CN101179838A

CN101179838A - Network concealed separation method of subscriber terminal

Info

Publication number: CN101179838A
Application number: CNA2006101451140A
Authority: CN
Inventors: 王云贵
Original assignee: Huawei Technologies Co Ltd
Current assignee: Huawei Technologies Co Ltd
Priority date: 2006-11-10
Filing date: 2006-11-10
Publication date: 2008-05-14
Anticipated expiration: 2026-11-10
Also published as: CN101179838B; WO2008055449A1

Abstract

The invention relates to a user terminal network implicit isolation method, which includes: after the user terminal is registered to a long-term evolution network and a 2G/3G network, a relevant user terminal between the two networks is established. In a network, when the user terminal is entered a free situation, a network nod starts up a movable timer of the user terminal. After an overtime of the movable timer of the network nod occurs, the user terminal is changed to a quasi-implicit isolation situation, and if the user terminal in another network is also in the quasi-implicit situation, then the two networks have the implicit situation to the user terminal, and the mobility management situation of the user terminal in the network is changed to the implicit situation. Therefore, in the isolation method of the invention, two network nodes control independently the mobility of the user terminal to manage the context, and when a downstream data comes, the paging is just done in the current residence RAT network. The influence to the current system is reduced to a smaller degree, and the relevant context synchronized signaling between the two networks is reduced, thereby the network resource is saved.

Description

The network concealed separation method of user terminal

Technical field

The present invention relates to a kind of user terminal (User Equipment, network concealed separation method UE), the concealed separation method of especially a kind of user terminal in two connecting systems of evolvement network.

Background technology

At present at 3GPP (3rd Generation Partnership Project, third generation collaborative project) in, SAE (System Architecture Evolution, System Architecture Evolution), LTE (Long TermEvolution, Long Term Evolution) more and more studied, the purpose of LTE provides a kind of network cheaply that can reduce time delay, raising user data rate, improved power system capacity and covering.Only use PS territory business, bearer network all is the IP carrying.

On this basis, derive a lot of new network architectures and reached top requirement, be a kind of commonplace framework as shown in Figure 1, wherein LTE RAN is the wireless access network of evolvement network, node wherein has eNodeB, have CPS (Control Plane Server, chain of command server), logically with it as LTE-RAN Entity (Long Term Evolution radio access network entity); MME (MobilityManagement Entity, mobile management entity)/UPE (User Plane Entity, user entity) also is logic entity, the function of MME is to preserve MM (the Mobility Management of UE, mobile management) context, as user's sign, mobility status, TA (Tracking Area, tracking area) information etc., and the user authenticated; The function of UPE is the entity of the UE termination downlink data of idle (not busy time) state, triggers paging simultaneously, preserves the context of UE simultaneously, as the IP address of UE and routing iinformation etc.User Plane Anchor is the anchor point of user's face, and this user's face anchor point can be unified with UPE, is constant in user's Session Time.Whether MME/UPE or UPE/User Plane Anchor separate following method unrestricted.HSS (Home Subscriber Server, home subscriber server) is used for storing user subscription information.

Limitation signaling is an important problem between wherein different RAT (Radio Access Technology wireless access technology), its implication is when UE moves (as network and the evolvement network of 2G/3G) between different RAT, can be because UE be stationed and cause the ping-pong of frequent network registration process at different networks, causing eating dishes without rice or wine is a kind of great waste.As shown in Figure 2, RA (Routing Area, route district) 1 and RA2 are the route district (Routing Area) of existing 2G/3G, and the UE of existing 2G/3G will initiate RAU (Routing Area Update, Routing Area Update) process at RA of every replacing.Certainly UE also has periodic position updating process under the situation of not changing RA, and its effect is to make network understand UE at present also at network, prevent the UE deviated from network and network is not understood and constantly the situation of paging UE take place.

TA1, TA2, TA3, TA4 are the tracking areas (Tracking Area is similar to the RA of 2G/3G) of evolvement network.Working as a multimode UE like this moves in these zones, if there is not certain mechanism, can cause frequent network registration process, enter RA1 to the SGSN of 2G/3G (Serving GPRS SupportNode as UE, Serving GPRS Support Node) registration, when UE enters TA1 then again to the MME/UPE of evolvement network registration,, UE enters RA1 again to the SGSN of 2G/3G registration when moving out TA1 again.The purpose of registration is to make network paging still to bring a large amount of register command expenses to UE in certain RAT.

Limitation signaling proposes for addressing this problem between Inter RAT, has proposed eight kinds of methods at the specification document TR23.882 of 3GPP SAE (SystemArchitecture Evolution, System Architecture Evolution) and has avoided this problem.Its thinking is that UE attach post-registration is to a kind of access network (2G/3G network or evolvement network), UE is registered to another access network after moving to another access network more afterwards, like this, UE just has been registered to two kinds of connecting systems simultaneously, and UE moves and need not initiate any registration process at the corresponding registration area (RA or TA) of these two networks afterwards.

UE is registered to association between heterogeneous networks, and to set up process as follows:

1) as shown in Figure 3,, switches to the signaling diagram of 2G/3G then for UE is attached to the SAE network

Concrete grammar is as follows:

Step 101, UE send to MME/UPE and adhere to request, have IMSI and default APN, and request registration is to network;

Step 102, MME/UPE send authentication request to UE, have the authentication relevant parameter, and UE is authenticated;

Step 103, UE are to MME/UPE loopback Authentication Response;

Step 104, MME/UPE send register requirement with the related HSS that is registered between MME/UPE and the UE;

Step 105, HSS send registration confirmation message to MME/UPE, receive the registration of MME/UPE, and issue the relevant signatory parameter of UE;

Step 106, MME/UPE send registration to UE and receive message, distribute S-TMSI and S-RA, and default IP configuration, and UE finishes the registration process of registration SAE.

Step 107, UE move to the 2G/3G network, initiate the RAU request; Have S-TMSI and S-RA that evolvement network distributes;

Step 108, SGSN send the UE context request message to MME/UPE, have S-TMSI and S-RA that evolvement network distributes, ask synchronous UE related context; MME/UPE back response message is returned UE context and IMSI;

Step 109, SGSN and UE carry out the authentication process, and this step is optional;

Step 110, SGSN send register requirement to HSS, and the association between UE and the SGSN is registered in request; HSS sends accreditation verification to SGSN, and returns the relevant CAMEL-Subscription-Information of UE;

Step 111, SGSN send UE context confirmation of synchronization message to MME/UPE; Finish the UE associated context of setting up between MME/UPE and the SGSN;

Step 112, SGSN send the PDP Context update inquiry information to MME/UPE, and the user's face context between SGSN and the MME/UPE is upgraded in request, and response is upgraded in the MME/UPE loopback;

Step 113, SGSN send RAU to UE and receive message, return S-TMSI, the S-RA of evolvement network, and TMSI, the RA of UMTS (Universal Mobile Telecommunication System, conventional wireless communication systems) network;

Step 114, UE return RAU to SGSN and finish message, finish the related registration between evolvement network and the UMTS network, and follow-up UE when mobile, does not need to carry out registration process again between the Acceditation Area of the Acceditation Area of this evolvement network and UMTS network.

