WO2005041477A1 - Systeme et procede de facturation avec prepaiement dans un reseau local sans fil - Google Patents

Systeme et procede de facturation avec prepaiement dans un reseau local sans fil Download PDF

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Publication number
WO2005041477A1
WO2005041477A1 PCT/CN2004/001189 CN2004001189W WO2005041477A1 WO 2005041477 A1 WO2005041477 A1 WO 2005041477A1 CN 2004001189 W CN2004001189 W CN 2004001189W WO 2005041477 A1 WO2005041477 A1 WO 2005041477A1
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WO
WIPO (PCT)
Prior art keywords
control point
authentication
authentication server
user
service control
Prior art date
Application number
PCT/CN2004/001189
Other languages
English (en)
French (fr)
Inventor
Jianghai Gao
Xiaoyan Li
Yi Zhao
Dianfu Chen
Ming Lin
Jing Wnag
Weimin Chen
Xiaochun Zheng
Wenqin Peng
Qiang Pan
Ling Xie
Nan Xie
Guangliang Jin
Rongbing Ouyang
Original Assignee
Huawei Technologies Co., Ltd.
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.)
Filing date
Publication date
Application filed by Huawei Technologies Co., Ltd. filed Critical Huawei Technologies Co., Ltd.
Priority to DE602004015320T priority Critical patent/DE602004015320D1/de
Priority to EP04789848A priority patent/EP1681796B1/en
Priority to US10/576,782 priority patent/US20070043676A1/en
Publication of WO2005041477A1 publication Critical patent/WO2005041477A1/zh

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Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04M—TELEPHONIC COMMUNICATION
    • H04M17/00—Prepayment of wireline communication systems, wireless communication systems or telephone systems
    • 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 for data wireline or wireless communications
    • 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 for data wireline or wireless communications
    • H04L12/1453—Methods or systems for payment or settlement of the charges for data transmission involving significant interaction with the data transmission network
    • H04L12/1457—Methods or systems for payment or settlement of the charges for data transmission involving significant interaction with the data transmission network using an account
    • 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 for data wireline or wireless communications
    • H04L12/1453—Methods or systems for payment or settlement of the charges for data transmission involving significant interaction with the data transmission network
    • H04L12/1467—Methods or systems for payment or settlement of the charges for data transmission involving significant interaction with the data transmission network involving prepayment
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L63/00—Network architectures or network communication protocols for network security
    • H04L63/08—Network architectures or network communication protocols for network security for authentication of entities
    • H04L63/083—Network architectures or network communication protocols for network security for authentication of entities using passwords
    • H04L63/0838—Network architectures or network communication protocols for network security for authentication of entities using passwords using one-time-passwords
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04M—TELEPHONIC COMMUNICATION
    • H04M15/00—Arrangements for metering, time-control or time indication ; Metering, charging or billing arrangements for voice wireline or wireless communications, e.g. VoIP
    • H04M15/56—Arrangements for metering, time-control or time indication ; Metering, charging or billing arrangements for voice wireline or wireless communications, e.g. VoIP for VoIP communications
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W12/00—Security arrangements; Authentication; Protecting privacy or anonymity
    • H04W12/06—Authentication
    • 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
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L63/00—Network architectures or network communication protocols for network security
    • H04L63/08—Network architectures or network communication protocols for network security for authentication of entities
    • H04L63/0853—Network architectures or network communication protocols for network security for authentication of entities using an additional device, e.g. smartcard, SIM or a different communication terminal
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04M—TELEPHONIC COMMUNICATION
    • H04M2215/00—Metering arrangements; Time controlling arrangements; Time indicating arrangements
    • H04M2215/20—Technology dependant metering
    • H04M2215/202—VoIP; Packet switched telephony
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04M—TELEPHONIC COMMUNICATION
    • H04M2215/00—Metering arrangements; Time controlling arrangements; Time indicating arrangements
    • H04M2215/20—Technology dependant metering
    • H04M2215/2026—Wireless network, e.g. GSM, PCS, TACS
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04M—TELEPHONIC COMMUNICATION
    • H04M2215/00—Metering arrangements; Time controlling arrangements; Time indicating arrangements
    • H04M2215/20—Technology dependant metering
    • H04M2215/2033—WLAN
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04M—TELEPHONIC COMMUNICATION
    • H04M2215/00—Metering arrangements; Time controlling arrangements; Time indicating arrangements
    • H04M2215/22—Bandwidth or usage-sensitve billing
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04M—TELEPHONIC COMMUNICATION
    • H04M2215/00—Metering arrangements; Time controlling arrangements; Time indicating arrangements
    • H04M2215/32—Involving wireless systems
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W4/00—Services specially adapted for wireless communication networks; Facilities therefor
    • H04W4/12—Messaging; Mailboxes; Announcements
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W84/00—Network topologies
    • H04W84/02—Hierarchically pre-organised networks, e.g. paging networks, cellular networks, WLAN [Wireless Local Area Network] or WLL [Wireless Local Loop]
    • H04W84/10—Small scale networks; Flat hierarchical networks
    • H04W84/12—WLAN [Wireless Local Area Networks]

Definitions

  • the present invention relates to wireless local area network charging, and more particularly, to a wireless local area network pre-paid user charging system and charging method.
  • WLAN Wireless Local Area Network
  • IEEE802.il wireless network standard wireless network technology is becoming more mature and complete. It can provide users with more secure, reliable, mobile, efficient, long-distance network interconnection solutions, and has been widely used in enterprises and public hotspots.
  • WLAN products generally include two parts: wireless network card and wireless access point (Access
  • the wireless network card is installed on a laptop, desktop computer, personal digital assistant (Personal Digital Assistant, etc.), and communicates with the AP. Connect wirelessly, and the AP is connected to the wired network in a wired manner to achieve connection with other networks (such as the Internet).
