CN101686518A

CN101686518A - Cross-network switching method and system and access network device

Info

Publication number: CN101686518A
Application number: CN200810223069A
Authority: CN
Inventors: 钟鑫; 扈曙辉; 赵洁; 刘清顺
Original assignee: Huawei Technologies Co Ltd
Current assignee: Huawei Technologies Co Ltd
Priority date: 2008-09-26
Filing date: 2008-09-26
Publication date: 2010-03-31
Also published as: WO2010037313A1

Abstract

The embodiment of the invention relates to a cross-network switching method and a system and an access network device. The cross-network switching method comprises the following steps: obtaining switched target access network device information on the basis of terminal switching information which is received from an endpoint access network device and is transmitted by a device at the source network side; sending the switched information to the target access network device when the target access network device is different from the endpoint access network device; and transmitting radio resourceinformation which is distributed to the terminal by the target access network device according to the switched information to the terminal through the device at the source network side. The embodiment of the invention solves the problem of terminal cross-network switching from the source network to the target network when the endpoint access network device receiving the terminal switched information transmitted by the device at the source network side is different from the target access network device containing a target sector which the terminal actually needs to be switched. Besides, the embodiment of the invention improves the success ratio of terminal cross-network switching.

Description

Inter-network changing method and system and access network equipment

Technical field

The embodiment of the invention relates to wireless communication technology, particularly relates to a kind of inter-network changing method and system and access network equipment.

Background technology

Network interworking problem between the network that various criterionization is organized to set up, for example: the network interworking problem between the network of the network that 3GPP standardization body formulates and the formulation of non-3GPP standardization body, it is the much-talked-about topic that current standardization body is discussed, that wherein receive much concern is 3GPP evolvement network wireless access network Long Term Evolution (Long Term Evolution, hereinafter to be referred as LTE) network interworking between the High Rate Packet Data (Evolved High Rate Packet Data is hereinafter to be referred as eHRPD) of evolution among project and the 3GPP2.

Be supported on the multimode terminal function and carry out the inter-network switching between a plurality of networks.Suppose to support that the dual-mode terminal of LTE/eHRPD network is the dual-mode terminal of single-emission and double-receiving.When the dual-mode terminal of single-emission and double-receiving on a network during transceive data, it can not carry out the work of registration, authentication or session negotiation simultaneously on another network, make when terminal is carried out the inter-network switching, must carry out work such as endpoint registration, authentication or session negotiation earlier.These processes need several seconds usually, cause transfer of data to interrupt, and have greatly influenced the quality of service of real time business (as: VoIP speech business etc.) in the inter-network handoff procedure.In order to reduce the time-delay of real time business in the inter-network handoff procedure, can when still also being positioned at the source network side, terminal, carry out " pre-registration " of terminal at objective network by the interface of source network resource and source network and objective network; Promptly when terminal still is positioned at the source network side, on one side transceive data, work such as registration, authentication or session negotiation carried out on one side by the interface between source network and source network and the objective network.

Terminal comprises " pre-registration " process and hand-off execution process from the handoff procedure that the LTE network switches to the eHRPD network.Terminal is at first carried out " pre-registration " of eHRPD network at the LTE network.When " pre-registration " when process is finished, the sector mark information (SectorID) of on each LTE network base station (Evolved Node B is hereinafter to be referred as eNB) in pre-registration zone, all being furnished with an eHRPD network; This sector mark information is that static configuration is on eNB.When terminal is switched the execution flow process, promptly when terminal is really initiated handover operation from the LTE network to the eHRPD network, the terminal that is positioned at the LTE network side sends to handover information and the sector mark information corresponding objective network side group station (hereinafter referred to as end points access network equipment) of static configuration at eNB, is terminal distribution eHRPD wireless resource information by the end points access network equipment.

The inventor finds in realizing embodiment of the invention process, if eHRPD end points access network equipment is not a target access network equipment, the handoff failure of terminal from source network (LTE) to objective network (eHRPD), therefore, prior art terminal inter-network handover success rate is lower.

Summary of the invention

The embodiment of the invention provides a kind of inter-network changing method and system and access network equipment, is used to improve terminal inter-network success rate for switching.

The embodiment of the invention provides a kind of inter-network changing method, comprising:

Terminal switching information according to the source network side apparatus of end points access network equipment reception is transmitted obtains the target access network equipment information of switching;

When described target access network equipment and end points access network equipment not simultaneously, send described handover information to described target access network equipment;

Is the wireless resource information of described terminal distribution with described target access network equipment according to described handover information, is transmitted to described terminal by described source network side apparatus.

In the inter-network changing method that the embodiment of the invention provides, the end points access network equipment of the terminal switching information of transmitting when the reception sources network equipment, with terminal actual to switch under the target sector target access network equipment not simultaneously, the handover information that the end points access network equipment is received sends to target access network equipment, by target access network equipment is the Radio Resource of terminal distribution objective network, and be transmitted to terminal by the source network side apparatus, thereby solved the end points access network equipment of the terminal switching information of transmitting when the reception sources network equipment, with target access network equipment under the actual target sector that will switch to of terminal not simultaneously, the inter-network switching problem of terminal from the source network to the objective network improved terminal inter-network success rate for switching.

The embodiment of the invention also provides a kind of access network equipment, comprising:

Parsing module is used for the terminal switching information according to the source network side apparatus forwarding that receives, and obtains the target access network equipment information of switching;

Judge module is used for according to described target access network equipment information, judges whether described target access network equipment is this access network equipment;

Communication module is used for working as described target access network equipment and this access network equipment not simultaneously, sends described handover information to described target access network equipment; And to receive described target access network equipment be the wireless resource information of described terminal distribution according to described handover information, and transmit described wireless resource information by the source network side apparatus to described terminal.

In a kind of access network equipment that the embodiment of the invention provides, when judge module when to judge access network equipment self be not target access network equipment under the terminal target sector that will switch to, the terminal switching information of the source network side apparatus being transmitted by communication module sends to target access network equipment, and be that the terminal distribution wireless resource information sends to terminal by the source network side apparatus with target access network equipment, thereby solved the access network equipment of the terminal switching information of transmitting when the reception sources network equipment, when different with the target access network equipment under the actual target sector that will switch to of terminal (being that this access network equipment is different with target access network equipment), the inter-network switching problem of terminal from the source network to the objective network improved terminal inter-network success rate for switching.

The embodiment of the invention also provides another kind of access network equipment, comprising:

Receiver module is used to receive the terminal switching information that source network side apparatus that the end points access network equipment sends is transmitted;

The allocation of radio resources module, being used for according to described handover information is described terminal distribution Radio Resource;

Sending module is used for described wireless resource information is sent to described source network side apparatus, triggers described source network side apparatus and transmits described wireless resource information to described terminal; Perhaps, described wireless resource information is sent to described end points access network equipment, trigger described end points access network equipment and described wireless resource information is transmitted to described terminal by described source Access Network.

In the another kind of access network equipment that the embodiment of the invention provides, when receiver module receives the handover information of the source network lateral terminal that the end points access network equipment transmits, triggering the allocation of radio resources module is the terminal distribution Radio Resource, and wireless resource information directly is transmitted to terminal or is transmitted to terminal through the end points access network equipment by the source network side apparatus by the source network side apparatus, thereby solved the end points access network equipment of the terminal switching information of transmitting when the reception sources network equipment, when different with the target access network equipment under the actual target sector that will switch to of terminal (being that end points access network equipment and this access network equipment are different), the inter-network switching problem of terminal from the source network to the objective network improved terminal inter-network success rate for switching.

