CN102104924A

CN102104924A - Method and system for switching networks

Info

Publication number: CN102104924A
Application number: CN2009102594272A
Authority: CN
Inventors: 吴健; 朱伟; 洪劲松; 李大伟
Original assignee: Huawei Technologies Co Ltd
Current assignee: Huawei Technologies Co Ltd
Priority date: 2009-12-18
Filing date: 2009-12-18
Publication date: 2011-06-22
Anticipated expiration: 2029-12-18
Also published as: CN102104924B

Abstract

The invention discloses a method and a system for switching networks, and relates to a mobile communication technology. Switching of user equipment (UE) between a macro network and an access point (AP) system can be realized through a communication interface directly connected between the AP system and the base station control equipment in the macro network. The method provided by the embodiment for switching the networks comprises the following steps that: the AP system receives measurement reports reported by the UE covered by the AP equipment in the AP system, and judges that the UE needs to initiate the switching from the AP system to the macro network; and the AP system switches the UE to the macro network through the communication interface directly connected between the AP system and the base station control equipment in the macro network. The method and the system are suitable for the scenes of switching the UE between different networks.

Description

Internetwork changing method and system

Technical field

The present invention relates to mobile communication technology, relate in particular to a kind of internetwork changing method and system.

Background technology

At the initial stage that makes up 3G network, utilize macro base station usually to realize the network coverage of wider scope.Yet, along with the development of 3G business, the userbase steady-state growth, a large amount of communication services occurs in indoor, particularly occurs in user's the home area, and the extensive grand covering of 3G can't be satisfied the demand that the high-speed data service in the home area covers well.

At present, a kind of novel Home eNodeB has been proposed--universal mobile telecommunications system access point (UniversalMobile Telecommunications System Access Point, UMTS AP), be used to provide indoor covering to family, enterprise or public place.UMTS AP system abbreviates uBro as, the framework of this system as shown in Figure 1, wherein, AP is an access point, be also referred to as Home eNodeB (Home NodeB, HNB), IAD (Access Gateway, AG), be also referred to as the Home eNodeB IAD (Home NodeB GW, HNBGW), it is the IAD of AP, AP is linked into core net by AG, and (Core Network, CN), the interface between AP and the AG is the Iuh interface.

Because operator has adopted grand covering networking early stage, therefore as improving the UMTSAP system that covers and adopt, need be connected with grand network seamless.Referring to Fig. 1, comprise UMTS AP system and macro network system in the system architecture, as RNS (Radio Network Subsystem, RNS).

In realizing process of the present invention, the inventor finds that there are the following problems at least in the prior art:

Under some scenes, can't realize the switching between the grand network of UMTS AP system and 3G.

Summary of the invention

For solving problems of the prior art, embodiments of the invention provide a kind of internetwork changing method and system, can realize the switching between grand network and the AP system.

For achieving the above object, embodiments of the invention adopt following technical scheme:

A kind of internetwork changing method comprises:

The measurement report of the reported by user equipment UE under the AP equipment in the reception AP system of access point AP system covers judges that UE need initiate the switching from the AP system to grand network;

The AP system switches to grand network by direct-connected communication interface between the base station control device in AP system and the grand network with UE.

A kind of communication system, this communication system comprise the access point AP system that communicates with grand network, and wherein, this AP system comprises AP equipment and IAD; This AP system is used for: receive the measurement report of the reported by user equipment UE under the covering of AP equipment, judge that UE need initiate the switching from the AP system to grand network; And, by direct-connected communication interface between the base station control device in AP system and the grand network, UE is switched to grand network.

The technical scheme that the embodiment of the invention provides by between the base station control device in AP system and grand network direct-connected communication interface being set, is carried out the switching of UE between AP system and grand network, has realized the switching between grand network and the AP system.

Description of drawings

In order to be illustrated more clearly in the embodiment of the invention or technical scheme of the prior art, to do to introduce simply to the accompanying drawing of required use in embodiment or the description of the Prior Art below, apparently, accompanying drawing in describing below only is some embodiments of the present invention, for those of ordinary skills, under the prerequisite of not paying creative work, can also obtain other accompanying drawing according to these accompanying drawings.

Fig. 1 is a network architecture schematic diagram of the prior art;

The internetwork changing method schematic flow sheet that Fig. 2 provides for the embodiment of the invention one;

Fig. 3 is the schematic diagram of the agreement that the Iuh interface is supported in the UMTS system;

The principle schematic of switching between the network that Fig. 4 provides for the embodiment of the invention two;

The schematic diagram of the agreement that the Iuh interface that Fig. 5 provides for the embodiment of the invention two is supported;

The internetwork changing method schematic flow sheet that Fig. 6 provides for the embodiment of the invention two;

Another internetwork changing method schematic flow sheet that Fig. 7 provides for the embodiment of the invention two;

The principle schematic of switching between the network that Fig. 8 provides for the embodiment of the invention three;

The principle schematic of switching between the network that Fig. 9 provides for the embodiment of the invention four;

The internetwork changing method schematic flow sheet that Figure 10 provides for the embodiment of the invention four;

Another internetwork changing method schematic flow sheet that Figure 11 A provides for the embodiment of the invention four;

Another internetwork changing method schematic flow sheet that Figure 11 B provides for the embodiment of the invention four;

A kind of communication system architecture schematic diagram that Figure 12 provides for the embodiment of the invention five;

A kind of communication system architecture schematic diagram that Figure 13 provides for the embodiment of the invention six;

A kind of communication system architecture schematic diagram that Figure 14 provides for the embodiment of the invention seven.

Embodiment

Below in conjunction with the accompanying drawing in the embodiment of the invention, the technical scheme in the embodiment of the invention is clearly and completely described, obviously, described embodiment only is the present invention's part embodiment, rather than whole embodiment.Based on the embodiment among the present invention, those of ordinary skills belong to the scope of protection of the invention not making the every other embodiment that is obtained under the creative work prerequisite.

The embodiment of the invention one provides a kind of internetwork changing method, and as shown in Figure 2, this method comprises:

The measurement report of the reported by user equipment UE under the AP equipment in the reception AP system of step 21:AP system covers judges that UE need initiate the switching from the AP network to grand network;

Step 22:AP system switches to grand network by direct-connected communication interface between the base station control device in AP system and the grand network with UE.

Further, can also realize of the switching of grand network by above-mentioned communication interface to the AP system.

Exemplary, above-mentioned grand network can be the grand network of 3G, and above-mentioned AP system can be the UMTSAP system, and above-mentioned communication interface can be the Iur interface.Above-mentioned grand network can also be the grand network of other communication systems, and such as the grand network of 2G, above-mentioned AP system can be GSM AP system, and above-mentioned communication interface can be a direct-connected communication interface between the base station control device in AP system and the 2G system.Certainly, grand network in the scheme of the embodiment of the invention also may be the grand network of other communication systems, such as Time Division-Synchronous Code Division Multiple Access (Time Division-Synchronous Code Division Multiple Access, be called for short: TD-SCDMA), code division multiple access CDMA2000, worldwide interoperability for microwave insert (WorldwideInteroperability for Microwave Access, be called for short: WIMAX) and long evolving system (LongTerm Evolution, be called for short: LTE) system, and the AP system can be the pairing AP of corresponding system system.To this, the present invention does not do qualification.

