WO2011022962A1 - 用于接入服务网络的切换方法及装置 - Google Patents

用于接入服务网络的切换方法及装置 Download PDF

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Publication number
WO2011022962A1
WO2011022962A1 PCT/CN2010/071197 CN2010071197W WO2011022962A1 WO 2011022962 A1 WO2011022962 A1 WO 2011022962A1 CN 2010071197 W CN2010071197 W CN 2010071197W WO 2011022962 A1 WO2011022962 A1 WO 2011022962A1
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WIPO (PCT)
Prior art keywords
channel
asn
dpf
switching
delete
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PCT/CN2010/071197
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English (en)
French (fr)
Inventor
庞在海
曹超
Original Assignee
中兴通讯股份有限公司
Priority date (The priority date 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 date listed.)
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Publication date
Application filed by 中兴通讯股份有限公司 filed Critical 中兴通讯股份有限公司
Priority to EP10811128.7A priority Critical patent/EP2475199A4/en
Publication of WO2011022962A1 publication Critical patent/WO2011022962A1/zh

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Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W36/00—Hand-off or reselection arrangements
    • H04W36/0005—Control or signalling for completing the hand-off
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W36/00—Hand-off or reselection arrangements
    • H04W36/14—Reselecting a network or an air interface
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W36/00—Hand-off or reselection arrangements
    • H04W36/08—Reselecting an access point
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W48/00—Access restriction; Network selection; Access point selection
    • H04W48/08—Access restriction or access information delivery, e.g. discovery data delivery
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W76/00—Connection management
    • H04W76/10—Connection setup

Definitions

  • the present invention relates to the field of communications, and in particular to a handover method and apparatus for accessing a service network.
  • WiMAX Worldwide Interoperability for Microwave Access
  • Figure 1 shows the network architecture diagram of WiMAX, where the CSN (Connected Service Network) is connected to the monthly network, the MS/SS (Mobile Station/Subscriber Station) is the mobile terminal, and the ASN (Access Service Network) is connected to the system.
  • each ASN is connected through the R4 port, and the NSP (Network Service Provider) is the network monthly service provider, NAP (Network Access) Provider ) is a network access provider.
  • ASP Application Service Provider
  • the solid line indicates the bearer plane and the dotted line indicates the control plane.
  • Figure 2 shows the internal structure of the ASN.
  • the AGW ASN Gateway, ASN Convergence Gateway, or ASN-GW
  • the BS Base Station
  • the R6 port consists of a series of The Control Plane and Bearer Plane protocols are used.
  • the AGW further includes an authentication authorization function entity (Authenticator), a channel management function entity DPF (Data Path Function), and a location management function entity PC/LR (Paging Control/Location Register), and the three functional entities may be in the same physical entity. It can also be on different physical entities.
  • Authenticator authentication authorization function entity
  • DPF Data Path Function
  • PC/LR Location Management function entity
  • the BS mainly provides functions such as radio resource management, power measurement and control, and compression and encryption of air interface data.
  • the Authenticator in the AGW mainly provides authentication, authorization, and accounting functions.
  • the DPF mainly provides channel management and assists the establishment of 3 layers between the upper layer and the MS.
  • PC / LR mainly provides location management, paging and other functions;
  • CSN mainly includes home agent HA (Home Agent), dynamic host configuration, DHCP (Dynamic Host Configuration Protocol) server, and recognition ⁇ Authentication Authentication Authentication Authentication Authentication Authentication Authentication Authentication Authentication Authentication Authentication Authentication Authentication Authentication Authentication Authentication Authentication Authentication Authentication Authentication Authentication Authentication Authentication Authentication Authentication Authentication Authentication Authentication Authentication Authentication Authentication Authentication Authentication Authentication Authentication Authentication Authentication Authentication Authentication Authentication Authentication Authentication Authentication Authentication Authentication Authentication Authentication Authentication Authentication Authentication Authentication Authentication Authentication Authentication Authentication Authentication Authentication Authentication Authentication Authentication Authentication Authentication Authentication Authentication Authentication
  • Anchor ASN is the anchor ASN.
  • the Serving BS is the current monthly service BS
  • the Target BS is the target BS of the handover.
  • Figures 3 to 5 show the switching method for the ASN in the related art. The above process is specifically introduced in conjunction with Figures 3-5.
  • 3 is a flow chart of a user performing an intra-ASN handover, including the following steps: Step 301: Perform a channel established between the Serving BS and the DPF before the handover in the Anchor ASN for the user; Step 302, before establishing the data channel before the handover, the Serving BS The message exchanges with the Target BS and the DPF, so that the Serving BS acquires the information of the user.
  • Step 303 The Target BS sends a handover channel establishment request message to the DPF to request to establish a channel.
  • Step 304 The DPF processes the handover channel establishment request message and sends the handover.
  • the channel establishment response message is sent to the Target BS.
  • Step 306 is a channel between the Target BS and the DPF established after the completion of the jt handover.
  • 4 is a flow chart of a user performing cross-ASN handover, including the following steps: Step 401: To switch a channel established between a Serving BS and a DPF in a front Anchor ASN across an ASN; Step 402, before switching to establish a data channel, Serving BS and Target The message exchange between the BS and the DPF is performed, so that the Serving BS acquires the information of the user.
  • Step 403 The Target BS in the Serving ASN sends a handover channel establishment request message to the DPF in the Serving ASN to request to establish a channel.
  • Step 404, in the Serving ASN DPF processes the switching channel setup request message and forwards it The channel establishment request message is switched to the DPF in the Anchor ASN.
  • Step 406 The DPF in the Serving ASN processes the handover channel setup response message, and sends a handover channel setup response message to the Target BS in the Serving ASN, where the message includes the processing result of establishing the channel.
  • Step 407 the Target BS sends the handover in the Serving ASN.
  • the channel establishment confirmation message is sent to the DPF in the Serving ASN.
  • Step 408 The DPF in the Serving ASN processes the handover channel establishment confirmation message, and sends a handover channel establishment confirmation message to the DPF in the Anchor ASN.
  • Step 409 after the completion of the handover The channel is divided into two segments, 409(a) and 409(b). FIG.
  • Step 501 For performing the channel before the handover, the channel is divided into two segments: 501(a) and 501(b); Step 502, before switching Before the data channel is established, the message exchange between the Serving BS and the Target BS and the DPF is performed, so that the Serving BS acquires the information of the user.
  • Step 503 The Target BS sends a handover channel setup message request to the DPF to request to establish a channel.
  • Step 504 DPF processing And requesting and sending a handover channel setup response message to the Target BS.
  • Step 505 The Target BS sends a handover channel establishment confirmation message to the DPF.
  • Step 506 is a channel between the Target BS and the DPF established after the completion of the jt handover.
  • the inventors have found that the switching method for ASN in the related art has the following problems:
  • the DPF may process some of the channel failures due to internal abnormalities or other reasons during the processing of the information carried in the message.
  • the number of channels of the BS and the DPF is inconsistent;
  • the DPF in the Serving ASN receives the handover channel establishment confirmation message of the Target BS (step 407)
  • the DPF processes the information carried in the message, and The result of the processing is notified to the DPF in the Anchor ASN by the channel establishment confirmation message (step 4 408), in which the DPF in the Serving ASN and the DPF in the Anchor ASN may cause partial channel establishment failure due to internal abnormalities or other reasons.
  • the number of channels between the Target BS, the DPF, and the DPF in the Anchor ASN in the Serving ASN is inconsistent;
  • the DPF in the Serving ASN receives the handover channel establishment confirmation message of the Target BS (step 505), the DPF is in the message.
  • some channels may fail to be established due to internal abnormalities or other reasons, which may result in inconsistent channel numbers of the BS and the DPF, and the number of channels on the DPF in the Anchor ASN is also inconsistent;
  • the ASN switching method in the related art has the problem that the number of channels on the ASN network element is inconsistent when performing intra-ASN switching, cross-ASN switching, and Serving ASN switching. The number of channels is inconsistent and not only occupies more ASN networks.
  • the present invention is directed to a handover method and apparatus for accessing a service network, which can solve the problem that the handover method for ASN in the related art is performed in an Anchor ASN handover, an ASN handover, and a Serving ASN handover.
  • the number of channels on the ASN is inconsistent.
  • the number of channels is inconsistent, which not only occupies more ASN network resources, but also causes data packets to be lost. As a result, some services of the user and even the entire service cannot be transmitted.
  • a method for switching an ASN including the following steps: establishing a switching channel for ASN switching; and determining, by the terminating network element of the switching channel, whether the switching channel is abnormally connected; If the abnormal connection is detected, the abnormal NE in the terminating NE notifies the other NEs in the terminating NE to delete the switching channel with abnormal connection.
  • the establishing a switching channel of the ASN switching specifically includes: establishing a first switching channel that is switched within the anchor ASN.
  • whether the terminating network element of the switching channel detects whether the switching channel is abnormally connected comprises: whether the DPF detection of the first switching channel termination fails in the first process of processing the switching channel establishment confirmation message.