  • WLAN is generally divided into indoor mobile office and outdoor long-distance backbone interconnection, which effectively solves the amount of wired wiring and rerouting projects. Large, the line is easy to damage, the sites in the network cannot be moved, especially the problem of connecting two local area networks separated by tens of kilometers, and it can solve the low transmission rate through the telephone line, high bit error rate, poor line reliability, and high monthly payments.
  • the problem of rent The strong encryption technology of the wireless network and less than one-third of the radiation of the mobile phone, and the freely erected 2. 4G free frequency band can make users in various industries worry-free.
  • WLAN includes a variety of different technologies.
  • One of the more widely used technical standards is the IEEE 802.llb 0 802.lib standard, which operates in the 2.4 GHz frequency band and uses complementary coded key modulation technology. The transmission rate can reach up to llMbi t / s.
  • the 802.lib standard has the advantages of reliable communication, low cost, flexibility, mobility, and high throughput.
  • Traditional operators are also actively building WLAN networks.
  • an important issue facing operators is how to charge WLAN users.
  • Currently, there is a commonly used charging method that is, the unified operation of the WLAN network charging and the traditional mobile network charging through the operator's business operation support system (Business & Operation Support System, "BOSS") system.
  • BOSS Business & Operation Support System
  • the BOSS system is a holistic technology platform that uses a computer network system to implement operator support services. Its functional scope covers billing, settlement, account processing, account management, customer service, and business management. Through this integrated platform, information and resources of all departments and business systems can be integrated, centrally managed, and fully shared, so that these information and resources can be fully utilized.
  • Its billing system includes two processes of billing data collection and pricing. The billing data collection process collects relevant raw basic data and information, and performs corresponding pre-processing such as error checking and format conversion. The generated results record the user's use of the business; the approval process calculates the fees charged to the user.
  • the payment method of WLAN mainly adopts the post-payment method, that is, recording the user's online time or the total amount of data traffic in the server, performing monthly settlement, or using a monthly payment method.
  • the above solution has the following problems: Real-time charging for pre-paid users cannot be achieved.
  • AS Server
  • SCP Service Control Point
  • the technical problem to be solved by the present invention is to provide a wireless local area network prepaid billing system and method, so that prepaid users can also access the wireless local area network and realize real-time billing.
  • the present invention provides a wireless local area network prepaid charging system, which includes an authentication control point, an authentication server, and a service control point.
  • the authentication control point is used to control a user's access to the wireless local area network, send a charging request message with charging information to the authentication server, and then continue or end the user's connection according to the reply from the authentication server.
  • the authentication server is used for the user to perform authentication, authorization, and accounting, and sends an authentication request message to the service control point to update and check the account balance of the user, and according to the service control point's Reply to notify the authentication control point whether the user is allowed to continue access;
  • the service control point is used to store information of the user, update according to the authentication request message, and reply to the authentication server to the user's account Balance.
  • the authentication control point is further configured to send an accounting start request message to the authentication server, which includes the user's accounting information, and send an authentication request message to the service control point, requesting to check the user's account balance And after receiving the response message, reply to the authentication control point to start a charging response message.
  • the service control point is further configured to reply to the authentication server with an authentication request response message with a check result.
  • the authentication control point is further configured to periodically send an intermediate charging request message to the authentication server, including the user's total online time and total traffic information;
  • the authentication server is further configured to send to the service control point Sending an authentication request message, requesting to check the user's account balance, and replying to the authentication control point with an intermediate charging response message;
  • the service control point is also used to update the account balance with a reply to the authentication server with The authentication request response message of the check result.
  • the authentication control point is further configured to send a stop-accounting request message to the authentication server, which includes information about the total length of time and total traffic of the user surfing the Internet; the authentication server is further configured to reply to the authentication control point to stop A charging response message, and sending an authentication request message to the service control point; the service control point is further configured to reply to the authentication server with an authentication request message after updating the account balance.
  • the authentication control point communicates with the authentication server through a remote authorization dial-in user service agreement.
  • the authentication server and the service control point communicate with each other in an extended short message point-to-point protocol.
  • the present invention also provides a wireless LAN prepaid charging method, including the following steps:
  • the authentication server requests the service control point to check the user's account balance according to the charging information from the authentication control point, and the service control point replies the check result to the authentication server;
  • the authentication server periodically requests the service control point to check the user's account balance based on the charging information from the authentication control point, and the service control point responds and updates the account. Replying the check result to the authentication server after the account balance is mentioned;
  • the authentication server notifies the user of the service control point that the charging is ended according to the charging information from the authentication control point, and the service control point updates the account balance.
  • the method includes the following steps: the service control point requests the authentication server to establish a short message point-to-point connection with the authentication server; the authentication server responds and establishes a short message point-to-point connection.
  • the method includes the following steps: the authentication server requests the service control point to disconnect; the service control point responds and replies to the authentication server.
  • the method further includes the following steps: The user accesses the wireless local area network through authentication.
  • the step A further includes the following sub-steps:
  • the authentication control point sends a charging start request message to the authentication server, which includes Charging information of the user;
  • the authentication server sends an authentication request message to the service control point, requesting to check a user's account balance;
  • the service control point returns a response message to the authentication server with a right-of-law request with a check result
  • the authentication server replies to the authentication control point with an accounting start response message.
  • the step B further includes the following sub-steps:
  • B1 the authentication control point periodically sends an intermediate charging request message to the authentication server, which includes the total online time of the user and the total traffic information;
  • B2 the authentication server sends an authentication request message to the service control point, Request to check the user's account balance;
  • the authentication server returns an intermediate charging response message to the authentication control point.
