CN101500292B - Packet domain service processing method, apparatus and system - Google Patents
Packet domain service processing method, apparatus and system Download PDFInfo
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- H04W36/0005—Control or signalling for completing the hand-off
- H04W36/0011—Control or signalling for completing the hand-off for data sessions of end-to-end connection
- H04W36/0022—Control or signalling for completing the hand-off for data sessions of end-to-end connection for transferring data sessions between adjacent core network technologies
- H04W36/00224—Control or signalling for completing the hand-off for data sessions of end-to-end connection for transferring data sessions between adjacent core network technologies between packet switched [PS] and circuit switched [CS] network technologies, e.g. circuit switched fallback [CSFB]
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Abstract
The invention discloses a packet domain business processing method, and equipment and a system thereof, which lead the user to obtain good business experience. When receiving paging from a circuit switched domain or during other call establishment, user equipment positioned in a packet domain is used for obtaining the information of business processing capacity of the packet domain in a target network, and determining whether the packet domain business is transferred to the target network. The invention also discloses the user equipment and the mobile communication system.
Description
Technical field
The present invention relates to the communications field, particularly the user handles the technology of packet switch domain service.
Background technology
2G/3G (second generation mobile communication technology/3G (Third Generation) Moblie technology, for example GSM and WCDMA network) network can be regarded a kind of comprehensive covering as to a certain extent through for many years deployment.Nowadays, development along with technology, SAE/LTE (System Architecture Evolution/LongTerm Evolution, System Architecture Evolution/Long Term Evolution), HSPA (High Speed Packet Access, high-speed packet inserts), HSPA+ (High Speed Packet Access Evolution, high-speed packet inserts evolution) and WiMAX (Worldwide Interoperability for Microwave Access, micro-wave access global inter communication) network-covered is to some areas, so in the present communication network, these networks and 2G/3G network are also deposited.For convenience of description, will only provide SAE/LTE, HSPA, the networks such as HSPA+, WiMAX in PS (Packet Switching, packet switching) territory to be referred to as PS territory network.
At different network carrying mechanism, the audio call of mobile communication can be divided into following several classes:
The first kind is the session service of CS (Circuit Service, circuit commutative field) territory carrying, as voice call;
Second class is the session service of PS territory carrying, be also referred to as VoIP (Voice over IP, the Voice over IP technology) class business, by IMS (IP Multimedia Subsystem, the IP multimedia service subsystem) provides QoS (Quality of Service, the service quality quality services) guarantees, as the voice call of IP carrying.
For PS territory network, audio call transmission in its PS territory carrying, IMS controls audio call by IP-based network.And in the 2G/3G network, audio call generally is to be carried on the CS territory.
In the initial deployment stage of PS territory networks such as SAE/LTE, HSPA, HSPA+, WiMAX is that hot zones covers, and the 2G/3G network can be regarded a kind of all standing as to a certain extent.Therefore, user's high-speed data service only is being provided or is not disposing as yet under the situation of IMS, some the CS service needed that comprises audio call relies on the CS territory of legacy network to carry, be that realize in the CS territory that some CS service needed of user is got back to the 2G/3G network, the process of Here it is CS Fallback.
In realizing process of the present invention, the inventor finds that there are the following problems at least in the prior art: if UE carries out CS Fallback in the prior art, after UE return back to CS territory network so, should how to handle in the business of PS territory network for UE before the rollback, effective solution not to be provided in the prior art, make that the UE rollback finishes after, when attempting to carry out PS territory network professional again, UE and network side may carry out unnecessary signaling process, have increased complexity, have reduced efficient.
Summary of the invention
The embodiment of the invention provides a kind of packet domain service processing method, makes the user can handle packet switch domain service.
The embodiment of the invention provides a kind of packet domain service processing method, comprises:
The subscriber equipment that is positioned at packet domain obtains the packet switch domain service disposal ability information of objective network when receiving CS paging or carrying out other call establishments, determine whether packet switch domain service is transferred to described objective network.
Subscriber equipment according to the embodiment of the invention comprises:
Calling unit is used for receiving circuit territory beep-page message or carries out other call establishments;
Judging unit is used to obtain the packet switch domain service disposal ability information of objective network, determines whether packet switch domain service is transferred to described objective network;
Processing unit is used for the indication according to judging unit, carries out the packet switch domain service processing procedure.
According to the mobile communication system of the embodiment of the invention, comprise the end side that can communicate with network side, described end side comprises:
Subscriber equipment when being used to receive CS paging or carrying out other call establishments, obtains the packet switch domain service disposal ability information of objective network, determines whether packet switch domain service is transferred to described objective network.
By relatively finding that a technical scheme in the technique scheme compared with prior art has following advantage or beneficial effect:
In the embodiment of the invention, make the subscriber equipment that is positioned at packet domain when receiving CS paging or carrying out other call establishments,, determine whether packet switch domain service is transferred to described objective network according to the packet switch domain service disposal ability of objective network.When objective network supports that PS is professional, packet switch domain service can be transferred to described objective network, thereby make UE behind CS Fallback, still can carry out original packet switch domain service, make the user can obtain good business experience.When objective network is not supported packet switch domain service, can hang up ongoing packet switch domain service, can continue original packet switch domain service fast thereby can make when UE is follow-up to be stationed packet field network again; Can also stop ongoing packet switch domain service, thereby still take the packet field network resource can avoid the user to quarter at legacy network the time and the wasting of resources that causes.
