CN101902732B - Method and system for synchronizing EPS (Evolved Packet System) bearer context statuses - Google Patents
Method and system for synchronizing EPS (Evolved Packet System) bearer context statuses Download PDFInfo
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Abstract
The invention discloses a method and a system for synchronizing EPS (Evolved Packet System) bearer context statuses. The method comprises the following steps of: informing an EMM (EPS Mobility Management) module to initiate a TAU flow when an ESM (EPS Session Management) module determines that the EPS bearer context of a UE (User Equipment) side is de-activated and the EPS bearer context of a network side is activated; and initiating the TAU flow by the EMM so as to synchronize the EPS bearer context statuses of the UE side and the network side. According to the technical scheme of the invention, the bearer context statuses of the UE side and the network side can be synchronized as soon as possible so as to avoid adverse effects of unnecessary charging generated by sending redundant data on users.
Description
Technical field
The present invention relates to the communications field, in particular to a kind of synchronous method and system of grouping domain system (Evolved Packet System, referred to as EPS) bearer context statuses of evolution.
Background technology
According to consensus standard (Long Term Evolution (the Long Time Evolution of current land radio access web (Evolved UMTS is referred to as E-UTRAN), referred to as LTE) 24.301V920 and V850) understanding, the deexcitation of EPS bearer context (EPS Bearer Context) is normally realized by corresponding signaling process, such as, subscriber equipment (User Equipment, referred to as UE) the EPS Bearer Context Deactivation flow process initiated of Requested Bearer Resource Modification flow process and network side, adopt above-mentioned flow process can reach UE side and the network side contextual object of releasing bearing simultaneously.But in practical application, UE side and network equipment cannot proper communications in some cases, now may there is the situation of local deexcitation (namely without aforementioned complete signaling process alternately to delete network side and UE side bearer context simultaneously, only at UE side or network side deleting bearing context).
According to the understanding to agreement, for the local deexcitation that network side occurs: be connected state if current, Mobility Management Entity (Mobile Management Entity, be called for short MME) can discharge by message informing enode (E-NodeB) data surface carrying of eating dishes without rice or wine accordingly, thus making UE side also carry out local deexcitation, both sides are able to synchronously; And if local deexcitation occurs in Idle state lower network side, then can when entering connected state, because setting up Data Radio Bearer (Data Radio Bearer, referred to as DRB) time can not set up DRB corresponding to the unactivated bearer context of network side, therefore can the unactivated bearer context deexcitation of network side by UE side activating, both sides are able to synchronously.After the local deexcitation of network side occurs, under connected state, (or when entering connected state) can not cause UE side activating and the unactivated situation of network side to occur.
In correlation technique, UE side deexcitation majority be also in order to synchronous its with the contextual state of network side load, but several situation makes an exception below:
(1) when UE initiates PDN connection disconnection (disconnect) flow process, receive the PDN DISCONNECT REJECT message that network side returns, if the EPS session management carried in the refuse information of network side (EPS Session Management, referred to as ESM) Cause is not #49 " last PDN disconnection not allowed ", then UE side is not by by the signaling process between MME, directly by the default bearer in this PDN connection and the local deexcitation of dedicated bearer: when network side returns PDN DISCONNECT REJECT message, corresponding bearer context may be in state of activation, and after return messages, also not necessarily local deactivating operation can be done, therefore likely there is UE side and the inconsistent situation of network side load context state under this scene,
(2) when UE initiates PDN connection disconnection (disconnect) flow process, after timer T3492 the 5th time-out, UE side is not by the signaling process between MME, directly by the default bearer in this PDN connection and the local deexcitation of dedicated bearer: if network side carries out not receiving PDN disconnect request in process in whole flow process, then network side is unknowable to the deexcitation behavior of UE side, now will cause the deexcitation and network side still activates the inconsistent situation of this state of this bearer context of UE side;
(3) UE initiates bearing resource amendment (Bearer Resource Modification) flow process, after timer T3481 the 5th time-out, if the object of UE start flow is the whole resources of release corresponding to this bearer context, then UE is not by the signaling process between MME, the corresponding bearer context of local deexcitation: if network side does not receive Bearer Resource Modification Request message in whole process, then network side is unknowable to the deexcitation behavior of UE side, now can cause UE side and network side load context state inconsistent,
