WO2009036632A1 - Accounting method for ultra mobile broadband access network - Google Patents

Accounting method for ultra mobile broadband access network Download PDF

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Publication number
WO2009036632A1
WO2009036632A1 PCT/CN2007/003778 CN2007003778W WO2009036632A1 WO 2009036632 A1 WO2009036632 A1 WO 2009036632A1 CN 2007003778 W CN2007003778 W CN 2007003778W WO 2009036632 A1 WO2009036632 A1 WO 2009036632A1
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WIPO (PCT)
Prior art keywords
paging
access terminal
message
access
sends
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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PCT/CN2007/003778
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English (en)
French (fr)
Inventor
Wei Wang
Ri Yang
Xiaowu Zhao
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ZTE Corp
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ZTE Corp
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Priority to US12/678,972 priority Critical patent/US8107976B2/en
Publication of WO2009036632A1 publication Critical patent/WO2009036632A1/zh
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L12/00—Data switching networks
    • H04L12/28—Data switching networks characterised by path configuration, e.g. LAN [Local Area Networks] or WAN [Wide Area Networks]
    • H04L12/46—Interconnection of networks
    • H04L12/4633—Interconnection of networks using encapsulation techniques, e.g. tunneling
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L12/00—Data switching networks
    • H04L12/66—Arrangements for connecting between networks having differing types of switching systems, e.g. gateways
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W4/00—Services specially adapted for wireless communication networks; Facilities therefor
    • H04W4/24—Accounting or billing
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W88/00—Devices specially adapted for wireless communication networks, e.g. terminals, base stations or access point devices
    • H04W88/18—Service support devices; Network management devices
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W92/00—Interfaces specially adapted for wireless communication networks
    • H04W92/04—Interfaces between hierarchically different network devices
    • H04W92/12—Interfaces between hierarchically different network devices between access points and access point controllers

Definitions

  • the present invention relates to the field of communications, and more particularly to a charging method for a paging procedure for an ultra mobile broadband access network.
  • Ultra Mobile Broadband (UMB) technology is a new technology evolved by CDMA 2000 access technology.
  • the UMB air interface technology can greatly enhance the performance of the CDMA 2000 access technology network, laying the foundation for providing more and more demanding wireless multimedia services to users.
  • the corresponding network is also undergoing new evolution.
  • FIG. 1 is a network structure of an access network supporting UMB technology determined in the prior art.
  • the access gateway (Access Gateway, referred to as AGW) provides an "IP attachment point" required for accessing the data packet network for the Access Terminal (AT). So for AT, AGW is actually the first hop router.
  • Evolved Base Station (eBS) is available on the wireless carrier.
  • the eBS includes an Access Network Route Instance (ANRI).
  • ANRI Access Network Route Instance
  • the eBS can assume zero or more of the following roles: Forward Link Serving eBS (FLSE), Reverse Link Serving eBS (Reverse Link Serving eBS, Referred to as RLSE)> Data Attachment Point (abbreviation, DAP).
  • FLSE Forward Link Serving eBS
  • RLSE Reverse Link Serving eBS
  • DAP Data Attachment Point
  • a DAP is a communication point that communicates with an AGW when it receives forward link data on a bearer plane.
  • the AGW sends the AT-related data and signaling to the DAP.
  • the reverse link data from the AT can be sent to the AGW through the DAP or directly to the AGW by the RLSE.
  • DAP can be relocated to other eBS during the session. For example, when the eBS of the 7- DAP role is no longer a member of the active set.
  • the Session Reference Network Controller (SRNC) is responsible for maintaining the session reference between the AT and the AT.
  • SRNC is also responsible for the idle state tube of the AT. Provides support and provides paging control when the AT is idle.
  • the SRNC contains a session anchor ANRI. It should be noted that SRNC can be implemented in different ways, such as as a separate entity, or with eBS or AGW. If the SRNC is aggregated with the eBS, the two can share an ANRL.
  • the U1 reference point is used to carry the control plane and media plane information between the eBS and the AGW; the U2 reference point is used.
  • the control plane information between the SRNC and the eBS is carried;
  • the U3 reference point is used to carry the control plane and the media plane information between the two eBSs;
  • the U4 reference point is used to carry the control plane information between the SRNCs;
  • the U6 reference point is used to carry the bearer information Control plane information between SRNC and AGW.
  • the billing function is the basic functional requirement of the wireless communication network.
  • An access network that supports UMB should also have such a function.
  • the charging principle of the UMB network is that the eBS sends the charging information of the radio resource to the AGW, and the Authentication Authorization Accounting (AAA) unit sent by the AGW to the core network uniformly generates the user billing for the user. record.
  • the current access network technology includes a charging function in some aspects. For example, when an eBS is removed from a routing set of an AT in a UMB session establishment process, the eBS sends relevant charging information to the AGW. . However, the prior art ignores other situations. That is to say, in the following process or application, there is a lack of interaction of billing information.
  • the charging function is absent.
  • the existing paging procedure of the access base station triggered by the access gateway having data to be sent to the idle access terminal includes the following steps:
  • S202 the connection between AT and FLSE has been closed.
  • AT, SRNC, and eBS4 (DAP) are all idle.
  • eBS4 (DAP) can perform flow control to trigger AGW to cache data.
  • the eBS4 sends an Inter-ANSI Signaling (IAS)-Paging Request message to the SRNC, where the priority of the paging, the flow control state on the AGW, and a marked page are sent.
  • IAS Inter-ANSI Signaling
  • a tag whose area is unknown and requires a temporary response.
  • eBS4 ( DAP ) starts Timer Tpgack - ias, waiting for IAS - Paging Request Reply message.
  • eBS4 (DAP) also starts the timer Tpgreg-ias and waits to receive an IP Tunneling (IPT)-notification message.
  • IPT IP Tunneling
  • the SRNC After receiving the IAS-Paging Request message, the SRNC sends an IAS-Paging Request Reply to the eBS4 (DAP). After receiving the IAS-Paging Request response, eBS4 (DAP) stops the timer Tpgack-ias. If eBS4 (DAP) receives subsequent data and the timer Tpgreg-ias does not time out, eBS4 (DAP) will stop trying to send other IAS-Paging Request messages to SR C.
  • the SRNC determines the paging area i or sends an IAS-page message to each of the AT paging areas i or eBS.
  • ⁇ 3 ⁇ 4l eBSl, eBS2 and eBS3 are all in the paging area.
  • IAS - The "Do you need a local Fanout" field value in the paging message is 0 to indicate that an IAS-See Answer message is not required.
  • the IAS-Paging message also carries the information of the priority of the paging request at the moment when the air interface initiates the paging procedure.
