CN101415211B - Method, system and apparatus for processing switch - Google Patents

Method, system and apparatus for processing switch Download PDF

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Publication number
CN101415211B
CN101415211B CN200710181822A CN200710181822A CN101415211B CN 101415211 B CN101415211 B CN 101415211B CN 200710181822 A CN200710181822 A CN 200710181822A CN 200710181822 A CN200710181822 A CN 200710181822A CN 101415211 B CN101415211 B CN 101415211B
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asn
data
target
serving
sequence number
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CN101415211A (en
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郭均祥
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Huawei Technologies Co Ltd
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Huawei Technologies Co Ltd
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Priority to PCT/CN2008/072693 priority patent/WO2009049553A1/en
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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W36/00—Hand-off or reselection arrangements
    • H04W36/02—Buffering or recovering information during reselection ; Modification of the traffic flow during hand-off

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  • Computer Networks & Wireless Communication (AREA)
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Abstract

The invention discloses a switching processing method. The method comprises the following steps: an MS which is a Target ASN to be switched acquires a serial number SN' of a first data cached by an Anchor ASN and a serial number SN of a last data which is not transmitted to the MS by a Serving ASN; the Target ASN acquires data with the serial number between the SN and the SN' from the Serving ASN; and the Target ASN transmits the data with the serial number starting from the SN to the MS. By the method, the data integrity during switching can be realized no matter a data path pre-registration process is completed during a switching preparation stage or a switching execution stage, and meanwhile, the Anchor ASN dose not need to unicast data to all Target ASNs, and the problem of the switching time delay is overcome.

Description

A kind of switching handling method, system and device
Technical field
The present invention relates to communication technical field, relate in particular to a kind of switching handling method, system and device.
Background technology
WiMAX (Worldwide Interoperability for Microwave Access, the microwave interoperability is inserted in the whole world) is a kind of wireless metropolitan area network technology based on IEEE 802.16 standards.The WiMAX network mainly is made up of MSS/SS (client), ASN (Access Service Network, accessing business network), CSN (Connectivity Service Network connects service network) three parts; Wherein, ASN comprises BS (Base Station, base station) and ASN-GW (ASN Gateway, accessing business network gate); CSN comprises AAA Server logic entities such as (Authentication Authorization Accounting, AAA server).WiMAX network wireless side is based on the wireless MAN access technology of IEEE 802.16d/e standard, mainly follows IEEE 802.16-2004 (802.16d) standard of formulating in July, 2004.IEEE 802.16-2004 (802.16d) standard operation frequency range be 2GHz to 11GHz, be to authorize and unauthorized mixing frequency range.WiMAX adopts OFDM (Orthogonal Frequency Division Multiplexing; Orthogonal frequency division multiplexi) and OFDMA (Orthogonal Frequency Division Multiple Access; The OFDM access) physical layer; Effectively anti-multipath decline, under optimum channel decline situation, transmission rate can be approached 75Mbps.IEEE 802.16-2004 (802.16d) standard is used for the non line of sight point-to-multipoint technology of metropolitan area network, mainly is form fixing and nomadic network.
Shown in Figure 1 is WiMAX cellular logic Organization Chart, and WiMAX network chief component and function are specially: (1) client (MSS/MS): be used to insert the WiMAX network.(2) accessing business network (ASN): be used to the network function set that the WiMAX terminal provides the wireless access service; ASN comprises BS and ASN-GW network element; Wherein the major function of BS network element is: L2 connection, RRM of BS and MS (Mobile Station, portable terminal) etc. are provided; The major function of ASN-GW network element is: for MS authentication function provides client functionality, Relay (relaying) function (like IP address assignment), ASN intra of L3 information etc. are provided for MS.(3) connect service network (CSN): be used to the WiMAX terminal IP is provided Connection Service, be specially: the IP address assignment of MS, Internet insert, AAA proxy or server (server), based on user's authorization control etc.
Interface through R1 to R6 between the logic entity in the WiMAX network communicates, and each network element and interface relationship are as shown in Figure 1.
The effect of ASN mainly comprises the following aspects: guarantee two layers of establishment of connection between WiMAX terminal and the WiMAX base station; RRM; The optimal selection of network discovery and WiMAX user network service provider; Under the proxy-mobile IP pattern, serve as acting server control WiMAX user's authentication, mandate and charging message; Use establishment of connection for three layers at WiMAX terminal relaying is provided.
The effect of CSN mainly comprises the following aspects: be WiMAX user conversation distributing IP address; Provide the Internet to insert; Serve as authentication and authorization charging acting server or authentication and authorization charging server; Carry out strategy and access control based on user contracting data; Support the foundation in tunnel between ASN and the CSN; Support the generation of WiMAX user's ticket and the WiMAX business accounting between the cross operator; Support the foundation in roaming tunnel between the CSN; Support the mobility between the ASN; Support multiple WiMAX professional, for example location-based business, teleservice, multimedia broadcasting and multicast service etc.
In existing WiMAX technology, a complete switching flow generally is divided into two stages, and the phase I is a handoff preparation phase, and second stage is a handover execution stage.Below in conjunction with embodiment the flow process in two stages is described in detail.
The flow process of handoff preparation phase (Handover Preparation) is as shown in Figure 2, may further comprise the steps:
Step S201, MS send MOB_MSHO-REQ (handoff request) message to Serving ASN (service accessing business network), initiate handoff procedure.
Step S202, ServingASN send HO_Req (handoff request) message of Interface R4 to one or more TargetASNs (target accessing business network).Said Target ASNs is the ASN at potential switching Target BSs (target BS) place.
Step S203, Target ASNs initiate context request process (Context Request procedure), to the AK of Authenticator ASN (mandate accessing business network) request MS (Authorization Key authorizes key) context.This step also possibly accomplished in hand-off execution process.
Step S204, Target ASNs are initiated to the pre-established process of data path of Anchor ASN (anchor point accessing business network).If AnchorASN does not support the pre-established process of data path, then to return Path_Prereg_Rsp (path is pre-established replys) message, and in message, carry wrong indication to Target ASN (s), then need carry out this process in handover execution stage this moment.Therefore, the pre-established process steps of data path is optional in handoff preparation phase, both can accomplish in handoff preparation phase, also can accomplish in follow-up handover execution stage.But because in the prior art; Support data integrity if desired; Then this step must be carried out in handoff preparation phase; This moment, Anchor ASN will carry out following steps: Anchor ASN sets (as shown in Figure 4) to Target ASNs unicast data along data path, and the sequence number SN ' (sequence number, sequence number) of first unicast data is sent to Target ASNs.