  • Switch channels Preferably, in the foregoing method, if the connection abnormality is detected, the abnormal network element in the terminating network element notifies the other network element in the terminating network element to delete the connection abnormality of the connection abnormality, specifically: if the first process exists The failed switching channel, the DPF sends a delete channel request message to the target BS terminated by the first switching channel, and the deleted channel request message includes the failed switching channel in the first process; the target BS deletes the received channel request message according to the received A failed switching channel in the process, and sends a delete channel response message to the DPF; the DPF sends a delete channel acknowledge message to the target BS according to the received delete channel response message.
  • the establishing the switching channel of the ASN switching specifically includes: establishing a second switching channel that is switched across the ASN.
  • the terminating network element of the switching channel detects whether the switching channel is abnormally connected, and specifically includes: the DPF detection in the current serving ASN terminated by the second switching channel is sent by the target BS that processes the second switching channel termination Whether there is a failed channel in the second process of the switching channel establishment confirmation message; the DPF detection in the 4 seeding ASNs of the second switching channel termination is processing the third of the switching channel establishment confirmation message sent by the DPF in the current monthly service ASN Whether there is a failed channel in the process.
  • the abnormal network element in the terminating network element notifies the other network element in the terminating network element to delete the connection abnormality of the connection abnormality, specifically: if the second process exists In the failed switching channel, the DPF in the current serving ASN sends a delete channel request message to the DPF in the target BS and the anchor ASN, and the delete channel request message includes the failed switching channel in the second process; the DPF in the target BS and the anchor ASN is received according to The delete channel request message deletes the failed switch channel in the second process, and sends a delete channel response message to the DPF in the current monthly service ASN; the DPF in the current service ASN sends the target channel and the anchor ASN according to the received delete channel response message.
  • the middle DPF sends a delete channel acknowledgement message.
  • the abnormal network element in the terminating network element notifies the other network element in the terminating network element to delete the connection abnormality of the connection abnormality, specifically: if the third process exists The failed switching channel, the DPF in the anchor ASN sends a delete channel request message to the DPF in the current monthly service ASN, and the delete channel request message includes the failed switching channel in the third process; the DPF in the current monthly service ASN is received according to the data.
  • Delete channel request message deletes the third process failed And switching the channel request message to the target BS; the target BS deletes the failed switching channel in the third process according to the received deletion channel request message, and sends a delete channel response message to the DPF in the current serving ASN; the current service ASN The DPF sends a delete channel response message to the DPF in the anchor ASN; the DPF in the anchor ASN sends a delete channel acknowledge message to the DPF in the current serving ASN according to the received delete channel response message; the DPF in the current service ASN sends a delete channel to the target BS. Confirm the message.
  • the establishing a switching channel of the ASN switching specifically includes: establishing a third switching channel that is switched within the current monthly service ASN.
  • the terminating network element of the switching channel detects whether the switching channel is abnormally connected, and specifically includes: the DPF in the current monthly service ASN terminated by the third switching channel is based on the target of the third switching channel termination
  • the switching channel establishment acknowledgement message sent by the BS detects whether there is a channel in which the target BS fails to process; in the current service ASN, the DPF detects whether there is a failed channel in the fourth process of processing the handover channel establishment confirmation message.
  • the abnormal network element in the terminating network element notifies the other network element in the terminating network element to delete the connection abnormality of the connection abnormality, specifically: if the target BS fails to be processed Channel, the DPF in the current monthly service ASN sends a delete channel request message to the DPF in the anchor ASN, and the delete channel request message includes the channel that the target BS fails to process; the DPF in the anchor ASN deletes the target BS according to the received delete channel request message.
  • the failed channel sends a delete channel response message to the DPF in the current serving ASN; the DPF in the current serving ASN sends a delete channel acknowledge message to the DPF in the anchor ASN according to the received delete channel response message.
  • the abnormal network element in the terminating network element notifies the other network element in the terminating network element to delete the connection abnormality of the connection abnormality, specifically: if the fourth process exists In the failed switching channel, the DPF in the current serving ASN sends a delete channel request message to the DPF in the anchor ASN terminated by the target BS and the third switching channel, and the delete channel request message includes the failed switching channel in the fourth process; the target BS and the anchor
  • the DPF in the fixed ASN deletes the failed switching channel in the fourth process according to the received deletion channel request message, and sends a delete channel response message to the DPF in the current monthly service ASN; the DPF in the current serving ASN receives the deleted channel response message according to the received
  • a switching apparatus for an ASN including: an establishing module, configured to establish a switching channel of an ASN switching; and a detecting module, configured to switch a channel end
  • the network element detects whether the switching channel is abnormally connected.
  • the module is deleted and used to If the connection is abnormal, the abnormal NE in the terminating NE notifies the other NEs in the terminating NE to delete the switching channel with abnormal connection.
  • the foregoing embodiment detects whether the connection of the switching channel is abnormal.
  • the ASN network element that is connected to the switching channel deletes the channel information of the channel to delete the abnormal switching channel.
  • the data channel data consistency between the network elements is effectively ensured, the ASN network resource utilization rate and packet transmission efficiency are improved, and the data service is facilitated. Therefore, the related network element is overcome in the related art for the ASN switching method.
  • the number of channels is inconsistent.
  • the inconsistent number of channels not only occupies more ASN network resources, but also causes data packets to be lost. As a result, some services of the user and even the entire service cannot be transmitted.
  • FIG. 1 shows a network architecture diagram of WiMAX
  • FIG. 2 shows an internal structure diagram of an ASN
  • FIG. 3 shows a flowchart of handover within an Anchor ASN in the related art
  • FIG. 5 is a flowchart showing the handover in the Serving ASN in the related art
  • FIG. 6 is a flowchart showing the handover method according to the first embodiment of the present invention.
  • a flowchart of a handover method according to a second embodiment of the present invention is a flowchart showing a handover method according to a third embodiment of the present invention
  • FIG. 9 shows a fourth embodiment according to the present invention.
  • Flowchart of the switching method Fig. 10 is a block diagram showing the switching device according to the fifth embodiment of the present invention.
  • the method includes the following steps: Step 601: Establish a switching channel for ASN switching; Step 602: Switch a terminating network element of the switching channel to detect a switching channel If the connection is abnormal, step 603: If the abnormal connection is detected, the abnormal network element in the terminating network element notifies the other network element in the terminating network element to delete the switching channel with abnormal connection.
  • Step 601 Establish a switching channel for ASN switching
  • Step 602 Switch a terminating network element of the switching channel to detect a switching channel
  • step 603 If the abnormal connection is detected, the abnormal network element in the terminating network element notifies the other network element in the terminating network element to delete the switching channel with abnormal connection.
  • the ASN network element that is connected to the switching channel can delete the abnormal switching channel by deleting the message interaction of the channel.
  • the data channel data consistency between the network elements is effectively ensured, the ASN network resource utilization rate and packet transmission efficiency are improved, and the data service is facilitated.
  • step 601 specifically includes: establishing a first switching channel that is switched within the Anchor ASN.
  • the user performs the handover within the Anchor ASN, and the first switching channel is established between the Target BS and the DPF in the Anchor ASN.
  • step 4 602 specifically includes: the DPF of the first switching channel termination detects whether there is a failed switching channel in the first process of processing the handover channel establishment confirmation message.
  • the user performs the handover within the Anchor ASN.
  • the DPF receives the handover channel setup confirmation message sent by the Target BS, the DPF processes the message.
  • the internal exception may be For other reasons, some channels fail to be established. Therefore, by detecting whether there is a failed switching channel in the first process, it can be known whether the switching channel is connected abnormally.
  • step 603 specifically includes: if there is a failed switching channel in the first process, the DPF sends a delete channel request message to the Target BS terminated by the first switching channel, and the deleting channel request message includes the first The failing switching channel in the process; the Target BS deletes the failed switching channel in the first process according to the received deleting channel request message, and sends a delete channel response message to the DPF; the DPF sends and deletes the target channel according to the received deleted channel response message.
  • Channel confirmation message In this embodiment, the user performs an Anchor ASN handover, and the DPF detects that there is a failed handover channel in the first process.
  • FIG. 7 is a flowchart of a handover method according to a second embodiment of the present invention.
  • Step 701 Before performing an Anchor ASN handover for a user a channel established between the Serving BS and the DPF;
  • Step 702 Before the data channel is established before the handover, the message exchanges between the Serving BS and the Target BS and the DPF, so that the Serving BS acquires the information of the user;
  • Step 703 The Target BS sends the handover channel to establish Requesting a message to the DPF, requesting to establish a channel;
  • Step 704 processes the handover channel setup request message and sends a handover channel setup response message to the Target BS;
  • Step 705 The Target BS sends a handover channel setup acknowledgement message to the DPF;
  • Step 706, Anchor ASN When the DPF processes the handover channel establishment confirmation message of step 705, if the partial channel processing fails, the failed channel information is sent to the BS through the delete channel request message, and the request channel is deleted.