Description of drawings
Below with reference to accompanying drawings the present invention is made a more detailed description, in the accompanying drawing:
Fig. 1 is the network architecture schematic diagram under the applied a kind of scene of the embodiment of the invention;
Fig. 2 is the network architecture schematic diagram under the applied another kind of scene of the embodiment of the invention;
Fig. 3 is the network architecture schematic diagram under applied another scene of the embodiment of the invention;
Fig. 4 is the schematic diagram of the concrete Application Example 1 of method in the network architecture shown in Figure 1 that provide of the embodiment of the invention;
Fig. 5 is the schematic diagram of the concrete Application Example 2 of method in the network architecture shown in Figure 1 that provide of the embodiment of the invention;
Fig. 6 is the schematic diagram of the concrete Application Example 4 of method in the network architecture shown in Figure 2 that provide of the embodiment of the invention;
Fig. 7 is the schematic diagram of the concrete Application Example 5 of method in the network architecture shown in Figure 2 that provide of the embodiment of the invention;
Fig. 8 is the schematic diagram of the concrete Application Example 6 of method in the network architecture shown in Figure 2 that provide of the embodiment of the invention;
Fig. 9 is the schematic diagram of the concrete Application Example 7 of method in the network architecture shown in Figure 2 that provide of the embodiment of the invention;
Figure 10 is the mobile communication system schematic diagram that the embodiment of the invention provides.
Specific embodiment
For the purpose, technical scheme and the advantage that make the embodiment of the invention is clearer, the embodiment of the invention is described in further detail below in conjunction with accompanying drawing.
In the initial deployment stage of PS territory networks such as SAE/LTE, HSPA, HSPA+, WiMAX is that hot zones covers, and the 2G/3G network can be regarded a kind of all standing as to a certain extent.Select for use the SAE/LTE network to introduce this programme in embodiments of the present invention as the example of PS territory network, and be that the CS business that example is treated initiation describes with the audio call, of particular note, the scheme in the embodiment of the invention still goes for making the UE that quarters at PS territory network return back to the situation in legacy network CS territory because of CS is professional.
Whether need MSC upgraded to support MSC transmission to the CS beep-page message of MME, present network has framework A and two kinds of schemes of framework B if depending on.
As shown in Figure 1, framework A increases logic function body IWF (Interworking Function, network interconnection functive), under this framework, realize CS Fallback, be by IWF transtation mission circuit territory call signaling in the SAE/LTE network, make UE be in the Active state, and then UE is switched to the 2G/3G network, and set up circuit domain call by the HandOver process.Because CS territory call signaling is to set up at the LTE/SAE network, and be to carry out CS Fallback in the mode of switching, so the choice mechanism that the user calls out with tradition the right to choose of this CS business is slightly different, promptly the called subscriber receives the selection that can accept wish after the Setup message according to calling number.
As shown in Figures 2 and 3, framework B is for realizing CS Fallback by the Gs+ interface in Fig. 3, similar framework A, also can SAE/LTE network and 2G/3G network associate be got up by the mode of introducing intermediate module, this module can be back-to-back gateway, in order to realize the mobile management function between SAE/LTE network and the 2G/3G network, can be referred to as MM Proxy module.When UE is attached to MME, will unite simultaneously and be attached to MM Proxy module, so as can be when having CS to call out by MM Proxy by MME at SAE/LTE ICQ UE.Above-mentioned MM Proxy module is a logic module, it may be an independent entity, also the function of this module can be realized on other entity, such as realizing on the MME or on traditional MSC entity, realizing, can reach by the method for traditional MSC that upgrades for realizing on traditional MSC entity, this moment, corresponding framework was framework as shown in Figure 2.
In Fig. 2, by upgrading sends the CS beep-page message with support to MME to MSC.If do not support BSSAP+ (Base Station System Application Part Plus) and MAP (Mobile Application Part) agreement on the MME, protocols having conversion entity (Protocol Translator) between MME and MSC then, this entity are responsible for BSSAP+ or MAP that the Diameter that MME supports is converted on the MSC to be supported.
MM (Mobility Management in the packet domain (PS Domain), mobile management) state can be divided into three kinds, that is: PMM_DETACHED (mobile management of packet domain-attachment removal state), PMM_IDLE (mobile management-idle condition of packet domain), PMM_CONNECTED (mobile management-connection status of packet domain).And the SM in the packet domain (SessionManagement, session management) state is divided into two kinds: Active (activated state) and Inactive (unactivated state).
As previously mentioned, if UE carries out CS Fallback, after UE return back to CS territory network so, stop still hanging up for UE business at PS territory network before rollback, correspondingly, is the carrying of PS network to discharge or reservation? as discharging, then UE is stationed the PS network again and also will rebulids the PS carrying after finishing the CS calling, relatively loses time; Do not notify the PS network as reservation, UE has return back to the traditional C territory, and then when UE has the downlink data of PS, the PS network paging UE that can do as usual can cause paging failure like this.
