WO2009036634A1 - Procédé de comptabilité destiné à un réseau d'accès mobile à ultra large bande - Google Patents

Procédé de comptabilité destiné à un réseau d'accès mobile à ultra large bande Download PDF

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Publication number
WO2009036634A1
WO2009036634A1 PCT/CN2007/003792 CN2007003792W WO2009036634A1 WO 2009036634 A1 WO2009036634 A1 WO 2009036634A1 CN 2007003792 W CN2007003792 W CN 2007003792W WO 2009036634 A1 WO2009036634 A1 WO 2009036634A1
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WIPO (PCT)
Prior art keywords
session
base station
message
charging
evolved base
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PCT/CN2007/003792
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English (en)
French (fr)
Inventor
Xiaowu Zhao
Wei Wang
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ZTE Corp
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ZTE Corp
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Priority to US12/678,787 priority Critical patent/US8570912B2/en
Publication of WO2009036634A1 publication Critical patent/WO2009036634A1/zh
Anticipated expiration legal-status Critical
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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L12/00—Data switching networks
    • H04L12/02—Details
    • H04L12/14—Charging, metering or billing arrangements specially adapted for data communications, e.g. authentication, authorisation and accounting [AAA] framework

Definitions

  • the present invention relates to the field of communications, and more particularly to a charging method for activating an access terminal session release of an ultra mobile broadband access network.
  • Ultra Mobile Broadband (UMB) technology is a new technology evolved by CDMA 2000 access technology. Many technologies of the UMB air interface 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. In order to support UMB air interface technology, 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 (AGW) provides an Access Point (AT) for the Access Terminal (AT) to access the data packet network. So for AT, AGW is actually the first mega router.
  • Evolved Base Station (eBS) is available on wireless carriers.
  • the logical entity that the AT communicates with For each AT that is served, the eBS includes an Access Network Route Instance (ANRI). For each AT, the eBS can assume zero or more of the following roles: Forward Link Serving eBS (FLSE), Reverse Link Serving eBS (RLSE) Data Attachment Point (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.
  • the Session Reference Network Controller is responsible for maintaining the session reference between the AT and the AT.
  • SR C is also responsible for the idle state of the AT Provides support and provides paging control when the AT is idle.
  • 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 ANRIo.
  • 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/DAP 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. recording.
  • AAA Authentication Authorization Accounting
  • the current access network technology already includes charging functions in some aspects. For example, in a UMB session establishment process, when an eBS is removed from a certain AT's routing set, the eBS/DAP sends the relevant information to the AGW. Billing information. 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 during the release of the existing UMB session initiated by the AT or SRNC as shown in FIG. 2. As shown in FIG. 2, the existing UMB session release process initiated by the AT or the SRNC includes the following steps:
  • the ANRI of S202, AT or AT initiates a UMB session release.
  • _ set the ANRI to SRNC.
  • the SRNC sends an Inter-ANSI Signaling (IAS)-Session Release message to all ANRIs and DAPs in the route set.
  • IAS Inter-ANSI Signaling
  • the SRNC sends an IAS-session release message to the eBS1/FLSE/RLSE, and starts the timer Tsr-ias.
  • the IAS-Session Release message is used to indicate that the SRNC has released the current UMB session, so the eBS1/FLSE/RLSE must release the resources allocated to the AT and clear the UMB session of the AT in the eBS1/FLSE/RLSE.
  • S206 After receiving the IAS- ⁇ tongue release message, the eBS 1/FLSE/RLSE sends an IAS-tongue release response message to the SRNC. The SRNC stops the timer Tsr-ias.
  • the SRNC sends an IAS-Session Release message to the DAP, and starts the timer Tsr-ias.
  • the IAS-Session Release message is used to indicate that the SRNC has released the current UMB session, so the DAP must release the resources allocated to the AT, clear the UMB session of the AT in the DAP, and release the Proxy Mobile IP between the AGW and the DAP (Proxy) Mobile IP, referred to as PMIP) tunnel.
  • the DAP After receiving the IAS-session release message, the DAP sends an IAS-session release response message to the SRNC.
  • SRNC stops the timer Tsr-ias.
  • the DAP After receiving the IAS-Session Release message sent by the SRNC, the DAP sends a PMIP-Registration Request message with a Lifetime field value of 0 to the AGW, and is used to release the PMIP tunnel of the AT between the AGW and the DAP. DAP starts the timer Trrq-pmip.
  • the AGW After receiving the PMIP-registration request message sent by the DAP, the AGW releases the tunnel and sends a PMIP-registration request response message to the DAP. DAP stops the timer Trrq-pmip.
  • the charging function is also lacking during the release of the existing AGW-initiated UMB packet data session as shown in FIG. 3, resulting in the release of the UMB session.
  • the UMB session release process caused by the existing AGW-initiated UMB packet data session release process includes the following steps:
  • the AGW sends a PMIP-registration revocation message to the DAP and starts the timer Trrv.
  • the DAP After receiving the PMIP-registration revocation message, the DAP sends a PMIP-sales response message to the AGW. AGW stops the timer Trrv. S306, it is assumed here that the DAP is not in the route set of the AT.
  • the DAP sends an IAS - Packet Data Session Release message to the SRNC and starts the timer Tpdsr-ias.
  • the IAS - Packet Data Release message is used to indicate that the packet data session has been released.