The embodiment of the invention also provides a kind of inter-network switched system, comprises terminal and source network side apparatus, and end points access network equipment and target access network equipment, and described end points access network equipment and target access network equipment all are positioned at the objective network side;

Described terminal is used for sending handover information by described source network side apparatus to described end points access network equipment;

Described end points access network equipment is used for obtaining the information of target access network equipment according to described handover information; When described target access network equipment and end points access network equipment not simultaneously, send described handover information to described target access network equipment;

Described target access network equipment is used for described wireless resource information is sent to described source network side apparatus, triggers described source network side apparatus and transmits described wireless resource information to described terminal; Perhaps, described wireless resource information is sent to described end points access network equipment, trigger described end points access network equipment and described wireless resource information is transmitted to described terminal by described source Access Network.

In the inter-network switched system that the embodiment of the invention provides, the end points access network equipment of the terminal switching information of transmitting when the reception sources network equipment, with terminal actual to switch under the target sector target access network equipment not simultaneously, the terminal switching information that the end points access network equipment is transmitted the source network side apparatus sends to target access network equipment, be the Radio Resource of terminal distribution objective network and send to terminal by target access network equipment, thereby solved when end points access network equipment and target access network equipment not simultaneously, the inter-network switching problem of terminal from the source network to the objective network improved terminal inter-network success rate for switching.

Description of drawings

Fig. 1 is the inter-network changing method first embodiment flow chart of the present invention;

Fig. 2 a is inter-network changing method application scenarios 3GPP evolution network framework figure of the present invention;

Fig. 2 b is an inter-network changing method application scenarios eHRPD network A .S0008 Organization Chart of the present invention;

Fig. 2 c is that the present invention spans into technology changing method application scenarios eHRPD network A .S0009 Organization Chart;

Fig. 2 d is the Organization Chart of embodiment of the invention application scenarios 3GPP network and eHRPD network interworking;

Fig. 3 is the inter-network changing method second embodiment flow chart of the present invention;

Fig. 4 a be the prior art terminal from E-UTRAN to eHRPD method for switching network flow chart;

There is the network architecture diagram of two adjacent eHRPD sector situations in Fig. 4 b for prior art eNB;

Fig. 5 is inter-network changing method the 3rd an embodiment flow chart of the present invention;

Fig. 6 is inter-network changing method the 4th an embodiment flow chart of the present invention;

Fig. 7 is inter-network changing method the 5th an embodiment flow chart of the present invention;

Fig. 8 is access network equipment example structure figure of the present invention;

Fig. 9 a is another access network equipment of the present invention first example structure figure;

Fig. 9 b is another access network equipment of the present invention second example structure figure;

Fig. 9 c is another access network equipment of the present invention the 3rd example structure figure;

Figure 10 is the inter-network switched system first example structure figure of the present invention;

Figure 11 is the inter-network switched system second example structure figure of the present invention;

Figure 12 is inter-network switched system the 3rd example structure figure of the present invention.

Embodiment

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

For ease of describing the technical scheme of the embodiment of the invention, at first the following term that occurs among the embodiment that respectively describes in detail of the present invention is described.The present invention is following respectively to be described in detail among the embodiment, and source network is the network at the current place of terminal; Objective network is the network that terminal need switch to.End points access network equipment, target access network equipment and source access network equipment all are positioned at the objective network side.Wherein the end points access network equipment is the access network equipment of the terminal switching information that is positioned at objective network side and the forwarding of reception sources network equipment; Target access network equipment is the affiliated access network equipment of target sector that terminal need switch to; The source access network equipment is the access network equipment that stores terminal session information.In addition, targeted packets controlled function equipment is objective network side and the Packet Control Function equipment related with target access network equipment of being positioned at.Source Packet Control Function equipment is objective network side and the Packet Control Function equipment related with the source access network equipment of being positioned at.According to the actual system architecture difference that relates to, as for eHRPD network A .S0008 framework, the session information of terminal is stored on the access network equipment; And for eHRPD network A .S0009 framework, the session information of terminal is stored on the Packet Control Function equipment; Source Packet Control Function equipment is the terminal session packets of information controlled function equipment that stores.

Fig. 1 is the inter-network changing method first embodiment flow chart of the present invention.As shown in Figure 1, present embodiment comprises:

The terminal switching information that step 11, the source network side apparatus that receives according to the end points access network equipment are transmitted obtains the target access network equipment information of switching.End points access network equipment and target access network equipment all are positioned at the objective network side.

Step 12, when target access network equipment and end points access network equipment not simultaneously, send this handover information to target access network equipment.

Step 13, be the wireless resource information of terminal distribution according to handover information, be transmitted to terminal by the source network side apparatus with target access network equipment.

Present embodiment is when the end points access network equipment of the terminal switching information of reception sources network equipment forwarding, with terminal actual to switch under the target sector target access network equipment not simultaneously, the handover information that the end points access network equipment is received sends to target access network equipment, by target access network equipment is the Radio Resource of terminal distribution objective network, and be transmitted to terminal by the source network side apparatus, thereby solved when end points access network equipment and target access network equipment not simultaneously, the inter-network switching problem of terminal from the source network to the objective network improved terminal inter-network success rate for switching.

On the basis of present embodiment technical scheme, when target access network equipment receives the handover information of end points access network equipment forwarding, can be the terminal distribution Radio Resource according to handover information.Finish the branch timing of terminal wireless resource in target access network equipment, target access network equipment can send to wireless resource information the end points access network equipment, sends to the source network side apparatus by the end points access network equipment, is transmitted to terminal by the source network side apparatus again; Perhaps, at the end points access network equipment when target access network equipment sends handover information, the end points access network equipment also sends to target access network equipment with the address information of source network side apparatus, like this, finish the distribution of terminal wireless resource when target access network equipment after, can wireless resource information be transmitted to terminal through the source network side apparatus by target access network equipment, thereby simplify the transfer process of wireless resource information.

Below illustrate the network architecture that the application scenarios of inter-network changing method embodiment of the present invention can relate to.

Fig. 2 a is inter-network changing method application scenarios 3GPP evolution network framework figure of the present invention.Shown in Fig. 2 a, in the LTE project of 3GPP, the universal mobile telecommunications system grounding wireless access network of evolution (EvolvedUMTS Terrestrial Radio Access Network, hereinafter to be referred as E-UTRAN) by (the Evolved Node B of the base station after the evolution, be called for short eNB) form, be responsible for the modulation of data; Gateway (Serving Gateway is hereinafter to be referred as S-GW) and packet data network gateway (PDN Gateway is hereinafter to be referred as PDN-GW) are the gateways after the evolution, are responsible for transmitting packet; Mobile management network element (MobilityManagement Entity is hereinafter to be referred as MME) is the signaling controlled entity equipment of evolution system, is responsible for functions such as authentication, mobile management.Network after the evolution does not provide the phonetic function of legacy circuit-switched, and the high data rate bearer service can be provided.

High Rate Packet Data (High Rate Packet Data is hereinafter to be referred as HRPD) network is a kind of third generation data radio communication system, and the phonetic function of legacy circuit-switched is not provided, and the high data rate bearer service can be provided; Also be called CDMA2000 1x EVD0; The eHRPD network is based on the High Rate Packet Data system of the evolution of HRPD.(the Radio Access Network of Access Network in the eHRPD network, abbreviation RAN) equipment comprises evolution access network node (Evolved Access Node, hereinafter to be referred as eAN) and Packet Control Function equipment (Packet Control Function, hereinafter to be referred as PCF), wherein eAN is equivalent to base station and base station controller, the modulation of responsible data and switching etc.; PCF is responsible for grouping control; HRPD gateway (HRPD Serving Gateway is hereinafter to be referred as HSGW) is formed by HRPD grouping of network data serving node (Packet Data Serving Node is called for short PDSN) upgrading, is responsible for data forwarding, authentication and charging etc.In the eHRPD network, terminal (AT) communicates to connect by aerial AL interface and eAN, and by A8 and A9 interface communication, A8 is an interface in the user plane between eAN and the PCF, and A9 is the signaling plane interface; PCF and HSGW are by A10 and A11 interface communication.