  • the step C further includes the following steps:
  • the authentication control point sends a stop-accounting request message to the authentication server, which includes information about a total duration and total traffic of the user surfing the Internet;
  • the authentication server returns a stop charging response message to the authentication control point
  • the authentication server sends an authentication request message to the service control point;
  • C4 The service control point sends an authentication request response message to the authentication server after updating the account balance. It can be found through comparison that the technical solution of the present invention is different from the prior art in that the authentication information in the accounting message sent by the authentication control point is passed to the service control point by the authentication server, and the service control point is based on the user's account balance And pre-developed strategies for withholding fees or The user refuses to use the WLAN service, and returns the result to the authentication control point through the authentication server.
  • This technical solution difference brings about a more obvious beneficial effect, that is, it facilitates the charging of WLAN pre-paid users, thereby providing a way for WLAN users and operators to go beyond the existing charging methods.
  • the new billing method meets the needs of traditional mobile network users who want to use pre-payment to access WLAN.
  • FIG. 1 is a structural diagram of a WLAN prepaid billing system according to an embodiment of the present invention
  • FIG. 2 is a flowchart of a WLAN prepaid billing method according to an embodiment of the present invention.
  • DETAILED DESCRIPTION To make the objectives, technical solutions, and advantages of the present invention clearer, the present invention will be described in further detail below with reference to the accompanying drawings.
  • the WLAN prepaid charging system is composed of an authentication control point 10, an authentication server 20, and a service control point 30.
  • the authentication server 20 is connected to the authentication control point 10 and the service control point 30 respectively.
  • the interfaces communicate with each other using a standard protocol, and the authentication server 20 is responsible for protocol conversion.
  • the authentication control point 10 is used to control the prepaid user to access the WLAN network, send start and stop billing request messages to the authentication server 20, and receive response messages from the authentication server 20.
  • the witness control point 10 may be an access control point (Access Point, "AP” for short) or an access control device (Access Controller, "AC” for short).
  • AP Access Point
  • AC Access Controller
  • the authentication control point 10 and the authentication server 20 use a Remote Authorized Dial-In User Service (Remote Access Dai-In User Service, referred to as "Radius”) protocol for communication.
  • the authentication server 20 is used to authenticate, authorize, and charge users.
  • SIM authentication means that the user will include the user SIM card for identity information is placed in the SIM card slot of the network card or SIM In the card reader, you do not need to enter the user name and password when logging in, but use the relevant information in the SIM card for authentication, and the cost is included in the SIM card account.
  • OPT authentication adds uncertainty during the login process. Before each login The user obtains a one-time temporary password by some means. After that, the password is only valid during the user's online session, thereby improving the security of the login process.
  • the commonly used billing methods include post-paid and pre-paid methods: After the post-paid method users use the service each time, the system adds a usage record to the database, and then performs settlement after a period of time; the pre-paid method users use each time Before business, the system will first query its permissions and balances, and qualified users will be eligible to continue using the service, and user data and permissions will be updated in real-time as the user uses the business.
  • the main object of the present invention is prepaid users.
  • the service control point 30 is used to store the user's prepaid information for the authentication server 20 to query. In this embodiment, the authentication server 20 and the service control point 30 communicate using the SMPP + protocol.
  • SMPP short message point-to-point protocol
  • SMPP + protocol is an extension of the SMPP protocol and was originally used for short message services.
  • the SMPP + protocol is applied to the real-time charging of WLAN for the first time. Since there is a direct message communication mechanism between the authentication server 20 and the service control point 30, it becomes possible to perform real-time charging for a prepaid user of a traditional mobile network accessing a WLAN. The working process is further described below with reference to the WLAN prepaid charging system shown in FIG.
  • the service control point 30 and the authentication server 20 are bound by a binding message, and then when the prepaid user wants to use the WLAN service,
  • the authentication server 20 converts the received start accounting message sent from the authentication control point 10 into an authentication request message and sends it to the service control point 30.
  • the service control point 30 decides to provide the prepaid user according to the balance of the user account and a predetermined policy Business and start billing or refuse to provide business to it. If the authentication is successful, during the service usage of the prepaid user, the authentication control point 10 will periodically send an intermediate charging request message to the authentication server 20, and the authentication server 20 converts it into an authentication request message and sends it to the service control point 30 to implement Real-time billing.
  • the authentication control point 10 sends an end accounting request message to the authentication server 20, and the authentication server 20 converts it into an authentication request message and sends it to the service control point 30 to stop charging. Finally, as required, the binding relationship between the authentication server 20 and the service control point 30 may be released through a debinding message.
  • the implementation manner of the WLAN prepaid charging system is described above, and the specific process of the WLAN prepaid charging method is described below.
  • the service control point 30 sends a binding reception request message to the authentication server 20, requesting to establish a short message point-to-point (Short Message Peer To Peer, "SMPP") connection with it. Then it proceeds to step 102.
  • SMPP Short Message Peer To Peer
  • the authentication server 20 After receiving the above request message, the authentication server 20 sends a binding reception response message to the service control point 30, which indicates that it has received the request of the service control point 30, and thus the application layer is established between the two.
  • Up SMPP connection In order to ensure the reliable transmission of information, according to the existing network environment, the transmission layer may use a transmission control protocol (Transmission Control Protocol, "TCP" for short) for connection.
  • TCP Transmission Control Protocol
  • steps 101 and 102 are performed only once when the system is initialized, and the charging of each prepaid user should start from step 103. Then, the method proceeds to step 103. After the prepaid user 40 accesses the WLAN network through SIM authentication or OTP authentication, the prepayment user 40 starts to use the WLAN service. Then, the method proceeds to step 104.
  • the authentication control point 10 notifies the authentication server 20 to start accounting by using a start accounting request message, and the message contains related accounting information, such as a user account and time information.
