CN101568113B - Method, device and system for realizing synchronization of loading state - Google Patents
Method, device and system for realizing synchronization of loading state Download PDFInfo
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Abstract
The invention provides a method for realizing synchronization of the loading state between UE and MME. The method comprises the steps as follows: A, an MME sends a demand signaling carrying self EPS loading state information to a UE; B, the UE deletes resources distributed to an unactivated state load according to the received signaling and then returns a response signaling containing the self EPSloading state information of the UE to the MME; and C, the MME deletes the resources distributed to the unactivated state load according to the received response signaling. The invention also provides a device and a system for realizing the synchronization of the loading state between the UE and the MME. The method, the device and the system can simply realize the synchronization of the loading state between the MME and the UE in an IDLE state in the service request process.
Description
Technical Field
The present invention relates to a bearer state synchronization technology, and in particular, to a method, an apparatus, and a system for implementing bearer state synchronization.
Background
In a 3GPP Long Term Evolution (LTE) system, when a User Equipment (UE) is in an IDLE (IDLE) state, after a Mobility Management Entity (MME) receives a bearer deletion message transmitted from a higher layer, the MME stores the message for a certain period of time until the UE transitions from the IDLE state to an ACTIVE (ACTIVE) state next time, and completes synchronization between the UE and an EPS bearer state (EPS bearer status) of a network. Generally, the UE transitions from the IDLE state to the ACTIVE state during a Tracking Area Update (TAU) procedure or a service request (service request) procedure.
In the existing protocol, it is specified that in the TAU procedure, EPS bearer status messages of the UE and the MME can be carried in the TAU request and the TAU grant messages, respectively, for indicating all bearers in an active state in the UE and the MME, but how to implement EPS bearer status synchronization between the UE and the MME through the service request procedure is not described.
Fig. 1 is a schematic diagram of a service request process in the prior art, as shown in fig. 1, the process includes:
step 101: the UE sends a service request message belonging to a non-access stratum (NAS) message to an evolved base station eNode B.
The service request message may be carried by a Radio Resource Control (RRC) message and sent over the air interface.
Wherein, the service request message may include a service type (service type) IE, and the service type IE is used to indicate whether the service request procedure is initiated by a paging response (paging response) or data (data).
Step 102: and the eNode B directly sends the received service request message to an MME.
Step 103: and the MME performs NAS authentication.
Step 104: the MME sends an initial context setup request message to the eNode B.
This step is used to establish all the EPS bearers in the active state on the S1 interface and air interface, and the UE also stores relevant information of the UE, such as encryption context, bearer quality of service (QoS) criteria, S1 tunnel address, etc.
Step 105: and establishing an air interface bearer between the eNode B and the UE according to the received initial context establishment request message.
Step 106: the UE starts to transfer uplink data.
Step 107: the eNode B sends an initial context setup complete message to the MME.
Step 108: the MME sends a bearer update request message to the serving interface gateway (serving GW), which starts transmitting downlink data to the UE.
Step 109: and the serving GW returns a bearer update response message to the MME.
In the service request procedure shown in fig. 1, if the service request message is initiated due to a signaling triggered paging (paging) procedure, such as a release (detach) procedure initiated by an MME/HSS, and the MME only establishes a signaling connection without establishing an S1 connection and an air interface bearer of a user plane, at this time, steps 104 to 109 may be omitted, and an S1 connection is established by NAS signaling initiated by a network directly.
As can be seen from the above description of the service request procedure: in the existing protocol, there is no specification on how to synchronize the bearer state between the UE and the MME during the service request.
Disclosure of Invention
In view of this, the main objective of the present invention is to provide a method, an apparatus, and a system for implementing bearer state synchronization between a UE and an MME, which can complete the bearer state synchronization between the UE and the MME in an IDLE state during a service request process, and are simple to implement.
In order to achieve the purpose, the technical scheme of the invention is realized as follows:
the invention provides a method for realizing synchronization of a bearing state, which comprises the following steps:
A. a mobile management entity MME sends a request signaling carrying self EPS bearing state information to user equipment UE;
B. the UE deletes the resources allocated to the non-activated bearer according to the received signaling, and then returns a response signaling containing the EPS bearer state information of the UE to the MME;
C. and the MME deletes the resources allocated to the inactive state bearer according to the received response signaling.