Correspondingly, the embodiment of the invention provides a kind of packet domain service processing method, may further comprise the steps:
In step 101, the subscriber equipment that is positioned at packet domain is when receiving CS paging or carrying out other call establishments;
In step 102, obtain the packet switch domain service disposal ability information of objective network;
In step 103, determine whether packet switch domain service is transferred to described objective network.
Because after UE carried out CS Fallback, this moment, UE no longer quartered at the SAE/LTE network, so UE may be LTE_DETACHED (LTE attachment removal) state, LTE_IDLE (LTE free time) state at the state of SAE/LTE network.But UE carries out before the CS Fallback, may be in LTE_IDLE state, LTE_CONNECTED (LTE connection) state.Therefore, have following situation this moment:
1, CS Fallback when being in the LTE_CONNECTED state, UE takes place:
The ongoing business of UE is switched to the PS territory of target 2G/3G network, and delete MM and the SM context of UE in the PS core net, UE transfers the LTE_DETACHED state at the state of SAE/LTE network; Be in the carrying (containing default bearer) of Active for the SM state, can all discharge then and rebulid in the PS territory of 2G/3G network, (the so original carrying that distributes also can continue to use) taken in the PS territory that also it can be transferred to objective network.
Ongoing professional hang-up of UE made and can continue original business as UE after CS territory switchback PS network, do not delete MM and the SM context of UE in the PS core net, do not discharge corresponding carrying yet, but need do special identifier, to show that the present Fallback of this UE wouldn't allow UE to carry out new up/descending PS business at the PS network to the CS territory, UE transfers the LTE_IDLE state at the state of SAE/LTE network; For this state,, therefore also can outside existing three states, define a new state again in view of also can this user of paging under existing LTE_IDLE state.What need indicate is, how long can determine in the preservation of PS network for MM and SM context by carrier policy, such as realizing by setting special-purpose timer, after this timer time is overtime, will delete corresponding M M and SM context, discharge the SAE/LTE bearing resource, and be LTE_DETACHED the UE state-transition; Under this scene, may relate to mutual with PCC, notice RAT changes, QoS degradation etc.
Stop the ongoing business of UE, and deletion UE at the MM and the SM context of PS core net, discharge carrying accordingly, UE transfers the LTE_DETACHED state at the state of SAE/LTE network.
2, CS Fallback takes place in (this moment, this UE did not have data in transmission, was the core net carrying of Acitve but the SM state can be arranged) when UE is in the LTE_IDLE state:
If have the SM state to be in the carrying (containing default bearer) of Active this moment, can keep these carryings, do not delete MM and the SM context of UE at the PS network, UE still is the LTE_IDLE state at the state of PS core net, but need do special identifier, wouldn't allow UE to carry out new up/descending PS business to the CS territory at the PS network to show the present Fallback of this UE; For this state, whether define a new state and MM and the contextual retention time of SM is ditto described; Under this scene, may relate to mutual with PCC, notice RAT changes, QoS degradation etc.
Deletion UE is at the MM and the SM context of PS network, and UE transfers the LTE_DETACHED state at the state of PS core net.Be in the carrying (containing default bearer) of Active for the SM state, can take the methods that all discharge, also it can be transferred to the PS territory of objective network and take over.Above-mentioned UE changes flow processs such as can passing through Handover, RAU, LU or Detach in the PS network state to be realized.
What deserves to be mentioned is, in the state-transition process of above-mentioned UE in the PS territory, only this business is proceeded in the PS territory that just the ongoing PS business of UE can be transferred to objective network when objective network is supported the PS professional ability, can know by the following method whether objective network supports the ability of PS business:
A.UE adheres to or when carrying out tracing section updating, network side informs to UE whether legacy network supports the ability of PS business, if legacy network is supported the ability of PS business, network side also may be informed the power of legacy network support PS professional ability to UE, here, can be when being attached to PS territory network by PS territory network entity (such as: MME) inform this ability/power according to network configuration, also can be when being attached to the CS territory by the legacy network entity (such as: MSC) inform.When needs carried out CS Fallback, whether UE has PS professional ability/power according to legacy network was carried out above-mentioned processing to PS territory business.
B.eNB issues the ability whether adjacent 2G/3G sub-district supports the PS business by broadcast to UE, if legacy network is supported the ability of PS business, eNB also may broadcast the power that legacy network is supported the PS professional ability to UE.When needs carried out CS Fallback, whether UE has PS professional ability/power according to legacy network was carried out above-mentioned processing to PS territory business.
C. carry out CS when professional when needs, inform that by NAS message or Paging message the UE legacy network supports the ability of PS business by PS territory network core network entity, UE transfers to objective network with the PS business in view of the above.
For hanging up the situation of UE in the ongoing PS business of PS territory network, after finishing the CS business, UE returns again when being stationed PS territory network, can be by UE to PS territory server net equipment sending message, thus continue original PS business again.
