTC的 机器, 定义为 MTC设备(MTC Device, 简称为 MD)。 MTC设备是 MTC用户的终端, 可通过 PLMN网络与 MTC设备、 MTC服务器进行通信。 图 1是 LTE (Long Term Evolution, 长期演进) 架构下的 MTC网络结构图, 如图 1所示, MTC设备是通过运 营商网络和 MTC服务器进行通讯的终端设备, MTC用户设备 (MTC UE)通过 MTC 服务器 (MTC Server) 和 PLMN网络相连, MTC服务器为 MTC用户设备提供服务, 其中, E-UTRAN (Evolved UMTS Terrestrial Radio Access Network) 为演进的 UMTS (Universal Mobile Telecommunications System, 通用移动通信系统)陆地无线接入网, PGW (Packet Data Network Gateway) 为分组数据网络网关, HSS (Home Subscriber Server) 为归属用户服务器。 非接入层是在接入层之上的协议层, 用于终端和核心网直接通信。 NAS (Non-Access Stratum, 非接入层) 用 EPS (Evolved Packet System, 演进分组系统) 移动性管理 ( EMM ) 状态 ( EMM-DEREGISTERED ( EMM-未注册) 或 EMM-REGISTERED (EMM-已注册)) 反映 UE (User Equipment, 用户设备) 是否已 经在核心网网元 MME (Mobility Management Entity, 移动性管理实体) 注册; NAS 层用 EPS连接管理 (ECM) 状态 (ECM-IDLE (ECM-空闲) 或 ECM-CO NECTED (ECM-连接))反应演进型分组核心网 (EPC) 中 UE的连接特性, 也就是 UE是否有 PDN (Packet Data Network, 分组数据网) 连接。 对于一个开机使用的 UE, 首先应该 注册到一个服务网络中。 只有当 UE合法地进行了注册, 网络才能为 UE提供服务。 UE注册到网络的过程被称为附着(attachment),在附着过程中将 UE的相关位置信息、 能力信息等登记到关联的网络实体。 附着过程还为 UE建立"永远在线"的连接, 同时 为 UE 分配 IP 地址。 附着执行后, UE 的状态由 EMM-DEREGISTERED 迁移到 EMM-REGISTERED,在核心网记录 UE的位置信息, 核心网相关节点中建立 UE上下 文,为 UE提供业务做好准备,并且 UE需要执行周期性的 TAU( Tracking and Updating, 跟踪与更新) 过程。 在 MTC网络架构中, 3GPP (3rd Generation Partnership Project, 第三代合作伙伴 计划)会议提出 MTC终端在没有业务时处于非附着(not attached)状态。 这样做可以 使 MD (MTC Device, MTC设备)在没有业务时减少网络中的移动性管理流程, 比如 周期性的 TAU过程, 这样可以减少网络中的信令数量, 并且减少了 MTC Device的耗 电量。 然而, MTC终端常处于 not attached状态带来的问题就是核心网网元 MME没 有获取 MTC Device的位置信息, 有业务数据需要传输时, 无法通过 paging过程唤醒 MTC 终端。 在现有移动通信技术中, H2H (Human to Human ( Communication), 人对人 (通 信)) 移动终端在接入层可以处于两种状态: RRC (Radio Resource Control, 无线资源 控制) 空闲态 (RRC-IDLE) 和 RRC连接态 ( RRC-CO NECTED )。 处于空闲态的移 动终端实现如下两方面的功能: 一方面可以监听其驻留小区的寻呼消息, 并根据寻呼 消息的指示进行小区系统消息的更新(也就是重新读取小区系统消息), 或发起和网络 侧的连接以转入 RRC连接态; 另一方面, 可以周期性或由事件触发, 移动终端发起和 网络侧的位置区更新过程, 以指示网络侧设备其所在的位置区域。 网络侧得知终端所 在的位置区域后, 在需要对该移动设备进行寻呼时, 在相应的位置区域内的小区发送 寻呼消息。 在 LTE网络架构中, 当终端处于 RRC-IDLE态时, 如果有下行数据需要终 端接收, 网络侧会给终端发送寻呼消息, 唤醒终端接收下行数据。 和普通终端类似, MTC终端在 AS层 (Access Stratum, 接入层) 由 RRC连接状 态(RRC-IDLE状态或者 RRC-CO NECTED状态)反映终端是否和基站有 RRC连接。 当 MTC终端处于 not attached状态时, 在 NAS层处于 EMM-DEREGISTERED状 态,在 AS层可能处于 RRC-IDLE或者 RRC-CO NECTED态(这种情况是终端在 attach 过程中, 但是还没有 attach成功)。 NAS层和 AS层状态的对应关系可以用图 2描述: 从图 2中可以看出, 当 UE处于 not attached状态时可能处于以下两种状态:
EMM-DEREGISTERED (未注册) 且 RRC-IDLE ;