2) as shown in Figure 4, for UE is attached to the UMTS network, switch to the signaling diagram of LTE then, detailed process is as follows:

Step 201, UE send to SGSN and adhere to request, and request registration is to the UMTS network;

Step 202, SGSN carry out authentication to UE;

Step 203, SGSN are registered to HSS to the HSS register requirement with the association between UE and the SGSN; HSS returns the relevant CAMEL-Subscription-Information of UE;

Step 204, SGSN send to UE and adhere to reception message, and distribution T MSI and RA finish registration process;

Step 205, UE initiate to activate the PDP Context process to SGSN, and related SGSN and MME/UPE set up default IP bearer service;

Step 206, UE move to the SAE network, initiate the RAU request to MME/UPE, have the TMSI and the RA of UMTS network allocation;

Step 207, MME/UPE send context request message to SGSN, have TMSI and RA, ask synchronous UE MM Context, and SGSN loopback context response information is returned UE MM Context and IMSI;

Carry out the authentication process between step 208, MME/UPE and the UE; This step is optional;

Step 209, MME/UPE send context acknowledgement message to SGSN, set up the associated context between MME/UPE, the SGSN;

Step 210, MME/UPE send register requirement to HSS, with the related HSS that is registered between MME/UPE and the UE; HSS loopback acknowledge message is returned the relevant signatory parameter of UE;

Step 211, MME/UPE send RAU to UE and receive message, distribute S-TMSI, S-RA and TMSI, RA;

Step 212, UE send RAU to MME/UPE and finish message; Finish the related registration between evolvement network and the UMTS network, follow-up UE when mobile, does not need to carry out registration process again between the Acceditation Area of the Acceditation Area of this evolvement network and UMTS network;

After step 213, UE move the new RA of 2G/3G network, send the RAU request message, have S-TMSI, S-RA and TMSI, RA to SGSN;

After step 214, SGSN receive request, send the UE context request message to MME/UPE, MME/UPE is to synchronous UE context of SGSN and IMSI;

Step 215, SGSN send register requirement to HSS, and being associated among the HSS between UE and the SGSN registered, and HSS returns acknowledge message;

Step 216, SGSN return RAU to UE and receive message, have new S-TMSI, S-RA and TMSI, RA.

3) as shown in Figure 5, be the signaling diagram of downlink data transmission process, detailed process is described as follows:

If UE is the 2G/3G network is connection status, when then execution in step 301a, downlink data arrived, MME/UPE directly was handed down to UE in the 2G/3G network.

If UE is the LTE network is connection status, when then execution in step 301b, downlink data arrived, MME/UPE directly was handed down to UE in the LTE network.

If UE is a notconnect state at 2G/3G network and LTE network; Then carry out:

Step 301c, MME/UPE initiate paging request message to SGSN, request SGSN paging UE in the 2G/3G network;

Step 302c, SGSN, MME/UPE be paging UE in 2G/3G network and LTE network respectively;

If step 303c UE quarters at the 2G/3G network, then UE is to SGSN loopback page response;

Step 304c, SGSN transmit page response to MME/UPE;

If step 305c UE is in the IDLE state, then SGSN initiates the RAB loading establishing process to RNC, sets up the RAB carrying between RNC and the SGSN, and UE is in the URA-PCH state else if, does not need to rebulid the RAB carrying;

Step 306c, MME/UPE are changed to the 2G/3G connection status with the mobility management states of UE, issue downlink data at the 2G/3G network to UE;

If step 303d UE quarters at the LTE network, then UE is to MME/UPE loopback page response;

Step 304d, MME/UPE are changed to the LTE connection status with the mobility management states of UE, initiate to set up the RAB carrying between MME/UPE and the eNodeB;

Step 305d, MME/UPE issue downlink data at the LTE network to UE;

Step 306d, MME/UPE notice SGSN stops at the paging among the 2G/3G.

After UE is registered to two networks, moves and need not initiate any registration process at the corresponding registration area (RA or TA) of these two networks, because network need be known the position of UE in network, UE need carry out cycle RAU process.Promptly there are the following problems, and under limitation signaling, UE is execution cycle RAU process in two networks how, so that network is determined the position that UE is current,, it carried out implicit detach as UE not during service area at two kinds of networks?

1, UE only is registered in the UMTS network, will adopt two timing functions (cycle RAU timer, move can reach timer) to safeguard the attachment state of UE.

1) after UE is attached to network, network node is provided with the periodically duration of RAU of UE, and determines to move and can reach timing length, and the latter is longer slightly than the former;

2) after UE enters the IDLE state, UE and network node start-up period RAU timer respectively can reach two timers of timer with moving; When UE behind cycle RAU timer expiry, UE will initiate cycle RAU process, upgrade the mobility management states of UE in RA;

3) if move can reach timer expiry after, network node is not also received the RAU request message that UE initiates, network node carries out implicit detach to UE so; To discharge relevant MM Context resource.

2, UE only is registered in the SAE network, has above-mentioned mechanism equally, to guarantee the attachment state of UE among the LTE/SAE.

3, under the limitation signaling mode, when UE is registered to after two kinds of networks set up association, existing two kinds of methods are at present:

First kind is to coordinate (Co-ordination) control mode:

1) after UE is registered in two networks, set up two kinds of associations between the RAT after, two kinds of RAT network nodes coordinate to obtain a timer Tx=Min to two cycle timer T1, T2, and (T1 T2) distributes to UE; As above carrying out cycle RAU timer in Fig. 3 step 108, Fig. 4 step 107, the step 114 consults; In last Fig. 3 step 113, Fig. 4 step 211,216, distribute to UE;

2) on UE, after cycle RAU timer Tx is overtime, UE initiates cycle RAU process in the current RAT that is stationed, the network node of the another kind of RAT of this network node request is revised related, the cycle of carrying out RAU timer is consulted, and the network node of another kind of RAT restarts relevant the moving of this UE and can reach timer simultaneously.

But this control mode has following defective:

1, the each cycle RAU of UE process, perhaps O﹠amp; M operation (for example adjustment cycle RAU timer etc.), all need carry out associated synchronisation between two kinds of RAT systems upgrades, the waste Internet resources.

2, enter the IDLE state as UE, when quartering at a kind of RAT for a long time, when downlink data arrives, always will in two kinds of RAT systems, carry out paging, waste network, interface-free resources.

Second kind is principal and subordinate (Master-Slaver) control mode:

1) UE is attached to two kinds of networks, and sets up related back (always determine two network nodes, one of them is main, by master network node administration UE context, keeps up-to-date), distributes UE cycle RAU timer by the master network node;

2) behind the last cycle RAU of the UE timer expiry, in the current RAT that is stationed, initiate cycle RAU process, if the current RAT network of being stationed of UE is from network, then from network to the synchronous UE related context of master network node, restart to move comprising master network and can reach timer, assignment period RAU timer;

3) if move can reach timer expiry after, master network is not also received the RAU message that UE initiates, master network will carry out implicit detach to UE so, discharge the management between two networks, and the UE MM Context resource of being correlated with.