What deserves to be mentioned is, above-mentioned UE both had been applicable to MT (MobileTerminated in the state-transition of PS core net, Mobile Terminated) process also is applicable to MO (Mobile Originated, travelling carriage is initial) process, different is, and that MT is is called, MO is caller, and the former has more the process of paging than the latter on flow process.No matter be MT or MO, all to return back to the information in 2G/3G CS territory so that the PS domain core net carries out respective handling between UE and the PS domain core net by Signalling exchange UE, consider from sequential, can be before Fallback mutual these information, mutual these information after also can Fallback, but mutual these information drawbacks are bigger after Fallback, such as: if in the process of carrying out CS Fallback, there is the PS downlink business to arrive, the PS core net does not know that UE is carrying out the process of CS Fallback, to initiate the paging of UE and attempt to set up the PS business, certainly will cause conflict like this, so be more prone to when CS Fallback is carried out in decision mutual these information between UE and PS core net, these information can be mutual in newly-increased message, such as: CS FallbackRequest/Response message, also can in existing message, increase corresponding cell and realize, such as: at Paging Response, message such as Handover Required or Setup increase CS Fallback indication information element.
Wherein, call out for MT, receive CS Paging message after, the transmission of Paging Response can have following mode:
A, after receiving Paging, UE sends to source MSC by the PS network at once;
B, directly do not reply Paging Response message, send, can in PS message, carry and be forwarded to MSC, can in the CS domain message, carry yet but Paging Response is carried in the subsequent message;
C, Fallback is to the CS territory as UE, and UE is in the CS of objective network domain response paging request message, and the call signaling that begins a CS territory then continues.
Return back to the CS territory at UE, need carry out handoff procedure, can trigger switching according to measurement report, also can adopt blind method of cutting to realize, that is: do not trigger and switch but directly initiate handoff procedure according to measurement report from UE by eNB from UE.
According to above-mentioned solution, introduce the specific embodiment of supporting this solution below.Following specific embodiment all is that example describes with MT, and the scene of MO can similarly obtain.Owing to have two kinds of schemes of framework A and framework B, the following corresponding embodiment based on these two kinds of frameworks that will introduce at present.
Introduce the concrete Application Example 1 of method in the network architecture shown in Figure 1 of the embodiment of the invention below.If objective network is supported the PS business, when UE receives the former because paging message of audio call of paging during at the LTE_CONNECTED state, UE will set up virtual audio call carrying in the LTE network, respectively ongoing PS business of SAE/LTE network and CS speech business are transferred to target 2G/3G grouping of network territory and circuit domain, promptly carry out PS switching and CS simultaneously and switch.After the PS finishing switching, UE can initiate the process of RAU, and MM and the SM context of UE at the SAE/LTE network deleted in RAU success back, thereby UE is changed to the LTE_DETACHED state at the state of SAE/LTE network.After CS switched, UE began speech business in the circuit domain of objective network.Specifically as shown in Figure 4.
To step 402, MSC sends CS Call Paging information, paging UE by IWF in step 401.
In step 403, UE finishes continuing of circuit domain call signaling by IWF and MSC, because objective network is supported the PS business, UE begins to carry out the switching (can be initiate to switch according to measurement report also can be blind cutting) of PS and CS this moment simultaneously.Wherein, Paging Response message can be carried in the switching message of this step and send.
In step 404, carry out after PS switches, UE initiates the RAU process.
In step 405, UE and network carry out optional security process.
In step 406 to step 414, SGSN indication HSS upgrades user related information, HSS can notify MME deletion user related information and initiate to discharge the bearing resource of UE at the LTE network by MME, is LTE_DETACHED thereby make the state-transition of user in the SAE/LTE network.
Wherein, step 409～410 are optional, and the embodiment of the invention is more prone to not discharge the resources of core network that core net is distributed for this UE, because (1) this moment, UE was in the LTE_CONNECTED state, was carrying out the PS business, consider from the successional angle of business, tend to not change Serving GW; (2) be because need initiating CS speech business just carrying out CS Fallback is not because move, it is little that UE shifts out the possibility of Serving GW scope, and then the possibility that changes of Serving GW is little.
What deserves to be explained is that MSC does not change in the said method flow process,, also need after step 412, to increase the process of LU (Location Update, the position is upgraded) if variation has taken place MSC.
In the present embodiment, make when objective network supports that PS is professional, target 2G/3G grouping of network territory and circuit domain are all transferred in the ongoing PS of SAE/LTE network CS speech business professional and that just continued, promptly carrying out PS switching and CS simultaneously switches, thereby make UE behind CS Fallback, still can carry out original PS business, make the user can obtain good business experience.
Introduce the concrete Application Example 2 of method in the network architecture shown in Figure 1 of the embodiment of the invention below.If objective network is not supported the PS business, when the UE that is in the LTE_CONNECTED state at the LTE network receives from the indication of CS paging service, (UE changes LTE_DETACHED in the SAE/LTE network state with the professional termination of original PS, and release is carried accordingly) or hang-up (UE changes LTE_IDLE in the SAE/LTE network state), under situation about hanging up, need to send the indication that UE has return back to CS to MME, MME receives and discharges that the SAE/LTE network is eated dishes without rice or wine and the S1 interface resource after this indication immediately, when if this section has the downlink data of UE in the period, MME can not carry out paging to UE.Specifically as shown in Figure 5.