  • Step 707 the BS that receives the channel deletion request After deleting the channel information of the channel request, the sending channel deletes the response to the DPF in the Anchor ASN.
  • Step 708 The DPF in the Anchor ASN sends a delete channel acknowledgement message to the BS after receiving the delete channel response message, and confirms that the channel deletion is completed.
  • Step 709 a channel between the Target BS and the DPF established after the completion of the handover.
  • step 601 specifically includes: establishing a second switching channel that is switched across the ASN.
  • the user performs the cross-ASN handover, and the second handover channel is divided into two segments, one segment is established between the Target BS and the DPF in the Serving ASN, and the other segment is established in the DPF and the Anchor ASN in the Serving ASN. Between DPF.
  • the step 4 is further configured to: the second process of the DPF in the Serving ASN terminated by the second switching channel to detect the handover channel establishment confirmation message sent by the Target BS that is terminated by the second switching channel Whether there is a failed channel in the second switching channel; the DPF in the Anchor ASN terminated by the second switching channel detects whether there is a failed channel in the third process of processing the switching channel establishment confirmation message sent by the DPF in the Serving ASN.
  • the user performs the cross-ASN handover. After the DPF in the Serving ASN receives the handover channel setup confirmation message sent by the Target BS, the DPF in the Serving ASN processes the message.
  • the partial channel establishment failure may be caused by an internal abnormality or other reasons.
  • the DPF in the Anchor ASN receives the handover channel establishment confirmation message sent by the DPF in the Serving ASN, the DPF in the Anchor ASN processes the message.
  • some channels may fail to be established due to internal abnormalities or other reasons. Therefore, by detecting whether there is a failed switching channel in the second process and the third process, it is known whether the switching channel is connected abnormally.
  • the step 4 603 specifically includes: if there is a failed switching channel in the second process, the DPF in the Serving ASN sends a delete channel request message to the DPF in the Target BS and the Anchor ASN, and deletes the channel request message.
  • the switching channel that fails in the second process is included; the DPF in the target BS and the Anchor ASN deletes the failed switching channel in the second process according to the received deletion channel request message, and sends a delete channel response message to the DPF in the Serving ASN; Serving ASN The DPF sends a delete channel acknowledgement message to the DPF in the Target BS and the Anchor ASN according to the received Delete Channel Response message.
  • the user performs the cross-ASN handover, and the DPF in the Serving ASN detects that there is a failed handover channel in the second process.
  • the DPF in the Serving ASN needs to notify the peer network element Target BS and Anchor of the second handover channel.
  • the DPF in the ASN deletes the failed switching channel, and the DPF in the Serving ASN, the Target BS, and the DPF in the Anchor ASN can achieve the purpose by interacting with the deleted channel message.
  • the step 603 specifically includes: if there is a failed switching channel in the third process, the DPF in the Anchor ASN sends a delete channel request message to the DPF in the Serving ASN, and the deleting the channel request message includes the third process.
  • the failed switching channel; the DPF in the Serving ASN deletes the failed switching channel in the third process according to the received Delete Channel Request message, and sends a Delete Channel Request message to the Target BS; the Target BS deletes the third according to the received Delete Channel Request message.
  • the failed switching channel in the process sends a delete channel response message to the DPF in the Serving ASN.
  • the DPF in the Serving ASN sends a delete channel response message to the DPF in the Anchor ASN.
  • the DPF in the Anchor ASN sends the Delete Channel Response message to the Serving in the Anchor ASN.
  • the DPF sends a delete channel acknowledge message in the ASN; the DPF in the Serving ASN sends a delete channel acknowledge message to the Target BS.
  • the user performs the cross-ASN handover, and the DPF in the Anchor ASN detects that there is a failed handover channel in the third process.
  • the DPF in the Anchor ASN needs to notify the peer network element Target BS and Serving of the second handover channel.
  • the DPF in the ASN deletes the failed switching channel, and the DPF in the Anchor ASN, the Target BS, and the DPF in the Serving ASN can achieve the purpose by interacting with the deleted channel message.
  • Step 801 for switching a channel established between a Serving BS and a DPF in a front Anchor ASN across an ASN; Step 802, before switching to establish a data channel
  • the message is exchanged between the Serving BS and the Target BS and the DPF, so that the Serving BS acquires the information of the user.
  • the DPF in the Serving ASN processes the handover channel setup request message, and forwards the handover channel setup request message to the DPF in the Anchor ASN;
  • Step 805 The DPF in the Anchor ASN processes the handover channel establishment request message, and sends a handover channel setup response message to the DPF in the Serving ASN, where the message includes the processing result of establishing the channel.
  • Step 806 the DPF processing switching channel establishment in the Serving ASN Responding to the message, and sending a handover channel setup response message to the Target BS in the Serving ASN, where the message contains the processing result of establishing the channel;
  • Step 807 the Target BS in the Serving ASN sends a handover channel setup confirmation message to the DPF in the Serving ASN; 808.
  • the DPF in the Serving ASN processes the handover channel setup confirmation message, and sends a handover channel setup acknowledgement message to the DPF in the Anchor ASN.
  • the target BS sent to the Serving ASN (as shown in step 809(a)) and the DPF in the Anchor ASN (as shown in step 809(b)) are requested to delete the channel; Step 810(a), the delete channel request is received.
  • the Target BS in the Serving ASN deletes the channel information of the channel deletion request, it sends a delete channel response to the Serving ASN.
  • Step 810 (b) the DPF in the Anchor ASN receiving the delete channel request deletes the channel information of the deleted channel request, and sends the delete channel response to the DPF in the Serving ASN;
  • Step 811(a) Serving ASN After receiving the delete channel response message of the Target BS in the channel Serving ASN, the DPF sends a delete channel acknowledgement message to the Target BS in the Serving ASN, confirming that the channel deletion is completed;
  • Step 811(b) the DPF receiving channel in the Serving ASN After the DPF delete response message in the Anchor ASN, the channel clear confirmation message is sent to the DPF in the Anchor ASN, and the channel deletion is confirmed.
  • Step 812 when the DPF in the Anchor ASN processes the handover channel establishment confirmation message in step 808, part After the channel processing fails, the channel information that fails to be processed is sent to the DPF in the Serving ASN through the channel deletion request message, and the channel is deleted.
  • Step 813 The DPF in the Serving ASN that receives the channel deletion request deletes the channel information of the channel deletion request. After that, the channel deletion request is sent to the Target BS in the Serving ASN to request deletion.
  • Step 814 After the BS in the Serving ASN that receives the channel deletion request deletes the channel information of the channel deletion request, the sending channel deletes the response to the Target BS in the Serving ASN; Step 815, Receives the Serving ASN of the channel deletion response In the DPF, the sending channel deletes the response to the DPF in the Anchor ASN; Step 816, receives the DPF in the Anchor ASN of the channel deletion response, sends the channel deletion confirmation to the DPF in the Serving ASN, and confirms that the channel deletion is completed; Step 817, To the DPF in the Serving ASN of the channel deletion confirmation, the sending channel deletes the confirmation to the Target BS in the Serving ASN, and confirms that the channel deletion is completed; Step 818, the channel established after the completion of the handover, the channel is divided into 818(a) and 818(b) Two paragraphs.
  • step 601 specifically includes: establishing a third switching channel that is switched within the Serving ASN.
  • the user performs the intra-Servicing ASN handover, and the third handover channel is established between the Target BS and the DPF in the Serving ASN.
  • the step 4 is further configured to: the DPF in the Serving ASN terminated by the third switching channel detects, according to the switching channel establishment confirmation message sent by the Target BS terminated by the third switching channel, whether the Target BS is processed. The failed channel; the DPF in the Serving ASN detects whether there is a failed channel in the fourth process of processing the handover channel setup confirmation message.
  • the user performs the handover in the Serving ASN, and the DPF receives the handover channel establishment confirmation message sent by the Target BS, and the message may include the channel that the Target BS fails to process, and the DPF processes the message, and the DPF processes the message.
  • some channels may fail to be established due to internal abnormalities or other reasons.
  • step 4 603 specifically includes: if there is a channel in which the Target BS fails to process, the DPF in the Serving ASN sends a delete channel request message to the DPF in the Anchor ASN, and the delete channel request message includes the target BS processing failure.
  • the APF in the Anchor ASN deletes the channel that the Target BS fails to process according to the received Delete Channel Request message, and sends a Delete Channel Response message to the DPF in the Serving ASN.
  • the DPF in the Serving ASN sends the Delete Channel Response message to the Anchor.
  • the DPF in the ASN sends a delete channel acknowledgement message.
  • the user performs the intra-Servicing ASN handover, and detects that there is a channel in which the Target BS fails to process.
  • the DPF in the Serving ASN needs to notify that the DPF in the Anchor ASN deletes the failed switching channel, and the DPF in the Serving ASN.
  • the DPF in the Anchor ASN can achieve this by interacting with the above deletion channel message.
  • step 603 specifically includes: if there is a failed switching channel in the fourth process, the DPF in the Serving ASN sends a delete channel request message to the DPF in the Anchor ASN terminated by the Target BS and the third switching channel.
