CN1859728A - Method for realizing soft switching and conversation shift between excited state AN in network - Google Patents
Method for realizing soft switching and conversation shift between excited state AN in network Download PDFInfo
- Publication number
- CN1859728A CN1859728A CNA2005100858649A CN200510085864A CN1859728A CN 1859728 A CN1859728 A CN 1859728A CN A2005100858649 A CNA2005100858649 A CN A2005100858649A CN 200510085864 A CN200510085864 A CN 200510085864A CN 1859728 A CN1859728 A CN 1859728A
- Authority
- CN
- China
- Prior art keywords
- source
- target
- data
- message
- activated state
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Images
Landscapes
- Mobile Radio Communication Systems (AREA)
Abstract
The present invention relates to a network active state AN soft switching and conversation migrant implementation method. Said invention mainly includes active state source access network AN determining request to make switching operation, source AN according to user terminal sent route updating message to make information interaction with target AN, and establishing communication linkage between source AN with target AN, including signaling and service connection; based established communication linkage to realize soft switching processing and conversational migration processing between source AN and target AN. Therefore said invention realizes active state soft switching between HRPD system AN and PCF, through conversation migration smoothing migration terminal session to target AN.
Description
Technical field
The present invention relates to network communications technology field, relate in particular in a kind of network the implementation method of soft handover and conversation shift between the activated state AN.
Background technology
Along with development of Communication Technique, in order to solve the bottleneck problem on the air interface in the cdma system, 3GPP2 (International Standards Organization of 3G (Third Generation) Moblie) has issued the standard of HRPD (HRPD-HighRate Packet Data, HRPD (high rate packet data)) network technology.Its main purpose is to improve the message transmission rate of wave point, and with respect to the 153.6kbit/s of cdma20001x, the HRPD technology can provide forward data rate up to 2.4Mbit/s.
In the HRPD network, HRPD has aloft adopted new modulation technique and has increased methods such as data rate control, optimizing scheduling and time division multiplexing on the interface, makes that the message transmission rate on the air interface is greatly improved.The HRPD technology can go up at a CDMA carrier frequency (1.25MHz) and adopt special-purpose data channel to support high-speed packet data service, and the forward direction peak data rate can reach 2.4576Mbit/s, oppositely supports unique user peak data rate 153.6kbit/s.
When carrying out the HRPD network design, need independently carrier frequency support HRPD.This just makes when user terminal is mobile in the HRPD network, may be moved under another AN by an AN in the HRPD network, at this moment, need carry out by source AN to the hand-off process target AN.
At present, in the 3GPP2 standard, only support the switching of Dormant (dormancy) attitude between the AN (Access Network), corresponding handoff procedure is specially: carry out data service when terminal in HRPD (HRPD (high rate packet data)) network and move to the sub-district when covering the edge zone, need switch to another AN and carry on data service, this moment, system switched to Dormant attitude with Packet data service by activated state at source AN, switched to target AN in the Dormant attitude then; After entering into target AN, system switches to activated state with Packet data service by the Dormant attitude again at target AN.
Switching mode between above-mentioned AN can realize the handover operation to target AN by source AN.But, require than higher data service for real-time, as VoIP (IP-based voice), Video Phone (video telephone), PTT (button is promptly logical), Streaming Media etc., cause service disconnection in the above-mentioned handoff process probably if adopt, have a strong impact on the use of user business.
That is to say that the implementation method of dormant state switching between the AN that present standard provides, between PCF in handoff procedure, needs to discharge the PPP (point-to-point protocol) that is using and connects, PDSN need be the new PPP connection of purpose network allocation.In redistributing the PPP connection procedure, on the one hand, newly assigned PPP connects and may make customer service interrupt because reasons such as problem of resource cause the assigning process failure; On the other hand, need the regular hour, therefore, also will cause bigger time delay influence the current business of user because PDSN rebulids a PPP connection.
For this reason, need provide and to guarantee between AN, can guarantee in the handoff procedure professional unbroken handoff process.Yet, only realized at present hand-off process flow process between the AN of above-mentioned dormant state in the standard, and activated state switching processing flow process between the also undefined HRPD AN of system, between PCF.
Summary of the invention
In view of above-mentioned existing in prior technology problem, the implementation method that the purpose of this invention is to provide in a kind of network soft handover and conversation shift between the activated state AN, when realizing soft handover, also realized corresponding conversation shift, with the continuity of assurance user terminal business when striding AN, PCF switching, thus the reliability of raising service communication.
The objective of the invention is to be achieved through the following technical solutions:
The invention provides in a kind of network the implementation method of soft handover between the activated state AN, comprising:
A, when the source of activated state Access Network AN determines to carry out handover operation, between source AN and target AN, establish a communications link;
B, between source AN and target AN, realize the soft handover processing based on communicating to connect of setting up.
Described steps A comprises:
Carry out information interaction between routing update message that source AN sends according to user terminal and the target AN, and set up communicating to connect between source AN and the target AN.
Described communicating to connect comprises:
The signaling of setting up based on the signaling interface agreement connects, and connects based on the business that the business interface agreement is set up, the direct or indirect connection between the described base station that is connected to source AN and target AN.
Described steps A specifically comprises:
A1, user terminal send routing update message to source AN;
A2, source AN send handoff request message to target AN;
A3, purpose AN send the request message that establishes a communications link to source AN side;
A4, source AN set up communicating to connect between source AN and the target AN according to the described request message that establishes a communications link.