Step S205, Target ASNs send HO_Rsp (handoff response) the message authentication handoff request of Interface R4 to Serving ASN.
After step S206, ServingASN receive the HO_Rsp message of TargetASNs transmission; Send MOB_BSHO-RSP (handoff response) message to MS, the potential Target BS that comprises one or more network selecting in this MOB_BSHO-RSP message supplies MS to switch.
Step S207, Serving ASN send HO_Ack (handover acknowledge) message of Interface R4 to Target ASNs.
The flow process of handover execution stage is as shown in Figure 3, may further comprise the steps:
Step S301, MS send MOB_HO-IND (switching indication) message to Serving ASN, and instruct MS will switch to it on the selected a certain Target BS of handoff preparation phase.
Step S302, Serving ASN receive and according to this MOB_HO-IND message, send HO_Cnf (switch and the confirm) message of Interface R4 to the Target ASN of MS selection.Support data integrity if desired; This moment, ServingASN need stop to send downlink data to source BS; And the data that buffer memory AnchorASN sends, and in the HO_Cnf message of sending, carry the sequence number SN of last data that do not send to source BS to Target ASN.
After step S303, Target ASN receive HO_Cnf message, send HO_Ack (handover acknowledge) message of Interface R4 to Serving ASN.
Step S304, Target ASN initiate context request process (Context Request procedure), to the AK context of Authenticator ASN request MS.If this process is being switched the set-up procedure completion, then this step does not exist.
If step S305 does not have execution data path registered in advance process (Data Path Pre-Reg Procedure) in handoff preparation phase, then in this step, carry out this process.
What step S306, MS were initiated to Target ASN goes into network process again.After MS networked successfully, TargetASN sent to MS with the data of preserving, and the data of transmission are: the data that are SN from its sequence number that receives begin to send.
Step S307, Target ASN are initiated to the data path registration process (Data Path Registration procedure) of Anchor ASN, set up the datum plane that plays Anchor ASN.After setting up datum plane, Anchor ASN sends to Target ASN with downlink data, issues MS by Target ASN then.
Step S308, Target ASN initiate CMAC Key Count Update process, upgrade CMAC Key Count value among the Authenticator ASN.
HO_Complete (switch and the accomplish) message that step S309, TargetASN send Interface R4 to ServingASN, notice Serving ASN switching is accomplished; After Serving ASN receives HO_Complete message, discharge the contextual information of MS.
Step S310, Anchor ASN initiate cancellation data path registration process (Data Path De-Registration) to Serving ASN.
The data path of the registered in advance of step S311, all non-selected Target ASN of Anchor ASN cancellation.
In existing WiMAX technology, need to guarantee the integrality of data in the handoff procedure, to reduce the packet loss phenomenon in the handoff procedure, realize real harmless switching.The scheme that guarantees data integrity in the handoff procedure at present is divided into base case and is based upon band ARQ (the Automatic Repeat-reQuest on the base case; Automatically repeat requests) two kinds of the schemes of synchronization mechanism; The latter is more fine-grained scheme, need be based upon on the former base case.
The data integrity method that has a plurality of path tree clean cultures in a kind of edge in the prior art one; The basic principle of this method has been embodied in the switching flow of the foregoing description; The root node Anchor ASN that promptly in switching set-up procedure, is set from data path by the data of data path registered in advance message (Data Path Pre-Reg Request) triggering Business Stream gives all Target ASN along branch's clean culture of data path tree; Data along all branch's clean cultures are consistent with the business data flow that Anchor ASN sends to Serving ASN, and the data that Target ASN preservation clean culture is come come or switch to be cancelled up to the MS switching.In handoff preparation phase; Target ASN is when carrying out data path registered in advance (Data Path Pre-RegProcedure) with Anchor ASN; Anchor ASN begins unicast data (shown in Fig. 1 step S204); Anchor ASN carries the sequence number SN ' of the data of first clean culture in the response message of the data path registered in advance of sending to Target ASN; TargetASN receives this sequence number SN ' and notifies ServingASN; Make Serving ASN grasp each Target ASN data in buffer content, Serving ASN just need not have Target ASNs data in buffer to send to MS before notice MS switches like this, and promptly Serving ASN need send to MS to all data before the sequence number SN ' at least before notice MS switches.Because each Target ASN is when carrying out the data path registered in advance with Anchor ASN; The message of sending not necessarily arrives simultaneously; So possibly all safeguard a sequence number for each Target ASN, Serving ASN just need send to MS to all data before the SN ' of sequence number maximum at least before notice MS switches in this case.
In each branch's unicast data of path tree, Serving ASN still sends data to MS at Anchor ASN.When MS to Serving ASN send MOB_HO-IND message informing Serving ASN its will switch the time (shown in the step S301 among Fig. 2); Serving ASN stops to send data to source BS (and MS); The data that while buffer memory Anchor ASN sends over; And sequence number SN (shown in the step S302 among Fig. 2) through last data that do not send to source BS of HO_Conf message informing TargetASN; As stated, after MS switched to objective network, the Target ASN of objective network just will be being that all data that SN begins send to MS from sequence number.
There is following shortcoming in prior art one: (1) data path pre-registration process possibly accomplished in handoff preparation phase; Also possibly accomplish in handover execution stage; Be an optional step, if this process is accomplished the integrality of data in then can guaranteeing to switch in handoff preparation phase; If this process is accomplished in handover execution stage, the integrality of data in then can't guaranteeing to switch.(2) after data path set up to be accomplished, Anchor ASN need be to the branch unicast data of all Target ASN along the data path tree, so this will be very high to the buffer memory Capability Requirement of TargetASN, also greatly waste resources such as system bandwidth simultaneously.(3) require the Serving BS (serving BS) must be after MS has transmitted all Anchor ASN and do not have data in buffer in this method; Can initiate MOB_BS_RSP/REQ to MS; Therefore switching need be waited for a period of time, and has influenced the efficient of time delay for switching and data forwarding.
There is a kind of data integrity method of transmitting of asking in the prior art two; Prior art one some improvement have been done; Be specially: Anchor ASN is not to transmit data to all path trees when data path registered in advance (Data Path Pre-Registration), but with metadata cache; Send data path login request message (Data Path Registration Request) up to Target ASN to it, Anchor ASN just gives Target ASN with data forwarding.