In above-mentioned three kinds of situations, may occur that UE side bearer context is in unactivated state, and network side load context is in this inconsistent situation of state of activation, describe based on Current protocol: under connected state, UE side activates without corresponding message or signaling process informing network side bearer context that (this context is deactivated, and therefore cannot to initiate the signaling process of ESM module on this context synchronously this to carry out for UE; AS layer does not have corresponding message to be correlated with DRB state to network side for UE side active feedback yet; Need under scene like the non-specified class of agreement to initiate TAU flow process); And under if this deexcitation occurs in Idle state, in follow-up Service Request message when entering connected state except L3 message header, there is no extra cell with the state of activation of current UE side, informing network side bearer context (TAU flow process not necessarily can be initiated, and EPS bearer context status cell is wherein optional cell);
To sum up, this bearer context is in the un-activation of UE side, and only carry EPS bearer context status cell at upper once TAU at the inconsistent state that network side activates, or after being refused by UE when subsequent network side initiatively operates this bearer context, network side just can know that this bearer context is be in deactivation status in UE side, thus carries out local deexcitation to reach the synchronous of network side and UE side bearer context state of activation.
Before network side carries out local deexcitation synchronous itself and UE side bearer context statuses, the context state of UE side and network side load is inconsistent, and during this period of time, UE side cannot send upstream data in this carrying; But network side then can send downlink data, and the flow that produces of the downlink data sent period and online duration carry out corresponding charging.
Summary of the invention
For when in correlation technique, the EPS bearer context statuses of UE side and network side is inconsistent, network side sends redundant data and produces the problem of unnecessary charging, the invention provides a kind of synchronous method and system of EPS bearer context statuses, to solve the problem one of at least.
According to an aspect of the present invention, a kind of synchronous method of EPS bearer context statuses is provided.
Synchronous method according to EPS bearer context statuses of the present invention comprises: when ESM module determines that the EPS bearer context deexcitation of UE side and the EPS bearer context of network side are in state of activation, notice EMM module initiates TAU flow process; EMM module initiates TAU flow process, with the EPS bearer context statuses of simultaneous user's equipment side and network side.
According to a further aspect in the invention, a kind of synchro system of EPS bearer context statuses is provided.
Synchro system according to EPS bearer context statuses of the present invention comprises: UE, for when determining the EPS bearer context deexcitation of UE side, the EPS bearer context of network side is in state of activation, initiate tracking area update TAU flow process, with the EPS bearer context statuses of simultaneous user's equipment side and network side.
Pass through the present invention, when UE side deexcitation EPS Bearer Context may cause UE side and network side load context state is inconsistent, by triggering EPS Mobility Management (EPS Mobility Management, referred to as EMM) module initiates TAU flow process, with the bearer context statuses of synchronous UE side and network side.This treatment mechanism, can the bearer context statuses of synchronous UE side as early as possible and network side, avoids sending the harmful effect that unnecessary charging that redundant data produces produces user.
Accompanying drawing explanation
Accompanying drawing described herein is used to provide a further understanding of the present invention, and form a application's part, schematic description and description of the present invention, for explaining the present invention, does not form inappropriate limitation of the present invention.In the accompanying drawings:
Fig. 1 is the flow chart of the synchronous method of EPS bearer context statuses according to the embodiment of the present invention;
Fig. 2 is the flow chart of TAU Signalling exchange according to the preferred embodiment of the invention;
Fig. 3 is that PDN connects the unaccepted process chart of disconnection process according to the preferred embodiment of the invention;
Fig. 4 is that PDN connects the overtime process chart of timer in disconnection process 5 times according to the preferred embodiment of the invention;
Fig. 5 is for according to the preferred embodiment of the invention by process chart that timer in the resource process corresponding to Bearer Resource Modification flow process request releasing bearing 5 times is overtime;
Fig. 6 is the structured flowchart of the synchro system of EPS bearer context statuses according to the preferred embodiment of the invention.