In step 22, can support the Iur interface by making relevant device in the AP system (, hereinafter directly be called AP, or IAD) as AP equipment, carrying out the switching between AP system and the grand network, thereby realize the switching of UE between grand network and AP system.

The internetwork changing method that the embodiment of the invention two is provided is described below.

The technical scheme of the embodiment of the invention two provides a kind of AP system that supports out that the Iur interface switches, to realize the switching between AP system and the grand network.

For the ease of understanding the technical scheme of the embodiment of the invention, some technical characterictics among the UMTS are carried out simple declaration.Referring to Fig. 1, the interface between AP and the AG is the luh interface, the agreement (protocol stack) that this luh interface is supported, as shown in Figure 3.Wherein, the agreement of key-course mainly comprises Radio Access Network Application Part (Radio Access Network Application Part, RANAP), Home eNodeB applying portion (Home NodeB Application Part, HNBAP) and remote user agent (RANAP User Adaption, RUA) etc.

In the following embodiments, be UMTS AP system with the AP system, grand network is that the scene of the grand network of 3G is the technical scheme that example describes the embodiment of the invention two in detail, but is not limited to this.For example, those skilled in the art are by the content of following description, can know when AP system during,, carry out the switching processing method between AP system and the grand network by direct-connected communication interface in the AP system and between the base station control device in the grand network for the AP system under other standards.

The principle schematic of switching between the network that the embodiment of the invention two provides referring to Fig. 4, has shown the scene of switching to grand network from the AP system among Fig. 4.Wherein, path shown in dotted lines in Figure 42 is the service path of UE before switching, connects the service path of the path 1 shown in the curve of core net, AG, AP, RNC and UE for UE after switching among Fig. 4.

Under this network architecture, go out physical I ur interface by AG, promptly go up the Iur interface that is provided with and be connected to grand network by AG, the Iur interface of realization AP system converges the function with forwards, and necessary Radio Network Subsystem Application Part (Radio Network Subsystem Application Part, RNSAP) protocol layer processing.

AP realizes Iur interface logic function, as service wireless network controller (Serving Radio NetworkController, SRNC), floating radio network controller (DRNC) function and RNSAP protocol layer handle.This Iur interface can be IP-based or based on ATM(Asynchronous Transfer Mode).Be that the AP system can switch to described grand network with described UE by direct-connected Iur interface between the base station control device (as RNC) in AG and the grand network.

Under this network architecture, the Iuh interface between AP and the AG need be supported the carrying (for example being carried on the RUA) to the RNSAP agreement, and the transmission of Iur user face data.To the modification of Iuh protocol stack of the interface referring to Fig. 5.Compare with Fig. 3, the scheme that provides of the embodiment of the invention need be supported the RNSAP protocol processes at key-course as can be seen, need support the transmission of Iur data flow at client layer.

The network architecture of the embodiment of the invention, AG mainly plays forwarding in handoff procedure, realizes above-mentioned Iur interface in the logic function aspect the protocol layer by AP, the compatible preferably existing network architecture, made full use of existing Internet resources, be with a wide range of applications.

Referring to Fig. 6, below UE is described from the switching flow that UMTS AP system switches to the grand network of 3G, comprise the steps:

Step 1:UE sends measurement report (Measurement Report) to AP.

Step 2:AP receives the measurement report from UE, sends Radio Link to AG and sets up request message.

AP is according to the switching of this measurement report judgement needs initiation to grand network, and AP sends Radio Link foundation request (Radio LinkSetup Request) message and gives AG.Set up in the request message at this Radio Link, can carry the address information of AP equipment, this address information comprises user's face IP address and User Datagram Protoco (UDP) udp port.Concrete, AP can carry user's face IP address of AP in transport layer address cell (Transport LayerAddress IE), in binding logo cell (Binding ID IE), insert (the User Datagram Protocol of this Radio Link correspondence, UDP) port, utilize user's face IP address and udp port, can carry out the transmission of user face data between AP and the AG.

Under this network architecture, because AG can't be known to be switched Target RNC extremely before switching, so AP need send to AG with the sign (RNC-ID) of Target RNC.AP can confirm this Target RNC-ID according to adjacent area list information.AP equipment sends the message carry the Target RNC sign to IAD, and is concrete for described IAD recognition objective RNC, and AP can be at least in the following way sends to AG with the Target RNC-ID of needs:

Mode one, modification RNSAP agreement

Set up newly-increased optional cell in the request message at the Radio Link of RNSAP agreement, carry Target RNC-ID.AP is according to Neighboring Cell List, obtains Target RNC-ID and inserts Radio Link and set up and send to AG in the request message, and AG resolves this message and obtains Target RNC-ID, and this cell set up the request message from Radio Link delete.Then, AG selects corresponding Iur interface link to send a message to grand network RNC according to the Target RNC-ID that is resolved to.That is, AP equipment sends the Radio Link that carries the Target RNC sign to IAD and sets up request message, for described IAD recognition objective RNC.

Mode two, modification RUA agreement

Newly-increased cell utilizes this cell to carry RNC-ID in connection request (Connect Request) message of RUA agreement.AP obtains Target RNC-ID and inserts connection request message according to Neighboring Cell List.AG resolves this message and obtains Target RNC-ID, and preserves, and after RUA connected foundation, AP sent Radio Link and sets up request message to AG on this connects, and AG selects corresponding Iur interface link to send a message to grand network RNC according to the Target RNC-ID that has preserved.That is, AP equipment sends the connection request message based on the RUA agreement of carrying the Target RNC sign to IAD, for described IAD recognition objective RNC.

Mode three, modification HNBAP agreement

Newly-increased a pair of message in the HNBAP agreement, Target RNC-ID of the to be switched UE of notice AG.

AP judgement is initiated Iur when switching, earlier by HNBAP message, notice AG Target RNC-ID, wait to receive the AG response after, AP sends Radio Link again and sets up request message, AG selects corresponding Iur interface link to send a message to grand network RNC according to Target RNC-ID.That is, AP equipment sends the message based on HNBAP of carrying the Target RNC sign to IAD, for described IAD recognition objective RNC.

Step 3:AG sends Radio Link to target radio network subsystem (DRNS) and sets up request message.In embodiments of the present invention, the scene of setting up request message from the Radio Link of AG with the reception of the Target RNC in the target radio network subsystem is that example describes.That is, IAD is set up request message by above-mentioned Iur interface with above-mentioned Radio Link and is forwarded to Target RNC.

AG resolves and writes down the IP address and the udp port of the user's face in the request message of setting up from the Radio Link of AP.

When the Iur interface was based on ATM, AG set up above-mentioned IP address and udp port the request message after the deletion from Radio Link, this Radio Link is set up request message send to Target RNC by this Iur interface.

When the Iur interface is based on IP, AG sets up above-mentioned Radio Link after the user's face IP address of AP in the request message and the user's face IP address and udp port that udp port replaces with AG, this Radio Link is set up request message send to Target RNC by this Iur interface.Perhaps, when the Iur interface was based on IP, AG set up request message with the Radio Link of the user's face IP address of the above-mentioned AP of carrying and udp port and directly sends to Target RNC by this Iur interface.

Step 4: the Target RNC in the target radio network subsystem sends Radio Link to AG and sets up response (Radio Link Setup Response) message.

Concrete, when the Iur interface is based on ATM, then send after Radio Link sets up response message to AG at Target RNC, also comprise step 41: Target RNC sends to AG and sets up request (EstablishRequest) message, sets up atm link with AG; If this atm link is set up successfully, can also comprise that step 42:AG sends foundation to Target RNC and confirms (Establish Confirm) message.