The preparatory stage of switching; Anchor ASN in a single day receive just begin after the Data Path Pre-Registration Request message that any Target ASN sends data cached; Anchor ASN sends to Target ASN with the sequence number SN ' of first data in buffer through Data Path Pre-Registration Response; Target ASN is transmitted to Serving ASN through HO_Response message with this sequence number SN '; Serving ASN just can learn which data Target ASN place can obtain like this, and Serving ASN just need send to MS to the data that Target ASNs can't obtain before notice MS switches.
Simultaneously, Serving ASN still sends data to MS.When MS to Serving ASN send the MOB_HO-IND message informing its will switch the time; Serving ASN is through last sequence number SN that does not send of HO_Conf message informing TargetASN; Like this; After MS switches to objective network, the Target ASN of objective network just will send to MS from all data that this sequence number SN begins.
Anchor ASN no longer transmits data to all path trees in the prior art two when the data path registered in advance, has saved resources such as system bandwidth, but still exists in other shortcoming prior aries two in the prior art one.
Summary of the invention
The embodiment of the invention provides a kind of switching handling method, system and device, and data path registered in advance process must be accomplished in handoff preparation phase when realizing data integrity in solve switching, Anchor ASN is along the problem of the transmission restriction on opportunity of a plurality of paths unicast data and handoff notification message.
For achieving the above object, the embodiment of the invention provides a kind of switching handling method, may further comprise the steps:
The target service Access Network Target ASN that mobile terminal MS is about to switch to obtains sequence number SN ' and the sequence number SN that service business Access Network Serving ASN does not send to last data of said MS of first data of anchor point accessing business network Anchor ASN buffer memory;
Said Target ASN sets up the datum plane that plays said Anchor ASN, and said Anchor ASN sends to said Target ASN with the downlink data of its buffer memory;
Said Target ASN obtains the data between sequence number SN to the S N '-1 from said Serving ASN;
Said Anchor ASN is initiated to the cancellation data path registration process of said Serving ASN;
Said Target ASN sends the data that begin from said sequence number SN to MS.
The embodiment of the invention also provides a kind of switching processing system, comprising:
Mobile terminal MS is used for when switching, sending handoff request to service business Access Network Serving ASN;
Said Serving ASN is used to receive and according to the handoff request that said MS sends, send said MS handoff request to one or more target service Access Network Target ASN; After receiving the switching indication that said MS sends, the sequence number SN of last data that does not send to said MS is sent to the said Target ASN that said MS is about to switch to; And send said sequence number SN to the data between the sequence number SN '-1 of first data to said Target ASN;
Said Target ASN after being used to receive the handoff request of said Serving ASN transmission, is initiated to the pre-established process of data path of anchor point accessing business network Anchor ASN; Obtain sequence number SN ' and the sequence number SN that said Serving ASN does not send to last data of MS of first data of said Anchor ASN buffer memory; Receive the data between the sequence number SN to SN '-1 that said Serving ASN sends; After said MS switches to this equipment, send the data that begin from said sequence number SN to said MS;
Said Anchor ASN is used in the pre-established process of data path, and its data that receive from other entities of buffer memory send to said Target ASN with the sequence number SN ' of first data of buffer memory; After data path is set up, its data in buffer is sent to said Target ASN.
A kind of target service Access Network Target ASN comprises: the pre-established unit of data path is used for after the handoff request that receives service business Access Network Serving ASN transmission, being initiated to the pre-established process of data path of said Anchor ASN; Retransmission unit is used for after said MS switches to this equipment, the total data that receives being transmitted to said MS.
Compared with prior art, embodiments of the invention have the following advantages:
Through the method that the embodiment of the invention provides, no matter data path registered in advance process is to accomplish the integrality of data in can both realizing switching in the handoff preparation phase completion or in handover execution stage; Simultaneously Anchor ASN need be to all Target ASN unicast datas, and have overcome the time delay for switching problem.
Description of drawings
Fig. 1 is a WiMAX cellular logic configuration diagram in the prior art;
Fig. 2 is the flow chart of handoff preparation phase in the prior art;
Fig. 3 is the flow chart of handover execution stage in the prior art;
Fig. 4 is the data path tree sketch map of Business Stream in the prior art;
Fig. 5 is a kind of switching handling method flow chart of the embodiment of the invention one;
Fig. 6 is a kind of switching handling method flow chart of the embodiment of the invention two;
Fig. 7 is a kind of switching handling method sketch map of the embodiment of the invention three;
Fig. 8 is a kind of switching handling method sketch map of the embodiment of the invention three;
Fig. 9 is a kind of switching handling method sketch map of the embodiment of the invention four;
Figure 10 is a kind of switching handling method sketch map of the embodiment of the invention five;
Figure 11 is a kind of switching handling method sketch map of the embodiment of the invention six;
Figure 12 is a kind of switching processing system sketch map of the embodiment of the invention seven;
Figure 13 is a kind of Target ASN sketch map of the embodiment of the invention eight;
Figure 14 is a kind of Serving ASN sketch map of the embodiment of the invention nine.
Embodiment
Below in conjunction with accompanying drawing and embodiment, specific embodiments of the invention describes in further detail.
In the embodiment of the invention one, a kind of switching handling method is as shown in Figure 5, and concrete steps are following:
The handoff request that step S501, Serving ASN send according to MS is sent handoff request to one or more Target ASN.
After step S502, Target ASN receive the handoff request of Serving ASN transmission, be initiated to the pre-established process of data path of Anchor ASN.
After step S503, Anchor ASN receive the pre-established request of data path of Target ASN transmission; Stop to send data to Serving ASN; Will be from HA (Home Agent; Home agent) metadata cache that receives gets up, and the sequence number SN ' of first data in buffer is sent to Target ASN, and Target ASN can send to Serving ASN with SN ' through switching request response.
Step S504, Serving ASN stop to send data to MS after receiving the switching indication that MS sends, the data that buffer memory sends over from Anchor ASN, and notice Target ASN last do not send to the sequence number SN of the data of MS.
Step S505, Target ASN obtain the data between the sequence number SN to SN ' from Serving ASN.This step can adopt the mode of data forwarding (Data forwarding); Be that Serving ASN initiatively gives Target ASN with the data forwarding between the sequence number SN to SN '; Perhaps adopt the mode of data retrieval (Data Retrieval), promptly Target ASN triggers Serving ASN and transmits the data between the sequence number SN to SN '.
Step S506, Anchor ASN and Target ASN set up data path, and Anchor ASN sends to Target ASN with its data in buffer.