  • step 105 is performed.
  • the authentication server 20 sends an authentication request message to the service control point 30 to check the user's account balance. The purpose of sending this message is to determine whether the prepaid user 40 is entitled to continue to use the WLAN service to prevent its overdraft and cause losses to the operator.
  • step 106 is executed, and the service control point 30 sends an authentication request response message to the authentication server 20. Before sending back the message, the service control point 30 first queries the database for the balance of the prepaid user 40.
  • the withholding fee will be charged according to a pre-configured policy (the specific policy can be configured according to the actual situation, one of which is: every time a certificate is received).
  • the right request message withholds a certain amount of money and indicates that the user is allowed to continue to use the WLAN network for a certain period of time.
  • the SCP receives an authentication request message from the authentication server 20, Deduction of 5 cents from the account of the user 40 indicates that the service control point 30 allows the user to continue using the WLAN network for 5 minutes; of course, the deduction can also be made according to the traffic used by the user), and an authentication request response is sent to the authentication server 20 A message notifying the authentication server 20 that the user can continue to use the WLAN network; if the balance is insufficient, the user is rejected from continuing to use the WLAN network.
  • the process proceeds to step 107.
  • the authentication server 20 sends an accounting start response message to the authentication control point 10, indicating that the accounting has started, and the user can normally use the WLAN service.
  • the method proceeds to step 108.
  • the authentication control point 10 periodically sends an intermediate charging request message to the authentication server 20, where the message includes the current online time of the user and the total traffic information of the user.
  • the purpose of sending this message is to timely transfer the charging information to update the user account balance, so as to manage the rights of the prepaid user 40 in real time.
  • the time interval for sending the message can be configured by the administrator according to different accuracy requirements in advance.
  • the authentication server 20 converts the intermediate charging request message into an authentication request message and sends it to the service control point 30.
  • the conversion strategies involved can be configured according to specific situations.
  • the authentication server 20 After receiving the intermediate charging request message, the authentication server 20 will start the withholding fee process for the next cycle of the user: If the charge is deducted according to time, The period is the interval at which the authentication control point 10 reports the intermediate charging request message. The authentication server 20 divides the interval according to the configured fixed duration, and each fixed duration represents an authentication request message. It can also be divided according to the traffic. After the number of authentication messages, send an authentication request message to the service control point 30 to initiate an authentication process to perform real-time withholding charges; for example, the authentication server 20 receives an intermediate charging request message sent from the authentication control point 10 After the processing is started, the withholding fee flow of the next cycle is started.
  • step 110 is executed.
  • the service control point 30 sends an authentication request response message to the authentication server 20. Its processing strategy is the same as step 106.
  • step 111 the authentication server 20 sends an intermediate charging back to the authentication control point 10
  • the authentication control point 10 is notified of the successful intermediate charging.
  • the process proceeds to step 112, and the authentication control point 10 sends a stop charging request message to the authentication server 20, informing the user that the user has gone offline.
  • the message includes the total time of the user's Internet access and the total traffic information.
  • the authentication server 20 sends a stop-accounting response message to the authentication control point 10.
  • step 114 is performed.
  • the authentication server 20 converts the stop charging request message into an authentication request message and sends it to the service control point 30.
  • the processing flow of the authentication server 20 is the same as step 109.
  • the process proceeds to step 115.
  • the service control point 30 sends an authentication request response message to the authentication server 20.
  • the processing strategy in this process is the same as step 106.
  • step 116 When the connection between the service control point 30 and the authentication server 20 needs to be released, the process proceeds to step 116, and the service control point 30 sends a debinding message to the authentication server 20, requesting to cancel the connection with the authentication server 20. Finally, in step 117, the authentication server 20 sends a binding release response message to the service control point 30, and the connection with the service control point 30 is released. It should be noted that, step 116 and step 117 are usually performed by an administrator when the network is dismantled, and are not performed for a specific user.

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  • Business, Economics & Management (AREA)
  • Accounting & Taxation (AREA)
  • Computer Hardware Design (AREA)
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Description

—卜
无线局域网预付费计费系统及其方法
技术领域
本发明涉及无线局域网的计费， 特别涉及无线局域网预付费用户的计费 系统和计费方法。
背景技术 无线局域网 ( Wireless Local Area Network, 简称 "WLAN" )是指以 无线信道作传输媒介的计算机局域网。 它是在有线网络的基础上发展起来 的， 使网上的计算机具有可移动性， 快速方便解决有线方式难以实现的终 端灵活移动问题， 因而广泛适用于需要可移动数据处理或无法进行物理传 输介质布线的领域。 随着 IEEE802. il无线网络标准的制定与发展， 无线网 络技术趋于成熟与完善。 它能够给用户提供更加安全可靠、 移动、 高效、 远距离的网络互联方案， 并已成功的广泛应用于企业和公众热点场所等领 域。 WLAN 产品一般主要包括两部分： 无线网卡和无线接入点 （Access