  • the deleting the channel request message includes the switching channel that fails in the fourth process; the DPF in the target BS and the Anchor ASN deletes the failed switching channel in the fourth process according to the received deletion channel request message, and sends the deleted channel response to the DPF in the Serving ASN.
  • the DPF in the Serving ASN sends a delete channel acknowledgement message to the DPF in the Target BS and the Anchor ASN according to the received Delete Channel Response message.
  • the user performs the intra-Servicing ASN handover, and detects that there is a failed handover channel in the fourth process.
  • the DPF in the Serving ASN needs to notify the Target BS in the Serving ASN and the DPF in the Anchor ASN to delete the failed handover channel.
  • the DPF in the Serving ASN, the Target BS, and the DPF in the Anchor ASN can achieve the purpose by interacting with the above deleted channel message.
  • Step 901 the channel is divided into two sections 901(a) and 901(b) for performing the channel before the switching; 902, before the data channel is established before the handover, the message exchange between the Serving BS and the Target BS and the DPF is performed, so that the Serving BS acquires the information of the user.
  • Step 903 The Target BS sends a handover channel setup message request to the DPF to request to establish a channel.
  • Step 904 The DPF processes the request and sends a handover channel setup response message to the Target BS.
  • Step 905 The Target BS sends a handover channel setup confirmation message to the DPF.
  • Step 906 The DPF in the Serving ASN deletes the channel information that fails in step 905.
  • the channel request message is sent to the Target BS in the Serving ASN (as shown in step 906(a)) and the DPF in the Anchor ASN (as shown in step 906(b)) to request channel deletion; step 907(a), received After the target BS in the Serving ASN that deletes the channel request deletes the channel information of the deleted channel request, it sends a delete channel response to the DPF in the Serving ASN.
  • step 907(b) the DPF in the Anchor ASN that receives the delete channel request is deleted. After the channel information of the channel request is deleted, the channel response is sent to the DPF in the Serving ASN.
  • Step 908 (a) the DPF in the Serving ASN receives the delete channel response message of the Target BS in the channel Serving ASN, and sends a delete channel acknowledge message.
  • Step 908 (b) after the DPF in the Serving ASN receives the DPF delete channel response message in the channel Anchor ASN, Remove feed channel acknowledgment message to the Anchor ASN DPF, path deletion confirmation completion; step 909, as jt dagger handover path between the DPF and the Target BS established after completion times.
  • This embodiment makes full use of the related technology to perform the process of switching within the Serving ASN.
  • FIG. 10 is a structural diagram of a switching apparatus according to a fifth embodiment of the present invention, the apparatus comprising: an establishing module 10, configured to establish a switching channel for ASN switching; and a detecting module 20, a terminating network for switching channels The element is configured to detect whether the connection channel is abnormally connected.
  • the deleting module 30 is configured to notify the abnormal network element in the terminating network element to notify the other network element in the terminating network element to delete the switching channel of the connection abnormality if the connection abnormality is detected.
  • the establishing module 10 first establishes a switching channel for ASN switching, and then uses the detecting module 20 to detect whether the connection of the switching channel is abnormal. If there is an abnormal situation, the deleting module 30 uses the message interaction of the deleted channel to achieve
  • the purpose of deleting the abnormal switching channel is to ensure the consistency of the data channel data between the network elements, improve the resource utilization of the ASN network and the transmission efficiency of the message, and facilitate the data service, so the related art is used for the ASN.
  • the switching method has the problem that the number of channels on the related NEs is inconsistent.
  • the number of channels is inconsistent, which not only occupies more ASN network resources, but also causes data to be lost, which causes the user's part of the service or even the entire service to fail to transmit data. .
