CN102281519A - Bearer modifying method and system - Google Patents
Bearer modifying method and system Download PDFInfo
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- CN102281519A CN102281519A CN2010102066683A CN201010206668A CN102281519A CN 102281519 A CN102281519 A CN 102281519A CN 2010102066683 A CN2010102066683 A CN 2010102066683A CN 201010206668 A CN201010206668 A CN 201010206668A CN 102281519 A CN102281519 A CN 102281519A
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Abstract
The present invention discloses a bearer modification method and a bearer modification system. A servicing gateway receives a bearer modification command from a mobile management entity, and judges the states of a UE in a first access network and a second access network, if the UE are idle in the two access networks, bearer modification is carried out according to a current method; if the UE is idle in one access network and is connected in another access network, the mobile management entity carries out bearer modification on the access network in which the UE is connected, according to the QoS parameters sent by a PDN gateway; and for the access network in which the UE is idle, the servicing gateway informs the mobile management entity of the failure of bearer modification. According to the invention, the current states of the UE are divided by the servicing gateway, and then different bearer modification modes are adopted, thus avoiding unnecessary signaling transmission, and thereby reducing core network signaling.
Description
Technical field
The present invention relates to evolution grouping domain system (EPS, Evolved Packet System) technology, refer to a kind of bearing modification method and system especially.
Background technology
In order to keep the competitiveness of 3-G (Generation Three mobile communication system) in the communications field, third generation partner program (3GPP, 3rd Generation Partnership Project) the standard operation group just is being devoted to the research of evolution grouping domain system (EPS, Evolved Packet System).
Fig. 1 is the composition configuration diagram of existing EPS, as shown in Figure 1, EPS mainly comprises the universal terrestrial access network (E-UTRAN of evolution, Evolved Universal Terrestrial Radio AccessNetwork) and the packet-based core networks of evolution (EPC, Evolved Packet Core) two parts.Wherein, EPC can support the access of user from GSM EDGE wireless access network (GERAN, GSM EDGE radio accessnetwork) and universal land radio access web (UTRAN, Universal Terrestrial Radio AccessNetwork).
In EPC, include home subscriber data server (HSS, Home Subscriber Server), mobility management unit (MME, Mobility Management Entity), gateway (S-GW, Serving Gateway), grouped data network gateway (P-GW, PDN Gateway), Serving GPRS Support Node (SGSN, Serving GPRS Support Node) and the strategy and charging regulation function entity (PCRF, Policy and Charging Enforcement Function), wherein
HSS is the permanent storage place of user contracting data, is positioned at the home network that the user contracts;
MME is the storage place of user contracting data in current network, is used for being responsible for Non-Access Stratum (NAS layer, the Non-Access Stratum) signaling management of terminal to network, tracking and paging management function and the bearer management under user's idle pulley;
S-GW is the gateway that core net arrives wireless system, is used for being responsible for terminal to the user plane bearer of core net, the metadata cache under the terminal idle pulley, function, legal eavesdropping and grouped data route and the forwarding capability that network side is initiated service request;
P-GW is the gateway of EPS and EPS external network, is used for being responsible for the functions such as IP address assignment, billing function, grouping packet filtering, application of policies of terminal;
SGSN is the business support point that GERAN and UTRAN user insert the EPC network, and is similar with MME on the function, is used for being responsible for user's functions such as position renewal, paging management and bearer management;
PCRF is used for being responsible for providing policy control and charging regulation to PCEF.
In EPS,, introduced the function that idle pulley reduces signaling (ISR, Idle mode Signaling Reduction) in order to reduce the space interface signaling between UE and the core net.After the ISR function is activated, have the UE of UTRAN/GERAN and E-UTRAN access function simultaneously, can be registered to MME and SGSN simultaneously.Like this, when UE was mobile under two kinds of different Access Networks, UE can not initiate the routing region updating (RAU of (inter RAT, Radio Access Technology) between wireless access network, Routing AreaUpdate) or tracking area update (TAU, Tracking Area Update).Utilize the ISR function, reduced signaling unnecessary between UE and core net.
Fig. 2 is the schematic flow sheet that existing UE activates the ISR function, as shown in Figure 2, supposes that UE begins specifically to may further comprise the steps by E-TURAN access network (if earlier similar from UTRAN/GERAN access network situation, repeating no more) here:
Step 201:UE registers to MME by E-UTRAN, if UE has the unique interim UE identifier (GUTI in the effective whole world, Globally Unique Temporary Identity) or grouping temporary mobile subscriber identity (P-TMSI, Packet-Temporary Mobile Subscriber Identity), then in adhering to request, carry P-TSMI or GUTI.
Step 202:MME passes through the inspection of UE, heavy initiates location update request message to HSS, and self address information is reported HSS, finishes the registration in HSS.
Step 203:HSS upgrades response message to the MME home position, wherein carries the CAMEL-Subscription-Information of UE.
Step 204:MME initiates to be used to set up the establishment conversation request message of default bearing to PGW by SGW.
After step 205:PGW sets up the default bearing success, send establishment conversational response message to MME by SGW.