But this control mode has following defective:

When 1, UE quartered at from network for a long time, UE cycle RAU process all needed to the master network node synchronous, the waste Internet resources.

2, for the UE of IDLE state, when downlink data arrives, always in two systems, carry out paging, waste network, interface-free resources.

Summary of the invention

The purpose of embodiments of the invention is the defectives at above-mentioned prior art, a kind of network concealed separation method of user terminal is provided, after user terminal is registered to two networks of inter-RAT (LTE network and 2G/3G network), two network nodes are independently controlled the mode of the MM Context of user terminal, when user terminal is registered to after two networks set up association, make that working as user terminal quarters among a kind of RAT for a long time, after entering the Idle state, when downlink data arrives, only in current RAT network of being stationed, carry out paging; Two networks are managed alone, the cycle RAU timer of configure user terminal, and are few as far as possible to existing UMTS systematic influence; Reduce by two internetwork associated context synchronous signalings.

For achieving the above object, the invention provides a kind of network concealed separation method of user terminal, comprise the steps:

After user terminal is registered to evolvement network and 2G/3G network, set up two associations between the network;

When user terminal entered idle condition in a kind of network, this network node starts moving of this user terminal can reach timer;

This network node moves and can reach timer expiry, put this user terminal at this network and be changed to accurate latent released state, if this user terminal in two networks latent released state that all is as the criterion, then two networks separate user terminal is latent.

In the technique scheme, described set up two associations between the network after, two network nodes distribute one-period Routing Area Update timer to give user terminal respectively, above-mentioned two cycle Routing Area Update timers all can reach timer less than above-mentioned moving, move and can reach timer expiry, then the Routing Area Update timer is necessarily overtime.

Has common user's face anchor point (this user's face anchor point may be unified with the UPE of SAE) between described evolvement network and 2G/3G network, if described this user terminal is in two networks latent released state that all is as the criterion, then two networks are specially user terminal latent the separation: this user terminal of this network node reports described user's face anchor point in this network latent released state that is as the criterion; Described user's face anchor point judges whether this user terminal all is accurate latent released state, if then two networks separate user terminal is latent, and this user terminal is set to released state in two networks.Perhaps be specially: this user terminal of this network node is notified the node of another network in the mid-latent released state that is as the criterion of this network, if in this user terminal of another network latent released state that also is as the criterion, then two network nodes separate user terminal is latent, and this user terminal is set to released state.Also can be specially: this user terminal of network node is in the mid-latent released state that is as the criterion of this network, inquire about this user terminal and whether also be in accurate latent released state at another network, if then two network nodes separate this user terminal is latent, and this user terminal is changed to released state.

Therefore, after the user terminal of the embodiment of the invention is registered to two networks of inter-RAT (LTE network and 2G/3G network), two network nodes are independently controlled the MM Context of user terminal, when user terminal is registered to after two networks set up association, two networks are managed alone, the configure user terminal, and are few as far as possible to existing UMTS systematic influence; Reduce by two internetwork associated context synchronous signalings, thereby saved Internet resources.

Below by drawings and Examples, technical scheme of the present invention is described in further detail.

Description of drawings

Fig. 1 is the evolvement network framework schematic diagram of prior art;

Fig. 2 is many RAT schematic network structure of prior art;

Fig. 3 switches to the signaling diagram of 2G/3G network then for the UE of prior art is attached to the SAE network;

Fig. 4 switches to the signaling diagram of LTE network then for the UE of prior art is attached to the UMTS network;

Fig. 5 is the signaling diagram of the downlink data transmission process of prior art;

Fig. 6 is that UE goes up the regularly schematic diagram of timeout treatment process of cycle RAU in the network concealed separation method of user terminal of the embodiment of the invention;

Fig. 7 is that UE goes up RAT and changes the processing procedure schematic diagram in the network concealed separation method of user terminal of the embodiment of the invention;

Fig. 8 switches to the signaling diagram of 2G/3G network then for UE in the network concealed separation method of the user terminal of the embodiment of the invention is attached to the SAE network;

Fig. 9 switches to the signaling diagram of LTE network then for UE in the network concealed separation method of the user terminal of the embodiment of the invention is attached to the UMTS network;

Figure 10 is the signaling diagram that is triggered UE implicit detach process in the network concealed separation method of user terminal of the embodiment of the invention by UPE;

The signaling diagram of downlink data transmission course when Figure 11 is as the criterion the implicit detach state for the present invention with UE in the network concealed separation method of the family terminal of embodiment in the UMTS network;

The signaling diagram of downlink data transmission course when Figure 12 is as the criterion the implicit detach state for the present invention with UE in the network concealed separation method of the family terminal of embodiment in the SAE network;

Figure 13 is the signaling diagram of the present invention with the UE implicit detach process of advice method MME/SGSN triggering in the network concealed separation method of the family terminal of embodiment;

The signaling diagram of downlink data transmission course when Figure 14 is as the criterion the implicit detach state for the present invention with UE in the network concealed separation method of the family terminal of embodiment in the UMTS network;

The signaling diagram of downlink data transmission course when Figure 15 is as the criterion the implicit detach state for the present invention with UE in the network concealed separation method of the family terminal of embodiment in the SAE network;

Figure 16 triggers the signaling diagram of UE implicit detach process with MME/SGSN under the inquiry mode in the network concealed separation method of the family terminal of embodiment for the present invention;

The signaling diagram of downlink data transmission course when Figure 17 is as the criterion the implicit detach state for the present invention with UE in the network concealed separation method of the family terminal of embodiment in the UMTS network;

The signaling diagram of downlink data transmission course when Figure 18 is as the criterion the implicit detach state for the present invention with UE in the network concealed separation method of the family terminal of embodiment in the SAE network.

Embodiment

After user terminal is registered to two networks of inter-RAT (LTE network and 2G/3G network), two network nodes are independently controlled the mode of the MM Context of user terminal, as user terminal (UMTSEquipment, UE) be registered to after two networks set up association, make that working as UE quarters among a kind of RAT for a long time, after entering the Idle state, when downlink data arrives, only in current RAT network of being stationed, carry out paging; Two networks are managed alone, the cycle RAU timer of configuration UE, and are few as far as possible to existing UMTS systematic influence; Reduce by two internetwork associated context synchronous signalings.

After UE is registered to long-term evolving network and 2G/3G network, set up two associations between the network, two network nodes distribute one-period RAU timer to give UE respectively;

When UE enters free time during (Idle) state, this UE starts the cycle RAU timer of this network correspondence at a kind of network, and this network node starts moving of this UE can reach timer;

If the last cycle RAU of UE timer expiry, then UE judges whether this cycle routing update timer is the current network allocation of being stationed of UE, if then this UE initiates periodically RAU in this networking; Otherwise this UE writes down the cycle RAU timer expiry of this network, stops this cycle RAU timer, initiates cycle RAU after user terminal moves to this network immediately; Do not initiate RAU if the last cycle RAU of UE timer is overtime;

Network node upgrades the mobility management states of this UE at this network after receiving the cycle RAU request of UE, redistributes cycle RAU timer, restarts to move to reach timer;

After this network node moves and can reach timer expiry, this user terminal is changed to accurate latent released state, the latent released state if this user terminal also is as the criterion in another network, then two networks separate user terminal is latent, and the mobility management states of this UE on network is set to released state.