Step S507, after MS switches to Target ASN, the data forwarding that begins from sequence number SN that Target ASN will receive is given MS, if receive the data before the sequence number SN then abandon.
Further, the embodiment of the invention two is the improvement on the basis of the embodiment of the invention one, and a kind of switching handling method is as shown in Figure 6, and concrete steps are following:
The handoff request that step S601, Serving ASN send according to MS is sent handoff request to one or more Target ASN.
After step S602, Target ASN receive the handoff request of Serving ASN transmission, be initiated to the pre-established process of data path of Anchor ASN.
After step S603, Anchor ASN receive the pre-established request of data path of Target ASN transmission; The data that buffer memory receives from HA; And the sequence number SN ' of first data in buffer is sent to Target ASN; Continue simultaneously to send data to Serving ASN, Target ASN can send to Serving ASN with SN ' through switching request response.。
After step S604, Serving ASN receive the switching indication of MS, stop to send data to MS, the data that buffer memory sends over from Anhor ASN, and notice Target ASN last do not send to the sequence number SN of the data of MS.
The size of step S605, Target ASN comparative sequences SN and SN ' if counter-rotating does not take place sequence number and SN is not more than SN ', is changeed step S606, otherwise need be from Serving ASN request data transfer; Perhaps the size of Serving ASN comparative sequences SN and SN ' if counter-rotating does not take place sequence number and SN is not more than SN ', is changeed step S606, does not give Target ASN otherwise Serving ASN does not need initiatively to transmit data.
Step S606, Target ASN obtain the data between the sequence number SN to SN ' from Serving ASN.This step can adopt the mode of data forwarding (Data forwarding); Be that Serving ASN initiatively gives Target ASN with the data forwarding between the sequence number SN to SN '; Perhaps adopt the mode of data retrieval (Data Retrieval), promptly Target ASN triggers Serving ASN and transmits the data between the sequence number SN to SN '.
Step S607, Anchor ASN and Target ASN set up data path, and Anchor ASN sends to Target ASN with its data in buffer.
Step S608, after MS switches to Target ASN, the data forwarding that begins from sequence number SN that Target ASN will receive is given MS, if receive the data before the sequence number SN then abandon.
In the embodiments of the invention three; Present invention is described to be implemented as example with data path registered in advance process in handoff preparation phase; A complete switching flow generally is divided into two stages in WiMAX; Phase I is a handoff preparation phase, and second stage is a handover execution stage, and a kind of switching handling method is shown in Fig. 7 to 8.
The flow process of handoff preparation phase is as shown in Figure 7 in the present embodiment, and concrete steps are following:
Step S701, MS initiate to switch through send MOB_MSHO-REQ (handoff request) message to Serving ASN.
Step S702, Serving ASN send the HO_Req message of Interface R4 to one or more Target ASNs.Said Target ASNs is the ASN at potential switching Target BSs place.
Step S703, Target ASN (s) initiate context request process (Context Request procedure), to the AK context of Authenticator ASN request MS.This step also possibly accomplished in handover execution stage.
Step S704, Target ASN (s) are initiated to the pre-established process of data path of Anchor ASN.If Anchor ASN does not support the pre-established process of data path; Anchor ASN returns Path_Prereg_Rsp message to Target ASN (s); And in this message, carry wrong indication, the pre-established process of data path this moment then need be carried out in handover execution stage.Suppose that here Anchor ASN supports this process, then Anchor ASN need carry out following steps:
A) Anchor ASN stops to send downlink data to Serving ASN, and the data of buffer memory HA transmission;
B) Anchor ASN sends to Target ASN with the sequence number SN ' of first data cell of its buffer memory.
Initiate data path pre-registration (R4-DP-PreReg) process between step S705, Serving ASN and the Target ASN (s), be used to set up the data path between and transmit data.This process also possibly accomplished in handover execution stage.
The HO_Rsp message authentication handoff request that step S706, Target ASN (s) send Interface R4 to Serving ASN, the information of carrying sequence number SN ' in this message.
Step S707, Serving ASN send MOB_BSHO-RSP message to MS, and the potential Target BS that comprises one or more network selecting in the message switches to MS.
Step S708, Serving ASN send the HO_Ack message of Interface R4 to Target ASN (s).
The flow process of handover execution stage is as shown in Figure 8 in the present embodiment, and concrete steps are following:
Step S801, MS send MOB_HO-IND message to Serving ASN, and instruct MS will switch to it on the selected a certain Target BS of handoff preparation phase.
After step S802, Serving ASN receive MOB_HO-IND message, stop to send downlink data to source BS, and the data that send over from Anchor ASN of buffer memory.The HO_Cnf message that the Target ASN that Serving ASN selects to MS sends Interface R4 is carried the sequence number SN of last data that do not send to source BS in this message.
After step S803, Target ASN receive HO_Cnf message, send the HO_Ack message of Interface R4 to Serving ASN.
Step S804, Target ASN initiate context request process (Context Request procedure), to the AK context of Authenticator ASN request MS.If this process is being switched the set-up procedure completion, then this step does not exist.
Initiate data path pre-registration process (R4-DP-PreReg Procedure) between step S805, Serving ASN and the Target ASN, be used to set up the data path between and transmit data.If data path pre-registration process is accomplished in handoff preparation phase, then this step does not exist.
What step S806, MS were initiated to Target ASN goes into network process again.
Step S807, Target ASN are initiated to the data path registration process (Data Path Registration procedure) of Anchor ASN, set up the datum plane that plays Anchor ASN.Anchor ASN sends to Target ASN with the downlink data of its buffer memory.
Initiate data path registration (R4-DP-Reg) between step S808, Serving ASN and the Target ASN.Behind the data path of setting up between Serving ASN and the Target ASN, Serving ASN all is transmitted to Target ASN with its data in buffer.
Step S809, Target ASN initiate CMAC Key Count Update process, upgrade the CMAC Key Count value of Authenticator ASN.
Step S810, Target ASN send R4HO_Complete message to Serving ASN, and notice Serving ASN switches completion.After Serving ASN receives HO_Complete message, discharge the contextual information of MS.
Step S811, Anchor ASN are initiated to the cancellation data path registration process (Data Path De-Registration) of Serving ASN.The data path of the registered in advance of all unselected Target ASN of Anchor ASN cancellation.
Initiate data path cancel register (R4-DP-DeReg) process between step S812, Serving ASN and the Target ASN.
Step S813, after MS switches to Target ASN, the data forwarding that begins from sequence number SN that Target ASN will receive is given MS, if receive the data before the sequence number SN then abandon.This step can just begin after Target ASN receives the data that sequence number is SN.