When the Iur interface was based on IP, Target RNC was set up user's face IP address and the udp port that carries this Target RNC in the response message at this Radio Link.

Step 5:AG sends Radio Link to AP and sets up response message.

AG sets up the address information of carrying AG in the response message at the above-mentioned Radio Link that sends to AP, this address information can comprise user's face IP address and udp port, for example, AG sets up user's face IP address of carrying AG in the cell of transport layer address in the response message at Radio Link, inserts the udp port of this Radio Link correspondence in the binding logo cell.

Concrete, when the Iur interface is based on ATM, after AG receives that Radio Link that Target RNC returns is set up response message, if atm link is set up successfully, AG need set up AP, AG the IP/UDP pair corresponding relation with the AAL2 link, correctly to carry out the forwarding of user face data.

When the Iur interface is based on IP, after AG receives that Radio Link that Target RNC returns is set up response message, AG need resolve also the user's face IP address and the udp port of record macro network side Target RNC, and the right corresponding relation of the IP/UDP that sets up AP, AG, Target RNC, thereby guaranteed after switching is finished, can correctly carry out the forwarding of user face data.Perhaps, when the Iur interface was based on IP, user side data can be transmitted without AG, directly directly was sent to Target RNC from AP.

By above-mentioned steps, Radio Link is set up successfully.Radio Link carries out the synchronous process of uplink/downlink frames after setting up between AP and the Target RNS, this synchronous process comprises:

Step 6:AP sends down-going synchronous (Downlink Synchronization) message, is transmitted to Target RNC through AG.

That is, the AP down-going synchronous message that sends to AG is forwarded to Target RNC through the Iur interface.

Step 7: Target RNC sends uplink synchronous (Uplink Synchronization) message, is transmitted to AP through AG.

That is, the Target RNC of AP reception AG forwarding is sent to the uplink synchronous message of AG through the Iur interface.

Carrying out channel between step 8:UE and the AP reshuffles.

After uplink/downlink frames was finished synchronously, AP issued physical channel and reshuffles (Physical ChannelReconfiguration) message to UE, has carried the parameter that physical channel is reshuffled in this message, carried out to eat dishes without rice or wine to switch for UE and used; UE carries out and eats dishes without rice or wine to switch.

Step 9: behind the handover success, UE reshuffles by Target RNC transmission physical channel and finishes (PhysicalChannel Reconfiguration Complete) message to AP.That is, AP equipment receives reshuffling from the physical channel of UE afterwards at UE successful switch to grand network of described Target RNC forwarding and finishes message.

Arrive this, finish switching from UMTS AP system to the grand network of 3G.

Referring to Fig. 7, shown that UE switches to the switching flow schematic diagram of UMTS AP system from the grand network of 3G.As can be seen, compare to the flow process that the grand network of 3G switches with UMTS AP system shown in Figure 6, the switching flow that switches to UMTS AP system from the grand network of 3G mainly comprises following flow process:

1) UE sends measurement report to the source radio network subsystem.

In embodiments of the present invention, participating in UMTS AP system with the source RNC in the source radio network subsystem is that example describes to the flow process that the grand network of 3G switches.

2) source RNC initiates the switching of UE to UMTS AP system according to the measurement report judgement of the UE that receives.Source RNC sends Radio Link by the Iur interface to AG and sets up request message.That is, IAD reception sources RNC sets up request message by the Radio Link that the Iur interface sends.

Source RNC sets up at above-mentioned Radio Link and carries cell identity information in the request message, as the Cell-ID field, to indicate corresponding AP.

3) AG sets up request message with Radio Link and is forwarded to AP.

AG sets up request message with Radio Link and is forwarded to the pairing AP of this cell identity information according to above-mentioned cell identity information.

4) AP sends Radio Link to AG and sets up response message.

5) AG sets up response message by the Iur interface with Radio Link and is forwarded to source RNC.

When the Iur interface is based on ATM, then also comprise step 51: Target RNC sends to AG and sets up request message, sets up atm link with AG; If this atm link is set up successfully, comprise that also step 52:AG sets up acknowledge message to the Target RNC transmission.

By aforesaid operations, finish the foundation of Radio Link.

When the Iur interface was based on ATM, if atm link sets up successfully, AG need set up AP, AG the IP/UDP pair corresponding relation with the AAL2 link, correctly to carry out the forwarding of user face data.

When the Iur interface is based on IP, after AG receives that Radio Link that Target RNC returns is set up response message, AG need resolve also the user's face IP address and the udp port of record macro network side Target RNC, and the right corresponding relation of the IP/UDP that sets up AP, AG, Target RNC, thereby correctly carry out the forwarding of user face data.Perhaps, when the Iur interface was based on IP, user side data can be transmitted without AG, directly directly was sent to AP from source RNC.

By above-mentioned steps, Radio Link is set up successfully.Radio Link carries out the synchronous process of uplink/downlink frames after setting up between AP and the source RNS, this synchronous process comprises:

6) source RNC sends down-going synchronous message, is transmitted to AP through AG by the Iur interface.

7) AP sends uplink synchronous message, is transmitted to source RNC through AG by the Iur interface.

8) source RNC sends the physical link reconfiguration message to UE.

9) UE reshuffles to AP transmission physical link and finishes message.

10) AP returns physical link by above-mentioned Iur interface to source RNC via AG and reshuffles and finish message.

From the above mentioned, the Radio Link that the source RNC that IAD receives sends by the Iur interface is set up and is carried cell identity information in the request message, to indicate corresponding AP equipment; IAD is set up request message with described Radio Link and is forwarded to corresponding AP equipment according to cell identity information; And/or, grand network switches to the process of UMTS AP system from 3G above-mentioned, whether UMTS AP system can to allowing the access of UE to adjudicate, at this moment, source RNC sets up the authentication information of carrying UE in the request message at the Radio Link that sends to AG, this authentication information is the Proprietary Information of UE, as the international mobile subscriber identity (IMSI) of UE.Source RNC can carry the IMSI of UE in Radio Link is set up the permanent Non-Access Stratum user ID cell (Permanent NAS UE Identity IE) of request message, related network elements in the UMTS AP system (as AG or AP) can be adjudicated this UE according to the IMSI of the UE that receives and whether be belonged to authorization terminal, when this UE belongs to authorization terminal, allow this UE access network; When this UE does not belong to authorization terminal, refuse this UE access network.

The technical scheme that the embodiment of the invention provides, by between the base station control device in AP system and grand network direct-connected communication interface being set, carry out the switching of UE between AP system and grand network, solved in the prior art when the grand network of the 3G of operator is not supported switching based on the Iu interface, can't switch the problem of being brought between the grand network of UMTS AP system and 3G.The technical scheme that the embodiment of the invention provides can realize switching between grand network and the AP system by direct-connected communication interface between the base station control device in AP system and the grand network.

The internetwork changing method that the embodiment of the invention three provides, referring to Fig. 8, shown the scene of switching to grand network from the AP system, wherein, path shown in dotted lines in Figure 82 is the service path of UE before switching, connects the service path of the path 1 shown in the curve of core net, AG, AP, RNC and UE for UE after switching among Fig. 8.In embodiments of the present invention, the AP system switches to described grand network by direct-connected communication interface between the base station control device (as RNC) in AP system and the grand network with UE.Directly go out physical I ur interface to grand network RNC by AP, AP realizes Iur interface logic function, handles as SRNC, DRNC function and RNSAP protocol layer, no longer utilizes AG to carry out forwarding of data.Be that the AP system can switch to described grand network with described UE by direct-connected Iur interface between the base station control device (as RNC) in AP and the grand network.