Described steps A 3 comprises:
Purpose AN sends a request message that establishes a communications link to source AN side at least, comprises the information of a sub-district of needs interpolation in the described message at least.
Method of the present invention also comprises:
After source AN finishes the described foundation that communicates to connect, then return acknowledge message to purpose AN;
And described steps A 3 also comprises:
After purpose AN sends the described request message that establishes a communications link, start timer, when receiving described acknowledge message, stop this timer, during timer expiry, confirm then that respective communication connects to set up the processing procedure failure.
Described steps A 3 also comprises:
After the affirmation message that the source AN of receiving sends, then target AN sends switching request acknowledgement message to source AN; When carrying a plurality of cell information in the switching request acknowledgement message, comprise sub-district and/or the not successful cell information that establishes a communications link with source AN that success and source AN establish a communications link in the then described message.
Described steps A 2 also comprises:
Source AN is after target AN sends handoff request message, start timer, after receiving the switching request acknowledgement message that target AN sends, then stop this timer, when timer expiry, if do not receive described switching request acknowledgement message yet, then source AN resends described handoff request message.
Described steps A 4 also comprises:
Source AN upgrades Active Set according to the informing user terminal of setting up that communicates to connect, and the sub-district that connects is added in the Active Set.
Method of the present invention also comprises:
Determine sub-district in the needs deletions user terminal Active Set according to the routing update message of user terminal, then corresponding sub-district in the deletion Active Set under the indication of source AN;
When source AN determines respective cell in the user terminal deletion Active Set, then and carry out information interaction, communicating to connect between source of release AN and the respective cell between the purpose AN.
The present invention also provides the method that realizes conversation shift in a kind of network between the activated state AN, comprising:
C, between source AN that determines to switch behaviour and target AN, establish a communications link;
D, the session of user terminal is moved to target AN by source AN according to communicating to connect between source AN that sets up and the target AN.
Described step D specifically comprises:
D1, source AN send the conversation shift request message to target AN, are carrying the parameter information of at least one session that need move in the message;
After D2, target AN receive described message, set up its with PDSN between be connected, and receive the data that PDSN sends, and when transmitting based on IP by the connection of setting up, after target AN receives the conversation shift request message, must set up being connected of target AN and target BS earlier;
D3, target AN handle receiving data according to the parameter information of the session that receives, and and terminal between carry out data interaction.
The parameter information of described session comprises:
Session state information, and personal attribute information, PDSN address, anchor PDSN address, anchor P-P address and the radio link protocol RLP information of session support.
Described step D2 comprises:
Connect between target AN foundation and the target P CF;
Target P CF set up with PDSN between be connected, connect sets up successfully after, PDSN stops to source PCF/AN transmission data, and last packet that is sent to source PCF/AN is identified, simultaneously, to target P CF/AN transmission data; When PDSN to source PCF request discharge its with source PCF between when being connected, PCF need in source all send to data in buffer after the AN of source, to source AN initiate its with source AN between the release that is connected.
Described D2 comprises:
The RLP information that D21, target AN send according to source AN is determined and the metadata cache of packet sequence number that sequence number in the reverse data that receives is received more than or equal to hope, other data that receive then send to source AN and handle, and simultaneously at least one conversation shift request acknowledge message the sequence number of first data of at least one RLP stream of target AN buffer memory are sent to the datum mark that source AN switches as data.
Described D21 also comprises:
The data that source AN sends target AN send to PDSN after sorting and handling;
During the sequence number of the RLP data that the datum mark of the reverse data migration of determining as target AN receives less than current AN expectation, after source AN handles datum mark data before, data after the datum mark that has received are transferred to target AN handle, perhaps retransmit this part data by target AN requesting terminal.
Described D21 also comprises:
As source AN target AN is sent to its at least one RLP stream data to PDSN send finish after, target AN sends its data in buffer to PDSN.
Described step D also comprises:
Source AN receives after switching that target AN sends begins message, continues to handle forward data that it does not send as yet, finishes up to transmission;
Source AN sends the message that at least one its forward data is sent completely to target AN, carrying the corresponding RLP sequence number of at least one RLP stream that target AN begins to send data in the message, and target AN begins to send forward data.
Described step D also comprises:
When target AN receives the request retransmission data that terminal is sent, and definite corresponding data is cached in source AN, and then target AN is to source these data of AN request retransmission.
The business of switching between described source AN and the target AN comprises:
Real-time service and/or non-real time service.
As seen from the above technical solution provided by the invention, the present invention has realized activated state soft handover between the AN of HRPD system, between PCF, keeps professional continuity; By conversation shift, terminal is taken over seamlessly target AN.
Among the present invention,, can improve success rate for switching, avoid table tennis to switch by realizing activated state soft handover between the HRPD AN of system, between PCF.By realizing activated state conversation shift between the HRPD AN of system, between PCF, target AN is moved in session.The present invention specifically provides when activated state the conversation shift between soft handover between the AN under the Inter-PCF situation and activated state AN.Handover mechanism between a kind of AN of user experience of the VoIP of raising business is provided.
Description of drawings
Fig. 1 sets up the processing procedure schematic diagram that is connected between source AN and the target AN;
The processing procedure schematic diagram of Fig. 2 for being connected between source of release AN and the target AN;
Fig. 3 realizes switching processing process schematic diagram between the AN for the connection of setting up among Fig. 1.