Wherein, step A further comprises:
and the signaling or the data triggers a service request process, and after the non-access stratum NAS authentication is completed and the bearer is established, the service interface gateway returns a bearer update response message to the MME.
When the signaling or data triggers the service request process, step a further includes:
and the UE sends the service request message to the MME through the evolved NodeB (eNode B) for NAS authentication.
When the S1 interface bearer does not need to be established in the signaling service triggering request process, the request signaling is an NAS downlink direct transfer message, and the response signaling is an NAS response message.
When an S1 interface bearer needs to be established in the signaling service triggering request process or the data service triggering request process, the request signaling is an initial context establishment request message; the response signaling is an initial context setup complete message.
When an S1 interface bearer needs to be established in the process of signaling service triggering request, the EPS bearer state information is included in the NAS protocol data unit PDU of the initial context establishment request message or the initial context establishment completion message, or is included in the session management configuration message of the NAS PDU;
when data triggers a service request process, the EPS bearer state information is included in the NAS PDU of the initial context setup request message or the initial context setup complete message.
The EPS bearer state information includes: EPS bearer identification, and session management status of the bearer.
The invention also provides a device for realizing the synchronization of the bearing state, which comprises: the device comprises a data receiving module, a bearing state management module, a resource deleting module, a message generating module and a data sending module; wherein,
the data receiving module is used for receiving a request signaling which is sent by the MME and carries EPS bearing state information of the MME and sending the request signaling to the resource deleting module and the bearing state management module;
the bearing state management module is used for modifying the EPS bearing state information of the device to which the bearing state management module belongs according to the EPS bearing state information in the request signaling and sending the modified EPS bearing state information to the message generation module;
a resource deleting module, configured to delete the resource allocated to the inactive bearer according to the EPS bearer state information carried in the request signaling;
the message generating module is used for generating a response signaling carrying the EPS bearing state information of the device to which the message generating module belongs and sending the response signaling to the data sending module;
and the data sending module is used for sending the response signaling to the MME.
The invention also provides a device for realizing the synchronization of the bearing state, which comprises: the device comprises a message generation module, a data sending module, a data receiving module, a bearing state management module and a resource deleting module; wherein,
the message generation module is used for reading EPS bearing state information of a device to which the message generation module belongs from the bearing state management module, generating a request signaling carrying the EPS bearing state information, and sending the request signaling to the data sending module;
a data sending module, configured to send the request signaling to the UE;
the data receiving module is used for receiving a response signaling which is sent by the UE and carries the EPS bearing state information of the UE, and sending the request signaling to the resource deleting module and the bearing state management module;
the bearing state management module is used for returning the EPS bearing state information to the message generation module when the message generation module reads the EPS bearing state information; the response signaling is also used for carrying out response signaling according to the EPS bearing state information of the device to which the response signaling belongs;
and the resource deleting module is used for deleting the resources allocated to the inactive state bearing according to the EPS bearing state information carried in the response signaling.
The invention also provides a system for realizing the synchronization of the bearing state, which comprises: UE and MME; wherein,
the MME is used for generating a request signaling carrying EPS bearing state information of the MME and sending the request signaling to corresponding UE; the UE is also used for deleting the resources allocated to the non-activated state bearing according to the received response signaling carrying the EPS bearing state information of the UE per se returned by the UE;
and the UE is used for deleting the resources allocated to the non-activated state bearer according to the received request signaling carrying the EPS bearer state information of the MME, generating a response signaling carrying the EPS bearer state information of the UE and sending the response signaling to the MME.
Wherein, the UE side includes: the device comprises a data receiving module, a bearing state management module, a resource deleting module, a message generating module and a data sending module; wherein,
the data receiving module is used for receiving a request signaling which is sent by the MME and carries EPS bearing state information of the MME and sending the request signaling to the resource deleting module and the bearing state management module;
the bearing state management module is used for modifying the EPS bearing state information of the device to which the bearing state management module belongs according to the EPS bearing state information in the request signaling and sending the modified EPS bearing state information to the message generation module;
a resource deleting module, configured to delete the resource allocated to the inactive bearer according to the EPS bearer state information carried in the request signaling;
the message generating module is used for generating a response signaling carrying the EPS bearing state information of the device to which the message generating module belongs and sending the response signaling to the data sending module;
and the data sending module is used for sending the response signaling to the MME.