In the embodiment of the invention three, the Iur interface of realizing on AP is based on the Iur interface of IP, and UE switches to source RNC or can adopt switching flow based on standard I ur from the flow process that source RNC switches to AP from AP.

When UE when source RNC switches to AP: source RNC sends Radio Link by the Iur interface to AP and sets up request message, and AP sends Radio Link by the Iur interface to source RNC and sets up response message; Then, adopt measured Iur switching flow to carry out follow-up hand-off process, for example, source RNC sends down-going synchronous message by the Iur interface to AP, the uplink synchronous message that AP sends to Target RNC by the Iur interface, and source RNC sends the wireless channel reconfiguration message to UE, UE reshuffles to AP transmission physical channel and finishes message, and AP reshuffles to source RNC transmission physical channel by described Iur interface and finishes message.

When UE when AP switches to Target RNC: AP sends Radio Link by the Iur interface to Target RNC and sets up request message; Target RNC sends Radio Link by the Iur interface to AP and sets up response message; Then, adopt measured Iur switching flow to carry out follow-up hand-off process, for example, AP sends down-going synchronous message by the Iur interface to Target RNC, the uplink synchronous message that AP receiving target RNC sends by the Iur interface, and AP sends the physical channel reconfiguration message to UE, UE reshuffles physical channel and finishes message and be sent to Target RNC, and Target RNC sends physical channel by described Iur interface and reshuffles and finish message to AP.

Can directly carry out the transmission of data between the technical scheme source RNC of the embodiment of the invention three and the AP, and the originating end that switches can directly be realized the selection of target network element by the Iur interface.The embodiment of the invention is by AP and the directly mutual flow process that realizes switching of RNC, and handover operation is simpler, has further shortened the time of switching, and has realized the quick switching between AP system and the grand network.

The internetwork changing method that the embodiment of the invention four provides, referring to Fig. 9, shown the scene of switching to grand network from the AP system, wherein, path shown in dotted lines in Figure 92 is the service path of UE before switching, connects the service path of the path 1 shown in the curve of core net, AG, AP, RNC and UE for UE after switching among Fig. 9.Under this network architecture, go out physical I ur interface by AG, AG realizes the logic function of the Iur interface of AP system, handles as service wireless network controller (SRNC), floating radio network controller (DRNC) function and RNSAP protocol layer.For grand network RNC, see that AG is equivalent to RNC.

Under this network architecture, the Iuh interface between AP and the AG need be supported migration and the Node B application protocol (NBAP) of SRNC, and AP needs the function of support node B (NodeB), and acceptance has the scheduling of the AG of RNC function.Be that the AP system can switch to described grand network with described UE by direct-connected Iur interface between the base station control device (as RNC) in AG and the grand network.

Under this network architecture, by go out the function that physical I ur interface is connected to grand network and is realized Iur interface respective protocol layer aspect by AG by AG, can reduce switching flow to the influence of AP access function, make AP can allow more UE access network, improve utilization rate of network resource.

Referring to Figure 10, below UE is described from the switching flow that UMTS AP system switches to the grand network of 3G, comprise the steps:

Step T1:UE sends measurement report to the objective network subsystem.

In embodiments of the present invention, participating in the switching flow that UMTS AP system switches to the grand network of 3G with the Target RNC in the objective network subsystem is that example describes.

Step T2:AP receives the measurement report from UE, and judgement needs the switching of initiation to the grand network of 3G, and AP sends migration request (eRelocation Required) message of evolution to AG.

AP can carry the complete contextual information of UE in the migration request message of above-mentioned evolution.AP also can carry the sign of Target RNC in the migration request message of above-mentioned evolution, to indicate to be switched Target RNC extremely.

Step T3:AG sends Radio Link by the Iur interface to Target RNC and sets up request message.

AG obtains the sign of above-mentioned Target RNC according to the migration request message that parsing receives, and Radio Link is set up the Target RNC that request message is sent to the sign correspondence of this Target RNC.

Step T4: Target RNC sends Radio Link by the Iur interface to AG and sets up response message.

From the angle of AG, promptly AG receiving target RNC sets up response message by the Radio Link that the Iur interface sends.

When the Iur interface is based on ATM, comprise also that then step T41:AG sets up request message to the Target RNC transmission, sets up atm link with AG; If this atm link is set up successfully, also comprise step T42: Target RNC sends to AG and sets up acknowledge message.

Step T5:AG sends down-going synchronous message by above-mentioned Iur interface to Target RNC.

Step T6: Target RNC sends uplink synchronous message to AG.

From the angle of AG, promptly AG receiving target RNC is by the uplink synchronous message of Iur interface transmission.

Step T7:AG sends migration order (eRelocation Command) message of evolution to AP.

After Radio Link was set up, AG sent the migration command messages to AP, finishes migration.

Step T8:AP issues radio bearer and reshuffles (Radio Bearer Reconfiguration) message to UE, and UE carries out and eats dishes without rice or wine to switch.

That is, AP sends radio bearer reconfiguration message to UE, carries out to eat dishes without rice or wine to switch for UE and uses the UE and then the switching of eating dishes without rice or wine.

Step T9: behind the handover success, UE reshuffles radio bearer and finishes (Radio BearerReconfiguration Complete) message and send to Target RNC, and Target RNC is reshuffled this radio bearer and finished message and be transmitted to AG by the Iur interface.

The radio bearer from UE that to be IAD receiving target RNC transmit by described Iur interface is reshuffled and is finished message.

Referring to Figure 11 A, below UE is described from the switching flow that the grand network of 3G switches to UMTS AP system, comprise the steps:

Step R1:UE sends measurement report to the source radio network subsystem.

Participating in UE with the source radio network controller in the source radio network subsystem in embodiments of the present invention is that example describes from the switching flow that the grand network of 3G switches to UMTS AP system.

Step R2: source RNC receives the measurement report from UE, and judgement needs the switching of initiation to UMTS AP system.Source RNC sends Radio Link by the Iur interface to AG and sets up request message.

Source RNC sets up the sign of carrying Target cell in the request message at above-mentioned Radio Link, to indicate to be switched AP extremely, as cell ID (C-ID) field is set to indicate the sign of above-mentioned Target cell in the Radio Link request message.

Step R3:AG sends Radio Link to AP and sets up request message.

AG resolves the Radio Link that receives and sets up request message, obtains the sign of above-mentioned Target cell, based on the NBAP agreement Radio Link is set up the AP that request message is sent to the sign correspondence of this Target cell.

Step R4:AP sends Radio Link based on the NBAP agreement to AG and sets up response message.

Step R5:AG sends Radio Link by the Iur interface to source RNC and sets up response message.

When the Iur interface is based on ATM, then also comprise step R51: source RNC sends to AG and sets up request message, sets up atm link with AG; If this atm link is set up successfully, comprise that also step R52:AG sets up acknowledge message to source RNC transmission.

Step R6: source RNC sends down-going synchronous message, is transmitted to AP through AG by above-mentioned Iur interface.

Step R7:AP sends uplink synchronous message, is transmitted to source RNC through AG by above-mentioned Iur interface.