  • the foregoing embodiments of the present invention effectively ensure the consistency of the data channel data between the network elements, improve the resource utilization of the ASN network and the transmission efficiency of the message, and are beneficial to the data service.
  • the above modules or steps of the present invention can be implemented by a general-purpose computing device, which can be concentrated on a single computing device or distributed over a network composed of multiple computing devices.
  • the invention is not limited to any specific combination of hardware and software.
  • the above is only the preferred embodiment of the present invention, and is not intended to limit the present invention, and various modifications and changes can be made to the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the scope of the present invention are intended to be included within the scope of the present invention.

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Description

用于接 T 良务网格的切换方法 ^^置 技术领域 本发明涉及通信领域， 具体而言， 涉及一种用于接入服务网络的切换方 法及装置。 背景技术 随着移动终端需求发展和无线技术的广泛应用， 4啟波接入全球互操作 WiMAX ( Worldwide Interoperability for Microwave Access ) 这一基于 IEEE802.16标准的无线城域网技术发展得越来越迅猛， 前景越来越广阔。 图 1示出了 WiMAX的网络架构体系图，其中 CSN( Connectivity Service Network ) 为连接月艮务网， MS/SS ( Mobile Station/Subscriber Station ) 为移动 终端， ASN ( Access Service Network, 接入月艮务网络） 为 WiMAX网络系统 中与接入业务相关的功能实体的对应消息流程的集合， 各 ASN之间通过 R4 口连接， NSP ( Network Service Provider )为网络月艮务供应商， NAP ( Network Access Provider ) 为网络接入供应商， ASP ( Application Service Provider ) 为 应用服务供应商， 实线表示承载平面， 虚线表示控制平面。 图 2示出了 ASN的内部结构图， 其中 AGW ( ASN Gateway, ASN汇 聚网关， 也可简写为 ASN-GW ) 和 BS ( Base Station, 基站） 通过内部接口 R6口连接， R6口由一系列的控制平面 （ Control Plane ) 和 载平面 ( Bearer Plane ) 协议构成。
AGW进一步包括认证授权功能实体（ Authenticator ), 通道管理功能实 体 DPF ( Data Path Function ) , 位置管理功能实体 PC/LR ( Paging Control/Location Register ), 这三个功能实体可以在同一个物理实体内， 也可 以在不同的物理实体上。
BS主要提供无线资源管理、 功率测量与控制、 空口数据的压缩和加密 等功能； AGW中 Authenticator主要提供认证， 授权和计费的功能， DPF主 要提供通道管理， 协助高层与 MS之间建立 3层连接等功能， PC/LR主要提 供位置管理， 寻呼等功能； CSN主要包括归属代理 HA ( Home Agent )、 动 态主机配置十办议 DHCP ( Dynamic Host Configuration Protocol )月艮务器， 及认 证 Αί受权 /计费 AAA ( Authentication/ Authorization/Accounting ) 月艮务器等功能 实体， 主要提供计费， 鉴权， 授权， 分配 IP地址、 Internet业务接入等功能。
Serving ASN为当前服务 ASN, Anchor ASN为锚定 ASN。
Serving BS为当前月艮务 BS , Target BS为切换的目标 BS。 图 3 ~ 5示出了相关技术中用于 ASN的切换方法， 下面结合图 3 ~ 5对 上述流程进行针对性的介绍。 图 3为用户进行 Anchor ASN内切换的流程图， 包括以下步骤： 步骤 301 ,为用户进行 Anchor ASN内切换前 Serving BS和 DPF之间建 立的通道； 步骤 302, 切换前建立数据通道前， Serving BS和 Target BS 及 DPF之 间进行消息交互， 以便 Serving BS获取用户的信息； 步骤 303 , Target BS发送切换通道建立请求消息给 DPF, 请求建立通 道； 步骤 304, DPF处理切换通道建立请求消息并发送切换通道建立响应消 息给 Target BS; 步骤 305 , Target BS发送切换通道建立确认消息给 DPF; 步骤 306, 为 jt匕次切换完成后建立的 Target BS与 DPF之间的通道。 图 4为用户进行跨 ASN切换的流程图， 包括以下步骤： 步骤 401 , 为跨 ASN切换前 Anchor ASN中 Serving BS和 DPF之间建 立的通道； 步骤 402, 切换建立数据通道前， Serving BS和 Target BS 及 DPF之间 进行消息交互， 以便 Serving BS获取用户的信息； 步骤 403 , Serving ASN中的 Target BS发送切换通道建立请求消息给 Serving ASN中的 DPF, 请求建立通道； 步骤 404 , Serving ASN中的 DPF处理切换通道建立请求消息， 并转发 切换通道建立请求消息给 Anchor ASN中的 DPF; 步骤 405 , Anchor ASN中的 DPF处理切换通道建立请求消息， 并发送 切换通道建立响应消息给 Serving ASN中的 DPF, 消息中含有建立通道的处 理结果； 步骤 406, Serving ASN中的 DPF处理切换通道建立响应消息， 并发送 切换通道建立响应消息给 Serving ASN中的 Target BS , 消息中含有建立通道 的处理结果； 步骤 407, Serving ASN中的 Target BS发送切换通道建立确认消息给 Serving ASN 中的 DPF; 步骤 408 , Serving ASN中的 DPF处理切换通道建立确认消息， 并发送 切换通道建立确认消息给 Anchor ASN中的 DPF; 步骤 409, 为此次切换完成后建立的通道， 该通道分为 409(a)和 409(b) 两段。 图 5为用户进行 Serving ASN内切换的流程图， 包括以下步骤： 步骤 501 , 为进行此次切换前的通道， 该通道分为 501(a)和 501(b)两段； 步骤 502, 切换前建立数据通道前， Serving BS和 Target BS及 DPF之 间会进行消息交互， 以便 Serving BS获取用户的信息； 步骤 503 , Target BS发送切换通道建立消息请求给 DPF, 请求建立通 道； 步骤 504, DPF处理请求并发送切换通道建立响应消息给 Target BS; 步骤 505 , Target BS发送切换通道建立确认消息给 DPF; 步骤 506, 为 jt匕次切换完成后建立的 Target BS与 DPF之间的通道。 发明人发现相关技术中用于 ASN的切换方法存在以下问题：
1、 用户进行 Anchor ASN内切换（如图 3所示）时， 当 DPF收到 Target
BS的切换通道建立的确认消息（步骤 305 )后， DPF对消息中携带的信息进 行处理的过程中可能由于内部异常或者其他原因导致部分通道建立失败， 进 而导致 BS和 DPF的通道数不一致；
2、 用户进行跨 ASN切换（如图 4所示） 时， 当 Serving ASN中的 DPF 收到 Target BS的切换通道建立确认消息 （步骤 407 ) 后， 该 DPF对消息中 携带的信息进行处理， 并将处理的结果通过通道建立确认消息通知 Anchor ASN中的 DPF(步 4聚 408 ),在此过程中 Serving ASN中的 DPF和 Anchor ASN 中的 DPF可能由于内部异常或者其他原因导致部分通道建立失败，进而导致 Serving ASN中的 Target BS、 DPF及 Anchor ASN中的 DPF三者之间的通道 数不一致；
