CN101160765A - Method and system of implementing activation state inter-AN switch in HRPD network - Google Patents

Abstract

The present invention relates to a method for realizing the switching between the activated AN in the HRPD network and the system. The method of the invention mainly comprises the following procedures: confirming that the switching operation is needed between the access network AN, actuating the switching process to do the switching processing between the ANs, and transmitting beforehand the data to be transmitted to the terminal to the switched destination AN in the switching process; then, transmitting the data which needs to be transmitted to the terminal to the terminal by the source AN or destination AN in the switching process according to the treating result of the switching process. It can be seen that the method of the invention can increase the continuity of the business; even if the AN switching process is failed, the source PCF still can transmit the data information after the stating of the switching when the terminal retreats to the source AN as the source PCF can receive the data of the PDSN in the switching process all the times, and the continuity of the business is increased.

Description

The method and system switched between activated state AN are realized in HRPD networks

The method and system technical field switched between activated state AN is realized in HRPD networks

The present invention relates to realize activated state AN (Access Network, access network in communication technical field, more particularly to a kind of HRPD (H PD-High Rate Packet Data, HRPD) network）Between the method and system that switch.

Background technology

With the development of the communication technology, in order to solve CDMA (Code Division Multiple Access, CDMA）The bottleneck problem in air interface in system, International Standards Organization 3GPP2 (3rd Generation Partnership Project 2, third generation cooperative partner program 2) of 3G (Third Generation) Moblie has issued the standard of HRPD network technologies.Its main purpose is to improve the message transmission rate of wave point, and the 153.6kbit/s relative to CDMA20001X, HRPD technologies can provide forward data rate up to 2.4Mbit/s.

In HRPD networks, HRPD employs new modulation technique on interface in the air and adds the methods such as data rate control, optimizing scheduling and time division multiplexing so that the message transmission rate in air interface is greatly improved.HRPD technologies can be on a CDMA carrier frequency (1.25MHz) using special data channel support high-speed packet data service, forward direction peak data rate reversely supports unique user peak data rate 153.6kbit/s up to 2.4576Mbit/s.

When carrying out HRPD network designs, it is necessary to which independent carrier frequency supports HRPD.This is allowed for when user terminal is moved in HRPD networks, may be moved to by HRPD networks a AN under another AN, at this time, it may be necessary to carry out the hand-off process by source AN to purpose AN.

At present, Dormant (dormancy between AN is only supported in 3GPP2 standards）The switching of state, corresponding handoff procedure is specially：When Develop Data business is moved to MPS process edge zone to terminal in HRPD networks, need to be switched to another AN and carry on data service, now Packet data service is switched to Dormant states by system in source AN by activated state, is then switched to purpose AN in Dormant states;Enter after purpose AN, Packet data service is switched to activated state by system by Dormant states again in purpose AN.

Switching mode between above-mentioned AN can be realized by source AN to purpose AN handover operation.But, for the higher data service of requirement of real-time, such as VoIP (Voice over IP, based on IP Voice）, Video Phone (videophone；), (Push-To-Talk, button is to lead to PTT；), Streaming Media etc., if using service disconnection is likely resulted in above-mentioned handoff process, having a strong impact on use of the user to business.

That is, at present standard provide AN between, PCF (Packet Control Function, Packet Control Function）Between dormant state switch implementation method,, it is necessary to discharge PPP (Point-to-Point Protocol, the point-to-point protocol) connections used in handoff procedure, PDSN (Packet Data Service Network, packet data service network）Need for the new PPP connections of purpose network allocation.In PPP connection procedures are redistributed, on the one hand, newly assigned PPP connections are probably due to reason causes assigning process to fail the problem of resource etc. so that customer service is interrupted；On the other hand, need the regular hour because PDSN re-establishes a PPP connection, therefore, also will the business current to user cause than larger time delay influence.

For this reason, it may be necessary to which providing can ensure that the unbroken direct-cut operation processing procedure of business can be ensured in handoff procedure between AN.However, hand-off process flow between the AN of above-mentioned dormant state is only realized in standard at present, and between also undefined HRPD systems AN, between PCF activated state direct-cut operation flow.The content of the invention

In view of the problems of above-mentioned prior art, it is an object of the invention to provide the method and system that switch between activated state AN are realized in a kind of HRPD networks, to ensure continuity of the user terminal in business when AN, PCF switch.