Step 206:MME is that UE distributes new GUTI and tracking area identification list (TAI list), and is carried to adhere to and returns to UE in the response message, also carries default bearing and activate request message in adhering to response message.
Step 207:UE receives the GUTI and the TAI list of distribution, and after finishing default bearing and setting up, and sends to adhere to MME and finishes message.
Step 208:UE moves in the route district (RA) of UTRAN/GERAN, and UE initiates the Routing Area Update request message, and the GUTI that obtains is mapped as P-TMSI, and is included in and carries the GUTI sign in the request message in the request.
Step 209:SGSN obtains the contextual information of UE to MME.
After step 210:MME finishes various verifications to UE, return the contextual information of this UE to SGSN.If this MME supports the ISR function, also carry the ISR ability information in this context response of returning, be used to indicate MME and support the ISR function.
Step 211:SGSN checks whether to need to reselect S-GW, if do not need and SGSN also supports the ISR function, so, SGSN thinks that the ISR function can activate.Add ISR and activate indication in context is replied, notice MME can continue to safeguard the context of this UE.
Step 212:SGSN sends the bearer update request to S-GW, carries ISR and activate indication in the bearer update request, is used to notify S-GW, and the ISR function is activated.
Step 213:S-GW is provided with ISR and activates sign in this locality, and sends the bearer update response to SGSN.
Step 214:SGSN carries address or the coded message of self in the position updating request that sends to HSS.
Step 215:HSS judges the SGSN that is of current access, judges and carries out two registrations, does not promptly need to send the canceling position request to the MME of registration before.HSS upgrades response message to the position that SGSN returns the CAMEL-Subscription-Information that carries UE.
Step 216:SGSN sends Routing Area Update to UE and accepts message, accept to carry in the message ISR at Routing Area Update and activate indication, and SGSN is the P-TMSI that UE distributes.
Step 217:UE returns Routing Area Update to SGSN and finishes message.
From flow process shown in Figure 2 as can be seen, UE for the ISR activation, Mobility Management Entity (MME or SGSN) need all keep effective contextual information at two networks, thereby guarantees that follow-up signaling plane information such as paging to UE can be sent to MME and SGSN respectively from S-GW; Simultaneously, SGW also needs to keep simultaneously the relevant information of MME and SGSN, thereby guarantees that follow-up signaling and downlink data notification message can notify MME and two network elements of SGSN simultaneously.UE is under the state that activates ISR, and registration is effective down though can remain on two RAT simultaneously, at a time can only keep state of activation under a RAT.
In the prior art, if user's subscription data changes, may trigger service quality (QoS) modification process of carrying, not activate ISR this moment, promptly UE is only effective at MME or SGSN registration.Specifically as shown in Figure 3, Fig. 3 is the schematic flow sheet of existing bearing modification, is that example is described with MME among Fig. 3:
Step 301:HSS initiates the subscription data modification process, by inserting user contracting data message, issues the subscription data of the UE after the renewal.
Step 302:MME returns to HSS and inserts the subscription data response message.
Relevant subscription data such as the QoS of carrying that step 303:MME judges current activation changes.
Step 304～step 305:MME initiates the bearing modification order by SGW to PGW, carries the qos parameter of contracting after changing in the bearing modification order.
Step 306～step 307:PGW is according to the qos parameter after the signatory variation of receiving, judging whether to carry out QoS revises, revise if desired, then PGW sends to MME by SGW and upgrades bearing request message, carries amended qos parameter in upgrading bearing request message.In this step, judge whether need to revise and how to revise the technology as well known to those skilled in the art that belongs to, and its specific implementation is irrelevant with the present invention, here detailed description no longer.
Step 308:MME finds that UE is in Idle state, then sends beep-page message to eNB, eNB paging UE.
Step 309:UE initiates business request information by eNB to MME.
Step 310:MME sends initial context to eNB and sets up request, sets up the contextual information that carries UE in the request at initial context, comprises the relevant qos parameter of UE carrying.
Step 311:eNB is that UE sets up the radio open carrying.
Step 312:eNB returns the initial context response message to MME, carries tunnel end sign and the address information of eNB in the initial context response message.
Step 313～step 314:MME sends to SGW with tunnel end sign and the address information of eNB.
Step 315:MME is notified to UE with the QoS of the carrying of PGW modification by revising bearing request message.
Step 316:UE upgrades QoS information, and returns the modification bearing response message to MME.
Step 317～step 318:MME returns the renewal bearing response message by SGW to PGW.
Step 313～step 314 does not have sequencing with the execution of step 315～step 318.
If in the step 308, MME finds that UE is in connected state, and then step 308～step 314 can be omitted.
From flow process shown in Figure 3 as seen, if UE has activated the ISR function, so, when the subscription data of HSS changed, HSS can insert subscription data to MME and SGSN simultaneously.But because MME and SGSN and do not know state under another Access Network, in order to guarantee UE, the qos parameter after SGW and PGW can in time obtain to upgrade, MME and SGSN need to initiate the bearing modification process to SGW and PGW simultaneously.In existing bearing modification process,, can cause too much core network signalling because the state of UE is not added differentiation.