  • S212, eBS1, eBS2, and eBS3 page the AT at a specific channel and time.
  • this procedure assumes that the AT receives the paging sent by eBS1 and initiates the access procedure as a response to the paging, that is, the AT issues a route open request message to eBS1 to open a route with eBS1.
  • the eBS1 After receiving the route open request message, the eBS1 sends an IAS-session information request message with an access indication to the SRNC to request to obtain a copy of the session, and the eBS1 starts the timer Tsir-ias. After receiving the IAS-session information request message with the access identifier, the SRNC stops the timer Tpgreg-iasggi
  • the SRNC sends an IAS-Session Information Response message to the eBS1, where the Access Network Identifier (ANID) of the eBS4 (the DAP of the AT) is included.
  • eBS1 stops the timer Tsir-ias.
  • eBS1 sends a route open accept message to the AT, thereby completing route establishment with the AT.
  • S222, eBS1 completes the key exchange with the AT. This step can be performed in parallel with step S220.
  • AT update and route mapping of eBS1, SRNC After sending the route open accept message to the AT in step S220, the eBS1 notifies all access network routing instances (Access Network Route Instance, called ANRI) and eB S4 in the route set. (AT's previous DAP) It has become the FLSE of AT.
  • ANRI Access Network Route Instance
  • eB S4 eB S4 in the route set.
  • eBS1 sends an IPT-notification message to SR C, indicating that eBS1 is now FLSE.
  • eBSl starts the timer Tnot-ipt.
  • the SRNC After receiving the IPT-notification message, the SRNC sends an IPT-notification response message to the eBS1. After receiving the IPT-Notification Reply message, eBSl stops the timer Tnot-ipt.
  • eBS1 sends an IPT-pass P message to eBS4, indicating that eBS1 is now FLSE.
  • eBSl starts the timer Tnot-ipt.
  • the eBS4 After receiving the IPT-notification message, the eBS4 sends an IPT-notification response message to the eBS1, and the eBS4 stops the timer Tpgreg-ias and enters the connected state. After eBS1 receives the IPT-Notification Answer message, it stops the timer Tnot-ipt.
  • the data on the eBS4 (DAP) will be forwarded to the AT through the eBS1 which is the FLSE at this time.
  • the eBS1 of the FLSE becomes the DAP of the AT.
  • This step can be performed at any time after step S220.
  • the data from the AGW is forwarded to the eBS 1 that has become the DAP.
  • the charging function is also lacking in the existing paging access terminal initiated by the SRNC as a data binding point as shown in FIG. As shown in FIG. 3, the existing access terminal paging process initiated by the SRNC as a data binding point includes the following steps:
  • the SRNC when receiving the data notification of the AT from the AG W, the SRNC is triggered to send a page to the AT. S306.
  • the SRNC sends an IAS-Paging message to each eBS in the AT paging area.
  • the IAS-Paging message carries a reason information element with a value of "normal operation", one for indicating the priority of the paging, whether or not it is needed
  • the SRNC starts a timer Tpgreg- ias for each paging request message sent.
  • S308, eBS1, eBS2, and eBS3 page the AT at the established channel and time.
  • the process stipulates that the AT receives the paging sent by the eBS1 and uses the originating access procedure as the response to the paging, that is, the AT sends a route open request message to the eBS1 to open a route with the eBS1.
  • the eBS1 After receiving the route open request message, the eBS1 sends an IAS-session information request message with an access indication to the SRNC to request to obtain a copy of the session, and the eBS1 starts the timer Tsir-ias. After receiving the IAS-Session Information Request message with the access identifier, the SRNC stops the timer Tpgreg-iaS o
  • the SRNC sends an IAS-Session Information Response message to the eBS1, which includes the tongue information and the ANID of the DAP.
  • eBSl stops the timer Tsir-ias after the IAS- ⁇ tongue information response.
  • step S316 the eBS1 sends a route open accept message to the AT, thereby completing route establishment with the AT.
  • step S318, eBS1 completes the key exchange with the AT. This step can be performed in parallel with step S320.
  • the eBS1 sends an IPT-notification message to the SRNC, indicating that the eBS1 is now FLSE.
  • eBSl starts the timer Tnot-ipt.
  • the SRNC After receiving the IPT-notification message, the SRNC sends an IPT-notification response message to the eBS1, and the DAP stops the timer Tpgreg-ias and enters the connected state. After eBS1 receives the IPT-Notification Answer message, it stops the timer Tnot-ipt.
  • the eBSl/FLSE determines the role of the DAP and establishes a proxy mobile IP binding with the AGW so that data can be passed to the AT. This step can be performed at any time after S314 in the "AN-initiated DAP selection" mode; or in the "AT-assisted DAP switching" mode, at any time after S316.
  • the AT sends a DAP move request message to the eBS1, thereby triggering the initial proxy mobile IP tunnel with the AGW. set up.
  • eBS1 sends a PMIP-registration request message update to the AGW and a proxy mobile IP binding between the AGWs.
  • eBSl starts the timer Trrq-pmip.
  • the AGW sends a PMIP-registration response with a tunnel lifetime to the eBS1 to confirm the update to the binding.
  • the target DAP stops the timer Trrq-pmip.
  • the AT sends a DAP Move Request message at S326, the eBS1 sends a DAP Assign message indicating that the Proxy Mobile IP Tunnel has been established.
  • the eBS1/DAP sends an IPT-notification message to the SRNC and starts the timer Tnot-ipt.
  • This message contains information indicating that eBS1 is the current DAP and also contains the timestamp of the eBS1 used to update the proxy mobile IP tunnel between the AGW and the AGW.
  • the SRNC sends an IPT-Notification Reply message.
  • eBSl/DAP stops the timer Tnot-ipt.
  • the present invention provides a charging method for an ultra mobile broadband access network.
  • a charging method for an ultra mobile broadband access network includes the following steps: S402: When a data binding point or an access gateway triggers a tongue reference network controller to initiate paging to an access terminal, The session reference network controller sends a route inter-instance signaling paging message to each evolved base station in the paging area where the access terminal is located; S404, each evolved base station in the paging area where the access terminal is located responds to the session reference network Requesting by the controller, paging the access terminal; S406, the evolved base station paging to the access terminal establishes a route with the access terminal, and creates an airlink record for the access terminal, to serve the access The access gateway of the terminal sends a charging request (start) message about the access terminal, indicating that the air connection is open; and S408, after receiving the charging request message, the access gateway sends a report to the evolved base station that pages to the access terminal.
  • start charging request
  • the evolved base station that pages the access terminal sends a timer request message to the access gateway, and starts a timer of a specific duration to re-enter the charging response message within a specific period of time.
  • the access gateway sends a charging request message.