After the UE that is in the LTE_CONNECTED state receives the CS paging, if CS Fallback is carried out in user's decision, next can set up the circuit domain call signaling by IWF, because objective network is not supported the PS business, according to the strategy of network, UE can notify the LTE network with professional hang-up of ongoing PS (UE is LTE_IDLE in the state-transition of SAE/LTE network) or termination (UE is LTE_DETACHED in the state-transition of SAE/LTE network).
If hang up, UE need carry out CS switch before or when switching beginning notice MME wouldn't discharge the LTE carrying of UE, and when UE has downlink data this UE of not paging.Can in following message, notify MME to begin to carry out this operation:
1) MME obtains the indication that keeps or discharge is carried out in user's LTE carrying by resolving Call Confirm message;
2) MME carries out the operation that carrying keeps or discharges to LTE after receiving HO REQUIRED message;
3) UE sent out a NAS message to MME and indicates MME to carry out the operation that carrying is kept or discharges before beginning switching;
What deserves to be explained is, MM and SM context are preserved at the SAE/LTE network and how long can be determined by carrier policy, such as realizing by setting special-purpose timer, after this timer time is overtime, will delete corresponding context, releasing bearing, and be LTE_DETACHED the UE state-transition.
Scene for the business termination, can adopt from the method for SAE/LTE network Detach and realize that UE is from the attachment removal of SAE/LTE network and the change of state, can directly initiate Detach Request to MME by UE this moment after CS Fallback is carried out in decision, also can delete corresponding context and releasing bearing by MSC by IWF notice MME after CS at Fallback.
In the present embodiment, make when objective network does not support that PS is professional, can hang up ongoing PS business, can continue original PS business fast thereby can make when UE is follow-up to be stationed the SAE/LTE network again; Can also stop ongoing PS business, thereby still take PS territory Internet resources can avoid the user to quarter at legacy network the time and the wasting of resources that causes.
Introduce the concrete Application Example 3 of method in the network architecture shown in Figure 1 of the embodiment of the invention below.In the present embodiment, UE receives when being in the LTE_IDLE state that Paging Cause is the CS beep-page message of audio call or initiatively initiates the CS audio call, because UE needs to change the LTE_CONNECTED state at the SAE/LTE network earlier, and then switch to the 2G/3G network, so it is similar with embodiment 2 UE to be return back to the method in CS territory, the carrying in the SAE/LTE network can discharge also and can keep (method is with embodiment 2) for UE.
In the present embodiment, make equally when objective network does not support that PS is professional, can hang up ongoing PS business, can continue original PS business fast thereby can make when UE is follow-up to be stationed the SAE/LTE network again; Can also stop ongoing PS business, thereby still take PS territory Internet resources can avoid the user to quarter at legacy network the time and the wasting of resources that causes.
Aforementioned several embodiment is based on the scheme of framework A, introduces the scheme of the embodiment of the invention based on framework B below.Since framework B exist as shown in Fig. 2 and Fig. 3 two kinds of schemes and, the identical of the two and difference part have been illustrated in the front, here be the example explanation embodiment of the invention only with framework shown in Fig. 2, but of particular note, in the embodiment of the invention in the adaptable scheme of framework shown in Fig. 2, its method flow is similar, equally also goes for framework shown in Fig. 3, repeats no more here.
Introduce the concrete Application Example 4 of method in the network architecture shown in Figure 2 of the embodiment of the invention below.
In the present embodiment, UE receives when being in the LTE_CONNECTED state that paging is former because the paging message of audio call, call out then and UE need be return back to the CS territory for setting up this CS, if ongoing PS business in the SAE/LTE network can also be transferred to the PS territory of 2G/3G network simultaneously, then can (can trigger the UE reporting measurement reports by PS Handover by eNB, eNB sends handoff request message to MME in view of the above, can also realize by blind method of cutting) and the process of the associating RAU/LU that triggers subsequently realize CS Fallback, that is: the ongoing business of SAE/LTE network is transferred to the PS territory of 2G/3G network by PS Handover, UE can initiate the process of associating RAU/LU subsequently, MM and the SM context of UE at the SAE/LTE network deleted in RAU/LU success back, thereby UE is changed to the LTE_DETACHED state at the state of SAE/LTE network.Specifically as shown in Figure 6.
To step 602, MSC is handed down to MME with beep-page message in step 601, again by the paging of MME triggering to UE.Simultaneously, what deserves to be mentioned is transmission for Paging Response, what present embodiment adopted is to send to source MSC by MME after UE receives Paging, can certainly after finishing CS Fallback, reply, that is: after above-mentioned flow process co-location renewal is finished, reply in the CS territory.
In step 603, the PS business of SAE/LTE network is transferred to the PS territory (can be initiate to switch also can be blind cutting) of 2G/3G network by PS Handover according to measurement report.
To step 619, after the PS switching was finished, UE initiated the position updating process of associating by step 604.