Embodiment
Hereinafter also describe the present invention in detail with reference to accompanying drawing in conjunction with the embodiments.It should be noted that, when not conflicting, the embodiment in the application and the feature in embodiment can combine mutually.
Fig. 1 is the flow chart of the synchronous method of EPS bearer context statuses according to the embodiment of the present invention.As shown in Figure 1, the synchronous method of this EPS bearer context statuses comprises:
When the EPS bearer context deexcitation of step S102:ESM module determination user equipment (UE) side and the EPS bearer context of network side are in state of activation, notice EMM module initiates tracking area update TAU flow process;
Step S104:EMM module initiates TAU flow process, with the EPS bearer context statuses of simultaneous user's equipment side and network side.
In correlation technique, bearer context is in the un-activation of UE side, and only carry EPS bearer context status cell at upper once TAU at the inconsistent state that network side activates, or after being refused by UE when subsequent network side initiatively operates this bearer context, network side just can know that this bearer context is be in deactivation status in UE side, thus carries out local deexcitation to reach the synchronous of network side and UE side bearer context state of activation.Adopt the method that above-described embodiment provides, can when in the EPS bearer context deexcitation of ESM module determination user equipment (UE) side, the EPS bearer context of network side be in state of activation, notify that EMM module triggers TAU flow process immediately, the bearer context statuses of synchronous UE side and network side as early as possible, the harmful effect that the unnecessary charging avoiding transmission redundant data to produce produces user.
Preferably, above-mentioned steps S104 may further include following process:
(1) EMM module structure TAU request message be sent to network side, wherein, TAU request message carries EPS bearer context statuses cell;
Wherein, this message also must be carried EPS Bearer Context status cell and be act as synchronous EPS bearer context statuses to indicate this TAU except comprising and forcing cell; also should use existing safe context; fill in security header type for " integrity protection and encryption "; fill in the message authentication code Message authentication code and sequence number Sequence number that calculate gained; avoid network again to initiate security process, accelerate the speed of TAU flow process.
(2) network element of network side is still in the EPS bearer context of state of activation according to the deexcitation of EPS bearer context statuses cell, and wherein, this EPS bearer context is in the deexcitation of UE side.
In preferred implementation process, above-mentioned steps (2) may further include following process:
(2.1) TAU request message is sent to MME by evolution base station;
(2.2) MME resolves TAU request message, send RAB (the E-utran Radio Access Bearer of evolution to enode according to EPS bearer context statuses cell, referred to as E-RAB) release order, and send deleting bearing instruction to gateway;
(2.3) enode by wireless heterogeneous networks (Radio Resource Control, referred to as RRC) connect reprovision instruction release specified by DRB resource;
(2.4) deleting bearing instruction is forwarded to packet data network gateway by gateway, to notify that PCRF discharges resource corresponding to deleting bearing instruction;
(2.5) deleting bearing request is sent to MME via gateway by packet data network gateway, to notify the Data Radio Bearer that evolution base station release deleting bearing instruction is corresponding and bearer context corresponding to deexcitation deleting bearing instruction;
(2.6) gateway receives the deleting bearing response coming from MME, and deletes resource corresponding to releasing bearing instruction.
Above-mentioned preferred implementation process is described in detail below in conjunction with Fig. 2.