EMM-DEREGISTERED 且 RRC-CO NECTED; 上面这两种情况中, MTC终端都是能够获取基站发送的数据的,如果 MTC USER 触发 MTC Device发起业务的信令能够传送到 MME, 那么 MME就可以通过寻呼流程 触发 MTC终端建立连接了。但是当 MD在 EMM-DEREGISTERED状态时, 没有附着 到网络, 核心网网元 MME没有获取到 MD的位置信息, MME收到 MTC Server/MTC User发送的触发 MTC终端业务指示时, 无法确定在哪个位置区域内寻呼 MD。 在目前现有技术中触发 MD的方法是利用已有的 3GPP TS 23.401协议中定义的 Cell Broadcast Service (CBS)架构, 通过 CBC对终端的寻呼来触发 MTC终端。 但是这 个方案的缺点是在 MTC架构中引入了新的网元, 造成了网络的复杂程度较大。 如果 能够在现有 MTC网络架构的基础上提出解决 not attached态的 MTC终端的触发方案 是最理想了。 现有技术中还可以通过 MTC User给核心网发送 MD触发指示, 同时将 MD的位置信息也通知到核心网, MD根据从 MTC User获取到的位置信息寻呼 MD, 但是并不是 MTC User总保存有 MD的位置信息, 所以当 MTC User没有保存 MD的 位置信息时, 核心网无法获取 MD的位置信息, 那么也无法寻呼到 MD。 由上可知, 在现有技术中, 核心网无法获知处于未附着 (not attached) 状态下的 MTC终端的位置信息, 从而无法对这样的 MTC终端进行寻呼, 从而触发该 MTC终 端的业务。 发明内容 针对现有技术中核心网无法对处于未附着(not attached)状态下的 MTC终端进行 业务触发的问题而提出本发明, 为此, 本发明的主要目的在于提供一种机器类型通信 终端 (Machine Type Communication Device, 简称 MD) 的业务触发方法和装置, 以解 决上述问题至少之一。 为了实现上述目的, 根据本发明的一个方面, 提供了一种机器类型通信终端的业 务触发方法, 其包括: 机器类型通信终端检测到自身处于未注册状态或已注册状态; 上述机器类型通信终端从上述未注册状态或上述已注册状态迁移至预注册状态; 上述 移动性管理实体在上述预注册状态下对上述机器类型通信终端进行业务触发。 在上述预注册状态中, 上述移动性管理实体保存上述机器类型通信终端的标识信 息和位置信息, 其中, 上述移动性管理实体在上述预注册状态下对上述机器类型通信 终端进行业务触发的步骤包括: 上述移动性管理实体使用上述标识信息和位置信息对 上述机器类型通信终端进行业务触发。 上述机器类型通信终端从上述未注册状态迁移至预注册状态的步骤包括: 上述机 器类型通信终端在检测到自身处于未注册状态之后, 将已有的附着请求消息或新增的 预附着请求消息发送给上述移动性管理实体, 其中, 上述已有的附着请求消息或新增 的预附着请求消息携带有: 用于指示预注册状态的标识信息; 上述机器类型通信终端 在检测到自身的位置发生变化之后,将变化后的位置信息发送给上述移动性管理实体。 上述机器类型通信终端从上述已注册状态迁移至预注册状态的步骤包括: 上述机 器类型通信终端在执行完业务之后检测到自身处于上述已注册状态; 上述机器类型通 信终端或上述移动性管理实体触发上述机器类型通信终端从上述已注册状态迁移至预 注册状态。 上述机器类型通信终端从上述已注册状态迁移至预注册状态的步骤包括: 上述机 器类型通信终端在检测到自身处于上述已注册状态之后将已有的注销请求消息或新增 的预注销请求消息发送给上述移动性管理实体, 其中, 上述已有的注销请求消息或新 增的预注销请求消息携带有: 用于指示预注册状态的标识信息; 上述移动性管理实体 删除上述机器类型通信终端的承载信息, 并保存上述机器类型通信终端的标识信息和 位置信息。 上述机器类型通信终端从上述已注册状态迁移至预注册状态的步骤包括: 上述移 动性管理实体在检测到上述机器类型通信终端处于上述已注册状态之后将已有的注销 请求消息或新增的预注销请求消息发送给上述机器类型通信终端, 其中, 上述已有的 注销请求消息或新增的预注销请求消息携带有: 用于指示预注册状态的标识信息; 上 述移动性管理实体删除上述机器类型通信终端的承载信息, 并保存上述机器类型通信 终端的标识信息和位置信息。 在上述移动性管理实体删除上述机器类型通信终端的承载信息并保存上述机器类 型通信终端的上述标识信息和位置信息之后, 还包括: 上述移动性管理实体向服务网 关发送第一会话删除请求消息, 其中, 上述第一会话删除请求消息携带有上述机器类 型通信终端的默认承载 LBKLinked EPS Bearer ID,连接的 EPS(Evolved Packet System, 演进分组系统) 承载标识); 上述服务网关删除与上述默认承载 LBI对应的缺省承载 和专有承载信息; 上述服务网关向 PGW (Packet Data Network Gateway, 分组数据网 络网关) 发送第二会话删除请求消息, 其中, 上述第二会话删除请求消息携带有上述 机器类型通信终端的默认承载 LBI; 上述 PGW删除与上述默认承载 LBI对应的缺省 承载和专有承载信息。 上述移动性管理实体在上述预注册状态下对上述机器类型通信终端进行业务触发 的步骤包括: 上述移动性管理实体接收到业务触发指示消息, 其中, 上述业务触发指 示消息用于指示触发上述机器类型通信终端上的业务; 上述移动性管理实体使用上述 标识信息和位置信息对上述机器类型通信终端发送寻呼消息; 上述机器类型通信终端 接收到上述寻呼消息之后向上述移动性管理实体发送寻呼应答响应。 