Wherein, the data of the measured Iur-Iub of forwarding of user face data send.

Step R8: source RNC sends radio bearer reconfiguration message to UE, and UE carries out and eats dishes without rice or wine to switch.

Step R9: behind the handover success, UE transmission radio bearer is reshuffled and is finished message to AP.

Step R10:AP reshuffles this radio bearer and finishes message and be transmitted to source RNC through AG by above-mentioned Iur interface.

Referring to Figure 11 B, below UE is described from the another kind of switching flow that the grand network of 3G switches to UMTS AP system, this flow process only is used for UE and switches to the grand network of 3G by the Iur interface from the AP system earlier, and then switches back the situation of AP in this AG, comprises the steps:

Step S1:UE sends measurement report to AG.

Step S2:AG receives the measurement report from UE, and judgement needs the switching of initiation to UMTS AP system.AG initiates the migration flow process to the migration request message that AP sends evolution.

Step S3:AP sends the migration response message of evolution to AG.

Step S4:AG sends radio bearer reconfiguration message by the Iur interface to source RNC, and source RNC is transmitted to UE with this radio bearer reconfiguration message, initiates to reshuffle flow process.

Step S5:UE reshuffles to AP transmission radio bearer and finishes message, finishes and reshuffles.

Step S6:AP finishes (eRelocation Complete) message to the migration that AG sends evolution.

Step S7:AG sends Radio Link removal request (RLDelete Request) message by the Iur interface to the source radio network subsystem.

Participating in UE with the source RNC in the source radio network subsystem in embodiments of the present invention is that example describes from the switching flow that the grand network of 3G switches to UMTS AP system.

Step S8: source RNC sends Radio Link deletion response (RL DeleteResponse) message by the Iur interface to AG.

Be understandable that, above-mentionedly just UE is switched to the method for the grand network of 3G and UE switches to the method for UMTS AP system from the grand network of 3G exemplary description from UMTS AP system, be not limited thereto, for example, when UE can adopt changing method shown in Figure 9 when UMTS AP system switches to the grand network of 3G, and when switching to UMTS AP system, the grand network of 3G can adopt changing method shown in Figure 4 as UE.

Be appreciated that some step among the invention described above method embodiment can adjust execution sequential to each other as required, also can omit some step as required.

On the one hand, the embodiment of the invention five provides a kind of communication system, and as shown in figure 12, this communication system comprises the access point AP system that communicates with grand network, and this AP system comprises AP equipment 121 and IAD 122; Above-mentioned AP system is used for: receive the measurement report that AP equipment 121 covers reported by user equipment UE down, judgement UE need initiate the switching from the AP system to grand network; And, by direct-connected communication interface between the base station control device in AP system and the grand network, UE is switched to grand network.

Can adopt multiple mode in the AP system, to realize above-mentioned communication interface, this Realization of Communication Interface mode difference, network element that switches between the grand network of participation in the AP system and the interaction flow between each network element are also different.

Base station control device in the above-mentioned grand network is RNC, and above-mentioned communication interface can be the Iur interface between IAD in the AP system 122 and the RNC.Under this scene, go out physical I ur interface by AG, promptly go up the Iur interface that is provided with by AG and be connected to grand network, the Iur interface of realization AP system converges the function with forwards, and necessary RNSAP protocol layer is handled.Realize Iur interface logic function by AP, as SRNC, DRNC function and RNSAP protocol layer processing capacity etc.This Iur interface can IP-based Iur interface or based on the Iur interface of ATM.

Under this scene, referring to Figure 12, above-mentioned AP equipment 121 comprises the first module 1211 and second unit 1212, and above-mentioned IAD 122 comprises the 3rd unit 1221 and the 4th unit 1222, wherein,

Above-mentioned first module 1211 is used for sending Radio Link to IAD 122 and sets up request message;

Above-mentioned second unit 1212, the Radio Link that is used to receive the 4th unit forwards of IAD 122 is set up response message;

Above-mentioned the 3rd unit 1221 is used for by the Iur interface Radio Link of the first module transmission of AP equipment 121 being set up request message and is forwarded to Target RNC;

Above-mentioned the 4th unit 1222 is used for receiving target RNC and sets up response message by the Radio Link that above-mentioned Iur interface sends, and above-mentioned Radio Link is set up response message is forwarded to AP equipment 121.

Further, above-mentioned first module 1221 also is used for sending down-going synchronous message to IAD 122;

Above-mentioned Unit second also is used to receive the uplink synchronous message of the 4th unit forwards of above-mentioned IAD 122;

Above-mentioned Unit the 3rd, the down-going synchronous forwards that also is used for by above-mentioned Iur interface the first module of above-mentioned AP equipment 121 being sent is to Target RNC;

Above-mentioned Unit the 4th also is used to receive the uplink synchronous message that above-mentioned Target RNC sends by above-mentioned Iur interface, and with above-mentioned uplink synchronous forwards to AP equipment 121; And,

Above-mentioned first module also is used to send the physical channel reconfiguration message to UE, carries out to eat dishes without rice or wine to switch for UE and uses;

Above-mentioned Unit second, the physical channel that also is used to receive the 4th unit forwards of IAD 122 is reshuffled and is finished message;

Above-mentioned Unit the 4th also is used for the physical channel from UE that receiving target RNC transmits by described Iur interface and reshuffles and finish message, and above-mentioned physical channel is reshuffled finish forwards to AP equipment 121.

Further, the first module 1211 of above-mentioned AP equipment 121 also is used for sending the message of carrying the Target RNC sign to IAD 122, and for above-mentioned IAD 122 recognition objective RNC, above-mentioned message comprises:

Carry the above-mentioned Radio Link of Target RNC sign and set up request message; That perhaps, carries Target RNC sign uses the connection request message of RUA agreement based on the long-distance user; Perhaps, carry the message based on Home eNodeB applying portion agreement HNBAP of Target RNC sign.

Above-mentioned just to the exemplary description of AP equipment and IAD, be not limited thereto, for example, above-mentioned AP equipment can also comprise switching initiates the unit, be used to receive the measurement report that the UE under this AP equipment covering reports, judge that UE need initiate the switching from the AP system to grand network, perhaps, above-mentioned AP equipment can directly utilize second unit 1212 to receive the measurement report that the UE under this AP equipment covering reports, and judges that UE need initiate the switching from the AP system to grand network.

Under this scene, AG mainly plays forwarding in handoff procedure, realizes above-mentioned Iur interface in the logic function aspect the protocol layer by AP, and the compatible preferably existing network architecture has made full use of existing Internet resources, is with a wide range of applications.

On the other hand, the embodiment of the invention six also provides a kind of communication system, and as shown in figure 13, this communication system comprises the access point AP system that communicates with grand network, and this AP system comprises AP equipment 131 and IAD 132; Above-mentioned AP system is used for: receive the measurement report that AP equipment 131 covers reported by user equipment UE down, judgement UE need initiate the switching from the AP system to grand network; And, by direct-connected communication interface between the base station control device in AP system and the grand network, UE is switched to grand network.

Base station control device in the above-mentioned grand network is RNC, and above-mentioned communication interface can be AP equipment 131 in the AP system and the Iur interface between the RNC.Under this scene, directly go out physical I ur interface to grand network RNC by AP, AP realizes Iur interface logic function, handles as SRNC, DRNC function and RNSAP protocol layer, directly carries out the transmission of data between AP and the RNC.UE switches to flow process that source RNC or UE switch to AP from source RNC from AP can adopt switching flow based on standard I ur.

