Interface between iptv set-top box and IPTV platform

The interface between the set-top box and the IPTV platform involves a lot of content, among which the user's business process can be divided into three categories: authentication interface, payment interface and service use interface.

The authentication interface includes network layer authentication and application layer authentication, which is the process of realizing the early Internet of the set-top box, that is, the process of Internet users accessing the Internet. According to the communication method between the user and the network device, the network layer access authentication methods that are currently used more are divided into two types: PPPoE and DHCP+WeB.

At present, PPPoE authentication technology is the most widely used in Ethernet access and ADSL access methods. Its networking principles are basically the same. They use switches or DSLAMs to connect users to the network, and set BRAS equipment behind the switches and DSLAM to terminate PPP. The broadband access server that terminates the PPP connection can manage the PPP connection separately, and can separately perform statistics on the user's online service time and traffic information, and various billing methods can provide the necessary user's online information.

The essence of PPPoE is to run the PPP protocol on the Ethernet, and establish a PPP point-to-point channel between the user end and the broadband access server. In other words, if the multicast service is enabled between the user host and the BRAS, the multicast data must use the BRAS as the receiving end replication point, which will cause a large amount of multicast data to traverse the network and DSLAM equipment, contrary to the original intention of multicast. Therefore, the PPPoE access mode restricts the existence of multicast protocols and affects the development of video services.

DHCP+Web authentication needs to be used in conjunction with the DHCP server and the Web authentication server. The Host first obtains an IP address through DHCP and communicates with the Web authentication server. It can also enable the user to access only some internal servers. Then, the access server forces the user to connect to Web authentication server, and pop up the authentication page in the browser. Enter the bribe and password on this page, and the Web Server, as the Client of Radius, transmits the authentication information to the Radius Server to authenticate the user. After the authentication is passed, the user obtains a new legal IP address and can access the Internet or a specific network.

In the DHCP+Web authentication method, there is no PPP-like layer 3 channel between the user host and the access server, and there is no restriction on the multicast protocol. If the user mainly accesses the switch between the access servers or the DSLAM can support IGMP Snooping, the multicast service is easy to develop. However, DHCP itself has many shortcomings, especially security issues. How to ensure the legitimacy and authenticity of user information is a key issue that DHCP needs to solve.

It can be seen that the network layer authentication can adopt PPPoE authentication or DHCP mode according to the degree of STB terminal support. However, neither of these two authentication methods can meet the needs of IPTV service development. Therefore, we need to provide corresponding solutions for the current authentication methods, and under the premise of ensuring the development of IPTV services, reduce the major specification changes to the existing network as much as possible to ensure the support of the original services.

For the STB terminal adopting PPPoE for authentication, the main problem to be solved is the distribution of data. Therefore, different service distribution channels can be adopted for different services of users. In other words, on the one hand, the BRAS device is required to support PPPoE authentication for IPTV services, and its related unicast data is delivered through the PPPoE channel; this requires the BRAS to distinguish the types of user services through the authentication information, and the DLSAM device needs to support multicast The control of distribution and multicast groups also requires STB equipment to support dual protocol stacks. This not only guarantees the functions of the original authentication system, but also ensures the smooth development of multicast services.

For the DHCP authentication method, the main problem is to ensure the security and authenticity of DHCP access, which requires the introduction of the OPTION82 option in the DHCP packet; for situations where multiple terminals use DHCP at the same time, in order to distinguish these terminals, it is also necessary Introduce the OPTION60 option. The DHCP OOPTION82 option is usually used by the DSLAM device to send the user's product information and device information to the user's DHCP message, and the DHCP server executes the IP address allocation strategy or other strategies by identifying the OPTION82. The OPTION60 option is usually provided by the terminal, and different types of terminals can be identified by setting different OPTION60. Through the OPTION60 option, different terminals can be allocated different address spaces. However, the introduction of OPTION82 requires the support of DSLAM, and the current operating equipment does not have this function, so network equipment needs to be modified.

The current solutions tend to adopt DHCP and adopt the independent IPPOOL approach. This solution can realize the isolation between IPTV services and traditional Internet services through IP-specific policy configuration. When the number of IP-TV users is not high, a smaller set-up can meet business requirements.

Application layer authentication implements the identity authentication process of set-top box users in the IPTV system. Only users who have passed application layer authentication can consume and use various types of services provided by IPTV stations. Only a secure application layer recognition technology can ensure that content providers can safely use wonderful content on the IPTV system.

The user consumption interface needs to implement a complex consumption process of system price prompts, user confirmation purchases, and system deductions. According to different billing methods and payment methods, the flow of the interface is also different.

The content use interface realizes the process that users obtain different application services from content operations. The applications provided by the IPTV system have become more abundant, such as live video, video on demand, games, karaoke, information retrieval, etc. As the function of the set-top box becomes more powerful, network transmission With the continuous increase of bandwidth, we have reason to believe that all kinds of Internet applications on the PC will be presented on the user's TV through the set-top box.

From digital TV set-top boxes (DVB-C), satellite set-top boxes (DVB-S), network TV set-top boxes, set-top boxes to the most popular IP set-top boxes, the team of set-top boxes continues to grow and develop. For the large-scale development of set-top boxes and the large-scale development of machine-card separated set-tops, set-top boxes with separated machine-cards have gradually become a trend. In addition, dual-mode set-top boxes and software set-top boxes are also maturing. With the development and promotion of the concept of digital home, the future set-top box may evolve into the core control unit of the living room technology in the family, which is called "Home Gateway" or "Residential Gateway" in the industry. In addition to the existing video transmission function, it is more to provide an integrated, comprehensive transportation for all the smart devices in the family. This century, realize the interconnection and intercommunication between the devices, and can provide different terminals for different terminals. Personalized business, to achieve "Multi-Play".

How far(long) the transmitter cover?

The transmission range depends on many factors. The true distance is based on the antenna installing height , antenna gain, using environment like building and other obstructions , sensitivity of the receiver, antenna of the receiver . Installing antenna more high and using in the countryside , the distance will much more far.

EXAMPLE 5W FM Transmitter use in the city and hometown:

I have a USA customer use 5W fm transmitter with GP antenna in his hometown ,and he test it with a car, it cover 10km(6.21mile).

I test the 5W fm transmitter with GP antenna in my hometown ,it cover about 2km(1.24mile).

I test the 5W fm transmitter with GP antenna in Guangzhou city ,it cover about only 300meter(984ft).

Below are the approximate range of different power FM Transmitters. ( The range is diameter )

0.1W ~ 5W FM Transmitter ：100M ~1KM

5W ~15W FM Ttransmitter : 1KM ~ 3KM

15W ~ 80W FM Transmitter : 3KM ~10KM

80W ~500W FM Transmitter : 10KM ~30KM

500W ~1000W FM Transmitter : 30KM ~ 50KM

1KW ~ 2KW FM Transmitter : 50KM ~100KM

2KW ~5KW FM Transmitter : 100KM ~150KM

5KW ~10KW FM Transmitter : 150KM ~200KM

How to contact us for the transmitter?

Call me +8618078869184 OR
Email me [email protected]
1.How far you want to cover in diameter ?
2.How tall of you tower ?
3.Where are you from ?
And we will give you more professional advice.

About Us

FMUSER.ORG is a system integration company focusing on RF wireless transmission / studio video audio equipment / streaming and data processing .We are providing everything from advice and consultancy through rack integration to installation, commissioning and training.

We offer FM Transmitter, Analog TV Transmitter, Digital TV transmitter, VHF UHF Transmitter, Antennas, Coaxial Cable Connectors, STL, On Air Processing, Broadcast Products for the Studio, RF Signal Monitoring, RDS Encoders, Audio Processors and Remote Site Control Units, IPTV Products, Video / Audio Encoder / Decoder, designed to meet the needs of both large international broadcast networks and small private stations alike.

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