Summary of the invention
In view of this, main purpose of the present invention is to provide a kind of bearing modification method and system, can reduce unnecessary signaling transmission, thereby reduces core network signalling.
For achieving the above object, technical scheme of the present invention is achieved in that
A kind of bearing modification method comprises:
Gateway SGW receives the modification carrying order from mobile management entity, judge the state of user equipment (UE) in first Access Network and second Access Network, when UE is in Idle state in an Access Network therein, in another Access Network, be in connected state, be in the Access Network of connected state for UE, mobile management entity carries out bearing modification according to the service quality QoS parameter that packet data gateway PGW issues; Be in the Access Network of Idle state for UE, the failure of SGW notice mobile management entity bearing modification; Described modification carrying order comprises the signatory qos parameter after the variation;
Described UE has activated idle pulley and has reduced signaling ISR function in first Access Network and second Access Network.
The qos parameter that described mobile management entity issues according to PGW carries out bearing modification and comprises:
In the bearing modification process, if described UE is in the service quality QoS parameter that the PGW from SGW that the mobile management entity judges in the Access Network that connected state or UE enter connected state goes out to receive issues, consistent with signatory qos parameter, notify described UE to continue to keep the ISR function.
If described UE is in the qos parameter that the PGW from SGW that the mobile management entity judges in the Access Network of connected state goes out to receive issues, inconsistent with signatory qos parameter, this method also comprises: notify described UE deactivation ISR function.
The failure of described SGW notice mobile management entity bearing modification comprises:
Described SGW notifies the mobile management entity in the Access Network that is in Idle state, the reason of bearing modification failure is that described UE is in connected state in another Access Network, simultaneously, described UE is in mobile management entity in the Access Network of Idle state and preserves qos parameter in the subscription data that the HSS that receives issues, and mark UE does not finish the bearing modification process under this Access Network.
Described SGW is before sending notice, and this method also comprises:
Described SGW judges whether revise the qos parameter that carries in the qos parameter that carries in the carrying order and the more new bearer request that PGW issues consistent, if inconsistent, then continues the step of the described bearing modification failed message of execution transmission.
The failure of described SGW notice mobile management entity bearing modification comprises:
The qos parameter that described SGW issues PGW sends to described UE and is in mobile management entity in the Access Network of Idle state, and the reason of notice bearing modification failure is that described UE is in connected state in another Access Network, simultaneously, described UE is in mobile management entity in the Access Network of Idle state and preserves the qos parameter that the PGW that receives issues, and need not mark UE do not finish the bearing modification process under this Access Network.
The failure of described SGW notice mobile management entity bearing modification comprises:
Described SGW judges whether the qos parameter that carries in the qos parameter that carries in the described bearing modification order and the more new bearer request that PGW issues is consistent, if it is consistent, the reason of described SGW notice bearing modification failure is that UE is in connected state under another Access Network and QoS revises successful information, described UE is in mobile management entity in the Access Network of Idle state and preserves qos parameter in the subscription data that the HSS that receives issues, and need not mark UE do not finish the bearing modification process under this Access Network.
A kind of bearing modification system comprises gateway SGW, mobile management entity and UE at least, wherein,
SGW, be used to receive modification carrying order from mobile management entity, judge the state of UE in first Access Network and second Access Network, be in Idle state in an Access Network therein at UE, when in another Access Network, being in connected state, be in the Access Network of connected state for UE, the mobile management entity in this Access Network carries out bearing modification according to the qos parameter that issues of PGW; Be in the Access Network of Idle state for UE, notify the failure of the mobile management entity bearing modification in this Access Network; Described modification carrying order comprises the signatory qos parameter after the variation;
Mobile management entity is used to receive the request from SGW, and carries out bearing modification or return the bearing modification failure according to request;
Described UE has activated idle pulley and has reduced signaling ISR function in first Access Network and second Access Network.
Mobile management entity in the described Access Network carries out bearing modification according to the qos parameter that issues of PGW and specifically comprises:
In the bearing modification process, if described UE is in the service quality QoS parameter that the PGW from gateway that the mobile management entity judges in the Access Network that connected state or UE enter connected state goes out to receive issues, consistent with signatory qos parameter, notify described UE to continue to keep the ISR function.
If described UE is in the qos parameter that the PGW from SGW that the mobile management entity judges in the Access Network of connected state goes out to receive issues, inconsistent with signatory qos parameter, described UE is in the mobile management entity in the Access Network of connected state, also is used to notify described UE deactivation ISR function.
The failure of described SGW notice mobile management entity bearing modification specifically comprises:
Described SGW notifies the mobile management entity in the Access Network that is in Idle state, the reason of bearing modification failure is that described UE is in connected state in another Access Network, simultaneously, described UE is in mobile management entity in the Access Network of Idle state and preserves qos parameter in the subscription data that the HSS that receives issues, and mark UE does not finish the bearing modification process under this Access Network.