Embodiment
Core of the present invention is to increase activated state soft handover and conversation shift between the new traffic signaling interface realization AN between by source AN and target AN; Source AN can send to terminal with service-data oriented base station by target AN during by this interface soft handover, realizes the merging processing of reverse traffic data in addition at source AN by this interface.The present invention also comprises by level and smooth conversation shift the conversation shift of terminal to target AN, and the Active Set that specifically can be chosen in terminal carries out conversation shift when all belonging to target AN to be handled.
Concrete processing procedure is: when source AN determines that according to routing update RouteUpdate message needs add Active Set with the pilot tone of target AN, then send handoff request to target AN, target AN receive set up behind this request message with source AN between service link and distribute interface-free resources, notify terminal that target AN pilot tone is joined in the Active Set by source AN then.Simultaneously, when source AN according to RouteUpdate message determine needs with the pilot tone of target AN when Active Set is deleted, then the AN first Active Set of new terminal more in source sends the request of deletion pilot tone to target AN then, target AN then discharge and source AN between link and corresponding interface-free resources.
After setting up corresponding the connection between source AN and the target AN, the session of terminal is moved to target AN by source AN.Promptly, target AN is moved in session by realizing activated state conversation shift between the HRPD AN of system, between PCF.When the Active Set that specifically can be chosen in terminal all belongs to target AN and terminal when always being in activated state, being judged by source AN needs target AN is moved in session.
The present invention has realized activated state soft handover between the AN of HRPD system, between PCF, keeps professional continuity; By conversation shift, with the terminal session smooth migration to target AN.
The present invention sets up corresponding business and signaling interface between source AN and purpose AN in the specific implementation process, by realizing the soft handover between source AN and the purpose AN accordingly.
, will at first describe with signaling interface below increasing business between source AN and the purpose AN for this reason, wherein:
(1) described signaling interface protocol stack can for:
IOS Application, input-output system is used;
SCTP or TCP, SCTP or transmission control protocol;
IP, the IP agreement;
L2, two layers;
Physical Layer, physical layer;
(2) described business interface protocol stack can for:
User Traffic, user traffic flow;
RTP/UDP or TCP, RTP/User Datagram Protoco (UDP) or transmission control protocol;
IP, Internet protocol;
Link Layer, link layer;
Physical Layer, physical layer.
Among the present invention, the source AN that sets up can be that source AN directly links to each other with target BS with the A3 ' service link between the purpose AN, when transmitting based on IP, carry IP address and port numbers that target can be base station in A3 '-Connect message this moment, also can be IP address and the port numbers of target AN, source AN links to each other by target AN with target BS.Also can be based on ATM (asynchronous transfer mode) transmission;
Among the present invention, when source AN sets up a plurality of sub-district to target AN request, can send a handoff request message and can ask to set up a plurality of sub-districts; Also can send many handoff request message, wherein every message request is set up a sub-district.When request in the handoff request message need be set up a plurality of sub-district, then target AN can send a plurality of A3 '-Connect message interpolation sub-district, and wherein every message is added a sub-district, also can send an A3 '-Connect message and add a plurality of sub-districts.When the sub-district of purpose AN provides when service, source AN with forward data by and target AN between business interface be forwarded to base station under the purpose AN or source AN by purpose AN forward data directly sent to base station under the purpose AN, thereby send the data to terminal.
Among the present invention, the reverse data for terminal sends then merges processing at source AN, and the A3 ' business interface that reverse data is passed through of purpose AN sends to source AN processing.
The present invention goes for real-time service and non-real time service in concrete application process.
Among the present invention, illustrate at first by setting up the traffic signaling interface between source AN and the target AN and realize the processing procedure of soft handover between the AN that as shown in Figure 1, corresponding processing procedure specifically comprises:
Step 11:AT sends routing update Route Update message to source AN, comprising the higher information of adjacent cells of signal strength signal intensity;
Step 12: source AN is according to the neighboring BS relationship that disposes in routing update message and the AN, definite need carry out the address of soft handover and target AN, send handoff request message to target AN, request target AN distributes one or more local resources to support current business, and loaded information comprises in the described handoff request message: purpose cell ID, terminal iidentification, carrier frequency information;
After sending this handoff request message, source AN starts timer T
A7 '-horeqIf timer expiry is not received response message yet and is then retransmitted this handoff request message;
After step 13: target AN receives handoff request message, send A3 '-Connect message to source AN and set up one to many professional connections of A3 ';
If when needing to distribute a plurality of sub-district in the handoff request message, then target AN need send a plurality of A3 '-Connect message; Switch and comprised TrafficChannelAssignment (channel assignment) message relevant parameter, professional terrestrial links sign in this message, work as A3 ' business interface and transmit based on IP, then this message should comprise IP address, the port numbers of target BTS (base station);
After sending this message, target AN starts timer Tconn3 ';
Step 14: after source AN finishes that A3 ' connect to set up or increased the sub-district in existing A3 ' connects, then return A3 '-Connect Ack (A3 ' connect and confirm) message to target AN; Comprised the address information of source AN side in this message, when transmitting, then comprised IP address and port numbers, then comprised the terrestrial links sign when transmitting based on ATM based on IP; Target AN stops timer Tconn3 ' after receiving this message, works as timer expiry, does not receive described message, thinks that then respective cell adds the processing procedure failure;
Step 15: mutual IDLE (free time) frame between source AN and the target AN, adjust link synchronization;
Step 16: target AN sends handoff request acknowledgment message to source AN;
Receive that this message opisthogenesis AN stops timer T
A7 '-horeqWhich sub-district indication source AN adds successfully in this message, and which sub-district is added failure;
Step 17: source AN sends his TrafficChannelAssignmen message to terminal, and indicating terminal upgrades Active Set;
Step 18: terminal is upgraded after the Active Set, finishes TrafficChannelComplete message to source AN or while to source AN and target AN response service channel assignment;
Among the present invention, also comprise in the processing procedure to sub-district in the deletion Active Set, as shown in Figure 2, specifically comprise following processing procedure:
Step 21:AT sends routing update message to source AN, and the adjacent area pilot frequency intensity dies down;
Step 22: source AN sends his TrafficChannelAssignmen message to terminal, the adjacent area pilot tone in the indicating terminal deletion Active Set;
Step 23: terminal responds TrafficChannelComplete message after upgrading Active Set;
Step 24: source AN sends the sub-district that A7 '-Drop Target message request discharges appointment; Indication needs the cell ID of release in this message;
Step 25: target AN sends A3 '-Remove message to source AN after discharging corresponding resource;
Step 26: source AN sends A3 '-Remove Ack message to target AN after discharging corresponding resource.