Fig. 2 is the flow chart of TAU Signalling exchange according to the preferred embodiment of the invention.As shown in Figure 2, TAU Signalling exchange flow process mainly comprises following process according to the preferred embodiment of the invention:
Step S202:EMM module receives EMM module ESM module _ TAU_REQ primitive that user side ESM module issues, and triggers it and initiates the EPS Bearer Context state that TAU flow process comes synchronous UE side and network side, EMM module structure TAU Request message (wherein, this message also must be carried EPS Bearer Context status cell and be act as synchronous EPS bearer context statuses to indicate this TAU except comprising and forcing cell, also should use existing safe context, fill in security header type for " integrity protection and encryption ", fill in the message authentication code Message authentication code and sequence number Sequence number that calculate gained, network is avoided again to initiate security process, accelerate the speed of TAU flow process), send to enode (E-NodeB) to initiate TAU flow process,
Step S204:E-NodeB selects correct MME, and TAU Request message (i.e. above-mentioned TAU request message) is sent to MME;
Step S206:MME resolves TAU Request message, judges that this TAU is synchronous EPS bearer context statuses, so initiate the deexcitation flow process of this bearer context; Sending E-RAB to enode releases order (wherein, carry TAU and accept message), and send deleting bearing instruction (Delete Bearer Command) the deexcitation UE side bearer context that still activates of deexcitation but network side to S-GW;
Enode sends RRC to UE and connects reallocation message, carries TAU and accept message in reprovision;
The DRB of the specified release of UE side release enode, returns RRC connection reprovision to enode and completes message;
TAU process terminates, and UE side direction enode sends up direct-sending message, carries TAU Complete message in this message, confirms that it has received TAU Accept message;
Step S208: enode returns TAU Complete message to MME.
Delete Bearer Command is sent to P-GW by step S210:S-GW;
Step S212: if employ policy and charging control (Policy Charging Control, referred to as PCC), then P-GW notification strategy and charge execution function (Policy and Charging Enforcement Function, referred to as PCEF) initiate the release that IP-CAN Session Modification flow process notifies PCRF respective resources, PCRF sends new PCC decision to P-GW;
Step S214:P-GW sends deleting bearing request (Delete Bearer Request) this carrying of deexcitation to S-GW;
Step S216:S-GW sends Delete Bearer Request to MME;
Step S218:MME returns deleting bearing response (Delete Bearer Response) to S-GW;
Step S220:S-GW discharges the related resource corresponding to this carrying, and returns to P-GW the deexcitation that Delete Bearer Response confirms this carrying.
Preferably, the EMM module of user equipment side, in one of following situation, determines the EPS bearer context deexcitation of UE side and the EPS bearer context of network side is in state of activation:
(1) UE side initiation packet data network PDN connects disconnection process, and receive PDN that network side returns and connect and disconnect refuse information, when PDN connect disconnect the Reason For Denial that carries of refuse information be not last PDN connect disconnect be not allowed to time, PDN is directly connected corresponding whole EPS bearer context deexcitation by UE side;
(2) PDN connection disconnection process is initiated in UE side, and after first timer the 5th time-out corresponding with this flow process, PDN is directly connected corresponding whole EPS bearer context deexcitation by UE side;
(3) bearing resource modification process is initiated in UE side, after second timer the 5th time-out corresponding with this flow process, when the object initiating bearing resource modification process is the resource of this carrying correspondence of request release, UE side is directly by whole EPS bearer context deexcitation of this carrying correspondence.
It should be noted that, in other situations removing above-mentioned three kinds of situations, also may there is the EPS bearer context deexcitation of UE side and the EPS bearer context of network side is in state of activation, i.e. technical scheme provided by the invention, also should be applicable to other application scenarioss.
Under describing above-mentioned three kinds of situations respectively below in conjunction with Fig. 3, Fig. 4 and Fig. 5, realize the processing procedure that the EPS bearer context statuses of subscriber equipment (UE) side and network side is synchronous.
Fig. 3 is that PDN connects the unaccepted process chart of disconnection process according to the preferred embodiment of the invention.As shown in Figure 3, this flow process mainly comprises following process:
Step S302:UE side is initiated PDN and is connected disconnection process, after sending PDN connection disconnection request (PDN DISCONNECT REQUEST), waits for receiveing the response of network side;
Step S304:UE receives PDN connection disconnection refuse information (PDN DISCONNECT REJECT) that network side returns;
Step S306: if the ESM module Cause (i.e. Reason For Denial) carried in PDN DISCONNECT REJECT message is #49 " last PDN disconnection not allowed " (namely last PDN connection disconnects and not being allowed to), then PDN connects disconnection process failure, and flow process terminates; Otherwise go to step S308;
Step S308:ESM module is by all local deexcitation of all EPS Bearer Context in this PDN connection, and deleting bearing context-related information;
Step S310:ESM module asks EMM module to initiate TAU flow process by interlayer primitive EMM module ESM module _ TAU_REQ.