In the embodiments of the invention four,, but carry out in the execution phase of switching in the preparatory stage of switching execution data path registered in advance process not.Complete switching flow generally is divided into two stages to carry out; The step S704 (being the pre-established process of data path that Target ASN (s) is initiated to Anchor ASN) of the flow process of the handoff preparation phase in the present embodiment in Fig. 7 do not exist; That describes in other step and the above-mentioned enforcement three is consistent, repeats no more in this flow process to handoff preparation phase, only describes the flow process of handover execution stage; A kind of switching handling method is as shown in Figure 9, and concrete steps are following:
Step S901, MS send MOB_HO-IND message to Serving ASN, indicate it will switch on the selected a certain Target BS of handoff preparation phase.
After step S902, Serving ASN receive MOB_HO-IND message, stop to send downlink data to source BS, and the data that send over from Anchor ASN of buffer memory.Serving ASN carries the sequence number SN of last data that do not send to source BS to the HO_Cnf message that TargetASN sends Interface R4 in this message.
After step S903, Target ASN receive HO_Cnf message, send the HO_Ack message of Interface R4 to Serving ASN.
Step S904, Target ASN initiate context request process (Context Request procedure), to the AK context of Authenticator ASN request MS.
Step S905, Target ASN are initiated to the pre-established process of data path of Anchor ASN.Anchor ASN receives and carries out following steps after the data path registered in advance message that Target ASN sends:
A) Anchor ASN stops to send downlink data to Serving ASN, and the data that send over from HA of buffer memory;
B) Anchor ASN sends to Target ASN with the sequence number SN ' of first data cell of buffer memory.
Initiate data path pre-registration process (R4-DP-PreReg Procedure) between step S906, Serving ASN and the Target ASN, be used to set up the data path between and transmit data.If data path pre-registration process is accomplished in handoff preparation phase, then this step does not exist.
What step S907, MS were initiated to Target ASN goes into network process again.
Step S908, Target ASN are initiated to the data path registration process (Data Path Registration procedure) of Anchor ASN, set up the datum plane that plays Anchor ASN.Anchor ASN sends to Target ASN with the downlink data of its buffer memory.
Initiate data path registration (R4-DP-Reg) between step S909, Serving ASN and the Target ASN.Behind the data path of setting up between Serving ASN and the Target ASN, Serving ASN all is transmitted to Target ASN with its data in buffer.
Step S910, Target ASN initiate CMAC Key Count Update process, upgrade the CMAC Key Count value of Authenticator ASN.
The HO_Complete message that step S911, Target ASN send Interface R4 to Serving ASN, notice Serving ASN switches completion.After Serving ASN receives HO_Complete message, discharge the contextual information of MS.
Step S912, Anchor ASN are initiated to the cancellation data path registration process (Data Path De-Registration) of Serving ASN.The data path of the registered in advance of all unselected Target ASN of Anchor ASN cancellation.
Finish if step S913 data are all transmitted, initiate data path cancel register (R4-DP-DeReg) process between Serving ASN and the Target ASN.
Step S914, after MS switches to Target ASN, the data forwarding that begins from sequence number SN that Target ASN will receive is given MS, if receive the data before the sequence number SN then abandon.This step can just begin after Target ASN receives the data that sequence number is SN.
In the foregoing description three and embodiment four; No matter data path pre-registration process is to carry out or carry out in handover execution stage in handoff preparation phase; Anchor ASN will carry out following steps in data path pre-registration process: a) stops to send data to Serving ASN, and the data that send over from HA of buffer memory; B) the sequence number SN ' with its first data in buffer sends to Target ASN.
MS is after Serving ASN sends MO_HO_IND; Serving ASN will stop to send data to MS; And buffer memory sends to Targrt ASN with last sequence number SN that does not send to the data of MS through HO_Cnf message simultaneously from the data that Anchor ASN comes.After accomplishing above-mentioned steps, Serving ASN all is transmitted to Target ASN with the data of sequence number SN to SN '-1; Behind MS target approach network, Target ASN sends to MS with the data that begin from sequence number SN that these do not send.
Target ASN need tell Serving ASN with sequence number SN ' in said method; Dual mode is arranged; The one, Target ASN can send to Serving ASN to let it know that which data can obtain through switching response message (HO_Rsp) with sequence number SN '; Also can submit message with sequence number SN ' notice Serving ASN through context by Target ASN, then Serving ASN all is transmitted to Target ASN with the data of sequence number SN to SN '-1.
In the embodiments of the invention five; Present invention is described to be implemented as example with data path registered in advance process in handoff preparation phase; Said with embodiment three; A complete switching flow generally is divided into two stages in WiMAX, and the phase I is a handoff preparation phase, and second stage is a handover execution stage.In the present embodiment; The flow process of handoff preparation phase Anchor ASN in the registered in advance process of data path still continues to Serving ASN sends downlink data the consistent of description in other steps and above-mentioned enforcement two in data cached; Repeat no more at this; Only describe the flow process of handover execution stage, a kind of switching handling method is shown in figure 10, and concrete steps are following:
Step S1001, MS send MOB_HO-IND message to Serving ASN, indicate it will switch on the selected a certain Target BS of handoff preparation phase.
After step S1002, Serving ASN receive MOB_HO-IND message, stop to send downlink data to source BS, and the data that send over from Anchor ASN of buffer memory.Serving ASN carries the sequence number SN of last data that do not send to source BS to the HO_Cnf message that Target ASN sends Interface R4 in this message.
After step S1003, Target ASN receive HO_Cnf message, send the HO_Ack message of Interface R4 to Serving ASN.
Step S1004, Target ASN initiate context request process (Context Request procedure), to the AK context of Authenticator ASN request MS.
Initiate data path pre-registration process (R4-DP-PreReg Procedure) between step S1005, Serving ASN and the Target ASN, be used to set up the data path between and transmit data.If data path pre-registration process is accomplished in handoff preparation phase, then this step does not exist.
What step S1006, MS were initiated to Target ASN goes into network process again.
Step S1007, Target ASN are initiated to the data path registration process (Data Path Registration procedure) of Anchor ASN, set up the datum plane that plays Anchor ASN.After datum plane was set up, Anchor ASN can begin data in buffer is transmitted to Target ASN.