Among the present invention, also provide the specific implementation of the conversation shift processing procedure between the activated state AN of Inter-AN/Inter-PCF.When source AN determined that the Active Set of terminal all belongs to target AN and terminal and is in other reasonses such as activated state or capacity limit and needing causes the initiation session migration, then source AN seamlessly switched to target AN to the migration of target AN initiation session with session.
In the process of conversation shift, PDSN successfully sets up with target AN and stops after A8, A10 are connected sending data to source AN, and beginning sends forward data to target AN;
Source AN and target AN determine that the point of reverse data migration is that benchmark moves with certain reverse data frame promptly, send to PDSN after being handled by source AN for the data before the benchmark, and the data after the benchmark are handled by target AN; During the sequence number of the RLP data that the datum mark of the reverse data migration of determining as target AN receives less than current AN expectation, after source AN handles datum mark data before, data after the datum mark that has received can be transferred to target AN handles, if source AN is not moved to target AN with the data after the datum mark, then retransmit this part data by target AN requesting terminal; For real-time service, if source AN is not moved to target AN with the data after the datum mark, then this part data will be dropped;
Indicating target AN can send reverse data to PDSN after source AN sends to PDSN with the revert all data; For forward data, the data that do not send as yet before source AN will switch send the forward data from PDSN that the back notification target AN that finishes can handle buffer memory.
In the conversation shift process,, then can move each RLP example simultaneously, perhaps move each RLP example respectively if when a plurality of RLP example is arranged.
Below in conjunction with Fig. 3 the specific implementation of the method for the invention is described:
Step 31: if when the Active Set of terminal belongs to T-AN (target AN) fully, then S-AN (source AN) decision is moved to T-AN with session;
Step 32:S-AN Lock Session information does not promptly allow the configuration parameter information of session is made amendment in the conversation shift process;
Step 33:S-AN sends conversation shift request message requests conversation shift to T-AN; This message has comprised the session state information of current HPRD session and the personalities of all supports (personal attribute information), PDSN address, anchor PDSN (anchor PDSN) address, anchor P-P (anchor P-P) address, Active Set parameter etc., this message also comprises RLP (radio link protocol) information, be that packet sequence number V (N), the receiving terminal of receiving terminal request retransmission wishes that each parameter of packet sequence number V (R) that receives all carries by the conversation shift request message, this message can comprise the information to many RLP examples.
Set up direct-connected situation between source AN and the target BS if belong to, target AN needs the terrestrial links carrying between first foundation and target BS and the former AN.After the terrestrial links carrying between target BS and source AN foundation and the target AN data are transmitted by target AN.
Step 34:T-AN sends A9-Setup-A8 (setting up A9-A8 connects) message and gives PCF, and request is set up A8 and connected;
Step 35:T-PCF (target P CF) sends A11-Registration Request (A11 interface register requirement) message to PDSN, and request is set up A10 and connected; PDSN sends A11-Registration Reply (A11 interface registration response) message and gives T-PCF, and the A10 connection is set up successfully;
At this moment, PDSN can begin to send data to T-PCF, and stops to send data but PDSN can receive the reverse data from S-PCF to S-PCF (source PCF);
Step 36:T-PCF sends A9-Connect-A8 (A9-A8 connects foundation) message and gives T-AN;
Step 37:PDSN begins to send data to T-AN, and stops to send data to S-AN;
Simultaneously, to need to identify these data in the GRE of last data that sends to S-AN (routed encapsulation) head be last data to PDSN; Send the signaling indication simultaneously and no longer send forward data to source AN/PCF.