Under this scene, referring to Figure 13, above-mentioned AP equipment 131 comprises the 5th unit 1311 and the 6th unit 1312.

Wherein, above-mentioned the 5th unit 1311 is used for sending Radio Link by above-mentioned Iur interface to Target RNC and sets up request message; Above-mentioned the 6th unit 1312 is used for receiving target RNC and sets up response message by the Radio Link that above-mentioned Iur interface sends; Then, adopt measured Iur switching flow to carry out follow-up hand-off process, for example, AP sends down-going synchronous message by the Iur interface to Target RNC, the uplink synchronous message that AP receiving target RNC sends by the Iur interface, and AP sends the physical channel reconfiguration message to UE, UE reshuffles physical channel and finishes message and be sent to Target RNC, and Target RNC sends physical channel by the Iur interface and reshuffles and finish message to AP.

Above-mentioned just to the exemplary description of AP equipment, be not limited thereto, for example, above-mentioned AP equipment can also comprise switching initiates the unit, be used to receive the measurement report that the UE of this AP equipment under covering reports, judge that described UE need initiate the switching from described AP system to grand network, perhaps, above-mentioned AP equipment can directly utilize the 6th unit 1312 to receive the measurement report that the UE of these AP equipment under covering reports, and judges that described UE need initiate the switching from described AP system to grand network.

Under this scene, by AP and the directly mutual flow process that realizes switching of RNC, handover operation is simpler, has further shortened the time of switching, and has realized the quick switching between AP system and the grand network.

On the one hand, the embodiment of the invention seven also provides a kind of communication system again, and as shown in figure 14, this communication system comprises the access point AP system that communicates with grand network, and this AP system comprises AP equipment 141 and IAD 142; Above-mentioned AP system is used for: receive the measurement report that AP equipment 141 covers reported by user equipment UE down, judgement UE need initiate the switching from the AP system to grand network; And, by direct-connected communication interface between the base station control device in AP system and the grand network, UE is switched to grand network.

Base station control device in the above-mentioned grand network is a radio network controller (RNC), and above-mentioned communication interface can be the Iur interface between IAD in the AP system 142 and the RNC.Under this scene, go out physical I ur interface by AG, AG realizes the logic function of the Iur interface of AP system, handles as SRNC, DRNC function and RNSAP protocol layer.For grand network RNC, see that AG is equivalent to RNC.Iuh interface between AP and the AG need be supported migration and the Node B application protocol (NBAP) of SRNC, and AP needs the function of support node B, and acceptance has the scheduling of the AG of RNC function.

Under this scene, referring to Figure 14, above-mentioned AP equipment 141 comprises the 7th unit 1411 and the 8th unit 1412, and above-mentioned IAD 142 comprises the 9th unit 1421 and the tenth unit 1422, wherein,

Above-mentioned the 7th unit 1411 is used for the migration request message to IAD 142 transmission evolution, initiates the migration flow process; Above-mentioned the 8th unit 1412 is used to receive the Radio Link of transmitting the tenth unit 1422 of above-mentioned IAD 142 and sets up response message;

Above-mentioned the 9th unit 1421 is used for sending Radio Link by above-mentioned Iur interface to Target RNC and sets up request message; Above-mentioned the tenth unit 1422 is used for receiving target RNC and sets up response message by the Radio Link that the Iur interface sends, and above-mentioned Radio Link is set up response message is forwarded to AP equipment 141; And,

Above-mentioned the 7th unit 1411 also is used for sending radio bearer reconfiguration message to UE, carries out to eat dishes without rice or wine to switch for UE and uses; Above-mentioned the 8th unit 1412 also is used to receive the migration command messages that the 9th unit 1421 of above-mentioned IAD 142 sends;

Above-mentioned the 9th unit 1421 also is used for sending down-going synchronous message by the Iur interface to Target RNC; And, send the migration command messages to AP equipment 141, finish migration; Above-mentioned the tenth unit 1422 also is used for the uplink synchronous message that receiving target RNC sends by the Iur interface; And the radio bearer from UE that receiving target RNC transmits by above-mentioned Iur interface is reshuffled and is finished message.

Above-mentioned just to the exemplary description of AP equipment, be not limited thereto, for example, above-mentioned AP equipment can also comprise switching initiates the unit, be used to receive the measurement report that the UE of this AP equipment under covering reports, judge that described UE need initiate the switching from described AP system to grand network, perhaps, above-mentioned AP equipment can directly utilize the 8th unit 1412 to receive the measurement report that the UE of these AP equipment under covering reports, and judges that described UE need initiate the switching from described AP system to grand network.

Under this scene, by go out the function that physical I ur interface is connected to grand network and is realized Iur interface respective protocol layer aspect by AG by AG, reduce switching flow to the influence of AP access function, made AP can allow more UE access network, improved utilization rate of network resource.

In the system embodiment of the present invention among above-mentioned AG and the AP the concrete working method of each functional module and unit referring to the inventive method embodiment.Realization separately can be distinguished in each functional module and unit in the system embodiment of the present invention, also can be integrated in one or more unit and realize.In addition, can also comprise among AG and the AP that realization switches to the functional module of AP system from grand network.

From the above mentioned, the technical scheme that system embodiment of the present invention provides, by between the base station control device in AP system and grand network direct-connected communication interface being set, carry out the switching of UE between AP system and grand network, solved in the prior art when the grand network of the 3G of operator is not supported switching based on the Iu interface, can't switch the problem of being brought between the grand network of UMTS AP system and 3G.The technical scheme that the embodiment of the invention provides can realize switching between grand network and the AP system by direct-connected communication interface between the base station control device in AP system and the grand network.

The embodiment of the invention eight provides a kind of IAD and access network element, in the present embodiment, go out physical I ur interface, promptly go up the Iur interface that is provided with and be connected to grand network by AG by AG, the Iur interface of realization AP system converges the function with forwards, and necessary RNSAP protocol layer is handled.Realize Iur interface logic function by AP, as SRNC, DRNC function and RNSAP protocol layer processing capacity etc.This Iur interface can IP-based Iur interface or based on the Iur interface of ATM.

Above-mentioned IAD comprises: retransmission unit, be used for being forwarded to Target RNC by the Iur interface with setting up request message from the Radio Link of AP equipment, and will set up response message from the Radio Link of Target RNC and be forwarded to AP equipment; Perhaps, will set up request message from the Radio Link of source RNC and be forwarded to AP equipment, will set up response message from the Radio Link of AP equipment and be forwarded to source RNC by the Iur interface.

Above-mentioned access network element comprises: switch and initiate the unit, be used for determining to initiate the switching of UE to grand network according to the measurement report of the UE that receives; Transmitting element is used for sending Radio Link to AG and sets up request message; Receiving element, the Radio Link that is used to receive from AG is set up response message.This access network element can be realized by AP.

Further, above-mentioned receiving element, the Radio Link that also is used to receive from AG is set up request message; Above-mentioned transmitting element also is used for sending Radio Link to AG and sets up response message.

The concrete working method of each functional module and unit is referring to the inventive method embodiment in the system embodiment of the present invention.Realization separately can be distinguished in each functional module and unit in the system embodiment of the present invention, also can be integrated in one or more unit and realize.