Point , 筒称 "AP，，）。 基本工作方式是： 无线网卡安装在笔记本电脑、 台式 电脑、 个人数字助理 ( Personal Dig i tal Ass is tant , 筒称 "PDA" )等终 端上， 与 AP通过无线方式进行连接， AP则以有线方式上连有线网络， 实 现与其他网络（例如因特网） 的连接。 WLAN—般分为室内移动办公和室外远距离主干互联， 有效解决了有线 布线、 改线工程量大， 线路容易损坏， 网中各站点不可移动， 特别是相隔 数十公里的两局域网相连的问题， 更可解决通过电话线传输的速率低， 误 码率高和线路可靠性差以及每月高额的租金问题。 无线网络的强大的加密 技术和低于手机三分之一的辐射以及可以自由架设的 2. 4G 自由频段可使 各种行业的用户无后顾之忧。
WLAN 包括多种不同技术， 目前应用较为广泛的一个技术标准是 IEEE 802. llb0 802. lib标准工作在 2. 4GHz的频带， 采用补码键控调制技术， 传输速率最高可达到 llMbi t/s。 802. lib标准具有可靠的通信、 低成本、 灵活性、 移动性、 高吞吐量等优点。 随着 WLAN的发展， 传统的运营商也在积极建设 WLAN网络。 然而摆在 运营商面前的一个重要问题就是如何对 WLAN用户计费。 目前存在一种常用 的计费方法， 即通过运营商的业务运营支撑系统 （ Bus iness &0peration Support System, 简称 "BOSS" ) 系统， 达到 WLAN网络的计费和传统移动 网络计费的统一。 BOSS系统是利用计算机网络系统实现运营商支撑服务的 整体技术平台， 其功能范围涵盖了计费、 结算、 帐务处理、 帐务管理、 客 户服务、 业务管理等方面。 通过这个一体化平台， 可以实现所有部门和业 务系统的信息和资源整合、 集中管理及充分共享， 从而使这些信息和资源 能够得到充分利用。 其计费系统包括计费数据采集和批价两个过程。 计费 数据采集过程收集有关的原始基础数据和信息， 进行相应的差错检验、 格 式转换等预处理， 生成的结果记录了用户使用业务的情况； 批价过程则计 算向用户收取的费用。 目前 WLAN的付费方式主要是采用后付费的方法， 即在服务器中记录用 户上网的时间或数据流量的总额， 每月进行结算， 或者使用包月的付费方 式。 在实际应用中， 上述方案存在以下问题： 无法实现对预付费用户的实 时计费。
造成这种情况的一个主要原因在于， 认证服务器（Authent if icat ion
Server, 简称 "AS" )和业务控制点（Service Control Point , 简称 "SCP" ) 之间没有直接的消息交互机制。
发明内容 本发明要解决的技术问题是提供一种无线局域网预付费计费系统及 其方法， 使得预付费用户也能够接入无线局域网并实现对其实时计费。 为了解决上述技术问题， 本发明提供了一种无线局域网预付费计费系 统， 包含认证控制点、 认证服务器和业务控制点， 其中， 所述认证控制点用于控制用户接入无线局域网网络， 向所述认证服务 器发送带有计费信息的计费请求消息， 并才艮据所述认证服务器的回复继续 或结束所述用户的接入； 所述认证服务器用于所述用户进行认证、 授权和计费， 向所述业务控 制点发送要求更新并检查所述用户的帐户余额的鉴权请求消息， 并根据所 述业务控制点的回复通知所述认证控制点是否允许所述用户继续接入； 所述业务控制点用于存储所述用户的信息， 根据所述鉴权请求消息更 新并向所述认证服务器回复所述用户的帐户余额。 所述认证控制点还用于向所述认证服务器发送开始计费请求消息， 其 中包含所述用户的计费信息，以及，向所述业务控制点发送鉴权请求消息， 要求检查用户的帐户余额， 并在收到回应消息后向所述认证控制点回复开 始计费回应消息。 所述业务控制点还用于向所述认证服务器回复带有检查结果的鉴权 请求回应消息。 所述认证控制点还用于向所述认证服务器周期性地发送中间计费请 求消息， 其中包括所述用户的上网总时长以及总流量信息； 所述认证服务器还用于向所述业务控制点发送鉴权请求消息， 要求检 查用户的帐户余额， 以及， 向所述认证控制点回复中间计费回应消息； 所述业务控制点还用于更新所述帐户余额后向所述认证服务器回复 带有检查结果的鉴权请求回应消息。 所述认证控制点还用于向所述认证服务器发送停止计费请求消息， 其 中包含了所述用户上网的总时长和总流量信息； 所述认证服务器还用于向所述认证控制点回复停止计费回应消息， 以 及， 向所述业务控制点发送鉴权清求消息； 所述业务控制点还用于更新所述帐户余额后向所述认证服务器回复 鉴权清求回应消息。 其中， 所述认证控制点与所述认证服务器之间以远程授权拨入用户服 务协议进行通信。 所述认证服务器和所述业务控制点之间以扩展的短消息点对点协议 进行通信。 本发明还提供了一种无线局域网预付费计费方法， 包含以下步骤：
A 当开始计费时， 认证服务器根据来自认证控制点的计费信息， 要求 业务控制点检查用户的帐户余额， 所述业务控制点向所述认证服务器回复 检查结果；
B在用户计费过程中， 所述认证服务器根据来自所述认证控制点的计 费信息， 周期性地要求所述业务控制点检查所述用户的帐户余额， 所述业 务控制点响应并更新所述帐户余额后向所述认证服务器回复检查结果；
C 当计费结束时， 所述认证服务器根据来自所述认证控制点的计费信 息， 通知所述业务控制点所述用户计费结束， 所述业务控制点更新所述帐 户余额。 其中， 当系统初始化时， 包含以下步骤： 所述业务控制点请求所述认证服务器与其建立短消息点对点连接； 所述认证服务器响应并建立起短消息点对点连接。 • 此外， 在拆除网络时， 包含以下步骤： 所述认证服务器向所述业务控制点请求解除连接； 所述业务控制点响应并回复所述认证服务器。 在所述步骤 A之前, 还包含以下步骤: 所述用户通过认证接入所述无线局域网。 所述步骤 A还进一步包含以下子步驟：
A1 认证控制点向所述认证服务器发送开始计费请求消息， 其中包含 所述用户的计费信息；
A2 所述认证服务器向所述业务控制点发送鉴权请求消息， 要求检查 用户的帐户余额；
A3 所述业务控制点向所述认证服务器回复带有检查结果的婆权请求 回应消息；
A4 所述认证服务器向所述认证控制点回复开始计费回应消息。 所述步骤 B还进一步包含以下子步驟：
B1 认证控制点向所述认证服务器周期性地发送中间计费请求消息， 其中包括所述用户的上网总时长以及总流量信息； B2 所述认证服务器向所述业务控制点发送鉴权请求消息， 要求检查 用户的帐户余额；
B 3 所述业务控制点更新所述帐户余额后向所述认证服务器回复带有 检查结果的鉴权请求回应消息；
B4 所述认证服务器向所述认证控制点回复中间计费回应消息。 所述步骤 C还进一步包含以下步驟：
C1 所述认证控制点向所述认证服务器发送停止计费请求消息， 其中 包含了所述用户上网的总时长和总流量信息；
C2 所述认证服务器向所述认证控制点回复停止计费回应消息；
C 3 所述认证服务器向所述业务控制点发送鉴权请求消息； C4 所述业务控制点更新所述帐户余额后向所述认证服务器回复鉴权 请求回应消息。 通过比较可以发现， 本发明的技术方案与现有技术的区别在于， 通过 认证服务器将认证控制点所发送的计费消息中的计费信息传递给业务控 制点， 业务控制点根据用户的帐户余额和事先制定的策略来进行预扣费或 者拒绝用户使用 WLAN业务， 并将该结果通过认证服务器返回给认证控制 点。
这种技术方案上的区别， 带来了较为明显的有益效果， 即方便地实现 了对 WLAN预付费用户的计费， 从而为 WLAN用户和运营商在现有计费方式 之外提供了一种新的计费方式， 满足了欲使用预付费方式接入 WLAN的传 统移动网络用户的需求。