Step 38:T-AN begins to carry out the merging processing of reverse data; After merge handling, T-AN detects the SEQ (sequence number) of the reverse RLP data that receive, when SEQ＞=V (R), then definite described data need be handled on T-AN, and by these data of T-AN buffer memory, otherwise, by T-AN the RLP data are sent to S-AN and handle;
T-AN also needs the SEQ of first RLP data of buffer memory is noted, and is labeled as HO_SEQ (switching sequence number), then HO_SEQ＞=V (R);
Step 39:T-AN sends conversation shift and begins message to S-AN indication beginning conversation shift;
Described conversation shift begins to comprise HO_SEQ in the message, only need handle the reverse data of reverse SLP data SEQ＜HO_SEQ when being used to indicate S-AN to handle reverse data;
Step 310: after receiving that sending conversation shift begins message, S-AN continues to handle the forward data that does not send as yet, up to handling the forward data that last does not send as yet;
Simultaneously, the reverse data that S-AN will receive from SEQ＜HO_SEQ of the SLP of T-AN, sorting according to SEQ sends to PDSN then;
After step 311:S-AN finishes the forward data transmission, send the forward data migration to T-AN and finish message, the indication forward data sends and finishes, and carries RLP sequence number V (S) next to be sent in this message, sends the RLP start sequence number of forward data as T-AN;
T-AN returns ACK message to S-AN after receiving this message;
Need to prove that when target AN receives the request retransmission data that terminal is sent, and definite corresponding data is cached in source AN, then target AN is to source these data of AN request retransmission; The mode that described definite corresponding data is cached in source AN is: source AN sends when indicating target AN begins to send data after the forward data, tell target AN that it begins to send the RLP sequence number V (S) of data, when target AN sends forward data, if the sequence number of the data that terminal request retransmits is less than V (S), then the data that need retransmit are at source AN, otherwise the data that retransmit are at target AN;
If during the data that source AN need retransmit, source AN sends to target BS with packaged RLP data, thereby data are sent to terminal; Perhaps source AN sends the data to target AN, by re-sending to target BS behind the target AN encapsulation of data;
On target AN, the RLP sequence number of the data that the datum mark that reverse data switches may receive less than the current hope of source AN, in this case, after source AN handles datum mark data before, untreated data after the datum mark can be transferred to target AN and handle, perhaps retransmit this part data by target AN requesting terminal;
For real-time service, directly abandon or transfer to object-side processing during the RLP sequence number of the data that the datum mark that reverse data switches receives less than the current hope of source AN;
In addition, among the present invention, do not have the disposition of re-transmission for real-time service, target is surveyed and is begun to send forward data after source is handled forward data, does not need request source to stress to pass data.
Step 312:T-AN begins to send data to terminal after receiving that message is finished in the forward data migration;
Step 313:S-AN sends the back that finishes with reverse data and finishes message to the migration of T-AN transmission reverse data, and the indication reverse data sends and finishes;
In the conversation shift process, the reverse data before the datum mark that S-AN also needs reverse data is switched sends to PDSN, and after being sent completely, sending the reverse data migration to T-AN and finish message;
That is to say, S-AN is after its forward data or reverse data that need handle of finishing dealing with, then need to send the migration of corresponding forward data or reverse data and finish message to T-AN, the time that two kinds of data processing are finished there is no fixing sequencing, and the sequential relationship shown in Fig. 3 only is an instantiation;
After step 314:T-AN received that message is finished in the reverse data migration, beginning sent reverse data to PDSN;
Step 315:T-AN sends the UATI assignment message to terminal, distributes new UATI;
Terminal is responded UATIComplete message explanation UATI assignment success;
Step 316: all move to target AN when T-AN determines session, and need be by source AN data retransmission the time, T-AN sends the request of A3 ' service link release message to S-AN and discharges A3 ' service link;
Step 317:S-AN discharges resource, responds to T-AN and answers message;
Step 318:T-AN release session configuration can be made amendment to the configuration information of session;
Step 319:PDSN determines that no longer sending A11-Registration Update (A11 interface register update) message request to S-PCF after source PCF sends forward data discharges the A10 connection; S-PCF responds A11-Registration Acknownledge (accreditation verification of A11 interface) message;
Step 320: when S-PCF after S-AN sends data in buffer, S-PCF sends A9-Disconnect-A8 (remove A9-A8 connect) message request to S-AN and discharges A8 and connect;
After step 321:S-AN receives the bag that carries last forward data bag indication or receives the release request of PCF transmission, the forward data of buffer memory sent to T-AN finish and after reverse data also all sends to PDSN, then send A9-Release-A8 message and initiate A8 and connect and discharge to T-AN;
Step 322:S-PCF sends A11-Registration Request (A11 interface register requirement) message and requires to discharge the A10 connection; PDSN sends A11-Registration Reply (A11 interface registration response) message and gives S-PCF, indicates A10 to connect and discharges;
Step 323:S-PCF sends A9-Release-A8 Complete (A9-A8 connects release to be finished) message and gives S-AN, and A8 connects release;
Step 324: bring into use new UATI when T-AN determines AT, then send UATI to S-AN and discharge Indication message, indication S-AN discharges original UATI;
S-AN responds Ack message, and this moment, S-AN can distribute to other-end with original UATI.
Among the present invention, move to target AN fully when going up, after the data at source that need to retransmit are all transferred to target side, then being connected between source AN and the target AN discharged when the session on the AN of source;
In sum, as can be seen, realization of the present invention provides a kind of not packet loss, and realizes the mechanism of soft handover and migration between the higher activated state AN of handover success rate.
The above; only for the preferable embodiment of the present invention, but protection scope of the present invention is not limited thereto, and anyly is familiar with those skilled in the art in the technical scope that the present invention discloses; the variation that can expect easily or replacement all should be encompassed within protection scope of the present invention.Therefore, protection scope of the present invention should be as the criterion with the protection range of claim.