On this basis, the problem of present invention is further solved is to ensure the rollback property after handoff failure, so as to improve the reliability of service communication.

The purpose of the present invention is achieved through the following technical solutions：

The invention provides realizing the method that switches between activated state AN in a kind of HRPD Wang Network, including：

A, determine to need to switch over operation between access network AN, and start handoff procedure；In handoff procedure between B, AN, before the connection that terminal is completed with purpose AN is set up, the connection set up between purpose AN and packet data service network PDSN, and send user data from PDSN to purpose AN/ Packet Control Functions PCF；

C, after terminal completes to set up with purpose AN connection, then the data received from PDSN are sent from purpose AN/PCF to terminal. Wherein, described step A includes：

Al, source AN determine to need to carry out the switching between AN according to the routing update message received, and determine corresponding purpose AN;

A2, source AN send handover request message to purpose AN.

Wherein, when being switched between belonging to different PCF AN, described step B includes：

B1, purpose AN are received after the handover request message that source AN is sent, and are sent to purpose PCF and are set up connection request, and the connection set up between purpose AN and purpose PCF；Purpose PCF is registered to PDSN, the connection set up between purpose PCF and PDSN；

B2, PDSN send data to target PCF when PCF requests in source stop sending data and stop sending data to source PCF.

Wherein, described step B2 includes：

B21, when confirm dismounting source AN eat dishes without rice or wine connection when, source PCF to PDSN send stop send data-message, it is desirable to PDSN stop be sent to data；

B22, PDSN receive source PCF and sent to the PDSN stoppings sent after data-message, if also not sending data to purpose PCF, start while stopping and sending data to source PCF to purpose PCF and send data.

Wherein, when being switched between belonging to different PCF AN, described step Sudden B include：

The AN of Β Γ mesh is received after the handover request message that source AN is sent, and is sent to purpose PCF and is set up connection request, and the connection set up between purpose AN and purpose PCF；Purpose PCF is registered to PDSN, the connection set up between purpose PCF and PDSN；

B2, after purpose PCF is connected foundation with PDSN, PDSN sends bi-casting to source AN and indicates that message informing source AN/PCF, PDS will send data to purpose PCF/AN and source AN/PCF simultaneously.

Wherein, described step B 2, in,

When the connection between PCF and PDSN of the PDSN according to presence is defined as switching between AN, then instruction message is broadcast described in transmission.

Wherein, described data include：

Real-time service data and non-real time service data.

Wherein, this method also includes： Source AN receives the bag for not retransmiting real time business after bi-casting is indicated, for the bag of non-real-time service, then continues to send.

Wherein, in addition to：

When terminal can receive data by purpose AN, then purpose AN sends handoff procedure completion message to source AN；

Source AN is received after the message, and the interactive information between the PCF of source, Dry puts its connection between the PCF of source.

Wherein, described step B also includes：

The switching response message that B3, source AN are sent according to purpose AN sends channel assignment message to terminal, and wait after terminal responds the interactive information between the PCF of source to indicate to eat dishes without rice or wine to be connected dismounting, or, without waiting for terminal responds, interactive information indicates to eat dishes without rice or wine to be connected dismounting directly between the PCF of source after transmission channel assignment message.

Wherein, described step B3 includes：

B31, source AN send channel assignment message to terminal, and terminal is switched to purpose AN, and is that terminal distribution manages access terminal identification UATI by purpose AN, completes UATI assignments；

Interactive information sets up purpose AN connection of eating dishes without rice or wine between B32, purpose AN and PCF；Or,

B33, source AN send UATI assignment messages to terminal, and when UATI, which is assigned, to be completed, source AN sends Traffic Channel Assignment message to terminal, and completes channel assignment process；

Interactive information sets up purpose AN connection of eating dishes without rice or wine between B34, purpose AN and purpose PCF.Wherein, described step B includes：

For the switching between the AN under different PCF, it will need to be sent to the data of terminal the purpose PCF while belonging to source PCF and purpose AN belonging to being sent to source AN as packet data service network PDSN.

Wherein, described step B also includes：

It will need to be sent to the data of terminal and be stored in respectively in the corresponding base station system BTS of source AN and purpose AN.

Wherein, this method also includes：

, then will by source AN and source PCF when the procedure failure switched from source AN to purpose AN The data for being sent to terminal are needed to be sent to terminal in handoff procedure.