3、用户发生跨 ASN切换后，在 Serving ASN内进行切换（如图 5所示） 时， 当 Serving ASN中的 DPF收到 Target BS的切换通道建立确认消息 （步 骤 505 ), 该 DPF对消息中携带的信息进行处理的过程中可能由于内部异常 或者其他原因导致部分通道建立失败，进而导致 BS和 DPF的通道数不一致， 并且和 Anchor ASN中的 DPF上的通道数也不一致； 综上所示， 相关技术中用于 ASN的切换方法在进行 Anchor ASN内切 换、 跨 ASN切换、 Serving ASN内切换时， 均存在相关 ASN网元上通道数 不一致的问题， 通道数不一致不仅占用了较多的 ASN 网络资源， 而且导致 数据 4艮文丢失， 从而造成用户的部分业务甚至整个业务无法进行数据传输。 发明内容 本发明旨在提供一种用于接入服务网络的切换方法及装置，能够解决相 关技术中用于 ASN的切换方法在进行 Anchor ASN内切换、 跨 ASN切换、 Serving ASN内切换时， 均存在相关 ASN网元上通道数不一致的问题， 通道 数不一致不仅占用了较多的 ASN 网络资源， 而且导致数据报文丢失， 从而 造成用户的部分业务甚至整个业务无法进行数据传输的问题。 为了实现上述目的， 才艮据本发明的一个方面， 提供了一种用于 ASN的 切换方法， 包括以下步骤： 建立 ASN 切换的切换通道； 切换通道的端接网 元检测切换通道是否连接异常； 如果检测到连接异常， 端接网元中的异常网 元通知端接网元中的其他网元删除连接异常的切换通道。 优选地， 在上述的方法中， 建立 ASN切换的切换通道具体包括： 建立 锚定 ASN内切换的第一切换通道。 优选地， 在上述的方法中， 切换通道的端接网元检测切换通道是否连接 异常具体包括：第一切换通道端接的 DPF检测在处理切换通道建立确认消息 的第一过程中是否存在失败的切换通道。 优选地， 在上述的方法中， 如果检测到连接异常， 端接网元中的异常网 元通知端接网元中的其他网元删除连接异常的切换通道具体包括： 如果在第 一过程中存在失败的切换通道， DPF向第一切换通道端接的目标 BS发送删 除通道请求消息， 删除通道请求消息包括第一过程中失败的切换通道； 目标 BS 才艮据接收到的删除通道请求消息删除第一过程中失败的切换通道， 并向 DPF 发送删除通道响应消息； DPF 根据接收到的删除通道响应消息向目标 BS发送删除通道确认消息。 优选地， 在上述的方法中， 建立 ASN切换的切换通道具体包括： 建立 跨 ASN切换的第二切换通道。 优选地， 在上述的方法中， 切换通道的端接网元检测切换通道是否连接 异常具体包括： 第二切换通道端接的当前服务 ASN中 DPF检测在处理第二 切换通道端接的目标 BS发送的切换通道建立确认消息的第二过程中是否存 在失败的通道； 第二切换通道端接的 4苗定 ASN中 DPF检测在处理当前月艮务 ASN 中 DPF发送的切换通道建立确认消息的第三过程中是否存在失败的通 道。 优选地， 在上述的方法中， 如果检测到连接异常， 端接网元中的异常网 元通知端接网元中的其他网元删除连接异常的切换通道具体包括： 如果在第 二过程中存在失败的切换通道，当前服务 ASN中 DPF向目标 BS和锚定 ASN 中 DPF发送删除通道请求消息 ,删除通道请求消息包括第二过程中失败的切 换通道； 目标 BS和锚定 ASN中 DPF根据接收到的删除通道请求消息删除 第二过程中失败的切换通道， 并向当前月艮务 ASN中 DPF发送删除通道响应 消息； 当前服务 ASN中 DPF根据接收到的删除通道响应消息向目标 BS和 锚定 ASN中 DPF发送删除通道确认消息。 优选地， 在上述的方法中， 如果检测到连接异常， 端接网元中的异常网 元通知端接网元中的其他网元删除连接异常的切换通道具体包括： 如果在第 三过程中存在失败的切换通道， 锚定 ASN中 DPF向当前月艮务 ASN中 DPF 发送删除通道请求消息，删除通道请求消息包括第三过程中失败的切换通道； 当前月艮务 ASN中 DPF才艮据接收到的删除通道请求消息删除第三过程中失败 的切换通道， 并向目标 BS发送删除通道请求消息； 目标 BS根据接收到的删 除通道请求消息删除第三过程中失败的切换通道，并向当前服务 ASN中 DPF 发送删除通道响应消息； 当前服务 ASN中 DPF向锚定 ASN中 DPF发送删 除通道响应消息； 锚定 ASN中 DPF根据接收到的删除通道响应消息向当前 服务 ASN中 DPF发送删除通道确认消息； 当前服务 ASN中 DPF向目标 BS 发送删除通道确认消息。 优选地， 在上述的方法中， 建立 ASN切换的切换通道具体包括： 建立 当前月艮务 ASN内切换的第三切换通道。 优选地， 在上述的方法中， 切换通道的端接网元检测切换通道是否连接 异常具体包括： 第三切换通道端接的当前月艮务 ASN中 DPF才艮据第三切换通 道端接的目标 BS发送的切换通道建立确认消息检测是否存在目标 BS处理失 败的通道； 当前服务 ASN中 DPF检测在处理切换通道建立确认消息的第四 过程中是否存在失败的通道。 优选地， 在上述的方法中， 如果检测到连接异常， 端接网元中的异常网 元通知端接网元中的其他网元删除连接异常的切换通道具体包括： 如果存在 目标 BS处理失败的通道，当前月艮务 ASN中 DPF向锚定 ASN中 DPF发送删 除通道请求消息，删除通道请求消息包括目标 BS处理失败的通道；锚定 ASN 中 DPF根据接收到的删除通道请求消息删除目标 BS处理失败的通道， 并向 当前服务 ASN中 DPF发送删除通道响应消息； 当前服务 ASN中 DPF根据 接收到的删除通道响应消息向锚定 ASN中 DPF发送删除通道确认消息。 优选地， 在上述的方法中， 如果检测到连接异常， 端接网元中的异常网 元通知端接网元中的其他网元删除连接异常的切换通道具体包括： 如果在第 四过程中存在失败的切换通道， 当前服务 ASN中 DPF向目标 BS和第三切 换通道端接的锚定 ASN中 DPF发送删除通道请求消息， 删除通道请求消息 包括第四过程中失败的切换通道； 目标 BS和锚定 ASN中 DPF根据接收到 的删除通道请求消息删除第四过程中失败的切换通道， 并向当前月艮务 ASN 中 DPF发送删除通道响应消息； 当前服务 ASN中 DPF根据接收到的删除通 道响应消息向目标 BS和锚定 ASN中 DPF发送删除通道确认消息。 为了实现上述目的， 才艮据本发明的另一方面， 还提供了一种用于 ASN 的切换装置， 包括： 建立模块， 用于建立 ASN切换的切换通道； 检测模块， 用于切换通道的端接网元检测切换通道是否连接异常； 删除模块， 用于如果 检测到连接异常， 端接网元中的异常网元通知端接网元中的其他网元删除连 接异常的切换通道。 上述实施例在建立 ASN切换的切换通道后， 检测切换通道的连接是否 异常， 若存在异常的情况， 切换通道端接的 ASN 网元则通过删除通道的消 息交互来达到删除异常切换通道的目的， 有效保证了各网元间的数据通道数 据的一致性， 提高了 ASN 网络资源利用率及报文传输效率， 有利于从事数 据业务， 所以克服了相关技术中用于 ASN 的切换方法存在相关网元上通道 数不一致的问题， 通道数不一致不仅占用了较多的 ASN 网络资源， 而且导 致数据报文丢失， 从而造成用户的部分业务甚至整个业务无法进行数据传输 的问题。 附图说明 此处所说明的附图用来提供对本发明的进一步理解，构成本申请的一部 分， 本发明的示意性实施例及其说明用于解释本发明， 并不构成对本发明的 不当限定。 在附图中： 图 1示出了 WiMAX的网络架构体系图； 图 2示出了 ASN的内部结构图； 图 3示出了相关技术中 Anchor ASN内切换的流程图； 图 4示出了相关技术中跨 ASN切换的流程图； 图 5示出了相关技术中 Serving ASN内切换的流程图； 图 6示出了才艮据本发明第一实施例的切换方法的流程图； 图 7示出了根据本发明第二实施例的切换方法的流程图； 图 8示出了才艮据本发明第三实施例的切换方法的流程图； 图 9示出了才艮据本发明第四实施例的切换方法的流程图； 图 10示出了才艮据本发明第五实施例的切换装置的结构图。 具体实施方式 下面将参考附图并结合实施例， 来详细说明本发明。 图 6示出了才艮据本发明第一实施例的切换方法的流程图，该方法包括以 下步骤： 步骤 601 , 建立 ASN切换的切换通道； 步骤 602, 切换通道的端接网元检测切换通道是否连接异常； 步骤 603 , 如果检测到连接异常， 端接网元中的异常网元通知端接网元 中的其他网元删除连接异常的切换通道。 本实施例在建立 ASN切换的切换通道后， 检测切换通道的连接是否异 常， 若存在异常的情况， 切换通道端接的 ASN 网元则通过删除通道的消息 交互来达到删除异常切换通道的目的， 有效保证了各网元间的数据通道数据 的一致性， 提高了 ASN 网络资源利用率及报文传输效率， 有利于从事数据 业务， 所以克服了相关技术中用于 ASN 的切换方法存在相关网元上通道数 不一致的问题， 通道数不一致不仅占用了较多的 ASN 网络资源， 而且导致 数据 4艮文丢失， 从而造成用户的部分业务甚至整个业务无法进行数据传输的 问题。 优选地， 在上述的方法中， 步骤 601具体包括： 建立 Anchor ASN内切 换的第一切换通道。 本实施例为用户进行 Anchor ASN内切换的情况， 第一 切换通道建立在 Anchor ASN中的 Target BS与 DPF之间。 优选地， 在上述的方法中， 步 4聚 602 具体包括： 第一切换通道端接的 DPF检测在处理切换通道建立确认消息的第一过程中是否存在失败的切换通 道。 本实施例为用户进行 Anchor ASN内切换的情况，在 DPF接收到 Target BS 发送过来的切换通道建立确认消息后， DPF对该消息进行处理， 在此处 理的第一过程中， 可能由于内部异常或者其他原因导致部分通道建立失败， 故通过检测第一过程中是否存在失败的切换通道， 即可得知切换通道是否连 接异常。 优选地， 在上述的方法中， 步骤 603具体包括： 如果在第一过程中存在 失败的切换通道， DPF向第一切换通道端接的 Target BS发送删除通道请求 消息， 删除通道请求消息包括第一过程中失败的切换通道； Target BS根据接 收到的删除通道请求消息删除第一过程中失败的切换通道，并向 DPF发送删 除通道响应消息； DPF根据接收到的删除通道响应消息向 Target BS发送删 除通道确认消息。 本实施例为用户进行 Anchor ASN内切换，且 DPF检测到第一过程中存 在失败的切换通道的情况， 此时 DPF 需要通知第一切换通道的对端网元 Target BS删除该失败的切换通道， DPF和 Target BS之间通过上述删除通道 消息的交互可实现该目的。 图 7示出了才艮据本发明第二实施例的切换方法的流程图，此实施例为用 户进行 Anchor ASN内切换的情况， 具体包括以下步骤： 步骤 701 ,为用户进行 Anchor ASN内切换前 Serving BS和 DPF之间建 立的通道； 步骤 702, 切换前建立数据通道前， Serving BS和 Target BS及 DPF之 间进行消息交互， 以便 Serving BS获取用户的信息； 步骤 703 , Target BS发送切换通道建立请求消息给 DPF, 请求建立通 道； 步骤 704, DPF处理切换通道建立请求消息并发送切换通道建立响应消 息给 Target BS; 步骤 705 , Target BS发送切换通道建立确认消息给 DPF; 步骤 706, Anchor ASN中的 DPF对步骤 705的切换通道建立确认消息 进行处理时， 部分通道处理失败， 则将失败的通道信息通过删除通道请求消 息发送给 BS , 请求通道删除； 步骤 707,收到通道删除请求的 BS把删除通道请求的通道信息删除后， 发送通道删除响应给 Anchor ASN中的 DPF; 步骤 708 , Anchor ASN中的 DPF收到删除通道响应消息后发送删除通 道确认消息给 BS , 确认通道删除完成； 步骤 709, 为此次切换完成后建立的 Target BS与 DPF之间的通道。 