Described SGW also was used for before sending notice, judged whether the qos parameter that carries in the qos parameter that carries in the bearing modification order and the more new bearer request that PGW issues is consistent, if inconsistent, the described bearing modification failed message of continuation transmission.
The failure of described SGW notice mobile management entity bearing modification specifically comprises:
The qos parameter that described SGW issues PGW sends to described UE and is in mobile management entity in the Access Network of Idle state, and the reason of notice bearing modification failure is that described UE is in connected state in another Access Network, simultaneously, described UE is in mobile management entity in the Access Network of Idle state and preserves the qos parameter that the PGW that receives issues, and need not mark UE do not finish the bearing modification process under this Access Network.
Described SGW, be used for also judging whether the qos parameter that carries in the qos parameter that described bearing modification order carries and the more new bearer request that PGW issues is consistent, if it is consistent, the reason of described SGW notice bearing modification failure is that UE is in connected state under another Access Network and QoS revises successfully, described UE is in the qos parameter in the subscription data that HSS that mobile management entity in the Access Network of Idle state keeps receiving issues, and need not mark UE do not finish the bearing modification process under this Access Network.
Described first Access Network is universal land radio access web/GSM EDGE wireless access network UTRAN/GERAN, or the universal terrestrial access network E-UTRAN of evolution, mobile management entity wherein is Serving GPRS Support Node SGSN or mobility management unit MME; Described second Access Network is E-UTRAN, or UTRAN/GERAN, and mobile management entity wherein is MME or SGSN.
The technical scheme that provides from the invention described above as can be seen, gateway receives the modification carrying order from mobile management entity, judge the state of UE in first Access Network and second Access Network,, carry out bearing modification according to existing method if UE all is in Idle state in two Access Networks; If UE is in Idle state in an Access Network therein, in another Access Network, be in connected state, be in the Access Network of connected state for UE, mobile management entity carries out bearing modification according to the gateway request; Be in the Access Network of Idle state for UE, the failure of gateway notice mobile management entity bearing modification.The present invention is by the differentiation of SGW to the UE current state, and then adopts different bearing modification modes, reduced unnecessary signaling transmission, thereby reduces core network signalling.
Description of drawings
Fig. 1 is the composition configuration diagram of existing EPS;
Fig. 2 activates the schematic flow sheet of ISR function for existing UE;
Fig. 3 is the schematic flow sheet of existing bearing modification;
Fig. 4 is the flow chart of bearing modification method of the present invention;
Fig. 5 is the composition structural representation of bearing modification of the present invention system;
Fig. 6 is the flow chart of first embodiment of bearing modification method of the present invention;
Fig. 7 is the flow chart of second embodiment of bearing modification method of the present invention.
Embodiment
Fig. 4 is the flow chart of bearing modification method of the present invention, as shown in Figure 4, may further comprise the steps:
Step 400: gateway receives the modification carrying order from mobile management entity.
When user's subscription data changed, HSS initiated the subscription data modification process, by inserting subscriber data message, the subscription data of the UE after mobile management entity issues renewal; The qos parameter that mobile management entity judges goes out in the relevant subscription data of the carrying of current activation changes, and can send to gateway and revise the carrying order, to trigger the bearing modification process.The specific implementation of this step belongs to technology as well known to those skilled in the art, repeats no more here.
Mobile management entity can be the MME in the LTE connecting system, or the SGSN in the GERAN/UTRAN connecting system.
Step 401: gateway is judged the state of UE in first Access Network and second Access Network, if UE all is in Idle state in two Access Networks, enters step 402; If UE is in Idle state in an Access Network therein, in another Access Network, be in connected state, enter step 403.
Among the present invention, UE has activated the ISR function in first Access Network and second Access Network.
Step 402: carry out bearing modification according to existing method.Process ends.
For the UE that activates the ISR function, and the state of UE in first Access Network and second Access Network carries out bearing modification according to existing method shown in Figure 3 and gets final product when being Idle state.
Step 403: be in the Access Network of connected state for UE, mobile management entity carries out bearing modification according to the QoS parameter qos parameter that PGW issues; Be in the Access Network of Idle state for UE, the failure of gateway notice mobile management entity bearing modification.
In this step, be in the Access Network of connected state for UE, the QoS parameter qos parameter that mobile management entity root PGW issues carries out the method for bearing modification, can adopt existing method shown in Figure 3 to carry out bearing modification, also can be further in the bearing modification process, whether described UE is in the qos parameter that the PGW from gateway that the mobile management entity judges in the Access Network that connected state or UE enter connected state receives issues consistent with signatory qos parameter, and whether continue to keep the ISR function according to judged result notice UE: if consistent, notice UE continues to keep the ISR function; If inconsistent, notice UE deactivation ISR function.