为了实现上述目的, 根据本发明的另一方面, 提供了一种机器类型通信终端的业 务触发装置, 其包括: 检测单元, 设置为检测到机器类型通信终端处于未注册状态或 已注册状态; 迁移单元, 设置为触发上述机器类型通信终端从上述未注册状态或上述 已注册状态迁移至预注册状态, 其中, 在上述预注册状态中, 移动性管理实体保存上 述机器类型通信终端的标识信息和位置信息; 业务触发单元, 设置为接收用于上述移 动性管理实体触发上述机器类型通信终端业务的业务触发指示消息, 其中, 上述业务 触发指示消息用于指示触发上述机器类型通信终端上的业务; 上述移动性管理实体使 用上述标识信息和位置信息产生上述业务触发指示消息。 上述迁移单元包括: 第一设置模块, 设置为在已有的附着请求消息中增加用于指 示预注册状态的标识信息, 或者, 新增携带有上述标识信息的预附着请求消息; 第一 发送模块, 设置为将上述已有的附着请求消息或上述新增的预附着请求消息发送给上 述移动性管理实体; 检测模块, 设置为检测到上述机器类型通信终端的位置发生变化; 第二发送模块, 设置为将变化后的位置信息发送给上述移动性管理实体。 上述迁移单元包括: 第二设置模块, 设置为在已有的注销请求消息中增加用于指 示预注册状态的标识信息, 或者, 新增携带有上述标识信息的预注销请求消息; 第三 发送模块, 设置为将上述已有的注销请求消息或上述新增的预注销请求消息发送给上 述移动性管理实体; 删除模块, 设置为删除上述移动性管理实体上的上述机器类型通 信终端的承载信息, 并保存上述机器类型通信终端的上述标识信息和位置信息。 在本发明中, 将机器类型通信终端 (MD) 从未注册状态或已注册状态迁移至预 注册状态, 由于在预注册状态中, 移动性管理实体(MME)保存机器类型通信终端的 标识信息和位置信息, 从而使得 MME可以利用标识信息和位置信息寻呼到 MD, 解 决了现有技术中核心网无法对处于未附着(not attached)状态下的 MTC终端进行业务 触发的问题, 进而达到了准确触发 MTC终端业务的效果。 本发明的其它特征和优点将在随后的说明书中阐述, 并且, 部分地从说明书中变 得显而易见, 或者通过实施本发明而了解。 本发明的目的和其他优点可通过在所写的 说明书、 权利要求书、 以及附图中所特别指出的结构来实现和获得。 附图说明 此处所说明的附图用来提供对本发明的进一步理解, 构成本申请的一部分, 本发 明的示意性实施例及其说明用于解释本发明, 并不构成对本发明的不当限定。 在附图 中: 图 1是根据相关技术的基于 LTE的 MTC网络架构的示意图; 图 2是根据相关技术的 NAS层和 AS层状态的对应关系的示意图; 图 3是根据本发明实施例的机器类型通信终端的业务触发方法的一种优选的流程 图; 图 4 是根据本发明实施例的从 EMM-DEREGISTERED (未注册) 到 EMM-PreREGISTERED (预注册) 的状态转换示意图; 图 5是根据本发明实施例的预附着过程的一种优选的流程图; 图 6 是根据本发明实施例的从 EMM-REGISTERED ( 已注册) 到 EMM-PreREGISTERED (预注册) 的状态转换示意图; 图 7是根据本发明实施例的去预附着过程的一种优选的流程图; 图 8是根据本发明实施例的在预附着过程之后的触发 MD上的业务的一种优选的 流程图; 图 9是根据本发明实施例的在去预附着过程之后的触发 MD上的业务的一种优选 的流程图; 图 10 是根据本发明实施例的机器类型通信终端的业务触发装置的一种优选的结 构图。 具体实施方式 下文中将参考附图并结合实施例来详细说明本发明。 需要说明的是, 在不冲突的 情况下, 本申请中的实施例及实施例中的特征可以相互组合。 实施例 1 图 3是根据本发明实施例的机器类型通信终端的业务触发方法的一种优选的流程 图, 其包括如下步骤:
S302, 机器类型通信终端检测到自身处于未注册状态或已注册状态;
S304, 上述机器类型通信终端从所述未注册状态或所述已注册状态迁移至预注册 状态;
S306, 上述移动性管理实体在所述预注册状态下对所述机器类型通信终端进行业 务触发。 在本优选的实施例中, 将机器类型通信终端 (MD) 从未注册状态或已注册状态 迁移至预注册状态, 由于在预注册状态中, 移动性管理实体(MME)保存机器类型通 信终端的标识信息和位置信息, 从而使得 MME可以利用标识信息和位置信息寻呼到 MD, 解决了现有技术中核心网无法对处于未附着 (not attached) 状态下的 MTC终端 进行业务触发的问题, 进而达到了准确触发 MTC终端业务的效果。 优选的, 在所述预注册状态中, 所述移动性管理实体保存所述机器类型通信终端 的标识信息和位置信息, 其中, 所述移动性管理实体在所述预注册状态下对所述机器 类型通信终端进行业务触发的步骤包括: 所述移动性管理实体使用所述标识信息和位 置信息对所述机器类型通信终端进行业务触发。 在本优选的实施例中, 通过预注册状 态下保存的标识信息和位置信息, 实现了预注册状态下触发终端上的业务。 优选的,所述机器类型通信终端从所述未注册状态迁移至预注册状态的步骤包括: 所述机器类型通信终端在检测到自身处于未注册状态之后, 将已有的附着请求消息或 新增的预附着请求消息发送给所述移动性管理实体, 其中, 所述已有的附着请求消息 或新增的预附着请求消息携带有: 用于指示预注册状态的标识信息; 所述机器类型通 信终端在检测到自身的位置发生变化之后, 将变化后的位置信息发送给所述移动性管 理实体。 