Wherein, delete MM and the SM context of UE by the Cancle Location message of step 607 at the SAE/LTE network, and further by step 608 and 609 discharge UE in the carrying of SAE/LTE network (if Serving-GW does not change, then only discharge and eat dishes without rice or wine and the S1 mouthpiece carries resource, and do not discharge the core net bearing resource), thus make UE will transfer the LTE_DETACHED state at the state of SAE/LTE network.
For step 609, present embodiment is more prone to not discharge the resources of core network that core net is distributed for this UE, and reason has two: (1) this moment, UE was in the LTE_CONNECTED state, was carrying out the PS business, consider from the successional angle of business, tend to not change Serving GW; (2) to carry out CS Fallback be because have the CS speech business not to be because move to UE, and it is little that UE shifts out the possibility of Serving GW scope, and then the possibility that changes of Serving GW is little.
Optionally, for step 614 and step 615,, then do not carry out this two step if the variation of MSC does not take place.
In the present embodiment, make when objective network supports that PS is professional, the ongoing PS business of SAE/LTE network is transferred to target 2G/3G grouping of network territory, thereby make UE behind CS Fallback, still can carry out original PS business, make the user can obtain good business experience.
Introduce the concrete Application Example 5 of method in the network architecture shown in Figure 2 of the embodiment of the invention below.
In the present embodiment, when UE receives the Paging message of the former because audio call of paging when being in the LTE_CONNECTED state, call out then and UE need be return back to the CS territory for setting up this CS, if the ongoing PS business of SAE/LTE network can't be switched to the 2G/3G network, then the carrying in the SAE/LTE network can be retained when being stationed the SAE/LTE network again (so that follow-up UE can continue original business fast) or discharge, and UE is return back to the CS territory by the process of LU.Specifically as shown in Figure 7.
By step 701 and step 702, when UE receives from the paging request in CS territory, before carrying out CS Fallback, UE return back to the CS territory and notifies MME that original LTE bearing resource is kept or release to the MME request by the CS Fallback Request message in the step 703.If keep, after MME receives this message, can discharge interface-free resources immediately, and according to carrier policy or configuration timer, if this user's downlink data is arranged in this timer scope, then MME will can this user of paging.Timer expiry, MME will discharge the user and change the LTE_DETACHED state at the bearing resource of SAE/LTE network and with UE.
After finishing by the LU process of step 704, being carried as to keep still of former SAE/LTE network discharges, and can realize in the following manner:
1) UE carried out the Detach of SAE/LTE network earlier, thereby will carry release before initiating LU;
2) UE can be in step 703 keeps or discharges the carrying of SAE/LTE network with the mutual CS Fallback Request/Response message indication MME of MME; If keep, then UE is changed to the LTE_IDLE state at the state of SAE/LTE network, do not delete the MM﹠amp of UE at the SAE/LTE network; The SM context, keeping the SAE/LTE network simultaneously is the core net bearing resource that UE distributes; If discharge, then UE is changed to the LTE_DETACHED state at the state of SAE/LTE network, and deletion UE is at the MM﹠amp of SAE/LTE network; The corresponding carrying of SM context and release, can indicate by increase Detach in above-mentioned CS Fallback message and realize this moment, also can finish aforesaid operations by the Detach flow process, and Detach Tpye is changed to SAE/LTE Detach.
In step 705: UE sends Paging Response message to MSC.
In step 706: carry out the CS voice call service.
In the present embodiment, make when objective network does not support that PS is professional, can hang up ongoing PS business, can continue original PS business fast thereby can make when UE is follow-up to be stationed the SAE/LTE network again; Can also stop ongoing PS business, thereby still take PS territory Internet resources can avoid the user to quarter at legacy network the time and the wasting of resources that causes.
Introduce the concrete Application Example 6 of method in the network architecture shown in Figure 2 of the embodiment of the invention below.
In the present embodiment, UE is in the LTE_IDLE state, and objective network do not support the PS business, then can realize CS Fallback by the process of LU, and UE keeps the LTE_IDLE state at the state of SAE/LTE, keeps the MM﹠amp of UE at the SAE/LTE network simultaneously; The SM context is so that can continue original business as UE after CS territory switchback SAE/LTE network, need to do special identifier in addition, wouldn't allow UE to carry out new up/descending PS business to the CS territory at the SAE/LTE network to show the present Fallback of this UE.Certainly, UE directly can also be fallen from SAE/LTE network Detach, implementation method can be that Fallback triggers the Detach process by UE or MME before, also can delete operations such as context/releasing bearing by MSC notice MME after CS at Fallback.Specifically as shown in Figure 8.
In step 801, after source MSC receives IAM message, send Paging Request message to MME, then by MME paging UE in the SAE/LTE network, Paging Response shown in this example replys after receiving Paging at once, also can adopt above-mentioned described mode to reply;
In step 802, UE and MME notify the information that the other side need carry out CS Fallback and the PS business is hung up or stopped mutually, and are further triggered the reservation or the release of PS carrying by MME.
In step 803, keep the renewal process then may trigger carrying as carrying, such as: the MBR/GBR value is reduced to 0 etc.