The present invention, which is also provided, realizes the system switched between activated state AN in a kind of HRPD networks, including source AN, source PCF, purpose AN and purpose PCF and PDSN;

The source AN starts after the handover operation between access network AN, and before the connection that terminal is completed with purpose AN is set up, the connection that purpose AN is set up between packet data service network PDSN, PDSN sends user data to purpose AN/ Packet Control Functions PCF；

After the connection that terminal is completed with purpose AN is set up, purpose AN/PCF sends the data received from PDSN to terminal.

Wherein, the PDSN sends data to target PCF when PCF requests in source stop sending data and stops sending data to source PCF.

Wherein, the PDSN sends bi-casting to source AN and indicates that message informing source AN PCF, PDSN will send data to purpose PCF/AN and source AN/PCF simultaneously after purpose PCF is connected foundation with PDSN.

As seen from the above technical solution provided by the invention, the present invention realizes the direct-cut operation between AN between PCF, between PCF between AN during direct-cut operation, and data are sent to purpose PCF/AN in advance from PDSN；Ensure that terminal can send data from purpose AN or PCF to terminal immediately after completing the connection foundation with purpose AN.So as to improve the continuity of business, time delay is reduced and because of time delay Yin Qi Lost bags.

If in addition, handoff failure, still being sent to switch by source PCF after data, it is to avoid because AN switches Dao Zhi Lost bags.

Or after purpose AN/PCF and PDSN set up and be connected, PDSN sends concurrent configured information to source PCF/AN, and wait is received after the PCF/AN responses of source, PDSN starts simultaneously to target PCF and source PCF while sending data, and purpose PCF Slow deposit the data in handoff procedure.PCF equally cachings in source receive the data after bi-casting is indicated in case rollback after handoff failure, improves reliability.The connection that terminal is completed with purpose AN can send data from purpose AN or PCF to terminal immediately after setting up.

Brief description of the drawings

Fig. 1 is the networking structure schematic diagram of the HRPD networks of the present invention；

Fig. 2 be method of the present invention in PCF between AN between direct-cut operation an embodiment stream Cheng Tu；

Fig. 3 be method of the present invention in PCF between AN between direct-cut operation another embodiment flow chart.

The core of the embodiment present invention is in the processing procedure that AN is switched over, in advance corresponding data message is sent to purpose AN, described data can be specifically stored on purpose AN, it can also be stored on the PCF belonging to purpose AN, or data can also be stored in the corresponding BTS of purpose AN (Base Transceiver Station, Base Transceiver Station）On, thereby may be ensured that handoff procedure terminate after business connectivity.At the same time it can also which the data are sent to source AN/PCF simultaneously, and preserved by source AN/PCF, or the user terminal that can also be stored in data described in the corresponding BTS of source AN can be MS (Mobile Station, mobile station）Deng.

Generally, the networking structure of HRPD networks is as shown in figure 1, in HRPD networks, terminal (Access Terminal, AT) 110 passes through AL and the access network of eating dishes without rice or wine（AN) intercommunication, pass through A8 and A9 interface intercommunications between source AN 120 and PCF 130, PCF 130 and PDSN 140 is by A10 and the interface intercommunications of Al 1, so that AT 110 can obtain the data service that PDSN 140 is sent by AN, PCF 130.

Method of the present invention mainly includes in implementation process：

In the direct-cut operation between AN between PCF, purpose AN and purpose PCF sets up A8, and purpose PCF sets up A10 with PDSN and is connected（A10 is connected as the connection between PCF and PDSN）When, PDSN voluntarily judges whether that sending bi-casting indicates message according to whether there is A10 connections；

When switching between PCF, PDSN after A8 and A10 is set up is completed between purpose AN, purpose PCF and PDSN and all sends data to source PCF and purpose PCF, purpose AN PCF time delay is reduced He Lost bags；PDSN notifies source PCF before data are sent simultaneously, destination AN/PCF can also be connected to data below since having notice, source AN/PCF will not send the data received below to terminal if switching successfully, and only just continue to send the data having not timed out in handoff failure.

Or method of the present invention mainly includes in implementation process： In AN Traffic Channel Assignment is sent to terminal（Or receive the response of the message) ask PDSN to stop to source PCF sending services data and send business datum to target PCF in advance afterwards.