在本优选的实施例中, 通过利用已有的请求消息来发送标识信息, 简化了流 程, 节省了系统资源; 通过利用新增的预附着请求消息来发送标识信息, 使得接收端 可以简单地分别出该条请求消息用于预附着过程, 从而便于接收端的接收; 此外, 在 本优选的实施例中, MD不周期性地进行 TAU流程, 只在 MD的 TA (位置信息) 发 生变化时, 才向 MME上报更新后的位置信息, 从而简化了流程。 优选的,所述机器类型通信终端从所述已注册状态迁移至预注册状态的步骤包括: 所述机器类型通信终端在执行完业务之后检测到自身处于所述已注册状态; 所述机器 类型通信终端或所述移动性管理实体触发所述机器类型通信终端从所述已注册状态迁 移至预注册状态。 在本优选的实施例中, MD与 MME均可以触发迁移过程, 增加了 本实施例的方案的灵活性。 优选的,所述机器类型通信终端从所述已注册状态迁移至预注册状态的步骤包括: 所述移动性管理实体在检测到所述机器类型通信终端处于所述已注册状态之后将已有 的注销请求消息或新增的预注销请求消息发送给所述机器类型通信终端, 其中, 所述 已有的注销请求消息或新增的预注销请求消息携带有: 用于指示预注册状态的标识信 息; 所述移动性管理实体删除所述机器类型通信终端的承载信息, 并保存所述机器类 型通信终端的所述标识信息和位置信息。 优选的,所述机器类型通信终端从所述已注册状态迁移至预注册状态的步骤包括: 所述机器类型通信终端在检测到自身处于所述已注册状态之后将已有的注销请求消息 或新增的预注销请求消息发送给所述移动性管理实体, 其中, 所述已有的注销请求消 息或新增的预注销请求消息携带有: 用于指示预注册状态的标识信息; 所述移动性管 理实体删除所述机器类型通信终端的承载信息, 并保存所述机器类型通信终端的所述 标识信息和位置信息。 在本优选的实施例中, 通过利用已有的请求消息来发送标识信 息, 简化了流程, 节省了系统资源; 通过利用新增的预附着请求消息来发送标识信息, 使得接收端可以简单地分别出该条请求消息用于去预附着过程, 从而便于接收端的接 收; 此外, 在本优选的实施例中, MME保留了机器类型通信终端的所述标识信息和 位置信息, 以便后续用于对该 MD的寻呼。 优选的, 在所述移动性管理实体删除所述机器类型通信终端的承载信息并保存所 述机器类型通信终端的所述标识信息和位置信息之后, 还包括: 所述移动性管理实体 向服务网关发送第一会话删除请求消息, 其中, 所述第一会话删除请求消息携带有所 述机器类型通信终端的默认承载 LBI; 所述服务网关删除与所述默认承载 LBI对应的 缺省承载和专有承载信息; 所述服务网关向 PGW发送第二会话删除请求消息, 其中, 所述第二会话删除请求消息携带有所述机器类型通信终端的默认承载 LBI;所述 PGW 删除与所述默认承载 LBI对应的缺省承载和专有承载信息。 在本优选的实施例中, 通 过后续的处理过程, 完善了状态迁移过程。 优选的, 所述移动性管理实体在所述预注册状态下对所述机器类型通信终端进行 业务触发的步骤包括: 所述移动性管理实体接收到业务触发指示消息, 其中, 所述业 务触发指示消息用于指示触发所述机器类型通信终端上的业务; 所述移动性管理实体 使用所述标识信息和位置信息对所述机器类型通信终端发送寻呼消息; 所述机器类型 通信终端接收到所述寻呼消息之后向所述移动性管理实体发送寻呼应答响应。 在本优 选的实施例中, 完成了对 MD的业务的触发。 实施例 2 在本发明优选的实施例中, 采用以下技术方案: 定义一种新的 EMM 状态: EMM-PreREGISTERED状态。将 MD在非附着状态时置于 EMM-PreREGISTERED 状 态, MD可以是从 EMM-REGISTERED状态迁移到 EMM-PreREGISTERED状态或者 从 EMM-DEREGISTERED 状态迁移到 EMM -PreREGISTERED 状态。 在所述 EMM-PreREGISTERED 状态下核心网保存 MD 的位置信息和标识。 MTC 服务器向 MME发送业务触发指示, 当 MME收到业务触发指示后寻呼 MD。 进一步的, MD处于 EMM-PreREGISTERED状态时会有下面特征:
1 ) 不发起周期性的 TAU流程。 MTC Device的 TA (Tracking Area, 跟踪域) 发 生变化时才向 MME发起 TAU过程, 终端没有类似 EMM-REGISTERED状态时的周 期性 TAU流程;
2) 没有核心网用户面承载建立; 但是 MME上可以为 MD分配 S-TMSI、 保存 MD的 IMSI标识和位置区域信息。 可以通过 MME发起寻呼流程唤醒 MD。 进一步的, MTC终端可以在三种状态之间迁移。迁移过程可以采用现有的信令流 程。