  • the SRNC After receiving the IAS-Packet Data Session Release message, the SRNC sends an IAS-Packet Data Release Response message to the DAP. The DAP stops the timer Tpdsr-ias. S310. After receiving the IAS-Packet Data Session Release message, the SRNC initiates release of the UMB session. After the SRNC releases the UMB session of the AT, the SRNC must send an IAS-Session Release message to all ANRLs in the route set. S312, the SRNC sends an IAS-tongue release message to eBSl/FLSE/RLSE, and starts the timer Tsr-ias.
  • the IAS-Session Release message is used to indicate that the SRNC has released the current UMB session, so the eBS1/FLSE/RLSE must release the resources allocated to the AT and clear the UMB session of the AT in the eBS1/FLSE/RLSE. S314. After receiving the IAS-session release message, the eBS1/FLSE/RLSE sends an IAS-session release response message to the SRNC. The SRNC stops the timer Tsr-ias. As can be seen from the above description, there is no relevant charging information to the AGW in the above process. In addition, there are also multiple mobile IP tunnels in the active access terminal. How to solve the charging process when multiple mobile IP tunnels are released is not included in the current technology.
  • the present invention provides a charging method for an ultra mobile broadband access network.
  • a charging method for an ultra mobile broadband access network in the case where a preferred proxy mobile IP tunnel exists, when the service evolved base station serving the access terminal sends a session release message to decide to release the ultra mobile broadband
  • the method includes the following steps: S402: The monthly evolved base station releases the resource allocated for the access terminal, and connects to the access terminal.
  • the ingress gateway sends a charging request (stop) message about the radio resource occupied by the access terminal; and S404, after receiving the charging request message, the access gateway sends an accounting response message to the serving evolved base station to confirm that the charging is received.
  • Request message The service evolved base station starts a timer of a specific duration while transmitting the charging request message to the access gateway, so as to re-access the network if the charging response message of the access gateway is not received within a specific duration.
  • the gateway sends a charging request message.
  • the session reference network controller sends a session release message to the serving evolved base station to initiate an ultra mobile broadband session release, and then initiates the charging process, when receiving the packet data session release message from the data attachment point.
  • the charging request message carries a charging stop word, an air interface record, and a connection close indication.
  • the release is decided.
  • the method includes the following steps: S702: The service evolved base station releases the resources allocated for the access terminal, and serves the access terminal The access gateway sends a charging request (stop) message about the radio resource occupied by the access terminal; S704, after receiving the charging request message sent by the serving evolved base station, the access gateway sends an accounting response message to the serving evolved base station to It is confirmed that it has received the charging request message sent by the service evolved base station.
  • the non-serving evolved base station also sends the relevant information to the access gateway.
  • the access gateway After receiving the charging request message sent by the non-serving evolved base station, the access gateway sends an accounting response message to the non-serving evolved base station to confirm that it receives the non-serving evolved base station.
  • the billing request message sent.
  • the service evolved base station and the non-serving evolved base station start a timer of a specific duration while transmitting the charging request message to the access gateway, so that the charging response message is not received within a certain period of time.
  • the gateway sends a charging request message.
  • the session reference network controller sends a session release message to the serving evolved base station to initiate the release of the ultra mobile broadband session, and then initiates the charging process, when receiving the packet data release message from the data attachment point.
  • the charging request message sent by the non-serving evolved base station carries a stop typeface, an air interface record, and a connection close indication.
  • 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 schematic diagram of a UMB access network in the prior art for activating an access terminal UMB.
  • FIG. 3 is a flow chart of a prior art UMB access network for activating an access terminal packet data session release;
  • FIG. 4 is a diagram for super-preferred proxy mobile IP tunnel presence in accordance with an embodiment of the present invention.
  • Brief flow chart of the charging method of the mobile broadband access network FIG. 5 is a detailed flowchart of the UMB access network including the process shown in FIG. 4 for releasing the UMB session of the active access terminal;
  • FIG. 6 includes the FIG. A detailed flow chart of the UMB access network of the process for activating the access terminal packet data session release;
  • FIG. 7 is a super mobile broadband connection for the presence of more than 40 pairs of multiple mobile IP tunnels in the embodiment of the present invention.
  • a brief flow chart of the charging method of the network access and
  • FIG. 8 is a detailed flowchart of the UMB session release of the UMB access network including the process shown in FIG.
  • FIG. 4 a charging method for an ultra mobile broadband access network for the case where a preferred proxy mobile IP tunnel exists is illustrated in accordance with an embodiment of the present invention.
  • the serving evolved base station serving the access terminal sends a session release message to decide to release the ultra mobile broadband session, or receives a session release message from the session reference network controller to release the ultra mobile broadband session, the charging is performed.
  • the method includes the following steps: S402: A service evolved base station releases a resource allocated for an access terminal, and sends a charging request (stop) message about a radio resource occupied by the access terminal to an access gateway serving the access terminal; and S404 After receiving the charging request message, the access gateway sends an accounting response message to the serving evolved base station to confirm that it has received the charging request message.
  • the service evolved base station starts a timer of a specific duration while transmitting the charging stop information to the access gateway, so as to re-access the network if the charging response message of the access gateway is not received within a specific duration.
  • the gateway sends a charging request message.
  • the session reference network controller receives the packet data session from the data attachment point
  • the session release message is sent to the service evolved base station, and the ultra mobile broadband session is initiated, and the charging process is started.