The MME side includes: the device comprises a message generation module, a data sending module, a bearing state management module, a data receiving module and a resource deleting module; wherein,
the message generation module is used for reading EPS bearing state information of a device to which the message generation module belongs from the bearing state management module, generating a request signaling carrying the EPS bearing state information, and sending the request signaling to the data sending module;
a data sending module, configured to send the request signaling to the UE;
the data receiving module is used for receiving a response signaling which is sent by the UE and carries the EPS bearing state information of the UE, and sending the request signaling to the resource deleting module and the bearing state management module;
the bearing state management module is used for returning the EPS bearing state information to the message generation module when the message generation module reads the EPS bearing state information; the response signaling is also used for carrying out response signaling according to the EPS bearing state information of the device to which the response signaling belongs;
and the resource deleting module is used for deleting the resources allocated to the inactive state bearing according to the EPS bearing state information carried in the response signaling.
According to the method, the device and the system for realizing the synchronization of the bearing state between the UE and the MME, the synchronization of the bearing state between the UE and the MME is finished by transmitting the corresponding signaling carrying the corresponding EPS bearing state information between the MME and the UE in the service request process, the problem of bearing deletion of the UE in an idle state is solved, and the realization is simple.
Drawings
FIG. 1 is a diagram illustrating a service request process in the prior art;
FIG. 2 is a flowchart illustrating a first method for implementing synchronization of bearer states between a UE and an MME according to the present invention;
FIG. 3 is a flowchart illustrating a second method for implementing synchronization of bearer states between a UE and an MME according to the present invention;
FIG. 4 is a flowchart illustrating a third method for implementing synchronization of bearer states between a UE and an MME according to the present invention;
FIG. 5 is a schematic structural diagram of an apparatus for implementing synchronization of bearer states between a UE and an MME according to the present invention;
fig. 6 is a schematic structural diagram of another apparatus for implementing bearer state synchronization between a UE and an MME according to the present invention.
Detailed Description
The basic idea of the invention is: and completing the synchronization of the bearing state between the UE and the MME by transmitting a corresponding signaling carrying the corresponding EPS bearing state information between the MME and the UE.
Hereinafter, a method, an apparatus, and a system for implementing bearer state synchronization between a UE and an MME according to the present invention are described in detail with reference to the accompanying drawings.
Fig. 2 is a schematic flow chart of a method for implementing bearer state synchronization between a UE and an MME according to the present invention, where steps 201 to 204 included in the method are sequentially executed after the service request process shown in fig. 1 is completed, that is: after the service request procedure is triggered by signaling or data, the service request procedure shown in fig. 1 is executed, the MME initiates an initial context setup procedure, or directly initiates an NAS message to setup S1 connection, and after step 109 shown in fig. 1 is executed, steps 201 to 204 shown in fig. 2 are sequentially executed. The method shown in fig. 2 comprises the following steps:
step 201: the MME sends an EPS Bearer Status request (EPS Bearer Status request) message to the UE.
The EPS bearer state request message belongs to NAS message, and is used for transmitting EPS bearer state information in the MME, so as to indicate all active bearers in the MME to the UE receiving the EPS bearer state request message.
The EPS BEARER STATE information at least includes an EPS BEARER identifier (EPS BEARER ID) and a session management STATE (ESM STATE), where the EPS BEARER identifier is used to identify an EPS BEARER, the ESM STATE is used to indicate a STATE where a corresponding BEARER is located, and the STATE may be represented as activated or deactivated.
Step 202: and the UE deletes the resources allocated to the non-activated state bearer according to the EPS bearer state information in the EPS bearer state request message.