Afterwards, EMM module initiates TAU flow process, and the signalling interactive process of TAU flow process see Fig. 2, can repeat no more herein.
Fig. 4 is that PDN connects the overtime process chart of timer in disconnection process 5 times according to the preferred embodiment of the invention.As shown in Figure 4, this flow process mainly comprises following process:
Step S402:UE side is initiated PDN and is connected disconnection process, after sending PDNDISCONNECT REQUEST, waits for receiveing the response of network side;
Step S404: connect before timer corresponding to disconnection process (timer T3492) time-out with this PDN, UE does not receive receiveing the response of network side;
Step S406: if above-mentioned timer expiry number of times is less than 5 times, then again initiate PDN and connect disconnection process; If otherwise timer the 5th is overtime, then go to step S408;
Step S408:ESM module is by all local deexcitation of all EPS Bearer Context in this PDN connection, and deleting bearing context-related information;
Step S410:ESM module asks EMM module to initiate TAU flow process by interlayer primitive EMM module ESM module _ TAU_REQ.
Afterwards, EMM module initiates TAU flow process, and the signalling interactive process of TAU flow process see Fig. 2, can repeat no more herein.
Fig. 5 is for according to the preferred embodiment of the invention by process chart that timer in the resource process corresponding to Bearer Resource Modification flow process request releasing bearing 5 times is overtime.As shown in Figure 5, this flow process mainly comprises following process:
Bearing resource amendment (Bearer Resource Modification) flow process is initiated in step S502:UE side, after sending Bearer resource modification request, waits for receiveing the response of network side;
Step S504: timer (timer T3481) time-out that this bearing resource modification process is corresponding, before T3481 time-out, UE does not receive the response message of network side;
Step S506: if timer T3481 expired times are less than 5 times, then initiate Bearer Resource Modification flow process again; If otherwise timer T3481 the 5th is overtime, then go to step S508;
Step S508: judge whether this Bearer Resource Modification flow process discharges the relevant resource of this carrying to ask: if not, then flow process failure, flow process terminates; Otherwise, go to step S510;
Step S510:ESM module by local for this carrying deexcitation, and deletes the relevant information of this bearer context;
Step S512:ESM module asks EMM module to initiate TAU flow process by interlayer primitive EMM module ESM module _ TAU_REQ;
Afterwards, EMM module initiates TAU flow process, and the signalling interactive process of TAU flow process see Fig. 2, can repeat no more herein.
Present invention also offers a kind of synchro system of EPS bearer context statuses, this synchro system mainly comprises: subscriber equipment (UE) 60.
Subscriber equipment 60, for when the EPS bearer context of network side is in state of activation determining the EPS bearer context deexcitation of user equipment (UE) side, initiates TAU flow process, with the EPS bearer context statuses of simultaneous user's equipment side and network side.
In preferred implementation process, when the EPS bearer context deexcitation of the ESM module determination user equipment (UE) side of UE side and the described EPS bearer context of network side are in state of activation, notice EMM module initiates tracking area update TAU flow process; This EMM module initiates described TAU flow process, with the EPS bearer context statuses of synchronous described user equipment side and network side.
Adopt the system that above-described embodiment provides, when EPS bearer context deexcitation in ESM module determination user equipment (UE) side and the EPS bearer context of network side are in state of activation, notify that EMM module triggers TAU flow process immediately, can the bearer context statuses of synchronous UE side and network side as early as possible, avoid sending the harmful effect that unnecessary charging that redundant data produces produces user.