MD从 EMM-DEREGISTERED (未注册)状态迁移到 EMM -PreREGISTERED (预 注册) 状态过程称为"预附着过程" (如图 4所示), 可以新增 NAS层流程或者复用现 有的"附着流程", 具体的是复用 "附着请求消息"。 为了区别正常的"附着流程", 可以 在"附着请求消息 "中加标识表明该"附着请求消息 "是"预附着流程"用的。 在"预附着过 程"中, MME收到 MTC Device发送"附着请求消息 "后, 不建立核心网的承载, 仅仅 是保存 UE 上报的标识信息和位置信息, 并且返回"预附着请求成功"。 从 EMM-PreREGISTERED状态转变到 EMM- DEREGISTERED状态过程称为 "去预附着 过程", 可以新增 NAS层流程或者复用现有的"注销流程", 具体的是复用 "注销请求消 息"。 MD在 EMM-PreREGISTERED (预注册) 状态和 EMM-REGISTERED (已注册) 状态之间的转换时, 可以复用现有的" PDN连接建立流程 "和" PDN去连接过程"(如图 6所示)。 MD向 MME发送" PDN连接建立请求消息", 核心网网元收到消息后, 建立 核心 网 内 的承载。 MD 的状态 由 EMM-PreREGISTERED 状态转变到 EMM-REGISTERED 状态; 当 UE 希望从 EMM-REGISTERED 状态转变到 EMM-PreREGISTERED状态时, 可以新增 NAS层流程或者复用现有的" PDN去连接 流程", UE/MME发送" PDN去连接请求消息"或新增的 NAS层消息, MME/UE释放核 心网内建立的承载。 MME上仍然保留 MD在附着过程中建立的部分上下文信息 (上 下文信息中保留有地理位置信息和 MD标识等)。 实施例 3 本实施例提出了为 MD预设一种新的 EMM-PreREGISTERED状态, 当 MD没有 进行业务时可以迁移到这种状态。 MD可以从现有技术中的两种状态迁移到新定义的 状态。 分为两个实施例进行说明。 当 MD处于 EMM-DEREGISTERED状态时, MD可以通过预附着请求过程实现 迁移到 EMM-PreREGISTER ED状态。 预附着请求过程可以复用现有的附着请求过程 或者采用新增的预附着请求过程。 和附着请求过程对应的消息是附着请求消息, 和预 附着请求过程对应的是预附着请求消息。 当 MD处于 EMM-DEREGISTERED状态时具有如下特征:
1 ) MME中的上下文信息中无有效的 UE的位置信息, 核心网无法寻呼到 UE。
2) 不会发起周期性 TAU过程; MD迁移到的 EMM-PreREGISTERED状态触发条件:
1 ) MD检测到自身处于 EMM-DEREGISTERED状态, 自动发起迁移过程;
2) MD上可以设置开关, 由人为方式触发; 在本实施例中, MD 的状态迁移采用预附着过程, 预附着过程中的预附着请求可 以如下方式: 1 )复用现有的 NAS层的附着流程, 为了区别所述预附着过程和现有技术中的 "附 着流程", 可以在 "附着请求"消息中增加一个标识信息, 这个标识信息可以通过增加 "attach type"的可选值为" MTC preAttach"实现。 当核心网网元 MME收到预附着请求 消息后, 根据消息中携带的标识信息能够识别出不是标准的附着流程, 而是"预附着过 程"执行和标准附着流程不同的操作; 2)新增一个新的预附着流程, 对应的消息可以称为"预附着请求消息",在"预附着 请求消息"中可以携带协议标识, 安全头类型, 附着请求消息标识, EPS 附着类型, NAS关键集标识, EPS移动标识, UE网络能力, ESM消息容器中的一个或者多个信 息; 如图 5所示, 预附着过程包含如下步骤:
Sl, UE 向核心网发送预附着请求, 预附着过程可以采用上述的两种方式。 消息 中包含 MD的标识信息,最后访问过的 TAI, UE特定的 DRX( Discontinuous Reception, 非连续接收)参数, PDN类型,协议配置选项、已加密选项传输标识、接入类型、 KaSme、 NAS序列号等全部或者部分信息;
52, e B (Evolved NodeB, 演进型基站) 将预附着请求消息中包含在 S1AP ( S1 Application Protocol, SI接口的应用协议) 的初始 UE消息中转发给 MME, 同时一起 发送的还有选择的网络的 PLMN ID和 MD所在小区的 TAI,ECGI;
53 , 如果网络中没有保存 MD的上下文, 如果预附着请求消息没有得到完整性保 护, 或者如果完整性检查失败, 则激活完整性保护和 NAS加密的鉴权和 NAS安全性 建立是必须执行的, 否则这个过程可选。如果 NAS安全算法发生了改变, 则在这个步 骤中应执行 NAS安全建立。 S4, MME通过 S1AP的初始上下文建立请求消息向 eNB发送预附着接收消息, 其中套含 TAI列表、 KSIasme、 NAS序列号。 在 S1AP消息中还需要包含对 UE使用 的 AS安全上下文、 切换限制列表信息部分或全部信息。
S5, eNB向 MD发送 RRC连接重配消息。 由于在预附着过程中没有为 MD建立 核心网承载, 在 RRC连接重配过程中不为 MD配置 DRB, 仅仅配置 SRB。 此外, 基 站还需要完成 MD测量配置等现有技术中必须的配置过程。 基站通过 RRC连接重配 消息将收到的预附着接收消息通知到 MD。
S6, MD根据步骤 S5中的配置请求完成配置过程, 向 eNB发送 RRC连接重配完 成消息。
S7, eNB 向 MME发送初始化上下文应答消息。 这条消息中包含该 MD对应的 MME S 1 AP信令标识和 eNB S 1 AP信令标识。
S8, MD完成预附着请求过程后, 向 eNB发送直接传输消息, 其中包含预附着完 成消息。