In step 804 to step 812, UE is return back to the CS territory by the LU process.
In the present embodiment, if, then do not delete SM﹠amp with the professional hang-up of original PS; The MM context, and UE still is changed to the LTE_IDLE state at the state of SAE/LTE, and do special identifier and wouldn't carry out the PS uplink/downlink sub-carriers.For SM﹠amp; How long the MM context keeps in core-network side, can realize by the mechanism that timer is set.
In the present embodiment, make equally when objective network does not support that PS is professional, can hang up ongoing PS business, can continue original PS business fast thereby can make when UE is follow-up to be stationed the SAE/LTE network again; Can also stop ongoing PS business, thereby still take PS territory Internet resources can avoid the user to quarter at legacy network the time and the wasting of resources that causes.
Introduce the concrete Application Example 7 of method in the network architecture shown in Figure 2 of the embodiment of the invention below.
In the present embodiment, UE receives the CS paging from network side when being in the LTE_IDLE state, and objective network is supported the PS business, that is: the business of SAE/LTE network can be transferred to objective network, the RAU/LU process that then can pass through associating realizes the state transition at SAE/LTE of business and the transfer of carrying and UE, simultaneously with the MM﹠amp of UE at the SAE/LTE network; The deletion of SM context.Specifically see shown in Figure 9.
In step 901, after source MSC receives IAM message, send Paging Request message to MME, then by MME paging UE in the SAE/LTE network, Paging Response shown in this example replys after receiving Paging at once, also can adopt above-mentioned described mode to reply;
In step 902, UE and MME notify the information that the other side need carry out CS Fallback and the PS business be transferred to objective network PS territory mutually;
Step 903 to 926 in, by the associating the RAU/LU process UE is return back to the CS territory.
Because objective network is supported the PS business, above-mentioned flow process is by the MM﹠amp of step 913a～913c deletion UE at SAE/LTE; The SM context, thus UE is changed to the LTE_DETACHED state at the state of SAE/LTE network, 913b is optional, reason is with embodiment 4.Variation has also taken place in MSC in the foregoing description, so after finishing RAU, also need to carry out the process of LU, step 918 is the context of deletion at source MSC in the flow process.Can also realize that UE changes at the associative operation and the state of SAE/LTE network by the Detach flow process.
In the present embodiment, make when objective network supports that PS is professional, the ongoing PS business of SAE/LTE network is transferred to target 2G/3G grouping of network territory, thereby make UE behind CS Fallback, still can carry out original PS business, make the user can obtain good business experience.
Introduce the mobile communcations system embodiment that the embodiment of the invention relates to below, be understandable that, this system in the embodiment of the invention can also comprise other numerous entities of realizing communication function, belong to normalized technology in the communications field for the technology that may disclose in other prior aries, repeat no more details in the present embodiment; But, only pointed out major part in this system here in order to introduce the implementation in the embodiment of the invention.See also Figure 10, this system comprises: the end side 1020 that comprises network side 1010 and can communicate with network side 1010, and wherein, end side 1020 can comprise:
Subscriber equipment 1021 when being used to receive CS paging or carrying out other call establishments, obtains the packet switch domain service disposal ability information of objective network, determines whether packet switch domain service is transferred to described objective network.
Particularly, subscriber equipment 1021 comprises:
Calling unit 10211 is used for receiving circuit territory beep-page message or carries out other call establishments;
Judging unit 10212 is used to obtain the packet switch domain service disposal ability information of objective network, determines whether packet switch domain service is transferred to described objective network;
Wherein, the Rule of judgment of judging unit is one of following or combination: objective network has the packet switch domain service disposal ability; Objective network does not have the packet switch domain service disposal ability; The subscriber equipment own service needs.
One of ordinary skill in the art will appreciate that all or part of step that realizes in the foregoing description method is to instruct relevant hardware to finish by program, described program can be stored in a kind of computer-readable recording medium, this program is when carrying out, comprise the steps: to be positioned at the subscriber equipment of packet domain when receiving CS paging or carrying out other call establishments, obtain the packet switch domain service disposal ability information of objective network, determine whether packet switch domain service is transferred to described objective network.Wherein predetermined condition is one of following or its combination in any: objective network has the packet switch domain service disposal ability; Objective network does not have the packet switch domain service disposal ability; The subscriber equipment own service needs.The above-mentioned storage medium of mentioning can be a read-only memory, disk or CD etc.
Though by with reference to some preferred embodiment of the present invention, the present invention is illustrated and describes, those of ordinary skill in the art should be understood that and can do various changes to it in the form and details, and without departing from the spirit and scope of the present invention.
Claims (5)
1. a packet domain service processing method is characterized in that, comprises following steps:
The subscriber equipment that is positioned at packet domain obtains the packet switch domain service disposal ability information of objective network when receiving CS paging or carrying out other call establishments, determine whether packet switch domain service is transferred to described objective network; Described subscriber equipment is in idle condition in described packet domain, then no matter whether described objective network has the packet switch domain service disposal ability:
Keep and be in the carrying that activates in the session management state, keep described subscriber equipment the MM Context of described packet domain and or the session management context, described subscriber equipment is put idle condition or puts other in the packet field network side and identify the state that described subscriber equipment has left described packet domain;
Perhaps, delete described subscriber equipment the MM Context of described packet domain and or the session management context, in the packet field network side described subscriber equipment is put the attachment removal state, discharge and be in the packet domain processing that the carrying that activates in the session management state maybe is transferred to this carrying described objective network.