Preferably, subscriber equipment 60, can also be used for constructing TAU request message and being sent to network side, and wherein, TAU request message carries EPS bearer context statuses cell; System can also comprise: the network element of network side, and for being still in the EPS bearer context of state of activation according to the deexcitation of EPS bearer context statuses cell, wherein, this EPS bearer context is in the deexcitation of UE side.
In preferred implementation process, the EMM module of user equipment side initiates TAU flow process, in the TAU request message of initiating, carry EPS bearer context status cell, this cell represents which EPS bearer context deexcitation in UE side, and which is also in state of activation.The content that network side indicates according to EPS bearer context status cell, deexcitation is still in the EPS bearer context of state of activation, and wherein, this EPS bearer context is in the deexcitation of UE side.By above-mentioned process, can the synchronous state of EPS bearer context between UE side and network side.
In preferred implementation process, TAU request message can also carry following information one of at least: Security Context Information, EPS updating type information.
Wherein, use existing safe context, fill in security header type for " integrity protection and encryption ", fill in the message authentication code Message authentication code and sequence number Sequence number that calculate gained, avoid network again to initiate security process, the speed of TAU flow process can be accelerated; Equally can arrange " Active Flag " with initiating under other situations TAU; Carrying EPS Bearer Context Status cell to indicate this TAU is synchronous EPS Bearer Context state, to reduce in TAU process Signalling exchange between network side each network element as far as possible.
Preferably, as shown in Figure 6, the network element of network side may further include: evolution base station 70, for TAU request message is sent to MME; MME 72, for resolving TAU request message, and sends deleting bearing instruction according to EPS bearer context statuses cell to gateway; Gateway 74, for deleting bearing instruction is forwarded to packet data network gateway, to notify that PCRF discharges resource corresponding to deleting bearing instruction, receives the deleting bearing response coming from MME, and discharges resource corresponding to deleting bearing instruction; Packet data network gateway 76, for deleting bearing request being sent to MME via gateway, to notify the Data Radio Bearer that evolution base station release deleting bearing instruction is corresponding and bearer context corresponding to deexcitation deleting bearing instruction.
In above-mentioned UE side and network side, the TAU Signalling exchange flow process of each network element specifically see Fig. 2, can repeat no more herein.
Preferably, subscriber equipment, in one of following situation, determines the EPS bearer context deexcitation of UE side and the EPS bearer context of network side is in state of activation:
(1) UE side initiation packet data network PDN connects disconnection process, and receive PDN that network side returns and connect and disconnect refuse information, when PDN connect disconnect the Reason For Denial that carries of refuse information be not the last PDN connect disconnect be not allowed to time, PDN is directly connected corresponding whole EPS bearer context deexcitation by UE side;
(2) PDN connection disconnection process is initiated in UE side, and after first timer the 5th time-out corresponding with this flow process, PDN is directly connected corresponding whole EPS bearer context deexcitation by UE side;
(3) bearing resource modification process is initiated in UE side, after second timer the 5th time-out corresponding with this flow process, when the object initiating bearing resource modification process is the resource of this carrying correspondence of request release, UE side is directly by whole EPS bearer context deexcitation of this carrying correspondence.
It should be noted that, in other situations removing above-mentioned three kinds of situations, also may there is the EPS bearer context deexcitation of UE side and the EPS bearer context of network side is in state of activation, i.e. technical scheme provided by the invention, also should be applicable to other application scenarioss.
In above-mentioned three kinds of situations, the processing procedure realizing the EPS bearer context statuses of subscriber equipment (UE) side and network side synchronous specifically see Fig. 3 to Fig. 5, can repeat no more herein.
It should be noted that the synchronization scenario of EPS bearer context statuses provided by the invention, not only go for LTE standard, for other 3G standards, be suitable for too.
In sum, by above-described embodiment provided by the invention, when UE side deexcitation EPS bearer context may cause UE side and net side bearer context statuses is inconsistent, initiate TAU flow process by triggering EMM module, with the bearer context statuses of synchronous UE side with net side.Adopt this treatment mechanism, can the bearer context statuses of synchronous UE side and net side as soon as possible, avoid sending the harmful effect that unnecessary charging that redundant data produces produces user, effectively improve Consumer's Experience.