The implementation of this step can be: and after receiving the EPS bearing state request message, the UE compares the EPS bearing state information in the message with the bearing state information stored by the UE, and deletes the bearing resource indicated as the non-activated state in the EPS state information of the MME.
Specifically, how to delete the bearer resource belongs to a known technology, and is not described herein again.
Step 203: the UE returns an NAS response message EPS bearer status response (EPS bearer status response) message to the MME.
The EPS bearer state response message includes EPS bearer state information of the UE, and is used to indicate all active bearers in the UE to the MME. The content of the EPS bearer status information may be the same as that in step 201, except that: the EPS bearer state information in this step is bearer state information of the UE.
Step 204: and the MME deletes the resources allocated to the non-activated bearer according to the EPS bearer state information in the EPS bearer state response message.
Wherein, the processing method of the MME after receiving the EPS bearer status response message is the same as the processing method of the UE in step 202, and is not described herein again.
Fig. 3 is a schematic flow chart of a second method for implementing bearer state synchronization between a UE and an MME according to the present invention, where the method is applied to a case where a service request procedure is triggered by a signaling and an S1 interface bearer does not need to be established, that is: when a paging procedure is triggered by some signaling reasons, for example, when paging is triggered by a GUTI relocation procedure, a UE initiates a service request, as shown in fig. 3, steps 301 to 304 are similar to steps 201 to 204 shown in fig. 2, except that: in the method shown in fig. 3, after the service request procedure shown in fig. 1 is executed to step 103, when a NAS signaling initiated by the network establishes S1 connection, the corresponding NAS downlink direct transfer message in the prior art directly includes the EPS bearer state information of the MME, and the corresponding NAS response message includes the EPS bearer state information of the UE.
The method for synchronizing bearer states between the UE and the MME shown in fig. 4 is applicable to a case where a service request procedure is triggered by signaling and an S1 interface bearer needs to be established, or a case where the service request procedure is triggered by data, at this time, the EPS bearer state information of the MME is added in the initial context establishment request message described in step 104 and sent to the UE, and the EPS bearer state information of the UE is added in the initial context establishment completion message described in step 107 and sent to the MME.
If the service request process is triggered by signaling and an S1 interface bearer needs to be established, the initial context establishment request message and the initial context establishment completion message include a NAS Protocol Data Unit (PDU), and the NAS PDU unit includes a session management configuration (session management configuration) message, the EPS bearer state information may be included in the NAS PDU unit or the session management configuration message.
And under the condition that the service request process is triggered by data, the EPS bearing state information is put into an NAS PDU unit of a corresponding message.
Fig. 5 is a schematic structural diagram of an apparatus for implementing bearer state synchronization between a UE and an MME according to the present invention, where the apparatus may be disposed in the UE, and as shown in fig. 5, the apparatus includes: a data receiving module 510, a resource deleting module 520, a message generating module 530, a data transmitting module 540, and a bearer state managing module 550; wherein,
the data receiving module 510 is configured to receive a request signaling carrying the EPS bearer status information of the MME from the MME, and send the request signaling to the resource deleting module 520 and the bearer status managing module 550.
And a resource deleting module 520, configured to delete the resource allocated to the inactive bearer according to the EPS bearer state information carried in the request signaling.
The bearer state management module 550 is configured to receive the request signaling, modify the EPS bearer state information of the device to which the bearer state management module belongs according to the EPS bearer state information in the request signaling, and send the modified EPS bearer state information to the message generation module 530.
The message generating module 530 is configured to generate a response signaling carrying EPS bearer status information of a device to which the message generating module belongs, and send the response signaling to the data sending module 540.
A data sending module 540, configured to send the response signaling to the MME.
Fig. 6 is a schematic structural diagram of an apparatus for implementing bearer status synchronization between a UE and an MME, where the apparatus may be disposed in the MME, and as shown in fig. 6, the apparatus includes: a message generation module 610, a data transmission module 620, a data reception module 630, a resource deletion module 640, and a bearer state management module 650; wherein,
the message generating module 610 is configured to read EPS bearer status information of a device to which the message generating module is self-owned, which is stored in the bearer status management module 650, generate a request signaling carrying the EPS bearer status information, and send the request signaling to the data sending module 620.