S9, eNB通过给 MME发送上行 NAS传输消息,将预附着完成消息转发给 MME。 实施例 4 当 MD处于 EMM-REGISTERED状态时, MD实现迁移到 EMM-PreREGI STERED 状态。 预注销过程可以复用现有的注销过程或者新增预注销请求过程。 和注销过程对 应的是注销请求消息, 和预注销请求过程对应的是预注销请求消息。 当 MD处于 EMM-REGISTERED状态时具有如下特征:
1 ) MME中的上下文信息中无有效的 UE的位置信息, 核心网无法寻呼到 UE。
2) 不会发起周期性 TAU过程;
MD迁移到的 EMM-PreREGISTERED状态触发条件:
1 ) MD上的业务执行完毕,但是 MD仍然处于 EMM-REGISTERED状态, 由 MD 触发或者由 MME网元自动触发;
2) MD上可以设置开关, 由人为方式触发; 在本优选的实施例中, MD 的状态迁移采用预注销过程, 预注销过程中的预注销 请求可以如下方式:
1 ) 复用现有的 NAS层的注销流程, 但是需要和现有技术中的注销过程区别开。 为了区别所述预注销过程和现有技术中的"注销流程", 可以在 "注销请求"消息中增加 一个标识信息, 这个标识信息在"注销请求"消息中的"注销类型"信元中实现, 通过增 加一种称为"预注销"的注销类型。 当核心网网元 MME收到注销请求消息后, 根据消 息中携带的注销类型标识信息能够识别出不是标准的注销流程, 而是"预注销过程", MME执行和标准注销流程不同的操作; 2)新增一个新的去预注销流程, 对应的消息可以称为"预注销请求消息",在"预注 销请求消息"中需要携带 MD标识。 如图 7所示, 预注销过程包含如下步骤:
Sl, MD和 MME都可以发起预注销请求过程 (如图 7中的 Sla和 Sib所示)。 MD或者 MME向对方发送预注销请求过程, 具体方式可以采用上述两种方式。 MME 发起预注销请求过程或者收到 MD发起的预注销请求过程后, 删除 MME上保存的部 分上下文信息。 仅留下 MD的位置信息和标识信息, 删除 MD的承载相关的信息等。 S2, MME向 SGW ( Serving Gateway, 服务网关) 发送会话删除请求, 消息中有 MD的默认承载 LBI (Linked EPS Bearer ID)0 SGW收到会话删除请求消息后, 删除 和该 LBI对应的所有缺省承载和专有承载信息。
SGW向 PGW发送会话删除请求消息,消息中包含了 MD的默认承载 LBKLinked EPS Bearer ID, 连接的 EPS承载标识)。 PGW收到了会话删除请求消息后, 删除和该
LBI对应的所有缺省承载和专有承载信息。
PGW向 SGW返回会话删除应答消息,向 SGW通知已经完成了 S5接口承载删除 过程。
SGW向 MME返回会话删除应答消息, 向 MME通知已经完成了 S1-U接口的承 载删除过程。
S3 , MME向 e B发送去激活承载请求;
S4, eNB向 UE发送 RRC连接重配消息;
S5, UE向 eNB发送 RRC连接重配应答消息;
S6, eNB向 MME发送去激活承载应答。 在本优选的实施例中, MD向 MME返回注销应答消息, 或者 MME向 MD发送 注销应答消息。 实施例 5
MD 处于 EMM-REGISTERED 状态或者 EMM-DEREGISTERED 时可以迁移到 EMM-preREGISTERED状态。 当 MTC Server (MTC服务器) 需要 MD发起业务时, 向网络侧发送触发指示, 网络侧通过寻呼触发 MD发起业务。 下面通过本实施例来说 明 MD发生状态迁移并且发起业务的过程, 本实施例包含以下步骤 (如图 8和图 9所 示):
SI MD处于 EMM-REGISTERED (已注册) 状态或者 EMM-DEREGISTERED状 态(未注册)。通常情况下 MD在完成了附着过程, 会处于 EMM-REGISTERED状态, 此时 MD 可以在处理某种业务; MD 在开机但是没有发起附着过程时会处于 EMM-DEREGISTERED, 比如没有 SIM ( Subscriber Identity Module, 客户识别模块) 卡, 或者正在进行附着过程, 但是尚未成功; S2, MD受到触发后发起预注销过程或者预附着过程, 触发过程可以参照实施例 3和实施例 4中所描述的预注销过程或者预附着过程;
S3 , MD 发生了状态迁移, 由 EMM-REGISTERED 状态或者 EMM-DEREGIS TERED状态迁移到 EMM-preREGISTERED状态, 在此状态下可以接收到网络侧发送 的寻呼消息;
S4当 MTC Server需要发起业务请求时, 可以通过 MTC Server向 MME发送触发 指示, 业务请求消息可以通过 PGW或者 HSS (Home Subscriber Server, 归属用户服 务器) 等网元发向 MME。 业务触发指示可以通过应用层的信令发送到 MME。
S5, MME收到了业务触发指示后, 从前面实施例 1, 2可以, 当 MD发生了状态 迁移处于 EMM-preREGISTERED状态时, MME中保存有 MD的位置信息和标识信息, MME可以根据这些发起对 MD的寻呼过程;