  • the evolved base station paging to the access terminal records the information about the radio resources occupied by the access terminal by creating an airlink record for the access terminal, and sends the charging start message in the charging request message to the Access the gateway to show that the air link is open.
  • the invention improves the charging function of the access network supporting the UMB technology, and further improves the performance that the entire network pays great attention to the operator and the user.
  • FIG. 1 is a schematic diagram of a network structure of a UMB access network in the prior art
  • FIG. 2 is a flow chart of a process of paging an access terminal initiated by an evolved base station that is an AGW-triggered data binding point
  • FIG. 3 is a schematic flowchart of a process of paging an access terminal initiated by an SRNC as a data binding point
  • FIG. 1 is a schematic diagram of a network structure of a UMB access network in the prior art
  • FIG. 2 is a flow chart of a process of paging an access terminal initiated by an evolved base station that is an AGW-triggered data binding point
  • FIG. 3 is a schematic flowchart of a process of paging an access terminal initiated by an SRNC as a data binding point
  • FIG. 4 is a charging method for an ultra mobile broadband access network according to an embodiment of the present invention
  • FIG. 5 is a schematic flowchart of a process of paging an access terminal initiated by an evolved base station as a data binding point including the process shown in FIG. 4
  • FIG. 6 is a data binding including the process shown in FIG. Schematic diagram of the process of paging the access terminal initiated by the SRNC. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS
  • FIG. 4 a charging party for an ultra mobile broadband access network according to an embodiment of the present invention is illustrated. Law. As shown in FIG.
  • the charging method includes the following steps: S402: When a data binding point or an access gateway triggers a reference to a network controller to initiate paging to an access terminal, the session reference network controller accesses Each evolved base station in the paging area where the terminal is located sends a signaling inter-instance signaling paging message; S404, each evolved base station in the paging area where the access terminal is located responds to the request of the session reference network controller, and accesses The terminal performs paging; S406, the evolved base station paging to the access terminal establishes a route with the access terminal, creates an airlink record for the access terminal, and sends the relevant connection to the access gateway serving the access terminal.
  • the paging to the access terminal's deduction & station sends a charging request message to the access gateway, and starts a timer of a specific duration to not receive the specific duration.
  • the charging request message is resent to the access gateway, wherein the evolved base station paging to the access terminal creates the air link record for the access terminal to access the radio resources occupied by the access terminal.
  • the information is recorded, and the charging start message is carried in the charging request message to the access gateway to display that the air link is turned on.
  • FIG. 5 an evolved base station as a data binding point including the process shown in FIG. 4 is illustrated.
  • the process of paging the access terminal initiated by the network controller is triggered by the session. As shown in FIG. 5, the process specifically includes the following steps:
  • AT the connection between AT and FLSE has been closed.
  • AT, SRNC, and eBS4 (DAP) are all idle.
  • eBS4 (DAP) can perform flow control to trigger AGW to cache data.
  • the eBS4 (DAP) is triggered to send a page to the AT.
  • eBS4 sends an IAS-Paging Request message to the SRNC, with the priority of the paging, the flow control state on the AGW, and a flag indicating that the paging area is unknown and requires a temporary response.
  • eBS4 (DAP) starts the timer Tpgack_ias, waiting for the IAS-Paging Request Reply message.
  • eBS4 (DAP) also starts the timer Tpgreg-ias, waiting to receive the IPT-notification message.
  • the SR C After receiving the IAS-Paging Request message, the SR C sends an IAS-Paging Request Reply to the eBS4 (DAP).
  • eBS4 (DAP) After receiving the IAS-paging request response, eBS4 (DAP) stops the timer Tpgack-ias. If eBS4 (DAP) receives subsequent data, and the timer Tpgreg-ias does not If there is a timeout, eBS4 (DAP) will stop trying to send other IAS-Paging Request messages to the SRNC.
  • the SRNC determines the paging area and sends an IAS-Paging to each eBS in the AT paging area.
  • ⁇ _set eBS1, eBS2, and eBS3 are all in the paging area.
  • IAS - The "Do you need a local Fanout" field value in the Paging is 0 to indicate that an IAS-Paging Answer message is not required.
  • the IAS-Paging message also carries information on the priority of the paging request at the moment when the air interface initiates the paging procedure.
  • S512, eBS1, eBS2, and eBS3 page the AT at a specific channel and time.
  • the process determines that the AT receives the paging sent by the eBS1 and uses the originating access procedure as the response to the paging, that is, the AT sends a route open request message to the eBS1 to open a route with the eBS1.
  • the eBS 1 After receiving the route open request message, the eBS 1 sends an IAS-session information request message with an access indication to the SRNC to request to obtain a copy of the tongue, and the eBS1 starts the timer Tsir-ias. After receiving the IAS-Session Information Request message with the access identifier, the SRNC stops the timer Tpgreg-iaS o
  • the SRNC sends an IAS-Session Information Response message to the eBS 1 , which includes the session information and the ANID of the eBS4 (the DAP of the AT).
  • eBS1 stops the timer Tsir-ias.
  • eBS1 issues a route open accept message to the AT, thereby completing route establishment with the AT.
  • eBS1 completes the key exchange with the AT. This step can be performed in parallel with step S520.
  • eBS1 creates an airlink record for the AT, and sends a charging request (start) message to the AGW.
  • eBSl starts the timer Tacu.
  • the AGW sends an accounting response message to the eBS1.
  • eBSl stops the timer Tacu after receiving the message.
  • the eBS1 After transmitting the route open accept message to the AT in step S520, the eBS1 notifies all ANRIs and eBS4 (the previous DAP of the AT) in the route set that they have become the FLSE of the AT.
  • eBS1 sends an IPT-notification message to the SRNC, indicating that eBS1 is now FLSE.
  • eBSl starts the timer Tnot-ipt.
  • the SRNC After receiving the IPT-notification message, the SRNC sends an IPT-notification response message to the eBS1. After receiving the IPT-Notification Reply message, eBSl stops the timer Tnot-ipt.
  • eBS1 sends an IPT-notification message to eBS4, indicating that eBS1 is now FLSE.
  • eBSl starts the timer Tnot-ipt.
  • the eBS4 after receiving the IPT-notification message, the eBS4 sends an IPT-notification confirmation message to the eBS1, and the eBS4 stops the timer Tpgreg-ias and enters the connected state. After receiving the IPT-notification certificate, eBSl stops the timer Tnot-ipt.
  • step S540 at this time, the eBS1 of the FLSE becomes the DAP of the AT.
  • This step can be performed at any time after step S520.
  • the access gateway including the process shown in Figure 4 triggers the process of paging the access terminal initiated by the SRNC as a data binding point. As shown in FIG. 6, the process specifically includes the following steps:
  • the SRNC sends an IAS-Paging message to each eBS in the AT paging area.