Obviously, those skilled in the art should be understood that, above-mentioned of the present invention each module or each step can realize with general calculation element, they can concentrate on single calculation element, or be distributed on network that multiple calculation element forms, alternatively, they can realize with the executable program code of calculation element, thus, they can be stored and be performed by calculation element in the storage device, and in some cases, step shown or described by can performing with the order be different from herein, or they are made into each integrated circuit modules respectively, or the multiple module in them or step are made into single integrated circuit module to realize.Like this, the present invention is not restricted to any specific hardware and software combination.
The foregoing is only the preferred embodiments of the present invention, be not limited to the present invention, for a person skilled in the art, the present invention can have various modifications and variations.Within the spirit and principles in the present invention all, any amendment done, equivalent replacement, improvement etc., all should be included within protection scope of the present invention.
Claims (6)
1. a synchronous method for the grouping domain system EPS bearer context statuses of evolution, is characterized in that, comprising:
When the EPS bearer context deexcitation of EPS session management ESM module determination user equipment (UE) side and the described EPS bearer context of network side are in state of activation, notice EPS Mobility Management EMM module initiates tracking area update TAU flow process;
Described EMM module initiates described TAU flow process, with the EPS bearer context statuses of synchronous described user equipment side and network side;
Wherein, described ESM module, in one of following situation, determines the EPS bearer context deexcitation of described UE side and the described EPS bearer context of described network side is in state of activation:
Described UE side initiation packet data network PDN connects disconnection process, and receive PDN that described network side returns and connect and disconnect refuse information, when described PDN connect disconnect Reason For Denial that refuse information carries be not last PDN connect disconnect be not allowed to time, described PDN is directly connected corresponding whole EPS bearer context deexcitation by described UE side;
Described UE side is initiated PDN and is connected disconnection process, and after first timer the 5th time-out corresponding with this flow process, described PDN is directly connected corresponding whole EPS bearer context deexcitation by described UE side;
Bearing resource modification process is initiated in described UE side, after second timer the 5th time-out corresponding with this flow process, when the object initiating described bearing resource modification process is the resource of this carrying correspondence of request release, described UE side is directly by whole EPS bearer context deexcitation of this carrying correspondence.
2. method according to claim 1, is characterized in that, described EMM module initiates described TAU flow process, comprises with the EPS bearer context statuses of synchronous described user equipment side and network side:
Described EMM module structure TAU request message is also sent to described network side, and wherein, described TAU request message carries EPS bearer context statuses cell;
The network element of described network side is still in the EPS bearer context of state of activation according to the deexcitation of described EPS bearer context statuses cell, wherein, this EPS bearer context is in the deexcitation of described UE side.
3. method according to claim 2, is characterized in that, the EPS bearer context that the network element of described network side is still in state of activation according to the deexcitation of described EPS bearer context statuses cell comprises:
Described TAU request message is sent to Mobility Management Entity MME by evolution base station;
Described MME resolves described TAU request message, and releases order according to the RAB that described EPS bearer context statuses cell sends evolution to enode, and sends deleting bearing instruction to gateway;
Described evolution base station connects the Data Radio Bearer resource specified by reprovision instruction release by radio resource control RRC;
Described deleting bearing instruction is forwarded to packet data network gateway by described gateway, discharges resource corresponding to described deleting bearing instruction with notification strategy and charging rule functions PCRF entity;
Deleting bearing request is sent to described MME via described gateway by described packet data network gateway, to notify that described evolution base station discharges Data Radio Bearer corresponding to described deleting bearing instruction and the bearer context that described in deexcitation, deleting bearing instruction is corresponding;
Described gateway receives the deleting bearing response coming from described MME, and deletes resource corresponding to described releasing bearing instruction.