In the processing procedure that the invention described above is provided, PDSN can be determined according to business option, for delay sensitive business, when meeting the requirement of setting for delay requirement, completed when then switching between PCF between purpose AN, purpose PCF and PDSN after A8 and A10 foundation, PDSN also sends data while sending data to source PCF to purpose PCF；

Meanwhile, in method of the present invention, during AN switchings are carried out, to reduce time delay, the BTS that the data that purpose AN is connected to can be sent directly in AN carries out Slow and deposited, and the data that source AN is received are also sent to BTS progress Slow and deposited.

Purpose AN receives the channel assignment completion message or UATI (Unicast of terminal transmission

Access Terminal Identifier, manage access terminal identification）Completion message, purpose AN sends data to terminal immediately.

In the scheme that Fig. 2 is described, source PCF has been sent to terminal can select to stop sending data to save bandwidth to PDSN transmissions Xoff (stopping transmission data) message calls PDSN after Traffic Channel Assignment message（Referring to step 214);It is of course also possible to not send the rollback that Xoff message is easy to handoff failure.

Method of the present invention can meet the real-time service in HRPD networks and the transmission demand of non-real time service.

In actual applications, the invention provides Inter-PCF (interconnection Packet Control Functions）In the case of direct-cut operation between AN processing procedure, i.e., the direct-cut operation processing between AN between different PCF is described below.

The direct-cut operation processing procedure between AN between the Inter-AN/Inter-PCF that the present invention is provided, i.e., different PCF, as shown in Fig. 2 specifically including following steps：

Bu Sudden 21:AT sends routing update message to source AN, including the higher neighboring BS information of signal intensity；

Step 22:Source AN need to carry out direct-cut operation according to routing update message determination, then send handover request message to purpose AN, and the message includes the session information related to AT；

Step 23:Purpose AN receives the checking that message is carried out after handover request message and carries out AT authentication；If being verified, set up A8 with purpose PCF and be connected, and start timer TA8-Setup.Instruction can be increased by wherein setting up A8 message, and instruction request PDSN sends data to purpose PCF in advance.

Step 24:Receive after A9-Setup-A8 message, purpose PCF initiates A10 establishment of connections to PDSN, i.e., send login request message to PDSN, request PDSN sends data to purpose PCF, can also increase message newly and be indicated in advance.

Bu Sudden 25:After A10 connections are set up, PDSN responds All registration reply messages, the i.e.-Registration Reply message of A 11 to purpose PCF；

Step 26:Purpose PCF sets up A8 connections completion, and feedback A9 and A8 interfaces set up connection message, i.e. A9-Connect-A8 message and stop timer TA8-Setup to purpose AN, purpose AN.

Step 27:PDSN sends bi-cast Indication to source PCF, and (bi-casting is indicated）Message, indicates that data will be sent to purpose AN/PCF and source AN/PCF simultaneously by PDSN.

Step 28:PCF is received after bi-cast Indication message to source AN transmission bi-cast Indication, notice source AN still receives the data from PCF, source AN is received after bi-casting instruction, need to continue to send to terminal for receiving non-real-time service data, and the real time traffic data for receiving, then the data received before bi-casting instruction message need to be only sent to terminal；Unless handoff failure, otherwise, source AN is not sent in terminal receives the real time traffic data that bi-casting indicates to receive from PCF after message；

That is, after confirming that source AN receives bi-casting instruction, the packet for indicating that opisthogenesis AN is received is broadcast for receiving the Chinese, wherein, no longer sent for real time traffic data bag to terminal, then continue to send to terminal for non-real-time service packet；

While in this step, it is also an option that response PDSN mechanism, and can also increase acknowledgement mechanism between PCF and AN, to ensure the reliability of signaling transmission.

Step 29:PDS sent bi-casting indicate after can be decided whether according to service attribute to purpose PCF send before to:According to；Forward data all can not also be sent to purpose PCF according to service attribute is unified, purpose PCF preserves the data from PDSN, is sent at once to terminal after target AN is connected foundation with terminal；

Step 210:PDSN has been sent and has sent forward data to source PCF simultaneously after instruction, and the data can be preserved on the PCF of source, source AN can also be sent to always, AN is preserved by source；

Step 211:Purpose AN sends handoff request acknowledgment message to source AN, and the message includes Allocated channel parameters of purpose AN etc.；

Bu Sudden 215:Source AN is received after described handoff request acknowledgment message, and source AN sends channel assignment message to AT in Traffic Channel, indicates that AT is switched to purpose AN;