S6, MD收到了寻呼消息后, 向 MME发起寻呼应答, 这样就完成了对 MD的触 发过程。 实施例 6 图 10 是根据本发明实施例的机器类型通信终端的业务触发装置的一种优选的结 构图, 其包括: 检测单元 1002, 设置为检测到机器类型通信终端处于未注册状态或已 注册状态; 迁移单元 1004, 设置为触发所述机器类型通信终端从所述未注册状态或所 述已注册状态迁移至预注册状态, 其中, 在所述预注册状态中, 移动性管理实体保存 所述机器类型通信终端的标识信息和位置信息; 业务触发单元 1006, 设置为接收用于 所述移动性管理实体触发所述机器类型通信终端业务的业务触发指示消息, 其中, 所 述业务触发指示消息用于指示触发所述机器类型通信终端上的业务; 所述移动性管理 实体使用所述标识信息和位置信息产生所述业务触发指示消息。 在本优选的实施例中, 将从机器类型通信终端 (MD) 从未注册状态或已注册状 态迁移至预注册状态, 由于在预注册状态中, 移动性管理实体(MME)保存机器类型 通信终端的标识信息和位置信息, 从而使得 MME可以利用标识信息和位置信息寻呼 到 MD, 解决了现有技术中核心网无法对处于未附着(not attached)状态下的 MTC终 端进行寻呼的问题, 进而达到了准确触发 MTC终端业务的效果。 优选的, 所述迁移单元 1004还可以包括: 第一设置模块, 设置为在已有的附着请 求消息中增加用于指示预注册状态的标识信息, 或者, 新增携带有所述标识信息的预 附着请求消息; 第一发送模块, 设置为将所述已有的附着请求消息或所述新增的预附 着请求消息发送给所述移动性管理实体; 检测模块, 设置为检测到所述机器类型通信 终端的位置发生变化; 第二发送模块, 设置为将变化后的位置信息发送给所述移动性 管理实体。 在本优选的实施例中, 通过利用已有的请求消息来发送标识信息, 简化了 流程, 节省了系统资源; 通过利用新增的预附着请求消息来发送标识信息, 使得接收 端可以简单地分别出该条请求消息用于预附着过程, 从而便于接收端的接收; 此外, 在本优选的实施例中, MD不周期性地进行 TAU流程, 只在 MD的 TA (位置信息) 发生变化时, 才向 MME上报更新后的位置信息, 从而简化了流程。 优选的,所述机器类型通信终端从所述已注册状态迁移至预注册状态的步骤包括: 所述机器类型通信终端在执行完业务之后检测到自身处于所述已注册状态; 所述机器 类型通信终端或所述移动性管理实体触发所述机器类型通信终端从所述已注册状态迁 移至预注册状态。 在本优选的实施例中, MD与 MME均可以触发迁移过程, 增加了 本实施例的方案的灵活性。 优选的, 所述迁移单元 1004还可以包括: 第二设置模块, 设置为在已有的注销请 求消息中增加用于指示预注册状态的标识信息, 或者, 新增携带有所述标识信息的预 注销请求消息; 第三发送模块, 设置为将所述已有的注销请求消息或所述新增的预注 销请求消息发送给所述移动性管理实体; 删除模块, 设置为删除所述移动性管理实体 上的所述机器类型通信终端的承载信息, 并保存所述机器类型通信终端的所述标识信 息和位置信息。 在本优选的实施例中, 通过利用已有的请求消息来发送标识信息, 简 化了流程, 节省了系统资源; 通过利用新增的预附着请求消息来发送标识信息, 使得 接收端可以简单地分别出该条请求消息用于去预附着过程, 从而便于接收端的接收; 此外, 在本优选的实施例中, MME保留了机器类型通信终端的所述标识信息和位置 信息, 以便后续用于对该 MD的寻呼。 优选的, 在所述移动性管理实体删除所述机器类型通信终端的承载信息并保存所 述机器类型通信终端的所述标识信息和位置信息之后, 还包括: 所述移动性管理实体 向服务网关发送第一会话删除请求消息, 其中, 所述第一会话删除请求消息携带有所 述机器类型通信终端的默认承载 LBI; 所述服务网关删除与所述默认承载 LBI对应的 缺省承载和专有承载信息; 所述服务网关向 PGW发送第二会话删除请求消息, 其中, 所述第二会话删除请求消息携带有所述机器类型通信终端的默认承载 LBI;所述 PGW 删除与所述默认承载 LBI对应的缺省承载和专有承载信息。 在本优选的实施例中, 通 过后续的处理过程, 完善了状态迁移过程。 优选的, 所述移动性管理实体在所述预注册状态下对所述机器类型通信终端进行 业务触发的步骤包括: 所述移动性管理实体接收到业务触发指示消息, 其中, 所述业 务触发指示消息用于指示触发所述机器类型通信终端上的业务; 所述移动性管理实体 使用所述标识信息和位置信息对所述机器类型通信终端发送寻呼消息; 所述机器类型 通信终端接收到所述寻呼消息之后向所述移动性管理实体发送寻呼应答响应。 在本优 选的实施例中, 完成了对 MD的业务的触发。 需要说明的是, 在附图的流程图示出的步骤可以在诸如一组计算机可执行指令的 计算机系统中执行, 并且, 虽然在流程图中示出了逻辑顺序, 但是在某些情况下, 可 以以不同于此处的顺序执行所示出或描述的步骤。 显然, 本领域的技术人员应该明白, 上述的本发明的各模块或各步骤可以用通用 的计算装置来实现, 它们可以集中在单个的计算装置上, 或者分布在多个计算装置所 组成的网络上, 可选地, 它们可以用计算装置可执行的程序代码来实现, 从而, 可以 将它们存储在存储装置中由计算装置来执行, 或者将它们分别制作成各个集成电路模 块, 或者将它们中的多个模块或步骤制作成单个集成电路模块来实现。 这样, 本发明 不限制于任何特定的硬件和软件结合。 以上所述仅为本发明的优选实施例而已, 并不用于限制本发明, 对于本领域的技 术人员来说, 本发明可以有各种更改和变化。 凡在本发明的精神和原则之内, 所作的 任何修改、 等同替换、 改进等, 均应包含在本发明的保护范围之内。

Claims

权 利 要 求 书
1. 一种机器类型通信终端的业务触发方法, 包括:
机器类型通信终端检测到自身处于未注册状态或已注册状态; 所述机器类型通信终端从所述未注册状态或所述已注册状态迁移至预注册 状态;
所述移动性管理实体在所述预注册状态下对所述机器类型通信终端进行业 务触发。
2. 根据权利要求 1所述的方法, 其中, 在所述预注册状态中, 所述移动性管理实 体保存所述机器类型通信终端的标识信息和位置信息, 其中, 所述移动性管理 实体在所述预注册状态下对所述机器类型通信终端进行业务触发的步骤包括: 所述移动性管理实体使用所述标识信息和位置信息对所述机器类型通信终 端进行业务触发。
3. 根据权利要求 1所述的方法, 其中, 所述机器类型通信终端从所述未注册状态 迁移至预注册状态的步骤包括:
所述机器类型通信终端在检测到自身处于未注册状态之后, 将已有的附着 请求消息或新增的预附着请求消息发送给所述移动性管理实体, 其中, 所述已 有的附着请求消息或新增的预附着请求消息携带有: 用于指示预注册状态的标 识信息;
所述机器类型通信终端在检测到自身的位置发生变化之后, 将变化后的位 置信息发送给所述移动性管理实体。
4. 根据权利要求 1所述的方法, 其中, 所述机器类型通信终端从所述已注册状态 迁移至预注册状态的步骤包括:
所述机器类型通信终端在执行完业务之后检测到自身处于所述已注册状 态;
所述机器类型通信终端或所述移动性管理实体触发所述机器类型通信终端 从所述已注册状态迁移至预注册状态。
5. 根据权利要求 1所述的方法, 其中, 所述机器类型通信终端从所述已注册状态 迁移至预注册状态的步骤包括:
所述机器类型通信终端在检测到自身处于所述已注册状态之后将已有的注 销请求消息或新增的预注销请求消息发送给所述移动性管理实体, 其中, 所述 已有的注销请求消息或新增的预注销请求消息携带有: 用于指示预注册状态的 标识信息;
所述移动性管理实体删除所述机器类型通信终端的承载信息, 并保存所述 机器类型通信终端的标识信息和位置信息。
6. 根据权利要求 1所述的方法, 其中, 所述机器类型通信终端从所述已注册状态 迁移至预注册状态的步骤包括:
所述移动性管理实体在检测到所述机器类型通信终端处于所述已注册状态 之后将已有的注销请求消息或新增的预注销请求消息发送给所述机器类型通信 终端, 其中, 所述已有的注销请求消息或新增的预注销请求消息携带有: 用于 指示预注册状态的标识信息;
所述移动性管理实体删除所述机器类型通信终端的承载信息, 并保存所述 机器类型通信终端的标识信息和位置信息。
7. 根据权利要求 6所述的方法, 其中, 在所述移动性管理实体删除所述机器类型 通信终端的承载信息并保存所述机器类型通信终端的所述标识信息和位置信息 之后, 还包括:
所述移动性管理实体向服务网关发送第一会话删除请求消息, 其中, 所述 第一会话删除请求消息携带有所述机器类型通信终端的默认承载连接的演进分 组系统承载标识 LBI;
所述服务网关删除与所述默认承载 LBI对应的缺省承载和专有承载信息; 所述服务网关向分组数据网络网关 PGW发送第二会话删除请求消息, 其 中,所述第二会话删除请求消息携带有所述机器类型通信终端的默认承载 LBI; 所述 PGW删除与所述默认承载 LBI对应的缺省承载和专有承载信息。
8. 根据权利要求 1所述的方法, 其中, 所述移动性管理实体在所述预注册状态下 对所述机器类型通信终端进行业务触发的步骤包括:
所述移动性管理实体接收到业务触发指示消息, 其中, 所述业务触发指示 消息用于指示触发所述机器类型通信终端上的业务; 所述移动性管理实体使用所述标识信息和位置信息对所述机器类型通信终 端发送寻呼消息;
所述机器类型通信终端接收到所述寻呼消息之后向所述移动性管理实体发 送寻呼应答响应。
9. 一种机器类型通信终端的业务触发装置, 包括:
检测单元,设置为检测到机器类型通信终端处于未注册状态或已注册状态; 迁移单元, 设置为触发所述机器类型通信终端从所述未注册状态或所述已 注册状态迁移至预注册状态, 其中, 在所述预注册状态中, 移动性管理实体保 存所述机器类型通信终端的标识信息和位置信息;
业务触发单元, 设置为接收用于所述移动性管理实体触发所述机器类型通 信终端业务的业务触发指示消息, 其中, 所述业务触发指示消息用于指示触发 所述机器类型通信终端上的业务; 所述移动性管理实体使用所述标识信息和位 置信息产生所述业务触发指示消息。
10. 根据权利要求 9所述的装置, 其中, 所述迁移单元包括: 第一设置模块, 设置为在已有的附着请求消息中增加用于指示预注册状态 的标识信息, 或者, 新增携带有所述标识信息的预附着请求消息;
第一发送模块, 设置为将所述已有的附着请求消息或所述新增的预附着请 求消息发送给所述移动性管理实体;
检测模块, 设置为检测到所述机器类型通信终端的位置发生变化; 第二发送模块, 设置为将变化后的位置信息发送给所述移动性管理实体。
11. 根据权利要求 9所述的装置, 其中, 所述迁移单元包括:
第二设置模块, 设置为在已有的注销请求消息中增加用于指示预注册状态 的标识信息, 或者, 新增携带有所述标识信息的预注销请求消息;
第三发送模块, 设置为将所述已有的注销请求消息或所述新增的预注销请 求消息发送给所述移动性管理实体;
删除模块, 设置为删除所述移动性管理实体上的所述机器类型通信终端的 承载信息, 并保存所述机器类型通信终端的所述标识信息和位置信息。
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