4. a synchro system for the grouping domain system EPS bearer context statuses of evolution, is characterized in that, comprising:
User equipment (UE), for when the EPS bearer context of network side is in state of activation determining the EPS bearer context deexcitation of UE side, initiates tracking area update TAU flow process, with the EPS bearer context statuses of synchronous described user equipment side and network side;
Described UE, in one of following situation, determines the EPS bearer context deexcitation of described UE side and the described EPS bearer context of described network side is in state of activation:
Described UE side initiation packet data network PDN connects disconnection process, and receive PDN that described network side returns and connect and disconnect refuse information, when described PDN connect disconnect Reason For Denial that refuse information carries be not the last PDN connect disconnect be not allowed to time, described PDN is directly connected corresponding whole EPS bearer context deexcitation by described UE side;
Described UE side is initiated PDN and is connected disconnection process, and after first timer the 5th time-out corresponding with this flow process, described PDN is directly connected corresponding whole EPS bearer context deexcitation by described UE side;
Bearing resource modification process is initiated in described UE side, after second timer the 5th time-out corresponding with this flow process, when the object initiating described bearing resource modification process is the resource of this carrying correspondence of request release, described UE side is directly by whole EPS bearer context deexcitation of this carrying correspondence.
5. system according to claim 4, is characterized in that, comprising:
Described UE, also for constructing TAU request message and being sent to described network side, wherein, described TAU request message carries EPS bearer context statuses cell;
Described system also comprises: the network element of described network side, and for being still in the EPS bearer context of state of activation according to the deexcitation of described EPS bearer context statuses cell, wherein, this EPS bearer context is in the deexcitation of described UE side.
6. system according to claim 5, is characterized in that, the network element of described network side comprises:
Evolution base station, for described TAU request message is sent to Mobility Management Entity MME, connects the Data Radio Bearer resource specified by reprovision instruction release by radio resource control RRC;
Described MME, for resolving described TAU request message, and releases order according to the RAB E-RAB that described EPS bearer context statuses cell sends evolution to enode, and sends deleting bearing instruction to gateway;
Described gateway, for described deleting bearing instruction is forwarded to packet data network gateway, resource corresponding to described deleting bearing instruction is discharged with notification strategy and charging rule functions PCRF entity, receive the deleting bearing response coming from described MME, and discharge resource corresponding to described deleting bearing instruction;
Described packet data network gateway, for deleting bearing request being sent to described MME via described gateway, to notify that described evolution base station discharges Data Radio Bearer corresponding to described deleting bearing instruction and the bearer context that described in deexcitation, deleting bearing instruction is corresponding.
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| US10477615B2 (en) | 2015-01-16 | 2019-11-12 | Mediatek Inc. | Methods for handling a PDN disconnection request and communications apparatus utilizing the same |
| WO2018000127A1 (en) * | 2016-06-27 | 2018-01-04 | Qualcomm Incorporated | Techniques and apparatuses for tracking area synchronization |
| US20180132129A1 (en) * | 2016-11-09 | 2018-05-10 | Mediatek Singapore Pte. Ltd. | Apparatuses and methods for packet filter management |
| CN108282770B (en) * | 2017-01-06 | 2019-09-17 | 电信科学技术研究院 | A kind of method and device that Idle state tracing Area updates |
| CN109996324B (en) * | 2017-12-29 | 2022-03-01 | 展讯通信（上海）有限公司 | EPS bearing state synchronization method, device and network side equipment |
| CN111586774B (en) | 2019-02-19 | 2021-06-29 | 华为技术有限公司 | Communication method and communication device |
| US11134371B2 (en) | 2019-02-19 | 2021-09-28 | Huawei Technologies Co., Ltd. | Communication method and communications apparatus |
| CN115517005A (en) | 2020-03-26 | 2022-12-23 | Oppo广东移动通信有限公司 | System and method for optimizing PDN synchronization between user equipment and network |
| CN111526321B (en) * | 2020-04-16 | 2021-04-23 | Oppo广东移动通信有限公司 | Voice communication method, voice communication device, storage medium and electronic equipment |
| CN115052326A (en) * | 2022-06-22 | 2022-09-13 | 展讯半导体(成都)有限公司 | Communication method and related device |
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