Claims (20)
1, the implementation method of soft handover between the activated state AN in a kind of network is characterized in that, comprising:
A, when the source of activated state Access Network AN determines to carry out handover operation, between source AN and target AN, establish a communications link;
B, between source AN and target AN, realize the soft handover processing based on communicating to connect of setting up.
2, the implementation method of soft handover between the activated state AN in the network according to claim 1 is characterized in that described steps A comprises:
Carry out information interaction between routing update message that source AN sends according to user terminal and the target AN, and set up communicating to connect between source AN and the target AN.
3, the implementation method of soft handover between the activated state AN in the network according to claim 1 is characterized in that described communicating to connect comprises:
The signaling of setting up based on the signaling interface agreement connects, and connects based on the business that the business interface agreement is set up, the direct or indirect connection between the described base station that is connected to source AN and target AN.
4, according to the implementation method of soft handover between the activated state AN in claim 1, the 2 or 3 described networks, it is characterized in that described steps A specifically comprises:
A1, user terminal send routing update message to source AN;
A2, source AN send handoff request message to target AN;
A3, purpose AN send the request message that establishes a communications link to source AN side;
A4, source AN set up communicating to connect between source AN and the target AN according to the described request message that establishes a communications link.
5, the implementation method of soft handover between the activated state AN in the network according to claim 4 is characterized in that described steps A 3 comprises:
Purpose AN sends a request message that establishes a communications link to source AN side at least, comprises the information of a sub-district of needs interpolation in the described message at least.
6, the implementation method of soft handover between the activated state AN in the network according to claim 4 is characterized in that this method also comprises:
After source AN finishes the described foundation that communicates to connect, then return acknowledge message to purpose AN;
And described steps A 3 also comprises:
After purpose AN sends the described request message that establishes a communications link, start timer, when receiving described acknowledge message, stop this timer, during timer expiry, confirm then that respective communication connects to set up the processing procedure failure.
7, the implementation method of soft handover between the activated state AN in the network according to claim 6 is characterized in that described steps A 3 also comprises:
After the affirmation message that the source AN of receiving sends, then target AN sends switching request acknowledgement message to source AN; When carrying a plurality of cell information in the switching request acknowledgement message, comprise sub-district and/or the not successful cell information that establishes a communications link with source AN that success and source AN establish a communications link in the then described message.
8, the implementation method of soft handover between the activated state AN in the network according to claim 7 is characterized in that described steps A 2 also comprises:
Source AN is after target AN sends handoff request message, start timer, after receiving the switching request acknowledgement message that target AN sends, then stop this timer, when timer expiry, if do not receive described switching request acknowledgement message yet, then source AN resends described handoff request message.
9, the implementation method of soft handover between the activated state AN in the network according to claim 4 is characterized in that described steps A 4 also comprises:
Source AN upgrades Active Set according to the informing user terminal of setting up that communicates to connect, and the sub-district that connects is added in the Active Set.
10, the implementation method of soft handover between the activated state AN in the network according to claim 4 is characterized in that this method also comprises:
Determine sub-district in the needs deletions user terminal Active Set according to the routing update message of user terminal, then corresponding sub-district in the deletion Active Set under the indication of source AN;
When source AN determines respective cell in the user terminal deletion Active Set, then and carry out information interaction, communicating to connect between source of release AN and the respective cell between the purpose AN.
11, realize the method for conversation shift in a kind of network between the activated state AN, it is characterized in that, comprising:
C, between source AN that determines to switch behaviour and target AN, establish a communications link;
D, the session of user terminal is moved to target AN by source AN according to communicating to connect between source AN that sets up and the target AN.
12, realize the method for conversation shift in the network according to claim 11 between the activated state AN, it is characterized in that described step D specifically comprises:
D1, source AN send the conversation shift request message to target AN, are carrying the parameter information of at least one session that need move in the message;
After D2, target AN receive described message, set up its with PDSN between be connected, and receive the data that PDSN sends, and when transmitting based on IP by the connection of setting up, after target AN receives the conversation shift request message, must set up being connected of target AN and target BS earlier;
D3, target AN handle receiving data according to the parameter information of the session that receives, and and terminal between carry out data interaction.
13, realize the method for conversation shift in the network according to claim 12 between the activated state AN, it is characterized in that the parameter information of described session comprises:
Session state information, and personal attribute information, PDSN address, anchor PDSN address, anchor P-P address and the radio link protocol RLP information of session support.
14, realize the method for conversation shift in the network according to claim 12 between the activated state AN, it is characterized in that described step D2 comprises:
Connect between target AN foundation and the target P CF;
Target P CF set up with PDSN between be connected, connect sets up successfully after, PDSN stops to source PCF/AN transmission data, and last packet that is sent to source PCF/AN is identified, simultaneously, to target P CF/AN transmission data; When PDSN to source PCF request discharge its with source PCF between when being connected, PCF need in source all send to data in buffer after the AN of source, to source AN initiate its with source AN between the release that is connected.
15, realize the method for conversation shift in the network according to claim 12 between the activated state AN, it is characterized in that described D2 comprises:
The RLP information that D21, target AN send according to source AN is determined and the metadata cache of packet sequence number that sequence number in the reverse data that receives is received more than or equal to hope, other data that receive then send to source AN and handle, and simultaneously at least one conversation shift request acknowledge message the sequence number of first data of at least one RLP stream of target AN buffer memory are sent to the datum mark that source AN switches as data.