Initiate data path registration (R4-DP-Reg) between step S1008, Serving ASN and the Target ASN.Behind the data path of setting up between Serving ASN and the Target ASN; The size of Serving ASN comparative sequences SN ' and SN; When if sequence number counter-rotating and SN does not take place during greater than SN ', then Serving ASN need not transmit any data and give Target ASN; If SN is less than SN ', Serving ASN then need all be transmitted to Target ASN with the data between the sequence number SN to SN '-1.
Step S1009, Target ASN initiate CMAC Key Count Update process, upgrade the CMAC Key Count value of Authenticator.
Step S1010, Target send R4 HO_Complete message to Serving ASN, and notice Serving ASN switches completion, after Serving ASN receives HO_Complete message, discharges the contextual information of MS.
Step S1011, Anchor ASN are initiated to the cancellation data path registration process (Data Path De-Registration) of Serving ASN.The data path of the registered in advance of all unselected Target ASN of Anchor ASN cancellation.
Initiate data path cancel register (R4-DP-DeReg) process between step S1012, Serving ASN and the Target ASN.
Step S1013, after MS switches to Target ASN, the data forwarding that begins from sequence number SN that Target ASN will receive is given MS, if receive the data before the sequence number SN then abandon.This step can just begin after Target ASN receives the data that sequence number is SN.Sequence number is that the data of SN can forward (SN is less than SN ' situation) from Serving ASN, also can send (SN is greater than SN ' situation) from Anchor ASN.
In the embodiments of the invention six,, but carry out in the execution phase of switching in the preparatory stage of switching execution data path registered in advance process not.Complete switching flow generally is divided into two stages to carry out; The flow process of the handoff preparation phase of present embodiment is consistent with above-mentioned enforcement two descriptions, repeats no more at this, only describes the flow process of handover execution stage; A kind of switching handling method is shown in figure 11, and concrete steps are following:
Step S1101, MS send MOB_HO-IND message to Serving ASN, indicate it will switch on the selected a certain Target BS of handoff preparation phase.
After step S1102, Serving ASN receive MOB_HO-IND message, stop to send downlink data to source BS, and the data that send over from Anchor ASN of buffer memory.Serving ASN carries the sequence number SN of last data that do not send to source BS to the HO_Cnf message that Target ASN sends Interface R4 in this message.
After step S1103, Target ASN receive HO_Cnf message, send the HO_Ack message of Interface R4 to Serving ASN.
Step S1104, Target ASN initiate context request process (Context Request procedure), to the AK context of Authenticator ASN request MS.
Step S1105, Target ASN are initiated to the pre-established process of data path of Anchor ASN.Anchor ASN carries out following steps after the data path registered in advance message that receives Target ASN transmission:
A) with embodiment two and embodiment three in describe different, Anchor ASN still continues to send downlink data to Serving ASN, and the data that send over from HA of buffer memory;
B) Anchor ASN sends to Target ASN with the sequence number S N ' of first data cell of buffer memory.
Initiate data path pre-registration process (R4-DP-PreReg Procedure) between step S1106, Serving ASN and the Target ASN, be used to set up the data path between and transmit data.If data path pre-registration process is accomplished in handoff preparation phase, then this step does not exist.
What step S1107, MS were initiated to Target ASN goes into network process again.
Step S1108, Target ASN are initiated to the data path registration process (Data Path Registration procedure) of Anchor ASN, set up the datum plane that plays Anchor ASN.After datum plane was set up, Anchor ASN can begin data in buffer is transmitted to Target ASN.
Initiate data path registration (R4-DP-Reg) between step S1109, Serving ASN and the Target ASN.Behind the data path of setting up between Serving ASN and the Target ASN; The size of Serving ASN comparative sequences SN ' and SN; When if sequence number counter-rotating and SN does not take place during greater than SN ', then Serving ASN need not transmit any data and give Target ASN; If SN is less than SN ', Serving ASN then need all be transmitted to Target ASN with the data between the sequence number SN to SN '-1.
Step S1110, Target ASN initiate CMAC Key Count Update process, upgrade the CMAC Key Count value of Authenticator.
The HO_Complete message that step S1111, Target send Interface R4 to Serving ASN, notice Serving ASN switches completion, after Serving ASN receives HO_Complete message, discharges the contextual information of MS.
Step S1112, Anchor ASN are initiated to the cancellation data path registration process (Data Path De-Registration) of Serving ASN.The data path of the registered in advance of all unselected Target ASN of Anchor ASN cancellation.
Initiate data path cancel register (R4-DP-DeReg) process between step S1113, Serving ASN and the Target ASN.
Step S1114, after MS switches to Target ASN, the data forwarding that begins from sequence number SN that Target ASN will receive is given MS, if receive the data before the sequence number SN then abandon.This step can just begin after Target ASN receives the data that sequence number is SN.Sequence number is that the data of SN can forward (SN is less than SN ' situation) from Serving ASN, also can send (SN is greater than SN ' situation) from Anchor ASN.
In the foregoing description five and embodiment six; No matter data path registered in advance process is to carry out or carry out in handover execution stage in handoff preparation phase; Anchor ASN will carry out following steps in this process: a) different with the method for implementing four descriptions with embodiment three; The downlink data that buffer memory sends over from HA, but it still continues to send downlink data to Serving ASN; B) the sequence number SN ' with first data in buffer sends to Target ASN.
MS is after Serving ASN sends switch indicating information (MO_HO_IND); Serving ASN will stop to send data to MS; And the data that buffer memory sends over from Anchor ASN send to Targrt ASN with last sequence number SN that does not send to the data of MS through HO_Cnf message simultaneously.After the data path between Anchor ASN and the Target ASN was set up, Anchor ASN can begin data in buffer is sent to Target ASN.After the data path between Serving ASN and the Target ASN is set up; The size of Serving ASN comparative sequences SN and SN '; If sequence number counter-rotating and SN does not take place greater than SN ', then Serving ASN need not transmit any data and give Target ASN; If sequence number do not take place the counter-rotating and SN ' greater than SN, then Serving ASN all is transmitted to Target ASN with the data between the sequence number SN to SN '-1.Behind MS target approach network, the data that begin from sequence number SN that Target ASN will not send send to MS, if Target ASN receives the data of sequence number less than SN are arranged, and then discard.Sequence number is that the data of SN can forward (SN is less than SN ' situation) from Serving ASN, also can send (SN is greater than SN ' situation) from Anchor ASN.
Embodiments of the invention five are the further improvement of the method for description in embodiments of the invention three and embodiment four with the method for implementing to describe in six; Especially the method for describing among the embodiment five can further improve the efficient of data forwarding and reduce handover delay.