There are two kinds of frameworks in the eHRPD network, a kind of A.S0008 framework that is called, and another is called the A.S0009 framework.Fig. 2 b is an inter-network changing method application scenarios eHRPD network A .S0008 Organization Chart of the present invention.Fig. 2 c is that the present invention spans into technology changing method application scenarios eHRPD network A .S0009 Organization Chart.The difference of the maximum of two kinds of frameworks is that the position of function of session negotiation and mobile management is different.The session negotiation of A.S0008 framework and mobile management function are on AN, and the function of the session negotiation of A.S0009 framework and location management is on PCF; This framework difference shows as on the session transfer processing: shown in Fig. 2 b, for the A.S0008 framework, session is kept on the AN, so the transfer of session is to carry out between AN; Communicate by the A13 interface between the eAN.Shown in Fig. 2 c, for the A.S0009 framework, session is kept on the PCF, so the transfer of session is to carry out between PCF; Communicate by the A15 interface between the eAN, pass through the A13 interface communication between the PCF.

Fig. 2 d is the Organization Chart of embodiment of the invention application scenarios 3GPP network and eHRPD network interworking.Shown in Fig. 2 d, in the network architecture of intercommunication, increased by two interfaces between LTE network and eHRPD network: first interface is the S101 interface; Second interface is the S103 interface.The S101 interface is the interface between MME and the eAN, and its essence is a tunnel, transmits signaling or signaling and data between terminal and the objective network, and accessory terminal carries out pre-registration or switches to objective network from source network at objective network.The S103 interface is the interface between S-GW and the HSGW, and the data that are used to transmit the delay of 3GPP evolvement network send to terminal by the eHRPD network then to the eHRPD network.

Below all switch to the eHRPD network with E-UTRAN in the LTE project application scenarios be example, further specify the technical scheme of inter-network changing method embodiment of the present invention; Wherein, MME is the source network side apparatus of inter-network changing method embodiment of the present invention.

Fig. 3 is the inter-network changing method second embodiment flow chart of the present invention.Present embodiment is to be example (ginseng Fig. 2 b shown in) with A.S0008 framework among the eHRPD, illustrate when S101 end points eAN and target eAN not simultaneously, finish the technical scheme of the inter-network switching from E-UTRAN to eHRPD.In the present embodiment, S101 end points eAN is end points access network equipment of the present invention, and target eAN (Target eAN) is target access network equipment of the present invention, and source eAN (Source eAN) is source of the present invention access network equipment.The session negotiation of A.S0008 framework and mobile management function are on eAN, and session is kept on the eAN, so the transfer of session is to be undertaken by the A13 interface between eAN; By A8 and A9 interface communication, A8 is an interface in the user plane between eAN and the PCF, and A9 is the signaling plane interface.Flow chart hypothesis terminal as shown in Figure 3 is by pre-registration process and eAN consulting session.When inter-network switch to take place, user's face of following the A8 interface protocol between eAN and the PCF was connected (hereinafter referred to as the A8 connection) and disconnects.Suppose on E-UTRAN to exist the business of an activation, pre-registration is finished, the last static configuration sector mark of E-UTRAN information (Sector ID), and LTE and the internetwork S101 of eHRPD tunnel are established.

As shown in Figure 3, present embodiment comprises:

Step 31, E-UTRAN judge that according to the network actual conditions terminal should switch to eHRPD; For example: when E-UTRAN found that the signal of current place LTE network is very weak, E-UTRAN thought that this terminal should switch in the eHRPD network.

Step 32a, terminal send the handover information of eHRPD network to MME through E-UTRAN, this handover information comprises connection request (ConnectionRequest) message and routing update (RouteUpdate) message, in order to ask at eHRPD network wireless freedom and distribution service channel; Wherein, carry the terminal iidentification (UATI) that distributes in the sector mark information (Sector ID) of eNB static configuration and the pre-registration process in this connection request; Routing update (RouteUpdate) message comprises the pilot frequency information that terminal is measured, and this pilot frequency information comprises the pilot frequency deviation parameter (PilotPN) and the pilot frequency intensity of each pilot tone.

To transmitting handover information (ConnectionRequest+RouteUpdate) with the corresponding eAN (being S101 end points eAN (S101 endpoint eAN)) of this sector mark information (Sector ID), MME is carried at P-GW address information and up general route packing agreement key assignments (GRE key) information of P-GW in the direct message transfer of S101 (DirectTransfer) message and sends to S101 end points eAN simultaneously by the S101 tunnel for step 32b, MME.MME also can directly transmit (S101Direct Transfer) message by S101 and brings S101 end points eAN with sector mark information (Sector ID).

Sector ID is the identification number of one 128 bit (bit).The sector mark information (SectorID) of each HRPD sector all is unique.S101 end points eAN obtains target eAN information implementation method and can comprise: when switching generation, S101 end points eAN is according to sector mark information (SectorID), inquiry is sector mark information and pilot frequency deviation parameter (PilotPN) mapping table of storage in advance, can know pilot frequency deviation parameter (PilotPN) information of the sector that the sector of this sector mark information (SectorID) correspondence and this sector are adjacent.S101 end points eAN is by pilot frequency deviation parameter (PilotPN) information and the pilot frequency intensity of each measured pilot tone of terminal in comparison position update request (RouteUpdate) message, and which sector what the pilot signal that can accurately judge terminal and received was the strongest is; And then inquire about sector mark information and the eAN mapping table of storing in advance, and obtaining the affiliated eAN in the strongest sector of pilot signal, this eAN is the target eAN that terminal will switch to.

After step 33, S101 end points eAN receive that MME passes through the handover information (ConnectionRequest+RouteUpdate) of S101 tunnel transmission, judge target eAN information according to handover information, if target eAN is non-eAN, be target when then eAN and S101 end points eAN are not same eAN, S101 end points eAN sends the handover information of terminal to target eAN.Here new message of definable, i.e. A13-transparent transmission message (A13-Message Transfer), this message is convenient to utilize the A13 interface to transmit terminal switching information etc.A13-transparent transmission message comprises the handover information (ConnectionRequest+RouteUpdate) among the step 32b, the sector mark information (SectorID) of E-UTRUN static configuration, the up GRE key assignments information of P-GW address and P-GW.

Target eAN judges whether self stores the session information of terminal after receiving A13-transparent transmission (A13-Message Transfer) message.Concrete, target eAN can be known the eAN information that stores terminal session information according to the terminal iidentification that comprises in the handover information (UATI) information.If target eAN is known the terminal session information that self stores, execution in step 35; Otherwise, obtain the session information of terminal, execution in step 34a to other eAN that stores terminal session information (hereinafter referred to as source eAN (source eAN)).

Step 34a, target eAN send A13-Information Request (A13-SessionInformation Request) to source eAN, are used for the session information of acquisition request terminal.

Step 34b, source eAN send A13-session information response message (A13-SessionInformation Response) to target eAN, the session information that comprises terminal in this session information response message, as: session state information record (SSIR) and expansion session state information record (ESSIR) etc.

Step 34c, target eAN send A13 session information acknowledge message (A13-SessionInformation Confi rm) to source eAN, are used to acknowledge receipt of the session information of terminal.Execution in step 36a.

Step 35, target eAN send A9-foundation-A8 message (A9-Setup-A8) to target P CF; DSR indication in this message attributes (Data Ready Indicator is called for short DRI) is set to 1, and comprises a plurality of A8 tunnel GRE key assignments (GRE key) information of setting up, P-GW address and the up GRE key assignments of P-GW (GRE key) information.

Step 36a, target P CF send A11 register requirement (Registration Request is called for short RRQ) message (hereinafter referred to as A11-RRQ message) and give HSGW; A11-RRQ message comprises up GRE key assignments (GRE key) information of P-GW address and P-GW, and being used to ask HSGW is GRE key assignments (GRE key) information of terminal distribution data forwarding addresses and HSGW.