附图说明 图 1是才艮据本发明的一个实施例的 WLAN预付费计费系统的结构图； 图 2是才艮据本发明的一个实施例的 WLAN预付费计费方法的流程图。 具体实施方式 为使本发明的目的、 技术方案和优点更加清楚， 下面将结合附图对本 发明作进一步地详细描述。 如图 1所示， WLAN预付费计费系统由认证控制点 10、 认证服务器 20 和业务控制点 30构成。 其中认证服务器 20分别与认证控制点 10和业务 控制点 30相连， 接口之间采用标准协议通信， 认证服务器 20负责协议的 转换。 认证控制点 10用于控制预付费用户接入 WLAN网络、向认证服务器 20 发送开始和停止计费请求消息以及接收来自认证服务器 20的响应消息。 在本实施例中， 人证控制点 10 可以是接入控制点 （Access Point , 筒称 "AP" )或者是接入控制设备（Access Control ler , 简称 "AC" )。 需要说 明的是， 在本实施例中， 认证控制点 10和认证服务器 20之间采用远程授 权拨入用户月 务（Remote Access Dai l-In User Service, 简称 "Radius" ) 协议进行通讯。 认证服务器 20用于对用户认证、 授权和计费。 目前常用的认证方式 包括用户身份鉴别模件（Subscriber Ident if icat ion Module,简称" SIM" ) 认证和一次性密码（One Time Password, 简称 "OTP" )认证： SIM认证方 式是指用户将包含用户身份信息的 SIM卡放入网卡的 SIM卡插槽中或 SIM 读卡器中， 登陆时不用输入用户名和密码， 而是通过 SIM卡中的有关信息 进行认证， 费用计入该 SIM卡帐户中； OPT认证在登录过程中加入不确定 因素， 在每次登录前用户通过某种手段得到一个一次性的临时密码， 此后 该密码仅在用户这次上网过程中才有效， 从而提高登录过程安全性。 目前 常用的计费方式包括后付费方式和预付费方式： 后付费方式用户每次使用 完服务后， 系统在数据库中增添一条使用记录， 一段时期后再进行结算； 预付费方式用户在每次使用业务前， 系统都将先对其权限和余额进行查 询， 符合条件的用户才有资格继续使用服务， 并且在用户使用业务过程中 实时地更新用户数据和权限。 本发明的主要使用对象就是预付费用户。 业务控制点 30用于存储用户的预付费信息供认证服务器 20查询。在 本实施例中， 认证服务器 20和业务控制点 30之间釆用 SMPP+协议通信。 这里 SMPP是短消息点对点协议（ Short Mes sage Peer to Peer ,简称" SMPP" ) 的意思， SMPP+协议是对 SMPP协议的一个扩展， 原先都是用于短消息业务 的。 本发明中， 首次把 SMPP+协议应用到 WLAN的实时计费中。 由于认证服务器 20和业务控制点 30之间有了直接的消息通信机制， 从而使得对接入 WLAN的传统移动网络预付费用户进行实时计费成为可能。 下面参照图 1所示的 WLAN预付费计费系统， 进一步描述其工作过程： 首先业务控制点 30和认证服务器 20之间通过绑定消息进行绑定， 接 着当预付费用户欲使用 WLAN业务时， 认证服务器 20将接收到的发自认证 控制点 10的开始计费消息转换为鉴权请求消息发送给业务控制点 30, 业 务控制点 30根据用户帐户余额和预先制定的策略决定向预付费用户提供 业务并开始计费或者拒绝向其提供业务。 如果鉴权成功， 在预付费用户使 用业务过程中， 认证控制点 10将定期向认证服务器 20发送中间计费请求 消息， 认证服务器 20将其转换为鉴权请求消息发送给业务控制点 30从而 实现实时计费。 然后， 当某个时刻预付费用户下线， 则认证控制点 10 向 认证服务器 20发送结束计费请求消息， 认证服务器 20将其转换为鉴权请 求消息发送给业务控制点 30从而停止计费。 最后， 根据需要可以通过解 除绑定消息解除认证服务器 20和业务控制点 30之间的绑定关系。 以上说明了 WLAN预付费计费系统的实现方式， 下面说明 WLAN预付费 计费方法的具体流程。 如图 2所示， 在步骤 101 , 业务控制点 30向认证服务器 20发送绑定 接收请求消息， 请求与其建立短消息点对点 （Short Mes sage Peer To Peer , 简称 "SMPP" )连接。 接着进入步驟 102，认证服务器 20收到上述请求消息后， 向业务控制 点 30发送绑定接收回应消息，这表示其已经接收了业务控制点 30的请求， 由此两者应用层之间建立起了 SMPP的连接。 为了保证信息的可靠传送， 根据现有网络环境，传送层可以采用传送控制协议（Transmi ss ion Control Protocol , 简称 "TCP" )进行连接。 需要说明的是， 步骤 101和步骤 102 仅在系统初始化的时候进行一次， 每一个预付费用户的计费应该是从步骤 103开始的。 接着进入步骤 103， 预付费用户 40通过 SIM认证或者 OTP认证接入 WLAN网络之后， 开始使用 WLAN业务。 接着进入步驟 104 ,认证控制点 10通过开始计费请求消息通知认证服 务器 20开始进行计费， 该消息含有相关的计费信息， 例如用户帐号、 时 间信息等。 接着进入步骤 105， 认证服务器 20向业务控制点 30发送鉴权请求消 息要求检查用户的帐户余额。 发送该消息的目的在于确定预付费用户 40 是否有权继续使用 WLAN业务以防其透支， 给运营商带来损失。 接着进入步骤 106， 业务控制点 30向认证服务器 20发送鉴权请求回 应消息。 在回送该消息之前， 业务控制点 30先到数据库中查询预付费用 户 40 的余额。 按照余额的多寡有不同的处理方法： 例如如果余额充足， 则按照事先配置好的策略进行预扣费（具体的策略可以按照实际的情况进 行配置， 其中的一种策略是： 每收到一次鉴权请求消息， 就预扣一定数目 的金额， 同时表示允许用户可以继续使用 WLAN 网络一定的时间； 举例来 说， 如果 SCP收到了一条来自认证服务器 20的鉴权请求消息， 则从预付 费用户 40的帐号中扣 5角钱，表示业务控制点 30允许用户继续使用 WLAN 网络 5分钟； 当然， 也可以按照用户使用的流量来进行扣费）， 同时给认 证服务器 20发送鉴权请求回应消息， 通知认证服务器 20可以允许用户继 续使用 WLAN网络； 如果余额不足， 则拒绝用户继续使用 WLAN网络。 接着进入步驟 107 , 认证服务器 20向认证控制点 10发送开始计费回 应消息， 表示已开始计费， 用户可以正常使用 WLAN业务。 接着进入步驟 108 , 认证控制点 10定时向认证服务器 20发送中间计 费请求消息， 该消息包括当前用户上网总时长以及用户总流量信息。 发送 该消息的目的在于及时地传送计费信息更新用户帐户余额， 从而实时地对 预付费用户 40权限进行管理。 该消息发送的时间间隔可以预先按照不同 的精确性要求由管理员进行配置。 接着进入步驟 109,认证服务器 20将中间计费请求消息转换为鉴权请 求消息并发送给业务控制点 30。其中涉及的转换策略可以根据具体的情况 来进行配置。 