Be in the Access Network of Idle state for UE, the method of gateway notice mobile management entity bearing modification failure, can be that gateway is notified the mobile management entity in the Access Network that is in Idle state, the reason of bearing modification failure is that UE is in connected state in another Access Network, qos parameter in the subscription data that the HSS that mobile management entity preservation simultaneously receives issues, and mark UE does not finish the bearing modification process under this Access Network;
At this moment, also may further include: gateway judges whether the qos parameter that carries in the qos parameter that carries in the bearing modification order and the more new bearer request that PGW issues is consistent, if it is consistent, the reason of gateway notice bearing modification failure is that UE is in connected state under another Access Network and QoS revises successful information, if inconsistent, then gateway is notified to mobile management entity with UE is in connected state under another Access Network information; Mobile management entity is then carried out subsequent operation according to indication information: notice UE is in connected state under another RAT and QoS revises successfully if be designated as, so, the QoS that the mobile management entity maintenance was revised, under another RAT, be in connected state if be designated as UE, so, mobile management entity is local preserves the QoS that HSS revised, and is labeled as UE does not finish the bearing modification process under this Access Network.
Be in the Access Network of Idle state for UE, the method of gateway notice mobile management entity bearing modification failure, also can be that qos parameter that gateway issues PGW sends to UE and is in mobile management entity in the Access Network of Idle state, and the reason of notice bearing modification failure is that UE is in connected state in another Access Network, simultaneously, UE is in mobile management entity in the Access Network of Idle state and preserves the qos parameter that the PGW that receives issues, and need not mark UE do not finish the bearing modification process under this Access Network.
Be in the Access Network of Idle state for UE, the method of gateway notice mobile management entity bearing modification failure, can also be: described gateway judges whether the qos parameter that carries in the qos parameter that carries in the bearing modification order and the more new bearer request that PGW issues is consistent, if it is consistent, the reason of gateway notice bearing modification failure is that UE is in connected state under another Access Network and QoS revises successful information, UE is in mobile management entity in the Access Network of Idle state and preserves qos parameter in the subscription data that the HSS that receives issues, and need not mark UE do not finish the bearing modification process under this Access Network;
In step 402 in the inventive method～step 404, gateway is when receiving modification carrying order, the state of UE in different Access Networks distinguished, for activating the ISR function, and be in connected state in an Access Network therein, and in another Access Network, be in the UE of Idle state, can take different bearing modification methods according to the difference of UE state.The present invention is by the differentiation of SGW to the UE current state, and then adopts different bearing modification modes, reduced unnecessary signaling transmission, thereby reduces core network signalling.
At the inventive method, a kind of system of revising carrying also is provided, Fig. 5 as shown in Figure 5, comprises gateway, mobile management entity and UE at least for the composition structural representation of bearing modification of the present invention system, wherein,
Gateway, be used to receive modification carrying order from mobile management entity, judge the state of UE in first Access Network and second Access Network, when UE all is in Idle state in two Access Networks, notify two mobile management entities in the Access Network to carry out bearing modification according to existing method; Be in Idle state in an Access Network therein at UE, when being in connected state in another Access Network, be in the Access Network of connected state for UE, the mobile management entity in this Access Network carries out bearing modification according to the qos parameter that issues of PGW; Be in the Access Network of Idle state for UE, notify the failure of the mobile management entity bearing modification in this Access Network.
Mobile management entity is used to receive the request from gateway, and carries out bearing modification or return the bearing modification failure according to request.
Described UE has activated idle pulley and has reduced signaling ISR function in first Access Network and second Access Network.
Mobile management entity in the described Access Network carries out bearing modification according to the qos parameter that issues of PGW and specifically comprises: carry out bearing modification according to existing method; Perhaps,
In the bearing modification process, if described UE is in the service quality QoS parameter that the PGW from gateway that the mobile management entity judges in the Access Network of connected state goes out to receive issues, consistent with signatory qos parameter, notify described UE to continue to keep the ISR function.
If described UE is in the qos parameter that the PGW from gateway that the mobile management entity judges in the Access Network of connected state goes out to receive issues, inconsistent with signatory qos parameter, described UE is in the mobile management entity in the Access Network of connected state, also is used to notify described UE deactivation ISR function.
The failure of described gateway notice mobile management entity bearing modification specifically comprises:
The reason that described gateway notice is revised failure is that described UE is in connected state in another Access Network, simultaneously, described UE is in mobile management entity in the Access Network of Idle state and preserves qos parameter in the subscription data that the HSS that receives issues, and mark UE does not finish the bearing modification process under this Access Network.
The qos parameter that described gateway issues PGW sends to UE and is in mobile management entity in the Access Network of Idle state, and the reason of notice bearing modification failure is that UE is in connected state in another Access Network, simultaneously, UE is in mobile management entity in the Access Network of Idle state and preserves the qos parameter that the PGW that receives issues, and need not mark UE do not finish the bearing modification process under this Access Network.
Described gateway, be used for also judging whether the qos parameter that carries in the qos parameter that described bearing modification order carries and the more new bearer request that PGW issues is consistent, if it is consistent, the reason of described gateway notice bearing modification failure is that UE is in connected state under another Access Network and qos parameter is revised successfully, described UE is in mobile management entity in the Access Network of Idle state and preserves qos parameter in the subscription data that the HSS that receives issues, and need not mark UE do not finish the bearing modification process under this Access Network;
Among the present invention, first Access Network is UTRAN/GERAN or E-UTRAN, and mobile management entity wherein is SGSN or MME, and second Access Network is E-UTRAN or UTRAN/GERAN, and mobile management entity wherein is MME or SGSN.