Step 212:Meanwhile, source AN sends the message for disconnecting and being connected between A9 and AL interfaces to source PCF, that is, sends A9-AL-Disconnected message, makes source PCF stop sending data to source AN;That is, the response of Traffic Channel Assignment message is not to wait for, and the message for disconnecting and being connected between A9 and AL interfaces is directly sent to source PCF, that is, sends A9-AL-Disconnected message, makes source PCF stop sending data to source AN;

Or：

Source AN sends the message for disconnecting and being connected between A9 and AL interfaces to source PCF after receiving the response of Traffic Channel Assignment message, that is, sends A9-AL-Disconnected message, makes source PCF stop sending data to source AN;

Step 213:Source PCF responds the connection confirmation message disconnected between A9 and AL, i.e. A9-AL-Disconnected Ack message to source AN and gives source AN, and stops sending data to source AN；Step 214:Source PCF sends Xoff message to PDSN, that is, stops data and send message, request PDSN stops sending data to source PCF, represents that switching has been performed；

The step is optional, if sending the message, the communication resource of A interfaces can be saved, if not sending the message, although add the occupancy of A interface resources, but if handoff failure, it is ensured that data Bu Hui Lost lose.

Bu Sudden 216:AT is switched to after purpose AN, sends channel assignment completion message to purpose AN;Step 217:Purpose AN sends UATI assignment messages to AT in Traffic Channel, is that AT distributes a new UATI;

Step 218:After AT is received, UATI completion messages are returned to purpose AN in Traffic Channel；Step 219:Switch successfully, the session activation between terminal AT and PDSN, purpose AN sends data to terminal AT；

The step can specifically be performed in any instant after performing step 218, and principle is that The faster the better；

Step 220:Purpose AN sends A9-AL Connected message and indicates that channel has been activated；Step 221：Purpose PCF sends registration message, i.e.-Registration the Request of Al 1 disappear PDSN is ceased, indicates that link has been activated, the response that PDSN is responded to purpose PCF re-injections volume；If step 214 is not carried out or XOff Lost lose, PDSN will stop sending data to source AN/PCF at the moment；

Step 222:Confirmation message, i.e. A9-AL-Connected ACK messages, which are connected, between purpose PCF responses A9 and AL gives purpose AN;

Step 223：Purpose AN sends handoff completion message and gives source AN;

Step 224:Receive after handoff completion message, source AN sends A9-Release-A8 message to source PCF, notify to connect between PCF release A9 and A8 interfaces, meanwhile, on the AN of source, start timer TArel9, discharge A8 links；

Step 225:Source PCF is received after source AN A9-Release-A8 message, and All-Registration Request (registration requests are sent to PDSN）Message, discharges A10 connections；After PDSN release A10 connections, returning All-Registration Reply to source PCF, (registration is responded）Message, source PCF release A10 connection resources；

Step 226:Source PCF discharges A8 connections, and responding A9-Release-A8 Complete to source AN, (Connection Release is completed between A9 and A8）Message, source AN, which is received, stops timer TArel9 after the message.

The processing procedure of step 215,216,217 and 218 of above-mentioned combination Fig. 2 descriptions can also be realized using following specific processing procedure：

Is performed after above-mentioned Bu Sudden 211, performs step 215';

Step 215,：Source AN sends UATI assignment messages to AT in Traffic Channel, is that AT distributes a new UATI, the new UATI is distributed by purpose AN and is carried to source AN by handoff request acknowledgment message;

Step 216,：AT returns UATI completion messages in Traffic Channel to source AN；

Step 217,：Source AN sends channel assignment message to AT in Traffic Channel, is switched to purpose AN;

Step 217 is performed, after, step 212 can be directly performed, step 212 can also be performed after the response message of channel assignment of AT returns is received;

Perform and complete after step 214, perform step 218,；

Step 218,：AT is switched to after purpose AN, and sending channel assignment in access channel completes to disappear Cease purpose AN.

It can select to apply the corresponding processing procedure of above two as needed in actual application.

Present invention also offers another sunset I, a kind of concrete processing procedure of Inter-AN/Inter-PCF direct-cut operations, as shown in figure 3, specifically including following steps：

Step 31：AT sends routing update message to source AN, including the high neighboring BS information of signal intensity；

Step 32:Source AN need to carry out direct-cut operation according to routing update message determination, then send handover request message to purpose AN, and the message includes the session information related to AT；

Step 33:Purpose AN receives the checking that message is carried out after handover request message and carries out AT authentication；If being verified, set up A8 with purpose PCF and be connected.And start timer TA8-Setup.