16, realize the method for conversation shift in the network according to claim 15 between the activated state AN, it is characterized in that described D21 also comprises:
The data that source AN sends target AN send to PDSN after sorting and handling;
During the sequence number of the RLP data that the datum mark of the reverse data migration of determining as target AN receives less than current AN expectation, after source AN handles datum mark data before, data after the datum mark that has received are transferred to target AN handle, perhaps retransmit this part data by target AN requesting terminal.
17, realize the method for conversation shift in the network according to claim 16 between the activated state AN, it is characterized in that described D21 also comprises:
As source AN target AN is sent to its at least one RLP stream data to PDSN send finish after, target AN sends its data in buffer to PDSN.
18, realize the method for conversation shift in the network according to claim 11 between the activated state AN, it is characterized in that described step D also comprises:
Source AN receives after switching that target AN sends begins message, continues to handle forward data that it does not send as yet, finishes up to transmission;
Source AN sends the message that at least one its forward data is sent completely to target AN, carrying the corresponding RLP sequence number of at least one RLP stream that target AN begins to send data in the message, and target AN begins to send forward data.
19, realize the method for conversation shift in the network according to claim 18 between the activated state AN, it is characterized in that described step D also comprises:
When target AN receives the request retransmission data that terminal is sent, and definite corresponding data is cached in source AN, and then target AN is to source these data of AN request retransmission.
20, according to the implementation method of soft handover between the activated state AN in claim 1, the 2 or 3 described networks, it is characterized in that the business of switching between described source AN and the target AN comprises:
Real-time service and/or non-real time service.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2005100858649A CN1859728B (en) | 2005-07-20 | 2005-07-20 | Method for realizing soft switching and conversation shift between excited state AN in network |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2005100858649A CN1859728B (en) | 2005-07-20 | 2005-07-20 | Method for realizing soft switching and conversation shift between excited state AN in network |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1859728A true CN1859728A (en) | 2006-11-08 |
| CN1859728B CN1859728B (en) | 2010-04-07 |
Family
ID=37298578
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2005100858649A Expired - Fee Related CN1859728B (en) | 2005-07-20 | 2005-07-20 | Method for realizing soft switching and conversation shift between excited state AN in network |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1859728B (en) |
Cited By (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2010028584A1 (en) * | 2008-09-12 | 2010-03-18 | 华为技术有限公司 | Method, system and apparatus for paging across access network |
| CN101448293B (en) * | 2007-11-26 | 2011-02-02 | 华为技术有限公司 | Method for switching of wireless communication network systems and system and equipment thereof |
| CN102124777A (en) * | 2008-08-15 | 2011-07-13 | 株式会社Ntt都科摩 | Handover method and wireless access network device |
| CN102301787A (en) * | 2009-02-02 | 2011-12-28 | 株式会社Ntt都科摩 | Mobile communication method and radio base station |
| WO2012126331A1 (en) * | 2011-03-22 | 2012-09-27 | 中兴通讯股份有限公司 | Method and system for transferring data |
| CN101562853B (en) * | 2008-04-17 | 2013-03-27 | 中兴通讯股份有限公司 | Method for switching from microwave access worldwide interoperability system to high-speed packet data system |
| CN103109270A (en) * | 2010-09-22 | 2013-05-15 | 瑞典爱立信有限公司 | In-service software upgrade on cards of virtual partition of network element that includes directing traffic away from cards of virtual partition |
| CN104333550A (en) * | 2007-03-29 | 2015-02-04 | 英特尔公司 | Techniques to support seamless mobility of electronic devices engaged in a session initiation protocol (sip) session |
| CN105446892A (en) * | 2014-07-01 | 2016-03-30 | 上海贝尔股份有限公司 | Virtualization telecommunication equipment dynamic migration method, device and system |
| WO2018176336A1 (en) * | 2017-03-30 | 2018-10-04 | 华为技术有限公司 | Data transmission method and communication device |
| CN109982394A (en) * | 2017-12-27 | 2019-07-05 | 中国移动通信集团北京有限公司 | A kind of method and device of Signalling exchange |
| CN110568996A (en) * | 2019-09-05 | 2019-12-13 | 蒋昊坤 | Local storage capacity expansion system based on device driver |
| CN113747422A (en) * | 2020-05-27 | 2021-12-03 | 中国联合网络通信集团有限公司 | Network service switching method, device, equipment and storage medium |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5101501A (en) * | 1989-11-07 | 1992-03-31 | Qualcomm Incorporated | Method and system for providing a soft handoff in communications in a cdma cellular telephone system |
| WO1999041925A1 (en) * | 1998-02-16 | 1999-08-19 | Nokia Networks Oy | Method and system for performing handover in a mobile communication system |
| CN1132470C (en) * | 2000-05-19 | 2003-12-24 | 华为技术有限公司 | Soft change-over method of CDMA mobile communication system |
-
2005
- 2005-07-20 CN CN2005100858649A patent/CN1859728B/en not_active Expired - Fee Related
Cited By (18)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104333550B (en) * | 2007-03-29 | 2018-02-16 | 英特尔公司 | The methods, devices and systems of the seamless mobility of the electronic equipment of session initiation protocol (SIP) session are participated in for support |