  • the charging request message carries a charging stop word, an air interface, and a connection close indication.
  • FIG. 5 a detailed process of a UMB access network including the process shown in FIG. 4 for activating an access terminal UMB session release is illustrated. Among them, there is a preferred proxy mobile IP tunnel between DAP and AGW.
  • a new eBS1 sends an "Accounting Request" message to the AGW. After receiving the AGW, the AGW returns the "Accounting Response" message and defines the timer Tacu.
  • the process specifically includes the following steps:
  • the SRI of the S502, AT or AT initiates a UMB session release.
  • ⁇ ⁇ set the ANRI to SRNC.
  • the SRNC releases the UMB session, it sends an IAS-session release message to all ANRIs and DAPs in the route set.
  • Steps S504 - S506 and S508 - S510 can be performed simultaneously.
  • the SRNC sends an IAS-session release message to the eBS1/FLSE/RLSE, and starts the timer Tsr-ias.
  • the IAS-Session Release message is used to indicate that the SRNC has released the current UMB session, so the eBS1/FLSE/RLSE must release the resources allocated to the AT and clear the UMB session of the AT in the eBS1/FLSE/RLSE.
  • the eBS 1/FLSE/RLSE After receiving the IAS-session release message, the eBS 1/FLSE/RLSE sends an IAS-Session Release Response message to the SRNC. SRNC stops the timer Tsr-ias.
  • the eBS1 sends a charging request (stop) message to the AGW, where the air interface record 1 and the connection close indication are included, and the eBS1 starts the timer Tacu. This step can be performed at any time after step S504.
  • the AGW sends an accounting response message to the eBS1.
  • eBSl stops the timer Tacu after receiving the message.
  • the SRNC sends an IAS- ⁇ tongue release message to the DAP, and starts the timer Tsr-ias.
  • the IAS-Session Release message is used to indicate that the SRNC has released the current UMB session, so the DAP must release the resources allocated to the AT, clear the UMB session of the AT in the DAP, and release the PMIP tunnel between the AGW and the DAP.
  • the DAP After receiving the IAS-session release message, the DAP sends an IAS-session release response message to the SRNC.
  • SRNC stops the timer Tsr-ias.
  • the DAP After receiving the IAS-session release message sent by the SRNC, the DAP sends the Lifetime. A PMIP-Registration Request message with a field value of 0 is sent to the AGW to release the PMIP tunnel of the AT between the AGW and the DAP. The DAP starts the timer Trrq-pmip.
  • FIG. 6 a detailed process of a UMB access network including the process shown in FIG. 4 for activating an access terminal packet data session release to cause a UMB session release is illustrated, and an accounting process is included. Among them, there is a preferred proxy mobile IP tunnel between the DAP and the AGW.
  • a new eBS1 sends a "Accounting Request (Stop)" message to the AGW.
  • the AGW After receiving the AGW, the AGW returns the "Account Response" message and defines a timer for the two messages.
  • the process specifically includes the following steps:
  • the AGW sends a PMIP-registration 4 credit message to the DAP and starts the timer Trrv.
  • the DAP after receiving the PMIP-registration: pin message, the DAP sends a PMIP-t pin response message to the AGW.
  • AGW stops the timer Trrv.
  • the DAP sends an IPT-Notification message to the SRNC to indicate that the packet data session has been released and starts the timer Tnot-ipt.
  • the SRNC After receiving the IPT-notification message, the SRNC sends an IPT-notification confirmation message to the DAP. DAP stops the timer Tnot-ipt.
  • the SRNC After receiving the IPT-notification message, the SRNC initiates release of the UMB session. After the SRNC releases the AT's UMB session, it sends an IAS-session release message to all ANRLs in the route set.
  • the SRNC sends an IAS-session release message to the eBS1/FLSE/RLSE, and starts the timer Tsr-ias.
  • the IAS-Session Release message is used to indicate that the SRNC has released the current UMB session, so the eBS1/FLSE/RLSE must release the resources allocated to the AT and clear the UMB session of the AT in the eBS1/FLSE/RLSE.
  • S614. After receiving the IAS-session release message, the eBS1/FLSE/RLSE sends an IAS- ⁇ tongue release response message to the SRNC. SRNC stops the timer Tsr-ias.
  • eBS1 sends a charging request (stop) message to the AGW, and eBS1 starts the timer Tacu. This step can be performed at any time after step S604. S618.
  • the AGW sends an accounting response message to the eBS1.
  • the eBS1 stops the timer TacUo upon receipt of the message.
  • FIG. 7 a charging method for an ultra mobile broadband access network for the presence of a multi-proxy mobile IP tunnel is illustrated in accordance with an embodiment of the present invention. As shown in FIG. 7, when the serving evolved base station of the access terminal sends a session release message, it decides to release the ultra mobile broadband session, send a session release message to the access terminal's routing set member and data binding point, or receive the session reference network.
  • the charging method includes the following steps: S702: The service evolved base station releases the resource allocated for the access terminal, and sends the related access to the access gateway serving the access terminal.