A data sending module 620, configured to send the response signaling to the UE.
A data receiving module 630, configured to receive a response signaling carrying the EPS bearer status information of the UE from the UE, and send the response signaling to the resource deleting module 640 and the bearer status managing module 650.
And a resource deleting module 640, configured to delete the resource allocated to the inactive bearer according to the EPS bearer state information carried in the response signaling.
The bearer state management module 650 is configured to, when the message generating module 610 reads the EPS bearer state information, return the EPS bearer state information to the message generating module 610; and the device is also used for modifying the EPS bearing state information of the device according to the EPS bearing state information carried in the response signaling.
The invention also provides a system for realizing the synchronization of the bearing state between the UE and the MME, which comprises the following components: UE and MME; wherein,
the MME is used for generating a request signaling carrying EPS bearing state information of the MME and sending the request signaling to corresponding UE; and the resource allocation module is also used for deleting the resource allocated to the non-activated state bearing according to the received response signaling carrying the EPS bearing state information of the UE self returned by the UE.
And the UE is used for deleting the resources allocated to the non-activated state bearer according to the received request signaling carrying the EPS bearer state information of the MME, generating a response signaling carrying the EPS bearer state information of the UE and sending the response signaling to the MME.
Wherein, the UE in the system can be implemented by the apparatus shown in fig. 5, and the MME can be implemented by the apparatus shown in fig. 6.
The above description is only a preferred embodiment of the present invention, and is not intended to limit the scope of the present invention.
Claims (12)
1. A method for implementing bearer state synchronization, the method comprising:
A. a mobile management entity MME sends a request signaling carrying self EPS bearing state information to user equipment UE;
B. the UE deletes the resources allocated to the non-activated bearer according to the received signaling, and then returns a response signaling containing the EPS bearer state information of the UE to the MME;
C. and the MME deletes the resources allocated to the inactive state bearer according to the received response signaling.
2. The method of claim 1, wherein step a is preceded by the further step of:
and the signaling or the data triggers a service request process, and after the non-access stratum NAS authentication is completed and the bearer is established, the service interface gateway returns a bearer update response message to the MME.
3. The method of claim 2, wherein when the signaling or data triggers the service request procedure, step a is preceded by:
and the UE sends the service request message to the MME through the evolved NodeB (eNode B) for NAS authentication.
4. The method according to claim 3, wherein when the S1 interface bearer does not need to be established in the signaling service triggering request process, the request signaling is an NAS downlink direct transfer message, and the response signaling is an NAS response message.
5. The method according to claim 3, wherein when an S1 interface bearer needs to be established in the signaling service triggering request procedure or the data triggering service request procedure is performed, the request signaling is an initial context establishment request message; the response signaling is an initial context setup complete message.
6. The method of claim 5, wherein when an S1 interface bearer needs to be established in the process of signaling service triggering request, the EPS bearer status information is included in a NAS protocol data unit PDU of the initial context establishment request message or the initial context establishment completion message, or is included in a session management configuration message of the NAS PDU;
when data triggers a service request process, the EPS bearer state information is included in the NAS PDU of the initial context setup request message or the initial context setup complete message.
7. The method according to any of claims 1 to 6, wherein the EPS bearer status information comprises: EPS bearer identification, and session management status of the bearer.
8. An apparatus for implementing bearer status synchronization, the apparatus being disposed in a User Equipment (UE), the apparatus comprising: the device comprises a data receiving module, a bearing state management module, a resource deleting module, a message generating module and a data sending module; wherein,
the data receiving module is used for receiving a request signaling which is sent by a mobile management entity MME and carries EPS bearing state information of the MME, and sending the request signaling to the resource deleting module and the bearing state management module;
the bearing state management module is used for modifying the EPS bearing state information of the device to which the bearing state management module belongs according to the EPS bearing state information in the request signaling and sending the modified EPS bearing state information to the message generation module;
a resource deleting module, configured to delete the resource allocated to the inactive bearer according to the EPS bearer state information carried in the request signaling;
the message generating module is used for generating a response signaling carrying the EPS bearing state information of the device to which the message generating module belongs and sending the response signaling to the data sending module;
and the data sending module is used for sending the response signaling to the MME.