The last cycle RAU of UE timer expiry processing procedure as shown in Figure 6, the type of T (Timer) RAU of indication cycle timer, for example timer of SAE network or UMTS network allocation.

The RAT network type that T (RAT) expression UE is stationed, routine LTE network or 2G/3G network type if T (Timer) is that SAE network, T (RAT) they are the LTE network, all are evolvement networks, promptly expression is consistent.

Flag (T) record cycle RAU timer expiry incident, it is not overtime for example to be set to 0 expression, and 1 expression is overtime;

Handling process is:

Step 401, after UE goes up cycle RAU timer expiry, UE judges whether this cycle RAU timer is the current RAT network allocation of being stationed of UE;

Step 402 is if then UE initiates cycle RAU process in this RAT;

Step 403, if not, then UE only writes down the relevant cycle RAU timer expiry incident of this RAT, and stops this cycle RAU timer;

As shown in Figure 7, for moving to the processing procedure figure of another RAT as UE from a RAT, handling process is:

Step 501, UE move to another RAT network;

Step 502, UE judge be stationed another RAT network RA whether with originally whether changed in the RA district of this RAT network registry;

If step 503 has changed, then in this RAT, directly initiate the RAU process;

If step 504 does not change, judge then whether the cycle RAU timer of this RAT correspondence is overtime;

If overtime, then in this RAT, initiate cycle RAU process.

Otherwise, do not initiate cycle RAU process.

As shown in Figure 8, be attached to the signaling diagram that the SAE network switches to the 2G/3G network then for UE.Detailed process is as follows:

Step 601, UE send to MME/UPE and adhere to request, have IMSI and default APN, and request registration is to network;

Step 602, MME/UPE send authentication request to UE, have the authentication relevant parameter, and UE is authenticated;

Step 603, UE are to MME/UPE loopback Authentication Response;

Step 604, MME/UPE send register requirement with the related HSS that is registered between MME/UPE and the UE;

Step 605, HSS send registration confirmation message to MME/UPE, receive the registration of MME/UPE, and issue the relevant signatory parameter of UE;

Step 606, MME/UPE send registration to UE and receive message, distribute S-TMSI and S-RA, and default IP configuration, and UE finishes the registration process of registration SAE; Wherein MME/UPE distributes the cycle RAU timer (S-RAUtimer) in the SAE network; UE starts this timer after entering the LTE notconnect state, and corresponding overtime sign resets;

Step 607, UE move to the 2G/3G network, initiate the RAU request; Have S-TMSI and S-RA that evolvement network distributes;

Step 608, SGSN send the UE context request message to MME/UPE, have S-TMSI and S-RA that evolvement network distributes, ask synchronous UE related context; MME/UPE back response message is returned UE context and IMSI;

Step 609, SGSN and UE carry out the authentication process, and this step is optional;

Step 610, SGSN send register requirement to HSS, and the association between UE and the SGSN is registered in request; HSS sends accreditation verification to SGSN, and returns the relevant CAMEL-Subscription-Information of UE;

Step 611, SGSN send UE context confirmation of synchronization message to MME/UPE; Finish the UE associated context of setting up between MME/UPE and the SGSN;

Step 612, SGSN send the PDP Context update inquiry information to MME/UPE, and the user's face context between SGSN and the MME/UPE is upgraded in request, and response is upgraded in the MME/UPE loopback;

Step 613, SGSN send RAU to UE and receive message, return S-TMSI, the S-RA of evolvement network and TMSI, the RA of UMTS network; SGSN distributes the cycle RAU timer (RAUtimer) in the UMTS network; UE starts this timer after entering the 2G/3G notconnect state, and corresponding overtime sign resets;

Step 614, UE return RAU to SGSN and finish message, finish the related registration between evolvement network and the UMTS network, and follow-up UE when mobile, does not need to carry out registration process again between the Acceditation Area of the Acceditation Area of this evolvement network and UMTS network.

As shown in Figure 9, for UE is attached to the UMTS network, switch to the signaling diagram of SAE network then, detailed process is as follows:

Step 701, UE send to SGSN and adhere to request, and request registration is to the UMTS network;

Step 702, SGSN carry out authentication to UE;

Step 703, SGSN are registered to HSS to the HSS register requirement with the association between UE and the SGSN; HSS returns the relevant CAMEL-Subscription-Information of UE;

Step 704, SGSN send to UE and adhere to reception message, and distribution T MSI and RA finish registration process; Wherein SGSN distributes the cycle RAU timer (RAUtimer) in the UMTS network; UE starts this timer after entering the 2G/3G notconnect state, and corresponding overtime sign resets;

Step 705, UE initiate to activate the PDP Context process to SGSN, and related SGSN and MME/UPE set up default IP bearer service;

Step 706, UE move to the SAE network, initiate the RAU request to MME/UPE, have the TMSI and the RA of UMTS network allocation;

Step 707, MME/UPE send context request message to SGSN, have TMSI and RA, ask synchronous UE MM Context, and SGSN loopback context response information is returned UE MM Context and IMSI;

Carry out the authentication process between step 708, MME/UPE and the UE; This step is optional;

Step 709, MME/UPE send context acknowledgement message to SGSN, set up the associated context between MME/UPE, the SGSN;

Step 711, MME/UPE send RAU to UE and receive message, distribute S-TMSI, S-RA and TMSI, RA; Wherein MME/UPE distributes the cycle RAU timer (S-RAUtimer) in the SAE network; UE starts this timer after entering the LTE notconnect state, and corresponding overtime sign resets;

Step 712, UE send RAU to MME/UPE and finish message; Finish the related registration between evolvement network and the UMTS network, follow-up UE when mobile, does not need to carry out registration process again between the Acceditation Area of the Acceditation Area of this evolvement network and UMTS network;

After step 713, UE move the new RA of 2G/3G network, send the RAU request message, have S-TMSI, S-RA and TMSI, RA to SGSN;

After step 714, SGSN receive request, send the UE context request message to MME/UPE, MME/UPE is to synchronous UE context of SGSN and IMSI;

Step 715, SGSN send register requirement to HSS, and being associated among the HSS between UE and the SGSN registered, and HSS returns acknowledge message;

Step 716, SGSN return RAU to UE and receive message, have new S-TMSI, S-RA and TMSI, RA; Wherein SGSN redistributes a cycle RAU timer (RAUtimer) in the UMTS network; UE starts this timer after entering the 2G/3G notconnect state, and corresponding overtime sign resets.

