CN102413561B - Attach message processing method and device under registration state - Google Patents
Attach message processing method and device under registration state Download PDFInfo
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- CN102413561B CN102413561B CN201110382287.5A CN201110382287A CN102413561B CN 102413561 B CN102413561 B CN 102413561B CN 201110382287 A CN201110382287 A CN 201110382287A CN 102413561 B CN102413561 B CN 102413561B
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Abstract
The invention discloses an adhesion message processing method and device under a registration state, relating to a communication technology. When an LTE (Long Term) core network determines that a user is in an EMM-REGISTERED state and an MME (Mobile Management Entity) receives an ATTACH REQUEST message sent by the user, an attach removal flow is initiated, and re-attachment of the user is waited, so that a user can normally access.
Description
Technical field
The present invention relates to the communication technology, under particularly relating to a kind of login state, adhere to message treatment method and device.
Background technology
Under normal circumstances, user has adhered to, LTE (Long Term Evolvement, Long Term Evolution) core network user is in EMM-REGISTERED (registration) state, and MME can not receive ATTACHREQUEST (attachment request) message of this user again.
At present, to the abnormal conditions occurred in user's attaching process, there is following processing method:
1) low layer mistake
If low layer mistake occurs in before UE received ATTACH COMPLETE (attachment completes) message, network terminal will interrupt attaching process, enter MM-DEREGI STERED state, and no longer ATTACH ACCEPT (attachment accepts) message is sent in repeating transmission.If be newly assigned with GUTI (GloballyUnique Temporary Identity in attaching process, overall situation temporary mark), MME (Mobility ManagementEntity, Mobility Management Entity) will think that new and old GUTI is effective, or until by network, old GUTI is thought that invalid EMM context (mobile management context) is released.
Distribute if old GUTI is not current MME, current MME does not need to preserve old GUTI.If ATTACH (attachment) message uses old GUTI, then network side needs by ID (Identifier, mark) process obtains the IMSI (International Mobile Subscriber Identity, IMSI International Mobile Subscriber Identity) of user.
2) protocol error
If the ATTACH REQUEST message protocols having mistake received, network side returns ATTACH REJECT (attachment refusal) message.Can by following EMM reason:
#96:invalid mandatory information (essential information is invalid);
#99:information element non-existent or not implemented (information does not exist or do not realize);
#100:conditional IE error (optional IE mistake); Or
#111:protocol error, unspecified (protocol error).
3) T3450 timer expiry
Timer expiry, network side will retransmit ATTACH ACCEPT message, and restart T3450 timer.
Usual re-transmission 4 times, if the 5th T3450 timer expiry, attaching process stops, and MME enters EMM-DEREGISTERED state.If be assigned with new GUTI in ATTACH ACCEPT message, MME will think that new and old GUTI is effective, or until by network, old GUTI is thought that invalid EMM context is released.
If ATTACH message uses old GUTI, network side needs the IMSI being obtained user by ID process.
4) after ATTACH ACCEPT message sends, when not receiving ATTACH COMPLETE message, have received ATTACH REQUEST message:
If receive ATTACH REQUEST message and receive ATTACH REQUEST message before, have multiple IE different, if ATTACH COMPLETE message does not also receive, then the ATTACH process before stopping, performs new ATTACH process;
If IE corresponding to twice ATTACH REQUEST message is identical, then resends ATTACHACCEPT message, and restart T3450 timer.The retransmission counter be associated with T3450 does not in this case increase.
5), when not sending ATTACH ACCEPT or ATTACH REJECT message, multiple ATTACHREQUEST message is received:
If receive ATTACH REQUEST message and receive ATTACH REQUEST message before, have multiple I E different, then the ATTACH process before stopping, performs new ATTACH process;
If it is identical with receiving ATTACH REQUEST message before to receive ATTACH REQUEST message, then the ATTACH process before continuing, ignores the ATTACH REQUEST message received.
6) ATTACH REQUEST message is received in EMM-REGISTERED state.
If receive ATTACH REQUEST message in EMM-REGISTERED state, network can initiate the public procedure of an EMM.If a UE adhered to sends an ATTACH REQUEST message, (EPS transmits context will to delete EMM context () and EPS bearer contexts, EPS:EvolvedPacket System evolved packet system), carry out new ATTACH REQUEST process.
But, if LTE core network user is in EMM-REGISTERED state, MME but may receive the ATTACH REQUEST message of up direct-sending message carrying, such as: after user's attaching process completes, LTE core network user is in EMM-REGISTERED state, and due to user radio link failure, user has carried out again a RRC (wireless link connection) and has reshuffled, the process re-established, re-establishing successfully, terminal re-starts attachment, exist because RRC connects, so use direct-sending message carrying NAS (Non-Access Stratum signaling) message when adhering to, send attachment request, after core net receives this attachment request, if directly message is abandoned, ENB (evolved NodeB can be caused, evolution base station) resource and Internet resources cannot discharge again, if refusal does not have again suitable Reason For Denial, can not delete and there is resource and proceed ATTACH flow process.