Step 34:Receive after A9-Setup-A8 message, purpose PCF initiates A10 establishment of connections, i.e. purpose PCF to PDSN transmission registration messages to PDSN；

Step 35:After A10 connections are set up, PDSN responds All-Registration to purpose PCF

Reply (registration responses）Message；

Step 36:Purpose PCF sets up A8 connections completion, and feedback A9-Connect-A8 message to purpose AN, purpose AN stops timer TA8-Setup.

Step 37:Purpose AN sends handoff request acknowledgment message to source AN, and the message includes allocated channel parameters of purpose AN etc.；

After source AN receives described handoff request acknowledgment message, then need to perform step 312, carry out Traffic Channel Assignment processing；It is also desirable to perform step 38, the Dry connected between A9 and AL puts processing, it is of course also possible to after the response message of channel assignment of AT returns is received, perform step 38;

Step 38:Source AN sends A9-AL-Disconnected (disconnecting connection between A9 and AL) to source PCF, notifies source PCF to stop sending data to source AN;

Bu Sudden 39:(connection disconnected between A9 and AL confirms source PCF response A9-AL-Disconnected Ack）Message gives source AN, and stops sending data to source AN；

Step 310:Source PCF sends Xoff message requests to PDSN to be stopped sending data, that is, is stopped Only send data-message, it is desirable to which PDSN stops sending data to source PCF, represents that switching has been performed；

Step 311:PDSN is received to be stopped sending data to source AN ends after the message, and sends data to purpose PCF, and described data can be sent to purpose AN always.

Step 312:Source AN sends channel assignment message to AT in Traffic Channel, indicates that AT is switched to purpose AN;

AT can confirm that assignment processing is completed to the source AN return responses message, but AT responses are optionally operations, are not the step of must performing；

Step 313:AT is switched to after purpose AN, and channel assignment completion message is sent to purpose AN in access channel;

Step 314:Purpose AN sends UATI assignment messages to AT in access channel, is that AT distributes a new UATI;

Step 315:After AT is received, UATI assignment completion messages are returned to purpose AN in Traffic Channel；

Step 316:After handover success, terminal AT, the session activation such as between MS, and PDSN, i.e. terminal can receive data by purpose AN；

The step can be after step 314 any instant perform, principle is that The faster the better；Step 317:Purpose AN sends the message set up and be connected between A9 and AL interfaces to purpose PCF, that is, sends A9-AL Connected message and indicate that channel has been activated；

Bu Sudden 318:Purpose PCF sends All-Registration Request (registration requests）Message indicates that link has been activated to PDSN, and PDSN returns to registration response response message to purpose PCF.

Step 319:Purpose PCF responds A9-AL-Connected ACK and (connects and confirm between A9 and AL）Message gives purpose AN;

Step 320:Purpose AN sends handoff completion message and gives source AN;

Step 321:Source AN is received after handoff completion message, and A9-Release-A8 is sent to source PCF

(connected between release A9 and A8）Message, and start timer TArel9 in local terminal, discharge A8 links；

Step 322:Source PCF is received after source AN A9-Release-A8 message, and All-Registration Request (registration requests are sent to PDSN）Message, request release A10 connections； PDSN Discharge after A10 connections, returning-Registration the Reply of Al 1 to source PCF, (registration is responded）Message, and source PCF release A10 connection resources；

Step 323:After source PCF release A8 connections, responding A9-Release-A8 Complete to source AN, (Connection Release is completed between A9 and A8）Message, source AN stops timer TArel9.

The processing procedure of step 312,313,314 and 315 of above-mentioned combination Fig. 3 descriptions can also implement process realization using following：

Perform after Bu Sudden 37, perform step 312,；

Step 312,：Source AN sends UATI assignment messages to AT in Traffic Channel, is that AT distributes a new UATI, the new UATI is distributed by purpose AN and is carried to source AN by handoff request acknowledgment message;

Step 313,：AT returns UATI assignment completion messages in Traffic Channel to source AN；Step 314,：Source AN sends channel assignment message to AT in Traffic Channel, is switched to purpose

AN;

Step 314 is performed, after, step 38 can be directly performed, step 38 can also be performed after the response message of channel assignment of AT returns is received;

Perform and complete after step 38, perform step 315';

Step 315,：AT is switched to after purpose AN, and channel assignment completion message is sent to purpose AN in access channel.