Below in conjunction with embodiment, the inventive method is described in detail.
Fig. 6 is the flow chart of first embodiment of bearing modification method of the present invention, in first embodiment, suppose that UE has activated the ISR function, promptly keep login state simultaneously at SGSN (first mobile management entity) and MME (second mobile management entity), and suppose that UE is in connected state among a RAT therein, in the present embodiment, suppose that UE is in connected state in UTRAN/GERAN, be in Idle state in E-UTRAN.As shown in Figure 6,
In UTRAN/GERAN, comprising:
Step 601a:HSS initiates the subscription data modification process, by inserting subscriber data message, the subscription data of the UE after SGSN issues renewal.
Step 602a:SGSN returns to HSS and inserts subscription data modification response message.
Step 603a:SGSN is according to the subscription data that obtains, and the relevant qos parameter of carrying of judging current activation changes, and UE has activated ISR and has been in connected state.
Step 604a, SGSN carries out the related procedure that QoS revises in the prior art, and specific implementation repeats no more as shown in Figure 3 here.Like this, finished the bearing modification of UE in UTRAN/GERAN.
In E-UTRAN, comprising:
Step 601b:HSS initiates the subscription data modification process, by inserting subscriber data message, issues the subscription data of the UE after the renewal.
Step 602b:MME returns to HSS and inserts subscription data modification response message.
Step 603b, MME are according to the subscription data that obtains, and the relevant qos parameter of carrying of judging current activation changes, and UE has activated ISR and has been in Idle state.
Step 604b:MME sends the bearing modification order to SGW, carries amended qos parameter in the bearing modification order.
Step 605b:SGW has activated ISR according to UE, and another RAT, promptly is in connected state under the GERAN/UTRAN, judges to need not the bearing modification order is sent to PGW.
Step 606b:SGW returns the bearing modification failed message to MME, carries notice UE is in connected state under another RAT indication information in the bearing modification failed message.
This indication information can be indicated by reason (cause) value in the existing bearing modification failed message of expansion, and perhaps newly-increased element (IE) carries this Indication message in this bearing modification failed message, perhaps uses newly-increased message to carry this indication information.
After step 607b:MME is notified, preserve the amended qos parameter of HSS in this locality, and be labeled as UE and under EUTRAN, do not finish the bearing modification process.
Be in connected state for UE in E-UTRAN, be in the situation of Idle state in UTRAN/GERAN, specific implementation and flow process shown in Figure 6 are similar, and on Fig. 6 basis, those skilled in the art obtain easily, do not do here and give unnecessary details.
Fig. 7 in a second embodiment, supposes that UE has activated the ISR function for the flow chart of second embodiment of bearing modification method of the present invention, promptly keeps login state simultaneously at SGSN (first mobile management entity) and MME (second mobile management entity); And UE is in connected state among a RAT therein, in the present embodiment, supposes that UE is in connected state in UTRAN/GERAN, be in Idle state in E-UTRAN.As shown in Figure 7,
In UTRAN/GERAN, comprising:
Step 701a:HSS initiates the subscription data modification process, by inserting subscriber data message, the subscription data of the UE after SGSN issues renewal.
Step 702a:SGSN returns to HSS and inserts subscription data modification response message.
Step 703a:SGSN is according to the subscription data that obtains, and the relevant qos parameter of carrying of judging current activation changes, and UE has activated ISR and has been in connected state.
Step 704a:SGSN sends the bearing modification order to SGW, carries amended qos parameter in the bearing modification order.
Step 705a～step 706a:SGW has activated ISR according to UE, and judges UE at current RAT, promptly is in connected state under the GERAN/UTRAN, sends to PGW and revises the carrying order, carries amended qos parameter in revising the carrying order.
Step 707a～708a:PGW is according to the amended qos parameter of receiving, judging whether to carry out QoS revises, revise if desired, PGW sends to SGSN by SGW and upgrades bearing request message, and carries amended qos parameter in upgrading bearing request message.In this step, whether PGW needs conventional techniques means that qos parameter is made amendment and belonged to those skilled in the art, repeats no more here.
The qos parameter that step 709a:SGSN more more carries in the new bearer request, whether consistent with signatory qos parameter.
Step 710a: if the judged result among the step 709a is consistent, so, SGSN is notified to UE with the qos parameter of the carrying of PGW modification by revising bearing request message, also carries the ISR indication information that ISR activates in revising bearing request message; If the judged result among the step 709a is inconsistent, so, SGSN is notified to UE with the qos parameter of the carrying of PGW modification by revising bearing request message, in revising bearing request message, do not carry the ISR indication information that ISR activates, the UE of expression indication here deactivation ISR function.
Indication information in this step can be indicated by reason (cause) value in the existing bearing modification failed message of expansion, perhaps newly-increased element (IE) carries this Indication message in this bearing modification failed message, perhaps uses newly-increased message to carry this indication information.