  • S704 after receiving the charging request message sent by the serving evolved base station, the access gateway sends an accounting response message to the serving evolved base station to confirm that it has received the service evolved base station a charging request message;
  • S706 if an air link record is created for the access terminal before the non-serving evolved base station having the reverse proxy mobile IP tunnel with the access gateway, the non-serving evolved base station also sends the relevant connection to the access gateway a charging request message for the radio resource occupied by the terminal;
  • S708 receiving the non-serving evolved base station
  • the charging request message the access gateway sends a charging response message to the non-serving evolved base station to confirm receipt of the non-serving evolved base station sends the accounting request message.
  • steps S702 to S704 can be simultaneously with steps S706 to S708.
  • the service evolved base station and the non-serving evolved base station start a timer of a specific duration while transmitting the charging request message to the access gateway, so that the charging response message is not received within a certain period of time.
  • the gateway sends a charging request message.
  • the session reference network controller sends a session release message to the serving evolved base station to initiate the release of the ultra mobile broadband session, and then initiates the charging process, when receiving the packet data release message from the data attachment point. Referring to FIG. 8, a session release process in the case where there are multiple PMIP tunnels including the process shown in FIG. 7 is illustrated.
  • the session release process includes the following steps:
  • S804, eBS2 and AGW have a reverse PMIP tunnel for reverse data transmission.
  • S806, the air interface session is released between the AT and the SRNC. (The following steps S808 - S810, S812 - S814, S816 - S818 can occur simultaneously)
  • the SRNC sends an IAS-session release message to the eBS1, and sets a timer Tsr-ias to wait for the response message of the eBS1.
  • eBS1 returns the IAS-session release confirmation message to the SRNC, and the SRNC resets the timer Tsr-ias after receiving the confirmation message.
  • the SRNC sends an IAS-session release message to the DAP, and sets a timer Tsr-ias to wait for a response message from the DAP.
  • the DAP returns an IAS-session release confirmation message to the SRNC, and the SRNC resets the timer Tsr-ias after receiving the confirmation message.
  • the SRNC sends an IAS-session release message to the eBS2, and sets a timer Tsr-ias to wait for the response message of the eBS2.
  • eBS2 returns the IAS-session release confirmation message to the SRNC, and the SRNC resets the timer Tsr-ias after receiving the confirmation message.
  • the DAP after receiving the IAS-session release message, the DAP sends a proxy mobile IP registration request message to the AGW, with a lifetime of 0, indicating that the PMIP tunnel needs to be released, and setting a timer Trrq-pmip to wait for the AGW reply message.
  • the AGW finds that the lifetime is 0, deletes the proxy mobile IP tunnel, and returns a proxy mobile IP registration response message to the DAP, and the DAP resets the timer Trrq-pmip after receiving the response message. .
  • the eBS2 after receiving the IAS-session release message, sends a proxy mobile IP registration request message to the AGW, with a lifetime of 0, indicating that the PMIP tunnel needs to be released, and setting a timer Trrq-pmip to wait for the AGW reply message. This step can occur immediately after step S816.
  • the AGW finds that the lifetime is 0, deletes the proxy mobile IP tunnel, and returns a proxy mobile IP registration response message to the eBS2, and the eBS2 resets the timer Trrq-pmip after receiving the response message. .
  • eBS1/FLSE/RLSE sends a charging request (stop) message to the AGW, and starts the timer Tact. This step can occur any time after step S808.
  • the AGW sends a charging response message to the eBS 1/FLSE/RLSE. After receiving the message, the eBS1/FLSE/RLSE stops the timer Tact.
  • the eBS2 sends a charging request (stop) message to the AGW, and starts a timer Tact. This step may occur any time after step S816.
  • the AGW sends an accounting response message to the eBS2, and after receiving the message, the eBS2 stops the timer Tact;
  • the prior art does not include the timer Tacu (the timer name can be other).
  • the eBS should start the timer Tacu after sending the charging request message, and the length of the timer 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 the flow involved in the present invention, or in any other process involving two billing information.
  • the present invention is directed to the current situation of UMB-related processes in the current UMB access network technology lacking the charging process or information, and proposes to increase the information related to charging in the process of releasing UMB session and releasing the packet data session. Interaction process. It not only completes the above technical process, but also improves the UMB access network to implement billing functions, which has important network realities.
  • the above is only the 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. All modifications, equivalents, improvements, etc., made within the spirit and scope of the invention are intended to be included within the scope of the appended claims.