下面描述一种可行的策略： 认证服务器 20在收到本次中间计费请求消息后， 就会启动对用户的 下个周期的预扣费流程： 如果按照时间来扣费， 则预扣费的周期为认证控 制点 10上报中间计费请求消息的间隔， 认证服务器 20将该间隔按照配置 的固定时长进行分割， 每一个固定的时长代表一条鉴权请求消息； 也可以 按照流量进行分割， 得到了鉴权消息的个数之后， 通过向业务控制点 30 发送鉴权请求消息， 发起鉴权流程， 进行实时预扣费； 例如， 认证服务器 20收到了发自认证控制点 10的中间计费请求消息， 经过处理后开始启动 下个周期的预扣费流程， 如果认证控制点 10发送中间计费请求消息的间 隔为 5分钟， 而配置的固定时长也为 5分钟， 则认证服务器 20向业务控 制点 30发起一次鉴权请求消息进行预扣费。 接着进入步骤 110, 业务控制点 30向认证服务器 20发送鉴权请求回 应消息。 其处理策略同步骤 106。 接着进入步骤 111 , 认证服务器 20向认证控制点 10发送中间计费回 应消息， 通知认证控制点 10中间计费成功。 当用户下线时， 进入步骤 112 , 认证控制点 10向认证服务器 20发送 停止计费请求消息，告之用户已经下线，该消息包含了用户上网的总时长、 总流量信息。 接着进入步骤 113 , 认证服务器 20向认证控制点 10发送停止计费回 应消息。 接着进入步驟 114 ,认证服务器 20将停止计费请求消息转换为鉴权请 求消息并发送给业务控制点 30， 该过程中认证服务器 20的处理流程同步 骤 109。 接着进入步驟 115 , 业务控制点 30向认证服务器 20发送鉴权请求回 应消息， 该过程中的处理策略同步驟 106。 当需要解除业务控制点 30和认证服务器 20之间的连接时， 进入步驟 116 , 业务控制点 30向认证服务器 20发送解除绑定消息， 请求解除和认 证服务器 20之间的连接。 最后进入步骤 117 , 认证服务器 20向业务控制点 30发送解除绑定回 应消息， 解除和业务控制点 30之间的连接。 需要说明的是， 步骤 116和 步驟 117通常是在拆除网络时由管理员控制执行， 而并非针对某个特定用 户执行的。
虽然通过参照本发明的某些优选实施例， 已经对本发明进行了图示和 描述， 但本领域的普通技术人员应该明白， 可以在形式上和细节上对其作 各种各样的改变， 而不偏离所附权利要求书所限定的本发明的精神和范 围。

Claims

权 利 要 求
1. 一种无线局域网预付费计费系统， 其特征在于， 包含认证控制点、 认证服务器和业务控制点， 其中，
所述认证控制点用于控制用户接入无线局域网网络， 向所述认证服务 器发送带有计费信息的计费请求消息， 并根据所述认证服务器的回复继续 或结束所述用户的接入；
所述认证服务器用于所述用户进行认证、 授权和计费， 向所述业务控 制点发送要求更新并检查所述用户的帐户余额的鉴权请求消息， 并根据所 述业务控制点的回复通知所述认证控制点是否允许所述用户继续接入； 所述业务控制点用于存储所述用户的信息， 根据所述鉴权请求消息更 新并向所述认证服务器回复所述用户的帐户余额。
2. 根据权利要求 1 所述的无线局域网预付费计费系统， 其特征在于， 所 述认证控制点还用于向所述认证服务器发送开始计费请求消息， 其中包含 所述用户的计费信息， 以及， 向所述业务控制点发送鉴权请求消息， 要求 检查用户的帐户余额， 并在收到回应消息后向所述认证控制点回复开始计 费回应消息。
所述业务控制点还用于向所述认证服务器回复带有检查结果的鉴权 请求回应消息。
3. 根据权利要求 1所述的无线局域网预付费计费系统， 其特征在于， 所述认证控制点还用于向所述认证服务器周期性地发送中间计费请求消 息， 其中包括所述用户的上网总时长以及总流量信息；
所述认证服务器还用于向所述业务控制点发送鉴权请求消息， 要求检 查用户的帐户余额， 以及， 向所述认证控制点回复中间计费回应消息； 所述业务控制点还用于更新所述帐户余额后向所述认证服务器回复 带有检查结果的鉴权请求回应消息。
4. 才艮据权利要求 1所述的无线局域网预付费计费系统， 其特征在于， 所述认证控制点还用于向所述认证服务器发送停止计费请求消息， 其中包 含了所述用户上网的总时长和总流量信息；
所述认证服务器还用于向所述认证控制点回复停止计费回应消息， 以 及， 向所述业务控制点发送鉴权请求消息；
所述业务控制点还用于更新所述帐户†额后向所述认证服务器回复 鉴权请求回应消息。
5. 一种无线局域网预付费计费方法， 其特征在于， 包含以下步驟： A 当开始计费时， 认证服务器根据来自认证控制点的计费信息， 要求 业务控制点检查用户的帐户余额， 所述业务控制点向所述认证服务器回复 检查结果；
B在用户计费过程中， 所述认证服务器根据来自所述认证控制点的计 費信息， 周期性地要求所述业务控制点检查所述用户的帐户余额， 所述业 务控制点响应并更新所述帐户余额后向所述认证服务器回复检查结果； c 当计费结束时， 所述认证服务器根据来自所述认证控制点的计费信 息， 通知所述业务控制点所述用户计费结束， 所述业务控制点更新所述帐 户余额。
6. 根据权利要求 5所述的无线局域网预付费计费方法， 其特征在于， 所述步骤 A还进一步包含以下子步骤：
A1 认证控制点向所述认证服务器发送开始计费请求消息， 其中包含 所述用户的计费信息；
A2 所述认证服务器向所述业务控制点发送鉴权请求消息， 要求检查 用户的帐户余额；
A3 所述业务控制点向所述认证服务器回复带有检查结果的鉴权请求 回应消息；
A4 所述认证服务器向所述认证控制点回复开始计费回应消息。
7. 根据权利要求 5所述的无线局域网预付费计费方法， 其特征在于， 所述步骤 B还进一步包含以下子步骤：
B1 认证控制点向所述认证服务器周期性地发送中间计费请求消息， 其中包括所述用户的上网总时长以及总流量信息；
B2 所述认证服务器向所述业务控制点发送鉴权请求消息， 要求检查 用户的帐户余额；
B3 所述业务控制点更新所述帐户余额后向所述认证服务器回复带有 检查结果的鉴权请求回应消息；
B4 所述认证服务器向所述认证控制点回复中间计费回应消息。
8. 根据权利要求 5所述的无线局域网预付费计费方法， 其特征在于， 所述步骤 C还进一步包含以下步骤：
C1 所述认证控制点向所述认证服务器发送停止计费请求消息， 其中 包含了所述用户上网的总时长和总流量信息；
C2 所述认证服务器向所述认证控制点回复停止计费回应消息； C3 所述认证服务器向所述业务控制点发送鉴权请求消息；
C4 所述业务控制点更新所述帐户余额后向所述认证服务器回复鉴权 请求回应消息。
9. 根据权利要求 5、 6、 7或 8所述的无线局域网预付费计费方法， 其特征在于， 当系统初始化时， 包含以下步骤：
所述业务控制点请求所述认证服务器与其建立短消息点对点连接； 所述认证服务器响应并建立起短消息点对点连接。
10. 根据权利要求 5、 6、 7或 8所述的无线局域网预付费计费方法， 其特征在于， 在拆除网络时， 包含以下步骤：
所述认证服务器向所述业务控制点请求解除连接；
所述业务控制点响应并回复所述认证服务器。
11. 根据权利要求 5、 6、 7或 8所述的无线局域网预付费计费方法， 其特征在于， 在所述步驟 A之前， 还包含以下步骤：
所述用户通过认证接入所述无线局域网。
PCT/CN2004/001189 2003-10-24 2004-10-20 Systeme et procede de facturation avec prepaiement dans un reseau local sans fil WO2005041477A1 (fr)

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