If adopt the method for trigger-type, has common user's face anchor point in this embodiment between evolvement network and 2G/3G network, this user's face anchor point may be unified with the UPE of SAE, be the signaling diagram that is triggered UE implicit detach process by UPE/USER PLANE ANCHOR as shown in figure 10, detailed process is described as follows:

Step 801, UE are registered to two networks of SAE, UMTS, have set up a UE associated context between MME, SGSN, are attached to the SAE network referring to above-mentioned UE, switch to 2G/3G network and UE then and are attached to the detailed process that the UMTS network switches to SAE then;

Step 802, relevant the moving of the last UE of SGSN can reach timer expiry (UE does not initiate RAU request etc. at the area of coverage or the other reasons of UMTS network);

The mobility management states that step 803, SGSN the are revised UE implicit detach state that is as the criterion, send the UE state request of upgrading to UPE/USERPLANE ANCHOR, the 2G/3G network mobility controlled state of revising UE on the UPE/USER PLANE ANCHOR implicit detach state that is as the criterion continues to wait for that the state that MME goes up UE changes;

Step 804, relevant the moving of the last UE of MME can reach timer expiry (UE does not initiate RAU request etc. at the area of coverage or the other reasons of SAE network);

The mobility management states that step 805, MME the are revised UE implicit detach state that is as the criterion, send to upgrade the request of UE state to UPE/USERPLANE ANCHOR, the LTE network mobility controlled state of the modification UE implicit detach state that is as the criterion UPE/USER PLANE ANCHOR on;

Find on step 806, the UPE/USER PLANE ANCHOR that UE is accurate implicit detach state at the mobility management states of 2G/3G, LTE network, notice MME, SGSN unite the implicit detach process of carrying out UE, and revising UE is released state at the state of two networks.

In this manner, after UE is in released state, when receiving the downlink data of UE, directly loses UPE/USER PLANE ANCHOR; If UE only enters accurate implicit detach state in a kind of RAT network, then the downlink data transmission process embodiment of UE is as follows:

First when UE only the mobility management states in the UMTS network be as the criterion the implicit detach state as shown in figure 11.Detailed process is described as follows:

Step 901, UPE/USER PLANE ANCHOR receive the downlink data that UE is relevant;

If UE is in the LTE connection status,

Step 902, UPE/USER PLANE ANCHOR directly issue downlink data at the LTE network and give UE;

If UE is in the LTE notconnect state

Step 903a, UPE/USER PLANE ANCHOR send the data notification request to MME, carry out normal paging;

Step 904a, MME send beep-page message to eNodeB, paging UE in the LTE network;

Step 905a, UE loopback page response are given MME;

Step 906a, MME send data notification to UPE/USER PLANE ANCHOR and confirm, indication UPE/USER PLANE ANCHOR issues downlink data;

Step 907a, MME and UPE/USER PLANE ANCHOR, eNodeB carry out the RAB loading establishing process between eNodeB, the UPE/USERPLANE ANCHOR.If wherein session management is on MME, then the RAB that is set up between eNodeB and the UPE/USER PLANE ANCHOR by the MME indication carries; If session management is on UPE/USER PLANE ANCHOR, then the RAB that is set up between eNodeB and the UPE/USER PLANE ANCHOR by UPE/USER PLANE ANCHOR carries;

Step 908a, UPE/USER PLANE ANCHOR issue downlink data and give UE in the LTE network;

The common paging of above-mentioned steps 903a-step 908a flow performing, downlink data is handed down to UE in LTE;

Following step 903b-step 912b flow performing paging coordination process, downlink data is handed down to UE in 2G/3G;

Step 903b, UPE/USER PLANE ANCHOR send the data notification request to MME, have downlink data need be handed down to UE in the 2G/3G network indication;

Step 904b, MME send beep-page message to eNodeB, paging UE in the LTE network, and the RAT that has a UE page response is designated as the 2G/3G network;

After step 905b, UE receive beep-page message, and, then initiate the RAU request to SGSN at the 2G/3G area of coverage;

Step 906b, SGSN initiate to obtain the UE context procedures to MME, upgrade the UE associated context on SGSN, the MME;

Step 907b, MME send the data notification acknowledge message to UPE/USER PLANE ANCHOR, and indication issues downlink data;

Step 908b, SGSN send the RAU acknowledge message to UE, have new TMSI, RA and cycle RAU timer;

Step 909b, UE send RAU to SGSN and finish message, finish the RAU process;

Step 910b, SGSN send UE state updating message to UPE/USER PLANE ANCHOR, and the 2G/3G mobility management states that upgrades UE is a connection status;

Step 911b, set up RAB carrying, SGSN and RNC execution RAB loading establishing process if desired;

Step 912b, UPE/USER PLANE ANCHOR issue downlink data in the 2G/3G network.

Illustrate: in above-mentioned steps step 907b-step 912b, because concurrent the carrying out of each network node possibility, so the order of part wherein can change front and back.

Second when UE only the mobility management states in the SAE network be as the criterion the implicit detach state as shown in figure 12; Detailed process is described as follows:

Step 1001, UPE/USER PLANE ANCHOR receive the downlink data that UE is relevant;

If UE is in the 2G/3G connection status,

Step 1002, UPE/USER PLANE ANCHOR directly issue downlink data at the 2G/3G network and give UE;

If UE is in the LTE notconnect state

Step 1003a, UPE/USER PLANE ANCHOR send the data notification request to SGSN, carry out normal paging;

Step 1004a, SGSN send beep-page message to RNC, paging UE in the 2G/3G network;

Step 1005a, UE loopback page response are given SGSN;

Step 1006a, MME send data notification to UPE/USER PLANE ANCHOR and confirm, indication UPE/USER PLANEANCHOR issues downlink data;

Step 1007a, set up RAB carrying, SGSN and RNC execution RAB loading establishing process if desired;

Step 1008a, UPE/USER PLANE ANCHOR issue downlink data at the 2G/3G network and give UE.

The common paging of above-mentioned steps 1003a-step 1007a flow performing, downlink data is handed down to UE in 2G/3G;

Following step 1003b-step 1012b flow performing paging coordination process, downlink data is handed down to UE in LTE;

Step 1003b, UPE/USER PLANE ANCHOR send the data notification request to SGSN, have downlink data need be handed down to UE in the LTE network indication;

Step 1004b, SGSN send beep-page message to RNC, paging UE in the 2G/3G network, and the RAT that has a UE page response is designated as the LTE network;

After step 1005b, UE receive beep-page message, and, then initiate the RAU request to MME at the LTE area of coverage;

Step 1006b, MME initiate to obtain the UE context procedures to SGSN, upgrade the UE associated context on SGSN, the MME;

Step 1007b, SGSN send the data notification acknowledge message to UPE/USER PLANE ANCHOR, stop paging, and indication issues downlink data;

Step 1008b, MME send the RAU acknowledge message to UE, have new S-TMSI, S-RA and cycle RAU timer;

Step 1009b, UE send RAU to MME and finish message, finish the RAU process;

Step 1010b, MME send UE state updating message to UPE/USER PLANE ANCHOR, and the LTE mobility management states that upgrades UE is a connection status;

Step 1011b, MME and UPE/USER PLANE ANCHOR, eNodeB carry out eNodeB, UPE/USER

RAB loading establishing process between the PLANE ANCHOR.If wherein session management is on MME, then the RAB that is set up between eNodeB and the UPE/USER PLANE ANCHOR by the MME indication carries; If session management is on UPE/USER PLANE ANCHOR, then the RAB that is set up between eNodeB and the UPE/USER PLANE ANCHOR by UPE/USER PLANE ANCHOR carries;

Step 1012b, UPE/USER PLANE ANCHOR issue downlink data in the LTE network.