This indication information can be that demonstration is carried or implicit expression is carried.Show to carry to refer in the message and must carry the indication that whether activates.Implicit expression is carried and is referred to, if carried a kind of situation of indication expression (deactivation ISR or reservation ISR activate) in the message, does not carry another situation of expression.
Step 711a:UE upgrades QoS information, and activates according to ISR indication information decision whether continuing the to keep ISR that revises in the bearing request message, and UE returns the modification bearing response message to SGSN.
Step 712a～step 713a:SGSN returns the renewal bearing response message by SGW to PGW.
So far, finished the bearing modification of UE in UTRAN/GERAN.
In E-UTRAN, comprising:
Step 701b:HSS initiates the subscription data modification process, by inserting subscriber data message, issues the subscription data of the UE after the renewal.
Step 702b:MME returns to HSS and inserts subscription data modification response message.
Step 703b:MME is according to the subscription data that obtains, and the relevant qos parameter of carrying of judging current activation changes, and UE has activated ISR and has been in Idle state.
Step 704b:MME sends the bearing modification order to SGW, carries amended qos parameter in the bearing modification order.
Step 705b:SGW has activated ISR according to UE, and another RAT, promptly is in connected state under the GERAN/UTRAN, determines need not the bearing modification order is sent to PGW.
The qos parameter that carries in the more new bearer request that PGW returns among the step 706b:SGW waiting step 707a, and judge its identical with the qos parameter that comprised among step 704a or the 704b whether consistent (identical), if it is consistent, then SGW returns the bearing modification failed message to MME, and notice UE is in connected state under another RAT and QoS revises successful indication information; If inconsistent, then SGW returns the bearing modification failed message to MME, and notice UE is in the indication information of connected state under another RAT.
Optionally, SGW can also comprise the amended qos parameter of PGW in the bearing modification failed message.
In this step, this indication information can be indicated by reason (cause) value in the existing bearing modification failed message of expansion, perhaps newly-increased element (IE) carries this Indication message in this bearing modification failed message, perhaps uses newly-increased message to carry this indication information.
Step 707b, after MME is notified, carry out subsequent operation according to the indication information in the bearing modification failed message: if indication information is in connected state for notice UE under another RAT and QoS revises successfully, then MME keeps the QoS revised, and need not mark UE do not finish the bearing modification process under this Access Network; If indication information is UE to be under another RAT and not to carry amended qos parameter in connected state and the notification message, then MME is local preserves the QoS that HSS revised, and is labeled as UE does not finish the bearing modification process under EUTRAN; If indication information is UE to be under another RAT and to carry amended qos parameter in connected state and the notification message, MME keeps the QoS that revised, and need not mark UE do not finish the bearing modification process under this Access Network.
Be in connected state for UE in E-UTRAN, be in the situation of Idle state in UTRAN/GERAN, specific implementation and flow process shown in Figure 7 are similar, and on Fig. 7 basis, those skilled in the art obtain easily, do not do here and give unnecessary details.
The above is preferred embodiment of the present invention only, is not to be used to limit protection scope of the present invention, all any modifications of being done within the spirit and principles in the present invention, is equal to and replaces and improvement etc., all should be included within protection scope of the present invention.
Claims (15)
1. a bearing modification method is characterized in that, comprising:
Gateway SGW receives the modification carrying order from mobile management entity, judge the state of user equipment (UE) in first Access Network and second Access Network, when UE is in Idle state in an Access Network therein, in another Access Network, be in connected state, be in the Access Network of connected state for UE, mobile management entity carries out bearing modification according to the service quality QoS parameter that packet data gateway PGW issues; Be in the Access Network of Idle state for UE, the failure of SGW notice mobile management entity bearing modification; Described modification carrying order comprises the signatory qos parameter after the variation;
Described UE has activated idle pulley and has reduced signaling ISR function in first Access Network and second Access Network.
2. bearing modification method according to claim 1 is characterized in that, the qos parameter that described mobile management entity issues according to PGW carries out bearing modification and comprises:
In the bearing modification process, if described UE is in the service quality QoS parameter that the PGW from SGW that the mobile management entity judges in the Access Network that connected state or UE enter connected state goes out to receive issues, consistent with signatory qos parameter, notify described UE to continue to keep the ISR function.
3. bearing modification method according to claim 2, it is characterized in that, if described UE is in the qos parameter that the PGW from SGW that the mobile management entity judges in the Access Network of connected state goes out to receive issues, inconsistent with signatory qos parameter, this method also comprises: notify described UE deactivation ISR function.
4. bearing modification method according to claim 1 is characterized in that, the failure of described SGW notice mobile management entity bearing modification comprises:
Described SGW notifies the mobile management entity in the Access Network that is in Idle state, the reason of bearing modification failure is that described UE is in connected state in another Access Network, simultaneously, described UE is in mobile management entity in the Access Network of Idle state and preserves qos parameter in the subscription data that the HSS that receives issues, and mark UE does not finish the bearing modification process under this Access Network.