  • the IAS-Paging message carries a reason information element with a value of "normal operation," a paging control record information element for indicating paging priority, whether a response is required, and a paging process including an air interface.
  • the session state information record information element at the moment.
  • the SRNC starts a timer Tpgreg-ias for each paging message sent.
  • S608 eBS1, eBS2, and eBS3 page the AT at the established channel and time.
  • this procedure assumes that the AT receives the paging sent by the eBS1 and uses the originating access procedure as the response to the paging, that is, the AT issues a route open request message to the eBS1 to open a route with the eBS1.
  • the eBS1 After receiving the route open request message, the eBS1 sends an IAS-session information request message with an access indication to the SRNC to request to obtain a copy of the session, and the eBS1 starts the timer Tsh'-ias. After receiving the IAS-session information request message with the access identifier, the SRNC stops the timer Tpgreg-iaso
  • the SRNC sends an IAS-Session Information Response message to the eBS1, which includes the session information and the ANID of the DAP. After receiving the IAS-session information response, eBS1 stops the timer Tsir-ias.
  • eBS1 issues a route open accept message to the AT, thereby completing route establishment with the AT.
  • step S618, eBS1 completes the key exchange with the AT. This step can be performed in parallel with step S620.
  • eBS1 creates an airlink record for the AT, and sends a charging request (start) message to the AGW.
  • eBSl starts the timer Tacu.
  • the AGW sends an accounting response message to the eBS 1.
  • eBS 1 stops the timer Tacu after receiving the message.
  • the eBS1 sends an IPT-notification message to the SRNC indicating that the eBS1 is now FLSE.
  • eBSl starts the timer Tnot-ipt.
  • the SRNC After receiving the IPT-notification message, the SRNC sends an IPT-notification confirmation message to the eBS1, and the DAP stops the timer Tpgreg-ias and enters the connected state. After receiving the IPT-notification certificate, eBSl stops the timer Tnot-ipt.
  • the eBSl/FLSE determines the role of the DAP and establishes a proxy mobile IP binding with the AGW so that data can be passed to the AT. This step can be performed at any time after S314 in the "DAP selection initiated by AN", or at any time after S316 in the "AT-assisted DAP switching" mode.
  • the AT issues a The DAP Move Request message is sent to eBS1, thereby triggering the establishment of the initial proxy mobile IP tunnel with the AGW.
  • the eBS1 sends a PMIP-Registration Request message update to the AGW and a proxy mobile IP binding between the AGWs.
  • eBSl starts the timer Trrq-pmip.
  • the AGW sends a PMIP-registration response with a tunnel lifetime to the eBS1 to confirm the update to the binding.
  • Target DAP stops timer Tixq-pmip.
  • eBS1 sends a DAP Assign message indicating that the Proxy Mobile IP Tunnel has been established.
  • eBS1 /DAP sends an IPT-notification message to the SRNC and starts the timer Tnot-ipt. This message contains information indicating that eBS1 is the current DAP and also contains the timestamp of the eBS1 used to update the proxy mobile IP tunnel between the AGW and the AGW.
  • the SRKC sends an IPT-Notification Reply message.