The embodiment of the invention nine also provides a kind of access network element, in the present embodiment, directly go out physical I ur interface to grand network RNC by AP, AP realizes Iur interface logic function, handle as SRNC, DRNC function and RNSAP protocol layer, directly carry out the transmission of data between AP and the RNC.UE switches to flow process that source RNC or UE switch to AP from source RNC from AP can adopt switching flow based on standard I ur.

Above-mentioned access network element comprises:

Receiving element is used for setting up request message by the reception of Iur interface from the Radio Link of source RNC; Perhaps, set up response message by the reception of Iur interface from the Radio Link of Target RNC;

Transmitting element is used for sending Radio Link by the Iur interface to source RNC and sets up response message; Perhaps, send Radio Link by the Iur interface to Target RNC and set up request message.

Further, above-mentioned access network element also comprises: switch and initiate the unit, be used for determining to initiate the switching of UE to grand network according to the measurement report of the UE that receives, this Target RNC is positioned at this grand network;

Above-mentioned transmitting element is used for initiating the unit when determining to initiate UE to the switching of grand network when above-mentioned switching, sends Radio Link by the Iur interface to Target RNC and sets up request message.

Above-mentioned access network element can be realized by AP.

From the above mentioned, the technical scheme that the embodiment of the invention provides, by between the base station control device in AP system and grand network direct-connected communication interface being set, carry out the switching of UE between AP system and grand network, solved in the prior art when the grand network of the 3G of operator is not supported switching based on the Iu interface, can't switch the problem of being brought between the grand network of UMTS AP system and 3G.The technical scheme that the embodiment of the invention provides can realize switching between grand network and the AP system by direct-connected communication interface between the base station control device in AP system and the grand network.

The embodiment of the invention ten also provides a kind of access network element and IAD, in the present embodiment, goes out physical I ur interface by AG, and AG realizes the logic function of the Iur interface of AP system, handles as SRNC, DRNC function and RNSAP protocol layer.For grand network RNC, see that AG is equivalent to RNC.Iuh interface between AP and the AG need be supported migration and the Node B application protocol of SRNC, and AP needs the function of support node B, and acceptance has the scheduling of the AG of RNC function.

Above-mentioned access network element comprises:

Migration units is used for sending migration request message to AG, initiates the migration flow process, and after Radio Link is set up, receives the migration command messages from the evolution of AG, finishes migration.

Further, above-mentioned access network element also comprises:

Receiving element is used to receive AG and sets up request message based on the Radio Link that the Node B application protocol sends; Transmitting element is used for sending Radio Link based on the Node B application protocol to AG and sets up response message.

Further, above-mentioned migration units also is used to receive the migration request message that AG sends evolution, sends the migration response message of evolution to AG, radio bearer reshuffle finish after, message is finished in the migration that sends evolution to AG, finishes migration.

Above-mentioned IAD comprises: transmitting element is used for sending Radio Link by the Iur interface to Target RNC and sets up request message; Receiving element is used for setting up response message by the reception of Iur interface from the Radio Link of Target RNC.

Further, above-mentioned receiving element also is used for reception sources RNC and sets up request message by Iur interface transmission Radio Link; Above-mentioned transmitting element also is used for sending Radio Link by the Iur interface to source RNC and sets up response message.

Further, above-mentioned transmitting element also is used for the migration request message to AP equipment transmission evolution; Above-mentioned receiving element also is used to receive the migration response message of the evolution that AP equipment sends.

The concrete working method of each functional module and unit can be appreciated that above-mentioned each functional module and unit referring to the inventive method embodiment in the embodiment of the invention, can realize separately, also can be integrated in one or more unit and realize.

Those skilled in the art can be well understood to the present invention and can realize by the mode that software adds essential general hardware platform.Based on such understanding, the part that technical scheme of the present invention contributes to prior art in essence in other words can software product form embody, this computer software product can be stored in the storage medium, as ROM/RAM, magnetic disc, CD etc., comprise that some instructions are with so that a computer equipment (can be a personal computer, server, the perhaps network equipment etc.) carry out the method that some part of each embodiment of the present invention or embodiment is described.

The above; only be the specific embodiment of the present invention, but protection scope of the present invention is not limited thereto, anyly is familiar with those skilled in the art in the technical scope that the present invention discloses; can expect easily changing or replacing, all should be encompassed within protection scope of the present invention.Therefore, protection scope of the present invention should be as the criterion with the protection range of claim.

Claims

1. an internetwork changing method is characterized in that, comprising:

Access point AP system receives the measurement report of AP equipment in the described AP system reported by user equipment UE under covering, and judges that described UE need initiate the switching from described AP system to grand network;

Described AP system switches to described grand network by direct-connected communication interface between the base station control device in described AP system and the grand network with described UE.

2. method according to claim 1 is characterized in that, the base station control device in the described grand network is a radio network controller (RNC), and described communication interface is IAD in the AP system and the Iur interface between the RNC,

Described AP system switches to described grand network by direct-connected communication interface between the base station control device in described AP system and the grand network with described UE, comprising:

AP equipment sends Radio Link to IAD and sets up request message;

IAD is set up request message by described Iur interface with described Radio Link and is forwarded to Target RNC;

IAD receiving target RNC sets up response message by the Radio Link that described Iur interface sends;

IAD is set up response message with described Radio Link and is forwarded to AP equipment.

3. method according to claim 2 is characterized in that, described Radio Link is set up after response message is forwarded to AP equipment at described IAD, and described method also comprises:

The down-going synchronous message that described AP equipment sends to described IAD is forwarded to Target RNC through described Iur interface;

The Target RNC that described AP equipment reception IAD is transmitted is sent to the uplink synchronous message of this IAD through described Iur interface;

Described AP equipment sends the physical channel reconfiguration message to described UE, carries out to eat dishes without rice or wine to switch for described UE and uses;

Described AP equipment receives reshuffling from the physical channel of UE afterwards at UE successful switch to described grand network of described Target RNC forwarding and finishes message.

4. according to claim 2 or 3 described methods, it is characterized in that described method also comprises:

Described AP equipment sends the message of carrying the Target RNC sign to described IAD, and for described IAD recognition objective RNC, described message comprises:

Carry the described Radio Link of Target RNC sign and set up request message; Perhaps,

That carries Target RNC sign uses the connection request message of RUA agreement based on the long-distance user; Perhaps,

Carry the message based on Home eNodeB applying portion agreement HNBAP of Target RNC sign.

5. according to claim 2 or 3 described methods, it is characterized in that AP equipment is set up the address information of carrying AP equipment in the request message at the Radio Link that sends to IAD, described address information comprises user's face IP address and User Datagram Protoco (UDP) udp port,

After IAD transmission Radio Link was set up request message, described method also comprised at described AP equipment:

When described Iur interface during based on asynchronous transfer mode ATM, IAD is deleted the address information that described Radio Link is set up the AP equipment that carries in the request message, by described Iur interface this Radio Link is set up request message and be forwarded to Target RNC, and after setting up response message by the Radio Link that Iur interface receiving target RNC sends, set up atm link between IAD and the Target RNC;

After described atm link was set up successfully, IAD was set up response message to the described Radio Link of AP device forwards, and this Radio Link is set up the address information of carrying IAD in the response message; Perhaps,

When described Iur interface during based on Internet Protocol IP, after the address information that IAD is set up the AP equipment that carries in the request message with described Radio Link replaces with the address information of this IAD, by the Iur interface this Radio Link is set up request message and be forwarded to Target RNC, perhaps, the IAD described Radio Link request message that will receive directly is sent to Target RNC by the Iur interface;

IAD is set up the address information of carrying Target RNC in the response message by the Radio Link that the Iur interface receives, and IAD is resolved described Radio Link and set up response message, obtains the address information and the preservation of Target RNC; IAD is set up response message to the described Radio Link of AP device forwards, and this Radio Link is set up the address information of carrying IAD in the response message.