Among the embodiment that more than describes; Target ASN obtains data through the mode of data forwarding from Serving ASN; Also can adopt the mode of data retrieval; Be that Target ASN triggers Serving ASN forwarding data, be specially: Target ASN sends Data Retrival Request (data retrieval request) message request Serving ASN to Serving ASN and transmits data; After Serving ASN receives the Data Retrival Request message of Target ASN transmission, send Data Retrival Response (data retrieval response) message, carry the data that need forwarding in the message to Target ASN.When adopting the mode of data retrieval, can not set up data path between Serving ASN and the Target ASN, and compare the size of SN and SN ' by Target ASN; Also can set up data path; When to be Target ASN through Data Retrival Request message request Serving ASN transmit data; Serving ASN through set up and Target ASN between data path transmit data; Serving ASN sends Data Retrival Response message authentication to Target ASN after data forwarding is intact.The mode of other implementation procedures and data forwarding is similar, repeats no more at this.
Among the embodiment of foregoing description; Transmit data if adopt the mode of data forwarding between Target ASN and the Serving ASN; Target ASN need be with SN ' notice Serving ASN; If adopt the mode of data retrieval to transmit data, Target ASN then need be with SN ' notice Serving ASN.
Through the method that above embodiment provides, no matter data path registered in advance process is to accomplish the integrality of data in can both realizing switching in the handoff preparation phase completion or in handover execution stage; Simultaneously AnchorASN need be to all Target ASN unicast datas, and have overcome the time delay for switching problem.
In the embodiments of the invention seven, a kind of switching processing system is shown in figure 12, comprising:
MS10 is used for when switching, sending handoff request to Serving ASN20.Serving ASN20 is used to receive and according to the handoff request that MS10 sends, send the MS10 handoff request to one or more Target ASN30; After receiving the switching indication that MS10 sends, the sequence number SN of last data that does not send to MS10 is sent to the Target ASN30 that MS10 is about to switch to; And to Target ASN30 transmission data.Target ASN30 after being used to receive the handoff request of Serving ASN20 transmission, is initiated to the pre-established process of data path of Anchor ASN40; Obtain sequence number SN ' and the sequence number SN of last data that Serving ASN20 does not send to MS10 of first data of Anchor ASN40 buffer memory; Receive the data that Serving ASN20 sends; After MS10 switches to this equipment, send the data that begin from sequence number SN to MS10.Anchor ASN40 is used in the pre-established process of data path, and its data that receive from other entities of buffer memory send to Target ASN30 with the sequence number SN ' of first data of buffer memory; After data path is set up, its data in buffer is sent to Target ASN30.
In the embodiments of the invention eight, a kind of Target ASN30 is shown in figure 13, comprising:
The pre-established unit 31 of data path is used for after the handoff request that receives Serving ASN20 transmission, being initiated to the pre-established process of data path of Anchor ASN40.Retransmission unit 32 is used for after MS10 switches to this equipment, and the total data that receives is transmitted to MS10.
Also comprise: comparing unit 33; Be used for adopting the mode of data retrieval to trigger Serving ASN20 when it sends data at Target ASN30; The size that compares SN ' and SN; If SN ', triggers Serving ASN20 greater than SN and sends the data between the SN to SN ' to it, do not send data to it otherwise do not trigger Serving ASN20.
In the embodiments of the invention nine, a kind of Serving ASN20 is shown in figure 14, comprising:
Transmit-Receive Unit 21 is used to receive and according to the handoff request that MS10 sends, send handoff request to one or more Target ASN30.Processing unit 22; Be used for after the switching indication that receives the MS10 transmission; Stop to send data to MS10, the data that buffer memory sends from Anchor ASN40, and the sequence number SN that will not send to last data of MS10 sends to the Target ASN30 that MS10 is about to switch to.
Also comprise: comparing unit 23; The mode that is used for adopting data forwarding at Serving ASN20 is when Target ASN30 sends data; The size that compares SN ' and SN; If SN ' greater than SN, transmits the data between the SN to SN ' to Target ASN30, otherwise does not transmit data to Target ASN30.Data path is set up unit 24, is used to set up the data path between Serving ASN20 and the Target ASN30.
Through the system that above embodiment provides, no matter data path registered in advance process is to accomplish the integrality of data in can both realizing switching in the handoff preparation phase completion or in handover execution stage; Simultaneously Anchor ASN need be to all Target ASN unicast datas, and have overcome the time delay for switching problem.
Through the description of above execution mode, those skilled in the art can be well understood to the present invention and can realize by the mode that software adds essential general hardware platform, can certainly pass through hardware, but the former is better execution mode under a lot of situation.Based on such understanding; The part that technical scheme of the present invention contributes to prior art in essence in other words can be come out with the embodied of software product; This obtains the machine software product and is stored in the storage medium, comprises that some instructions are used so that a station terminal equipment is carried out the method for each embodiment of the present invention.
More than disclosedly be merely several specific embodiment of the present invention, still, the present invention is not limited thereto, any those skilled in the art can think variation all should fall into protection scope of the present invention.

Claims (11)

1. a switching handling method is characterized in that, may further comprise the steps:
The target service Access Network Target ASN that mobile terminal MS is about to switch to obtains sequence number SN ' and the sequence number SN that service business Access Network ServingASN does not send to last data of said MS of first data of anchor point accessing business network Anchor ASN buffer memory;
Said Target ASN sets up the datum plane that plays said Anchor ASN, and said Anchor ASN sends to said Target ASN with the downlink data of its buffer memory;
Said Target ASN obtains the data between the sequence number SN to SN '-1 from said Serving ASN;
Said Anchor ASN is initiated to the cancellation data path registration process of said Serving ASN;
Said Target ASN sends the data that begin from said sequence number SN to MS.
2. switching handling method according to claim 1 is characterized in that the sequence number SN ' that said Target ASN obtains first data of Anchor ASN buffer memory also comprises before:
Said Target ASN sends the pre-established request of data path to said Anchor ASN.
3. like the said switching handling method of claim 2, it is characterized in that said Target ASN also comprises after said Anchor ASN sends the pre-established request of data path:
After said Anchor ASN receives the pre-established request of data path of said Target ASN transmission; Continuation is sent data to said Serving ASN; The data that buffer memory sends from home agent HA, and the sequence number SN ' of first data of its buffer memory sent to said Target ASN; Or
After said Anchor ASN receives the pre-established request of data path of said Target ASN transmission; Stop to send data to said Serving ASN; The data that buffer memory sends from HA, and the sequence number SN ' of first data of buffer memory sent to said Target ASN.