9. An apparatus for implementing bearer status synchronization, the apparatus being disposed in a mobility management entity MME, the apparatus comprising: the device comprises a message generation module, a data sending module, a data receiving module, a bearing state management module and a resource deleting module; wherein,
the message generation module is used for reading EPS bearing state information of a device to which the message generation module belongs from the bearing state management module, generating a request signaling carrying the EPS bearing state information, and sending the request signaling to the data sending module;
a data sending module, configured to send the request signaling to user equipment UE;
the data receiving module is used for receiving a response signaling which is sent by the UE and carries the EPS bearing state information of the UE, and sending the request signaling to the resource deleting module and the bearing state management module;
the bearing state management module is used for returning the EPS bearing state information to the message generation module when the message generation module reads the EPS bearing state information; the response signaling is also used for carrying out response signaling according to the EPS bearing state information of the device to which the response signaling belongs;
and the resource deleting module is used for deleting the resources allocated to the inactive state bearing according to the EPS bearing state information carried in the response signaling.
10. A system for implementing bearer state synchronization, the system comprising: user Equipment (UE) and a Mobile Management Entity (MME); wherein,
the MME is used for generating a request signaling carrying EPS bearing state information of the MME and sending the request signaling to corresponding UE; the UE is also used for deleting the resources allocated to the non-activated state bearing according to the received response signaling carrying the EPS bearing state information of the UE per se returned by the UE;
and the UE is used for deleting the resources allocated to the non-activated state bearer according to the received request signaling carrying the EPS bearer state information of the MME, generating a response signaling carrying the EPS bearer state information of the UE and sending the response signaling to the MME.
11. The system according to claim 10, wherein the UE side comprises: the device comprises a data receiving module, a bearing state management module, a resource deleting module, a message generating module and a data sending module; wherein,
the data receiving module is used for receiving a request signaling which is sent by the MME and carries EPS bearing state information of the MME and sending the request signaling to the resource deleting module and the bearing state management module;
the bearing state management module is used for modifying the EPS bearing state information of the device to which the bearing state management module belongs according to the EPS bearing state information in the request signaling and sending the modified EPS bearing state information to the message generation module;
a resource deleting module, configured to delete the resource allocated to the inactive bearer according to the EPS bearer state information carried in the request signaling;
the message generating module is used for generating a response signaling carrying the EPS bearing state information of the device to which the message generating module belongs and sending the response signaling to the data sending module;
and the data sending module is used for sending the response signaling to the MME.
12. The system according to claim 10 or 11, wherein the MME side comprises: the device comprises a message generation module, a data sending module, a bearing state management module, a data receiving module and a resource deleting module; wherein,
the message generation module is used for reading EPS bearing state information of a device to which the message generation module belongs from the bearing state management module, generating a request signaling carrying the EPS bearing state information, and sending the request signaling to the data sending module;
a data sending module, configured to send the request signaling to the UE;
the data receiving module is used for receiving a response signaling which is sent by the UE and carries the EPS bearing state information of the UE, and sending the request signaling to the resource deleting module and the bearing state management module;
the bearing state management module is used for returning the EPS bearing state information to the message generation module when the message generation module reads the EPS bearing state information; the response signaling is also used for carrying out response signaling according to the EPS bearing state information of the device to which the response signaling belongs;
and the resource deleting module is used for deleting the resources allocated to the inactive state bearing according to the EPS bearing state information carried in the response signaling.
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| CN103167479B (en) * | 2011-12-12 | 2016-04-20 | 鼎桥通信技术有限公司 | Realize that terminal is distant gets killed or the distant methods, devices and systems opened |
| CN106412851B (en) * | 2015-07-29 | 2019-07-23 | 普天信息技术有限公司 | A kind of group call region management method under SC-PTM system |
| CN108702732B (en) * | 2016-04-01 | 2021-11-19 | 英特尔公司 | Radio Access Network (RAN) originated paging message transmission method and apparatus |
| CN111586774B (en) | 2019-02-19 | 2021-06-29 | 华为技术有限公司 | Communication method and communication device |
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