2. packet domain service processing method according to claim 1, it is characterized in that, described subscriber equipment is in connection status in described packet domain, then work as described objective network and have the packet switch domain service disposal ability, described determining whether transferred to packet switch domain service after the described objective network, also comprises:
The packet switch domain service of described subscriber equipment is passed through the packet domain switched and transferred to described objective network.
3. packet domain service processing method according to claim 2 is characterized in that, if determine the packet switch domain service of described subscriber equipment is transferred to described objective network:
Delete described subscriber equipment the MM Context of described packet domain and or the session management context, releasing bearing is put the attachment removal state in the packet field network side with described subscriber equipment.
4. according to each described packet domain service processing method in the claim 1 to 3, it is characterized in that described subscriber equipment return back to this circuit domain, carry out the circuit domain call process:
Before described subscriber equipment return back to this circuit domain: described subscriber equipment notified the described subscriber equipment decision of described packet field network side to return back to the circuit domain of described objective network by signaling method, carries out the circuit domain call process.
5. according to each described packet domain service processing method in the claim 1 to 3, it is characterized in that, described subscriber equipment one of in the following manner or combination in any know the packet switch domain service disposal ability information of described objective network:
Described subscriber equipment adheres to or during tracing section updating, described subscriber equipment obtains the indication of network side;
The NodeB of the evolution of described packet field network issues the packet switch domain service disposal ability information of objective network by broadcast to described subscriber equipment, and described subscriber equipment receives this information;
Described packet field network side issues the packet switch domain service disposal ability information of objective network to described subscriber equipment by Non-Access Stratum signaling or beep-page message.
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| CN2008100660608A CN101500292B (en) | 2008-02-02 | 2008-02-02 | Packet domain service processing method, apparatus and system |
| PCT/CN2008/073779 WO2009097733A1 (en) | 2008-02-02 | 2008-12-26 | Ps domain service processing method, apparatus and system |
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| CN2008100660608A CN101500292B (en) | 2008-02-02 | 2008-02-02 | Packet domain service processing method, apparatus and system |
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| CN102480673B (en) * | 2010-11-29 | 2015-09-16 | 中兴通讯股份有限公司 | The implementation method that CS and PS is concurrent and device |
| CN102883384A (en) * | 2011-07-15 | 2013-01-16 | 华为技术有限公司 | Method for changing access cells, user equipment and base station |
| US20150003328A1 (en) * | 2011-12-16 | 2015-01-01 | Telefonaktiebolaget L M Ericsson (Publ) | Circuit switched fallback proxy |
| CN103269504B (en) * | 2013-05-16 | 2016-08-03 | 希姆通信息技术（上海）有限公司 | A kind of method and device of intelligence switch data network |
| CN104378794A (en) * | 2013-08-14 | 2015-02-25 | 中国移动通信集团广东有限公司 | Method and device for switching between different systems and access network device |
| CN105025532B (en) * | 2015-06-12 | 2018-10-23 | 大唐移动通信设备有限公司 | A kind of processing method and system that circuit domain retracts |
| CN107087289B (en) * | 2016-02-16 | 2020-07-31 | 大唐移动通信设备有限公司 | Circuit domain fallback processing method and mobile management entity equipment |
| US10375665B2 (en) * | 2017-02-06 | 2019-08-06 | Huawei Technologies Co., Ltd. | Method and apparatus for supporting access control and mobility management |
| WO2019178840A1 (en) * | 2018-03-23 | 2019-09-26 | Nokia Solutions And Networks Oy | Method and apparatus for data transmission |
| CN112235843A (en) * | 2020-11-02 | 2021-01-15 | 中国联合网络通信集团有限公司 | Data service processing method, mobile management entity and service gateway |
| CN114640958A (en) * | 2020-12-16 | 2022-06-17 | 维沃移动通信有限公司 | IMS process processing method and related equipment |
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| CN1882119A (en) * | 2005-09-26 | 2006-12-20 | 华为技术有限公司 | Device, system and method for realizing inter-switching of circuit domain and packet domain |
| CN1881958A (en) * | 2005-08-08 | 2006-12-20 | 华为技术有限公司 | Method and apparatus for user device switching from packet domain to circuit domain |
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| WO2006103547A1 (en) * | 2005-03-30 | 2006-10-05 | Nokia Corporation | Combined handover of the circuit-switched (cs) and packet-switched (ps) resources |
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| CN1881958A (en) * | 2005-08-08 | 2006-12-20 | 华为技术有限公司 | Method and apparatus for user device switching from packet domain to circuit domain |
| CN1882119A (en) * | 2005-09-26 | 2006-12-20 | 华为技术有限公司 | Device, system and method for realizing inter-switching of circuit domain and packet domain |
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