本实施例充分利用了相关技术进行 Anchor ASN内切换的流程， 通过增 加网元间的删除通道的消息交互来保证各网元间数据通道的数据的一致性， 易于实现， 避免了因通道个数不一致导致的用户的部分业务不通的后果， 同 时节省了部分 ASN中多余的通道占用的网络资源。 优选地， 在上述的方法中， 步骤 601具体包括： 建立跨 ASN切换的第 二切换通道。 本实施例为用户进行跨 ASN 切换的情况， 第二切换通道， 分 为两段， 一段建立在 Serving ASN中的 Target BS与 DPF之间， 另一段建立 在 Serving ASN中的 DPF与 Anchor ASN中的 DPF之间。 优选地， 在上述的方法中， 步 4聚 602 具体包括： 第二切换通道端接的 Serving ASN中 DPF检测在处理第二切换通道端接的 Target BS发送的切换通 道建立确认消息的第二过程中是否存在失败的通道； 第二切换通道端接的 Anchor ASN中 DPF检测在处理 Serving ASN中 DPF发送的切换通道建立确 认消息的第三过程中是否存在失败的通道。 本实施例为用户进行跨 ASN切换的情况， 当 Serving ASN中 DPF接收 到 Target BS发送过来的切换通道建立确认消息后， Serving ASN中 DPF对该 消息进行处理， 在此处理的第二过程中， 可能由于内部异常或者其他原因导 致部分通道建立失败； 此夕卜， 当 Anchor ASN中 DPF接收到 Serving ASN中 DPF发送过来的切换通道建立确认消息后， Anchor ASN中 DPF对该消息进 行处理， 在此处理的第三过程中， 可能由于内部异常或者其他原因导致部分 通道建立失败，故通过检测第二过程和第三过程中是否存在失败的切换通道， 即可得知切换通道是否连接异常。 优选地， 在上述的方法中， 步 4聚 603具体包括： 如果在第二过程中存在 失败的切换通道， Serving ASN中 DPF向 Target BS和 Anchor ASN中 DPF 发送删除通道请求消息，删除通道请求消息包括第二过程中失败的切换通道； Target BS和 Anchor ASN中 DPF根据接收到的删除通道请求消息删除第二过 程中失败的切换通道， 并向 Serving ASN 中 DPF发送删除通道响应消息； Serving ASN中 DPF才艮据接收到的删除通道响应消息向 Target BS和 Anchor ASN中 DPF发送删除通道确认消息。 本实施例为用户进行跨 ASN切换， 且 Serving ASN中 DPF检测到第二 过程中存在失败的切换通道的情况， 此时 Serving ASN中 DPF需要通知第二 切换通道的对端网元 Target BS和 Anchor ASN中 DPF删除该失败的切换通 道， Serving ASN中 DPF、 Target BS和 Anchor ASN中 DPF之间通过上述删 除通道消息的交互可实现该目的。 优选地， 在上述的方法中， 步骤 603具体包括： 如果在第三过程中存在 失败的切换通道， Anchor ASN中 DPF向 Serving ASN中 DPF发送删除通道 请求消息， 删除通道请求消息包括第三过程中失败的切换通道； Serving ASN 中 DPF根据接收到的删除通道请求消息删除第三过程中失败的切换通道，并 向 Target BS发送删除通道请求消息； Target BS根据接收到的删除通道请求 消息删除第三过程中失败的切换通道， 并向 Serving ASN中 DPF发送删除通 道响应消息； Serving ASN中 DPF向 Anchor ASN中 DPF发送删除通道响应 消息； Anchor ASN中 DPF才艮据接收到的删除通道响应消息向 Serving ASN 中 DPF发送删除通道确认消息； Serving ASN中 DPF向 Target BS发送删除 通道确认消息。 本实施例为用户进行跨 ASN切换， 且 Anchor ASN中 DPF检测到第三 过程中存在失败的切换通道的情况， 此时 Anchor ASN中 DPF需要通知第二 切换通道的对端网元 Target BS和 Serving ASN中 DPF删除该失败的切换通 道， Anchor ASN中 DPF、 Target BS和 Serving ASN中 DPF之间通过上述删 除通道消息的交互可实现该目的。 图 8示出了才艮据本发明第三实施例的切换方法的流程图； 步骤 801 , 为跨 ASN切换前 Anchor ASN中 Serving BS和 DPF之间建 立的通道； 步骤 802, 切换建立数据通道前， Serving BS和 Target BS 及 DPF之间 进行消息交互， 以便 Serving BS获取用户的信息； 步骤 803 , Serving ASN中的 Target BS发送切换通道建立请求消息给 Serving ASN中的 DPF, 请求建立通道； 步骤 804, Serving ASN中的 DPF处理切换通道建立请求消息， 并转发 切换通道建立请求消息给 Anchor ASN中的 DPF; 步骤 805 , Anchor ASN中的 DPF处理切换通道建立请求消息， 并发送 切换通道建立响应消息给 Serving ASN中的 DPF, 消息中含有建立通道的处 理结果； 步骤 806, Serving ASN中的 DPF处理切换通道建立响应消息， 并发送 切换通道建立响应消息给 Serving ASN中的 Target BS , 消息中含有建立通道 的处理结果； 步骤 807, Serving ASN中的 Target BS发送切换通道建立确认消息给 Serving ASN 中的 DPF; 步骤 808, Serving ASN中的 DPF处理切换通道建立确认消息， 并发送 切换通道建立确认消息给 Anchor ASN中的 DPF; 步骤 809, Serving ASN中的 DPF将步骤 807中处理失败的通道信息通 过删除通道请求消息分别发送给 Serving ASN中的 Target BS (如步骤 809(a) 所示） 和 Anchor ASN中的 DPF (如步骤 809(b)所示） 请求通道删除； 步骤 810(a), 收到删除通道请求的 Serving ASN中的 Target BS把通道 删除请求的通道信息删除后， 发送删除通道响应给 Serving ASN中的 DPF; 步骤 810(b),收到删除通道请求的 Anchor ASN中的 DPF把删除通道请 求的通道信息删除后， 发送删除通道响应给 Serving ASN中的 DPF; 步骤 811(a), Serving ASN中的 DPF收到通道 Serving ASN中的 Target BS 的删除通道响应消息后， 发送删除通道确认消息给 Serving ASN中的 Target BS , 确认通道删除完成； 步骤 811(b), Serving ASN中的 DPF收到通道 Anchor ASN中的 DPF的 删除响应消息后， 发送通道删除确认消息给 Anchor ASN中的 DPF, 确认通 道删除完成； 步骤 812, Anchor ASN中的 DPF对步骤 808的切换通道建立确认消息 进行处理时， 部分通道处理失败后， 将处理失败的通道信息通过通道删除请 求消息发送给 Serving ASN 中的 DPF, 请求通道删除； 步骤 813 ,收到通道删除请求的 Serving ASN中的 DPF把通道删除请求 的通道信息删除后，发送通道删除请求给 Serving ASN中的 Target BS请求删 除通道; 步骤 814, 收到通道删除请求的 Serving ASN中的 BS把通道删除请求 的通道信息删除后， 发送通道删除响应给 Serving ASN中的 Target BS; 步骤 815 , 收到通道删除响应的 Serving ASN中的 DPF, 发送通道删除 响应给 Anchor ASN中的 DPF; 步骤 816, 收到通道删除响应的 Anchor ASN中的 DPF, 发送通道删除 确认给 Serving ASN中的 DPF , 确认通道删除完成； 步骤 817, 收到通道删除确认的 Serving ASN中的 DPF, 发送通道删除 确认给 Serving ASN中的 Target BS , 确认通道删除完成； 步骤 818, 为此次切换完成后建立的通道， 该通道分为 818(a)和 818(b) 两段。 本实施例充分利用了相关技术进行跨 ASN切换的流程， 通过增加网元 间的删除通道的消息交互来保证各网元间数据通道的数据的一致性， 易于实 现， 避免了因通道个数不一致导致的用户的部分业务不通的后果， 同时节省 了部分 ASN中多余的通道占用的网络资源。 优选地， 在上述的方法中， 步骤 601具体包括： 建立 Serving ASN内切 换的第三切换通道。 本实施例为用户进行 Serving ASN内切换的情况， 第三 切换通道建立在 Serving ASN中的 Target BS与 DPF之间。 优选地， 在上述的方法中， 步 4聚 602 具体包括： 第三切换通道端接的 Serving ASN中 DPF根据第三切换通道端接的 Target BS发送的切换通道建立 确认消息检测是否存在 Target BS处理失败的通道； Serving ASN中 DPF检测 在处理切换通道建立确认消息的第四过程中是否存在失败的通道。 本实施例为用户进行 Serving ASN内切换的情况， DPF接收 Target BS 发送过来的切换通道建立确认消息， 该消息中可能包括有 Target BS处理失 败的通道， DPF对该消息进行处理， 在此处理的第四过程中， 可能由于内部 异常或者其他原因导致部分通道建立失败， 故通过检测是否存在 Target BS 处理失败的通道以及第四过程中是否存在失败的切换通道， 即可得知切换通 道是否连接异常。 优选地， 在上述的方法中， 步 4聚 603具体包括： 如果存在 Target BS处 理失败的通道， Serving ASN中 DPF向 Anchor ASN中 DPF发送删除通道请 求消息， 删除通道请求消息包括 Target BS处理失败的通道； Anchor ASN中 DPF根据接收到的删除通道请求消息删除 Target BS处理失败的通道， 并向 Serving ASN中 DPF发送删除通道响应消息； Serving ASN中 DPF才艮据接收 到的删除通道响应消息向 Anchor ASN中 DPF发送删除通道确认消息。 本实施例为用户进行 Serving ASN内切换， 且检测到存在 Target BS处 理失败的通道的情况， 此时， Serving ASN中 DPF需要通知， Anchor ASN中 DPF删除该失败的切换通道， Serving ASN中 DPF和 Anchor ASN中 DPF之 间通过上述删除通道消息的交互可实现该目的。 