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Description

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激活 接入终端会话释放的计费方法。 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^出。 为了支持 UMB空中接口技术， 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, 简称 AGW )为接入终端（ Access Terminal, 简称 AT )提供了接入数据分组网络所需的 "IP依附点 "。 因此对 AT而言， AGW实际上就是第一兆路由器。 演进型基站 （Evolved Base Station, 简称 eBS ) 是可以在无线栽波上与
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：前向链路服务基站（ Forward Link Serving eBS,筒称 FLSE )、反向链路服务基站（ 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， 当承担 DAP角色的 eBS不再是激活集成员的时候。 会话参考网络控制器 （ Session Reference Network Controller , 简称 SRNC ) 负责维护与 AT之间的会话参考。 SR C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。 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 ANRIo 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的基本功能要求。 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/DAP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 生用户计费记录。 当前的接入网技术在一些方面已经包含有计费的功能， 如在一个 UMB 会话建立过程中、在一个 eBS从某个 AT的路由集合中去除的时候， eBS/DAP 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所示的现有的由 AT或 SRNC发起的 UMB会话释放过程中就 缺少计费功能。 如图 2所示， 现有的由 AT或 SRNC发起的 UMB会话释放 过程包括以下步骤：
S202, AT或 AT的 ANRI发起 UMB会话释放。 这里個 _设该 ANRI为 SRNC。 SRNC 释放 UMB 会话后， 发送路由实例间信令 （ Inter-ANSI Signaling, 简称 IAS ) -会话释放消息给路由集中的所有 ANRI以及 DAP。 下面的步骤 S204 - S206和 S208 - S210可以同步进行。
S204, SRNC发送 IAS -会话释放消息给 eBSl/FLSE/RLSE, 同时启动 定时器 Tsr-ias。 IAS -会话释放消息用以表明 SRNC已经释放了当前的 UMB 会话， 因此 eBSl/FLSE/RLSE 必须释放给 AT 分配的资源并清除 eBSl/FLSE/RLSE中的该 AT的 UMB会话。 S206 , 收到 IAS - ^舌释放消息后， eBS 1/FLSE/RLSE发送 IAS - 舌 释放应答消息给 SRNC。 SRNC停止定时器 Tsr-ias。
S208, SRNC发送 IAS -会话释放消息给 DAP,同时启动定时器 Tsr-ias。 IAS -会话释放消息用以表明 SRNC已经释放了当前的 UMB会话，因此 DAP 必须释放给 AT分配的资源、清除 DAP中的该 AT的 UMB会话并释放 AGW 和 DAP之间 ό々代理移动 IP ( Proxy Mobile IP, 简称 PMIP ) 隧道。
S210, 收到 IAS -会话释放消息后， DAP发送 IAS -会话释放应答消息 给 SRNC。 SRNC停止定时器 Tsr-ias。
S212, 收到 SRNC发来的 IAS -会话释放消息后， DAP发送 Lifetime 字段值为 0的 PMIP -注册请求消息给 AGW, 用于释放 AGW和 DAP间该 AT的 PMIP隧道。 DAP启动定时器 Trrq-pmip。
S214, 收到 DAP发来的 PMIP -注册请求消息后， AGW释放隧道并发 送 PMIP -注册请求回应消息给 DAP。 DAP停止定时器 Trrq-pmip。 在如图 3 所示的现有的由 AGW发起的 UMB分组数据会话释放导致 UMB会话释放的过程中也缺少计费功能。如图 3所示， 现有的由 AGW发起 的 UMB分组数据会话释放过程导致的 UMB会话释放过程包括以下步骤：
S302, AGW发送 PMIP -注册撤销消息给 DAP并启动定时器 Trrv。
S304 , 收到 PMIP -注册撤销消息后， DAP发送 PMIP -拍销应答消息 给 AGW。 AGW停止定时器 Trrv。 S306, 这里假设 DAP不在 AT的路由集中。 DAP发送 IAS -分组数据 会话释放消息给 SRNC并启动定时器 Tpdsr-ias。 IAS -分组数据释放消息用 以表明分组数据会话已经被释放。