Step 36b, HSGW send A11 register requirement response (RegistrationResponse to target P CF, be called for short RRP) message (hereinafter referred to as A11-RRP message), this message comprises that HSGW is the data forwarding addresses of terminal distribution and the GRE key assignments of HSGW (GRE key) information.

If step 34a-step 34c takes place, execution in step 37; Otherwise, execution in step 38.

Step 37, HSGW notification source PCF discharge existing source PCF and are connected (connecting hereinafter referred to as A10) with user's face between the HSGW.

Source PCF initiates the register update process with HSGW subsequently, discharges original A10 and connects; Execution in step 38.

Step 37 can be carried out with step 36b is parallel.

Step 38, target P CF send an A9-connection-A8 (A9-Connect-A8) message and give target eAN; This message comprises that HSGW is the data forwarding addresses of terminal distribution and GRE key assignments (GREkey) information of HSGW.

Step 39, target eAN are the terminal distribution Radio Resource, and afterwards, target eAN sends the transparent transmission response to S101 end points eAN.Here new message of definable, i.e. A13-transparent transmission response message (A13-Message Transfer Response), this message is convenient to utilize the A13 interface to send the transparent transmission response message.A13-transparent transmission response message comprises that target eAN is the wireless resource information of terminal distribution, this wireless resource information comprises Traffic Channel Assignment (HRPD TrafficChannelAssignment, hereinafter to be referred as TCA) information and new terminal iidentification assignment information (UATIAssignment), wherein, Traffic Channel Assignment information comprises that HSGW is the data forwarding addresses and GRE key assignments (GRE key) information of terminal distribution; New terminal iidentification assignment information comprises that target eAN is the new terminal sign (being called for short UATI) of terminal distribution.

Step 310, S101 end points eAN directly transmit (S101 Direct Transfer) forwards with Radio Resource (Traffic Channel Assignment information and terminal iidentification assignment information) by S101 and give terminal.The data forwarding addresses and the GRE key information that comprise HSGW in the S101 message.

Concrete, S101 end points eAN directly transmits (S101 Direct Transfer) message with Traffic Channel Assignment information and terminal iidentification assignment information by S101 and sends to MME, through E-UTRUN Traffic Channel Assignment and terminal iidentification assignment information is transmitted to terminal by MME.

Step 311, when also having on the E-UTRAN when being detained data, can carry out data forwarding: E-UTRAN and begin by S-GW, adopting HSGW is the data forwarding addresses and the GRE key information of terminal distribution, transmits packet and gives HSGW.This step is an optional step.

Step 312, terminal obtain the air interface of HRPD.

Step 313, terminal send Traffic Channel and finish (TrafficChannelComplete is called for short TCC) message to target eAN.

Step 314, target eAN send A9-renewal-A8 (A9-Update-A8) message to target P CF after receiving TCC message.

Step 315, target P CF send A11-RRQ (A11-Registration Request) message to HSGW, and carry the indication (Active Start) of activated state conversion in this message.

Step 316, HSGW send A11-RRP (A11-Registration Response) message to target P CF, and this message comprises the initial airlink record of activated state (Active Start Airlink Record).

Step 317, target P CF send A9-renewal-A8 response message (A9-Update-A8Ack) message to target eAN.

Step 318, HSGW are that terminal is created a proxy-mobile IP (Proxy Mobile IP with P-GW, be called for short PMIP) binding, and finish other required program, for example: update strategy information (updatepolicy information), beginning billing operation (starts accounting operations) etc.

Step 318 can trigger be carried out by step 312, can with step 313 executed in parallel.

Step 319a, target eAN send the information of finishing of switching to S101 end points eAN.Here new message of definable, i.e. A13-handoff completion message (A13-Handoff Complete), this message is convenient to utilize the A13 interface to send to switch the information of finishing.

Step 319b, S101 end points eAN send to switch to target eAN and finish response.Here new message of definable, promptly A13-switches and finishes response message (A13-Handoff Complete ACK), and this message is convenient to utilize the A13 interface to send to switch and is finished response.

Step 320, S101 end points eAN finish (hereinafter referred to as the S101-handoff completion message) by the notice MME switching of S101 tunnel.

Step 321, MME send to switch to S101 end points eAN by S101 and finish response (finishing response message hereinafter referred to as the S101-switching).

Step 322, E-UTRAN, MME and S-GW discharge resource, the PMIP tunnel between comprising from S-GW to P-GW in the resource of release.

When present embodiment was not target eAN as S101 end points eAN, S101 end points eAN transmitted switching message by eAN interface (A13 interface) pellucidly to target eAN; Target eAN is the terminal distribution Radio Resource, and wireless resource information is passed to S101 end points eAN pellucidly by the eAN interface, and eAN issues terminal by the S101 tunnel with wireless resource information by the S101 end points; Thereby finish the switching of E-UTRAN to HRPD.It is not the problem of the E-UTRAN inter-network handoff failure that causes of target eAN that present embodiment has solved owing to S101 end points eAN, has effectively guaranteed E-UTRAN to the eHRPD handover success rate, avoids the service terminal that causes at handoff procedure, thereby has guaranteed quality of service.Further, when S101 end points eAN and target eAN are not when not having the session information of storage terminal on same eAN and the target eAN, for solving the problem that target eAN obtains terminal session, present embodiment target eAN can pass through eAN interface (A13 interface), obtains the session information of terminal to the source eAN that stores terminal session information; The method that target eAN obtains session is simple, helps reducing system complexity, and systematic function is provided.

Fig. 4 a be the prior art terminal from E-UTRAN to eHRPD method for switching network flow chart.Shown in Fig. 4 a, prior art is finished " pre-registration " flow process in terminal after, carry out following handover operation:

Step 41, E-UTRAN judge that according to the network actual conditions terminal should switch to eHRPD.

Step 42a, terminal are through the handover information of E-UTRAN to MME transmission eHRPD network, and this handover information carries the sector mark information (Sector ID) of eNB static configuration.

Step 42b, MME are to sending handover information with the corresponding eAN of sector mark information.

If the eHRPD network architecture is the A.S0009 framework, execution in step 43a-43c; If the eHRPD network architecture is the A.S0008 framework, execution in step 43c.

Step 43a, eAN send A9-foundation-A8 (A9-Setup-A8) message and give PCF, comprise GRE key assignments (GRE key) information of setting up single A8 tunnel.

It is in case of necessity that step 43b, PCF determine many A8 to connect, and PCF sends an A9-release-A8 and finishes message (A9-Release-A8 Complete) to eAN, and the cause value of this message is set to " needing multi-link ".Execution in step 44.

Step 43c, eAN send A9-foundation-A8 (A9-Setup-A8) message and give PCF, comprise GRE key assignments (GRE key) information of setting up a plurality of A8 tunnel.Execution in step 44.

Step 44, PCF send A11-RRQ (A11-Registration Request) message and give HSGW; Being used to ask HSGW is the GRE key assignments information of terminal distribution data forwarding addresses and HSGW.

Step 45, HSGW send A11-RRP (A11-Registration Response) message to PCF; This message comprises that HSGW is the data forwarding addresses of terminal distribution and the GRE key assignments information of HSGW.

Step 46, PCF send A9-connection-A8 (A9-Connect-A8) message and give eAN; This message comprises that HSGW is the data forwarding addresses and the GRE key information of terminal distribution.

Step 47, eAN are the Radio Resource of terminal distribution necessity, and are sent as the Radio Resource of terminal distribution by the S101 tunnel.

If step 48 data forwarding takes place, then E-UTRAN begins by S-GW, and adopting HSGW is the data forwarding addresses and the GRE key information of terminal distribution, transmits packet and gives HSGW.

Step 49, terminal obtain the air interface of HRPD.

Step 410, terminal send TCC (TrafficChannelComplete) message and give eAN.

Step 411, eAN send A9-renewal-A8 (A9-Update-A8) message to PCF after receiving TCC message, and carry the indication (Active Start) of activated state conversion in this message.