6. internetwork changing method according to claim 1 is characterized in that,

Base station control device in the described grand network is RNC, described communication interface is AP equipment in the AP system and the Iur interface between the RNC, described AP system is by direct-connected communication interface between the base station control device in described AP system and the grand network, described UE is switched to described grand network, comprising:

AP equipment sends Radio Link by the Iur interface to Target RNC and sets up request message;

AP equipment receiving target RNC sets up response message by the Radio Link that the Iur interface sends;

Perhaps,

Base station control device in the described grand network is RNC, described communication interface is IAD in the AP system and the Iur interface between the RNC, described AP system is by direct-connected communication interface between the base station control device in described AP system and the grand network, described UE is switched to described grand network, comprising:

AP equipment is initiated the migration flow process to the migration request message of IAD transmission evolution;

IAD sends Radio Link by the Iur interface to Target RNC and sets up request message;

IAD receiving target RNC sets up response message by the Radio Link that the Iur interface sends;

IAD sends down-going synchronous message by the Iur interface to Target RNC;

The uplink synchronous message that IAD receiving target RNC sends by the Iur interface;

IAD sends the migration command messages to AP equipment, finishes migration;

AP equipment sends radio bearer reconfiguration message to UE, carries out to eat dishes without rice or wine to switch for UE and uses;

The radio bearer from UE that IAD receiving target RNC transmits by described Iur interface is reshuffled and is finished message.

7. internetwork changing method according to claim 1 is characterized in that, described method also comprises:

Grand network receives the measurement report that the UE in the described grand network reports, and judges that described UE need initiate the switching from described grand network to the AP system;

Described grand network is by direct-connected communication interface between described base station control device and the AP system, and described UE is switched to described AP system.

8. internetwork changing method according to claim 7, it is characterized in that, base station control device in the described grand network is RNC, described communication interface is IAD in the AP system and the Iur interface between the RNC, described grand network is by direct-connected communication interface between described base station control device and the AP system, described UE is switched to described AP system, comprising:

IAD reception sources RNC sets up request message by the Radio Link that the Iur interface sends;

IAD is set up request message with described Radio Link and is forwarded to AP equipment;

AP equipment sends Radio Link to IAD and sets up response message;

IAD is set up response message by the Iur interface with described Radio Link and is forwarded to source RNC.

9. internetwork changing method according to claim 8 is characterized in that, described method also comprises:

The described Radio Link that the source RNC that IAD receives sends by described Iur interface is set up and is carried cell identity information in the request message, to indicate corresponding AP equipment; IAD is set up request message with described Radio Link and is forwarded to corresponding AP equipment according to described cell identity information; And/or,

The source RNC that IAD receives sets up the authentication information of carrying UE in the request message by the described Radio Link that described Iur interface sends; IAD or AP equipment determine to allow described UE to insert according to described authentication information.

10. a communication system is characterized in that, described communication system comprises the access point AP system that communicates with grand network, and described AP system comprises AP equipment and IAD;

Described AP system is used for:

Receive the measurement report of the reported by user equipment UE of AP equipment under covering, judge that described UE need initiate the switching from described AP system to grand network; And

By direct-connected communication interface between the base station control device in described AP system and the grand network, described UE is switched to described grand network.

11. communication system according to claim 10 is characterized in that, the base station control device in the described grand network is a radio network controller (RNC), and described communication interface is IAD in the AP system and the Iur interface between the RNC,

Described AP equipment comprises first module and Unit second, and described IAD comprises Unit the 3rd and Unit the 4th, wherein,

Described first module is used for sending Radio Link to IAD and sets up request message;

Described Unit second, the Radio Link that is used to receive the 4th unit forwards of IAD is set up response message;

Described Unit the 3rd is used for by described Iur interface the Radio Link of the first module transmission of described AP equipment being set up request message and is forwarded to Target RNC;

Described Unit the 4th is used to receive described Target RNC and sets up response message by the Radio Link that described Iur interface sends, and described Radio Link is set up response message is forwarded to AP equipment.

12. according to claim 10 or 11 described communication systems, it is characterized in that,

Described first module also is used for sending down-going synchronous message to IAD;

Described Unit second also is used to receive the uplink synchronous message of the 4th unit forwards of described IAD;

Described Unit the 3rd, the down-going synchronous forwards that also is used for by described Iur interface the first module of described AP equipment being sent is to Target RNC;

Described Unit the 4th also is used to receive the uplink synchronous message that described Target RNC sends by described Iur interface, and with described uplink synchronous forwards to AP equipment; And,

Described first module also is used to send the physical channel reconfiguration message to UE, carries out to eat dishes without rice or wine to switch for described UE and uses;

Described Unit second, the physical channel that also is used to receive the 4th unit forwards of described IAD is reshuffled and is finished message;

Described Unit the 4th also is used to receive the physical channel from UE that described Target RNC transmits by described Iur interface and reshuffles and finish message, and described physical channel is reshuffled finish forwards to AP equipment.

13. communication system according to claim 12 is characterized in that, the first module of described AP equipment also is used for sending the message of carrying the Target RNC sign to IAD, and for described IAD recognition objective RNC, described message comprises:

14. communication system according to claim 10 is characterized in that,

Base station control device in the described grand network is a radio network controller (RNC), and described communication interface is AP equipment in the AP system and the Iur interface between the RNC, and described AP equipment comprises Unit the 5th and Unit the 6th, wherein,

Described Unit the 5th is used for sending Radio Link by described Iur interface to Target RNC and sets up request message; Described Unit the 6th is used for receiving target RNC and sets up response message by the Radio Link that described Iur interface sends;

Perhaps,

Base station control device in the described grand network is a radio network controller (RNC), described communication interface is IAD in the AP system and the Iur interface between the RNC, and described AP equipment comprises Unit the 7th and Unit the 8th, and described IAD comprises Unit the 9th and Unit the tenth, wherein

Described Unit the 7th is used for the migration request message to IAD transmission evolution, initiates the migration flow process;

Described Unit the 8th, the Radio Link that is used to receive the tenth unit forwards of described IAD is set up response message;

Described Unit the 9th is used for sending Radio Link by described Iur interface to Target RNC and sets up request message;

Described Unit the tenth is used for receiving target RNC and sets up response message by the Radio Link that the Iur interface sends, and described Radio Link is set up response message is forwarded to AP equipment; And,

Described Unit the 7th also is used for sending radio bearer reconfiguration message to UE, carries out to eat dishes without rice or wine to switch for UE and uses;

Described Unit the 8th also is used to receive the migration command messages that Unit the 9th of described IAD sends;

Described Unit the 9th also is used for sending down-going synchronous message by the Iur interface to Target RNC; And, send the migration command messages to AP equipment, finish migration;

Described Unit the tenth also is used for the uplink synchronous message that receiving target RNC sends by the Iur interface; And the radio bearer from UE that receiving target RNC transmits by described Iur interface is reshuffled and is finished message.