  • eBSl/DAP stops the timer Tnot-ipt.
  • the data from the AGW will be sent to the eBS1 that has become the DAP. Since the charging information is very important, in order to ensure that the AGW can accurately calculate the charging information from the eBS, the eBS sets the timer Tacu while transmitting the charging information to the AGW. Among them, the length of the timer Tacu can be flexibly configured. If the charging response message sent by the AGW is not received before the timer expires, the eBS resends the charging request message. After repeating this several times (the specific number of times can be configured in advance), it has not been received, and the eBS gives up. The timer can be used in both the flow involved in the present invention and in any other process involving two billing information.
  • the present invention is directed to the current situation in which UMB-related processes lack the charging process or information in the UMB access network technology, and proposes to increase the information interaction process involving charging in the paging process of the access terminal, thereby improving
  • the above technical process also improves the function of billing UMB access network, which has important network practical significance.

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用于超移动宽带接入网的计费方法 技术领域 本发明涉及通信领域，更具体地涉及一种用于超移动宽带接入网的寻呼 过程中的计费方法。 背景技术 超移动宽带（ Ultra Mobile Broadband,简称 UMB )技术是由 CDMA 2000 接入技术演进的新技术。 UMB 空中接口的诸多技术可以大大提升 CDMA 2000接入技术网络的性能，为向用户提供更多更高要求的无线多媒体业务奠 定了本质基础。 为支持 UMB空中接口的技术， 相应的网络也在进行新的演进。 图 1是 当前技术中确定的支持 UMB技术的接入网的网络结构。 其中： 接入网关（ Access Gateway, 筒称 AGW )为接入终端（ Access Terminal, 简称 AT )提供了接入数据分组网絡所需的 "IP依附点"。 因此对 AT而言， AGW实际上就是第一跳路由器。 演进型基站 ( Evolved Base Station, 简称 eBS )是可以在无线载波上与
AT进行通信的逻辑实体。 对每一个所服务的 AT, eBS都包含一个接入网络 路由实例（Access Network Route Instance, 简称 ANRI )。 对每一个 AT, eBS 都可以承担零个或多个如下的角色：前向链路月良务基站（ Forward Link Serving eBS ,简称 FLSE ),反向链路刀艮务基站（ Reverse Link Serving eBS ,简称 RLSE )> 数据依附点 （Data Attachment Point, 简称、 DAP )。 对 AT而言， DAP是其在承载面上接收前向链路数据时与 AGW进行通 信的通信点。 AGW把与 AT相关的数据和信令发给 DAP。从 AT来的反向链 路数据既可以通过 DAP发给 AGW , 也可以由 RLSE直接发给 AGW。 在考虑性能等因素时， DAP可以在会话存续期间被重定位到其他的 eBS 上。 例如， 当7 担 DAP角色的 eBS不再是激活集成员的时候。 会话参考网格控制器 （Session Reference Network Controller , 简称 SRNC ) 负责维护与 AT之间的会话参考。 SRNC还负责对 AT的空闲状态管 理提供支持， 并在 AT处于空闲状态时提供寻呼控制功能。 对每一个所支持 的 AT, SRNC都包含一个会话锚点 ANRI。 需要注意的是， SRNC可以采用不同的实现方式，如作为一个独立实体、 或和 eBS或 AGW聚合。如果 SRNC与 eBS聚合在一起， 则两者就可以共享 一个 ANRL 在图 1所示的网络结构中， U1参考点用于承载 eBS和 AGW之间的控 制面和媒体面信息； U2参考点用于承载 SRNC和 eBS之间的控制面信息； U3参考点用于承载两个 eBS之间的控制面和媒体面信息； U4参考点用于承 载 SRNC之间的控制面信息； U6参考点用于承载 SRNC和 AGW之间的控 制面信息。 同时， 计费功能是无线通讯网络基本的功能要求。 支持 UMB的接入网 也应该拥有这样的功能。 UMB 网络的计费原则是 eBS将无线资源方面的计 费信息发送给 AGW, 由 AGW发送给核心网的认证授权计费（ Authentication Authorization Accounting , 简称 AAA )单元， 对用户统一产生用户计费 i己录。 当前的接入网技术在一些方面巳经包含有计费的功能， 如一个 UMB会 话建立过程中、 一个 eBS从某个 AT的路由集合中去除的时候， eBS都会向 AGW发送相关的计费信息。但是，现有技术忽略了其他一些情况。也就是说， 在如下的过程或应用中， 缺乏计费信息的交互。 在如图 2 所示的现有的因接入网关有数据要发送给空闲接入终端而触 发的演进基站对接入终端的寻呼过程中就缺少计费功能。 如图 2所示， 现有 的因接入网关有数据要发送给空闲接入终端而触发的演进基站对接入终端的 寻呼过程包括以下步骤：
S202 , AT和 FLSE之间的连接已经关闭。 AT、 SRNC, 和 eBS4 ( DAP ) 都处在空闲状态。 eBS4 ( DAP ) 可以执行流控以触发 AGW緩存数据。 S204 , 当从 AGW收到 AT的数据或数据通知时， eBS4 ( DAP )被触发 发出寻呼。
S206 , eBS4 ( DAP )发出路由实例间信令（ Inter- ANSI Signaling , 简称 IAS ) -寻呼请求消息给 SRNC, 其中带有寻呼的优先级、 AGW上的流控状 态、 以及一个标明寻呼区域未知且需要临时应答的标记。 eBS4 ( DAP )启动 定时器 Tpgack— ias, 等待 IAS -寻呼请求应答消息。 同时， eBS4 ( DAP )还 启动定时器 Tpgreg-ias, 等待接收 IP隧道（ IP Tunneling, 简称 IPT ) -通知 消息。