5. bearing modification method according to claim 4 is characterized in that, described SGW is before sending notice, and this method also comprises:
Described SGW judges whether revise the qos parameter that carries in the qos parameter that carries in the carrying order and the more new bearer request that PGW issues consistent, if inconsistent, then continues the step of the described bearing modification failed message of execution transmission.
6. bearing modification method according to claim 1 is characterized in that, the failure of described SGW notice mobile management entity bearing modification comprises:
The qos parameter that described SGW issues PGW sends to described UE and is in mobile management entity in the Access Network of Idle state, and the reason of notice bearing modification failure is that described UE is in connected state in another Access Network, simultaneously, described UE is in mobile management entity in the Access Network of Idle state and preserves the qos parameter that the PGW that receives issues, and need not mark UE do not finish the bearing modification process under this Access Network.
7. bearing modification method according to claim 1 is characterized in that, the failure of described SGW notice mobile management entity bearing modification comprises:
Described SGW judges whether the qos parameter that carries in the qos parameter that carries in the described bearing modification order and the more new bearer request that PGW issues is consistent, if it is consistent, the reason of described SGW notice bearing modification failure is that UE is in connected state under another Access Network and QoS revises successful information, described UE is in mobile management entity in the Access Network of Idle state and preserves qos parameter in the subscription data that the HSS that receives issues, and need not mark UE do not finish the bearing modification process under this Access Network.
8. a bearing modification system is characterized in that, comprises gateway SGW, mobile management entity and UE at least, wherein,
SGW, be used to receive modification carrying order from mobile management entity, judge the state of UE in first Access Network and second Access Network, be in Idle state in an Access Network therein at UE, when in another Access Network, being in connected state, be in the Access Network of connected state for UE, the mobile management entity in this Access Network carries out bearing modification according to the qos parameter that issues of PGW; Be in the Access Network of Idle state for UE, notify the failure of the mobile management entity bearing modification in this Access Network; Described modification carrying order comprises the signatory qos parameter after the variation;
Mobile management entity is used to receive the request from SGW, and carries out bearing modification or return the bearing modification failure according to request;
Described UE has activated idle pulley and has reduced signaling ISR function in first Access Network and second Access Network.
9. bearing modification according to claim 8 system is characterized in that, the mobile management entity in the described Access Network carries out bearing modification according to the qos parameter that issues of PGW and specifically comprises:
In the bearing modification process, if described UE is in the service quality QoS parameter that the PGW from gateway that the mobile management entity judges in the Access Network that connected state or UE enter connected state goes out to receive issues, consistent with signatory qos parameter, notify described UE to continue to keep the ISR function.
10. bearing modification according to claim 9 system, it is characterized in that, if described UE is in the qos parameter that the PGW from SGW that the mobile management entity judges in the Access Network of connected state goes out to receive issues, inconsistent with signatory qos parameter, described UE is in the mobile management entity in the Access Network of connected state, also is used to notify described UE deactivation ISR function.
11. bearing modification according to claim 10 system is characterized in that, the failure of described SGW notice mobile management entity bearing modification specifically comprises:
Described SGW notifies the mobile management entity in the Access Network that is in Idle state, the reason of bearing modification failure is that described UE is in connected state in another Access Network, simultaneously, described UE is in mobile management entity in the Access Network of Idle state and preserves qos parameter in the subscription data that the HSS that receives issues, and mark UE does not finish the bearing modification process under this Access Network.
12. bearing modification according to claim 11 system is characterized in that,
Described SGW also was used for before sending notice, judged whether the qos parameter that carries in the qos parameter that carries in the bearing modification order and the more new bearer request that PGW issues is consistent, if inconsistent, the described bearing modification failed message of continuation transmission.
13. bearing modification according to claim 10 system is characterized in that, the failure of described SGW notice mobile management entity bearing modification specifically comprises:
The qos parameter that described SGW issues PGW sends to described UE and is in mobile management entity in the Access Network of Idle state, and the reason of notice bearing modification failure is that described UE is in connected state in another Access Network, simultaneously, described UE is in mobile management entity in the Access Network of Idle state and preserves the qos parameter that the PGW that receives issues, and need not mark UE do not finish the bearing modification process under this Access Network.
14. bearing modification according to claim 10 system is characterized in that,
Described SGW, be used for also judging whether the qos parameter that carries in the qos parameter that described bearing modification order carries and the more new bearer request that PGW issues is consistent, if it is consistent, the reason of described SGW notice bearing modification failure is that UE is in connected state under another Access Network and QoS revises successfully, described UE is in the qos parameter in the subscription data that HSS that mobile management entity in the Access Network of Idle state keeps receiving issues, and need not mark UE do not finish the bearing modification process under this Access Network.
15. bearing modification according to claim 10 system, it is characterized in that, described first Access Network is universal land radio access web/GSM EDGE wireless access network UTRAN/GERAN, or the universal terrestrial access network E-UTRAN of evolution, mobile management entity wherein is Serving GPRS Support Node SGSN or mobility management unit MME; Described second Access Network is E-UTRAN, or UTRAN/GERAN, and mobile management entity wherein is MME or SGSN.
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