优选地， 在上述的方法中， 步骤 603具体包括： 如果在第四过程中存在 失败的切换通道， Serving ASN中 DPF向 Target BS和第三切换通道端接的 Anchor ASN中 DPF发送删除通道请求消息， 删除通道请求消息包括第四过 程中失败的切换通道； Target BS和 Anchor ASN中 DPF根据接收到的删除通 道请求消息删除第四过程中失败的切换通道， 并向 Serving ASN中 DPF发送 删除通道响应消息； Serving ASN中 DPF根据接收到的删除通道响应消息向 Target BS和 Anchor ASN中 DPF发送删除通道确认消息。 本实施例为用户进行 Serving ASN内切换， 且检测到第四过程中存在失 败的切换通道的情况， 此时 Serving ASN中 DPF需要通知 Serving ASN中 Target BS以及 Anchor ASN中 DPF删除该失败的切换通道， Serving ASN中 DPF、 Target BS和 Anchor ASN中 DPF之间通过上述删除通道消息的交互可 实现该目的。 图 9示出了才艮据本发明第四实施例的切换方法的流程图； 步骤 901 , 为进行此次切换前的通道， 该通道分为 901(a)和 901(b)两段； 步骤 902, 切换前建立数据通道前， Serving BS和 Target BS及 DPF之 间会进行消息交互， 以便 Serving BS获取用户的信息； 步骤 903 , Target BS发送切换通道建立消息请求给 DPF, 请求建立通 道； 步骤 904, DPF处理请求并发送切换通道建立响应消息给 Target BS; 步骤 905 , Target BS发送切换通道建立确认消息给 DPF; 步骤 906, Serving ASN中的 DPF将步骤 905中处理失败的通道信息通 过删除通道请求消息分别发送给 Serving ASN中的 Target BS (如步骤 906(a) 所示） 和 Anchor ASN中的 DPF (如步骤 906(b)所示） 请求通道删除； 步骤 907(a), 收到删除通道请求的 Serving ASN中的 Target BS把删除 通道请求的通道信息删除后， 发送删除通道响应给 Serving ASN中的 DPF; 步骤 907(b),收到删除通道请求的 Anchor ASN中的 DPF把删除通道请 求的通道信息删除后， 发送删除通道响应给 Serving ASN中的 DPF; 步骤 908(a) , Serving ASN中的 DPF收到通道 Serving ASN中的 Target BS 的删除通道响应消息后发送删除通道确认消息给 Serving ASN 中的 Target BS , 确认通道删除完成； 步骤 908(b), Serving ASN中的 DPF收到通道 Anchor ASN中的 DPF的 删除通道响应消息后发送删除通道确认消息给 Anchor ASN中的 DPF, 确认 通道删除完成； 步骤 909, 为 jt匕次切换完成后建立的 Target BS与 DPF之间的通道。 本实施例充分利用了相关技术进行 Serving ASN内切换的流程， 通过增 加网元间的删除通道的消息交互来保证各网元间数据通道的数据的一致性， 易于实现， 避免了因通道个数不一致导致的用户的部分业务不通的后果， 同 时节省了部分 ASN中多余的通道占用的网络资源。 图 10示出了才艮据本发明第五实施例的切换装置的结构图，该装置包括： 建立模块 10, 用于建立 ASN切换的切换通道； 检测模块 20, 用于切换通道的端接网元检测切换通道是否连接异常； 删除模块 30, 用于如果检测到连接异常， 端接网元中的异常网元通知 端接网元中的其他网元删除连接异常的切换通道。 本实施例首先釆用建立模块 10建立 ASN切换的切换通道，然后釆用检 测模块 20 检测切换通道的连接是否异常， 若存在异常的情况， 则釆用删除 模块 30 通过删除通道的消息交互来达到删除异常切换通道的目的， 有效保 证了各网元间的数据通道数据的一致性， 提高了 ASN 网络资源利用率及报 文传输效率， 有利于从事数据业务， 所以克服了相关技术中用于 ASN 的切 换方法存在相关网元上通道数不一致的问题， 通道数不一致不仅占用了较多 的 ASN 网络资源， 而且导致数据 4艮文丢失， 从而造成用户的部分业务甚至 整个业务无法进行数据传输的问题。 从以上的描述中， 可以看出， 本发明上述的实施例有效保证了各网元间 的数据通道数据的一致性， 提高了 ASN 网络资源利用率及报文传输效率， 有利于从事数据业务。 显然， 本领域的技术人员应该明白， 上述的本发明的各模块或各步骤可 以用通用的计算装置来实现， 它们可以集中在单个的计算装置上， 或者分布 在多个计算装置所组成的网络上， 可选地， 它们可以用计算装置可执行的程 序代码来实现， 从而， 可以将它们存储在存储装置中由计算装置来执行， 或 者将它们分别制作成各个集成电路模块， 或者将它们中的多个模块或步骤制 作成单个集成电路模块来实现。 这样， 本发明不限制于任何特定的硬件和软 件结合。 以上所述仅为本发明的优选实施例而已， 并不用于限制本发明， 对于本 领域的技术人员来说， 本发明可以有各种更改和变化。 凡在本发明的 ^"神和 原则之内， 所作的任何修改、 等同替换、 改进等， 均应包含在本发明的保护 范围之内。

Claims

权 利 要 求 书
1. 一种用于接入月艮务网络 ASN的切换方法， 其特征在于， 包括以下步 4聚： 建立 ASN切换的切换通道；
所述切换通道的端接网元检测所述切换通道是否连接异常； 如果检测到连接异常，所述端接网元中的异常网元通知所述端接网 元中的其他网元删除所述切换通道。
2. 根据权利要求 1所述的方法， 其特征在于， 建立 ASN切换的切换通道包 括：
建立锚定 ASN内切换的第一切换通道。
3. 根据权利要求 2所述的方法， 其特征在于， 所述切换通道的端接网元检 测所述切换通道是否连接异常包括：
所述第一切换通道端接的通道管理功能实体 DPF检测在处理切换通 道建立确认消息的第一过程中是否存在失败的切换通道。
4. 根据权利要求 3所述的方法， 其特征在于， 所述端接网元中的异常网元 通知所述端接网元中的其他网元删除所述切换通道包括：
所述 DPF向所述第一切换通道端接的目标基站 BS发送删除通道请 求消息， 所述删除通道请求消息包括所述第一过程中失败的切换通道； 所述目标 BS才艮据所述删除通道请求消息删除所述第一过程中失败 的切换通道， 并向所述 DPF发送删除通道响应消息；
所述 DPF才艮据所述删除通道响应消息向所述目标 BS发送删除通道 确认消息。
5. 根据权利要求 1所述的方法， 其特征在于， 建立 ASN切换的切换通道包 括：
建立跨 ASN切换的第二切换通道。
6. 根据权利要求 5所述的方法， 其特征在于， 所述切换通道的端接网元检 测所述切换通道是否连接异常包括： 所述第二切换通道端接的当前月艮务 ASN中 DPF检测在处理所述第 二切换通道端接的目标 BS发送的切换通道建立确认消息的第二过程中是 否存在失败的通道；
所述第二切换通道端接的 4苗定 ASN中 DPF检测在处理所述当前月艮 务 ASN中 DPF发送的切换通道建立确认消息的第三过程中是否存在失败 的通道。 根据权利要求 6所述的方法， 其特征在于， 所述端接网元中的异常网元 通知所述端接网元中的其他网元删除连接异常的切换通道包括： 所述当前月艮务 ASN中 DPF向所述目标 BS和所述锚定 ASN中 DPF 发送删除通道请求消息， 所述删除通道请求消息包括所述第二过程中失 败的切换通道；
所述目标 BS和所述锚定 ASN中 DPF根据所述删除通道请求消息 删除所述第二过程中失败的切换通道， 并向所述当前服务 ASN 中 DPF 发送删除通道响应消息；
所述当前服务 ASN中 DPF根据所述删除通道响应消息向所述目标 BS和所述 4苗定 ASN中 DPF发送删除通道确认消息。 根据权利要求 6所述的方法， 其特征在于， 所述端接网元中的异常网元 通知所述端接网元中的其他网元删除连接异常的切换通道包括： 所述锚定 ASN中 DPF向所述当前月艮务 ASN中 DPF发送删除通道 请求消息，所述删除通道请求消息包括所述第三过程中失败的切换通道； 所述当前服务 ASN中 DPF根据所述删除通道请求消息删除所述第 三过程中失败的切换通道， 并向所述目标 BS 发送所述删除通道请求消 息；
所述目标 BS才艮据所述删除通道请求消息删除所述第三过程中失败 的切换通道， 并向所述当前月艮务 ASN中 DPF发送删除通道响应消息； 所述当前月艮务 ASN中 DPF向所述 4苗定 ASN中 DPF发送删除通道 响应消息；
所述锚定 ASN中 DPF根据接收到的所述删除通道响应消息向所述 当前月艮务 ASN中 DPF发送删除通道确认消息；
所述当前服务 ASN中 DPF向所述目标 BS发送删除通道确认消息。
9. 根据权利要求 1所述的方法， 其特征在于， 建立 ASN切换的切换通道包 括：
建立当前月艮务 ASN内切换的第三切换通道。
10. 根据权利要求 9所述的方法， 其特征在于， 所述切换通道的端接网元检 测所述切换通道是否连接异常包括：
所述第三切换通道端接的当前月艮务 ASN中 DPF才艮据所述第三切换 通道端接的目标 BS发送的切换通道建立确认消息检测是否存在所述目标 BS处理失败的通道；
所述当前服务 ASN中 DPF检测在处理所述切换通道建立确认消息 的第四过程中是否存在失败的通道。
11. 根据权利要求 10所述的方法， 其特征在于， 所述端接网元中的异常网元 通知所述端接网元中的其他网元删除连接异常的切换通道包括： 所述当前月艮务 ASN中 DPF向所述 4苗定 ASN中 DPF发送删除通道 请求消息， 所述删除通道请求消息包括所述目标 BS处理失败的通道； 所述锚定 ASN 中 DPF才艮据所述删除通道请求消息删除所述目标 BS处理失败的通道， 并向所述当前月艮务 ASN中 DPF发送删除通道响应 消息；
所述当前服务 ASN中 DPF根据所述删除通道响应消息向所述锚定 ASN中 DPF发送删除通道确认消息。
12. 根据权利要求 10所述的方法， 其特征在于， 所述端接网元中的异常网元 通知所述端接网元中的其他网元删除连接异常的切换通道具体包括： 所述当前月艮务 ASN中 DPF向所述目标 BS和所述第三切换通道端 接的所述锚定 ASN中 DPF发送删除通道请求消息， 所述删除通道请求 消息包括所述第四过程中失败的切换通道；
所述目标 BS和所述锚定 ASN中 DPF根据接收到的所述删除通道 请求消息删除所述第四过程中失败的切换通道， 并向所述当前月艮务 ASN 中 DPF发送删除通道响应消息；
所述当前服务 ASN中 DPF根据接收到的所述删除通道响应消息向 所述目标 BS和所述锚定 ASN中 DPF发送删除通道确认消息。
13. —种用于 ASN的切换装置， 其特征在于， 包括： 建立模块， 用于建立 ASN切换的切换通道； 检测模块， 用于检测所述切换通道是否连接异常; 删除模块， 用于删除连接异常的切换通道。
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