S208 , 收到 IAS -寻呼请求消息后， SRNC发出 IAS -寻呼请求应答给 eBS4 ( DAP )。 收到 IAS -寻呼请求应答后， eBS4 ( DAP ) 停止定时器 Tpgack-ias。 如果 eBS4 ( DAP ) 收到后续的数据， 并且定时器 Tpgreg-ias没 有超时，则 eBS4( DAP )将停止尝试发送其他的 IAS -寻呼请求消息给 SR C。
S210, SRNC确定寻呼区 i或并发出 IAS一寻呼消息给 AT寻呼区 i或中的 每一个 eBS。 这个流程中^ ¾l eBSl、 eBS2和 eBS3都在寻呼区域中。 IAS - 寻呼消息中的 "是否需要本地 Fanout" 字段值为 0 , 用于表示不需要 IAS-寻 呼应答消息。 此外， IAS -寻呼消息还带有在空口发起寻呼流程的时刻、 寻呼 请求的优先级的信息。
S212, eBSl、 eBS2、 和 eBS3在特定的信道和时刻寻呼 AT。
S214, 这个流程假设 AT收到了由 eBSl发出的寻呼并以发起接入过程 作为对此寻呼的应答， 也即 AT发出路由打开请求消息给 eBSl , 以打开一条 和 eBSl的路由。
S216, 收到路由打开请求消息后， eBSl发出带有接入指示的 IAS -会 话信息请求消息给 SRNC, 以请求获取一份会话的拷贝， 同时 eBSl 启动定 时器 Tsir-ias。 SRNC收到带接入标识的 IAS -会话信息请求消息后， 停止定 时器 Tpgreg-ias„
S218, SRNC发出 IAS -会话信息应答消息给 eBSl , 其中包含 ^舌信 息和 eBS4 ( AT 的 DAP ) 的接入网标识（Access Network Identifier, 简称 ANID )。 eBSl在收到 IAS -会话信息应答后， 停止定时器 Tsir-ias。
S220, eBSl发出路由打开接受消息给 AT,从而完成与 AT的路由建立。 S222, eBSl完成和 AT的密钥交换。这一步可以和步骤 S220并行进行。
S224, AT更新和 eBSl、 SRNC的路由映射。 在步驟 S220发送路由打开接受消息给 AT后， eBSl通知路由集中所有 的接入网络路由实例 （ Access Network Route Instance , 筒称 ANRI )和 eB S4 ( AT的前一个 DAP ) 自己已成为 AT的 FLSE。
S226, eBSl发送 IPT -通知消息给 SR C,指示 eBSl现在已成为 FLSE。 同时 eBSl启动定时器 Tnot-ipt。
S228,收到 IPT -通知消息后， SRNC发送 IPT -通知应答消息给 eBSl。 eBSl收到 IPT -通知应答消息后， 停止定时器 Tnot-ipt。
S230, 才艮据 eBS4的 ANID, eBSl发送 IPT -通 P消息给 eBS4, 指示 eBSl现在已成为 FLSE。 同时 eBSl启动定时器 Tnot-ipt。
S232 , 收到 IPT -通知消息后， eBS4发送 IPT -通知应答消息给 eBS 1 , 同时 eBS4停止定时器 Tpgreg-ias并进入到连接态。 eBSl收到 IPT -通知应 答消息后， 停止定时器 Tnot-ipt。
S234, 如果 AGW没有緩存数据或者 eBS4 ( DAP )上有给 AT的数据， eBS4 ( DAP )上的数据将通过此时是 FLSE的 eBSl转发给 AT。
S236,此时已是 FLSE的 eBSl成为 AT的 DAP。这一步可以在步骤 S220 后的任意时刻进行。 S238 , 从 AGW来的数据被转发到已成为 DAP的 eBS 1。 在如图 3所示的现有的由作为数据绑定点的 SRNC发起的寻呼接入终 端的过程中也缺少计费功能。如图 3所示，现有的由作为数据绑定点的 SRNC 发起的接入终端寻呼过程包括以下步骤：
S302, AT和 FLSE之间的连接已经关闭。 AT和 SRNC都处在空闲状态。 SRNC通过 4巴代理移动 IP隧道（ Proxy Mobile IP, 简称 PMIP )绑定从原来 的 DAP移动到了 SRNC上而成为当前的 DAP, 同时 SRNC请求 AGW緩存 数据。 原来的 DAP已经释放掉分配给 AT的所有资源。
S304, 当从 AG W收到 AT的数据通知时， SRNC被触发向 AT发出寻 呼。 S306 , SRNC发出 IAS -寻呼消息给 AT寻呼区域中的每一个 eBS。 这 个流程中假设 eBSl、 eBS2、 和 eBS3都在寻呼区 J或中。 IAS -寻呼消息带有 一个值为 "正常操作" 的原因信息单元， 一个用于指示寻呼优先级、 是否需 要应答的寻呼控制记录信息单元， 以及一个包含有在空口发起寻呼流程的时 刻的会话状态信息记录信息单元。 SRNC对每一个发出的寻呼请求消息都启 动一个定时器 Tpgreg- ias。
S308, eBSl , eBS2、 和 eBS3在制定的信道和时刻寻呼 AT。 S310, 这个流程支设 AT收到了由 eBSl发出的寻呼并以发起接入过程 做为对此寻呼的应答， 也即 AT发出路由打开请求消息给 eBSl , 以打开一条 和 eBSl的路由。
S312, 收到路由打开请求消息后， eBSl发出带有接入指示的 IAS -会 话信息请求消息给 SRNC, 以请求获取一份会话的拷贝， 同时 eBSl 启动定 时器 Tsir-ias。 SRNC收到带接入标识的 IAS -会话信息请求消息后， 停止定 时器 Tpgreg-iaS o
S314, SRNC发出 IAS -会话信息应答消息给 eBSl , 其中包含^舌信 息和 DAP的 ANID。 eBSl在) 到 IAS - ^舌信息应答后，停止定时器 Tsir-ias。
S316, eBSl发出路由打开接受消息给 AT,从而完成与 AT的路由建立。 S318, eBSl完成和 AT的密钥交换。这一步可以和步骤 S320并行进行。
S320, AT更新和 eBSl、 SRNC的路由映射。
S322, 根据 DAP的 ANID (即 SRNC的 ANID ), eBSl发送 IPT -通知 消息给 SRNC,指示 eBSl现在已成为 FLSE。同时 eBSl启动定时器 Tnot-ipt。
S324,收到 IPT -通知消息后， SRNC发送 IPT -通知应答消息给 eBSl , 同时 DAP停止定时器 Tpgreg-ias并进入到连接态。 eBSl收到 IPT -通知应 答消息后， 停止定时器 Tnot-ipt。 对 "AN发起的 DAP选择" 模式， eBSl/FLSE确定承担 DAP的角色并 建立和 AGW的代理移动 IP绑定，从而使数据可以传递给 AT。这一步在" AN 发起的 DAP选择" 模式下， 可以在 S314后任意时刻进行； 或在 "AT辅助 DAP切换" 模式下， 在 S316后任意时刻进行。 ，
S326, 如果 AT被配置成使用 "AT辅助 DAP切换" 模式， AT发出一 个 DAP移动请求消息给 eBSl ,从而触发和 AGW的初始代理移动 IP隧道的 建立。
S328,对 "AN发起的 DAP选择"模式， eBSl通过向 AGW发送 PMIP- 注册奇求消息更新和 AGW 间的代理移动 IP 绑定。 eBSl 启动定时器 Trrq-pmip。 S330, AGW发送带有隧道生命期的 PMIP-注册回应给 eBSl ,确认对绑 定的更新。 目标 DAP停止定时器 Trrq-pmip。
S332, 如果 AT在 S326发送了 DAP移动请求消息， 则 eBSl发送 DAP 指派消息指示代理移动 IP隧道已经建立完成。
S334, eBSl/DAP发送 IPT-通知消息给 SRNC并启动定时器 Tnot-ipt。 这个消息包含信息用于表明 eBSl是现在的 DAP, 还包含 eBSl用于更新和 AGW间的代理移动 IP隧道的时间戳。