Therefore, when LTE core network user is in EMM-REGI STERED state, MME receives the ATTACH REQUEST message that this user sends, then network side cannot process this ATTACH REQUEST message.
Summary of the invention
The embodiment of the present invention adheres to message treatment method and device under providing a kind of login state, and to realize when LTE core network determines that this user is in EMM-REGISTERED state, MME receives the process after the ATTACH REQUEST message of this user transmission.
Adhere to message treatment method under a kind of login state, comprising:
After determining that user's attaching process completes, determine that described user is for login state;
Receive direct-sending message, and obtain in described direct-sending message the attachment request of the described user carried;
Attachment removal flow process is initiated to described user.
Adhere to message processing apparatus under a kind of login state, comprising:
Determining unit, for determining that user's attaching process completes, determines that described user is for login state;
Receiving element, for receiving direct-sending message, and obtains in described direct-sending message the attachment request of the described user carried;
Attachment removal unit, for initiating attachment removal flow process to described user.
The embodiment of the present invention adheres to message treatment method and device under providing a kind of login state, LTE core network determines that this user is in EMM-REGISTERED state, and MME receive this user send ATTACHREQUEST message time, initiate attachment removal flow process, wait for that user adheres to again, thus user can normally be accessed.
Accompanying drawing explanation
Message treatment method flow chart is adhered under the login state that Fig. 1 provides for the embodiment of the present invention;
Message treatment method flow chart is adhered under the more concrete login state that Fig. 2 provides for the embodiment of the present invention;
Message processing apparatus structural representation is adhered under the login state that Fig. 3 provides for the embodiment of the present invention.
Embodiment
The embodiment of the present invention adheres to message treatment method and device under providing a kind of login state, LTE core network determines that this user is in EMM-REGISTERED state, and MME receive this user send ATTACHREQUEST message time, initiate attachment removal flow process, wait for that user adheres to again, thus user can normally be accessed.
As shown in Figure 1, adhere to message treatment method under the login state that the embodiment of the present invention provides to comprise:
Step S101, determine that user's attaching process completes after, determine that user is login state;
Step S102, reception direct-sending message, and obtain the attachment request of this user carried in direct-sending message;
Step S103, attachment removal flow process is initiated to user.
Because MME is after the attachment request of user's transmission receiving login state, first attachment removal flow process is initiated, so can discharge once adhering to before this user shared resource, so that when user adheres to again, this user normally can be accessed, the waste of Internet resources can not be caused simultaneously.
After user's attaching process completes, LTE core network user is in EMM-REGI STERED state, normally due to user radio link failure, and the process causing user to carry out again RRC reshuffling, re-establish, re-establishing successfully, user re-starts attachment.
When again adhering to, exist because RRC connects, so usually use direct-sending message carrying NAS message, send attachment request, so in step s 102, the attachment request that MME receives normally is sent by direct-sending message.
After attachment removal flow process terminates, MME waits for the attachment request that user sends again, and according to this attachment request for this user carries out attachment flow.
Under normal circumstances, when user send attachment ask and receive the detach request that network side sends time, then execution attachment removal flow process.In order to make user can after attachment removal flow process, resend attachment request and initiate attachment flow, can be in step s 103, the detach request of reason for " reattach (again adhering to) " is sent to user, user, after receiving the detach request of this reason, will resend attachment request after attachment removal flow process.
Be specifically described adhering to message treatment method under login state below in conjunction with Fig. 2, the method comprises:
Step S201, user's attaching process complete;
Step S202, UE (User Equipment, subscriber equipment) send attachment request to base station;
This attachment request is directly transferred to MME by step S203, base station;
Step S204, MME send detach request to UE after receiving the attachment request that UE direct transferred by base station, this detach request detach request that can be reason be " reattach ";
Step S205, MME send to gateway and delete resource request message;
This deletion resource request message is forwarded to PDN (packet data network) gateway by step S206, gateway;
Step S207, PDN Gateway return deletion resource response message to gateway after deleting respective resources;
Deletion resource response message is transmitted to MME by step S208, gateway;
The attachment removal that step S209, MME reception UE returns accepts message.
By above-mentioned flow process, namely complete detachment process, namely MME sends detach request to user and deletes gateway resource, thus realizes attachment removal.Wherein, delete gateway resource specifically to comprise: send to gateway and delete resource request; Gateway sends to PDN Gateway and deletes resource request; Receive the deletion resource response returned by gateway after PDN Gateway deletes resource.
By the processing method that the embodiment of the present invention provides, both can the resource of releasing network side and base station, ensure that again user can initiate attachment request again, follow-uply can normally to access.