Illustrate: in above-mentioned steps step 1007b-1011b, because concurrent the carrying out of each network node possibility, so the order of part wherein can change front and back.

If the employing advice method triggers UE implicit detach process by MME/SGSN, as shown in figure 13, detailed process is described as follows:

Step 1101, UE are registered to two networks of SAE, UMTS, between MME, SGSN, set up a UE associated context, be attached to the SAE network referring to above-mentioned UE, switch to 2G/3G network and UE then and be attached to the detailed process that the UMTS network switches to SAE then;

Moving of step 1102, the last UE correspondence of SGSN can reach timer expiry (UE does not initiate RAU request etc. at the area of coverage or the other reasons of UMTS network);

The mobility management states that step 1103, SGSN the are revised UE implicit detach state that is as the criterion sends the UE state request of upgrading to MME, the last 2G/3G network mobility controlled state of revising UE of the MME implicit detach state that is as the criterion;

Relevant moving can reach timer expiry (UE does not initiate RAU request etc. at the area of coverage or the other reasons of SAE network) if step 1304 MME goes up UE, then the MME LTE network mobility controlled state of the revising UE implicit detach state that is as the criterion;

Step 1105, UE are accurate implicit detach states at the mobility management states of 2G/3G, LTE network, and MME notice MME, SGSN unite the implicit detach process of carrying out UE, and revising UE is released state at the state of two networks.

Advice method is a coodination modes, initiates to unite the implicit detach process of carrying out UE by last RAT network node that enters accurate implicit detach state.

In this manner, after UE is in released state, when receiving the downlink data of UE, directly loses UPE/USER PLANE ANCHOR; If UE only enters accurate implicit detach state in a kind of RAT network, then the downlink data transmission process of UE is as follows:

The first, as shown in figure 14, detailed process is described as follows when UE is as the criterion the implicit detach state in the UMTS network:

Step 1201, UPE/USER PLANE ANCHOR receive the downlink data that UE is relevant, if UE is in LTE or 2G/3G connection status, then issues downlink data and give UE in the network of correspondence;

If step 1202 UE is in the notconnect state of LTE and 2G/3G;

Step 1203a, UPE/USER PLANE ANCHOR send the data notification request to MME, carry out normal paging;

Step 1204a, MME find that UE is in accurate implicit detach state in the UMTS network, and then MME only sends beep-page message, paging UE in the LTE network to eNodeB;

Step 1205a, UE loopback page response are given MME;

Step 1206a, MME send data notification to UPE/USER PLANE ANCHOR and confirm, indication UPE/USER PLANE ANCHOR issues downlink data;

Step 1207a, MME and UPE/USER PLANE ANCHOR, eNodeB carry out the RAB loading establishing process between eNodeB, the UPE/USERPLANE ANCHOR.If wherein session management is on MME, then the RAB that is set up between eNodeB and the UPE/USER PLANE ANCHOR by the MME indication carries; If session management is on UPE/USER PLANE ANCHOR, then the RAB that is set up between eNodeB and the UPE/USER PLANE ANCHOR by UPE/USER PLANE ANCHOR carries;

Step 1208a, UPE/USER PLANE ANCHOR issue downlink data and give UE in the LTE network.

State the common paging of step 1203a-step 1208a flow performing, downlink data is handed down to UE in LTE;

Following step 1203b-step 1212b flow performing paging coordination process, downlink data is handed down to UE in 2G/3G;

Step 1203b, UPE/USER PLANE ANCHOR send the data notification request to MME, have downlink data need be handed down to UE in the 2G/3G network indication;

Step 1204b, MME find that UE is in accurate implicit detach state in the UMTS network, and then MME only sends beep-page message to eNodeB, paging UE in the LTE network, and the RAT that has a UE page response is designated as the 2G/3G network;

After step 1205b, UE receive beep-page message, and, then initiate the RAU request to SGSN at the 2G/3G area of coverage;

Step 1206b, SGSN initiate to obtain the UE context procedures to MME, upgrade the UE associated context on SGSN, the MME, and wherein will to upgrade UE be connection status at the mobility management states of 2G/3G to MME;

Step 1207b, MME send the data notification acknowledge message to UPE/USER PLANE ANCHOR, and indication issues downlink data;

Step 1208b, SGSN send the RAU acknowledge message to UE, have new TMSI, RA and cycle RAU timer;

Step 1209b, UE send RAU to SGSN and finish message, finish the RAU process;

Step 1210b, set up RAB carrying, SGSN and RNC execution RAB loading establishing process if desired;

Step 1211b, UPE/USER PLANE ANCHOR issue downlink data in the 2G/3G network.

Illustrate: in above-mentioned steps 1207b-1210b, because concurrent the carrying out of each network node possibility, so the order of part wherein can change front and back.

Second when UE is as the criterion the implicit detach state in the SAE network signaling diagram as shown in figure 15, detailed process is described as follows:

Step 1301, UPE/USER PLANE ANCHOR receive the downlink data that UE is relevant, if UE is in LTE or 2G/3G connection status, then issues downlink data and give UE in the network of correspondence.

If step 1302 UE is in the notconnect state of LTE and 2G/3G;

Step 1303a, UPE/USER PLANE ANCHOR send the data notification request to MME, carry out normal paging;

Step 1304a, MME find that UE is in accurate implicit detach state in the SAE network, and then MME only sends paging request message, paging UE in the 2G/3G network to SGSN;

Step 1305a, UE loopback page response are given SGSN, and SGSN is transmitted to MME.

Step 1306a, MME send data notification to UPE/USER PLANE ANCHOR and confirm, indication UPE/USER PLANE ANCHOR issues downlink data.

Step 1307a, set up RAB carrying, SGSN and RNC execution RAB loading establishing process if desired;

Step 1308a, UPE/USER PLANE ANCHOR issue downlink data at the 2G/3G network and give UE.