Step 412, PCF send A11-RRQ (A11-Registration Request) message to HSGW, and this message comprises the initial airlink record of activated state (Active Start Airlink Record).

Step 413, HSGW send A11-RRP response (A11-Registration Response) message to PCF.

Step 414, PCF send A9-renewals-A8 to eAN and respond (A9 '-Update-A8 Ack) message.

Step 415, HSGW are that terminal is created proxy-mobile IP (Proxy Mobile IP is called for short PMIP) binding.

Step 416, eAN send the S101 handoff completion message to MME.

Step 417, MME send the S101 switching to eAN and finish response message.

Step 418, E-UTRAN, MME and S-GW discharge resource, the PMIP tunnel between comprising from S-GW to P-GW in the resource of release.

The inventor finds in realizing inter-network switch method embodiment process of the present invention, in the prior art, the eAN of the objective network under the corresponding sector of sector mark information (SectorID) of static configuration on eNB is S101 end points eAN, but the target eAN under the target sector that S101 end points eAN may not be a terminal to be switched; Particularly cover the terminal at edge, have the S101 end points eAN possibility different with target eAN at eAN.If S101 end points eAN is not target eAN,, will cause the handoff failure of terminal from the source network to the objective network because S101 end points eAN can't directly distribute the Radio Resource of target eAN for terminal.For the eNB in E-UTRAN pre-registration district, the sector mark information (SectorID) of static configuration should be the sector mark information (SectorID) of the HRPD sector adjacent with eNB.If eNB is adjacent with a plurality of HRPD sector, can only select the sector mark information (SectorID) of the SectorID of a HRPD sector so as the eNB static configuration.There is the network architecture diagram of two adjacent HRPD sector situations in Fig. 4 b for prior art eNB.Shown in Fig. 4 b, S4 represents to be adjacent to two different HRPD sectors with eNB with S5; S4 belongs to eAN1, and S5 belongs to eAN2; ENB and S4 and S5 are adjacent; The corresponding sector of the sector mark information (SectorID) of the last static configuration of eNB is S5; Suppose when terminal from E-UTRAN when the eHRPD network switch to take place, the strong waveguide frequency signal that terminal is measured is from the signal of sector S4.As seen, eAN2 is S101 end points eAN, and eAN1 is target eAN.

When eAN2 receives the direct message transfer that MME sends (be among Fig. 4 a after the execution in step 42b), the sector mark information (SectorID (S5)) that eAN2 carries according to direct message transfer, table look-up and obtain the PilotPN of S5 and the PilotPN of adjacent sectors, and binding site upgrades PilotPN and pilot frequency intensity in (RouteUpdate) message, and the strong waveguide frequency signal that can know that terminal receives is from sector S4; And S4 is the sector that is positioned at adjacent eAN (being eAN1).Because sector S4 belongs to eAN1, so eAN2 can't be the terminal distribution Radio Resource directly, thereby causes handoff failure.

Terminal has been consulted session with objective network eHRPD by pre-registration, but prior art can't be transferred on the target eAN in fine session with terminal, specifically can comprise two kinds of situations: if the session that consults is kept on the S101 end points eAN, prior art can't directly be transferred to target eAN with the session of terminal from S101 end points eAN; Perhaps, if the session that consults is kept on other the eAN, but this other eAN neither target eAN, and prior art can't realize the session of terminal is transferred on the target eAN from the eAN that preserves well.By above-mentioned analysis as can be known, prior art is under the different situations with target eAN of S101 end points eAN, how to finish that inter-network is switched and terminal session shifts and do not have corresponding solution, thereby handover success rate is lower between the network that causes.

What be different from prior art is, present embodiment when S101 end points eAN and target eAN not simultaneously, S101 end points eAN passes through eAN interface (A13 interface), transmits switching message pellucidly to target eAN; Target eAN is the terminal distribution Radio Resource, and wireless resource information is passed to S101 end points eAN pellucidly by the eAN interface, and eAN issues terminal by the S101 tunnel with wireless resource information by the S101 end points; Thereby finish the switching of E-UTRAN to eHRPD.It is not the problem of the E-UTRAN inter-network handoff failure that causes of target eAN that present embodiment has solved owing to S101 end points eAN, has effectively guaranteed E-UTRAN to the eHRPD handover success rate, avoids the service disconnection that causes at handoff procedure, thereby has guaranteed quality of service.Further, when S101 end points eAN and target eAN are not same eAN, and when not having the session information of storage terminal on the target eAN, for solving the problem that target eAN obtains terminal session, present embodiment target eAN can pass through eAN interface (A13 interface), obtain the session information of terminal to the source eAN that stores terminal session information, make target eAN can utilize prior art to obtain session, thereby solve when S101 end points eAN and target eAN not simultaneously, the technical problem of terminal session information transfer to the target eAN, method is simple, help reducing system complexity, systematic function is provided.

Fig. 5 is inter-network changing method the 3rd an embodiment flow chart of the present invention.The difference of present embodiment and embodiment shown in Figure 3 is: present embodiment is to be example (shown in Fig. 2 c) with A.S0009 framework among the eHRPD, illustrate when S101 end points eAN and target eAN not simultaneously, finish the technical scheme of the switching from E-UTRAN to eHRPD.The session negotiation of A.S0009 framework and mobile management function are on PCF, and session is kept on the PCF, so the transfer of session is to carry out between PCF, between the PCF by the A13 interface communication, between the AN by the A15 interface communication.As shown in Figure 5, present embodiment comprises:

Step 51-step 52b is identical with step 31-step 32b embodiment illustrated in fig. 3.

Step 53, S101 end points eAN obtain target eAN information according to handover information after receiving that MME passes through the handover information (ConnectionRequest+RouteUpdate) of S101 tunnel transmission, send the handover information of terminal to target eAN.Here new message of definable, i.e. A15-transparent transmission message (A15-Message Transfer), this message are convenient to utilize the terminal switching information that the A15 interface transmits etc.A15-transparent transmission message comprises the handover information (ConnectionRequest+RouteUpdate) among the step 52b, the sector mark information (SectorID) of E-UTRUN static configuration, the up GRE key assignments information of P-GW address and P-GW.

Step 54, target eAN send A9-foundation-A8 message (A9-Setup-A8) to target P CF; DSR indication in this message attributes (Data Ready Indicator is called for short DRI) is set to 1, and comprises single A8 tunnel GRE key assignments (GRE key) information of setting up, P-GW address and the up GRE key assignments of P-GW (GRE key) information; This message requires to obtain data forwarding addresses that HSGW is a terminal distribution and the GRE key assignments information of HSGW simultaneously; Information Request (SessionInformation Required) territory of this message A9 indication item is set to 1, obtains the session information record (Session Information Record) of terminal from target P CF in order to request.

After target P CF receives A9-foundation-A8 message (A9-Setup-A8) message, judge whether self stores the session information of terminal, if execution in step 56 is arranged; Otherwise, obtain PCF (hereinafter referred to as the source PCF) address information that stores terminal session information, execution in step 55a.

Target P CF can be known the PCF information that stores terminal session information according to the UATI information that comprises in the handover information.If target P CF is known the terminal session information that self stores, execution in step 56; Otherwise, obtain the session information of terminal, execution in step 55a to other PCF that stores terminal session information (hereinafter referred to as source PCF (Source PCF)).

Step 55a, target P CF send A13-Information Request (A13-SessionInformation Request) to source PCF, are used for the session information of acquisition request terminal.

Step 55b, source PCF send A13-session information response message (A13-SessionInformation Response) to target P CF, session information response message comprises the session information of terminal, as: session state information record (SSIR) and expansion session state information record (ESSIR) etc.

Step 55c, target P CF send A13 session information acknowledge message (A13-SessionInformation Confirm) to source PCF, are used to acknowledge receipt of the session information of terminal.Execution in step 56.