S308, 收到 IAS -分组数据会话释放消息后， SRNC发送 IAS -分组数 据释放应答消息给 DAP。 DAP停止定时器 Tpdsr-ias。 S310， 收到 IAS -分组数据会话释放消息后， SRNC发起 UMB会话的 释放。 在 SRNC释放了 AT的 UMB会话后， SRNC必须发送 IAS -会话释放 消息给路由集中的所有 ANRL S312, SRNC发送 IAS - 舌释放消息给 eBSl/FLSE/RLSE, 同时启动 定时器 Tsr-ias。 IAS -会话释放消息用以表明 SRNC已经释放了当前的 UMB 会话， 因此 eBSl/FLSE/RLSE 必须释放给 AT 分配的资源并清除 eBSl/FLSE/RLSE中的该 AT的 UMB会话。 S314, 收到 IAS -会话释放消息后 , eBSl/FLSE/RLSE发送 IAS -会话 释放应答消息给 SRNC。 SRNC停止定时器 Tsr-ias。 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。 另外， 激活接入终端也存在多移动 IP隧道的情形， 如何解决多移动 IP隧道 释放时的计费流程， 当前技术也没有包括。 这些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一种用于超移动宽带接入网的计费方法，针对首选 代理移动 IP隧道存在的情形，当服务于接入终端的服务演进基站发送会话释 放消息决定释放超移动宽带会话， 或收到来自会话参考网络控制器的会话释 放消息释放超移动宽带会话时， 包括以下步骤： S402, 月 务演进基站释放为 接入终端分配的资源， 并向服务于接入终端的接入网关发送有关接入终端占 用的无线资源的计费请求（停止）消息； 以及 S404, 接入网关收到计费请求 消息后，向服务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， 服务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接入网关的计费响应消息的情 况下， 重新向接入网关发送计费请求消息。 其中，会话参考网络控制器在接收到来自数据依附点的分组数据会话释 放消息的情况下， 向服务演进基站发送会话释放消息， 发起超移动宽带会话 释放， 进而启动计费流程。 其中， 计费请求消息中携带有计费停止字样、 空口记录、 和连接关闭指 示。 才艮据本发明实施例的另一种用于超移动宽带接入网的计费方法，针对多 代理移动 IP隧道存在的情形，当服务于接入终端的服务演进基站发送会话释 放消息决定释放超移动宽带会话、 或收到来自会话参考网络控制器的会话释 放消息释放超移动宽带会话时， 包括以下步骤： S702, 服务演进基站释放为 接入终端分配的资源， 并向服务于接入终端的接入网关发送有关接入终端占 用的无线资源的计费请求 （停止） 消息； S704, 接入网关收到服务演进基站 发送的计费请求消息后， 向服务演进基站发送计费响应消息以确认其接收到 了服务演进基站发送的计费请求消息。 其中， 如果与接入网关有反向代理移 动 IP 隧道的非服务于接入终端的非服务演进基站之前为接入终端创建了空 中链路记录， 则非服务演进基站也向接入网关发送有关接入终端占用的无线 资源的计费请求消息； 以及接入网关收到非服务演进基站发送的计费请求消 息后， 向非服务演进基站发送计费响应消息以确认其收到非服务演进基站发 送的计费请求消息。 其中，服务演进基站和非服务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，会话参考网络控制器在接收到来自数据依附点的分组数据^舌释 放消息的情况下， 向服务演进基站发送会话释放消息， 发起超移动宽带会话 释放， 进而启动计费流程。 其中， 非服务演进基站发送的计费请求消息中携带有停止字样、 空口记 录、 和连接关闭指示。 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接入网的网络结构示意图； 图 2是现有技术中的 UMB接入网对于激活接入终端 UMB ^舌释放的 流程图； 图 3是现有技术中的 UMB接入网对于激活接入终端分组数据会话释放 的流程图； 图 4是根据本发明实施例的针对首选代理移动 IP隧道存在的情况的用 于超移动宽带接入网的计费方法的简要流程图； 图 5是包含了图 4所示过程的 UMB接入网对于激活接入终端 UMB会 话释放的详细流程图； 图 6是包含了图 4所示过程的 UMB接入网对于激活接入终端分组数据 会话释放的详细流程图； 图 7是 居本发明实施例的 4十对多个«理移动 IP隧道存在的情况的用 于超移动宽带接入网的计费方法的简要流程图； 以及 图 8是包含了图 7所示过程的 UMB接入网对于激活接入终端多 PMIP 隧道的 UMB会话释放的详细流程图。 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针对首选代理移动 IP 隧道存在的 情况的用于超移动宽带接入网的计费方法。 如图 4所示， 当服务于接入终端 的服务演进基站发送会话释放消息决定释放超移动宽带会话， 或收到来自会 话参考网络控制器的会话释放消息释放超移动宽带会话时， 该计费方法包括 以下步骤： S402, 服务演进基站释放为接入终端分配的资源， 并向服务于接 入终端的接入网关发送有关接入终端占用的无线资源的计费请求 （停止） 消 息； 以及 S404, 接入网关收到计费请求消息后， 向服务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， 服务演进基站在将计费停止信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接入网关的计费响应消息的情 况下， 重新向接入网关发送计费请求消息。 其中，会话参考网络控制器在接收到来自数据依附点的分组数据会话释 放消息的情况下， 向服务演进基站发送会话释放消息， 发起超移动宽带会话 释放， 进而启动计费流程。 其中， 计费请求消息中携带有计费停止字样、 空 口 i己录、 和连接关闭指示。 参考图 5， 说明包含了图 4所示过程的 UMB接入网对于激活接入终端 UMB会话释放的详细过程。 其中， DAP和 AGW之间存在首选代理移动 IP 隧道。 在该过程中， 新增了 eBSl发送 "计费请求（ Accounting Request )" 消 息给 AGW, AGW收到之后， 返回 "计费响应 ( Accounting Response )" 消 息的步骤， 并定义了定时器 Tacu。 如图 5所示， 该过程具体包括以下步骤：
S502, AT或 AT的 ANRI发起 UMB会话释放。 这里^ ί叚设该 ANRI为 SRNC。 SRNC释放了 UMB会话后， 发送 IAS -会话释放消息给路由集中所 有的 ANRI以及 DAP。 步骤 S504 - S506和 S508 - S510可以同步进行。