S336, SRNC发送 IPT-通知应答消息。 eBSl/DAP停止定时器 Tnot-ipt。
S338, 从 AGW来的数据将被发给已成为 DAP的 eBSl。
由以上描述可知， 上述流程中都没有相关的计费信息到 AGW的传递， 使得这些流程缺乏支持计费功能， 在现实网络中将是网络的严重缺陷， 也会 给运营商的利益造成严重损害。 发明内容 鉴于以上所述的一个或多个问题，本发明提供了一种用于超移动宽带接 入网的计费方法。 根据本发明实施例的用于超移动宽带接入网的计费方法， 包括以下步 骤： S402 , 当数据绑定点或者接入网关触发 舌参考网络控制器发起对接入 终端的寻呼时， 会话参考网络控制器向接入终端所在的寻呼区域中的每一个 演进基站发出路由实例间信令寻呼消息； S404， 接入终端所在寻呼区域中的 每一个演进基站响应于会话参考网络控制器的请求， 对接入终端进行寻呼； S406, 寻呼到接入终端的演进基站建立与接入终端之间的路由， 并为接入终 端创建空中链路记录， 向服务于接入终端的接入网关发送有关接入终端的计 费请求（开始）消息， 显示空中连接打开； 以及 S408, 接入网关收到计费请 求消息后， 向寻呼到接入终端的演进基站发送计费响应消息。 其中，寻呼到接入终端的演进基站在将计费请求消息发送给接入网关的 同时， 启动特定时长的定时器， 以在特定时长内没有接收到计费响应消息的 情况下， 重新向接入网关发送计费请求消息。 其中，寻呼到接入终端的演进基站通过为接入终端创建空中链路记录来 对有关接入终端占用的无线资源的信息进行记录， 并在计费请求消息中携带 计费开始字样发送至接入网关， 以显示空中链路巳打开。 本发明完善了支持 UMB技术的接入网的计费功能， 进而完善了整个网 络关于计费这个运营商和用户都极为重视的性能。 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是现有技术中的 UMB接入网的网絡结构示意图； 图 2是现有的由作为 AGW触发数据绑定点的演进基站发起的寻呼接入 终端的过程的流程示意图； 图 3是现有的由作为数据绑定点的 SRNC发起的寻呼接入终端的过程 的流程示意图； 图 4 是根据本发明实施例的用于超移动宽带接入网的计费方法的流程 图； 图 5是包含图 4所示过程的作为数据绑定点的演进基站发起的寻呼接入 终端的过程的流程示意图； 以及 图 6是包含图 4所示过程的作为数据绑定点的 SRNC发起的寻呼接入 终端的过程的流程示意图。 具体实施方式 下面参考附图， 详细说明本发明的具体实施方式。 参考图 4, 说明根据本发明实施例的用于超移动宽带接入网的计费方 法。 如图 4所示， 该计费方法包括以下步骤： S402, 当数据绑定点或接入网 关触发^ "参考网络控制器发起对接入终端的寻呼时， 会话参考网络控制器 向接入终端所在的寻呼区域中的每一个演进基站发出路由实例间信令寻呼消 息； S404 , 接入终端所在寻呼区域中的每一个演进基站响应于会话参考网络 控制器的请求， 对接入终端进行寻呼； S406, 寻呼到接入终端的演进基站建 立与接入终端之间的路由， 为接入终端创建空中链路记录， 并向服务于接入 终端的接入网关发送有关接入终端的计费请求（开始）消息； 以及 S408, 接 入网关收到计费请求消息后， 向寻呼到接入终端的演进基站发送计费响应消 息以确认其接收到了计费请求消息。 其中，寻呼到接入终端的演 ϋ&站在将计费请求消息发送给接入网关的 同时， 启动特定时长的定时器， 以在特定时长内没有接收到计费响应消息的 情况下， 重新向接入网关发送计费请求消息。 其中，寻呼到接入终端的演进基站通过为接入终端创建空中链路记录来 对有关接入终端占用的无线资源的信息进行记录， 并在计费请求消息中携带 计费开始字样发送至接入网关， 以显示空中链路已打开。 参考图 5, 说明包含图 4所示过程的作为数据绑定点的演进基站触发会 话参考网络控制器发起的寻呼接入终端的过程。 如图 5所示， 该过程具体包 括以下步骤：
S502, AT和 FLSE之间的连接已经关闭。 AT、 SRNC、 和 eBS4 ( DAP ) 都处在空闲状态。 eBS4 ( DAP )可以执行流控以触发 AGW緩存数据。
S504, 当从 AGW收到 AT的数据或数据通知时， eBS4 ( DAP )被触发 向 AT发出寻呼。
S506, eBS4 ( DAP )发出 IAS -寻呼请求消息给 SRNC, 其中带有寻呼 的优先级、 AGW 上的流控状态、 以及一个标明寻呼区域未知且需要临时应 答的标记。 eBS4 ( DAP )启动定时器 Tpgack— ias， 等待 IAS -寻呼请求应答 消息。 同时， eBS4 ( DAP )还启动定时器 Tpgreg-ias, 等待接收 IPT -通知 消息。
S508, 收到 IAS -寻呼请求消息后， SR C发出 IAS -寻呼请求应答给 eBS4 ( DAP )。 收到 IAS -寻呼请求应答后， eBS4 ( DAP ) 停止定时器 Tpgack-ias. 如果 eBS4 ( DAP )收到后续的数据， 并且定时器 Tpgreg-ias没 有超时，则 eBS4( DAP )将停止尝试发送其他的 IAS -寻呼请求消息给 SRNC。
S510 , SRNC确定寻呼区域并发发出 IAS -寻呼给 AT寻呼区域中的每 —个 eBS。 这个流程中^ _设 eBSl、 eBS2、 和 eBS3都在寻呼区域中。 IAS - 寻呼中的"是否需要本地 Fanout"字段值为 0, 用于表示不需要 IAS-寻呼应答 消息。 此外， IAS-寻呼消息还带有在空口发起寻呼流程的时刻、 寻呼倚求的 优先级的信息。
S512, eBSl、 eBS2、 和 eBS3在特定的信道和时刻寻呼 AT。
S514, 这个流程^设 AT收到了由 eBSl发出的寻呼并以发起接入过程 做为对此寻呼的应答， 也即 AT发出路由打开请求消息给 eBSl， 以打开一条 和 eBSl的路由。
S516, 收到路由打开请求消息后， eBS 1发出带有接入指示的 IAS -会 话信息请求消息给 SRNC, 以请求获取一份^ ^舌的拷贝， 同时 eBSl 启动定 时器 Tsir-ias。 SRNC收到带接入标识的 IAS -会话信息请求消息后， 停止定 时器 Tpgreg-iaS o
S518, SRNC发出 IAS -会话信息应答消息给 eBS 1 , 其中包含会话信 息和 eBS4 ( AT的 DAP )的 ANID。 eBSl在收到 IAS -会话信息应答后， 停 止定时器 Tsir-ias。
S520, eBSl发出路由打开接受消息给 AT,从而完成与 AT的路由建立。
S522, eBSl完成和 AT的密钥交换。这一步可以和步骤 S520并行进行。 S524, AT更新和 eBSl、 SRNC的路由映射。
S526, eBSl 为 AT创建空中链路记录， 并将计费请求（开始） 消息发 送给 AGW。 eBSl启动定时器 Tacu。
S528, AGW发送计费响应消息给 eBSl。 eBSl在收到该消息后停止定 时器 Tacu。 在步骤 S520发送路由打开接受消息给 AT后， eBSl通知路由集中所有 的 ANRI和 eBS4 ( AT的前一个 DAP ) 自己已成为 AT的 FLSE。
S530, eBSl发送 IPT -通知消息给 SRNC,指示 eBSl现在已成为 FLSE。 同时 eBSl启动定时器 Tnot-ipt。
S532,收到 IPT -通知消息后， SRNC发送 IPT -通知应答消息给 eBSl。 eBSl收到 IPT -通知应答消息后， 停止定时器 Tnot-ipt。
S534, 才艮据 eBS4的 ANID, eBSl发送 IPT -通知消息给 eBS4, 指示 eBSl现在已成为 FLSE。 同时 eBSl启动定时器 Tnot-ipt。