4. switching handling method according to claim 1 is characterized in that, said Target ASN obtains the sequence number SN that said Serving ASN do not send to last data of said MS and is specially:
Said Target ASN receives the switch acknowledgment message that said Serving ASN sends, and carries the said sequence number SN that does not send to last data of said MS in the said switch acknowledgment message.
5. switching handling method according to claim 1 is characterized in that said Target ASN is specially from the data that said Serving ASN obtains between the sequence number SN to SN '-1:
Said Serving ASN initiatively sends to said Target ASN with the data between the said sequence number SN to SN '-1 through the mode of data forwarding; Or
Said Target ASN triggers said Serving ASN through the data retrieval mode and sends the data between the said sequence number SN to SN '-1 to it.
6. like the said switching handling method of claim 5, it is characterized in that the mode of said Serving ASN through data forwarding initiatively sends to said Target ASN with the data between the said sequence number SN to SN '-1 and be specially:
The size of more said SN ' of said Serving ASN and SN; If said SN ' is greater than SN; Said Serving ASN sends to said Target ASN with the data between the said sequence number SN to SN '-1, otherwise said Serving ASN does not transmit data to said Target ASN.
7. like the said switching handling method of claim 6, it is characterized in that said Serving ASN also comprises before the data between the said sequence number SN to SN '-1 are sent to said Target ASN:
Said Serving ASN and said Target ASN set up data path.
8. like the said switching handling method of claim 5, it is characterized in that said Target ASN triggers said Serving ASN through the data retrieval mode and is specially to the method that it sends the data between the said sequence number SN to SN '-1:
The size of more said SN ' of said Target ASN and SN; If said SN ' is greater than SN; Said Serving ASN sends to said Target ASN with the data between the said sequence number SN to SN '-1, otherwise said Serving ASN does not transmit data to said Target ASN.
9. a switching processing system is characterized in that, comprising:
Mobile terminal MS is used for when switching, sending handoff request to service business Access Network Serving ASN;
Said Serving ASN is used to receive and according to the handoff request that said MS sends, send said MS handoff request to one or more target service Access Network Target ASN; After receiving the switching indication that said MS sends, the sequence number SN of last data that does not send to said MS is sent to the said Target ASN that said MS is about to switch to; And send said sequence number SN to the data between the sequence number SN '-1 of first data to said Target ASN;
Said Target ASN after being used to receive the handoff request of said Serving ASN transmission, is initiated to the pre-established process of data path of anchor point accessing business network Anchor ASN; Obtain sequence number SN ' and the sequence number SN that said Serving ASN does not send to last data of MS of first data of said Anchor ASN buffer memory; Receive the data between the sequence number SN to SN '-1 that said Serving ASN sends; After said MS switches to this equipment, send the data that begin from said sequence number SN to said MS;
Said Anchor ASN is used in the pre-established process of data path, and its data that receive from other entities of buffer memory send to said Target ASN with the sequence number SN ' of first data of buffer memory; After the datum plane of said Anchor ASN was played in said Target ASN foundation, said Anchor ASN sent to said Target ASN with the downlink data of its buffer memory; Said Anchor ASN cancels to the datum plane of said Serving ASN.
10. a target service Access Network Target ASN is characterized in that, comprising:
The pre-established unit of data path is used for after the handoff request that receives service business Access Network Serving ASN transmission, being initiated to the pre-established process of data path of anchor point accessing business network Anchor ASN;
Retransmission unit is used for after the datum plane of said Anchor ASN is played in said Target ASN foundation, being received the downlink data of the buffer memory of said Anchor ASN transmission by said Target ASN; And be used for after mobile terminal MS switches to this equipment, the data forwarding that said Target ASN will obtain to target service Access Network Target ASN from the sequence number SN that does not send to last data of said MS from service business Access Network Serving ASN that said Serving ASN receives between the sequence number SN '-1 of first data of anchor point accessing business network Anchor ASN buffer memory is given said MS.
11. like the said Target ASN of claim 10, it is characterized in that, also comprise:
Comparing unit; Be used for adopting the mode of data retrieval to trigger said ServingASN when it sends data at said Target ASN; The sequence number SN ' of first data of more said Anchor ASN buffer memory and said Serving ASN do not send to the size of sequence number SN of last data of said MS; If said SN ', triggers said Serving ASN greater than SN and sends the data between the said SN to SN '-1 to it, do not send data to it otherwise do not trigger said Serving ASN.
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Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101984709B (en) * 2010-10-19 2014-04-30 中兴通讯股份有限公司 Pre-establishment method of R4 data channel and relay access service network gateway
WO2016101257A1 (en) * 2014-12-26 2016-06-30 华为技术有限公司 Data transmission method and device
CN109246770B (en) 2017-05-05 2021-06-22 华为技术有限公司 Switching method, terminal equipment and network equipment
CN108966293B (en) * 2017-05-18 2020-12-04 大唐移动通信设备有限公司 Base station switching method and device
CN112584450A (en) * 2019-09-30 2021-03-30 大唐移动通信设备有限公司 Anchor point conversion processing method, device and equipment
CN116017594A (en) * 2020-05-11 2023-04-25 华为技术有限公司 Communication method, device and storage medium
CN114258091A (en) * 2020-09-23 2022-03-29 上海诺基亚贝尔股份有限公司 Data lossless handover

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1717091A (en) * 2004-07-02 2006-01-04 现观科技股份有限公司 Method for detecting ping-pong handover effect of cellular network
CN1874594A (en) * 2005-06-01 2006-12-06 华为技术有限公司 Implementation method for switching terminals in wireless communication system
CN1964557A (en) * 2005-11-11 2007-05-16 华为技术有限公司 A data processing method and access equipment during hand-over of mobile station

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1984437A (en) * 2005-12-15 2007-06-20 华为技术有限公司 Method for controlling mobile-platform lossless switch in WiMAX system and telecommunication equipment

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1717091A (en) * 2004-07-02 2006-01-04 现观科技股份有限公司 Method for detecting ping-pong handover effect of cellular network
CN1874594A (en) * 2005-06-01 2006-12-06 华为技术有限公司 Implementation method for switching terminals in wireless communication system
CN1964557A (en) * 2005-11-11 2007-05-16 华为技术有限公司 A data processing method and access equipment during hand-over of mobile station

Non-Patent Citations (2)

* Cited by examiner, † Cited by third party
Title
CN 1717091 A,全文.
US 2006/0003768 A1,全文.

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