| CN104333550A (en) * | 2007-03-29 | 2015-02-04 | 英特尔公司 | Techniques to support seamless mobility of electronic devices engaged in a session initiation protocol (sip) session |
| CN101448293B (en) * | 2007-11-26 | 2011-02-02 | 华为技术有限公司 | Method for switching of wireless communication network systems and system and equipment thereof |
| CN101562853B (en) * | 2008-04-17 | 2013-03-27 | 中兴通讯股份有限公司 | Method for switching from microwave access worldwide interoperability system to high-speed packet data system |
| CN102124777A (en) * | 2008-08-15 | 2011-07-13 | 株式会社Ntt都科摩 | Handover method and wireless access network device |
| CN102124777B (en) * | 2008-08-15 | 2014-01-01 | 株式会社Ntt都科摩 | Handover method and wireless access network device |
| WO2010028584A1 (en) * | 2008-09-12 | 2010-03-18 | 华为技术有限公司 | Method, system and apparatus for paging across access network |
| CN102301787A (en) * | 2009-02-02 | 2011-12-28 | 株式会社Ntt都科摩 | Mobile communication method and radio base station |
| CN103109270A (en) * | 2010-09-22 | 2013-05-15 | 瑞典爱立信有限公司 | In-service software upgrade on cards of virtual partition of network element that includes directing traffic away from cards of virtual partition |
| WO2012126331A1 (en) * | 2011-03-22 | 2012-09-27 | 中兴通讯股份有限公司 | Method and system for transferring data |
| CN105446892A (en) * | 2014-07-01 | 2016-03-30 | 上海贝尔股份有限公司 | Virtualization telecommunication equipment dynamic migration method, device and system |
| WO2018176336A1 (en) * | 2017-03-30 | 2018-10-04 | 华为技术有限公司 | Data transmission method and communication device |
| US11196821B2 (en) | 2017-03-30 | 2021-12-07 | Huawei Technologies Co., Ltd. | Data transmission method and communications device |
| CN109982394A (en) * | 2017-12-27 | 2019-07-05 | 中国移动通信集团北京有限公司 | A kind of method and device of Signalling exchange |
| CN109982394B (en) * | 2017-12-27 | 2021-03-16 | 中国移动通信集团北京有限公司 | Signaling interaction method and device |
| CN110568996A (en) * | 2019-09-05 | 2019-12-13 | 蒋昊坤 | Local storage capacity expansion system based on device driver |
| CN113747422A (en) * | 2020-05-27 | 2021-12-03 | 中国联合网络通信集团有限公司 | Network service switching method, device, equipment and storage medium |
| CN113747422B (en) * | 2020-05-27 | 2024-02-02 | 中国联合网络通信集团有限公司 | Network service switching method, device, equipment and storage medium |
Also Published As
| Publication number | Publication date |
|---|---|
| CN1859728B (en) | 2010-04-07 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN1859728A (en) | Method for realizing soft switching and conversation shift between excited state AN in network | |
| CN1213630C (en) | Transfer of algorithm parameters during handover of mobile station between radio network subsystems | |
| CN100345396C (en) | Method for performing a handoff in a mobile communication system | |
| CN1244248C (en) | A method for performing a mobile user terminal route update in a telecommunication network operated based on the internet protocol | |
| CN101043301A (en) | Data rearrangement and recombination method in wireless communication system and its base station | |
| CN1692568A (en) | Method for moving a receive window in a radio access network | |
| CN1859791A (en) | Method and system for realizing switching in radio communication network and its base station | |
| CN101047992A (en) | Switchover control method | |
| CN1947441A (en) | Communication handover method, communication message processing method, program for causing computer to execute these methods, and communication system | |
| CN1859445A (en) | Mobile terminal IP address distributing method | |
| CN1933663A (en) | Method for supporting user equipment transferability in LTE system | |
| CN1951132A (en) | Method and system for suspension of a data streaming session in a wireless telecommunication network | |
| CN1571322A (en) | An inter-system switching method for dual-mode terminal | |
| CN101076195A (en) | Mobile terminal, network, method and system for switch network by mobile terminal | |
| CN1901742A (en) | Channel switching method | |
| CN1832628A (en) | Three-layer mobile switchover implementing method based on two-layer prediction and trigging | |
| CN1905569A (en) | Method for changing user IP address of mobile communication network | |
| CN1805603A (en) | Method of implementing dual-mode terminal communication in radio communication system | |
| CN101052213A (en) | User's data transmission method while user's device switching in long term evolution network | |
| CN1921701A (en) | Network switching method and communication network system | |
| CN1794836A (en) | Method and network of regulating internal interface data path characteristics in radio access network | |
| CN1901733A (en) | Method for no-damage switching in radio cut-in technology | |
| CN1852557A (en) | Method for setting-up Oos information while quick switching between grouped data service nodes | |
| CN1933661A (en) | Method for realizing active state inter-AN switching in network | |
| CN1214663C (en) | Connecting control equipment between base stations and connecting control method thereof |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20180426 Address after: California, USA Patentee after: Global innovation polymerization LLC Address before: London, England Patentee before: GW partnership Co.,Ltd. Effective date of registration: 20180426 Address after: London, England Patentee after: GW partnership Co.,Ltd. Address before: 518129 Bantian HUAWEI headquarters office building, Longgang District, Guangdong, Shenzhen Patentee before: HUAWEI TECHNOLOGIES Co.,Ltd. |
|
| TR01 | Transfer of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20100407 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |