WO2011143860A1

WO2011143860A1 - Method and system for handset television (tv) accounting

Info

Publication number: WO2011143860A1
Application number: PCT/CN2010/076352
Authority: WO
Inventors: 迟欣; 尚浩强; 刘小锐; 邓兰兰; 周洋
Original assignee: 中兴通讯股份有限公司
Priority date: 2010-05-19
Filing date: 2010-08-25
Publication date: 2011-11-24
Also published as: CN101827247B; CN101827247A

Abstract

A method for handset TV accounting is disclosed in this invention, which includes: a handset TV terminal sends an order request to an Authentication, Authorization, Accounting (AAA) server; the AAA server performs authorization and accounting for the handset TV terminal, and if the authorization and accounting fail, returns error information, otherwise stores the order information into a key management system synchronously; the handset TV terminal initiates a service key request to the key management system; the key management system performs authorization, and if the authorization fails, returns error information, otherwise, returns a service key; after obtaining the service key, the handset TV terminal decrypts a program flow and plays it back, and at the same time, requests termly to update the service key, or requests termly to order and update the service key until the end. This invention also discloses a system for handset TV accounting. Through the method and system above, the service order is implemented using mobile communication network, the flexibility of accounting is improved and the pressure of wireless network is reduced.

Description

Method and system for mobile phone television billing

The present invention relates to the field of mobile TVs that integrate data broadcasting networks and mobile communication networks, and more particularly to a method and system for charging mobile phones. Background technique

With the rapid development of mobile information technology, the opening of the broadcasting and mobile communication market, and the increasing demand for various services in the current market, the relatively independent data broadcasting network and the mobile communication network penetrate each other, and mobile TV It is in this context that the business has developed rapidly.

The China Mobile Multimedia Broadcasting (CMMB) service launched by the State Administration of Radio, Film and Television of China, also known as the mobile TV service, uses digital data broadcasting to transmit digital TV data, supported by multi-level key encryption methods. The user subscribes to the business monthly, and performs billing and settlement, but the packages and business types that can be supported are relatively simple. Since CMMB uses a one-way communication network, services such as changes to packages can only be handled through the business hall, which brings great inconvenience to users.

The mobile TV service based on broadcast and mobile communication provides downlink transmission of multimedia content by using a one-way broadcast network, and authenticates, authorizes and manages users by using the authentication management system of the mobile communication network and the two-way network transmission capability. In addition to providing video and audio, it also provides interactive information, allowing users to use the interactive functions of the mobile network and the terminal to achieve interactive operations by clicking on the connection and sending text messages.

After the combination of the broadcast network and the mobile communication network, a variety of different charges are incurred, namely, the cost of watching the channel, the wireless data traffic fee, the information fee, and the related expenses incurred by the interaction. For the cost of watching the channel, the monthly subscription method is generally adopted, and the operator settles according to the proportion of the division. Wireless data traffic charges are generally included in mobile TV service packages or interactions and are not billed separately. The information fee refers to the fee generated by the user using some resources on the network through the mobile TV, such as setting the color ring tone, on-demand video, etc., and the fee is still collected by the mobile communication party, and the content provider divides. The charging for interaction is mainly carried out on the mobile communication network, and can support monthly service and pay-per-view. In the mobile TV system, the viewing and interaction of mobile TV is the main source of revenue for mobile TV. The existing charging methods have the disadvantage of low flexibility.

At present, in the mobile TV system under the converged network, the commonly used encryption method is to use the three-layer key system to achieve business security effects, including: The first layer: the initial key, can be preset or after each boot The method obtained from the server is generated; the second layer: the service key, the service key information encrypted by the initial key after the user needs the authentication and authentication; the third layer: the program stream key, the system side uses the broadcast mode The updated program stream key is sent periodically, and the program stream key is encrypted by the service key to ensure the security of the multimedia broadcast service. In the encryption system, in order to ensure the information security of the program stream, the program stream key is frequently updated, and the update period is generally in units of seconds or minutes. After each update, the mobile TV client can decrypt the new one with the service key. The program stream key is used, and the service key also has a certain update period. Generally, when the service key is updated, the service key update process of a large number of users is triggered at the same time, which causes a sudden increase of network data traffic, resulting in a sudden increase in network data traffic. Network congestion, wireless network pressure caused by centralized service key update is also a problem that needs to be solved in mobile TV systems. Summary of the invention

In view of this, the main object of the present invention is to provide a method and system for charging mobile phone television, which can realize ordering of services by using a mobile communication network, improve billing flexibility, and reduce wireless network pressure.

In order to achieve the above object, the technical solution of the present invention is achieved as follows:

The invention provides a method for charging a mobile phone television, and the method comprises:

The mobile TV client sends a subscription request to an authentication, authentication, and accounting (AAA) server; The AAA server authenticates and charges the mobile TV client according to the subscription information in the subscription request. If the authentication and charging succeeds, the subscription information is synchronously stored in the key management system; otherwise, the error information is returned. End the process;

The mobile TV client initiates a service key request to the key management system through the mobile communication network, and the key management system performs authentication. If the authentication is successful, the service key is returned. Otherwise, the error information is returned, and the processing flow is ended;

After obtaining the service key, the mobile TV client decrypts the program stream and watches it, periodically requests to replace the service key, or periodically requests to order and replace the service key until the end.

In the viewing process, the method further includes: the AAA server, in conjunction with the interactive content generated by the interactive server and the feedback of the mobile TV client, charging for each mobile phone TV client participating in the interaction.

The mobile phone television client periodically requests to replace the service key, including: according to the monthly subscription, the mobile TV client requests a new service key before the service key expires; wherein the mobile TV client requests a new one. The time point of the service key is a time point randomly selected by the client and distributed uniformly before the expiration time point;

The periodic request for ordering and replacing the service key includes: When charging according to the duration, the mobile TV client re-initiates the subscription and service key request before the service key expires.

The authenticating and charging the mobile phone television client by the AAA server includes: determining, according to the mobile phone television client, channel or program information and charging standards, and an account balance of the mobile phone television client or Credit status is authenticated and billed.

The performing the authentication by the key management system includes: performing authentication according to the service key request and the saved subscription information. If the user has subscribed to the program or channel carried in the service key request, the authentication is passed, if not If the program or channel is ordered, the authentication will not pass.

The subscription information includes:

User information of the mobile TV client, channel or program information determined by the user, and Charging standard; the charging standard is to perform monthly billing for determining the channel or program information to be watched, or to charge according to the duration.

The invention also provides a mobile phone television charging system, the system is divided into a data broadcasting system side and a mobile communication system side, and the mobile communication system side specifically comprises: an AAA server and a call session control function (CSCF) The data broadcasting system side includes: a mobile TV control center and a key management system;

The AAA server is configured to authenticate and charge the mobile phone TV client according to the subscription information in the subscription request, and store the subscription information in a key management system;

The CSCF is used for data interaction between an AAA server, a mobile TV control center, and a mobile TV client connected through a mobile communication network, and forwards a service key request or a subscription request sent by the mobile TV client until the end;

The mobile phone television control center is configured to forward the initial key request or the service key request to the key management system, and forward the data message returned by the key management system to the CSCF;

The key management system is configured to return an initial key according to an initial key request sent by the mobile TV client, save the subscription information synchronized by the AAA server, and request a service key initiated by the mobile TV network through the mobile communication network. Perform authentication.

The mobile communication system side further includes: an interaction server, configured to perform interaction with the AAA server to complete charging;

The AAA server is further configured to perform billing for each participating mobile TV client in conjunction with the interactive content generated by the interactive server and the feedback of the mobile TV client.

The mobile phone television billing method and system provided by the present invention authenticates and bills the tariffs through the authentication, the rights, and the accounting (AAA) of the mobile communication system side. The mobile phone television terminal initiates a service subscription and a service key request to the key management system on the data broadcast network side through the mobile communication network, and uses the service key replacement cycle to charge the viewed service according to the duration, so that the charging is performed. More spiritual At the same time, it is also possible to spread the update time of the service key and reduce the pressure on the wireless network. DRAWINGS

1 is a schematic flow chart of a method for billing in a mobile phone television terminal subscription and viewing according to the present invention; FIG. 2 is a schematic flowchart of a method for implementing mobile phone television interactive charging according to the present invention;

FIG. 3 is a schematic structural diagram of a system for charging mobile phone television according to the present invention. detailed description

In order to better understand the present invention, a system for charging mobile phone television according to the present invention will be introduced. The system is divided into a data broadcasting system side and a mobile communication system side, and the data broadcasting system side is responsible for managing and transmitting data broadcast data to implement a key. Relevant services such as authentication and management, scrambling the program stream, encapsulating the interactive data, and multiplexing the data, and finally transmitting the multiplexed data to the mobile TV terminal through the data broadcast network. The mobile communication system side is responsible for realizing authentication and accounting for users, supporting initial key, request and delivery of service keys, and supporting services such as interaction. The mobile TV control center on the data broadcasting system side and the CSCF on the mobile communication system side serve as interface communication interface servers of the two systems, and are responsible for the key management system on the data broadcasting system side and the AAA server and interaction between the interactive packaging system and the mobile communication system side. Data interaction between servers. At the same time, the mobile TV terminal is connected to the CSCF through the mobile communication network via the WAP gateway on the mobile communication system side, and the CSCF can forward the information sent by the mobile TV terminal to the corresponding processing system, and can also forward the information that the mobile TV terminal needs to receive.

The technical solutions of the present invention are further elaborated below in conjunction with the accompanying drawings and specific embodiments. 1 is a schematic flowchart of a method for charging in a subscription and viewing of a mobile phone television terminal according to the present invention. As shown in FIG. 1 , the method for charging in the subscription and viewing of the mobile phone television terminal specifically includes the following steps:

Step 101: The user activates the mobile TV client, sends an initial key request to the key management system through the mobile communication network, and acquires an initial key. Here, the sending the initial key request by using the mobile communication network is specifically: sending a user key request to the key management system via the WAP gateway, the CSCF, and the mobile TV control center; if the mobile TV client has previously requested the obtained The initial key is used directly. The initial key is used to decrypt the service key.

Step 102: The mobile TV client sends a subscription request to the AAA server.

Specifically, the subscription request sent by the mobile TV client is sent to the AAA server through the WAP gateway and the CSCF. The ordering request includes: user information of the mobile phone television client, channel or program information determined to be viewed in the mobile phone television service list delivered by the system browsed by the mobile phone television client, and a desired charging standard. The charging standard is to perform monthly billing or time-based billing for channels or program information that needs to be viewed.

Step 103, the AAA server combines the subscription information in the subscription request, and authenticates and charges the mobile phone television client. If the authentication fails, the error message is returned and the process ends. Otherwise, step 104 is performed;

Specifically, the authentication and charging performed by the AAA server are specifically: combining channel or program information that the mobile TV client needs to watch, a desired charging standard, and an account balance or credit status of the mobile TV client. Perform authentication. For the stored value card user, if the charging standard is based on monthly subscription, when the account balance of the mobile TV client is insufficient to pay the monthly subscription service ordered by the user, the authentication fails, and when the payment is sufficient, the authentication is successful. If the billing standard is billed according to the duration, the duration of the order is a replacement period of the service key, that is, the minimum time unit ordered by time; if the balance of the mobile TV client is sufficient to pay for a minimum time unit The fee is valid for authentication and billing. The credit situation is an authentication for a post-paid user, wherein the credit situation includes a history of the call payment payment of the post-paid user. If the user frequently owes money and the credit situation is not good, the authentication fails, otherwise the authentication is successful. In addition, the customer who pays the credit card withholding payment can perform authentication according to the overdraft limit of the credit card. When the overdraft limit is sufficient to pay for the channel or program subscribed by the user, the authentication is successful, otherwise the authentication fails. Step 104: The AAA server synchronously stores the subscription information to the key management system, and after the key management system saves the subscription information, returns the subscription success result to the mobile TV client.

Here, the key management system saves the subscription information as: storing the channel or program information to be viewed carried in the subscription information of the mobile phone television client and the user information of the mobile TV client as a subscription relationship. After the subscription is successful, if it is the first subscription, returning the successful result of the subscription to the mobile TV client further includes: displaying the subscription result on the mobile TV service list delivered by the browsing system of the user mobile TV client, corresponding to The program or channel is shown as being ordered by monthly subscription, or ordered by time.

Step 105: The mobile TV client initiates a service key request to the key management system through the mobile communication network, and the key management system performs authentication, the authentication fails, the error information is returned, and the service key is returned;

Specifically, when the user selects the successfully ordered content to initiate viewing, the mobile TV client initiates a service key request for the current time period. The service key request is sent by the mobile phone TV client to the key management system via the WAP gateway, the CSCF, and the mobile TV control center. The mobile TV control center also records the service key request and the issued service key forwarded by the mobile TV control center in the log, so that the data broadcast service provider collects user subscription habits and hotspots, and performs a pair with the mobile communication carrier. Accounts and accounting.

The key management system performs authentication according to the service key request and the subscription relationship. If the user has subscribed to the program or channel carried in the service key request, the authentication is passed, if the program is not subscribed. Or channel, the authentication does not pass. The service key is encrypted by the initial key and returned to the mobile TV client for security.

Further, when the user views the monthly service, the service key has a certain effective time, and the key management system can set the service key replacement time to a fixed time. For example: Set to 30 minutes, or be flexible with the program. Mobile TV client is playing mobile TV During the process of checking the validity period of the service key, when the service key is about to expire, the client actively requests the key management system for the service key of the next time period. If the key management system successfully authenticates the user, the process returns. The validity period of a business key and key that is about to take effect.

The advance time of the user request key may be uniformly distributed by the mobile TV client according to a certain algorithm for a period of time, for example: generating a time period in which the update is advanced, and then selecting a key in the time period by using a random uniform distribution algorithm. Update time to prevent excessive system load caused by too many users requesting new keys at the same time. Therefore, the time point at which the mobile TV client requests a new service key is a point in time randomly selected by the client and distributed evenly before the expiration time point.

Further, when the user watches the channel or the program according to the duration, when the service key is about to expire, the mobile TV client repeats the above order and service key acquisition process, thereby continuing to view the mobile TV. This process continues until the user exits the channel. The cost of watching mobile TV is directly related to the order, which enables the billing according to the duration.

The AAA server implements authentication and charging for the user. The charged fee is the mobile TV viewing fee of a service key replacement period. If the service key is requested for less than one cycle for the first time, a certain algorithm may be used to adjust accordingly. The fee, for example, is combined with the time when the service key is generated and the time when the user stops watching, and the time when the user actually watches the mobile TV is used for charging. Further, the time of the request is initiated, and the user information of the mobile TV client and the channel or program information that the user needs to watch, so that each deduction can be flexibly charged for a specific time period, user, and program. For example: Different fees can be generated for different users, and users can be given certain discounts according to different time periods and different programs.

Step 106: After obtaining the service key, the mobile TV client extracts the encrypted program stream key in the received broadcast data, decrypts the data using the service key, and then decrypts the program stream by using the decrypted program stream key, and periodically requests Replace the service key or order and replace the service key until the end. Specifically, the program stream key in the broadcast data is added to the multimedia data by the key management system through the scrambling system on the data broadcast system side, and is sent to the mobile phone through the data broadcast network through the multiplexing system on the data broadcast system side. TV client's. For watching channels or programs according to the duration until the end, the mobile TV client no longer performs the ordering behavior, and the billing stops. Therefore, if the program or channel supports monthly subscription and time-based billing, the service key replacement period is set to be shorter than the service key replacement period of the program or channel that only provides monthly subscription to avoid over-billing. . For a program or channel that supports both monthly and long-term billing, the service key replacement period is the same.

2 is a schematic flowchart of a method for implementing mobile phone television interactive charging according to the present invention. As shown in FIG. 2, the method for implementing mobile TV interactive charging includes the following steps:

Step 201: The interaction server initiates an interaction according to the pre-configured policy, and generates and sends the interaction information to the interactive encapsulation system;

Specifically, the interaction information is sent to the interactive package system through the CSCF and the mobile TV control center; the mobile TV control center generates an interactive initiated log, including an interactively sent group, a usage mode, etc., so that the data broadcast service provider Reconciliation and accounting with mobile communication operators.

Step 202: The interactive encapsulation system encapsulates the interaction information and adds it to the broadcast data program stream through the multiplexing system.

Specifically, the multiplexing system is located on the data broadcasting system side, and is configured to add the interactive information encapsulated by the interactive package system to the broadcast data program stream, and send the data to the mobile TV client through the data broadcast network.

Step 203: The mobile TV client receives the encapsulated interactive information, parses and displays; Step 204, the user operates the mobile TV client to interact with the interactive server through the mobile communication network;

Specifically, the mobile communication network specifically includes: passing the CSCF to the interactive server. Send the user's interactive content.

Step 205: The AAA server interacts with the interaction server to complete charging.

Specifically, the AAA server performs charging for each participating mobile TV client in combination with the content of the interactive service and the feedback of the mobile TV client.

3 is a schematic structural diagram of a system for charging mobile phone television according to the present invention. As shown in FIG. 3, the mobile phone television charging system is divided into a data broadcasting system side and a mobile communication system side, and the mobile communication system side specifically includes: an AAA server. 31 and CSCF32; the data broadcasting system side includes: a mobile TV control center 33 and a key management system 34, wherein

The AAA server 31 is configured to authenticate and charge the mobile phone television client in combination with the subscription information in the subscription request, and synchronously store the subscription information to the key management system;

Specifically, the authentication and charging performed by the AAA server 31 are specifically: combining channel or program information that the mobile TV client needs to watch and a desired charging standard, and an account balance or credit of the mobile TV client. The situation is authenticated. For the stored value card user, if the charging standard is based on monthly subscription, if the account balance of the mobile TV client is insufficient to pay the monthly subscription service subscribed by the user, the authentication fails, and when the payment is sufficient, the authentication is successful and the accounting is successful. If the billing standard is billed according to the duration, the duration of the order is a replacement period of the service key, that is, the minimum time unit ordered by time; if the balance of the mobile TV client is sufficient to pay for a minimum time unit , authentication and billing are successful. The credit situation is for the authentication of the post-paid user, wherein the credit situation includes the history of the call payment payment of the post-paid user. If the user frequently owes money and the credit situation is not good, the authentication fails, otherwise the authentication is successful. In addition, the customer who pays the credit card withholding payment can perform authentication according to the overdraft limit of the credit card. When the overdraft limit is sufficient to pay for the channel or program subscribed by the user, the authentication is successful, otherwise the authentication fails.

The CSCF 32 is used for data interaction between the AAA server 31, the mobile TV control center 33, and the mobile TV client connected through the mobile communication network, and forwards the service key request or the subscription request sent by the mobile TV client until the end; Specifically, the message sent by the mobile TV client is connected to the CSCF32 via the WAP gateway through the mobile communication network.

The mobile phone television control center 33 is configured to forward an initial key request or a service key request to the key management system 34, forward the data message returned by the key management system 34 to the CSCF 32, and enable all data messages to be performed. Log record

Specifically, the mobile TV control center 33 records all data messages, so that the data broadcast service provider collects user subscription habits and hotspots, and performs reconciliation and accounting with the mobile communication carrier.

The key management system 34 is configured to return an initial key according to an initial key request sent by the mobile phone television client, save the subscription information synchronized by the AAA server 31, and initiate a service key for the mobile phone television client through the mobile communication network. Request for authentication.

Specifically, when the user selects the successfully ordered content to initiate viewing, the key management system 34 receives the mobile phone television client to initiate a service key request for the current time period; the service key request is requested by the mobile phone TV client. The terminal is sent to the key management system 34 via the WAP gateway, the CSCF 32, and the mobile TV control center 33.

The key management system 34 saves the subscription information as: storing the channel or program information to be viewed carried in the subscription information of the mobile TV client and the user information of the mobile TV client as a subscription relationship. After the subscription is successful, if it is the first subscription, returning the successful result of the subscription to the mobile TV client further includes: displaying the subscription result in the mobile TV service list delivered by the system browsed by the user's mobile TV client, The corresponding program or channel is displayed as ordered by monthly subscription or ordered by duration.

The key management system 34 performs authentication according to the service key request and the subscription relationship. If the user has subscribed to the program or channel carried in the service key request, the authentication passes, if not ordered. If the program or channel is not approved, the authentication will not pass. The service key is encrypted by the initial key and returned to the mobile TV client for security. Further, when the user views the monthly service, the service key has a certain effective time, and the key management system can set the service key replacement time to a fixed time. For example: set to

30 minutes, or flexible settings depending on the program. The mobile TV client checks the validity period of the service key during the process of playing the mobile TV. When the service key is about to expire, the client actively requests the key management system for the service key of the next time period, if the key management system If the user authentication succeeds, the validity period of the next service key and key to be valid will be returned. The advance time of the user request key may be distributed by the mobile TV client according to a certain algorithm for a period of time, for example: generating a time period in which the update is advanced, and then selecting one in the time period by using a random equal-hook distribution algorithm. Key update time to prevent excessive system load caused by too many users requesting at the same time. Therefore, the time point at which the mobile TV client requests a new service key is a time point randomly selected by the client and distributed evenly before the expiration time point.

Further, when the user watches the channel or the program according to the duration, when the service key is about to expire, the mobile TV client repeats the above order and service key acquisition process, thereby continuing to view the mobile TV. This process continues until the user exits the channel. The cost of watching mobile TV is directly related to the order, which enables the billing according to the duration. The AAA server implements authentication and charging for the user. The recorded fee is the mobile TV viewing fee of a service key replacement period. If the service key is requested for less than one cycle for the first time, a certain algorithm may be used to adjust accordingly. The fee, for example, is combined with the time when the service key is generated and the time when the user stops watching, and the time when the user actually watches the mobile TV is used for charging. Further, by ordering the time when the request is initiated and the user information of the mobile TV client carried therein and the channel or program information that the user needs to watch, each deduction can be flexibly charged for a specific time period, user, and program, for example, : Different fees can be generated for different users, and users can be given certain discounts according to different time periods and different programs.

The system described in FIG. 3 further includes: an interactive server 35 on the mobile communication system side, an interactive encapsulation system 36 on the data broadcast system side, and a multiplexing system 37, wherein The interaction server 35 is configured to initiate interaction according to the pre-configured policy, generate and send the interaction information to the interactive encapsulation system 36, and interact with the AAA server 31 to complete the charging;

Further, the AAA server 31 performs billing for each participating mobile TV client in combination with the content of the interactive service and the feedback of the mobile TV client.

An interactive packaging system 36, configured to encapsulate the interactive information and add to the broadcast data through the multiplexing system 37;

The multiplexing system 37 is configured to send the scrambled broadcast data program stream and the encapsulated interactive information to the mobile TV client through the data broadcast network.

The above description is only for the preferred embodiment of the present invention, and is not intended to limit the scope of the present invention. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included. Within the scope of protection of the present invention.

Claims

Claim

A mobile phone television charging method, the method comprising: the mobile TV client sends a subscription request to an authentication, authentication, and accounting (AAA) server;

The AAA server authenticates and charges the mobile TV client according to the subscription information in the subscription request. If the authentication and charging succeeds, the subscription information is synchronously stored in the key management system; otherwise, the error information is returned. End the process;

2. The method according to claim 1, wherein in the viewing process, the method further comprises: the AAA server combining the interactive content generated by the interactive server and the feedback of the mobile TV client, for each participating interaction The mobile TV client performs billing.

The method according to claim 1 or 2, wherein the mobile phone television client periodically requests to replace the service key comprises: when charging according to the monthly subscription, the mobile TV client requests the service key before expiration in advance a new service key; wherein, the time point of the mobile TV client requesting the new service key is a time point randomly selected by the client and distributed uniformly before the expiration time point;

The method according to claim 1 or 2, wherein the authenticating and charging the mobile phone television client by the AAA server comprises: determining channel or program information to be viewed according to the mobile phone television client Authentication and billing are performed with the billing standard and the account balance or credit status of the mobile TV client.

The method according to claim 1 or 2, wherein the authenticating the key management system comprises: authenticating according to the service key request and the saved subscription information, if the user has subscribed to the service key If the program or channel carried in the request is passed, the authentication is passed, and if the program or channel is not ordered, the authentication is not passed.

The method according to claim 1 or 2, wherein the subscription information comprises: user information of the mobile phone television client, channel or program information determined by the user, and charging standards; It is to carry out monthly billing for the channel or program information that is determined to be viewed, or to charge according to the duration.

A mobile phone television charging system, wherein the system is divided into a data broadcasting system side and a mobile communication system side, and the mobile communication system side specifically includes: an AAA server and a CSCF; and the data broadcasting system side includes: a mobile TV Control center and key management system;

The system of claim 7, wherein the mobile communication system side further comprises: an interaction server, configured to interact with the AAA server to complete charging;

The AAA server is further configured to perform charging for each participating mobile TV client in combination with the interactive content generated by the interactive server and the feedback of the mobile TV client.

The system according to claim 7 or 8, wherein the CSCF forwards the service key request sent by the mobile TV client comprises: when the monthly subscription is performed, the mobile TV client advances the service key each time Before expiration, requesting a new service key; wherein, the time point of the mobile TV client requesting the new service key is a time point randomly selected by the client and distributed uniformly before the expiration time point;

The CSCF forwards the subscription request sent by the mobile TV client, including: When charging according to the duration, the mobile TV client re-initiates the subscription and service key request each time the service key expires.

The system according to claim 7 or 8, wherein the AAA server authenticates and bills the mobile phone television client, including: determining a channel or program to be watched in conjunction with the mobile phone television client The information and billing standards, as well as the account balance of the mobile TV client, are authenticated and billed.