Step 56, to set up when target P CF decision that many A8 connect be in case of necessity, target P CF sends A9-release-A8 and finishes message (A9-Release-A8 Complete) message to target eAN, carry SSIRs information in this message, and the message cause value is set to " needing multi-link ".

Step 57, target eAN send A9-foundation-A8 (A9-Setup-A8) message and give target P CF, and DSR indication (DRI) in the message attributes is set to 1, and comprise the GRE key assignments information of setting up a plurality of A8 tunnel; This message also comprises the P-GW address of receiving in the step 53 and the up GRE key assignments information of P-GW.

Step 58a, target P CF send A11-RRQ (A11-Registration Request) message and give HSGW; This message comprises the information of P-GW address and up GRE key, and being used to ask HSGW is the GRE key assignments information of terminal distribution data forwarding addresses and HSGW.

Step 58b, HSGW send A11-RRP (A11-Registration Response) message to target P CF; This message comprises that HSGW is the data forwarding addresses of terminal distribution and the GRE key assignments information of HSGW.

If step 55a-step 55c takes place, execution in step 59; Otherwise, execution in step 510.

Step 59, HSGW notification source PCF discharge existing source PCF and are connected with user's face between the HSGW, promptly discharge A10 and connect.

Source PCF initiates the register update process with HSGW subsequently, discharges original A10 and connects; Execution in step 510.

Step 59 can be carried out with step 58b is parallel.

Step 510, target P CF send A9-connection-A8 (A9-Connect-A8) message and give target eAN; This message comprises that HSGW is the data forwarding addresses of terminal distribution and the GRE key assignments information of HSGW.

Step 511, target eAN are the terminal distribution Radio Resource, and afterwards, target eAN sends the transparent transmission response to S101 end points eAN.Here new message of definable, i.e. A15-transparent transmission response message (A15-Message Transfer Response), this message is convenient to utilize the A15 interface to send the transparent transmission response message.A15-transparent transmission response message comprises that target eAN is the wireless resource information of terminal distribution, this wireless resource information comprises Traffic Channel Assignment information and terminal iidentification assignment information, wherein, Traffic Channel Assignment information comprises that HSGW is the data forwarding addresses and the GRE key assignments information of terminal distribution; The terminal iidentification assignment information comprises that target eAN is the new terminal sign of terminal distribution.

Step 512, S101 end points eAN are transmitted to terminal with Radio Resource (Traffic Channel Assignment information and terminal iidentification assignment information) by the S101 interface.

Step 513, when also having on the E-UTRAN when being detained data, can carry out data forwarding: E-UTRAN and begin by S-GW, adopting HSGW is the data forwarding addresses of terminal distribution and the GRE key assignments information of HSGW, transmits packet and gives HSGW.This step is an optional step.

Step 514, terminal obtain the air interface of HRPD.

Step 515, terminal send TCC message to target eAN.

Step 516, target eAN send A9-renewal-A8 (A9-Update-A8) message to target P CF after receiving TCC message.

Step 517, target P CF send A11-RRQ (A11-Registration Request) message to HSGW, and carry the indication (Active Start) of activated state conversion in this message.

Step 518, HSGW send A11-RRP (A11-Registration Response) message to target P CF, and this message comprises the initial airlink record of activated state (Active Start Airlink Record).

Step 519, target P CF send A9-renewal-A8 response (A9-Update-A8 Ack) message to target eAN.

Step 520, HSGW are that terminal is created a proxy-mobile IP (Proxy Mobile IP with P-GW, be called for short PMIP) binding, and finish other required program, for example: update strategy information (updatepolicy information), beginning billing operation (starts accounting operations) etc.

Step 520 can trigger be carried out by step 514, can with step 515 executed in parallel.

Step 521a, target eAN send the information of finishing of switching to S101 end points eAN.Here new message of definable, i.e. A15-handoff completion message (A15-Handoff Complete), this message is convenient to utilize the A15 interface to send to switch the information of finishing.

Step 521b, S101 end points eAN send to switch to target eAN and finish response.Here new message of definable, promptly A15-switches and finishes response message (A15-Handoff Complete ACK), and this message is convenient to utilize the A15 interface to send to switch and is finished response.

Step 522, S101 end points send the S101-handoff completion message to MME.

Step 523, MME send the S101-switching to S101 end points eAN and finish response message.

Step 524, E-UTRAN, MME and S-GW discharge resource, the PMIP tunnel between comprising from S-GW to P-GW in the resource of release.

Present embodiment when S101 end points eAN and target eAN not simultaneously, S101 end points eAN transmits switching message (ConnectionRequest+RouteUpdate) by eAN interface (A15 interface) pellucidly to target eAN; Target eAN transmits handover information to target P CF, by target P CF is the terminal distribution Radio Resource, and wireless resource information sent to target eAN, and target eAN passes to S101 end points eAN pellucidly by the eAN interface, and eAN issues terminal by the S101 tunnel with this information by the S101 end points; Thereby finish the switching of E-UTRAN to HRPD.Present embodiment has solved under HRPD network A .S0009 framework, when S101 end points eAN and target eAN not simultaneously, E-UTRAN has guaranteed effectively that to the technology that the spans into switching problem of eHRPD E-UTRAN is to the eHRPD handover success rate.Further, when S101 end points eAN and target eAN are not when not having the session information of storage terminal on same eAN and the target P CF, for solving the problem that target P CF obtains terminal session, present embodiment target P CF can pass through PCF interface (A13 interface), obtain the session information of terminal to the source PCF that stores terminal session information, thereby make target P CF can utilize prior art to obtain session, method is simple, help reducing system complexity, systematic function is provided.

Fig. 6 spans into technology changing method the 4th embodiment flow chart for the present invention.The difference of present embodiment and embodiment shown in Figure 3 is: present embodiment is in carrying out wireless resource information (Traffic Channel Assignment information and new terminal identification information) transparent transmission process, be directly to send to MME based on the S101 tunnel, and do not need to transmit by S101 end points eAN by target eAN.As shown in Figure 6, present embodiment comprises:

Step 61-step 62b is identical with step 31-step 32b embodiment illustrated in fig. 3.

After step 63a, S101 end points eAN receive that MME passes through the handover information (ConnectionRequest+RouteUpdate) of S101 tunnel transmission, obtain target eAN information according to handover information, send A13-transparent transmission message (A13-Message Transfer) to target eAN, this message comprises the handover information (ConnectionRequest+RouteUpdate) among the step 32b, the sector mark information (SectorID) of E-UTRUN static configuration, the up GRE key assignments information of P-GW address and P-GW and the address information of MME.

Step 63b, target eAN send A13-transparent transmission response message (A13-Message Transfer Response) to S101 end points eAN.

Step 64-step 68 is identical with step 34-step 38 embodiment illustrated in fig. 3.

Step 69, target eAN are the terminal distribution Radio Resource, afterwards, target eAN sends S101 by the S101 tunnel to MME and directly transmits (S101 Direct Transfer) message, the direct message transfer of this S101 comprises that target eAN is the wireless resource information of terminal distribution, this wireless resource information comprises Traffic Channel Assignment information and terminal iidentification assignment information, in addition, the direct message transfer of S101 comprises that HSGW is the data forwarding addresses of terminal distribution and the GRE key assignments information of HSGW.

Step 610, MME are transmitted to terminal with the wireless resource information (Traffic Channel Assignment information and terminal iidentification assignment information) of HRPD through E-UTRUN.

Step 611-step 618 is identical with step 310-step 318 embodiment illustrated in fig. 3.

Step 619, target eAN send the S101-handoff completion message by the S101 tunnel to MME.

Step 620, MME send the S101-switching to target eAN and finish response message.

Step 621, E-UTRAN, MME and S-GW discharge resource, the PMIP tunnel between comprising from S-GW to P-GW in the resource of release.