It can select to apply the corresponding processing procedure of above two as needed in actual application.

In the process step shown in Fig. 2 and Fig. 3, do not limit each and perform Bu Sudden necessarily in strict accordance with the execution of above-mentioned sequencing, be the time that can flexibly determine to start to perform corresponding steps according to actual needs for part operation step therein.For example, the step 319 in step 222 and Fig. 3 in Fig. 2, it is only necessary to after the completion of for terminal AT channel and UATI assignments processing, just can perform the step, and be not limited to perform step Sudden after the connection between A9 and AL is set up.For another example channel and UATI assignment processing procedures in Fig. 2 and Fig. 3, can confirm purpose AN processing corresponding with any time execution that PDSN is set up after connecting, and it is not limited to processing sequential as shown in Figures 2 and 3.

In summary, the present invention realizes the direct-cut operation processing between the AN between PCF.And be A kind of packet loss is provided in HRPD networks less, handover mechanism between the higher AN of reliability.In addition, the description to the embodiment of the method for the present invention more than understands that of the invention also provide realizes the system switched between activated state AN in a kind of HRPD Wang Network, including source AN, source PCF, purpose AN and purpose PCF and PDSN;The source AN starts after the handover operation between access network AN, before the connection that terminal is completed with purpose AN is set up, the connection that purpose AN is set up between packet data service network PDSN, PDSN sends user data to purpose AN/ Packet Control Functions PCF；After the connection that terminal is completed with purpose AN is set up, purpose AN/PCF sends the data received from PDSN to terminal.

Wherein, the PDSN sends data to target PCF when PCF requests in source stop sending data and stops sending data to source PCF.Or, the PDSN sends bi-casting after purpose PCF is connected foundation with PDSN, to source AN and indicates that message informing source AN/PCF, PDSN will send data to purpose PCF/AN and source AN/PCF simultaneously.

It is described above; preferably embodiment only of the invention; but protection scope of the present invention is not limited thereto; any one skilled in the art the invention discloses technical scope in; the change or replacement that can be readily occurred in, should all be included within the scope of the present invention.Therefore, protection scope of the present invention should be defined by scope of the claims.

Claims (15)

1. Claim

   1st, the method switched between activated state AN is realized in a kind of HRPD networks, it is characterised in that including：

   A, determine to need to switch over operation between access network AN, and start handoff procedure；In handoff procedure between B, A, before the connection that terminal is completed with purpose AN is set up, the connection set up between purpose AN and packet data service network PDSN, and send user data from PDSN to purpose AN/ Packet Control Functions PCF；

   C, after terminal completes to set up with purpose AN connection, then the data received from PDSN are sent from purpose AN/PCF to terminal.

   2nd, the method switched between activated state AN is realized in HRPD networks according to claim 1, it is characterised in that described step A includes：

   Al, source AN determine to need to carry out the switching between AN according to the routing update message received, and determine corresponding purpose AN;

   A2, source AN send handover request message to purpose AN.

   3rd, the method switched between activated state AN is realized in HRPD networks according to claim 2, it is characterised in that when being switched between belonging to different PCF AN, described step B includes：

   B1, purpose AN are received after the handover request message that source AN is sent, and are sent to purpose PCF and are set up connection request, and the connection set up between purpose AN and purpose PCF；Purpose PCF is registered to PDSN, the connection set up between purpose PCF and PDSN；

   B2, PDSN send data to target PCF when PCF requests in source stop sending data and stop sending data to source PCF.

   4th, the method switched between activated state AN is realized in HRPD networks according to claim 3, it is characterised in that described step B2 includes：

   B21, when confirm dismounting source AN eat dishes without rice or wine connection when, source PCF to PDSN send stop send data-message, it is desirable to PDSN stop be sent to data；

   B22, PDSN receive source PCF and sent to the PDSN stoppings sent after data-message, if also not sending data to purpose PCF, start while stopping and sending data to source PCF to purpose PCF and send data. 5th, the method switched between activated state AN is realized in HRPD networks according to claim 2, it is characterised in that when being switched between belonging to different PCF AN, described step B includes：

   The AN of Β Γ mesh is received after the handover request message that source AN is sent, and is sent to purpose PCF and is set up connection request, and the connection set up between purpose AN and purpose PCF；Purpose PCF is registered to PDSN, the connection set up between purpose PCF and PDSN；

   B2' is after purpose PCF is connected foundation with PDSN, and PDSN sends bi-casting to source AN and indicates that message informing source AN/PCF, PDSN will send data to purpose PCF/AN and source AN/PCF simultaneously.

   6th, the method switched between activated state AN is realized in HRPD networks according to claim 5, it is characterised in that described step B 2, in,

   When the connection between PCF and PDSN of the PDSN according to presence is defined as switching between AN, then sends the bi-casting and indicate message.

   7th, the method switched between activated state AN is realized in HRPD networks according to claim 6, it is characterised in that described data include：

   Real-time service data and non-real time service data.

   8th, the method switched between activated state AN is realized in the HRPD networks according to claim, it is characterised in that this method also includes：

   Source AN receives the bag for not retransmiting real time business after bi-casting is indicated, for the bag of non-real-time service, then continues to send.

   9th, the method switched between activated state AN is realized in the HRPD networks according to any one of claim 1 to 8, it is characterised in that also include：

   When terminal can receive data by purpose AN, then purpose AN sends handoff procedure completion message to source AN；

   Source AN is received after the message, and the interactive information between the PCF of source, Dry puts its connection between the PCF of source.

   10th, the method switched between activated state AN is realized in the HRPD networks according to any one of claim 1 to 8, it is characterised in that described step B also includes：

   The switching response message that B3, source AN are sent according to purpose AN sends channel assignment to terminal Message, and wait after terminal responds the interactive information between the PCF of source to indicate to eat dishes without rice or wine be connected dismountings, or, without waiting for terminal responds, interactive information instruction eats dishes without rice or wine to be connected dismounting directly between the PCF of source after transmission channel assignment message.

   11st, the method switched between activated state AN is realized in HRPD networks according to claim 10, it is characterised in that the Bu Sudden B3 include：

   B31, source AN send channel assignment message to terminal, and terminal is switched to purpose AN, and is that terminal distribution manages access terminal identification UATI by purpose AN, completes UATI assignments；

   Interactive information sets up purpose AN connection of eating dishes without rice or wine between B32, purpose AN and PCF；Or ^ ",

   B33, source AN send UATI assignment messages to terminal, when UATI, which is assigned, to be completed, source

   AN sends Traffic Channel Assignment message to terminal, and completes channel assignment process；

   Interactive information sets up purpose AN connection of eating dishes without rice or wine between B34, purpose AN and purpose PCF.

   12nd, the method switched between activated state AN is realized in HRPD networks according to claim 1, it is characterised in that described step B includes：

   For the switching between the AN under different PCF, it will need to be sent to the data of terminal the purpose PCF while belonging to source PCF and purpose AN belonging to being sent to source AN as packet data service network PDSN.

   13rd, the method switched between activated state AN is realized in HRPD networks according to claim 12, it is characterised in that described step B also includes：

   It will need to be sent to the data of terminal and be stored in respectively in the corresponding base station system BTS of source AN and purpose AN.

   14th, the method switched between activated state AN is realized in HRPD networks according to claim 12, it is characterised in that this method also includes：

   When the procedure failure switched from source AN to purpose AN, then by source AN and source PCF the data for being sent to terminal will be needed to be sent to terminal in handoff procedure.

   15th, the system switched between activated state AN, including source AN, source PCF, purpose AN and purpose PCF and PDSN are realized in a kind of HRPD networks;Characterized in that,

   The source AN starts after the handover operation between access network AN, before the connection that terminal is completed with purpose AN is set up, the connection that purpose AN is set up between packet data service network PDSN, PDSN sends user data to purpose AN/ Packet Control Functions PCF；

   After the connection that terminal is completed with purpose AN is set up, purpose AN/PCF sends the data received from PDSN to terminal.

   16th, the system switched between activated state AN is realized in HRPD Wang Network according to claim 15, it is characterised in that the PDSN sends data to target PCF when PCF requests in source stop sending data and stops sending data to source PCF.

   17th, the system switched between activated state AN is realized in HRPD networks according to claim 15, it is characterized in that, the PDSN is after purpose PCF is connected foundation with PDSN, bi-casting, which is sent, to source AN indicates that message informing source AN/PCF, PDSN will send data to purpose PCF/AN and source AN/PCF simultaneously.