The common paging of above-mentioned steps 1303a-step 1308a flow performing, downlink data is handed down to UE in 2G/3G;

Following step 1303b-step 1311b flow performing paging coordination process, downlink data is handed down to UE in LTE;

Step 1303b, UPE/USER PLANE ANCHOR send the data notification request to MME, have downlink data need be handed down to UE in the 2G/3G network indication;

Step 1304b, MME find that UE is in accurate implicit detach state in the SAE network, and then MME only sends the paging request to SGSN, paging UE in the 2G/3G network, and the RAT that has a UE page response is designated as the LTE network;

After step 1305b, UE receive beep-page message, and, then initiate the RAU request to MME at the LTE area of coverage;

Step 1306b, MME initiate to obtain the UE context procedures to SGSN, upgrade the UE associated context on SGSN, the MME;

Step 1307b, SGSN send the data notification acknowledge message to UPE/USER PLANE ANCHOR, stop paging, and indication issues downlink data;

Step 1308b, MME send the RAU acknowledge message to UE, have new S-TMSI, S-RA and cycle RAU timer;

Step 1309b, UE send RAU to MME and finish message, finish the RAU process;

Step 1310b, MME and UPE/USER PLANE ANCHOR, eNodeB carry out the RAB loading establishing process between eNodeB, the UPE/USERPLANE ANCHOR.If wherein session management is on MME, then the RAB that is set up between eNodeB and the UPE/USER PLANE ANCHOR by the MME indication carries; If session management is on UPE/USER PLANE ANCHOR, then the RAB that is set up between eNodeB and the UPE/USER PLANE ANCHOR by UPE/USER PLANE ANCHOR carries;

Step 1311b, UPE/USER PLANE ANCHOR issue downlink data in the LTE network.

Illustrate: in above-mentioned steps step 1307b-step 1311b, because concurrent the carrying out of each network node possibility, so the order of part wherein can change front and back.

Illustrate: the difference of the downlink data transmission process of this mode and other modes is to judge by MME whether UE is in accurate implicit detach state at certain RAT network (LTE or 2G/3G), if then do not initiate paging to this RAT network.

The 3rd adopts inquiry mode, triggers UE implicit detach process as shown in figure 16 by MME/SGSN, and detailed process is described as follows:

Step 1401, UE are registered to two networks of SAE, UMTS, between MME, SGSN, set up a UE associated context, be attached to the SAE network referring to above-mentioned UE, switch to 2G/3G network and UE then and be attached to the detailed process that the UMTS network switches to SAE then.

Moving of step 1402, the last UE correspondence of MME can reach timer expiry (UE does not initiate RAU request etc. at the area of coverage or the other reasons of SAE network); The mobility management states that MME the revises UE implicit detach state that is as the criterion starts a mobility management states timer of inquiring about UE at 2G/3G;

Behind step 1403, the last inquiry of the MME UE state timer expiry, send the request of inquiry UE mobility management states to SGSN,

Step 1404, SGSN return the current mobility management states at the 2G/3G network of UE;

If step 1405 SGSN returns UE at the state of 2G/3G network accurate implicit detach state also the time, be that UE is accurate implicit detach state at the mobility management states of 2G/3G, LTE network, then MME, SGSN unite the implicit detach process of carrying out UE, and revising UE is released state at the state of two networks.

Illustrate: inquiry mode is a coodination modes, promptly unites the implicit detach process of carrying out UE by last query messages triggering MME, SGSN that enters the RAT network node initiation of accurate implicit detach state.

1, be as the criterion the implicit detach state as shown in figure 17 in the UMTS network as UE, detailed process is described as follows:

Step 1501, UPE/USER PLANE ANCHOR receive the downlink data that UE is relevant, if UE is in LTE or 2G/3G connection status, then issues downlink data and give UE in the network of correspondence;

If step 1502 UE is in the notconnect state of LTE and 2G/3G;

Step 1503a, UPE/USER PLANE ANCHOR send the data notification request to MME, carry out normal paging;

Step 1504a, MME send paging request message to SGSN, request SGSN paging UE in the 2G/3G network;

Step 1505a, SGSN find that UE is in accurate implicit detach state, and to MME loopback page response, failure cause is " UE is in accurate implicit detach state ";

Step 1506a, MME send beep-page message to eNodeB, paging UE in the LTE network; This step and top 4a, 5a go up in proper order and can forward and backwardly change.

Step 1507a, UE are to MME loopback page-response message;

Step 1508a, MME send data notification to UPE/USER PLANE ANCHOR and confirm, indication UPE/USER PLANE ANCHOR issues downlink data.

Step 1509a, MME and UPE/USER PLANE ANCHOR, eNodeB carry out the RAB loading establishing process between eNodeB, the UPE/USERPLANE ANCHOR.If wherein session management is on MME, then the RAB that is set up between eNodeB and the UPE/USER PLANE ANCHOR by the MME indication carries; If session management is on UPE/USER PLANE ANCHOR, then the RAB that is set up between eNodeB and the UPE/USER PLANE ANCHOR by UPE/USER PLANE ANCHOR carries.

Step 15010a, UPE/USER PLANE ANCHOR issue downlink data and give UE in the LTE network.

The common paging of above-mentioned 3a-10a flow performing, downlink data is handed down to UE in LTE;

Following 3b-12b flow performing paging coordination process, downlink data is handed down to UE in 2G/3G;

Step 1503b, UPE/USER PLANE ANCHOR send the data notification request to MME, have downlink data need be handed down to UE in the 2G/3G network indication;

Step 1506a, MME send beep-page message to eNodeB, paging UE in the LTE network; This step and top 1504a, 1505a go up in proper order and can forward and backwardly change.

After step 1507b, UE receive beep-page message, and, then initiate the RAU request to SGSN at the 2G/3G area of coverage;

Step 1508b, SGSN initiate to obtain the UE context procedures to MME, upgrade the UE associated context on SGSN, the MME, and wherein will to upgrade UE be connection status at the mobility management states of 2G/3G to MME.

Step 1509b, MME send the data notification acknowledge message to UPE/USER PLANE ANCHOR, stop paging, and indication issues downlink data;

Step 1510b, SGSN send the RAU acknowledge message to UE, have new TMSI, RA and cycle RAU timer;

Step 1511b, UE send RAU to SGSN and finish message, finish the RAU process.

Step 1512b, set up RAB carrying, SGSN and RNC execution RAB loading establishing process if desired.

Step 1513b, UPE/USER PLANE ANCHOR issue downlink data in the 2G/3G network.

Illustrate: in above-mentioned steps step 1507b-step 1513b, because concurrent the carrying out of each network node possibility, so the order of part wherein can change front and back.

2) be as the criterion the implicit detach state as shown in figure 18 in the SAE network as UE, detailed process is described as follows:

Step 1601, UPE/USER PLANE ANCHOR receive the downlink data that UE is relevant, if UE is in LTE or 2G/3G connection status, then issues downlink data and give UE in the network of correspondence;

If step 1602 UE is in the notconnect state of LTE and 2G/3G;

Step 1603a, UPE/USER PLANE ANCHOR send the data notification request to MME, carry out normal paging;

Step 1604a, MME find that UE is in accurate implicit detach state in the SAE network, send paging request message to SGSN, request SGSN paging UE in the 2G/3G network;

Step 1605a, UE are to SGSN loopback page-response message, and SGSN is transmitted to MME;

Step 1606a, MME send data notification to UPE/USER PLANE ANCHOR and confirm, indication UPE/USER PLANE ANCHOR issues downlink data;

Step 1607a, set up RAB carrying, SGSN and RNC execution RAB loading establishing process if desired;

Step 1608a, UPE/USER PLANE ANCHOR issue downlink data and give UE in the 2G/3G network.