The embodiment of the present invention also corresponding a kind of login state is provided under adhere to message processing apparatus, as shown in Figure 3, comprising:
Determining unit 301, for determining that user's attaching process completes, determines that user is login state;
Receiving element 302, for receiving direct-sending message, and obtains the attachment request of this user carried in direct-sending message;
Attachment removal unit 303, for initiating attachment removal flow process to user.
Wherein, attachment removal unit 303 specifically for:
Detach request is sent to user;
Delete gateway resource.
Concrete, in order to make user can after attachment removal flow process, resend attachment request and initiate attachment flow, attachment removal unit 303 sends detach request to user, can be specially:
Sending reason to user is the detach request of again adhering to.
Attachment removal unit 303 is deleted gateway resource and is specifically comprised:
Send to gateway and delete resource request;
Gateway sends to PDN Gateway and deletes resource request;
Receive the deletion resource response returned by gateway after PDN Gateway deletes resource.
After attachment removal flow process terminates, usual user can resend attachment request, now, also comprises in this device:
Adhesion unit, for after attachment removal terminates, receives the attachment request that user sends, and starts the attaching process of user.
The embodiment of the present invention adheres to message treatment method and device under providing a kind of login state, LTE core network determines that this user is in EMM-REGISTERED state, and MME receive this user send ATTACHREQUEST message time, initiate attachment removal flow process, wait for that user adheres to again, thus user can normally be accessed.
Obviously, those skilled in the art can carry out various change and modification to the present invention and not depart from the spirit and scope of the present invention.Like this, if these amendments of the present invention and modification belong within the scope of the claims in the present invention and equivalent technologies thereof, then the present invention is also intended to comprise these change and modification.
Claims (6)
1. adhere to a message treatment method under login state, it is characterized in that, comprising:
After determining that user's attaching process completes, determine that described user is for login state;
Receive direct-sending message, and obtain in described direct-sending message the attachment request of the described user carried;
Attachment removal flow process is initiated to described user, specifically comprises:
Sending reason to user is the detach request of again adhering to;
Delete gateway resource.
2. the method for claim 1, is characterized in that, described deletion gateway resource specifically comprises:
Send to gateway and delete resource request;
Described gateway sends to packet data network PDN Gateway and deletes resource request;
Receive the deletion resource response returned by described gateway after described PDN Gateway deletes resource.
3. method as claimed in claim 1 or 2, is characterized in that, also comprise:
After attachment removal terminates, receive the attachment request that user sends, and start the attaching process of described user.
4. adhere to a message processing apparatus under login state, it is characterized in that, comprising:
Determining unit, for determining that user's attaching process completes, determines that described user is for login state;
Receiving element, for receiving direct-sending message, and obtains in described direct-sending message the attachment request of the described user carried;
Attachment removal unit, for initiating attachment removal flow process to described user, specifically for:
Sending reason to user is the detach request of again adhering to;
Delete gateway resource.
5. device as claimed in claim 4, it is characterized in that, described attachment removal element deletion gateway resource specifically comprises:
Send to gateway and delete resource request;
Described gateway sends to packet data network PDN Gateway and deletes resource request;
Receive the deletion resource response returned by described gateway after described PDN Gateway deletes resource.
6. device as claimed in claim 4, is characterized in that, also comprise:
Adhesion unit, for after attachment removal terminates, receives the attachment request that user sends, and starts the attaching process of described user.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201110382287.5A CN102413561B (en) | 2011-11-25 | 2011-11-25 | Attach message processing method and device under registration state |
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| CN201110382287.5A CN102413561B (en) | 2011-11-25 | 2011-11-25 | Attach message processing method and device under registration state |
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| CN102413561A CN102413561A (en) | 2012-04-11 |
| CN102413561B true CN102413561B (en) | 2015-04-08 |
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| JP6829308B2 (en) | 2016-10-12 | 2021-02-10 | 華為技術有限公司Ｈｕａｗｅｉ Ｔｅｃｈｎｏｌｏｇｉｅｓ Ｃｏ．，Ｌｔｄ． | Session management method and session management network elements |
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| CN101026564A (en) * | 2007-02-05 | 2007-08-29 | 华为技术有限公司 | Method and system for realizing load migration in pool area |
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| CN102123375A (en) * | 2010-01-11 | 2011-07-13 | 华为终端有限公司 | Mobility management method, GPRS (general packet radio service) support node or mobility management entity and terminal |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP4608830B2 (en) * | 2001-08-22 | 2011-01-12 | 日本電気株式会社 | Mobile communication system, communication control method, mobile terminal used therefor, and control method therefor |
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Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101018395A (en) * | 2006-02-09 | 2007-08-15 | 上海原动力通信科技有限公司 | Method for recovering the IP address and network resource occupied by the user device |
| CN101026564A (en) * | 2007-02-05 | 2007-08-29 | 华为技术有限公司 | Method and system for realizing load migration in pool area |
| CN101938850A (en) * | 2009-07-03 | 2011-01-05 | 大唐移动通信设备有限公司 | Method, system and device for releasing bearer resources |
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