S504, SRNC发送 IAS -会话释放消息给 eBSl/FLSE/RLSE, 同时启动 定时器 Tsr-ias。 IAS -会话释放消息用以表明 SRNC已经释放了当前的 UMB 会话， 因此 eBSl/FLSE/RLSE 必须释放给 AT 分配的资源并清除 eBSl/FLSE/RLSE中的该 AT的 UMB会话。
S506, 收到 IAS -会话释放消息后， eBS 1/FLSE/RLSE发送 IAS -会话 释放应答消息给 SRNC。 SRNC停止定时器 Tsr-ias。
S508 , eBSl发送计费请求（停止）消息给 AGW, 其中包含空口记录 1 和连接关闭指示， 同时 eBSl启动定时器 Tacu。 这一步可以在步骤 S504后的 任意时刻进行。
S510, 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。
S512 , SRNC发送 IAS - ^舌释放消息给 DAP，同时启动定时器 Tsr-ias。 IAS -会话释放消息用以表明 SRNC已经释放了当前的 UMB会话，因此 DAP 必须释放给 AT分配的资源、清除 DAP中的该 AT的 UMB会话并释放 AGW 和 DAP之间的 PMIP隧道。
S514, 收到 IAS―会话释放消息后 , DAP发送 IAS -会话释放应答消息 给 SRNC。 SRNC停止定时器 Tsr-ias。
S516, 收到 SRNC发来的 IAS -会话释放消息后， DAP发送 Lifetime 字段值为 0的 PMIP -注册请求消息给 AGW, 用于释放 AGW和 DAP间该 AT的 PMIP隧道。 DAP启动定时器 Trrq-pmip。
S518, 收到 DAP发来的 PMIP -注册请求消息后， AGW释放隧道并发 送 PMIP -注册请求回应消息给 DAP。 DAP停止定时器 Trrq-pmip。 参考图 6, 说明包含了图 4所示过程的 UMB接入网对于激活接入终端 分组数据会话释放导致 UMB会话释放的详细过程， 并包括了计费流程。 其 中， DAP和 AGW之间存在首选代理移动 IP隧道。在该过程中，新增了 eBSl 发送 "计费请求（停止）" 消息给 AGW, AGW收到之后， 返回 "计费响应" 消息的步骤， 并为这两个消息定义了定时器。 如图 6所示， 该过程具体包括 以下步骤：
S602, AGW发送 PMIP -注册 4敉销消息给 DAP并启动定时器 Trrv。
S604 , 收到 PMIP -注册 ：销消息后， DAP发送 PMIP - t销应答消息 给 AGW。 AGW停止定时器 Trrv。
S606, 这里假设 DAP不在 AT的路由集中。 DAP发送 IPT -通知消息 给 SRNC, 以表明分组数据会话已经被释放， 并启动定时器 Tnot-ipt。
S608,收到 IPT―通知消息后， SRNC发送 IPT -通知证实消息给 DAP。 DAP停止定时器 Tnot-ipt。
S610, 收到 IPT -通知消息后， SRNC发起 UMB会话的释放。在 SRNC 释放了 AT 的 UMB 会话后， 发送 IAS -会话释放消息给路由集中的所有 ANRL
S612, SRNC发送 IAS -会话释放消息给 eBSl/FLSE/RLSE, 同时启动 定时器 Tsr-ias。 IAS -会话释放消息用以表明 SRNC已经释放了当前的 UMB 会话， 因此 eBSl/FLSE/RLSE 必须释放给 AT 分配的资源并清除 eBSl/FLSE/RLSE中的该 AT的 UMB会话。 S614, 收到 IAS -会话释放消息后， eBSl/FLSE/RLSE发送 IAS - ^舌 释放应答消息给 SRNC。 SRNC停止定时器 Tsr-ias。
S616, eBSl发送计费请求（停止） 消息给 AGW, 同时 eBSl启动定时 器 Tacu。 这一步可以在步骤 S604后的任意时刻进行。 S618, AGW发送计费响应消息给 eBSl。 eBSl在收到该消息后停止定 时器 TacUo 参考图 7, 说明根据本发明实施例的针对多代理移动 IP隧道存在的情 况的用于超移动宽带接入网的计费方法。 如图 7所示， 当接入终端的服务演 进基站发送会话释放消息决定释放超移动宽带会话、 发送会话释放消息给接 入终端的路由集成员和数据绑定点、 或收到来自会话参考网络控制器的会话 释放消息释放超移动宽带会话时， 该计费方法包括以下步骤： S702, 服务演 进基站释放为接入终端分配的资源， 并向服务于接入终端的接入网关发送有 关接入终端占用的无线资源的计费请求 （停止） 消息； S704 , 接入网关收到 服务演进基站发送的计费请求消息后， 向服务演进基站发送计费响应消息以 确认其接收到了服务演进基站发送的计费请求消息； S706, 如果与接入网关 有反向代理移动 IP 隧道的非服务演进基站之前为接入终端创建了空中链路 记录， 则非服务演进基站也向接入网关发送有关接入终端占用的无线资源的 计费请求消息； 以及 S708, 收到非服务演进基站发送的计费请求消息后， 接 入网关发送计费响应消息给非服务演进基站以确认收到了非服务演进基站发 送的计费请求消息。其中，步骤 S702至 S704可以和步骤 S706至 S708同时。 其中，服务演进基站和非服务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，会话参考网络控制器在接收到来自数据依附点的分组数据^舌释 放消息的情况下， 向服务演进基站发送会话释放消息， 发起超移动宽带会话 释放， 进而启动计费流程。 参考图 8, 说明包含了图 7所示过程的存在多个 PMIP隧道时的会话释 放过程。其中，除了 DAP与 AGW之间存在首选 PMIP P遂道外，另外一个 eBS2 与 AGW之间存在反向 PMIP隧道， 此处假设 eBSl为前反向服务演进基站。 如图 8所示， 该会话释放过程包括以下步骤：
S802, DAP与 AGW之间存在首选 PMIP隧道， AT与 AGW正在进行 数据传输。
S804, eBS2与 AGW存在反向 PMIP隧道， 用于进行反向数据传输。 S806 , AT与 SRNC之间进行空中接口会话释放。 (以下步骤 S808 - S810、 S812 - S814, S816 - S818可以同时发生）