Present embodiment is on the basis of realization technique effect embodiment illustrated in fig. 3, send wireless resource information such as Traffic Channel Assignment information and terminal iidentification assignment information to MME by target eAN, thereby having simplified tunnel transmission target eAN is the flow process of the wireless resource information of terminal distribution, help reducing system complexity, improve systematic function.

Fig. 7 is inter-network changing method the 5th an embodiment flow chart of the present invention.The difference of present embodiment and embodiment shown in Figure 5 is: present embodiment is in carrying out wireless resource information (Traffic Channel Assignment information and new terminal identification information) transparent transmission process, be directly to send to MME based on the S101 tunnel, and do not need to transmit by S101 end points eAN by target eAN.As shown in Figure 7, present embodiment comprises:

Step 71-step 72b is identical with step 51-step 52b embodiment illustrated in fig. 5.

After step 73a, S101 end points eAN receive that MME passes through the handover information (ConnectionRequest+RouteUpdate) of S101 tunnel transmission, obtain target eAN information according to handover information, send A15-transparent transmission message (A15-Message Transfer) to target eAN, this message comprises the handover information (ConnectionRequest+RouteUpdate) among the step 52b, the sector mark information (SectorID) of E-UTRUN static configuration, the up GRE key assignments information of P-GW address and P-GW and the address information of MME.

Step 73b, target eAN send A15-transparent transmission response message (A15-Message Transfer Ack) to S101 end points eAN.

Step 74a-step 710 is identical with step 54a-step 510 embodiment illustrated in fig. 5.

Step 711, target eAN are the terminal distribution Radio Resource, afterwards, target eAN sends S101 by the S101 tunnel to MME and directly transmits (S101 Direct Transfer) message, the direct message transfer of this S101 comprises that target eAN is the wireless resource information of terminal distribution, this wireless resource information comprises Traffic Channel Assignment information and terminal iidentification assignment information, in addition, the direct message transfer of S101 comprises that HSGW is the data forwarding addresses of terminal distribution and the GRE key assignments information of HSGW; The terminal iidentification assignment information comprises that target eAN is the new terminal sign of terminal distribution.

Step 712, MME are transmitted to terminal with the wireless resource information (Traffic Channel Assignment information and terminal iidentification assignment information) of HRPD through E-UTRUN.

Step 713-step 720 is identical with step 513-step 520 embodiment illustrated in fig. 5.

Step 721, target eAN send the S101-handoff completion message by the S101 tunnel to MME.

Step 722, MME send the S101-switching to target eAN and finish response message.

Step 723, E-UTRAN, MME and S-GW discharge resource, the PMIP tunnel between comprising from S-GW to P-GW in the resource of release.

Present embodiment is on the basis of realization technique effect embodiment illustrated in fig. 5, send wireless resource information such as Traffic Channel Assignment information and terminal iidentification assignment information to MME by target eAN, thereby having simplified tunnel transmission target eAN is the flow process of the wireless resource information of terminal distribution, help reducing system complexity, improve systematic function.

Fig. 8 is access network equipment example structure figure of the present invention.As shown in Figure 8, present embodiment comprises parsing module 81, judge module 82 and communication module 83.

Parsing module 81 is used for the terminal switching information according to the source network side apparatus forwarding that receives, and obtains the target access network equipment information of switching.

Judge module 82 is used for the target access network equipment information obtained according to parsing module 81, judges whether this target access network equipment is this access network equipment.

Communication module 83 is used for judging target access network equipment and this access network equipment not simultaneously when judge module 82, to target access network equipment transmission handover information; And the receiving target access network equipment is the wireless resource information of terminal distribution according to handover information, and transmits wireless resource information by the source network side apparatus to terminal.

Present embodiment is when judge module when to judge access network equipment self be not target access network equipment under the terminal target sector that will switch to, the terminal switching information of the source network side apparatus being transmitted by communication module sends to target access network equipment, and be that the terminal distribution wireless resource information sends to terminal by the source network side apparatus with target access network equipment, thereby solved the access network equipment of the terminal switching information of transmitting when the reception sources network equipment, when different with the target access network equipment under the actual target sector that will switch to of terminal (being that this access network equipment is different with target access network equipment), the inter-network switching problem of terminal from the source network to the objective network improved terminal inter-network success rate for switching.

Fig. 9 a is another access network equipment of the present invention first example structure figure.Shown in Fig. 9 a, present embodiment comprises receiver module 91, allocation of radio resources module 92 and sending module 93.

Receiver module 91 is used to receive the terminal switching information that source network side apparatus that the end points access network equipment sends is transmitted.

The handover information that allocation of radio resources module 92 is used for receiving according to receiver module 91 is the terminal distribution Radio Resource.

Sending module 93 is used for allocation of radio resources module 92 assigned radio resource information are sent to the source network side apparatus, triggers the source network side apparatus and transmits wireless resource information to terminal; Perhaps,, send to the end points access network equipment, trigger the end points access network equipment and wireless resource information is transmitted to terminal by the source Access Network with allocation of radio resources module 92 assigned radio resource information.

When present embodiment receives the handover information of the source network lateral terminal that the end points access network equipment transmits when receiver module, triggering the allocation of radio resources module is the terminal distribution Radio Resource, and wireless resource information directly is transmitted to terminal or is transmitted to terminal through the end points access network equipment by the source network side apparatus by the source network side apparatus, thereby solved the end points access network equipment of the terminal switching information of transmitting when the reception sources network equipment, when different with the target access network equipment under the actual target sector that will switch to of terminal (being that end points access network equipment and this access network equipment are different), the inter-network switching problem of terminal from the source network to the objective network improved terminal inter-network success rate for switching.

Fig. 9 b is another access network equipment of the present invention second example structure figure.The difference of present embodiment and Fig. 9 a illustrated embodiment is that the present embodiment access network equipment also can comprise the first session information acquisition module 94.

The first session information acquisition module 94 is used for when this access network equipment does not store the session information of terminal, obtains the session information of terminal from the source access network equipment according to the handover information of receiver module 91 receptions.

Present embodiment is on the basis of realizing Fig. 9 a illustrated embodiment technique effect, when this equipment is not when not having the session information of storage terminal on same access network equipment and this equipment with the end points access network equipment, access network equipment can obtain terminal session information from the source access network equipment, thereby further solved the problem of terminal session migration, help reducing system complexity, systematic function is provided.

Fig. 9 c is another access network equipment of the present invention the 3rd example structure figure.The difference of present embodiment and Fig. 9 c illustrated embodiment is that the present embodiment access network equipment also can comprise the second session information acquisition module 95.The second session information acquisition module 95 is used for the terminal iidentification that the handover information that receiver module 91 receives comprises is sent to targeted packets controlled function equipment, trigger targeted packets controlled function equipment, do not store the time at targeted packets controlled function equipment, obtain the session information of terminal from source Packet Control Function equipment with terminal iidentification relevant terminal session information.

Present embodiment is on the basis of realizing Fig. 9 a illustrated embodiment technique effect, when this equipment and end points access network equipment are not same access network equipment, triggering targeted packets controlled function equipment, do not store the time at targeted packets controlled function equipment, obtain the session information of terminal from source Packet Control Function equipment with terminal iidentification relevant terminal session information; Thereby further solved the problem of terminal session migration, helped reducing system complexity, systematic function is provided.

Figure 10 is the inter-network switched system first example structure figure of the present invention.As shown in figure 10, present embodiment comprises terminal 101, source network side apparatus 102, end points access network equipment 1031 and target access network equipment 1032; Wherein, end points access network equipment 1031 and target access network equipment 1032 all are positioned at objective network side 103.

Terminal 101 is used for sending handover information by source network side apparatus 102 to end points access network equipment 1031.Concrete, terminal 101 sends handover information to source network side apparatus 102; Source network side apparatus 102 handover information of self terminal 101 in the future sends to end points access network equipment 1031.

End points access network equipment 1031 is used for terminal 101 handover informations according to 102 forwardings of source network side apparatus, obtains the information of target access network equipment 1032; When target access network equipment 1032 and end points access network equipment 1031 not simultaneously, send handover informations to target access network equipment 1032.