S536, 收到 IPT -通知消息后， eBS4发送 IPT -通知证实消息给 eBSl , 同时 eBS4停止定时器 Tpgreg-ias并进入到连接态。 eBSl收到 IPT -通知证 实消息后， 停止定时器 Tnot-ipt。
S538, 如果 AGW没有緩存数据或者 eBS4 ( DAP )上有给 AT的数据， eBS4 ( DAP )上的数据将通过此时是 FLSE的 eBS 1转发给 AT。
S540，此时已是 FLSE的 eBSl成为 AT的 DAP。这一步可以在步骤 S520 后的任意时刻进行。
S542, 从 AGW来的数据被转发到已成为 DAP的 eBSl。 参考图 6, 说明包含图 4 所示过程的接入网关触发作为数据绑定点的 SRNC发起的寻呼接入终端的过程。 如图 6所示， 该过程具体包括以下步骤：
S602, AT和 FLSE之间的连接已经关闭。 AT和 SRNC都处在空闲状态。 SRNC通过 4巴 PMIP 绑定从原来的 DAP移动到了 SRNC上而成为当前的 DAP, 同时 SRNC请求 AGW緩存数据。 原来的 DAP已经释放掉分配给 AT 的所有资源。 S604 , 当从 AGW收到 AT的数据通知时， SRNC被触发向 AT发出寻 呼。
S606， SRNC发出 IAS -寻呼消息给 AT寻呼区域中的每一个 eBS。 这 个流程中假设 eBSl . eBS2、 和 eBS3都在寻呼区域中。 IAS -寻呼消息带有 一个值为"正常操作，，的原因信息单元， 一个用于指示寻呼优先级、 是否需要 应答的寻呼控制记录信息单元， 以及一个包含有空口发起寻呼流程的时刻的 会话状态信息记录信息单元。 SRNC对每一个发出的寻呼消息都启动一个定 时器 Tpgreg-ias S608 , eBSl , eBS2、 和 eBS3在制定的信道和时刻寻呼 AT。
S610, 这个流程假设 AT收到了由 eBSl发出的寻呼并以发起接入过程 做为对此寻呼的应答， 也即 AT发出路由打开请求消息给 eBSl , 以打开一条 和 eBSl的路由。 S612, 收到路由打开请求消息后， eBSl发出带有接入指示的 IAS -会 话信息请求消息给 SRNC, 以请求获取一份会话的拷贝， 同时 eBSl 启动定 时器 Tsh'-ias。 SRNC收到带接入标识的 IAS -会话信息请求消息后， 停止定 时器 Tpgreg-iaso
S614, SRNC发出 IAS -会话信息应答消息给 eBSl , 其中包含会话信 息和 DAP的 ANID。 eBSl在收到 IAS -会话信息应答后，停止定时器 Tsir-ias。
S616, eBSl发出路由打开接受消息给 AT,从而完成与 AT的路由建立。
S618, eBSl完成和 AT的密钥交换。这一步可以和步骤 S620并行进行。
S620, AT更新和 eBSl、 SRNC的路由映射。
S622, eBSl 为 AT创建空中链路记录， 并将计费请求 （开始） 消息发 送给 AGW。 eBSl启动定时器 Tacu。
S624 , AGW发送计费响应消息给 eBS 1。 eBS 1在收到该消息后停止定 时器 Tacu。
S626, 根据 DAP的 ANID (即 SRNC的 ANID ), eBSl发送 IPT -通知 消息给 SRNC,指示 eBSl现在已成为 FLSE。同时 eBSl启动定时器 Tnot-ipt。
S628 ,收到 IPT -通知消息后， SRNC发送 IPT -通知证实消息给 eBSl , 同时 DAP停止定时器 Tpgreg-ias并进入到连接态。 eBSl收到 IPT -通知证 实消息后， 停止定时器 Tnot-ipt。 对" AN发起的 DAP选择"模式， eBSl/FLSE确定承担 DAP的角色并建 立和 AGW的代理移动 IP绑定， 从而使数据可以传递给 AT。 这一步在" AN 发起的 DAP选择，，模式下，可以在 S314后任意时刻进行；或在" AT辅助 DAP 切换"模式下 , 在 S316后任意时刻进行。
S630, 如果 AT被配置成使用 "AT辅助 DAP切换"模式， AT发出一个 DAP移动请求消息给 eBSl， 从而触发和 AGW的初始代理移动 IP隧道的建 立。
S632, 对" AN发起的 DAP选择"模式， eBSl通过向 AGW发送 PMIP- 注册请求消息更新和 AGW 间的代理移动 IP 绑定。 eBSl 启动定时器 Trrq-pmip。
S634, AGW发送带有隧道生命期的 PMIP-注册回应给 eBSl ,确认对绑 定的更新。 目标 DAP停止定时器 Tixq-pmip。
S636, 如果 AT在 S326发送了 DAP移动请求消息， 则 eBSl发送 DAP 指派消息指示代理移动 IP隧道已经建立完成。 S638, eBSl /DAP发送 IPT-通知消息给 SRNC并启动定时器 Tnot-ipt。 这个消息包含信息用于表明 eBSl是现在的 DAP, 还包含 eBSl用于更新和 AGW间的代理移动 IP隧道的时间戳。
S640, SRKC发送 IPT-通知应答消息。 eBSl/DAP停止定时器 Tnot-ipt。
S642, 从 AGW来的数据将被发给已成为 DAP的 eBSl。 由于计费信息非常重要，所以为了保证 AGW能准确 到来自 eBS的计 费信息， eBS在向 AGW发送计费信息的同时设定了定时器 Tacu。 其中， 定 时器 Tacu的长度可灵活配置。如果在该定时器超时之前， 没有收到 AGW发 送的计费响应消息， 则 eBS重新发送计费请求消息。 如此重复若干次（具体 次数可事先配置）之后， 仍没有收到， 则 eBS放弃。 该定时器既可以用在本 发明涉及的流程中， 也可以用在其他任何涉及到两条计费信息的流程中。 综上所述， 本发明针对当前 UMB接入网技术中实现 UMB相关流程缺 乏计费过程或信息的现状， 提出了在接入终端寻呼流程中增加涉及到计费的 信息交互过程， 从而完善了以上技术流程 , 同时也完善了 UMB接入网络实 现计费的功能， 具有重要的网络现实意义。 以上所述仅为本发明的实施例而已， 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。 凡在本发明的精神和原则 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权利要求 范围之内。

Claims

权 利 要 求 书
1. 一种用于超移动宽带接入网的计费方法， 其特征在于， 包括以下步骤：
S402 ,当数据绑定点或接入网关触发^舌参考网络控制器发起对接 入终端的寻呼时， 所述会话参考网络控制器向所述接入终端所在的寻呼 区域中的每一个演进基站发出路由实例间信令寻呼消息；
S404,所述接入终端所在寻呼区域中的每一个演进基站响应于所述 会话参考网络控制器的请求， 对所述接入终端进行寻呼；
S406 ,寻呼到所述接入终端的演进基站建立与所述接入终端之间的 路由， 并向服务于所述接入终端的接入网关发送有关所述接入终端的计 费请求消息； 以及
S408 , 所述接入网关收到所述计费请求消息后， 向寻呼到所述接入 终端的演进基站发送计费响应消息以确认其接收到了所述计费请求消 息。
2. 根据权利要求 1所述的计费方法， 其特征在于， 寻呼到所述接入终端的 演进基站在将所述计费请求消息发送给所述接入网关的同时， 启动特定 时长的定时器，以在特定时长内没有接收到所述计费响应消息的情况下， 重新向所述接入网关发送所述计费请求消息。
3. 根据权利要求 2所述的计费方法， 其特征在于， 寻呼到所述接入终端的 演进基站通过为所述接入终端创建空中链路记录来对有关所述接入终端 占用的无线资源的信息进行记录。
4. 根据权利要求 3所述的计费方法， 其特征在于， 寻呼到所述接入终端的 演进基站为所述接入终端创建空中链路记录， 在所述计费请求消息中携 带计费开始字样发送至所述接入网关， 以显示空中链路已打开。
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