The common paging of above-mentioned steps 1603a-step 1608a flow performing, downlink data is handed down to UE in 2G/3G;

Following step 1603b-step 1611b flow performing paging coordination process, downlink data is handed down to UE in LTE;

Step 1603b, UPE/USER PLANE ANCHOR send the data notification request to MME, have downlink data need be handed down to UE in the LTE network indication;

Step 1604b, MME find that UE is in accurate implicit detach state in the SAE network, send paging request message to SGSN, request SGSN paging UE in the 2G/3G network;

After step 1605b, UE receive beep-page message, and, then initiate the RAU request to MME at the LTE area of coverage;

Step 1606b, MME initiate to obtain the UE context procedures to SGSN, and stop paging, upgrade the UE associated context on SGSN, the MME, and wherein will to upgrade UE be connection status at the mobility management states of 2G/3G to SGSN;

Step 1607b, MME send the data notification acknowledge message to UPE/USER PLANE ANCHOR, and indication issues downlink data;

Step 1608b, MME send the RAU acknowledge message to UE, have new S-TMSI, S-RA and cycle RAU timer;

Step 1609b, UE send RAU to MME and finish message, finish the RAU process.

Step 1610b, MME and UPE/USER PLANE ANCHOR, eNodeB carry out the RAB loading establishing process between eNodeB, the UPE/USERPLANE ANCHOR.If wherein session management is on MME, then the RAB that is set up between eNodeB and the UPE/USER PLANE ANCHOR by the MME indication carries; If session management is on UPE/USER PLANE ANCHOR, then the RAB that is set up between eNodeB and the UPE/USER PLANE ANCHOR by UPE/USER PLANE ANCHOR carries;

Step 1611b, UPE/USER PLANE ANCHOR issue downlink data in the LTE network.

In above-mentioned steps step 1607b-step 1611b, because concurrent the carrying out of each network node possibility, so the order of part wherein can change front and back.

The difference of the downlink data transmission process of this mode and other modes is to judge by certain RAT (LTE or 2G/3G) network node (SGSN or MME) whether UE is in accurate implicit detach state, if, then, former because UE is in accurate implicit detach state to MME response failed message.

Separating, unifying of signaling procedure in the above-mentioned signaling diagram and MME, UPE/USER PLANE ANCHOR is irrelevant, and in concrete implementation procedure, if MME, UPE/USER PLANE ANCHOR unification, then signaling procedure therebetween will become inner signaling procedure.

After UE was registered to two RAT networks, two RAT network nodes distributed its cycle RAU timer independently separately of UE; Carry out independently cycle RAU process on the UE.The implementation and the downlink data transmission process thereof of three kinds of different modes of associating implicit detach of two RAT networks.

UPE/USER PLANE ANCHOR triggers the implicit detach process of two network UE;

Advice method, MME/SGSN triggers the implicit detach process of two network UE;

Inquiry mode, MME/SGSN triggers the implicit detach process of two network UE.

Therefore, after user terminal of the present invention is registered to two networks of inter-RAT (LTE network and 2G/3G network), two network nodes are independently controlled the MM Context of user terminal, when user terminal is registered to after two networks set up association, make that working as user terminal quarters among a kind of RAT for a long time, after entering the Idle state, when downlink data arrives, only in current RAT network of being stationed, carry out paging; Two networks are managed alone, the cycle RAU timer of configure user terminal, and are few as far as possible to existing UMTS systematic influence; Reduce by two internetwork associated context synchronous signalings, thereby saved Internet resources.

It should be noted last that, above embodiment is only unrestricted in order to technical scheme of the present invention to be described, although the present invention is had been described in detail with reference to preferred embodiment, those of ordinary skill in the art is to be understood that, can make amendment or be equal to replacement technical scheme of the present invention, and not break away from the spirit and scope of technical solution of the present invention.

Claims

1. the network concealed separation method of a user terminal, comprising following steps:

This network node moves and can reach timer expiry, puts this user terminal latent released state that is as the criterion at this network, if this user terminal in two networks latent released state that all is as the criterion, then two networks separate user terminal is latent.

2. the network concealed separation method of user terminal according to claim 1, wherein, described set up two associations between the network after, two network nodes distribute one-period Routing Area Update timer to give user terminal respectively.

3. the network concealed separation method of user terminal according to claim 2, wherein, described in a kind of network user terminal enter idle condition, when this network node started moving of this user terminal and can reach timer, this user terminal started the cycle Routing Area Update timer of this network correspondence.

4. the network concealed separation method of user terminal according to claim 3, wherein, after described user terminal starts the cycle Routing Area Update timer of this network correspondence, if cycle Routing Area Update timer expiry on the user terminal, then user terminal judges whether this cycle routing update timer is the current network allocation of being stationed of user terminal, if then this user terminal is initiated periodically Routing Area Update in this networking; Otherwise this user terminal writes down the cycle Routing Area Update timer expiry of this network.

5. the network concealed separation method of user terminal according to claim 4, wherein, after network node receives the cycle Routing Area Update request of user terminal, upgrade the mobility management states of this user terminal at this network, redistribute cycle Routing Area Update timer, restart to move and to reach timer.

6. according to the network concealed separation method of claim 4 or 5 described user terminals, wherein, after described this user terminal writes down the cycle Routing Area Update timer expiry of this network, stop this cycle Routing Area Update timer.

7. the network concealed separation method of user terminal according to claim 6, wherein, described user terminal is initiated the cycle Routing Area Update after stopping this cycle Routing Area Update timer immediately after user terminal moves to this network.

8. the network concealed separation method of user terminal according to claim 1 wherein, is describedly put this user terminal latent released state that is as the criterion at this network, if receive downlink data, then the network that is changed to accurate latent released state for this user terminal does not trigger paging.

9. according to the network concealed separation method of claim 1,2,3,4 or 5 described user terminals, has common user's face anchor point between wherein said evolvement network and 2G/3G network, if described this user terminal is in two networks latent released state that all is as the criterion, then two networks are specially user terminal latent the separation:

This user terminal of this network node reports described user's face anchor point in this network latent released state that is as the criterion;

Described user's face anchor point judges whether this user terminal all is accurate latent released state, if then two networks separate user terminal is latent, and this user terminal is set to released state in two networks.

10. according to the network concealed separation method of claim 1,2,3,4 or 5 described user terminals, wherein, if described this user terminal is in two networks latent released state that all is as the criterion, then two networks are specially user terminal latent the separation: this user terminal of this network node is notified the node of another network in the mid-latent released state that is as the criterion of this network, if in this user terminal of another network latent released state that also is as the criterion, then two network nodes separate user terminal is latent, and this user terminal is set to released state.

11. network concealed separation method according to claim 1,2,3,4 or 5 described user terminals, wherein, if described this user terminal is in two networks latent released state that all is as the criterion, then two networks are specially user terminal latent the separation: this user terminal of network node is in the mid-latent released state that is as the criterion of this network, inquire about this user terminal and whether also be in accurate latent released state at another network, if, then two network nodes separate this user terminal is latent, and this user terminal is changed to released state.