It is terminal 101 distributing radio resource that target access network equipment 1032 is used for according to handover information; Wireless resource information is sent to source network side apparatus 102, trigger source network side apparatus 102 wireless resource information is sent to terminal 101; Perhaps, wireless resource information is sent to end points access network equipment 1031, trigger end points access network equipment 1031, wireless resource information is transmitted to terminal 101 by source network side apparatus 102.

Present embodiment is when the end points access network equipment of the terminal switching information of reception sources network equipment forwarding, with terminal actual to switch under the target sector target access network equipment not simultaneously, the terminal switching information that the end points access network equipment is transmitted the source network side apparatus sends to target access network equipment, be the Radio Resource of terminal distribution objective network and send to terminal by target access network equipment, thereby solved when end points access network equipment and target access network equipment not simultaneously, the inter-network switching problem of terminal from the source network to the objective network improved terminal inter-network success rate for switching.

Figure 11 is the inter-network switched system second example structure figure of the present invention.As shown in figure 11, present embodiment and difference embodiment illustrated in fig. 10 are that present embodiment inter-network switched system also comprises the source access network equipment 1033 that is positioned at objective network side 103.

Source access network equipment 1033 stores the session information of terminal 101.

Accordingly, target access network equipment 1032 also is used at self (target access network equipment 1032) and according to the handover information of terminal 101, obtains the session information of terminal 101 from source access network equipment 1033 when not storing the session information of terminal 101.

Present embodiment is on the basis of realization technique effect embodiment illustrated in fig. 10, when end points access network equipment and target access network equipment are not when not having the session information of storage terminal on same access network equipment and the target access network equipment, obtain the session information of terminal to the source access network equipment that stores terminal session information, thereby solve the problem of terminal session migration, the method that the present embodiment target access network equipment is obtained session is simple, help reducing system complexity, systematic function is provided.

Figure 12 is inter-network switched system the 3rd example structure figure of the present invention.As shown in figure 12, present embodiment and difference embodiment illustrated in fig. 10 are, present embodiment inter-network switched system also comprises: targeted packets controlled function equipment 1034 and source Packet Control Function equipment 1035, wherein, targeted packets controlled function equipment 1034 and source Packet Control Function equipment 1035 all are positioned at objective network side 103.

Source Packet Control Function equipment 1035 stores the session information of terminal 101.

Accordingly, target access network equipment 1032 also is used for the terminal iidentification that terminal 101 handover informations comprise is sent to targeted packets controlled function equipment 1034.

When targeted packets controlled function equipment 1034 is used at self (targeted packets controlled function equipment 1034) and does not store session information with terminal iidentification relevant terminal 101, obtain the session information of terminal 101 from source Packet Control Function equipment 1035.

Present embodiment is on the basis of realization technique effect embodiment illustrated in fig. 10, when end points access network equipment and target access network equipment are not when not having the session information of storage terminal on same access network equipment and the targeted packets controlled function equipment, obtain the session information of terminal to the source Packet Control Function equipment that stores terminal session information, thereby solve the problem of terminal session migration, the method of present embodiment terminal session migration is simple, help reducing system complexity, systematic function is provided.

One of ordinary skill in the art will appreciate that: accompanying drawing is the schematic diagram of a preferred embodiment, and module in the accompanying drawing or flow process might not be that enforcement the present invention is necessary.

One of ordinary skill in the art will appreciate that: the module in the device among the embodiment can be described according to embodiment and be distributed in the device of embodiment, also can carry out respective change and be arranged in the one or more devices that are different from present embodiment.The module of the foregoing description can be merged into a module, also can further split into a plurality of submodules.

The invention described above embodiment sequence number is not represented the quality of embodiment just to description.

One of ordinary skill in the art will appreciate that: all or part of step that realizes said method embodiment can be finished by the relevant hardware of program command, aforesaid program can be stored in the computer read/write memory medium, this program is carried out the step that comprises said method embodiment when carrying out; And aforesaid storage medium comprises: various media that can be program code stored such as ROM, RAM, magnetic disc or CD.

It should be noted that at last: above embodiment only in order to technical scheme of the present invention to be described, is not intended to limit; Although with reference to previous embodiment the present invention is had been described in detail, those of ordinary skill in the art is to be understood that: it still can be made amendment to the technical scheme that previous embodiment is put down in writing, and perhaps part technical characterictic wherein is equal to replacement; And these modifications or replacement do not make the essence of appropriate technical solution break away from the spirit and scope of embodiment of the invention technical scheme.

Claims

1, a kind of inter-network changing method is characterized in that, comprising:

2, inter-network changing method according to claim 1 is characterized in that, described is the wireless resource information of described terminal distribution with target access network equipment according to described handover information, is transmitted to described terminal by described source network side apparatus, comprising:

Described target access network equipment sends to described end points access network equipment with described wireless resource information;

Described end points access network equipment is transmitted to described terminal with described wireless resource information by described source network side apparatus.

3, inter-network changing method according to claim 1 is characterized in that, when described target access network equipment sends described handover information, also comprises:

Send the address information of source network side apparatus to described target access network equipment.

4, inter-network changing method according to claim 3 is characterized in that, described is that the wireless resource information of described terminal distribution sends to described terminal with target access network equipment, comprising:

Described target access network equipment sends to described wireless resource information and the corresponding source network side apparatus of described address information;

Described source network side apparatus sends to described terminal with described wireless resource information.

5, according to the described arbitrary inter-network changing method of claim 1-4, it is characterized in that, when described target access network equipment receives described handover information, also comprise:

When described target access network equipment did not store the session information of described terminal, described target access network equipment was obtained the session information of described terminal from the source access network equipment.

6, according to the described arbitrary inter-network changing method of claim 1-4, it is characterized in that, when described target access network equipment receives described handover information, also comprise:

The terminal iidentification that described target access network equipment comprises described handover information sends to targeted packets controlled function equipment;

When described targeted packets controlled function equipment does not store with described terminal iidentification relevant terminal session information, obtain the session information of described terminal from source Packet Control Function equipment.

7, a kind of access network equipment is characterized in that, comprising:

8, a kind of access network equipment is characterized in that, comprising:

9, access network equipment according to claim 8 is characterized in that, also comprises:

The first session information acquisition module is used for when this access network equipment does not store the session information of described terminal, obtains the session information of described terminal from the source access network equipment according to described handover information.

10, access network equipment according to claim 8 is characterized in that, also comprises:

The second session information acquisition module, be used for the terminal iidentification that described handover information comprises is sent to targeted packets controlled function equipment, trigger described targeted packets controlled function equipment, do not store the time at described targeted packets controlled function equipment, obtain the session information of described terminal from source Packet Control Function equipment with described terminal iidentification relevant terminal session information.

11, a kind of inter-network switched system comprises terminal and source network side apparatus, it is characterized in that, also comprises: end points access network equipment and target access network equipment, and described end points access network equipment and target access network equipment all are positioned at the objective network side;

12, inter-network switched system according to claim 11 is characterized in that, also comprises:

Be positioned at the source access network equipment of objective network side, described source access network equipment stores the session information of described terminal;

Described target access network equipment also is used for when self not storing the session information of described terminal, obtains the session information of described terminal from described source access network equipment.

13, inter-network switched system according to claim 11 is characterized in that, also comprises:

Targeted packets controlled function equipment and source Packet Control Function equipment, described targeted packets controlled function equipment and source Packet Control Function equipment all are positioned at the objective network side;

Described source Packet Control Function device storage has the session information of described terminal;

Described target access network equipment also is used for the terminal iidentification that described handover information comprises is sent to targeted packets controlled function equipment;

Described targeted packets controlled function equipment is used for obtaining the session information of described terminal from described source Packet Control Function equipment when self not storing with described terminal iidentification relevant terminal session information.