S808, SRNC给 eBSl发送 IAS -会话释放消息， 并设置定时器 Tsr-ias 等待 eBSl的应答消息。
S810, eBSl给 SRNC回 IAS -会话释放证实消息， SRNC收到证实消 息后复位定时器 Tsr-ias。
S812, SRNC给 DAP发送 IAS -会话释放消息， 并设置定时器 Tsr-ias 等待 DAP的应答消息。
S814, DAP给 SRNC回 IAS -会话释放证实消息， SRNC收到证实消 息后复位定时器 Tsr-ias。 S816, SRNC给 eBS2发送 IAS -会话释放消息， 并设置定时器 Tsr-ias 等待 eBS2的应答消息。
S818, eBS2给 SRNC回 IAS -会话释放证实消息， SRNC收到证实消 息后复位定时器 Tsr-ias。
S820, DAP收到 IAS -会话释放消息后， 给 AGW发送代理移动 IP登 记请求消息， 携带生命期为 0, 表示需要释放该 PMIP隧道， 并设置定时器 Trrq-pmip等待 AGW的应答消息。
S822, AGW收到代理移动 IP登记请求消息后， 发现生命期为 0, 删除 该代理移动 IP隧道， 并返回代理移动 IP登记响应消息给 DAP, DAP在收到 响应消息后复位定时器 Trrq-pmip。 S824, eBS2收到 IAS -会话释放消息后， 给 AGW发送代理移动 IP登 记请求消息， 携带生命期为 0， 表示需要释放该 PMIP隧道， 并设置定时器 Trrq-pmip等待 AGW的应答消息。 该步可以在步骤 S816之后立刻发生。
S826, AGW收到代理移动 IP登记请求消息后， 发现生命期为 0, 删除 该代理移动 IP隧道， 并返回代理移动 IP登记响应消息给 eBS2 , eBS2在收 到响应消息后复位定时器 Trrq-pmip。
S828 , eBSl/FLSE/RLSE向 AGW发送计费请求 （停止） 消息， 并启动 定时器 Tact.该步骤可以发生在步骤 S808之后任何时候。 S830, AGW向 eBS 1/FLSE/RLSE发送计费响应消息， 收到该消息后， eBSl/FLSE/RLSE停止定时器 Tact。
S832, 如果之前为接入终端创建了空中链路记录， eBS2向 AGW发送 计费请求 （停止） 消息， 并启动定时器 Tact.该步骤可以发生在步骤 S816之 后任何时候。
S834， AGW向 eBS2发送计费响应消息， 收到该消息后， eBS2停止定 时器 Tact；。 现有技术中没有包括定时器 Tacu (定时器名称可以是其他）， 我们认为 计费信息非常重要，应该保证 AGW能准确收到来自 eBS的计费信息。 因此， eBS在发送计费请求消息之后， 应该启动该定时器 Tacu, 定时器的长度可灵 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， 提出了针对 UMB会话释放、 以及分组数据会话 释放等流程中增加涉及到计费的信息交互过程。 它不仅仅完善了以上技术流 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 一种用于超移动宽带接入网的计费方法， 其特征在于， 在首选代理移动
IP隧道存在的情况下， 当服务于接入终端的服务演进基站发送会话释放 消息决定释放超移动宽带会话， 或收到来自会话参考网络控制器的会话 释放消息释放超移动宽带会话时， 包括以下步骤：
S402 , 所述服务演进基站释放为所述接入终端分配的资源， 并向服 计费请求消息； 以及
S404 , 所述接入网关收到所述计费请求消息后， 向所述服务演进基 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， 所述服务演进基站在将 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。 根据权利要求 1或 2所述的计费方法， 其特征在于， 所述会话参考网络 控制器在接收到来自数据依附点的分组数据会话释放消息的情况下， 向 所述服务演进基站发送所述会话释放消息， 发起超移动宽带会话释放， 进而启动计费流程。
4. 根据权利要求 3所述的计费方法， 其特征在于， 所述计费请求消息中携 带有计费停止字样、 空口记录、 和连接关闭指示。 一种用于超移动宽带接入网的计费方法， 其特征在于， 在多代理移动 IP 隧道存在的情况下， 当服务于接入终端的服务演进基站发送会话释放消 息决定释放超移动宽带会话， 或收到来自会话参考网络控制器的会话释 放消息释放超移动宽带会话时， 包括以下步骤：
S702 , 所述服务演进基站释放为所述接入终端分配的资源， 并向服 计费请求消息; S704 , 所述接入网关收到所述服务演进基站发送的计费请求消息 后， 向所述服务演进基站发送计费响应消息以确认其接收到了所述服务 演进基站发送的计费请求消息； 其中
如果与所述接入网关有反向代理移动 IP 隧道的非服务于所述接入 终端的非服务演进基站之前为所述接入终端创建了空中链路记录， 则所 述非服务演进基站也向所述接入网关发送有关所述接入终端占用的无线 资源的计费请求消息； 以及
所述接入网关收到所述非服务演进基站发送的计费请求消息后， 向 所述非 良务演进基站发送所述计费响应消息以其确认收到所述非^ ^务演 进基站发送的计费请求消息。
6. 根据权利要求 5所述的计费方法， 其特征在于， 所述服务演进基站和所 述非服务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。
7. 根据权利要求 5或 6所述的计费方法， 其特征在于， 所述会话参考网络 控制器在接收到来自数据依附点的分组数据会话释放消息的情况下， 向 所述服务演进基站发送所述会话释放消息， 发起超移动宽带会话释放， 进而启动计费流程。
8. 根据权利要求 7所述的计费方法， 其特征在于， 所述非服务演进基站发 送的计费请求消息中携带有停止字样、 空口记录、 和连接关闭指示。
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